Patent ID: 6786723
Filing Date: 2004-09-07
Classification: A61C

Abstract:
A medical or dental-medical treatment instrument comprising:a media line for water or spray, extending from a rearward end to a forward end region of the treatment instrument; and a filter cartridge arranged in the treatment instrument in the line section of the media line, wherein the filter cartridge is provided in two-part form, including an exchangeable tube-shaped cartridge housing, and a filter element for the media line arranged in the cartridge housing, wherein the filter element has the form of a filter sleeve including a sleeve wall and which is closed at one end by an end wall and at the other end stands up, in the longitudinal direction of the filter cartridge, from a filter carrier in the form of an annular flange which has a through channel connected with the inner space of the filter sleeve and is either connected with a circumferential wall of the cartridge housing or inserted therein, wherein the direction of passage of the medium is directed transversely to the sleeve wall, and, wherein the filter cartridge stands under a laterally outwardly directed spring tension, which upon its dismounting displaces or tilts the filter cartridge outwardly upon pulling apart parts of the instrument.