Collet deployable hemostasis clip

Patent metadata

Field	Value
Publication number	US-12533140-B2
Application number	US-202217812084-A
Country	US
Kind code	B2
Filing date	Jul 12, 2022
Priority date	Sep 9, 2021
Publication date	Jan 27, 2026
Grant date	Jan 27, 2026

Abstract

A clipping system includes a device including longitudinal slots extending through a wall thereof and a clip releasably received within a distal portion of the device. The clip includes a capsule and a pair of clip arms. Proximal ends of the arms are slidably received within the capsule and a collet is slidably mounted over the device movable between an insertion configuration, in which the collet is positioned over the distal portion of the device pressing the distal portion against the capsule and a deployed configuration, in which the collet is proximal of the distal portion so that the clip is releasable from the device. A control member extends through the channel of the device to couple to the proximal ends of the arms and a portion of the collet. Movement of the member opens and closes the clip and moves the collet between the insertion and deployed configurations.

First claim

What is claimed is:

1 . A clipping system for treating tissue, comprising:
an insertion device extending longitudinally from a proximal end to a distal end and including a channel extending therethrough, the insertion device including a plurality of longitudinal slots extending through a wall thereof and along a distal portion thereof such that the longitudinal slots are open to the channel and the distal end of the insertion device; a clip releasably received within the distal portion of the insertion device, the 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 of the capsule to move the clip arms between an open configuration, in which distal ends thereof are separated from one another to receive a tissue therebetween, and a closed configuration, in which the distal ends are drawn toward one another to grip tissue there between; a collet slidably mounted over the insertion device and movable between an insertion configuration, in which the collet is positioned over the distal portion of the insertion device to press the distal portion against the capsule and to hold the capsule therein, and a deployed configuration, in which the collet is proximal of the distal portion so that the clip is releasable from the distal portion of the insertion device; and a control member extending through the channel of the insertion device to be coupled to the proximal ends of the clip arms and a portion of the collet so that movement of the clip between the open and closed configurations and movement of the collet between the insertion configuration and the deployed configuration is controlled via a longitudinal movement of the control member relative to the insertion device.

2 . The system of claim 1 , further comprising a yoke coupling the control member to the clip arms and the collet, the yoke including a distal portion connected to the clip arms and a proximal portion connected to a portion of the collet, the distal and proximal portions of the yoke connected to one another via a separable connection that is configured to separate when subject to a predetermined force exceeding a predetermined threshold value.

3 . The system of claim 2 , wherein the distal portion is received between the proximal ends of the clip arms and includes protrusions extending from opposing sides thereof, the protrusions received within openings extending through a proximal portion of the clip arms.

4 . The system of claim 2 , wherein the proximal portion houses a distal end of the control member therein and includes a longitudinal groove extending therealong, an engaging tab of the collet extending into the channel of the insertion device to be slidably received within the longitudinal groove.

5 . The system of claim 4 , wherein a length of the longitudinal groove corresponds to a distance via which the control member is moved relative to the insertion device during a movement of the clip between the open and the closed configurations.

6 . The system of claim 2 , wherein the clip arms include engaging features configured to engage a portion of the capsule such that, when the engaging features engage the capsule, the clip arms are prevented from moving further proximally relative to capsule and the predetermined force is exerted on the distal end of the control member.

7 . The system of claim 1 , wherein the proximal ends of the clip arms are biased radially outward and include locking structures extending laterally therefrom so that, when the proximal ends of the clip arms are moved proximally of the proximal end of the capsule, the locking structures engage a proximal edge of the capsule to lock the clip in the closed configuration.

8 . The system of claim 1 , wherein the distal ends of the clip arms are biased toward the open configuration so that, when the clip arms are drawn into the capsule, the clip arms are constrained toward the closed configuration via an interior surface of the capsule and, when the clip arms are moved distally out of the capsule, the clip arms are permitted to revert to their biased open configuration.

9 . The system of claim 1 , wherein the capsule is keyed to the insertion device so that a rotation of the insertion device correspondingly rotates the clip.

10 . The system of claim 1 , wherein the insertion device is keyed to the collet so that a rotation of the insertion device correspondingly rotates the collet and the clip.

11 . The system of claim 1 , wherein the insertion device further includes a crimp tab positioned immediately distal a proximal end of the collet when the collet is in the insertion configuration and extending into the channel of the insertion device, the crimp tab deformable to permit the collet to move proximally therepast when subject to a predetermined force exceeding a predetermined threshold value via the collet.

12 . A clipping system, comprising:
a catheter extending longitudinally from a proximal end to a distal end and including a channel extending therethrough, the catheter including a plurality of longitudinal slots extending through a wall thereof from the distal end along a distal portion of the catheter; 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 of the capsule to move the clip arms between an open configuration and a closed configuration, the capsule of the clip configured to be releasably received within the distal portion of the catheter; a collet slidably mounted over the catheter and movable between an insertion configuration, in which the collet is positioned over the distal portion of the catheter to press the distal portion against the capsule to hold the capsule therein, and a deployed configuration, in which the collet is proximal the distal portion so that the clip is releasable from the distal portion of the catheter; and a control member connected to the clip arms and the collet via a yoke, the yoke including a distal portion connected to the clip arms and a proximal portion connected to a portion of the collet, the distal and proximal portions of the yoke connected to one another via a separable connection that is configured to separate when subject to a predetermined force exceeding a predetermined threshold value.

13 . The system of claim 12 , wherein the proximal portion houses an enlarged distal end of the control member therein and includes a longitudinal groove extending therealong, an engaging tab of the collet extending into the channel of the insertion catheter to be slidably received within the longitudinal groove.

14 . The system of claim 12 , wherein the proximal ends of the clip arms are biased radially outward and include locking structures extending laterally therefrom so that, when the proximal ends of the clip arms are moved proximally of the proximal end of the capsule, the locking structures engage a proximal edge of the capsule to lock the clip in the closed configuration.

15 . The system of claim 12 , wherein the clip arms include engaging features configured to engage portion of the capsule such that, when the engaging features engage the capsule, the clip arms are prevented from moving further proximally relative to capsule and the predetermined force is exerted on the distal end of the control member.

Assignees

• Boston Scient Scimed Inc

Inventors

• Pic Andrew
• King Joseph W

Classifications

• A61B2017/12004

  for haemostasis, for prevention of bleeding · CPC title

• 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