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Related Experiment Videos

Lithium/carbon monofluoride (Li/CFx): a new pacemaker battery

W Greatbatch1, C F Holmes, E S Takeuchi

  • 1Wilson Greatbatch Ltd., Clarence, New York 14031, USA.

Pacing and Clinical Electrophysiology : PACE
|November 1, 1996
PubMed
Summary

New lithium/CFx batteries offer higher power for advanced pacemakers. These batteries provide higher current densities and reduced weight, improving upon current lithium/iodine systems for medical device applications.

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Area of Science:

  • Biomedical Engineering
  • Materials Science
  • Electrochemistry

Background:

  • Pacemaker technology advancements require batteries with higher current densities and energy density.
  • Current lithium/iodine batteries face limitations in meeting the demands of advanced pacemaker functions.
  • There is a need for improved battery systems that are compatible with miniaturized medical devices.

Purpose of the Study:

  • To evaluate the lithium/CFx battery system as a potential alternative for advanced pacemaker applications.
  • To assess the performance of lithium/CFx batteries in delivering high current densities at useful voltages.
  • To determine the suitability of lithium/CFx batteries for integration into next-generation pacemakers.

Main Methods:

  • Design and fabrication of lithium/CFx battery cells.

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  • Testing of battery performance, including current delivery and voltage stability.
  • Evaluation of material compatibility, specifically with titanium casing.
  • Comparison of volumetric energy density and weight with existing lithium/iodine systems.

    • Main Results:

    • The lithium/CFx system demonstrated the ability to deliver currents in the milliampere range without significant voltage drop.
    • Compatibility with titanium casing was confirmed, enabling a 50% weight reduction compared to lithium/iodine batteries of the same size.
    • The developed cells showed suitability for advanced pacemaker applications based on laboratory testing.

    Conclusions:

    • The lithium/CFx battery system presents a viable and advantageous alternative for advanced pacemaker power sources.
    • This technology addresses the need for higher power capabilities and reduced device weight in modern pacemakers.
    • Further development and integration of lithium/CFx batteries can support the evolution of miniaturized and high-performance medical implants.