CA2467320A1 - Surface treatment process for implants made of titanium alloy - Google Patents

Surface treatment process for implants made of titanium alloy Download PDF

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Publication number
CA2467320A1
CA2467320A1 CA002467320A CA2467320A CA2467320A1 CA 2467320 A1 CA2467320 A1 CA 2467320A1 CA 002467320 A CA002467320 A CA 002467320A CA 2467320 A CA2467320 A CA 2467320A CA 2467320 A1 CA2467320 A1 CA 2467320A1
Authority
CA
Canada
Prior art keywords
aqueous solution
hydrofluoric acid
alloy
hydrochloric acid
native oxide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002467320A
Other languages
French (fr)
Other versions
CA2467320C (en
Inventor
T. Tait Robb
Bruce Berckmans Iii
Ross W. Towse
Robert L. Mayfield
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Biomet 3I LLC
Original Assignee
Implant Innovations Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=33030128&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2467320(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Implant Innovations Inc filed Critical Implant Innovations Inc
Publication of CA2467320A1 publication Critical patent/CA2467320A1/en
Application granted granted Critical
Publication of CA2467320C publication Critical patent/CA2467320C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F1/00—Etching metallic material by chemical means
    • C23F1/10—Etching compositions
    • C23F1/14—Aqueous compositions
    • C23F1/16—Acidic compositions
    • C23F1/26—Acidic compositions for etching refractory metals
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0012—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the material or composition, e.g. ceramics, surface layer, metal alloy
    • A61C8/0013—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the material or composition, e.g. ceramics, surface layer, metal alloy with a surface layer, coating
    • A61C8/0015—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the material or composition, e.g. ceramics, surface layer, metal alloy with a surface layer, coating being a conversion layer, e.g. oxide layer
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
    • A61L27/02—Inorganic materials
    • A61L27/04—Metals or alloys
    • A61L27/06—Titanium or titanium alloys
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
    • A61L27/50—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0018—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the shape
    • A61C8/0037—Details of the shape
    • A61C2008/0046—Textured surface, e.g. roughness, microstructure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/3094—Designing or manufacturing processes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2002/30925—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth etched
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00011—Metals or alloys
    • A61F2310/00023—Titanium or titanium-based alloys, e.g. Ti-Ni alloys
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2400/00—Materials characterised by their function or physical properties
    • A61L2400/18—Modification of implant surfaces in order to improve biocompatibility, cell growth, fixation of biomolecules, e.g. plasma treatment
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49567—Dental appliance making

Abstract

A titanium 6 A1/4V alloy is provided with a surface topography that is similar to the Osseotite® surface produced on commercially pure titanium. Native oxide is removed from the Ti 6A/J4V alloy, followed by contacting the metal at ambient temperature with an aqueous hydrochloric acid solution containing a relatively small amount of hydrofluoric acid.

Claims (20)

1. A method of producing a uniformly roughened surface on Ti 6/4 alloy for contact with living bone comprising:
(a) removing the native oxide from said Ti 6/4 alloy to expose metal;
(b) contacting said exposed metal with an aqueous solution of hydrofluoric acid and hydrochloric acid for a suitable period of time to create the desired surface topography.
2. A method of Claim 1 wherein said desired surface topography is a roughened surface having irregularities with peak-to-valley heights of less than 10 microns.
3. A method of Claim 1, wherein roughened surface has peak-to-peak distances of about 1-3µm.
4. A method of Claim 1, wherein said native oxide is removed by contacting said Ti 6/4 alloy with an aqueous solution of hydrofluoric acid for a suitable period of time.
5. A method of Claim 4 wherein said aqueous solution contains about 7.9 to 9.0 wt% hydrofluoric acid.
6. A method of Claim 5 wherein said aqueous solution contains about 0.005 to 1.0 wt% hydrofluoric acid and about 10 to 30 wt% hydrochloric acid.
7. A method of claim 6 wherein said aqueous solution contains about 0.0845 wt% hydrofluoric acid and about 20 wt% hydrochloric acid.
8. A method of producing a uniformly roughened surface on Ti 6/4 alloy for contact with living bone comprising:
(a) removing the native oxide from said Ti 6/4 alloy to expose metal by contacting said alloy with an aqueous solution of hydrofluoric acid for a suitable period of time;

