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Supplemental oxygen delivery apparatus and method

  • US 5,865,174 A
  • Filed: 10/29/1996
  • Issued: 02/02/1999
  • Est. Priority Date: 10/29/1996
  • Status: Expired due to Fees
First Claim
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1. An apparatus for conserving oxygen being delivered from an oxygen supply to a patient comprising:

  • a sensing passage fluidly connectable to a nasal passage of a patient, and a delivery passage separated from said sensing passage, wherein said delivery passage is fluidly connectable to a patient'"'"'s nasal passage;

    a valve, wherein said valve includes a valve inlet, wherein said valve inlet is fluidly connectable to an oxygen supply, and wherein said valve further includes a valve outlet, wherein said valve outlet is fluidly connectable to said delivery passage, and wherein said valve is selectively changeable between a first valve condition wherein said valve inlet and valve outlet are not in fluid communication, and a second valve condition wherein said valve inlet and valve outlet are in fluid communication;

    a pressure sensor, wherein said pressure sensor is in fluid communication with said sensing passage, and wherein said sensor is operative to a sense a sensed pressure in said sensing passage;

    a controller in operative connection with said pressure sensor and said valve, wherein said controller is operative to cause said valve to change from the first condition to the second condition responsive to said senses pressure reaching a threshold level; and

    a manually actuated switch, wherein said switch is manually movable between a first switch position and a second switch position, wherein said manual switch is in operative connection with said valve, and wherein in the first switch position said valve is enabled to change responsive to said controller between said first and second valve conditions, and wherein in the second switch position said valve is continuously in the second condition.

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