Interspinous spacer
First Claim
1. An interspinous spacer comprising:
- a body configured to be positioned between a superior spinous process and an inferior spinous process;
a wing assembly coupled to the body, the wing assembly comprising—
a first rotating member having a first inferior extension and a first superior extension; and
a second rotating member having a second inferior extension and a second superior extension, wherein the first and second rotating members rotate about a common rotational axis; and
an actuator coupled to the body and configured to rotate the wing assembly relative to the body such that—
the first and second inferior extensions rotate together in a posterior or anterior direction such that the inferior spinous process is positioned between the first and second inferior extensions; and
the first and second superior extensions rotate together in a corresponding anterior or posterior direction opposite the first and second inferior extensions such that the superior spinous process is positioned between the first and second superior extensions.
1 Assignment
0 Petitions
Accused Products
Abstract
An implantable spacer for placement between adjacent spinous processes is provided. The spacer includes a body and a wing rotatably connected to the body. The wing includes two U-shaped configurations that together define a substantially H-shaped configuration for retaining the spacer between adjacent spinous processes. An actuator assembly is connected to the body and to the wing with the proximal end of the spacer being connectable to a removable driver that is configured to engage the actuator assembly. While connected to the spacer, the driver is rotatable in one direction to deploy the wing from an undeployed to a deployed configuration and in an opposite direction to undeploy the wing. In the deployed configuration, the spacer acts as a space holder opening up the area of the spinal canal, maintaining foraminal height, reducing stress on the facet joints and relieving pain for the patient.
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Citations
23 Claims
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1. An interspinous spacer comprising:
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a body configured to be positioned between a superior spinous process and an inferior spinous process; a wing assembly coupled to the body, the wing assembly comprising— a first rotating member having a first inferior extension and a first superior extension; and a second rotating member having a second inferior extension and a second superior extension, wherein the first and second rotating members rotate about a common rotational axis; and an actuator coupled to the body and configured to rotate the wing assembly relative to the body such that— the first and second inferior extensions rotate together in a posterior or anterior direction such that the inferior spinous process is positioned between the first and second inferior extensions; and the first and second superior extensions rotate together in a corresponding anterior or posterior direction opposite the first and second inferior extensions such that the superior spinous process is positioned between the first and second superior extensions. - View Dependent Claims (2, 3, 4, 5, 13)
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6. An implantable spacer for placement between a superior spinous process and an inferior spinous process, each of the superior and inferior spinous processes having a first lateral surface opposite a second lateral surface, the spacer comprising:
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a body configured to be positioned between the superior and inferior spinous processes, the body having a first lateral side and a second lateral side; a wing assembly coupled to the body, the wing assembly comprising— a first arm at the first lateral side of the body; and a second arm at the second lateral side of the body, wherein the first and second arms are rotatable about a common axis; and an actuator coupled to the body and configured to rotate the first and second arms in a common rotational direction from an undeployed configuration to a deployed configuration, wherein in the deployed configuration the first arm is adjacent to the first lateral surface of the superior and inferior spinous processes and the second arm is adjacent to the second lateral surface of the superior and inferior processes. - View Dependent Claims (12, 14)
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7. A interspinous spacer comprising:
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a body configured to be positioned between a superior spinous process and an inferior spinous process; a wing assembly coupled to the body, the wing assembly comprising— a first rotating member having a first inferior extension and a first superior extension; and a second rotating member having a second inferior extension and a second superior extension; an actuator coupled to the body and configured to rotate the wing assembly relative to the body such that— the first and second inferior extensions rotate together in a posterior or anterior direction such that the inferior spinous process is positioned between the first and second inferior extensions; and the first and second superior extensions rotate together in a corresponding anterior or posterior direction opposite the first and second inferior extensions such that the superior spinous process is positioned between the first and second superior extensions; wherein the first inferior extension and the first superior extension extend coincidentally along a common axis in an undeployed state; and wherein the second inferior extension and the second superior extension extend coincidentally along a common axis in an undeployed state. - View Dependent Claims (8)
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9. An interspinous spacer comprising:
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a body configured to be positioned between a superior spinous process and an inferior spinous process; a wing assembly coupled to the body, the wing assembly comprising— a first rotating member having a first inferior extension and a first superior extension; and a second rotating member having a second inferior extension and a second superior extension; and an actuator coupled to the body and configured to rotate the wing assembly relative to the body such that— the first and second inferior extensions rotate together in a posterior or anterior direction such that the inferior spinous process is positioned between the first and second inferior extensions; and the first and second superior extensions rotate together in a corresponding anterior or posterior direction opposite the first and second inferior extensions such that the superior spinous process is positioned between the first and second superior extensions; wherein the first inferior extension and the first superior extension are integral with each other; and wherein the second inferior extension and the second superior extension are integral with each other.
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10. An interspinous spacer comprising:
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a body configured to be positioned between a superior spinous process and an inferior spinous process; a wing assembly coupled to the body, the wing assembly comprising— a first rotating member having a first inferior extension and a first superior extension, a second rotating member having a second inferior extension and a second superior extension, and a cross member extending between the first and second rotating members, wherein the cross member includes a caming feature; and an actuator coupled to the body and configured to rotate the wing assembly relative to the body such that— the first and second inferior extensions rotate together in a posterior or anterior direction such that the inferior spinous process is positioned between the first and second inferior extensions, and the first and second superior extensions rotate together in a corresponding anterior or posterior direction opposite the first and second inferior extensions such that the superior spinous process is positioned between the first and second superior extensions, and wherein the actuator includes a caming surface configured to contact the caming feature of the cross member surface to rotate the wing assembly. - View Dependent Claims (11)
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15. An implantable spacer for placement between a superior spinous process and an inferior spinous process, each of the superior and inferior spinous processes having a first lateral surface opposite a second lateral surface, the spacer comprising:
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a body configured to be positioned between the superior and inferior spinous processes, the body having a first lateral side and a second lateral side; a wing assembly coupled to the body, the wing assembly comprising— a first arm at the first lateral side of the body, the first arm includes a first superior extension and a first inferior extension; and a second arm at the second lateral side of the body, the second arm includes a second superior extension and a second inferior extension; and an actuator coupled to the body and configured to rotate the first and second arms in a common rotational direction from an undeployed configuration to a deployed configuration, wherein in the deployed configuration the first arm is adjacent to the first lateral surface of the superior and inferior spinous processes and the second arm is adjacent to the second lateral surface of the superior and inferior processes wherein in the deployed configuration the first and second superior extensions are configured to be positioned adjacent to the superior spinous process, and the first and second inferior extensions are configured to be positioned adjacent to the inferior spinous process; wherein the first superior extension and the first inferior extension extend coincidentally along a first common axis in the deployed and undeployed configurations; and wherein the second superior extension and the second inferior extension extend coincidentally along a second common axis in the deployed and undeployed configurations. - View Dependent Claims (16)
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17. An implantable spacer for placement between a superior spinous process and an inferior spinous process, each of the superior and inferior spinous processes having a first lateral surface opposite a second lateral surface, the spacer comprising:
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a body configured to be positioned between the superior and inferior spinous processes, the body having a first lateral side and a second lateral side; a wing assembly coupled to the body, the wing assembly comprising— a first arm at the first lateral side of the body; and a second arm at the second lateral side of the body; and an actuator coupled to the body and configured to rotate the first and second arms in a common rotational direction from an undeployed configuration to a deployed configuration, wherein in the deployed configuration the first arm is adjacent to the first lateral surface of the superior and inferior spinous processes and the second arm is adjacent to the second lateral surface of the superior and inferior processes; wherein the wing assembly further comprises a cross member extending between the first arm and the second arm, wherein the cross member has a caming feature that engages the actuator.
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18. An implantable spacer for placement between a superior spinous process and an inferior spinous process of a subject, the spacer comprising:
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a body configured to be positioned between the superior and inferior spinous processes and having a long axis; a wing assembly rotatably coupled to the body, the wing assembly comprising— a first arm positioned on a first side of the body, and a second arm positioned on a second side of the body; and an actuator configured to rotate the first and second arms from an undeployed configuration to a deployed configuration when the actuator is driven by a driver removably coupled to the actuator and the long axis of the body is at an anterior to posterior orientation, and wherein in the deployed configuration the first arm is adjacent to first lateral surfaces of the superior and inferior spinous processes and the second arm is adjacent to second lateral surfaces of the superior and inferior spinous processes. - View Dependent Claims (19, 20, 21, 22)
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23. An interspinous spacer comprising:
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a body configured to be positioned between a superior spinous process and an inferior spinous process; a wing assembly coupled to the body, the wing assembly comprising— a first rotating member having a first inferior extension and a first superior extension, and a second rotating member having a second inferior extension and a second superior extension, wherein the first and second rotating members rotate about a common rotational axis; and an actuator coupled to the body and configured to rotate the wing assembly relative to the body such that— the first and second inferior extensions rotate together in a posterior or anterior direction such that the inferior spinous process is positioned between the first and second inferior extensions, and the first and second superior extensions rotate together in a corresponding anterior or posterior direction opposite the first and second inferior extensions such that the superior spinous process is positioned between the first and second superior extensions; wherein the actuator is configured to rotate the first and second inferior extensions and the first and second superior extensions relative to the superior and inferior spinous processes while the body is positioned directly between the superior and inferior spinous processes and a long axis of the body extends in the anterior to posterior direction relative to the superior and inferior spinous processes.
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Specification