Patent US3579831A successfully refreshed from Google Patents.
US3579831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bone implant
Assignee: Individual
•
Filing: 1969-03-05
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Granted: 1971-05-25
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Expires: 1989-03-05
Abstract
Abstract A bone implant such as a dental implant to be received in a jaw bone. The bone implant includes a screw which has a pair of opposed end regions, one of which is threaded for the purpose of screwing into bone and the other of which is provided with a means for fastening any other desired structure to the screw. For example, in the case of a dental implant this fastening means can be used to fasten a crown to the screw. In addition to the screw the bone implant of the invention includes at least one stabilizing pin operatively connected with the screw to stabilize the latter in the bone, so that as a result of the stabilizing, the screw will be reliably retained in the bone.
Inventors
- 👤 Irving J Stevens
- 👤 Jerry Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:28
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/0018; A61C8/0022; A61C8/0003; A61C8/0009
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
145 words
A bone implant comprising elongated screw means to be fitted into a bone, said screw means having an elongated shank provided with a pair of opposed end regions one of which is threaded and the other of which carries a fastening means for fastening a structure to said screw means, said shank being formed between said opposed end regions with at least one elongated bore inclined to the axis of said shank and passing therethrough, and stabilizing means operatively connected with said screw means for stabilizing the latter in a bone, said stabilizing means including at least one stabilizing pin removably assembled with said screw means, extending through and beyond said bore of said shank, and having a portion accessible at said other end region of said screw means to facilitate removal of said stabilizing means and removal of said s crew means, if necessary.
Claim 2
Dependent Claim
145 words
A bone implant comprising elongated screw means to be fitted into a bone, said screw means having an elongated shank provided with a pair of opposed end regions one of which is threaded and the other of which carries a fastening means for fastening a structure to said screw means, said shank being formed between said opposed end regions with at least one elongated bore inclined to the axis of said shank and passing therethrough, and stabilizing means operatively connected with said screw means for stabilizing the latter in a bone, said stabilizing means including at least one stabilizing pin removably assembled with said screw means, extending through and beyond said bore of said shank, and having a portion accessible at said other end region of said screw means to facilitate removal of said stabilizing means and removal of said s crew means, if necessary.
Claim 3
Dependent Claim
35 words
The combination of claim 1 and wherein said pin has an outer end which is accessible at said other end region of said screw means to facilitate removal of said pin from said screw means.
Claim 4
Dependent Claim
23 words
The combination of claim 2 and wherein said screw means and stabilizing pin have a nonparallel nonperpendicular relationship with respect to each other.
Claim 5
Dependent Claim
19 words
The combination of claim 1 and wherein said threaded end region of said screw means has a self-tapping thread.
Claim 6
Dependent Claim
60 words
The combination of claim 4 and wherein said screw means is made of a springy material, termiNates at said threaded end region in a tapered tip, and is formed at said threaded end region with an axially extending slot having an open end at said tip and providing said screw means with springy threaded portions which enhance the self-tapping operations.
Claim 7
Dependent Claim
54 words
The combination of claim 1 and wherein the implant is a dental implant and said screw means is adapted to extend in a jaw bone and said shank being formed between said end regions at its exterior with an annular groove to be situated at the crest of the cortical bone for minimizing stress.
Claim 8
Dependent Claim
67 words
The combination of claim 1 and wherein said shank is formed between said end regions thereof with a pair of said bores which are oppositely inclined and said stabilizing means including a pair of oppositely inclined stabilizing pins connected with said screw means for stabilizing the latter in a bone, said stabilizing pins respectively having outer ends accessible at said other end region of said screw means.
Claim 9
Dependent Claim
34 words
The combination of claim 7 and wherein the inclinations of said bores are preselected for situating said screw means and pins at regions of a bone capable of accommodating said screw means and pins.
Claim 10
Dependent Claim
54 words
The combination of claim 8 and wherein said bores respectively have outer pin-receiving ends situated at said other end region of said screw means where said fastening means is located and said bores respectively terminating in inner ends situated at an exterior side surface of said screw means between said opposed end regions thereof.
References Cited (Backward Citations)
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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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |