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LASER ANGIOPLASTY SYSTEM USING CONTACT CERAMIC TIP: STABILIZATION OF POWER AND DEVELOPMENT OF ENDOSCOPIC SYSTEM Y. Abe, K. Imanishi, T. Yonezawa, T. Chinzei *, I. Sogawa *, M. Suzukawa, K. Mabuchi, K. Imachi, A. Kouno, T. Ono, T. Tago *, K. Atsumi and I. Fujimasa Institute of Medical Electronics, Faculty of Medicine, University of Tokyo. *RCAST We have been developing laser angioplasty system using contact ceramic tip. In order to stabilize the required power for plaque ablation, ceramic coating tip was designed and developed by implanting metal at the point of the surface of ceramic tip, and the special endoscope with 7F size was designed and developed from the points of percutaneous approach and ceramic tip usage. The laser probe was designed to be separated at the part of laser fiber and able to be inserted from the top of the endoscope. The special endoscope and laser probe with ceramic coating tip were very useful for atheroma ablation inside the aorta of atherosclerotic rabbits under the visual field. The required power for plaque ablation with ceramic coating tip was 515W, and was able to be stabilized.

LASER ANGIOPLASTY SYSTEM USING CONTACT CERAMIC TIP: STABILIZATION OF POWER AND DEVELOPMENT OF ENDOSCOPEPIC SYSTEM