US5385565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tool and method for derotating scoliotic spine
Assignee: SDGI Holdings Inc
•
Filing: 1993-11-03
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Granted: 1995-01-31
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Expires: 2013-11-03
Abstract
Abstract A tool and method for derotating a scoliotic spine while it is being manipulated from a scoliotic configuration to a kyphotic configuration. The tool is used to apply a derotating force to the convex side of the scoliotic spine. The method uses the tool to reduce the derotation of a scoliotic spine.
Inventors
- 👤 R. Charles Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:29
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/70; A61B17/7001; A61B17/02; A61B17/025; A61B17/7074; A61B17/7076; A61B17/7077; A61B17/7079; A61B2017/0256
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
85 words
A method for reducing rotational deformity of a scoliotic spine having a convex side and a concave side, the method comprising the steps: connecting a derotation rod to the scoliotic spine using multiple hooks, the derotation rod having a scoliotic configuration and a kyphotic configuration; rotating the derotation rod from its scoliotic configuration to its kyphotic configuration; and reducing the rotational deformity of the scoliotic spine by applying force to the convex side of the scoliotic spine in an anterior direction during the rotating step.
Claim 2
Independent Claim
85 words
A method for reducing rotational deformity of a scoliotic spine having a convex side and a concave side, the method comprising the steps: connecting a derotation rod to the scoliotic spine using multiple hooks, the derotation rod having a scoliotic configuration and a kyphotic configuration; rotating the derotation rod from its scoliotic configuration to its kyphotic configuration; and reducing the rotational deformity of the scoliotic spine by applying force to the convex side of the scoliotic spine in an anterior direction during the rotating step.
Claim 3
Dependent Claim
38 words
The method of claim 1, further comprising, after the connecting step, securing a tool to the derotation rod for applying a force to the convex side of the scoliotic spine in an anterior direction during the rotating step.
Claim 4
Dependent Claim
27 words
The method of claim 2, wherein the reducing step further comprises displacing the convex side of the scoliotic spine in an anterior direction during the rotating step.
Claim 5
Dependent Claim
26 words
The method of claim 3, wherein during the rotating step the tool is manually biased in a direction opposite the direction the derotation rod is rotated.
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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) | 1998-01-30 | 1998-08-01 | 1999-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-01-30 | 2002-08-01 | 2003-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-01-30 | 2006-08-01 | 2007-01-31 | $7700.00 | Window Closed / Lapsed |