Self-expansion type conical blood vessel stent applied to conical blood vessel having multiple stenosis

Abstract

The invention provides a self-expansion type conical blood vessel stent applied to a conical blood vessel having multiple stenosis. The self-expansion type conical multiple stenosis stent comprises aplurality of plaque contact areas and a plurality of blood vessel contact area, wherein the plaque contact areas and the blood vessel contact areas are arranged in a staggered mode in the axial direction from the blood vessel stent, each of the plaque contact areas and each of the blood vessel contact areas respectively comprise multiple groups of wave-shaped supporting bodies, and the diameters of the adjacent wave-shaped supporting bodies are reduced in an equal ratio, so that the stent is conical in the axial direction; and each group of wave-shaped supporting bodies comprises a plurality of unit waves. Regional design is adopted, so that damage to blood vessels after stent implantation is weakened; and compared with the blood vessel contact areas, the plaque contact areas have the advantages that the length from unit wave peaks to wave troughs of the plaque contact areas is shortened, the rib thickness and the rib width are increased, and the number of unit waves is increased, so that radial supporting force is enhanced. The stents at the plaque contact areas are connected through rigid connecting bodies, so that the circumferential rigidity of the stents is enhanced. Besides,a plurality of semicircular grooves in contact with blood are formed in the inner surface of the blood vessel stent, so that the smoothness of the blood in the blood vessel stent is improved, and restenosis is prevented.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a self-expandable conical vascular stent applied to multiple stenosis of conical blood vessels. Background technique [0002] Cardiovascular and cerebrovascular disease is a disease that seriously threatens human beings, especially the common disease of middle-aged and elderly people over 50 years old. It has the characteristics of high prevalence, high disability rate and high mortality rate. The number of vascular diseases is as high as 15 million, ranking first among all causes of death. Vascular stent, as a medical device for interventional treatment of cardiovascular diseases, has the advantages of minimally invasive, efficient and fast postoperative recovery time in the treatment of vascular stenosis, so it has been widely recognized and applied in recent years. At present, there are many types of vascular stents for single stenosis, each with its own a...

AI Technical Summary

Problems solved by technology

Relevant clinical studies have also shown that the use of round straight stents for implantation in conical vessels has certain limitations and may cause vascular damage to distal vessels

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