| 摘要 |
A surgical instrument comprising an elongated tubular hollow shaft, first and second opposable jaws pivotable at the distal end of the shaft, and first and second opposable dissecting tips pivotable at the ends of the jaws. The jaws are generally pivotable in first and second parallel planes and the tips are pivotable in third and fourth planes which are generally perpendicular to the first and second planes, respectively. A first handle is fixedly attached to the proximal end of the hollow shaft, and a second handle is pivotably connected to the first handle. The jaws are opened and closed by a rod which extends through the hollow shaft and has one end connected to the first and second jaws and its other end connected to the second handle. The angle of the tips is adjusted by a trigger plate pivotably attached to the first handle, and first and second wires attached at one end to the trigger plate and at the other end to the first and second tips, respectively. The first and second wires extend through a hollow guide tube having a longitudinal axis parallel to the shaft longitudinal axis and affixed to the shaft.
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