Abstract:
A ventricular assist device includes a stent for placement within a cardiac artery and arranged for placement, the stent arranged to have an open configuration defining a flow path, a rotor sized to fit within the stent and arranged for percutaneous placement the flow path, the rotor including a surface disposed about a central portion and angled with respect to the flow path and having a first plurality of magnets. A collar is sized for placement about the cardiac artery and includes a stator. A power source is coupled to the stator, and the stator and the rotor are arranged to rotate the rotor about an axis. A timing control module controls a rotational speed of the rotor. Accordingly, the surface of the rotor is arranged to move blood along the flow path in response to rotation of the rotor.
Abstract:
A blood pump includes a hub having an axis of rotation and a generally cylindrical shape. The hub has an upstream end region, a central region, and a downstream end region, and the hub includes a magnetic material. Blades that are disposed on the downstream end region of the hub extend downstream of the hub.
Abstract:
The invention relates inter alia to a blood pump (1) having an axially tubular inlet (2), a tangential chamber (3) adjoining the axial inlet (2) and having a substantially radial outlet (18), an axial guide body (8; 45) connected to the outlet and/or to the tangential chamber, an impeller (9) supported on the guide body (8; 45) and having an inner surface (34) facing the guide body and an outer surface (33) as well as blading (20) arranged on the outer surface (33). In accordance with the invention, at least one part region (8.2; 8.1) of the guide body projects from the tangential chamber (3) into the inlet (2), wherein at least one section of the stator (12) transmitting a force onto the rotor (13) is arranged in the part region (8.1, 8.2). The impeller (9) is supported by a hydrodynamic radial bearing in the radial direction.
Abstract:
An implantable blood pump includes a housing defining an inlet opening and an outlet opening. Within the housing, a dividing wall defines a blood flow conduit extending between the inlet opening and the outlet opening of the housing. The blood pump has a rotary motor that includes a stator and a rotor. The stator is disposed within the housing circumferentially about the dividing wall such that the inner blood flow conduit extends through the stator.
Abstract:
The invention relates to a fluid pump device, in particular for the medical application, with a compressible pump housing (6) and rotor (7), as well as with an actuation means (8) which runs in the sleeve (4) and on whose end the fluid pump is arranged. In order to utilise all possibilities of a space-saving arrangement of the respective pump housing of the rotor, which is compressible per se, and as the case may be, a bearing arrangement, the mentioned elements are displaceable to one another in the axial direction compared to an operation position. In particular these elements may be end-configured by way of an axial movement of the drive shaft after the assembly.
Abstract:
Die Katheter-Vorrichtung umfasst eine Antriebswelle (4), die mit einem Motor (7) verbunden ist und einen Rotor (3.2), der am distalen Endbereich auf der Antriebswelle befestigt ist. Der Rotor weist eine Rahmenstruktur (3.2.1) auf, die aus einem schraubenförmigen Begrenzungsrahmen (3.2.2) und sich radial nach innen vom Begrenzungsrahmen erstreckenden Rotorstreben (3.2.3) ausgebildet ist. Die Rotorstreben sind mit ihren vom Begrenzungsrahmen entfernten Enden an der Antriebswelle befestigt. Zwischen dem Begrenzungsrahmen und der Antriebswelle erstreckt sich eine elastische Bespannung. Die Rahmenstruktur aus einem elastischen Material ist derart ausgebildet, dass sich der Rotor nach einer aufgezwungenen Kompression selbstständig entfaltet.
Abstract:
The invention relates to a blood pump having an impeller with a rotation axis in a pump housing, wherein the blood pump has an inlet and an outlet. According to the invention, the blood pump is characterized in that it contains at least two elements separated spatially from each other, at least one of the elements being configured such that it has a stabilizing effect on flow mechanics in a radial direction component, and in that at least one further element constitutes a radial magnetic bearing.
Abstract:
Es werden eine Pumpe und ein Verfahren zum Betreiben einer Pumpe vorgeschlagen, die eine kostengünstige, dabei berührungslose und verschleißfreie und somit äußerst dauerhafte Lagerung eines Schaufelrads ermöglichen. Die Erfindung greift hierzu auf eine Kombination aus Permanentmagnetlager und strömungsmechanischem Lager zurück. Die Lagerung beruht somit auf rein passiven Elementen ohne den Gebrauch aktiv gesteuerter und/oder geregelter Elemente. Ein weiterer Aspekt der Erfindung betrifft das Vorsehen eines Sensors zum Erfassen einer Axialverlagerung des Schaufelrads.