Biological Fluid Filtration System and Biological Fluid Filter Used Therein
AssigneeHemerus Medical, LLC
InventorsMajid Zia, Chaouki A. Khamis
Life of this patent
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Abstract
A biological fluid processing or fluid filtration system is provided having novel open and closed loop processing systems wherein the gases transferred into and out of the system during processing pass through a porous medium in upstream and/or downstream gas inlet or outlet housings or vents in a manner which precludes the fluid being processed or filtered from ever contacting the housings or vents. Each housing or vent is separated from the fluid by a column of gas in its respective transfer line. The upstream gas inlet housing or vent is in communication with the unfiltered biological fluid, and the downstream gas inlet housing or vent is in communication with the filtered biological fluid.
Claims9
A biological fluid filter comprising:
- a) an inlet section, said inlet section comprising a top wall and a downstanding peripheral side wall;
- b) an outlet section complimentary in shape to and bonded to said inlet section to form a chamber communicating with atmosphere, said outlet section comprising a bottom wall and upstanding sidewall, and;
- c) a filter element mechanically held in place between said inlet section and said outlet section to divide said chamber into at least an inlet chamber and an outlet chamber.
A fluid filtration apparatus including:
- a) a filtration device, said filtration device having a filter media dividing said filtration device into an up-stream side and a downstream side;
- b) a storage container for holding filtered fluid;
- c) a second conduit connected between the downstream side of said filtration device and said storage container, and;
- d) a second vent line in fluid communication with the downstream side of said filtration device and selectively open to atmosphere.
A filter element comprised of a filter medium, said filter medium divided into two or more sections, separated from each other, so that the wicking properties of the filter medium used will not cause any substantial air entrapment when used in a biological fluid filter device.
Dependencies are inferred from the claim text.