(b) rinsing said alloy after said native oxide removal of (a);
(c) contacting said exposed metal in an aqueous solution of hydrofluoric acid and hydrochloric acid at room temperature for a suitable period of time to create the desired surface topography;
(d) rinsing the surface produced in step (c) to remove the residual aqueous solution of (c).
9. A method of Claim 8 wherein said aqueous solution of step (a) contains about 7.9 to 9.0 wt% hydrofluoric acid.
10. A method of Claim 9 wherein said aqueous solution of step (a) contains about 8.45 wt% hydrofluoric acid.
11. A method of Claim 8 wherein said aqueous solution of step (c) contains about 0.005 to 1.0 wt% hydrofluoric acid and about 10 to 30 wt% hydrochloric acid.
12. A method of Claim 11 wherein said aqueous solution of step (c) contains about 0.053 to 0.105 wt% hydrofluoric acid and about 19 to 21 wt% hydrochloric acid.
13. A method of Claim 12 wherein said aqueous solution of step (c) contains about 0.0845 wt% hydrofluoric acid and about 20 wt% hydrochloric acid.
14. A dental implant of Ti 6/4 alloy for contact with living bone comprising:
a. a head section for mounting dental prosthesis components;
b. a threaded section for engaging said living; bone;
c. a neck section disposed between said head section and said threaded section; wherein at least a portion of said threaded section has a desired roughened surface topography created by etching said threaded portion with an aqueous solution of hydrofluoric acid and hydrochloric acid.
15. A dental implant of Claim 14 wherein native oxide is removed from said threaded portion prior to said etching with an aqueous solution of hydrofluoric acid and hydrochloric acid.
16. A dental implant of Claim 15 wherein said native oxide is removed by contacting said threaded portion with an aqueous solution of hydrofluoric acid.
17. A dental implant of Claim 16 wherein said aqueous solution contains about 7.9 to 9.0 wt% hydrofluoric acid.
18. A dental implant of Claim 14 wherein said aqueous solution contains about 0.005 to 1.0 wt% hydrofluoric acid and about 10 to 30 wt% hydrochloric acid.
19. A dental implant of Claim 18 wherein said aqueous solution contains about 0.0845 wt% hydrofluoric acid and about 20 wt% hydrochloric acid.
20. A method of producing a uniformly roughened surface of Ti 6/4 alloy for contact with living bone comprising:
a. removing the native oxide from said Ti 6/4 alloy to produce an exposed metal surface; and b. etching said exposed metal surface with Kelley's Solution to create, the desired surface topography.
CA2467320A 2003-05-16 2004-05-14 Surface treatment process for implants made of titanium alloy Expired - Fee Related CA2467320C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US47146303P 2003-05-16 2003-05-16
US60/471,463 2003-05-16
US10/843,916 US8251700B2 (en) 2003-05-16 2004-05-12 Surface treatment process for implants made of titanium alloy
US10/843,916 2004-05-12

Publications (2)

Publication Number Publication Date
CA2467320A1 true CA2467320A1 (en) 2004-11-16
CA2467320C CA2467320C (en) 2010-02-09

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ID=33030128

Family Applications (1)

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CA2467320A Expired - Fee Related CA2467320C (en) 2003-05-16 2004-05-14 Surface treatment process for implants made of titanium alloy

Country Status (7)

Country Link
US (3) US8251700B2 (en)
EP (1) EP1477141B2 (en)
JP (1) JP4781639B2 (en)
KR (1) KR101106158B1 (en)
AT (1) ATE366558T1 (en)
CA (1) CA2467320C (en)
DE (1) DE602004007427T3 (en)

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