Patent ID: 8061887
Filing Date: 2011-11-22
Classification: A61B,A61F,B01F

Abstract:
1. A cartridge in which bone cement is mixed and from which bone cement is discharged, said cartridge including: a cylinder having opposed first and second ends, an inner surface that defines a mixing chamber that extends between the ends, a first end face that extends over the first end and an opening through the first end face into the mixing chamber; a component releasably mounted to the cylinder first end that, when mounted to said cylinder, closes the first end face opening; a piston slidably disposed in the cylinder mixing chamber that can move from a position adjacent the second end towards the first end, said piston having a face that is directed towards the cylinder first end; a locking member associated with said piston that selectively prevents movement of said piston through the cylinder mixing chamber toward the first end face; a shaft that extends from outside of the cylinder through one of the cylinder ends into the cylinder mixing chamber, said shaft mounted to said cylinder so as to be able to rotate within the mixing chamber and move longitudinally within the mixing chamber; and a blade disposed in said mixing chamber, said blade shaped to have: