WO2003082123A2 - Medical instrument for holding open an intervention site and a method for producing the same - Google Patents

Medical instrument for holding open an intervention site and a method for producing the same Download PDF

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Publication number
WO2003082123A2
WO2003082123A2 PCT/EP2003/003008 EP0303008W WO03082123A2 WO 2003082123 A2 WO2003082123 A2 WO 2003082123A2 EP 0303008 W EP0303008 W EP 0303008W WO 03082123 A2 WO03082123 A2 WO 03082123A2
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WO
WIPO (PCT)
Prior art keywords
medical instrument
working part
instrument according
light
lighting device
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PCT/EP2003/003008
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German (de)
French (fr)
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WO2003082123A3 (en
Inventor
Imre Jordy
Original Assignee
Imre Jordy
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Publication date
Application filed by Imre Jordy filed Critical Imre Jordy
Priority to AU2003209747A priority Critical patent/AU2003209747A1/en
Publication of WO2003082123A2 publication Critical patent/WO2003082123A2/en
Publication of WO2003082123A3 publication Critical patent/WO2003082123A3/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
    • A61B17/0293—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors with ring member to support retractor elements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/30—Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure
    • A61B2090/306—Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure using optical fibres
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/30—Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure
    • A61B2090/309—Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure using white LEDs

Definitions

  • the invention relates to a medical instrument, such as a wound hook, brain spatula, muscle spreader, vaginal speculum and the like, with a working part engaging on the body of the patient to be operated on or examined to keep an intervention site open, the working part having a lighting device on the front for illuminating the intervention site ,
  • the invention further relates to a method for producing such an instrument.
  • Such instruments are known for example from the utility model DE 83 17 820 Ul and DE 89 02 631 Ul.
  • the exit surface of at least one light guide (plastic or glass fiber cable) integrated in the working part is used as the lighting device for illuminating the engagement point.
  • Laryngoscopes with a spatula designed as a working part and a handle part connected to the spatula are also known, in which a light bulb is arranged on the front side in the spatula as an illumination device.
  • the light bulb is connected via an electrical connection to a power source (battery) arranged in the handle part.
  • a disadvantage of these known medical instruments is, inter alia, that the light intensity of such light bulbs is relatively low and their use in medical instruments is generally not sufficient to keep an intervention site open for illuminating the intervention sites. If, on the other hand, light bulbs that generate a higher light intensity would be used, this inevitably leads to an impermissibly strong heating of the side of the working part facing the point of engagement and thus also of the tissue in the area of the point of engagement.
  • the invention is based on the object of specifying a medical instrument for keeping an intervention site open with a lighting device arranged on the front side, which ensures high light intensity and precise illumination of the intervention site without complex additional devices, without an inadmissibly high heating of the instrument occurring in the area of the intervention site.
  • a method for producing such an instrument is also to be specified.
  • the lighting device has proven to be particularly advantageous if a plurality of light-emitting diodes arranged in an array-like manner are used as the lighting device, each of which is connected via an electrically conductive connection to a continuously operating or a clocked current source.
  • the power source for example a rechargeable battery
  • the handle part connected to the working part.
  • the use of the medical instrument is not restricted by the outer contour of the light-emitting diodes, it has proven to be expedient if the light-emitting diodes are embedded in a translucent material (e.g. plastic) which is flush with the surface of the working part.
  • a translucent material e.g. plastic
  • the prefabricated lighting device e.g. several white LEDs soldered together
  • the prefabricated lighting device e.g. several white LEDs soldered together
  • the working part (and possibly also the handle part) is not made of metal but from a suitable plastic.
