Laser based metal deposition of implant structures
First Claim
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1. A method for constructing a medical implant device, comprising:
- forming a porous metal base;
depositing a corrosion barrier layer on said porous metal base, said deposition including laser based metal deposition (LBMD); and
depositing a layer comprising a bearing material onto said corrosion barrier layer using LBMD.
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Abstract
A method of depositing a hard wear resistant surface onto a porous or non-porous base material of a medical implant. The medical implant device formed by a Laser Based Metal Deposition (LBMD) method. The porous material of the base promotes bone ingrowth allowing the implant to fuse strongly with the bone of a host patient. The hard wear resistant surface provides device longevity when applied to bearing surfaces such as artificial joint bearing surface or a dental implant bearing surface.
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Citations
54 Claims
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1. A method for constructing a medical implant device, comprising:
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forming a porous metal base; depositing a corrosion barrier layer on said porous metal base, said deposition including laser based metal deposition (LBMD); and depositing a layer comprising a bearing material onto said corrosion barrier layer using LBMD. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 12, 13, 14, 15, 16, 17)
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9. A method as in clam 8, wherein said alloy comprised of cobalt (Co) and chromium (Cr) is formed as a foil, wherein despositing said bearing material layer comprises heating said foil with a laser.
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10. A method as in clam 8, wherein said alloy comprised of cobalt (Co) and chromium (Cr) is formed as a powder, wherein depositing said bearing material layer comprises heating said wire with a laser.
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11. A method as in clam 8, wherein said alloy comprised of cobalt (Co) and chromium (Cr) is formed as a wire, wherein depositing said bearing material layer comprises heating said wire with a laser.
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18. A method for constructing a medical implant device, comprising:
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forming a first structure including a porous base; depositing a corrosion barrier layer on said porous metal base, said deposition including laser based metal deposition; depositing a layer comprising Co and Cr (Co—
Cr) onto said corrosion barrier layer using laser based metal deposition;providing a second structure comprising Co—
Cr; and
bonding said deposited Co—
Cr portion of said first structure onto said second structure. - View Dependent Claims (19, 20, 21)
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22. A medical implant device, comprising:
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a porous metal base; corrosion barrier layer formed on said porous metal base by laser based metal deposition (LBMD); and a second layer formed on said corrosion barrier layer using LBMD, the second layer having a hardness greater than the porous metal base. - View Dependent Claims (23, 24, 25, 26, 27)
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28. A method for constructing a medical implant device, the method comprising:
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forming a structure from a base metal having a biocompatible composition; and depositing a bearing material onto a surface of the base metal using Laser Based Metal Deposition (LBMD). - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A medical implant device, comprising:
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a metal base structure having a biocompatible composition; and a bearing material formed onto said metal base structure by Laser Based Metal Deposition (LBMD); wherein the bearing material has a hardness greater than a hardness of the metal base structure. - View Dependent Claims (39, 40, 41)
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42. A method for constructing a medical implant device, the method comprising:
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forming a base shaped to be secured to a body part of a patient; and depositing a bearing material onto a surface of the base using Laser Based Metal Deposition (LBMD). - View Dependent Claims (43, 44, 45, 46, 47, 48, 49, 50)
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51. A medical implant device comprising:
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a base shaped to be secured to a body part of a patient; and a bearing material formed onto said base by Laser Based Metal Deposition (LBMD); wherein the bearing material has a hardness greater than a hardness of the base. - View Dependent Claims (52, 53, 54)
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Specification