US3977081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rigid implantations for surgical purposes
Assignee: Bioimplant SAS di Fiorino Pagani and C
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Filing: 1975-03-04
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Granted: 1976-08-31
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Expires: 1995-03-04
Abstract
Abstract Implants for dental use having, in addition to a high mechanical strength, also a high dielectricity providing a high resistance to electrochemical and chemical attack. A rigid implantation for dental uses comprises a metal core totally covered with a firmly adhering layer of tetrafluoroethylene or polymers thereof, this metal core being shaped so that a portion thereof is designed to be and remain endosseous and a portion thereof is designed to be and remain juxtaosseous, the implantation having rounded edges.
Inventors
- 👤 Celestino Zambelli
- 👤 Fiorino Pagani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:31
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/0018; A61C8/0019; A61C8/0012; A61C8/0013; A61C8/0016; A61C8/0031
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
73 words
A rigid implantation for dental uses, comprising a metal core completely covered with a firmly adhering layer of tetrafluoroethylene or polymers thereof, including a tooth supporting stump, an elongated endosseous portion supporting said stump and having means for implantation in the jawbone of a patient and a juxtaosseous portion located between said stump and said endosseous portion with means for externally bearing on said jawbone of the patient, the implantation having rounded edges.
Claim 2
Dependent Claim
73 words
A rigid implantation for dental uses, comprising a metal core completely covered with a firmly adhering layer of tetrafluoroethylene or polymers thereof, including a tooth supporting stump, an elongated endosseous portion supporting said stump and having means for implantation in the jawbone of a patient and a juxtaosseous portion located between said stump and said endosseous portion with means for externally bearing on said jawbone of the patient, the implantation having rounded edges.
Claim 3
Dependent Claim
22 words
An implantation as claimed in claim 1, wherein said juxtaosseous portion comprises at least two flattened arms projecting from the endosseous portion.
Claim 4
Dependent Claim
25 words
An implantation as claimed in claim 2, wherein said flattened arms are firmly secured to said endosseous portion and spaced apart from said tooth-supporting stump.
Claim 5
Dependent Claim
50 words
An implantation as claimed in claim 1, wherein said endosseous portion comprises two separate blades and said juxtaosseous portion comprises a rigid bar having enlarged ends provided with holes, said blades including respective extensions projecting therefrom through said holes in said bar, and threaded tooth-supporting stumps fastened to said blades.
Claim 6
Dependent Claim
18 words
An implantation as claimed in claim 4, wherein said extensions have threaded holes receiving said threaded tooth-supporting stumps.
References Cited (Backward Citations)
US1140538A
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US3499222A
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US3435526A
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US3579829A
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US3748739A
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US3837080A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-31 | 1980-03-01 | 1980-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-31 | 1984-03-01 | 1984-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-31 | 1988-03-01 | 1988-08-31 | $7700.00 | Window Closed / Lapsed |