CA2472362A1 - Surgical access device with floating gel seal - Google Patents

Surgical access device with floating gel seal Download PDF

Info

Publication number
CA2472362A1
CA2472362A1 CA002472362A CA2472362A CA2472362A1 CA 2472362 A1 CA2472362 A1 CA 2472362A1 CA 002472362 A CA002472362 A CA 002472362A CA 2472362 A CA2472362 A CA 2472362A CA 2472362 A1 CA2472362 A1 CA 2472362A1
Authority
CA
Canada
Prior art keywords
housing
trocar
axis
valve
seal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002472362A
Other languages
French (fr)
Other versions
CA2472362C (en
Inventor
John R. Brustad
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Applied Medical Resources Corp
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2472362A1 publication Critical patent/CA2472362A1/en
Application granted granted Critical
Publication of CA2472362C publication Critical patent/CA2472362C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3498—Valves therefor, e.g. flapper valves, slide valves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3462—Trocars; Puncturing needles with means for changing the diameter or the orientation of the entrance port of the cannula, e.g. for use with different-sized instruments, reduction ports, adapter seals
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3415—Trocars; Puncturing needles for introducing tubes or catheters, e.g. gastrostomy tubes, drain catheters

Abstract

A trocar (18) is provided with a cannula (21) and a housing (23) and valve assembly (50) disposed in the housing (23) which forms a housing seal, and instrument seal, and in some cases a zero seal (58). A gel material (54) is included in the valve and provides the valve with superior flotation properties for maintaining the instrument seal even when the instrument is moved off-axis. In order to accommodate movement of the gel material (54), voids can be formed within the valve housing (23) and even within the gel material (54).

Claims (17)

1. A trocar having access and being adapted to provide access for a surgical instrument across a body wall and into a body cavity, comprising:
a cannula disposed along the axis and having a proximal end and a distal end, the cannula being adapted for disposition across the body wall;
a housing disposed along the axis at the proximal end of the cannula, the housing having a housing wall adapted to receive the surgical instrument generally along the axis and to introduce the surgical instrument into the cannula;
a valve disposed in the housing and having properties for forming a first seal with the housing wall and a second seal with the surgical instrument when the surgical instrument is present in the trocar and a third seal when the surgical instrument is absent from the trocar;
a gel material inserted in the valve and having floating properties for maintaining the second seal even when the surgical instrument is moved laterally of the axis of the trocar.
2. The trocar recited in Claim 1 wherein the gel material of the valve has a maximum outer dimension measured laterally of the axis and a thickness measured along the axis, the ratio of the maximum outer dimensions to the thickness being in a range between one and five.
3. The trocar recited in Claim 2, wherein the thickness is in a range between about five to ten millimeters.
4. The trocar recited in Claim 1, further comprising:
means defining at least one cavity adjacent the gel material, the cavity providing a void into which the gel material can move.
5. The trocar recited in Claim 4, wherein the cavity defining means includes a portion of the housing wall.
6. The trocar recited in Claim 4, wherein the cavity defining means includes a portion of the gel material.
7. A trocar having an axis and being adapted to provide access for a surgical instrument across a body wall and into a body cavity, comprising:
a cannula disposed along the axis and having a proximal end and a distal end, the cannula being adapted for disposition across the body wall;
a housing disposed along the axis at the proximal end of the cannula, the housing having a housing wall adapted to receive the surgical instrument generally along the axis and to introduce the surgical instrument into the cannula;
a septum valve disposed in the valve housing and adapted to form a first seal with the instrument when the instrument is received into the trocar;
a valve support disposed between the septum valve and the housing to float the septum valve relative to the housing, the valve support including a gel material having elongation greater than 1000 percent to facilitate maintenance of the first seal during off-axis movement of the instrument relative to the housing.
8. The trocar recited in Claim 7, wherein the valve support forms a second seal with the housing wall.
9. The trocar recited in Claim 8, wherein the housing includes:
a first wall disposed generally parallel to the axis of the trocar; and a second wall disposed generally perpendicular to the axis of the trocar.
10. The trocar recited in Claim 9, wherein the valve support forms the second seal with the first walls of the housing.
11. The trocar recited in Claim 9, wherein the valve support forms the second seal with the second walls of the housing.
12. The trocar recited in Claim 7, wherein the septum valve is insert molded to the valve support.
13. A trocar having an axis and being adapted to provide access for a surgical instrument across a body wall and into a body cavity, comprising:
a cannula having a tubular configuration and extending between a proximal end and a distal end;
a valve housing disposed at the proximal end of the cannula;
a valve disposed in the valve housing along the axis, the valve being adapted to form a seal with the instrument when the instrument is inserted through the valve housing and into the cannula; and portions of the valve including a gel material having properties for moving relative to the axis to maintain the seal with the instrument when the instrument is moved off of the axis.
14. The trocar recited in Claim 13, wherein the properties of the gel material include an elongation of 1000 percent.
15. The trocar recited in Claim 13, further comprising:
means defining a void in proximity to the gel material to facilitate movement of the gel material relative to the axis.
16. The trocar recited in Claim 15, wherein the void defining means includes portions of the seal housing.
17. The trocar recited in Claim 15, wherein the void defining means includes portions of the gel material in the form of air pockets within the gel material.
CA002472362A 2002-01-24 2002-11-13 Surgical access device with floating gel seal Expired - Fee Related CA2472362C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/056,831 US7235062B2 (en) 2002-01-24 2002-01-24 Surgical access device with floating gel seal
US10/056,831 2002-01-24
PCT/US2002/036649 WO2003061738A1 (en) 2002-01-24 2002-11-13 Surgical access device with floating gel seal

Publications (2)

Publication Number Publication Date
CA2472362A1 true CA2472362A1 (en) 2003-07-31
CA2472362C CA2472362C (en) 2010-01-12

Family

ID=22006816

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002472362A Expired - Fee Related CA2472362C (en) 2002-01-24 2002-11-13 Surgical access device with floating gel seal

Country Status (5)

Country Link
US (4) US7235062B2 (en)
EP (1) EP1467784B1 (en)
JP (1) JP4263616B2 (en)
CA (1) CA2472362C (en)
WO (1) WO2003061738A1 (en)

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Also Published As

Publication number Publication date
US20070233006A1 (en) 2007-10-04
US20110112480A1 (en) 2011-05-12
US20030139756A1 (en) 2003-07-24
JP2005515036A (en) 2005-05-26
US7235062B2 (en) 2007-06-26
US20100125248A1 (en) 2010-05-20
EP1467784B1 (en) 2013-05-15
US7883493B2 (en) 2011-02-08
EP1467784A1 (en) 2004-10-20
CA2472362C (en) 2010-01-12
JP4263616B2 (en) 2009-05-13
EP1467784A4 (en) 2008-06-18
WO2003061738A1 (en) 2003-07-31
US7651478B2 (en) 2010-01-26
US8500695B2 (en) 2013-08-06

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