INTERNAL FIXATION DEVICE FOR BONE FRACTURES

摘要

An internal fixation device is adapted for fixing a first bone fracture to a second bone fracture. The internal fixation device includes: a shank adapted to extend into the first and second bone fractures and including a connecting segment that is made of a shape-memory alloy, and a first threaded segment that is connected to a first end of the connecting segment and that is adapted to be fixed in the first bone fracture; and a fixing unit adapted to fasten the second bone fracture to the first bone fracture. When environmental temperature is increased to a predetermined temperature, the connecting segment is shortened such that the fracture surfaces of the first and second bone fractures are 15 pressed closely against each other.

主权项

1. An internal fixation device adapted for fixing a first bone fracture to a second bone fracture, the first bone fracture having a fracture surface, the second bone fracture having a fracture surface complementary to the fracture surface of the first bone fracture, said internal fixation device comprising:
a shank adapted to extend into the first and second bone fractures and including a connecting segment that is made of a shape-memory alloy and that has a first end, and a first threaded segment that is connected to said first end of said connecting segment and that is adapted to be fixed in the first bone fracture; and a fixing unit adapted to fasten the second bone fracture to the first bone fracture; wherein, when environmental temperature is increased to a predetermined temperature, said connecting segment is shortened such that the fracture surfaces of the first and second bone fractures are pressed closely against each other.