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Medical organosilicone material for pancreas and intestine anastomosis instrument and preparation method thereof

A stapler and silicon pancreatic-intestinal technology, applied in the field of medical organic silicon pancreatic-intestinal stapler materials and its preparation, can solve the problems of difficult surgery and easy occurrence of pancreatic fistula

Inactive Publication Date: 2015-04-01
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the purposes of the present invention is to provide a medical organosilicon pancreatic-intestinal stapler material with high elasticity and tear resistance in order to overcome the medical difficulty of pancreaticojejunostomy in patients with pancreatic cancer and the postoperative pancreatic fistula.

Method used

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  • Medical organosilicone material for pancreas and intestine anastomosis instrument and preparation method thereof
  • Medical organosilicone material for pancreas and intestine anastomosis instrument and preparation method thereof
  • Medical organosilicone material for pancreas and intestine anastomosis instrument and preparation method thereof

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preparation example Construction

[0046] The preparation method of the medical organosilicon pancreatic-intestinal stapler material of the present invention comprises the following steps:

[0047] (1) After mixing the modifier with a mass ratio of 1:1 with absolute ethanol, add it into the flask together with the reinforcing agent, stir evenly in a water bath at 70-80°C, take it out, and dry it in a vacuum oven ;

[0048] Among them, the modified reinforcing agent is ultrafine mineral powder, fumed white carbon black or nano-calcium carbonate powder after the modifier is mixed with absolute ethanol and dried; the modifier is the silane coupling agent KH- 550 (γ-aminopropyltriethoxysilane) or hydroxyl-terminated linear polydimethylsiloxane.

[0049] (2) Add 10-30% of the modified reinforcing agent and 3-5% of the structure control agent into the 60-80% of the silicone rubber matrix for mixing, and then add 2-4% of the vulcanizing agent, 0.5-1.5% of the The joint agent is mixed evenly, and the mixing time and ...

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Abstract

The invention discloses a medical organosilicone material for a pancreas and intestine anastomosis instrument and a preparation method thereof. The medical organosilicone material is prepared from 60-80% of a silicone rubber matrix, 3-5% of a structure controlling agent, 2-4% of a vulcanizing agent, 0.5-1.5% of a crosslinking agent, 0.05-0.1% of a catalyst and 10-30% of a reinforcing agent. The preparation method of the medical organosilicone material comprises the following steps: (1) preparing rubber master batch; (2) mixing; (3) standing a rubber compound; (4) vulcanizing in two stages; and (5) increasing temperature gradually, and treating to obtain the medical organosilicone elastomer material. The invention further discloses the pancreas and intestine anastomosis instrument produced from the medical organosilicone elastomer material. The pancreas and intestine anastomosis instrument is in a strip shape, and titanium screws are uniformly distributed on the pancreas and intestine anastomosis instrument. The medical organosilicone elastomer material has the characteristics of high ductility, high tear strength, high flexibility and excellent medium resistance, is non-toxic physiologically and can be widely applied to the medical field.

Description

technical field [0001] The invention relates to a medical organosilicon elastomer pancreatic-intestinal stapler material, in particular to a medical organosilicon pancreatic-intestinal stapler material with better elasticity and excellent mechanical properties and a preparation method thereof. Background technique [0002] Since Wipple pioneered pancreaticoduodenectomy in 1935, after nearly 80 years of development, there have been more than 50 pancreaticojejunostomy methods recorded in the literature. Clinically, the following three methods of pancreaticojejunostomy are mainly used: sleeve-type end-to-end pancreaticojejunostomy, pancreatic duct-to-mucosal end-to-side pancreaticojejunostomy, and bundled pancreaticojejunostomy. [0003] Bundled pancreaticojejunostomy is an end-to-end sleeve-type anastomosis, which is an improved anastomosis method, but the actual operation is quite troublesome, and when the anastomotic site is tied up with a thick thread at the end, the pancre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L31/06A61L31/02B29C35/02B29C71/00
Inventor 李颖朱睿颖
Owner XIAN UNIV OF SCI & TECH
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