The present invention provides a method for exchanging catheters while containing emboli within a blood vessel such as a saphenous vein graft, coronary artery, carotid artery, or other similar vessels. A guidewire is inserted through the vasculature of a patient until it reaches a desired treatment site....http://www.google.es/patents/US6986778?utm_source=gb-gplus-sharePatente US6986778 - Exchange method for emboli containment
