Materials and methods for prevention of cold welding, corrosion and tissue overgrowth between medical implant components

A medical implant for prevention of cold welding, corrosion and tissue overgrowth on medical implant components, comprising:

• at least one elongated implant plate having a first implant contact surface;
• a plurality of fastener openings extending through the at least one elongated implant plate in spaced-apart relationship to each other, the first implant contact surface is in the plurality of fastener openings, respectively;
• a plurality of fasteners configured to extend through the plurality of fastener openings, respectively, each of the plurality of fasteners having a second implant contact surface positionally interfacing with the first implant contact surface of the at least one elongated implant plate, the first implant contact surface and the second implant contact surface encompassing all points of contact between the at least one elongated implant plate and the plurality of fasteners;
• a nonmetallic biocompatible separation coating material on the first implant contact surface and the second implant contact surface;
• wherein the separation coating material includes a wax and imparts a coating layer at an interface between the first implant contact surface of the at least one implant plate and the second implant contact surface of each the plurality of fasteners and the separation coating material separates the at least one elongated implant plate from the plurality of fasteners at all points of contact between the at least one implant plate and the plurality of fasteners, the nonmetallic biocompatible separation coating material comprises ethylene combined with a copolymer wax, the copolymer wax including from about 5 percent to about 99 percent by weight of a co-monomer having molecular weight in the range of from about 500 to about 500,000 Dalton, the separation coating material covering substantially an entire area of the at least one of the first implant contact surface and the second implant contact surface;
• wherein the separation coating material is applicable to the first implant contact surface of the at least one implant plate and the second implant contact surface of the at least one fastener using a smearing technique;
• and
• wherein the separation coating material is formulated to prevent cold welding, corrosion, and tissue overgrowth between the at least one implant plate and the plurality of fasteners.

A medical implant for prevention of cold welding, corrosion and tissue overgrowth on medical implant components, comprising:

• at least one elongated implant plate having a first implant contact surface;
• a plurality of fastener openings extending through the at least one elongated implant plate in spaced-apart relationship to each other, the first implant contact surface is in the plurality of fastener openings, respectively;
• a plurality of fasteners configured to extend through the plurality of fastener openings, respectively, each of the plurality of fasteners having a second implant contact surface positionally interfacing with the first implant contact surface of the at least one elongated implant plate, the first implant contact surface and the second implant contact surface encompassing all points of contact between the at least one elongated implant plate and the plurality of fasteners;
• a nonmetallic biocompatible separation coating material on at least one of the first implant contact surface and the second implant contact surface;
• wherein the separation coating material includes a wax and imparts a coating layer at an interface between the first implant contact surface of the at least one elongated implant plate and the second implant contact surface of each of the plurality of fasteners and the separation coating material separates the at least one elongated implant plate from each of the plurality of fasteners at all points of contact between the at least one elongated implant plate and each of the plurality of fasteners, the nonmetallic biocompatible separation coating material including ethylene combined with a copolymer wax, the copolymer wax including from about 5 percent to about 99 percent by weight of a co-monomer having molecular weight in the range of from about 500 to about 500,000 Dalton, the separation coating material covering substantially an entire area of the first implant contact surface and the second implant contact surface;
• wherein the separation coating material is applicable to the first implant contact surface of the at least one elongated implant plate and the second implant contact surface of the plurality of fasteners, respectively, using a smearing technique;
• and
• wherein the separation coating material is formulated to prevent cold welding, corrosion, and tissue overgrowth between the at least one elongated implant plate and the plurality of fasteners, respectively.