GrabCAD 模型信息
Team Positive Pressure (Ventilator Mk. 1) · 模型 255765
*READ ME: Please Check Out Our Project Proposal* CAD Assembly Name: FullCAD.ASM Description: The device works by receiving an input via the touchscreen display from the doctor as to which ventilator mode and adjustable parameters to take. This input is processed by a Raspberry Pi, which then actuates the delivery of room air and supplemental oxygen to a piston cylinder. Timing for the actuation of the pinch valves controlling these inputs determine the fraction of inspired oxygen (FiO2) being delivered to the patient. This proportion is tuned to reach the desired amount based on a reading from an O2 sensor in the inspiratory line. Once the mixture is in the cylinder, the piston head compresses by action of a crankshaft-style mechanism driven by a stepper motor. This compression forces the air mixture into the inspiratory line. We can control how much volume of air is delivered by how much the piston displaces while the inspiratory valve is open. We can also control pressure by lowering the piston head to whatever volume in the piston we’d like while holding the inspiratory valve closed. This allows us to support both pressure and volume control. A custom pressure relief valve keeps the inspiratory line under 60 cm H2O. The air eventually makes its way through a filter, and into a y-valve connecting the expiratory and inspiratory line to tubing connected to the ET tube. After the y-valve and before the ET tube, the mixture flows through a custom venturi tube flow meter that records the pressure, flow rate, and tidal volume of the air before it enters the patient. This venturi tube flow meter also enables the ventilator to detect a pressure drop when the patient is initiating a breath, thus allowing the ventilator to support spontaneous ventilation. After inhalation is completed, a pinch valve in the expiratory line opens allowing gases in the line to escape through a custom positive end-expiratory pressure (PEEP) valve. By: Ed Chung, Prerna Gupta, James Ho, Jasmine Kamdar, Ali Kight, Aditya Sudhakar, Chen Chia (Charles) Wang, Jinfay Yuan
- 格式
- SOLIDWORKS、STL、STEP / IGES、Rendering、Other
- 分类
- 3D printing、Components、Tech
- 标签
- covent19round12020、challenge、covent、ventilator、mechanical
- 数据更新
- 2026-10-27T08:56:25Z