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AssigneeNobel Biocare AB
InventorsJan Hall, Fredrik Engman
Estimating the term…
An implant (1) has attachment and hole-insert parts (2, 3) with an outer surface or outer surfaces having external layer arrangements (6, 7). The implant can be provided in a known manner with threads (3a, 3b) on cylindrical and conical portions. The implant is made in principle in two production stages. In a first production stage, the outer surface or outer surfaces (6a) of the implant are given a relatively high roughness value and/or a relatively high degree of porosity. In a second stage, the uneven or porous surface thus obtained is coated with an oxide layer (7) which can be uniform or can have different thicknesses along the longitudinal and/or circumferential directions(s) of the implant. In one embodiment, the oxide layer (7) can be coated with a bone-growth agent or bone-growth-promoting agent and/or calcium phosphate (16), for example by means of chemical deposition, dipping or sputtering.
Implant (1) which has attachment and hole-insert parts (2, 3) with an outer surface or outer surfaces (2a, 3a, 3b) having external layer arrangements (6, 7), characterized in that one or more arrangements have a machined or treated inner surface (6a) with a high roughness value and/or porosity and an outer oxide layer (7) applied on top of the inner surface.
Implant according to any of the preceding patent claims, characterized in that it comprises one or more outer threads (3a, 3b) on said hole-insert part(s) (3).
Method for producing an external layer arrangement (6, 7 and possibly 16) on the outer surface(s) (2a, 3a, 3b) of the implant with attachment and hole-insert parts, characterized in that the implant (1) is machined and/or treated to produce a high roughness value and/or a high degree of porosity on the outer surface (6a), and in that the machined and/or treated and/or porous surface (6a) is thereafter coated with an oxide layer (7).
Method according to any of the preceding patent claims, characterized in that said oxide layer (7) is given a thickness of 5 nm to 20 μm.
Dependencies are inferred from the claim text.