Agitating – In vacuum chamber
Patent
1996-11-05
1999-11-02
Cooley, Charles E.
Agitating
In vacuum chamber
366191, 366192, B01F 1306
Patent
active
059757515
ABSTRACT:
A motorized mixer for mixing bone cement for use in attachment of prosthetics and method for using the mixer. The mixer comprises a mixing chamber, a liner in the mixing chamber, an impeller within the liner, a motor for driving the impeller and programmable memory mechanics for regulating the operations of the motor. The liner comprises a basket for receiving vials of bone cement catalyst and a mixing bowl for receiving the bone cement powder. Preferably the two are permanently attached to one another. The mixing bowl is also used for mixing the two components together to produce the bone cement. During mixing the mixing bowl is maintained under a vacuum to withdraw fumes from the bone cement and to prevent gases from being mixed into the bone cement. Once mixing is complete, a U-shaped trap door releases the mixed bone cement from the mixing bowl, through a discharge tube and into a bone cement cartridge. By maintaining the interior of the bone cement cartridge under a vacuum, the withdrawal of the bone cement is simplified.
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