Ultrasound therapy device

Details Ultrasound therapy device Ultrasound therapy device

1980-10-14

1983-01-11

Dobeck, B.

Electricity: motive power systems

Nonmagnetic motor

128 24A, H02N 100

Patent

active

043684106

ABSTRACT:
An ultrasound therapy device is provided which maintains a selected constant electrical drive power to a transducer regardless of the load on said transducer by means of an analog servo feedback circuit. The device is operable in either a continuous or pulsed mode and if operated in the pulsed mode, both the pulse period and the pulse duration can be selected by the operator. Circuitry is provided to prevent the operator from selecting a pulse duration greater than the selected pulse period. Touch pad input switches may be used to input values of the operating parameters, and the chosen parameters may be displayed on digital readouts on the front panel of the device.

REFERENCES:
patent: 3293569 (1966-12-01), Eglund et al.
patent: 3489930 (1970-01-01), Shoh
patent: 3517220 (1970-06-01), Gibson et al.
patent: 3573781 (1971-04-01), Shoh
patent: 4302728 (1981-10-01), Nakamura
Handbook of Operational Amplifier Circuit Design, David F. Stout and Milton Kaufman, McGraw Hill Book Co., 1976, pp. 6-9, Fig. 6.multidot.4.
Mettler Electronics Corp. Brochure entitled "Sonicator II", dated Nov. 1979.
Rich-Mar News Release and Pamphlet for the Rich-Mar IV, dated Feb. 5, 1975.

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