Devices and methods for vertebral bone realignment
First Claim
1. An implantable device configured for implantation within an intervertebral disc space, the intervertebral disc space disposed between a superior vertebral bone and an inferior vertebral bone, the implantable device comprising:
- a first member, the first member comprising;
a first top surface configured to at least partially abut the superior vertebral bone;
a first bottom surface movably coupled to the first top surface, the first bottom surface configured to at least partially abut the inferior vertebral bone;
a first side surface;
a second side surface opposing the first side surface;
a receiving segment configured to reversibly couple with at least a segment of a second member, the second member comprising at least a second top surface, a second bottom surface, and an intervening distraction mechanism at least partially disposed between the second top surface and the second bottom surface, the at least segment of the second member comprising at least a segment of one of the second top surface or the second bottom surface, the distraction mechanism of the second member configured to be selectively actuatable to increase of a first distance between the second top surface and the second bottom surface of the second member, and thereby cause increase of a second distance between at least a portion of the first top surface and the first bottom surface; and
a selectively actuatable locking mechanism, the selectively actuatable locking mechanism (i) being a separate structure relative to the second member, and (ii) being configured to immobilize the first top surface relative to the first bottom surface after actuation of the distraction mechanism;
wherein the receiving segment of the first member is further configured to, after actuation of the locking mechanism and immobilization of the first top surface relative to the first bottom surface, (i) uncouple from the at least segment of one of the second top surface or the second bottom surface, and (ii) enable removal of the second top surface and the second bottom surface of the second member from the first member while the first top surface remains immobilized relative to the first bottom surface.
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Accused Products
Abstract
Methods and apparatus for providing correction of one or more maladies or conditions of the spinal column of a living being. In one embodiment, the apparatus includes an implantable device configured to be selectively adjustable in one or more portions thereof so as to permit correction of asymmetries or irregularities of the spinal column via insertion into one or more affected intervertebral disc spaces. In one variant, the implantable device includes upper and lower host elements which are hinged or can pivot relative to one another, and an insertable distraction mechanism which is adjustable to enable one side or the other of the implantable device to alter height. In another variant, both sides of the implantable device can be adjusted for height via the host elements and one or more pivots or hinges. In one implementation, the distraction mechanism is adjustable from multiple approaches into the disc space.
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Citations
29 Claims
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1. An implantable device configured for implantation within an intervertebral disc space, the intervertebral disc space disposed between a superior vertebral bone and an inferior vertebral bone, the implantable device comprising:
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a first member, the first member comprising; a first top surface configured to at least partially abut the superior vertebral bone; a first bottom surface movably coupled to the first top surface, the first bottom surface configured to at least partially abut the inferior vertebral bone; a first side surface; a second side surface opposing the first side surface; a receiving segment configured to reversibly couple with at least a segment of a second member, the second member comprising at least a second top surface, a second bottom surface, and an intervening distraction mechanism at least partially disposed between the second top surface and the second bottom surface, the at least segment of the second member comprising at least a segment of one of the second top surface or the second bottom surface, the distraction mechanism of the second member configured to be selectively actuatable to increase of a first distance between the second top surface and the second bottom surface of the second member, and thereby cause increase of a second distance between at least a portion of the first top surface and the first bottom surface; and a selectively actuatable locking mechanism, the selectively actuatable locking mechanism (i) being a separate structure relative to the second member, and (ii) being configured to immobilize the first top surface relative to the first bottom surface after actuation of the distraction mechanism; wherein the receiving segment of the first member is further configured to, after actuation of the locking mechanism and immobilization of the first top surface relative to the first bottom surface, (i) uncouple from the at least segment of one of the second top surface or the second bottom surface, and (ii) enable removal of the second top surface and the second bottom surface of the second member from the first member while the first top surface remains immobilized relative to the first bottom surface. - View Dependent Claims (2, 3, 4, 5)
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6. A device assembly configured for at least a portion thereof to be at least partially within an intervertebral disc space of a spinal column, the device assembly comprising:
