Flexible tissue rasp
First Claim
1. A device for modifying tissue in a spine of a patient to treat or alleviate spinal stenosis, the device comprising:
- an elongate, at least partially flexible body having a proximal portion and a distal portion, wherein a region at the proximal end of the elongate body is an elongate rigid section;
at least one abrasive surface disposed along a portion of one side of the at least partially flexible elongate body;
at least one shield having a non-abrasive surface located adjacent the at least one abrasive surface so as to face non-target tissue when the abrasive surface is positioned to face target tissue when the elongate body is positioned within the shield, wherein the shield is configured to be delivered between target and non-target tissues with the abrasive surface and is configured to be removably coupled with the elongate body to remain between target and non-target tissues after removing the abrasive surface from the shield;
wherein the shield member comprises at least one window along its length, through which the at least one abrasive surface may be exposed to modify target tissue;
at least one proximal tensioning member coupled with the elongate body at or near the proximal portion for facilitating application of tensioning force to, and translation of, the elongate body; and
at least one distal tensioning member, coupled with the elongate body at or near the distal portion and not directly connected to the proximal tensioning member, for facilitating application of tensioning force to, and translation of, the elongate body.
7 Assignments
0 Petitions
Accused Products
Abstract
Methods and devices are described for modifying tissue in a spine of a patient to treat or alleviate spinal stenosis. In one embodiment, a method may include: advancing at least a distal portion of an elongate tissue modification device into an epidural space and between target tissue and non-target tissue in the spine; positioning the tissue modification device so that at least one abrasive surface of the device faces target tissue and at least one non-abrasive surface faces non-target tissue; applying tensioning force at or near separate distal and proximal portions of the tissue modification device; and translating the tissue modification device back and forth while maintaining at least some tensioning force to abrade at least a portion of the target tissue with the at least one abrasive surface. Unwanted damage to the non-target tissue may be prevented via the at least one non-abrasive surface.
698 Citations
14 Claims
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1. A device for modifying tissue in a spine of a patient to treat or alleviate spinal stenosis, the device comprising:
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an elongate, at least partially flexible body having a proximal portion and a distal portion, wherein a region at the proximal end of the elongate body is an elongate rigid section; at least one abrasive surface disposed along a portion of one side of the at least partially flexible elongate body; at least one shield having a non-abrasive surface located adjacent the at least one abrasive surface so as to face non-target tissue when the abrasive surface is positioned to face target tissue when the elongate body is positioned within the shield, wherein the shield is configured to be delivered between target and non-target tissues with the abrasive surface and is configured to be removably coupled with the elongate body to remain between target and non-target tissues after removing the abrasive surface from the shield; wherein the shield member comprises at least one window along its length, through which the at least one abrasive surface may be exposed to modify target tissue; at least one proximal tensioning member coupled with the elongate body at or near the proximal portion for facilitating application of tensioning force to, and translation of, the elongate body; and at least one distal tensioning member, coupled with the elongate body at or near the distal portion and not directly connected to the proximal tensioning member, for facilitating application of tensioning force to, and translation of, the elongate body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification