| 摘要 |
PROBLEM TO BE SOLVED: To provide at least one dispensing device for cement cartridges for polymethylmethacrylate bone cement, the device capable of being manually operated.SOLUTION: A dispensing device 1 comprises at least one operating element 4 that can be manually operated, an adapter 44 for a cement cartridge, and a clamping rod 2, whereby at least one propulsion body 24 is arranged to be touching against the clamping rod, whereby the propulsion body comprises multiple elastic spring tongues. The spring tongues each comprises a cutting edge, whereby the spring tongues touch against the clamping rod by means of the cutting edge, and whereby the spring tongues of the propulsion body are inclined appropriately with respect to the clamping rod such that, upon a motion of the propulsion body in the propulsion direction of the clamping rod, the cutting edges of the propulsion body engage the clamping rod. A spring element 40 pushes with an elastic force, at least for part of the time, the propulsion body opposite to the propulsion direction of the clamping rod.SELECTED DRAWING: Figure 1 |
