Portable Oxygen


What is continuous flow oxygen?

When a continuous flow oxygen delivery system is being used, oxygen is flowing at a prescribed liter flow all the time (like when you turn on your faucet and water flows). Oxygen will be flowing while you are breathing in (inspiration), and while you are breathing out (exhalation). These systems are either concentrators (powered by electricity), cylinders (tanks, oxygen under pressure), or liquid systems (liquid oxygen is warmed so it turns from liquid oxygen into gaseous oxygen).

What is a pulse dose or conserving device oxygen system?

A pulse dose system only delivers oxygen during a portion of the inspiratory cycle; because oxygen is not being delivered during exhalation it is conserving oxygen.

Important note:There are no government regulations mandating the amount of oxygen to be delivered during the "pulse dose", or the length of time the oxygen is to be delivered during inspiration. The available systems vary GREATLY; therefore, anyone wanting to use a pulse dose delivery system should be tested by a clinical professional with a pulse oximeter to make sure the oxygen level they are receiving is safe.

Freestyle® Comfort®

  • FreeStyle Comfort has an ergonomic design, allowing it to rest comfortably against your body
  • The UltraSense™ breath detection technology ensures the correct oxygen delivery
  • Small and light at only 5 pounds for your portability
  • Simple, three-button control panel is easy to use
  • Size and Power:
    • Dimensions: 7.3 inches wide x 3.1 inches deep x 10 inches high with the small 8-cell battery (11 inches high with the large 16-cell battery)
    • Weight: 5 pounds with the small 8-cell battery (6 pounds with large 16-cell battery)
    • Power: 100–240 VAC, 50-60Hz
    • At five pounds with a small 8-cell battery and six pounds with a large 16-cell battery, the FreeStyle Comfort oxygen concentrator is very portable
    • It offers five pulse dose settings and can deliver up to 1050 mL of oxygen per minute
    • With a small battery at a setting of 2, the unit will last 4 hours on average; at a setting of 5, it will last two hours


The FreeStyle Comfort portable oxygen concentrator is a compact machine, rounded and curved to rest comfortably against the user’s body. At the bottom are two air intake filters, the power port receptacle tab, the battery pack, and the battery pack release button. The top side of the unit features the control panel, which is easy to access when the machine is standing upright or carried at your side.

UltraSense technology: If the unit doesn’t detect a breath for 15 seconds, it will automatically deliver oxygen at its current setting at 20 breaths per minute until it detects another breath.

The LCD screen displays:

  • The current flow setting, the battery charge
  • If the unit is plugged into AC/DC power
  • Because the unit is also FAA approved, the screen will also display an airplane symbol when the unit is in Airplane mode.

Caring for the unit is easy:

  • Users must only clean the air intake filters on a weekly basis
  • Users can also use a damp cloth and a mild disinfectant to clean the outside of the unit, as needed

Eclipse 5

  • Oxygen Concentration: 90%+5.5%/-3% @ sea level
  • Setting: 16-96mL (16mL increments), 128mL, 160mL, 192mL
  • Flow Rates: Continuous Flow Settings: 0.5 to 3.0 LPM (0.5 liter increments)
  • Pulse Dose Settings: 1-6 delivering 16-96mL (16mL increments), 128mL, 160mL, 192mL
  • Oxygen Outlet Pressure: 5.0 psig (34.5 kPa)
  • Dimensions: 19.3 x 12.3 x 7.1 inches
  • Weight: Eclipse 15 lbs., Battery 3.4 lbs.
  • Power: AC Power: 100-240 VAC, 50-60 Hz; DC Power: 12 V nominal; Battery: Quantity (2) 97.5 W-Hr battery packs each containing 7.92 gm of lithium content
  • Battery Duration: 2 hours (at 2LPM continuous flow); 5.1 hours (pulse at a 2 setting)

XPO2 (Invacare)

  • Weight: Approximately 6 pounds; 7.3 pounds with optional supplemental battery
  • Dimensions: 10”H X 7” W X 4”D
  • Oxygen: Pulse dose delivery with settings 1-5
  • Battery:
    • 2.5 hour battery duration at a setting of 2
    • 5 hour battery duration at a setting of 2 with optional supplemental battery
  • Power: AC, DC, battery
  • Power Consumption: 36 watts at a setting of 2


  • Oxygen Concentrations: 86 to 97% at all settings
  • Continuous flow settings: 0.5/1/1.5/2 l/min
  • Pulse mode bolus size: 1=12 ml/1.5=18 ml/2=24 ml/2.5=30 ml/3=36 ml/3.5=42 ml/4=48 ml/4.5=54 ml/5=60 ml/5.5=66 ml/6=72 ml
  • Sound level: ≤ 43 dB at pulse setting 2 dB
  • Size: 29.2 cm x 25.4 cm x 15.2 cm (11.5" x 10" x 6")
  • Weight with battery: 4.5 (10) kb (lbs)
  • SimplyGo's battery duration: 3.0 (pulse dose setting of 2*) and 0.9 (continuous flow 2 LPM) hr
  • Operating temperature: 5° to 40°C (41° to 104°F)
  • Filtration: Internal bacteria filter
  • Storage temperature (unit only): -20° to 60°C (-4° to 140°F)
  • Altitude: Up to 3.048 m/10,000 ft
  • DC power - input: 11.5 to 16 VDC and 18 A max
  • DC power - output: 19 VDC and 7.9 A max
  • AC power - input: 100 to 240 VAC/ 50 to 60 Hz/1.7 A max
  • AC power - output: 19 VDC and 7.9 A max
  • Power consumption: 150 while charging/120 while not charging
  • Alarm types: Low oxygen purity/No breath/High breath rate/No flow/Low battery/Depleted battery/Wrong battery/System technical fault
  • Lithium Ion battery:14.4 VDC 6600 mAh (LiIon), 0.7 kg (1.5 lbs), charge time is approximately 2 to 3 hours per battery from fully discharged