ALEXANDRIA, Va., March 17 -- United States Patent no. 12,575,716, issued on March 17, was assigned to HOYA Corp. (Tokyo).
"Endoscope" was invented by Toshiyuki Katayama (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is an endoscope capable of suppressing the displacement of a movable optical frame due to bending of a bending portion. An endoscope according this embodiment includes an insertion portion that includes a distal end portion, a bending portion, and a soft portion in order from the distal end side, a movable optical frame that is built in the distal end portion and capable of advancing and retreating in an axial length direction of the insertion portion, an operation coil that is co...