US20040064110A1 - Injection port - Google Patents

Injection port Download PDF

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Publication number
US20040064110A1
US20040064110A1 US10/260,533 US26053302A US2004064110A1 US 20040064110 A1 US20040064110 A1 US 20040064110A1 US 26053302 A US26053302 A US 26053302A US 2004064110 A1 US2004064110 A1 US 2004064110A1
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United States
Prior art keywords
membrane
injection port
layer
fluid
chamber
Prior art date
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Abandoned
Application number
US10/260,533
Inventor
Peter Forsell
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Potencia Medical AG
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Potencia Medical AG
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Filing date
Publication date
Application filed by Potencia Medical AG filed Critical Potencia Medical AG
Priority to US10/260,533 priority Critical patent/US20040064110A1/en
Assigned to POTENCIA MEDICAL AG reassignment POTENCIA MEDICAL AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FORSELL, PETER
Priority to AU2003267895A priority patent/AU2003267895A1/en
Priority to PCT/SE2003/001519 priority patent/WO2004030745A1/en
Priority to CN2003801008477A priority patent/CN1703256B/en
Priority to EP03751679A priority patent/EP1545691B1/en
Priority to PCT/SE2003/001531 priority patent/WO2004030746A1/en
Priority to AT03751679T priority patent/ATE497404T1/en
Priority to MXPA05002868A priority patent/MXPA05002868A/en
Priority to KR1020057005480A priority patent/KR101236767B1/en
Priority to DK03751679.6T priority patent/DK1545691T3/en
Priority to AU2003269754A priority patent/AU2003269754B2/en
Priority to CA002498042A priority patent/CA2498042A1/en
Priority to JP2004541382A priority patent/JP4733389B2/en
Priority to US10/530,015 priority patent/US7988616B2/en
Priority to DE60335956T priority patent/DE60335956D1/en
Priority to BRPI0314869A priority patent/BRPI0314869B8/en
Publication of US20040064110A1 publication Critical patent/US20040064110A1/en
Priority to HK06106040.1A priority patent/HK1085953A1/en
Priority to US13/194,202 priority patent/US8821371B2/en
Abandoned legal-status Critical Current

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/02Access sites
    • A61M39/0208Subcutaneous access sites for injecting or removing fluids
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/02Access sites
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142Pressure infusion, e.g. using pumps
    • A61M5/14244Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body
    • A61M5/14276Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body specially adapted for implantation
    • A61M5/1428Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body specially adapted for implantation with manual pumping action
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00Machines, pumps, or pumping installations having flexible working members
    • F04B43/0009Special features
    • F04B43/0054Special features particularities of the flexible members
    • F04B43/0063Special features particularities of the flexible members bell-shaped flexible members
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00Machines, pumps, or pumping installations having flexible working members
    • F04B43/02Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/04Pumps having electric drive
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/14Pumps characterised by muscle-power operation
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M2039/0036Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use characterised by a septum having particular features, e.g. having venting channels or being made from antimicrobial or self-lubricating elastomer
    • A61M2039/0054Multiple layers
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M2039/0036Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use characterised by a septum having particular features, e.g. having venting channels or being made from antimicrobial or self-lubricating elastomer
    • A61M2039/0072Means for increasing tightness of the septum, e.g. compression rings, special materials, special constructions
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142Pressure infusion, e.g. using pumps
    • A61M5/14244Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body
    • A61M5/14276Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body specially adapted for implantation

Definitions

  • the present invention relates to an injection port and an implantable pump for adding fluid to, or withdrawing fluid from, a surgical implant inside a human body.
  • the present invention also relates to surgical methods for treating diseases using the injection port and pump.
  • the injection port comprises a thick wall member of silicone mounted under tension to create a membrane through which it is possible to inject a specific type of needle for injecting hydraulic fluid into the interior of the port, without afterwards creating leakage through the membrane.
  • the needle has a lateral opening and does not cut out any remaining hole in the silicone membrane. It just moves the silicone aside.
  • the silicone membrane of traditional injection ports comprises a relatively hard (typically a hardness of about 60 Shore) and thick solid silicone. Since the thickness of the membrane normally is about 6 mm for a normal-sized injection port, it is difficult to find a proper location in the patient for subcutaneous implantation of the injection port.
  • traditional injection ports are not suited for hydraulically adjustable implants that need to be adjusted frequently, i.e., several times a day.
  • an injection port for adding fluid to, or withdrawing fluid from, a surgical implant inside a human body
  • the injection port comprising a rigid base member, and an injection membrane attached to the base member, the membrane and the base member defining a chamber for fluid, wherein the membrane includes a first layer and a second layer attached to each other, the first layer having better strength properties than the second layer and the second layer having better sealing properties than the first layer.
  • the thickness of the membrane may even be halved in comparison to the membrane used in prior injection ports.
  • the thickness of the membrane of the injection port of the present invention may be as small as about 3 mm.
  • the membrane is designed with a shorter diameter, it can be even thinner.
  • the injection port of the present invention can also be designed to be small and thin.
  • Another advantage obtained by the injection port of the present invention is that it also works as a small pump, which can be manually operated.
  • the membrane layers of the present invention may be made of silicone, wherein the first silicone layer is harder than the second silicone layer.
  • the second layer silicone suitably has a hardness less than 20 Shore.
  • the second layer is situated between the first layer and the chamber of the injection port.
  • the membrane may comprise a third layer harder than the second layer, wherein the third layer is situated between the second layer and the chamber.
  • the membrane is suitably displaceable, preferably manually, relative to the base member between a first position, in which the volume of the chamber is maximal, and a second position, in which the volume of the chamber is minimal.
  • the membrane is preferably elastic and may take the shape of a semi-sphere, when it is in the first position. Accordingly, when the membrane is displaced to the second position it is substantially flattened and in a state of tension.
  • the injection port may further comprise a locking device adapted to releaseably lock the membrane in the second position.
  • the membrane may be displaced from the first position to the second position by manually depressing the membrane.
  • the locking device can be adapted to release the membrane from the second position upon pushing the membrane, whereby the membrane resumes its semi-spherical shape in the first position.
  • an implantable pump for pumping fluid to and from a surgical implant inside a human body, comprising a rigid base member, and an injection membrane penetrable by an injection needle and attached to the base member, the membrane and the base member defining a chamber for fluid, wherein the membrane is displaceable relative the base member between a first position, in which the volume of the chamber is maximal, and a second position, in which the volume of the chamber is minimal, whereby the amount of fluid that is to be pumped between the chamber and the surgical implant can be calibrated by inserting an injection needle through the injection membrane and adding fluid to or withdrawing fluid from the chamber.
  • the injection membrane of the implantable pump may be designed as the membrane discussed above in connection with the injection port of the invention
  • a method for hydraulically operating a surgical implant implanted in a patient comprising: subcutaneously implanting in the patient an injection port having a displaceable injection membrane for changing the volume of a fluid chamber in the injection port; hydraulically connecting the injection port to the surgical implant; calibrating the amount of fluid in the fluid chamber of the injection port by penetrating the patient's skin and the membrane of the injection port with an injection needle and adding fluid to or withdrawing fluid from the fluid chamber; and from time to time, manually displacing the membrane of the subcutaneously implanted injection port, in order to distribute fluid between the fluid chamber of the injection port and the implant to operate the implant.
