Drive Chad Evolution Electronic Oxygen Conserver

Brand/Manufacturer: DRIVE MEDICAL

Drive Chad Evolution Electronic Oxygen Conserver is designed for use as part of a portable ambulatory oxygen system for the purpose of facilitating long-term oxygen therapy (LTOT). This conserver provides mobile LTOT patients with an extended operating time of their mobile system. It includes a combination of a low-pressure regulator and an oxygen conserver and is capable of delivering a precise amount of supplemental oxygen at the optimal point in the breathing cycle. Benefits mouth breathers and patients who cannot take deep breaths by triggering more easily.


  • Drive Chad Evolution Electronic Oxygen Conserver is very lightweight, weighing only 14.9 ounces with batteries
  • Senses a breath or delivers oxygen in the first half of the inspiratory cycle
  • Delivers a 5:1 savings ratio from 14 to 40 breaths per minute
  • Minimum 2 year battery life utilizing 2 AA batteries (average 4 hours per day usage)
  • Increases efficiency in the delivery of oxygen, maximizing the beneficial effects and eliminating unnecessary oxygen waste
  • Delivers a uniform oxygen pulse at increments: 1, 2, 3, 4, 5, 6, 7 Plus CF preset at 2 LPM
  • Single push button selects the equivalent LPM dosage settings
  • Operating pressure range: 200PSI to 3000PSI
  • Auto shut-off feature conserves battery life
  • Fits easily in virtually any carry bag
  • Click Here For Instructions Manual
  • Note:
    - This product requires a prescription from a licensed medical professional.
    - Prescription can be faxed to 1.203.616.2851 or emailed to [email protected]

More Information

  • Caution:
    - The Evolution is not suitable for use during sleep.
    - The Evolution is not suitable for children.
  • Function: When we breathe, approximately one-third of the time is spent inhaling, and two-thirds exhaling. As a result, oxygen delivered by continuous flow is wasted during exhalation. By eliminating oxygen flow during exhalation, a two-thirds savings is possible. Additionally, the application of the Evolution is based on the fact that only oxygen inhaled at the beginning of the breath actually reaches the alveoli and is absorbed by the body. The oxygen inhaled during the remainder of the breath is not used and is exhaled again. For this reason, the Evolution only administers oxygen at the beginning of inhalation. This makes the oxygen source last longer. The Evolution is designed to be an integral component of a lightweight, long-lasting ambulatory system.
  • Care and Maintenance: The Evolution conserver is designed for a long and accurate life, however, as with any electronic device, prudent care is required. The unit should be kept clean and free from moisture and dust, as well as extreme temperature. Do not expose the unit to water, such as when bathing or swimming. It is advisable to keep the device in a carrying bag to afford a degree of protection.


Cylinder TypeCylinder Volume


CF2 lpm

Estimated Cylinder Duration in Hours

(Based on 20 breathes per minute)

M236 Liters3.
M4 (A)113 Liters9.
M6 (B)164 Liters13.
ML6171 Liters14.
M7198 Liters16.
M9 (C)246 Liters20.510.
D425 Liters35.417.711.
E680 Liters56.728.318.914.

Input pressure200 to 3000 PSI (13.8 bar to 206.8 bar)
Operation Temperature range14°F to 104°F (-10°C to 40°C)
Storage Temperature range-40°F to 158°F (-40°C to 70°C)
Operation Humidity range15% - 95% non-condensing
Storage Humidity rangeUp to 95% non-condensing
Operating Altitude-1,000 to 10,000 feet
-304.8 to 3,048 meters
700hPa - 1060hPa
CannulaStandard nasal cannula, up to 7 ft.(2.13 m)
RegulatorBuilt-in, 25 ± 5 PSI (1.7 ± .3 bar)
Continuous flow emergency Factory preset at 2.0 ± 0.5 lpm bypass settingFactory preset at 2.0 ± 0.5 lpm
Oxygen delivery at level:
Continuous flow
Liter Flow Equivalency
2 LPM±0.5 LPM
Maximum breathing rate40 breaths per minute
Power supply - Batteries(2) x 1.5 V alkaline AA or LR6-type rechargeable batteries
Low battery indicator light: Blinking red lightLow battery energy level, replace batteries
Classification according to EN 60601-1
-Degree of protection against electric shock
-Degree of protection against harmful ingress of water
Type BF
IPX1 as per IEC 60529
Electromagnetic compatibility (EMC) according to EN 60601-1-2 - Radio interference suppression - Radio interference immunityEN 55011
EN 61000-4-2 to 6, 8+11
VibrationsWithin IEC 60068-2-64
Dimensions (L x H x W)6.1" L (15.5 cm) x 2.5" H (6.4 cm) x 3.1" W (7.9 cm)
WeightApproximately 14.9 ounces (422 grams) with batteries


2 year limited warranty

Customer Reviews


ItemName - now     11/27/2021

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Karen     09/23/2019

how would you compare the chad Evolution to the Drive SmartDose?


Customer Care    09/26/2019

Drive Chad Evolution Electronic Oxygen Conserver is designed for use as part of a portable ambulatory oxygen system for the purpose of facilitating long-term oxygen therapy (LTOT).Operating pressure range: 200PSI to 3000PSI Drive Smart Dose Mini Auto Adjusting Oxygen Conserver senses patient breath rate and turn oxygen flow up and down as needed, within seconds. It is intended as a delivery device for medical-grade oxygen from high-pressure oxygen cylinders.Operating pressure range: 500 to 3000 PSI. Smart Dose is more powerful as compare to Drive Chad.


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Due to the hygienic nature of some items, they are non-returnable. The items listed below are non-returnable:

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You can submit a return request by logging into your account. You will receive the Return Authorization Number (RA#) details in the email within 2-3 business days.

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