Surgery – Truss – Pad
Patent
1986-05-02
1988-03-22
Coven, Edward M.
Surgery
Truss
Pad
A61B 508
Patent
active
047321598
ABSTRACT:
A capsule pneumograph includes an electret microphone connected to a capsule chestpiece attached to a sleeping subject. The output of the microphone is connected to the input of a recorder or monitor in order to provide a system for the detection of respiratory movements in subjects during polysomnographic sleep monitoring. A tube connecting the capsule chestpiece to the microphone functions as a low pass filter to pass only low frequency signals in the range of respiratory movements from the chestpiece to the microphone.
REFERENCES:
patent: 2699465 (1955-01-01), Hamilton
patent: 3658052 (1972-04-01), Alter
patent: 3727606 (1973-04-01), Sielaff
patent: 3782368 (1974-01-01), Reibold
patent: 3831586 (1974-08-01), Petit
patent: 4169462 (1979-10-01), Strube
patent: 4245651 (1981-01-01), Frost
patent: 4534058 (1985-08-01), Hower
patent: 4598417 (1986-07-01), Deno
"Long Term Respiration Monitoring in Infants--A Comparison of Impedance and Pressure Capsule Monitors" by R. Railton et al., Clin. Phys. Physiol. Meas., 1983, 4(1); 91-94.
Coven Edward M.
Lacyk J. P.
University of Kentucky Research Foundation
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