Self-service anastomosis clamp for digestive tract and delivery system thereof

Patent metadata

Field	Value
Publication number	US-2021059677-A1
Application number	US-202017096257-A
Country	US
Kind code	A1
Filing date	Nov 12, 2020
Priority date	May 17, 2018
Publication date	Mar 4, 2021
Grant date	—

Abstract

An anastomosis clamp (1) and a delivery system thereof, where the anastomosis clamp (1) includes inner lancets (102, 602), round corners (103, 603), and outer rings (101, 601) that are sequentially connected; the delivery system may be used in cooperation with the anastomosis clamp (1); and the delivery system includes a distal end (2), a middle flexible sheath (3), and a handle (4).

First claim

What is claimed is:

1 . An anastomosis clamp, comprising:
a plurality of outer rings, round corners, and inner lancets that are sequentially connected, with the whole connection structure being central symmetric; wherein the plurality of outer rings is spaced apart and are discontinuous, with adjacent discontinuous outer rings being connected via the round corners; wherein each round corner is provided with an inner lancet that is pointedly configured; wherein in a direction from the outer ring towards a center point of the symmetric connection structure, two round corners configured to curve in opposite directions are connected to form an S-like shape that connects the inner lancet to the outer ring; and wherein in the obtained connection structure, arc transitions are formed between the outer rings and the round corners.

2 . An anastomosis clamp delivery system for the anastomosis clamp according to claim 1 , wherein the anastomosis clamp delivery system is used in cooperation with the anastomosis clamp.

3 . The anastomosis clamp delivery system according to claim 2 ,
wherein the anastomosis clamp delivery system comprises a distal end, a middle flexible sheath, and a handle; wherein the distal end comprises a pulling cable, a transparent cap, and a soft connection cap; wherein the distal end of the soft connection cap is connected to the transparent cap, and the proximal end thereof is configured to be connectable with an endoscope; wherein the pulling cable passes through the transparent cap and is connected to the handle via the middle flexible sheath; and wherein the anastomosis clamp may be assembled within the transparent cap, with the anastomosis clamp being pressed against the pulling cable, so that the anastomosis clamp to be released is in its cylindrical configuration.

4 . An anastomosis clamp, comprising:
a plurality of outer rings ( 101 ), round corners ( 103 ), and inner lancets ( 102 ); wherein an end of the outer ring ( 101 ) is successively connected to two round corners ( 103 ) that are curved in opposite directions as so form an S-like shape between the outer ring ( 101 ) and the inner lancet ( 102 ); wherein the plurality of outer rings ( 101 ) forms a discontinuous ring shape; wherein one end of the inner lancet ( 102 ) is connected to two said S-like structures, and is arranged between two adjacent outer rings ( 101 ), so that these two adjacent outer rings ( 101 ) are axially-symmetric arranged with respect to the inner lancet ( 102 ), wherein the other end of the inner lancet ( 102 ) has a pointed configuration.

5 . The anastomosis clamp according to claim 4 ,
wherein the plurality of inner lancets ( 102 ) are central-symmetrically arranged on the ring shaped structure formed by the outer rings ( 101 ).

6 . The anastomosis clamp according to claim 4 ,
wherein the plurality of outer rings ( 101 ) are separately arranged by the round corners ( 103 ); and wherein the plurality of outer rings ( 101 ) together form a dis-continuous circular ring structure or a dis-continuous polygon structure.

7 . The anastomosis clamp according to claim 4 ,
wherein the inner lancet ( 102 ) comprises a plurality of sharp corners that are axial-symmetrically arranged at both sides with respect to the tip of the inner lancet ( 102 ), so as to aid a piercing and clamping of tissues that need to be clamped.

8 . The anastomosis clamp according to claim 4 ,
Wherein the plurality of outer rings ( 101 ), round corners ( 103 ), and inner lancets ( 102 ) together form an integral structure made of a hyperelastic material.

