WO2012013890A1 - Cleaning accessory for a viewing system, and corresponding cleaning assembly - Google Patents

Cleaning accessory for a viewing system, and corresponding cleaning assembly Download PDF

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Publication number
WO2012013890A1
WO2012013890A1 PCT/FR2011/051723 FR2011051723W WO2012013890A1 WO 2012013890 A1 WO2012013890 A1 WO 2012013890A1 FR 2011051723 W FR2011051723 W FR 2011051723W WO 2012013890 A1 WO2012013890 A1 WO 2012013890A1
Authority
WO
WIPO (PCT)
Prior art keywords
accessory
flange
axis
viewing window
cleaning
Prior art date
Application number
PCT/FR2011/051723
Other languages
French (fr)
Inventor
Gérald BLOUIN
Original Assignee
Dental-Moving
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dental-Moving filed Critical Dental-Moving
Priority to EP11754892.5A priority Critical patent/EP2598017A1/en
Publication of WO2012013890A1 publication Critical patent/WO2012013890A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/12—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with cooling or rinsing arrangements
    • A61B1/121—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with cooling or rinsing arrangements provided with means for cleaning post-use
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00064—Constructional details of the endoscope body
    • A61B1/00071—Insertion part of the endoscope body
    • A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
    • A61B1/00091—Nozzles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00064—Constructional details of the endoscope body
    • A61B1/00071—Insertion part of the endoscope body
    • A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
    • A61B1/00094—Suction openings
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00131—Accessories for endoscopes
    • A61B1/0014—Fastening element for attaching accessories to the outside of an endoscope, e.g. clips, clamps or bands
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/12—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with cooling or rinsing arrangements
    • A61B1/121—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with cooling or rinsing arrangements provided with means for cleaning post-use
    • A61B1/122—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with cooling or rinsing arrangements provided with means for cleaning post-use using cleaning tools, e.g. brushes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/12—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with cooling or rinsing arrangements
    • A61B1/121—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with cooling or rinsing arrangements provided with means for cleaning post-use
    • A61B1/125—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with cooling or rinsing arrangements provided with means for cleaning post-use using fluid circuits
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/08—Machine parts specially adapted for dentistry
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C19/00—Dental auxiliary appliances
    • A61C19/002—Cleaning devices specially adapted for dental instruments

