A SURVEY OF IN VIVO ENERGY SOURCES.
BIAC Information Module M9,
AMERICAN INST OF BIOLOGICAL SCIENCES WASHINGTON D C BIOINSTRUMENTATION ADVISORY COUNCIL
Pagination or Media Count:
Recent engineering advances in medicine have permitted the application of various protheses for the correction of physiological defects. Such devices as cardiac pacemakers, diaphragm stimulators, and artificial limbs have been greatly improved in effectiveness. Long term implants of electronic gadgetry have also become relatively commonplace in the biomedical community as a means for measuring several physiological parameters in situ. In both cases cited above, the power supply plays a vital role--because of its impact on the volume and life of the device. Although miniature batteries are doing an effective job in these applications, their two- or three-year life requires surgical procedure for replacement. To reduce this, other energy sources are being investigated. One approach is to use the body during its normal functioning to drive an electric power source. Bioelectric potentials, muscle motions, and implanted fuel cells are some of the approaches being investigated with varying degrees of success. Another approach is to transmit the power through the skin by inductive coupling or in the form of radio frequency energy. This technique relieves the problems of battery life since the power pack is external and can be easily replaced. Author
- Electric Power Production and Distribution
- Biomedical Instrumentation and Bioengineering