公开(公告)号：US20210353131A1

公开(公告)日：2021-11-18

申请号：US17386664

申请日：2021-07-28

Applicant: OLYMPUS CORPORATION

Inventor： Hidetoshi SAITO

IPC: A61B1/005

Abstract: To achieve an accurate bending operation in a specific direction on a joystick-type bending lever, an endoscope includes: a bending operation mechanism including a bending lever configured to be tilted in all directions including a first direction, a second direction, a third direction, and a fourth direction corresponding to bending directions in up, down, left, and right directions, respectively, of a bending portion; a long hole provided in the bending operation mechanism, and an engagement pin provided on an operation portion and configured to engage with the long hole. The engagement pin is guided into the long hole and the bending operation mechanism is supported such that the bending operation mechanism is movable relative to the operation portion.

公开(公告)号：US20210353133A1

公开(公告)日：2021-11-18

申请号：US17391766

申请日：2021-08-02

Applicant: OLYMPUS CORPORATION

Inventor： Hidetoshi SAITO

IPC: A61B1/005

Abstract: An endoscope includes: an insertion portion including a bending portion; a lever configured to be capable of, by being tilted, pulling a bending operation wire that bends the bending portion; and a bending operation mechanism including a play part configured to, when the lever is tilted in a predetermined direction, maintain the bending portion in a state of not bending, up to a predetermined tilting amount. The bending operation mechanism includes a sub-rotation pivot provided at a position that is away in an axial direction of the lever from tilting supports of the lever in the respective tilting directions and configured to tilt the lever in a predetermined direction, and a stopper configured to, when the lever is rotated by a predetermined angle via rotation of the sub-rotation pivot, stop the rotation of the sub-rotation pivot through abutment with the lever.

公开(公告)号：US20210127950A1

公开(公告)日：2021-05-06

申请号：US17122317

申请日：2020-12-15

Applicant: OLYMPUS CORPORATION

Inventor： Nobuaki AKUI ,  Hidetoshi SAITO

IPC: A61B1/005 ,  A61B1/06 ,  A61B1/018 ,  A61B1/00

Abstract: An endoscope includes an insertion portion, a distal end rigid member, and a channel tube. The distal end rigid member is provided on a distal end side with respect to the bending portion of the insertion portion, and includes an illumination window, an observation window, and a treatment instrument opening. As the distal end rigid member moves relative to the bending portion in a distal end direction of a longitudinal axial direction, the distal end rigid member can change from a first state in which a distance between a proximal end surface of the distal end rigid member and a distal end surface of the bending portion is fixed to a first distance to a second state in which the distance is equal to a second distance longer than the first distance.