Abstract
Since the first percutaneous transluminal coronary angioplasty in 1977, there has been rapid improvement in device technology. Guides, and then perfusion balloons, were developed. To overcome problems, directional coronary atherectomy (DCA), transluminal extraction-endarterectomy catheters (TEC), high speed rotational coronary atherectomy, stents, and most recently, the cutting balloon, have been introduced.
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