A balloon-expandable vascular stent for multiple stenosis of round and straight blood vessels

Abstract

The invention provides a balloon-expandable vascular stent applied to multiple stenosis of round and straight blood vessels, comprising a plurality of plaque contact areas and blood vessel contact areas; the plaque contact areas and the blood vessel contact areas are staggered along the axial direction, and the plaque contact areas It includes multiple groups of corrugated supports and rigid connectors, the blood vessel contact area includes multiple groups of corrugated supports and flexible connectors, and each area is connected by flexible connectors to improve the flexibility of the stent. The invention adopts a sub-regional design to reduce the damage to blood vessels after stent implantation, and compared with the blood vessel contact area, the length of the unit wave peak to the trough in the plaque contact area is shortened, and the rib thickness and rib width are increased. And the number of unit waves is increased to enhance the radial support force. In addition, the stents in the plaque contact area are connected by rigid connectors, which enhances the circumferential rigidity of the stents. At the same time, there are several semicircular grooves in contact with blood on the inner surface of the vascular stent, so as to improve the blood flow in the vascular stent and prevent the occurrence of restenosis.

Description

technical field [0001] The invention belongs to the field of medical devices, in particular to a balloon-expandable vascular stent used for multiple stenosis of round and straight blood vessels. Background technique [0002] Cardiovascular and cerebrovascular disease is a disease that seriously threatens human beings, especially the common diseases of middle-aged and elderly people over 50 years old. The number of vascular diseases is as high as 15 million people, ranking first among all causes of death. As a medical device for interventional treatment of cardiovascular disease, vascular stent has the advantages of minimally invasive, high efficiency and fast postoperative recovery time in the treatment of vascular stenosis. Therefore, it has been widely recognized and applied in recent years. At present, in the face of atherosclerosis and the number of plaques is one, there are various types of related vascular stents, each with its own advantages and disadvantages. In th...

AI Technical Summary

Problems solved by technology

In the face of multiple stenosis, that is, when the number of plaques is two or more, clinically, multiple stents are often implanted, which will increase the difficulty of surgery and increase the damage to blood vessels to a certain extent.

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