Plastic bag containing a disposable vortex breaker
AssigneeEMD Millipore Corporation
InventorsMartin Morrissey, David DeCoste
Life of this patent
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Abstract
The present invention consists of a closed presterilized bag having a disposable mixing element within it, a drive mechanism outside of the bag for rotating the mixing element without voiding sterility and a vortex breaker in the torm of one or more plastic sheet materials that are attached to various inner surfaces of the bag and disrupt the formation of vortices within the bag. Preferably the sheet(s) are formed of the same material as the bag and are sealed to the bag surfaces. More preferably, the sheet(s) extend across a diameter of the bag. Most preferably, the sheet(s) are perforated with one or more slits or openings to allow for good flow and mixing without a vortex being formed.
Claims17
A disposable mixer comprising a plastic bag having an internal volume defined by the inner surfaces of the bag, a disposable mixing element contained within the internal volume of the bag and a vortex breaker formed of one or more sheets of plastic material, each sheet of the vortex breaker having a first end and a second end, the first end being attached to a first inner surface of the bag and the second end being attached to a second inner surface of the bag which is at different location in the bag from the first inner surface with the one more sheets of the vortex breaker extending between the first and second inner surfaces of the bag.
A disposable mixer comprising a plastic bag having an internal volume defined by the inner surfaces of the bag, wherein the bag is a two-dimensional pillow style bag, the bag having a top inner surface and a bottom inner surface, a magnetically driven disposable mixer mounted to the bottom of the bag and contained within the internal volume of the bag and one or more sheets of plastic material forming a vortex breaker attached to the top inner surface of the bag and extending to and being attached to the bottom inner surface of the bag.
Dependencies are inferred from the claim text.