Resilient bone plate and screw system allowing bi-directional assembly
AssigneeDePuy Spine, Inc.
InventorsDavid D. Konieczynski, Thomas V. Doherty, Alexander D. Grinberg, Eric D. Kolb
Life of this patent
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Abstract
Bone screws and bone plates are provided that offer the surgeon the ability to either assemble the screws to the plate, or the plate to the screws, depending on the surgeon's preference and the patient's circumstances. The bone screws and bone plates of the present invention include a combination of geometric configurations that allow the screws and plates to fit together from different assembly directions. Additionally, the bone screws and bone plates can include material resilience features to allow expansion/contraction during assembly to allow bidirectional attachment to one another.
Claims21
A bone plate and screw system for the stabilization of bone segments, comprising:
- a bone plate having a first surface, a second bone-contacting surface opposed to the first surface, and an aperture extending through the first and second surfaces, the aperture having a predefined shape and size, and being configured to receive a bone screw, the aperture further including a seating groove therein;
- a screw configured to be inserted into bone, the screw having a head region at a proximal end, the head region being defined by an upper surface, a lower surface, and a sidewall extending therebetween and connecting the upper surface and lower surface, and an elongated body extending from the head region to a distal end of the screw, the elongated body including a threaded portion;
- and
- a resilient locking member for securing the bone plate to the screw, the resilient locking member having a top surface, a bottom surface, and an outer wall extending therebetween and connecting the top surface to the bottom surface, the resilient locking member being configured to be captured within the seating groove of the aperture, and the resilient locking member further including a channel extending about the inner circumference, the channel being sized and shaped to capture the head region of the screw;
- wherein the bone plate and screw system can be implanted using both a plate first and anchors first construction.
Dependencies are inferred from the claim text.