1
Siess Torsten Dipl Ing, Reul Helmut Prof Dr, Hutzenlaub Jens, Rau Guenter Prof Dr, Brown Peter: Improved cannula device. Impella Cardiotech, May 19, 1999: EP0916359-A1 (59 worldwide citation)

A cannula for use as for example on the inflow end of an implantable intravascular heart pump. The stiffness of the cannula is differentiated along its length, wherein its proximal end is stiffer than its distal end, while a substantially constant wall thickness is maintained along its entire length ...


2
Rau Gunter Prof Dr, Engelhardt Harald Dipl Ing, Reul Helmut Prof Dr: Means for measuring the partial pressure of gases and gas mixtures dissolved in a fluid.. Siemens, January 7, 1988: EP0251027-A2 (4 worldwide citation)

The means comprises a catheter (1) which can be inserted in the fluid (B) and contains a carrier fluid (3). The gases released in the fluid (B) can be diffused through the catheter wall into the carrier fluid (3). To ensure that this occurs, the catheter is designed as a double-cavity coaxial cathet ...


3
Knoch Martin Dr Ing, Reul Helmut Prof Dr Ing, Rau Gunter Prof Dr Rer Nat: Heart valve prosthesis.. Braun Melsungen, March 7, 1990: EP0356647-A1 (2 worldwide citation)

In a heart valve prosthesis in which the inner surface (10a) of the valve ring (10) narrows continuously in the direction of flow, there is provided a special mounting of the closing elements (11). Sector-shaped recesses (18) are located in the valve ring (10), and into each of them an elongate moun ...


4
Knoch Martin Dr Ing, Reul Helmut Prof Dr Ing, Rau Gunter Prof Dr Rer Nat: Heart valve prostesis.. Braun Melsungen, July 27, 1988: EP0275951-A1 (1 worldwide citation)

Der Klappenring (10) hat eine Innenfläche (10a), deren Öffnungsquerschnitt sich in Strömungsrichtung stetig verringert. Der Klappenring hat die Form einer Düse, wobei nur am Düsenende ein Strömungsabriss erfolgt, der einen achsparallelen Strömungsaustritt gestattet und eine Wirbelbildung am Strahlra ...


5
Knoch Martin Dr Ing, Reul Helmut Prof Dr Ing, Rau Gunter Prof Dr Rer Nat: Heart valve prosthesis.. Braun Melsungen, February 28, 1990: EP0355323-A1 (1 worldwide citation)

Bei der Herzklappenprothese sind die Lagerzapfen (16), mit denen der Schliesskörper (12) im Klappenring (10) gelagert ist, in Durchgangslöchern (17) des Klappenrings (10) enthalten und in diesen Durchgangslöchern in unterschiedliche Stellungen bewegbar. Dadurch tritt eine Umspülung der Lagerzapfen ( ...


6
Reul Helmut Prof Dr Ing, Autschbach Ruediger Prof Dr Me, Cattaneo Giorgio Dipl Ing: Intravenous oxygenator. Novalung, April 16, 2008: EP1911475-A2

Intravenous oxygenator comprises a fibre bundle. The fibres are connected to a gas supply via a primary connection and to a gas outlet via a secondary connection. The bundle is twisted about a longitudinal axis of the oxygenator during operation, by rotation of the first connections relative to the ...


7
Knierbein Bernd Dr Ing, Reul Helmut Prof Dr Ing, Rau Guenter Univ Prof Dr Rer N: Displacement pump for pumping blood.. Forschungsgesellschaft Fuer Bi, November 21, 1991: EP0457074-A1

A displacement pump for pumping blood and a method for its production are described. The pump comprises a pump housing (1) in which the housings of the intake flap (4) and the outlet flap (5) are integrated in a seamless manner. In this way, seam positions and joints, with their disadvantageous effe ...


8
Kaufmann Ralf Dipl Ing, Reul Helmut Prof Dr Ing, Rau G Prof Dr Rer Nat, Bitdinger Ralf Dipl Ing: Pulsating blood pump.. Forschungsgesellschaft Fuer Bi, March 17, 1993: EP0531856-A2

In a blood pump casing (43) at least one piston (21a,21b) is disposed which is driven from a coupling point (19a,19b) on a triangular closed hypocycloidal track (Za,Zb), and which periodically compresses and releases a blood chamber (37a,37b). The one corner of the closed triangular hypocycloidal tr ...


9
Knoch Martin Dr Ing, Reul Helmut Prof Dr Ing, Rau Gunter Prof Dr Rer Nat: Heart valve prosthesis.. Braun Melsungen, August 10, 1988: EP0277527-A1

Ein Nachteil der bekannten zweiflügeligen Klappenprothesen besteht darin, dass die Strömung in voll geöffneter Stellung entweder an den Anströmkanten der Schliesskörper oder im Bereich einer von den Schliesskörperflächen begrenzten Düse abreisst. Der entstehende Strahl legt sich wahllos wieder an ei ...


10
Knoch Martin Dr Ing, Reul Helmut Prof Dr Ing, Rau Gunter Prof Dr Rer Nat: Heart valve prosthesis.. Braun Melsungen, August 10, 1988: EP0277528-A1

Ein Nachteil der bekannten einflügeligen Klappenprothesen besteht darin, dass die Strömung in voll geöffneter Stellung zur Erzeugung eines ausreichenden Öffnungsmoments einseitig abgelenkt werden muss und dass hieraus eine Richtungsänderung des Impulsstroms resultiert. Die Folge sind hohe Druckverlu ...