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Sleep apnea treatment apparatus and passive humidifier for use therewith

  • US 5,537,997 A
  • Filed: 06/07/1995
  • Issued: 07/23/1996
  • Est. Priority Date: 01/26/1995
  • Status: Expired due to Term
First Claim
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1. Apparatus for delivering pressurized gas to the airway of a patient, said apparatus comprising:

  • gas flow generator means for providing a flow of pressurized gas;

    an acoustically compatible humidifier means connected to said gas flow generator means for moisturizing the flow of pressurized gas provided by said gas flow generator means, said humidifier means comprising a means for optimally transmitting sound frequencies falling within a frequency range which is known to be associated with upper airway obstructions;

    patient interface means for sealingly communicating with the airway of a patient;

    conduit means for delivery of said gas flow to the airway of a patient, said conduit means having a first end connected to said humidifier means and a second end connected to said patient interface means;

    sensor means in fluid communication with said conduit means and located substantially at said gas flow generator means for detecting conditions corresponding to breathing patterns of a patient and generating signals corresponding to said conditions, said sensor means being acoustically tuned to optimally transmit sound frequencies falling within a frequency range which is known to be associated with upper airway obstructions; and

    information processing means for receiving said signals and for controlling the output of said gas flow generator means responsive to said signals.

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