Abstract
The technique of electrically stimulating thethoracic diaphragm is conducted by implanting a diaphragmaticpacemaker, in which the phrenic nerve is stimulated, resulting instimulating the diaphragm. A diaphragmatic pacemaker isusually implanted for a long period of time. Intramuscularelectrodes can be used for stimulating the diaphragm, for suchconditions in which phrenic nerve stimulation cannot be done.The material and inter-distance of the stimulation electrodes arevery important in order to stimulate the diaphragm in efficientmanner. This paper explains the Optimization of material, interdistanceand temperature effect of intramuscular electrodes usedto stimulate the thoracic diaphragm. A model has beenconstructed and simulated on the software COMSOL Multiphysics,whose results shows that the threshold musclestimulation is achieved when 1 volt is applied at the electrode, 15cm apart from each other. The result further suggested that thiskind of electrical stimulation cannot produce significant thermaleffect on the tissues.
Highlights
Thoracic diaphragm is an internal skeletal muscle which spreads at the end of the rib cage
The simulation results show that electrical stimulation of the electrodes did not produce any thermal effect in the surrounding tissues
The process of diaphragm/phrenic nerve pacing can be done by inserting electrodes into the diaphragm [3]
Summary
Thoracic diaphragm is an internal skeletal muscle which spreads at the end of the rib cage. In the Karlsruhe transactions on biomedical engineering, volume 15, Julia Bohnert [2], has mentioned her study upon the effects of time-varying magnetic fields in the frequency range 1 kHz to 100 kHz upon the human body, in which many dielectric properties within a human body have been observed, which includes the resulting current densities within the model of the skeletal muscle. Their main emphasis is the change of frequencies and their effect on the human body. The simulation results show that electrical stimulation of the electrodes did not produce any thermal effect in the surrounding tissues
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