Expandable fusion device and method of installation thereof
First Claim
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1. A method of stabilizing a spine comprising:
- providing an intervertebral implant comprising;
a first endplate having an upper side and a lower side;
a second endplate having an upper side and a lower side;
a body portion having a first end, a second end, a first side portion connecting the first end and the second end, and a second side portion connecting the first end and the second end;
a translation member received between the first endplate and the second endplate, the translation member including at least two first angled surfaces of which at least one of the two first angled surfaces is configured to engage a contact surface of the first endplate and at least two second angled surfaces of which at least one of the two second angled surfaces is configured to engage a contact surface of the second endplate,wherein the at least two first angled surfaces are sloped generally in a same direction,actuating an actuation member to move the translation member causing at least one of two first angled surfaces to push against the contact surface of the first endplate and at least one of the two second angled surfaces to push against the contact surface of the second endplate, thereby causing outward expansion of the first endplate and second endplate; and
positioning the intervertebral implant in an intervertebral disc space.
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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.
320 Citations
18 Claims
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1. A method of stabilizing a spine comprising:
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providing an intervertebral implant comprising; a first endplate having an upper side and a lower side; a second endplate having an upper side and a lower side; a body portion having a first end, a second end, a first side portion connecting the first end and the second end, and a second side portion connecting the first end and the second end; a translation member received between the first endplate and the second endplate, the translation member including at least two first angled surfaces of which at least one of the two first angled surfaces is configured to engage a contact surface of the first endplate and at least two second angled surfaces of which at least one of the two second angled surfaces is configured to engage a contact surface of the second endplate, wherein the at least two first angled surfaces are sloped generally in a same direction, actuating an actuation member to move the translation member causing at least one of two first angled surfaces to push against the contact surface of the first endplate and at least one of the two second angled surfaces to push against the contact surface of the second endplate, thereby causing outward expansion of the first endplate and second endplate; and positioning the intervertebral implant in an intervertebral disc space. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of stabilizing a spine comprising:
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providing an intervertebral implant comprising; a first endplate having an upper side and a lower side, wherein the first endplate includes a first opening; a second endplate having an upper side and a lower side, wherein the second endplate includes a second opening; a body portion having a first end, a second end, a first side portion connecting the first end and the second end, and a second side portion connecting the first end and the second end; a translation member receivable in the body portion, the translation member including at least two first angled surfaces, one of the at least two first angled surfaces configured to engage a surface of the first endplate and at least two second angled surfaces, one of the at least two second angled surfaces configured to engage a surface of the second endplate, wherein the at least two first angled surfaces are sloped generally in the same direction, moving the translation member causing at least one of two first angled surfaces to push against the surface of the first endplate and at least one of the two second angled surfaces to push against the surface of the second endplate, thereby causing outward expansion of the first endplate and second endplate; and positioning the intervertebral implant in an intervertebral disc space. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A method for stabilizing the spine comprising:
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providing a first and second intervertebral implant, the first and second intervertebral implant each comprising; a first endplate having an upper side and a lower side; a second endplate having an upper side and a lower side; a body portion having a first end, a second end, a first side portion connecting the first end and the second end, and a second side portion connecting the first end and the second end; an actuation member coupled to the translation member, a translation member including at least two first angled surfaces, one of the at least two first angled surfaces configured to engage a ramped surface of the first endplate and at least two second angled surfaces, one of the at least two second angled surfaces configured to engage a ramped surface of the second endplate; wherein the at least two first angled surfaces are sloped generally in the same direction, actuating an actuation member to move the translation member causing at least one of two first angled surfaces to push against the ramped surface of the first endplate and at least one of the two second angled surfaces to push against the ramped surface of the second endplate, thereby causing outward expansion of the first endplate and second endplate; and positioning the first and second intervertebral implant in an intervertebral disc space. - View Dependent Claims (17, 18)
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Specification