9 . An anastomosis clamp delivery system for deploying the anastomosis clamp according to claim 4 , comprising a distal end ( 2 ), a middle flexible sheath ( 3 ), and a handle ( 4 ),
wherein the distal end ( 2 ) comprises a pulling cable ( 202 ) and a transparent cap ( 203 ), and the pulling cable ( 202 ) passes through the transparent cap ( 203 ) and is connected to the handle ( 4 ) via the middle flexible sheath ( 3 ); and wherein the anastomosis clamp ( 1 ) is provided within the transparent cap ( 203 ), with the anastomosis clamp ( 1 ) being pressed against the pulling cable ( 202 ), so that the anastomosis clamp ( 1 ) to be released, being confined by the transparent cap ( 203 ), is in its cylindrical configuration.

10 . The anastomosis clamp delivery system according to claim 9 , wherein the distal end ( 2 ) further comprises a thrust ring ( 201 ); wherein
the thrust ring ( 201 ) is placed in the transparent cap ( 203 ); the pulling cable ( 202 ) passes in a loop way and connects the thrust ring ( 201 ) and the transparent cap ( 203 ); the pulling cable ( 202 ) that passes the thrust ring ( 201 ) and the transparent cap ( 203 ) is connected to the handle ( 4 ) via the middle flexible sheath ( 3 ); an axial length of the thrust ring ( 201 ) is smaller than that of the transparent cap ( 203 ); and the dis-continuous ring formed by the outer rings of the anastomosis clamp ( 1 ) abuts against the thrust ring ( 201 ).

11 . The anastomosis clamp delivery system according to claim 10 , wherein the pulling cable ( 202 ) sequentially passes through the thrust ring ( 201 ) and the transparent cap ( 203 ), and forms an Ω-like loop structure between the thrust ring ( 201 ) and the transparent cap ( 203 ).

12 . The anastomosis clamp delivery system according to claim 10 , wherein the transparent cap ( 203 ) has a double-layered structure provided with a first transparent cap holes ( 2031 ), a second transparent cap holes ( 2032 ), and a connection hole ( 2034 ).

13 . The anastomosis clamp delivery system according to claim 12 , wherein
one end of the pulling cable ( 202 ) threads through two second transparent cap holes ( 2032 ) provided at one side of the transparent cap ( 203 ), the other end of the pulling cable ( 202 ) threads through two first transparent cap holes ( 2031 ) provided at the respective other side of the transparent cap ( 203 ), and the two ends of the pulling cable ( 202 ) are joined together, and are connected to the handle ( 4 ) via the middle flexible sheath ( 3 ).

14 . The anastomosis clamp delivery system according to claim 10 , wherein the anastomosis clamp ( 1 ) is sleeved on an inner side of the transparent cap ( 203 ), such that the dis-continuous ring formed by the outer rings of the anastomosis clamp ( 1 ) abuts against the thrust ring ( 201 ), and a tip end of the inner lancets of the anastomosis clamp ( 1 ) does not exceed the distal end portion of the transparent cap ( 203 ).

15 . The anastomosis clamp delivery system according to claim 9 , wherein the distal end ( 2 ) further comprises a soft connection cap ( 204 ); wherein
one end of the soft connection cap ( 204 ) is connected to the transparent cap ( 203 ), and the other end is configured to be connectable with an endoscope ( 5 ).

16 . The anastomosis clamp delivery system according to claim 15 , wherein the soft connection cap ( 204 ) has a tube configuration made of an elastic material.

17 . The anastomosis clamp delivery system according to claim 15 , wherein the endoscope ( 5 ) may be snap-fitted within the soft connection cap ( 204 ).

Assignees

• Micro Tech Nanjing Co Ltd

Inventors

• Jin Hongyan
• Shen Zhenghua
• Qiu Weiqin
• Yu Zhou
• Tang Zhi

Classifications

• A61B2017/00597

  Implements comprising a membrane · CPC title

• A61B2017/0061

  Implements located only on one side of the opening · CPC title

• A61B2017/00623

  Introducing or retrieving devices therefor · CPC title

• A61B2017/00668

  the implement being a tack or a staple · CPC title

• A61B17/0057

  Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect (sutures A61B17/04; closing rectum or urethra near body surface A61F2/0009) · CPC title