Expiratory flow meter

Details Expiratory flow meter Expiratory flow meter

1978-01-26

1979-06-19

Cohen, Lee S.

Surgery

Truss

Pad

73209, 73211, 272 99, A61B 508

Patent

active

041583604

ABSTRACT:
A peak expiratory flow meter device for indicating airway obstruction in a patient. The device includes an elongated channel arranged perpendicularly to a mouthpiece, at the end of which an adjustable orifice is disposed. A float moves within the channel in response to expiration from the patient. A removable pin is provided with the channel for accommodating various ranges of expiration, and for the same general reason, rotatable discs are provided to partially cover the orifice.

REFERENCES:
patent: 3411357 (1968-11-01), Childs
patent: 3633421 (1972-01-01), Phillips
patent: 3695608 (1972-10-01), Hanson
patent: 3822699 (1974-07-01), Cleary
patent: 3871364 (1975-03-01), Boehringer
patent: 3908987 (1975-09-01), Boehringer
patent: 4025070 (1977-05-01), McGull et al.

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