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The medical application screw which uses the removal leaving operation jig and the said removal leaving operation jig
The medical application screw which uses the removal leaving operation jig and the said removal leaving operation jig
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机译：使用去除留着操作夹具和所述去除留着操作夹具的医疗用螺钉
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摘要
PROBLEM TO BE SOLVED: To provide a removal operation jig that can easily remove a medical screw from a screwed bone fracture part.SOLUTION: An outer cylindrical part 30 is inserted into an inner cylindrical part 20 from the outside, and used while an internal thread part 31 is screwed into an external thread part 24. The outer cylindrical part 30 is rotated in a clockwise direction, and thereby the external thread part 24 is screwed to the internal thread part 31. When the outer cylindrical part 30 is screwed, the lower end of the outer cylindrical part 30 descends downward while abutting the outside of locking arms 22, and the locking arms 22 warped outward are gradually narrowed inside from the outer cylindrical part 30. When the removal operation jig 10 is pressed down from the upper part toward the head of the screw, locking claws 23 are made to slide according to the shape of the head of a hemisphere shape, and are guided in a groove part via a guide part while the locking arms 22 having elasticity are bent outside. When the locking claws 23 are pushed down till the last, the locking claws 23 enter the locked parts being flat in the perpendicular direction from the groove part of the back side of the head, and are locked thereto.
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