Device for processing bone cement
AssigneesSulzer Brothers Limited, Allo Pro AG
InventorsEdeltraud Ziemann, Andreas Ziemann
Life of this patent
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Abstract
The device for processing bone cement includes a mixing station with a stirrer for mixing the components of the bone cement under vacuum. The device also includes a resting station in which the mixed ingredients may be stationed for a resting period, processing period and curing period. The temperature-dependent reaction time on the polarmarization reaction can be taken into account in determining the discrete time intervals by means of a temperature sensor for sensing ambient temperature. Acoustic and visual signal generating devices are also provided to indicate the end of each time intervals.
Claims20
A device for processing bone cement comprising
- a mixing arrangement including a mixing container for receiving bone cement ingredients, a stirrer for mixing the ingredients, and a motor for driving said stirrer;
- a vacuum pump for selectively evacuating said container;
- and
- a control means connected to said motor and said pump for controlling mixing of the ingredients in said container, said means including a time counter for monitoring time intervals during mixing and signal means for indicating the end of each said time interval.
A mixing arrangement for bone cement including
- a container for receiving bone cement ingredients;
- and
- a rotatable stirrer for mixing the ingredients in said container, said stirrer having a corkscrew shape with a horizontally disposed scoop of V-shape encompassing a longitudinal axis of said stirrer and a tearing hook extending from said scoop towards said axis.
A stirrer for mixing bone cement having a corkscrew shape extending along a longitudinal axis, a V-shaped scoop at one end extending perpendicularly of said axis and a tearing hook extending from said scoop towards said axis.
A device for mixing bone cement comprising
- a mixing station including a rotatable stirrer for receiving a container having mixable bone cement ingredients therein;
- a vacuum pump means connected to said mixing station for maintaining a predetermined negative pressure in the container during mixing of the bone cement ingredients;
- and
- a resting station for receiving the container after mixing, said resting station being in selective communication with said vacuum pump means for evacuation of the container during curing of the bone cement.
Dependencies are inferred from the claim text.