Composite implant and method for treating bone abnormalities
First Claim
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1. A bone treatment method comprising the steps of:
- (a) introducing into a bone a hardenable bone cement that includes an electrically conductive filler in a sufficient amount to allow ohmic heating of the bone cement; and
(b) delivering Rf energy to the bone cement wherein ohmic heating of the filler accelerates curing of the bone cement.
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Abstract
This invention relates to implantable bone fill materials, systems and methods of treating bone abnormalities such as compression fractures of vertebrae, bone necrosis, bone tumors, cysts and the like. In an exemplary embodiment, the bone abnormality is accessed and a space is created by bone removal or compaction. An exemplary implant of the invention has a substantially fluid impermeable surface portion and an interior portion including an in-situ hardenable bone cement. The method of the invention includes applying energy to the fill material to accelerate polymerization and hardening of the material for supporting the bone.
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Citations
23 Claims
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1. A bone treatment method comprising the steps of:
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(a) introducing into a bone a hardenable bone cement that includes an electrically conductive filler in a sufficient amount to allow ohmic heating of the bone cement; and (b) delivering Rf energy to the bone cement wherein ohmic heating of the filler accelerates curing of the bone cement. - View Dependent Claims (2, 3, 4)
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5. A bone treatment method comprising the steps of:
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(a) introducing a plurality of deformable elements into bone wherein each element includes a composition responsive to energy delivery from a remote energy source; and (b) delivering energy to said composition wherein the response causes the elements to become non-deformable. - View Dependent Claims (6, 7, 8, 9, 10, 11, 16)
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- 12. An implant system for treating a bone abnormality comprising at least one implant having a first flexible state, the structure having a substantially impermeable surface portion and an interior portion that responds to energy delivery for altering the implant to a second inflexible state, and energy source for delivering energy to the at least one implant.
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20. A method of treating a bone a bone abnormality comprising:
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(a) providing an implant body comprising a plurality concentric shells of a flexible, porous material; (b) introducing the implant body into a bone in a collapsed condition; and (c) injecting an in-situ hardenable bone fill material into an interior of the implant body thereby expanding the implant body wherein the shells substantially prevent extravasion of the fill material. - View Dependent Claims (21, 22, 23)
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Specification