Purdue MIND Vent

Hi! We are a team primarily composed of students in a Purdue biomedical engineering club, and also have two Clemson engineering students on the team as well. ***Edit 1: We are dealing with finals week right now and we had to rush to get this model out, SEVERAL components are not properly aligned nor have proper joints. Also the transducers I forgot to include, but I have the CAD file for. Still working on revisions in these busy times! ***EDIT 2: There are ALOT of files for models we created in this and also used from online, I will try to upload individual files as I get more time or as requested, Thanks! Our design utilizes inspiration from a 4 stroke engine, where we utilize a lead screw in a piston. We believe this innovative approach can easily meet all the requirements needed for a ventilator due to so many machine design adjustments. Our design is centered around providing ventilation in an efficient way without the utilization of Ambu bags in order to achieve higher precision and adjustment. Our design consists of a flow set up as shown in images. The device will start its process by utilizing air and oxygen line hookups in the rooms attaching them to our device at two inlet valves. Next, the air to oxygen ratio will be controlled via a servo mixer. It is a very simple piece, just a standard servo creating blockage ratios in lines of air and oxygen. After the air and oxygen are put through the mixer, they enter the shaft of our device. The shaft is where our device design is unique because we utilize a design similar to a 4-stroke engine as shown in Figure 2. Our design consists of a shaft and piston controlled by a stepper motor. The inlet and outlets are controlled with simple CAMs as shown in Figure 3. First, we have a mixture of oxygen and air going into the main body of the shaft. The piston is lowered at this state to create negative pressure inside which helps pull in the mixture. Next, the inlet valve closes and the outlet valve opens, which leads to