| 摘要 |
PURPOSE:To stably and accurately perform the positioning of a bone and to accurately and safely grasp the growing state of the bone by providing a pin head, which is mounted to a shaking plate so as to be shakable around the axis in a Y-axis direction and holds an insert pin in a freely detachable manner and a position control mechanism for moving a holding frame on a main body frame. CONSTITUTION:Shaking plates 5, 6 protrude from the side surface of a main body frame 2 in a Y-axis direction and pin heads 7, 8 are mounted to the leading ends thereof and hold two or more insert pins P, P,...P inserted in bones 100, 100 in a freely detachable manner. The main body frame 2 extends in an X-axis direction and a holding frame 3a is adjusted to the position on an X-axis to be fixed at that position and the positional adjustment thereof is performed by a position control mechanism 15 and the end part of an adjustment screw 16 is threaded with the lower part of the guide plate 4 of the holding frame 3a. The adjustment screw 16 has a head 16a and the holding frame 3a is slid along a slide rod 2a by rotating the head 16a. The end part of the extensible rod of a position measuring apparatus 40 is in contact with the guide plate 4 of the holding frame 3a and the position of the holding frame 3a can be always accurately grasped by the position measuring apparatus 40 and the positions of both bones 100, 100 can be grasped accurately. |
