Spirometer with zone graph

Details Spirometer with zone graph Spirometer with zone graph

1992-12-24

1994-06-14

Sykes, Angela D.

Surgery

Truss

Pad

128726, A61B 5087

Patent

active

053201078

ABSTRACT:
A spirometer for in-home use by an individual with a respiratory disorder such as asthma measures the individual's current lung expiratory peak flow rate and provides a means to compare the current peak flow rate to a historical peak flow rate. The spirometer comprises an air flow channel having a terminus to receive air blown into it by the individual, a flow rate measuring chamber in communication with the air flow channel, and an adjustable zone graph in operable association with the flow rate measuring chamber. The zone graph has a series of zones to indicate the individuals current peak rate and compare it to the individual's previously determined peak flow rate as measured at a fully healthy period of time. A visual comparison of the peak flow rates can alert the individual to an on-coming asthma attack prior to the individual suffering from any asthma symptoms.

REFERENCES:
patent: 3367324 (1968-02-01), De Bono
patent: 3862628 (1975-01-01), Williams
patent: 4041935 (1977-08-01), Garbe
patent: 4158360 (1979-06-01), Adams
patent: 4284083 (1981-08-01), Lester
patent: 4391283 (1983-07-01), Sharpless et al.
patent: 4944306 (1990-07-01), Alvino

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