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US5213500A Expired / Lapsed US ⏱️ 0.0 years remaining

Stress absorbing semipermanent dental implant system

Assignee: Individual
•
Filing: 1992-08-10
•
Granted: 1993-05-25
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Expires: 2012-08-10
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Abstract

Abstract A dental implant system comprising a foundation fixture to be embedded in the jaw bone; said system further comprising a hollow transmucosal abutment member supporting a keeper for either a single tooth prosthesis or multiple teeth prostheses. The abutment comprises a plurality of inwardly curved resilient members defining a hollow column extending from a series of external threads which connect, in torus-like fashion, to a hollow pedestal section for the abutment. The internal surfaces of the resilient members have configured protrusions configured to interlock with the keeper. This configuration, in a no-load condition, allows the keeper to rest within the foundation fixture at sufficiently spaced-apart relationship between the keeper and the fixture to maintain a shock-absorbing fluid reservoir. An elastic seal is fitted between the keeper base and the pedestal of the abutment for closure of the reservoir.

Inventors

  • 👤 Alfred Salazar
  • 👤 Ricardo Guerra

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 16:57
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/0086; A61C8/0018; A61C8/0037; A61C8/0045

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 206 words
A dental implant system comprising: a. a foundation fixture having an internal socket in spaced-apart relationship from one end of an elongated keeper, said spaced-apart relationship defining a shock-absorbing fluid reservoir force dampening means; and b. a transmucosal abutment telescopically fitted within said foundation fixture, said abutment comprising a plurality of vertical resilient members having protrusions at their inner surface and defining a hollow column extending from external threads which further define the hollow column and said threads configured in torus-like fashion above a hollow pedestal member of the abutment; and c. a keeper extending telescopically through the abutment and at one end resting within the fixture socket, said keeper having a circumferential circular groove to releaseably receive by "snap-action" the protrusions of the abutment so as to define a second dampening means, and having a web-like base fitted to a single or multiple tooth prostheses; and d. a seal member fitted between the web-like base of the keeper and the pedestal of the abutment so as to form a third force dampening means; whereas the implant more effectively mirrors the longitudinal movement of natural teeth, mimics the shock-absorbing capabilities of natural teeth, and relieves the prosthesis when impacted by excessive force without injuring the jawbone.
Claim 2
Dependent Claim 206 words
A dental implant system comprising: a. a foundation fixture having an internal socket in spaced-apart relationship from one end of an elongated keeper, said spaced-apart relationship defining a shock-absorbing fluid reservoir force dampening means; and b. a transmucosal abutment telescopically fitted within said foundation fixture, said abutment comprising a plurality of vertical resilient members having protrusions at their inner surface and defining a hollow column extending from external threads which further define the hollow column and said threads configured in torus-like fashion above a hollow pedestal member of the abutment; and c. a keeper extending telescopically through the abutment and at one end resting within the fixture socket, said keeper having a circumferential circular groove to releaseably receive by "snap-action" the protrusions of the abutment so as to define a second dampening means, and having a web-like base fitted to a single or multiple tooth prostheses; and d. a seal member fitted between the web-like base of the keeper and the pedestal of the abutment so as to form a third force dampening means; whereas the implant more effectively mirrors the longitudinal movement of natural teeth, mimics the shock-absorbing capabilities of natural teeth, and relieves the prosthesis when impacted by excessive force without injuring the jawbone.
Claim 3
Dependent Claim 13 words
The system of claim 1 wherein the shock-absorbing fluid is an antibacterial fungicide.
Claim 4
Dependent Claim 28 words
The system of claim 1 wherein the keeper has a gradual conical tapering shape to facilitate expulsion from the implant in the event of an extreme frontal force.
Claim 5
Dependent Claim 26 words
The system of claim 1 wherein the foundation fixture comprises a closed dome-shaped end, a hexagonal middle body, and a cylindrical end opposite the domed end.
Claim 6
Dependent Claim 18 words
The system of claim 1 wherein the resilient members of the abutment are at least four in number.
Claim 7
Dependent Claim 14 words
The system of claim 1 wherein the resilient members are inwardly bent leaf springs.
Claim 8
Dependent Claim 11 words
The system of claim 1 wherein the shock-absorbing fluid is petrolatum.

References Cited (Backward Citations)

US3344522A Cited
US3955280A Cited
US4622010A Cited
US4881897A Cited
US4950161A Cited
US4938693A Cited
US4957437A Cited
US5049073A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1996-05-24 1996-11-23 1997-05-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2000-05-24 2000-11-23 2001-05-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2004-05-24 2004-11-23 2005-05-25 $7700.00 Window Closed / Lapsed

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