A y-shaped carotid stent with absorbable branches from the skeletal membrane

Abstract

The invention provides a Y-shaped carotid artery stent with absorbable branches from the stenosis, which is used for the treatment of carotid artery stenosis. On the outer wall; the membrane tube is installed between the inner network tube and the outer network tube and sleeved on the outer wall of the inner network tube, wherein the inner network tube, the outer network tube and the membrane tube all have a main body, a first branch and a For the second branch on the opposite side, one end of the main body is connected to the end of the corresponding first branch and the corresponding second branch respectively, forming an integral Y shape that matches the shape of the bifurcation structure. For placement in the common carotid artery, the corresponding first branch is used for placement in the internal carotid artery, and the corresponding second branch is for placement in the external carotid artery. Both the inner and outer mesh tubes are made of memory metal wires In the manufactured pipe with a network structure, the pore size of the inner network pipe is smaller than the pore size of the outer network pipe.

Description

Technical field [0001] The present invention relates to a carotid stent, and more particularly to a Y-coliral stent with an absorbent self-mask branch. Background technique [0002] Cerebrovascular disease is a major illness that threatens human health is only the third largest cause of cardiovascular disease and tumor. Cervical veins is the main risk factors and etiology foundations of ischemic cerebrovascular disease, and 25% ischemic stroke is related to carotid stenosis or occlude. [0003] like Figure 5 As shown, the carotid artery 1 is a "Y"-shaped bifurcation structure, including the carotid artery 2, the internal carotid artery 3, and the carotid artery 4. The blood in the carotid artery 2 flows into two bifurcated carotid artery 3 and the carotid artery 4, wherein the blood in the carotid artery 3 is mainly flowing to the brain. The carotidity is usually in the carotid artery 3, which is specifically shown that the blood vessel wall of the neck arterial 3 produces a caro...

AI Technical Summary

Problems solved by technology

However, if the pores of the small-pore network tube are too small, it will have a great blocking effect on the blood flowing from the common carotid artery to the external carotid artery. On the contrary, if the pores of the small-pore network tube are larger, its blocking effect on debris is not ideal.

Images