| 摘要 |
<p>The external fracture setter consists of a centre telescopic part with each end fitted with a clamp for a group of locating pins. Each of the two telescopic parts is connected to a compression and extension member. The two centre part components (10, 11) are connected to the clamps (17) by ball joints (16, 18). The clamp settings and the positions of the components (10, 11) are locked in place by arresters. The compression and extension members (14) are releasably connected to the components. The ball joints have a threaded ring (22) so that the clamp jaw (21) is fixed to the ball and works with an adjustable jaw (27) to hold the pins. Compression and extension are provided by hollow cylinders (37, 38) with carried upright bolts (13, 13') set to the ends of the telescope (10, 11). Each bone pin has a cylindrical shank and tapered core (29) with spiral constant pitch outer thread so that the shank locates in the clamp sockets (26).</p> |
