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US 2016/0095503 A1Published application
Cannulotome
AssigneeSpine View, Inc.
InventorsJohn Davis, John To, Lex P. Jansen, Stewart Kume, Wendy Twardzik
Life of this patent
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Abstract
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.
Claims52
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.
An endoscope stabilization system comprising:
- an endoscope;
- and
- an endoscope retaining device comprising a proximal handle and an elongate support structure attached to the handle, wherein the support structure comprises an elongate structure with retention protrusions configured to releasably secure a distal portion of the endoscope and one or more tubular structures along a side of the elongate structure configured for transporting fluid along the endoscope retaining device.
A method for spinal surgery comprising:
- inserting an introducer cannula into a target spine region;
- advancing an endoscope assembly comprising an endoscope coupled to an endoscope retaining device through the lumen of the introducer cannula, wherein the endoscope retaining device comprises a channel therethrough;
- withdrawing the endoscope assembly;
- advancing a cannulotome with a proximal handle, an elongate shaft with a lumen therethrough, and a tapered cutter at the distal end of the shaft through the lumen of the introducer cannula;
- applying force to the cannulotome to remove bony or calcified tissue while simultaneously visualizing the removal of the tissue through a lumen of the cannulotome;
- drawing the tissue up through the lumen of the cannulotome shaft;
- and
- withdrawing the cannulotome.
5 more elements
A method for spinal surgery comprising:
- inserting a cannulotome with a proximal handle, an elongate shaft with a lumen therethrough, and a tapered cutter at the distal end of the shaft through an introducer cannula;
- advancing an endoscope assembly comprising an endoscope coupled to an endoscope retaining device through the lumen of the cannulotome, wherein the endoscope
- retaining device comprises a channel therethrough;
- advancing the introducer cannula to a target spine region;
- and
- applying force to the cannulotome to remove bony or calcified tissue while simultaneously visualizing the removal of the tissue through a lumen of the cannulotome.
3 more elements
Dependencies are inferred from the claim text.