Extracorporeal blood treatment and system having reversible blood pumps

摘要

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, the method includes: withdrawing blood from a vascular system of a human patient and drawing the blood into the blood circuit; pumping the withdrawn blood through one of the pair of blood passages using a first blood pump of the console and into the blood treatment device; pumping the treated blood from the treatment device through the other of the pair of blood passages using a second blood pump of the console; infusing the treated blood from the other blood passage and into the vascular system of the patient, and periodically reversing a flow direction of blood through the pair of blood passages and blood treatment device.

主权项

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withdrawing blood from a vascular system of a human patient and drawing the blood into the blood circuit; pumping the withdrawn blood through one blood passage of the pair of blood passages and into the blood treatment device using a first blood pump coupled to the one blood passage and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the treated blood from the other blood passage and into the vascular system of the patient; withdrawing fluid from the withdrawn blood as the blood passes through the blood treatment device, wherein the rate of fluid withdrawal is determined by a filtrate pump coupled to a filtrate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of blood through the pair of blood passages and blood treatment device; and stopping the withdrawal of fluid from the withdrawn blood while the flow direction is reversed by stopping the filtrate pump.