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Fluid adapter and fluid coupling

  • US 10,272,273 B2
  • Filed: 02/26/2014
  • Issued: 04/30/2019
  • Est. Priority Date: 03/01/2013
  • Status: Active Grant
First Claim
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1. A fluid adapter for a breathable gas delivery device for delivering breathable gas to a user, the breathable gas delivery device having a delivery device gas inlet port having a coupling, the fluid adapter comprising:

  • an adapter body defining an adapter chamber with at least one fluid passageway extending through the adapter body into the adapter chamber;

    an ambient air inlet port arranged to provide fluid communication between the adapter chamber and ambient air outside of the fluid adapter;

    an adapter outlet port formed by the adapter body and in fluid communication with the adapter chamber, the adapter outlet port having a coupling formed by the adapter body, wherein the coupling is arranged to cooperate with the coupling of the gas inlet port of a breathable gas delivery device such that the adapter outlet port is fluidically coupled to the delivery device gas inlet port and such that the fluid adapter is physically coupled to the breathable gas delivery device;

    a one-way valve disposed within the adapter body between the ambient air inlet port and the adapter chamber, wherein the one-way valve is arranged so as to permit fluid flow into the adapter chamber through the ambient air inlet port but restrict or prevent fluid flow out of the adapter chamber through the ambient air inlet port;

    a rotatable part comprising;

    an annular member; and

    a pressurised gas inlet port arranged to be fluidically coupled to a source of pressurised breathable gas;

    wherein the rotatable part is rotatably coupled to the adapter body with the annular member surrounding the adapter body such that the rotatable part can be rotated to a plurality of discrete angular positions which are defined by an indexing feature; and

    wherein in each of the discrete angular positions the pressurised gas inlet port is in fluid communication with the adapter chamber through the at least one fluid passageway, andwherein the adapter body has a generally cylindrical outer wall portion through which the at least one fluid passageway extends into the adapter chamber, wherein the annular member surrounds the cylindrical outer wall portion.

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