Device and method to measure inhalation and exhalation air flows

Details Device and method to measure inhalation and exhalation air flows Device and method to measure inhalation and exhalation air flows

1999-02-08

2000-10-03

O'Connor, Cary

Surgery

Diagnostic testing

Respiratory

600538, 73 8677, A61B 508

Patent

active

061266132

ABSTRACT:
A spirometer is provided which has an air flow path comprising a mouthpiece, filter (such as an air filter or biostatic filter), and an air pathway in which a multiblade transparent windmill rotor rotates when air travels through same. Tips of the rotor are used to detect the rate of rotation providing a train of pulses linearly proportional to the volume of air flowing through the cylindrical air path.

REFERENCES:
patent: 4282883 (1981-08-01), Yerushalmy
patent: 4441505 (1984-04-01), Edwards et al.
patent: 5003828 (1991-04-01), Van Den Burg
patent: 5158094 (1992-10-01), Miller
patent: 5413112 (1995-05-01), Jansen et al.

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