Breath sensing apparatus

Details Breath sensing apparatus Breath sensing apparatus

1992-11-17

1994-05-17

Sykes, Angela D.

Surgery

Truss

Pad

128716, A61B 5087

Patent

active

053118758

ABSTRACT:
A breathing sensor comprising a thin flexible compliant film transducer exhibiting piezoelectric and pyroelectric properties. The transducer preferably comprises a thin film of polyvinylidene fluoride (PVDF) having a pattern of metallization on the opposed surfaces thereof defining electrodes. The transducer is designed to be affixed proximate a person's airway such that the tidal flow of inspired and expired air will impinge upon the transducer. It is adapted to be coupled to electronic circuitry for indicating normal breathing, for providing an alarm in the event of sleep apnea and for providing an indication when sound related to respiratory distress is present.

REFERENCES:
patent: 4960118 (1990-10-01), Pennock
patent: 4971065 (1990-11-01), Pearce
patent: 4989612 (1991-02-01), Fiore
patent: 5099702 (1992-03-01), French
patent: 5161541 (1992-11-01), Bowman et al.
patent: 5201322 (1993-04-01), Henry et al.
Atochem Sensors, Inc.--Technical Notes, Pennwalt Corp. .COPYRGT.1987, pp. 1-64.

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