Apparatus for refining signals derived from fetal heartbeats

Details Apparatus for refining signals derived from fetal heartbeats Apparatus for refining signals derived from fetal heartbeats

1975-02-24

1976-09-28

Kamm, William E.

Surgery

Truss

Perineal

128 205Z, 235181, A61B 502

Patent

active

039825280

ABSTRACT:
Circuitry for refinement of fetal heart signals from an ultrasonic (or other mechanical energy) transducer, featuring improved signal processing circuitry connected to the transducer to convert useful information-carrying energy in the transducer output into a refined electrical signal, and improved correlation circuitry for providing an output to a cardiotachometer.

REFERENCES:
patent: 2840308 (1958-06-01), Van Horne
patent: 3185958 (1965-05-01), Masterson et al.
patent: 3646333 (1972-02-01), Pryor, Jr.
patent: 3717756 (1973-02-01), Stitt
patent: 3780725 (1973-12-01), Goldberg
patent: 3811428 (1974-05-01), Van Horn et al.

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