作者: Robert A. Farris , David L. Brumfield
DOI:
关键词: Thread (computing) 、 Geology 、 Structural engineering 、 Wrench 、 Hexagonal crystal system 、 Fixation (surgical) 、 Nut
摘要: A tool assembly has a shaft (11) with sleeve (21) slidable along it and hexagonal drive post (14) at its lower end to be received in hex socket the upper (34) of bone bolt secured patient's spine. nut (33) secure connector (37) on bolt, is temporarily stored short thread (16) near end. The slid down (23), nut. manually turned while handle prevents shaft, thereby from turning. As turns, off onto (34).