| 摘要 |
PURPOSE:To secure softness and flexibility and constitute the outside diameter of a tube fine by installing a rotor for shifting and/or revolving a part of members in a tube inserted into a body to be tested and installing a stator which is arranged outside the testing body and drives the rotor from outside the testing body. CONSTITUTION:A rotor 62 which constitutes a motor is connected with the reflector body 18 of an ultrasonic wave probe 50 through a bearing 61, and a detector 64 for detecting the revolution speed of the rotor 62 is connected with the rotor 62 through a threshold plate 22 which serves also as bearing. The detected revolution speed of the rotor 62 is transmitted to a body side through a lead wire 66. A stator 68 consisting of a magnetic body for driving the rotor 62 is installed outside the body length of a patient 1. In the state where the projecting electrodes 68a and 68d of the stator 68 are energized so as to form the N and S electrodes and the projecting electrodes 62a and 62c of the rotor 62 are at the opposed positions to the projecting electrodes 68a and 68d of the stator 68, the projecting electrodes 68a and 68d are OFF-energized and the projecting electrodes 68b and 68e are energized to the N and S electrodes, and then a torque in the counterclockwise direction acts on the rotor 62, which is revolved in the counterclockwise direction. |
