Bifurcated saccule

Abstract

The invention provides a bifurcated balloon, comprising an inflatable main branch balloon, a side branch balloon, a main branch inner catheter, a side branch inner catheter, and a developing ring; the side branch balloon is arranged on the side of the main branch balloon on the wall and communicate with the main branch balloon; the main branch balloon is sheathed on the outer catheter, and the proximal and distal ends of the main branch balloon are sealed with the outer catheter, and the distal end of the side branch balloon is sealed with the inner catheter of the side branch. Reduce damage to blood vessels, simplify the implantation process of the stent, and reduce the difficulty and cost of the operation; the use of main and side branch balloons with different diameters can improve the wall-attachment performance of the balloon, avoid excessive expansion of the distal end of the stent, and reduce The risk of postoperative thrombosis and restenosis; bifurcated balloon drug loading can reduce the inflammatory response of the endothelium, shorten the healing time of the endothelium, and reduce the risk of thrombosis. At the same time, without affecting the blood flow at the bifurcation, shortening the radiation exposure time and reducing the amount of contrast agent can improve the success rate and safety of treating bifurcation lesions.

Description

technical field [0001] The invention relates to a balloon expansion catheter for percutaneous coronary angioplasty to treat coronary artery blockage, in particular to a bifurcation balloon. Background technique [0002] Nowadays, the incidence of cardiovascular disease is getting higher and higher, and it has become one of the main diseases that threaten human health. At present, more than 1.5 million patients in the world receive percutaneous coronary intervention every year. Percutaneous coronary stenting is because of its high efficiency, Minimally invasive and low medical costs have become the most important interventional therapy for coronary artery disease. Percutaneous coronary stenting uses a balloon delivery system to deliver the stent to the diseased part of the blood vessel under the guidance of medical imaging equipment, and then the balloon is inflated and expanded to expand the stent to open the narrowed or blocked part of the blood vessel, improving Blood sup...

AI Technical Summary

Problems solved by technology

Cylindrical stents with constant diameter expand bifurcated vessels, which will cause excessive expansion of the distal end of the stent, resulting in damage to the vessel wall and in-stent restenosis

At the same time, the proximal end of the stent and the opening of the bifurcation diseased blood vessel are poorly adhered to the wall, which cannot completely cover the opening, leading to the formation of thrombus

Clinically, drug-eluting stents are often used after ordinary balloon dilation, but drug-eluting stents may cause late stent thrombosis, uneven drug release, and delayed vascular endothelialization. Stents are ineffective in treating main left stem lesions, small vessel lesions, twisted lesions, and bifurcation lesions

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