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a first member comprising; a first top element; a first bottom element movably coupled to the first top element; and a first distraction mechanism that is configured to be actuated; and a second member, the second member configured to (i) at least partially receive the first member, and (ii) be separable from the first member, the second member comprising; a second top element; a second bottom element movably coupled to the second top element; a coupling that is configured to reversibly couple with the first member; wherein the first member is configured such that, when the coupling of the second member is uncoupled from the first member, actuation of the first distraction mechanism is configured to cause an increase of a first distance between at least a portion of the first top element and the first bottom element of the first member; wherein the first member and the second member are configured such that, when the first member is coupled to the coupling of the second member, the actuation of the first distraction mechanism is configured to cause increase in a second distance between at least a portion of the second top element and the second bottom element of the second member; and wherein at least a segment of one of the first top element or the first bottom element comprises a surface having one or more projections configured to abut and fixate onto a segment of a vertebral bone adjacent to the intervertebral disc space. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A kit for treatment of a spinal segment, the spinal segment comprising at least a superior vertebral bone, an inferior vertebral bone, and an intervertebral disc space disposed between the superior vertebral bone and the inferior vertebral bone, the kit comprising:
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a distraction module, the distraction module comprising a first top side, a first bottom side opposing the first top side and movably coupled to the first top side, and a distraction mechanism, the distraction mechanism configured to (i) distract the first top side away from the first bottom side, and (ii) retain the first top side and the first bottom side in a distracted configuration; at least one housing module, the at least one housing module configured for at least partial implantation into the intervertebral disc space, the at least one housing module comprising a second top side, a second bottom side opposing the second top side and movably coupled to the second top side, and a coupler, the coupler configured to reversibly couple with at least a segment of the distraction module; and a non-implantable driver, the non-implantable driver configured to (i) at least partially couple with the distraction module, and (ii) actuate the distraction mechanism; wherein the distraction module, when the at least segment of the distraction module is coupled to the coupler of the at least one housing module, is configured to form an assembly with the at least one housing module; wherein the non-implantable driver is configured to actuate the distraction module in the assembly to produce concurrent (i) distraction of the first top side away from the first bottom side, and (ii) distraction of the second top side away from the second bottom side; and wherein the at least one housing module is configured such that the non-implantable driver is incapable of producing distraction of the second top side away from the second bottom side when the at least segment of the distraction module is uncoupled from the at least one housing module. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A kit for treatment of a spinal segment, the spinal segment comprising at least a superior vertebral bone, an inferior vertebral bone and an intervertebral disc space disposed between the superior vertebral bone and the inferior vertebral bone, the kit comprising:
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a distraction module comprising a first top side, a first bottom side opposing the first top side and movable relative to the first top side, a distraction mechanism, an actuation member configured to actuate the distraction mechanism, the distraction mechanism, upon the actuation thereof, configured to;
(i) distract the first top side away from the first bottom side, and (ii) retain the first top side and the first bottom side in a distracted configuration;at least one housing module comprising a second top side, a second bottom side opposing the second top side and movable relative to the second top side, and a coupler configured to reversibly seat at least a segment of the distraction module, the at least one housing module configured for at least partial implantation into the intervertebral disc space; and a non-implantable driver configured to couple with the actuation member of the distraction module in order to cause the actuation member to actuate the distraction mechanism; wherein, when the at least segment of the distraction module is seated in the coupler of the at least one housing module, the distraction mechanism, upon the actuation thereof, is further configured to cause the distraction of the first top side away from the first bottom side as well as concurrent distraction of the second top side away from the second bottom side; and wherein the distraction module and the at least one housing module are configured to form an assembly when the at least one segment of the distraction module is seated in the coupler of the at least one housing module. - View Dependent Claims (26, 27, 28, 29)
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Specification