ROAERA V2 Ventilator COVID-19

grabcad

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 composed of laser-cut acrylic plates that work together seamlessly to make manufacturing faster and easier at a lower cost. It's also incredibly easy and compact to transport and assemble, with an estimated 1 hour maximum time for the assembly process. The device retains the same principle as in the first prototype. Problem Statement: Due to the novel Corona Virus (which causes COVID - 19), a large number of patients suffer from respiratory problems, leading them to be intubated. This resulted in a high demand for respiratory devices worldwide. A mechanical ventilator is designed to force air into a patient via a tube that passes through the trachea and has an inflatable cuff that sits below the vocal cords creating a seal (source: https://www.hopkinsmedicine.org/tracheostomy/living/speech.html). ROAERA is intended as a low-resource, 3D printable device that can substitute professional medical ventilators for mild cases of pneumonia. ROAERA's concept was designed using a novel compact principle, featuring a pulley as the main feature for angular displacement motion. The tube is placed between two parts that form a claw-based design which can grasp and compress the tube with the aid of a motor. The stepper motor, microcontroller, and power source are all situated on top. When activated, the motor pulley rotates, wrapping the cable around it to create pulling motion that results in an angular motion in the system that compresses the air tube. For negative pressure, the stepper motor releases the cable, causing it to unwrap from the pulley, making the upper part return to its initial position. From the controller, cycles can be adapted to meet the patient's needs. Disclaimer: This project presents possible solutions that may evolve further. It is not a finalized product by any means, and development in the mechanical area continues in progress. We are aware of how complex and challenging medical ventilators truly are, which is why we maintain focus on motor control, pressure parameters, tidal volume, patient monitoring, and all elements contributing to good functioning. We aim to implement as many CE marked features as possible. Credit goes to the engineers who contributed to this project: Erick Monserrat, Laura Loaiciga, Cosmin Constantin, Mihai Radoi, Ioan Radu.