Dynamic braked spirometer

Details Dynamic braked spirometer Dynamic braked spirometer

1982-08-27

1986-02-25

Coven, Edward M.

Surgery

Truss

Pad

7386133, 7386181, A61B 508

Patent

active

045722099

ABSTRACT:
An improved spirometer is disclosed which permits more accurate measurement of the volume of air exhaled from the lungs of a patient. The improvement comprises flow-responsive means such as a pair of vanes disposed downstream of the rotor. The vanes cause the air flow through the spirometer to stop, almost instantaneously, with the cessation of flow into the spirometer. Thus, after the patient stops exhaling through the spirometer, the rotor stops almost immediately, permitting more accurate measurements of the volume of air exhaled.

REFERENCES:
patent: 2299406 (1942-10-01), Potter
patent: 3863806 (1975-02-01), Risser, Jr.
patent: 3937081 (1976-02-01), Dabanian et al.
patent: 4047433 (1977-09-01), Dabanian
patent: 4182175 (1980-01-01), Boehringer

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