SYSTEMS AND METHODS FOR ENDOSCOPIC SUBMUCOSAL DISSECTION

20220265276

17/626308

July 30, 2020

A tissue clip includes an elongate body configured to be detachably coupled to a shaft of a surgical instrument, a pair of jaw members received in the elongate body, and a resilient member configured to bow outwardly from the elongate body upon deployment of the tissue clip at a surgical site.

1. A tissue clip, comprising: a proximal body portion; first and second jaw members coupled to the proximal body portion and configured to move between an open configuration and a closed configuration to grasp tissue therebetween; and a resilient member coupled to the proximal body portion or one of the first or second jaw members, the resilient member including a segment that is laterally spaced from and in overlapping alignment with the proximal body portion when the resilient member is in a deployed state.

2. The tissue clip according to claim 1, wherein the resilient member is transitionable between a stored state and the deployed state.

3. The tissue clip according to claim 2, wherein the segment of the resilient member assumes a linear shape when the resilient member is in the stored state, and the segment of the resilient member assumes an arcuate shape when the resilient member is in the deployed state.

4. The tissue clip according to claim 2, wherein the segment of the resilient member bows outwardly from the proximal body portion when the resilient member is in the deployed state.

5. The tissue clip according to claim 1, wherein the resilient member includes: a first end portion coupled to the proximal body portion and extending distally therefrom, the segment curving proximally and laterally from the first end portion; and a second end portion extending from the segment.

6. The tissue clip according to claim 5, wherein the second end portion curves toward the proximal body portion.

7. The tissue clip according to claim 6, wherein the second end portion is disposed proximally of the first end portion.

8. The tissue clip according to claim 1, wherein the resilient member is configured to assume a looped configuration when in the deployed state.

9. The tissue clip according to claim 1, wherein the resilient member includes a wire having a predefined shape.

10. The tissue clip according to claim 1, wherein the resilient member has a first end portion rotationally coupled to the proximal body portion, and a second end portion, such that the resilient member is rotatable about a longitudinal axis defined by the proximal body portion between a first position, in which the second end portion is disposed on a first side of the proximal body portion, and at least one second position, in which the second end portion is disposed on a second side of the proximal body portion.

11. The tissue clip according to claim 10, wherein the proximal body portion defines an annular recess having the first end portion of the resilient member slidably received therein.

12. The tissue clip according to claim 1, wherein the first jaw member defines a pair of holes therethrough, the resilient member being attached to the first jaw member via the pair of holes.

13. The tissue clip according to claim 1, wherein the resilient member includes first and second wires defining a gap therebetween.

14. The tissue clip according to claim 13, wherein the gap is greater than a diameter of the proximal body portion.

15. A method of performing an endoscopic submucosal dissection, comprising: deploying a tissue clip; approximating a pair of jaw members of the tissue clip about tissue; and deploying a resilient member of the tissue clip, whereby the resilient member bows outwardly from a proximal body portion of the tissue clip to separate the grasped tissue from a gastric wall.

16. The method according to claim 15, further comprising rotating the resilient member about the proximal body portion to reposition the resilient member relative to the grasped tissue.

17. The method according to claim 15, wherein deploying the resilient member includes transitioning the resilient member from a linear shape to an arcuate shape.

18. The method according to claim 15, further comprising dissecting the grasped tissue from the muscle layer while the tissue is maintained in spaced relation from the muscle layer by the resilient member.

19. The method according to claim 15, further comprising positioning the resilient member between the tissue and the muscle layer.

20. The method according to claim 15, wherein the resilient member assumes a looped configuration after being deployed.

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