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Dialysis systems and methods including cassette with air removal

  • US 8,221,529 B2
  • Filed: 11/21/2011
  • Issued: 07/17/2012
  • Est. Priority Date: 10/01/2007
  • Status: Active Grant
First Claim
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1. A dialysis fluid cassette comprising:

  • a rigid portion defining at least one valve chamber and a dialysis fluid pathway, the rigid portion including;

    a plurality of walls,a dialysis fluid inlet,a dialysis fluid outlet, anda separation wall extending from a first one of the plurality of walls to a second one of the plurality of walls, the separation wall having a free edge, the separation wall and the plurality of walls constructed and arranged so as to force dialysis fluid to flow from the dialysis fluid inlet around the free edge of the separation wall to the dialysis fluid outlet and to allow a cross-sectional area of the dialysis fluid pathway defined in part by the separation wall to increase as the dialysis fluid flows along the separation wall, to slow the flow of the dialysis fluid, allowing buoyancy forces to remove air from the dialysis fluid.

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