Patent ID: 8182499

Claim:
A device for repeated semi-invasive abrasion of lesions on walls of a hollow organ, comprising: an outer stent having recesses through which the lesions can inwardly protrude, wherein the outer stent is configured to clamp against the walls of the hollow organ at a site of the lesions; and a magnetically-controllable cutting body guided within the outer stent and only negligibly narrowing an internal bore of said outer stent, the cutting body including cutting edges sliding on an inner side of the outer stent and being coupled magnetically to an external magnet system via which the cutting body is configured to turn about a stent axis in order to perform abrasion, the cutting body being a sleeve-shaped inner stent, wherein the inner stent is made at least partially of a magnetic material and is magnetized in a traverse direction of the stent axis, and the inner stent being completely mounted inside the outer stent so as to slide inside the outer stent so that upon movement of the inner stent lesions protruding into the inside of the outer stent can be cut off, whereby the outer stent includes at least one inwardly-extending limit stop preventing escape of the inner stent from the outer stent.