Intravascular stent applied to carotid artery

Abstract

The invention relates to an intravascular stent applied to carotid artery. The intravascular stent comprises a tubular stent body formed by butt joint of a common carotid artery stent section and an internal carotid artery stent section. The intravascular stent is characterized in that the internal carotid artery stent section is arranged to be of a first conical structure which is matched with aninternal carotid artery blood vessel of a human body in shape and extends upwards in an axial conical mode, and the area of the upper-end cross section of the first conical structure is smaller thanthat of the lower-end cross section of the first conical structure; the common carotid artery stent section is arranged to be of a second conical structure or a straight-barrel-shaped structure whichis matched with the common carotid artery blood vessel of the human body in shape and extends upwards in an axial conical mode, the upper end of the second conical structure and the lower end of the first conical structure are consistent in size and inclination, and the upper end of the straight-barrel-shaped structure and the lower end of the first conical structure are consistent in size; the tubular stent body comprises an inner-layer stent and / or an outer-layer stent; and a first mesh structure and a second mesh structure are arranged on the surface of the inner-layer stent and the surfaceof the outer-layer stent respectively, and an overlapping area exists between the first mesh structure and the second mesh structure.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a vascular stent applied to a carotid artery. Background technique [0002] The carotid artery is a large blood vessel that transports blood from the heart to the head, face, and neck, and is one of the main blood supply vessels to the brain. Carotid artery stenosis is the main risk factor and etiological basis for ischemic cerebrovascular diseases. 25% of ischemic strokes are related to carotid artery stenosis or occlusion. [0003] Carotid artery stenosis is a common disease, including carotid artery stenosis caused by congenital and acquired lesions. Such diseases will seriously affect the blood supply flow, resulting in insufficient blood supply and oxygen supply throughout the body. At present, the treatment methods for carotid artery stenosis mainly include medical treatment, carotid endarterectomy (Carotid endarterectomy, CEA) and carotid artery stent ...

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the problem that the mesh area of ​​the vascular stent in the prior art cannot cover the lesion to the greatest extent, the design of the unit structure has clinical risks, and the radial support force and the ability to resist vascular retraction still need to be further optimized, the present invention provides a A kind of vascular stent applied to carotid artery

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