US-12616481-B2 - Repositionable over-the-scope clip

US12616481B2US 12616481 B2US12616481 B2US 12616481B2US-12616481-B2

Abstract

A system includes a cap having first and second cap members, a clip, and first and second coupling members. The clip includes a first part rotatably coupled to a second part and first members coupled to the first part and corresponding second members coupled to the second part. Each of the first members is coupled to a corresponding one of the second members to form an iris mechanism operating to alter a size of a central opening of the clip when the parts are rotated relative to one another between open/closed configurations. The first coupling member is coupled between the first cap member and the first part, and the second coupling member is coupled between the second cap member and the second part so that, upon rotation of the first cap member relative to the second cap member, the first part is rotated relative to the second part.

Inventors

Deepak Kumar Sharma
Sharath Kumar G

Assignees

Boston Scientific Medical Device Limited

Dates

Publication Date: 20260505
Application Date: 20240611

Claims (10)

1 . A clipping system for treating tissue, comprising: a cap configured to be mounted over a distal end of an insertion device, the cap extending from a proximal end to a distal end and including a channel extending therethrough, the cap including a first cap member and a second cap member, wherein the first cap member is rotatable relative to the second cap member; a clip including a peripheral body including a first part rotatably coupled to a second part and a plurality of first flexible members coupled to the first part and a corresponding plurality of second flexible members that are coupled to the second part, each of the first flexible members being coupled to a corresponding one of the second flexible members to form an iris mechanism operating to alter a size of a central opening of the clip when the first and second parts are rotated relative to one another from a fully open configuration in which the central opening is a maximum size configured to receive target tissue therein and a fully closed configuration in which the central opening is a minimum size configured to clip target tissue received therein; a first coupling member coupled between the first cap member and the first part of the clip; and a second coupling member coupled between the second cap member and the second part of the clip so that, upon rotation of the first cap member relative to the second cap member, the first part of the clip is rotated relative to the second part of the clip.
2 . The system of claim 1 , wherein the first cap member includes a helical feature and the second cap member includes a coupling arrangement engaging the helical feature so that linear movement of the first cap member relative to the second cap member rotates the first cap member relative to the second cap member.
3 . The system of claim 2 , wherein the helical feature is a groove and the coupling arrangement includes a projection extending from the second cap member to enter the groove of the first cap member.
4 . The system of claim 2 , further comprising: a cap coupling arrangement configured to mount the cap on the insertion device, wherein the first cap member is coupled to the cap coupling arrangement so that the first cap member can move longitudinally relative to the cap coupling arrangement, engagement between helical feature of the first cap member and the coupling of the second cap member translating longitudinal movement of the first cap member relative to the cap coupling arrangement into rotation of the second cap member relative to the first cap member.
5 . The system of claim 4 , further comprising: a pull wire coupled to the first cap member so that movement of the pull wire relative to the cap coupling arrangement moves the first cap member longitudinally relative to the cap coupling arrangement.
6 . The system of claim 1 , wherein the first and second flexible members are configured to bias the iris mechanism toward the fully closed configuration.
7 . The system of claim 6 , wherein each of the first and second flexible members extends along a substantially circular arc.
8 . The system of claim 6 , wherein the first part of the clip is a first disc having a distal surface and wherein the second part of the clip is a second disc having a proximal surface adjacent to the distal surface of the first part.
9 . The system of claim 8 , wherein the first and second flexible members extend within a central space of the first and second discs, respectively.
10 . The system of claim 1 , wherein the iris mechanism is configured so that, when the first part of the clip is rotated relative to the second part of the clip in a direction reducing a distance between a point of connection between each first flexible member and the first part of the clip and a point of connection between the corresponding one of the second flexible members and the second part of the clip, the central opening of the iris mechanism is opened.

Description

PRIORITY CLAIM The present disclosure claims priority to U.S. Provisional Patent Application Ser. No. 63/514,650 filed Jul. 20, 2023; the disclosure of which is incorporated herewith by reference. FIELD The present disclosure relates to endoscopic devices and, in particular, relates to an endoscopic clipping device for treating tissue along the gastrointestinal tract. BACKGROUND Some endoscopic procedures (such as the removal of larger lesions (cancerous and other); tunneling under the mucosal layer of the GI tract to treat issues below the mucosa; full thickness removal of tissue (cancerous and other); treatment of issues on other organs by passing outside of the GI Tract (Natural Orifice Transluminal Endoscopic Surgery aka NOTES®)); and endoscopic treatment/repair of post-surgical issues (e.g., post-surgical leaks, breakdown of surgical staple lines and/or anastomotic leaks); may increase the risk, in certain cases, of, for example, intraabdominal hypertension and seeding of cancer cells. In addition, these procedures generally create tissue openings that need to be hemo-statically sealed. SUMMARY The present disclosure relates to a clipping system for treating tissue. The system includes a cap, a clip, a first coupling member and a second coupling member. The cap is configured to be mounted over a distal end of an insertion device. The cap extends from a proximal end to a distal end and includes a channel extending therethrough. The cap includes a first cap member and a second cap member. The first cap member is rotatable relative to the second cap member. The clip includes a peripheral body with a first part rotatably coupled to a second part and a plurality of first flexible members coupled to the first part and a corresponding plurality of second flexible members that are coupled to the second part. Each of the first flexible members is coupled to a corresponding one of the second flexible members to form an iris mechanism operating to alter a size of a central opening of the clip when the first and second parts are rotated relative to one another from a fully open configuration in which the central opening is a maximum size configured to receive target tissue therein and a fully closed configuration in which the central opening is a minimum size configured to clip target tissue received therein. The first coupling member is coupled between the first cap member and the first part of the clip. The second coupling member is coupled between the second cap member and the second part of the clip so that, upon rotation of the first cap member relative to the second cap member, the first part of the clip is rotated relative to the second part of the clip. In an embodiment, the first cap member includes a helical feature and the second cap member includes a coupling arrangement engaging the helical feature so that linear movement of the first cap member relative to the second cap member rotates the first cap member relative to the second cap member. In an embodiment, the helical feature is a groove and the coupling arrangement includes a projection extending from the second cap member to enter the groove of the first cap member. In an embodiment, the system further includes a cap coupling arrangement configured to mount the cap on the insertion device. The first cap member is coupled to the cap coupling arrangement so that the first cap member can move longitudinally relative to the cap coupling arrangement, engagement between helical feature of the first cap member and the coupling of the second cap member translating longitudinal movement of the first cap member relative to the cap coupling arrangement into rotation of the second cap member relative to the first cap member. In an embodiment, the first and second flexible members are configured to bias the iris mechanism toward the fully closed configuration. In an embodiment, each of the first and second flexible members extends along a substantially circular arc. In an embodiment, the first part of the clip is a first disc having a distal surface and wherein the second part of the clip is a second disc having a proximal surface adjacent to the distal surface of the first part. In an embodiment, the first and second flexible members extend within a central space of the first and second discs, respectively. In an embodiment, the system further includes a pull wire coupled to the first cap member so that movement of the pull wire relative to the cap coupling arrangement moves the first cap member longitudinally relative to the cap coupling arrangement. In an embodiment, the iris mechanism is configured so that, when the first part of the clip is rotated relative to the second part of the clip in a direction reducing a distance between a point of connection between each first flexible member and the first part of the clip and a point of connection between the corresponding one of the second flexible members and the second part of the clip, the central opening