ALEXANDRIA, Va., April 21 -- United States Patent no. 12,605,054, issued on April 21, was assigned to Olympus Corp. (Tokyo).

"Endoscope and endoscope system" was invented by Kazuya Sasaguchi (Hachioji, Japan), Soichi Ikuma (Akishima, Japan), Eijiro Sato (Hachioji, Japan) and Hiroki Kazuno (Kodaira, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An endoscope includes an insertion portion that is inserted into a subject, and a suction channel that suctions a liquid along with a crushed calculus. The suction channel includes a channel main body, which is inserted in the insertion portion, and a small-diameter channel portion that is provided on a distal end side of the channel main body and has an inner d...