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Rotor for a fluid pump and method and mold for the production thereof

A technology of rotors, blood pumps, applied in parts of pumping devices for elastic fluids, axial flow pumps, household appliances, etc.

Pending Publication Date: 2018-01-05
ECP ENTWICKLUNGSGMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In this case, particular challenges arise with regard to the compressibility of the rotor and its small size

Method used

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  • Rotor for a fluid pump and method and mold for the production thereof
  • Rotor for a fluid pump and method and mold for the production thereof
  • Rotor for a fluid pump and method and mold for the production thereof

Examples

Experimental program
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Embodiment Construction

[0086] figure 1 Shown is a cross-section of a patient's heart 1 with multiple ventricles, the ventricle 2 of which is connected to the aorta 12 . A catheter 4 projects through the aorta 12 into the ventricle 2 , a pump head 3 with a rotary pump being arranged at the end of the catheter 4 . The rotary pump can be driven by a rotary shaft 6 , which runs through the conduit 4 , said shaft being connected to a pump rotor 42 within the pump head 3 . The pump rotor rotates within a housing (not shown in greater detail) of the pump head 3 .

[0087] The flexible shaft 6 is connected to a motor 7 which is arranged, for example, outside the patient's body. The torque can be transmitted to the shaft 6 , for example, via magnetic coupling of the motor 7 in both directions of rotation 8 , 9 .

[0088] The catheter 4 is usually ported into the aorta 12 and therein from outside the body, through the skin and tissue and the vessel wall.

[0089] The pump draws blood into the ventricle 2 ...

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Abstract

The invention relates to a rotor for a compressible fluid pump, in particular a blood pump that can be introduced through a blood vessel into a patient's body, wherein said rotor comprises one or moreconveying elements (15), is compressible and expandable between a first compressed state and a second radially expanded state, is made at least partially from a plastic reinforced with reinforcing elements, in particular fibers (10, 11, 13, 18, 19, 55, 56, 62, 63) and is provided for rotation about an axis of rotation (14). According to the invention, the rotor is tensioned in the first, compressed state and free from external stresses in the second, expanded state. A third state exists, which the rotor (42) occupies in the operating state under load. The reinforcing elements, in particular fibers, extend in the rotor in the third state at least in sections in a stretched manner.

Description

technical field [0001] The present application belongs to the field of mechanics, in particular, to rotors for fluid pumps. It can be used particularly advantageously in the field of medical engineering with regard to catheter pumps. Background technique [0002] In the field of fluid pumps, rotary lobe pumps in the form of axial pumps or radial pumps are known in various embodiments. In both cases, the fluid to be conveyed is accelerated axially or radially by the rotation of the rotor and of the impeller elements fastened to said rotor. [0003] Pumps of this type may also already be compressed in accordance with the prior art in order to arrange or transport them in a space-saving manner. This applies in particular to catheter pumps used in medical applications, which are often radially compressed and expanded so that they can be transported through a catheter or lumen in the patient to the site of application and then deployed at the site of application before they can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M1/10A61M1/12A61M60/13A61M60/226A61M60/237A61M60/808A61M60/81
CPCA61M60/414A61M2207/10A61M60/808A61M60/81A61M60/237A61M60/13A61M60/226B29C45/16A61M2207/00B29L2031/7496A61M60/148A61M60/205A61M60/135B29C45/2708B29C45/7207B29L2031/7498F04D3/02F04D29/026F04D29/181
Inventor 托斯顿·西斯马里奥·谢科尔
Owner ECP ENTWICKLUNGSGMBH