| 摘要 |
PROBLEM TO BE SOLVED: To provide an external fixation device for a fracture fragment, which can fix swivel universal joints using shape constraint and releasably lock two or more swivel joints with only one fixation screw. SOLUTION: The device is fixed to connection elements and includes a jaw 35, an upper swivel element 4, a middle swivel element 5, and a lower swivel element 6. The swivel elements 4, 5, and 6 are positioned along an axis 38. At least two bone screws or pins 3 can be fixed between the jaw 35 and the surface 47 of a clamp positioned at the upper part of the upper swivel element 4. The upper swivel element 4 can be rotated about a pivot shaft 60 relative to the middle swivel element 5. The pivot shaft extending perpendicular to the axis is fixed on a first front face 61 of the middle swivel element 5 positioned to cross the axis 38. The lower swivel element 6 can be rotated about the axis 38 relative to the middle swivel element, and is fixed on a second front face 62 of the middle swivel element. COPYRIGHT: (C)2009,JPO&INPIT
|
