US Patent Issued to XHALE ASSURANCE on Jan. 20 for "Methods and systems for monitoring cardiorespiratory function using photoplethysmography" (Massachusetts Inventor)

ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,527,491, issued on Jan. 20, was assigned to XHALE ASSURANCE INC. (Gainesville, Fla.).

"Methods and systems for monitoring cardiorespiratory function using photoplethysmography" was invented by Michael Stahl (Somerville, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided according to embodiments of the invention are methods, devices and systems for monitoring respiration. Methods described herein include isolating an isolated DC component signal stream, and optionally an isolated AC component signal stream, from the raw PPG signal; calculating a waveform parameter using at least a portion of the isolated DC component signal stream, and optiona...