Carotid artery stent system

Abstract

The invention discloses intra-arterial medical equipment, namely a carotid artery stent system, which belongs to the field of medical apparatus and instruments. The carotid artery stent system comprises a carotid artery stent and a conveyor, wherein the carotid artery stent is implanted into a pathological blood vessel spot through the conveyor; the carotid artery stent is precompressed into an outer sheath of the conveyor, and is released to a pathological region through withdrawing the conveyor. The carotid artery stent system is characterized in that the carotid artery stent is a self-expansion laser-carved nickel-titanium superelastic alloy stent, and a stent release condition is of a mesh cylinder structure composed of multiple V unit structures, and opposite V units form a diamond mesh, and the stent of the mesh cylinder structure consists of three sections, wherein every three diamond meshes of big mesh sections at the two ends have a cross structure, and every two diamond meshes of small mesh sections in the middle have a cross structure, and the stent shrinks in a peak-to-valley manner when being bent; the top end of the conveyor is of a biconical head end shape. Compared with the prior art, the stent has the advantages of more excellent blood vessel adherence performance and flexibility, good non-deformability and good durability and the like by utilizing the design characteristics of the stent itself.

Description

technical field [0001] The invention relates to an arterial interventional medical device in the field of medical devices, and a carotid artery stent system. Background technique [0002] Cerebrovascular disease is a major disease that threatens human health today, and it is the third leading cause of death after cardiovascular diseases and tumors. Carotid artery stenosis is the main risk factor and etiological basis for ischemic cerebrovascular disease, and 25% of ischemic strokes are related to carotid artery stenosis or occlusion. [0003] Carotid artery stenosis is a common disease. There are both congenital and pathological carotid artery stenosis. Such diseases will seriously affect the blood supply flow, resulting in insufficient blood supply and oxygen supply throughout the body. At present, the treatment of carotid artery stenosis mainly includes medical treatment, carotid endarterectomy (Carotidendarterectomy, CEA) and carotid artery stenting (Carotidangioplastyan...

AI Technical Summary

Problems solved by technology

However, since the overall braided stent is mainly a type of stent made of cobalt-based alloy and tantalum spoon metal, the shortening rate of this type of stent is relatively high, generally as high as 40%-55%. The precise positioning of the stent brings certain difficulties, and also causes long-term displacement and falling off of the stent

Due to the limitations of the braiding technology, when the stent is twisted and bent, it is easy to form overlapping and interlacing, which affects the tight fit between the stent and the vessel wall, especially when passing through a vessel with a large diameter

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