Veins are removed using a pull catheter introduced over a guidewire which extends between first and second percutaneous access points. Optionally, a side branch management tool including an excision device and/or a viewing scope can be advanced over the same guidewire in the direction opposite to that...http://www.google.de/patents/US20040049208?utm_source=gb-gplus-sharePatent US20040049208 - Methods and systems for vein harvesting and fistula creation
