Oxygen Conserving Device

Document created by kbass on Dec 28, 2016Last modified by Mary Aycock on May 3, 2018
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The conserving device provides a “bolus” or burst of oxygen during the inspiratory phase of a typical breathing cycle. As a result, an oxygen conserving device extends the use time of an oxygen system by an average of 3:1.The device senses the start of inhalation and instantly releases a short “pulsed” dose at the very beginning of the breathing cycle.


Supplies you will need

  • Conserving Device
  • Oxygen Tank
  • Nasal Cannula


Attaching your oxygen conserving device to the cylinder

  • Loosen the T-handle or connecting unit.
  • Lower the conserving device over or connect it to the post of the cylinder.
  • Align the pins in the conserving device to the holes in the cylinder post as you would a standard regulator. (Refer to the portable oxygen sheet.)
  • Hand-tighten the T-handle or connecting unit until the conserving device is secure.


Using your conserving device

  • Open the cylinder.
  • Attach the nasal cannula to the conserving device and to your nose and face.
  • Turn the rotary selector to the correct prescription flow setting.
  • Breathe normally. The conserving device will deliver a bolus of oxygen at the beginning of inspiration on every breath.
  • When you are finished using the oxygen conserving device, turn your cylinder to the closed position and rotate the rotary selector to the “off” position.
  • Refer to the equipment cleaning sheet for cleaning instructions.


Because an oxygen conserving device in pulse dose mode responds to each individual’s breathing patterns, the use time will vary for each individual depending on the prescription rate and the breath rate. Also, cylinders vary in gaseous liter capacity by manufacturer, which may result in varying use times.


The oxygen conserving device should be kept clean and free from moisture and dust. Avoid getting debris such as sand or dirt inside the device.


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