Fluidic heart-sound monitor and esophageal stethoscope

Details Fluidic heart-sound monitor and esophageal stethoscope Fluidic heart-sound monitor and esophageal stethoscope

1990-10-23

1991-12-31

Kamm, William E.

Surgery

Truss

Pad

128715, A61B 702

Patent

active

050762842

ABSTRACT:
A heart-sound monitor and esophageal stethoscope which makes use of fluidic aminar proportional amplifiers (LPAs). These LPA's are used to sense and amplify incoming acoustic pressure signals, such as heart signals. Moreover, the fluidic monitor is able to monitor a fetus heartbeat while eliminating the acoustic interference present from the mother's heartbeat. In this case, the LPA acts not only as an amplifier, but as an acoustic filter as well.

REFERENCES:
patent: 2699465 (1955-01-01), Hamilton
patent: 3185778 (1965-05-01), Giannini et al.
patent: 3732631 (1973-05-01), Petrovick
patent: 4248241 (1981-02-01), Taechi

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