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US 2015/0032212 A1Published application
Lateral Spondylolisthesis Reduction Cage
AssigneeDePuy Synthes Products, Inc.
InventorsMichael J. O'Neil, Hassan Serhan, Douglas Raymond, John Riley Hawkins
Life of this patent
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Abstract
An intervertebral fusion device comprising inferior and superior fusion cage devices that provide an ability to correct spondylolisthesis via in-situ adjustment.
Claims10
An intervertebral fusion device for correcting spondylolisthesis in a patient, comprising:
- a) an upper cage having an anterior wall, a posterior wall, and a proximal wall and a distal wall connecting the anterior and posterior walls, and an upper surface for contacting an upper vertebral body and a lower surface having a first groove therein,
- b) a lower cage having an anterior wall, a posterior wall, and a proximal wall and a distal wall connecting the anterior and posterior walls, and a lower surface for contacting a lower vertebral body and an upper surface having a second groove therein, and
- c) a locking plate,
- wherein the lower surface of the upper cage contacts the upper surface of the lower cage so that the first and second grooves form a first throughhole running from the proximal wall to about the distal wall.
- wherein the locking plate is disposed in the first throughole.
2 more elements
An intervertebral fusion device for correcting spondylolisthesis in a patient, comprising:
- a) an upper cage having an anterior wall, a posterior wall, and a proximal wall and a distal wall connecting the anterior and posterior walls, and an upper surface for contacting an upper vertebral body and a lower surface,
- b) a lower cage having an anterior wall, a posterior wall, and a proximal wall and a distal wall connecting the anterior and posterior walls, and a lower surface for contacting a lower vertebral body and an upper surface,
- wherein the anterior wall is connected to the proximal wall by a first dual linkage and to the distal wall by a second dual linkage,
- wherein the posterior wall is connected to the proximal wall by a third dual linkage and to the distal wall by a fourth dual linkage.
- wherein the linkages allow the upper plate to pivot relative to the lower plate in the plane of the proximal wall.
2 more elements
Dependencies are inferred from the claim text.