US Patent Issued on Sept. 22 for "Oximetry using light wavelengths to avoid surgical dyes" (California Inventors)

ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,740,729, issued on Sept. 22.

"Oximetry using light wavelengths to avoid surgical dyes" was invented by Kate Leeann Bechtel (Pleasant Hill, Calif.) and Lester John Lloyd (Orinda, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A tissue oximetry device utilizes at least three or at least four different wavelengths of light for collection of reflectance data where the different wavelengths are longer than 730 nanometers. The three or four wavelengths are utilized to generate a range of reflectance data suited for accurate determination of oxygenated hemoglobin and deoxygenated hemoglobin concentrations. The relatively long wavelengths decrease optic...