| 摘要 |
A hand tool for inserting intramedulary pins in fractured bones of humans and animals. The tool includes an outer sleeve, a hollow shaft coaxially aligned within the sleeve having a continuous spiral groove in its outer surface, a cam follower on the outer sleeve slideably engaged with the spiral groove, a chuck mounted on one end of the shaft adapted to releasably grip an intramedulary pin, and a spring extended between the opposite end of the shaft and a flange integral with the hollow shaft. The tool is constructed to receive intramedulary pins of a variety of diameters and lengths. Additionally, it can be readily disassembled for its sterilization and for interchangeability of springs having different spring rates. As a person using the tool applies force to the sleeve to advance the pin longitudinally, the chuck is rotated and, with it, the pin which aids the insertion procedure.
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