US4180910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Implant for an artificial tooth
Assignee: Institut Straumann AG
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Filing: 1978-10-13
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Granted: 1980-01-01
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Expires: 1998-10-13
Abstract
Abstract An implant for fixing an artificial replacement tooth to a jaw bone comprises a post for firmly holding the replacement tooth and at least two hollow cylindrical bodies. The bodies have mutually parallel axes, are rigidly connected to the post and open at one axial end. The cylindrical wall of each body is intended to be inserted into the jaw bone and is provided with means defining passages through which the jaw bone can grow to secure the implant to the jaw. A group of teeth may be fixed to the jaw by the use of a bridge and two or more implants.
Inventors
- 👤 Fritz Straumann
- 👤 Franz Sutter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:49
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/0018; A61C8/0037; A61C8/0039; A61F; A61F2310/00; A61F2310/00389; A61F2310/00395; A61F2310/00407
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
72 words
An implant for fixing an articial replacement tooth to a jaw, comprising a post for firmly holding said replacement tooth and at least two hollow cylindrical bodies having parallel axes, said bodies each being rigidly connected to said post, open at a respective one axial end and having a cylindrical wall which is intended to be inserted into the bone of said jaw and which is provided with means defining passages therethrough.
Claim 2
Dependent Claim
72 words
An implant for fixing an articial replacement tooth to a jaw, comprising a post for firmly holding said replacement tooth and at least two hollow cylindrical bodies having parallel axes, said bodies each being rigidly connected to said post, open at a respective one axial end and having a cylindrical wall which is intended to be inserted into the bone of said jaw and which is provided with means defining passages therethrough.
Claim 3
Dependent Claim
30 words
An implant as claimed in claim 1, wherein said bodies are so directly connected with each other that said walls form an external surface free of gaps between said bodies.
Claim 4
Dependent Claim
38 words
An implant as claimed in claim 1, wherein said bodies are connected together by a web which is provided with means defining passages therethrough and which has major surfaces extending parallel to said axes and to each other.
Claim 5
Dependent Claim
31 words
An implant as claimed in claim 1, wherein said post is rigidly connected by one end portion thereof to said bodies, an outwardly projecting collar being provided on said end portion.
Claim 6
Dependent Claim
23 words
An implant as claimed in claim 1, wherein said post has an axis extending generally in a plane disposed centrally between said axes.
Claim 7
Dependent Claim
31 words
An implant as claimed in claim 1, wherein each said body at its axial end thereof nearest said post is provided with an end wall provided with means defining passages therethrough.
Claim 8
Dependent Claim
38 words
An implant as claimed in claim 1 wherein each said body at its axial end thereof nearest said post is provided with an end wall, said end wall and said cylindrical wall being joined with a rounded portion.
Claim 9
Dependent Claim
18 words
An implant as claimed in claim 1, wherein said post joins the adjacent part with a rounded portion.
Claim 10
Dependent Claim
29 words
An implant as claimed in claim 1, wherein each said body has an external diameter which is from 0.75 to 1.25 times the axial length of said respective body.
Claim 11
Dependent Claim
12 words
An implant as claimed in claim 1 and of unitary metallic construction.
Claim 12
Dependent Claim
32 words
An implant as claimed in claim 1, comprising a basic member of non-porous metallic material, said body being provided at least on its outer surface with a coating of titanium containing pores.
Claim 13
Dependent Claim
16 words
An implant as claimed in claim 11, wherein said coating has been applied by flame spraying.
Claim 14
Dependent Claim
13 words
An implant as claimed in claim 11, wherein the basic member comprises titanium.
Claim 15
Dependent Claim
102 words
An implant for fixing an artificial replacement tooth to a jaw, comprising at least two hollow cylindrical body portions each having a cylindrical wall and abutting and joined to the other of said cylindrical walls, and having a first end wall at one end and an opposite end which is open, both said cylindrical side wall and said end wall having at least one passage therethrough, a post portion having an inner end joined to said body first wall and having an opposite outer free end means carried by said opposite outer free end for securing a replacement to said post portion.
Claim 16
Dependent Claim
102 words
An implant for fixing an artificial replacement tooth to a jaw, comprising at least two hollow cylindrical body portions each having a cylindrical wall and abutting and joined to the other of said cylindrical walls, and having a first end wall at one end and an opposite end which is open, both said cylindrical side wall and said end wall having at least one passage therethrough, a post portion having an inner end joined to said body first wall and having an opposite outer free end means carried by said opposite outer free end for securing a replacement to said post portion.
Claim 17
Dependent Claim
39 words
An implant according to claim 14 wherein said at least two cylindrical body portions comprises first and second cylindrical bodies, said post portion being joined to said bodies at said first wall and at the juncture of said bodies.
Claim 18
Dependent Claim
61 words
An implant according to claim 14 wherein said at least two cylindrical bodies comprise three cylindrical body portions including a central body portion and an end body portion on each side of said central body portion and joined thereto, said post being centrally arranged in respect to said central body portion and joined to said central body portion first end wall.
Claim 19
Dependent Claim
27 words
An implant according to claim 1 including a web disposed between said hollow body portions joining said body portions together, said post being connected to said web.
References Cited (Backward Citations)
US3499222A
Cited
US3829972A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-31 | 1983-07-02 | 1984-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-31 | 1987-07-02 | 1988-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-31 | 1991-07-02 | 1992-01-01 | $7700.00 | Window Closed / Lapsed |