The invention relates to a dispensing device (1) for cement cartridges forpolymethylmethacrylate bone cements comprising at least one manuallyactuatablerocker lever (4), an adapter (44) for a cement cartridge, a clamping rod (2)that can bepropelled in the direction of the adapter (44), whereby at least onepropulsion body (24)is arranged and is shiftable in axial direction with respect to the axis ofthe clamping rod(2), whereby at least one sphere-shaped or roller-shaped clamping body (26) isarranged in a cavity of the at least one propulsion body (24), whereby anelasticelement (28) pushes the at least one clamping body (26) of the at least onepropulsionbody (24) from the direction of the adapter (44) onto an inclined surface oredge of thecavity of the at least one propulsion body (24), whereby a spring element (40)pushesonto the at least one propulsion body (24) opposite to the propulsiondirection of theclamping rod (2), at least one securing element (34) touches against theclamping rod(2), at least one securing element (34) touches against the clamping rod (2),whereby atleast one sphere-shaped or roller-shaped clamping body (36) is arranged in acavity ofthe at least one securing element (34), whereby an elastic element (38) pushesthe atleast one clamping body (36) of the at least one securing element (34) fromthedirection of the adapter (44) onto an inclined surface or edge of the cavityof the at leastone securing element (34).The invention also relates to a method for propelling a clamping rod (2) witha rockerlever (4), in which at least one propulsion body (24) touching against theclamping rod(2) is moved in a first axial direction of the clamping rod (2) by a manualforce acting onthe rocker lever (4).
