Ultrasonic operating apparatus and tool for changing tip thereof

An ultrasonic operating apparatus comprising:

• an elongate insert portion capable of being inserted into a body cavity;
• an operating portion located on a distal end portion of the insert portion, the operating portion being used to operate an organism tissue;
• a handling portion coupled to a proximal end portion of said insert portion, the handling portion having therein an ultrasonic vibrator capable of generating ultrasonic vibration;
• a covering tube located around said insert portion;
• a vibration transmitting member passed through the covering tube, the vibration transmitting member having an ultrasonic probe on a side of said operating portion and capable of transmitting the ultrasonic vibration from said ultrasonic vibrator to said ultrasonic probe;
• a jaw rockably supported opposite said ultrasonic probe and capable of seizing the organism tissue in conjunction with said ultrasonic probe;
• a control handle located in said handling portion and capable of opening and closing said jaw with respect to said ultrasonic probe;
• and
• a handling force transmitting member coupling said jaw and said control handle, and capable of transmitting handling force from said control handle to said jaw,
• said jaw including a frame-shaped jaw body having at least supporting arms arranged individually on the opposite sides of a slot extending in an axial direction of said insert portion, a tip capable of seizing the organism tissue in conjunction with said ultrasonic probe, and a joint portion removably coupling said tip between said supporting arms of said jaw body.