Claims
- 1. An anterior stabilization device comprising:
- a generally hollow intervertebral spacer having anterior and posterior sides and comprising:
- a side wall having a generally oval cross-sectional shape;
- a porous superior wall;
- a porous inferior wall;
- at least one superior lip extending upwardly above the side wall at the anterior side of the spacer;
- at least one inferior lip extending downwardly below the side wall at the inferior side of the spacer;
- a screw hole in each superior and inferior lip; and
- access means for allowing insertion of bone graft material into the hollow interior of the spacer; and
- a retaining plate fixedly attachable to the anterior side of the spacer, said retaining plate being sized to cover at least a portion of the head of each bone screw which is inserted through screw holes of each superior and inferior lip.
- 2. An anterior stabilization device as claimed in claim 1 wherein the spacer further comprises an anterior extension and wherein the superior and inferior lips extend upwardly and downwardly from the anterior extension.
- 3. An anterior stabilization device as claimed in claim 1 wherein each of the superior and inferior walls are dome-shaped.
- 4. An anterior stabilization device as claimed in claim 1 wherein the spacer has a height of from about 7 to about 14 mm.
- 5. An anterior stabilization device as claimed in claim 1 wherein the spacer has a lateral width of from about 13 to about 32 mm.
- 6. An anterior stabilization device as claimed in claim 1 wherein the spacer has an anterior-posterior width of from about 10 to about 30 mm.
- 7. An anterior stabilization device as claimed in claim 1 wherein the spacer comprises two inferior lips and one superior lip.
- 8. An anterior stabilization device as claimed in claim 1 wherein the access means comprises at least one opening in the side wall at the anterior side of the spacer.
- 9. An anterior stabilization device as claimed in claim 1 wherein the access means comprises a removably attachable superior wall.
- 10. An anterior stabilization device as claimed in claim 1 wherein the access means comprises a removably attachable inferior wall.
- 11. An anterior stabilization device as claimed in claim 1 wherein the spacer is sized to fit within the intervertebral disk space between two adjacent cervical vertebrae.
- 12. An anterior stabilization device as claimed in claim 1 wherein the spacer is sized to fit within the intervertebral disk space between two adjacent thoracic vertebrae.
- 13. An anterior stabilization device as claimed in claim 1 wherein the spacer is sized to fit with the intervertebral disk space between two adjacent lumbar vertebrae.
CROSS-REFERENCE TO RELATED APPLICATIONS
This application in a continuation of U.S. application Ser. No. 08/764,089, filed Dec. 6, 1996, now abandoned, which claims priority of Provisional Application Ser. No. 60/008,365, filed Dec. 8, 1995.
US Referenced Citations (11)
Foreign Referenced Citations (1)
Number |
Date |
Country |
179695 A1 |
Apr 1986 |
EPX |
Non-Patent Literature Citations (1)
Entry |
Advertisement for Orion, "Anterior Cerical Plate System", Danek Medical, Inc., 1994. |
Continuations (1)
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Number |
Date |
Country |
Parent |
764089 |
Dec 1996 |
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