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Means for regulating and monitoring dialysis of blood in a dialyzer

  • US 4,132,644 A
  • Filed: 06/28/1977
  • Issued: 01/02/1979
  • Est. Priority Date: 06/28/1977
  • Status: Expired due to Term
First Claim
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1. Means for regulating and monitoring the dialysis of blood in a dialyzer included in a recirculation circuit for dialyzing liquid, said circuit further comprising:

  • (a) a liquid reservoir constituted by a flexible liquid tight bag;

    (b) conduits tightly sealed to said liquid tight bag for liquid flow in closed circuit between said bag and the dialyzer;

    (c) scale means for weighing the liquid contained in said bag, thereby indicating the amount of ultrafiltrate extracted from the dialyzed blood and received by the dialyzing liquid; and

    (d) a tightly closable pressure tank enclosing the liquid tight bag, the tank volume outside the bag being connected with a suction pump adapted to provide a suitably reduced pressure in said recirculation circuit, in order to achieving predetermined regulation of said extracted amount of ultrafiltrate from the blood.

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