05199424 is referenced by 267 patents and cites 14 patents.

A CPAP apparatus including: a variable pressured air source and means to vary the air pressure delivered therefrom; a nose piece for sealed air communication with a patient's respiratory system; an air communication line from the air source to the nose piece; a sound transducer adapted to be in sound communication with the patient's respiratory system; and a feedback system controlling the output pressure of the air source in response to an output from the transducer so as to increase the output air pressure from said air source, in response to detection of sound indicative of snoring, in accordance with a predefined procedure. The sound transducer, in its most general form, comprises a pressure transducer which, in addition to detecting snoring sounds, can detect other respiratory parameters such as the rate of breathing, inhaled air flow volume, and inhaled air flow rate. Output air pressure from air source is increased in response to one or more of these parameters in accordance with a pre-defined procedure.

Title
Device for monitoring breathing during sleep and control of CPAP treatment that is patient controlled
Application Number
457757
Publication Number
5199424
Application Date
December 12, 1991
Publication Date
April 6, 1993
Inventor
Christopher Lynch
376 Lane Cove Road, North Ryde, Sydney, NSW 2113
AU
Colin E Sullivan
27 Wharf Road, Birchgrove, Sydney, NSW 2041
AU
Agent
Merchant Gould Smith Edell Welter & Schmidt
IPC
A61B 5/08
F16K 31/02
A62B 7/00
A61M 16/00
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