Expandable preformed structures for deployment in interior body regions
First Claim
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1. A device for compacting cancellous bone comprising a wall made from an elastomer material and including a region preformed with a normally expanded shape outside bone.
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Abstract
An expandable structure made from an elastomer material is preformed to a desired geometry by exposure to heat and pressure. The structure undergoes controlled expansion and further distention in cancellous bone, with controlled deformation and without stress failure.
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Citations
79 Claims
- 1. A device for compacting cancellous bone comprising a wall made from an elastomer material and including a region preformed with a normally expanded shape outside bone.
- 17. A device for compacting cancellous bone comprising a body having a first diameter, and an expandable region formed from the body with a shape having, outside bone, a normally expanded diameter greater than the first diameter, and a further expanded shape having a diameter, outside bone, greater than the normally expanded diameter, the further expanded shape inside bone substantially corresponding with the further expanded shape outside bone.
- 23. A device for compacting cancellous bone comprising a wall including a region preformed to possess a normally expanded shape outside bone, which is further expandable to an enlarged shape outside bone at substantially constant pressure.
- 29. A device for compacting cancellous bone comprising an expandable wall including material that is resistant to abrasion by cancellous bone.
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30. A device for compacting cancellous bone comprising an expandable wall and a material covering the expandable wall that is resistant to abrasion by cancellous bone.
- 37. A device for compacting cancellous bone comprising a tube made of an elastomer material, the tube including a first section having a first diameter and a second section preformed by heat and pressure to a second normally expanded diameter, which is greater than the first diameter, the second section having a further expanded shape with a third diameter greater than the second normally expanded diameter.
- 54. A device for insertion into a vertebral body having a top plate and a bottom plate, the device including an expandable wall that, when expanded inside the vertebral body, moves at least one of the top and bottom plates, the improvement comprising the expandable wall being made from an elastomer material and including a region preformed with a normally expanded shape outside bone.
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64. A method for compacting cancellous bone comprising the steps of
introducing into bone a device including an expandable wall made from an elastomer material and including a region preformed with a normally expanded shape outside bone, and expanding the wall inside bone from the normally expanded shape to a further expanded shape to compact cancellous bone and form a cavity.
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73. A method for treating a vertebral body having a top plate and a bottom plate comprising the steps of
inserting into the vertebral body between the top and bottom plates a device comprising an expandable wall made from an elastomer material and including a region preformed with a normally expanded shape outside bone, and expanding the wall inside bone from the normally expanded shape to a further expanded shape to move at least one of the top and bottom plates.
- 74. A method for manufacturing a device for compacting cancellous bone comprising the step of applying heat and pressure to a tube of an elastomer material to form a region having a normally expanded shape outside bone, which is expandable to a further expanded shape outside bone having a diameter greater than the normally expanded shape.
Specification