Patent US6220860B1 successfully refreshed from Google Patents.
US6220860B1
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Dental implant
Assignee: AstraZeneca AB
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Filing: 1999-07-13
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Granted: 2001-04-24
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Expires: 2019-07-13
Abstract
Abstract Dental implant ( 10 ) for rotation into the bone tissue of a jaw bone consisting of a body having an axis of rotation, a coronal end surface ( 5 ), an apical end surface ( 1 ) and a generally cylindrical section ( 7 ) which has a coronal edge coincident with, or in close proximity to, the coronal end surface and an outer peripheral surface which extends apically towards the apical end surface from the coronal edge. The outer peripheral surface is presented by a circumferentially-oriented roughness ( 19 ) comprising a series of circumferentially-oriented peaks which are axially spaced apart by troughs and oriented at an inclined angle to the axis of rotation. The height from the troughs to the peaks throughout the circumferentially-oriented roughness is greater than 0.2 mm.
Inventors
- 👤 Stig Hansson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:57
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/0018; A61C8/0022; A61C8/0025
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
158 words
A dental implant for rotation into the bone tissue of a jaw bone consisting of a body having: (a) an axis of rotation; (b) a coronal end surface; (c) an apical end surface; and (d) a generally cylindrical section which has: (i) a coronal edge in close proximity to, the coronal end surface, and (ii) an outer peripheral surface which extends apically towards the apical end surface from the coronal edge and is presented by a circumferentially-oriented roughness comprising a series of circumferentially-oriented peaks which are axially spaced apart by troughs and oriented at an inclined angle to the axis of rotation; wherein the height from the troughs to the peaks throughout the circumferentially-oriented roughness is greater than 0.2 mm, and the coronal edge of the generally cylindrical section is spaced from the coronal end surface of the body by no more than approximately 4% of the distance between the coronal and apical end surfaces of the body.
Claim 2
Dependent Claim
158 words
A dental implant for rotation into the bone tissue of a jaw bone consisting of a body having: (a) an axis of rotation; (b) a coronal end surface; (c) an apical end surface; and (d) a generally cylindrical section which has: (i) a coronal edge in close proximity to, the coronal end surface, and (ii) an outer peripheral surface which extends apically towards the apical end surface from the coronal edge and is presented by a circumferentially-oriented roughness comprising a series of circumferentially-oriented peaks which are axially spaced apart by troughs and oriented at an inclined angle to the axis of rotation; wherein the height from the troughs to the peaks throughout the circumferentially-oriented roughness is greater than 0.2 mm, and the coronal edge of the generally cylindrical section is spaced from the coronal end surface of the body by no more than approximately 4% of the distance between the coronal and apical end surfaces of the body.
Claim 3
Dependent Claim
45 words
The implant as claimed in claim 1 , wherein the coronal edge of the generally cylindrical section is spaced from the coronal end surface of the body by a coronal section of the body having an outer peripheral surface not presented by a circumferentially-oriented roughness.
Claim 4
Dependent Claim
25 words
The implant as claimed in claim 1 , wherein the height from the troughs to the peaks throughout the circumferentially-oriented roughness is approximately 0.3 mm.
Claim 5
Dependent Claim
20 words
The implant as claimed in claim 1 , wherein the circumferentially-oriented roughness is formed by one or more screw threads.
Claim 6
Dependent Claim
24 words
The implant as claimed in claim 1 , wherein the circumferentially-oriented roughness is formed by a series of axially spaced-apart circumferential lines of beads.
Claim 7
Dependent Claim
17 words
The implant as claimed in claim 5 , wherein the beads in each line are circumferentially spaced-apart.
Claim 8
Dependent Claim
43 words
The implant as claimed in claim 1 , wherein the outer peripheral surface of the generally cylindrical section extends apically from the coronal edge over a major proportion of the distance between the coronal edge and the apical end surface of the body.
Claim 9
Dependent Claim
62 words
The implant as claimed in claim 1 , wherein the generally cylindrical section has an apical edge which is spaced from the apical end surface of the body by no more than approximately 20% of the distance between the coronal and apical end surfaces of the body and the outer peripheral surface of the generally cylindrical section extends to the apical edge.
Claim 10
Dependent Claim
118 words
A dental implant for rotation into the bone tissue of a jaw bone consisting of a body having: (a) an axis of rotation; (b) a coronal end surface; (c) an apical end surface; and (d) a generally cylindrical section which has: (i) a coronal edge coincident with the coronal end surface, and (ii) an outer peripheral surface which extends apically towards the apical end surface from the coronal edge and is presented by a circumferentially-oriented roughness comprising a series of circumferentially-oriented peaks which are axially spaced apart by troughs and oriented at an inclined angle to the axis of rotation; wherein the height from the troughs to the peaks throughout the circumferentially-oriented roughness is greater than 0.2 mm.
Claim 11
Dependent Claim
118 words
A dental implant for rotation into the bone tissue of a jaw bone consisting of a body having: (a) an axis of rotation; (b) a coronal end surface; (c) an apical end surface; and (d) a generally cylindrical section which has: (i) a coronal edge coincident with the coronal end surface, and (ii) an outer peripheral surface which extends apically towards the apical end surface from the coronal edge and is presented by a circumferentially-oriented roughness comprising a series of circumferentially-oriented peaks which are axially spaced apart by troughs and oriented at an inclined angle to the axis of rotation; wherein the height from the troughs to the peaks throughout the circumferentially-oriented roughness is greater than 0.2 mm.
Claim 12
Dependent Claim
25 words
The implant as claimed in claim 9 , wherein the height from the troughs to the peaks throughout the circumferentially-oriented roughness is approximately 0.3 mm.
Claim 13
Dependent Claim
20 words
The implant as claimed in claim 9 , wherein the circumferentially-oriented roughness is formed by one or more screw threads.
Claim 14
Dependent Claim
24 words
The implant as claimed in claim 9 , wherein the circumferentially-oriented roughness is formed by a series of axially spaced-apart circumferential lines of beads.
Claim 15
Dependent Claim
17 words
The implant as claimed in claim 12 , wherein the beads in each line are circumferentially spaced-apart.
Claim 16
Dependent Claim
43 words
The implant as claimed in claim 9 , wherein the outer peripheral surface of the generally cylindrical section extends apically from the coronal edge over a major proportion of the distance between the coronal edge and the apical end surface of the body.
Claim 17
Dependent Claim
62 words
The implant as claimed in claim 9 , wherein the generally cylindrical section has an apical edge which is spaced from the apical end surface of the body by no more than approximately 20% of the distance between the coronal and apical end surfaces of the body and the outer peripheral surface of the generally cylindrical section extends to the apical edge.
References Cited (Backward Citations)
US4416629A
Cited
US4988299A
Cited
US5695336A
Cited
US5310343A
Cited
US5588838A
Cited
WO1994017750A1
Cited
US5527183A
Cited
US5642996A
Cited
US5915967A
Cited
US5639237A
Cited
WO1997029713A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-04-23 | 2004-10-23 | 2005-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-04-23 | 2008-10-23 | 2009-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-04-23 | 2012-10-23 | 2013-04-24 | $7700.00 | Window Closed / Lapsed |