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Extracorporeal blood treatment and system having reversible blood pumps

  • US 9,089,653 B2
  • Filed: 05/29/2013
  • Issued: 07/28/2015
  • Est. Priority Date: 12/03/2004
  • Status: Expired due to Fees
First Claim
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1. An extracorporeal blood processing method using a blood circuit comprising a pair of blood passages attached to opposite flow ends of a blood treatment device and said blood circuit is mounted on a blood pump console, said method comprising:

  • withdrawing blood from a vascular system of a human patient and drawing the blood into the blood circuit;

    pumping the withdrawn blood through one blood passage of the pair of blood passages and into the blood treatment device using a first blood pump coupled to the one blood passage and mounted to the console;

    pumping the treated blood from the treatment device through the other blood passage of the pair of blood passages using a second blood pump coupled to the other blood passage and mounted to the console;

    infusing the treated blood from the other blood passage and into the vascular system of the patient;

    withdrawing fluid from the withdrawn blood as the blood passes through the blood treatment device, wherein the rate of fluid withdrawal is determined by a filtrate pump coupled to a filtrate passage and mounted to the console;

    periodically reversing a flow direction of blood through the pair of blood passages and blood treatment device; and

    stopping the withdrawal of fluid from the withdrawn blood while the flow direction is reversed by stopping the filtrate pump.

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