ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,508,417, issued on Dec. 30, was assigned to ECP ENTWICKLUNGSGESELLSCHAFT MBH (Aachen, Germany).

"Fluid pump changeable in diameter, in particular for medical application" was invented by Reiner Liebing (Aachen, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a fluid pump device, in particular for the medical application, with a compressible pump housing and rotor, as well as with an actuation means which runs in the sleeve and on whose end the fluid pump is arranged. In order to utilize all possibilities of a space-saving arrangement of the respective pump housing of the rotor, which is compressible per se, and as the cas...