Bone screw with channels

Details Bone screw with channels Bone screw with channels

A - Human Necessities

61

B

A61B 17/86 (2006.01)

Patent

CA 2752685

Embodiments of the invention may prevent or diminish a bone screw from "backing out" from bone. Bone particulate residing in channels of the bone screw may promote bone growth that would reduce the potential of backing out. Furthermore, bone particulate from drilling and tapping functions can cause increased friction. However, by placing bone particulate in channels of the bone screw, potential binding may be reduced resulting in less stress on the screw shaft. Also, breaking of screws during screw insertion may be reduced due to tapering of the screw.

Des modes de réalisation de l'invention sont susceptibles de prévenir ou de diminuer les phénomènes de ressortie hors de l'os de la vis à os. Des particules d'os maintenues dans les canaux de la vis à os sont susceptible de favoriser une croissance osseuse qui pourrait réduire l'éventuel phénomène de ressortie. En outre, les particules d'os provenant du perçage et du rebouchage peuvent provoquer un accroissement de friction. Toutefois, en plaçant des particules d'os dans les canaux de la vis à os, on diminue les risques de liaison, ce qui aboutit à une diminution des contraintes sur la tige de la vis. Enfin, la réduction progressive du diamètre de la vis réduit les risques de bris de la vis pendant l'insertion.

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