US Patent Issued to Stryker on Nov. 11 for "Facilitating assessment of blood flow and tissue perfusion using fluorescence-mediated photoplethysmography" (Canadian, American Inventors)

ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,465,229, issued on Nov. 11, was assigned to Stryker Corp. (Portage, Mich.).

"Facilitating assessment of blood flow and tissue perfusion using fluorescence-mediated photoplethysmography" was invented by Robert W. Flower (Hunt Valley, Md.), Robert Anthony Stead (Vancouver, Canada) and Arthur E. Bailey (North Vancouver, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods and systems for facilitating assessment of blood flow in a tissue volume of a subject are disclosed. In some variations, the method may include: after a predetermined amount of a fluorescence agent has been administered to the subject, exciting the fluorescence agent in the tissu...