Bone cement mixing apparatus with gearing arrangement for driving a mixing blade

摘要

A bone cement mixing device (10) has a canister (12) which is modular in design and constructed from a transparent material. The mixing device has a mixing head assembly having a crank (40) which is operatively coupled to a mixing blade via a gear train. The gear train is configured to drive the mixing blade in a reciprocating manner including the varying of the angular velocity, direction of travel, and angular distance of travel of the blade while the crank is rotated at a constant velocity and direction. The mixing blade has a fluid passage defined therein which allows the liquid cement component to be delivered at various locations within the mixing chamber of the canister.