Method and apparatus for improved flow limitation detection of obstructive sleep apnea

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United States of America Patent

PATENT NO 11759590
APP PUB NO 20210361894A1
SERIAL NO

17190002

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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In a respiratory apparatus for treatment of sleep apnea and other disorders associated with an obstruction of a patient's airway and which uses an airflow signal, an obstruction index is generated which detects the flattening of the inspiratory portion of the airflow. The flattening index serves as an obstruction index used to differentiate normal and obstructed breathing. The obstruction index is based upon comparison of values of airflow in different sectors of the inspiratory peak of the wave function and is particularly suitable for distinguishing M shaped or square shaped respiratory patters patterns indicative of partially obstructed airways.

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Patent Owner(s)

  • RESMED PTY LTD

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Armitstead, Jeffrey Peter Sydney, AU 45 509
Somaiya, Chinmayee Sydney, AU 36 482

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