Bone insert augment and offset device
OwnerKenneth B Trauner, Bradford J. Coaleinventors
Life of this patent
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Abstract
A bone insert includes a cap having a convex top surface, an elongated stem, and a barrier between the cap and the stem. The stem of the bone insert is inserted into a hole formed in a host bone until the barrier is pressed against the exposed bone. The bone implant can be placed against a small focus contact point on the cap. Liquid cement can be injected into a space volume between the host bone and a bone implant. The cap can be made of a material and/or have surface features that create a strong bond with the cement when the liquid cement cures. The stem can be made of a material and/or have bone ingrowth surface features that create a strong bond with the bone.
Claims20
A bone insert comprising:
- a cap having interdigitation surfaces;
- a polymer coating on a portion of the cap;
- flow paths that extend through an outer surface of the cap and the polymer coating;
- an elongated stem having bone ongrowth surface features on an outer surface of the elongated stem;
- and
- a solid barrier structure that physically separates the cap from the elongated stem, prevents liquids from flowing through the cap to the elongated stem and prevents the liquids from flowing through the solid barrier structure;
- wherein the cap is coupled to an upper surface of the solid barrier structure and the elongated stem is coupled to a lower surface of the solid barrier structure opposite the upper surface, and the solid barrier structure has a width that is wider than an outer width of the elongated stem.
A bone insert comprising:
- a cap having interdigitation surfaces;
- a non-metal cover on a portion of the cap;
- flow paths that extend from an upper outer surface of the cap and the non-metal cover;
- an elongated stem having bone ongrowth surface features;
- and
- a solid barrier structure that physically separates the cap from the elongated stem and prevents liquids from flowing through the solid barrier structure;
- wherein the cap is coupled to an upper surface of the solid barrier structure and the elongated stem is coupled to a lower surface of the solid barrier structure opposite the upper surface, and the solid barrier structure has a width that is wider than an outer width of the elongated stem.
Dependencies are inferred from the claim text.