| 摘要 |
The invention relates to a novel type of an external fixation device having a carrying structure (1; 40) of interconnected elements (2, 5, 6) comprising an extendible central body (2), and clamps (5, 6) for bone screws respectively articulated on opposed ends (3, 4) of the central body (2), said central body comprising two parts (8, 9) telescoping slidable one on the other, each of said parts (8, 9) including a first portion (8a; 9a) of elongate shape formed integrally with a second end portion (8b; 9b) of substantially cylindrical shape, said first portions (8a, 9a) of the parts (8, 9) being slidably coupled to each other by means of a driving groove (7) formed longitudinally in one the first portion (8a) and a corresponding slide (7a) formed longitudinally in the other first portion (9a) and means being provided in said parts (8, 9) for stopping their sliding movement characterized in that it further comprises at least one plate (27; 41; 42; 43; 60) having predetermined contour shape and thickness, at least one recess (28; 44; 47; 51) formed on the surface of at least one of the interconnected elements (2, 5, 6) and having its contour shape matching the contour shape of said at least one plate (27; 41; 42; 43; 60), and means (30, 31; 46, 46a; 49, 50 53, 54) for releasably securing said at least one plate (27; 41; 42; 43; 60) in said at least one recess (28; 44; 47; 51).
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