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Ceramic coated orthopaedic implants and method of making such implants

A technology for orthopedics and implants, applied in the field of scratch-resistant and corrosion-resistant coatings, and wear-resistant, which can solve the problems of reduced economic feasibility, poor adhesion between coatings and underlying substrates, and inability to provide peak hardness

Inactive Publication Date: 2012-07-04
DEPUY PROD INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, certain limitations such as inability to provide optimal levels of peak hardness, poor adhesion of the coating to the underlying substrate, and economic viability reduce the practicability of some of these traditional methods

Method used

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  • Ceramic coated orthopaedic implants and method of making such implants
  • Ceramic coated orthopaedic implants and method of making such implants
  • Ceramic coated orthopaedic implants and method of making such implants

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Embodiment Construction

[0046] The present invention may be understood more readily when considered in conjunction with the following detailed description of the accompanying drawings and examples which form a part of this disclosure. It is to be understood that the present invention is not to be limited to the specific products, methods, conditions or parameters described and / or illustrated herein, and that the terminology used herein is for the purpose of describing specific embodiments by way of example only and is not intended to be limited by the specific products, methods, conditions or parameters described and / or illustrated herein. The invention protected by the book.

[0047] In the present disclosure, unless the context clearly indicates otherwise, the singular "a" and "the" include plural meanings, and references to specific numerical values ​​include at least the specific numerical values. Thus, for example, reference to "a material" means one or more of such materials, as well as equival...

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Abstract

Orthopaedic implants with scratch-, wear- and corrosion-resistant ceramic coatings on metal substrates are provided, as well as methods for making such coatings. The metal substrate is advantageously HIP'd and homogenized prior to coating with the ceramic, and the HIP'd and homogenized metal substrate is preferably ground and polished prior to coating with the ceramic. The ceramic coating may include a band with multiple thin alternating layers of titanium nitride, titanium carbonitride or both titanium nitride and titanium carbonitride, and may include an alumina overcoat. The present coatings curtail the growth of microcracks that can otherwise result from surface cracks or scratches on coated substrates, and thereby provide improved wear characteristics, scratch resistance, and prevent the penetration of corrosive fluids to the substrate material.

Description

[0001] Cross references to related patent applications [0002] This patent application is a continuation-in-part of: U.S. Patent Application No. 12 / 782,315, filed May 18, 2010, entitled "Multilayer Coatings"; and Jason B. Langhorn, 2009 U.S. Patent Application No. 12 / 605756 (U.S. Patent Publication No. 2010 / 012926A1), entitled "Multilayer Coatings," filed October 26, 2008, which claims filing on November 24, 2008 Priority of U.S. Provisional Application No. 61 / 117468. technical field [0003] The present invention relates to, but is not limited to, wear, scratch and corrosion resistant coatings for metal substrates, such as those used to prepare medical implants. Background technique [0004] Metal orthopedic implants are susceptible to degradation after installation by scratching, abrasion, or other destructive or corrosive processes that occur in situ. Damaged implants may exhibit reduced performance and in some cases must be repaired or replaced, requiring complex and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C16/02C23C16/34C23C16/36C23C16/44A61L27/30A61L27/06
CPCC23C16/0272A61L2420/08C23C16/403A61L27/04A61L27/30A61L2420/02
Inventor J·B·朗霍恩R·W·欧弗霍尔泽B·J·史密斯
Owner DEPUY PROD INC