US5342199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylindrical dental implant
Assignee: 3M Innovative Properties Co
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Filing: 1993-10-08
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Granted: 1994-08-30
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Expires: 2013-10-08
Abstract
Abstract An improved cylindrical dental implant for anchoring a dental prosthesis in a hole formed in a jawbone comprising an elongated cylindrical member having a first end adapted to be inserted into the hole and a second end adapted to receive the dental prosthesis. At least one wedge member radially extends from the cylindrical member to effect immediate fixation of the cylindrical member in the hole. The wedge member has a base portion connected to the outer peripheral surface of the cylindrical member and a tapered portion having a first planar face and a second planar face. The first planar face and the second planar face intersect to form a thin longitudinally extending edge.
Inventors
- 👤 Edward S. Gillespie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:26
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/0018
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
171 words
A dental implant for anchoring a dental prosthesis in a hole formed in a jawbone, comprising: a cylindrical member having a first end, a second end and an outer peripheral surface, the first end being adapted to be inserted into the hole and the second end being adapted to receive the prosthesis; and at least one wedge member radially extending from the cylindrical member and having a base portion connected to the outer peripheral surface of the cylindrical member and a tapered portion having a first planar face and a second planar face, the first planar face and the second planar face being angled toward one another such that the intersection of the first planar face and the second planar face defines a thin longitudinally extending edge, the wedge member further comprising a first end portion angled to facilitate insertion of the wedge member into the hole, the first end portion comprising a planar face extending between the first and second planar faces of the tapered portion and the base portion.
Claim 2
Dependent Claim
171 words
A dental implant for anchoring a dental prosthesis in a hole formed in a jawbone, comprising: a cylindrical member having a first end, a second end and an outer peripheral surface, the first end being adapted to be inserted into the hole and the second end being adapted to receive the prosthesis; and at least one wedge member radially extending from the cylindrical member and having a base portion connected to the outer peripheral surface of the cylindrical member and a tapered portion having a first planar face and a second planar face, the first planar face and the second planar face being angled toward one another such that the intersection of the first planar face and the second planar face defines a thin longitudinally extending edge, the wedge member further comprising a first end portion angled to facilitate insertion of the wedge member into the hole, the first end portion comprising a planar face extending between the first and second planar faces of the tapered portion and the base portion.
Claim 3
Dependent Claim
47 words
The dental implant of claim 1 wherein the wedge member further comprises a second end portion oppositely disposed from the first end portion, the second end portion comprising a planar face extending between the first and second planar faces of the tapered portion and the base portion.
Claim 4
Dependent Claim
26 words
The dental implant of claim 2 wherein the angle between the planar face of the first end portion and the base portion is about 15 degrees.
Claim 5
Dependent Claim
45 words
The dental implant of claim 2 wherein the second end of the cylindrical member has a threaded bore extending longitudinally therethrough and wherein the prosthesis is secured to the second end of the cylindrical member with an attachment screw threadably engagable with the threaded bore.
Claim 6
Dependent Claim
26 words
The dental implant of claim 4 wherein the second end of the cylindrical member has an externally hexed head matable with a portion of the prosthesis.
Claim 7
Dependent Claim
16 words
The dental implant of claim 5 wherein the first end of the cylindrical member is rounded.
Claim 8
Dependent Claim
37 words
The dental implant of claim 6 wherein the second end of the cylindrical member has a polished surface and wherein the remainder of the cylindrical member is coated with a biocompatible material which forms a textured surface.
Claim 9
Dependent Claim
31 words
The dental implant of claim 7 wherein the cylindrical member further comprises a plurality of openings formed in the outer peripheral surface of the cylindrical member near the first end thereof.
Claim 10
Dependent Claim
35 words
The dental implant of claim 8 wherein the cylindrical member further comprises an annular depression formed near the first end of the cylindrical member to inhibit vertical displacement of the cylindrical member in the hole.
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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) | 1997-08-29 | 1998-02-28 | 1998-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-08-29 | 2002-02-28 | 2002-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-08-29 | 2006-02-28 | 2006-08-30 | $7700.00 | Window Closed / Lapsed |