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Device and method for determining a dialysis fluid flow rate or blood flow rate for extracorporeal blood treatment

A technology for extracorporeal blood treatment and dialysis fluid, which is used in dialysis systems, pharmaceutical devices, and other medical devices, etc., and can solve problems such as the increase in the cost of dialysis fluid.

Active Publication Date: 2009-08-26
FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] When setting a given dialysis fluid flow rate, it must be borne in mind that while high clearance rates can be achieved with high dialysis fluid flow rates, the cost of supplying fresh dialysis fluid and setting used dialysis fluid increases

Method used

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  • Device and method for determining a dialysis fluid flow rate or blood flow rate for extracorporeal blood treatment
  • Device and method for determining a dialysis fluid flow rate or blood flow rate for extracorporeal blood treatment
  • Device and method for determining a dialysis fluid flow rate or blood flow rate for extracorporeal blood treatment

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Embodiment Construction

[0031] figure 1 An exemplary embodiment of a blood treatment apparatus according to the invention with a device according to the invention for setting an optimum dialysis fluid rate is shown. Blood treatment apparatus with a device for setting an optimum dialysis fluid rate according to the invention and figure 1 The shown devices differ only in the dialysis fluid rate Q determined by the criteria according to the invention, which is not a function of the blood flow rate d Instead, with the dialysate fluid rate Q d Varying blood flow rate Q b , an increase in the rate by a given amount would result in an increase in the measure characteristic of the effectiveness of the blood treatment by no less than a given amount. Additionally, both devices include the same components.

[0032] For more clarity, in figure 1 Only the basic components of the blood treatment plant are shown in , since the individual components of a blood treatment plant for hemodialysis or hemodiafiltrati...

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PUM

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Abstract

The invention relates to a device (18) and to a method for determining the dialysis fluid flow rate for an extracorporeal blood treatment device. The dialysis fluid flow rate Qd is determined in accordance with the blood flow rate Qb or the blood flow rate Qb is determined in accordance with the dialysis fluid flow rate Qd, wherein by increasing about a specific value, the increase of a variable characterising the efficiency of the blood treatment, in particular clearance K, does not exceed the specific value. The invention also relates to a blood treatment device comprising a device (18) for determining the dialysis fluid flow rate or blood flow rate and to a method for operating an extracorporeal blood treatment device. As a result, an optimal dialysis fluid flow rate and / or blood flow rate calculates the requirement in accordance with a high efficiency of the dialysis treatment and in accordance with a reduced consumption of the dialysis liquid.

Description

technical field [0001] The present invention relates to a device and a method for presetting a dialysis fluid flow rate or a blood flow rate of an extracorporeal blood treatment apparatus having a dialyzer which is divided into a blood flow by a semipermeable membrane for presetting the blood flow rate A chamber for passing blood and a chamber for dialysis fluid to pass through at a preset dialysis fluid rate. The invention also relates to a blood treatment apparatus with means for presetting the dialysis fluid rate or the blood flow rate and to a method of operating an extracorporeal blood treatment apparatus. Background technique [0002] During blood purification therapy, e.g., hemodialysis, hemofiltration, hemodiafiltration, the patient's blood is conveyed through an extracorporeal blood circuit in which there is a blood chamber and a dialysis fluid chamber separated by a semipermeable membrane or Dialyzer or filter in the filter chamber. In hemodiafiltration, hemodial...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M1/16
CPCA61M2001/1615A61M1/16A61M2001/1613A61M1/1613A61M1/1615A61M2205/50A61M1/3607A61M2205/3331A61M2205/3334
Inventor U·莫伊西尔A·伍皮尔
Owner FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH