Assemblies for provision of therapy to motion segments
First Claim
1. A spinal device assembly, the spinal device assembly comprising a distal component and a proximal component,the distal component comprising:
- an elongate body with at least one external thread for engagement with at least one vertebral body;
a distal end; and
a proximal end adapted to engage a distal end of the proximal component; and
the proximal component comprising;
an elongate body with at least one external thread for engagement with at least one vertebral body;
a distal end adapted to engage the proximal end of the distal component;
a proximal end adapted to engage a removable driver that rotates and axially advances the proximal component so that the distal end of the proximal component engages the proximal end of the distal component to impart axial force to the distal component thereby imposing distraction of an intervertebral disc space.
5 Assignments
0 Petitions
Accused Products
Abstract
Disclosed are methods and apparatus for the provision of spinal therapy to two or more adjacent motion segments accessed through a trans-sacral approach. The spinal therapies include fusion and dynamic stabilization with and without a distraction of the most cephalad motion segment of the two or more adjacent motion segments provided therapy. The disclosure includes methods and apparatus to impart a push distraction to increase the distance between two adjacent vertebrae. Related concepts for the extraction of previously inserted devices and the delivery and removal of plugs for plugging the interior cavities of implantable devices are disclosed.
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Citations
27 Claims
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1. A spinal device assembly, the spinal device assembly comprising a distal component and a proximal component,
the distal component comprising: -
an elongate body with at least one external thread for engagement with at least one vertebral body; a distal end; and a proximal end adapted to engage a distal end of the proximal component; and the proximal component comprising; an elongate body with at least one external thread for engagement with at least one vertebral body; a distal end adapted to engage the proximal end of the distal component; a proximal end adapted to engage a removable driver that rotates and axially advances the proximal component so that the distal end of the proximal component engages the proximal end of the distal component to impart axial force to the distal component thereby imposing distraction of an intervertebral disc space. - View Dependent Claims (2)
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3. An assembly comprising a distal device and a proximal device;
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the distal device comprising; a distal end; at least one set of threads for engagement with at least one vertebral body; and a proximal end with a cavity having an engagement zone; the proximal device comprising; a distal end with an extension adapted to fit at least a portion of the extension within the engagement zone in the cavity of the distal device; a threaded section for engagement with a vertebral body; and a proximal end with an interior cavity with a driver engagement section; wherein continued axial advancement of the proximal device after abutting the distal device results in an increased intervertebral spacing between adjacent engaged vertebral bodies. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An assembly comprising a distal device and a proximal device;
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the distal device comprising; a distal end; at least one set of threads for engagement with at least one vertebral body; and a proximal end with a cavity having an engagement zone; the proximal device comprising; a proximal end with a driver engagement section; a threaded section for engagement with a vertebral body; and a distal end with an extension adapted to fit at least a portion of the extension within the engagement zone in the cavity of the distal device; wherein the distal device further comprises a first set of male threads for engagement with a distal vertebral body and a second set of male threads with a same handedness for engagement with a less distal vertebral body. - View Dependent Claims (16)
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17. An assembly comprising a distal device and a proximal device;
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the distal device comprising; a distal end; at least one set of threads for engagement with at least one vertebral body; and a proximal end adapted to be pushed axially by a proximal device with a corresponding distal end; the proximal device comprising; a threaded section for engagement with a vertebral body; a proximal end with a driver engagement section; a distal end corresponding to the proximal end of the distal device to allow the proximal device when advancing axially from input to the driver engagement section to push on the distal device to impose a corresponding distraction as the proximal device does not transfer a significant amount of rotation to the distal device; a threaded section for engagement with a vertebral body; and a proximal end with a driver engagement section; wherein the distal device is provided with a proximal end with a set of threads for engagement with one vertebral body and a distal tip of the distal end for placement in an intervertebral disc space between the one vertebral body and a more distal vertebral body and the distal device is adapted to insert material into the intervertebral disc space between the one vertebral body and the more distal vertebral body. - View Dependent Claims (18, 19, 20)
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21. An assembly comprising a distal device and a proximal device;
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the distal device comprising; a distal end; at least one set of threads for engagement with at least one vertebral body; and the proximal device comprising; a threaded section for engagement with a vertebral body; and a proximal end with a driver engagement section; and a distal end; wherein; a cavity in a proximal end of the distal device having a socket for receipt of a corresponding polygonal driver for transfer of rotational forces from the polygonal driver to the distal device to rotate the distal device with respect to the at least one vertebral body; the cavity in the proximal end of the distal device having a threaded section for receipt of a corresponding set of threads on a distal end of a disengagement tool, the threaded section having an opposite handedness to the at least one set of threads on the distal device for engagement with the at least one vertebral body so that a disengagement tool can be rotated to engage the disengagement tool with the distal device and after completion of the threaded engagement impart a rotation to the distal device to disengage the distal device from the at least one vertebral body such that once disengaged from the at least one vertebral body but still engaged with the disengagement tool, the disengaged distal device can be removed with the distal end of the disengagement tool from an access channel.
