Angioplasty におけるレーザー法とウォータージェット法の比較検討、基礎的観点より

抄録

We have been studied waterjet percutaneous transluminal angioplasty(PTA). This report describe a comparison of the waterjet and the conventional laser method in PTA using the modeling samples. Experimental facility consisted of roller pump which was developed by us for operations and a set of catheter. Catheter is pressure resisting and has the nozzle at the distal. Experiment was carried out with the coronary artery of the pig heart and the aorta of rabbit resected from each animals. Target lesion as the thrombus was made by agar-agar or blood coagula. Operative procedure was monitored in the video display which was connected to the small fiber scope in the modeling samples. Waterjet make a fine hole on the surface of the thrombus at first and penetrated through the whole thrombus. Then washed out the debris and remove the surrounding resting thrombus. This first trial showed that waterjet angioplasty have many advantages over the laser method.