Circuit for monitoring contact of ultrasound transducer with pat

Details Circuit for monitoring contact of ultrasound transducer with pat Circuit for monitoring contact of ultrasound transducer with pat

1985-03-11

1986-08-05

Howell, Kyle L.

Surgery

Truss

Pad

A61B 1000

Patent

active

046037020

ABSTRACT:
A circuit for controlling a patient exposure timer used to measure the time which a patient has been exposed to ultrasound energy is disclosed. The circuit operates by measuring a signal representative of whether an ultrasound transducer is coupled to air or to a patient. If the transducer is coupled to a patient, then the exposure timer is turned on. In the case of a mechanical scanhead, such as an oscillating scanhead or a rotating scanhead, the exposure timer control circuit can also be used to control the mechanical movement of the scanhead itself.

REFERENCES:
patent: 4043181 (1977-08-01), Nigam
patent: 4154114 (1979-05-01), Katy et al.
patent: 4206653 (1980-06-01), Le May
patent: 4323077 (1982-04-01), Smith
patent: 4501151 (1985-02-01), Christman
patent: 4537199 (1985-08-01), Muravaka
Wells, P. N. T. "Biomedical Ultrasonics", Academic Press, N.Y., 1977, pp. 443-448.

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