Hemostatic clip for endoscope

Patent metadata

Field	Value
Publication number	US-2025352218-A1
Application number	US-202519207578-A
Country	US
Kind code	A1
Filing date	May 14, 2025
Priority date	May 17, 2024
Publication date	Nov 20, 2025
Grant date	—

Abstract

Hemostatic clip for endoscope is provided, including a clip holder and a clamping assembly, the clip holder has a passage provided to extend therethrough, a guiding slot communicating with the passage and an avoidance slot provided circumferentially along the clip holder and spaced apart from the guiding slot, the clip holder includes a first limiting portion, at least part of the first limiting portion is located in the guiding slot, and at least part of the first limiting portion is located between the guiding slot and the avoidance slot; and at least part of the clamping assembly is located in the passage, and the clamping assembly includes a movable pin and two clips connected to each other, with the movable pin threaded through the guiding slot; the clamping assembly can move relative to the clip holder along the passage, enabling the movable pin to move along the guiding slot.

First claim

1 . A hemostatic clip for an endoscope, comprising:
a clip holder, wherein the clip holder comprises a passage that runs therethrough, a guiding slot communicating with the passage, and an avoidance slot provided circumferentially along the clip holder and spaced apart from the guiding slot, wherein the clip holder comprises a first limiting portion, at least part of the first limiting portion is located in the guiding slot, and at least part of the first limiting portion is located between the guiding slot and the avoidance slot; and a clamping assembly, wherein at least part of the clamping assembly is located in the passage, and the clamping assembly comprises a movable pin and at least two clips, wherein the movable pin and the at least two clips are connected to each other, and the movable pin extends through the guiding slot; the clamping assembly is movable relative to the clip holder along the passage, so as to make the movable pin movable along the guiding slot, wherein the movable pin is movable along the guiding slot to a locking position, the first limiting portion is configured to deform towards an interior of the avoidance slot when subjected to compression of the movable pin, and the first limiting portion is configured to limit the movable pin to the locking position, so that the at least two clips are closed to each other and locked relative to a position of the clip holder.

2 . The hemostatic clip for an endoscope according to claim 1 , wherein the first limiting portion is configured to generate elastic deformation when subjected to compression of the movable pin, so as to make the movable pin movable along the guiding slot and detach from the first limiting portion.

3 . The hemostatic clip for an endoscope according to claim 1 , wherein the clip holder comprises a plurality of first limiting portions, at least part of the guiding slot is provided between two first limiting portions opposite to each other.

4 . The hemostatic clip for an endoscope according to claim 1 , wherein the locking position is located at a proximal end of the guiding slot.

5 . The hemostatic clip for an endoscope according to claim 1 , wherein the hemostatic clip for an endoscope further comprises:
a control assembly, wherein at least part of the control assembly is located in the passage, and the movable pin is connected to the control assembly; and the control assembly is movable relative to the clip holder along the passage, so as to drive the clamping assembly to move.

6 . The hemostatic clip for an endoscope according to claim 5 , wherein the movable pin comprises a connecting portion and two second limiting portions, and two ends of the connecting portion are connected to the two second limiting portions, respectively; and
the clips and the control assembly are all connected to the connecting portion, and the second limiting portions are configured to limit the clips and the control assembly on the connecting portion in an extending direction of the movable pin.

7 . The hemostatic clip for an endoscope according to claim 5 , wherein the control assembly comprises a pulling wire and a clevis, the movable pin is connected to the clevis, the clevis is formed with a first fitting hole, and the pulling wire is embedded in the first fitting hole so as to be connected to the clevis; and
when the movable pin is located in the locking position and the pulling wire is subjected to a preset tensile force, the pulling wire is capable of being detached from the first fitting hole, so as to disconnect the pulling wire from the clevis.

8 . The hemostatic clip for an endoscope according to claim 5 , wherein the control assembly is formed with a second fitting hole and a through slot communicating with the second fitting hole, the through slot extends from the fitting hole towards a distal end of the control assembly, and the movable pin extends through the second fitting hole; and
when the movable pin is located in the locking position and the control assembly is subjected to a preset tensile force, the control assembly is movable relative to the movable pin along the through slot, so as to make the movable pin separate from the control assembly via the through slot.

9 . The hemostatic clip for an endoscope according to claim 8 , wherein a width of the movable pin is greater than that of the through slot, and when the movable pin is located in the through slot, the movable pin compresses the control assembly to cause the control assembly to generate deformation, thereby enabling the movable pin to be detached from the through slot and separated from the control assembly.

10 . The hemostatic clip for an endoscope according to claim 9 , wherein the control assembly is formed with an elongate slot communicating with a side of the second fitting hole away from the through slot, and the elongate slot extends from the fitting hole towards a proximal end of the control assembly.

11 . The hemostatic clip for an endoscope according to claim 10 , wherein the control assembly is formed with a stopper hole communicating with the elongate slot, and the stopper hole communicates with a side of the elongate slot away from the second fitting hole.

12 . The hemostatic clip for an endoscope according to claim 5 , wherein the hemostatic clip for an endoscope comprises a catheter and a locking member, the control assembly extends through a lumen of the catheter, the catheter is formed with a first connection hole, the clip holder has a second connection hole, and the locking member extends through the first connection hole and the second connection hole so as to connect the catheter and the clip holder; and
when the movable pin is located in the locking position and the control assembly is subjected to a preset tensile force, the control assembly is capable of abutting against and pushing the locking member, so as to make the locking member detach from the first connection hole and the second connection hole, and make the catheter separate from the clip holder.

Assignees

• Micro Tech Nanjing Co Ltd

Inventors

• Tang Zhi
• Li Chao

Classifications

• A61B17/1285

  for minimally invasive surgery · CPC title

• A61B17/122 Primary

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

• A61B2017/12004

  for haemostasis, for prevention of bleeding · CPC title

• A61B17/1227 Primary

  Spring clips · CPC title