Absorbable and unidirectionally compressible intestine-intestine stapler

Patent metadata

Field	Value
Publication number	US-10980541-B2
Application number	US-201716337849-A
Country	US
Kind code	B2
Filing date	Jul 17, 2017
Priority date	Sep 29, 2016
Publication date	Apr 20, 2021
Grant date	Apr 20, 2021

Abstract

An absorbable and unidirectionally compressible intestinal anastomosis device, including a first through pipe portion and a second through pipe portion respectively including large ends and small ends; the large ends are used for fixing an intestinal canal; and the small end of the second through pipe portion is inserted into the small end of the first through pipe portion. The two large ends are drawn close to each other to achieve an intestine-intestine anastomosis. The outer sides of circular rings at the ends of the small ends of the first through pipe portion and the second through pipe portion are provided with gradually-expanded elastic horn-shaped openings. The device can make two stapled intestinal canals rest relatively, thereby avoiding adjustments required in other assembling modes.

First claim

The invention claimed is:

1. An absorbable and unidirectional compressive intestinal anastomosis device, comprising a first through pipe portion and a second through pipe portion which are matched mutually and which are made of a human acceptable degradation material; wherein, the first through pipe portion can move back and forth relative to the second through pipe portion along a common axial direction thereof, and the first through pipe portion and the second through pipe portion are inseparable; the first through pipe portion and the second through pipe portion respectively comprise a large end and a small end, and the large ends are for fixing the intestinal canal, and the small end of the second through pipe portion is inserted into the small end of the first through pipe portion; the two large ends are consistent in size; when the first through pipe portion moves relative to the second through pipe portion, the two large ends are drawn close to each other to achieve an intestine-intestine and end-end anastomosis;
each of the inner side of the large end of the first through pipe portion and the inner side of the large end of the second through pipe portion is provided a circle of boss and a plurality of through grooves at intervals in a circumferential direction of the first and the second through pipe portions;
a plurality of first racks at intervals in the circumferential direction form the wall of the small end of the first through pipe portion in the axial direction, and each of the plurality of first racks penetrates through each of the plurality of through grooves of the second through pipe portion and is movable along the plurality of through grooves of the second pipe through portion;
a plurality of second racks at intervals in the circumferential direction form the wall of the small end of the second through pipe portion;
each of the plurality of first racks and the plurality of second racks has a sliding groove at each side and a tail end;
the plurality of second racks and the plurality of first racks are arranged in a staggered mode, the plurality of first racks and the plurality of second racks are matched to form a closed space;
the tail ends of the plurality of first racks are connected through a first circular ring and the tail ends of the plurality of second racks are connected through a second circular ring;
the outer side of each of the circular rings are provided with gradually-expanded elastic horn-shaped openings respectively; when the first through pipe portion closes up or opens relative to the second through pipe portion, the elastic horn-shaped openings open or are squeezed into the large ends of the first through pipe portion or the large ends of the second through pipe portion respectively.

2. An absorbable and unidirectional compressive intestinal anastomosis device according to claim 1 , wherein further comprises an annular structure which is arranged in the circumferential direction and is used for reinforcing an anastomotic site, the annular structure comprises a first arcuate component and a second arcuate component, and one end of the first arcuate component is hinged to one end of the second arcuate component, the other end of the first arcuate component is connected with the other end of the second arcuate component in a clamped mode.

3. An absorbable and unidirectional compressive intestinal anastomosis device according to claim 2 , wherein a clamping groove is provided in the other end of the first arcuate component, and the other end of the second arcuate component is provided with a buckle, the other end of the first arcuate component and the other end of the second arcuate component are connected with the buckle fastening the clamping groove in a matched mode.

4. An absorbable and unidirectional compressive intestinal stapler anastomosis device according to claim 2 , wherein the inner side of the large end of the first through pipe portion and the inner side of the large end of the second through pipe portion is provided with a plurality of tooth-shaped structures for preventing the intestinal canal from slipping off.

5. An absorbable and unidirectional compressive intestinal anastomosis device according to claim 4 , wherein the elastic horn-shaped openings are detachable.

Assignees

• Univ Zhejiang

Inventors

• Cai Xiujun
• Chen Mingyu
• Lu Chen
• Wang Yifan
• Huang Diyu
• Zhu Hepan
• Zhu Yibin
• Zhang Bin

Classifications

• A61L31/148

  Materials at least partially resorbable by the body · CPC title

• A61B2017/1132

  End-to-end connections · CPC title

• A61B2017/00004

  (bio)absorbable, (bio)resorbable or resorptive · CPC title

• A61B17/115 Primary

  Staplers for performing anastomosis, e.g. in a single operation · CPC title

• A61B17/1114 Primary

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