  • the prefabricated lighting device and the electrical connections (cables) connected to the lighting device are fixed to a heat-dissipating metal core and this arrangement is then embedded in plastic (ie, for example, in a appropriate shape, which is then cast with plastic). Further details and advantages of the invention result from the following exemplary embodiments explained with reference to figures. Show it:
  • Fig.l shows the longitudinal section through a first embodiment of a retractor blade according to the invention with a rectangular lighting array comprising a plurality of light-emitting diodes;
  • FIG. 2 shows a perspective view of the retractor blade shown in FIG. 1;
  • FIG. 3 shows the longitudinal section through a second embodiment of a retractor blade according to the invention
  • Figure 4 is a perspective view of the retractor blade shown in Figure 3;
  • FIG. 6 shows a speculum with a surgical site lighting consisting of a curved lighting array.
  • 1 and 2 denotes an L-shaped wound hook blade, which has a recess 3 at its front end 2.
  • a rectangular array 5 consisting of sixteen light-emitting diodes 4 is arranged in this recess 3.
  • the white light-emitting light-emitting diodes 4 are arranged in such a way that their light-emitting front surfaces, as seen in the spreading direction 6, are located on the back 7 of the wound hook blade 1 in order to illuminate the site of intervention when used as intended.
  • the light-emitting diode array 5 is embedded in a translucent plastic 8, which is flush with the back 7 of the wound hook sheet 1.
  • the light-emitting diodes 4 are connected via electrical connections 9 to a rechargeable current source (accumulator) 10, which is located in a handle part 11 indicated by dashed lines.
  • the electrical connections 9 run predominantly within the wound hook blade 1.
  • FIG. 3 and 4 show a further exemplary embodiment of a wound hook blade 12 according to the invention with an arc-shaped array 14 of white light-emitting diodes 15 arranged on the back 13.
  • FIG. 5 schematically shows three retractor blades 17-19 attached to a mechanical holding device 16, which are located in a predetermined intervention point 21 during the operation of a patient 20 indicated by dashed lines.
  • Arrays 22-24 of white light-emitting diodes are in turn located on the rear side of the wound hook blades 17-19 facing the engagement point 21, so that all light-emitting diodes together illuminate the engagement point 21 completely.
  • FIG. 6 shows a speculum 25 with two hold-open leaves 26, 27, at the front ends of which there is an arc-shaped array 28 of white light-emitting diodes for illuminating an intervention site.
  • Lighting device light emitting diode
  • Lighting device light emitting diode
  • Lighting device light emitting diode

Abstract

The invention relates to a medical instrument, such as a retractor, brain spatula, muscle separator, vaginal speculum or similar. Said instrument comprises a working section (1; 12; 17-19; 25) that engages with the body of the patient (20) having an operation or being examined, for holding open an intervention site (21), said working section (1; 12; 17-19; 25) comprising an illumination device on its front face (4; 15; 29) for illuminating the intervention site (21). The aim of the invention, is to provide a medical instrument that guarantees a high degree of light intensity and a precise illumination of the intervention site, without using complex auxiliary devices and without causing the instrument to be heated to an unacceptable level in the vicinity of the intervention site. To achieve this, the inventive illumination device (4; 15; 29) is a light-emitting diode, which generates at least white light and which is connected to a power source (10) located outside the working section (1; 12; 17-19; 25) via an electrically conductive connection (9) located at least partially inside the working section (1; 12; 17-19; 25).

Description

Medizinisches Instrument und Verfahren zu seiner Herstellung Medical instrument and process for its manufacture
Die Erfindung betrifft ein medizinisches Instrument, wie Wundhaken, Gehirnspatel, Mus- kelspreizer, Scheidenspekulum und dgl., mit einem am Körper des zu operierenden oder zu untersuchenden Patienten angreifenden Arbeitsteil zum Offenhalten einer Eingriffsstelle, wobei das Arbeitsteil vorderseitig eine Beleuchtungseinrichtung zur Beleuchtung der Eingriffsstelle aufweist. Die Erfindung bezieht sich ferner auf ein Verfahren zur Herstellung eines derartigen Instrumentes.The invention relates to a medical instrument, such as a wound hook, brain spatula, muscle spreader, vaginal speculum and the like, with a working part engaging on the body of the patient to be operated on or examined to keep an intervention site open, the working part having a lighting device on the front for illuminating the intervention site , The invention further relates to a method for producing such an instrument.
