Apparatus and method for non-contacting detection of respiration

Details Apparatus and method for non-contacting detection of respiration Apparatus and method for non-contacting detection of respiration

1994-09-27

1996-04-23

Jaworski, Francis

Surgery

Truss

Pad

128721, A61B 800, A61B 508

Patent

active

055094147

ABSTRACT:
Apparatus and method for detecting air flow at the mouth and nose of a subject, including a transducer for converting electrical signals into ultrasound waves and vice versa, means for directing the ultrasound waves toward the mouth and nose of the subject and receiving return waves, and a detector to analyze electrical signals converted by the transducer from the return ultrasound waves.

REFERENCES:
patent: 3777740 (1973-12-01), Hokanson
patent: 4122427 (1978-10-01), Karsh
patent: 4197856 (1980-04-01), Northrop
patent: 5220922 (1993-06-01), Barany
Ogura et al "Respiration Flowmeter" International (European) Appln Publ. No. 0 051 293 published Dec. 5, 1982.
Plant D. et al "Design & Construction of UTS Pneumotachometer", IEEE BME Trans. vol. BME-77 No. 10 Oct. 1980.
Blumenfeld, W et al "A Coaxial UTS Pneumotachometer", Med & Biol Eng. v 13, No. 6 pp. 855-860, Nov. 1975.

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