CANNULOTOME

摘要

Systems and methods for treating spinal stenosis include endoscopic access devices and bone removal devices used to perform a foraminotomy or other bone removal procedures. A bone removal device includes a cannulotome with an endoscopic imaging lumen. Optionally, an endoscope retaining device can be used to facilitate advancement of the endoscope through the cannulotome.

主权项

1. A system for spinal surgery comprising:
a tissue removal device comprising a proximal handle, an elongate shaft with a lumen terminating at a distal opening, the distal opening comprising a perimeter with a tapered protrusion, wherein the tapered protrusion comprises a proximal base and a distal cutting edge, and wherein at least one-quarter of the perimeter lies at or proximal to the base; and an endoscope retaining device comprising an elongate support structure configured to receive an endoscope, wherein the endoscope retaining device is configured to be coupled to the proximal handle of the tissue removal device in a predetermined radial orientation.