METHODS AND DEVICES FOR PROVIDING SURGICAL ACCESS THROUGH TISSUE TO A SURGICAL SITE

• US 20110144437A1
• Filed: 12/11/2009
• Published: 06/16/2011
• Est. Priority Date: 12/11/2009
• Status: Active Grant

• Current Assignee: Ethicon Endo-Surgery, Inc. (Johnson & Johnson)
• Original Assignee: Ethicon Endo-Surgery, Inc. (Johnson & Johnson)
• Inventors: Morgan, Jerome R., Ortiz, Mark S., Shelton, Frederick E. IV, Farrell, Theodore R., Patil, Dhananjay V., Livingston, Brandon L.
• Granted Patent: US 8,500,633 B2
• Time in Patent Office: Days
• US Class Current: 600/201
• CPC Class Codes: A61B 17/3421 Cannulas
• 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 2017/003 Steerable
• CPC Class Codes: A61B 2017/00327 with actuating members moving in opposite directions
• CPC Class Codes: A61B 2017/2905 flexible
• CPC Class Codes: A61B 2017/3443 with means for adjusting the length of a cannula
• CPC Class Codes: A61B 2017/3484 Anchoring means, e.g. spreading-out umbrella-like structure
• CPC Class Codes: A61B 2017/349 Trocar with thread on outside

Abstract

Methods and devices are provided for providing surgical access into a body cavity. A surgical access port is provided that has an adjustable longitudinal length, such as by being formed from multiple segments configured to move relative to one another. An anchor can be coupled to a distal end of the surgical access port to help secure the surgical access port within a tissue opening by engaging a distal side of the tissue. Optionally, the anchor can be removably coupled to the distal end of the surgical access port, thereby allowing any one of a plurality of anchors to be selectively coupled thereto.

Claims

1. A modular access device, comprising:

a housing having a cannula extending distally therefrom, the housing and the cannula defining a working channel extending therethrough for receiving an instrument;

at least one seal element disposed within the working channel and configured to form at least one of a seal around an instrument disposed through the working channel and a seal across the working channel when no instrument is disposed therethrough; and

an anchor segment removably coupled to a distal end of the cannula.

2. The modular access device of claim 1, wherein the anchor segment has a maximum outer diameter that is greater than a maximum outer diameter of the cannula.

3. The modular access device of claim 1, wherein the anchor segment has at least one retention thread formed on an outer surface thereof.

4. The modular access device of claim 1, wherein the anchor segment is movable between a first configuration in which the anchor segment has a first outer diameter and a second configuration in which the anchor segment has a second outer diameter that is greater than the first outer diameter.

5. The modular access device of claim 4, wherein the anchor segment is configured to move between the first configuration and the second configuration upon rotation of a distal end of the anchor segment.

6. The modular access device of claim 4, further comprising an engagement feature formed within the anchor segment and configured to couple to a complementary engagement feature on an obturator.

7. The modular access device of claim 4, wherein at least a portion of the anchor segment is configured to collapse when the anchor segment moves from the first configuration to the second configuration.

8. The modular access device of claim 4, wherein the anchor segment includes a plurality of flexible wires spaced longitudinally apart from one another and configured to collapse when the anchor segment moves from the first configuration to the second configuration.

9. The modular access device of claim 8, further comprising a sleeve disposed over the plurality of flexible wires.

10. The modular access device of claim 1, wherein the cannula is formed from a plurality of segments.

11. The modular access device of claim 10, wherein the plurality of segments are polyaxially coupled to one another.

12. A modular access system, comprising:

a housing configured to be positioned above an outer surface of a tissue;

a cannula extending distally from the housing and configured to extend through an opening in the tissue; and

a plurality of anchors of differing configurations, each anchor being removably matable to a distal end of the cannula.

13. The modular access system of claim 12, further comprising at least one seal disposed within at least one of the housing and the cannula, the at least one seal being configured to form at least one of a seal around an instrument disposed through the access device and a seal within the access device when no instrument is disposed therethrough.

14. The modular access system of claim 12, further comprising an obturator disposable through the housing and the cannula.

15. The modular access system of claim 14, wherein at least one of the plurality of anchors has an engagement feature formed therein, and the obturator has an engagement feature formed thereon and configured to mate with the engagement feature on the anchor.

16. The modular access system of claim 14, wherein the obturator has a transparent distal tip.

17. The modular access system of claim 12, wherein the anchor is movable between a first configuration in which the anchor has a first outer diameter and a second configuration in which the anchor has a second outer diameter that is greater than the first outer diameter.

18. The modular access system of claim 17, wherein an obturator disposable through the housing and the cannula is configured to rotate about a longitudinal axis of the obturator to move the anchor from the first configuration to the second configuration.

19. The modular access system of claim 12, wherein the cannula is formed from a plurality of segments.