Medical treatment device utilizing ultrasonic wave

Details Medical treatment device utilizing ultrasonic wave Medical treatment device utilizing ultrasonic wave

1987-02-27

1991-02-05

Jaworski, Francis

Surgery

Truss

Perineal

604 22, A61B 1720

Patent

active

049895885

ABSTRACT:
A medical treatment device for resecting, e.g., a prostate or breaking a bladder stone, which includes a vibrator for generating ultrasonic vibrations, a horn connected to the vibrator, a casing for accommodating the vibrator and the horn, a probe connected to the front portion of the horn to transmit ultrasonic vibrations generated by the vibrator, and a power source unit for supplying a drive voltage to the vibrator, the power source unit having an oscillator for producing a wave having a frequency for vibrating the probe and a frequency switching circuit for selecting an oscillating frequency at which the distal end of the probe serves as a loop of vibration or a frequency at which the distal end of the probe serves as a node of vibration.

REFERENCES:
patent: 3584327 (1969-04-01), Murry
patent: 3861391 (1975-01-01), Antonevich et al.
patent: 3990452 (1976-11-01), Murry et al.
patent: 4535771 (1985-08-01), Takayama
patent: 4587958 (1986-05-01), Noguchi et al.
patent: 4708127 (1987-11-01), Abdelghani
patent: 4750902 (1988-06-01), Wuchinich et al.

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