Administration of CPAP treatment pressure in presence of apnea

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United States of America Patent

PATENT NO 9526855
APP PUB NO 20140166014A1
SERIAL NO

14187919

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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CPAP treatment apparatus is disclosed having a controllable flow generator (34, 38, 40) operable to produce breathable gas at a treatment pressure elevated above atmosphere to a patient by a delivery tube (32) coupled to a mask (30) having connection with a patient's airway. A sensor (44, 50, 56, 58) generates a signal representative of patient respiratory flow, that is provided to a controller (54, 62, 64). The controller (54, 62, 64) is operable to determine the occurrence of an apnea from a reduction in respiratory airflow below a threshold, and if an apnea has occurred, to determine the duration of the apnea and to cause the flow generator (34, 38) to increase the treatment pressure. In one preferred form the increase in pressure is zero if the treatment pressure before the apnea exceeds a pressure threshold. Below the pressure threshold the increase in pressure is an increasing of the duration of the apnea multiplied by the between the pressure threshold and the current function difference treatment pressure.

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Patent Owner(s)

  • RESMED LIMITED

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Berthon-Jones, Michael Leonay, AU 99 7736
Farrugia, Steven Paul Lugarno, AU 71 1828

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