ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,697,431, issued on Aug. 4, was assigned to BECTON DICKINSON AND COMPANY (Franklin Lakes, N.J.).
"Split piston metering pump" was invented by Kenneth Focht (Needham, Mass.), Joseph Gordon (Mansfield, Mass.), Matthew J. Perry (East Greenwich, R.I.) and Justin Fisk (Franklin, Mass.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A micropump according to the invention uses axially oriented pistons to define a pump volume. Translating the pistons axially with respect to each other within a pump housing draws a metered amount of fluid into the pump volume from a reservoir port for delivery to a cannula port when the space is collapsed. Radially situated seals o...