FIELD: medicine.
SUBSTANCE: invention refers to medicine. An atherectomy catheter comprises an inner drive rod rotating a distal rotary tissue drill with a spiral cutting surface. The drill enables cutting the catheter through a chronic full clog. Additionally, the catheter has a distal cutting element and a collection chamber. The cutting element is rotated by an outer drive rod for cut the material from a vascular wall on the treated portion, as the catheter is pushed in the distal direction through the treated portion. The collection chamber is arranged in the proximal direction in relation to the cutting element and the rotary tissue drill. The catheter can comprise aids for feeding the material cut from the treated portion into the collection chamber, aids for destructing coarse parts of the material, which can block or clog the collection chamber, and aids for advancing the collected material from the treated portion to a proximal opening created in the presented atherectomy catheter.
EFFECT: structural improvement.
12 cl, 25 dwg
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