ALEXANDRIA, Va., Feb. 19 -- United States Patent no. 12,226,253, issued on Feb. 18, was assigned to CIMON MEDICAL AS (Trondheim, Norway).

"Ultrasound blood-flow monitoring" was invented by Hans Torp (Trondheim, Norway) and Torbjorn Hergum (Os, Norway).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention provides a method of monitoring blood flow in a vertebrate animal subject. Unfocussed plane-wave ultrasound pulses are transmitted into the subject, along a transmission axis, from a single-element ultrasound transducer (2) fastened to the subject (5). Reflections of the ultrasound pulses are received, generating a succession of pulse-Doppler response signals over time. Each pulse-Doppler response sign...