ROAERA V2 Ventilator COVID-19

Last crawled date: 2 years ago

This is an updated version of ROAERA V1 which was made by Stefan Badulescu. This time we present a modular assembly, where the main structure is made of laser-cut acrylic plates. The intention is that the whole structure is much easier and faster to manufacture at a lower cost. Even more so easy and compact to transport and assemble. We would estimate 1 hr maximum time for the assembly of the product. The device holds the same principle as in the first prototype.
Problem Statement: Because of the novel Corona Virus (that causes COVID – 19), a mass of patients suffers from respiratory problems, and consequently they must be intubated. This resulted in a high demand for respiratory devices around the world. A mechanical ventilator is meant to force air into a patient via a tube which passes into the trachea and has an inflatable cuff which sits below the vocal cords creating a seal(source : https://www.hopkinsmedicine.org/tracheostomy/living/speech.html)
ROAERA is meant to be a be a low resource 3D printable device that can substitute professional medical ventilators for mild cases of pneumonia. ROAERA concept was designed by using a novel compact principle, using a pulley as a main feature for the angular displacement motion. The tube is placed between the two parts that form a claw-based design which can grasp and compress the tube with the aid of a motor. The stepper motor together with the microcontroller and power source are placed on top. When activated the motor pulley rotates, wrapping the cable around the pulley which creates pulling motion which further results in an angular motion in the system that compresses the air tube. For the negative pressure, the stepper motor releases the cable, therefore unwrapping the cable, making the upper to return to the initial position. From the controller, the cycles can be adapted to the need of the patient.
Disclaimer: This project presents possible solutions that might be further developed. It is not by any means a finalized product. The process of development is still in progress in the mechanical area. Furthermore, we are aware of how difficult and complicated a medical ventilator actually is, that is why we keep a great focus on motor control, pressure parameters, tidal, patient monitoring and all the elements that contribute to good functioning. We would like to implement as many CE marked elements.

Credit for the Engineers who contributed to this project:
Erick Monserrat, Laura Loaiciga, Cosmin Constantin, Mihai Radoi, Ioan Radu