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US 11,992,245 B2Granted
Adjustable implant assembly
AssigneeDePuy Synthes Products, Inc.
InventorsThomas Gamache, Michael Varieur, Kenneth Connell
Life of this patent
Estimating the term…
Abstract
An implant assembly includes a screw body, including anchor portion and proximal head portion, and a cradle movably mounted in the screw body to allow for controlled angulation between a spinal connection element disposed in the cradle and the screw body. The cradle is pivotable in one or more selected directions about one or more axes relative to the screw body. The cradle may be generally, substantially spherical in shape and allow for unrestricted movement in one or more directions around one or more axis.
Claims16
An implant assembly comprising:
- a proximal head portion;
- a substantially-spherical cradle having a central bore configured to receive a spinal fixation element and opposed flat portions on an external portion thereof, the cradle seated within the proximal head portion so that the opposed flat portions bind the cradle against the proximal head portion;
- a locking mechanism receivable in the proximal head portion;
- and
- an anchor portion extending distally from the proximal head portion, the anchor portion configured to engage with bone;
- wherein actuation of the locking mechanism is effective to fix an orientation of the cradle relative to the proximal head portion.
3 more elements
An implant assembly, comprising:
- a proximal head portion defining a cavity;
- a substantially-spherical cradle disposed within the cavity, the substantially-spherical cradle having opposed flat portions on an external portion thereof and defining a central bore, the cradle being configured to rotate within the cavity about the opposed flat portions;
- a locking mechanism receivable within a proximal end of the proximal head portion;
- and
- an anchor portion extending distally from the proximal head portion, the anchor portion being configured to be driven into bone;
- wherein the central bore of the cradle is sized to receive and retain a spinal rod;
- and
- wherein the locking mechanism is configured to fix the cradle at a first orientation relative to the proximal head portion such that a spinal rod received within the central bore is fixed relative to the proximal head portion.
5 more elements
Dependencies are inferred from the claim text.