| 摘要 |
PROBLEM TO BE SOLVED: To equalize the pressing force of oscillator units in an ultrasonic tissue evaluating device wherein the transmitting/receiving of an ultrasonic wave is performed by pressing the oscillator units to a subject. SOLUTION: Oscillator units 10a, 10b are engaged with a feeding screw 30 through arms 22a, 22b and screw receiving parts 24a, 24b. The feeding screw winding direction becomes reverse with the center as a border, and the screw receiving parts 24a, 24b are engaged with the parts of different winding directions. The feeding screw 30 is connected to a handle 34 through a torque limiter 32. When an operator turns the handle 34, the feeding screw 30 rotates, and the oscillator units 10a, 10b come closer or apart to or from each other. By this constitution wherein the torque limiter 32 is provided between the feeding screw 30 and the handle 34, the oscillator units 10a, 10b are prevented from pinching a subject with a specified force or higher. |
