Apparatus for preventing screw backout in a bone plate fixation system
作者： Bradley T. Estes
DOI:
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摘要: A system (10) for internal fixation of bone includes a plate (12) having number bores (18) therethrough, corresponding screws (14) each an enlarged head portion (20) and elongated shaft (22) defining engaging threads (25) non-threaded (42) between the threaded portions (20, 25), screw anti-back out members (16) bore (45) therethrough. The are positioned within initially sized to slidingly receive (22). advanced through so that is secured with surrounding shafts thereafter heated sufficiently shrink (45), thereby trapping (15).
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