Intravascular stent

Abstract

The invention relates to the field of medical instruments, in particular to an intravascular stent for treating cardiovascular and cerebrovascular diseases. In order to solve the problem that stent rings of an existing intravascular stent are prone to deformation, overturning and twisting, the intravascular stent is provided and comprises stent rings and a linking rod, each stent ring comprises asupporting rod section and an arc-shaped crown, and each supporting rod section and the corresponding crown are connected with each other to form a wavy ring structure; and two ends of the linking rodare connected with the crowns of the two adjacent stent rings, and the linking rod is of an arc-shaped structure. The intravascular stent is attached to the inner wall of a blood vessel after being placed into the blood vessel of a patient, so that the blood vessel loss rate is effectively reduced, and the problems of intravascular restenosis and intravascular acute thrombosis after the intravascular stent is implanted are reduced; and the crowns at the corresponding positions on the two adjacent stent rings are connected with each other through the linking rod which is of the arc-shaped structure, and when the intravascular stent is expanded, the circumstance that the linking rod deforms, overturns and twists, and consequently the wall attaching effect of the intravascular stent is affected can be avoided.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a vascular stent for treating cardiovascular and cerebrovascular diseases. Background technique [0002] At present, in the treatment of cardiovascular and cerebrovascular diseases, vascular stents are mostly placed in the blood vessels of the diseased site. Commonly used vascular stents are mostly mesh structures formed by laser cutting of cobalt-chromium alloys or stainless steel pipes with an outer diameter of about 1.8mm, and the length of the stent rods in the mesh structure is usually between 1.0-1.5mm, and the width of the stent rods is between 1.0-1.5mm. The thickness of the stent rod is about 0.1mm, and the thickness of the stent rod is about 0.08mm; after surface treatment such as physical polishing, a drug-loaded coating is sprayed on the surface of the mesh structure, and it can be implanted into the patient's diseased blood vessel. Although this type of vascular stent...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that existing vascular stents are prone to deformation and twisting, the present invention proposes a vascular stent, which includes a stent ring and a connecting rod, and the stent ring includes a rod segment and an arc-shaped crown. The strut segment and the crown are connected to form a wavy ring structure, and the angle between the two strut segments connected to the two ends of the crown is less than 90°; the two ends of the link rod It is connected with the crowns of two adjacent stent rings, and the link rod is an arc-shaped structure

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