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 anelastic element(28, 52) pushes the at least one clamping body (26) of the at least onepropulsion body(24) from the direction of the adapter (44) onto an inclined surface or edgeof the cavityof the at least one propulsion body (24), whereby a spring element (40) pushesonto theat least one propulsion body (24) opposite to the propulsion direction of theclamping rod(2), at least one securing element (34) touches against the clamping rod (2),at least onesecuring element (34) touches against the clamping rod (2), whereby at leastonesphere-shaped or roller-shaped clamping body (36) is arranged in a cavity ofthe at leastone securing element (34), whereby an elastic element (38, 50) pushes the atleast oneclamping body (36) of the at least one securing element (34) from thedirection of theadapter (44) onto an inclined surface or edge of the cavity of the at leastone securingelement (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).
