Surface treatment methods for implants made of titanium or titanium alloy
AssigneeBiomet 3i, LLC
InventorsRoss Towse, Robert Mayfield
Life of this patent
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Abstract
A method of producing a generally uniformly roughened surface on Ti 6/4 alloy or titanium for contact with living bone comprises exposing the Ti 6/4 alloy or titanium in an aqueous solution of citric acid and hydrofluoric acid for a suitable time period to remove the native oxide from the Ti 6/4 alloy or titanium so as to expose the Ti 6/4 or titanium metal surface and create the desired surface topography.
Claims23
A method of producing a generally uniformly roughened surface on Ti 6/4 alloy for contact with living bone comprising the act of exposing the Ti 6/4 alloy in an aqueous solution of citric acid and hydrofluoric acid for a suitable time period to remove the native oxide from the Ti 6/4 alloy so as to expose the Ti 6/4 metal surface and create the desired surface topography.
A method of producing a generally uniformly roughened surface on Ti 6/4 alloy for contact with living bone comprising the act of exposing the Ti 6/4 alloy to an aqueous solution of citric acid and hydrofluoric acid for a suitable time period to remove the native oxide from the Ti 6/4 alloy so as to expose the Ti 6/4 metal surface and etch the exposed metal to achieve a roughened surface having irregularities with peak-to-valley heights of less than about 10 microns.
A method of preparing a surface of a Ti 6/4 alloy implant that is surgically implantable in living bone, the surface having a native oxide layer thereon, the method comprising the act of:
- exposing the Ti 6/4 alloy to an aqueous solution of citric acid and hydrofluoric acid for a suitable time period,
- wherein the aqueous solution of citric acid and hydrofluoric acid removes substantially all of the native oxide from the Ti 6/4 alloy and forms a modified surface with substantially uniform array of irregularities having peak-to-valley heights less than about 10 microns.
A method of preparing a surface of a Ti 6/4 alloy implant that is surgically implantable in living bone, the surface having a native oxide layer thereon, the method comprising the acts of:
- performing an initial treatment that removes substantially all of the native oxide from the surface of the Ti 6/4 alloy;
- and
- after performing the initial treatment, exposing the Ti 6/4 alloy to an aqueous solution of citric acid and hydrofluoric acid for a suitable time period to achieve a roughened surface having irregularities with peak-to-valley heights of less than about 10 microns.
A method of producing a generally uniformly roughened surface on titanium for contact with living bone comprising the act of exposing the titanium in an aqueous solution of citric acid and hydrofluoric acid for a suitable time period to remove the native oxide from the titanium so as to expose the titanium metal surface and create the desired surface topography.
A method of producing a generally uniformly roughened surface on titanium for contact with living bone, the method comprising the acts of:
- performing an initial treatment that removes substantially all of the native oxide from the surface of the titanium;
- and
- after performing the initial treatment, exposing the titanium in an aqueous solution of citric acid and hydrofluoric acid for a suitable time period to create the desired surface topography.
Dependencies are inferred from the claim text.