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Exhalation valve

  • US 7,004,162 B1
  • Filed: 09/30/1999
  • Issued: 02/28/2006
  • Est. Priority Date: 11/09/1992
  • Status: Expired due to Fees
First Claim
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1. A mask for the inhalation of medication comprising:

  • a front portion having an inlet adapted for connection to a source for providing an aerosol medication, wherein said mask has minimal dead space inside yet provides efficient inhalation and exhalation flow paths that purge said mask of exhaled air;

    a side wall expanding outwardly from said front portion to a rear portion adapted to fit sealingly on a human face;

    a wall located adjacent said front portion, and a valve integrally formed in an opening in said wall, wherein said wall and said valve form a single piece of material, said valve adapted for positioning adjacent nostrils of a nose; and

    wherein said valve is adapted to permit air flow through said opening upon a patient breathing in a first direction, and to prevent air flow through said opening upon the patient breathing in a second direction opposite the first direction and wherein said valve comprises an exhalation valve in fluid communication with an extension projecting from said side wall.

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