Patent ID: 7191917

Claim:
A metering device comprising: a metering element having a supply reservoir, open on one side, for holding a substance to be metered; a plunger that is axially displaceable and reversibly seals an opening of the supply reservoir, the plunger having at least one centered metering orifice for metering the substance deposited in the supply reservoir, wherein at least one of the supply reservoir and the plunger has an accommodation as a contact point for a mechanical gripping device; a piston barrel to which is joined the plunger an exchangeable metering needle joined to the end of the piston barrel facing away from the plunger; and a Luer lock closure by which the piston barrel is joined to the metering needle; wherein: the plunger includes a metering line for metering the deposited substance, and the piston barrel includes an end facing away from the plunger and at which the accommodation is implemented.