Locking spiral anchoring means

Details Locking spiral anchoring means Locking spiral anchoring means

A - Human Necessities

61

B

A61B 17/86 (2006.01) A61B 17/80 (2006.01) F16B 25/00 (2006.01)

Patent

CA 2756748

A bone screw (600) comprising a proximal head (618) with a central axis (619) and an external thread (626) having a pitch p for lockingly engaging a bone plate hole (652) and a first shaft (602) extending distally from said head (618) and having the shape of a helix with a pitch P and a helix axis (603). Said head (618) and said first shaft (602) are rotatably coupled to each other, so that said shaft (602) can rotate about its axis (603) with respect to said proximal head (618).

L'invention porte sur une vis osseuse (600) comprenant une tête proximale (618) avec un axe médian (619) et un filetage extérieur (626) ayant un pas p de façon à engager de façon verrouillable un trou de plaque osseuse (652) et un premier arbre (602) s'étendant de façon distale à partir de ladite tête (618) et ayant la forme d'une hélice avec un pas p et un axe d'hélice (603). Ladite tête (618) et ledit premier arbre (602) sont couplés de façon rotative l'un à l'autre, de telle sorte que ledit arbre (602) peut tourner autour de son axe (603) par rapport à ladite tête proximale (618).

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