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Automatic Fluid Container Switching In A Blood Processing System

  • US 20130233394A1
  • Filed: 09/05/2012
  • Published: 09/12/2013
  • Est. Priority Date: 09/06/2011
  • Status: Active Grant
First Claim
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1. A system for determining when a fluid supply container of a fluid processing apparatus becomes empty, the system comprising:

  • a first fluid supply container;

    a first scale for measuring the weight of the first fluid supply container and providing a first output signal indicative of the measured weight of the first fluid supply container;

    a pump for pumping fluid from the first fluid supply container;

    a controller configured to receive the first output signal from the first scale,to determine the rate of change in weight of the first fluid supply container, and to determine that the first fluid supply container is empty when the rate of change becomes substantially zero and the first fluid supply container weight is below a first pre-established threshold.

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