Intervertebral implant having extendable bone fixation members
First Claim
1. An implant configured to be fixed by an anchor in an intervertebral space defined by a first vertebral body and a second vertebral body, the implant having a top and a bottom disposed along a transversely opposite side of the implant from the top, the implant comprising:
- a peripheral wall comprisinga forward wall portion having an exterior face,a rearward wall portion disposed along a longitudinally opposite side of the implant from the forward wall portion,a first side wall portion,a second side wall portion disposed along a laterally opposite side of the implant from the first side wall portion,a top surface extending along the forward wall portion, the rearward wall portion, the first side wall portion, and the second side wall portion at the top of the implant, anda bottom surface extending along the forward wall portion, the rearward wall portion, the first side wall portion, and the second side wall portion at the bottom of the implant;
a central cavity at least partially bounded by the peripheral wall, the cavity comprising an opening at the top of the implant and an opening at the bottom of the implant; and
a fixation assembly comprisinga housing fixedly mountable to the peripheral wall at an opening along the forward wall portion, the housing comprising an upper surface oriented toward the top of the implant with the fixation assembly mounted to the peripheral wall, a lower surface oriented toward the bottom of the implant with the fixation assembly mounted to the peripheral wall, a front surface extending between the upper surface and the lower surface and extending to the exterior face, and a back surface extending between the upper surface and the lower surface and being disposed along a longitudinally opposite side of the housing from the front surface with the fixation assembly mounted to the peripheral wall,an anchor disposed in the housing and moveable between a retracted position in which the sharpened tip of the anchor is disposed below the top of the implant with the fixation assembly mounted to the peripheral wall, and an extended position in which a sharpened tip of the anchor is disposed above the top of the implant with the fixation assembly mounted to the peripheral wall, andan actuator connected to the anchor and disposed in the housing and moveable between a disengaged position in which the anchor is in the retracted position and an engaged position that places the anchor in the extended position.
6 Assignments
0 Petitions
Accused Products
Abstract
An intervertebral implant is configured to be fixed in an intervertebral space defined by a first vertebral body and a second vertebral body. The intervertebral implant includes an implant body sized to be inserted into an intervertebral space, and a fixation assembly configured to be attached to the implant body. The fixation assembly includes a housing that defines a first vertebral body facing surface and a second vertebral body facing surface spaced from the first vertebral body facing surface along a transverse direction. The fixation assembly further includes at least one fixation member supported by the housing and movable from a retracted position to an extended position, whereby in the extended position the fixation member extends out from the housing and into one of the vertebral bodies.
655 Citations
20 Claims
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1. An implant configured to be fixed by an anchor in an intervertebral space defined by a first vertebral body and a second vertebral body, the implant having a top and a bottom disposed along a transversely opposite side of the implant from the top, the implant comprising:
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a peripheral wall comprising a forward wall portion having an exterior face, a rearward wall portion disposed along a longitudinally opposite side of the implant from the forward wall portion, a first side wall portion, a second side wall portion disposed along a laterally opposite side of the implant from the first side wall portion, a top surface extending along the forward wall portion, the rearward wall portion, the first side wall portion, and the second side wall portion at the top of the implant, and a bottom surface extending along the forward wall portion, the rearward wall portion, the first side wall portion, and the second side wall portion at the bottom of the implant; a central cavity at least partially bounded by the peripheral wall, the cavity comprising an opening at the top of the implant and an opening at the bottom of the implant; and a fixation assembly comprising a housing fixedly mountable to the peripheral wall at an opening along the forward wall portion, the housing comprising an upper surface oriented toward the top of the implant with the fixation assembly mounted to the peripheral wall, a lower surface oriented toward the bottom of the implant with the fixation assembly mounted to the peripheral wall, a front surface extending between the upper surface and the lower surface and extending to the exterior face, and a back surface extending between the upper surface and the lower surface and being disposed along a longitudinally opposite side of the housing from the front surface with the fixation assembly mounted to the peripheral wall, an anchor disposed in the housing and moveable between a retracted position in which the sharpened tip of the anchor is disposed below the top of the implant with the fixation assembly mounted to the peripheral wall, and an extended position in which a sharpened tip of the anchor is disposed above the top of the implant with the fixation assembly mounted to the peripheral wall, and an actuator connected to the anchor and disposed in the housing and moveable between a disengaged position in which the anchor is in the retracted position and an engaged position that places the anchor in the extended position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A vertebral fusion device comprising:
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a ring-shaped implant body comprising upper and lower vertebral contact surfaces, an exterior surface extending between the upper and lower vertebral contact surfaces, and an opening formed on the exterior surface and extending into the implant body; a housing removably mountable to the opening with a first end of the housing extending to the exterior surface; an anchor movable from a first anchor position in which the anchor is contained within the housing to a second anchor position in which a tip of the anchor extends out of the housing and away from the implant body with the housing mounted to the opening; and an actuator having a first end comprising a tool attachment and a second end disposed within the housing, the anchor movable from a first actuator position that accommodates the anchor in the first anchor position to a second actuator position that places the anchor in the second anchor position. - View Dependent Claims (14, 15, 16, 17)
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18. An intervertebral fusion implant comprising:
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an implant body comprising upper and lower vertebral contact surfaces, an exterior perimeter surface extending between the upper and lower vertebral contact surfaces, and a pocket formed on the exterior surface; a housing insertable into the pocket and detachably mountable in the pocket with an end of the housing forming an extension of the exterior surface; an actuator at least partially disposed in the housing and translatable from a first anchor position to a second anchor position; and an anchor at least partially disposed in the housing and comprising a first end and a second end, the first end movable in response to movement of the second end caused by translation of the actuator. - View Dependent Claims (19, 20)
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Specification