US5649926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spinal segmental reduction derotational fixation system
Assignee: Advanced Spine Fixation Systems Inc
•
Filing: 1995-06-06
•
Granted: 1997-07-22
•
Expires: 2015-06-06
Abstract
Abstract The present invention relates to a spinal fixation system. The system comprises a screw for pivotally attaching a bolt to a vertebrae to be treated. A pivot block is threaded onto the bolt to move the pivot block up and down the bolt. A rod is secured at each of its ends to vertebrae on either side of the vertebrae to be treated and a clamp block is attached to the rod and the pivot block to thereby allow the pivot block to push, pull or rotate the vertebrae to be treated.
Inventors
- 👤 Robert S. Howland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:56
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/88; A61B17/8863; A61B17/68; A61B17/70; A61B17/7001; A61B17/7041; A61B17/7002; A61B17/701; A61B17/7055; A61B17/8875
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
79 words
A method for pushing, pulling or rotating a misaligned vertebra to thereby move the vertebra into correct alignment with the spine comprising: attaching a screw to the vertebra to be treated; attaching a bolt to the screw, wherein the bolt rotates in an arc on the screw; attaching each end of a rod to vertebrae on either side of the vertebra to be treated; attaching the bolt to an adjusting spindle; and attaching the adjusting spindle to the rod.
Claim 2
Independent Claim
79 words
A method for pushing, pulling or rotating a misaligned vertebra to thereby move the vertebra into correct alignment with the spine comprising: attaching a screw to the vertebra to be treated; attaching a bolt to the screw, wherein the bolt rotates in an arc on the screw; attaching each end of a rod to vertebrae on either side of the vertebra to be treated; attaching the bolt to an adjusting spindle; and attaching the adjusting spindle to the rod.
Claim 3
Dependent Claim
30 words
A method as recited in claim 1 wherein the rod is attached to vertebrae on either side of the vertebra to be treated by clamps attached to vertebrae anchor screws.
Claim 4
Dependent Claim
43 words
A method as recited in claim 1 wherein the adjusting spindle is pivotally attached to the rod by the steps comprising: attaching a clamp to the rod; attaching a pivot block to the clamp; and attaching the pivot block to the adjusting spindle.
Claim 5
Independent Claim
148 words
A method for pushing, pulling or rotating a misaligned vertebra to thereby move the vertebra into correct alignment with the spine comprising: attaching a screw to the vertebra to be treated; attaching a bolt to the screw, wherein the bolt rotates in an arc on the screw; attaching each end of a rod to vertebrae on either side of the vertebra to be treated; and attaching the bolt to the rod so that the bolt is movable relative to the rod to thereby elevate, lower or rotate the vertebra attached to the bolt relative to the rod wherein the bolt is made movable relative to the rod by the steps comprising: inserting an adjusting spindle into a pivot block so that the adjusting spindle rotates independently of the pivot block; threading the adjusting spindle and pivot block onto the bolt; and attaching the pivot block to the rod.
Claim 6
Independent Claim
148 words
A method for pushing, pulling or rotating a misaligned vertebra to thereby move the vertebra into correct alignment with the spine comprising: attaching a screw to the vertebra to be treated; attaching a bolt to the screw, wherein the bolt rotates in an arc on the screw; attaching each end of a rod to vertebrae on either side of the vertebra to be treated; and attaching the bolt to the rod so that the bolt is movable relative to the rod to thereby elevate, lower or rotate the vertebra attached to the bolt relative to the rod wherein the bolt is made movable relative to the rod by the steps comprising: inserting an adjusting spindle into a pivot block so that the adjusting spindle rotates independently of the pivot block; threading the adjusting spindle and pivot block onto the bolt; and attaching the pivot block to the rod.
References Cited (Backward Citations)
US2696817A
Cited
US5047029A
Cited
US5129900A
Cited
US5129900B1
Cited
US5053034A
Cited
US5034011A
Cited
US5254118A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-07-21 | 2001-01-20 | 2001-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-07-21 | 2005-01-20 | 2005-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-07-21 | 2009-01-20 | 2009-07-22 | $7700.00 | Window Closed / Lapsed |