Polymeric pedicle rods and methods of manufacturing
View Patent ↗A spinal pedicle rod comprising an internally reinforced polymeric core that is at least partially encased within at least one polymeric coating. A dynamic stabilization device for bones in which flexible rods are combined with a pair of dynamic anchoring devices comprising i) a shank for anchoring into a bone or a vertebra, ii) a head connected to the shank, iii) a receiving part for the head and iv) a mobile element acting on the head.
1. A spinal pedicle rod comprising an internally reinforced polymeric core that is at least partially encased within a polymeric coating, wherein the core comprises a weave of fibers,
the rod further having a pair of end portions, and an intermediate section therebetween, wherein the core of the intermediate section has a base section and a rib extending from the base section,
wherein the core is at least partially encased within a polymeric coating having an outer surface, and the rib extends through the outer surface of the coating.
2. The rod of claim 1 wherein the core has a non-circular axial cross-section.
3. The rod of claim 2 wherein the core has a semi-oval axial cross-section.
4. The rod of claim 2 wherein the core has an axial cross-section having a height and a width, wherein the height is greater than the width.
5. The rod of claim 1 wherein the core is substantially fully encased within the polymeric coating.
6. The rod of claim 1 , wherein the core comprises continuous fiber reinforcements.
7. The rod of claim 6 having a longitudinal axis, wherein the continuous fiber reinforcements align themselves within the core along the longitudinal axis of the rod.
8. The rod of claim 1 wherein the rib extends through a concave surface of the coating.