Agitating – In vacuum chamber
Patent
1986-12-08
1988-07-19
Petrakes, John
Agitating
In vacuum chamber
366189, 366197, B01F 1306
Patent
active
047580968
ABSTRACT:
This invention relates to an apparatus for mixing bone cement in vacuum, in which mixing takes place in a container (11) from which ready-mixed bone cement (4) is adapted to be ejected by means of a piston (2) in the mixing container (1) for supplying the bone cement (4) to a hollow in the bone wherein a prosthesis is to be fixed by means of the bone cement (4), and the mixing container (1) is connectable to a vacuum device which is adapted to generate vacuum in the mixing container (1) during mixing.
With a view to providing an apparatus of simple and compact design, which permits efficient retention of the mixing container during mixing, the vacuum device comprises a vacuum container (9) in which the mixing container (1) is adapted to be disposed in such a way that the mixing container spaces (3, 6) on both sides (5, 7) of the piston (2) communicate with the interior (10) of the vacuum container (9) whereby the same vacuum is obtained on both sides of the piston (2).
REFERENCES:
patent: 2696022 (1954-12-01), Steinbock et al.
patent: 3131912 (1964-05-01), Steinbock, Jr.
patent: 3918687 (1975-11-01), Hubers et al.
patent: 4185072 (1980-01-01), Puderbaugh et al.
patent: 4457629 (1984-07-01), Liaw et al.
patent: 4577973 (1986-03-01), Occelli
patent: 4653568 (1987-03-01), Baldelli
Mit AB
Petrakes John
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