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Laser Hot Balloon Catheter For Stenotic Coronary Diseases

We developed a hot balloon catheter for stenotic coronary diseases using Ar laser as a heat source. A circulation design of contrast medium in the balloon made it possible to attain rapid temperature elevation and temperature uniformity. The silica fiber power delivery of Ar laser offered flexibility and insulation for the balloon catheter. In vitro and acute in vivo experiment revealed the efficacy of this hot balloon.