We want to thank the whole community for participating in this challenge. We had fantastic entries in this challenge and we were very impressed with all the submissions but its time to show you the top finalists of the challenge!
The ventilator’s pneumatic system leverages the compressed air and oxygen already within a hospital room to minimize mechanical complexity and material fatigue. The flow from each line (air, O2) is controlled via solenoid valves into a 700cc, custom made, gas blending chamber equipped with O 2 and pressure sensors. The combined flow is then regulated (to enable gentle delivery) via a proportional solenoid valve through a pressure sensor, a flow sensor, a pressure relief valve, and a hygroscopic condenser humidifier and filter (HCHF) to the patient.
The CORE-Vent has a novel bellow-driven approach. By extended the bellows system so that it can contain up to 8L of air. This allows for a ‘continued’ stroke during the expiration phase that maintains a set PEEP. The system can easily and accurately monitor the volume and pressure due to its positional control and pressure sensors.
This piston-based ventilator consists of readily available COTS parts from common vendors and 3D printed components. The 3D printed parts are made from PLA, a commonly available, inexpensive, non-toxic filament and can be printed on basic at-home 3D printers.
This ventilator’s most specialized parts include a high-performance fan found commonly in sleep aid devices, as well as pressure sensors and an STM32 microcontroller. The remaining parts consist of standard tube and pipe fittings, laser-cut panels, power electronics, and the device’s case. By using software controls for the fan, our design can produce a full range of ventilation features while offering the simplicity of construction found in lower-functionality ventilators.
A simple ventilator built with just two off-the-shelf components: a proportional solenoid
valve and a microcontroller (and a pressure relief valve for safety). The microcontroller modulates the valve to control the flow to the patient.
This ventilator is driven by an electric motor that transmits the movement through a rack and pinion to a piston-plunger system, responsible for pumping with the desired FiO2. The system has been designed in a modular way, which allows easy construction and repair of the device with commercial elements easy to get and that it is possible to build and repair it with basic tools by any person following the construction and use manuals.
This ventilator design maximizes use of Stratasys’ advanced polyjet printing technologies and library of materials for optimized assembly. Combining outer shell and housing, the unit leverages multi-material and multi-color printing functionality to include a built-in gasket, built-in mixing tank for air, venting, fasteners for assembly, and even exterior UI details like buttons and icons