Device and method for minimally invasive spinal intervention

摘要

The invention proposes a device for minimally invasive intervention in the skeletal region, in particular on the spinal column, having at least a cannula with a distal end generally bevelled in shape relative to a symmetrical axis of the cutting tool and an optical probe (endoscope) for insertion through the cavity of the cannula. The device is further characterized in that the cannula takes the form of a hollow cutting tool, in which the most distal region of the distal end comprises a cutting edge, which is incorporated into the edge of the wall of the cutting tool.

主权项

1. A device for endoscopic intervention in the skeletal region, in particular on the spinal column, the device comprising:
a cutting tool comprising an element in the form of a hollow cannula, said hollow cannula comprising a cutting edge at a distal end thereof, wherein said distal end forms only one face defining an opening, said one face and said opening being generally bevelled in shape relative to a longitudinal axis of symmetry of the element, said cannula comprising a cavity, said opening extending over an entire cross section of said cavity, said cutting edge extending predominantly in a direction perpendicular to said longitudinal axis of said element; an optical probe (endoscope) moveably mounted in said cavity for insertion through the cavity of the cannula and out of said opening at said distal end; a means for moving the cutting tool relative to said optical probe, said means for moving the cutting tool brings about a cyclic movement in the longitudinal direction of the cutting tool.