Degradable stent system for bifurcation vascular lesions

Abstract

The invention discloses a degradable stent system for bifurcation vascular lesions. The system comprises a degradable stent and a special-shaped balloon, wherein the degradable stent comprises a mainbody supporting part and an opening outer expanding part which is arranged on the main body supporting part and can be anchored and attached to the joint of a main blood vessel and a branch blood vessel; the special-shaped balloon comprises a balloon main part and a balloon branch part; the balloon main part extends along the main blood vessel, arranged on the inner side of the main body supporting part and used for supporting outer expanding of the main body supporting part so that the main body supporting part can be attached to the main blood vessel; the balloon branch part extends along the branch blood vessel and can support outer expanding of the opening outer expanding part. According to the degradable stent system, plastic deformation is generated through the opening outer expanding part, and the opening outer expanding part is tightly attached to the wall of the branch blood vessel, so that obstruction of a mesh structure to blood flow at the branch blood vessel is avoided, stent displacement under long-term blood flow impact is avoided, the stent posture correcting effect under complex lesions is achieved, and the accuracy of stent positioning in the operation process isimproved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a degradable stent system for vascular lesions at bifurcations. Background technique [0002] Cardiovascular and cerebrovascular diseases have become the number one cause of death in the world. At present, there are three main treatment methods for ischemic heart disease: basic treatment with drugs, surgical treatment with coronary artery bypass grafting, and interventional treatment for relieving coronary stenosis by placing coronary stents. The above-mentioned several treatment methods have achieved obvious effects in the treatment of coronary artery stenosis, but each still has some significant problems. [0003] Among them, coronary stent implantation is to deliver the stent system to the target area through puncture and intervention, and the balloon expands to release the stent, open the narrowed and diseased blood vessel, restore the blood supply, and treat ischemi...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a degradable stent system for vascular lesions at bifurcations, which can solve the problems of hindering the blood flow of branch vessels, migration of degradable stents under long-term blood flow impact, and the The problem of large deviation in release accuracy under complex lesions

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