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US 12,569,278 B2Granted
Bone attachment assembly
AssigneeGlobus Medical, Inc.
InventorGlenn R. Buttermann
Life of this patent
Estimating the term…
Abstract
A bone attachment assembly may include an attachment head, a set screw configured to attach to the attachment head, and a rod surface with a first raised portion and a second raised portion that define a lowered portion positioned between the first raised portion and the second raised portion. The first raised portion, the second raised portion, and the set screw may be configured to directly contact a rod in order to retain the rod within the attachment head.
Claims20
A bone attachment assembly comprising:
- a side-loading attachment head having a central longitudinal axis, a first sidewall and an opening opposite the first sidewall defining a recess;
- a bone screw shaft attached to the attachment head and extending downwardly along the central longitudinal axis for insertion into a bone;
- a set screw having a pointed end and adapted to be threaded into a top of the side-loading attachment head, the set screw having a longitudinal screw axis aligned with the central longitudinal axis and running through the pointed end of the set screw;
- a rotatable rod carrier rotatably disposed in the recess of the side-loading attachment head and adapted to receive a rod along a longitudinal rod axis, wherein the rod carrier and the set screw are configured to rotatably retain the rod within the side-loading attachment head and the pointed end of the set screw is configured to fix the rod to the side-loading attachment head at a selected angle relative to a longitudinal axis of the bone screw shaft, wherein when the rod is retained in the rod carrier, the central longitudinal axis is configured to intersect with the longitudinal rod axis.
1 more element
A bone attachment assembly comprising:
- a side-loading attachment head having a longitudinal axis, a first sidewall and an opening opposite the first sidewall defining a recess;
- a bone screw shaft attached to the side-loading attachment head and extending downwardly along the longitudinal axis for insertion into a bone;
- a set screw having a pointed end and adapted to be threaded into the side-loading attachment head, the set screw having a longitudinal screw axis aligned with the longitudinal axis and running through the pointed end of the set screw;
- a rod carrier disposed in the recess of the side-loading attachment head and pivotally coupled to the side-loading attachment head along a pivot axis lateral to the longitudinal axis, the rod carrier adapted to receive a rod along a longitudinal rod axis, wherein the rod carrier and the set screw are configured to rotatably retain the rod within the side-loading attachment head and the pointed end of the set screw is configured to fix the rod to the side-loading attachment head at a selected angle relative to the longitudinal axis of the bone screw shaft, wherein when the rod is retained in the rod carrier, the longitudinal axis is configured to intersect with the longitudinal rod axis.
1 more element
Dependencies are inferred from the claim text.