ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,558,528, issued on Feb. 24.

"Drainage device comprising a filter cleaning device" was invented by Peter Forsell (Bouveret, Switzerland).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for removing particles from a bodily fluid in a patient with a filtering device, the filtering device being implantable in the patient's body and the method comprising the steps: pass bodily fluid of the patient through a tube forming a main fluid, filtering the bodily fluid passing through said main fluid passageway with a filter connected to the tube, collecting particles in the bodily fluid to be removed passing through the tube, and cleaning the filter with a fi...