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Dialysis machine including ultrafiltration and backfiltration means

A dialyzer and machine technology, applied in dialysis systems, medical devices, blood filtration, etc., can solve the problems of long operation time, high cost, and high risk of pollution, so as to avoid machine disinfection and flushing, avoid accuracy errors, Controlling the effect of filter operation simplification

Active Publication Date: 2014-06-11
菲斯蒂亚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Those operations are time-consuming, costly, and still have a high risk of contamination

Method used

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  • Dialysis machine including ultrafiltration and backfiltration means
  • Dialysis machine including ultrafiltration and backfiltration means
  • Dialysis machine including ultrafiltration and backfiltration means

Examples

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Embodiment Construction

[0106] With reference to the drawings and as described above, the present invention relates to a dialysis machine which makes it possible to treat bodily fluids or "body fluids", such as blood or plasma. The term "body fluid" is used to mean various fluids present in the human or animal body, such as blood or plasma.

[0107] It should be noted that the dialysis machine of the invention is described below in the context of the body fluid to be purified being blood. Blood is composed of water with mineral salts, and various substances and cells, such as red blood cells. Of course, the following machine descriptions also apply to bodily fluids other than blood.

[0108] The dialysis machine comprises a dialyzer 1 with a housing containing a dialysis membrane 3 which subdivides the housing into a blood chamber 12 and a dialysate chamber 13 .

[0109] Dialysate is a fluid well known to those skilled in the art and has a composition close to that of physiological serum. The dial...

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PUM

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Abstract

The invention relates to a dialysis machine including a dialyser (1), a system (5) for transporting the dialysate including a transport line (52), and a discharge system (6) including a discharge line (62). The dialysis machine includes ultrafiltration (UF) and backfiltration (BF) control means. The transport line comprises a restriction (520) and a means for measuring the pressure difference (523, 524) at the limits of said restriction. Said transport system also includes a ventricle bag (50), and a means (70) for pressurising said ventricle bag (50). Said machine includes a system (C5, C5') for opening / closing the discharge line (62) and said backfiltration control means controls the closing of the discharge line (62), and the pressure applied to said ventricle bag (50), in accordance with the pressure difference measured at the limits of the restriction (520), in order to obtain a predetermined dialysate flow rate.

Description

technical field [0001] The present invention generally relates to a dialysis machine, in particular a dialysis machine for hemodialysis. [0002] The invention relates more particularly to a dialysis machine which makes it possible to treat bodily fluids or "body fluids", such as blood or plasma. The dialysis machine comprises a dialyzer having a housing containing a dialysis membrane which subdivides the housing into a body fluid chamber and a dialysate chamber. The body fluid chamber has a body fluid inlet and a body fluid outlet, and the dialysate chamber has a dialysate inlet and a dialysate outlet. The dialysis machine also includes a dialysate feed system comprising a dialysate feed line connected to the dialysate chamber inlet, and a dialysate drain system comprising a dialysate drain line connected to the dialysate chamber outlet. The dialysis machine also includes a control unit, such as a programmable controller, which includes an ultrafiltration control (UF) such ...

Claims

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Application Information

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IPC IPC(8): A61M1/34
CPCA61M1/1635A61M1/3465A61M1/3427A61M1/342A61M1/34A61M1/152A61M1/154A61M1/1563A61M1/16A61M2205/3331A61M2205/3334A61M1/341A61M1/3641B01D61/32B01D61/28
Inventor 埃里克·文森特
Owner 菲斯蒂亚
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