PUMP, ESPECIALLY BLOOD PUMP

DK4205797T3Active Publication Date: 2026-06-29ECP ENTWICKLUNGSGMBH
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Patent Information

Authority / Receiving Office
DK · DK
Patent Type
Patents
Current Assignee / Owner
ECP ENTWICKLUNGSGMBH
Filing Date
2014-10-31
Publication Date
2026-06-29

AI Technical Summary

Technical Problem

Existing blood pumps face challenges in maintaining efficiency and minimizing damage during compression and expansion, particularly due to the interaction between the pump housing, drive shaft, and conveying element, which can lead to rotor damage and inefficient operation over extended periods.

Method used

The design incorporates helically running structures that generate a torque counter to the compression direction, aligning with the rotor's rotation direction to facilitate folding and unfolding, and uses memory shape materials like nitinol, with specific flexural rigidity adjustments in the pump housing and drive shaft to ensure concentric mounting and reduce mechanical stress.

Benefits of technology

This configuration enhances the pump's efficiency, reduces the risk of damage to the rotor, and allows for longer-term operation by managing torque and mechanical loads effectively, ensuring stable performance even under alternating bending stresses.

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Abstract

The subject matter of the present application is a pump, in particular a blood pump, with a proximal and a distal end and a pump housing arranged between them, a drive shaft arranged in an interior of the pump housing along a longitudinal direction, a conveying element arranged on the drive shaft, wherein the conveying element comprises at least one flexible segment which is designed such that a direction of rotation of the conveying element causes a conveyance of a fluid from the distal to the proximal end of the pump;and the pump housing is designed such that, when subjected to a force acting towards the proximal end of the pump, the pump housing can be at least partially transformed into a cannula, and is thereby transformed from an expandable state to a compressed state at least along a radial direction transverse to the longitudinal direction, wherein an unfolding direction of the at least one flexible segment when transforming the pump housing from the compressed to the expanded state is directed against the direction of rotation.
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