Patent ID: 8267958
Filing Date: 2012-09-18
Classification: A61B

Abstract:
1. A surgical instrument comprising a pivotable instrument handle connected to a tube shaft via a first pivotal engaging element at a proximal end of the surgical instrument, and, at a distal end of the surgical instrument, an instrument head linked so as to be bendable, the instrument head having an effector including a second pivotal engaging element that is rotatably supported, wherein said instrument handle has at least a turning knob and a handle lever for operating at least one selected from the group consisting of said instrument head and said effector via gear trains, the turning knob and the handle lever are located along the pivotable instrument handle, and the instrument handle, the turning knob and the handle lever are pivotable together with respect to the tube shaft at the first pivotal engaging element, wherein a clutch which permits an individual zero point adjustment at least over a predetermined pivoting range of said instrument handle is interposed in one of the gear trains effecting the bending motion of said instrument head, and wherein the zero point is a relative position of said instrument handle with respect to said tube shaft in which said instrument head adopts a predetermined bending position with respect to said tube shaft.