| 摘要 |
A locator device for consistently providing relative positioning of a drilling positioning block with the distal end of a surgical nail, for accurate alignment of the locking screws with the nail distal holes. The locator device 1 comprises a projection block 3 lockable upon a positioning arm 4. The block 3 has an arch 7 which extends towards the nail 8, the arch carries a guide sleeve 9 and a rod 10 guided therein, the rod having a contact end 11 to engage the surgical nail, and marking means to indicate the rod position within the guide 9. The block 3 has apertures 5 and may be movable in a frame 12 by adjustment means having a screw thread attachment. The marking means may be scale increments on the rod, ink or a clamp associated with the rod. A positioning arrangement which may be used with the locator device is also provided comprising a handle 18 and mounting 17, a positioning arm 4, and universal joints 15, 16. Methods of locating and positioning the devices are also disclosed. |
