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Degradable magnesium alloy drug eluting stent

A technology for eluting stents and magnesium alloys, applied in the field of medical devices, can solve problems such as reduced bearing capacity and loss of supporting force, and achieve the effects of improving flexibility, increasing flexibility, and facilitating observation

Pending Publication Date: 2022-01-25
SINO MEDICAL SCI TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects in the prior art that the bearing capacity of each part of the stent is reduced due to uneven force during the expansion process or even lose the supporting force prematurely, thereby providing a degradable magnesium alloy crown eluting stent

Method used

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Embodiment Construction

[0028] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...

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Abstract

The invention provides a degradable magnesium alloy drug eluting stent, and belongs to the technical field of medical instruments. The degradable magnesium alloy drug eluting stent comprises a plurality of supporting rings arranged in a spacing manner, and every two adjacent supporting rings are connected through a plurality of connecting keys; the supporting rings are of a wave-shaped structure formed by sequentially connecting a plurality of stent bridge ribs in a mirror image mode, two ends of each stent bridge rib are respectively provided with an arc-shaped section protruding towards the outer side, and the widths of the stent bridge ribs are gradually decreased from the two ends to the middle. The widths of the stent bridge ribs are gradually reduced from the two ends to the middle, so that the strength of the two ends is larger than that of the middle, the situation that the degradation rate is accelerated due to damage to the two ends due to stress concentration can be balanced, and the defect that the whole stent loses the supporting capacity too early due to uneven degradation is overcome.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a degradable magnesium alloy drug-eluting stent. Background technique [0002] Drug-eluting stents are also called drug-releasing stents, which carry drugs through the polymer coated on the surface of the metal stent; when the stent is implanted in the intravascular lesion, the drug is released from the polymer coating in a controlled manner by elution To the blood vessel wall tissue to exert a biological effect, thereby inhibiting the formation of atheromatous plaque in the blood vessel and improving the degree of vascular stenosis; when the drug release in the coating is completed, the stent begins to slowly degrade, and finally the stent is completely degraded, and the blood vessel returns to normal. [0003] There are many kinds of magnesium alloy stent structures currently on the market. During the expansion process of most stents, the support ring is prone to stress...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/915
CPCA61F2/915A61F2002/91575A61F2210/0004A61F2250/0067
Inventor 王欢温少鹏李中华
Owner SINO MEDICAL SCI TECH INC
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