Definitions

  • the present invention relates generally to the cleaning of vision systems, such as endoscopes.
  • the invention more particularly relates to a cleaning accessory for a vision system, such as an endoscope, said vision system being of the type formed of an elongated body equipped at one end with a viewing window.
  • Said accessory comprises a tubular casing inside which is intended to be introduced at least the end portion of the elongate body of the vision system provided with said viewing window, said accessory having a location for receiving said viewing window of the vision system.
  • the accessory also includes a fluid passage, such as air.
  • the invention also relates to a cleaning assembly comprising such an accessory.
  • the fluid is a gas that is ejected from the accessory in the vicinity of the viewing window of the endoscope so as to generate an annular gas envelope around said window of vision.
  • This annular envelope of gas evacuated around the viewing window does not provide a satisfactory cleaning of this window of vision.
  • such a flow of gas ejected at the outlet of the accessory around the viewing window generates in front of the viewing window a turbulent flow that may bring back any dirt against the viewing window.
  • WO 2009/143201 also describes an endoscope accessory which comprises a plurality of fluid ejection orifices fed with by a common entrance.
  • This accessory ejects fluid to clean the body cavity where it is introduced into the endoscope.
  • the fluid ejection ports that are formed in this accessory do not clean the viewing window of the endoscope.
  • the axis of each of these fluid ejection orifices is substantially parallel to the axis of the endoscope so that the fluid ejected by these orifices is directed to the cavity to be cleaned and not to the window of vision.
  • the arrangement of these fluid ejection ports may generate a turbulent flow that can bring dirt on the viewing window, without the accessory is provided with a cleaning system of said viewing window.
  • the object of the present invention is to propose a cleaning accessory for a vision system, such as an endoscope, enabling efficient cleaning of the viewing window.
  • Another object of the invention is to provide a cleaning accessory for a vision system, such as endoscope, to prevent the deposition of dirt on the viewing window.
  • a vision system such as endoscope
  • the subject of the invention is a cleaning accessory for a vision system, such as an endoscope, said vision system being of the type formed of an elongated body equipped at one end with a viewing window,
  • said accessory comprising a tubular casing inside which is intended to be introduced at least the end portion of the elongated body of the vision system mu n ie of the ite vision window, said accessory also comprising a location for receiving the vision window of the vision system and a fluid passage, such as air,
  • said accessory also comprises at least one so-called cleaning head forming, alone or in cooperation with the casing, at least one so-called acceleration / depression portion comprising a nozzle neck, located in the extension of said fluid passage and opening from said head to form a fluid ejection port and a so-called vacuum duct extending transversely to the axis of the nozzle neck and opening, on the one hand, into said nozzle neck and, on the other hand, at said receiving location of the vision window of the vision system so as to create a suction zone in front of the viewing window.
  • the or each nozzle neck makes it possible to accelerate the fluid supplied by the fluid passage, in order to increase its ejection speed at the outlet of the nozzle neck so as to generate, via the vacuum duct, which opens transversely to the nozzle. inside said nozzle neck, a zone of depression at the viewing window of the vision system to take off by suction the dirt present on the viewing window.
  • the vacuum duct also forms a recirculation zone so that any dirt that manages to cross the screen formed by the flow of gas ejected from the accessory would be driven through the vacuum duct, by suction, then ejected to high speed output of the acceleration collar.
  • Such a design of the head of the accessory for endoscope which comprises a nozzle neck connected to the fluid passage and opening out of the head of the accessory, and on which is connected a vacuum duct opening at the level of the viewing window. makes it possible to use the acceleration of the fluid intended to be ejected at the outlet of the nozzle neck, to create by venturi effect a depression in said vacuum channel and thus to generate a suction phenomenon at the viewing window of the nozzle; endoscope inserted into said accessory, for cleaning said viewing window and ejecting Dirt by the outlet of the nozzle neck.
  • said air flow accelerated and ejected at the outlet of the nozzle neck makes it possible to form a fluid barrier downstream of the viewing window, which protects it from possible projections.
  • the accelerated fluid ejected at the outlet of the nozzle neck makes it possible to form a fluid barrier making it possible to protect the viewing window in a preventative manner, and the vacuum duct that opens near the viewing window makes it possible, when the window of vision vision is dirty, suck said dirt and recirculate through the nozzle neck to be ejected by the accelerated fluid flow output of said nozzle neck.
  • the or each nozzle neck portion opens axially out of the tubular casing so as to generate a high-speed air flow in front of the vision window to prevent the detritus from coming onto the window of vision.
  • the flow of gas accelerated by the neck and then expelled by the divergent nozzle at the outlet of the accessory makes it possible to form a high-speed gas flow screen around the viewing window, which protects said viewing window against the deposit possible dirt.
  • the acceleration of the flow of gas through the neck and its ejection downstream of the viewing window makes it possible to limit the risk of dirt coming from outside to cross the barrier formed by said gas flow expelled at high speed. .
  • said fluid passage has a spiral shape of axis coincident with the axis of the envelope.
  • a helical air circulation channel is thus obtained which makes it possible to generate a vortex at the output of the accessory, which forms a swirling fl uid screen of axis substantially parallel to the axis of the viewing window.
  • Such a vortex fluid screen effectively protects the viewing window against dirt that would be projected towards the viewing window.
  • said cleaning head is located at or near the end of the tubular envelope at which is intended to be positioned the viewing window of the vision system.
  • said cleaning head is formed by a separate part of the envelope.
  • said cleaning head is then shaped to define in cooperation with the envelope said nozzle neck of said or each acceleration / depression portion.
  • said cleaning head is formed in one piece with the envelope.
  • said cleaning head comprises an abutment portion of insertion imitation in the said envelope of the end of the elongate body of the vision system provided with said viewing window.
  • the insertion limit stop portion provides for reliable, easy, fast and accurate positioning of the vision system in the tubular casing.
  • the fact of providing that the ite cleaning head includes such a stop allows to precisely position the viewing window of the vision system at the outlet of the vacuum duct opposite the end of said duct which opens into the neck of nozzle, which ensures a reliable and effective suction of dirt possibly present on the viewing window.
  • said cleaning head is an annular element coaxial with the axis of the envelope.
  • Said cleaning head comprises several acceleration / depression portions each formed of a nozzle neck and a depression duct opening, a on the inside of the annular cleaning head, said acceleration / vacuum portions being distributed circumferentially about the axis of the cleaning head.
  • the design of the cleaning head in the form of several parts of acceleration / depression distributed circumferentially around the axis of said cleaning head makes it possible to improve the cleaning of the viewing window by ensuring dirt suction in any which area of the vision window.
  • said acceleration / depression portions are spaced angularly from each other at the same angle around the axis of the annular cleaning head. Regular spacing of the acceleration / depression portions around the axis of the annular cleaning head provides uniform suction around the viewing window.
  • the invention also relates to a cleaning assembly consisting of a cleaning accessory, a flange adapted to surround the body of a tool, such as a dental surgery tool, and coupling means of the accessory to the bridle,
  • the cleaning accessory is as described above, and in that said means for coupling the accessory to the flange comprise a pivoting mobility of the accessory relative to the flange around a orthogonal axis to the axis of the tubular casing of the accessory.
  • the coupling means of the accessory to the flange allow said accessory to pivot relative to the flange.
  • said pivotal mobility is formed by a portion of a connecting member of the accessory to the flange, pivotally mounted relative to the rest of the connecting member about an axis perpendicular to the axis of the tubular casing of the accessory.
  • the internal face of the flange is frustoconical in the closed state of the bridle.
  • said assembly comprises means for clamping the flange around the body of the tool, formed of a rod provided at one end of a first part, preferably a at least partially spherical piece, equipped with a lever, the opposite end of said rod being provided with a second piece, preferably an at least partially spherical piece, said second piece being coupled to the accessory,
  • said first piece being pivotally mounted about an axis orthogonal to the axis of the rod between a position spaced from the second piece and a position close to said second piece, in the axial direction of the rod, and the flange comprising two jaws pivotally mounted relative to one another between a closed position and an open position,
  • each jaw including a portion adapted to form an at least partial receiving housing of one of the first and second parts, said first and second parts and said housings being configured such that in the positioned state of the first and second connected parts between them by said rod, at the housing portions of the flange, said first and second parts exert, in the close position of said first and second parts, efforts on their housing in the direction of clamping the jaws of the flange one against the other.
  • said second piece is rotatably mounted relative to the accessory about an axis parallel to the axis of said rod. Said second piece, which may be considered as forming part of said means for coupling, form said pivotal mobility of the accessory relative to the flange.
  • FIG. 1 is an axial sectional view of an accessory according to the invention which equips an endoscope, according to a first embodiment of said accessory;
  • FIG. 1A is an axial and perspective sectional view of the accessory and the endoscope of FIG. 1;
  • FIG. 2 is a perspective view in axial section of an accessory according to a second embodiment of the invention, the vision system not being shown to show the helical shape of the fluid passage;
  • FIG. 2 is an uncut perspective view of the accessory of FIG. 2 in which the vision system has been introduced;
  • FIG. 3 is a perspective view of the accessory according to the invention coupled to a dentist's tool by a fixing flange provided with a clamping / loosening system on the body of the tool, said clamping system comprising a lever whose raised position allows to loosen the flange;
  • Figure 3A is a view of Figure 3 in the open position of the flange so as to release the tool and uncouple the accessory of the flange;
  • FIG. 4 is a perspective view of the flange of FIGS. 3 and 3A;
  • FIG. 5 is a perspective view of the accessory of Figures 3 and 3A equipped with a connecting member coupled to the clamping system / loosening of the flange.
  • the invention relates to a cleaning accessory for a vision system 3, such as an endoscope.
  • Said vision system is of the type formed of an elongated body 30 equipped at one end with a viewing window 31.
  • Said accessory comprises a tubular envelope 2 inside which is intended to be introduced at least the end portion of the elongate body 30 vision system 3 provided with said viewing window 31.
  • Said envelope has a location for receiving said end portion of the vision system 3 provided with said viewing window 31.
