公开(公告)号：US20190167239A1

公开(公告)日：2019-06-06

申请号：US16266167

申请日：2019-02-04

Applicant: OLYMPUS CORPORATION

Inventor： Hiroshi OKABE ,  Masahiro FUJII ,  Masatoshi IIDA ,  Yoshiyuki KUMADA

IPC: A61B17/00

Abstract: A surgical-device rotation mechanism according to the present invention includes: a long member; a rotation member rotatably supported by a distal end of the long member and rotates around a longitudinal axis of the long member; an end effector that is fixed to the rotating member; a tension converting member disposed inside the long member along the longitudinal axis and has a distal end to which the rotation member is fixed, and converts tension into rotation around the longitudinal axis; and a rotation restriction mechanism disposed between the long member and the tension converting member and increases or decreases friction between the rotation restriction mechanism and at least one of an inner surface of the long member and an outer surface of the tension converting member so as to restrict or not restrict relative rotation between the long member and the tension converting member around the longitudinal axis.

公开(公告)号：US20190059894A1

公开(公告)日：2019-02-28

申请号：US16170139

申请日：2018-10-25

Applicant: OLYMPUS CORPORATION

Inventor： Yoshiyuki KUMADA ,  Hiroshi OKABE ,  Keisuke TSURIMOTO ,  Kayuri KIMURA ,  Masayuki KOBAYASHI

IPC: A61B17/072 ,  A61B17/28

Abstract: A medical stapler includes a first and a second grippers that are provided so as to be capable of opening/closing with respect to each other, and that can grip tissue therebetween. The first gripper includes a first contact surface being made to come into firm contact with one side of the tissue, and an ejection hole that is provided in the first contact surface and from which a staple is ejected. The second gripper includes a second contact surface being made to come into firm contact with the other side of the tissue, and an anvil portion provided in the second contact surface and having a curved surface that causes a needle portion of the staple to be bent. The first and second grippers are provided so as to allow relative positions thereof to be adjusted in a tangential direction of the curved surface.

公开(公告)号：US20180078256A1

公开(公告)日：2018-03-22

申请号：US15823872

申请日：2017-11-28

Applicant: OLYMPUS CORPORATION

Inventor： Kayuri KIMURA ,  Masayuki KOBAYASHI ,  Yoshiyuki KUMADA ,  Hiroshi OKABE ,  Keisuke TSURIMOTO

IPC: A61B17/072

CPC classification number: A61B17/07207 ,  A61B17/115 ,  A61B17/1155 ,  A61B2017/07228 ,  A61B2017/07271 ,  A61B2017/07285 ,  A61B2017/320052 ,  A61B2090/034

Abstract: A medical stapler including: a first jaw that has a plurality of staples arrayed in a row at intervals; a second jaw that has a second gripping surface that sandwiches living tissue between the second gripping surface and a first gripping surface; and a knife that moves between the first gripping surface and the second gripping surface along the row of staples from the one end of the row to a position extended from the other end of the row of staples, thus cutting the living tissue.

公开(公告)号：US20170296175A1

公开(公告)日：2017-10-19

申请号：US15588046

申请日：2017-05-05

Applicant: OLYMPUS CORPORATION

Inventor： Yoshiyuki KUMADA ,  Kayuri KIMURA ,  Hiroshi OKABE

IPC: A61B17/068 ,  A61B17/064 ,  A61B17/072

CPC classification number: A61B17/068 ,  A61B17/0644 ,  A61B17/0682 ,  A61B2017/0647 ,  A61B2017/07221 ,  A61B2017/07264

Abstract: A medical staple is provided with: a rectangular base portion; and a needle portion that extends from one end of the base portion in a substantially arc shape so as to protrude in a predetermined direction with respect to the base portion, wherein the needle portion has a first bending position that is provided between a base connected at the one end and a distal end, and that yields first when a pressing force in a radially inward direction of an arc shape of the needle portion acts on the distal end, and a second bending position that is provided between the first bending position and the base, and that yields first when the pressing force acts in the vicinity of the base of the first bending position.