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Dialysis system having disposable cassette and heated cassette interface

  • US 8,715,235 B2
  • Filed: 07/05/2007
  • Issued: 05/06/2014
  • Est. Priority Date: 07/05/2007
  • Status: Active Grant
First Claim
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1. A dialysis fluid flow control system comprising:

  • a disposable cassette including at least one pump chamber;

    a pumping cassette interface including a pump area operable with the at least one pump chamber of the disposable cassette;

    the cassette interface further including a volumetric reference chamber used in a volumetric control of a dialysis fluid pumped pneumatically into and out of the at least one pump chamber of the disposable cassette, the volumetric reference chamber configured and arranged to hold gas and not liquid while the dialysis fluid is pumped into and out of the at least one pump chamber of the disposable cassette;

    a heater connected operably to the cassette interface; and

    a controller connected operably to the heater so as to cause the heater to heat at least a portion of the cassette interface to a desired temperature.

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