Expandable Fusion Device and Method of Installation Thereof
First Claim
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1. A surgical method comprising:
- creating an access path to an intervertebral disc space;
inserting an expandable implant into the disc space, wherein the expandable implant comprises;
a first endplate;
a second endplate opposed to the first endplate;
a central ramp positioned between the first endplate and the second endplate, wherein the central ramp comprises a first end and a second end, wherein the second end includes a first ramped portion configured to engage a portion of the first endplate and a second ramped portion configured to engage a portion of the second endplate;
a driving ramp positioned between the first endplate and the second endplate, wherein the driving ramp comprises a first end and a second end, wherein the second end includes a first angled portion configured to engage a portion of the first endplate and a second angled portion configured to engage a portion of the second endplate; and
an actuator insertable through the driving ramp, wherein the actuator is configured to translate the driving ramp such that the second end of the driving ramp is moved closer to the second end of the central ramp to thereby cause expansion of the first endplate and the second endplate; and
introducing bone graft material adjacent the expandable implant.
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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 central ramp, a first endplate, and a second endplate, the central ramp capable of being moved in a first direction to move the first and second endplates outwardly and into an expanded configuration. The fusion device is capable of being deployed down an endoscopic tube.
32 Citations
20 Claims
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1. A surgical method comprising:
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creating an access path to an intervertebral disc space; inserting an expandable implant into the disc space, wherein the expandable implant comprises; a first endplate; a second endplate opposed to the first endplate; a central ramp positioned between the first endplate and the second endplate, wherein the central ramp comprises a first end and a second end, wherein the second end includes a first ramped portion configured to engage a portion of the first endplate and a second ramped portion configured to engage a portion of the second endplate; a driving ramp positioned between the first endplate and the second endplate, wherein the driving ramp comprises a first end and a second end, wherein the second end includes a first angled portion configured to engage a portion of the first endplate and a second angled portion configured to engage a portion of the second endplate; and an actuator insertable through the driving ramp, wherein the actuator is configured to translate the driving ramp such that the second end of the driving ramp is moved closer to the second end of the central ramp to thereby cause expansion of the first endplate and the second endplate; and introducing bone graft material adjacent the expandable implant. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A surgical method comprising:
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creating an access path to an intervertebral disc space; and inserting an expandable implant into the disc space, wherein the expandable implant comprises; a first endplate; a second endplate opposed to the first endplate; a central ramp positioned between the first endplate and the second endplate, wherein the central ramp comprises a first end and a second end, wherein the second end includes a first ramped portion configured to engage a portion of the first endplate and a second ramped portion configured to engage a portion of the second endplate; a driving ramp positioned between the first endplate and the second endplate, wherein the driving ramp comprises a first end and a second end, wherein the second end includes a first angled portion configured to engage a portion of the first endplate and a second angled portion configured to engage a portion of the second endplate; and an actuator insertable through the driving ramp, wherein the actuator is configured to translate the driving ramp such that the second end of the driving ramp is moved closer to the second end of the central ramp to thereby cause expansion of the first endplate and the second endplate, wherein at least one of the first endplate and the second endplate is capable of lordotic expansion. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification