Minimally Invasive Spine Restoration Systems, Devices, Methods and Kits
The invention discloses methods and devices for repairing, replacing and/or augmenting natural facet joint surfaces and/or facet capsules. A facet joint restoration device of the invention for use in a restoring a facet joint surface comprises: a cephalad facet joint element comprising a flexible member adapted to engage a first vertebrae and an artificial cephalad joint; and a caudad facet joint element comprising a connector adapted for fixation to a second vertebrae and an artificial caudad joint adapted to engage the cephalad facet joint. In another embodiment, the invention discloses a facet joint replacement device for use in replacing all or a portion of a natural facet joint between a first vertebrae and a second vertebrae comprising: a first cephalad facet joint element having a fixation member adapted to engage a lamina or spinous process of the first vertebrae and a first caudad facet joint element, the first caudad facet joint element comprising a first caudad connector adapted to fixate to the second vertebral body and an artificial caudad facet surface adapted to engage with the cephalad facet joint element.
1 . A facet joint restoration device for use in a restoring a facet joint surface comprising:
(a) a cephalad facet joint element comprising (1) a flexible member adapted to engage a first vertebrae and (2) an artificial cephalad joint; and
(b) a caudad facet joint element comprising (1) a connector adapted for fixation to a second vertebrae and (2) an artificial caudad joint adapted to engage the cephalad facet joint.
2 . The facet joint restoration device according to claim 1 wherein the flexible member is adapted to engage a lamina of the first vertebrae.
3 . The facet joint restoration device according to claim 1 wherein the cephalad facet joint further comprises a plate with an anchoring mechanism adapted to engage a lamina of the first vertebrae.
4 . The facet joint restoration device of claim 3 wherein the anchoring mechanism includes anchoring mechanisms selected from the group consisting of teeth, ridges, nubs, serrations, granulations, a stem, a screw and a spike.
5 . The facet joint restoration device of claim 2 wherein the cephalad facet joint element further comprises a second anchoring mechanism for securing the cephalad facet joint element to the first vertebrae.
6 . The facet joint restoration device according to claim 2 wherein the connector is adapted for fixation to a pedicle of the second vertebrae.
7 . The facet joint restoration device according to claim 5 wherein the second anchoring mechanism comprises a bony in-growth surface.
8 . The facet joint restoration device according to claim 1 wherein the device replaces tissue removed from the facet joint.
9 . The facet joint restoration device according to claim 1 wherein the device is adapted to restore or maintain motion or mobility for the facet joint.
10 . The facet restoration device according to claim 1 wherein a surface of one of the cephalad facet joint element or caudad facet joint element is adapted to contour to an opposing mating surface.
11 . The facet restoration device according to claim 1 wherein the artificial caudad joint is a caudad cup having a concave surface.
12 . The facet restoration device according to claim 1 wherein the flexible member is a flexible cable.
13 . The facet restoration device according to claim 12 wherein the flexible cable is surrounded by a tube.
14 . The facet restoration device according to claim 12 wherein the flexible cable is adapted to engage a lock.
15 . The facet restoration device according to claim 1 further comprising a spring washer adapted to engage a surface of the first vertebrae.
16 . The facet restoration device according to claim 1 further comprising a malleable plate adapted to engage a laminar surface to support the cephalad facet joint element during implantation.
17 . A facet joint replacement device for use in replacing all or a portion of a natural facet joint between a first vertebrae and a second vertebrae comprising:
(a) a first cephalad facet joint element having a fixation member adapted to engage a lamina or spinous process of the first vertebrae and;
(b) a first caudad facet joint element, the first caudad facet joint element comprising a first caudad connector adapted to fixate to the second vertebral body and an artificial caudad facet surface adapted to engage with the cephalad facet joint element.
18 . The facet joint replacement device according to claim 17 wherein the fixation member is a flexible cable.
19 . The facet joint replacement device according to claim 17 further comprising a second cephalad facet joint element and a first crossbar adapted to connect the first cephalad facet joint element to the second cephalad facet joint element.
20 . The facet joint replacement device of claim 17 further comprising a second caudad facet joint element and a first crossbar adapted to connect the first caudad facet joint element to the second caudad facet joint element.
21 . The facet joint replacement device of claim 19 further comprising a second caudad facet joint element and a second crossbar adapted to connect the first caudad facet joint element to the second caudad facet joint element.
22 . The facet replacement device according to claim 17 further comprising a laminar clamp.
23 . The facet restoration device according to claim 22 wherein the laminar clamp is adapted to engage the first cephalad facet joint element.
24 . The facet replacement device according to claim 23 wherein the laminar clamp further comprises teeth for engaging a laminar surface.
25 . The facet replacement device according to claim 23 wherein the laminar clamp is further comprised of a first component and a second component adapted to adjustably engage the lamina.
26 . The facet restoration device according to claim 23 wherein the first cephalad facet joint element is adapted to extend from the laminar clamp.
27 . The facet replacement device according to claim 17 wherein the artificial caudad facet surface comprises a caudad cup.
28 . The facet replacement device according to claim 17 wherein the first cephalad facet joint element rotatably engages the fixation member.
29 . The facet replacement device according to claim 18 wherein the flexible cable is surrounded by a tube.
30 . The facet replacement device according to claim 17 further comprising a malleable plate adapted to engage a laminar surface to support the cephalad facet joint element.
31 . A functional spine unit restoration system for use in a functional spine unit at a vertebral level in a spine comprising:
(a) a first and second cephalad facet joint element;
(b) a first and second caudad facet joint element comprising a connector adapted to secure a vertebral body and an artificial caudad joint adapted to engage the cephalad fact joint;
(c) a crossbar adapted to engage the first caudad facet joint element at a first end and the second caudad facet joint element at a second end; and
(d) an artificial intervertebral disc.
32 . The functional spine unit restoration system according to claim 31 wherein the anchor is a flexible cable.
33 . The functional spine unit restoration system according to claim 31 wherein the cephalad facet joint further comprises a plate with an anchoring mechanism adapted to engage the lamina.
34 . The functional spine unit restoration system of claim 33 wherein the anchoring mechanism includes anchoring mechanisms selected from the group consisting of teeth, ridges, nubs, serrations, granulations, a stem, and a spike.
35 . The functional spine unit restoration system of claim 33 wherein the plate further comprises a threaded rod adapted and configured to engage a threaded aperture of a bearing.
36 . The functional spine unit restoration system according to claim 31 wherein the device is configured from naturally occurring materials adapted to form the device, ceramic, metal, or polymer, or combinations thereof.
37 . The functional spine unit restoration system according to claim 31 wherein the device restores the biomechanical operation of the functional spine unit.
38 . The functional spine unit restoration system according to claim 31 wherein the device treats degenerating or diseased tissue in the target functional spine unit.
39 . The functional spine unit restoration system according to claim 31 wherein the device is adapted to restore or maintain motion or mobility for the target functional spine unit.
40 . The functional spine unit restoration system according to claim 31 wherein a surface of one of the cephalad joint or caudad joint is adapted to contour to an opposing mating surface.
41 . The functional spine unit restoration system according to claim 31 wherein a surface of one of the cephalad joint or caudad joint is adapted to contour to an opposing mating surface.
42 . The functional spine unit restoration system according to claim 32 wherein the flexible cable is adapted to engage a lock.
43 . The functional spine unit restoration system according to claim 31 further comprising a laminar clamp.
44 . The functional spine unit restoration system according to claim 43 wherein the laminar clamp is adapted to engage the crossbar.
45 . The functional spine unit restoration system according to claim 43 wherein the laminar clamp further comprises teeth for engaging a laminar surface.
46 . The functional spine unit restoration system according to claim 43 wherein the laminar clamp is further comprised of a first component and a second component adapted to adjustably engage the lamina.
47 . The functional spine unit restoration system according to claim 43 wherein the cephalad joints are adapted to extend from the laminar clamp.
48 . The functional spine unit restoration system according to claim 43 wherein the laminar clamp is further adapted to engage the crossbar.
49 . The functional spine unit restoration system according to claim 43 wherein an orientation of a first cephalad joint to a first caudad joint is different than an orientation of a second cephalad joint to a second caudad joint.
50 . The functional spine unit restoration system according to claim 43 wherein the laminar clamp is adjustable along a length parallel to a midline of the spine.
51 . The functional spine unit restoration system according to claim 31 wherein the artificial caudad joint is a caudad cup.
52 . The functional spine unit restoration system according to claim 31 wherein the artificial cephalad joint rotatably engages the flexible cable.
53 . The functional spine unit restoration system according to claim 31 wherein the flexible cable is surrounded by a tube.
54 . The functional spine unit restoration system according to claim 31 further comprising a spring washer adapted to engage a surface of a vertebral body.
55 . The functional spine unit restoration system according to claim 31 further comprising a malleable plate adapted to engage a laminar surface to support the cephalad joint element during implantation.
56 . A kit for restoring a functional spine unit at a vertebral level in a spine comprising:
(a) a first and second cephalad facet joint element;
(b) a first and second caudad facet joint element comprising a connector adapted to secure a vertebral body and an artificial caudad joint adapted to engage the cephalad fact joint;
(c) a crossbar adapted to engage the first caudad facet joint element at a first end and the second caudad facet joint element at a second end; and
(d) an artificial intervertebral disc.