Fresenius Medical Care Deutschland Gmbh

Jochen Schneider

Ralf Wamsiedler

Martin Lauer

Reinhold Reiter

Wolfgang Biesel

Thomas Nuernberger

Marco Caronna

Berthold Breitkopf

Joerg Jonas

Joern Apel

Manfred Baumann

Christian Busse

Herbert Neubauer

Elmar Huegel

Gerhard Spengler

Alfred Gagel

Reiner Spickermann

Klaus Balschat

Olaf Nicholas

Stefan Kellermann

Thomas Nürnberger

Santer Zur Host-Meyer

Hans-Joachim Muench

Steffen Kirchner

Tobias Fritsche

Jörg Jonas

Thomas Nurnberger

Jorg Jonas

Elmar Hugel

Jorn Apel

René Bauer

Elmar Hügel

Jörn Apel

The invention relates to a sensor systemfor the capacitive measurement of the fill level of a fluid mediumin a container, preferably a bubble catcher of a dialysis device, comprising a receptacleon which two contact areas are provided for contact with an external surface of the accommodated container and with at least one level detection electrode C, C, C, C, C, Cdisposed in each contact area for capacitive detection of the fluid level in the container. The sensor system has a coupling measurement device C, C, C, Cfor capacitive determination of the correct coupling.

Sensor system for detecting the fill level of a fluid in a vessel

A roller pump includes a stator with a pump bed formed therein, and a rotor for acting on a hose inserted into the pump bed in arcuate form. The ends of the hose are guided out of the pump bed in a crossed configuration.

Pump with crossing lines

The invention relates to a roller pump consisting of a stator with a pump bed formed therein and a rotor for acting on a hose inserted into the pump bed in arcuate form. In accordance with the invention, the flow paths associated with the ends of the tube guided out of the pump bed cross.

Roller pump

The present invention relates to a method and a device for monitoring a flowing medium, in particular the blood flowing in an extracorporeal blood circulation, for the presence of air, in particular micro-bubbles. A sequence of signal pulses or a continuous signal is injected into the flowing medium, and the signal pulses or continuous signal leaving the flowing medium are received. To detect micro-bubbles, a signal pattern that is characteristic of the variation over time of the received signal pulses or the continuous signal in a predetermined period of time is extracted from the signal received. The characteristic signal pattern is compared with one or more characteristic reference patterns, and the presence of air bubbles is determined if the characteristic signal pattern deviates from the characteristic reference pattern by a predetermined amount. Statistical characteristic variables, in particular the variance, are preferably determined from the signal patterns and compared with one another.

Method and device for monitoring a flowing liquid for the presence of air

The invention relates to a method and a device for monitoring a flow of liquid for the presence of air bubbles, in particular the blood flowing in an extracorporeal blood circuit of an extracorporeal blood treatment device. The air bubbles are detected by an ultrasound measurement and the ultrasound signals received in a continuous sequence of time intervals are each compared to a predetermined reference level. When the amplitude of the ultrasound signal, or a parameter correlating to the amplitude of the ultrasound signal, is less than the predetermined reference level, the presence of a defined volume of air is determined. When the number of times the ultrasound signal is less that the predetermined reference value if is greater than the set limit value, it is determined that a critical volume of air is present in the patient's blood and the dialysis is stopped.

Method and device for monitoring a flow of liquid for the presence of air by means of ultrasound

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Wipfeld, Germany

Jochen Schneider