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1. (WO2015045447) ULTRASONIC TREATMENT TOOL AND SURGICAL SYSTEM

Pub. No.:    WO/2015/045447    International Application No.:    PCT/JP2014/058303
Publication Date: Fri Apr 03 01:59:59 CEST 2015 International Filing Date: Wed Mar 26 00:59:59 CET 2014
IPC: A61B 18/00
A61B 17/34
Applicants: OLYMPUS CORPORATION
オリンパス株式会社
Inventors: YASUNAGA Shinji
安永 新二
Title: ULTRASONIC TREATMENT TOOL AND SURGICAL SYSTEM
Abstract:
The treatment tool (20) comprises a grip section (24), a power-receiving coil (29), an ultrasonic vibrator (23), a horn (22), and a treatment section (21). The treatment section (21) is inserted into the body of a subject (9) through the insertion hole (10H) of a trocar (10). When the treatment section (21) is inserted inside the body, the power-receiving coil (29) is disposed inside the power-transmitting coil (19) of the trocar (10). By inductive coupling between the power-transmitting coil (19) and the power-receiving coil (29), electric power is transmitted from the power source unit (30) to the ultrasonic vibrator (23). The vibrations generated by the ultrasonic vibrator (23) are transmitted to the treatment section (21) via the horn (22). In the treatment tool (20), the power-receiving coil (29) is disposed closer to the grip section (24) than the horn (22). Therefore, induction heating of the metal horn (22) and reduction of electric power transmission efficiency are avoided.