Wound retractor including rigid ring

• US 9,668,721 B2
• Filed: 06/07/2016
• Issued: 06/06/2017
• 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:
  US15/175,428
• Publication Number:
  US 20160278759A1
• Time in Patent Office: 364 Days
• 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 wound retractor for accessing a body cavity, the wound retractor comprising:

a proximal ring configured for disposition outside of the body cavity including an inflatable member that is adjustable to a plurality of radial dimensions;

a distal ring configured for disposition inside the body cavity;

a flexible sleeve extending between the proximal and distal rings and defining a passage for reception of an object, the proximal ring configured to adjust a radial dimension of the flexible sleeve to retract tissue;

a rigid ring member that is separately insertable by a user during a surgical procedure into a space directly adjacent to an inner circumferential surface of the proximal ring, the rigid ring member having an outer circumferentially recessed portion configured to receive at least a portion of the proximal ring, the rigid ring member selectively providing rigidity to the proximal ring.

2. The wound retractor according to claim 1, wherein the inflatable member is embedded within the proximal ring.

3. The wound retractor according to claim 2, wherein an outer surface of the proximal ring defines a port in communication in an interior with the inflatable member.

4. The wound retractor according to claim 3, wherein the proximal ring includes a lid hingedly attached to the proximal member.

5. The wound retractor according to claim 4, wherein the lid has a closed state in which the lid seals the port.

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

7. The wound retractor according to claim 1, wherein the inflatable member is configured to expand in a radial direction.

8. The wound retractor according to claim 1, further including an inflation source to deliver an inflation medium to the inflatable member.

9. The wound retractor according to claim 1, wherein the proximal ring is transitionable between a maximum radial dimension and a minimum radial dimension.

10. The wound retractor according to claim 1, wherein the distal ring includes a deformable material.

11. The wound retractor according to claim 1, wherein the distal ring has a constant radial dimension in a normal, unbiased condition.

12. The wound retractor according to claim 1, wherein the distal ring includes a flexible ring member to maintain a constant radial dimension in a normal, unbiased condition.

13. The wound retractor according to claim 1, wherein the flexible sleeve has a proximal end attached to the proximal ring.