Surgery – Diagnostic testing – Respiratory
Reexamination Certificate
1998-10-08
2001-09-18
Lacyk, John P. (Department: 3736)
Surgery
Diagnostic testing
Respiratory
C600S532000, C600S538000, C128S201230
Reexamination Certificate
active
06290654
ABSTRACT:
This invention relates to an obstructive sleep apnea detection apparatus method utilizing pattern recognition.
In application Ser. No. 08/472,441 filed on Jun. 7, 1995 there is disclosed a sleep apnea screening and/or detecting apparatus and method, which has been found to have many desirable features. However, there are limitations in the apparatus and method, particularly where shallow breathing sounds are being monitored. Also, in certain situations there has been difficulty in eliminating background noise or reducing it to a sufficiently low level. There is therefore a need for a new apparatus and method which overcomes these difficulties.
In general, it is an object of the present invention to provide an obstructive sleep apnea detection apparatus and method which utilizes pattern recognition to make it possible to monitor shallow and wide ranges of airflows of the patient producing various sound levels and/or vibration caused by turbulence in the airflow.
Another object of the invention is to provide an apparatus and method of the above character which makes possible unattended home studies of obstructive sleep apnea and hypopnea.
Another object of the invention is to provide an apparatus and method of the above character which only utilizes airflow and/or oxygen saturation sound information for detecting disordered breathing events.
Another object of the invention is to provide an apparatus and method of the above character in which a single vibration sensor can be utilized for measuring turbulence in airflow.
Another object of the invention is to provide an apparatus and method of the above character which may only require the use of a single microphone for picking up the desired signal and ambient noise.
Another object of the invention is to provide an apparatus and method of the above character in which the noise component is eliminated internally in software to provide improved noise cancellation, especially for periodic noises.
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patent: 5853005 (1998-12-01), Scanlon
Astorino Michael
Flehr Hohbach Test Albritton & Herbert LLP
Lacyk John P.
Sleep Solutions, Inc.
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