An Endoluminal Tissue Excision Catheter (ETEC) is described which is capable of excising obstructive tissue from a vessel in a living body. The ETEC system operates by first passing a guide wire through the vessel and beyond the obstructive tissue. The ETEC catheter is then advanced over the guide wire...http://www.google.de/patents/US5011490?utm_source=gb-gplus-sharePatent US5011490 - Endoluminal tissue excision catheter system and method
