Patent US3851393A successfully refreshed from Google Patents.
US3851393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oral implant
Assignee: ORATRAONICS Inc
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Filing: 1973-09-28
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Granted: 1974-12-03
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Expires: 1993-09-28
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 adapted to be seated into the groove of the patient''s jawbone, a crown supporting head, and a neck integrally connecting the head to the blade. In one embodiment suitable for use in the frontal segment of a patient''s jawbone, the blade has a curvature corresponding to the average curvature of a frontal jawbone segment and is inclined relative to the head so that the head remains relatively vertical while the blade follows the jutting angle of the frontal jawbone segment. In another embodiment, the neck connecting the blade and the head has a length not less than the gingival thickness so that the blade may be inserted into the jawbone with the head being maintained spaced from the gumline. In still another embodiment, the blade has a horizontally symmetrical main portion and a horizontally extending tab portion to fully utilize the available adjacent jawbone space and provide enhanced retention. In this embodiment the heads are disposed off-center and asymmetrically along the blade length to provide added options in exact head location by permitting reversal of the blade at the time of final seating.
Inventors
- 👤 C Weiss
- 👤 I Lew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:41
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/0018; A61C8/0019
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
210 words
In an oral implant for permanently implanting an artificial tooth supporting structure in the frontal jawbone segment of a patient''s mouth comprising A. a relatively thin blade portion having a relatively narrow edge adapted to be seated directly into the frontal jawbone segment to a suitable depth, and B. a comparatively massive support portion substantially wider than said blade portion operatively connected thereto and adapted to extend therefrom outwardly of the frontal jawbone segment for mounting an artificial tooth structure, the underside of said support portion nearest said blade portion having a shoulder surface adapted to seat on a corresponding surface of the frontal jawbone segment, whereby engagement of said shoulder surface with the bone surface provides an automatic limitation on insertion depth and increased lateral stability; the improvement wherein said blade portion has a horizontal convex curvature equivalent to the average curvature of the frontal jawbone segment and a horizontal length equivalent to at least two adjacent dental roots in the Frontal jawbone segment, and wherein the axes of said blade portion and said support portion form an included angle deviating from 180* to permit said support portion to be substantially vertical when said blade portion is driven into the frontal jawbone segment at an angle to the vertical.
Claim 2
Dependent Claim
210 words
In an oral implant for permanently implanting an artificial tooth supporting structure in the frontal jawbone segment of a patient''s mouth comprising A. a relatively thin blade portion having a relatively narrow edge adapted to be seated directly into the frontal jawbone segment to a suitable depth, and B. a comparatively massive support portion substantially wider than said blade portion operatively connected thereto and adapted to extend therefrom outwardly of the frontal jawbone segment for mounting an artificial tooth structure, the underside of said support portion nearest said blade portion having a shoulder surface adapted to seat on a corresponding surface of the frontal jawbone segment, whereby engagement of said shoulder surface with the bone surface provides an automatic limitation on insertion depth and increased lateral stability; the improvement wherein said blade portion has a horizontal convex curvature equivalent to the average curvature of the frontal jawbone segment and a horizontal length equivalent to at least two adjacent dental roots in the Frontal jawbone segment, and wherein the axes of said blade portion and said support portion form an included angle deviating from 180* to permit said support portion to be substantially vertical when said blade portion is driven into the frontal jawbone segment at an angle to the vertical.
Claim 3
Dependent Claim
25 words
The oral implant of claim 1 wherein said blade portion has a length equivalent to at least six dental roots in the frontal jawbone segment.
Claim 4
Dependent Claim
41 words
The oral implant of claim 1 wherein said included angle is about 110*-175*, whereby said support portion is substantially vertical when said blade portion is seated into the frontal jawbone segment parallel to the jutting angle of the frontal jawbone segment.
Claim 5
Dependent Claim
13 words
The oral implant of claim 3 wherein said included angle is about 170*.
Claim 6
Dependent Claim
22 words
The oral implant of claim 1 wherein said blade portion has a horizontal convex curvature with a radius of about 10 centimeters.
Claim 7
Dependent Claim
41 words
The oral implant of claim 1 wherein said blade portion and said support portion are operative connected by a neck portion axially aligned with said blade portion, whereby the axes of said support portion and neck portion form said included angle.
Claim 8
Dependent Claim
19 words
The oral implant of claim 6 wherein said neck portion has a height not less than the gingival thickness.
Claim 9
Dependent Claim
18 words
The oral implant of claim 6 wherein said neck portion has a height of at least 0.04 millimeters.
Claim 10
Dependent Claim
61 words
The oral implant of claim 1 wherein said blade portion is comprised of a main portion comprising the bulk thereof and a tab portion integral therewith extending horizontally from one end of said main portion, said main portion being substantially symmetrical about a vertical axis therethrough, whereby said tab portion provides improved engagement between said implant and the frontal jawbone segment.
