Patent US4289123A successfully refreshed from Google Patents.
US4289123A
Expired / Lapsed
US
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Orthopedic appliance
Assignee: Individual
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Filing: 1980-03-31
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Granted: 1981-09-15
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Expires: 2000-03-31
Abstract
Abstract The present invention in an improved orthopedic appliance is for attachment in supporting engagement to a patient's spine, during an anterior surgical procedure thereof. The installed appliance provides for decompression of the contents of the spinal canal and/or is to obtain sufficient fusion mass to provide long-term spinal stability. The appliance incorporates a pair of contoured rocker arm brackets that are each attached to a separated vertebral portions of healthy vertebra, with a damaged or diseased vertebra therebetween. Spacing adjustment and columnar support between the brackets is provided by a single spacing adjustment rod whose ends are threaded oppositely and are turned into appropriately threaded portions of the brackets. A second slide rod is preferably provided that also extends between the brackets and is arranged to slide freely therein but preferably is arranged to accommodate nuts, or the like, turned thereon against the brackets to provide columnar support thereacross.
Inventors
- 👤 Harold K. Dunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:18
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/44; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/70; A61B17/7001; A61B17/7002; A61B17/7004; A61B17/7008; A61B17/7044; A61B90/00; A61B17/7041; A61B17/84; A61B17/86; A61F2002/30001; A61F2002/30316; A61F2002/30329; A61F2002/30405; A61F2002/30411; A61F2002/30535; A61F2002/30537; A61F2002/3055; A61F2220/00; A61F2220/0025
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
129 words
An improved orthopedic appliance consisting of, a pair of brackets each contoured on one surface to closely fit to a vertebral body portion of a human vertebra, which brackets include oppositely threaded holes formed therethrough that are aligned when the brackets are properly installed to the vertebral body portions; means for securing each said bracket to a separate vertebral body portion consisting of, a U-shaped staple that includes means for securing it to a saddle portion of each said bracket such that legs of said staple extend outwardly from said bracket contoured surface, and, means, additional to said staple, for connecting each said bracket to said vertebral body portion; and a spacing adjustment rod having oppositely threaded ends arranged to turn into said oppositely threaded holes in said brackets.
Claim 2
Dependent Claim
129 words
An improved orthopedic appliance consisting of, a pair of brackets each contoured on one surface to closely fit to a vertebral body portion of a human vertebra, which brackets include oppositely threaded holes formed therethrough that are aligned when the brackets are properly installed to the vertebral body portions; means for securing each said bracket to a separate vertebral body portion consisting of, a U-shaped staple that includes means for securing it to a saddle portion of each said bracket such that legs of said staple extend outwardly from said bracket contoured surface, and, means, additional to said staple, for connecting each said bracket to said vertebral body portion; and a spacing adjustment rod having oppositely threaded ends arranged to turn into said oppositely threaded holes in said brackets.
Claim 3
Dependent Claim
34 words
An improved orthopedic appliance as recited in claim 1, wherein the means for securing the staple to the bracket saddle include, a screw fitted through a staple yoke portion and into said bracket saddle.
Claim 4
Dependent Claim
72 words
An improved orthopedic appliance as recited in claim 1, wherein the means for securing the staple to the bracket include, oppositely facing incline planes secured, respectively, to inner faces of legs of said staple and to opposite surfaces of the bracket saddle such that vertical faces of said incline planes will align and slide over one another when said staple is moved over said saddle to lock said staple to said bracket.
Claim 5
Dependent Claim
41 words
An improved orthopedic appliance as recited in claim 1, wherein the means, additional to each staple, for securing said bracket to said vertebral body portion consists of, a screw fitted through an opening through said bracket into said vertebral body portion.
Claim 6
Dependent Claim
39 words
An improved orthopedic appliance as recited in claim 1, further including, slide holes formed through said brackets that align when said brackets are installed to the vertebral body portions; and a slide rod for installation into said slide holes.
Claim 7
Dependent Claim
21 words
An improved orthopedic appliance as recited in claim 5, wherein the slide rod is threaded to accommodate lock nuts turned thereon.
Claim 8
Dependent Claim
19 words
An improved orthopedic appliance as recited in claim 1, further including, lock nuts turned on the space adjustment rod.
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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) | 1984-09-14 | 1985-03-16 | 1985-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-14 | 1989-03-16 | 1989-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-14 | 1993-03-16 | 1993-09-15 | $7700.00 | Window Closed / Lapsed |