Wearable devices have found widespread application in recent years as consumer electronics for sports and health tracking. A metric of health which is overlooked in currently available technology is the measurement of oxygen in living tissue, a key component in the cellular energy production. We report on the development of an optical wireless wearable prototype for transcutaneous oxygen monitoring based on the phosphorescence emission of a highly breathable oxygen sensing film. The device is truly wearable, weighs under 20 grams,is completely self-contained, requires no external readout electronics and is highly sensitive to oxygen in the physiological range.
We have developed different portable tools based on phosphorescence lifetime and intensity measurements to be used together with syringes, needles, and catheters to measure oxygen partial pressure deep inside tissue with the aim to improve the assessment of acute compartment syndrome (ACS). Due to their portability and universality, the tools will also be useful in other hypoxia-related conditions such as vascular diseases, diabetic wounds, cancer, and traumatic injuries. We will present designs as well as results from in vivo porcine model studies.