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Degradable woven stent, weaving device and weaving method

A monofilament and grid technology, applied in stents, medical science, prostheses, etc., can solve the problems of inability to weave cone-shaped and bell-mouth stents, and achieve good biocompatibility, reduce injuries, and the overall structure is simple

Pending Publication Date: 2020-11-13
苏州市美新迪斯医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing weaving methods are suitable for weaving straight stents, but not for weaving tapered and flared stents

Method used

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  • Degradable woven stent, weaving device and weaving method
  • Degradable woven stent, weaving device and weaving method
  • Degradable woven stent, weaving device and weaving method

Examples

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Embodiment 1

[0026] Such as Figure 1-7 As shown, a degradable braided stent is a tapered grid-shaped stent with a bell-mouth structure 2 woven from the degradable monofilament 1, and the head and tail ends have no open ends. Adjustable, the braided stent is sheathed with a suitable balloon. The balloon can be expanded or contracted. The braided stent is expanded by balloon expansion to prop up the diseased area. After the balloon is contracted, it can be separated from the braided stent and the ball can be withdrawn. The capsule and braided stent are reserved in the lesion area.

[0027] The braided stent is composed of several closely arranged diamond-shaped grids 3. The obtuse angles of the diamond-shaped grid 3 vary from bottom to top. The obtuse angles of the diamond-shaped grid 3 are 100-160°, and the edge arc length of the diamond grid 3 is 5- 9mm.

[0028] The monofilament 1 is magnesium metal wire or pure magnesium wire, with a diameter of 0.1-1 mm.

[0029] The present invention also...

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Abstract

The invention discloses a degradable woven stent, a weaving device and a weaving method. The degradable woven stent is a conical latticed support that is formed by braiding degradable monofilaments and has the head with a horn mouth structure; the head end and the tail end of the degradable woven stent are not provided with open ends, the outer diameter of the woven stent is adjustable, a balloonmatched with the woven stent is arranged in the woven stent in a sleeved mode, the balloon can be expanded or contracted, and the woven stent expands in a balloon expansion mode and supports a diseased region. According to the degradable woven stent, the weaving device and the weaving method, the braided stent is obtained by a braiding device according to a braiding method; the stent is used for treating diseases such as nasosinusitis; with surgery by minimally invasive intervention, the woven stent and the corresponding balloon are implanted into a focus part together; the woven stent expandsin a balloon expansion mode and takes out the balloon, the woven stent is reserved in a lesion area and supports a lesion part, the cavity is kept unblocked, the woven stent is degradable, can be easily absorbed by a human body, and does not need to be taken out for the second time to reduce harm to the human body. The stent is simple in process, convenient to use and low in cost.

Description

Technical field [0001] The invention belongs to the technical field of braided stents, and specifically relates to a degradable braided stent, a braiding device and a braiding method. Background technique [0002] Existing braided stents are mostly non-degradable materials, and nasal stents, if they are not degradable, need to be taken out within a certain period of time after surgery, which increases the surgical steps and the degree of patient injury. Therefore, nasal stents made of degradable materials are used. The stent has become the general trend. [0003] Most of the existing braided stents are straight-shaped, and the inner cavity structure of the nasal cavity is mostly an irregular tapered structure, so the tapered stent structure is more in line with the human body structure. The existing braiding methods are mostly suitable for braiding straight stents, but cannot braid conical and bell-mouth stents. Therefore, the development of a tapered stent structure and its weav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/90A61F2/958A61F2/94
CPCA61F2/90A61F2/958A61F2/94A61F2210/0004
Inventor 杨健
Owner 苏州市美新迪斯医疗科技有限公司
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