Bone anchor
AssigneeZimmer Biomet Spine, Inc.
InventorAllison Christine Capote
Life of this patent
Estimating the term…
Abstract
An anchor assembly can be couplable to a bone and can include an anchor and a housing. The anchor can include a shank securable to bone and a head coupled to a proximal portion of the shank. The housing can include a proximal portion including an anchor bore and a distal portion including a secondary bore configured to engage the anchor to limit angulation of the anchor relative to the housing.
Claims20
An anchor assembly couplable to bone, the assembly comprising:
- an anchor comprising:
- a shank securable to bone;
- and
- a head coupled to a proximal portion of the shank;
- and
- a housing comprising:
- a proximal portion including an anchor bore extending distally into the housing along a longitudinal axis of the housing, the anchor bore configured to retain the head of the anchor therein;
- and
- a distal portion including a secondary bore configured to engage the anchor to limit angulation of the anchor relative to the housing, the secondary bore comprising:
- a first portion configured to limit the angulation of the anchor to a first angle relative to the longitudinal axis;
- and
- a plurality of second portions each configured to limit the angulation of the anchor to a second angle relative to the longitudinal axis that is greater than the first angle.
An anchor housing configured to receive an anchor therethrough, the anchor couplable to a bone, the anchor housing comprising:
- a proximal portion including an anchor bore extending distally into the housing along a longitudinal axis of the housing, the anchor bore configured to receive a shank of an anchor therethrough and configured to retain a head of the anchor therein;
- and
- a distal portion including a secondary opening configured to engage the anchor to limit angulation of the anchor relative to the housing, the secondary bore comprising:
- a substantially planar face configured to limit the angulation of the anchor to a first angle relative to the longitudinal axis;
- and
- an angled notch configured to limit the angulation of the anchor to a second angle relative to the longitudinal axis that is greater than the first angle.
An anchor housing couplable to a bone, the housing comprising:
- a proximal portion including an anchor bore extending distally into the housing along a longitudinal axis of the housing, the anchor bore configured to receive the shank therethrough and configured to retain the head of the anchor therein, and
- a distal portion including a secondary bore configured to engage the anchor to limit angulation of the anchor relative to the housing, the secondary bore comprising:
- a first portion configured to limit the angulation of the anchor to a first angle relative to the longitudinal axis;
- and
- a second portion configured to limit the angulation of the anchor to a second angle relative to the longitudinal axis that is greater than the first angle.
Dependencies are inferred from the claim text.