Double top-cover coronary bracket

A top ring and coronary artery technology, applied in the field of medical materials, can solve the problems of unfavorable and tortuous vascular system treatment, low flexibility and delivery performance of the stent, poor elastic retraction characteristics of the stent, etc., to increase drug loading, Potential for risk reduction, effect of increased metal coverage

Inactive Publication Date: 2009-06-10
天津市凯迪亚医疗器械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the design of existing stents often cannot meet the above indicators at the same time, and there are generally the following defects: 1. For stents with relatively large metal coverage, although the radial support force is improved, the flexibility and transport performance of the stent are relatively small , which is not conducive to the treatment of tortuous vasculature; 2. For stents with small metal coverage, although the flexibility of the stent has been improved, its radial support force will be weakened, and it is impossible to open the blood vessels in the lesion to allow blood to re-open. 3. The elastic retraction characteristics of existing stents are not good, which will affect the final clinical results

Method used

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  • Double top-cover coronary bracket
  • Double top-cover coronary bracket
  • Double top-cover coronary bracket

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] Example 1:

[0022] A double-top ring coronary stent, a tube-wall annular stent formed by interconnecting a plurality of metal main body units, the metal main body unit is sequentially composed of a large serpentine ring segment 4, a double-topped serpentine ring segment 1, and a small serpentine ring segment. 3 connected to each other, the large serpentine ring segment and the small serpentine ring segment of the adjacent metal main unit are connected to each other through a single top ring 5, the two tops of the double top serpentine ring segment are flush, and the double top serpentine The top turning parts of the ring segment, the large serpentine ring segment and the small serpentine ring segment are all dome segments, not arc segments, and the height of the large serpentine ring segment is greater than that of the small serpentine ring segment. The front metal main body unit is connected with a single top ring formed by a large serpentine ring segment and a small ser

Example Embodiment

[0023] Example 2:

[0024] The front metal main body unit is connected with the single top ring formed by the large serpentine ring segment and the small serpentine ring segment by connecting the top ring formed by the double top serpentine ring segment with the connecting rod 6. The connecting rod is An n-shaped straight rod with a revolving bow is made in the middle.

[0025] Others are the same as in Example 1.

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Abstract

The invention relates to a double-top ring coronary artery frame, a pipe wall ring frame is formed by metal main body units which are connected with each other, the metal main body unit is formed by a large snake-shaped ring segment, a double-top snake-shaped ring segment and a small snake-shaped ring segment which are connected with each other in turn, the neighboring large snake-shaped ring segment and the small snake-shaped ring segment of the metal main body units are connected with each other by single top rings, the front metal main body unit is connected with the rear metal main body unit through the double-top snake-shaped ring segment by using a connecting rod and the single top ring formed by the large snake-shaped ring segment and the small snake-shaped ring segment. The metal main body unit of the double-top ring coronary artery frame is composed of the large snake-shaped ring segment, the double-top snake-shaped ring segment and the small snake-shaped ring segment at interval, the connecting rod adopts structure characteristic mode of a straight rod or a n-shaped connecting rod, the flexibility of the frame can be effectively increased, the frame has small retracting performance in order that after the frame is expanded at last, the diameter of the frame can be accurately suitable for the blood vessel diameter on pathological change, the coronary artery frame of the invention has high scientificaalness.

Description

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Claims

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Application Information

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Owner 天津市凯迪亚医疗器械有限公司
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