PLIF OPPOSING WEDGE RAMP
First Claim
1. A spinal fusion device for adjusting the space between vertebrae comprising an upper section having a first end, a top surface and depending sidewalls, said sidewalls terminating in a first inclined plane, a lower section having a second end, a bottom surface and upstanding sidewalls, said upstanding sidewalls terminating in a second inclined plane, said upper section and said lower section movably connected in a first thin relationship and means connected to said upper section and said lower section for moving said first section and said second section into a second thicker relationship.
2 Assignments
0 Petitions
Accused Products
Abstract
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 distractor increases the height of the device.
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Citations
14 Claims
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1. A spinal fusion device for adjusting the space between vertebrae comprising an upper section having a first end, a top surface and depending sidewalls, said sidewalls terminating in a first inclined plane, a lower section having a second end, a bottom surface and upstanding sidewalls, said upstanding sidewalls terminating in a second inclined plane, said upper section and said lower section movably connected in a first thin relationship and means connected to said upper section and said lower section for moving said first section and said second section into a second thicker relationship.
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2. A spinal fusion device for adjusting the space between vertebrae comprising an upper section having a top surface and depending sidewalls, said depending sidewalls terminating in a first inclined plane, a lower section having a bottom surface and upstanding sidewalls, said upstanding sidewalls terminating in a second inclined plane, and a distractor located between said upstanding sidewalls and said depending sidewalls, said distractor having adjustment means for moving said distractor relative to said upper section and said lower section thereby increasing the distance between said top surface and said bottom surface.
- 3. 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, a link slidably mounted in said first end wall and said second end wall whereby said upper section and said lower section may move apart.
Specification