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AssigneeHowmedica Osteonics Corp.
InventorsHaitong Zeng, Zongtao Zhang, Balaji Prabhu, Daniel E. Lawrynowicz
Estimating the term…
A medical implant component and a method for fabricating the same are provided. The medical implant component may comprise a substrate having a bearing portion, in which at least the bearing portion has a coating of at least 25 micrometers of a predetermined material. The predetermined material of the coating may include chromium ceramic having a chromium component which releases less than approximately 7 parts of hexavalent chromium per billion parts of water solution when the medical implant component is immersed in approximately 500 milliliters of water for approximately one week at a temperature in a range of room temperature to just below a boiling point of the water at atmospheric pressure. The residual stress of the coating may be less than approximately 100,000 pounds per square inch. The chromium ceramic may be a chromium oxide, a chromium carbide, a chromium nitride, or a chromium boride, or any combination thereof.
A medical implant component comprising a substrate having a bearing portion, in which at least said bearing portion has a coating of at least 25 micrometers of a predetermined material, said bearing portion with the coating being operable to articulate with a portion of another medical implant component or a portion of a patient, in which the predetermined material of the coating includes chromium ceramic having a chromium component which releases less than approximately 7 parts of hexavalent chromium per billion parts of water solution when the medical implant component by itself is immersed in approximately 500 milliliters of water for approximately one week at a temperature in a range of room temperature to just below a boiling point of the water at atmospheric pressure, and in which a value of a residual stress of the coating is less than approximately 100,000 pounds per square inch.
A medical implant component operable to articulate with a portion of another medical implant component or a portion of a patient, said medical implant component being formed of a predetermined material, in which the predetermined material includes chromium ceramic having a chromium component which releases less than approximately 7 parts of hexavalent chromium per billion parts of water solution when the medical implant component itself is immersed in approximately 500 milliliters of water for approximately one week at a temperature in a range of room temperature to just below a boiling point of the water at atmospheric pressure and in which a value of a residual stress of the predetermined material is less than approximately 100,000 pounds per square inch.
A method for fabricating a medical implant component, said method comprising:
A method for fabricating a medical implant component operable to articulate with a portion of another medical implant component or a portion of a patient, said method comprising:
Dependencies are inferred from the claim text.