DESIGN PROCESS
Overlappping Glucose and Cholesterol Oxidase Layers
In the bands of the device, we rejected the idea of having the glucose oxidase and cholesterol oxidase stacked on top of each other. This is because if the enzymes overlapped, the glucose and/or cholesterol molecules might not go directly to its corresponding enzynme. As a result, the device might not be able to track the accurate amount of glucose and cholesterol. Instead of this feature, we decided to have the glucose oxidase and cholesterol oxidase be adjacent to each other. This would be better than having them stacked on top of each other since there wouldn't be any interference of the two molecules.
Removable Skin Pads
We rejected our original idea of having a removable skin pad that would be attached to the bands of the watch. This is because it would be too costly, time consuming, and tedious for the consumers. In addition, if the customer was too lazy or forgot to replace the skin pad, it may cause skin injuries. Therefore, we made it so that the contents of the skin pad, which are the sensors with all the enzymes, the voltage bias, the electrode panel, anode, and cathodes be embedded in the bands of the device itself. This would be better than having the removable skin pad since the customers woudln't have to pay an extra recurrent fee and we wouldn't have to risk the customer's health.
Measuring all Molecules
We rejected the idea of testing all the components of a regular blood test. This is because some of the molecules that a regular blood test would measure, including complete blood count, triglycerides, hemtocrite, platetes, creatinine, and tropine, can't be extracted from the human body without using blood. As a result, we decided to not test them to prevent any blood loss. This would be better than testing everything since we would have to puncture the skin, which defeats the purpose of our device.