Patent US5484286A successfully refreshed from Google Patents.
US5484286A
Expired / Lapsed
US
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Method for the preparation of implants made of titanium or alloys thereof
Assignee: AstraZeneca AB
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Filing: 1991-10-04
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Granted: 1996-01-16
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Expires: 2011-10-04
Abstract
Abstract The invention relates to a method for treating the surface of surgical implants made of titanium or a titanium alloy, for instance dental implants, before implantation in bone tissue. The method results in a roughened exterior implant surface and at the same time a cleaning action is obtained, should there be any contaminants. The surface is blasted with particles of an oxide of titanium, preferably titanium dioxide. In this way an implant having an improved retention in bone tissue is obtained. The blasted implant is used in a method for treating toothlessness.
Inventors
- 👤 Stig G. W. Hansson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:19
CPC Classifications
B; B24; B24C; B24C11/00; A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/30767; A61L; A61L27/00; A61L27/02; A61L27/04; A61L27/06; A61L27/28; A61L27/30; A61L27/306; B24C1/00; B24C1/06; A61C; A61C8/00; A61C8/0018; A61C8/0037; A61C2008/0046; A61F2002/30001; A61F2002/30667; A61F2002/30719; A61F2002/30906; A61F2250/00; A61F2250/0058; A61F2250/0092; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00023; A61F2310/00389; A61F2310/00592; A61F2310/00598; A61F2310/00616
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
26 words
A method for treating the surface of implants of titanium or an alloy of titanium wherein the surface is blasted with particles of a titanium oxide.
Claim 2
Independent Claim
26 words
A method for treating the surface of implants of titanium or an alloy of titanium wherein the surface is blasted with particles of a titanium oxide.
Claim 3
Dependent Claim
13 words
A method according to claim 1 wherein the titanium oxide is titanium dioxide.
Claim 4
Independent Claim
23 words
A method according to claims 1 or 2 wherein the particles used have a size within the range of 1 to 2000 μm.
Claim 5
Dependent Claim
21 words
A method according to claim 3 wherein the particles used have a size within the range of 1 to 300 μm.
Claim 6
Dependent Claim
21 words
A method according to claim 3 wherein the particles used have a size within the range of 1 to 50 μm.
Claim 7
Dependent Claim
14 words
A method according to claim 3, wherein the implant treated is a dental implant.
Claim 8
Independent Claim
16 words
A method according to claims 1 or 2 wherein the implant treated is a dental implant.
Claim 9
Independent Claim
53 words
A method for treating toothlessness in a jaw of a patient, wherein the surface of at least one dental implant is blasted with particles of a titanium oxide and wherein the implant is implanted into the jaw of the patient whereafter at least one tooth or dental bridge is attached to the implant.
Claim 10
Independent Claim
53 words
A method for treating toothlessness in a jaw of a patient, wherein the surface of at least one dental implant is blasted with particles of a titanium oxide and wherein the implant is implanted into the jaw of the patient whereafter at least one tooth or dental bridge is attached to the implant.
Claim 11
Independent Claim
24 words
A method for increasing the fixation strength of bone implants wherein the surface of the implants is blasted with particles of a titanium oxide.
Claim 12
Independent Claim
24 words
A method for increasing the fixation strength of bone implants wherein the surface of the implants is blasted with particles of a titanium oxide.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-01-15 | 1999-07-17 | 2000-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-01-15 | 2003-07-17 | 2004-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-01-15 | 2007-07-17 | 2008-01-16 | $7700.00 | Window Closed / Lapsed |