Patent US2338057A successfully refreshed from Google Patents.
US5209666A
Expired / Lapsed
US
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Endosseous implant system wtih captured screw
Assignee: Zimmer Dental Inc
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Filing: 1991-10-02
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Granted: 1993-05-11
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Expires: 2011-10-02
Abstract
Abstract An endosseous dental implant system comprising an artificial root and a canted coronal section. Interposed between the artificial root and the canted coronal section is an intermediate post having a locking formation adjacent both the coronal section and the artificial root. A floating screw is captured inside the intermediate post and permits the intermediate post to be secured to the artificial root independently from the coronal section. The coronal section can be secured on the intermediate post with a free screw.
Inventors
- 👤 Alan R. Balfour
- 👤 Donald E. Hendricks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:18
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/0048; A61C8/0018
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
305 words
A prosthetic dental implant attachment system for mounting a prosthetic device in fixed relationship to a jaw of a patient comprising: a root member having an axis, a first end with securing means for securing the root member to the jaw, and a second end with first indexing means for mounting an intermediate member on said root member and for preventing angular rotation of said intermediate member about said axis, said intermediate member having a first mating indexing means on a first end of said intermediate member for cooperating with said first indexing means for preventing angular rotation of said intermediate member and for constraining said intermediate member to a discrete number of angular orientations with respect to said root member, and second indexing means on a second end of said intermediate member for mounting a coronal member and for preventing angular rotation of said coronal member about said axis, said coronal member having a second mating indexing means on a first end of said coronal member for cooperating with said second indexing means for preventing angular rotation of said coronal member and for constraining said coronal member to a discrete number of angular orientations with respect to said intermediate member and second securing means on a second end of said coronal member for securing the prosthetic device in fixed relationship thereto, said intermediate member further comprising an internal cavity, a bore into said cavity from said first end of said intermediate member and an access bore from said second end of said intermediate member into said cavity, a screw having a head captured rotatably within said internal cavity of said intermediate member and a threaded shank extending through said bore for engaging said root member, said screw being manipulable through said access bore, and means for attaching said coronal member to said intermediate member.
Claim 2
Dependent Claim
305 words
A prosthetic dental implant attachment system for mounting a prosthetic device in fixed relationship to a jaw of a patient comprising: a root member having an axis, a first end with securing means for securing the root member to the jaw, and a second end with first indexing means for mounting an intermediate member on said root member and for preventing angular rotation of said intermediate member about said axis, said intermediate member having a first mating indexing means on a first end of said intermediate member for cooperating with said first indexing means for preventing angular rotation of said intermediate member and for constraining said intermediate member to a discrete number of angular orientations with respect to said root member, and second indexing means on a second end of said intermediate member for mounting a coronal member and for preventing angular rotation of said coronal member about said axis, said coronal member having a second mating indexing means on a first end of said coronal member for cooperating with said second indexing means for preventing angular rotation of said coronal member and for constraining said coronal member to a discrete number of angular orientations with respect to said intermediate member and second securing means on a second end of said coronal member for securing the prosthetic device in fixed relationship thereto, said intermediate member further comprising an internal cavity, a bore into said cavity from said first end of said intermediate member and an access bore from said second end of said intermediate member into said cavity, a screw having a head captured rotatably within said internal cavity of said intermediate member and a threaded shank extending through said bore for engaging said root member, said screw being manipulable through said access bore, and means for attaching said coronal member to said intermediate member.
Claim 3
Dependent Claim
21 words
The prosthetic dental implant attachment system according to claim 1 wherein the means for attaching said coronal member comprise a screw.
Claim 4
Dependent Claim
34 words
The prosthetic dental implant attachment system according to claim 2 wherein the first indexing means comprise a recess defining a regular prism and wherein said first mating indexing means comprise a congruent regular prism.
Claim 5
Dependent Claim
34 words
The prosthetic dental implant attachment system according to claim 3 wherein the second indexing means comprise a regular prism and wherein said second mating indexing means comprise a recess defining a congruent regular prism.
Claim 6
Dependent Claim
29 words
The prosthetic dental implant attachment system according to claim 4 wherein the regular prisms of the first indexing means and the first mating indexing means are regular octagonal prisms.
Claim 7
Dependent Claim
29 words
The prosthetic dental implant attachment system according to claim 5 wherein the regular prisms of the second indexing means and the second mating indexing means are regular hexagonal prisms.
Claim 8
Dependent Claim
34 words
The prosthetic dental implant attachment system according to claim 1 wherein the first indexing means comprise a recess defining a regular prism and wherein said first mating indexing means comprise a congruent regular prism.
Claim 9
Dependent Claim
34 words
The prosthetic dental implant attachment system according to claim 7 wherein the second indexing means comprise a regular prism and wherein said second mating indexing means comprise a recess defining a congruent regular prism.
Claim 10
Dependent Claim
29 words
The prosthetic dental implant attachment system according to claim 8 wherein the regular prisms of the first indexing means and the first mating indexing means are regular octagonal prisms.
Claim 11
Dependent Claim
29 words
The prosthetic dental implant attachment system according to claim 9 wherein the regular prisms of the second indexing means and the second mating indexing means are regular hexagonal prisms.
Claim 12
Dependent Claim
210 words
A prosthetic dental implant attachment system for mounting a prosthesis in fixed relationship to a bone of a patient comprising: a root member having an axis, a first end having securing means for securing the root member to bone and a second end with first indexing means for mounting a second member on said root member and for preventing angular rotation of said second member about said axis, said second member having a first mating indexing means on a first end of said second member for cooperating with said second end of said root member for preventing angular rotation of said second member and for constraining said second member to a discrete number of angular orientations with respect to said root member, and a second end for receiving said prostheses, said second member further comprising an internal cavity, a bore into said internal cavity from said first end of said second member and an access bore from said second end of said second member into said cavity, and a screw having a head non-removably captured rotatably within said internal cavity of said of intermediate member and a threaded shank extending through said bore for engaging said root member, said captured head of said screw being manipulable through said access bore.
Claim 13
Dependent Claim
210 words
A prosthetic dental implant attachment system for mounting a prosthesis in fixed relationship to a bone of a patient comprising: a root member having an axis, a first end having securing means for securing the root member to bone and a second end with first indexing means for mounting a second member on said root member and for preventing angular rotation of said second member about said axis, said second member having a first mating indexing means on a first end of said second member for cooperating with said second end of said root member for preventing angular rotation of said second member and for constraining said second member to a discrete number of angular orientations with respect to said root member, and a second end for receiving said prostheses, said second member further comprising an internal cavity, a bore into said internal cavity from said first end of said second member and an access bore from said second end of said second member into said cavity, and a screw having a head non-removably captured rotatably within said internal cavity of said of intermediate member and a threaded shank extending through said bore for engaging said root member, said captured head of said screw being manipulable through said access bore.
Claim 14
Dependent Claim
48 words
The prosthetic implant attachment system according to claim 11 wherein said indexing means on said second end of said root member comprises a recess defining a regular prism and mating indexing means on first end of said second member, said mating indexing means comprising a congruent regular prism.
Claim 15
Dependent Claim
26 words
The prosthetic implant attachment system according to claim 12 wherein the regular prisms of the indexing means and the mating indexing means are regular octagonal prisms.
Claim 16
Dependent Claim
26 words
The prosthetic implant attachment system according to claim 12 wherein the regular prisms of the indexing means and the mating indexing means are regular hexagonal prisms.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-05-10 | 1996-11-09 | 1997-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-10 | 2000-11-09 | 2001-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-10 | 2004-11-09 | 2005-05-11 | $7700.00 | Window Closed / Lapsed |