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Apparatus for treatment of artificial kidney dialyzing fluid

  • US 4,118,314 A
  • Filed: 05/19/1975
  • Issued: 10/03/1978
  • Est. Priority Date: 01/09/1974
  • Status: Expired due to Term
First Claim
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1. In an artificial kidney apparatus having a hemodialyzer for treating a recirculating dialyzing fluid, an adsorbent bed for receiving said dialyzing fluid for removal of contained toxins, and a desorbing fluid for desorbing said adsorbent bed of said toxins, the improvement comprising:

  • a plurality of adsorbent beds for treating said dialyzing fluid,first flow control means for repeatedly and alternately selecting one and then another of said adsorbent beds for receiving said dialyzing fluid,second flow control means for repeatedly and alternately selecting one of said adsorbent beds for receiving water as a desorbing liquid after said adsorbent bed received said dialyzing fluid, whereby one of said adsorbent beds will repeatedly and alternately receive the dialyzing fluid to remove toxins therefrom and thereafter water as the desorbing fluid to desorb said toxins and reactivate the adsorbent bed while another of said adsorbent beds passes through a reverse cycle,third flow control means for repeatedly and alternately selecting one of said adsorbent beds for receiving fresh dialyzing fluid to displace said water remaining in said adsorbent bed and to effect further desorption of said toxins in said adsorbent bed after said adsorbent bed received said water as a desorbing liquid.

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