Bone support device, system, and method

Abstract

A bone support and/or barrier device, system, kit, and method can include an implantable structure having an outer surface, an inner surface, a first bone contact portion, and a second bone contact portion. The structure can be collapsible to an undeployed configuration capable of percutaneous insertion to the interior of a bone and expandable to a deployed configuration in the bone. In the deployed configuration, the first bone contact portion can contact a first portion of the bone, and the second bone contact portion can contact a second portion of the bone such that a load placed on the first portion of the bone can be transferred through the implantable structure to the second portion of the bone. The implantable structure can include a barrier material adapted to restrict a bone filler material inserted into the bone adjacent the inner surface of the structure from flowing to the outer surface of the structure.

1 . A device, comprising:
 a structure implantable in a bone and having an outer surface, an inner surface, a first bone contact portion, and a second bone contact portion, at least a portion of the outer surface comprising the first bone contact portion,   the structure collapsible to an undeployed configuration capable of percutaneous insertion to the interior of the bone and expandable to a deployed configuration in the interior of the bone,   wherein in the deployed configuration the first bone contact portion contacts at least the first portion of the bone from the interior of the bone, and the second bone contact portion contacts at least a second portion of the bone, and   wherein a load on the first portion of the bone is transferred through the structure to the second portion of the bone.   
     
     
         2 . The device of  claim 1 , wherein the bone comprises a vertebral body, the first portion of the bone comprises an endplate, and the second portion of the bone comprises a side wall of the vertebral body. 
     
     
         3 . The device of  claim 1 , wherein the bone comprises a vertebral body, the first portion of the bone comprises a first endplate, and the second portion of the bone comprises a second endplate opposite the first endplate. 
     
     
         4 . The device of  claim 1 , further comprising a barrier material attached to the structure adapted to prohibit substantially all flow of bone filler material from the inner surface to the outer surface of the structure. 
     
     
         5 . The device of  claim 1 , wherein the implantable structure further comprises:
 a central rod; and   a plurality of support members extendable outwardly from an end of the central rod in a circular pattern.   
     
     
         6 . The device of  claim 5 ,
 wherein the deployed configuration further comprises the plurality of support members extending outwardly in a dome shape,   wherein at least a portion of an outer surface of the outwardly extending support members comprises the first bone contact portion, and   wherein distal ends of the outwardly extending support members comprise the second bone contact portion.   
     
     
         7 . The device of  claim 5 , further comprising an elongate member having a proximal end and a distal end,
 wherein the central rod is pivotably attached to the distal end of the elongate member and a handle is attached to the proximal end of the elongate member, and   wherein the handle comprises a first mechanism adapted to pivot the central rod to an approximately 90 degree angle relative to a longitudinal axis of the elongate member and a second mechanism adapted to extend the support members outwardly from the central rod.   
     
     
         8 . The device of  claim 7 , further comprising a release mechanism adapted to release the central rod from the elongate member. 
     
     
         9 . The device of  claim 5 , the implantable structure further comprising at least two sets of the plurality of support members, each set of support members capable of being deployed in a different direction in the interior of the bone. 
     
     
         10 . The device of  claim 1 , wherein the implantable structure further comprises a frame comprising an outer ring and a plurality of cross-members, each cross-member extending across the outer ring, and wherein the plurality of cross-members comprises the first bone contact portion and the outer ring comprises the second bone contact portion. 
     
     
         11 . The device of  claim 10 , wherein the deployed configuration further comprises a dome shape, and wherein the outer surface comprises a convex surface and the inner surface comprises a concave surface. 
     
     
         12 . The device of  claim 10 , wherein the deployed configuration further comprises an essentially flat shape. 
     
     
         13 . The device of  claim 10 , wherein the cross-members are aligned in a substantially parallel relationship, the undeployed configuration further comprising the outer ring and cross-members collapsed into an elongated configuration. 
     
     
         14 . The device of  claim 10 , each cross-member pivotably intersecting with another cross-member, wherein the undeployed configuration comprises the cross-members collapsed about the intersections to a nearly parallel relationship, and wherein a force exerted against an end of the collapsed cross-members moves the device into a deployed configuration. 
     
     
         15 . A system, comprising:
 a delivery cannula having a hollow lumen and percutaneously insertable into an interior of a bone;   an elongate member insertable through the lumen of the delivery cannula;   an implantable bone support device comprising an outer surface, an inner surface, a first bone contact portion, and a second bone contact portion, the device releasably attachable to a distal end of the elongate member in an undeployed configuration;   a deployment mechanism insertable through the lumen of the delivery cannula and actuatable to deploy the bone support device into a deployed configuration in the interior of the bone; and   a release mechanism adapted to release the bone support device from the elongate member.   
     
     
         16 . The system of  claim 15 ,
 wherein in the deployed configuration the first bone contact portion contacts at least a first portion of the bone from the interior of the bone, and the second bone contact portion contacts at least a second portion of the bone, and   wherein a load placed on the first portion of the bone is transferred through the device to the second portion of the bone.   
     
