A single use, self-contained, self-powered disposable oximeter, in the form ofa patch or a bandage strip, has mounted thereto a light emitter and a lightsensor that together measure at least the SpO2 of the patient. Mounted to anelectronics layer of the patch is an application specific integrated circuit(ASIC) that has electronics integrated thereto that controls the operation ofthe light emitter and light sensor, and the algorithm for calculating from thedata collected by the sensor at least the SpO2 of the patient Optionally, adisplay and an alarm may also be mounted or embedded onto the patch forrespectively displaying at least the SpO2, and for informing thecaregiver/patient that at least the SpO2 is not within an acceptable range, ifsuch is the case.
