Drive CHAD® Evolution™ Electronic Oxygen Conserver

The Drive CHAD® Evolution™ Electronic Oxygen Conserver is the perfect solution for those needing supplemental oxygen. This device is lightweight and easy to transport, weighing only 14.9 ounces with batteries. It is designed to deliver a uniform oxygen pulse at increments from 1 to 7 LPM, plus an additional CF preset at 2 LPM. With its 5:1 savings ratio from 14-40 breaths per minute, the Evolution™ conserves oxygen while providing the necessary dosage for your respiratory needs. It has an operating pressure range from 200-3000 PSI and is designed to sense a breath and deliver oxygen in the first half of the inspiratory cycle. A single push button selects the equivalent LPM dosage settings, and an auto shut-off feature helps conserve battery life. The Evolution™ runs on two AA batteries, providing a minimum of two-year battery life.* The Drive CHAD® Evolution™ Electronic Oxygen Conserver is the ideal choice for comfortable, convenient oxygen therapy.

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^TM 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^TM only administers oxygen at the beginning of inhalation. This makes the oxygen source last longer. The EVOLUTION^TM is designed to be an integral component of a lightweight, long-lasting ambulatory system.

• Low Battery Indicator Light: The EVOLUTIONTM conserver incorporates a visual indicator light that alerts you when a battery change is needed. The following signal will be displayed as your batteries become depleted:
  • Blinking red light - Low battery energy level Replace batteries
• Cylinder Adjustment Handle: This is used to attach the unit to any CGA 870 post-valve cylinder
• Selector Knob: This enables the user to select their prescribed oxygen flow setting. It also enables s/he to select the continuous flow mode setting. The continuous flow mode setting (CF) is designed for emergency use only. The amount of oxygen delivered when using the EVOLUTION^TM in continuous flow mode is preset at 2 LPM (liters per minute) When not in use, the cylinder should be turned off by turning the cylinder valve toggle clockwise.

The CF mode (continuous flow) is a mechanical override designed as a safety feature in case battery power fails. It is set at 2 LPM CF. When in the CF mode, the user can still change the LED display lights by pressing the Selector Button but it has no effect on oxygen output.

CAUTION! In the event that it is necessary to operate the unit in the continuous flow mode, DO NOT obstruct the flow of oxygen from the Oxygen Supply Outlet by placing your finger over the outlet or blocking the flow through the oxygen tubing in any way. Doing so may render the unit inoperable and/or damage the sensor in the unit.

☛ NOTE: Remember that in continuous flow mode, the oxygen will be consumed at a much faster rate. Return to another source before depleting the oxygen cylinder.

• Battery Holder: This compartment holds two (2) AA-size alkaline batteries
• Oxygen Pressure Gauge: This enables the user to monitor the contents of the compressed oxygen cylinder
• Oxygen Supply Outlet: Use this fitting to attach a standard cannula
• Cylinder Alignment Pins: When assembling the unit, these parallel pins must go into the holes on the post valve
• Seal Washer: This creates the interface between the valve and the EVOLUTIONTM conserver Besides offering a rugged interface, it also surrounds the oxygen path in a ring of stainless steel or brass
• Oxygen Inlet Connection: Interface between cylinder valve and conserver that allows oxygen to flow into the regulator.

• Delivers a uniform oxygen pulse at increments: 1, 2, 3, 4, 5, 6, 7 Plus CF preset @ 2 LPM.
• Minimum 2-year battery life* utilizing 2 AA batteries.
• Delivers a 5:1 savings ratio from 14-40 breaths per minute.
• Senses a breath/delivers oxygen in the first half of the inspiratory cycle.
• Operating pressure range: 200-3000 PSI.
• Weighs only 14.9 ounces with batteries.
• Single push button selects the equivalent LPM dosage settings.
• Auto shut-off feature conserves battery life.
• Fits easily in virtually any carry bag.