| 摘要 |
CEMENT CARTRIDGE DISPENSING DEVICE HAVING ROLLING CLAMPING BODIES The invention relates to a dispensing device (1) for cement cartridges for polymethylmethacrylate bone cements comprising at least one manually actuatable rocker lever (4), an adapter (44) for a cement cartridge, a clamping rod (2) that can be propelled in the direction of the adapter (44), whereby at least one propulsion body (24) is arranged and is shiftable in axial direction with respect to the axis of the clamping rod (2), whereby at least one sphere-shaped or roller-shaped clamping body (26) is arranged in a cavity of the at least one propulsion body (24), whereby an elastic element (28, 52) pushes the at least one clamping body (26) of the at least one propulsion body (24) from the direction of the adapter (44) onto an inclined surface or edge of the cavity of the at least one propulsion body (24), whereby a spring element (40) pushes onto the at least one propulsion body (24) opposite to the propulsion direction of the clamping rod (2), at least one securing element (34) touches against the clamping rod (2), at least one securing element (34) touches against the clamping rod (2), whereby at least one sphere-shaped or roller-shaped clamping body (36) is arranged in a cavity of the at least one securing element (34), whereby an elastic element (38, 50) pushes the at least one clamping body (36) of the at least one securing element (34) from the direction of the adapter (44) onto an inclined surface or edge of the cavity of the at least one securing element (34). The invention also relates to a method for propelling a clamping rod (2) with a rocker lever (4), in which at least one propulsion body (24) touching against the clamping rod (2) is moved in a first axial direction of the clamping rod (2) by a manual force acting on the rocker lever (4). 4 42 6 40 28 26 24 8 2 46 1 Figure 1 |
