Hemostasis clip two stage deployment mechanism to eliminate shed parts

Patent metadata

Field	Value
Publication number	US-12426888-B2
Application number	US-202418678689-A
Country	US
Kind code	B2
Filing date	May 30, 2024
Priority date	Jul 24, 2019
Publication date	Sep 30, 2025
Grant date	Sep 30, 2025

Abstract

A clipping device includes a clip including a capsule and a pair of clip arms, proximal ends of which are slidably received within the channel to move the clip arms between an open configuration and a closed configuration. Each of the pair of clip arms includes an elongated opening extending through the proximal ends thereof. A connector includes a central portion received between the proximal ends of the clip arms and a pin extending from the central portion receivable within the opening of each of the clip arms, the connector movable from an unlocked configuration, in which the pin is received within a distal portion of the elongated opening, to a locked configuration, in which the pin is received within a proximal portion of the elongated opening, when a predetermined force is applied thereto.

First claim

What is claimed is:

1. A clipping device, comprising:
a clip including a capsule extending longitudinally from a proximal end to a distal end and including a channel extending therethrough, and a pair of clip arms, proximal ends of which are slidably received within the channel to move the clip arms between an open configuration and a closed configuration, each of the pair of clip arms including an opening extending through the proximal ends thereof;
a connector including a central portion receivable between the proximal ends of the clip arms and a pin extending from the central portion receivable within the opening of each of the clip arms, at least a portion of the central portion configured to be movable relative to the pin and the clip arms from an unlocked configuration to a locked configuration, when a predetermined force is applied thereto; and
a control member extending through a proximal portion of the clipping device from a proximal end to a distal end releasably coupled to the connector so that a longitudinal movement of the control member relative to the capsule moves the clip between the open and closed configurations, when the connector is in unlocked configuration.

2. The clipping device of claim 1 , wherein the capsule includes a locking tab biased to extend radially into the channel so that, when the central portion is moved from the unlocked configuration to the locked configuration, a portion of the central portion engages the locking tab to lock the clip in the closed configuration.

3. The clipping device of claim 1 , wherein the central portion includes an elongated opening extending therethrough, the pin received within the elongated opening and movable relative thereto from a proximal portion of the elongated opening in the unlocked configuration to a distal portion of the elongated opening in the locked configuration.

4. The clipping device of claim 3 , wherein the proximal and distal portions of the elongated opening are connected to one another via a middle portion having a width smaller than a width of the proximal and distal portions of the elongated opening, so that the pin deformed to permit movement from the proximal portion to the distal portion of the elongated opening.

5. The clipping device of claim 1 , wherein the central portion includes an interior member from which the pin extends and a sliding member connected to the interior member via shear tabs that are configured to be sheared off when subject to the predetermined force to move the sliding member from the unlocked configuration to the locked configuration.

6. The clipping device of claim 5 , wherein the sliding member includes a pair of sliding arms extending along opposing sides of the interior member, inwardly extending fingers at distal ends of the sliding arms engaging shear tabs at a distal end of the interior member.

7. The clipping device of claim 1 , wherein the pin engages the opening of each of the clip arms via one of a friction fit, a weld, an adhesive, and an overhang extending from the pin.

8. The clipping device of claim 1 , wherein the central portion of the connector is sized and shaped so that, when the connector is moved from the unlocked configuration to the locked configuration, the central portion engages inwardly crimped tabs at the proximal end of the capsule to move the crimped tabs radially outward, releasing the clip from the proximal portion of the clipping device.

9. A clipping device, comprising:
a clip including a capsule extending longitudinally from a proximal end to a distal end and including a channel extending therethrough, and a pair of clip arms, proximal ends of which are slidably received within the capsule to move the clip arms between an open configuration and a closed configuration, each of the clip arms including an opening extending through the proximal end thereof;
a connector receivable between the proximal ends of the clip arms and a pin extending radially outward through the opening of each of the clip arms, at least a portion of the connector being configured to be movable relative to the pin and the clip arms from an unlocked configuration to a locked configuration, when a predetermined force is applied thereto; and a control member extending through a proximal portion of the clipping device from a proximal end to a distal end releasably coupled to the connector so that a longitudinal movement of the control member relative to the capsule moves the clip between the open and closed configurations, when the connector is in unlocked configuration.

10. The clipping device of claim 9 , wherein the capsule includes a locking tab biased to extend radially into the channel so that, when the connector is moved from the unlocked configuration to the locked configuration, the portion of the connector engages the locking tab to lock the clip in the closed configuration.

11. The clipping device of claim 9 , wherein the connector includes an elongated opening extending therethrough, the pin received within the elongated opening and movable relative thereto from a proximal portion of the elongated opening in the unlocked configuration to a distal portion of the elongated opening in the locked configuration.

12. The clipping device of claim 11 , wherein the proximal and distal portions of the elongated opening are connected to one another via a middle portion having a width smaller than a width of the proximal and distal portions of the elongated opening, so that the pin deformed to permit movement from the proximal portion to the distal portion of the elongated opening.

13. The clipping device of claim 9 , wherein the connector includes an interior member from which the pin extends and a sliding member connected to the interior member via shear tabs that are configured to be sheared off when subject to the predetermined force to move the sliding member from the unlocked configuration to the locked configuration.

14. The clipping device of claim 13 , wherein the sliding member includes a pair of sliding arms extending along opposing sides of the interior member, inwardly extending fingers at distal ends of the sliding arms engaging shear tabs at a distal end of the interior member.

15. The clipping device of claim 9 , wherein the pin engages the opening of each of the clip arms via one of a friction fit, a weld, an adhesive, and an overhang extending from the pin.

16. The clipping device of claim 9 , wherein the connector is sized and shaped so that, when the connector is moved from the unlocked configuration to the locked configuration, the portion of the connector engages inwardly crimped tabs at the proximal end of the capsule to move the crimped tabs radially outward, releasing the clip from the proximal portion of the clipping device.

Assignees

• Boston Scient Scimed Inc

Inventors

• Lehtinen Laurie A
• King Joseph W
• Congdon Daniel

Classifications

• A61B2017/00818

  Treatment of the gastro-intestinal system · CPC title

• A61B2017/00296

  mounted on an endoscope · CPC title

• A61B17/10

  for applying or removing wound clamps {, e.g. containing only one clamp or staple (A61B17/076 takes precedence; containing multiple wound clamps A61B17/068)}; Wound clamp magazines · CPC title

• A61B17/00234

  for minimally invasive surgery (A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence) · CPC title

• A61B2090/037

  with a frangible part, e.g. by reduced diameter · CPC title