US Patent Issued to KL TECHNOLOGIES on April 8 for "Photoplethysmography-based blood pressure monitoring device" (Chinese, American Inventors)

ALEXANDRIA, Va., April 9 -- United States Patent no. 12,268,481, issued on April 8, was assigned to KL TECHNOLOGIES LLC (Honolulu).

"Photoplethysmography-based blood pressure monitoring device" was invented by Jeffrey Thomas Loh (Honolulu) and Puxiang Lai (Hung Hom, Hong Kong).

According to the abstract* released by the U.S. Patent & Trademark Office: "A blood pressure monitoring device includes a wrist strap, a case, and a display. The strap portion is adapted to fasten the device to the wrist without occluding blood flow. At least one sensor modality is arranged within the case for obtaining sensor data from an artery in the wrist. In a preferred embodiment photoplethysmography sensors are incorporated in the case to generate PPG wavefo...