Patent ID: 8651334
Filing Date: 2014-02-18
Classification: A61C,B05C,B65D

Abstract:
1. A cartridge comprising at least one chamber for accommodating a substance, the chamber comprising a dispensing opening and a second opening; a piston that closes the second opening and can be displaced in the chamber and serves for dispensing the substance; and a piston rod mechanism for displacing the piston in the chamber, wherein the piston rod mechanism comprises at least one first piston rod that faces the piston, at least one second piston rod interconnectable with the first piston rod, and at least one spring element that is pretensioned between the first piston rod and the second piston rod, and wherein the piston rods can be transferred from a first dispensing stage, in which the first piston rod is at least sectionally arranged adjacent to the second piston rod, to a second dispensing stage, in which the first and second piston rods are arranged essentially behind one another and interconnected.