blood pump

The blood pump addresses inefficiencies in torque generation and energy consumption by employing non-radially extending columns and discontinuous soft magnetic materials, resulting in improved efficiency and reduced size for intravascular use.

JP7888664B2Active Publication Date: 2026-07-13ABIOMED EUROPE GMBH
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Patent Information

Application Number
JP2024117697
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2019-03-19
Filing Date
2024-07-23
Publication Date
2026-07-13
Estimated Expiration
2040-03-13

AI Technical Summary

Technical Problem

Current blood pumps suffer from significant parasitic magnetic flux loss due to radially extending head portions on the shafts of the drive unit, leading to inefficient torque generation and increased energy consumption.

Method used

The blood pump design features columns with impeller-side ends that do not extend radially over the coil windings, utilizing spacers and discontinuous soft magnetic materials to maintain distance and reduce magnetic flux loss, thereby enhancing torque efficiency and reducing energy consumption.

Benefits of technology

This design increases the torque-to-axial force ratio and minimizes energy consumption, making it suitable for long-term, battery-powered applications with reduced heat generation and overall pump size.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

To provide an intravascular blood pump for percutaneous insertion into a patient's blood vessel.SOLUTION: The blood pump comprises an impeller 3 arranged to be rotatable about an axis of rotation 10. The impeller 3 has blades 31 sized and shaped for conveying blood from a blood flow inlet to a blood flow outlet. The blood pump comprises a drive unit 4 for rotating the impeller 3, the drive unit 4 comprising a plurality of posts 40 arranged about the axis of rotation 10. Each of the posts 40 has a longitudinal axis LA and an impeller-side end 420, the impeller-side end 420 pointing towards the impeller 3. A coil winding 44 is disposed around each of the posts 40. The coil winding 44 has an impeller-side end 424 pointing towards the impeller 3. The impeller 3 comprises a magnetic structure 32 arranged to interact with a rotating magnetic field so as to cause rotation of the impeller 3.SELECTED DRAWING: Figure 2
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Citation Information

Patent Citations

  • Blood pump

    EP3222301A1

  • intracardiac blood pump

    JP2000512191A

  • Blood pump

    JP2003052811A

  • Centrifugal type pump apparatus

    JP2010136862A