| 摘要 |
<p>A medical appliance (10) adapted to bridge and stabilize spaced apart bone segments (10A, 10B) having outside (12A, 12B), ledge (14A, 14B) and inside surfaces (16A, 16B). The appliance (10) has an elongate bottom plate (18), an elongate top plate (26), and a locking member (34). The bottom plate (18) is attachable to the ledge surfaces (14A, 14B) of the bone and has a bottom base plate (19), a plurality of screw barrels (20) extending from the bottom base plate (19) in a first direction for receiving barrel screws (20), and a plurality of openings (24) in the base plate (19) for rotatably retaining the screw barrels (20). The elongate top plate (26) has a top plate base (27), a plurality of slots (28) aligned to allow the barrel screws (32) to engage the screw barrels (20) of the bottom plate (18). The locking member (34) is disposed in a countersink (30) to engage the bone screws (32) such that axial and rotational movement of the bone screws (32) may be restricted. The screw barrels (20) are equipped with angle first end and riveted second end to restrain screw movement but allow the screws (32) to engage the barrels at various angles. A locking member (34) includes a locking ring (36) having a plurality of tapered rachet teeth (38) on an interior surface.</p> |
