The connector consists of an annular rigid body conformed to an outer surface around a wall-opening of a hollow anatomical structure and holding means that keep the hollow structure adjoined internally to the annular body, wherein a union of the annular body with another annular body of another connector...http://www.google.se/patents/US6896687?utm_source=gb-gplus-sharePatent US6896687 - Connectors for hollow anatomical structures and methods of use
