A dental spray handpiece, consisting of a gripping sleeve possessing a connection for media at one end thereof and a media discharge at its other end, and in which sleeve there are arranged media conduits leading from the media connection to the media discharge. A tubular member or cannula for further...http://www.google.fr/patents/US5082443?utm_source=gb-gplus-shareBrevet US5082443 - Dental spray handpiece
