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Instruments and methods for reducing and stabilizing bone fractures are presented, which include providing a cavity in bone, such as a vertebra, wherein the cavity is proximate to an endplate of the bone, such as a vertebra endplate, and wherein the cavity extends radially from a passage into the ca

Instruments and methods for reducing and stabilizing bone fractures are presented, which include providing a cavity in bone, such as a vertebra, wherein the cavity is proximate to an endplate of the bone, such as a vertebra endplate, and wherein the cavity extends radially from a passage into the cavity. The methods further include providing a device, such as an inflatable device, into the cavity and manipulating the device for expansion. The cavity may be expanded thereby reducing and/or stabilizing the fracture. The fracture may be further reduced and/or stabilized by adding a material into the cavity.

대표청구항 ▼

1. A method for treating bone comprising the steps of: forming a passage in a vertebra;providing a tissue cavitation device,inserting the tissue cavitation device into the passage in the vertebra;forming a cavity with the tissue cavitation device along a central portion of the vertebra, wherein the

1. A method for treating bone comprising the steps of: forming a passage in a vertebra;providing a tissue cavitation device,inserting the tissue cavitation device into the passage in the vertebra;forming a cavity with the tissue cavitation device along a central portion of the vertebra, wherein the cavity extends proximate to an endplate of a vertebral body, wherein the cavity is proximate a first region and a second region of the vertebral body, wherein the first region is a superior endplate and the second region is an inferior endplate;providing an inflatable device configured for expansion with a working fluid;inserting the inflatable device into the cavity that is the central portion of the vertebra; andexpanding the inflatable device to expand the cavity. 2. The method of claim 1, wherein the cavity is proximate a first region of the vertebral body endplate and separated from the first region by a layer of cancellous bone. 3. The method of claim 1, wherein the cavity has a boundary, a portion of which is cortical bone. 4. The method of claim 1, wherein the cavity has a boundary, a portion of which is cancellous bone. 5. The method of claim 1, wherein forming the cavity comprises a method of separating bone, the method of separating bone selected from the group consisting of shearing, cutting, scraping, and combinations thereof. 6. The method of claim 1, wherein the inflatable device is a balloon. 7. The method of claim 1, wherein the inflatable device is substantially non-compliant. 8. The method of claim 1, wherein the inflatable device is semi-compliant. 9. The method of claim 1, wherein expanding the inflatable device manipulates cortical bone to reduce a fracture. 10. The method of claim 1, further comprising filling the cavity with a material, wherein the material is a filling material selected from the group consisting of implant material, in-situ curable material, in-situ hardenable material, permanent material, resorbable material, penetrating material, and combinations thereof. 11. The method of claim 1, wherein the cavity is substantially axisymmetric. 12. The method of claim 1, wherein the cavity is substantially non-axisymmetric. 13. The method of claim 1, wherein a working end of the tissue cavitation device is transformable between a first shape for entry into the passage and a second shape for forming the cavity. 14. The method of claim 1, wherein the tissue cavitation device comprises: a shaft having a diameter and a longitudinal axis; anda flexible cutting element associated with the shaft, wherein the flexible cutting element is configured to assume a first shape for insertion and configured to assume a second shape suitable for forming the cavity that has a diameter greater than a diameter of the shaft when the shaft is rotated about the longitudinal axis of the shaft. 15. The method of claim 1, wherein the cavity is formed with rotational actuation of the tissue cavitation device. 16. The method of claim 1, wherein forming the passage in the vertebra precedes forming the cavity. 17. The method of claim 1, wherein forming the passage in the vertebra occurs substantially concomitantly with forming the cavity. 18. The method of claim 1, wherein expanding the inflatable device provides a distraction force.