Biodegradable stent system for branch blood vessel at bifurcation

Abstract

The invention discloses a biodegradable stent system for a branch blood vessel at a bifurcation. The biodegradable stent system for the branch blood vessel at the bifurcation comprises a biodegradablestent and a heteromorphic saccule. The biodegradable stent comprises a stent support part extended along the branch blood vessel and used for placing in the branch blood vessel; and a stent fixing part positioned at the bottom of the stent support part and used for anchoring at the connection part of a main blood vessel and the branch blood vessel. The heteromorphic saccule comprises a saccule fixing part extending along the main blood vessel and tightly adhered to the main blood vessel; and a saccule support part connected with the saccule fixing part and installed at the inner side of the stent support part, wherein the saccule support part is capable of supporting the external expansion of the stent support part, so the stent support part can be tightly adhered to the branch blood vessel. The above biodegradable stent system is capable of, through pressing the heteromorphic saccule to cause the plastic deformation of the stent fixing part so that the saccule fixing part is tightlyadhered to the main blood vessel wall, ensuring the complete cover of the biodegradable stent to the branch blood vessel lesion, preventing the stent fixing part from hindering the blood flow of the main blood vessel, and avoiding the stent displacement caused by the long-term impact of the blood flow of the branch blood vessel.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a degradable stent system used for branching blood vessels 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 t...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a degradable stent system for branching blood vessels at bifurcations to solve the problem of incomplete coverage of diseased areas, obstruction of normal blood flow in main blood vessels, and long-term blood flow impact after existing degradable stents are implanted into the human body. Migration issues under degradable scaffolds

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