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22. An assembly comprising a distal device and a proximal device;
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the distal device comprising; a distal end; at least one set of threads for engagement with at least one vertebral body; and a proximal end; the proximal device comprising; a distal end; a threaded section for engagement with a vertebral body; and a proximal end with a driver engagement section; wherein; the driver engagement section in a cavity in the proximal end of the proximal device comprising a socket for receipt of a corresponding polygonal driver for a transfer of rotational forces from the driver to the proximal device to rotate the proximal device with respect to the vertebral body; the cavity in the proximal end of the proximal device having a threaded section for receipt of a corresponding set of threads on a distal end of a disengagement tool, the threads having an opposite handedness to the threaded section of the proximal device for engagement with the vertebral body so that the disengagement tool can be rotated to engage the disengagement tool with the proximal device and after completion of the threaded engagement impart a rotation to the proximal device to disengage the proximal device from the vertebral body but still engaged with the disengagement tool, the disengaged proximal device can be removed with the distal end of the disengagement tool from an access channel.
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23. An assembly comprising a distal device and a proximal device;
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the distal device comprising; a distal end; at least one set of threads for engagement with at least one vertebral body; and a proximal end; the proximal device comprising; a distal end adapted to engage a corresponding shape on the proximal end of the distal device; a threaded section for engagement with a vertebral body; and a proximal end with a driver engagement section; and a thrust bearing located between the proximal end of the distal device and the distal end of the proximal device so that rotation of the proximal device causing the proximal device to advance towards the previously inserted distal device imparts an axial force through the thrust bearing to the distal device to increase a distance between the distal device and a vertebra engaged with the proximal device. - View Dependent Claims (24)
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25. An assembly comprising a distal device and a proximal device;
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the distal device comprising; a distal end; at least one set of threads for engagement with at least one vertebral body; and a proximal end; the proximal device comprising; a distal end adapted for a non-threaded, overlapping engagement with the proximal end of the distal device; a threaded section for engagement with a vertebral body; and a proximal end with a cavity having a driver engagement section; wherein; the distal device; is adapted for use in fusing together a motion segment comprising a vertebral body, an adjacent and more distal vertebral body and an intervertebral disc space between the vertebral body and the adjacent and more distal vertebral body, the distal device having the cavity along a centerline of a longitudinal axis in fluid communication with a set of at least one fenestration so that material provided to the proximal end of the distal device can be delivered into the intervertebral disc space; and the proximal device; is adapted for use in fusing together a motion segment comprising a vertebral body, an adjacent and more distal vertebral body and an intervertebral disc space between the vertebral body and the adjacent and more distal vertebral body, the proximal device having the cavity along a centerline of a longitudinal axis in fluid communication with a set of at least one fenestration so that material provided to the proximal end of the proximal device can be delivered into the intervertebral disc space; such that the assembly can be used in providing fusion therapy to two adjacent motion segments accessed through a single access channel.
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26. An assembly comprising a distal device and a proximal device;
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the distal device comprising; a distal end; at least one set of threads for engagement with at least one vertebral body; and a proximal end; the proximal device comprising; a distal end adapted for a non-threaded, overlapping engagement with the proximal end of the distal device; a threaded section for engagement with a vertebral body; and a proximal end with a cavity having a driver engagement section; wherein; the distal device; further comprises a flexible component in a portion of the distal device intended for placement in an intervertebral disc space between a vertebral body and an adjacent and more distal vertebral body and the distal device is adapted to insert material into the intervertebral disc space between the vertebral body and the more distal vertebral body by receiving material through the cavity to expand the flexible component outward from the distal device and into the intervertebral disc space; and the proximal device; is adapted for use in fusing together a motion segment comprising a vertebral body, an adjacent and more distal vertebral body and an intervertebral disc space between the vertebral body and the adjacent and more distal vertebral body, the proximal device having the cavity along a centerline of a longitudinal axis in fluid communication with a set of at least one fenestration so that material provided to the proximal end of the proximal device can be delivered into the intervertebral disc space; such that the assembly can be used in providing therapy to allow dynamic stabilization of a distal motion segment and to provide for fusion of an adjacent and more proximal motion segment, both motion segments accessed through a single access channel.
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27. An assembly comprising a distal device and a proximal device;
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the distal device comprising; a distal end; at least one set of threads for engagement with at least one vertebral body; and a proximal end with a cavity having an engagement zone; the proximal device comprising; a distal end adapted for a non-threaded, overlapping engagement with the proximal end of the distal device; a threaded section for engagement with a vertebral body; and a proximal end with a cavity with a driver engagement section; wherein; the distal device further comprises a flexible component in a portion of the distal device intended for placement in an intervertebral disc space between a vertebral body and an adjacent and more distal vertebral body and the distal device is adapted to insert material into the intervertebral disc space between the vertebral body and the more distal vertebral body by receiving material through the cavity to expand the flexible component outward from the distal device and into the intervertebral disc space; and the proximal device further comprises a flexible component in a portion of the proximal device intended for placement in an intervertebral disc space between a vertebral body an adjacent and more distal vertebral body and the proximal device is adapted to insert material into the intervertebral disc space between a vertebral body and a more distal vertebral body by receiving material through the cavity to expand the flexible component outward from the proximal device and into the intervertebral disc space; such that the assembly can be used in providing therapy to allow dynamic stabilization of both a distal motion segment and an adjacent and more proximal motion segment, both motion segments accessed through a single access channel.
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Specification