Derartige Instrumente sind beispielsweise aus den Gebrauchsmusterschriften DE 83 17 820 Ul und DE 89 02 631 Ul bekannt. Bei diesen bekannten Instrumenten wird als Beleuchtungseinrichtung zur Beleuchtung der Eingriffsstelle die Austrittsfläche mindestens eines in dem Arbeitsteil integrierten Lichtleiters (Kunststoff- oder Glasfaserkabels) verwendet.Such instruments are known for example from the utility model DE 83 17 820 Ul and DE 89 02 631 Ul. In these known instruments, the exit surface of at least one light guide (plastic or glass fiber cable) integrated in the working part is used as the lighting device for illuminating the engagement point.
Diese bekannten medizinischen Instrumente weisen unter anderem den Nachteil auf, daß relativ viel Licht beim Einkoppeln in den Lichtleiter verloren geht und daher starke Leuchtquellen in einem separaten Gehäuse verwendet werden müssen. Diese wiederum müssen gekühlt und mit entsprechend großen Stromquellen verbunden werden. Außerdem sind relativ lange Lichtleiter zwischen den Instrumenten und den die Leuchtquellen enthaltenden separaten Zusatzeinrichtungen erforderlich.These known medical instruments have the disadvantage, among other things, that a relatively large amount of light is lost when coupled into the light guide and therefore strong light sources have to be used in a separate housing. These in turn have to be cooled and connected to correspondingly large power sources. In addition, relatively long light guides between the instruments and the separate additional devices containing the light sources are required.
Es sind ferner Laryngoskope mit einem als Arbeitsteil ausgebildeten Spatel und einem mit dem Spatel verbundenen Griffteil bekannt, bei denen vorderseitig in dem Spatel als Beleuchtungseinrichtung eine Glühbirne angeordnet ist. Die Glühbirne ist über eine elektrische Verbindung mit einer in dem Griffteil angeordneten Stromquelle (Batterie) verbunden. Nachteilig bei diesen bekannten medizinischen Instrumenten ist unter anderem, daß die Lichtintensität derartiger Glühbirnen relativ gering ist und ihre Verwendung bei medizinischen Instrumenten zum Offenhalten einer Eingriffsstelle zur Beleuchtung der Eingriffsstellen in der Regel nicht ausreichen. Sofern hingegen Glühbirnen verwendet werden würden, die eine höhere Lichtintensität erzeugen, führt dieses zwangsläufig zu einer unzulässig starken Erwärmung des der Eingriffsstelle zugewandten Seite des Arbeitsteiles und damit auch des Gewebes im Bereich der Eingriffsstelle.Laryngoscopes with a spatula designed as a working part and a handle part connected to the spatula are also known, in which a light bulb is arranged on the front side in the spatula as an illumination device. The light bulb is connected via an electrical connection to a power source (battery) arranged in the handle part. A disadvantage of these known medical instruments is, inter alia, that the light intensity of such light bulbs is relatively low and their use in medical instruments is generally not sufficient to keep an intervention site open for illuminating the intervention sites. If, on the other hand, light bulbs that generate a higher light intensity would be used, this inevitably leads to an impermissibly strong heating of the side of the working part facing the point of engagement and thus also of the tissue in the area of the point of engagement.
