Abstract: The invention is directed in various aspects to a system including anchors, anchor components, and anchor assemblies and subassemblies that are adapted for attachment to a bony structure of a clinical subject. For example, two or more such anchors in the form of screws may be affixed to bones, for example, vertebral structures such as the pedicle, and each anchor is connected to a stabilizer such as a surgical rod that is inserted between the anchors. The anchors and assemblies are novel in many respects owing to their modular nature, which in contrast to conventional systems, allows the anchors to be provided to a surgeon in modular, subassembly and fully assembled form to enable a broad array of choices in devising the optimal plane for surgical bone fixation.

Abstract: The invention is directed in various aspects to a system including anchors, anchor components, and anchor assemblies and subassemblies that are adapted for attachment to a bony structure of a clinical subject. For example, two or more such anchors in the form of screws may be affixed to bones, for example, vertebral structures such as the pedicle, and each anchor is connected to a stabilizer such as a surgical rod that is inserted between the anchors. The anchors and assemblies are novel in many respects owing to their modular nature, which in contrast to conventional systems, allows the anchors to be provided to a surgeon in modular, subassembly and fully assembled form to enable a broad array of choices in devising the optimal plane for surgical bone fixation.

Abstract: An osteo-integrated implant utilizes a metal seal formed on the outer diameter of the implant components spaced axially from the annular seat or junction of the components. The sealing surface of one component is machined on the internal diameter of a counter-bored cylindrical member extending over the junction to engage the outer diameter of the other component. The mating surface is formed on the outer diameter and is machined such that an interference fit exists between the two surfaces when the abutment is fully seated in the implant. The design allows for both radial and axial micro motion without compromise to the sealing effectiveness.

Abstract: An implant abutment system uses a combination of an implant anchor, an abutment having a plurality of connection features for connecting to the implant, and a locking pin for locking the abutment into the implant. The implant anchor includes an axial bore on a superior end having inner surface features matching outer surface features of the inferior end of the abutment. The cooperative operation of these features prevents abutment rotation once the abutment is positioned within the implant and also provides indexability for angled abutments. Such anti-rotation features are accomplished with matching splines and flutes machined on the cooperative surfaces between the abutment exterior and the implant bore inner surface. The invention also provides a retention feature for locking the abutment into the implant consisting of a resilient segmented end having a retention surface positioned to match a cooperatively formed surface in the implant bore.