The main advantage of the Oxitone sensing platform is that it works without the need for an irritating fingertip sensor or chest strap: all sensors are embedded into a conventional watch-like enclosure. What makes Oxitone different?
It is relatively easy to calculate pulse oximetry parameters from the signals taken at the fingertip or one’s forehead where these signals are clean due to a high blood perfusion. However, it is a very complex task to perform when biosensors are placed at one’s wrist. Moreover, it becomes even more complicated when the person performs any physical activities since motion artifacts distort the weak pulse signal so that the blood pulsation can hardly be seen.
The core of conventional pulse oximetry technology is exploiting a pulsatile change of the local arterial blood volume. Red and infrared light propagating through the tissue is being partially absorbed and can be measured by a detector. The amount of absorbed light depends on the instantaneous blood volume which changes with each heartbeat.
The main inherent problem of the current technology is that it is applicable only at a limited number of body sites characterized by high blood perfusion such as fingertips, finger roots, ear lobes and nose. Other more convenient body sites like the wrist are either not transparent optically, characterized by weak blood perfusion or affected by huge motion artifacts.
The secret source of the Oxitone technology is a patented unique pulse oximetry sensors which detect the same amount of physiological information at wrist as conventional fingertip probes.
An intelligent algorithm identifies and process the optical information that enables to track a patient vital signs with precise resolution.