Portable hand held doppler fetal heart rate probe with selective

Details Portable hand held doppler fetal heart rate probe with selective Portable hand held doppler fetal heart rate probe with selective

1996-06-12

1998-10-27

Oda, Christine K.

Measuring and testing

Vibration

By mechanical waves

07386125, 600455, A61B 806

Patent

active

058279695

ABSTRACT:
A probe in a hand held ultrasonic Doppler fetal heart beat detector and monitoring system comprising a crystal for transmitting ultrasonic energy, a variable power source connected to said crystal for driving the crystal at a selected power setting and a microprocessor for selecting a power setting for the variable power source.

REFERENCES:
patent: 4413629 (1983-11-01), Durley III
patent: 4819652 (1989-04-01), Micco
patent: 5313947 (1994-05-01), Micco

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