التفاصيل البيبلوغرافية
| العنوان: |
PLIF opposing wedge ramp |
| Document Number: |
20110144755 |
| تاريخ النشر: |
June 16, 2011 |
| Appl. No: |
12/967317 |
| Application Filed: |
December 14, 2010 |
| مستخلص: |
A spinal fusion implant for implantation between adjacent vertebrae is formed in the approximate shape of a hollow cube. The device has an upper section and a lower section separated by a distractor all of which are relatively movable. The sidewalls of the upper section and the lower section terminate in inclined planes so that the sections move away from each other as the wedge shaped increases the height of the device. The upper section and lower section each includes a clamping flange. The clamping flange on the upper section engages the vertebral body above the implant and the clamping flange on the lower section engages the vertebral body below the implant. The distractor has a pair of clamping flanges on an end wall wherein one of the pair engages the vertebral body above the implant and the other engages the vertebral body below the implant. The clamping flanges provide a clamping action between adjacent vertebral bodies to restore alignment and stabilize the vertebral segments. |
| Inventors: |
Baynham, Bret O. (Jupiter, FL, US); Baynham, G. Clay (Jupiter, FL, US); Baynham, Matthew G. (Jupiter, FL, US); Campbell, David R. (Jupiter, FL, US) |
| Claim: |
1. A spinal fusion device for placement in the disk space between adjacent vertebrae comprising a hollow body having an upper section with a top surface for contacting one vertebra and a lower section with a bottom surface for contacting the adjacent vertebra, said top surface and said bottom surface having means for engaging adjacent vertebrae, depending sidewalls extending from said top surface terminating in a first inclined plane, upstanding sidewalls projecting from said bottom surface terminating in a second inclined plane, said upper section having a first end wall, said lower section having a second end wall, said first end wall including a first slot and said second end wall including a second slot, a link having a first end slidably mounted in said first slot and a second end slidably mounted within said second slot, whereby said link is slidably mounted in said first end wall and said second end wall and said upper section and said lower section may move apart; said first end wall including a first clamping flange configured to engage a vertebral body above said device and said second end wall including a second flange configured to engage a vertebral body below said device. |
| Claim: |
2. A spinal fusion device of claim 1 wherein a distractor is slidably disposed between said depending sidewalls and said upstanding sidewalls, said depending sidewalls and said upstanding sidewalls in sliding contact with said along said first inclined plane and said second inclined plane whereby the distance between said bottom surface and said top surface is adjustable by moving said upper section relative to said lower section, said distractor including an end wall, said end wall including a third clamping flange configured to engage said vertebral body located above said device and a fourth clamping flange configured to engage said vertebral body located below said device, thereby providing a clamping action between adjacent vertebral bodies to restore alignment and stabilize the vertebral segments. |
| Claim: |
3. A spinal fusion device of claim 2 wherein said link includes a tube with internal threads, said includes a bore, a jack screw in said bore threaded into said tube whereby said moves relative to said upper section and said lower section as said jack screw is threaded into said tube. |
| Claim: |
4. A spinal fusion device of claim 2 wherein said upstanding walls have a second groove along said second inclined plane, a second clamping flange connected to said, said second clamping flange adapted to contact said portion of said second groove and provide alignment of said upper section and said lower section. |
| Claim: |
5. A spinal fusion device of claim 4 wherein said depending walls have a groove along said first inclined plane, a flange connected to said, said flange adapted to contact said portion of said groove and provide alignment of said upper section and said lower section. |
| Claim: |
6. A spinal fusion device of claim 2 wherein said depending walls have a groove along said first inclined plane, a flange connected to said, said flange adapted to contact said portion of said groove and provide alignment of said upper section and said lower section. |
| Claim: |
7. A spinal fusion device of claim 1 wherein said means for engaging a vertebra is a series of lands and grooves on said top surface. |
| Claim: |
8. A spinal fusion device of claim 7 wherein said means for engaging a vertebra is a series of lands and grooves on said bottom surface. |
| Claim: |
9. A spinal fusion device of claim 8 wherein said means for engaging a vertebra is a bracket on said bottom surface. |
| Claim: |
10. A spinal fusion device of claim 9 wherein said means for engaging a vertebra is a bracket on said top surface. |
| Claim: |
11. A spinal fusion device of claim 1 wherein said means for engaging a vertebra is a bracket on said top surface. |
| Claim: |
12. A spinal fusion device of claim 1 wherein said means for engaging a vertebra is a bracket on said bottom surface. |
| Claim: |
13. A spinal fusion device of claim 1 wherein said first clamping flange includes a sharp edged surface for engaging the vertebral body above said device and said second clamping flange includes a sharp edged surface for engaging the vertebral body located below said device. |
| Claim: |
14. A spinal fusion device of claim 2 wherein said third clamping flange includes a sharp edged surface for engaging the vertebral body above said device and said fourth clamping flange includes a sharp edged surface for engaging the vertebral body located below said device. |
| Claim: |
15. A spinal fusion device of claim 14 wherein said third clamping flange includes a first aperture configured to receive a first screw to secure said third clamping flange to the vertebral body located above said device and, said fourth clamping flange includes a second aperture configured to receive a second screw to secure said fourth clamping flange to the vertebral body located below said device. |
| Claim: |
16. A final fusion device of claim 15 wherein said first and second apertures each include a conical seat to provide polyaxial adjustment for each of said first and second screws as they are threaded into the vertebral body. |
| Current U.S. Class: |
623/1/716 |
| Current International Class: |
61 |
| رقم الانضمام: |
edspap.20110144755 |
| قاعدة البيانات: |
USPTO Patent Applications |
