A three-way urinary irrigation valve for use with a catheter is disclosed which is movable from a first position in which long term drainage takes place to a second position in which irrigating liquid can be introduced to a bladder, all while maintaining a closed system. The urinary irrigation valve...http://www.google.co.uk/patents/US3965910?utm_source=gb-gplus-sharePatent US3965910 - Urinary irrigation valve
