EP0288702A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Improved submergible screw-type dental implant and method of utilization
Assignee: Vent-Plant Corp Inc
•
Filing: 1988-03-11
•
Granted: —
•
Expires: 2008-03-11
Abstract
Abstract A submergible screw-type implant (10) includes a longitudinal channel (18) which directs bone chips towards the base of a bore in the patient's bone in which the implant is installed. These bone chips promote autogenous rapid regrowth of new bone to securely anchor the implant in place. In order to be able to position the implant at the most advantageous angle at the edentulous sight, angled abutments (20) for supporting an artificial tooth structure (30) or angularly adjustable abutments are provided. The angularly adjustable abutments may be in the form of a ball and socket joint in which the socket includes an inner casing (64) having a peripheral extension that acts to lock the joint at the desired angle. Also, the support for an artificial tooth may include a shock-absorbing cushion (76) to prevent some of the forces of mastication from disturbing the implant.
Inventors
- 👤 Leonard I. Linkow
- 👤 Anthony W. Rinaldi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 18:46
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/0018; A61C8/0022; A61C8/0048; A61C8/005; A61C8/0053; A61C8/0059; A61C8/0074; A61C8/008; A61C8/0086; A61C8/006
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
199 words
An oral implant for supporting an artificial tooth structure comprising: an implant portion adapted to be fitted in an opening in a bone of a patient in the vicinity of the occlusal plane, which bone has been exposed by an incision in the covering fibromucosal tissue; and an abutment for supporting an artificial tooth structure, said abutment including ball and socket joint means for connecting said implant portion to said artificial tooth structure at selected angular positions with respect to each other, said ball and socket joint means including a generally spherical ball, a socket casing surrounding a portion of the ball sufficient to retain the ball in the socket casing, and locking means for locking the implant portion and abutment at the selected angular position, the socket casing including an inner casing with a generally hemispherical surface for engaging one hemisphere of the ball and an outer casing which is threaded to the inner casing and engages portions of the other hemisphere of the ball, an extension being provided on the inner casing at the periphery of its hemispherical surface, said extension being wedged between the ball and outer casing so as to act as a locking means.
Claim 2
Dependent Claim
199 words
An oral implant for supporting an artificial tooth structure comprising: an implant portion adapted to be fitted in an opening in a bone of a patient in the vicinity of the occlusal plane, which bone has been exposed by an incision in the covering fibromucosal tissue; and an abutment for supporting an artificial tooth structure, said abutment including ball and socket joint means for connecting said implant portion to said artificial tooth structure at selected angular positions with respect to each other, said ball and socket joint means including a generally spherical ball, a socket casing surrounding a portion of the ball sufficient to retain the ball in the socket casing, and locking means for locking the implant portion and abutment at the selected angular position, the socket casing including an inner casing with a generally hemispherical surface for engaging one hemisphere of the ball and an outer casing which is threaded to the inner casing and engages portions of the other hemisphere of the ball, an extension being provided on the inner casing at the periphery of its hemispherical surface, said extension being wedged between the ball and outer casing so as to act as a locking means.
Claim 3
Dependent Claim
52 words
An oral implant as claimed in claim 1 wherein the diameter of the extension is smaller than the distance across the ball at the end of the extension such that the outer part of the extension flares outwardly during threading of the inner and outer casings, and prevents unthreading of these casings.
Claim 4
Dependent Claim
40 words
An oral implant as claimed in claim 1 wherein said inner casing is in two parts, one part of said inner casing containing the hemispherical surface and the other part being in the form of a ring forming said extension.
Claim 5
Dependent Claim
215 words
An oral implant having an implant portion adapted to be fitted in an opening in a bone of a patient in the vicinity of the occlusal plane and on a support for an artificial tooth structure attached to the implant portion, characterized in that the support comprises: a member on which an artificial tooth may be mounted, said member having a bore extending completely through it, one end of the bore opening into a recess which is in the shape of half an oval; a collar having a central opening aligned with the bore of the member, one end of the opening being expanded into a recess which is in the shape of half an oval in cross section, the collar being positioned relative to the member such that the recesses are adjacent each other and form an oval cavity; a flexible elastic washer having a hole through the middle and aligned with the opening when seated in the cavity, said washer keeping said member and collar resiliently separated from each other; and a screw having a head secured in said member and a shaft extending through the bore of the member, the hole of the washer and the central opening of the collar being urged into threaded engagement with the rest of the implant.
Claim 6
Dependent Claim
215 words
An oral implant having an implant portion adapted to be fitted in an opening in a bone of a patient in the vicinity of the occlusal plane and on a support for an artificial tooth structure attached to the implant portion, characterized in that the support comprises: a member on which an artificial tooth may be mounted, said member having a bore extending completely through it, one end of the bore opening into a recess which is in the shape of half an oval; a collar having a central opening aligned with the bore of the member, one end of the opening being expanded into a recess which is in the shape of half an oval in cross section, the collar being positioned relative to the member such that the recesses are adjacent each other and form an oval cavity; a flexible elastic washer having a hole through the middle and aligned with the opening when seated in the cavity, said washer keeping said member and collar resiliently separated from each other; and a screw having a head secured in said member and a shaft extending through the bore of the member, the hole of the washer and the central opening of the collar being urged into threaded engagement with the rest of the implant.
Claim 7
Dependent Claim
31 words
An oral implant as claimed in claim 4 wherein the screw has a flared portion which engages and wedges in the collar portion so as to inhibit unthreading of the screw.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.