Expandable fusion device and method of installation thereof
AssigneeGlobus Medical, Inc.
InventorsChad Glerum, Mark Weiman
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Abstract
The present invention provides an expandable fusion device capable of being installed inside an intervertebral disc space to maintain normal disc spacing and restore spinal stability, thereby facilitating an intervertebral fusion. In one embodiment, the fusion device includes a body portion, a first endplate, and a second endplate, the first and second endplates capable of being moved in a direction away from the body portion into an expanded configuration or capable of being moved towards the body portion into an unexpanded configuration. The fusion device is capable of being deployed and installed in both configurations.
Claims14
An expandable fusion device, comprising:
- a first endplate;
- a second endplate;
- a body portion positioned between the first and second endplates;
- a translation member receivable within the body portion in between the first and second endplates, wherein the translation member includes at least three upper ramped surfaces that contact corresponding ramped portions of the first endplate and at least three lower ramped surfaces that contact corresponding ramped portions of the second endplate;
- an actuation member engaged with the translation member;
- and
- an interference nut operably attached to a rear section of the body portion and configured to minimize the risk of the actuation member being loosened prior to or during use.
An expandable fusion device, comprising:
- a first endplate;
- a second endplate;
- a body portion positioned between the first and second endplates;
- a translation member receivable within the body portion in between the first and second endplates, wherein the translation member includes at least three upper ramped surfaces that contact corresponding grooved portions of the first endplate and at least three lower ramped surfaces that contact corresponding grooved portions of the second endplate;
- an actuation member engaged with the translation member;
- and
- an interference nut operably attached to a rear section of the body portion, wherein the interference nut is configured to cause drag on the actuation member thus minimizing the risk of the actuation member being loosened prior to or during use.
Dependencies are inferred from the claim text.