| 摘要 |
PURPOSE:To provide the ultrasonic diagnostic device which is inserted into a capillary having a bend such as a blood vessel, transfers rotational force existing in the outside of the capillary to the tip part with high precision and scans the propagating direction of an ultrasonic wave. CONSTITUTION:The device is provided with an ultrasonic vibrator 5 provided in the tip part of an ultrasonic probe 7 and a rotary scanning part 4 for allowing an ultrasonic wave transmitted from the ultrasonic vibrator 5 to scan two-dimensionally, and transfers rotational force generated in a driving part 8 positioned in the other end part against the tip part of a catheter 1 to the rotary scanning part 4 by a driving transfer shaft 6 of a spring shape and allows it to scan two-dimensionally. Also, the outside shape of the ultrasonic probe 7 is constituted of the catheter 1 of a capillary structure, a guide spring 2 having length obtained by supposing a bend of an inserted blood vessel connected to its tip, and an acoustic window 3 for covering the tip part of the catheter 1, thereby, even in the bent part, the rotational force by the driving transfer shaft is transferred stably to the rotary scanning part 4, and an ultrasonic tomographic image scarcely having a distortion is obtained. |
