Bending operation mechanism for endoscope
AssigneeOlympus Corporation
InventorMasanori HAMAZAKI
Life of this patent
Estimating the term…
Abstract
A bending operation mechanism for endoscope according to the invention includes: a bending operation member to which a bending wire for driving a bending portion of an endoscope, the bending operation member being rotationally operated to pull the bending wire in a rotation direction; a rotator coupled to the bending operation member and configured to be rotationally driven by rotation operation of the bending operation member; a reduction gear mechanism that reduces rotation of the rotator; and a biasing mechanism that applies a biasing force in a rotation direction to an output gear in the reduction gear mechanism.
Claims7
A bending operation mechanism for endoscope comprising:
- a bending operation member to which a bending wire for driving a bending portion of an endoscope is coupled, the bending operation member being rotationally operated to pull the bending wire in a rotation direction;
- a rotator coupled to the bending operation member and configured to be rotationally driven by rotation operation of the bending operation member;
- a reduction gear mechanism that reduces rotation of the rotator;
- and
- a biasing mechanism that applies a biasing force in a rotation direction to an output gear in the reduction gear mechanism.
A bending operation mechanism for endoscope comprising:
- a bending operation member to which a bending wire for driving a bending portion of an endoscope is coupled, the bending operation member being rotationally operated to pull the bending wire in a rotation direction;
- a first gear coupled to the bending operation member and rotationally driven by rotation operation of the bending operation member;
- a reduction gear mechanism coupled to the first gear and including a second gear to which rotation of the first gear is transmitted after the rotation is reduced;
- and
- a biasing mechanism that applies a biasing force in a rotation direction to the second gear, wherein
- the biasing mechanism includes a proximal end rotatably and pivotally supported at an immovable portion and a distal end rotatably and pivotally supported at an outer diameter portion of the second gear, and
- when the bending operation member is in a neutral state in which the bending portion is not bent and in substantially a linear state, two axes of the biasing mechanism and a rotational axis of the second gear are arranged so as to align on substantially a straight line.
Dependencies are inferred from the claim text.