Metal implant with anchoring surface
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United States of America Patent
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-
Mar 13, 2001
Grant Date -
N/A
app pub date -
May 20, 1999
filing date -
Apr 10, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
A surface for a metal implant has a coarse structure of elevations and depressions, with the surface being permeated by a network of protruding ribs which form nodes and interstices or meshes having an interstice width of 2 mm to 0.4 mm, while the depressions represent sections of spherical cavities. The nodes of the ribs can protrude the furthest like mountain peaks, whereas the ribs which connect two nodes each form a lower lying saddle if the spherical cavities penetrate one another slightly. Through coating with an electrochemically resistant protective lacquer, into which holes can be shot at a predetermined spacing without damaging the metal, with a laser for example, a coarsely structured intermediary surface can be economically provided by means of electrochemical erosion which receives a fine structure through sand blasting.
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