  • a surgical method for treating a patient having a disease comprising the steps of: insufflating the patient's abdomen with gas; placing at least two laparoscopical trocars in the human's body; inserting at least one dissecting tool through the trocars and dissecting a region of the patient; implanting an implant designed for treating reflux disease, urinary incontinence, impotence, anal incontinence or obesity, in the dissected area by using surgical instruments through the trocars; subcutaneously implanting in the patient an injection port having a displaceable injection membrane for changing the volume of a fluid chamber in the injection port; hydraulically connecting the injection port to the surgical implant; calibrating the amount of fluid in the fluid chamber of the injection port by penetrating the patient's skin and the membrane of the injection port with an injection needle and adding fluid to or withdrawing fluid from the fluid chamber; and from time to time, manually displacing the membrane of the subcutaneously implanted
  • the above described apparatuses and methods may also be designed for treating reflux disease, urine incontinence, impotence, anal incontinence or obesity or the like.
  • FIG. 1 shows an injection port according to the prior art.
  • FIG. 2 illustrates an injection port according to the present invention, where a needle has been injected through the membrane.
  • FIG. 3 shows the injection port of FIG. 2 working as a hand driven pump.
  • FIG. 4 shows the injection port of FIG. 2 working as a hand driven pump, where the membrane is in its lowest position.
  • FIG. 5 is a schematic view of an implantable hydraulic restriction device for use together with the injection port of the invention, designed for treating reflux disease, urine incontinence, anal incontinence or obesity.
  • FIG. 1 shows a traditional injection port 1 according to the prior art, which has a housing 2 mounted on a base 3 and a membrane 4 made of solid silicone covering an opening in housing 2 .
  • the silicone used to make membrane 4 has a hardness of 60 Shore or more.
  • the thickness of membrane 4 is normally about 6 mm for a normal-sized injection port.
  • FIG. 2 shows an injection port 10 according to the present invention, where a needle 12 of a syringe 14 has been injected through a membrane 16 attached to a rigid base member 18 of the injection port 10 .
  • membrane 16 has a semi-spherical shape in its initial, “non-depressed” position, as shown in FIG. 2.
  • membrane 16 is comprised of three layers attached to each other: a first hard layer 20 having preferably a hardness of more than 20 Shore; a second soft central layer 22 having a hardness of less than 20 Shore; and a third hard layer 24 , having a hardness suitably more than 20 Shore, but preferably about 60 Shore or more.
  • Membrane 16 and base member 18 define a chamber 25 for fluid.
  • membrane 16 comprises two layers, i.e., one first hard layer and one second soft layer between chamber 25 and first layer 20 .
  • First layer 20 has better strength properties than second layer 22
  • second layer 22 has better sealing properties than first layer 20 .
  • Membrane 16 's layers are suitably made of plastic or silicone, and preferably of silicone. Suitable silicon materials are manufactured by “Applied Silicone, Inc.”
  • FIGS. 3 and 4 show injection port 10 of FIG. 2 working as a hand driven pump.
  • membrane 16 that is very soft, i.e., elastic silicone material of less than 20 shore, it is possible to create a thinner and more elastic membrane that could be pumped by hand and still not cause leakage when a needle 12 of a syringe 14 penetrates the membrane.
  • FIG. 3 illustrates a finger 26 pushing (actuated by one push) membrane 16 in a direction 28 from above.
  • Membrane 16 will then be substantially flattened, such that the surface that is faced against the finger 26 will assume a somewhat concave bowl-shape 30 .
  • Membrane 16 is then moved to a lowest position, as shown in FIG.
  • FIG. 5 shows an example of an implantable hydraulic restriction device 41 comprising a band 40 formed into a loop around a patient's rectum (not shown), so that restriction device 41 may function as an artificial sphincter.
  • Band 40 includes a cavity 42 , which can be hydraulically connected to an injection port 10 of the invention.
  • injection port 10 hydraulic fluid may be supplied to band 40 to inflate cavity 42 , in order to close the rectum, and be withdrawn from the band 40 to deflate the cavity 42 , to open the rectum.
  • This type of restriction device when combined with injection port 10 of the present invention, may also be used as an artificial sphincter for treating patients suffering from heartburn and reflux disease or urinary incontinence.
  • Restriction device 41 may also be combined with injection port 10 for the purpose of forming an adjustable constricted stoma opening in the stomach or esophagus of an obese patient to treat obesity or for restricting the penile exit blood flow of an impotent patient.
  • displaceable injection membrane 16 is used to pump fluid in fluid chamber 25 to surgical implanted restriction device 41 , which is hydraulically connected to injection port 10 .
  • the amount of fluid in fluid chamber 25 capable of being pumped to restriction device 41 using injection port 10 is calibrated by penetrating the patient's skin and membrane 16 of injection port 10 with injection needle 12 of syringe 14 to add or withdraw fluid from chamber 25 .
  • Membrane 16 is manually displaced from time to time to pump the fluid from chamber 25 of injection port 10 to implant 41 to operate the implant.
  • an implant-like hydraulic restriction device 41 To insert in a patient an implant-like hydraulic restriction device 41 , the patient's abdomen is insufflated with gas, after which at least two laparoscopical trocars are placed in the patient's body. At least one dissecting tool is then inserted through the trocars to dissect a region of the patient to implant in the dissected area using surgical instruments through the trocars the particular implant that is designed for treating the particular disease to be treated.

