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A kind of duodenal cannula and preparation method thereof

A duodenum and cannula technology, which is applied in the field of medical engineering, can solve the problems of long-term implantation application limitation, no anti-adhesion effect, etc., and achieves hard oxidation or corrosion, good biocompatibility, and simple and easy process. effect of operation

Inactive Publication Date: 2015-10-14
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because this kind of sleeve needs to work in the body for a long time, the structure given in the article has no anti-adhesion effect, and the sleeve that exists in the body for a long time is easy to adhere to the intestinal wall, which brings great side effects. Embedded applications are subject to more restrictions

Method used

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  • A kind of duodenal cannula and preparation method thereof
  • A kind of duodenal cannula and preparation method thereof
  • A kind of duodenal cannula and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] like figure 1 As shown, the present embodiment is processed through the following steps:

[0027] The first step is to prepare a casing with a micro-nano scale structure, and the casing is made of copper or aluminum. The micro-nano-scale structure is a micro-nano-scale cuboid structure, the bottom surface of the cuboid is a square, and its size is: the length and width are 1 micron to 10 microns, the height of the cuboid is 5 microns to 50 microns, and the distance between each cuboid is It is 1 micron-10 micron. like figure 1 As shown in a and b, 1 is the main body of the mold, and 2 is the micro-nano scale structure. in figure 1 Among them, a is the top view of the mold, and b is the side view of the mold.

[0028] In the second step, a polymer film sleeve is chemically vapor deposited on the surface of the mold.

[0029] A polymer film is deposited on the surface of the mold with micro-nano scale structure by chemical vapor deposition. 1 is a polymer film. 2 ...

Embodiment 2

[0035] like figure 2 Shown, the present embodiment is prepared through the following steps:

[0036] The first step is to prepare a casing with a micro-nano scale structure, and the casing is made of copper or aluminum. The micro-nano scale structure is a micro-nano scale cylinder structure. The radius of the bottom circle is 0.5 micron-5 micron, the height of the cylinder is 5 micron-50 micron, and the interval between each cylinder is 1 micron-10 micron, such as figure 2 As shown in a and b, 1 is the main body of the mold, and 2 is the micro-nano scale structure. in figure 2 A is the top view of the mold, figure 2 Middle b is the side view of the mould.

[0037] In the second step, a polymer film sleeve is chemically vapor deposited on the surface of the mold.

[0038] A polymer film is deposited on the surface of the mold with micro-nano scale structure by chemical vapor deposition. 1 is a polymer film. 2 is a casing mold. figure 2 Among them, c is a side view...

Embodiment 3

[0042] like image 3 Shown, the present embodiment is prepared through the following steps:

[0043] The first step is to prepare a casing with a micro-nano scale structure, and the casing is made of copper or aluminum. The micro-nano scale structure is a micro-nano scale triangular prism structure. The base of the triangular prism is an equilateral triangle, the side length is 1 micron-10 micron, the height of the triangular prism is 5 micron-50 micron, and the interval between each triangular prism is 1 micron-10 micron. like image 3 As shown in a and b, 1 is the main body of the mold, and 2 is the micro-nano scale structure. in image 3 Among them, a is the top view of the mold, and b is the side view of the mold.

[0044] In the second step, a polymer film sleeve is chemically vapor deposited on the surface of the mold.

[0045] A polymer film is deposited on the surface of the mold with micro-nano scale structure by chemical vapor deposition. . 1 is a polymer fil...

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Abstract

The invention discloses a duodenum casing pipe and a manufacturing method of the duodenum casing pipe. The duodenum casing pipe comprises an anchoring part made of nitinol and a casing pipe with a micro-nanometer type anti-sticking structure. The manufacturing method of the duodenum casing pipe comprises the following steps: step one, manufacturing a casing pipe mold with the micro-nanometer type anti-sticking structure; step two, depositing a layer of thin polymer film sleeve on the surface of the mold in the chemical vapor mode; and step three, taking the thin polymer film sleeve from the mould. According to the duodenum casing pipe and the manufacturing method of the duodenum casing pipe, the existing casing pipe can be better applied in treating morbid obesity. The manufacturing method of the duodenum casing pipe is simple in the small structure processing process and easy in operation. The duodenum casing pipe takes biocompatible polymer as the small structure material, so that the biocompatibility is favorable. Meanwhile, the duodenum casing pipe has sufficient physical and chemical stability, and is hard to oxidize or corrode, so that the duodenum casing pipe can be directly applied in the biomedicine field.

Description

technical field [0001] The invention relates to a duodenal sleeve in the field of medical engineering, in particular to a duodenal sleeve with a micro-nano scale anti-adhesion structure and a preparation method thereof. Background technique [0002] With the increasing pace of social life, morbidly obese patients tend to increase significantly. General drug treatment effect is not ideal. Through the adjustment of eating habits, only a small number of people can persist, and the effect is not ideal. Although the surgical treatment of morbid obesity is more effective, but because of the large trauma, the number of people undergoing surgery is very small. [0003] With the development of biotechnology, a new type of cannula came out. It connects the pylorus and jejunum with a cannula, so that food can go directly to the jejunum without going through the duodenum. In this way, the duodenum has no effect on food absorption, and the duodenum is a very important section of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F5/00
Inventor 刘景全梅加兵江水东康晓洋杨斌杨春生
Owner SHANGHAI JIAO TONG UNIV
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