Spinal tissue distraction devices
First Claim
1. An intravertebral implant system for treating a vertebral body having opposed endplates, the system comprising:
- an elongated cannula, an elongated guide member and an elongated implant;
the cannula including a distal end portion for insertion into a vertebral body, an aperture in the distal end portion and a lumen extending proximally from the aperture;
the elongated guide member including a distal end portion and being advanceable through the lumen of the cannula between a first position wherein the distal end portion of the guide member is disposed within the lumen and a second position wherein the distal end portion of the guide member extends through the aperture of the cannula into the vertebral body and a more proximal portion of the guide member resides within the cannula;
the distal end portion of the guide member, when in the first position being constrained by the cannula to an insertion configuration allowing advancement through the lumen and the aperture of the cannula and, when in the second position, being unconstrained by the cannula and forming an inserted configuration that includes a plurality of generally horizontally-disposed windings within the vertebral body; and
the elongated implant being independently movable longitudinally relative to the guide member for advancement along the guide member through the lumen of the cannula and the aperture when the guide member is in the second position, the implant also being advanceable along the inserted configuration of the distal end portion of the guide member to define an intravertebral structure including a plurality of generally horizontal-disposed windings within the vertebral body.
8 Assignments
0 Petitions
Accused Products
Abstract
Spinal tissue distraction devices that include at least one guide member for guiding a distraction device to a location between layers of spinal tissue. The guide member has a proximal end portion and a distal end portion. The distal end portion is adapted for insertion between the tissue layers and defines a shape of a desired support structure. The distraction device is slidably mounted on the guide member for advancing the distraction device distally along the guide member for insertion of the distraction device between the tissue layers. The distraction device substantially conforms to the shape defined by the distal end portion of the guide member to form a support structure that separates, supports or both separates and supports the tissue layers.
800 Citations
20 Claims
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1. An intravertebral implant system for treating a vertebral body having opposed endplates, the system comprising:
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an elongated cannula, an elongated guide member and an elongated implant; the cannula including a distal end portion for insertion into a vertebral body, an aperture in the distal end portion and a lumen extending proximally from the aperture; the elongated guide member including a distal end portion and being advanceable through the lumen of the cannula between a first position wherein the distal end portion of the guide member is disposed within the lumen and a second position wherein the distal end portion of the guide member extends through the aperture of the cannula into the vertebral body and a more proximal portion of the guide member resides within the cannula; the distal end portion of the guide member, when in the first position being constrained by the cannula to an insertion configuration allowing advancement through the lumen and the aperture of the cannula and, when in the second position, being unconstrained by the cannula and forming an inserted configuration that includes a plurality of generally horizontally-disposed windings within the vertebral body; and the elongated implant being independently movable longitudinally relative to the guide member for advancement along the guide member through the lumen of the cannula and the aperture when the guide member is in the second position, the implant also being advanceable along the inserted configuration of the distal end portion of the guide member to define an intravertebral structure including a plurality of generally horizontal-disposed windings within the vertebral body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An intravertebral implant system for treating a vertebral body having opposed endplates, the system comprising:
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an elongated cannula, an elongated guide member and an elongated implant; the cannula including a distal end portion for insertion into a vertebral body, an aperture in the distal end portion and a lumen extending proximally from the aperture; the elongated guide member including a distal end portion and being advanceable through the lumen of the cannula between a first position wherein the distal end portion of the guide member is disposed within the lumen and a second position wherein the distal end portion of the guide member extends through the aperture of the cannula into the vertebral body; the distal end portion of the guide member, when in the first position being constrained by the cannula to a configuration allowing advancement through the lumen and, when in the second position, being unconstrained by the cannula and forming an arcuate configuration; and the elongated implant being independently movable longitudinally relative to the guide member for advancement along the guide member through the lumen of the cannula and the aperture when the guide member is in the second position, the implant also being advanceable along and conforming to the arcuate configuration of the distal end portion of the guide member to define a one piece arcuate intravertebral structure extending greater than 360 degrees and that extends between and separates and/or supports the endplates of the vertebral body. - View Dependent Claims (12, 13, 14, 15, 16)
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17. An intravertebral implant system for treating a vertebral body having opposed endplates, the system comprising:
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an elongated guide wire and an elongated implant; the elongated guide wire including a distal end portion sufficiently flexible for changing between a substantially linear configuration for insertion into a vertebral body and an arcuate configuration within the vertebral body in which the distal end portion of the guide wire extends at least 360 degrees about a vertical axis; and the elongated implant being independently movable longitudinally relative to the guide wire for advancement along the guide wire while the guide wire is stationary, the implant being constrained by the guide wire to conform to the configuration of the distal end portion of the guide wire, whereby the implant has a substantially linear configuration for insertion into a vertebral body and an arcuate configuration within the vertebral body in which the implant extends greater than 360 degrees about the vertical axis to provide a support structure that separates and/or supports the endplates of the vertebral body. - View Dependent Claims (18, 19, 20)
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Specification