Peak flow meter

Details Peak flow meter Peak flow meter

1994-11-23

1997-05-06

Williams, Hezron E.

Measuring and testing

Volume or rate of flow

Using differential pressure

128725, A16B 508

Patent

active

056273240

ABSTRACT:
A peak flow meter is provided comprising an elongated body having a longitudinal direction and a predetermined cross sectional shape and a growing area. The body has an open entering end and an open exit end. The body is circumferentially continuous substantially from end to end. A piston and an indicator are mounted in said body for movement longitudinally thereof upon exhalation into the open entering end. The indicator is pushed along said body for movement by the piston longitudinally of said body. The indicator is of low mass so as not to overshoot, and is returned to rest by shaking a weight against it. A logarithmic scale is provided along said body against which the position of said indicator can be read.

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Advertisement for "Assess Peak Flow Meter", believed to be published prior to Nov. 17, 1993.
Advertisement for "Personal Best Peak Flow Meter", believed to be published prior to Nov. 17, 1993.
Advertisement for "Astech Peak Flow Meter", believed to be published prior to Nov. 17, 1993.
Photographs of "Pocketpeak" peak flow meter manufactured by Ferraris Medical Ltd. Believed to be known or used prior to Nov. 17, 1993.
Photographs of "SPIR-O-FLOW" peak flow meter manufactured by Spirometrics, Inc. Believed to be known or used prior to Nov. 17, 1993.
EPO Search Report for EP 96 30 3201 dated Jul. 25, 1996.
Published EPO search report dated Mar. 3, 1995.
Copy of pamphlet entitled "Peak Flow Monitoring for Patients With Asthma", published by HealthScan Inc., dated 1990.
Manual entitled "Peak Performance A Strategy for Asthma Self-Assessment", by Guillermo R. Mendoza, M.D., dated 1987.
Copy of instruction manual for "ASSESS" peak flow meter manufactured by Healthscan Products, Inc., dated Aug. 1991.
Copy of instruction manual for "Personal Best" peak flow meter manufactured by Healthscan Products, Inc. dated 1994.

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