US6214006B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for bracing vertebrae
Assignee: Stryker Trauma GmbH
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Filing: 1999-12-07
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Granted: 2001-04-10
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Expires: 2019-12-07
Abstract
Abstract An apparatus for bracing a plurality of vertebrae of the human spine has at least two pedicle screws, each having an annular head with an opening therewithin and including a slot therewithin. Each slot extends into the corresponding opening and includes internal threaded portions. A securing screw to be screwed in each slot is provided. A relatively stiff threaded rod is also provided and is to be inserted into the opening in the head of each of the pedicle screws and to be secured by the securing screws. Adjusting nuts are screwed on the rod and at least one cooperates with each head.
Inventors
- 👤 Peter Metz-Stavenhagen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:42
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/70; A61B17/7001; A61B17/7035; A61B17/7037; A61B17/7002; A61B17/7004; A61B17/7008; A61B17/7032; A61B17/7038
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
166 words
An apparatus for bracing a plurality of vertebrae of the human spine, comprising: at least two pedicle screws having a shaft and a head including a slot which extends into the head and includes internal thread portions, a securing screw to be screwed in said slot on said thread portions, a threaded rod to be inserted into the slot in the head of the pedicle screws and secured by said securing screws, and adjusting nuts screwed on said rod and cooperating with said head wherein the head of the pedicle screw has a pair of faces in the area of said slot defining a width therebetween smaller than a diameter of the securing screw so that a portion of the screw extends beyond the head faces and wherein the adjusting nut has a recess provided on the face thereof adjacent the head face for cooperating with said securing screw portion to prevent the rotation of the nut after the securing screw is threaded into said slot.
Claim 2
Independent Claim
166 words
An apparatus for bracing a plurality of vertebrae of the human spine, comprising: at least two pedicle screws having a shaft and a head including a slot which extends into the head and includes internal thread portions, a securing screw to be screwed in said slot on said thread portions, a threaded rod to be inserted into the slot in the head of the pedicle screws and secured by said securing screws, and adjusting nuts screwed on said rod and cooperating with said head wherein the head of the pedicle screw has a pair of faces in the area of said slot defining a width therebetween smaller than a diameter of the securing screw so that a portion of the screw extends beyond the head faces and wherein the adjusting nut has a recess provided on the face thereof adjacent the head face for cooperating with said securing screw portion to prevent the rotation of the nut after the securing screw is threaded into said slot.
Claim 3
Dependent Claim
19 words
The apparatus of claim 1 , wherein the threaded rod has a diameter of between 6 to 9 mm.
Claim 4
Dependent Claim
32 words
The apparatus of claim 1 , wherein a laterally extending mounting latch may be attached to the shaft of the pedicel screw which latch has an opening to receive a spongiose screw.
Claim 5
Dependent Claim
32 words
The apparatus of claim 1 , wherein a laterally extending mounting strap is attached to the shaft of the pedicel screw which strap has a blade to be mounted in the vertebra.
Claim 6
Dependent Claim
21 words
The apparatus of claim 4 , therein the blade is integrally formed on the strap preferably at the free end thereof.
Claim 7
Dependent Claim
19 words
The apparatus of claim 1 , wherein the head of the pedicle screw is rotatably mounted on the shaft.
Claim 8
Dependent Claim
45 words
The apparatus of claim 6 , wherein an upper end of the shaft of the pedicle screw is shaped as a ball and wherein the head of the pedicle screw is formed by a cage receiving said ball including the slot for the threaded rod.
Claim 9
Dependent Claim
42 words
The apparatus of claim 7 , wherein a lamina hook is provided comprising a slotted receiving portion for the threaded rod and comprising threaded portions in the receiving slot portion to receive a securing screw fixing the threaded rod in the slot.
Claim 10
Dependent Claim
146 words
A pedicle screw assembly comprising: a pedicle screw having a shaft and a head with a U-shaped opening therethrough with an internal thread extending along said U-shaped opening towards said shaft; a threaded rod for insertion into and between the U-shaped opening of the pedicle screw; a securing screw threaded into said U-shaped opening on said internal thread for moving said rod toward said shaft, said screw having a diameter greater than a thickness of said head so as to have a portion extending outwardly of said head; and at least one nut disposed about the rod and making contact with said pedicle screw head, said nut including at least one indentation about a face thereof facing said head for engaging said outwardly extending portion of said securing screw upon the insertion of the screw into said U-shaped opening to prevent the rotation of said nut.
Claim 11
Dependent Claim
146 words
A pedicle screw assembly comprising: a pedicle screw having a shaft and a head with a U-shaped opening therethrough with an internal thread extending along said U-shaped opening towards said shaft; a threaded rod for insertion into and between the U-shaped opening of the pedicle screw; a securing screw threaded into said U-shaped opening on said internal thread for moving said rod toward said shaft, said screw having a diameter greater than a thickness of said head so as to have a portion extending outwardly of said head; and at least one nut disposed about the rod and making contact with said pedicle screw head, said nut including at least one indentation about a face thereof facing said head for engaging said outwardly extending portion of said securing screw upon the insertion of the screw into said U-shaped opening to prevent the rotation of said nut.
Claim 12
Dependent Claim
18 words
The apparatus of claim 9 wherein the head of the pedicle screw is rotatably mounted on the shaft.
Claim 13
Dependent Claim
44 words
The apparatus of claim 9 wherein an upper end of the shaft of the pedicle screw is shaped as a ball and wherein the head of the pedicle screw is formed by a cage receiving said ball including the slot for the threaded rod.
References Cited (Backward Citations)
US4047524A
Cited
US4383438A
Cited
US4854304A
Cited
US5042982A
Cited
US5129388A
Cited
US4987892A
Cited
US5067955A
Cited
US5207678A
Cited
WO1991001691A1
Cited
US5176680A
Cited
EP0443892B1
Cited
WO1992003100A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-04-09 | 2004-10-09 | 2005-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-04-09 | 2008-10-09 | 2009-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-04-09 | 2012-10-09 | 2013-04-10 | $7700.00 | Window Closed / Lapsed |