Dispensing device for a dental material

摘要

A dispensing device for a dental material includes a cartridge having an outlet nozzle which forms a passageway for the dental material. The dispensing device further includes a closure which is placeable on the outlet nozzle for sealing the cartridge. The closure includes a pin for extending into the passageway, and is further adapted to seal with an outer surface of the outlet nozzle. The dispensing device is further adapted such that the pin is displaceable from the passageway by dental material dispensed from the cartridge, where the displacement causes the closure to release from the outlet nozzle. The invention may provide for relatively easy operation of the dental dispensing device.

主权项

1. A dispensing device for a dental material, comprising:
a cartridge for containing the dental material, the cartridge having an outlet nozzle with an outer surface and an inner surface, the inner surface forming a passageway for the dental material; and a closure, not being formed from the dental material, having a cap and a pin, the cap having a front wall from which a circumferential side wall extends, the circumferential side wall having an inner surface defining a conical passageway that generally corresponds to a negative shape of an outer surface of the outlet nozzle, and where the pin protrudes generally in the same direction as the side wall from the front wall over generally the same length, the closure forming a seal only between the outer surface of the cartridge and the circumferential side wall of the closure and the pin extending into the passageway of the cartridge with a loose fit to allow the closure to move relative to the outlet nozzle under pressure from the dental material dispensed from the cartridge.