Expandable spinal cage
AssigneeDynamic Implants Inc.
InventorsCarl Michael Nilsson, Yehuda Leib Herschman, Byron Douglas Giddens
Life of this patent
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Abstract
One or more techniques and/or systems are disclosed for an expandable spinal cage device used in a spinal fusion procedure. The device can comprise three major pieces that are combined to expand the device both laterally and vertically in the intervertebral gap. A first piece is a cage support body, and a second piece is a width expander body inserted into the first piece that laterally expands the first piece. A third piece is a vertical expander body inserted into the first or second piece that results in vertical expansion of first piece. In this way, the first piece can be expanded laterally up to two times, and vertically up to two times.
Claims19
An expanding spinal cage device, comprising;
- a first piece comprising a cage support body;
- a second piece comprising a width expander body configured and sized for insertion into the first piece resulting in lateral expansion of the first piece from a first width to a second width;
- and
- a third piece comprising a vertical expander body configured and sized for insertion into the first or second piece resulting in vertical expansion of the first piece from a first height to a second height;
- wherein the second width is greater than the first width;
- and
- wherein the second height is greater than the first height.
An expanding spinal cage device, comprising:
- a first piece operable to expand both vertically and laterally;
- a second piece comprising a lateral expander body, wherein insertion of the second piece into the first piece results in the lateral expansion of the first piece from a first width to a second width;
- and
- a third piece comprising a vertical expander body, wherein insertion of the third piece into the second piece results in vertical expansion of the first piece from a first height to a second height;
- wherein the second width is one and one-half to two times greater than the first width;
- and
- wherein the second height is one and one-half to two times greater than the first height.
Dependencies are inferred from the claim text.