WO2002064192A1 - Laparoscopic gel applicator - Google Patents
Laparoscopic gel applicator Download PDFInfo
- Publication number
- WO2002064192A1 WO2002064192A1 PCT/GB2002/000521 GB0200521W WO02064192A1 WO 2002064192 A1 WO2002064192 A1 WO 2002064192A1 GB 0200521 W GB0200521 W GB 0200521W WO 02064192 A1 WO02064192 A1 WO 02064192A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- laparoscopic
- gel
- proximal
- apertures
- distal end
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
- A61M5/1452—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons
- A61M5/14526—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons the piston being actuated by fluid pressure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/00491—Surgical glue applicators
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M3/00—Medical syringes, e.g. enemata; Irrigators
- A61M3/02—Enemata; Irrigators
- A61M3/0279—Cannula; Nozzles; Tips; their connection means
Definitions
- This invention relates to apparatus for application of adhesion barrier gels or other liquid medical materials during laparoscopic surgery.
- the invention also relates to a method of application of such materials and to use of the apparatus for application of these materials.
- WO97/36622 discloses a laparoscopic gel applicator comprising an elongate instrument with a flexible delivery tube having a distal end with a nozzle. The nozzle may be flexed to dispense with a desired pattern into a spray head located in use within the abdominal cavity. A syringe may be used to push gel through the dispensing tube to the distal end thereof.
- Laparoscopic barrier fluid materials may be non-Newtonian viscous gels.
- a film of generally constant thickness should be dispensed into the body cavity to form a laminar sheet.
- a laparoscopic gel applicator comprises a reservoir for laparoscopic gel material, the reservoir being connected to a proximal end of an elongate tubular member, a dispensing head being connected to a distal end of the tubular member; a pump adapted to urge gel material from the reservoir through the tube to the head; the head including one or more apertures through which gel material may pass into a patient's body cavity in use; wherein said one or more apertures extend in an axial direction of the dispensing head between a proximal and distal end thereof to allow extrusion of a film of gel material through the said apertures between said proximal and distal ends in use, the said one or more apertures including respective regions of reduced cross-sectional area to act as flow restrictors in use, the reduction in cross-sectional area increasing from the proximal to the distal end.
- a dimension of the one or more apertures perpendicular to said axial direction increases from the proximal end to the distal end.
- An applicator in accordance with the present invention confers the advantage that the greater restriction on flow of the gel material at the proximal end of the aperture in relation to a lesser restriction at the distal end may be selected to compensate for the increased distance which the viscous gel must pass to reach the distal end.
- the flow of gel material from the apertures is more uniform providing a generally laminar extruded film in the body cavity.
- the aperture or axially extending array of apertures may be dimensioned to restrict flow of gel material, the restriction decreasing from the proximal to the distal end.
- the restriction may be achieved by decreasing the diameter of the aperture or a portion thereof.
- the length of the aperture from a central bore in the dispensing head may decrease from the proximal end to the distal end, thereby making flow easier at the distal end.
- the dispensing head is rotatable to facilitate control of the direction of application.
- the elongate tube may be flexible or rigid.
- the elongate tube may incorporate a portion formed from a shape memory alloy to provide a flexible conduit for the flow of gel material.
- Suitable shape memory alloys for use in the device of the invention include binary alloys, such as those in which the nickel content is at least about 50 wt.%, preferably at least about 50.5 wt.%.
- the nickel content will usefully be less than about 52 wt.%, preferably less than about 51 wt.%.
- the device can be formed from other Ni-Ti based alloys, including alloys with ternary and quaternary additions. Examples of elements that can be incorporated in the alloy include Fe, Co, Cr, Al, Cu and N. Added elements can be present in amounts up to about 10 wt.%, preferably up to about 5 wt.%.
- the drive member will be made from a tube of the alloy, by removing material by an operation which involves cutting, melting or vaporising the material. It is particularly preferred that the drive member by made by a laser cutting technique, but other cutting techniques might include stamping, cutting, and etching (especially photoetching).
- Known laser cutting techniques which can be used in this way include the use of a YAG laser.
- the pump may comprise a syringe driven either manually or mechanically, for example by compressed gas.
- peristaltic pump may be employed.
- Figure 1 illustrates a dispensing head of a laparoscopic gel applicator in accordance with this invention
- Figure 2 illustrates an alternative dispensing head
- Figure 3 illustrates a dispensing head
- FIG. 3 illustrates a syringe pump in accordance with this invention.
- FIG. 4 illustrates a manually driven pump in accordance with this invention.
- Figure 1 illustrates an electrically powered compressor 1 which serves to pump compressed air through a tube 2 to a syringe 3 containing a reservoir 5 for adhesion barrier gel material. Downward motion of the piston 3 drives the gel through outlet tube 4 to the dispensing head 5 shown in Figure 1.
- the dispensing head comprises a generally hollow cylindrical member 6 having an axially extending slot 7 through which the gel material 10 is extruded in use. The radial width of the aperture 7 increases from the proximal end 8 to the distal end 9 making flow of the viscous gel easier towards the distal end.
- the outlet tube 4 may have a portion formed from shape memory alloy to facilitate flexing of the dispensing head during use.
- the flexible portion is preferably located adjacent the dispensing head as shown in Figure 1.
- Figure 2 illustrates an alternative embodiment wherein an array of apertures 20 extend axially so that a continuous sheet of gel may be extruded from them.
- the diameter of the apertures increases from the distal to the proximal end.
- Figure 4 illustrates a manually driven pump having a pistol grip 30 arranged to drive a piston 31 within a syringe 32 to drive gel into an outlet tube 33 connected to the dispensing head (not shown).
- Figures 5 to 7 illustrate an alternative embodiment of the dispensing head shown in Figure 1.
- the hollow cylindrical member 40 connected to outlet tube 41 has an axially extending outward slot 42 communicating with a generally conical chamber 43 within the hollow member 40.
- the radial dimension of the chamber 43 increases from the proximal end 43a to the distal end 43b to ensure an even pressure of gel along the length of the outlet slot 42. This facilitates dispensing of a laminar sheet of the gel material.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0103330.7 | 2001-02-10 | ||
GBGB0103330.7A GB0103330D0 (en) | 2001-02-10 | 2001-02-10 | Laparoscopic gel applicator |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002064192A1 true WO2002064192A1 (en) | 2002-08-22 |
Family
ID=9908500
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2002/000521 WO2002064192A1 (en) | 2001-02-10 | 2002-02-08 | Laparoscopic gel applicator |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB0103330D0 (en) |
WO (1) | WO2002064192A1 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013048961A1 (en) * | 2011-09-30 | 2013-04-04 | Ethicon Endo-Surgery, Inc. | Devices for intra-abdominal cleaning of endoscopic devices, suction and irrigation |
US9597062B2 (en) | 2008-04-25 | 2017-03-21 | Mallinckrodt Pharma Ip Trading D.A.C. | Medical devices for delivering fluids during surgery and methods for their use |
US10004485B2 (en) | 2012-11-07 | 2018-06-26 | Surgical Innovations Limited | Surgical instrument for dispensing a fluid |
CN111803177A (en) * | 2020-07-07 | 2020-10-23 | 强莹 | A supplementary pull throughs for constipation treatment |
US10982068B2 (en) | 2008-02-26 | 2021-04-20 | Board Of Regents, The University Of Texas System | Dendritic macroporous hydrogels prepared by crystal templating |
US11058802B2 (en) | 2010-10-08 | 2021-07-13 | Board Of Regents, The University Of Texas System | Anti-adhesive barrier membrane using alginate and hyaluronic acid for biomedical applications |
US11246937B2 (en) | 2010-10-08 | 2022-02-15 | Board Of Regents, The University Of Texas System | One-step processing of hydrogels for mechanically robust and chemically desired features |
US11565027B2 (en) | 2012-12-11 | 2023-01-31 | Board Of Regents, The University Of Texas System | Hydrogel membrane for adhesion prevention |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3890977A (en) * | 1974-03-01 | 1975-06-24 | Bruce C Wilson | Kinetic memory electrodes, catheters and cannulae |
US4744786A (en) * | 1986-06-17 | 1988-05-17 | Cordis Corporation | Infusion pump |
US5125910A (en) * | 1991-02-19 | 1992-06-30 | Dexide, Inc. | Surgical endoscopic suction/irrigation cannula assembly |
US5383923A (en) * | 1990-10-20 | 1995-01-24 | Webster Laboratories, Inc. | Steerable catheter having puller wire with shape memory |