Abstract

An injection port and implantable pump for adding fluid to, or withdrawing fluid from, a surgical implant inside a patient's body is disclosed. Also disclosed is a surgical method for treating diseases using the injection port and pump. The injection port and implantable pump includes a rigid base member and an injection membrane penetrable by an injection needle and attached to the base member. The membrane and base member define a chamber for holding fluid. The membrane is displaceable relative to the base member between a first position in which the volume of the fluid chamber is maximal and a second position, in which the volume of the chamber is minimal. According to the method, the membrane is manually displaced from time to time to distribute fluid between the fluid chamber of the injection port and the implant to operate the implant, which is typically a hydraulic restriction device. The implant can be designed for treating reflux disease, urinary incontinence, impotence, anal incontinence or obesity.

Description

    FIELD OF THE INVENTION
  • The present invention relates to an injection port and an implantable pump for adding fluid to, or withdrawing fluid from, a surgical implant inside a human body. The present invention also relates to surgical methods for treating diseases using the injection port and pump. [0001]
  • BACKGROUND
  • Traditional so called injection ports are used for post-operation adjustments of hydraulic implants. The injection port comprises a thick wall member of silicone mounted under tension to create a membrane through which it is possible to inject a specific type of needle for injecting hydraulic fluid into the interior of the port, without afterwards creating leakage through the membrane. The needle has a lateral opening and does not cut out any remaining hole in the silicone membrane. It just moves the silicone aside. The silicone membrane of traditional injection ports comprises a relatively hard (typically a hardness of about 60 Shore) and thick solid silicone. Since the thickness of the membrane normally is about 6 mm for a normal-sized injection port, it is difficult to find a proper location in the patient for subcutaneous implantation of the injection port. Besides, traditional injection ports are not suited for hydraulically adjustable implants that need to be adjusted frequently, i.e., several times a day. [0002]
  • SUMMARY OF THE INVENTION
  • An object of the present invention is to provide an injection port and an implantable pump, which are thinner and smaller than those of the prior art, and, therefore, more easily implanted subcutaneously. Another object of the present invention is to provide an injection port and an implantable pump, which are more versatile than those of the prior art. A further object of the present invention is to provide an injection port and an implantable pump that are easy and cheap to manufacture. Yet another object of the present invention is to provide surgical methods by using an injection port. [0003]
  • Accordingly, in accordance with a first aspect of the present invention, there is provided an injection port for adding fluid to, or withdrawing fluid from, a surgical implant inside a human body, the injection port comprising a rigid base member, and an injection membrane attached to the base member, the membrane and the base member defining a chamber for fluid, wherein the membrane includes a first layer and a second layer attached to each other, the first layer having better strength properties than the second layer and the second layer having better sealing properties than the first layer. [0004]
  • As a result, the thickness of the membrane may even be halved in comparison to the membrane used in prior injection ports. For example, the thickness of the membrane of the injection port of the present invention may be as small as about 3 mm. Furthermore, if the membrane is designed with a shorter diameter, it can be even thinner. Thus, since the thickness of the membrane can be substantially decreased in comparison to prior art, the injection port of the present invention can also be designed to be small and thin. [0005]
  • Another advantage obtained by the injection port of the present invention is that it also works as a small pump, which can be manually operated. [0006]
  • The membrane layers of the present invention may be made of silicone, wherein the first silicone layer is harder than the second silicone layer. The second layer silicone suitably has a hardness less than 20 Shore. Generally, the second layer is situated between the first layer and the chamber of the injection port. Alternatively, the membrane may comprise a third layer harder than the second layer, wherein the third layer is situated between the second layer and the chamber. [0007]
  • The membrane is suitably displaceable, preferably manually, relative to the base member between a first position, in which the volume of the chamber is maximal, and a second position, in which the volume of the chamber is minimal. The membrane is preferably elastic and may take the shape of a semi-sphere, when it is in the first position. Accordingly, when the membrane is displaced to the second position it is substantially flattened and in a state of tension. [0008]
