Portable spirometer with improved accuracy

Details Portable spirometer with improved accuracy Portable spirometer with improved accuracy

1992-03-31

1994-01-11

Kamm, William E.

Surgery

Truss

Pad

128724, 7386103, 732025, 7320419, A61B 508, G01F 186, G01F 1502, G01F 168

Patent

active

052771962

ABSTRACT:
A spirometric measurement device includes an arrangement for computation of a dynamic correction factor to compensate for temperature-related volume changes in time varying raw forced expiratory volume (FEV) data due to cooling of expired gas. The correction factor, which compensates for body-temperature-pressure-saturated (BTPS) changes, varies in time according to variation of temperature of a flow sensor. The temperature of the flow sensor is accurately established by positioning a temperature sensor downstream of the flow sensor.

REFERENCES:
patent: 3735752 (1973-05-01), Rodder
patent: 4720800 (1988-01-01), Suzuki et al.
patent: 4815459 (1989-03-01), Beran
patent: 5060655 (1991-10-01), Rudolph
Wright Magtrak Respiratory Monitors by fdE Ferraris Medical, Inc.
The Morgan Spirocheck Portable Spirometer.
Welch Allyn Introduces PneumoCheck.
Satellite Subminiature Spirometry System by Jones.
SpiroSense.TM. Spirometry System by Tamarac Systems.
Compact Spirometry by Vitalograph.

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