US6146384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Orthopedic fixation device and method of implantation
Assignee: Warsaw Orthopedic Inc
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Filing: 1995-10-13
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Granted: 2000-11-14
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Expires: 2015-10-13
Abstract
Abstract and methods for attaching an implant to bone are disclosed. In one embodiment, the device 10 includes an elongated stud 15 defining an engaging surface 16 and a foot 20 projecting outwardly from an end 18 of the stud 15. The foot 20 is receivable through an opening O in the cortical layer R of the bone B and includes an upper surface 21 for contacting an internal surface R' of the cortical layer R. A fastener 25 is provided for engaging the engaging surface 16 of the stud 15, having a surface 29 for bearing against the implant I to clamp the implant I to the bone B when the fastener 25 is engaged to the engaging surface 16 of the stud 15 and the foot 20 is received in the opening O. In another embodiment, the apparatus 30 includes a number of additional studs 31 which are extendable together through the opening O. A wedge 36 can be provided to clamp the multiple studs within the bone opening.
Inventors
- 👤 Casey K. Lee
- 👤 Robert A. Farris
- 👤 Bradley I. Coates
- 👤 Michael C. Sherman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:46
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/80; A61B17/8033; A61B17/8038; A61B17/16; A61B17/1604; A61B17/84; A61B17/86; A61B17/8625; A61B17/8047
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
184 words
An orthopedic internal fixation system for maintaining bones in a desired spatial relationship, at least one of the bones having an opening formed through the cortical layer thereof, the system comprising: a bone implant configured for supporting the bones in the desired spatial relationship, said implant defining a hole therethrough; a first elongated stud defining an engaging surface and having a first portion and an opposite second portion extendable through said hole of said implant; a foot rigidly attached to said first portion of said stud and projecting outwardly therefrom, said foot being receivable through the opening in the cortical layer of the bone, said foot having an upper surface for contacting the cortical layer when said foot is received through the opening; and a fastener for engaging said engaging surface of said stud, said fastener having a bearing surface for bearing against said implant, said fastener clamping said implant between the bone and said bearing surface of said fastener when said fastener is engaged to said engaging surface of said stud and said upper surface of said foot is contacting the cortical layer.
Claim 2
Dependent Claim
184 words
An orthopedic internal fixation system for maintaining bones in a desired spatial relationship, at least one of the bones having an opening formed through the cortical layer thereof, the system comprising: a bone implant configured for supporting the bones in the desired spatial relationship, said implant defining a hole therethrough; a first elongated stud defining an engaging surface and having a first portion and an opposite second portion extendable through said hole of said implant; a foot rigidly attached to said first portion of said stud and projecting outwardly therefrom, said foot being receivable through the opening in the cortical layer of the bone, said foot having an upper surface for contacting the cortical layer when said foot is received through the opening; and a fastener for engaging said engaging surface of said stud, said fastener having a bearing surface for bearing against said implant, said fastener clamping said implant between the bone and said bearing surface of said fastener when said fastener is engaged to said engaging surface of said stud and said upper surface of said foot is contacting the cortical layer.
Claim 3
Dependent Claim
18 words
The system of claim 1, wherein said engaging surface is externally threaded and said fastener is internally threaded.
Claim 4
Dependent Claim
31 words
The system of claim 2, wherein at least a portion of said second portion defines a hexagonal outer surface disposed opposite said foot to receive a tool to rotate the stud.
Claim 5
Dependent Claim
23 words
The system of claim 1 wherein said elongated stud defines a center line and said foot is oriented transverse to said center line.
Claim 6
Dependent Claim
22 words
The system of claim 1 wherein said foot is elongated having a length that is greater than a width of said foot.
Claim 7
Dependent Claim
25 words
The system of claim 5 wherein said foot includes opposites ends and said center line intersects said foot between said opposite ends of said foot.
Claim 8
Dependent Claim
23 words
The system of claim 1 wherein said foot is integrally formed with said first portion of said stud to form a unitary piece.
References Cited (Backward Citations)
US2379752A
Cited
US2485531A
Cited
US4716893A
Cited
DE3509417A1
Cited
US4854311A
Cited
US4711234A
Cited
US4850063A
Cited
US5098433A
Cited
US5209753A
Cited
US5059193A
Cited
US5102421A
Cited
US5135528A
Cited
US5133719A
Cited
US5167665A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-11-14 | 2004-05-15 | 2004-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-11-14 | 2008-05-15 | 2008-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-11-14 | 2012-05-15 | 2012-11-14 | $7700.00 | Window Closed / Lapsed |