1991 Fiscal Year Final Research Report Summary

A Developmental Study of Waterjet Angioplasty System.

Research Project

Project/Area Number	02557047
Research Category	Grant-in-Aid for Developmental Scientific Research (B)
Allocation Type	Single-year Grants
Research Field	General surgery
Research Institution	Tokyo University of Agriculture and Technology
Principal Investigator	NISHISAKA Tsuyoshi Tohoku University, School of Medicine, Associate Professor, 保健管理センター, 教授 (40101084)
Co-Investigator(Kenkyū-buntansha)	KUSAKABE Masahiro Sony Corporation, メディカル事業開発室, 次長 TAGUCHI Yoshio Tohoku University, School of Medicine, Associate Professor, 医学部, 助教授 (70004885)
Project Period (FY)	1990 – 1991
Keywords	Waterjet / angioplasty
Research Abstract	This report described a developmental study of the percutaneous transluminal angioplasty system using the waterjet instead of the laser. The system consisted of planger pump and a catheter. Catheter is pressure durable and has the nozzle at the distal tip. Experiment was carried out with the aorta of rabbit Target lesion as the thrombus was made by blood coagulation. Operative procedure was monitored in the video display using the fine fiberscope. Waterjet make a fine hole on the thrombus surface at first and penetrated through the whole thrombus. Then washed out the debris and remove others of the surroundings vessels. This experiment showed that waterjet angioplasty have many advantages over the laser method.