ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,508,070, issued on Dec. 30, was assigned to Olympus Medical Systems Corp. (Tokyo).

"Endoscope treatment tool" was invented by Yusuke Shiota (Machida, Japan), Kotaro Yamada (Tachikawa, Japan) and Hiromasa Kato (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An endoscope treatment tool includes a sheath, a knife, a connecting unit and a body. The sheath includes a first channel opened at a distal end of the sheath. The knife inserted into the first channel, the knife having a second channel extending from a distal end of the knife to a proximal end of the knife. The connecting unit is located inside the sheath, the connecting unit including a cavity...