公开(公告)号：US20230200887A1

公开(公告)日：2023-06-29

申请号：US18170824

申请日：2023-02-17

Applicant: Olympus Corporation

Inventor： Akira MIYAZAKI ,  Hiroyuki Takayama ,  Daisuke Yanagi ,  Kazuhiro Tanaka ,  Ojiro Kitamura ,  Tomoyuki Takashino

IPC: A61B18/14

CPC classification number: A61B18/1445 ,  A61B18/1492

Abstract: A treatment tool includes: an insertion tube; a distal end part that is provided at a distal end of the insertion tube; a shaft that is provided in the distal end part and that includes an outer circumferential surface; and a pair of transmitters each of which is inserted into the insertion tube and is fixed to the distal end part, the pair of transmitters being configured to transmit a drive force that causes the distal end part to flex with respect to the insertion tube, each transmitter being arranged along the outer circumferential surface with the shaft being sandwiched between the pair of transmitters and, on a distal end side with respect to the shaft, the pair of transmitters extending in a state of being separate from each other in a distance smaller than a diameter of the outer circumferential surface of the shaft.

公开(公告)号：US11141234B2

公开(公告)日：2021-10-12

申请号：US16417728

申请日：2019-05-21

Applicant: OLYMPUS CORPORATION

Inventor： Hiroyuki Takayama ,  Noriaki Yamanaka

IPC: A61B34/00 ,  A61B34/30 ,  B25J18/06 ,  F16H19/00 ,  F16H19/02

Abstract: A bending mechanism includes: an elongated support member; a swivel that is supported at a distal end of the support member so as to swivel around an axis that intersects a longitudinal axis of the support member; a transmitter that are arranged along the longitudinal axis of the support member, transmits a driving force applied at a proximal end thereof, and makes the swivel swivel relative to the support member; and a regulator that regulates stress generated in the transmitter at each swivel position of the swivel with respect to the support member such that the stress does not exceed a prescribed threshold.

公开(公告)号：US12102404B2

公开(公告)日：2024-10-01

申请号：US16854087

申请日：2020-04-21

Applicant: OLYMPUS CORPORATION

Inventor： Hiroyuki Takayama

IPC: A61B34/00 ,  B25J1/02 ,  B25J9/10

CPC classification number: A61B34/71 ,  A61B34/70 ,  B25J1/02 ,  B25J9/10

Abstract: A bending mechanism includes: an elongated support member; a swivel that is pivotably connected to a distal end of the support member; a first link that can transmit a driving force applied at the proximal end, to make the swivel pivot with respect to the support member; a second link that can transmit a driving force applied at the proximal end, to make the swivel pivot with respect to the support member; and a connector that is provided on at least one of the first and second links and that can switch the coupled state of one of the first and second links when a pivoting angle of the swivel exceeds a threshold such that the permissible stress of the one of the links has become less than the permissible stress of the other.

公开(公告)号：US11745361B2

公开(公告)日：2023-09-05

申请号：US16709313

申请日：2019-12-10

Applicant: OLYMPUS CORPORATION

Inventor： Kayuri Kimura ,  Shuya Jogasaki ,  Hiroyuki Takayama ,  Noriaki Yamanaka

IPC: A61B17/062 ,  B25J15/08 ,  A61B34/00 ,  B25J17/02

CPC classification number: B25J15/08 ,  A61B17/062 ,  A61B34/71 ,  B25J17/025 ,  B25J17/0241

Abstract: A joint structure of a manipulator includes: swiveling members that are coupled so as to be able to swivel via a rolling contact; shafts that constitute bending joints between the swiveling members and that are parallel to each other; pulleys that are rotatably supported about the shafts; and a connector attached to the shafts so as to be able to swivel about longitudinal axes of the shafts. The connector includes supports that are disposed on axial ends of the shafts so as to sandwich the pulleys therebetween in a direction of the longitudinal axis, and a beam that extends in between the supports to couple the supports to each other.

公开(公告)号：US11383376B2

公开(公告)日：2022-07-12

申请号：US16680715

申请日：2019-11-12

Applicant: OLYMPUS CORPORATION

Inventor： Hiroyuki Takayama

IPC: B25J9/10 ,  B25J17/02 ,  F16H35/10 ,  A61B34/00

Abstract: A bending mechanism includes: a support member; a pivoting member supported at a distal end of the support member to be pivotable about an axis intersecting the longitudinal axis of the support member; a link disposed along the longitudinal axis and transmitting a force applied at a proximal end thereof to cause the pivoting member to pivot; and an adjuster adjusting stresses in the link so as not to exceed a threshold, at each pivoting position of the pivoting member with respect to the support member. The link includes a first member connected to the pivoting member and a second member disposed closer to the proximal end than the first member is. The adjuster includes a movable member moving in predetermined direction when the first and second members are relatively moved, and a spring biasing the movable member in such direction as to prevent the movement of the movable member.