DEVICE FOR DISPENSING A SUBSTANCE

摘要

The dispensing device (1) comprises a housing (10) having a chamber (11) for accommodating the compressible container, the chamber (11) having a vertically- extending peripheral wall (12) and an opening(13) at the top side for placing the container into the chamber (11) from above. Furthermore, the device (1) comprises a counter-supporting member (15) and a displaceable pressure-exerting element (18). The pressure-exerting element can be driven by drive means (20), such that the substance is dispensed from the container through compression of the container between the counter- supporting member (15) and the pressure-exerting element (18). The pressure-exerting element (18) comprises a piston body (181) having lips (182) hingedly arranged along the periphery of the piston body. The end of each of the lips extends beyond the edge of the piston body and abuts the peripheral wall (12) of the chamber (11).