Patent ID: 6210031
Filing Date: 2001-04-03
Classification: A61B,A61F,B01F

Abstract:
A device for stirring and then extruding liquid bone cement, the device comprising:a) a cylindrical body having opposed ends and a hollow interior between the ends;b) a cylindrical piston positioned in one end of the body to close the end of the body while permitting relative rotation between the piston and the body and movement of the piston along the body, the piston including an off-center stirrer arm opening; andc) a stirrer in the body, the stirrer including an elongate arm having a first portion in the opening in the piston and a second portion extending away from the piston and along the interior of the body, wherein relative rotation of i) the body and ii) the piston and the stirrer stirs bone cement powder and bone cement liquid in the body to form liquid bone cement, and movement of the piston along the interior of the body extrudes liquid bone cement from the other end of the body and moves the piston along the length of the stirrer arm.