DYNAMIC BONE FIXATION ELEMENT AND METHOD OF USING THE SAME

摘要

The present invention relates to dynamic bone fixation elements and a surgical method to stabilize bone or bone fragments. The dynamic bone fixation elements preferably include a bone engaging component and a load carrier engaging component. The bone engaging component preferably includes a plurality of threads for engaging a patient's bone and a lumen. The load carrier engaging component preferably includes a head portion for engaging a load carrier (e.g., bone plate) and a shaft portion. The shaft portion preferably at least partially extends into the lumen. Preferably at least a portion of an outer surface of the shaft portion is spaced away from at least a portion of an inner surface of the lumen via a gap so that the head portion can move with respect to the bone engaging component. The distal end of the shaft portion is preferably coupled to the lumen.

主权项

1. A dynamic bone fixation element configured to couple a load carrier to bone, the dynamic bone fixation element comprising:
a bone engaging component including a proximal end, a distal end spaced apart from the proximal end along a first direction, an inner surface that defines a lumen extending from the proximal end and toward the distal end, and a plurality of threads that are configured to engage bone; and a load carrier engaging component including a head portion structured to engage a load carrier and a shaft portion extending from the head portion along the first direction and into the lumen, the shaft portion having an outer surface that faces the inner surface such that at least a portion of the outer surface of the shaft portion is spaced away from at least a portion of the inner surface of the bone engaging component along a direction that is perpendicular to the first direction such that at least the head portion is movable with respect to the bone engaging component along a direction having a directional component that is transverse to the first direction, wherein rotation of the load carrier engaging component about an axis that extends substantially along the first direction causes the bone engaging component to simultaneously rotate about the axis.