Bone treatment systems and methods for introducing an abrading structure to abrade bone
First Claim
1. A method of treating bone, comprising:
- 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, is a generally solid cylindrical structure and has a channel therethrough for aspirating debris from or delivering a fluid to the bone;
rotating the elastomeric abrading structure to cut at least one of cancellous bone and cortical bone;
increasing an outer diameter of the generally solid cylindrical structure from a first generally cylindrical shape to a second generally cylindrical shape;
rotating the elastomeric abrading structure to cut through a plurality of locations in a cortical wall of the bone to create a weakened region, wherein the elastomeric abrading structure does not cut soft tissue adjacent the cortical wall and wherein cutting through the cortical wall is performed from the interior of the bone to the exterior of the bone; and
introducing a bone fill material into the bone and thereby elevating a vertebral endplate.
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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.
261 Citations
11 Claims
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1. 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, is a generally solid cylindrical structure and has a channel therethrough for aspirating debris from or delivering a fluid to the bone;
rotating the elastomeric abrading structure to cut at least one of cancellous bone and cortical bone;increasing an outer diameter of the generally solid cylindrical structure from a first generally cylindrical shape to a second generally cylindrical shape; rotating the elastomeric abrading structure to cut through a plurality of locations in a cortical wall of the bone to create a weakened region, wherein the elastomeric abrading structure does not cut soft tissue adjacent the cortical wall and wherein cutting through the cortical wall is performed from the interior of the bone to the exterior of the bone; and introducing a bone fill material into the bone and thereby elevating a vertebral endplate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification