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Super compliable recyclable film-covered subsection support and manufacturing method thereof

A compliance and coating technology, applied in the direction of stents, human tubular structure devices, blood vessels, etc., can solve the problems of not being able to fit the human body well, strong foreign body sensation, and lack of compliance

Active Publication Date: 2015-02-25
MICRO TECH (NANJING) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The support part of the stent manufactured in this way is bound by the membrane or the membrane tube, has no compliance, and cannot fit the human body well when the tissue at the placement position bends or the tissue wriggles, and the foreign body sensation is strong

Method used

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  • Super compliable recyclable film-covered subsection support and manufacturing method thereof

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preparation example Construction

[0027] The invention also discloses a preparation method of the bracket, which comprises the following steps:

[0028] First insert the cup openings at both ends of the stent body into the corresponding positions of the mantle;

[0029] Apply glue to the cup openings at both ends of the mantle and the bracket body, and fix them by high-temperature vulcanization;

[0030] Insert the segmented parts of more than two connected segments into the mantle;

[0031] Silk threads are used to connect more than two segmental parts to the cup openings at both ends of the bracket body.

[0032] Putting the inner mantle into the stent body, coating the points on the outer wall of the inner mantle with glue, and fixing the stent body and the inner mantle.

[0033] More than two segments of the stent body are impregnated with a liquid polymer material to form a covering film, and then placed in the mantle.

Embodiment 1

[0035] This embodiment discloses a super-compliant recyclable film-coated segmented stent, which includes the stent cups 1 at both ends and the stent body 2 composed of two or more segmented parts 4 connecting the stent cups 1 at both ends, The inner diameter of the cup mouth part 1 is larger than the inner diameter of the segmented part 4, and the outer part of the stent body 2 is nested with a layer of independent mantle 3 with a mutual movable gap with the segmented part 4; between the segmented parts 4 Connected by wire 5. The inner diameter of the mantle 3 located at the cup mouth portion 1 of both ends of the stent is greater than the inner diameter located at the subsection 4 . Both sides of the mantle 3 exceed the cup opening 1 of the stent, and the diameter of the protruding part is smaller than the diameter of the cup opening 1 of the stent. The thread 5 is a surgical suture.

[0036] The preparation method of the stent of this embodiment comprises the following st...

Embodiment 2

[0042] This embodiment discloses a super-compliant recyclable film-coated segmented stent, which includes the stent cups at both ends and the stent body composed of more than two sections connecting the stent cups at both ends. The inner diameter of the part is larger than the inner diameter of the segmented parts, and an independent outer mantle is nested outside the stent body and has a mutual movable gap with the segmented parts; the segmented parts are connected by silk threads. The inner diameter of the mantle located at the cup openings of the stents at both ends is greater than the inner diameter located at the subsections. The stent body is provided with a layer of independent inner mantle which has a mutual movable gap with the segmented part. Both sides of the mantle exceed the cup mouth of the stent, and the diameter of the excess part is smaller than the diameter of the cup mouth of the stent. More than two segments of the stent body are impregnated with liquid po...

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Abstract

The invention discloses a super compliable recyclable film-covered subsection support which comprises support cup rim portions at the two ends and a support body. The support body is connected with the support cup rim portions at the two ends and is composed of two or more subsection portions. The inner diameter of each cup rim portion is larger than that of each subsection portion. A layer of independent outer sleeving film is arranged on the exterior of the support body in a nested mode, and a mutual motion gap exists between the subsection portions and the outer sleeving film. The subsection portions are connected through an operation line. The invention further discloses a manufacturing method of the super compliable recyclable film-covered subsection support. The manufacturing method comprises the steps that the cup rim portions at the two ends of the support body are embedded into the corresponding positions of the outer sleeving film; a high temperature vulcanization way is adopted to fix the outer sleeving film and the cup rim portions at the two ends of the support body; the connected subsection portions are placed into the outer sleeving film; the operation line is adopted for connecting the subsection portions with the cup rim portions at the two ends of the support body.

Description

technical field [0001] The invention relates to a stent placed in a human body, in particular to a super-compliant recyclable film-covered segmental stent and a preparation method thereof. Background technique [0002] The lumen in the human body is caused by stenosis or obstruction due to various reasons and lesions. At present, a common method is to implant a metal stent at the stenosis and obstruction site to ensure the patency of the lumen. [0003] The current stents include bare metal stents and covered stents. The film-covering processing method of covered stents is usually by immersing the whole stent in a polymer material liquid and casting a film on the wall. Alternatively, after the polymer film material is attached to the surface of the stent, the whole stent is heated, and the whole film is attached to the surface of the stent. The supporting part of the stent manufactured in this way is bound by the membrane or the membrane tube, has no compliance, and cannot ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/07
Inventor 冷德嵘高小龙李玉茜陈晓丹韦建宇李常青胡洁
Owner MICRO TECH (NANJING) CO LTD
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