Claim 11
Dependent Claim
31 words
The oral implant of claim 1 wherein said oral implant includes a plurality of said support portions, each of said support portions being adapted to engage a single artificial tooth structure.
Claim 12
Dependent Claim
24 words
The oral implant of claim 1 wherein said oral implant includes only a single blade portion adapted to be seated directly into the jawbone.
Claim 13
Dependent Claim
145 words
In an oral implant for permanently implanting an artificial tooth supporting structure in the jawbone of a patient''s mouth, comprising A. a relatively thin blade portion having a relatively narrow edge adapted to be seated directly into the jawbone to a suitable depth, and B. a comparatively massive support portion substantially wider than said blade portion, operatively connected thereto and adapted to extend thereform outwardly of the jawbone for mounting said artificial tooth structure; the improvement wherein said blade portion has a main portion comprising the bulk thereof and at least one tab portion integral therewith extending horizontally from one end thereof, said main portion being substantially symmetrical about a vertical axis therethrough, whereby said tab portion is adapted to utilize additional available adjacent jawbone to provide improved engagement between said implant and the jawbone and hence enhance retention and lateral stability of said implant.
Claim 14
Dependent Claim
145 words
In an oral implant for permanently implanting an artificial tooth supporting structure in the jawbone of a patient''s mouth, comprising A. a relatively thin blade portion having a relatively narrow edge adapted to be seated directly into the jawbone to a suitable depth, and B. a comparatively massive support portion substantially wider than said blade portion, operatively connected thereto and adapted to extend thereform outwardly of the jawbone for mounting said artificial tooth structure; the improvement wherein said blade portion has a main portion comprising the bulk thereof and at least one tab portion integral therewith extending horizontally from one end thereof, said main portion being substantially symmetrical about a vertical axis therethrough, whereby said tab portion is adapted to utilize additional available adjacent jawbone to provide improved engagement between said implant and the jawbone and hence enhance retention and lateral stability of said implant.
Claim 15
Dependent Claim
16 words
The oral implant of claim 12 wherein said support portion is off-center of said blade portion.
Claim 16
Dependent Claim
24 words
The oral implant of claim 12 wherein said implant has a plurality of support portions asymmetrically disposed along the length of said blade portion.
Claim 17
Dependent Claim
31 words
The oral implant of claim 12 wherein said oral implant includes a plurality of said support portions, each of said support portions being adapted to engage a single artificial tooth structure.
Claim 18
Dependent Claim
24 words
The oral implant of claim 12 wherein said oral implant includes only a single blade portion adapted to be seated directly into the jawbone.
Claim 19
Dependent Claim
173 words
In an oral implant for permanently implanting an artificial tooth supporting structure in the frontal jawbone segment of a patient''s mouth comprising A. a relatively thin blade portion having a relatively narrow edge adapted to be seated directly into the frontal jawbone segment to a suitable depth, and B. a comparatively massive support portion substantially wider than said blade portion operatively connected thereto and adapted to extend therefrom outwardly of the frontal jawbone segment for mounting an artificial tooth structure, the underside of said support portion nearest said blade portion having a shoulder surface adapted to seat on a corresponding surface of the frontal jawbone segment, whereby engagement of said shoulder surface with the bone surface provides an automatic limitation on insertion depth and increased lateral stability; the improvement wherein the axes of said blade portion and said support portion form an included angle deviating from 180* to permit said support portion to be substantially vertical when said blade portion is driven into the frontal jawbone segment at an angle to the vertical.
Claim 20
Dependent Claim
173 words
In an oral implant for permanently implanting an artificial tooth supporting structure in the frontal jawbone segment of a patient''s mouth comprising A. a relatively thin blade portion having a relatively narrow edge adapted to be seated directly into the frontal jawbone segment to a suitable depth, and B. a comparatively massive support portion substantially wider than said blade portion operatively connected thereto and adapted to extend therefrom outwardly of the frontal jawbone segment for mounting an artificial tooth structure, the underside of said support portion nearest said blade portion having a shoulder surface adapted to seat on a corresponding surface of the frontal jawbone segment, whereby engagement of said shoulder surface with the bone surface provides an automatic limitation on insertion depth and increased lateral stability; the improvement wherein the axes of said blade portion and said support portion form an included angle deviating from 180* to permit said support portion to be substantially vertical when said blade portion is driven into the frontal jawbone segment at an angle to the vertical.
Claim 21
Dependent Claim
41 words
The oral implant of claim 17 wherein said included angle is about 110*-175*, whereby said support portion is substantially vertical when said blade portion is seated into the frontal jawbone segment parallel to the jutting angle of the frontal jawbone segment.
Claim 22
Dependent Claim
13 words
The oral implant of claim 18 wherein said included angle is about 170*.
Claim 23
Dependent Claim
41 words
The oral implant of claim 17 wherein said blade portion and said support portion are operative connected by a neck portion axially aligned with said blade portion, whereby the axes of said support portion and neck portion form said included angle.
References Cited (Backward Citations)
US3641671A
Cited
US3729825A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |