06305372 is referenced by 106 patents and cites 3 patents.

A pressure support ventilatory assist device is disclosed. Pressure is provided by a blower which is operated at the minimum speed necessary to achieve the desired inspiration pressure. Pressure regulation is achieved by means of a novel pressure regulator valve, rather than by modulating blower speed, thereby reducing perceptible noise. The flow sensor is removed from its conventional location between the regulator valve and the patient mask to a location upstream of the regulator valve to minimize resistance to patient expiration and to isolate the valve from possible fluids in the tubing. Since the flow sensor in this location cannot sense expiration flows, the device includes circuitry for generating a model of the expiratory waveform based upon the inspiratory waveform. Actual pressure is then modulated to conform to the model waveform.

Title
Pressure support ventilatory assist system
Application Number
9/339426
Publication Number
6305372 (B1)
Application Date
June 24, 1999
Publication Date
October 23, 2001
Inventor
John L Servidio
1092 Cheney Pl., Marietta
GA, US
Agent
Troutman Sanders
US
Agent
Gerald R Boss Esq
US
IPC
A61M 16/00
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