Der Erfindung liegt die Aufgabe zugrunde, ein medizinisches Instrument zum Offenhalten einer Eingriffsstelle mit einer vorderseitig angeordneten Beleuchtungseinrichtung anzugeben, die ohne aufwendige Zusatzeinrichtungen eine hohe Lichtintensität und eine präzise Ausleuchtung der Eingriffsstelle sicherstellt, ohne daß eine unzulässig hohe Erwärmung des Instrumentes im Bereich der Eingriffsstelle auftritt. Ferner soll ein Verfahren zur Herstellung eines derartigen Instrumentes angegeben werden.The invention is based on the object of specifying a medical instrument for keeping an intervention site open with a lighting device arranged on the front side, which ensures high light intensity and precise illumination of the intervention site without complex additional devices, without an inadmissibly high heating of the instrument occurring in the area of the intervention site. A method for producing such an instrument is also to be specified.
Diese Aufgabe wird hinsichtlich des Instrumentes durch die Merkmale des Anspruchs 1 und hinsichtlich des Verfahrens durch die Merkmale des Anspruchs 8 gelöst.This object is achieved in terms of the instrument by the features of claim 1 and in terms of the method by the features of claim 8.
Weitere, besonders vorteilhafte Ausgestaltungen der Erfindung offenbaren die Unteransprüche.Further, particularly advantageous configurations of the invention are disclosed in the subclaims.
Die Erfindung beruht im wesentlichen auf dem Gedanken, als Beleuchtungseinrichtung nicht einen Lichtleiter oder eine Glühlampe, sondern mindestens eine weißes Licht aussendende (Hochleistungs-) Leuchtdiode (LED) zu verwenden, wobei sich insbesondere miniaturisierte in SMD-Technik (SMD= surface mounted device) hergestellte LEDs bewährt haben.The invention is essentially based on the idea of not using a light guide or an incandescent lamp as the lighting device, but rather at least one (high-performance) light-emitting diode (LED) which emits white light, miniaturized in particular using SMD technology (SMD = surface mounted device). manufactured LEDs have proven.
Als besonders vorteilhaft hat es sich erwiesen, wenn als Beleuchtungseinrichtung mehrere array artig angeordnete Leuchtdioden verwendet werden, die jeweils über eine elektrisch leitende Verbindung mit einer kontinuierlich arbeitenden oder einer getakteten Stromquelle verbunden sind. Bei einer vorteilhaften Ausführungsform der Erfindung befindet sich die Stromquelle (z.B. ein auf ladbarer Akkumulator) in einem mit dem Arbeitsteil verbundenen Griffteil.It has proven to be particularly advantageous if a plurality of light-emitting diodes arranged in an array-like manner are used as the lighting device, each of which is connected via an electrically conductive connection to a continuously operating or a clocked current source. In an advantageous embodiment of the invention, the power source (for example a rechargeable battery) is located in a handle part connected to the working part.
Damit die Verwendung des medizinischen Instrumentes durch die Außenkontur der Leuchtdioden nicht eingeschränkt wird, hat es sich als zweckmäßig erwiesen, wenn die Leuchtdioden in einem lichtdurchlässigen Material (z.B. Kunststoff) eingebettet sind, welches plan mit der Oberfläche des Arbeitsteiles abschließt.So that the use of the medical instrument is not restricted by the outer contour of the light-emitting diodes, it has proven to be expedient if the light-emitting diodes are embedded in a translucent material (e.g. plastic) which is flush with the surface of the working part.
Für die praktische Verwendung der erfindungsgemäßen Instrumente ist es von großer Bedeutung, daß zwischen der bis an die Oberfläche des jeweiligen Instrumentes geführten Beleuchtungseinrichtung und dem diese Einrichtung umgebenden Bereich des Arbeitsteiles keine spaltförmigen Öffnungen bestehen, weil anderenfalls bei Operationen immer Blut in diese spaltförmigen Öffnungen gelangt, was nur mit außerordentlich großem Aufwand wieder beseitigt werden kann.For the practical use of the instruments according to the invention, it is of great importance that there are no gap-shaped openings between the lighting device which is led to the surface of the respective instrument and the region of the working part surrounding this device, because otherwise blood always gets into these gap-shaped openings during operations, which can only be eliminated with an extremely great effort.
