| 摘要 |
The invention is a device, and a method of using the device, for securing an intrarmedullary (IM) orthopedic nail within a fractured long bone of a human or large animal. The nail is provided with a plurality of target apertures, a portion of which are located above and below the fracture point of the bone. The device further comprises a jig adapted to be securely affixed to the IM nail, the jig having proximal and distal target arms, each having a plurality of apertures adapted to align with the target apertures. When properly secured, the apertures of the jig align with the target apertures of the nail, and alignment devices are provided to accurately drill variable diameter holes through the bone cortex at the target apertures. A slot finder whose geometry at the tip enables the surgeon to be sure it is in the slot of the nail by entering through the cannula in the jig or by removing the jig to allow more freedom to place the end of the slot finder through the nail. The geometry at the end of the slot finder is unique. Screws secure the nail in place; the screw is provided with a larger diameter threaded portion and a smaller diameter threaded portion. A further aspect of the invention is an apparatus for forcibly removing the nail from the bone. |
