Patent US4854304A successfully refreshed from Google Patents.
US4854304A
Expired / Lapsed
US
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Implant for the operative correction of spinal deformity
Assignee: Oscobal AG
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Filing: 1988-03-15
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Granted: 1989-08-08
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Expires: 2008-03-15
Abstract
Abstract An implant for the operative correction of spinal deformity, in particular scoliosis, kyphosis, and lordosis, which is a distraction and compression rod, having at one of its end a ratchet part formed by circumferential saw notches conically broadening toward the top and ending in a flat surface for receiving spinal hooks, a cylindrical part followed by a threaded part, the threaded part being build for receiving the heads of bone screws fixed by nuts, wherein the ratchet part of the rod is used for distraction and the threaded part of the rod is used for compression as well as distraction of the deformed spine.
Inventors
- 👤 Klaus Zielke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:18
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/70; A61B17/7001; A61B17/7002; A61B17/7004; A61B17/7008; A61B17/7005
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
102 words
An implant for the operative correction of spinal deformity, in particular scoliosis, kyphosis, and lordosis, comprising a rod, said rod having at one of its end a ratchet part formed by circumferential saw notches conically broadening toward the top and ending in a flat surface for receiving spinal hooks, a cylindrical part followed by a threaded part, said threaded part being built for receiving the heads of bone screws fixed by nuts, wherein said ratchet part of the rod is used for distraction and said threaded part of the rod is used for compression as well as distraction of the deformed spine.
Claim 2
Dependent Claim
102 words
An implant for the operative correction of spinal deformity, in particular scoliosis, kyphosis, and lordosis, comprising a rod, said rod having at one of its end a ratchet part formed by circumferential saw notches conically broadening toward the top and ending in a flat surface for receiving spinal hooks, a cylindrical part followed by a threaded part, said threaded part being built for receiving the heads of bone screws fixed by nuts, wherein said ratchet part of the rod is used for distraction and said threaded part of the rod is used for compression as well as distraction of the deformed spine.
Claim 3
Dependent Claim
21 words
An implant according to claim 1, wherein said rod has a collar arranged between said cylindrical part and said threaded part.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-08-07 | 1993-02-06 | 1993-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-07 | 1997-02-06 | 1997-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-07 | 2001-02-06 | 2001-08-08 | $7700.00 | Window Closed / Lapsed |