Reloadable clip with a flaring capsule deformation

Patent metadata

Field	Value
Publication number	US-11547422-B2
Application number	US-202016905308-A
Country	US
Kind code	B2
Filing date	Jun 18, 2020
Priority date	Jul 16, 2019
Publication date	Jan 10, 2023
Grant date	Jan 10, 2023

Abstract

A clipping system includes a clip having a pair of clip arms, proximal ends of the clip arms slidably received within a channel of a capsule to be moved between an open configuration and a closed configuration. A proximal end of the capsule including connecting tabs extending proximally therefrom. An applicator includes an elongated flexible member and a control member extending therethrough. The control member includes a distal end connected to the clip arms to move the clip assembly between the open and closed configurations. A distal end of the elongated flexible member includes a bushing including a first ramped surface, along which the connecting tabs slide along to engage a corresponding engaging feature of the bushing, and a second ramped surface proximal of the first ramped surface, the connecting tabs slidable along the second ramped surface to plastically deform toward a deployed configuration.

First claim

What is claimed is:

1. A reloadable clipping system for treating tissue, comprising:
a clip including a pair of clip arms, each of the clip arms extending from a proximal end to a distal end, the proximal ends of the pair of clip arms slidably received within a channel of a capsule to be moved between an open configuration and a closed configuration, a proximal end of the capsule including a plurality of connecting tabs extending proximally therefrom; and
an applicator including an elongated flexible member and a control member extending therethrough, the control member including a distal end configured to be connected to the pair of clip arms to move the clip between the open configuration and the closed configuration, a distal end of the elongated flexible member including a bushing including a first ramped surface, along which the plurality of connecting tabs slide until an engaging feature extending radially inward from each of the plurality of connecting tabs engages a corresponding engaging feature of the bushing, and a second ramped surface proximal of the first ramped surface, each of the plurality of connecting tabs being slidable along the second ramped surface to plastically deform toward a deployed configuration in which the plurality of connecting tabs are moved away from a longitudinal axis of the capsule to release the bushing therefrom, each of the engaging features of the plurality of connecting tabs being configured to be plastically deformed and bent against the connecting tab from which it extends when the connecting tab is moved to the deployed configuration.

2. The system of claim 1 , wherein the corresponding engaging feature of the bushing is a notch extending about a periphery of the bushing between the first and second ramped surfaces so that the notch defines a proximal end of the first ramped surface and a distal end of the second ramped surface.

3. The system of claim 2 , wherein a diameter of the bushing at the proximal end of the first ramped surface is greater than a diameter of the bushing at the distal end of the second ramped surface.

4. The system of claim 2 , wherein the plurality of connecting tabs are elastically deformable as the plurality of connecting tabs are slid along the first ramped surface so that, when the engaging features of the plurality of connecting tabs are positioned about the notch, the plurality of connecting tabs revert to their initial configuration and the engaging features of the plurality of connecting tabs are received within the notch to couple the capsule to the bushing.

5. The system of claim 1 , wherein each of the first and second ramped surfaces define conically shaped portions of the bushing which taper toward a distal end thereof.

6. The system of claim 1 , wherein the engaging feature of each of the plurality of connecting tabs includes an engaging element extending, in the initial configuration, radially inward from a proximal end of the connecting tab from which it extends.

7. The system of claim 6 , wherein, in the initial configuration, the engaging element of each of the plurality of connecting tabs extends substantially perpendicular relative to a longitudinal axis of the capsule.

8. The system of claim 1 , wherein the engaging feature of each of the plurality of connecting tabs includes a stamped boss extending, in the initial configuration, inward, toward the longitudinal axis of the capsule.

9. The system of claim 1 , wherein the proximal ends of the pair of clip arms are connected to one another via a yoke coupleable with an enlarged distal end of the control member.

10. The system of claim 9 , wherein the yoke includes a proximal portion and a distal portion connected to one another at a point configured to separate when a predetermined force is exerted thereon.

11. The system of claim 1 , wherein each of the engaging features of the plurality of connecting tabs is configured to plastically deform radially outward toward the connecting tab from which it extends.

12. A clip device, comprising:
a pair of clip arms, each of the clip arms extending from a proximal end to a distal end;
a capsule extending longitudinally from a proximal end to a distal end and including a channel extending therethrough so that the proximal ends of the pair of clip arms are slidably received within the channel to be moved between an open configuration and a tissue clipping configuration; and
a plurality of connecting tabs extending proximally from the proximal end of the capsule, each of the plurality of connecting tabs including an engaging feature which, in an initial configuration of the connecting tab, extends radially inward from each of the plurality of connecting tabs toward a longitudinal axis of the capsule to engage a notch extending about a periphery of a bushing of an applicator, the plurality of connecting tabs movable from the initial configuration toward a deployed configuration, in which the plurality of connecting tabs are plastically deformed in a direction away from the longitudinal axis of capsule to release the bushing therefrom, each of the engaging features of the plurality of connecting tabs being configured to be bent and deformed against the connecting tab from which it extends as the connecting tabs are moved to the deployed configuration.

13. The device of claim 12 , wherein each of the engaging feature of each of the plurality of connecting tabs includes an engaging element extending, in the initial configuration, radially inward from a proximal end of the connecting tab from which it extends substantially perpendicular to the longitudinal axis of the capsule.

14. The device of claim 12 , wherein each of the engaging features of the plurality of connecting tabs includes a stamped boss.

15. The device of claim 12 , wherein each of the plurality of connecting tabs includes a window extending therethrough.

16. The device of claim 12 , wherein the proximal ends of the pair of clip arms are connected to one another via a yoke coupleable with an enlarged distal end of a control member.

Assignees

• Boston Scient Scimed Inc

Inventors

• Murray Collin
• Stock Henry
• Lehtinen Laurie A
• Ashton Caitlyn Bintz

Classifications

• A61B2017/00818

  Treatment of the gastro-intestinal system · CPC title

• A61B17/1227 Primary

  Spring clips · CPC title

• A61B17/1285 Primary

  for minimally invasive surgery · CPC title

• A61B2017/00526

  Methods of manufacturing · CPC title

• A61B17/122

  Clamps or clips, e.g. for the umbilical cord {(for the vas deferens A61F6/206)} · CPC title