Fresenius Medical Care Deutschland Gmbh

Peter Scheunert

Martin Lauer

Manfred Weis

Joachim Manke

Josef Beden

Martin Herklotz

Uwe Hahmann

Alexander Bongers

Daniel Gerlach

Dejan Nikolic

Winfried Brehm

Joachim Noack

Jürgen Häcker

Ralf Mueller

Wolfgang Schulz

Klaus Metzner

Ralf Müller

Uwe Lapp

Itka Bado

Götz Günther

Udo Waeber

Martin Kaiser

Franz-Wilhelm Koerdt

Markus Köhler

Markus Koehler

Goetz Günther

Alexander Kuhn

Oliver Bond

Goetz (deceased) Guenther

Udo WÄBER

Jürgen HÄCKER

Martin Kalser

Alexander Kühn

A dialysis machine has two hydraulic connectors at the dialysate side to which a respective connection line having a filter coupling is connected for connection to a dialyzer, with the hydraulic connectors being an inflow connector for feeding fresh dialysis liquid to the dialyzer and a backflow connector for draining consumed dialysate from the dialyzer. The dialyzer machine also has two parking positions associated with the respective hydraulic connectors for storing the filter couplings when not in operation, wherein the filter couplings of both hydraulic connectors are equipped with a connection sensor which recognizes a connecting of the filter coupling to a dialyzer and/or that both parking positions are provided with separate covers.

Dialysis machine having security against confusion for hydraulic connectors

The invention relates to a blood treatment device comprising an attachment unitfor attaching a functional unitintended for single use for carrying out the blood treatment. The blood treatment device according to the invention is characterised by a monitoring unitfor monitoring the operability and/or the operating state of the functional unit, which functional unit comprises at least one light transmitterA,A and at least one light receiverB,B. The light transmitter and light receiver are arranged in the monitoring unitaccording to the invention on one side of the functional unit. The arrangement of the light transmitter and light receiver on the same side has the advantage that the monitoring unitcan be integrated into the attachment unitof the blood treatment device without any major structural modifications. The monitoring of the functional unitis based on an optical measurement method in which the light reflected on a part of the functional unitor a part of the attachment unitis detected. A calculation- and evaluation unitis configured such that conclusions can be drawn as to a defective state and/or a certain operating state of the functional unitbased on the intensity of the light falling on the functional unit and the light reflected on the functional unit or the attachment unit.

Blood treatment device comprising a functional unit for carrying out the blood treatment and method for monitoring the functionality and/or the operating state of the functional unit

A dialysis machine that includes a valve member having a deformable area configured to deform outwardly away when pressurized fluid is introduced into the valve member. The valve member is configured so that, when a dialysis fluid cassette is disposed in a cassette compartment of the dialysis machine and pressurized fluid is introduced into the valve member, the deformable area obstructs a fluid channel of the dialysis fluid cassette to control dialysis fluid flow therethrough.

Dialysis systems and related methods

Disclosed is a sealing device for sealing at least one first volume of an arrangement for the treatment of at least one medical fluid against at least one second volume, wherein the first volume is provided for receiving at least one external functional device. The sealing device includes at least one first connection device whereby the sealing device may be connected to the arrangement. In addition an arrangement and a method are disclosed.

Sealing means for sealing a volume of a medical treatment arrangement against another volume, as well as an arrangement and a method

A dialysis fluid cassette that includes a base and a flexible membrane attached to the base. The flexible membrane and the base cooperate to at least partially define a venting chamber and a fluid channel fluidly connected to the venting chamber.

Dialysis fluid cassettes and related systems and methods

An apparatus for treating a medical liquid includes a treatment machine having a coupling surface and a flexible mat arranged on the coupling surface, with a cassette made of a hard part having liquid-conducting passages therein which are covered by a flexible film that is couplable to the coupling surface of the treatment machine via the flexible mat. The apparatus includes an element for monitoring a fault-free coupling to the cassette at the coupling surface by determining a difference of the pressure between the cassette and the flexible mat and the pressure between the flexible mat and the coupling surface. A method for checking the leak tightness of the fault-free coupling employs the apparatus.

