Flexible tissue rasp
First Claim
1. A method for modifying tissue in a spine of a patient to treat or alleviate spinal stenosis, the method comprising:
- advancing a guidewire through an epidural space of the patient'"'"'s spine and bending the guidewire around the target tissue in the spine;
coupling the guidewire to a tissue modification device having an elongate body with a rigid section at the proximal end region and a flexible abrasive surface at the distal end region;
positioning the tissue modification device so that the tissue modification device forms a bend against the target tissue and the abrasive surface of the tissue modification device faces target tissue and a non-abrasive surface of the tissue modification device faces non-target tissue;
urging the abrasive surface of the tissue modification device against the target tissue by pulling on the distal end region of the tissue modification device and pulling on the proximal end region of the tissue modification device; and
translating the tissue modification device proximally and distally by moving a proximal handle in an opposite direction from a distal handle while urging the abrasive surface of the tissue modification device against the target tissue to abrade the target tissue with the abrasive surface.
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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.
630 Citations
34 Claims
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1. A method for modifying tissue in a spine of a patient to treat or alleviate spinal stenosis, the method comprising:
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advancing a guidewire through an epidural space of the patient'"'"'s spine and bending the guidewire around the target tissue in the spine; coupling the guidewire to a tissue modification device having an elongate body with a rigid section at the proximal end region and a flexible abrasive surface at the distal end region; positioning the tissue modification device so that the tissue modification device forms a bend against the target tissue and the abrasive surface of the tissue modification device faces target tissue and a non-abrasive surface of the tissue modification device faces non-target tissue; urging the abrasive surface of the tissue modification device against the target tissue by pulling on the distal end region of the tissue modification device and pulling on the proximal end region of the tissue modification device; and translating the tissue modification device proximally and distally by moving a proximal handle in an opposite direction from a distal handle while urging the abrasive surface of the tissue modification device against the target tissue to abrade the target tissue with the abrasive surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for modifying tissue in a spine of a patient to treat or alleviate spinal stenosis, the method comprising:
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advancing an introducer sheath into an epidural space of the patient'"'"'s spine; advancing a guide device through the introducer sheath and between target tissue and non-target tissue in the spine; advancing a guidewire through the guide device and bending the guidewire around the target tissue so that the distal portion extends out of the patient'"'"'s back; coupling the guidewire to, a tissue modification device having an elongate body with a rigid section at the proximal end region and a flexible abrasive surface at the distal end region; positioning the tissue modification device so that the tissue modification device forms a bend against the target tissue and an abrasive surface of the tissue modification device faces target tissue and a non-abrasive surface of the tissue modification device faces non-target tissue; urging the tissue modification device against the target tissue by pulling on the guidewire and by separately pulling on the proximal portion of the tissue modification device; and translating the tissue modification device proximally and distally by moving a proximal handle in an opposite direction from a distal handle while urging the abrasive surface of the tissue modification device against the target tissue to abrade the target tissue with the abrasive surface. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A method for modifying tissue in a spine of a patient to treat or alleviate spinal stenosis, the method comprising:
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advancing a guidewire through an epidural space of the patient'"'"'s spine and bending the guidewire around the target tissue in the spine; coupling the guidewire to, a tissue modification device having an elongate body with a rigid section at the proximal end region and a flexible abrasive surface at the distal end region; positioning the tissue modification device so that the tissue modification device forms a bend against the target tissue and the abrasive surface of the tissue modification device faces target tissue; coupling a distal handle to the guidewire; urging the abrasive surface of the tissue modification device against the target tissue by pulling on the distal handle on the guidewire and pulling on a proximal handle on the tissue modification device; and translating the tissue modification device proximally and distally by moving the proximal handle in an opposite direction from the distal handle while urging the abrasive surface of the tissue modification device against the target tissue to abrade the target tissue with the abrasive surface.
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34. A method for modifying tissue in a spine of a patient to treat or alleviate spinal stenosis, the method comprising:
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advancing a tissue modification device into the spine, the tissue modification device having an elongate body with a rigid section at the proximal end region and a flexible distal end region with an abrasive surface; positioning the tissue modification device against target tissue so that the flexible distal end region is bent by the target tissue to curve at least partially around the target tissue with the abrasive surface facing the target tissue and a non-abrasive surface facing non-target tissue; urging the abrasive surface of the tissue modification device against the target tissue by pulling on the distal end region of the tissue modification device and pulling on the proximal end region of the tissue modification device; and translating the tissue modification device proximally and distally by moving a proximal handle in an opposite direction from a distal handle while urging the abrasive surface of the tissue modification device against the target tissue to abrade the target tissue with the abrasive surface.
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Specification