ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,440,661, issued on Oct. 14, was assigned to ICU MEDICAL INC. (San Clemente, Calif.).

"Medical fluid transfer device" was invented by David Nelson (Irvine, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A check valve for use in a fluid pathway. The check valve may have a diaphragm and a plurality of supports extending from the diaphragm. The check valve and supports have a line of symmetry, and deformation of the check valve as it moves from a closed position to an opened position can be generally along the line of symmetry."

The patent was filed on May 18, 2022, under Application No. 17/663,993.

*For further information, including images, chart...