     
         17 . The system of  claim 15 , further comprising a barrier material attached to the bone support device adapted to prohibit substantially all flow of bone filler material from the inner surface to the outer surface of the device. 
     
     
         18 . The system of  claim 15 , wherein the deployment mechanism further comprises an expandable body adapted to be disposed inside the device and to expand the device into the deployed configuration. 
     
     
         19 . The system of  claim 15 , wherein the deployment mechanism further comprises a sheath covering the device in the undeployed configuration, the sheath movable to uncover the device for deployment into the deployed configuration. 
     
     
         20 . The system of  claim 15 , further comprising a radiopaque marking pattern in communication with at least one of the delivery cannula, the elongate member, and the bone support device. 
     
     
         21 . The system of  claim 15 , further comprising a plurality of the bone support devices, each of the devices positionable in the deployed configuration to support a separate portion of the bone. 
     
     
         22 . A kit, comprising:
 a delivery cannula having a hollow lumen and percutaneously insertable into an interior of a bone;   a elongate member insertable through the lumen of the delivery cannula; and   an implantable bone support device comprising an outer surface, an inner surface, a first bone contact portion, and a second bone contact portion, the device releasably attachable to a distal end of the elongate member in an undeployed configuration.   
     
     
         23 . The kit of  claim 22 ,
 wherein in the deployed configuration the first bone contact portion contacts at least the first portion of the bone from the interior of the bone, and the second bone contact portion contacts at least a second portion of the bone, and   wherein a load placed on the first portion of the bone is transferred through the device to the second portion of the bone.   
     
     
         24 . The kit of  claim 22 , further comprising a barrier material attached to the bone support device adapted to prohibit substantially all flow of bone filler material from the inner surface to the outer surface of the device. 
     
     
         25 . The kit of  claim 22 , further comprising a deployment mechanism insertable through the lumen of the delivery cannula and actuatable to deploy the bone support device into a deployed configuration in the interior of the bone. 
     
     
         26 . The kit of  claim 24 , further comprising a release mechanism adapted to release the bone support device from the elongate member. 
     
     
         27 . The kit of  claim 22 , further comprising a plurality of the bone support devices, each of the devices positionable in the deployed configuration to support a separate portion of the bone. 
     
     
         28 . A method, comprising:
 providing an implantable bone support device comprising an outer surface, an inner surface, a first bone contact portion, and a second bone contact portion, the device releasably attached in an undeployed configuration to a distal end of an elongate member;   percutaneously inserting the elongate member and attached bone support device into an interior of a bone;   deploying the bone support device into a deployed configuration;   contacting at least a first portion of the bone with the first bone contact portion;   contacting at least a second portion of the bone with the second bone contact portion such that a load placed on the first portion of the bone is transferred through the device to the second portion of the bone;   releasing the bone support device from the elongate member; and   removing the elongate member from the bone.   
     
     
         29 . The method of  claim 28 , the bone comprising a vertebral body, wherein contacting at least a first portion of the bone further comprises contacting an endplate with the first bone contact portion; and
 wherein contacting at least a second portion of the bone further comprises contacting a side wall of the vertebral body with the second bone contact portion.   
     
     
         30 . The method of  claim 28 , the bone comprising a vertebral body having a first endplate opposite a second endplate,
 wherein contacting at least a first portion of the bone further comprises contacting the first endplate with the first bone contact portion, and   wherein contacting at least a second portion of the bone further comprises contacting the second endplate with the second bone contact portion.   
     
     
         31 . The method of  claim 29 , further comprising inserting an expandable body into the bone interior, and expanding the expandable body to restore height to the vertebral body. 
     
     
         32 . The method of  claim 28 , further comprising injecting a bone filler material adjacent the inner surface of the bone support device. 
     
     
         33 . The method of  claim 28 , wherein the bone support device further comprises a barrier material attached to the device and adapted to prohibit substantially all flow of bone filler material from the inner surface to the outer surface of the device. 
     
     
         34 . The method of  claim 28 , wherein deploying the bone support device further comprises expanding the expandable body inside the bone support device. 
     
     
         35 . The method of  claim 28 ,
 wherein the bone support device further comprises a sheath covering the device in the undeployed configuration, and   wherein deploying the bone support device further comprises removing the sheath from the bone support device.   
     
     
         36 . The method of  claim 28 , the bone support device further comprising a central rod and a plurality of support members pivotably attached to an end of the central rod, wherein deploying the bone support device further comprises:
 actuating a first mechanism to pivot the central rod to an approximately 90 degree angle relative to a longitudinal axis of the elongate member; and   actuating a second mechanism to extend the support members outwardly from the central rod in a circular pattern,   wherein at least a portion of an outer surface of the outwardly extending support members comprises the first bone contact portion, and   wherein distal ends of the outwardly extending support members comprise the second bone contact portion.   
     
     
         37 . The method of  claim 28 , further comprising providing a plurality of the bone support devices, and deploying each of the plurality of the devices to support a separate portion of the bone.