  • The injection port may further comprise a locking device adapted to releaseably lock the membrane in the second position. Thus, the membrane may be displaced from the first position to the second position by manually depressing the membrane. Moreover, the locking device can be adapted to release the membrane from the second position upon pushing the membrane, whereby the membrane resumes its semi-spherical shape in the first position. [0009]
  • In accordance with a second aspect of the present invention, there is provided an implantable pump for pumping fluid to and from a surgical implant inside a human body, comprising a rigid base member, and an injection membrane penetrable by an injection needle and attached to the base member, the membrane and the base member defining a chamber for fluid, wherein the membrane is displaceable relative the base member between a first position, in which the volume of the chamber is maximal, and a second position, in which the volume of the chamber is minimal, whereby the amount of fluid that is to be pumped between the chamber and the surgical implant can be calibrated by inserting an injection needle through the injection membrane and adding fluid to or withdrawing fluid from the chamber. [0010]
  • The injection membrane of the implantable pump may be designed as the membrane discussed above in connection with the injection port of the invention [0011]
  • In accordance with a third aspect of the present invention, there is provided a method for hydraulically operating a surgical implant implanted in a patient, the method comprising: subcutaneously implanting in the patient an injection port having a displaceable injection membrane for changing the volume of a fluid chamber in the injection port; hydraulically connecting the injection port to the surgical implant; calibrating the amount of fluid in the fluid chamber of the injection port by penetrating the patient's skin and the membrane of the injection port with an injection needle and adding fluid to or withdrawing fluid from the fluid chamber; and from time to time, manually displacing the membrane of the subcutaneously implanted injection port, in order to distribute fluid between the fluid chamber of the injection port and the implant to operate the implant. [0012]
  • In accordance with a fourth aspect of the present invention, there is provided a surgical method for treating a patient having a disease, comprising the steps of: insufflating the patient's abdomen with gas; placing at least two laparoscopical trocars in the human's body; inserting at least one dissecting tool through the trocars and dissecting a region of the patient; implanting an implant designed for treating reflux disease, urinary incontinence, impotence, anal incontinence or obesity, in the dissected area by using surgical instruments through the trocars; subcutaneously implanting in the patient an injection port having a displaceable injection membrane for changing the volume of a fluid chamber in the injection port; hydraulically connecting the injection port to the surgical implant; calibrating the amount of fluid in the fluid chamber of the injection port by penetrating the patient's skin and the membrane of the injection port with an injection needle and adding fluid to or withdrawing fluid from the fluid chamber; and from time to time, manually displacing the membrane of the subcutaneously implanted injection port, in order to distribute fluid between the fluid chamber of the injection port and the implant to operate the implant. [0013]
  • The above described apparatuses and methods may also be designed for treating reflux disease, urine incontinence, impotence, anal incontinence or obesity or the like. [0014]
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • A preferred embodiment of the present invention will now be described by way of example, with reference to the attached drawings, by no way restricting the present invention thereto, wherein [0015]
  • FIG. 1 shows an injection port according to the prior art. [0016]
  • FIG. 2 illustrates an injection port according to the present invention, where a needle has been injected through the membrane. [0017]
  • FIG. 3 shows the injection port of FIG. 2 working as a hand driven pump. [0018]
  • FIG. 4 shows the injection port of FIG. 2 working as a hand driven pump, where the membrane is in its lowest position. [0019]
  • FIG. 5 is a schematic view of an implantable hydraulic restriction device for use together with the injection port of the invention, designed for treating reflux disease, urine incontinence, anal incontinence or obesity.[0020]
  • DETAILED DESCRIPTION OF THE INVENTION
  • FIG. 1 shows a traditional injection port [0021] 1 according to the prior art, which has a housing 2 mounted on a base 3 and a membrane 4 made of solid silicone covering an opening in housing 2. Typically, the silicone used to make membrane 4 has a hardness of 60 Shore or more. The thickness of membrane 4 is normally about 6 mm for a normal-sized injection port.
