Hemostasis reloadable clipping device with sleeve engagement

Patent metadata

Field	Value
Publication number	US-11969172-B2
Application number	US-202117302305-A
Country	US
Kind code	B2
Filing date	Apr 29, 2021
Priority date	Aug 22, 2016
Publication date	Apr 30, 2024
Grant date	Apr 30, 2024

Abstract

A system for treating tissue including a clip assembly including a pair of clip arms, a proximal end of each of the clip arms slidably received within a channel of a capsule and moveable between a tissue receiving configuration and a tissue clipping configuration. The system also including an applicator releasably coupleable to the clip assembly, the applicator including a control member connectable to the proximal end of each of the clip arms and a locking sleeve coupleable to a proximal end of the capsule via a deflectable tab including an engaging structure configured to engage a corresponding engaging structure at the proximal end of the capsule and a releasing structure proximal of the engaging structure, the releasing structure engagable with a portion of the control member to deflect the deflectable member and disengage the engaging structure of the locking sleeve from the corresponding engaging structure of the capsule.

First claim

What is claimed is:

1. A method for treating tissue, comprising:
loading a first clip assembly on an applicator by coupling a control member of the applicator to a yoke connecting proximal ends of clip arms of the first clip assembly by pushing an enlarged distal end of the control member into a socket of the yoke, and by coupling a locking sleeve of the applicator to a capsule of the first clip assembly by pushing the locking sleeve distally along the proximal end of the capsule, a deflectable tab of the locking sleeve deflecting such that an engaging structure of the deflectable tab rides along a surface of the capsule until the engaging structure engages a corresponding engaging structure of the capsule;
inserting the loaded clip assembly into a target site within a living body via a working channel of an endoscope;
moving the first clip assembly between a tissue receiving configuration, in which distal ends of the clip arms are separated from one another, and a tissue clipping configuration, in which distal ends of the clip arms are moved toward one another, by moving the control member longitudinally relative to the locking sleeve until a target tissue is gripped therebetween, as desired; and
releasing the first clip assembly from the applicator by drawing the control member proximally relative to the yoke, beyond a predetermined threshold value, so that the control member disengages from the yoke and a portion of the control member engages a releasing structure positioned proximally of the engaging structure of the deflectable tab, engagement of the portion of the control member and the releasing structure causing the deflectable tab to deflect and disengage the engaging structure of the deflectable tab from the corresponding engaging structure of the capsule.

2. The method of claim 1 , further comprising locking the first clip assembly in the tissue clipping configuration such that the target tissue is locked between the clip arms.

3. The method of claim 2 , wherein locking the first clip assembly in the tissue clipping configuration comprises a locking tab at the proximal end of at least one of the clip arms engaging a locking window extending through a wall of the capsule.

4. The method of claim 1 , further comprising inserting a distal portion of the applicator through an opening of a cartridge housing the first clip assembly to load the first clip assembly to the applicator.

5. The method of claim 1 , further comprising loading a second clip assembly to the applicator by coupling the control member to a yoke of the second clip assembly and by coupling the locking sleeve to a proximal end of a capsule of the second clip assembly.

6. The method of claim 1 , wherein each of the engaging structure of the deflectable tab and the releasing structure is a bend extending into a channel of the locking sleeve, the locking sleeve mountable over the proximal end of the capsule and the deflectable tab deflectable radially outward away from a longitudinal axis of the locking sleeve to releasably load the first clip assembly on the applicator.

7. The method of claim 1 , wherein the first clip assembly includes a stop washer slidably mounted over the portion of the control member, a surface of the stop washer engaging the releasing structure to deflect the deflectable tab.

8. The method of claim 1 , wherein the engaging structure of the deflectable tab is a window extending laterally through the deflectable tab and the corresponding engaging structure of the capsule is a bend extending outward, away from a longitudinal axis of the capsule so that the locking sleeve is receivable within a channel of the capsule and the deflectable tab is deflectable radially inward toward a longitudinal axis of the locking sleeve.

9. The method of claim 8 , wherein the releasing structure is a protrusion extending inward into a channel of the locking sleeve so that, when the portion of the control member engages the protrusion, the deflectable tab deflects radially inward toward the longitudinal axis of the locking sleeve.

10. The method of claim 8 , wherein the releasing structure is an element extending across a channel of the locking sleeve from an interior surface of the deflectable tab so that, when the portion of the control member engages the releasing structure, the deflectable tab deflects radially inward toward the longitudinal axis of the locking sleeve.

11. The method of claim 1 , wherein the releasing structure is a first portion of an outer sleeve, the outer sleeve extending about a portion of the deflectable tab proximal of the engaging structure of the deflectable tab and having a second portion, the second portion extending proximally from the first portion.

12. The method of claim 11 , wherein the second portion of the outer sleeve includes an arm offset with respect to the deflectable tab, the arm including a release tab at a proximal end thereof extending laterally inward into a longitudinal channel of the locking sleeve so that, when the portion of the control member engages the release tab, the release tab applies a proximal force on the first portion deforming the first portion, the deformed first portion deflecting the deflectable tab radially inward toward the longitudinal axis of the locking sleeve.

13. The method of claim 1 , wherein the clip an us are biased in the tissue receiving configuration.

Assignees

• Boston Scient Ltd
• Boston Scientific Medical Device Limited

Inventors

• Randhawa Nishant
• Singh Sukhvinder
• MOREY Subodh
• Rivera Federico

Classifications

• A61B17/1222 Primary

  Packages or dispensers therefor (clip magazines incorporated in a clip-applying instrument A61B17/128; for surgical articles A61B50/30) · CPC title

• A61B17/122

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

• A61B17/1285 Primary

  for minimally invasive surgery · CPC title

• A61B2017/00296

  mounted on an endoscope · CPC title

• A61B2017/00477

  Coupling (A61B2017/0046 takes precedence) · CPC title