Bone insert augment and offset method
AssigneeTaq Ortho, LLC
InventorsKenneth B Trauner, Bradford J Coale
Life of this patent
Estimating the term…
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 method for coupling a bone insert to a bone comprising:
- providing the bone insert having a cap having interdigitation surfaces, an elongated stem having bone ongrowth surface features on an outer surface of the elongated stem that extends downward from a barrier structure, and the barrier structure coupled between a lower portion of the cap and an upper portion of the elongated stem;
- inserting the stem of the bone insert into the bone;
- placing the barrier structure against a surface of the bone;
- placing a bone implant against the cap;
- pouring liquid poly(methyl methacrylate) cement into at least one of a plurality of fenestrations in the cap;
- transmitting the liquid poly(methyl methacrylate) cement onto the interdigitation surfaces on the cap;
- blocking the liquid poly(methyl methacrylate) cement from flowing through the barrier structure to the elongated stem;
- and
- curing the liquid poly(methyl methacrylate) cement to bond the bone implant to the cap.
A method for coupling a bone insert to a bone comprising:
- providing the bone insert having a cap having interdigitation surfaces, a polymer coating on a portion of an upper and outer surface of the cap, an elongated stem having bone ongrowth surface features on an outer surface of the elongated stem that extends downward from a barrier structure, and the barrier structure coupled between a lower portion of the cap and an upper portion of the elongated stem;
- inserting the stem of the bone insert into the bone;
- placing the barrier structure against a surface of the bone;
- placing a bone implant against the cap;
- pouring liquid poly(methyl methacrylate) cement onto the interdigitation surfaces on the cap;
- transmitting the liquid poly(methyl methacrylate) cement through a plurality of fenestrations in the cap to an outer surface of the cap;
- blocking the liquid poly(methyl methacrylate) cement from flowing into the elongated stem of the bone insert by the barrier structure;
- and
- curing the liquid poly(methyl methacrylate) cement to bond the bone implant to the cap.
A method for coupling a bone insert to a bone comprising:
- providing the bone insert having a cap having a tool recess, the cap having interdigitation surfaces, a barrier structure coupled to a lower portion of the cap and an elongated stem having bone ongrowth surface features, the elongated stem extends downward from the barrier structure;
- providing an insert tool having a handle coupled to the proximal portion of the insert tool, a shaft coupled to the handle, and a driver on a distal end of the shaft;
- inserting the driver of the insert tool into the tool recess in the cap of the bone insert;
- inserting the stem of the bone insert into the bone using the insert tool;
- placing the barrier structure against the bone;
- removing the driver of the insert tool from the recess in the cap of the bone insert;
- placing a bone implant against the cap;
- pouring liquid poly(methyl methacrylate) cement onto the interdigitation surfaces on the cap;
- blocking the liquid poly(methyl methacrylate) cement from flowing through the barrier structure into the elongated stem of the bone insert;
- and
- curing the liquid poly(methyl methacrylate) cement to bond the bone implant to the cap.
Dependencies are inferred from the claim text.