  • FIG. 2 shows an [0022] injection port 10 according to the present invention, where a needle 12 of a syringe 14 has been injected through a membrane 16 attached to a rigid base member 18 of the injection port 10. According to the embodiment shown in FIG. 2, membrane 16 has a semi-spherical shape in its initial, “non-depressed” position, as shown in FIG. 2. In the embodiment shown in FIGS. 2-4, membrane 16 is comprised of three layers attached to each other: a first hard layer 20 having preferably a hardness of more than 20 Shore; a second soft central layer 22 having a hardness of less than 20 Shore; and a third hard layer 24, having a hardness suitably more than 20 Shore, but preferably about 60 Shore or more. Membrane 16 and base member 18 define a chamber 25 for fluid. However, in the most general embodiment of the injection port of the present invention, it is sufficient if membrane 16 comprises two layers, i.e., one first hard layer and one second soft layer between chamber 25 and first layer 20. First layer 20 has better strength properties than second layer 22, and second layer 22 has better sealing properties than first layer 20. Membrane 16's layers are suitably made of plastic or silicone, and preferably of silicone. Suitable silicon materials are manufactured by “Applied Silicone, Inc.”
  • FIGS. 3 and 4 [0023] show injection port 10 of FIG. 2 working as a hand driven pump. By using a core for membrane 16 that is very soft, i.e., elastic silicone material of less than 20 shore, it is possible to create a thinner and more elastic membrane that could be pumped by hand and still not cause leakage when a needle 12 of a syringe 14 penetrates the membrane. FIG. 3 illustrates a finger 26 pushing (actuated by one push) membrane 16 in a direction 28 from above. Membrane 16 will then be substantially flattened, such that the surface that is faced against the finger 26 will assume a somewhat concave bowl-shape 30. Membrane 16 is then moved to a lowest position, as shown in FIG. 4, where it is held by a locking device 32 until it is manually pressed again. When membrane 16 is actuated again, by a second push by the finger 26, the locking device 32 (which functions similar to the locking mechanism for a ballpoint pen) releases membrane 16, whereby membrane 16 is able to return to its regular convex-shaped condition as shown in FIG. 2.
  • FIG. 5 shows an example of an implantable [0024] hydraulic restriction device 41 comprising a band 40 formed into a loop around a patient's rectum (not shown), so that restriction device 41 may function as an artificial sphincter. Band 40 includes a cavity 42, which can be hydraulically connected to an injection port 10 of the invention. By using injection port 10, hydraulic fluid may be supplied to band 40 to inflate cavity 42, in order to close the rectum, and be withdrawn from the band 40 to deflate the cavity 42, to open the rectum. This type of restriction device, when combined with injection port 10 of the present invention, may also be used as an artificial sphincter for treating patients suffering from heartburn and reflux disease or urinary incontinence. Restriction device 41 may also be combined with injection port 10 for the purpose of forming an adjustable constricted stoma opening in the stomach or esophagus of an obese patient to treat obesity or for restricting the penile exit blood flow of an impotent patient.
  • According to the method of using [0025] injection port 10 to treat various diseases, after injection port 10 is subcutaneously implanted in the patient, displaceable injection membrane 16 is used to pump fluid in fluid chamber 25 to surgical implanted restriction device 41, which is hydraulically connected to injection port 10. The amount of fluid in fluid chamber 25 capable of being pumped to restriction device 41 using injection port 10 is calibrated by penetrating the patient's skin and membrane 16 of injection port 10 with injection needle 12 of syringe 14 to add or withdraw fluid from chamber 25. Membrane 16 is manually displaced from time to time to pump the fluid from chamber 25 of injection port 10 to implant 41 to operate the implant.
  • To insert in a patient an implant-like [0026] hydraulic restriction device 41, the patient's abdomen is insufflated with gas, after which at least two laparoscopical trocars are placed in the patient's body. At least one dissecting tool is then inserted through the trocars to dissect a region of the patient to implant in the dissected area using surgical instruments through the trocars the particular implant that is designed for treating the particular disease to be treated.
  • Although the present invention has been described in terms of a particular embodiment and process, it is not intended that the invention be limited to that embodiment. Modifications of the embodiment and process within the spirit of the invention will be apparent to those skilled in the art. The scope of the invention is defined by the claims that follow. [0027]

