Minimally invasive techniques are utilized in bypass grafting to implant an end portion of a graft in the body of a patent by (i) advancing a medical instrument within a circulatory system of the body, (ii) guiding a distal end of the medical instrument out of the circulatory system through an opening...http://www.google.es/patents/US7753946?utm_source=gb-gplus-sharePatente US7753946 - Bypass grafting system and apparatus
