Patent ID: 8672952
Filing Date: 2014-03-18
Classification: A61B,F16C

Abstract:
1. A medical treatment tool comprising: a sheath-like member having a distal end, a proximal end and an inner bore extending along a longitudinal axis between the distal end and the proximal end; an end effector which is provided on the distal end of the sheath-like member; a control wire which is inserted into the sheath-like member for controlling the end effector, and connected to the end effector; a rotation control section which rotates the end effector following the rotation of the sheath-like member, the rotation control section comprising a first engagement section provided on the distal end of the sheath-like member and a second engagement section provided on the end effector, and controlling the rotation of the sheath-like member with respect to the end effector by the engagement of the first engagement section and the second engagement section; and a rotatable coupling which is provided between the end effector and the control wire, and which couples the control wire with the end effector in a relatively rotatable manner about a longitudinal axis of the control wire, wherein, when the end effector is rotated with a rotation of the sheath-like member through the rotation control section, the end effector is rotated relatively with respect to the control wire through the rotatable coupling.