Bone treatment systems and methods
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Accused Products
Abstract
The invention provides instruments and methods for prophylactic treatment of an osteoporotic vertebral body or for treating a vertebral compression fracture (VCF). In one exemplary method, a probe system uses a high speed rotational elastomeric cutter having an optional expandable abrasive surface for abrading or cutting at least one path or region within vertebral cancellous bone. Irrigation and aspiration sources are included in the probe system for removing abraded bone debris. In one embodiment, the high speed rotational abrader uses a tissue-selective abrading surface that abrades or cuts bone but does not cut soft tissue. In another embodiment, an expandable abrading surface allows the treatment of bone with low pressures to create paths or spaces without explosive expansion forces known in prior art balloon procedures that are designed to crush and compact cancellous bone in a vertebra. After the creation of a path or space, an in-situ hardenable bone cement volume is introduced into each path or space to support the vertebra.
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Citations
82 Claims
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1-53. -53. (canceled)
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54. A method of treating bone, comprising:
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introducing an abrading structure into an interior of a bone, the abrading structure moveable between a first shape with a first transverse sectional dimension and a second shape with a second increased cross-sectional dimension; and
rotating the abrading structure and moving the abrading structure toward the second shape thereby abrading bone. - View Dependent Claims (55, 56, 57, 58, 59, 60, 61, 62, 63)
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64. A method of treating bone, comprising:
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introducing an expandable structure into cancellous bone in an interior of a vertebra; and
expanding the expandable structure non-explosively from a non-expanded condition to an expanded condition thereby providing a space in the cancellous bone. - View Dependent Claims (65, 66, 67, 68, 69)
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70. A method of treating bone, comprising:
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introducing a fluid-expandable structure into cancellous bone in an interior of a vertebra; and
expanding the expandable structure from a non-expanded condition to an expanded condition with fluid pressure less than 100 psi to thereby provide a space in the cancellous bone. - View Dependent Claims (71, 72, 73)
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74. A method of treating bone, comprising:
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introducing a rotatable elastomeric abrading structure into an interior of a bone, wherein the elastomeric abrading structure is rotatable within a selected speed range that cuts bone and does not cut soft tissue; and
rotating the elastomeric abrading structure to cut at least one of cancellous bone and cortical bone. - View Dependent Claims (75, 76, 77)
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78. A bone treatment device, comprising:
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an elongated assembly having a working end, the elongated assembly configured for percutaneous introduction of the working end into a vertebra;
an elastomeric structure having an abrasive surface carried at the working end; and
a rotation mechanism operatively coupled to a drive member coupled to the elastomeric structure for rotating the elastomeric structure to abrade bone. - View Dependent Claims (79, 80, 81, 82)
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Specification