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Artificial kidney

  • US 4,204,957 A
  • Filed: 11/04/1976
  • Issued: 05/27/1980
  • Est. Priority Date: 11/21/1975
  • Status: Expired due to Term
First Claim
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1. An artificial kidney comprising a filter disposed between an artery connection and a vein connection, a collecting means for the filtrate to be discharged from said filter, a means for providing a metered supply of substituate to the purified blood, and a measuring means including two weighing devices, a first weighing device measuring the weight of the filtrate to be discharged, and a second weighing device measuring the weight of the substituate, said measuring means further including a means for forming a quotient of the weight recorded by the first weighing device and that recorded by the second weighing device, and a comparison means for comparing said quotient with at least one desired value, said measuring means controlling said providing means in dependence on the result of the comparison whereby the metered supply of substituate is in a fixed weight proportionability to the filtrate weight.

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