Insbesondere bei der Verwendung eines Arbeitsteiles aus Metall hat es sich daher als vorteilhaft erwiesen, die vorgefertigte Beleuchtungseinrichtung (z.B. mehrere miteinander verlötete weiße LEDs) in eine entsprechende Ausnehmung des Arbeitsteiles einzusetzen und die Ausnehmung dann mit einem geeigneten Kunststoff spaltfrei zu vergießen. Um eine gute randseitige Verbindung insbesondere bei Instrumenten mit einem aus Metall bestehenden Arbeitsteil zu erreichen, hat es sich als zweckmäßig erwiesen, vor dem Einbringen der LEDs in die zu vergießende Ausnehmung die Wände dieser Ausnehmung mit einem entsprechenden Kunststoff zu benetzen.In particular when using a metal work part, it has therefore proven to be advantageous to insert the prefabricated lighting device (e.g. several white LEDs soldered together) into a corresponding recess in the work part and then to cast the recess without a gap with a suitable plastic. In order to achieve a good edge connection, in particular in the case of instruments with a working part made of metal, it has proven to be expedient to wet the walls of this recess with a suitable plastic before inserting the LEDs into the recess to be cast.
Bei einer weiteren Ausführungsform der Erfindung besteht das Arbeitsteil (und gegebenenfalls auch das Griffteil) nicht aus Metall, sondern aus einem geeigneten Kunststoff. Zur Herstellung des erfindungsgemäßen Instrumentes hat es sich in diesem Fall als vorteilhaft erwiesen, wenn die vorgefertigte Beleuchtungseinrichtung sowie die mit der Beleuch- tungsvorrichtung verbundenen elektrischen Verbindungen (Kabel) an einem wärmeableitenden Metallkern fixiert werden und diese Anordnung dann in Kunststoff gebettet wird (d.h. z.B. in eine entsprechende Form gelegt, die mit Kunststoff dann vergossen wird). Weitere Einzelheiten und Vorteile der Erfindung ergeben sich aus den folgenden anhand von Figuren erläuterten Ausführungsbeispielen. Es zeigen:In a further embodiment of the invention, the working part (and possibly also the handle part) is not made of metal but from a suitable plastic. For the production of the instrument according to the invention, it has proven to be advantageous in this case if the prefabricated lighting device and the electrical connections (cables) connected to the lighting device are fixed to a heat-dissipating metal core and this arrangement is then embedded in plastic (ie, for example, in a appropriate shape, which is then cast with plastic). Further details and advantages of the invention result from the following exemplary embodiments explained with reference to figures. Show it:
Fig.l den Längsschnitt durch ein erstes Ausführungsbeispiel eines erfindungsgemäßen Wundhakenblattes mit einem mehrere Leuchtdioden umfassenden rechteck- förmigen Beleuchtungs-Array;Fig.l shows the longitudinal section through a first embodiment of a retractor blade according to the invention with a rectangular lighting array comprising a plurality of light-emitting diodes;
Fig.2 eine perspektivische Ansicht des in Fig.l dargestellten Wundhakenblattes;2 shows a perspective view of the retractor blade shown in FIG. 1;
Fig.3 den Längsschnitt durch ein zweites Ausführungsbeispiel eines erfindungsgemäßen Wundhakenblattes;3 shows the longitudinal section through a second embodiment of a retractor blade according to the invention;
Fig.4 eine perspektivische Ansicht des in Fig.3 dargestellten Wundhakenblattes;Figure 4 is a perspective view of the retractor blade shown in Figure 3;
Fig.5 die räumliche Anordnung von drei Wundhakenblättern mit Eingriffsstellenbeleuchtung für ein Rahmenspreizsystem und5 shows the spatial arrangement of three retractor blades with intervention site lighting for a frame expansion system and
Fig.6 ein Spekulum mit einer aus einem gebogenen Beleuchtungs-Array bestehenden Eingriffsstellenbeleuchtung.6 shows a speculum with a surgical site lighting consisting of a curved lighting array.
