Cardiovascular Diseases Clinical Trial
Official title:
Clinical Efficacy of Stent-balloon-stent (SBS) Technique in the Treatment of Coronary Bifurcation Lesions
The treatment of coronary bifurcation lesions continue to remain challenges. Due to the special hemodynamics caused by the special anatomical structure of the coronary bifurcation, it is easy to cause vascular crest displacement and plaque formation. The existing single-stent strategy and double-stent strategy are easy to cause vascular crest offset, stent accumulation, in-stent thrombosis, in-stent restenosis and other poor long-term prognosis. Stent-balloon-stent (Stent-balloon-stent, SBS) technique enables the guide wire to enter the side branch from the mesh at the distal end of the main vascular stent, and the drug balloon is used to dilate the opening of the side branch, so that the opening area of the side branch is more than 5mm².The SBS technique reduces the risk of branch vascular dissection, occlusion, snow shoveling phenomenon, maintain the original state of bifurcated blood vessels to the greatest extent, should have a good impact on the long-term prognosis of patients with coronary bifurcation lesions (CBL). The purpose of this study is to explore the feasibility, safety and effectiveness of SBS technique.
This is a study to evaluate the application of stent-balloon-stent (Stent-balloon-stent, SBS) in complex bifurcation lesions. 1-2mm from the side branch (SB) opening, the stent was implanted in the side branch, and then the stent was implanted in the main vessel (MV).The guide wire enters the side branch from the mesh at the distal end of the main vascular stent, and the drug balloon is used to dilate the opening of the side branch, so that the opening area of the side branch is more than 5mm².The patients were examined by coronary angiography before operation and 6-12 months after operation, and the related data such as stenosis rate and minimum lumen diameter of diseased vessels were recorded. The incidence of target vessel failure (TLF) 6-12 months later, including cardiogenic death, target vessel myocardial infarction and clinically driven target vessel revascularization, was taken as the main clinical end point. The corresponding data of the patients before and after operation were obtained, and the clinical efficacy was compared with the existing double stent strategy. ;
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