Wireless Pulse Oximeter Shares Data with Mobile Devices

An innovative wireless fingertip pulse oximeter enables clinicians to track and trend measurements through smart mobile devices.

The Masimo MightySat Rx Pulse Oximeter provides oxygen saturation (SpO2), pulse rate, Perfusion Index (PI), and Pleth Variability Index (PVI) using Masimo SET measure-through motion and low perfusion pulse oximetry technology. The Bluetooth-enabled device allow clinicians to track and trend up to 12 hours of patient measurements on smart mobile devices, and to share that data via standard comma-separated-value (CSV) files, as well as transfer the data to the Apple (Cupertino, CA, USA) Health app.


The MightySat Rx Pulse Oximeter is intended for adult and pediatric patients, even during motion and low perfusion. Standard features include Signal IQ to assess measurement confidence; a rugged, lightweight design for operation in challenging environments; a long battery life of up to 15 hours with two standard AAA alkaline batteries; and a comfortable design with a silicon finger pad that molds to patients' fingers. The Masimo MightySat Rx Pulse Oximeter is a product of Masimo (Irvine, CA, USA), and has received the European Community CE marking of approval.

“Many clinicians around the world rely on pulse oximetry as the fifth vital sign. To deliver Masimo SET performance in this low-power form factor took some engineering, given the precision of our technology and SET's computationally intensive algorithm," said Joe Kiani, Founder & CEO of Masimo. “We actually dropped the power consumption by nearly two orders of magnitude. But the development effort was worth it, as we expect this technology will empower clinicians and they will no longer have to compromise performance for mobility.”

Conventional pulse oximetry assumes arterial blood is the only blood pulsating at the measurement site. However, during patient motion, venous blood also moves, causing conventional pulse oximetry to under-read since it cannot distinguish between arterial and venous blood. Masimo SET signal processing identifies the venous blood signal, isolates it, and uses adaptive filters to cancel it, extracting the arterial signal in order to report the true arterial oxygen saturation and pulse rate.

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