Systems and methods for endoscopic submucosal dissection

12232,742

17/610820

May 01, 2020

A surgical clip includes an elongated body configured to be detachably coupled to a shaft of a surgical instrument, a pair of jaw members received in the body, and a release feature for selectively unlocking the jaw members.

Covidien LP (Mansfield, MA, US)

Covidien LP (Mansfield, MA, US)

1. A surgical clip, comprising: an inner body having a slot defined in the inner body and an outer surface and first and second longitudinally-extending channels defined through the outer surface; an outer body disposed about the inner body, the outer body having a portion defining a slot that overlaps the slot defined in the inner body; first and second jaw members coupled to the inner body and configured to move between an open configuration and a closed configuration to grasp tissue therebetween, each of the first and second jaw members having a tab extending laterally from a proximal end portion of the respective first and second jaw members, wherein during movement of the first and second jaw members between the open and closed configurations, the tab of the first jaw member moves within the first longitudinally-extending channel and the tab of the second jaw member moves within the second longitudinally-extending channel; and a release lever movably coupled to the inner body and disposed adjacent the proximal end portion of the first jaw member, wherein the release lever is engageable with the proximal end portion of the first jaw member to move a distal end portion of the first jaw member away from a distal end portion of the second jaw member.

2. The surgical clip according to claim 1 , wherein the release lever includes a proximal end portion accessible via the slot defined in the inner body.

3. The surgical clip according to claim 2 , wherein the release lever has a distal end portion pivotably coupled to the inner body, the proximal end portion of the release lever configured to pivot about the distal end portion thereof.

4. The surgical clip according to claim 1 , wherein at least the portion of the outer body has an oval transverse cross-sectional shape.

5. The surgical clip according to claim 1 , wherein the release lever has a T-shaped configuration, and the inner body defines a T-shaped slot in which the release lever is received.

6. The surgical clip according to claim 1 , wherein each of the first and second longitudinally-extending channels has an enlarged proximal end portion in which the respective tabs of the first and second jaw members is received when the first and second jaw members are in the closed configuration.

7. The surgical clip according to claim 6 , wherein the release lever has a tab received in the proximal end portion of the first longitudinally-extending channel.

8. The surgical clip according to claim 1 , wherein the distal end portion of the first jaw member moves toward the distal end portion of the second jaw member as the tabs of the respective first and second jaw members move proximally through a distal end portion of the respective first and second longitudinally-extending channels.

9. The surgical clip according to claim 1 , wherein the tabs of the respective first and second jaw members are configured to move through the respective first and second longitudinally-extending channels between a proximal position, in which the first and second jaw members are selectively fixed in the closed configuration, and a distal position, in which the first and second jaw members are in the open configuration.

10. The surgical clip according to claim 1 , further comprising a pivot member axially restrained with the first and second jaw members and axially slidable within the inner body, such that retraction of the pivot member approximates the first and second jaw members and advancement of the pivot member moves the first and second jaw members away from each other.

11. The surgical clip according to claim 1 , wherein the second jaw member remains in a fixed position relative to the inner body when the release lever is actuated.

12. A surgical system for performing an endoscopic submucosal dissection, comprising: a snare; and surgical clip including: an inner body defining a slot and having first and second longitudinally-extending channels defined through an outer surface of the inner body; first and second jaw members at least partially received in the inner body and configured to move between an open configuration and a closed configuration to grasp tissue therebetween, each of the first and second jaw members having a tab extending laterally from a proximal end portion of the respective first and second jaw members, wherein during movement of the first and second jaw members between the open and closed configurations, the tab of the first jaw member moves within the first longitudinally-extending channel and the tab of the second jaw member moves within the second longitudinally-extending channel; and a release lever movably coupled to the inner body and configured to be actuated by the snare via the slot in the inner body, wherein the first jaw member has a distal end portion configured to move away from a distal end portion of the second jaw member in response to the snare actuating the release lever.

13. The surgical system according to claim 12 , wherein each of the first and second longitudinally-extending channels has an enlarged proximal end portion in which the respective tabs of the first and second jaw members are received when the first and second jaw members are in the closed configuration.

14. The surgical system according to claim 12 , wherein the tabs of the respective first and second jaw members are configured to move through the respective first and second longitudinally-extending channels between a proximal position, in which the first and second jaw members are selectively fixed in the closed configuration, and a distal position, in which the first and second jaw members are in the open configuration.

15. The surgical system according to claim 12 , wherein the second jaw member remains in a fixed position relative to the inner body when the release lever is actuated by the snare.

16. A method of performing an endoscopic submucosal dissection, comprising: deploying a surgical clip including a tubular inner body having a slot defined in the inner body and an outer surface and first and second longitudinally-extending channels defined through the outer surface and an outer body disposed about the inner body, the outer body having a portion defining a slot that overlaps the slot defined in the inner body; approximating a first jaw member and a second jaw member about tissue such that a tab extending laterally from each of the jaw members moves through a respective one of the first and second longitudinally-extending channels; and actuating a release lever of the surgical clip, whereby the release lever pivots the first jaw member away from the second jaw member to release the tissue from the first and second jaw members.

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International Search Report and Written Opinion dated Aug. 28, 2020, issued in corresponding International Appln. No. PCT/US2020/030907, 16 pages. cited by applicant
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