  • Said accessory also comprises a passage 23 of fluid, such as air, located between the outer peripheral face of the body of the vision system 3 and the outer peripheral face of the envelope 2.
  • Said passage 23 forms a feed path fluid for the or each fluid ejection port as detailed below.
  • the fluid circulation channel 23 is preferably delimited by said envelope 2 in cooperation with the elongate body 30 of the vision system 3.
  • the fluid passage 23 is provided between the inner face of the peripheral wall of the tubular casing 2 and the outer face of the elongate body 30 of the vision system 3.
  • the fluid passage 23 is formed in the thickness of the envelope 2 and the external face of the elongate body 30 of the vision system. defines a portion of the wall of said passage 23.
  • the casing 2 of the accessory comprises means for connection to a fluid supply line 200 (see FIG. 3) connected to fluid injection means, such as a pump coupled to a fluid reservoir. .
  • the casing has on its external face at least one, preferably two, sealing ribs which make it possible to seal in the connection zone between the casing of the accessory and the fluid supply line.
  • the fluid supply pipe opens into the fluid passage defined between the body lengthened vision system or arranged in the thickness of the envelope of the accessory.
  • said accessory is provided with a so-called cleaning head 4 forming, alone or in cooperation with the casing 2, a plurality of so-called acceleration / depression portions 400 each comprising a nozzle neck 40, located in the extension of said fluid passage 23, and a conduction of depressing 41.
  • the ductless conduction duct extends transversely to the axis of the nozzle neck 40 and opens, on the one hand, into said nozzle neck 40 and, on the other hand, inside the casing 2, near the vision window of the vision system.
  • Said nozzle neck is a fluid passage narrowing which connects, on the one hand, a convergent zone of said acceleration / depression portion 400 which forms the inlet of said neck and which communicates with said fluid passage 23, and on the other hand a zone diverging from said acceleration / depression portion 400 which forms the output of said neck.
  • This fluid ejection orifice opens out of the cleaning head 4, downstream of the receiving location of the endoscope viewing window.
  • the cleaning head 4 corresponds to an annular portion that can be formed in one piece with the casing 2 of the accessory or by a separate part of the casing 2.
  • Each nozzle neck portion 40 opens out axially out of the tubular casing 2 so as to generate a high velocity fluid flow downstream of the viewing window 31 to form a fluid barrier against detritus from coming on. the vision window 31.
  • Said fluid is preferably a gas, such as air, nitrogen.
  • the acceleration of the fluid in the nozzle neck makes it possible to create a vacuum in the corresponding vacuum duct and thus to suck the dirt present on the viewing window.
  • a nozzle neck to accelerate the fluid conveyed by the fluid passage 23 makes it possible to benefit from a high fluid ejection speed at the outlet of the or each nozzle neck, without having to increase the pressure of the fluid. supplying said fluid injected into said fluid passage 23.
  • the elongate body 30 of the vision system is centered within the casing of the accessory so that the elongate body 30 of the vision system 3 and the casing 2 of the accessory are coaxial.
  • Each nozzle neck 40 is axially substantially parallel to the axis of the casing 2.
  • the axis of the fluid ejection orifice formed by the outlet of the or each nozzle throat thus extends substantially parallel to the axis of the envelope which substantially corresponds to the axis of the receiving location of the viewing window.
  • the axis of the location of reception of the viewing window corresponds to the axis perpendicular to the mean plane of said viewing window of the endoscope in the inserted state of said viewing window in the corresponding location of the head cleaning the accessory.
  • the vision system 3 comprises image acquisition means, such as a camera and / or a lens, arranged in the body of the vision system behind the viewing window. It can be provided that said image acquisition means comprise an optical fiber.
  • the accessory according to the invention is equipped with means for holding the vision system on / off within the accessory envelope.
  • Said cleaning head 4 is situated at the end of the tubular casing 2 at which the viewing window 31 of the vision system 3 is intended to be positioned.
  • each vacuum duct 41 opens at the level of the vision window 31 of the vision system 3 in the introduced state of said vision system 3 in the envelope 2 of the accessory.
  • the axis of the vacuum duct is substantially parallel to the mean plane of the reception location of the viewing window of the endoscope so as to make it possible to generate a suction flow substantially tangential to the viewing window so as to aspirate any dirt present on said viewing window and have it re-circulate through the nozzle neck so that said dirt is expelled at the outlet of said neck which opens out of the cleaning head of the accessory on the outside of the nozzle; ite head, downstream of the viewing window to form, as explained above, a protective barrier in the form of fluid.
  • said cleaning head 4 is formed by a separate part of the casing 2. Said cleaning head 4 is in the form of a cap to be positioned around the viewing window 31 at the corresponding end of the body 30 of the vision system 3.
  • Said cap 4 is then shaped to define in cooperation with the inner wall of the casing 2, said nozzle neck 41 of each acceleration / depression portion 400.
  • said cleaning head 4 is formed in one piece with the envelope 2.
  • Said cleaning head 4 comprises a portion 43 forming an insertion limit stop in said casing 2 of the end of the elongate body 30 of the vision system 3 provided with said viewing window 31.
  • Each vacuum duct 41 opens at said insertion limit stop 43 and therefore facing the viewing window 31.
  • said cleaning head 4 is an annular element coaxial with the axis of the casing 2.
  • said annular cleaning head 4 comprises six parts of acceleration / depression 400. Said parts acceleration / depression 400 are distributed circumferentially around the axis of the cleaning head 4 being spaced from each other at the same angle.
  • said fluid circulation passage 23 has a helical shape with an axis coinciding with the axis of the envelope 2.
  • the air flow passage is substantially straight and annular section. It can be provided that axial ribs spaced angularly from each other are arranged projecting from the inner wall of the envelope to define fluid circulation channels between the envelope and the body of the vision system.
  • each nozzle neck 40 has the following characteristics:
  • nozzle neck passage diameter of the order of 0.40 mm
  • each vacuum duct 41 has a diameter of the order of 0.20 mm.
  • the invention also relates to an assembly formed of an accessory as described above and a flange system 6 comprising a flange 60 intended to be clamped around the body of a tool 10 such as a surgical tool, for example a dental surgery tool.
  • a tool 10 such as a surgical tool, for example a dental surgery tool.
  • Led it flange system 6 includes a flange 60 and a clamping / unclamping device 60 flange around the body of the tool 10.
  • the accessory is provided with coupling means to the flange system 6 which are here in the form of a connecting member 5.
  • said connecting member 5 comprises a pivotal mobility with respect to said locking system.
  • flange 6 about an axis orthogonal to the axis of the casing 2 of the accessory so as to allow to tilt the accessory 2 and thus the endoscope 3 to orient it in the desired direction.
  • the connecting member 5 has a body formed in one piece with the casing 2 of the accessory.
  • the body of the connecting member is a separate part of the accessory.
  • the body of the connecting member has a through opening for the insertion of the casing 2 of the accessory through the body of the connecting member and said connecting member comprises means for maintaining the said envelope inside the connecting member.
  • the fastening flange 6 comprises at least two articulated portions 61, 62 between them, in the manner of two jaws, between a closing position of the flange for surrounding the tool and an opening position of the flange allowing remove the tool from the flange.
  • Said flange is also equipped with clamping / loosening means of the flange allowing, in the closed state of the flange around the tool to tighten / loosen said flange around the tool.
  • Said tightening / loosening means of the flange comprise a rod 7 provided at one of its ends with a first part 50 of generally at least partially spherical shape, called ball 50, coupled to the connecting member and to or in the vicinity its other end of a second ball 70 provided with a lever 8.
  • Said second ball 70 is pivotally mounted on the rod along a pivot axis 71, forming a pivot axis of the lever, which is off-center with respect to the center of the second ball 70.
  • the lever 8 is thus mounted movably between a so-called raised position in which the balls 50, 70 are spaced apart from each other along the axis of the rod 7 and a so-called lowered position in which the balls 50, 70 are spaced apart from one another along the axis of the rod 7.
  • Said rod 7 has a thread intended to cooperate with a tapped hole in the ball 50 for the coupling of the rod 7 to said ball 50.
  • the rod 7 can be fix 50 to the ball being more or less embedded in said ball by screwing.
  • Each jaw 61, 62 of the flange comprises, at the free end of said jaw, a portion 67 intended to form an at least partial housing for one of the balls 50, 70.
  • said jaws In the closed position of the jaws, said jaws have a part which delimits a passage opening for receiving the rod 7, said passage opening opens into the housing portions 67 balls 50, 70.
  • Said housing portions 67 are shaped such that in the closed position of the flange, the rod 7 can be introduced into the passage opening 63 so as to position the balls 50, 70 located at the ends of the rod 7 opposite their respective housing portion 63 defined in the flange.
  • the rod can be screwed deeper into the ball 50 by rotation of the rod with the lever 8 secured to the rod 7 by the ball 70 so as to engage the balls 50, 70 in the respective housing portions 67 of the flange.
  • Said lever 8 can then be lowered to pivot the ball 70 off-center relative to the rod to further bring the balls 50, 70 together by exerting on the walls of the ball housing a force in the direction of a clamping of the jaws one against the other.
  • the jaw 61 comprises a receiving groove 68 of the lever in the lowered position of said lever 8.
  • the loosening and opening of the flange is performed by reversing the steps described below.
  • the lever 8 is raised by means of which the rod 7 is rotated in the direction of unscrewing to move the balls 50, 70 away from each other in order to allow the opening of the flange as shown in Figure 3A.
  • the tool 10 can then be taken out of the flange 60 and the assembly formed of the accessory and the endoscope 3 can be decoupled from the flange 60 by taking out the rod 7 and the balls 50, 70 from their housings 63, 67 formed in the flange 60.
  • said flange In the closed state of the jaws of the flange, said flange has an inner peripheral wall of generally frustoconical shape, so that the flange can be mounted on a part of the body of the tool 1 0 of generally frustoconical shape, in one given position along said body.
  • the mounting of the flange can be performed in a repeatable manner, without having to worry about finding the position of positioning of the flange along the body of said tool, since the frustoconical female portion formed by the inner wall of the flange can be applied to the frustoconical outer peripheral wall of the body of said tool in only one position along the axis of said tool.
  • the ball 50 which forms a part of said connecting member is pivotally mounted relative to the part of the connecting member 5. which is secured to the tubular casing 2 of the accessory. Mobility of pivoting of the member of 1'aison allows to incl iner the accessory while retaining the accessory coupled to said tool 10 through the flange 60 clamped on the body of said tool 10. It can also be provided as illustrated in Figure 3, to equip the fluid supply line 200 with fastening means 9, for example by clipping, in different positions along the body of the tool 10.

