| 摘要 |
PROBLEM TO BE SOLVED: To provide an angle manipulator of an endoscope which is inexpensive, lightweight, and easily adjusted in assembling by eliminating looseness in rotating a drive knob, while keeping a conventional manipulative procedure. SOLUTION: An angle manipulation wire is wound around the pulley of each operation part body and the wire wound around the pulley is pushed/pulled by the actuation of a rotary manipulation member, so that the angle part of an insertion part is bent. The rotary manipulation member includes: the drive knob; a driving part including a drive axis; the movement ring and the friction ring (1) of a friction mechanism for fixing the rotary position of the drive knob; friction members; and an arm. The arm includes a mechanism to be located in two positions, i.e., a friction actuation state and a friction release position. A friction ring (2) is fixed inside the vertically movable movement ring. The friction ring (1) and the friction members are freely turnably arranged and also an approachable/separable friction function is actuated. The arm has an abutment surface for releasing the friction of the friction members, so as to release the friction function. An external ring with a lever is arranged, so as to vertically move the movement ring by the actuation with an inclination cam formed in the movement ring. Then, the angle manipulator of the endoscope is obtained, which is changed-over between the friction actuation state position and the friction release state position. COPYRIGHT: (C)2011,JPO&INPIT
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