A Long-Lifetime, Low-Cost Self-Tuning Patch Oximeter for Ventilation Therapy

This paper describes a new patch oximeter architecture that automatically selects the best sampling site within a patch array of sensors. This array allows for non-obtrusive chronic care. Sensor triads composed of 2 emitters and a photoreceptor are laid out on a surface that, with the aid of a microcontroller, automatically selects the best signal amplitude domain available on the skin. The data is slated for use with oxygen therapy and ventilators. We show, not only that we can extract pulse, oximetric data with clinical value, but also improved longevity of such devices, making the design practical in a variety of clinical settings.