Fresenius Medical Care Deutschland Gmbh

Paul Aschenbrenner

Olaf Nicholas

Berthold Breitkopf

Thomas Schmitt

Dirk Hümmer

Tim Danz

Oswald Scheuring

The invention relates to a circuit arrangement for a protective-conductor connection to at least two fluid-conducting lines, in particular to at least two fluid-conducting lines which are guided outwards from the interior of a housingof a medico-technical device, in particular the housing of a blood treatment device. The circuit arrangement comprises a plurality of protection apparatusesA,B;A,B for electrical contacting which are designed such that an electrical connection to a fluid in the line can be produced using each protection apparatus for electrical contacting. In the circuit arrangement, at least two protection apparatusesA,B;A,B for electrical contacting are assigned to each fluid-conducting line. As a result, two protective measures are taken for each fluid-conducting line. In addition, the protection apparatusesA,B;A,B of one fluid-conducting lineare each electrically connected to another protection apparatusA,B;A,B of another fluid-conducting line. The protective-conductor concept according to the invention improves safety for the patient and makes it possible to test the protective-conductor connection in a simple manner.

Circuit for connecting a protective conductor to at least two liquid-conveying lines and method for checking a protective conductor connection

The invention relates to a connecting piece for establishing a fluid connection between fluid-conducting lines for installation in a cut-out in a housing part of a medical device, in particular a dialysis unit. Furthermore, the invention relates to a medical device, in particular a dialysis unit, comprising a housing that comprises a housing part having a cut-out into which a connecting piece of this type is inserted. The connecting pieceaccording to the invention comprises a tubular bodythat is made of an electrically conductive material and can be inserted into the cut-outin the housing partA, the end piecesof which body are designed for the attachment of the fluid-conducting lines. The connecting pieceis distinguished by a terminal partfor attaching an electrical protective conductor or equipotential bonding system, the terminal partbeing electrically conductively connectable or connected to the tubular body. The terminal partallows an electrical connection cableto be directly attached to a protective conductor(PE conductor).

Connection piece for producing a liquid connection between liquid-conveying lines, and medical appliance with such a connection piece

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Schonungen, Germany

Paul Aschenbrenner