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

• US 20110144444A1
• 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: Zingman, Aron O., Parihar, Shailendra K., Zeiner, Mark S., Sakai, Kiyoto B. JR., Menezes, Edgar V.
• Granted Patent: US 8,517,932 B2
• Time in Patent Office: Days
• US Class Current: 600/206
• 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 17/3421 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 2017/2905 flexible
• CPC Class Codes: A61B 2017/2908 Multiple segments connected by articulations
• 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 surgical 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, and the cannula being movable between an insertion configuration and a deployed configuration, wherein a biasing force biases the cannula to the deployed configuration; and

an adjustment mechanism coupled to the housing and configured to adjust the biasing force.

2. The surgical access device of claim 1, further comprising a biasing element coupled to the cannula and configured to apply the biasing force to the cannula.

3. The surgical access device of claim 2, wherein the biasing element comprises at least one cable extending through the cannula.

4. The surgical access device of claim 3, wherein the adjustment mechanism is configured to adjust a length of the at least one cable to adjust the biasing force.

5. The surgical access device of claim 1, wherein the cannula has a length in the insertion configuration that is greater than a length of the cannula in the deployed configuration.

6. The surgical access device of claim 1, wherein the cannula has a maximum outer diameter in the insertion configuration that is greater than a maximum outer diameter of the cannula in the deployed configuration.

7. The surgical access device of claim 1, wherein the adjustment mechanism is selectively rotatable relative to the housing to adjust the biasing force.

8. The surgical access device of claim 7, wherein the cannula includes a distal-most anchor, and wherein rotation of the adjustment mechanism is effective to expand the distal-most anchor.

9. The surgical access device of claim 1, wherein the cannula comprises a plurality of segments movably coupled to one another.

10. The surgical access device of claim 1, further comprising 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.

11. A surgical 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, and the cannula being movable between an insertion configuration and a deployed configuration;

at least one biasing element coupled to the cannula and configured to apply a biasing force to the cannula to bias the cannula to the deployed configuration; and

an adjustment mechanism operatively coupled to the at least one biasing element and configured to adjust the biasing force.

12. The surgical access device of claim 11, wherein the biasing element comprises at least one cable extending through the cannula.

13. The surgical access device of claim 12, wherein the adjustment mechanism is configured to adjust a length of the at least one cable to adjust the biasing force.

14. The surgical access device of claim 11, wherein the cannula has a length in the insertion configuration that is greater than a length of the cannula in the deployed configuration.

15. The surgical access device of claim 11, wherein the cannula has a maximum outer diameter in the insertion configuration that is greater than a maximum outer diameter of the cannula in the deployed configuration.

16. The surgical access device of claim 11, wherein the adjustment mechanism is selectively rotatable relative to the housing to adjust the biasing force.

17. The surgical access device of claim 11, wherein the cannula includes a distal-most expandable anchor.

18. The surgical access device of claim 17, wherein the distal-most expandable anchor moves from an insertion configuration to an expanded configuration when the cannula is moved from the insertion configuration to the deployment configuration.

19. The surgical access device of claim 11, wherein the cannula comprises a plurality of segments movably coupled to one another.

20. The surgical access device of claim 11, further comprising 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.