US4344757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Implant a geometry variable
Assignee: Individual
•
Filing: 1980-05-09
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Granted: 1982-08-17
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Expires: 2000-05-09
Abstract
Abstract The base of the implant of the type composed of a perforated base, of a threaded shaft and is asymmetrical in relation to the shaft and the areas of the base, respectively the perforated parts, situated on both sides of the shaft are equal but of a different conformation.
Inventors
- 👤 Robert Streel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:47
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/0089; A61C8/001; A61C8/0018; A61C8/0048
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
72 words
A variable geometry implant comprising a base formed with perforations, a threaded shaft extending from said base, said base is asymmetrically irregular with respect to the shaft, but in perfect balance with respect to said shaft, the base has surface areas respectively on both sides of the shaft which are equal but different in shape, and the perforations on both sides of the shaft are equal in area but different in shape.
Claim 2
Dependent Claim
72 words
A variable geometry implant comprising a base formed with perforations, a threaded shaft extending from said base, said base is asymmetrically irregular with respect to the shaft, but in perfect balance with respect to said shaft, the base has surface areas respectively on both sides of the shaft which are equal but different in shape, and the perforations on both sides of the shaft are equal in area but different in shape.
Claim 3
Dependent Claim
45 words
The implant according to claim 1, wherein said base has an end on each side of the shaft formed with extensions respectively having the same area and being bendable so as to facilitate fitting of the implant and to increase its stability when in place.
Claim 4
Dependent Claim
28 words
The implant according to claim 1, wherein the surface area on one side of the shaft is square and the surface area on the other side is rectangular.
Claim 5
Dependent Claim
40 words
The implant according to claim 1, wherein said base tapers in plan view from a wider of said surface area on one side of the shaft to a narrower of said surface area on the other side of said shaft.
Claim 6
Dependent Claim
142 words
A variable geometry implant comprising a base formed with perforations, a threaded shaft extending from said base, said base is asymmetrically irregular with respect to the shaft, but in perfect balance with respect to said shaft, the base has surface areas respectively on both sides of the shaft which are equal but different in shape, and the perforations on both sides of the shaft are equal in area but different in shape, said base has an end on each side of the shaft formed with extensions respectively having the same area and being bendable so as to facilitate fitting of the implant and to increase its stability when in place, said base being formed with weakened portions which facilitate removing said extensions so as to reduce the area of the base while simultaneously retaining the perfect balance with respect to said shaft.
Claim 7
Dependent Claim
142 words
A variable geometry implant comprising a base formed with perforations, a threaded shaft extending from said base, said base is asymmetrically irregular with respect to the shaft, but in perfect balance with respect to said shaft, the base has surface areas respectively on both sides of the shaft which are equal but different in shape, and the perforations on both sides of the shaft are equal in area but different in shape, said base has an end on each side of the shaft formed with extensions respectively having the same area and being bendable so as to facilitate fitting of the implant and to increase its stability when in place, said base being formed with weakened portions which facilitate removing said extensions so as to reduce the area of the base while simultaneously retaining the perfect balance with respect to said shaft.
Claim 8
Dependent Claim
137 words
A variable geometry implant comprising a base formed with perforations, a threaded shaft extending from said base, said base is asymmetrically irregular with respect to the shaft, but in perfect balance with respect to said shaft, the base has surface areas respectively on both sides of the shaft which are equal but different in shape, and the perforations on both sides of the shaft are equal in area but different in shape, said base has an outer edge on each side of said shaft formed with tongues, respectively, which are the same in area and are distributed differently on both sides of the shaft, and said base being formed with weakened portions which facilitate removing said tongues so as to reduce the area of the base while simultaneously retaining the perfect balance with respect to said shaft.
Claim 9
Dependent Claim
137 words
A variable geometry implant comprising a base formed with perforations, a threaded shaft extending from said base, said base is asymmetrically irregular with respect to the shaft, but in perfect balance with respect to said shaft, the base has surface areas respectively on both sides of the shaft which are equal but different in shape, and the perforations on both sides of the shaft are equal in area but different in shape, said base has an outer edge on each side of said shaft formed with tongues, respectively, which are the same in area and are distributed differently on both sides of the shaft, and said base being formed with weakened portions which facilitate removing said tongues so as to reduce the area of the base while simultaneously retaining the perfect balance with respect to said shaft.
Claim 10
Dependent Claim
18 words
The implant according to claim 5 or 6, wherein said weakened portions define grooves formed in said base.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-08-16 | 1986-02-15 | 1986-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-16 | 1990-02-15 | 1990-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-16 | 1994-02-15 | 1994-08-17 | $7700.00 | Window Closed / Lapsed |