Intervertebral implants, systems, and methods of use
First Claim
Patent Images
1. An intervertebral implant frame comprising:
- a support member that defines an inner surface and an outer surface opposite the inner surface, and at least two fixation element receiving apertures that each extend along a respective central axis, each of the fixation element receiving apertures configured to receive a respective bone fixation element to thereby attach the intervertebral implant frame to first and second vertebral bodies, respectively when the intervertebral implant frame is disposed in an intervertebral space defined by first and second surfaces of the first and second vertebral bodies, respectively;
a first arm that extends from the support member and includes a first inner spacer contacting surface, the first arm defining a first terminal end; and
a second arm that extends from the support member and includes a second inner spacer contacting surface spaced from the first inner spacer contacting surface along a first direction, the second arm further including a first vertebral body contacting surface and a second vertebral body contacting surface spaced from the first vertebral contacting along a second direction, the second arm defining a second terminal end, each of the first and second outer terminal ends spaced from the support member along a third direction that is substantially perpendicular to the to both the first direction and the second direction so as to define a first length and a second length, respectively, the first and second lengths each sized to be greater than a third length measured from an anterior end of the first vertebral body to a centroid of the first vertebral body;
wherein
1) the first and second inner spacer contacting surfaces define at least first and second respective contact locations, and at least one of the first and second arms is flexible so as to be movable between a first position, whereby the frame defines a first distance between the first and second contact locations along the first direction, and a second position, whereby the frame defines a second distance between the first and second contact locations along the first direction, the second distance greater than the first distance, such that when in the second position, the at least one of the first and second arms is biased toward the first position, and
2) the central axis of at least one of the at least two fixation element receiving apertures exits the outer surface of the support member at a location between the first and second vertebral body contacting surfaces with respect to the second direction.
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Abstract
An intervertebral implant frame that is configured to be attached to a spacer body can include a pair of arms that extend longitudinally from a support member such that the arms extend substantially around the spacer body. The arms may be configured to expand, crimp, or otherwise engage the spacer body to thereby hold the spacer body to the frame. The spacer body may be made from bone graft.
540 Citations
47 Claims
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1. An intervertebral implant frame comprising:
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a support member that defines an inner surface and an outer surface opposite the inner surface, and at least two fixation element receiving apertures that each extend along a respective central axis, each of the fixation element receiving apertures configured to receive a respective bone fixation element to thereby attach the intervertebral implant frame to first and second vertebral bodies, respectively when the intervertebral implant frame is disposed in an intervertebral space defined by first and second surfaces of the first and second vertebral bodies, respectively; a first arm that extends from the support member and includes a first inner spacer contacting surface, the first arm defining a first terminal end; and a second arm that extends from the support member and includes a second inner spacer contacting surface spaced from the first inner spacer contacting surface along a first direction, the second arm further including a first vertebral body contacting surface and a second vertebral body contacting surface spaced from the first vertebral contacting along a second direction, the second arm defining a second terminal end, each of the first and second outer terminal ends spaced from the support member along a third direction that is substantially perpendicular to the to both the first direction and the second direction so as to define a first length and a second length, respectively, the first and second lengths each sized to be greater than a third length measured from an anterior end of the first vertebral body to a centroid of the first vertebral body; wherein
1) the first and second inner spacer contacting surfaces define at least first and second respective contact locations, and at least one of the first and second arms is flexible so as to be movable between a first position, whereby the frame defines a first distance between the first and second contact locations along the first direction, and a second position, whereby the frame defines a second distance between the first and second contact locations along the first direction, the second distance greater than the first distance, such that when in the second position, the at least one of the first and second arms is biased toward the first position, and
2) the central axis of at least one of the at least two fixation element receiving apertures exits the outer surface of the support member at a location between the first and second vertebral body contacting surfaces with respect to the second direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An intervertebral implant frame comprising:
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a support member that defines an inner surface and at least two fixation element receiving apertures that are each configured to receive a respective bone fixation element to thereby attach the frame to first and second vertebral bodies when the intervertebral implant frame is disposed in an intervertebral space defined by the first and second vertebral bodies; a first flexible arm that extends from the support member and defines a first inner spacer contacting surface, a first outer surface opposite the first inner spacer contacting surface, and a first engagement member defined by the first outer surface; a second flexible arm that extends from the support member and defines a second inner spacer contacting surface that is spaced from the first inner spacer contacting surface, a second outer surface opposite the second inner spacer contacting surface, and a second engagement member defined by the second outer surface, wherein the inner surface of the support member and the first and second inner spacer contacting surfaces at least partially define a void configured to receive a spacer body that ingrows with the first and second vertebral bodies when the spacer is disposed in the intervertebral space; wherein the first and second engagement members are configured to receive respective first and second expansion forces from an expansion instrument prior to insertion of the spacer body into the void, such that at least one of the first and second flexible arms elastically expands with respect to the other of the first and second arms in response to the expansion force. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. An intervertebral implant frame comprising:
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a support member that defines an inner surface and at least two fixation element receiving apertures that are each configured to receive a respective bone fixation element to thereby affix the frame to superior and inferior vertebral bodies when the intervertebral implant frame is disposed in an intervertebral space that is defined by the superior and inferior vertebral bodies; a first arm that extends from the support member and includes a first inner spacer contacting surface, and a first crimpable arm; and a second arm that extends from the support member and includes a second inner spacer contacting surface spaced from the first inner spacer contacting surface along a first direction, and a second crimpable arm, wherein the inner surface of the support member, and the first and second inner spacer contacting surfaces together define a void that is configured to receive a spacer body, and the first crimpable arm is configured to be bent toward the second arm, the second crimpable arm is configured to be bent toward the first arm to thereby engage the spacer body and retain the spacer body within the void, the intervertebral implant frame has a first position in which the spacer body can be disposed between the first arm and the second arm, and the intervertebral has a second position in which the first crimpable arm and the second crimpable arm are crimped toward each other to thereby apply a retention force to the spacer body. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45)
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46. An intervertebral implant frame comprising:
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a support member that defines an inner surface and at least two fixation element receiving apertures that are each configured to receive a respective bone fixation element to thereby attach the frame to first and second vertebral bodies when the intervertebral implant frame is disposed in an intervertebral space defined by the first and second vertebral bodies; a first flexible arm that extends from the support member and defines a first inner spacer contacting surface; a second flexible arm that extends from the support member and defines a second inner spacer contacting surface that is spaced from the first inner spacer contacting surface, wherein the inner surface of the support member and the first and second inner spacer contacting surfaces at least partially define a void configured to receive a spacer body that ingrows with the first and second vertebral bodies when the spacer is disposed in the intervertebral space; wherein the first and second flexible arms include respective first and second engagement members define respective first and second dove-tailed slots that are configured to receive respective first and second expansion forces from an expansion instrument prior to insertion of the spacer body into the void, such that at least one of the first and second flexible arms elastically expands with respect to the other of the first and second arms in response to the expansion force. - View Dependent Claims (47)
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Specification