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Medical intestinal anastomosis ring made of degradable magnesium alloy

A magnesium alloy and anastomotic ring technology, applied in the field of medical devices, can solve the problem of non-degradable intestinal anastomotic materials, achieve less tissue trauma, maintain stability, and inhibit abnormal nerve excitability

Inactive Publication Date: 2012-11-28
HARBIN MEDICAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the non-degradable problem of existing intestinal anastomotic materials, and provides a medical degradable magnesium alloy intestinal anastomotic ring

Method used

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  • Medical intestinal anastomosis ring made of degradable magnesium alloy
  • Medical intestinal anastomosis ring made of degradable magnesium alloy
  • Medical intestinal anastomosis ring made of degradable magnesium alloy

Examples

Experimental program
Comparison scheme
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specific Embodiment approach 1

[0023] Specific Embodiment 1: In this embodiment, the material of the medical degradable magnesium alloy intestinal anastomotic ring is medical degradable magnesium alloy, and the surface of the medical degradable magnesium alloy is coated with a polylactic acid-glycolic acid copolymer coating or a modified shell Glycan coating.

[0024] The medical degradable magnesium alloy intestinal anastomosis ring in this embodiment is composed of an inner ring 1 of the medical degradable magnesium alloy intestinal anastomosis ring and an outer ring 2 of the medical degradable magnesium alloy intestinal anastomosis ring.

[0025] combine figure 2 and image 3 The method of repairing and fixing the intestinal tract with a medical degradable magnesium alloy intestinal anastomotic ring is as follows:

[0026] Set the intestinal tract 3 on the inner ring 1 of the medical degradable magnesium intestinal anastomosis ring, then put the intestinal tract 4 on the outer ring 2 of the medical de...

specific Embodiment approach 2

[0027] Embodiment 2: This embodiment differs from Embodiment 1 in that the medical degradable magnesium alloy is a Mg-Ca alloy, a Mg-Sn-Mn alloy or a Mg-Sn-Mn-Zn alloy. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0028] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the weight percentage of Ca in the Mg—Ca alloy is 1%-30%. Others are the same as in the first embodiment.

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Abstract

The invention discloses a medical intestinal anastomosis ring made of a degradable magnesium alloy, and relates to the field of medical apparatus and instruments and the medical intestinal anastomosis ring is used for solving the problem that the existing intestinal anastomosis material is not degradable. The medical intestinal anastomosis ring is made of a degradable magnesium alloy, and a poly lactic-co-glycolic acid copolymer coating or modified chitosan coating is coated on the surface medical intestinal anastomosis ring. Mg<2+> in the degradable product of the medical intestinal anastomosis ring is the second important positive ion in human cells and is harmless to a human body. The medical intestinal anastomosis ring is in contact type anastomosis, avoids damage to intestinal wall by suture or metal nails, cause less tissue wounds, is minium in the tissue necrosiss degree of the whole anastomosis stomas, can be degradable after being implanted in a human body for 2-3 weeks, and has no permanent foreign body reaction, thus effectively reducing scars at the anastomosis stomas, thereby having low stenosis incidence rate of the anastomosis stomas.

Description

technical field [0001] The invention relates to the field of medical instruments. Background technique [0002] The concept of sutureless anastomosis has been around for a long time. In 1826 Denans introduced an endoluminal anastomosis device that allows the two ends of the intestinal tube to be joined together. Bonnier designed further endovascular anastomosis devices in 1885 and Murphy in 1892, respectively. The Murphy buckle consists of two metal half-rings that, when closed, compress the ends of the bowel together. The bowel is in place and heals further. The compressed bowel ischemia, and finally necrosis, releasing the metal rings into the stool. Although this anastomotic ring was widely used soon, the intestinal lumen stenosis caused by the metal ring caused early intestinal obstruction and anastomotic stenosis caused a high incidence of long-term obstruction. The stable cutting head of the biodegradable and absorbable stapler designed by Chinese patent CN2664597Y ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L31/02A61L31/10
Inventor 王海洋李珍李莉郑玉峰刘西伟李哈莉刘连新刘冰
Owner HARBIN MEDICAL UNIVERSITY
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