Spinal ligament modification devices
First Claim
1. A tissue excision system for percutaneous surgery, comprising:
- a cannula comprising a tissue-penetrating member having a distal end defining an aperture on one side thereof;
an occluding member slidably received on or in said cannula and closing said aperture when said occluding member is adjacent said cannula distal end;
a tissue-engaging device received within said cannula and adapted to engage adjacent tissue via said aperture; and
cutting means for resecting a section of said engaged tissue.
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Accused Products
Abstract
A method for treating stenosis in a spine comprises percutaneously accessing the epidural space in a stenotic region of interest, compressing the thecal sac in the region of interest to form a safety zonem, inserting a tissue removal tool into tissue in the working zone, using the tool to percutaneously reduce the stenosis; and utilizing imaging to visualize the position of the tool during at least a part of the reduction step. A tissue excision system for performing percutaneous surgery, comprises a cannula comprising a tissue-penetrating member having a distal end defining an aperture on one side thereof, an occluding member slidably received on or in the cannula and closing the aperture when the occluding member is adjacent the cannula distal end, means for engaging adjacent tissue via the aperture, and cutting means for resecting a section of the engaged tissue.
217 Citations
20 Claims
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1. A tissue excision system for percutaneous surgery, comprising:
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a cannula comprising a tissue-penetrating member having a distal end defining an aperture on one side thereof;
an occluding member slidably received on or in said cannula and closing said aperture when said occluding member is adjacent said cannula distal end;
a tissue-engaging device received within said cannula and adapted to engage adjacent tissue via said aperture; and
cutting means for resecting a section of said engaged tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A tissue excision system for percutaneous surgery, comprising:
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a cannula comprising a tissue-penetrating member having a distal end defining an aperture on one side thereof;
an occluding member slidably received on or in said cannula and closing said aperture when said occluding member is adjacent said cannula distal end;
a tissue-engaging device received within said cannula and adapted to engage adjacent tissue via said aperture;
cutting means for resecting a section of said engaged tissue;
means for retrieving said resected tissue from said distal tool end; and
a tissue-removal system for removing tissue from said retrieving means.
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20. The percutaneous tool according to claim 28 wherein the first tissue-engaging device comprises a resilient material and is configured such that it is elastically deformed when it is constrained within said cannula.
Specification