ULTRASONIC PROBE FOR INTRACELOM EXAMINATION

摘要

PURPOSE: To provide the ultrasonic probe for an intracelom examination, which eliminates an uneven rotation of an ultrasonic vibrator and can always obtain a distinct ultrasonic image. ;CONSTITUTION: When an inserting part is bent in accordance with an inserting path in a celom, and a difference is generated between length of a flexible shaft 21 and length of a sheath 20, the flexible shaft 21 moves in the axial direction within a range of length of a slot 27a being a movable range of a connecting pin 26 in accordance with a stress generated in the flexible shaft 21. Also, when the bending amount of the inserting part 1 is further increased in accordance with the inserting path, and the flexible shaft 21 comes into contact with the sheath 20, the connecting pin 26 moves forward and backwared along the slot 27a through two rings 28 having a large diameter by a ring supporting member 29 moved forward and backward minutely in the axial direction by an advance/retreat driving device 30, the flexible shaft 21 moves forward and backward minutely in the axial direction, while rotating, and the connecting pin 26 is moved to an appropriate position.;COPYRIGHT: (C)1993,JPO&Japio