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.