US3729825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oral implant
Assignee: ORATRONICS Inc
•
Filing: 1971-08-02
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Granted: 1973-05-01
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Expires: 1991-08-02
Abstract
Abstract An oral implant of the vented blade type is disclosed with a series of major improvements. The implant generally comprises a relatively thin vented blade portion adapted to be driven into a groove in the patient''s jawbone, a crown supporting head and a neck portion connecting the crown supporting head to the blade portion. The head is formed in the shape of a truncated pyramid and is provided at its underside with inclined beveled surfaces adapted to securely seat on chamfered surfaces at the mouth of the groove in the ridge crest of the patient''s jawbone thereby to provide an automatic limitation on depth of insertion and tremendous increased lateral stability. The head portion is also provided with a plurality of accurately spaced score lines for facilitating measurement of depth of insertion. The blade portion may take on a variety of contours designed to conform to various anatomical structures encountered and is preferably provided with a series of bone engaging teeth extending parallel to the sharp blade edge. Various blade contours and tooth profiles are disclosed including a preferred staggered tooth arrangement.
Inventors
- 👤 L Linkow
- 👤 C Weiss
- 👤 L Weiss
- 👤 A Liwerant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:02
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/0018; A61C8/0019
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
152 words
In an oral implant for permanently implanting an artificial tooth supporting structure in the jawbone of a patient''s mouth, comprising a relatively thin blade portion having a sharp edge adapted to be inserted into a shallow longitudinal groove along the ridge crest of a patient''s jawbone and thence driven directly into the jawbone to a suitable depth, and a comparatively massive support portion substantially wider than said blade portion, operatively connected thereto and adapted to extend therefrom outwardly of said jawbone for mounting said artificial tooth structure, the improvement comprising a shoulder surface on the underside of said support portion nearest said blade portion, said shoulder surface being inclined to said blade and being adapted to seat on a correspondingly inclined chamfered surface at the mouth of said groove, whereby engagement of said inclined shoulder surface with said chamfered bone surface provides an automatic limitation on insertion depth and increased lateral stability.
Claim 2
Dependent Claim
152 words
In an oral implant for permanently implanting an artificial tooth supporting structure in the jawbone of a patient''s mouth, comprising a relatively thin blade portion having a sharp edge adapted to be inserted into a shallow longitudinal groove along the ridge crest of a patient''s jawbone and thence driven directly into the jawbone to a suitable depth, and a comparatively massive support portion substantially wider than said blade portion, operatively connected thereto and adapted to extend therefrom outwardly of said jawbone for mounting said artificial tooth structure, the improvement comprising a shoulder surface on the underside of said support portion nearest said blade portion, said shoulder surface being inclined to said blade and being adapted to seat on a correspondingly inclined chamfered surface at the mouth of said groove, whereby engagement of said inclined shoulder surface with said chamfered bone surface provides an automatic limitation on insertion depth and increased lateral stability.
Claim 3
Dependent Claim
39 words
The implant of claim 1, wherein two such inclined shoulder surfaces are provided on the underside of said support portion, said shoulder surfaces being adapted to seat on opposing chamfers at the mouth of said groove in said bone.
Claim 4
Dependent Claim
24 words
The implant of claim 2, wherein said support portion, adapted to extend outwardly of said bone, comprises a plurality of angularly inclined planar surfaces.
Claim 5
Dependent Claim
18 words
The implant of claim 3, wherein said support portion is tapered in a direction outwardly of said bone.
Claim 6
Dependent Claim
24 words
The implant of claim 4, wherein said support portion adapted to extend outwardly of said bone is in the form of a truncated pyramid.
Claim 7
Dependent Claim
24 words
The implant of claim 1, wherein said support portion, adapted to extend outwardly of said bone, comprises a plurality of angularly inclined planar surfaces.
Claim 8
Dependent Claim
18 words
The implant of claim 6, wherein said support portion is tapered in a direction outwardly of said bone.
Claim 9
Dependent Claim
24 words
The implant of claim 7, wherein said support portion adapted to extend outwardly of said bone is in the form of a truncated pyramid.
Claim 10
Dependent Claim
35 words
The implant of claim 1, further comprising a neck portion operatively connecting said blade portion to said support portion, said inclined shoulder surface being inclined to said neck portion and extending upwardly and outwardly therefrom.
Claim 11
Dependent Claim
39 words
The implant of claim 9, wherein two such inclined shoulder surfaces are provided on the underside of said support portion, said shoulder surfaces being adapTed to seat on opposing chamfers at the mouth of said groove in said bone.
Claim 12
Dependent Claim
24 words
The implant of claim 10, wherein said support portion, adapted to extend outwardly of said bone, comprises a plurality of angularly inclined planar surfaces.
Claim 13
Dependent Claim
18 words
The implant of claim 11, wherein said support portion is tapered in a direction outwardly of said bone.
Claim 14
Dependent Claim
24 words
The implant of claim 12, wherein said support portion adapted to extend outwardly of said bone is in the form of a truncated pyramid.
Claim 15
Dependent Claim
33 words
The implant of claim 1, wherein said blade portion is provided with a plurality of bone engaging teeth extending longitudinally therealong generally parallel to said sharp edge on opposite sides of said blade.
Claim 16
Dependent Claim
19 words
The implant of claim 14, wherein said teeth on said opposite sides of said blade are in staggered relationship.
Claim 17
Dependent Claim
39 words
The implant of claim 15, wherein two such inclined shoulder surfaces are provided on the underside of said support portion, said shoulder surfaces being adapted to seat on opposing chamfers at the mouth of said groove in said bone.
Claim 18
Dependent Claim
24 words
The implant of claim 16, wherein said support portion, adapted to extend outwardly of said bone, comprises a plurality of angularly inclined planar surfaces.
Claim 19
Dependent Claim
18 words
The implant of claim 17, wherein said support portion is tapered in a direction outwardly of said bone.
Claim 20
Dependent Claim
24 words
The implant of claim 18, wherein said support portion adapted to extend outwardly of said bone is in the form of a truncated pyramid.
Claim 21
Dependent Claim
52 words
The implant of claim 1, wherein said head portion is provided with a plurality of score lines extending generally in a direction transverse to the direction of insertion of said blade, said score lines being equally spaced along the surface of said support portion to facilitate accurate measurement of depth of insertion.
Claim 22
Dependent Claim
163 words
In an oral implant for permanently implanting an artificial tooth supporting structure in the jawbone of a patient''s mouth, comprising a relatively thin blade portion having a sharp edge adapted to be inserted into a shallow longitudinal groove along the ridge crest of a patient''s jawbone and thence driven directly into the jawbone to a suitable depth, said blade portion having one or more vent openings therein for the regeneration of bone therethrough, and a comparatively massive support portion substantially wider than said blade portion, operatively connected thereto and adapted to extend therefrom outwardly of said jawbone for mounting said artificial tooth structure, the improvement comprising a plurality of bone engaging teeth on opposite sides of said blade portion extending longitudinally therealong generally parallel to said sharp edge, said sharp edge and said bone engaging teeth extending generally parallel to the ridge crest. 22 The implant of claim 21, wherein said teeth on said opposite sides of said blade are in staggered relationship.
Claim 23
Dependent Claim
15 words
The implant of claim 21, wherein said sharp edge on said blade portion is curved.
References Cited (Backward Citations)
US2449522A
Cited
US2721387A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |