06644311 is referenced by 44 patents.

The present invention pertains to a pressure support system in which a flow or volume of gas is measured without using a dedicated flow element used in a conventional flow meter. Instead, the present invention provides a tortuous gas flow path in which a pressure differential is created between two points in the tortuous path. This pressure differential created by the gas flow path provides the necessary pressure drop for measuring the gas flow and/or gas volume passing through the pressure support system.

Title
Monitoring fluid flow in a pressure support system
Application Number
10/27487
Publication Number
6644311 (B1)
Application Date
December 19, 2001
Publication Date
November 11, 2003
Inventor
Winslow K Duff
Export
PA, US
Patrick W Truitt
Pittsburgh
PA, US
Agent
Michael W Haas
US
Assignee
Respironics
PA, US
IPC
A61M 16/00
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