Apparatus for treating a medical liquid, and method for checking the leaktightness of the apparatus

The present invention relates to a device and a method for detecting blood or blood constituents in the liquid system of a device for extracorporeal blood treatment, comprising a dialysis device or filter divided by a semipermeable membrane into a first chamber and a second chamber, wherein the first chamber is part of the extracorporeal blood circulation system and the second chamber part of the liquid system of the extracorporeal blood treatment device. The device according to the present invention for detecting blood or blood constituents in the liquid system of an extracorporeal blood treatment device is designed as a unit for differentiating between the entry of blood into the liquid system due to a defect of the dialysis device or filter, for example a rupture of the semipermeable membrane of the dialysis device or filter, or the entry of hemoglobin into the liquid system due to hemolysis, wherein a differentiation is made between a defect of the dialysis device or filter or hemolysis based on the change in intensity of at least the blue fraction of the light exiting from the liquid.

Device and method for detecting blood or blood constituents in the liquid system of a device for extracorporeal blood treatment

The invention relates to an apparatus for the treatment of a medical liquid comprising a liquid treatment machine and a cassette insertable therein substantially made of a rigid base body of the cassette with fitted chambers and passages and a foil covering them.

Medical fluid cassettes and related systems

This invention relates to the field of signal transit time sensors, in particular sensors based on ultrasonic transit times. Existing electronic control circuits for such transit time sensors for measurements on medical liquids, in particular blood, are extremely complex or their time resolution is limited. However, the present invention makes use of a simple measurement technique which cannot be used directly at first for the time resolution to be achieved. In this method, an ordinary sampling method is used to detect the received signal (). An oscillator-like received signal () generated by an emitted step-like signal is first sampled during a half-period () and is checked with the help of a selection criterion. Only when the result of this check is positive is at least one interpolated or extrapolated contact point () of the received signal () with a resting level () determined in a received signal-time diagram with the help of which the signal transit time or the change in signal transit time is determined.

Acoustic method for measuring a signal propagation time in a medical liquid and device for using this method

An apparatus for the treatment of a medical liquid has a liquid treatment machine and a cassette that is insertable in the machine. The cassette has a rigid base body with fitted chambers and passages and a foil that covers the chambers and passages. Actuators and sensors are arranged in the liquid treatment machine for the operation of the apparatus with the inserted cassette such that cassettes are insertable in different integration shapes.

Device for treating a medical liquid

A medical appliance having an auxiliary computer system in addition to its action computer system, and further having two communications buses. The auxiliary computer system independently monitors the functional mode of the action computer system and can induce a reliable state of the appliance in an emergency. To easily, quickly and reliably implement a programming, the execution of test sequences, the diagnosis and the maintenance of such an appliance, a connection line, which can be interrupted by a switch, is arrange between the communication buses, and both communications buses can be connected to form a unified communications bus via the communication line. A method for executing such a programming process, testing process, diagnostic process and/or maintenance process of a medical appliance is also provided.

Medical device with dual communications bus

A blood treatment device, in particular a dialysis machine, which permits both single-needle and dual-needle operation. The device has a blood treatment unit, in particular a dialyzer that has an inlet connected to a feed line and an outlet connected to a return line. The feed line has two parallel line branches with a positive displacement pump being connected into the first and second line branches. To produce a fluid connection between the outlet of the dialyzer and one of the two pumps, a connection line is provided. For dual-needle operation, the feed and return lines are connected to an arterial and a venous needle. For single-needle operation, the feed and return lines are brought together and connected to a common needle. The connection line permits single-needle operation without great changes to the structure of the blood treatment device.

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Friedrichsdorf, Germany

Peter Scheunert