In den Fig.1 und 2 ist mit 1 ein L-förmig gebogenes Wundhakenblatt bezeichnet, welches an seinem vorderen Ende 2 eine Ausnehmung 3 aufweist. In dieser Ausnehmung 3 ist ein aus sechzehn Leuchtdioden 4 bestehendes, rechteckförmiges Array 5 angeordnet. Die weißes Licht emittierenden Leuchtdioden 4 sind dabei derart angeordnet, daß sich ihre lichtabstrahlenden Vorderflächen, in Spreizrichtung 6 gesehen, auf der Rückseite 7 des Wundhakenblattes 1 befinden, um bei ihrer bestimmungsgemäßen Verwendung die Eingriffsstelle zu beleuchten.1 and 2, 1 denotes an L-shaped wound hook blade, which has a recess 3 at its front end 2. A rectangular array 5 consisting of sixteen light-emitting diodes 4 is arranged in this recess 3. The white light-emitting light-emitting diodes 4 are arranged in such a way that their light-emitting front surfaces, as seen in the spreading direction 6, are located on the back 7 of the wound hook blade 1 in order to illuminate the site of intervention when used as intended.
Das Leuchtdioden-Array 5 ist in einem lichtdurchlässigen Kunststoff 8 eingebettet, welches plan mit der Rückseite 7 des Wundhakenblattes 1 abschließt. Die Leuchtdioden 4 sind über elektrische Verbindungen 9 mit einer aufladbaren Stromquelle (Akkumulator) 10 verbunden, die sich in einem gestrichelt angedeuteten Griffteil 11 befindet. Dabei verlaufen die elektrischen Verbindungen 9 vorwiegend innerhalb des Wundhakenblattes 1.The light-emitting diode array 5 is embedded in a translucent plastic 8, which is flush with the back 7 of the wound hook sheet 1. The light-emitting diodes 4 are connected via electrical connections 9 to a rechargeable current source (accumulator) 10, which is located in a handle part 11 indicated by dashed lines. The electrical connections 9 run predominantly within the wound hook blade 1.
Die Fig.3 und 4 zeigen ein weiteres Ausführungsbeispiel eines erfindungsgemäßen Wundhakenblattes 12 mit einem auf der Rückseite 13 angeordneten, bogenförmig ausgebildeten Array 14 aus weißen Leuchtdioden 15.3 and 4 show a further exemplary embodiment of a wound hook blade 12 according to the invention with an arc-shaped array 14 of white light-emitting diodes 15 arranged on the back 13.
In Fig.5 sind schematisch drei an einer mechanischen Haltevorrichtung 16 befestigte Wundhakenblätter 17-19 dargestellt, die sich bei der Operation eines gestrichelt angedeuteten Patienten 20 in einer vorgegebenen Eingriffsstelle 21 befinden. Auf der der Eingriffsstelle 21 zugewandten Rückseite der Wundhakenblätter 17-19 befinden sich wiederum Arrays 22-24 aus weißen Leuchtdioden, so daß alle Leuchtdioden zusammen die Eingriffsstelle 21 vollständig ausleuchten.5 schematically shows three retractor blades 17-19 attached to a mechanical holding device 16, which are located in a predetermined intervention point 21 during the operation of a patient 20 indicated by dashed lines. Arrays 22-24 of white light-emitting diodes are in turn located on the rear side of the wound hook blades 17-19 facing the engagement point 21, so that all light-emitting diodes together illuminate the engagement point 21 completely.
