Device for early diagnosis of blood clots.

Development and implementation of a non-invasive device for early diagnosis of blood clot formation in the body. The basis of thrombus formation lies in increased blood density and decreased blood flow speed. A simultaneous deviation of both indicators from the norm signals a real risk of a blood clot. My gadget works on the principle of photoplethysmography: a light emitter passes rays through the body, and a receiver captures the absorbed light to calculate the amount of hemoglobin. We used two measurement methods: transmission (on the earlobe) and reflection (on the finger), confirming their reliability in practice. The device uses three types of wavelengths: red, infrared, and green — for oxy-, deoxy-, and carboxyhemoglobin. The main goal is to determine total hemoglobin in quantitative terms rather than as a proportion. By comparing light absorption at different wavelengths, I use a formula to calculate the total amount of hemoglobin, and from it — hematocrit and red blood cells, which indicate blood density. To measure blood flow speed without ultrasound, specialists, or a clinical setting, I measure the pulse wave velocity through its correlation with blood flow speed. I also used machine learning (Claude) to automatically convert the residual light into quantitative indicators.