A method and device for endoscopic harvesting of blood vessels from a patient for use in subsequent procedures. The device having a two piece headpiece. A vessel to be removed is inserted into the headpiece and the top and bottom portions of the headpiece are alternatively extended in reciprocating fashion...http://www.google.se/patents/US20030065349?utm_source=gb-gplus-sharePatent US20030065349 - Vessel harvesting retractor with bilateral electrosurgical ligation