Abstract

The invention relates to a cleaning accessory for a viewing system, consisting of an elongate body provided with a viewing window at one end thereof, said accessory including a tubular housing (2) inside which the end portion of the elongate body of the viewing system provided with said viewing window is to be inserted. Said accessory includes a space for receiving the viewing window (31) of the viewing system, and a passage (23) for a fluid, such as air. According to the invention, said accessory further includes a cleaning head (4) forming, alone or together with the housing (2), at least one acceleration/negative-pressure portion (400) including a nozzle throat (40), located in the extension of said fluid passage, and a negative-pressure pipe (41) connected to said nozzle throat (40) as well as to said space for receiving the viewing window. The invention also relates to a cleaning assembly including such an accessory.

Description

ACCESSOIRE DE NETTOYAGE POUR SYSTEME DE VISION ET ENSEMBLE DE NETTOYAGE CORRESPONDANT La présente invention concerne de manière générale le nettoyage des systèmes de vision, tels que les endoscopes.  The present invention relates generally to the cleaning of vision systems, such as endoscopes.
L'invention concerne plus particulièrement un accessoire de nettoyage pour système de vision, tel qu'endoscope, ledit système de vision étant du type formé d'un corps allongé équipé à une extrémité d'une fenêtre de vision. Ledit accessoire comprend une enveloppe tubulaire à l'intérieur de laquelle est destinée à être introduite au moins la partie d'extrémité du corps allongé du système de vision munie de ladite fenêtre de vision, ledit accessoire présentant un emplacement de réception de ladite fenêtre de vision du système de vision. Ledit accessoire comprend également un passage de fluide, tel que de l'air. L'invention concerne également un ensemble de nettoyage comprenant un tel accessoire. The invention more particularly relates to a cleaning accessory for a vision system, such as an endoscope, said vision system being of the type formed of an elongated body equipped at one end with a viewing window. Said accessory comprises a tubular casing inside which is intended to be introduced at least the end portion of the elongate body of the vision system provided with said viewing window, said accessory having a location for receiving said viewing window of the vision system. The accessory also includes a fluid passage, such as air. The invention also relates to a cleaning assembly comprising such an accessory.
On connaît de l'état de la technique et notamment du document WO2009/055043 un accessoire de nettoyage pour endoscope tel que décrit ci- dessus. Cependant, dans l'accessoire proposé par le document WO2009/055043, le fluide est un gaz qui est éjecté de l'accessoire au voisinage de la fenêtre de vision de l'endoscope de manière à générer une enveloppe de gaz annulaire autour de ladite fenêtre de vision. Cette enveloppe annulaire de gaz évacuée autour de la fenêtre de vision ne permet pas d'obtenir un nettoyage satisfaisant de cette fenêtre de vision. En outre, un tel flux de gaz éjecté en sortie de l'accessoire autour de la fenêtre de vision génère devant la fenêtre de vision un écoulement turbulent qui risque de ramener d'éventuelles saletés contre la fenêtre de vision. It is known from the state of the art and in particular from WO2009 / 055043 a cleaning accessory for an endoscope as described above. However, in the accessory proposed by the document WO2009 / 055043, the fluid is a gas that is ejected from the accessory in the vicinity of the viewing window of the endoscope so as to generate an annular gas envelope around said window of vision. This annular envelope of gas evacuated around the viewing window does not provide a satisfactory cleaning of this window of vision. In addition, such a flow of gas ejected at the outlet of the accessory around the viewing window generates in front of the viewing window a turbulent flow that may bring back any dirt against the viewing window.
Le document WO 2009/143201 décrit également un accessoire pour endoscope qui comprend une pluralité d'orifices d'éjection de fluide alimentés par une entrée commune. Cet accessoire permet d'éjecter du flu ide pour nettoyer la cavité corporel le dans laq uel le est introd u it l'endoscope . Cependant, les orifices d'éjection de fluide qui sont ménagés dans cet accessoire ne permettent pas de nettoyer la fenêtre de vision de l'endoscope. En effet, l'axe de chacun de ces orifices d'éjection de fluide est sensiblement parallèle à l'axe de l'endoscope de sorte que le fluide éjecté par ces orifices est dirigé vers la cavité à nettoyer et non pas vers la fenêtre de vision. WO 2009/143201 also describes an endoscope accessory which comprises a plurality of fluid ejection orifices fed with by a common entrance. This accessory ejects fluid to clean the body cavity where it is introduced into the endoscope. However, the fluid ejection ports that are formed in this accessory do not clean the viewing window of the endoscope. Indeed, the axis of each of these fluid ejection orifices is substantially parallel to the axis of the endoscope so that the fluid ejected by these orifices is directed to the cavity to be cleaned and not to the window of vision.
En outre, l'agencement de ces orifices d'éjection de fluide risque de générer un écoulement turbulent pouvant ramener des saletés sur la fenêtre de vision, sans que l'accessoire soit muni d'un système de nettoyage de ladite fenêtre de vision. In addition, the arrangement of these fluid ejection ports may generate a turbulent flow that can bring dirt on the viewing window, without the accessory is provided with a cleaning system of said viewing window.
Enfin, un tel accessoire ne permet pas de bénéficier d'une vitesse d'éjection de fluide importante en sortie desdits orifices d'éjection, sans augmenter fortement la pression d'al imentation du fl u ide destinée à al imenter l'entrée dudit accessoire commune aux différents orifices d'éjection. Finally, such an accessory does not make it possible to benefit from a high fluid ejection speed at the outlet of said ejection orifices, without greatly increasing the feed pressure of the fluid intended to supply the inlet of said accessory. common to the various ejection ports.
La présente invention a pour but de proposer un accessoire de nettoyage pour système de vision, tel qu'endoscope, permettant un nettoyage efficace de la fenêtre de vision. The object of the present invention is to propose a cleaning accessory for a vision system, such as an endoscope, enabling efficient cleaning of the viewing window.
Un autre but de l'invention est de proposer un accessoire de nettoyage pour système de vision, tel qu'endoscope, permettant de prévenir le dépôt de saletés sur la fenêtre de vision. Another object of the invention is to provide a cleaning accessory for a vision system, such as endoscope, to prevent the deposition of dirt on the viewing window.
A cet effet, l'invention a pour objet un accessoire de nettoyage pour système de vision, tel qu'endoscope, ledit système de vision étant du type formé d'un corps allongé équipé à une extrémité d'une fenêtre de vision, For this purpose, the subject of the invention is a cleaning accessory for a vision system, such as an endoscope, said vision system being of the type formed of an elongated body equipped at one end with a viewing window,
ledit accessoire comprenant une enveloppe tubulaire à l'intérieur de laquelle est destinée à être introduite au moins la partie d'extrémité du corps allongé du système de vision mu n ie de lad ite fenêtre de vision, ledit accessoire comprenant également un emplacement de réception de la fenêtre de vision du système de vision et un passage de fluide, tel que de l'air, said accessory comprising a tubular casing inside which is intended to be introduced at least the end portion of the elongated body of the vision system mu n ie of the ite vision window, said accessory also comprising a location for receiving the vision window of the vision system and a fluid passage, such as air,
caractérisé en ce que ledit accessoire comprend également au moins une tête dite de nettoyage formant, seule ou en coopération avec l'enveloppe, au moins une partie dite d'accélération/dépression comprenant un col de tuyère, situé dans le prolongement dudit passage de fluide, et débouchant de ladite tête pour former un orifice d'éjection de fluide et, un conduit dit de dépression s'étendant transversalement à l'axe du col de tuyère et débouchant, d'une part, dans ledit col de tuyère et, d'autre part, au niveau dudit emplacement de réception de la fenêtre de vision du système de vision de manière à créer une zone d'aspiration devant la fenêtre de vision. characterized in that said accessory also comprises at least one so-called cleaning head forming, alone or in cooperation with the casing, at least one so-called acceleration / depression portion comprising a nozzle neck, located in the extension of said fluid passage and opening from said head to form a fluid ejection port and a so-called vacuum duct extending transversely to the axis of the nozzle neck and opening, on the one hand, into said nozzle neck and, on the other hand, at said receiving location of the vision window of the vision system so as to create a suction zone in front of the viewing window.
Le ou chaque col de tuyère permet d'accélérer le fluide amené par le passage de fluide, pour augmenter sa vitesse d'éjection en sortie du col de tuyère de manière à générer, par l'intermédiaire du conduit de dépression qui débouche transversalement à l'intérieur dudit col de tuyère, une zone de dépression au niveau de la fenêtre de vision du système de vision permettant de décoller par aspiration les saletés présentes sur la fenêtre de vision. Le conduit de dépression forme également une zone de recirculation de sorte qu'une éventuelle saleté qui parviendrait à franchir l'écran formé par le flux de gaz éjecté de l'accessoire serait entraînée à travers le conduit de dépression, par aspiration, puis éjectée à grande vitesse en sortie du col d'accélération. Une telle conception de la tête de l'accessoire pour endoscope qui comprend un col de tuyère raccordé au passage de fluide et débouchant de la tête de l'accessoire, et sur lequel est raccordé un conduit de dépression débouchant au niveau de la fenêtre de vision permet de se servir de l'accélération du fluide destiné à être éjecté en sortie du col de tuyère, pour créer par effet venturi une dépression dans ledit canal de dépression et ainsi générer un phénomène d'aspiration au niveau de la fenêtre de vision de l'endoscope introduit dans ledit accessoire, permettant de nettoyer ladite fenêtre de vision et d'éjecter les saletés par la sortie du col de tuyère. En outre, ledit flux d'air accéléré et éjecté en sortie du col de tuyère permet de former une barrière de fluide en aval de la fenêtre de vision, ce qui la protège d'éventuelles projections. Ainsi, le fluide accéléré éjecté en sortie du col de tuyère permet de former une barrière de fluide permettant de protéger de manière préventive la fenêtre de vision, et le conduit de dépression qui débouche à proximité de la fenêtre de vision permet, lorsque la fenêtre de vision est sale, d'aspirer lesdites saletés et de les faire recirculer à travers le col de tuyère pour être éjectées par le flux de fluide accéléré en sortie dudit col de tuyère. The or each nozzle neck makes it possible to accelerate the fluid supplied by the fluid passage, in order to increase its ejection speed at the outlet of the nozzle neck so as to generate, via the vacuum duct, which opens transversely to the nozzle. inside said nozzle neck, a zone of depression at the viewing window of the vision system to take off by suction the dirt present on the viewing window. The vacuum duct also forms a recirculation zone so that any dirt that manages to cross the screen formed by the flow of gas ejected from the accessory would be driven through the vacuum duct, by suction, then ejected to high speed output of the acceleration collar. Such a design of the head of the accessory for endoscope which comprises a nozzle neck connected to the fluid passage and opening out of the head of the accessory, and on which is connected a vacuum duct opening at the level of the viewing window. makes it possible to use the acceleration of the fluid intended to be ejected at the outlet of the nozzle neck, to create by venturi effect a depression in said vacuum channel and thus to generate a suction phenomenon at the viewing window of the nozzle; endoscope inserted into said accessory, for cleaning said viewing window and ejecting Dirt by the outlet of the nozzle neck. In addition, said air flow accelerated and ejected at the outlet of the nozzle neck makes it possible to form a fluid barrier downstream of the viewing window, which protects it from possible projections. Thus, the accelerated fluid ejected at the outlet of the nozzle neck makes it possible to form a fluid barrier making it possible to protect the viewing window in a preventative manner, and the vacuum duct that opens near the viewing window makes it possible, when the window of vision vision is dirty, suck said dirt and recirculate through the nozzle neck to be ejected by the accelerated fluid flow output of said nozzle neck.
Selon une caractéristique avantageuse de l'invention, la ou chaque partie formant col de tuyère débouche axialement hors de l'enveloppe tubulaire de manière à générer un flux d'air à grande vitesse devant la fenêtre de vision empêchant les détritus de venir sur la fenêtre de vision. According to an advantageous characteristic of the invention, the or each nozzle neck portion opens axially out of the tubular casing so as to generate a high-speed air flow in front of the vision window to prevent the detritus from coming onto the window of vision.
Le flux de gaz accéléré par le col puis expulsé par le divergent de la tuyère en sortie de l'accessoire permet de former un écran de flux de gaz à grande vitesse autour de la fenêtre de vision, qui protège ladite fenêtre de vision contre le dépôt d'éventuelles saletés. En particulier, l'accélération du flux de gaz par le col et son éjection en aval de la fenêtre de vision permet de limiter le risque que des saletés arrivent depuis l'extérieur à traverser la barrière formée par ledit flux de gaz expulsé à grande vitesse. The flow of gas accelerated by the neck and then expelled by the divergent nozzle at the outlet of the accessory makes it possible to form a high-speed gas flow screen around the viewing window, which protects said viewing window against the deposit possible dirt. In particular, the acceleration of the flow of gas through the neck and its ejection downstream of the viewing window makes it possible to limit the risk of dirt coming from outside to cross the barrier formed by said gas flow expelled at high speed. .
Selon une caractéristique avantageuse de l'invention, ledit passage de fluide présente une forme en hélice d'axe confondu avec l'axe de l'enveloppe. According to an advantageous characteristic of the invention, said fluid passage has a spiral shape of axis coincident with the axis of the envelope.
On obtient ainsi un canal de circulation d'air hélicoïdal qui permet de générer u n vortex en sortie de l 'accessoi re, ce q u i forme u n écran d e fl u ide tourbillonnaire d'axe sensiblement parallèle à l'axe de la fenêtre de vision. Un tel écran de fluide tourbillonnaire protège efficacement la fenêtre de vision à encontre de saletés qui seraient projetées en direction de la fenêtre de vision. Selon une première caractéristique avantageuse de l'invention, ladite tête de nettoyage est située à, ou au voisinage de, l'extrémité de l'enveloppe tubulaire au niveau de laquelle est destinée à être positionnée la fenêtre de vision du système de vision. A helical air circulation channel is thus obtained which makes it possible to generate a vortex at the output of the accessory, which forms a swirling fl uid screen of axis substantially parallel to the axis of the viewing window. Such a vortex fluid screen effectively protects the viewing window against dirt that would be projected towards the viewing window. According to a first advantageous characteristic of the invention, said cleaning head is located at or near the end of the tubular envelope at which is intended to be positioned the viewing window of the vision system.
Selon un mode de réalisation particulier de l'invention, ladite tête de nettoyage est formée par une pièce distincte de l'enveloppe. Avantageusement, ladite tête de nettoyage est alors conformée pour délimiter en coopération avec l'enveloppe ledit col de tuyère de ladite ou de chaque partie d'accélération/dépression. According to a particular embodiment of the invention, said cleaning head is formed by a separate part of the envelope. Advantageously, said cleaning head is then shaped to define in cooperation with the envelope said nozzle neck of said or each acceleration / depression portion.
Selon un autre mode de réalisation de l'invention, ladite tête de nettoyage est formée d'une seule pièce avec l'enveloppe. Selon une caractéristique avantageuse de l'invention, ladite tête de nettoyage comprend une partie formant butée de l im itation d'insertion dans lad ite enveloppe de l'extrémité du corps allongé du système de vision munie de ladite fenêtre de vision. La partie formant butée de limitation d'insertion permet d'assurer un positionnement fiable, aisé, rapide et précis du système de vision dans l'enveloppe tubulaire. En particul ier, le fait de prévoir que lad ite tête de nettoyage comprend une telle butée permet de positionner précisément la fenêtre de vision du système de vision au niveau du débouché du conduit de dépression opposé à l'extrémité dudit conduit qui débouche dans le col de tuyère, ce qui assure une aspiration fiable et efficace des saletés éventuellement présentes sur la fenêtre de vision. According to another embodiment of the invention, said cleaning head is formed in one piece with the envelope. According to an advantageous characteristic of the invention, said cleaning head comprises an abutment portion of insertion imitation in the said envelope of the end of the elongate body of the vision system provided with said viewing window. The insertion limit stop portion provides for reliable, easy, fast and accurate positioning of the vision system in the tubular casing. In particular, the fact of providing that the ite cleaning head includes such a stop allows to precisely position the viewing window of the vision system at the outlet of the vacuum duct opposite the end of said duct which opens into the neck of nozzle, which ensures a reliable and effective suction of dirt possibly present on the viewing window.
Selon une caractéristique avantageuse de l'invention, ladite tête de nettoyage est un élément annulaire coaxial à l'axe de l'enveloppe. Ladite tête de nettoyage comprend plusieurs parties d'accélération/dépression formées chacune d'un col de tuyère et d'un conduit de dépression débouchant, d'une part, dans ledit col de tuyère et, d'autre part, côté face intérieure de la tête de nettoyage annulaire, lesdites parties d'accélération/dépression étant réparties circonférentiellement autour de l'axe de la tête de nettoyage. La conception de la tête de nettoyage sous forme de plusieurs parties d'accélération/dépression réparties circonférentiellement autour de l'axe de ladite tête de nettoyage permet d'améliorer le nettoyage de la fenêtre de vision en assurant une aspiration des saletés en n'importe quelle zone de la fenêtre de vision. According to an advantageous characteristic of the invention, said cleaning head is an annular element coaxial with the axis of the envelope. Said cleaning head comprises several acceleration / depression portions each formed of a nozzle neck and a depression duct opening, a on the inside of the annular cleaning head, said acceleration / vacuum portions being distributed circumferentially about the axis of the cleaning head. The design of the cleaning head in the form of several parts of acceleration / depression distributed circumferentially around the axis of said cleaning head makes it possible to improve the cleaning of the viewing window by ensuring dirt suction in any which area of the vision window.
Selon une caractéristique avantageuse de l'invention, lesdites parties d'accélération/dépression sont écartées angulairement les unes des autres d'un même angle autour de l'axe de la tête de nettoyage annulaire. Un espacement régulier des parties d'accélération/dépression autour de l'axe de la tête de nettoyage annulaire permet de bénéficier d'une aspiration homogène autour de la fenêtre de vision. According to an advantageous characteristic of the invention, said acceleration / depression portions are spaced angularly from each other at the same angle around the axis of the annular cleaning head. Regular spacing of the acceleration / depression portions around the axis of the annular cleaning head provides uniform suction around the viewing window.
L'invention concerne également un ensemble de nettoyage formé d'un accessoire de nettoyage, d'une bride apte à entourer le corps d'un outil, tel qu'un outil de chirurgie dentaire, et des moyens de couplage de l'accessoire à la bride, The invention also relates to a cleaning assembly consisting of a cleaning accessory, a flange adapted to surround the body of a tool, such as a dental surgery tool, and coupling means of the accessory to the bridle,
caractérisé en ce que l'accessoire de nettoyage est tel que décrit ci-dessus, et en ce que lesdits moyens de couplage de l'accessoire à la bride comportent une mobilité de pivotement de l'accessoire par rapport à la bride autour d'un axe orthogonal à l'axe de l'enveloppe tubulaire de l'accessoire. characterized in that the cleaning accessory is as described above, and in that said means for coupling the accessory to the flange comprise a pivoting mobility of the accessory relative to the flange around a orthogonal axis to the axis of the tubular casing of the accessory.
Autrement dit, les moyens de couplage de l'accessoire à la bride permettent audit accessoire de pivoter par rapport à la bride. In other words, the coupling means of the accessory to the flange allow said accessory to pivot relative to the flange.
De préférence, ladite mobilité de pivotement est formée par une partie d'un organe de liaison de l'accessoire à la bride, montée pivotante par rapport au reste de l'organe de liaison autour d'un axe perpendiculaire à l'axe de l'enveloppe tubulaire de l'accessoire. Preferably, said pivotal mobility is formed by a portion of a connecting member of the accessory to the flange, pivotally mounted relative to the rest of the connecting member about an axis perpendicular to the axis of the tubular casing of the accessory.
Selon une caractéristique avantageuse de l'ensemble selon l'invention, du type pour lequel le corps de l'outil destiné à recevoir la bride présente une partie de forme tronconique, la face interne de la bride est de forme tronconique à l'état fermé de la bride. According to an advantageous characteristic of the assembly according to the invention, of the type for which the body of the tool intended to receive the flange has a part of frustoconical shape, the internal face of the flange is frustoconical in the closed state of the bridle.
Selon une caractéristique avantageuse de l'ensemble selon l'invention, ledit ensemble comprend des moyens de serrage de la bride autour du corps de l'outil , formés d'une tige mun ie à une extrémité d'une première pièce, de préférence une pièce au moins partiellement sphérique, équipée d'un levier, l'extrémité opposée de ladite tige étant mun ie d'une deuxième pièce, de préférence une pièce au moins partiellement sphérique, ladite deuxième pièce étant couplée à l'accessoire, According to an advantageous characteristic of the assembly according to the invention, said assembly comprises means for clamping the flange around the body of the tool, formed of a rod provided at one end of a first part, preferably a at least partially spherical piece, equipped with a lever, the opposite end of said rod being provided with a second piece, preferably an at least partially spherical piece, said second piece being coupled to the accessory,
ladite première pièce étant montée pivotante autour d'un axe orthogonal à l'axe de la tige entre une position écartée de la deuxième pièce et une position rapprochée de ladite deuxième pièce, suivant la direction axiale de la tige, et la bride comprenant deux mâchoires montées pivotantes l'une par rapport à l'autre entre une position fermée et une position ouverte, said first piece being pivotally mounted about an axis orthogonal to the axis of the rod between a position spaced from the second piece and a position close to said second piece, in the axial direction of the rod, and the flange comprising two jaws pivotally mounted relative to one another between a closed position and an open position,
chaque mâchoire comprenant une partie apte à former un logement de réception au moins partiel d'une des première et deuxième pièces, lesdites première et deuxième pièces et lesdits logements étant configurés de telle sorte que, à l'état positionné des première et deuxième pièces reliées entre elles par ladite tige, au niveau des parties de logement de la bride, lesdites prem ière et deuxième pièces exercent, en position rapprochée desdites première et deuxième pièces, des efforts sur leur logement dans le sens d'un serrage des mâchoires de la bride l'une contre l'autre. Avantageusement, ladite deuxième pièce est montée rotative par rapport à l'accessoire autour d'un axe parallèle à l'axe de ladite tige. Ladite deuxième pièce, qui peut être considérée comme formant partie desdits moyens de couplage, forme ladite mobilité de pivotement de l'accessoire par rapport à la bride. each jaw including a portion adapted to form an at least partial receiving housing of one of the first and second parts, said first and second parts and said housings being configured such that in the positioned state of the first and second connected parts between them by said rod, at the housing portions of the flange, said first and second parts exert, in the close position of said first and second parts, efforts on their housing in the direction of clamping the jaws of the flange one against the other. Advantageously, said second piece is rotatably mounted relative to the accessory about an axis parallel to the axis of said rod. Said second piece, which may be considered as forming part of said means for coupling, form said pivotal mobility of the accessory relative to the flange.
L'invention sera bien comprise à la lecture de la description suivante d'exemples de réalisation, en référence aux dessins annexés dans lesquels :The invention will be better understood on reading the following description of exemplary embodiments, with reference to the appended drawings in which:
- la figure 1 est une vue en coupe axiale d'un accessoire selon l'invention qui équipe un endoscope, suivant un premier mode de réalisation dudit accessoire;- Figure 1 is an axial sectional view of an accessory according to the invention which equips an endoscope, according to a first embodiment of said accessory;
- la figure 1A est une vue en coupe axiale et en perspective de l'accessoire et de l'endoscope de la figure 1 ; FIG. 1A is an axial and perspective sectional view of the accessory and the endoscope of FIG. 1;
- la figure 2 est une vue en perspective et en coupe axiale d'un accessoire selon un deuxième mode de réalisation de l'invention, le système de vision n'étant par représenté pour montrer la forme hélicoïdale du passage de fluide ;FIG. 2 is a perspective view in axial section of an accessory according to a second embodiment of the invention, the vision system not being shown to show the helical shape of the fluid passage;
- la figure 2 est une vue en perspective non coupée de l'accessoire de la figure 2 dans lequel a été introduit le système de vision ; FIG. 2 is an uncut perspective view of the accessory of FIG. 2 in which the vision system has been introduced;
- la figure 3 est une vue en perspective de l'accessoire selon l'invention couplé à un outil de dentiste par une bride de fixation mun ie d 'un système de serrage/desserrage sur le corps de l'outil, ledit système de serrage comprenant un levier dont la position relevée permet de desserrer la bride ; FIG. 3 is a perspective view of the accessory according to the invention coupled to a dentist's tool by a fixing flange provided with a clamping / loosening system on the body of the tool, said clamping system comprising a lever whose raised position allows to loosen the flange;
- la figure 3A est une vue de la figure 3 en position ouverte de la bride de manière à libérer l'outil et découpler l'accessoire de la bride;  - Figure 3A is a view of Figure 3 in the open position of the flange so as to release the tool and uncouple the accessory of the flange;
- la figure 4 est une vue en perspective de la bride des figures 3 et 3A ;  FIG. 4 is a perspective view of the flange of FIGS. 3 and 3A;
- la figure 5 est une vue en perspective de l'accessoire des figures 3 et 3A équipé d'un organe de liaison couplé au système de serrage/desserrage de la bride.  - Figure 5 is a perspective view of the accessory of Figures 3 and 3A equipped with a connecting member coupled to the clamping system / loosening of the flange.
En référence aux figures et comme rappelé ci-dessus, l'invention concerne un accessoire de nettoyage pour système de vision 3, tel qu'un endoscope. Ledit système de vision est du type formé d'un corps allongé 30 équipé à une extrémité d'une fenêtre de vision 31 . With reference to the figures and as recalled above, the invention relates to a cleaning accessory for a vision system 3, such as an endoscope. Said vision system is of the type formed of an elongated body 30 equipped at one end with a viewing window 31.
