Fetal heartbeat doppler transducer

Details Fetal heartbeat doppler transducer Fetal heartbeat doppler transducer

1983-06-01

1985-03-12

Howell, Kyle L.

Surgery

Truss

Pad

73642, A61B 1000

Patent

active

045038619

ABSTRACT:
A doppler transducer which is particularly well adapted for use in fetal heartbeat measurements is comprised of a piston type transducer with a pair of lenses, which together provide both a divergent acoustic pattern and a flat surface for good acoustic coupling between the transducer and the mother's abdomen.

REFERENCES:
patent: 3168659 (1965-02-01), Bayre et al.
patent: 3387604 (1968-06-01), Erikson
patent: 3847016 (1974-11-01), Ziedonis
patent: 3971962 (1976-07-01), Green
patent: 4184094 (1980-01-01), Kopel
patent: 4205686 (1980-06-01), Harris et al.
patent: 4325381 (1982-04-01), Glenn
patent: 4340944 (1982-07-01), Dory
patent: 4387720 (1983-06-01), Miller
patent: 4391281 (1983-07-01), Green

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