Percutaneous tissue excision devices and methods

摘要

A device for percutaneously excising tissue. In an embodiment, the device comprises an outer tubular. In addition, the device comprises an inner tubular slidingly received within the outer tubular, wherein the inner tubular has a distal end including an upper member and a lower member. Further, the device includes an open position with the distal end fully extended from the outer tubular, and a closed position with the distal end disposed within the outer tubular, wherein the upper member is biased away from the lower member and is disposed at an open angle θO relative to the lower member when the device is in the opened position.

主权项

1. A method for reducing a spinal stenosis of a patient, comprising:
positioning a distal end of a first instrument in an interlaminar space and external to an epidural space by passing the distal end of the first instrument in a generally anterior direction between adjacent vertebrae of the patient, wherein the first instrument has a lumen with a distal aperture; advancing a distal portion of a second instrument into the lumen of the first instrument to extend at least part of the distal portion beyond the distal aperture and external to the epidural space; and moving the distal portion relative to the patient to separate a tissue from the surrounding tissue.