US5145371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distance member
Assignee: Nobel Biocare AB
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Filing: 1990-09-14
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Granted: 1992-09-08
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Expires: 2010-09-14
Abstract
Abstract The invention relates to a distance member (1) for a tooth implant anchored in the jaw, which distance member comprises, on the one hand, a sleeve-shaped element (5) which is designed to connect with the shoulder part of the securing element (fixture) (2) of the tooth implant and, on the other hand, a distance screw (7) provided with an externally threaded part (8) for engaging in a bore (9) in the upper part of the fixture for anchoring the sleeve-shaped distance element (5) on the fixture (2). The distance screw (7) is provided with an upper bore (25) for securing of a cap (4) embedded in the prosthesis construction. The upper part of the distance member is designed to be accommodated within a conical, upwardly narrowing delimiting surface defined by the said cap (4). The upper part (17) of the sleeve-shaped element has a conical peripheral surface (18) with an engagement part (14) designed to cooperate with a tubular counterstay (29) in a fitting tool, and the distance screw (7) also has a conical peripheral surface which forms an extensions of the conical upper part (17) of the sleeve-shaped element, and which has an external engagement part designed to cooperate with a second part, a tightener (27) in the fitting tool. The design of the distance member permits a low distance height and facilitates handling.
Inventors
- 👤 Lars Jorneus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:15
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/0048; A61C8/005; A61C8/0089; A61C8/0054; A61C8/006; A61C8/0069
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
210 words
A two-part distance member for a tooth implant including a fixture having a lower end anchored in the jaw and an upper portion, said distance member comprising: a sleeve-shaped element which has a lower portion connectable to the upper portion of the fixture and an upper portion having an end surface; and a distance screw provided with a) an externally threaded forward part for engaging into a threaded bore of the fixture; a proximal portion having a bore therein for receiving means for securing a prosthesis construction onto the distance member; and an outwardly projecting collar provided intermediate said forward part and proximal portion, said collar having a lower end surface adapted to rest onto the end surface of the upper portion of said sleeve-shaped element to secure said sleeve-shaped element on the fixture upon screwing of said threaded forward part of said distance screw into said bore of the fixture; and wherein the upper portion of said sleeve-shaped element includes a first conical outer surface and said proximal portion of said distance screw includes a second conical outer surface forming an extension of said first conical outer surface of said sleeve-shaped element such that said distance member is adapted to be accommodated into a conical upwardly converging delimiting surface.
Claim 2
Dependent Claim
210 words
A two-part distance member for a tooth implant including a fixture having a lower end anchored in the jaw and an upper portion, said distance member comprising: a sleeve-shaped element which has a lower portion connectable to the upper portion of the fixture and an upper portion having an end surface; and a distance screw provided with a) an externally threaded forward part for engaging into a threaded bore of the fixture; a proximal portion having a bore therein for receiving means for securing a prosthesis construction onto the distance member; and an outwardly projecting collar provided intermediate said forward part and proximal portion, said collar having a lower end surface adapted to rest onto the end surface of the upper portion of said sleeve-shaped element to secure said sleeve-shaped element on the fixture upon screwing of said threaded forward part of said distance screw into said bore of the fixture; and wherein the upper portion of said sleeve-shaped element includes a first conical outer surface and said proximal portion of said distance screw includes a second conical outer surface forming an extension of said first conical outer surface of said sleeve-shaped element such that said distance member is adapted to be accommodated into a conical upwardly converging delimiting surface.
Claim 3
Dependent Claim
27 words
A two-part distance member according to claim 1 wherein said delimiting surface is defined by a conical gold cap adapted to be embedded in a prosthesis construction.
Claim 4
Dependent Claim
26 words
A two-part distance member according to claim 1, wherein said sleeve-shaped element and said distance screw each comprises an external engagement part for a fitting tool.
Claim 5
Dependent Claim
79 words
A two-part distance member according to claim 1, wherein said first conical outer surface of the upper portion of said sleeve-shaped element is provided with a hexagonal engagement part for a tubular counterstay of a fitting tool and said second conical outer surface of the proximal portion of said distance screw also includes an external hexagonal engagement part for a tightener of a fitting tool, which tightener is designed to be introduced through a continuous channel in the counterstay.
Claim 6
Dependent Claim
61 words
A two-part distance member according to claim 1, wherein said lower portion on the sleeve-shaped element is a conical, downwardly narrowing base part adapted for bearing against a shoulder part formed on the upper portion of the fixture, and wherein said sleeve-shaped element further includes a short cylindrical intermediate part which merges, via an annular collar, into a conical upper portion.
Claim 7
Dependent Claim
40 words
A two-part distance member according to claim 5, wherein the conical base part of the sleeve-shaped element has an internal hexagonal engagement part which is adapted to cooperate with a corresponding hexagonal portion of the upper portion of the fixture.
Claim 8
Dependent Claim
34 words
A two-part distance member according to claim 1, wherein an annular collar of the sleeve-shaped element forms a bearing surface for a base portion of a conical gold cap embedded in the prosthesis construction.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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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) | 1995-09-08 | 1996-03-09 | 1996-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-08 | 2000-03-09 | 2000-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-08 | 2004-03-09 | 2004-09-08 | $7700.00 | Window Closed / Lapsed |