Method and apparatus for monitoring the supply of replacement fluid during an extracorporeal treatment of blood

A technology of extracorporeal blood treatment and extracorporeal blood circuit, applied in blood filtration, suction equipment, etc.

Inactive Publication Date: 2013-06-05
FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This known method requires the use of displacement pumps that generate pressure waves

Method used

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  • Method and apparatus for monitoring the supply of replacement fluid during an extracorporeal treatment of blood
  • Method and apparatus for monitoring the supply of replacement fluid during an extracorporeal treatment of blood
  • Method and apparatus for monitoring the supply of replacement fluid during an extracorporeal treatment of blood

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Embodiment Construction

[0039] figure 1 Only the main components of the blood treatment system that are relevant for monitoring pre-dilution or post-dilution are shown in a schematic representation. The blood treatment device of the present invention is a blood (dialysis) filtration device, which includes a dialyzer 1, which is divided into a first cavity 3 and a second cavity 4 by a semipermeable membrane 2, wherein blood flows through the first cavity 3, This first chamber 3 is hereinafter referred to as the blood chamber, while the dialysis fluid flows through the second chamber 4 , which is hereinafter referred to as the dialysis fluid chamber. The first chamber 3 is contained in an extracorporeal blood circuit 5A, while the second chamber 4 is contained in a dialysis fluid system 5B of a blood (dialysis) filtration device.

[0040] The extracorporeal blood circuit 5A comprises an arterial blood line 6 leading to the inlet 3 a of the blood chamber 3 and a venous blood line 7 leaving the outlet 3...

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Abstract

An apparatus and a method for monitoring the supply of replacement fluid during an extracorporeal treatment of blood is disclosed. Detection of the supply of replacement fluid upstream or downstream of the dialyser or filter is based on a measurement of the optical or physical density of the blood or of a constituent of blood in the extracorporeal circulation. To detect pre- or post-dilution, the blood flow rate and / or the replacement rate and / or the flow rate of the fluid removed from the blood through the dialyser membrane is altered, and the density of the blood or of the constituent of blood is measured upstream and / or downstream of the dialyser. Additionally, an apparatus for treating blood with an apparatus for monitoring the supply of replacement fluid is disclosed.

Description

technical field [0001] The invention relates to a method for monitoring the supply of a replacement fluid of an extracorporeal blood treatment device, wherein the extracorporeal blood treatment device has an extracorporeal blood circuit comprising a first chamber of a dialyzer or a filter, and a fluid system, The dialyzer or filter is divided into the first chamber and the second chamber by a membrane, and the fluid system includes the second chamber of the dialyzer or filter. Furthermore, the invention relates to a device for monitoring the supply of a replacement fluid of an extracorporeal blood treatment device and an extracorporeal blood treatment device having a monitoring device for the replacement fluid supply. Background technique [0002] Various methods are used for extracorporeal blood treatment or cleansing to remove substances normally eliminated with urine and for fluid collection. In hemodialysis, a patient's blood is cleaned outside the body in a dialyzer. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M1/34
CPCA61M1/342A61M2001/3434A61M2001/3431A61M2001/3437A61M1/3434A61M1/3437A61M1/361A61M1/3612A61M1/3441A61M1/3465
Inventor J·诺亚克J·德赖赫斯格
Owner FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
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