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US 2023/0405183 A1Published application
Orthopedic implants with increased hardness and increased depth of hardness and method of making
AssigneeWaldemar Link GmbH & Co. KG
InventorsHelmut D. LINK, Richard CSASZAR
Life of this patent
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Abstract
A prosthesis or implant device for use in joint or bone repair, or restoration of function, with improved surface hardness and depth of hardness and a process comprising treating a biocompatible alloy such that hardness and depth of hardness is improved.
Claims20
A process for making an orthopedic implant from cobalt chromium molybdenum alloy, comprising:
- exposing a surface of the implant to pulse plasma nitriding for 10 to 20 hours at approximately 600 degrees Celsius;
- and
- subsequently coating the implant with a hard material layer using Arc-PVD to form a coated implant.
A process for making an orthopedic implant from alpha-beta titanium alloy, comprising:
- exposing a surface of the implant to pulse plasma nitriding for 10 to 48 hours at approximately 730 to 750 degrees Celsius;
- and
- subsequently coating the implant with a hard material layer using Arc-PVD to form a coated implant.
Dependencies are inferred from the claim text.