Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Toward a durable impeller pump with mechanical bearings.

K X Qian1, Pei Zeng, W M Ru

  • 1Institute of Biomedical Engineering, Department of Biomedical Engineering, Jiangsu University of Science and Technology, Zhenjiang, China.

ASAIO Journal (American Society for Artificial Internal Organs : 1992)
|June 13, 2002
PubMed
Summary

This study introduces an improved impeller pump for long-term animal circulation support. Enhanced bearings and a purge system prevent wear and thrombus formation, extending device longevity and reliability.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Harnessing Plasmonic Heating for Switching in Antiferromagnets.

Physical review letters·2026
Same author

Breaking Surface-Plasmon Excitation Constraint via Surface Spin Waves.

Physical review letters·2024
Same author

Bath-Induced Spin Inertia.

Physical review letters·2024
Same author

Nonlinear Topological Magnon Spin Hall Effect.

Physical review letters·2023
Same author

Twisted Magnon Frequency Comb and Penrose Superradiance.

Physical review letters·2022
Same author

[Statistical methods for relative risk estimation and applications in case-cohort study].

Zhonghua liu xing bing xue za zhi = Zhonghua liuxingbingxue zazhi·2022

Area of Science:

  • Biomedical Engineering
  • Medical Devices
  • Cardiovascular Research

Background:

  • Previous impeller pumps faced limitations due to mechanical bearing wear and thrombosis.
  • Magnetic bearings introduced design complexity, high energy use, and lower reliability.

Purpose of the Study:

  • To develop a more reliable and durable impeller pump for long-term circulation support in experimental animals.
  • To overcome the limitations of previous bearing systems and prevent thrombus formation.

Main Methods:

  • Implemented a novel rolling bearing system with a wear-resistant ultra-high molecular weight polythene roller.
  • Introduced a special purge system for continuous saline-heparin infusion through the bearing.
  • Conducted animal experiments to validate the efficacy of the improvements.

Related Experiment Videos

Main Results:

  • The new rolling bearing system demonstrated a service life exceeding 10 years.
  • The purge system effectively prevented thrombus formation with 30 ml/hour infusion.
  • The improved impeller pump ran continuously for 8 months with no measurable bearing wear.
  • The fully implantable device (150g) achieved 9L/min blood flow, 24.7% efficiency, and consumed 9.6 watts.

Conclusions:

  • The enhanced impeller pump design significantly improves longevity and reliability for long-term circulation support.
  • The combination of a durable rolling bearing and a purge system effectively addresses previous failure modes.
  • This advanced device offers a promising solution for extended experimental animal circulation support.