Pipeline type vascular stent

A vascular stent and pipe network technology, applied in the field of medical devices, can solve the problems of large metal surface coverage and axial shortening rate, insufficient radial support force, and difficulty in achieving uniformity, and achieve good axial compliance and blood vessels. Compliance, reduced possibility of relative rotation, effect of moderate metal surface coverage

Active Publication Date: 2007-06-13
SHANGHAI KANGDELAI ENTERPRISE DEV GRP CO LTD
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  • Abstract
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Problems solved by technology

However, due to the limitations of the structure of the existing stents, it is difficult to achieve effective unity in these two aspects. Although some stents have strong supporting force after expansion, the axial flexibility is not good, and the metal surface coverage and axial The shortening rate of some stents is relatively large; although some stents have better axial flexibility, but the radial support force is insufficient, the metal surface coverage is small, and it is easy to cause vascular restenosis, so it still needs to be further improved.

Method used

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  • Pipeline type vascular stent

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Embodiment Construction

[0014] Referring to Fig. 1, the pipe network type vascular stent of the present invention is carved from a metal circular tube and includes a plurality of ring-shaped supports 1 with the same structure and arranged in the axial direction. Every two ring-shaped supports form a group. The two inner ring supports are arranged mirror-symmetrically and connected by multiple "several"-shaped connectors 2, and the groups are aligned and arranged through multiple Shape connector 3 connection.

[0015] Each ring-shaped support body 1 in the present invention is formed by a plurality of "3"-shaped structural members 11 and a plurality of ""-shaped structural members 12 alternately connected in series in waves. In two adjacent ring-shaped support bodies, The "3"-shaped structure in one ring-shaped support corresponds to the reverse "3"-shaped structure in the other ring-shaped support, and the ""-shaped structure in one ring-shaped support corresponds to the other ring-shaped support ...

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Abstract

The present invention provides a tube-net type blood vessel support. It is made up by using metal tube through an engraving process, and includes several ring supporting bodies which are identical in structure and arranged along axial direction. After having been expanded said blood vessel support not only can retain higher radial supporting force, but also has good axial flexibility and blood vessel compliance.

Description

technical field [0001] The invention relates to a medical device, in particular to a pipe-net type vascular stent suitable for the field of interventional treatment of human blood vessels. Background technique [0002] Percutaneous puncture angioplasty, referred to as PTA, is under the guidance of medical imaging equipment, using a puncture needle, a guide wire and a guide sheath to insert a balloon catheter with a tightened stent into a human blood vessel and deliver it to the blood vessel At the stenosis, with the expansion of the balloon, the stent is also stretched. After the balloon is retracted and retracted, the plastically deformed metal stent remains in place and is embedded in the blood vessel, playing the role of dilating the blood vessel. This approach leads to good long-term outcomes of the surgery. [0003] From the perspective of clinical use, an ideal vascular stent design should have the following technical indicators at the same time: sufficient radial sup...

Claims

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Application Information

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IPC IPC(8): A61F2/06A61B17/00A61M29/00A61F2/90
Inventor 张宪淼张维鑫李军生
Owner SHANGHAI KANGDELAI ENTERPRISE DEV GRP CO LTD
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