Embedded Files
The Hyperbaric-Safe Spirometer is composed of two easily separable parts: the flow tube and the housing. The housing encases all the electrical components. The air exhaled by the patient goes through the flow tube. Both parts can be 3D printed. The flow tube is meant to be 3D printed out of Nylon so it can be put in an autoclave for sterilization. At 8.5 x 3.3 x 2.7 inches the device is a handheld size. CAD estimates the device would weigh about 0.53 lbs, so it is also lightweight.
CAD ModelS
CAD ModelS
Flow Tube
Housing: Interior
Housing: Underneath
Housing: Exterior
Housing: Interior with Electrical Components
Video of Flow Tube
Video of Housing Assembly
Microprocessor Schematic with sensors
Microprocessor Schematic with sensors
Current Consumption
Current Consumption
This pie chart shows the different components used in the spirometer and their relative current consumption based on the data given in the below Power Log. The Arduino Genuino Uno and the LCD Display consume the most current.
Power Log
Power Log
This table shows the operating current consumption and coordination Amp-hour calculation based on a 5 hour procedure with a 5 volt source. These values are based on the component data sheets included in the references.
External Battery
A 9V battery was chosen to power this device. It is easily exchangeable and can last 500 mA-hours which is almost 7 five-hour procedures.
Demonstration Video
Demonstration Video
The demonstration video shows how the device would be used in a clinical setting.
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