Fluid pump having at least one impeller blade and a support device

A technology of impeller blades and support devices, applied in axial flow pumps, components of pumping devices for elastic fluids, circulation auxiliary devices, etc., can solve problems such as application

Active Publication Date: 2012-09-05
ECP ENTWICKLUNGSGMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] A particular problem in this respect is that the impeller blades are usually fastened to the central neck and are rotatably driven and movably pivoted there; the impeller blades must therefore be flexible, but on the other hand also Have a certain stiffness or limited mobility to apply the required pressure to the fluid being conveyed

Method used

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  • Fluid pump having at least one impeller blade and a support device
  • Fluid pump having at least one impeller blade and a support device
  • Fluid pump having at least one impeller blade and a support device

Examples

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Embodiment Construction

[0061] figure 1 A three-dimensional view showing the rotating elements of a fluid pump, in particular a micropump, for axially transporting blood, such as is typically used in medically assisting the human heart. Such a pump is mounted, for example, at the end of a hollow catheter and, when introduced through the blood vessel into the ventricle, guides blood under pressure from the chambers of the heart into the blood vessel. To this end, the rotating elements rotate at thousands of revolutions per minute to achieve the required conveying capacity. The impeller blade 1 is helical, is connected to the neck 2 in the region of the axis of rotation 3 and is supported outwardly by a support means 4 in the form of a tubular sleeve to which the outer edge of the impeller blade 1 is connected.

[0062] The neck 2 is typically connected to a drivable shaft which extends through a hollow catheter and blood vessel to a motor drive which can typically be placed outside the body. A gate ...

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PUM

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Abstract

The invention relates to a fluid pump comprising at least one impeller blade (1, 1', 1'') which is rotatable about an axis of rotation (3) and conveys a fluid in operation and comprising a support device (4, 6, 7, 8, 9, 10, 12, 12', 13, 13', 14, 14', 15, 17) which supports the at least one impeller blade (1, 1', 1'')in at least one support region, wherein the support device is changeable between a first state in which the rotor is radially compressed and a second state in which the rotor is radially expanded; and wherein at least one impeller blade extends at least partly radially inwardly with respect to the axis of rotation (3) from the support region / support regions in the radially expanded state of the rotor.

Description

technical field [0001] The present invention is in the field of mechanical engineering, in particular micromechanics, and discusses fluid pumps that work with rotating impeller blades and are specially configured for use in hard-to-reach areas. Background technique [0002] Pumps of this type can be used, for example, in the medical field and, for this purpose, can also have a particularly small design. [0003] A special application of micropumps is, for example, assisting the pumping force of the human heart. Pumps used in this field are usually introduced into the body through blood vessels and operate selectively within the chambers of the heart. [0004] A variety of such pumps are known in different configurations. An axial flow pump is known in WO 98 / 53864 and likewise in EP 1 738 783 A1, which in each case has a rotating element of the rigid shaft type provided with impeller blades and the The shaft is externally journalled in the fixed element. The drives can be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M1/10A61M1/12F04D29/24F04D29/30F04D29/38A61M60/13A61M60/237A61M60/416A61M60/806A61M60/808A61M60/825
CPCA61M2205/0266A61M5/14236A61M2205/0244F04D29/181A61M60/414A61M60/148A61M60/808A61M60/237A61M60/416A61M60/13A61M60/806A61M60/825F04D19/00F04D29/528
Inventor 约尔格·舒马赫丹尼尔·勒恩
Owner ECP ENTWICKLUNGSGMBH
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