Patent ID: 7377912

Claim:
An administering apparatus, comprising: a) a front casing section comprising a reservoir for a product which can be delivered and a first latching element; b) a piston which is accommodated in said reservoir such that it can shift in an advancing direction towards a reservoir outlet to deliver product; c) a piston rod; d) a rear casing section comprising a second latching element which engages with said first latching element to detachably connect the front and rear casing sections; e) a drive element which is mounted by said rear casing section such that it can move in and counter to the advancing direction and which acts on said piston rod during a delivery movement in the advancing direction to move said piston in the advancing direction; f) and a latching block coupled to said drive element, said latching block comprising a blocking element wherein the blocking element comprises an axially extending body comprising a first end and a second end, the first end comprising a stay projecting at about right angles from the body, the second end comprising a fork around an axial recess, said fork comprising two blocking tongues, and two indentation recesses opposite each other on either side of the second end, wherein the blocking element prevents detachment of the second latching element from the first latching element during delivery of the product until the drive element reaches a releasing position wherein the longitudinally sliding recess is aligned to permit movement of the second latching element into the longitudinally sliding recess to enable detachment of the second latching element from the first latching element.