ULTRASONIC ENDOSCOPIC CATHETER USING FLEXIBLE ULTRASONIC CONDUCTION LINE

摘要

PROBLEM TO BE SOLVED: To solve a problem as to a notable attenuation of ultrasonic waves due to the lack of flexibility when quartz is used for an ultrasonic conduction like or when water or the like is adhered thereto. SOLUTION: This flexible ultrasonic conducting line has a bused quartz rod 1 whose surface is provided with an extremely thin carbon or metal inner protective layer 2, the outer side of which is covered with a protective layer 4 via an air layer 3 filled with air or impedance material.