| 摘要 |
<p>A fracture fixation system is provided for the insertion of a fixation pin into the medullary canal of a fractured metacarpal, metatarsal, or phalangeal bone for stable bone fixation. The system includes one or more pins, and an instrument for implanting the pins. According to one embodiment of the invention, the instrument includes a main handle (16), and a pin handle (80) moveable relative to the main handle (16). The main handle (16) includes a distal end, a drill (40) coupled to the distal end, and a longitudinal slot (82) which receives the pin handle. The drill (40) includes a shaft having a distal boring tip (60), and a groove (70) proximal the boring tip (60) for guiding the fixation pin (96). The pin handle (80) is shaped, and sized to slidably move within the longitudinal slot (82). Each pin (86) preferably includes a curved, distal end. The distal end (96) rests within the groove (70) of the drill shaft (42). Movement of the pin handle (80) within the slot (82) of the main handle (16) distally relative to the main handle (16) causes the distal end (96) of the pin to move relative to the drill shaft (42).</p> |
