Abstract
Clinical evaluation of small caliber biological grafts. Two types of new biological graft, that is heparinized canine and bioflow bovine, with either conventional suture anastomosis or laser anastomosis were evaluated clinically. These 41 grafts including composite grafts implanted in patients with occlusive arterial diseases and chronic renal failure were 89% patency rate for one year, 82% patency rate for three year postoperative follow-up. Especially the heparinized graft-anastomosed by laser was the best results with 100% patency without pathological anastomotic intimal hyperplasia. Therefore, These graft might be clinically useful for small caliber vascular graft.
