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Related Experiment Videos

The Hemopump--a new cardiac prothesis device.

K C Butler1, J C Moise, R K Wampler

  • 1Nimbus, Inc., Rancho Cordova, CA 95670.

IEEE Transactions on Bio-Medical Engineering
|February 1, 1990
PubMed
Summary

The Hemopump is a novel temporary left ventricular assist blood pump. Clinical trials show this innovative device, implanted minimally invasively, is safe and effective.

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Area of Science:

  • Cardiovascular Engineering
  • Biomedical Devices
  • Minimally Invasive Surgery

Background:

  • Temporary left ventricular assist devices (LVADs) are crucial for managing heart failure.
  • Existing LVADs often require complex surgical implantation.
  • A need exists for less invasive, temporary circulatory support systems.

Purpose of the Study:

  • To introduce the Hemopump, a novel transvalvular axial flow blood pump.
  • To describe the design and implantation method of the Hemopump.
  • To report initial clinical trial findings on the Hemopump's safety and efficacy.

Main Methods:

  • The Hemopump utilizes a miniature 7 mm axial flow pump.
  • It is delivered percutaneously via a catheter-like sheath through the femoral artery.
  • Power is transmitted from an external motor via a flexible cable.

Main Results:

  • The Hemopump is placed transvalvular across the aortic valve, pumping blood from the left ventricle to the aorta.
  • Development overcame significant challenges in hydraulic design, bearings, seals, materials, and fabrication.
  • Early clinical trial results indicate successful management of challenges and positive outcomes.

Conclusions:

  • The Hemopump represents a significant advancement in temporary LVAD technology.
  • Its minimally invasive approach reduces surgical burden.
  • Clinical data suggests the Hemopump has the potential for widespread clinical adoption as a safe and effective device.

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