1. Common components in a pulse oximeter includes light source, light detector, microprocessor, and a power source. Background Objectives Specifications Assembly Final Design MaterialsTesting Future Work Conclusions Acknowledgements Ring Pulse Oximeter Michael Djaja, Cassie Hamilton, Bob Loth, MyLan Truong Specification Test Results Durability A thickness of 6mm  very thin  easily broken apart A thickness of 18mm  proved to be durable Adjustability Embedded 3D print  more structural support  adjustable (can stretch 1.5cm) Accuracy Tested on 20 people  ± 2% difference from finger tip placement Accurate – Pulse Oximeter casing must not interfere with accurate readings Simplicity – Aesthetic design must be simplistic; monochromatic, single interface. Cost – Overall material and production cost must be under $100. Durable – Device must withstand shake and being dropped. Adjustable – Must be able to fit various body types. To proceed toward a more compact design, smaller components need to be integrated into the prototype. A smaller power supply, such as an inexpensive watch battery, could be integrated into the design Using a wifi-enabled mini-Arduino, the ring could communicate with a wristband which would display real time blood oxygenation. The ring could also communicate with a smartphone app which would process the absorption data. Estimated future design cost: Activity Trackers are turning medical readings such as heart rate, activity levels, and caloric use into user accessible information for daily monitoring aimed at improving health. Market need: way to monitor oxygen saturation levels while exercising or undergoing daily activity. A healthy oxygen saturation is at least 95% Adopted from John Hopkins Medicine Design a ring pulse oximeter that will be able to track blood saturation levels during daily usage. and deviations may be used to monitor for conditions such as heart attack, congestive heart failure, chronic obstructive pulmonary disease or asthma. Professor - Dr. Robert Crockett ; Malia Waddell Special Thanks to: Alles Rebel Proof-of-Concept prototype ItemCost Wires$10 Market Pulse Oximeter $24 Dragon Skin $3 /part $30 total (kit) ABS $0.30 (Provided by BMED department) Alginate $ 1 /part $5 total kit ItemCost Watch Battery$3.29 Mini Arduino$6.95 Dragon Skin$3 /part ABS$0.30 Photodiode + LED$6.50 + = + = The final prototype verified our design concept of a ring pulse oximeter. Accurate readings can be taken through the finger at the proximal phalange and this design has the potential to be developed into device which would be successful in a range of markets. Casing Design: While the initial design started as a basic ring, it went through many iterations to accommodate the pulse oximeter and design requirements. A market Pulse Oximeter was used to get accurate readings. It was altered to allow the sensors to fit into the ring design without the size restrictions of the battery and processor. → reconfigurations Multiple iterations Pulse Oximeter Alteration: Phase 1 Phase 2 Phase 3 Phase 4 Design allow for accurate readings Durable casing