Stepped balloon dilatation vascular stent

A vascular stent and step-shaped technology, which is applied in the field of medical device manufacturing, can solve the problems of shortening the service life of the stent, that is, the service life, uneven stress distribution of the stent, damage to the wall of the tributary blood vessel, etc., and achieves improved adherence performance, uniform stress distribution, The effect of reducing the incidence

Inactive Publication Date: 2016-01-20
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the structural design of the stent in the market and clinically adopts the design with the same parameter value, that is, the structure of the vascular stent is uniform cylindrical, the expansion diameter of the stent section is the same, and the ring support body of the same shape is used, that is, the ring support body The wave height and width of the unit wave are consistent, which makes the whole stent present a consistent cylindrical shape when expanded, causing serious damage to the tributary vessel wall of the bifurcated ve

Method used

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  • Stepped balloon dilatation vascular stent
  • Stepped balloon dilatation vascular stent
  • Stepped balloon dilatation vascular stent

Examples

Experimental program
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Embodiment 1

[0032] Embodiment one: figure 1Shown is an embodiment of the stepped balloon-expandable vascular stent of the present invention: a three-step vascular stent, the vascular stent includes 3 stent segments with different expansion calibers, and the adjacent stent segments pass through the transition The area is connected, and the number of steps formed by the expansion of the stent segment is 3 steps.

[0033] The 3 bracket sections are respectively the first bracket section 27, the second bracket section 28 and the third bracket section 29; the adjacent bracket sections are connected by the transition zone connecting ribs, and the adjacent bracket sections The connection area is a transition area, the connection area between the first bracket segment 27 and the second bracket segment 28 is a first transition area 30, and the connection area between the second bracket segment 28 and the third bracket segment 29 The connection area of ​​is the second transition area 31 . Each of...

Embodiment 2

[0040] Embodiment two: figure 2 Shown is an embodiment of the stepped balloon-expandable vascular stent of the present invention: a two-stage vascular stent, the vascular stent includes two stent segments with different expansion calibers, and the stent segment formed after expansion The number of steps is two, and the adjacent bracket sections are connected by a transition zone, and the transition zone is connected by M-shaped connecting ribs 26 .

Embodiment 3

[0041] Embodiment three: image 3 Shown is an embodiment of the ladder-shaped balloon-expandable vascular stent of the present invention. The vascular stent described in this embodiment is a three-step vascular stent, and the vascular stent includes three stent segments with different expansion diameters. The number of steps formed by the stent segment after being expanded by the trapezoidal balloon is three steps, and the adjacent stent segments are connected by a transition zone, and the transition zone is connected by an S-shaped connecting rib 25 to connect the adjacent stent segments The connecting direction of the S-shaped connecting rib 25 is consistent with the axial direction of the vascular stent.

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Abstract

The invention provides a stepped balloon dilatation vascular stent. The stepped balloon dilatation vascular stent comprises N stent segments with different dilatation calibers, wherein the adjacent stent segments are connected by transition regions; each stent segment comprises a plurality of ring-shaped support bodies, and the adjacent ring-shaped support bodies are connected by connecting bars; the ring-shaped support bodies are sequentially arranged in the axial direction of the vascular stent; the adjacent ring-shaped support bodies are in mirror symmetry distribution; each ring-shaped support body comprises a plurality of sine unit waves in the same shape, and the unit waves are sequentially arranged in the circumferential direction of the vascular stent. According to the stepped balloon dilatation vascular stent, the axial flexibility and the radial rebound rate of the vascular stent are drawn into consideration by changing the dilatation calibers and the step number of the stent segments, the wave heights and widths of the unit waves and the connecting modes of the transition regions between the stent segments, so that the service life of the vascular stent is prolonged, and vascular stent adherence un-favorability, vascular stent thrombosis and other interventional postoperative complications can be prevented.

Description

technical field [0001] The invention relates to a balloon-expandable vascular stent for the treatment of carotid arteries, femoral arteries, and other coronary arterial lesion vessels with side branches and bifurcations by means of percutaneous coronary artery stent intervention in the technical field of medical equipment manufacturing, and specifically relates to a A ladder-shaped balloon-expandable vascular stent. Background technique [0002] Nowadays, the number of patients with cardiovascular and cerebrovascular diseases is increasing. The World Health Organization indicates that cardiovascular disease has become the most serious disease that endangers human life safety. Among them, the morbidity and mortality of coronary heart disease rank first among all kinds of diseases. At present, ischemic death due to extracranial carotid atherosclerotic stenosis is gradually increasing, and stent implantation has become an effective alternative to carotid endarterectomy because ...

Claims

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Application Information

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IPC IPC(8): A61F2/90A61F2/958
Inventor 申祥谢中敏纪松邓永泉
Owner JIANGSU UNIV
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