| 摘要 |
A targeting device (20) for targeting a cross bore (16, 18) in a bone nai l (10) has an arm member (28) coupled to an end portion (24) of the bone nai l (10) and an aiming portion (32) forming part of the arm member extending p arallel to a longitudinal axis of the bone nail. An adjustable aiming device (36) is mounted on the aiming portion (32), the adjustable device (36) havi ng a guide bore (88, 90) alignable with the cross bore (16, 18) in the nail. The adjustable device (36) is moveable with respect to the aiming portion i n a direction perpendicular to a plane containing both the nail longitudinal axis and central axis of the cross bore. A target indicator (150, 200) is m ounted on the adjustable aiming device (36). The target indicator has a radi olucent body including a planar portion having spaced parallel radiopaque el ements (160, 162, 210, 212, 214) therein.
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