Agitating – By movement of support for removable mixing chamber – Mixing chamber secured to support
Patent
1994-09-27
1996-04-30
Jenkins, Robert W.
Agitating
By movement of support for removable mixing chamber
Mixing chamber secured to support
366235, B01F 900
Patent
active
055118801
ABSTRACT:
A mixing device includes a plurality of elongated ampules mounted on a rotatable support with the longitudinal axis of each ampule inclined inwardly toward the rotational axis of the rotatable support. When the mixing device rotates about the rotational support, centrifugal force causes fluid in each ampule to move toward the end farthest away from the rotatable support. A bubble in each ampule then moves toward the opposite end. In one embodiment, the rotational support is inclined so that the end of each ampule positioned farthest from the rotational support is positioned sufficiently above the other end so that the bubble rises to the end farther from the support in at least one position as the support rotates. As a result, a bubble in each ampule moves back and forth between the ends of the ampule as the rotatable support rotates to mix respective fluids in the ampules. In another embodiment, the ampules are pivotably mounted on the elongated support so that opposite ends are alternately positioned farthest from the support, thereby causing a bubble to move back and forth in each ampule. A chamber for collecting a blood sampling may be positioned on the rotatable support for subsequent analysis by an analysis machine that uses the fluids in the ampules for calibrating and washing purposes.
REFERENCES:
patent: 3030082 (1962-04-01), Matzen
patent: 3091435 (1963-05-01), Pease
patent: 3294663 (1966-12-01), Lazaro
patent: 4848917 (1989-07-01), Benin
patent: 5044428 (1991-09-01), Nohl
patent: 5143084 (1992-09-01), Macemon
patent: 5399013 (1995-03-01), Sawyer
Jenkins Robert W.
SpaceLabs Medical, Inc.
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