Ledit accessoire comprend une enveloppe tubulaire 2 à l'intérieur de laquelle est destinée à être introduite au moins la partie d'extrémité du corps allongé 30 du système de vision 3 munie de ladite fenêtre de vision 31 . Ladite enveloppe présente un emplacement de réception de ladite partie d'extrémité du système de vision 3 munie de ladite fenêtre de vision 31 . Ledit accessoire comprend également un passage 23 de fluide, tel que de l'air, situé entre la face périphérique externe du corps du système de vision 3 et la face périphérique externe de l'enveloppe 2. Ledit passage 23 forme un chemin d'amenée de flu ide pour le ou chaque orifice d'éjection de fluide comme détaillé ci-après. Said accessory comprises a tubular envelope 2 inside which is intended to be introduced at least the end portion of the elongate body 30 vision system 3 provided with said viewing window 31. Said envelope has a location for receiving said end portion of the vision system 3 provided with said viewing window 31. Said accessory also comprises a passage 23 of fluid, such as air, located between the outer peripheral face of the body of the vision system 3 and the outer peripheral face of the envelope 2. Said passage 23 forms a feed path fluid for the or each fluid ejection port as detailed below.
Ledit passage de fluide 23 peut être réalisé de différentes manières. Le canal de circulation de fluide 23 est de préférence délimité par ladite enveloppe 2 en coopération avec le corps allongé 30 du système de vision 3. Dans l'exemple illustré aux figures 1 et 1 A et détaillé ci-après, le passage de fluide 23 est ménagé entre la face interne de la paroi périphérique de l'enveloppe tubulaire 2 et la face externe du corps allongé 30 du système de vision 3. En variante, on peut prévoir que le passage de fluide 23 est ménagé au moins partiellement dans l'épaisseur de l'enveloppe 2. En particulier, dans l'exemple illustré aux figures 2 et 2A, le passage de flu ide 23 est ménagé dans l'épaisseur de l'enveloppe 2 et la face externe du corps allongé 30 du système de vision délimite une partie de la paroi dudit passage 23. Said fluid passage 23 can be made in different ways. The fluid circulation channel 23 is preferably delimited by said envelope 2 in cooperation with the elongate body 30 of the vision system 3. In the example illustrated in FIGS. 1 and 1A and detailed below, the fluid passage 23 is provided between the inner face of the peripheral wall of the tubular casing 2 and the outer face of the elongate body 30 of the vision system 3. In a variant, provision may be made for the fluid passage 23 to be provided at least partially in the In particular, in the example illustrated in FIGS. 2 and 2A, the fluid passage 23 is formed in the thickness of the envelope 2 and the external face of the elongate body 30 of the vision system. defines a portion of the wall of said passage 23.
Avantageusement, l'enveloppe 2 de l'accessoire comprend des moyens de raccordement à une conduite d'amenée 200 de fluide (voir figure 3) reliée à des moyens d'injection de fluide, tels qu'une pompe couplée à un réservoir de fluide. Advantageously, the casing 2 of the accessory comprises means for connection to a fluid supply line 200 (see FIG. 3) connected to fluid injection means, such as a pump coupled to a fluid reservoir. .
Comme illustré aux figures 1 , 1 A, 2, 2A l'enveloppe présente sur sa face externe au moins une, de préférence deux, nervure(s) d'étanchéité permettant d'assurer l'étanchéité dans la zone de raccordement entre l'enveloppe de l'accessoire et la conduite d'amenée de fluide. Bien entendu, la conduite d'amenée de fluide débouche dans le passage de fluide délimité entre le corps allongé du système de vision ou ménagé dans l'épaisseur de l'enveloppe de l'accessoire. As illustrated in FIGS. 1, 1A, 2, 2A, the casing has on its external face at least one, preferably two, sealing ribs which make it possible to seal in the connection zone between the casing of the accessory and the fluid supply line. Of course, the fluid supply pipe opens into the fluid passage defined between the body lengthened vision system or arranged in the thickness of the envelope of the accessory.
De manière caractéristique à l'invention, ledit accessoire est muni d'une tête 4 dite de nettoyage formant, seule ou en coopération avec l'enveloppe 2, plusieurs parties dites d'accélération/dépression 400 comprenant chacune un col de tuyère 40, situé dans le prolongement dudit passage 23 de fluide, et, un cond u it d it d e d épress ion 41 . Led it cond u it d e d épress ion s 'étend transversalement à l'axe du col de tuyère 40 et débouche, d'une part, dans ledit col de tuyère 40 et, d'autre part, côté intérieur de l'enveloppe 2, à proximité de la fenêtre de vision du système de vision. Characteristically to the invention, said accessory is provided with a so-called cleaning head 4 forming, alone or in cooperation with the casing 2, a plurality of so-called acceleration / depression portions 400 each comprising a nozzle neck 40, located in the extension of said fluid passage 23, and a conduction of depressing 41. The ductless conduction duct extends transversely to the axis of the nozzle neck 40 and opens, on the one hand, into said nozzle neck 40 and, on the other hand, inside the casing 2, near the vision window of the vision system.
Ledit col de tuyère est un rétrécissement de passage de fluide qui relie d'une part, une zone convergente de ladite partie d'accélération/dépression 400 qui forme l'entrée dudit col et qui communique avec ledit passage de fluide 23, et d'autre part une zone divergente de ladite partie d'accélération/dépression 400 qui forme la sortie dudit col. Said nozzle neck is a fluid passage narrowing which connects, on the one hand, a convergent zone of said acceleration / depression portion 400 which forms the inlet of said neck and which communicates with said fluid passage 23, and on the other hand a zone diverging from said acceleration / depression portion 400 which forms the output of said neck.
La sortie du col de tuyère (côté divergent), opposée à l'entrée dudit col (côté convergent), qui se situe dans le prolongement dudit passage de fluide, forme un orifice d'éjection de fluide. Cet orifice d'éjection de fluide débouche de la tête 4 de nettoyage, en aval de l'emplacement de réception de la fenêtre de vision de l'endoscope. Comme détaillé ci-après, la tête 4 de nettoyage correspond à une partie annulaire qu i peut être formée d'une seule pièce avec l'enveloppe 2 de l'accessoire ou par une pièce distincte de l'enveloppe 2. The exit of the nozzle neck (diverging side), opposite the inlet of said neck (convergent side), which is in the extension of said fluid passage, forms a fluid ejection orifice. This fluid ejection orifice opens out of the cleaning head 4, downstream of the receiving location of the endoscope viewing window. As detailed below, the cleaning head 4 corresponds to an annular portion that can be formed in one piece with the casing 2 of the accessory or by a separate part of the casing 2.
Chaq ue partie formant col de tuyère 40 débouche axialement hors de l'enveloppe tubulaire 2 de manière à générer un flux de fluide à grande vitesse en aval de la fenêtre de vision 31 pour former une barrière de flu ide à rencontre des détritus de venir sur la fenêtre de vision 31 . Ledit fluide est de préférence un gaz, tel que de l'air, de l'azote. Each nozzle neck portion 40 opens out axially out of the tubular casing 2 so as to generate a high velocity fluid flow downstream of the viewing window 31 to form a fluid barrier against detritus from coming on. the vision window 31. Said fluid is preferably a gas, such as air, nitrogen.
L'accélération du fluide dans le col de tuyère permet de créer une dépression dans le conduit de dépression correspondant et ainsi d'aspirer les saletés présentes sur la fenêtre de vision. The acceleration of the fluid in the nozzle neck makes it possible to create a vacuum in the corresponding vacuum duct and thus to suck the dirt present on the viewing window.
L'utilisation d'un col de tuyère pour accélérer le fluide acheminé par le passage de fluide 23 permet de bénéficier d'une vitesse d'éjection de fluide importante en sortie du ou de chaque col de tuyère, sans avoir à augmenter la pression d'alimentation dudit fluide injecté dans ledit passage de fluide 23. The use of a nozzle neck to accelerate the fluid conveyed by the fluid passage 23 makes it possible to benefit from a high fluid ejection speed at the outlet of the or each nozzle neck, without having to increase the pressure of the fluid. supplying said fluid injected into said fluid passage 23.
De préférence, le corps allongé 30 du système de vision est centré à l'intérieur de l'enveloppe de l'accessoire de sorte que le corps allongé 30 du système de vision 3 et l'enveloppe 2 de l'accessoire sont coaxiaux. Preferably, the elongate body 30 of the vision system is centered within the casing of the accessory so that the elongate body 30 of the vision system 3 and the casing 2 of the accessory are coaxial.
Chaq ue col de tuyère 40 est d 'axe sensibl ement paral l èl e à l 'axe de l'enveloppe 2. L'axe de l'orifice d'éjection de fluide formé par le débouché du ou de chaque col de tuyère s'étend ainsi sensiblement parallèlement à l'axe de l'enveloppe qui correspond sensiblement à l'axe de l'emplacement de réception de la fenêtre de vision. L'axe de l'emplacement de réception de la fenêtre de vision correspond à l'axe perpendiculaire au plan moyen de ladite fenêtre de vision de l'endoscope à l'état inséré de ladite fenêtre de vision dans l'emplacement correspondant de la tête de nettoyage de l'accessoire. Le système de vision 3 comprend des moyens d'acquisition d'image, tels qu'une caméra et/ou une lentille, disposés dans le corps du système de vision derrière la fenêtre de vision. On peut prévoir que lesdits moyens d'acquisition d'image comprennent une fibre optique. Avantageusement, l'accessoire selon l'invention est équipé de moyens de maintien activables/désactivables d u système de vision à l 'intérieur de l'enveloppe de l'accessoire. Ladite tête de nettoyage 4 est située à l'extrémité de l'enveloppe 2 tubulaire au niveau de laquelle est destinée à être positionnée la fenêtre de vision 31 du système de vision 3. En particulier, chaque conduit de dépression 41 débouche au niveau de la fenêtre de vision 31 du système de vision 3 à l'état introduit de dudit système de vision 3 dans l'enveloppe 2 de l'accessoire. Each nozzle neck 40 is axially substantially parallel to the axis of the casing 2. The axis of the fluid ejection orifice formed by the outlet of the or each nozzle throat thus extends substantially parallel to the axis of the envelope which substantially corresponds to the axis of the receiving location of the viewing window. The axis of the location of reception of the viewing window corresponds to the axis perpendicular to the mean plane of said viewing window of the endoscope in the inserted state of said viewing window in the corresponding location of the head cleaning the accessory. The vision system 3 comprises image acquisition means, such as a camera and / or a lens, arranged in the body of the vision system behind the viewing window. It can be provided that said image acquisition means comprise an optical fiber. Advantageously, the accessory according to the invention is equipped with means for holding the vision system on / off within the accessory envelope. Said cleaning head 4 is situated at the end of the tubular casing 2 at which the viewing window 31 of the vision system 3 is intended to be positioned. In particular, each vacuum duct 41 opens at the level of the vision window 31 of the vision system 3 in the introduced state of said vision system 3 in the envelope 2 of the accessory.
Avantageusement, l'axe du conduit de dépression est sensiblement parallèle au plan moyen de l'emplacement de réception de la fenêtre de vision de l'endoscope pour permettre de générer un flux d'aspiration sensiblement tangent à lad ite fenêtre de vision afin d'aspirer les éventuelles saletés présentes sur ladite fenêtre de vision et les faire re-circuler à travers le col de tuyère pour que lesdites saletés soient expulsées au niveau de la sortie dudit col qui débouche de la tête de nettoyage de l'accessoire côté extérieur de lad ite tête, en aval de la fenêtre de vision pour former, comme expliqué ci- dessus, une barrière de protection sous forme de fluide. Advantageously, the axis of the vacuum duct is substantially parallel to the mean plane of the reception location of the viewing window of the endoscope so as to make it possible to generate a suction flow substantially tangential to the viewing window so as to aspirate any dirt present on said viewing window and have it re-circulate through the nozzle neck so that said dirt is expelled at the outlet of said neck which opens out of the cleaning head of the accessory on the outside of the nozzle; ite head, downstream of the viewing window to form, as explained above, a protective barrier in the form of fluid.
Dans l'exemple illustré aux figures 1 et 1 A, ladite tête de nettoyage 4 est formée par une pièce distincte de l'enveloppe 2. Ladite tête de nettoyage 4 se présente sous la forme d'une coiffe destinée à être positionnée autour de la fenêtre de vision 31 au niveau de l'extrémité correspondante du corps 30 du système de vision 3. In the example illustrated in Figures 1 and 1A, said cleaning head 4 is formed by a separate part of the casing 2. Said cleaning head 4 is in the form of a cap to be positioned around the viewing window 31 at the corresponding end of the body 30 of the vision system 3.
Ladite coiffe 4 est alors conformée pour délimiter en coopération avec la paroi interne de l'enveloppe 2, ledit col de tuyère 41 de chaque partie d'accélération/dépression 400. Said cap 4 is then shaped to define in cooperation with the inner wall of the casing 2, said nozzle neck 41 of each acceleration / depression portion 400.
Dans l'exemple illustré aux figures 2 et 2A, ladite tête de nettoyage 4 est formée d'une seule pièce avec l'enveloppe 2. In the example illustrated in FIGS. 2 and 2A, said cleaning head 4 is formed in one piece with the envelope 2.
Ladite tête de nettoyage 4 comprend une partie 43 formant butée de limitation d'insertion dans ladite enveloppe 2 de l'extrémité du corps allongé 30 du système de vision 3 munie de ladite fenêtre de vision 31. Chaque conduit de dépression 41 débouche au niveau de ladite butée de limitation d'insertion 43 et donc en regard de la fenêtre de vision 31. Comme illustré plus particulièrement aux figures 1, 1A, 2 et 2A, ladite tête de nettoyage 4 est un élément annulaire coaxial à l'axe de l'enveloppe 2. Dans l'exemple illustré aux figures, ladite tête de nettoyage 4 annulaire comprend six parties d'accélération/dépression 400. Lesdites parties d'accélération/dépression 400 sont réparties circonférentiellement autour de l'axe de la tête de nettoyage 4 en étant écartées les unes des autres d'un même angle. Said cleaning head 4 comprises a portion 43 forming an insertion limit stop in said casing 2 of the end of the elongate body 30 of the vision system 3 provided with said viewing window 31. Each vacuum duct 41 opens at said insertion limit stop 43 and therefore facing the viewing window 31. As illustrated more particularly in FIGS. 1, 1A, 2 and 2A, said cleaning head 4 is an annular element coaxial with the axis of the casing 2. In the example illustrated in the figures, said annular cleaning head 4 comprises six parts of acceleration / depression 400. Said parts acceleration / depression 400 are distributed circumferentially around the axis of the cleaning head 4 being spaced from each other at the same angle.
