MATERIAL REMOVAL DEVICE HAVING IMPROVED MATERIAL CAPTURE EFFICIENCY AND METHODS OF USE

摘要

The present invention provides an improved atherectomy catheter having means for directing particles generated by a cutting element into a collection chamber. Methods of directing the cut material from a blood vessel lumen into a collection chamber are also provided.

主权项

1. An atherectomy catheter, comprising:
a body having an opening; a rotatable shaft coupled to the body; a cutting element coupled to the rotatable shaft, the cutting element having a cutting edge; a tissue collection chamber coupled to the body and positioned distal to the cutting element; and a paddle attached to the cutting element and configured to propel fluid distally in the tissue collection chamber.