US5076788A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grooved, cylindrical dental implant anchoring means
Assignee: Zimmer Dental Inc
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Filing: 1988-10-05
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Granted: 1991-12-31
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Expires: 2008-10-05
Abstract
Abstract A substantially cylindrically-shaped dental implant includes on its outer surface one or more longitudinally-extending grooves and, near the base of the implant, one or more transversely-extending openings that communicate with the grooves and with a chamber internal to the implant. The chamber also communicates through an upwardly-extending passage with an apical opening at the base of the implant to permit tissue, fluids and debris to escape from a jawbone opening formed to receive the implant.
Inventors
- 👤 Gerald A. Niznick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:38
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/0018
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
99 words
Dental implant anchoring means having a base and a substantially right circular cylindrically-shaped outer surface, said outer surface including substantially no thread means thereon, and including, on said outer surface, at least one longitudinally-extending, slot-shaped groove; near the base of said implant, at least one transversely-extending opening; inside and near the base of said anchoring means, an internal chamber communicating with said at least one transversely-extending opening; and, at the base of said implant, an apical opening communicating through an upwardly-extending passage with said internal chamber, wherein said at least one groove communicates with at least one transversely-extending opening.
Claim 2
Dependent Claim
99 words
Dental implant anchoring means having a base and a substantially right circular cylindrically-shaped outer surface, said outer surface including substantially no thread means thereon, and including, on said outer surface, at least one longitudinally-extending, slot-shaped groove; near the base of said implant, at least one transversely-extending opening; inside and near the base of said anchoring means, an internal chamber communicating with said at least one transversely-extending opening; and, at the base of said implant, an apical opening communicating through an upwardly-extending passage with said internal chamber, wherein said at least one groove communicates with at least one transversely-extending opening.
Claim 3
Dependent Claim
22 words
The dental implant anchoring means of claim 1 further comprising a plurality of said grooves and a plurality of said transverse openings.
Claim 4
Dependent Claim
24 words
The dental implant anchoring means of claim 1 wherein each of said grooves communicates directly with one, and only one, of said transverse openings.
Claim 5
Dependent Claim
43 words
The dental implant anchoring means of claim 1 further comprising an opening at the top of said implant, said opening having a size and shape adapted to receive a dental insert that fits within said opening at the top of said dental implant.
Claim 6
Dependent Claim
33 words
The dental implant of claim 4 further comprising within said opening at the top of said implant, a downwardly-extending passage, said passage having thread means on at least a portion of its surface.
Claim 7
Dependent Claim
82 words
Dental implant anchoring means having a base and a substantially right circular cylindrically-shaped outer surface, said outer surface including substantially no thread means thereon, and including, on said outer surface, at least one longitudinally-extending, slot-shaped groove; near the base of said implant, at least one transversely-extending opening; and inside and near the base of said anchoring means, an internal chamber communicating with said at least one transversely-extending opening, wherein said at least one groove communicates with said at least one transversely-extending opening.
Claim 8
Dependent Claim
82 words
Dental implant anchoring means having a base and a substantially right circular cylindrically-shaped outer surface, said outer surface including substantially no thread means thereon, and including, on said outer surface, at least one longitudinally-extending, slot-shaped groove; near the base of said implant, at least one transversely-extending opening; and inside and near the base of said anchoring means, an internal chamber communicating with said at least one transversely-extending opening, wherein said at least one groove communicates with said at least one transversely-extending opening.
Claim 9
Dependent Claim
22 words
The dental implant anchoring means of claim 6 further comprising a plurality of said grooves and a plurality of said transverse openings.
Claim 10
Dependent Claim
24 words
The dental implant anchoring means of claim 7 wherein each of said grooves communicates directly with one, and only one, of said transverse openings.
Claim 11
Dependent Claim
17 words
The dental implant anchoring means of claim 6 wherein said outer surface includes at least one projection.
Claim 12
Dependent Claim
46 words
The dental implant anchoring means of claim 6 further comprising an opening at the top of said implant, having a size and shape adapted to receive a dental insert and including a post means that fits within said opening at the top of said dental implant.
Claim 13
Dependent Claim
33 words
The dental implant of claim 10 further comprising, within said opening at the top of said implant, a downwardly-extending passage, said passage having thread means on at least a portion of its surface.
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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) | 1994-12-30 | 1995-07-01 | 1995-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-30 | 1999-07-01 | 1999-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-30 | 2003-07-01 | 2003-12-31 | $7700.00 | Window Closed / Lapsed |