Apparatus and method for monitoring the waveform of cyclic movem

Details Apparatus and method for monitoring the waveform of cyclic movem Apparatus and method for monitoring the waveform of cyclic movem

1988-05-04

1990-11-06

Smith, Ruth S.

Surgery

Truss

Pad

128721, A61B 5113

Patent

active

049677519

ABSTRACT:
A carrier-frequency signal transmitted through the individual's thorax from a first module to a second module, is modulated at the second module and retransmitted back through the individual's thorax to the first module. An attribute (e.g., doppler frequency shift or amplitude variation) of solely the modulation component of the signal received by the first module is employed to monitor the waveform of cyclic movement (e.g., breathing rate) within the individual's thorax.

REFERENCES:
patent: 3483860 (1969-12-01), Namerow
patent: 3993995 (1976-11-01), Kaplan et al.
patent: 4620146 (1986-10-01), Ishikawa et al.
patent: 4638808 (1987-01-01), Mawhinney

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