Affordable Pulse Oximeter for Accurate Readings in Low Perfusion Individuals

Overview

Conventional fingertip pulse oximeters have limited accuracy for people with poor circulation. More accurate fingertip pulse oximeter models are very costly, making them an unrealistic expense for most individuals. The goal of this study was to design, build, and test an affordable, novel device that can accurately calculate the blood oxygen levels of individuals with poor circulation. The electronic component of the device was built using an Arduino Nano R3 and MAX30102 Sensor. The case of the device was designed in Autodesk® Fusion 360™ and constructed using a 3D printer. To evaluate the Armband Pulse Oximeter Device’s performance, it was compared to a traditional fingertip pulse oximeter during participant testing trials. It was hypothesized that the device would perform equivalent to or better than the fingertip pulse oximeter. During participant testing trials, the SpO2 reading given by each pulse oximeter and the amount of time it took to produce a valid reading after the calibration period were recorded. The data collected were analyzed to determine if there was a significant difference between the SpO2 readings and time values through a two-tailed t-test using two samples of unequal variance. Overall, while the limitations of the study prevented a determination from being made about the device’s ability to meet the engineering goal, it was shown to fulfill the hypothesis. The future of this research centers around modifying the device’s design to increase its functionality and reliability as well as continuing testing to determine the device’s accuracy in people with poor circulation.

Competition history

• AJAS 2024 Category not listed

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