Fig. 6 schließlich gibt ein Spekulum 25 mit zwei Offenhalteblättern 26, 27 wieder, an deren vorderen Enden sich jeweils ein bogenförmig ausgebildetes Array 28 weißer Leuchtdiode zur Beleuchtung einer Eingriffsstelle befindet. 6 shows a speculum 25 with two hold-open leaves 26, 27, at the front ends of which there is an arc-shaped array 28 of white light-emitting diodes for illuminating an intervention site.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
Arbeitsteil, Wundhakenblatt vordere EndeWorking part, retractor blade front end
Ausnehmungrecess
Beleuchtungseinrichtung, LeuchtdiodeLighting device, light emitting diode
Array, Leuchtdioden- ArrayArray, LED array
Spreizrichtungthe spreading
Rückseiteback
Kunststoff, lichtdurchlässiges Material elektrische VerbindungPlastic, translucent material electrical connection
Stromquellepower source
Griffteilhandle part
Arbeitsteil, WundhakenblattWorking part, retractor blade
Rückseiteback
Arrayarray
Beleuchtungseinrichtung, LeuchtdiodeLighting device, light emitting diode
mechanische Haltevorrichtung -19 Arbeitsteile, Wundhakenblättermechanical holding device -19 working parts, retractor blades
Patientpatient
Eingriffsstelle -24 ArraysIntervention point -24 arrays
Arbeitsteil, Spekulum ,27 OffenhalteblätterWorking part, speculum, 27 open sheets
Arrayarray
Beleuchtungseinrichtung, Leuchtdiode Lighting device, light emitting diode

Claims

Ansprüche Expectations
1. Medizinisches Instrument, wie Wundhaken, Gehirnspatel, Muskelspreizer, Scheidenspekulum und dgl., mit einem am Körper des zu operierenden oder zu untersuchenden Patienten (20) angreifenden Arbeitsteil (1; 12; 17-19; 25) zum Offenhalten einer Eingriffsstelle (21), wobei das Arbeitsteil (1; 12; 17-19; 25) vorderseitig eine Beleuchtungseinrichtung (4; 15; 29) zur Beleuchtung der Eingriffsstelle (21) aufweist, dadurch gekennzeichnet, daß es sich bei der Beleuchtungseinrichtung (4; 15; 29) um mindestens eine weißes Licht erzeugende Leuchtdiode handelt, die über eine mindestens teilweise innerhalb des Arbeitsteiles (1; 12; 17-19; 25) angeordnete, elektrisch leitende Verbindung (9) mit einer außerhalb des Arbeitsteiles (1; 12; 17- 19; 25) befindlichen Stromquelle (10) verbunden ist.1.Medical instrument, such as a retractor, brain spatula, muscle spreader, vaginal speculum and the like, with a working part (1; 12; 17-19; 25) engaging on the body of the patient to be operated or examined (1; 12; 17-19; 25) to keep an intervention site open (21 ), wherein the working part (1; 12; 17-19; 25) has on the front an illumination device (4; 15; 29) for illuminating the engagement point (21), characterized in that it is located in the illumination device (4; 15; 29 ) is at least one white light-emitting diode which has an electrically conductive connection (9), which is arranged at least partially inside the working part (1; 12; 17-19; 25), with an outside of the working part (1; 12; 17-19 ; 25) current source (10) is connected.
2. Medizinisches Instrument nach Anspruch 1, dadurch gekennzeichnet, daß die Beleuchtungseinrichtung (4; 15; 29) sich aus mehreren arrayartig angeordneten, weißes Licht erzeugenden Leuchtdioden zusammensetzt.2. Medical instrument according to claim 1, characterized in that the lighting device (4; 15; 29) is composed of a plurality of light-emitting diodes arranged in the manner of an array.
3. Medizinisches Instrument nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Leuchtdiode(n) (4; 15; 29) in einem lichtdurchlässigen Material (8) eingebettet ist/sind, welches plan mit der Oberfläche des Arbeitsteiles (1; 12; 17-19; 25) abschließt.3. Medical instrument according to claim 1 or 2, characterized in that the light-emitting diode (s) (4; 15; 29) is / are embedded in a translucent material (8) which is flat with the surface of the working part (1; 12; 17-19; 25).
