TREATMENT INSTRUMENT USING ULTRASONIC VIBRATIONS

摘要

In a treatment instrument, a load force center of a load force, which is a sum of gravity acting on the treatment instrument and an external force caused by a connected cable, is positioned between two support members of a handle section, and a location of introduction of the cable is disposed in a manner to extend therebetween. In the treatment instrument, an ultrasonic vibration element unit is attached and rotatably coupled to a handle unit, a power receiving section or a power supply section at the coupling constitutes a rotary electrode structure by a cylindrical electrode and a terminal electrode, and power from an outside is received and transmitted between the handle unit and the ultrasonic vibration element unit.

主权项

1. A treatment instrument comprising:
a probe unit including a probe configured to transmit ultrasonic vibrations generated by an ultrasonic vibration element; a case section storing the ultrasonic vibration element which is connectable to the probe; a treatment section main body configured to rotatably hold the probe and to couple the ultrasonic vibration element of the case section and the probe of the probe unit when the case section is detachably attached; a contact terminal fixedly provided in the treatment section main body; a power distribution section which is provided in the case section and is a current path to the ultrasonic vibration element; a contact-point member fixedly provided in the case section and electrically connected to the power distribution section; an electrically conductive member configured to maintain a state in which the contact member and the contact-point member are electrically connected, when the contact-point member rotates relative to the contact terminal in accordance with rotation of the probe, at a time of attaching the case section and the treatment section main body; and a cable configured to supply at least driving power to the contact terminal from an outside.