ALEXANDRIA, Va., June 6 -- United States Patent no. 12,279,847, issued on April 22, was assigned to INTUITIVE SURGICAL OPERATIONS INC. (Sunnyvale, Calif.).

"Sterile channel pre-drape assembly" was invented by Humphrey W. Chow (Cupertino, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus includes a sterile channel pre-drape assembly comprising a plurality of legs radiating from a common center region. Each of the plurality of legs has one or more sterile interior surfaces and one or more outer surfaces. The sterile interior surfaces of a pair of the plurality of legs define a sterile channel that is bounded by the outer surfaces of the pair of the plurality of legs. The sterile channel pre-dr...