The HDVent EmergencyVentilator System is a low-cost, emergency resuscitator for patients suffering from COVID-19.

HDVent System showing the full set-up: Ambu bag + breathing circuit, mechanical arms and custom housing with the control interface, monitoring unit displaying important parameters over time, settings, and alarms.

The HDVent system was developed by a group of technicians, physicists, anesthesiologists from Heidelberg University, and IT professionals from Rommelag iLabs in Karlsruhe, in March 2020 to avoid a local emergency situation caused by coronavirus disease.

HDVent architecture

The air supply consists of an Ambubag connected to the intubated patient + standard valves.

On-board sensors measure the pressure and the in- and outflow rates near the patient mouth piece.

The Ambu is compressed between two mechanical arms shaped to reduce wear and tear effects.

The user interface provides easy access to and control over the ventilation parameters .

All electronics are implemented on a custom-made PC board mounted to the front panel.

A monitoring unit based on a Raspberry Pi computer displays volume and pressure time traces, settings and alarms.

HDVent concept

compatible with mass production
requires only modest machining capabilities

durable over several hundred thousand ventilation cycles
suited for ventilation over two weeks or more

intuitive operation for medical staff or even untrained personnel
user errors prevented by design

materials cost below 500 USD
suited for mass-scale production and developing countries,

An open-source project

The design is fully available here as an open-source project to help developers worldwide fight the worst impact of the coronavirus and future pandemics. We encourage interested developers to reach out for further details.

Warning: The materials on this website represent academic research and are intended for interested developers only. No clinical testing has been done and the device is not approved for patient use.
Do not use on human subjects.