Journal of Artificial Organs

, Volume 5, Issue 4, pp 0239–0245 | Cite as

Development of an electrostatic generator for a cardiac pacemaker that harnesses the ventricular wall motion

  • R. Tashiro
  • N. Kabei
  • K. Katayama
  • E. Tsuboi
  • K. Tsuchiya
ORIGINAL ARTICLE

Abstract

 A variable-capacitance-type electrostatic (VCES) generator that harnesses ventricular motion was developed with the aim of driving a cardiac pacemaker permanently without a battery. The developed model of the VCES generator was handmade, but it was too large to implant into the thoracic cavity of a laboratory animal. For this reason, to demonstrate its feasibility, a somewhat complicated method that measured the left ventricular wall motion by means of the accelerometer module put on the free wall and reproduced the motion in real time with a vibration mode simulator was used. The VCES generator was vibrated on the simulator, and its generated power was supplied to the cardiac pacemaker, which then stimulated the heart. A mean power of approximately 36 μW was generated, which was enough to drive the cardiac pacemaker. Continuous electric generation and cardiac pacing were performed successfully for more than 2 h in the animal experiment.

Key words Electrostatic generator Electric generator Bioenergy Cardiac motion Resonance Cardiac pacemaker 

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Copyright information

© The Japanese Society for Artifical Organs 2002

Authors and Affiliations

  • R. Tashiro
    • 1
  • N. Kabei
    • 1
  • K. Katayama
    • 2
  • E. Tsuboi
    • 2
  • K. Tsuchiya
    • 3
  1. 1.Saitama Cardiovascular and Respiratory Center, 1696 Itai, Konan, Ohsato, Saitama 360-0105, Japan Tel. +81-48-536-9900 (ext. 2851); Fax +81-48-536-5034 e-mail: GBH01730@nifty.ne.jpJP
  2. 2.Terumo Corporation, Kanagawa, JapanJP
  3. 3.Waseda University, Tokyo, JapanJP

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