A Bilevel Non-Invasive pressure support and peep device, with minimal aerosolization. This solution consists of the following components:
A blower option is now being engineered to provide high volume, low pressure air to the regulator. Oxygen will be injected into the patient supply via a standard wall oxygen flow meter and O2 concentration will be O2 flow dependent. This will allow use of the device in places without medical air and eliminates the need for costly O2/air blenders making it suitable for most low-resource hospitals.
The design of this unique reciprocal valve was the challenge set to the team to solve as it allowed switching between inspiration pressure support and PEEP support on expiration and offered an advantage over standard CPAP and oxygen support.
The shape of the surfaces, strategically placed airflow ducts and volume symmetry have allowed for a support device that offered what we required.
- With expiration the pressure in the mouth-piece increases pressing the spool backward.
- This shuts off the inlet port and simultaneously opens the outlet port to the PEEP device allowing the patient to exhale against the adjustable PEEP.
- At the start of inspiration, the pressure in the mouthpiece drops, causing the spool to move forward. This movement closes the PEEP outlet and opens the inlet allowing the air/oxygen mixture to be supplied to the patient at a higher pressure.