Wound retractor including rigid ring

• US 9,357,910 B2
• Filed: 01/31/2013
• Issued: 06/07/2016
• Est. Priority Date: 02/23/2012
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Smith, Robert C.
• Primary Examiner(s): BOLES, SAMEH RAAFAT
• Application Number:
  US13/755,156
• Publication Number:
  US 20130225930A1
• Time in Patent Office: 1,223 Days
• Field of Search: 600203-209
• US Class Current: 1/1
• CPC Class Codes: A61B 1/24 for the mouth, i.e. stomatoscopes, e.g. with tongue depressors tongue depressors per se A61B13/00; Instruments for opening or keeping open the mouth combined with saliva removers A61C17/00; mouth openers for animals A61D15/00
• CPC Class Codes: A61B 1/303 for the vagina, i.e. vaginoscopes
• CPC Class Codes: A61B 1/31 for the rectum, e.g. proctoscopes, sigmoidoscopes , colonoscopes
• CPC Class Codes: A61B 1/3132 for laparoscopy
• CPC Class Codes: A61B 1/32 Devices for opening or enlarging the visual field, e.g. of a tube of the body dilators A61M29/00
• CPC Class Codes: A61B 17/0218 for minimally invasive surgery A61B17/0281, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 17/0293 with ring member to support retractor elements
• CPC Class Codes: A61B 17/3423 Access ports, e.g. toroid shape introducers for instruments or hands access sites for liquids A61M39/0247
• CPC Class Codes: A61B 2017/00557 inflatable A61B2017/22051 takes precedence

Abstract

A surgical apparatus for positioning within a tissue tract accessing an underlying body cavity adapts to tissue tracts of different widths. The surgical instrument includes a proximal member, a distal member, and a sleeve extending between the proximal member and the distal member and defining a longitudinal passage therein. The proximal member includes an inflatable member that selectively adjusts the radial dimension of the proximal member. A ring member may be separately insertable by a user during a surgical procedure into the space directly adjacent to the radially-inner surface of the inflatable member, so as to selectively provide rigidity to the proximal member.

Claims

1. A surgical apparatus for positioning within a tissue tract accessing an underlying body cavity, the surgical apparatus comprising:

a proximal member including an inflatable member, the inflatable member adjustable to a plurality of radial dimensions;

a distal member axially aligned with respect to the proximal member;

a flexible sleeve extending between the proximal and distal members and defining a passage for reception of an object; and

a ring member that is separately insertable by a user during a surgical procedure such that the inflatable member circumferentially surrounds the ring member, so as to selectively provide rigidity to the proximal member.

2. The surgical apparatus according to claim 1, wherein the proximal member has an annular configuration.

3. The surgical apparatus according to claim 1, wherein the distal member has an annular configuration.

4. The surgical apparatus according to claim 1, wherein the inflatable member has an annular configuration.

5. The surgical apparatus according to claim 1, wherein the inflatable member is embedded within the proximal member.

6. The surgical apparatus according to claim 1, wherein the inflatable member is mounted to an outer circumferential surface of the proximal member.

7. The surgical apparatus according to claim 1, wherein the inflatable member is configured to expand in a radial dimension.

8. The surgical apparatus according to claim 1, wherein the proximal member is configured to transit between a maximal radial dimension and a minimal radial dimension.

9. The surgical apparatus according to claim 1, wherein the distal member includes a deformable material.

10. The surgical apparatus according to claim 1, wherein the distal member has a constant radial dimension in a normal, unbiased condition.

11. The surgical apparatus according to claim 1, wherein the distal member includes a flexible ring member to maintain a constant radial dimension in a normal, unbiased condition.

12. The surgical apparatus according to claim 1, further comprising an inflation source to deliver an inflation medium to the inflatable member.

13. The surgical apparatus according to claim 1, wherein the flexible sleeve has a proximal end attached to the proximal member.

14. The surgical apparatus according to claim 1, wherein the inflatable member is adjustable in a radial direction.

15. A surgical apparatus for positioning within a tissue tract accessing an underlying body cavity, the surgical apparatus comprising:

a proximal member including;

an inflatable member adjustable to a plurality of radial dimensions; and

a rigid ring member defining a circumferential recessed portion for receiving the inflatable member therewithin;

a distal member axially aligned with respect to the proximal member; and

a flexible sleeve extending between the proximal and distal members and defining a passage for reception of an object.

16. The surgical apparatus according to claim 15, wherein the flexible sleeve has a proximal end attached to the proximal member.

17. The surgical apparatus according to claim 15, wherein the inflatable member is adjustable in a radial direction.