Claims (26)

What is claimed is:
1. An injection port for adding fluid to or withdrawing fluid from a surgical implant inside a human body, the injection port comprising a rigid base member, and an injection membrane attached to said base member, said membrane and said base member defining a chamber for fluid, wherein said membrane includes a first layer and a second layer attached to each other, said first layer having better strength properties than said second layer and said second layer having better sealing properties than said first layer.
2. An injection port according to claim 1, wherein said first layer is harder than said second layer.
3. An injection port according to claim 2, wherein said second layer is situated between said first layer and said chamber.
4. An injection port according to claim 3, wherein said membrane comprises a third layer harder than said second layer, said third layer being situated between said second layer and said chamber.
5. An injection port according to claim 2, wherein said second layer is made of silicone having a hardness of less than 20 Shore.
6. An injection port according to claim 1, wherein said membrane is displaceable relative to said base member between a first position, in which a volume of said chamber is maximal, and a second position, in which the volume of said chamber is minimal.
7. An injection port according to claim 6, wherein said membrane is manually displaceable between said first and second positions.
8. An injection port according to claim 6, further comprising a locking device adapted to releaseably lock said membrane in said second position.
9. An injection port according to claim 6, wherein said membrane is elastic and takes the shape of a semi-sphere, when it is in said first position.
10. An injection port according to claim 9, wherein said membrane is substantially flattened, when it is in said second position.
11. An injection port according to claim 10, further comprising a locking device adapted to releaseably lock said membrane in said second position, when said membrane is pushed from said first position to said second position.
12. An injection port according to claim 11, wherein said a locking device is adapted to release said membrane from said second position upon pushing said membrane, whereby said membrane resumes its semi-spherical shape in said first position.
13. An implantable pump for pumping fluid to and from a surgical implant inside a human body, comprising a rigid base member, and an injection membrane penetrable by an injection needle and attached to said base member, said membrane and said base member defining a chamber for fluid, wherein said membrane is displaceable relative said base member between a first position, in which the volume of said chamber is maximal, and a second position, in which the volume of said chamber is minimal, whereby the amount of fluid that is to be pumped between said chamber and the surgical implant can be calibrated by inserting an injection needle through said injection membrane and adding fluid to or withdrawing fluid from said chamber.
14. An implantable pump according to claim 13, wherein said membrane is manually displaceable between said first and second positions.
15. An implantable pump according to claim 13, further comprising a locking device adapted to releaseably lock said membrane in said second position.
16. An implantable pump according to claim 13, wherein said membrane is elastic and takes the shape of a semi-sphere, when it is in said first position.
17. An implantable pump according to claim 16, wherein said membrane is substantially flattened, when it is in said second position.
18. An implantable pump according to claim 17, further comprising a locking device adapted to releaseably lock said membrane in said second position, when said membrane is pushed from said first position to said second position.
19. An implantable pump according to claim 18, wherein said locking device is adapted to release said membrane from said second position upon pushing said membrane, whereby said membrane resumes its semi-spherical shape in said first position.
20. An implantable pump according to claim 13, wherein said membrane includes a first layer and a second layer attached to each other, said first layer having better strength properties than said second layer and said second layer having better sealing properties than said first layer.
21. An implantable pump according to claim 20, wherein said first layer is harder than said second layer.
22. An implantable pump according to claim 21, wherein said second layer is situated between said first layer and said chamber.
23. An implantable pump according to claim 22, wherein said membrane comprises a third layer that is harder than said second layer, said third layer being situated between said second layer and said chamber.
24. An implantable pump according to claim 21, wherein said second layer is made of silicone having a hardness of less than 20 Shore.
25. A method for hydraulically operating a surgical implant implanted in a patient, the method comprising:
subcutaneously implanting in the patient an injection port having a displaceable injection membrane for changing the volume of a fluid chamber in the injection port;
hydraulically connecting the injection port to the surgical implant;
calibrating the amount of fluid in the fluid chamber of the injection port by penetrating the patient's skin and the membrane of the injection port with an injection needle and adding fluid to or withdrawing fluid from the fluid chamber; and
from time to time, manually displacing the membrane of the subcutaneously implanted injection port, in order to distribute fluid between the fluid chamber of the injection port and the implant to operate the implant.
26. A surgical method for treating a patient having a disease, comprising the steps of:
insufflating the patient's abdomen with gas;
placing at least two laparoscopical trocars in the human's body;
inserting at least one dissecting tool through the trocars and dissecting a region of the patient; implanting an implant designed for treating reflux disease, urinary incontinence, impotence, anal incontinence or obesity, in the dissected area by using surgical instruments through the trocars;
subcutaneously implanting in the patient an injection port having a displaceable injection membrane for changing the volume of a fluid chamber in the injection port;
hydraulically connecting the injection port to the surgical implant;
calibrating the amount of fluid in the fluid chamber of the injection port by penetrating the patient's skin and the membrane of the injection port with an injection needle and adding fluid to or withdrawing fluid from the fluid chamber; and
from time to time, manually displacing the membrane of the subcutaneously implanted injection port, in order to distribute fluid between the fluid chamber of the injection port and the implant to operate the implant.
US10/260,533 2002-10-01 2002-10-01 Injection port Abandoned US20040064110A1 (en)

