Berlin Heart Gmbh

Kurt Graichen

Andreas Arndt

Peter Nüsser

Hans-Erhard Peters

Jörg Müller

Peter Nuesser

Manfred Göllner

Werner Neumann

Johannes Mueller

Joerg Mueller

Leonid Choub

Conrad Kauffeldt

Jan Hoffmann

Nedim Arslan

Norbert Buske

Tobias Merkel

Johannes Müller

Peter N&uuml;sser

Johannes M&uuml;ller

Ali Kilic

Dietmar Ries

Klaus Wunderlich

Frank Deus

Joerg Müller

Peter Göttel

Andrcas Arndt

Peter NÜSSER

A method and a device for the measurement of one or more fluid-mechanically effective parameters of a fluid, with a fluid pump which comprises a delivery element which is mounted in a magnet bearing, and the delivery element of the fluid pump is excited into an oscillation by way of an excitation device, wherein the oscillation parameters as well as, as the case may be, the oscillation behaviour is measured, and parameters of the fluid are determined from this.

Device and a method for measuring fluid-mechanically effective material parameters of a fluid

Device and a method for measuring fluid&#x2014;mechanically effective material parameters of a fluid

The present application relates to a blood pump, preferably for assisting a heart, wherein the blood pump comprises a housing with a distal inlet, a proximal inlet, and a mandrel arranged between the inlet and the outlet. A rotor with blading is arranged on the mandrel coaxially and rotatably. The rotor is mounted on the mandrel magnetically in an axial direction. In one embodiment the outlet is situated proximally to a proximal end of the blading of the rotor.

Blood pump, preferably for assisting a heart

A cardiac assistance system is provided that comprises two pumps and cannulae connected thereto. A first pump of the two pumps is configured to connect to a right heart system via a first fluid channel. The first fluid channel formed at least partially by a first two cannulae of the cannulae. A second pump of the two pumps is configured to connect to a left heart system via a second fluid channel. The second fluid channel formed at least partially by a second two of the cannulae. The two pumps are configured as rotary pumps for arrangement outside a patient's body.

Cardiac assistance system having two pumps

A blood pump has a hollow body in which an impeller with a spiral blading produces an axial propulsion of blood along the impeller, as well as an at least partly actively stabilized magnetic bearing device and a hydrodynamic bearing device for the impeller. The impeller may be set into a rotation about a rotation axis of the impeller with a motor stator located outside the hollow body. The hollow body has an inlet for the flow of blood into the hollow body in an inflow direction which is essentially parallel to the rotation axis, and an outlet for the outflow of the blood out of the hollow body in an outflow direction which is offset to the rotation axis of the impeller to produce a non-zero outflow angle (&#x3b1;) between the inflow direction and the outflow direction. A total artificial heart can be formed from two such blood pumps.

Blood pump

A blood pump includes a hollow body in which an impeller with blading is provided for producing an axial propulsion of blood along the impeller. An at least partly actively stabilized magnetic bearing device is provided wherein the impeller may be set into a rotation about a rotation axis of the impeller, with a motor stator. The hollow body has an inlet for the flow of blood into the hollow body in an inflow direction which is essentially parallel to the rotation axis, and an outlet for the outflow of the blood out of the hollow body in an outflow direction.

A method and a device for the measurement of fluid-mechanically effective parameters of a fluid, with a fluid pump which comprises a delivery element () which is mounted in a magnet bearing (), according to the invention, envisages the delivery element () of the fluid pump being excited into an oscillation by way of an excitation device (), wherein the oscillation parameters as well as, as the case may be, the oscillation behavior is measured, and parameters of the fluid are determined from this.

A rotary pump includes a rotor having delivery elements which deliver at least a portion of a fluid in an axial direction of the rotor. Two delivery elements or groups of delivery elements are provided on the rotor for delivering the fluid, and deliver the fluid to be delivered in mutually opposing axial directions of the rotor, so that the axial thrust components substantially compensate each other. The fluid flows flowing counter to each other jointly give way in the radial direction of the rotor and can be jointly discharged through the volute casing and utilized.

Rotary pump comprising a rotor and delivery elements

A rotational pump capable of running at a rotational speed (n) having a system for direct or indirect measurement of pressure difference or flow rate across the pump, wherein a control system is designed to calculate an index of pulsatility (PI) of the pressure difference or flow rate, estimating the gradient of PI with respect to the rotational speed (dPI/dn) and regulating the dPI/dn to a pre-defined set-point or regulating the pump in a way that the dPI/dn is minimal.

Rotational pump and methods for controlling rotational pumps

A method and a device for the measurement of fluid-mechanically effective parameters of a fluid, with a fluid pump which comprises a delivery element () which is mounted in a magnet bearing (), according to the invention, envisages the delivery element () of the fluid pump being excited into an oscillation by way of an excitation device (), wherein the oscillation parameters as well as, as the case may be, the oscillation behaviour is measured, and parameters of the fluid are determined from this.

A device for axially conveying fluids, wherein the conveyor part thereof is entirely magnetically borne and the radial bearing thereof is provided with sufficient rigidity and efficiently dampened, whereby problems encountered when passing through critical speeds and the disadvantageous effects of hydrodynamic and mechanical imbalance of the rotor are avoided. The magnetic bearing is combined with a hydrodynamic bearing.

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Berlin, Germany

Kurt Graichen