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Dialysis process and system

  • US 5,685,988 A
  • Filed: 09/15/1993
  • Issued: 11/11/1997
  • Est. Priority Date: 09/15/1993
  • Status: Expired due to Fees
First Claim
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1. In a dialysis process incorporating a dialyzer for the removal of impurities from a flowing supply of blood to a flowing supply of fresh dialysate from a main supply of dialysate by means of a dialysis membrane separating the flowing supply of blood from flowing supply of fresh dialysate, the improvement comprising:

  • providing a closed dialysate recirculation loop,discontinuing the flow of fresh dialysate to the dialyzer and recirculating the dialysate in said closed dialysate recirculation loop isolated from the main supply of dialysate until concentration equilibrium has been established between a solute in the blood and in the closed dialysate recirculation loop,analyzing the contents of the closed dialysate recirculation loop to determine the solute concentration,discontinuing recirculation in said closed dialysate recirculation loop and providing a flow of fresh dialysate to the dialyzer to continue normal dialysis,repeating the recirculation process at the end of the dialysis period to determine solute loss so as to permit the quantification of dialysis therapy and provide on-line prescription.

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