This picture shows the process it took for us to get the product we got. It goes through our thought process and how we approached certain things.

In the beginning stages, we first were coming up with our design criteria. Once this was finalized we looked to a similar device for inspiration, the Dexcom G6. From this, we found its flaws and what things did not line up with our design criteria. Then from there, we were able to finalize our requirements for our device.

We then of course considered what our limitations were. This was that interstitial fluid use for glucose readings is still new and being developed. We knew that interstitial fluid was not as readily available as blood, without invasive procedures. And we knew that Bluetooth radiation may be a big concern. However, we had research solutions that counteracted these limitations or worked around them, so we proceeded to consider solutions to the noninvasive method.

From this we chose to use either sweat or tears as the interstitial fluid we would use. Tears were likeable because of how it was more readily available than sweat, but it was not as researched as sweat was. Sweat was the main use since tears would require more certifications as it would be a contact lens and that would need to coincide with ABO-NCLE since it is an eye product. We chose sweat and then went in a cycle of making something and seeing if it worked. If it did, it stayed, if it didn’t, then we cut it out. The process ended when we found the research done on WSNF patches, which became our design for the sensor.

All of this was done using AutoCAD and DigiKey for part research and led to our end product.

Connor Oh