Covered stent

A covered stent and covering technology, applied in stents, blood vessels, devices of human tubular structures, etc., can solve problems such as poor expansion resistance, achieve strong anti-expansion performance, and reduce the risk of stent function failure.

Active Publication Date: 2019-11-29
LIFETECH SCIENTIFIC (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a stent graft for the defect of poor expansion resistance of the stent graft in the prior art

Method used

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Embodiment Construction

[0031] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific implementations disclosed below.

[0032] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directl...

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Abstract

The invention discloses a covered stent, which comprises a bare stent and a covered structure connected to the bare stent. The covered structure is provided with a plurality of binding wires. The covered structure includes two layers of films, at least one of the binding wires is clamped between the two layers of films, and at least one other of the binding wires is located outside or inside the two films. The beneficial effect of the covered stent is that: by arranging a plurality of the binding wires on the covered structure, the plurality of the binding wires can be distributed on the outersurface of different layers of the covered structure or the inner surface of different layers of the film, the covered stent has strong anti-swelling performance, and reduces the risk of stent function failure due to expansion of the covered stent.

Description

technical field [0001] The invention relates to the technical field of interventional medical devices, in particular to a covered stent. Background technique [0002] Existing interventional covered stents include a film and a bare stent disposed on the film. The film is generally a double-layer film structure in which the intima and the adventitia are combined, and the bare stent is located between the intima and the external mold. These covered stents isolate the blood flow from the lesion through the covering, so as to eliminate the influence of blood pressure on the lesion and achieve the purpose of healing. However, after the covered stent is implanted in the body, it will expand to a certain extent under the impact of high-pressure blood flow for a long time. In severe cases, the covered stent will rupture, making the isolation function of the stent invalid. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide ...

Claims

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Application Information

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IPC IPC(8): A61F2/07
CPCA61F2/07A61F2002/075
Inventor 何里明肖本好
Owner LIFETECH SCIENTIFIC (SHENZHEN) CO LTD
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