Devices, and methods for non-suture end-to-end and end-to-side anastomosis of tubular tissue members employ tubular connection members having clip retaining elements comprising annular grooves or flanges in the connection members; and spring clips which comprise a ring-shaped body with separable opposed...http://www.google.com.au/patents/US4873975?utm_source=gb-gplus-sharePatent US4873975 - Anastomosis device and method