US5533986A (en) * | 1994-02-18 | 1996-07-09 | Merit Medical Systems, Inc. | Catheter apparatus with means for subcutaneous delivery of anesthetic agent or other fluid medicament |
US5735816A (en) * | 1996-07-23 | 1998-04-07 | Medtronic, Inc. | Spiral sheath retainer for autoperfusion dilatation catheter balloon |
US5766157A (en) * | 1995-03-17 | 1998-06-16 | Tilton, Jr.; Eugene B. | Instrumentation for surgical endoscopic insertion and application of liquid and gel material |
US6010495A (en) * | 1995-03-17 | 2000-01-04 | Tilton, Jr.; Eugene B. | Instrumentation for endoscopic surgical insertion and application of liquid, gel and like material |
-
2001
- 2001-02-10 GB GBGB0103330.7A patent/GB0103330D0/en not_active Ceased
-
2002
- 2002-02-08 WO PCT/GB2002/000521 patent/WO2002064192A1/en not_active Application Discontinuation
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3890977A (en) * | 1974-03-01 | 1975-06-24 | Bruce C Wilson | Kinetic memory electrodes, catheters and cannulae |
US4744786A (en) * | 1986-06-17 | 1988-05-17 | Cordis Corporation | Infusion pump |
US5383923A (en) * | 1990-10-20 | 1995-01-24 | Webster Laboratories, Inc. | Steerable catheter having puller wire with shape memory |
US5125910A (en) * | 1991-02-19 | 1992-06-30 | Dexide, Inc. | Surgical endoscopic suction/irrigation cannula assembly |
US5533986A (en) * | 1994-02-18 | 1996-07-09 | Merit Medical Systems, Inc. | Catheter apparatus with means for subcutaneous delivery of anesthetic agent or other fluid medicament |
US5766157A (en) * | 1995-03-17 | 1998-06-16 | Tilton, Jr.; Eugene B. | Instrumentation for surgical endoscopic insertion and application of liquid and gel material |
US6010495A (en) * | 1995-03-17 | 2000-01-04 | Tilton, Jr.; Eugene B. | Instrumentation for endoscopic surgical insertion and application of liquid, gel and like material |
US5735816A (en) * | 1996-07-23 | 1998-04-07 | Medtronic, Inc. | Spiral sheath retainer for autoperfusion dilatation catheter balloon |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10982068B2 (en) | 2008-02-26 | 2021-04-20 | Board Of Regents, The University Of Texas System | Dendritic macroporous hydrogels prepared by crystal templating |
US11760858B2 (en) | 2008-02-26 | 2023-09-19 | Board Of Regents, The University Of Texas System | Dendritic macroporous hydrogels prepared by crystal templating |
US9597062B2 (en) | 2008-04-25 | 2017-03-21 | Mallinckrodt Pharma Ip Trading D.A.C. | Medical devices for delivering fluids during surgery and methods for their use |
US11744926B2 (en) | 2010-10-08 | 2023-09-05 | Board Of Regents, The University Of Texas System | Anti-adhesive barrier membrane using alginate and hyaluronic acid for biomedical applications |
US11058802B2 (en) | 2010-10-08 | 2021-07-13 | Board Of Regents, The University Of Texas System | Anti-adhesive barrier membrane using alginate and hyaluronic acid for biomedical applications |
US11246937B2 (en) | 2010-10-08 | 2022-02-15 | Board Of Regents, The University Of Texas System | One-step processing of hydrogels for mechanically robust and chemically desired features |
US11857701B2 (en) | 2010-10-08 | 2024-01-02 | Board Of Regents, The University Of Texas System | Anti-adhesive barrier membrane using alginate and hyaluronic acid for biomedical applications |
US11890344B2 (en) | 2010-10-08 | 2024-02-06 | Board Of Regents, The University Of Texas System | One-step processing of hydrogels for mechanically robust and chemically desired features |
WO2013048961A1 (en) * | 2011-09-30 | 2013-04-04 | Ethicon Endo-Surgery, Inc. | Devices for intra-abdominal cleaning of endoscopic devices, suction and irrigation |
US8721529B2 (en) | 2011-09-30 | 2014-05-13 | Ethicon Endo-Surgery, Inc. | Devices and methods for providing suction and/or irrigation in a surgical procedure |
US10004485B2 (en) | 2012-11-07 | 2018-06-26 | Surgical Innovations Limited | Surgical instrument for dispensing a fluid |
US11565027B2 (en) | 2012-12-11 | 2023-01-31 | Board Of Regents, The University Of Texas System | Hydrogel membrane for adhesion prevention |
CN111803177A (en) * | 2020-07-07 | 2020-10-23 | 强莹 | A supplementary pull throughs for constipation treatment |
Also Published As
Publication number | Publication date |
---|---|
GB0103330D0 (en) | 2001-03-28 |
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