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Dialyzer and method for correcting blood flow values

A technology of dialyzer and blood flow, applied in the field of dialyzer, can solve the problems of unrealized blood volume, misuse of dialyzer, and low blood flow rate, etc.

Active Publication Date: 2021-11-09
FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This results in: Physician's prescription or accumulated purified blood volume for dialysis treatment is therefore not achieved because the true effective blood flow rate is less than the user-set blood flow rate
[0010] It is known from practice that the treatment is performed without connection of the pressure discharge line and thus without connection of the pressure sensor, which is a misuse of the dialyzer

Method used

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  • Dialyzer and method for correcting blood flow values

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Embodiment Construction

[0032] In this case, reference numeral 16 designates a blood inlet, which can be formed as a fistula or a shunt, while reference numerals 15a and 15b designate an arterial needle and a venous needle.

[0033] Blood passes from the arterial needle 15a via the blood hose 14 via the arterial pressure outlet line 1c to the artery TP with reference number b for measuring the arterial pressure P a The arterial pressure sensor 1a is connected to the artery TP. Downstream of the arterial pressure sensor there is a blood pump 3 and downstream of the blood pump there is a heparin pump 4 . An arterial bubble trap 5 is located between the heparin pump 4 and the dialyzer.

[0034] The dashed line in 1b indicates the transition from the hose system to the dialyzer. There, therefore, the pressure discharge line is connected to a pressure sensor, for example to a Luer connector.

[0035] The dialyzer is denoted with reference number 6 and is divided by a semipermeable membrane 7 , preferab...

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Abstract

The invention relates to a dialyzer with an extracorporeal blood circuit in which a dialyzer, a blood pump and an arterial pressure sensor are arranged, wherein the dialyzer also has a compensation device by means of which The value set for the blood flow through the extracorporeal blood circuit can be corrected to a compensated value using the arterial blood pressure, wherein the dialyzer also has a recognition device which is designed to recognize the arterial pressure whether a sensor is connected to the extracorporeal blood circuit (1) and that the dialyzer has an evaluation unit, which is designed to be used if it is recognized by the recognition means that the arterial pressure sensor is not connected to the On the extracorporeal blood circuit, the value of the arterial blood pressure is then estimated.

Description

technical field [0001] The invention relates to a dialyzer having an extracorporeal blood circuit in which a dialyzer, an arterial pressure sensor and a blood pump are arranged, wherein the dialyzer also has a compensating device by means of which the arterial blood pressure is utilized The set value for the blood flow through the extracorporeal blood circuit is corrected to the compensated value. Background technique [0002] Dialyzers are known from the prior art which have an arterial pressure sensor in the extracorporeal blood circuit between the arterial needle and the blood pump. The arterial pressure sensor is used to detect the arterial pressure during dialysis treatment. The pressure sensor is connected to the arterial line of the extracorporeal blood circuit via a pressure discharge line. The pressure discharge line usually has a transducer protector (hereinafter "TP") which protects the pressure sensor from contact with the patient's blood. This is usually achi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M1/36
CPCA61M1/3639A61M2205/14A61M2205/16A61M2205/3331A61M2230/207A61M2230/30A61M1/3609A61M1/1601
Inventor 张伟克里斯托夫·巴尔多尔兹
Owner FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH