Patent ID: 8241295

Claim:
An apparatus for dispensing a temperature sensitive cement during a surgical operation comprising: a housing having a cement exit port; a flexible cement packet, within the housing, containing the temperature sensitive cement; a thermocouple assembly providing a first temperature controlled region and a second temperature controlled region; the first temperature controlled region being adjacent the flexible cement packet; the second temperature controlled region being adjacent the cement exit port; a cement extractor means, adjacent the cement packet, for moving cement out of the flexible cement packet and toward the exit port and, wherein the cement extractor means comprises: a frame; a threaded shaft rotationally mounted in the frame; a circular disk pivotally mounted in the frame adjacent to and engaging the threaded shaft; the circular disk further comprising a radial slot containing a ball; and a guide means, adjacent the flexible cement packet, for driving the ball along the flexible cement packet when the threaded shaft is turned.