The external ring method of microvenous anastomosis: a new experimental concept

A new method of microvenous anastomosis has been devised using a rigid ring around the anastomotic circumference. Only four sutures are used in the anastomosis and these are tied around the ring so as to stretch open the anastomotic site. The method has been tested in experimental rats and compared with the standard technique of anastomosis. The results and possible clinical implications of this method are discussed.