4. Medizinisches Instrument nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die arrayförmig angeordneten Leuchtdioden (4; 15; 29) sich, in Spreizrichtung (6) gesehen, auf der Rückseite (7; 13) des Arbeitsteiles (1; 12; 17-19; 25) befinden.4. Medical instrument according to one of claims 1 to 3, characterized in that the array-shaped light-emitting diodes (4; 15; 29), viewed in the spreading direction (6), on the back (7; 13) of the working part (1; 12 ; 17-19; 25).
5. Medizinisches Instrument nach einem der Ansprüche 1 bis 4, dadurch gekenn- zeichnet, daß das Arbeitsteil (17-19) an einer mechanischen Haltevorrichtung (16) befestigbar ist.5. Medical instrument according to one of claims 1 to 4, characterized records that the working part (17-19) can be attached to a mechanical holding device (16).
6. Medizinisches Instrument nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß es mehrere an einer mechanischen Haltevorrichtung (16) befestigte, räumlich getrennt angeordnete Arbeitsteile (17-19) mit integrierten weißen Leuchtdioden umfaßt, derart, daß die Leuchtdioden der Arbeitsteile (17-19) zusammen bei der bestimmungsgemäßen Verwendung des Instrumentes die Eingriffsstelle (21) vollständig ausleuchten.6. Medical instrument according to one of claims 1 to 5, characterized in that it comprises several on a mechanical holding device (16), spatially separated working parts (17-19) with integrated white LEDs, such that the LEDs of the working parts ( 17-19) fully illuminate the point of engagement (21) when the instrument is used as intended.
7. Medizinisches Instrument nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Arbeitsteil (1) mit einem Griffteil (11) verbindbar und die Stromquelle (10) in dem Griffteil (11) angeordnet ist.7. Medical instrument according to one of claims 1 to 4, characterized in that the working part (1) with a handle part (11) can be connected and the power source (10) is arranged in the handle part (11).
8. Medizinisches Instrument nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß das Arbeitsteil (1; 12; 17-19; 25) aus Metall oder Kunststoff besteht.8. Medical instrument according to one of claims 1 to 7, characterized in that the working part (1; 12; 17-19; 25) consists of metal or plastic.
9. Verfahren zur Herstellung eines medizinischen Instrumentes nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die vorgefertigte Beleuchtungseinrichtung in eine entsprechende Ausnehmung des Arbeitsteiles eingesetzt wird und daß diese Ausnehmung dann mit einem Kunststoff spaltfrei vergossen wird.9. A method for producing a medical instrument according to one of claims 1 to 8, characterized in that the prefabricated lighting device is inserted into a corresponding recess in the working part and that this recess is then cast without a gap with a plastic.
10. Verfahren nach Anspruch 9, dadurch gekennzeichnet, daß vor dem Einbringen der Beleuchtungseinrichtung in die zu vergießende Ausnehmung die Wände der Ausnehmung mit einem der Vergußmasse entsprechenden Kunststoff benetzt werden.10. The method according to claim 9, characterized in that before the introduction of the lighting device into the recess to be cast, the walls of the recess are wetted with a plastic corresponding to the sealing compound.
11. Verfahren zur Herstellung eines medizinischen Instrumentes nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die vorgefertigte Beleuchtungseinrichtung sowie die mit der Beleuchtungsvorrichtung verbundenen elektrischen Verbindungen an einem Metallkern fixiert werden und diese Anordnung dann in Kunststoff gebettet wird. 11. A method for producing a medical instrument according to one of claims 1 to 8, characterized in that the prefabricated lighting device and the electrical connections connected to the lighting device are fixed to a metal core and this arrangement is then embedded in plastic.
PCT/EP2003/003008 2002-03-28 2003-03-22 Medical instrument for holding open an intervention site and a method for producing the same WO2003082123A2 (en)

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DE10213919A1 (en) 2003-10-09

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