Dans l'exemple illustré aux figures 2 et 2A, ledit passage de circulation de fluide 23 présente une forme en hélice d'axe confondu avec l'axe de l'enveloppe 2. In the example illustrated in FIGS. 2 and 2A, said fluid circulation passage 23 has a helical shape with an axis coinciding with the axis of the envelope 2.
En variante, comme dans l'exemple illustré aux figures 1 et 1A, on peut prévoir que le passage de circulation d'air soit sensiblement rectiligne et de section annulaire. On peut prévoir que des nervures axiales écartées angulairement les unes des autres soient ménagées en saillie de la paroi interne de l'enveloppe pour délimiter des canaux de circulation de fluide entre l'enveloppe et le corps du système de vision. Alternatively, as in the example illustrated in Figures 1 and 1A, it can be provided that the air flow passage is substantially straight and annular section. It can be provided that axial ribs spaced angularly from each other are arranged projecting from the inner wall of the envelope to define fluid circulation channels between the envelope and the body of the vision system.
Avantageusement, par exemple pour une enveloppe de longueur de l'ordre 20 mm et de diamètre de l'ordre de 3,4 mm, chaque col de tuyère 40 présente les caractéristiques suivantes : Advantageously, for example for an envelope of length of the order 20 mm and diameter of the order of 3.4 mm, each nozzle neck 40 has the following characteristics:
- un diamètre d'entrée de convergent de l'ordre 0, 80 mm ;  a convergent input diameter of the order 0, 80 mm;
- un diamètre de passage de col de tuyère de l'ordre de 0, 40 mm ;  a nozzle neck passage diameter of the order of 0.40 mm;
- un angle d'ouverture de convergent de l'ordre de 10° et un angle d'ouverture de divergent de l'ordre de 10°.  a convergence angle of convergence of the order of 10 ° and a diverging opening angle of the order of 10 °.
Préférentiellement, chaque conduit de dépression 41 présente un diamètre de l'ordre de 0, 20 mm. Preferably, each vacuum duct 41 has a diameter of the order of 0.20 mm.
Comme illustré aux figures 3 à 5, l'invention concerne également un ensemble formé d'un accessoire tel que décrit ci-dessus et d'un système de bride 6 comprenant une bride 60 destinée à être serrée autour du corps d'un outil 10, tel qu'un outil de chirurgie, par exemple un outil de chirurgie dentaire. As illustrated in Figures 3 to 5, the invention also relates to an assembly formed of an accessory as described above and a flange system 6 comprising a flange 60 intended to be clamped around the body of a tool 10 such as a surgical tool, for example a dental surgery tool.
Led it système de bride 6 com prend u n e brid e 60 et u n d ispositif de serrage/desserrage de la bride 60 autour du corps de l'outil 10. Led it flange system 6 includes a flange 60 and a clamping / unclamping device 60 flange around the body of the tool 10.
L'accessoire est muni de moyens de couplage au système de bride 6 qui se présentent ici sous la forme d'un organe de liaison 5. Comme détaillé ci-après, ledit organe de liaison 5 comprend une mobilité de pivotement par rapport audit système de bride 6 autour d'un axe orthogonal à l'axe l'enveloppe 2 de l'accessoire de manière à permettre d'incliner l'accessoire 2 et donc l'endoscope 3 pour l'orienter dans la direction souhaitée. The accessory is provided with coupling means to the flange system 6 which are here in the form of a connecting member 5. As detailed below, said connecting member 5 comprises a pivotal mobility with respect to said locking system. flange 6 about an axis orthogonal to the axis of the casing 2 of the accessory so as to allow to tilt the accessory 2 and thus the endoscope 3 to orient it in the desired direction.
On peut prévoir que l'organe de liaison 5 présente un corps formé d'une seule pièce avec l'enveloppe 2 de l'accessoire. En variante, on peut prévoir que le corps de l'organe de liaison est une pièce distincte de l'accessoire. Dans ce cas, le corps de l'organe de liaison présente une ouverture traversante pour l'insertion de l'enveloppe 2 de l'accessoire à travers le corps de l'organe de liaison et ledit organe de liaison comprend des moyens de maintien de ladite enveloppe à l'intérieur de l'organe de liaison. It can be provided that the connecting member 5 has a body formed in one piece with the casing 2 of the accessory. Alternatively, it can be provided that the body of the connecting member is a separate part of the accessory. In this case, the body of the connecting member has a through opening for the insertion of the casing 2 of the accessory through the body of the connecting member and said connecting member comprises means for maintaining the said envelope inside the connecting member.
La bride de fixation 6 comprend au moins deux parties articulées 61 , 62 entre elles, à la manière de deux mâchoires, entre une position de fermeture de la bride permettant d'entourer l'outil et une position d'ouverture de la bride permettant de sortir l'outil de la bride. The fastening flange 6 comprises at least two articulated portions 61, 62 between them, in the manner of two jaws, between a closing position of the flange for surrounding the tool and an opening position of the flange allowing remove the tool from the flange.
Ladite bride est également équipée de moyens de serrage/desserrage de la bride permettant, à l'état fermé de la bride autour de l'outil de serrer/desserrer ladite bride autour de l'outil. Said flange is also equipped with clamping / loosening means of the flange allowing, in the closed state of the flange around the tool to tighten / loosen said flange around the tool.
Lesdits moyens de serrage/desserrage de la bride comprennent une tige 7 munie à une de ses extrémités d'une première pièce 50 de forme générale au moins partiellement sphérique, appelée boule 50, couplée à l'organe de liaison et à, ou au voisinage de, son autre extrémité d'une deuxième boule 70 munie d'un levier 8. Ladite deuxième boule 70 est montée pivotante sur la tige suivant un axe de pivotement 71 , formant axe de pivotement du levier, qui est décentré par rapport au centre de la deuxième boule 70. Le levier 8 est ainsi monté mobile entre une position dite levée dans laquelle les boules 50, 70 sont écartées les unes des autres suivant l'axe de la tige 7 et une position dite abaissée dans laquelle les boules 50, 70 sont rapprochées l'une de l'autre suivant l'axe de la tige 7. Ladite tige 7 présente un filetage destiné à coopérer avec un taraudage ménagé dans la boule 50 pour le couplage de la tige 7 à ladite boule 50. La tige 7 peut ainsi être fixée à la boule 50 en étant plus ou moins enfoncée dans ladite boule par vissage. Said tightening / loosening means of the flange comprise a rod 7 provided at one of its ends with a first part 50 of generally at least partially spherical shape, called ball 50, coupled to the connecting member and to or in the vicinity its other end of a second ball 70 provided with a lever 8. Said second ball 70 is pivotally mounted on the rod along a pivot axis 71, forming a pivot axis of the lever, which is off-center with respect to the center of the second ball 70. The lever 8 is thus mounted movably between a so-called raised position in which the balls 50, 70 are spaced apart from each other along the axis of the rod 7 and a so-called lowered position in which the balls 50, 70 are spaced apart from one another along the axis of the rod 7. Said rod 7 has a thread intended to cooperate with a tapped hole in the ball 50 for the coupling of the rod 7 to said ball 50. The rod 7 can be fix 50 to the ball being more or less embedded in said ball by screwing.
Chaque mâchoire 61 , 62 de la bride comprend, à l'extrémité libre de ladite mâchoire, une partie 67 destinée à former un logement au moins partiel pour l'une des boules 50, 70. En position fermée des mâchoires, lesdites mâchoires présentent une partie qui dél im ite une ouverture de passage destinée à recevoir la tige 7, ladite ouverture de passage débouche dans les parties de logement 67 des boules 50, 70. Lesdites parties de logement 67 sont conformées de telle sorte qu'en position de fermeture de la bride, la tige 7 peut être introduite dans l'ouverture de passage 63 de manière à positionner les boules 50, 70 situées aux extrémités de la tige 7 en regard de leur partie de logement 63 respective définie dans la bride. Puis la tige peut être vissée plus profondément dans la boule 50 par rotation de la tige à l'aide du levier 8 solidaire de la tige 7 par la boule 70 de manière à engager les boules 50, 70 dans les parties de logement 67 respectives de la bride. Ledit levier 8 peut alors être abaissé pour faire pivoter la boule 70 décentrée par rapport à la tige afin de rapprocher encore les boules 50, 70 entre elles en exerçant sur les parois des logements de boule un effort dans le sens d'un serrage des mâchoires l'une contre l'autre. Each jaw 61, 62 of the flange comprises, at the free end of said jaw, a portion 67 intended to form an at least partial housing for one of the balls 50, 70. In the closed position of the jaws, said jaws have a part which delimits a passage opening for receiving the rod 7, said passage opening opens into the housing portions 67 balls 50, 70. Said housing portions 67 are shaped such that in the closed position of the flange, the rod 7 can be introduced into the passage opening 63 so as to position the balls 50, 70 located at the ends of the rod 7 opposite their respective housing portion 63 defined in the flange. Then the rod can be screwed deeper into the ball 50 by rotation of the rod with the lever 8 secured to the rod 7 by the ball 70 so as to engage the balls 50, 70 in the respective housing portions 67 of the flange. Said lever 8 can then be lowered to pivot the ball 70 off-center relative to the rod to further bring the balls 50, 70 together by exerting on the walls of the ball housing a force in the direction of a clamping of the jaws one against the other.
La mâchoire 61 comprend une gorge de réception 68 du levier en position abaissée dudit levier 8. Le desserrage et l'ouverture de la bride s'effectuent en inversant les étapes décrites ci-dessous. En particulier, comme illustré à la figure 3, on relève le levier 8 à l'aide duquel on fait tourner la tige 7 dans le sens d'un dévissage pour écarter les boules 50, 70 entre elles afin de permettre l'ouverture de la bride comme illustré à la figure 3A. L'outil 10 peut alors être sorti de la bride 60 et l'ensemble formé de l'accessoire et de l'endoscope 3 peut être découplé de la bride 60 en sortant la tige 7 et les boules 50, 70 de leurs logements 63, 67 ménagés dans la bride 60. The jaw 61 comprises a receiving groove 68 of the lever in the lowered position of said lever 8. The loosening and opening of the flange is performed by reversing the steps described below. In particular, as illustrated in FIG. 3, the lever 8 is raised by means of which the rod 7 is rotated in the direction of unscrewing to move the balls 50, 70 away from each other in order to allow the opening of the flange as shown in Figure 3A. The tool 10 can then be taken out of the flange 60 and the assembly formed of the accessory and the endoscope 3 can be decoupled from the flange 60 by taking out the rod 7 and the balls 50, 70 from their housings 63, 67 formed in the flange 60.
A l'état fermé des mâchoires de la bride, ladite bride présente une paroi périphérique interne de forme générale tronconique, de telle sorte que la bride peut être montée sur une partie du corps de l'outil 1 0 de forme générale tronconique, en une position donnée le long dudit corps. Le montage de la bride peut s'effectuer de man ière répétable, sans avoir à se soucier de retrouver l'emplacement de positionnement de la bride le long du corps dudit outil, puisque la partie femelle tronconique formée par la paroi interne de la bride ne peut être appliquée sur la paroi périphérique externe tronconique du corps dudit outil qu'en une seule position le long de l'axe dudit outil. In the closed state of the jaws of the flange, said flange has an inner peripheral wall of generally frustoconical shape, so that the flange can be mounted on a part of the body of the tool 1 0 of generally frustoconical shape, in one given position along said body. The mounting of the flange can be performed in a repeatable manner, without having to worry about finding the position of positioning of the flange along the body of said tool, since the frustoconical female portion formed by the inner wall of the flange can be applied to the frustoconical outer peripheral wall of the body of said tool in only one position along the axis of said tool.
Pour la mobilité de pivotement de l'organe de liaison 5 par rapport au système de bride 6, on peut prévoir que la boule 50 qui forme une partie dudit organe de liaison soit montée pivotante par rapport à la partie de l'organe de liaison 5 qui est solidaire de l'enveloppe tubulaire 2 de l'accessoire. La mobilité de pivotement de l'organe de l iaison permet d'incl iner l'accessoire tout en conservant l'accessoire couplé audit outil 10 grâce à la bride 60 serrée sur le corps dudit outil 10. On peut également prévoir comme illustré à la figure 3, d'équiper la conduite d'amenée 200 de fluide de moyens de fixation 9, par exemple par clipsage, en différentes positions le long du corps de l'outil 10. For the pivoting mobility of the connecting member 5 with respect to the flange system 6, it can be provided that the ball 50 which forms a part of said connecting member is pivotally mounted relative to the part of the connecting member 5. which is secured to the tubular casing 2 of the accessory. Mobility of pivoting of the member of 1'aison allows to incl iner the accessory while retaining the accessory coupled to said tool 10 through the flange 60 clamped on the body of said tool 10. It can also be provided as illustrated in Figure 3, to equip the fluid supply line 200 with fastening means 9, for example by clipping, in different positions along the body of the tool 10.
La présente invention n'est nullement limitée aux modes de réalisation décrits et représentés, mais l'homme du métier saura y apporter toute variante conforme à son esprit. The present invention is not limited to the embodiments described and shown, but the skilled person will be able to make any variant within his mind.

