Patent ID: 6116902
Filing Date: 2000-09-12
Classification: A61C,B05C

Abstract:
Manually operated ejector device for receiving a cartridge which is loaded with viscous material and has a cylindrical portion at whose front end an outlet tip is disposed and at whose back end an annular rim and an opening blocked by a plunger movable within the cartridge are provided, the ejector device having an elongated barrel with an open front end and a back end, a piston disposed for longitudinal displacement in the barrel, a handle disposed at the back end of the barrel, and a lever which can be moved relative to the barrel and the handle and is connected with the piston in order to move the piston within the barrel, the front end of the barrel having a lateral insertion opening to receive at least a portion of the cylindrical part of the cartridge, the back end of the insertion opening forming a chamber with a diameter appropriate for receiving the rim and the chamber having at its front end facing the open end of the barrel a concentric abutment surface for the rim of the cartridge, wherein at the back end of the chamber (6) opposite the abutment surface (28) a lock (13) is disposed for displacement in the lengthwise direction of the chamber independently of the piston (2) and is biased by a spring (14) toward the chamber (6), and that the lock (13) has at the end of the lock facing the chamber at least one contact surface (16) which is intended for contact with the back end of the cartridge (15).