| 摘要 |
A hook forceps apparatus for industrial endoscopes in which a hook stopper is connected to the tip of an elongated flexible shaft part and is provided with a fitting part, a male screw part having a self-tapping function is formed on the outer periphery of this fitting part and, on the other hand, a recess in which the above mentioned fitting part is fitted and a female screw is cut by the male screw part is provided on the base side of a hook part to be connected to this hook stopper and which is used as inserted through a channel in the industrial endoscope.
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