Priority Applications (18)

Application Number Priority Date Filing Date Title
US10/260,533 US20040064110A1 (en) 2002-10-01 2002-10-01 Injection port
AU2003267895A AU2003267895A1 (en) 2002-10-01 2003-09-30 Injection port
PCT/SE2003/001519 WO2004030745A1 (en) 2002-10-01 2003-09-30 Injection port
BRPI0314869A BRPI0314869B8 (en) 2002-10-01 2003-10-01 implantable pump for hydraulic implant operation
KR1020057005480A KR101236767B1 (en) 2002-10-01 2003-10-01 An apparatus for treating a disease
JP2004541382A JP4733389B2 (en) 2002-10-01 2003-10-01 Implantable pump that operates hydraulic implants
PCT/SE2003/001531 WO2004030746A1 (en) 2002-10-01 2003-10-01 Implantable pump for operation of hydraulic implant
AT03751679T ATE497404T1 (en) 2002-10-01 2003-10-01 IMPLANTABLE PUMP FOR OPERATING A HYDRAULIC IMPLANT
MXPA05002868A MXPA05002868A (en) 2002-10-01 2003-10-01 Implantable pump for operation of hydraulic implant.
CN2003801008477A CN1703256B (en) 2002-10-01 2003-10-01 Implantable pump for operation of hydraulic implant
DK03751679.6T DK1545691T3 (en) 2002-10-01 2003-10-01 Implantable pump for hydraulic implant operation
AU2003269754A AU2003269754B2 (en) 2002-10-01 2003-10-01 Implantable pump for operation of hydraulic implant
CA002498042A CA2498042A1 (en) 2002-10-01 2003-10-01 Implantable pump for operation of hydraulic implant
EP03751679A EP1545691B1 (en) 2002-10-01 2003-10-01 Implantable pump for operation of hydraulic implant
US10/530,015 US7988616B2 (en) 2002-10-01 2003-10-01 Implantable pump for operation of hydraulic implant
DE60335956T DE60335956D1 (en) 2002-10-01 2003-10-01 IMPLANTABLE PUMP FOR OPERATING A HYDRAULIC IMPLANT
HK06106040.1A HK1085953A1 (en) 2002-10-01 2006-05-25 Implantable pump for operation of hydraulic implant
US13/194,202 US8821371B2 (en) 2002-10-01 2011-07-29 Implantable pump for operation of hydraulic implant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/260,533 US20040064110A1 (en) 2002-10-01 2002-10-01 Injection port

Related Child Applications (3)

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PCT/SE2003/001531 Continuation-In-Part WO2004030746A1 (en) 2002-10-01 2003-10-01 Implantable pump for operation of hydraulic implant
US10530015 Continuation-In-Part 2003-10-01
US10/530,015 Continuation-In-Part US7988616B2 (en) 2002-10-01 2003-10-01 Implantable pump for operation of hydraulic implant

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US20040064110A1 true US20040064110A1 (en) 2004-04-01

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US10/260,533 Abandoned US20040064110A1 (en) 2002-10-01 2002-10-01 Injection port
US10/530,015 Active 2026-07-09 US7988616B2 (en) 2002-10-01 2003-10-01 Implantable pump for operation of hydraulic implant
US13/194,202 Expired - Lifetime US8821371B2 (en) 2002-10-01 2011-07-29 Implantable pump for operation of hydraulic implant

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US10/530,015 Active 2026-07-09 US7988616B2 (en) 2002-10-01 2003-10-01 Implantable pump for operation of hydraulic implant
US13/194,202 Expired - Lifetime US8821371B2 (en) 2002-10-01 2011-07-29 Implantable pump for operation of hydraulic implant

Country Status (14)

Country Link
US (3) US20040064110A1 (en)
EP (1) EP1545691B1 (en)
JP (1) JP4733389B2 (en)
KR (1) KR101236767B1 (en)
CN (1) CN1703256B (en)
AT (1) ATE497404T1 (en)
AU (2) AU2003267895A1 (en)
BR (1) BRPI0314869B8 (en)
CA (1) CA2498042A1 (en)
DE (1) DE60335956D1 (en)
DK (1) DK1545691T3 (en)
HK (1) HK1085953A1 (en)
MX (1) MXPA05002868A (en)
WO (2) WO2004030745A1 (en)

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