Bone fixing device.

摘要

A bone fixing device (101, 102) is disclosed in which a single rod member (6, 116) is arranged in a longitudinal direction of a bone (4, 114), and at least two block members (8, 118a, 118b) are mounted on the rod member (6, 116) so that the block members may be fixed to any desired positions in the axial direction and around the axis of the rod member (6, 116). Pin holding mechanisms for holding a plurality of pins (5, 115) to be inserted into the bone (4, 114) are mounted on the block members (8, 118a, 118b), respectively. By the pin holding mechanisms, the pins (5, 115) are positionally adjustable around axes in the first and second directions (Y) and (Z) which are preferably perpendicular to the axial direction (X). Also, an actuator (138, 160) is fixed to the rod member (116). One of the block members (118a) slidable relative to the rod member (116) is moved in the axial direction relative to the rod member (116) to thereby impart elongation/contraction force to the bone (114). A detector (152) is fixed to the other block member (118b) and is brought into contact with a contact (150) located at an end of the rod member (116) to thereby detect the repulsive force from the bone (114).