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Method and device for monitoring an extracorporeal blood circuit

A technology of extracorporeal blood treatment and circuit, applied in the direction of blood circulation treatment, application, medical equipment, etc., can solve problems such as false alarms, and achieve the effect of improving reliability

Active Publication Date: 2018-01-30
FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the disadvantage is that unintentional wetting of the puncture by liquid can lead to false alarms

Method used

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  • Method and device for monitoring an extracorporeal blood circuit

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Embodiment Construction

[0028] figure 1 The main components of an extracorporeal blood treatment device are shown, in particular a hemodialysis device, which has a device for monitoring the access to the blood vessel. In this embodiment, the monitoring device is an integral part of the hemodialysis device.

[0029] The hemodialysis device has a dialyzer or filter 1 as a blood processing unit, and the dialyzer or filter is divided into a blood chamber 3 and a dialysate chamber 4 by a semi-permeable membrane 2. The arterial catheter 6 is connected to a fistula or shunt tube (not shown) of the patient through an arterial puncture cannula 5 as a connection port for the patient, and leads to the entrance of the blood cavity 3 of the dialyzer 1. The venous catheter 7 is connected from the outlet of the blood chamber 3 of the dialyzer 1, and the venous catheter is connected to the patient's fistula or shunt through the venous puncture cannula 8 as a patient connection port. The blood pump 9 is connected to t...

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Abstract

The invention relates to a method and a device for monitoring an extracorporeal blood circuit I during extracorporeal blood treatment with an extracorporeal blood treatment device. Furthermore, the invention relates to an extracorporeal blood treatment device having a device for monitoring an extracorporeal blood circuit. The method according to the invention and the device according to the invention are based on the fact that the monitoring of the arterial and / or venous access to the patient is carried out with a first and a second method for increasing redundancy / redundancy, in which In the second method, the presence of at least one criterion characterizing the non-compliant state of the access to the blood vessel is checked in each case, wherein the criteria of the first and second method differ from each other. In the method according to the invention and in the device according to the invention, the blood pump (9), which is preferably a stop-flow blood pump, is stopped after it has been determined that at least one criterion of the first method is present, while the vein sealing mechanism (17 ) remain open. After the blood pump (9) has stopped, the presence of at least one criterion is checked using a second method. The vein sealing mechanism ( 17 ) is only closed when at least one criterion of the second method is present. Otherwise, the blood pump (9) is started again for further blood treatment.

Description

Technical field [0001] The present invention relates to a method for monitoring an extracorporeal blood circulation circuit during extracorporeal blood treatment using an extracorporeal blood treatment device. In addition, the present invention also relates to an extracorporeal blood treatment device for monitoring an extracorporeal blood circulation circuit, and an extracorporeal blood treatment device having a device for monitoring the extracorporeal blood circulation circuit. Background technique [0002] Various devices are known in the medical technology field, with which liquid can be drawn from or infused into the patient through a catheter. Here, the access to the patient is usually realized with a catheter for insertion into a body organ or a cannula for vascular puncture. During the examination or treatment, it is necessary to ensure that the prescribed access to the patient is met. Therefore, it is required to monitor the access to the patient. [0003] The extracorpo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M1/36
CPCA61M1/3639A61M2205/17A61M2230/06A61M2205/50A61M1/3656A61M2205/18A61M2230/04
Inventor P·克佩尔施密特T·纽伦贝格
Owner FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH