How a small device called a pulse oximeter measures blood oxygen levels

A pulse oximeter is a device that clips on your finger, toe, or earlobe to measure blood oxygen saturation. Here's how it works and how to read it.
MIT Technology Review

Why engineers are working to build better pulse oximeters

Devices that measure oxygen levels in the blood don’t work as well in people with dark skin. Researchers want to change that. This article first appeared in The Checkup, MIT Technology Review's weekly ...
Monthly Prescribing Reference

FDA Clears MightySat Medical Fingertip Pulse Oximeter for OTC Use

Credit: Masimo. The pulse oximeter is intended for spot-checking of functional oxygen saturation of arterial hemoglobin and pulse rate. The Food and Drug Administration (FDA) has cleared Masimo ...
Business Wire

Masimo Announces the First FDA-cleared “Over-the-Counter” Fingertip Pulse Oximeter

IRVINE, Calif.--(BUSINESS WIRE)--Masimo (NASDAQ: MASI) announced today FDA clearance of MightySat ® Medical, making it the first and only FDA-cleared medical fingertip pulse oximeter available ...
EDN

Pulse Oximeter Design Using Microchip’s Analog Devices and dsPIC Digital Signal Controllers (DSCs)

Pulse oximeter is a non-invasive medical device that monitors the oxygen saturation of a patient’s blood and heart rate. This application note demonstrates the implementation of a high-accuracy pulse ...