| 摘要 |
By providing a single housing comprising a mixing chamber integrally combined with a delivery chamber or tube, a unitary, fully integrated, bone cement mixing and dispensing system is attained which eliminates user exposure or handling of the mixed bone cement. In the present invention, the two chambers of the integrated system are movable between two alternate positions, a first position wherein each chamber is sealed from the other, and a second position wherein the two chambers in direct communication with each other. In this way the mixing chamber is operated independently from the chamber for preparing the bone cement and, once prepared, is easily transferred from the mixing chamber through the delivery chamber. A dual drive assembly is provided such that it may an independently rotate a mixing blade in a first speed and direction, and independently drive the speed and rotation of a feed controlling element at a second speed and direction. The rate of speed or rotation of the mixing portion is thereby easily controlled to any desired level, relative to the rotational speed of movement of the controlling portion in the delivery chamber.
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