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

Patent metadata

Field	Value
Publication number	US-11857192-B2
Application number	US-202017096257-A
Country	US
Kind code	B2
Filing date	Nov 12, 2020
Priority date	May 17, 2018
Publication date	Jan 2, 2024
Grant date	Jan 2, 2024

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 delivery system for deploying an anastomosis clamp ( 1 ), 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,
when deploying the anastomosis clamp ( 1 ), a movement of the handle ( 4 ) drives the pulling cable ( 202 ) to push off the anastomosis clamp ( 1 ), such that the anastomosis clamp ( 1 ) is released from the delivery system;
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 ).

2. The anastomosis clamp delivery system according to claim 1 , 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 ).

3. The anastomosis clamp delivery system according to claim 1 , 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 ).

4. The anastomosis clamp delivery system according to claim 3 , 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 ).

5. The anastomosis clamp delivery system according to claim 1 , 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 ).

6. The anastomosis clamp delivery system according to claim 1 , 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 ).

7. The anastomosis clamp delivery system according to claim 6 , wherein the soft connection cap ( 204 ) has a tube configuration made of an elastic material.

8. The anastomosis clamp delivery system according to claim 6 , wherein the endoscope ( 5 ) may be snap-fitted within the soft connection cap ( 204 ).

9. An anastomosis clamp used in cooperation with the anastomosis clamp delivery system according to claim 1 , wherein when the anastomosis clamp delivery system is used in cooperation with the anastomosis clamp, 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 according to claim 9 , 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 are 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.

11. The anastomosis clamp according to claim 1 , comprising:
a plurality of outer ring segments ( 101 ), round corners ( 103 ), and inner lancets ( 102 ) that are sequentially connected;
wherein an end of each of the plurality of the outer ring segments ( 101 ) is successively connected to two round corners ( 103 ) that are curved in opposite directions as so form an S-like shape between each of the outer ring segment ( 101 ) and an inner lancet ( 102 );
wherein the plurality of outer ring segments ( 101 ) forms discontinuous sections of a ring-shaped structure;
wherein each inner lancet ( 102 ) is arranged between two adjacent outer ring segments ( 101 ) with two outer end of the inner lancet ( 102 ) being respectively connected to two said S-like structures, so that these two adjacent outer ring segments ( 101 ) are axially-symmetric arranged with respect to each inner lancet ( 102 ), wherein the inner end of each inner lancet ( 102 ) has a pointed configuration.

12. The anastomosis clamp according to claim 11 ,
wherein the plurality of inner lancets ( 102 ) are central-symmetrically arranged on the ring shaped structure formed by the outer rings ( 101 ).

13. The anastomosis clamp according to claim 11 ,
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.

14. The anastomosis clamp according to claim 11 ,
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.

15. The anastomosis clamp according to claim 11 ,
Wherein the plurality of outer rings ( 101 ), round corners ( 103 ), and inner lancets ( 102 ) together form an integral structure made of a hyperelastic material.

Assignees

• Micro Tech Nanjing Co Ltd

Inventors

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

Classifications

• A61B17/1114 Primary

  of the digestive tract, e.g. bowels or oesophagus · CPC title

• A61B17/00234

  for minimally invasive surgery (A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence) · CPC title

• A61B17/122

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

• A61B17/11

  for performing anastomosis; Buttons for anastomosis · CPC title

• A61B17/15

  Guides therefor · CPC title