Claims

REVENDICATIONS
1 . Accessoire de nettoyage pour système de vision (3), tel qu'endoscope, ledit système de vision étant du type formé d'un corps allongé (30) équipé à une extrémité d'une fenêtre de vision (31 ), 1. A vision system cleaning accessory (3), such as an endoscope, said vision system being of the type formed of an elongated body (30) equipped at one end with a viewing window (31),
led it accessoire comprenant une enveloppe tubulaire (2) à l'intérieur de laquelle est destinée à être introduite au moins la partie d'extrémité du corps allongé (30) du système de vision (3) munie de ladite fenêtre de vision (31 ), ledit accessoire comprenant également un emplacement de réception de la fenêtre de vision (31 ) du système de vision (3) et un passage (23) de fluide, tel que de l'air, led it accessory comprising a tubular envelope (2) inside which is intended to be introduced at least the end portion of the elongated body (30) of the vision system (3) provided with said viewing window (31) said accessory also comprising a location for receiving the viewing window (31) of the vision system (3) and a passage (23) for fluid, such as air,
caractérisé en ce que ledit accessoire comprend également au moins une tête (4) dite de nettoyage formant, seule ou en coopération avec l'enveloppe (2), au moins une partie dite d'accélération/dépression (400) comprenant un col de tuyère (40), situé dans le prolongement dud it passage (23) de fluide, et débouchant de ladite tête pour former un orifice d'éjection de fluide et, un conduit dit de dépression (41 ) s'étendant transversalement à l'axe du col de tuyère (40) et débouchant, d'une part, dans ledit col de tuyère (40) et, d'autre part, au niveau dudit emplacement de réception de la fenêtre de vision (31 ) du système de vision (3) de manière à créer une zone d'aspiration devant la fenêtre de vision (31 ). characterized in that said accessory also comprises at least one cleaning head (4) forming, alone or in cooperation with the casing (2), at least one so-called acceleration / depression portion (400) comprising a nozzle neck (40), located in the extension ofdd it fluid passage (23), and opening from said head to form a fluid ejection port and, a so-called vacuum duct (41) extending transversely to the axis of the fluid nozzle neck (40) and opening, on the one hand, into said nozzle neck (40) and, on the other hand, at said location for receiving the viewing window (31) of the vision system (3) so as to create a suction zone in front of the viewing window (31).
2. Accessoire selon la revendication 1 , caractérisé en ce que la ou chaque partie formant col de tuyère (40) débouche axialement hors de l'enveloppe tubulaire (2) de manière à générer un flux d'air à grande vitesse devant la fenêtre de vision (31 ) empêchant les détritus de venir sur la fenêtre de vision (31 ). 2. Accessory according to claim 1, characterized in that the or each nozzle neck portion (40) opens axially out of the tubular casing (2) so as to generate a flow of air at high speed in front of the window of vision (31) preventing detritus from coming on the viewing window (31).
3. Accessoire selon l'une des revendications précédentes, caractérisé en ce que ledit passage d'air (23) présente une forme en hélice d'axe confondu avec l'axe de l'enveloppe (2). 3. Accessory according to one of the preceding claims, characterized in that said air passage (23) has a helical shape axis coincides with the axis of the casing (2).
4. Accessoire selon l'une des revendications précédentes, caractérisé en ce que ladite tête de nettoyage (4) est formée par une pièce distincte de l'enveloppe (2). 4. Accessory according to one of the preceding claims, characterized in that said cleaning head (4) is formed by a separate part of the casing (2).
5. Accessoire selon l'une des revendications 1 à 3, caractérisé en ce que ladite tête de nettoyage (4) est formée d'une seule pièce avec l'enveloppe (2). 5. Accessory according to one of claims 1 to 3, characterized in that said cleaning head (4) is formed integrally with the casing (2).
6. Accessoire selon l'une des revendications précédentes, caractérisé en ce que ladite tête de nettoyage (4) comprend une partie (43) formant butée de limitation d'insertion dans ladite enveloppe (2) de l'extrémité du corps allongé (30) du système de vision (3) munie de ladite fenêtre de vision (31). 6. Accessory according to one of the preceding claims, characterized in that said cleaning head (4) comprises a portion (43) forming an insertion limit stop in said casing (2) of the end of the elongate body (30). ) of the vision system (3) provided with said viewing window (31).
7. Accessoire selon l'une des revendications précédentes, caractérisé en ce que ladite tête de nettoyage (4) étant un élément annulaire coaxial à l'axe de l'enveloppe (2), 7. Accessory according to one of the preceding claims, characterized in that said cleaning head (4) being an annular element coaxial with the axis of the casing (2),
ladite tête de nettoyage (4) comprend plusieurs parties d'accélération/dépression (400) formées chacune d'un col de tuyère (40) et d'un conduit de dépression (41) débouchant, d'une part, dans ledit col de tuyère (40) et, d'autre part, côté face intérieure de la tête de nettoyage (4) annulaire, lesdites parties d'accélération/dépression (400) étant réparties circonférentiellement autour de l'axe de la tête de nettoyage (4). said cleaning head (4) comprises a plurality of acceleration / depression portions (400) each formed of a nozzle neck (40) and a vacuum duct (41) opening on the one hand into said neck nozzle (40) and, on the other hand, inner side of the annular cleaning head (4), said acceleration / depression portions (400) being distributed circumferentially around the axis of the cleaning head (4) .
8. Accessoire selon la revendication 7, caractérisé en ce que lesdites parties d'accélération/dépression (400) sont écartées angulairement les unes des autres d'un même angle autour de l'axe de la tête de nettoyage (4) annulaire. 8. Accessory according to claim 7, characterized in that said acceleration / depression portions (400) are angularly spaced from each other at the same angle around the axis of the annular cleaning head (4).
9. Ensemble de nettoyage formé d'un accessoire de nettoyage, d'une bride (60) apte à entourer le corps d'un outil (10), tel qu'un outil de chirurgie dentaire, et des moyens de couplage de l'accessoire à la bride (60), 9. Cleaning assembly formed of a cleaning accessory, a flange (60) capable of surrounding the body of a tool (10), such as a dental surgery tool, and coupling means of the accessory to the flange (60),
caractérisé en ce que l'accessoire de nettoyage est conforme à l'une des revendications précédentes, characterized in that the cleaning accessory is in accordance with one of the preceding claims,
et en ce que lesdits moyens de couplage de l'accessoire à la bride (60) comportent une mobilité de pivotement de l'accessoire par rapport à la bride (60) autour d'un axe orthogonal à l'axe de l'enveloppe tubulaire (2) de l'accessoire. and in that said means for coupling the accessory to the flange (60) comprise pivotal mobility of the accessory relative to the flange (60) around an axis orthogonal to the axis of the tubular casing (2) of the accessory.
10. Ensemble de nettoyage selon la revendication 9, du type pour lequel le corps de l'outil (1 0) destiné à recevoir la bride (60) présente une partie de forme tronconique, caractérisé en ce que, à l'état fermé de la bride, la face interne de la bride est de forme tronconique. 10. Cleaning assembly according to claim 9, of the type for which the body of the tool (1 0) intended to receive the flange (60) has a portion of frustoconical shape, characterized in that, in the closed state of the flange, the inner face of the flange is of frustoconical shape.
1 1 . Ensemble de nettoyage selon la revendication 9 ou 10, caractérisé en ce que ledit ensemble comprend des moyens de serrage de la bride autour du corps de l'outil, formés d'une tige (7) munie à une extrémité d'une première pièce (50), de préférence une pièce au moins partiellement sphérique, équipée d'un levier (8), 1 1. Cleaning assembly according to claim 9 or 10, characterized in that said assembly comprises means for clamping the flange around the body of the tool, formed of a rod (7) provided at one end with a first piece ( 50), preferably an at least partially spherical part, equipped with a lever (8),
l'extrémité opposée de ladite tige (7) étant munie d'une deuxième pièce (70), de préférence une pièce au moins partiellement sphérique, ladite deuxième pièce (70) étant couplée à l'accessoire, the opposite end of said rod (7) being provided with a second piece (70), preferably an at least partially spherical piece, said second piece (70) being coupled to the accessory,
ladite première pièce (50) étant montée pivotante autour d'un axe orthogonal à l'axe de la tige (7) entre une position écartée de la deuxième pièce (70) et une position rapprochée de ladite deuxième pièce (70), suivant la direction axiale de la tige (7), said first piece (50) being pivotally mounted about an axis orthogonal to the axis of the rod (7) between a position spaced from the second piece (70) and a position close to said second piece (70), according to the axial direction of the rod (7),
et la bride (60) comprenant deux mâchoires (61 , 62) montées pivotantes l'une par rapport à l'autre entre une position fermée et une position ouverte, chaque mâchoire (61 , 62) comprenant une partie apte à former un logement (67) de réception au moins partiel d'une des première et deuxième pièces (50, 70), lesdites première et deuxième pièces (50, 70) et lesdits logements (67) étant configurés de tel le sorte que, à l'état positionné des première et deuxième pièces (50, 70) reliées entre elles par ladite tige (7), au niveau des parties de logement (67) de la bride (6), lesdites première et deuxième pièces (50, 70) exercent, en position rapprochée desdites première et deuxième pièces (50, 70), des efforts sur leur logement (67) dans le sens d'un serrage des mâchoires (61 , 62) de la bride (60) l'une contre l'autre. and the flange (60) comprising two jaws (61, 62) pivotally mounted relative to each other between a closed position and an open position, each jaw (61, 62) including a portion adapted to form a housing ( 67) at least partially receiving one of the first and second parts (50, 70), said first and second parts (50, 70) and said housings (67) being configured so that, in the positioned state first and second pieces (50, 70) interconnected by said rod (7), at the housing portions (67) of the flange (6), said first and second pieces (50, 70) exert, in position close to said first and second parts (50, 70), efforts on their housing (67) in the direction of clamping the jaws (61, 62) of the flange (60) against each other.
12. Ensemble de nettoyage selon la revendication 1 1 , caractérisé en ce que ladite deuxième pièce (70) est montée rotative par rapport à l'accessoire autour d'un axe parallèle à l'axe de ladite tige (7), de manière à former ladite mobilité de pivotement de l'accessoire par rapport à la bride (60). 12. cleaning assembly according to claim 1 1, characterized in that said second piece (70) is rotatably mounted relative to the accessory about an axis parallel to the axis of said rod (7), so as to forming said pivotal mobility of the accessory relative to the flange (60).
PCT/FR2011/051723 2010-07-26 2011-07-19 Cleaning accessory for a viewing system, and corresponding cleaning assembly WO2012013890A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11754892.5A EP2598017A1 (en) 2010-07-26 2011-07-19 Cleaning accessory for a viewing system, and corresponding cleaning assembly

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1056088A FR2962896B1 (en) 2010-07-26 2010-07-26 CLEANING ACCESSORY FOR VISION SYSTEM AND CORRESPONDING CLEANING ASSEMBLY
FR1056088 2010-07-26

Publications (1)

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WO2012013890A1 true WO2012013890A1 (en) 2012-02-02

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FR (1) FR2962896B1 (en)
WO (1) WO2012013890A1 (en)

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KR101439329B1 (en) * 2012-10-30 2014-09-11 주식회사 케이티 Wireless gateway and method for watching iptv broadcast

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US11712322B2 (en) * 2016-09-11 2023-08-01 Ppe-Az, Llc Housing assembly for periodontal endoscopic probe
FR3106268B1 (en) * 2020-01-17 2022-04-22 Axess Vision Tech Distal endoscope head with enlarged working channel

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WO2009055043A1 (en) 2007-10-26 2009-04-30 Harrel Stephen K Air shield for videoscope imagers
WO2009095915A1 (en) * 2008-01-29 2009-08-06 Jetprep Ltd. Distal Head Units for Endoscopes
EP2106739A2 (en) * 2008-04-04 2009-10-07 Olympus Medical Systems Corporation Endoscope, distal end cap-equipped endoscope and endoscope cleaning sheath
WO2009143201A1 (en) 2008-05-20 2009-11-26 Easyglide Ltd. Endoscopic device with fluid cleaning

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EP0664101A1 (en) * 1994-01-21 1995-07-26 Devmed Group Inc. Lens cleaning apparatus
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WO2006039511A2 (en) * 2004-09-30 2006-04-13 Boston Scientific Scimed, Inc. System and method of obstruction removal
WO2008041198A1 (en) * 2006-10-06 2008-04-10 Anthogyr Dental handpiece with abutment device
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WO2009055043A1 (en) 2007-10-26 2009-04-30 Harrel Stephen K Air shield for videoscope imagers
WO2009095915A1 (en) * 2008-01-29 2009-08-06 Jetprep Ltd. Distal Head Units for Endoscopes
EP2106739A2 (en) * 2008-04-04 2009-10-07 Olympus Medical Systems Corporation Endoscope, distal end cap-equipped endoscope and endoscope cleaning sheath
WO2009143201A1 (en) 2008-05-20 2009-11-26 Easyglide Ltd. Endoscopic device with fluid cleaning

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Publication number Priority date Publication date Assignee Title
KR101439329B1 (en) * 2012-10-30 2014-09-11 주식회사 케이티 Wireless gateway and method for watching iptv broadcast

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Publication number Publication date
EP2598017A1 (en) 2013-06-05
FR2962896B1 (en) 2012-08-03
FR2962896A1 (en) 2012-01-27

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