Transcutaneous, dual channel phrenic nerve stimulator for diaphragm pacing
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An electrical stimulation system for bilateral diaphragm pacing was constructed. The stimulator instrument comprises a transmitter and two implantable receivers and nerve electrodes. An optimised transcutaneous link system is described which utilises a radio frequency coupling to transmit both power and stimulus information to the receiver. The receiver unit was constructed in thick-film hybrid technology using bipolar and c.m.o.s. circuits and was packaged in a hermetically sealed metal case. The construction of the transmitter allows a high reliability, low power consumption and flexibility of the stimulus parameter control. A complete, bilateral phrenic nerve pacing system was implanted into a patient suffering from tetraplegia. It is concluded that electrical phrenic nerve stimulation to pace the diaphragm is capable of being used in clinical therapy.
Key wordsDiaphragm pacing Electrode design Implantable electronics Transcutaneous energy transfer
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- Brummer, S. B. andTurner, M. J. (1977) Electrochemical considerations for safe electrical stimulation of the nervous system with platinum electrodes.IEEE Trans.,BME-24, 59–63.Google Scholar
- Dymond, A. M. (1976) Characteristics of the metal-tissue interface of stimulation electrodes.IEEE Trans.,BME-23, 274–280.Google Scholar
- Glenn, W. W. L., Hogan, J. F. andPhelps, M. L. (1980) Ventilatory support of the quadriplegic patient with respiratory paralysis by diaphragm pacing.Surg. Clin. N. America,60, 1055–1078.Google Scholar
- Kaneyuki, T., Hogan, J. F., Glenn, W. W. L. andHolcomb, W. G. (1977) Diaphragm pacing: evaluation of current waveforms for effective ventilation.J. Thor. Cardiovasc. Surg.,74, 109–115.Google Scholar
- Ko, W. H., Liang, S. P. andFung, C. D. F. (1977) Design of radio-frequency powered coils for implant instruments.Med. & Biol. Eng. & Comput.,15, 634–640.Google Scholar
- Rushton, W. A. H. (1934) A physical analysis of the relation between threshold and interpolator length in the electric excitation of medullated nerve.J. Physiol.,82, 332–352.Google Scholar
- Sarnoff, S. J., Maloney, J. V., Sarnoff, L. C., Ferris, B. G. andWhittenberger, J. L. (1950) Electrophrenic respiration in acute bulbar poliomyelitis. JAMA 143 (16), 1383–1390.Google Scholar
- Sarnoff, S. J., Sarnoff, L. C. andWhittenberger, J. L. (1951) Electrophrenic respiration VII. The motor point of the phrenic nerve in relation to external stimulation.Surg. Gynecol. Obstet.,93, 190–195.Google Scholar
- Talonen, P., Baer, G., Markkula, H. andMalmivuo, J. (1980) Implantable, externally controlled nervus phrenicus stimulator for tetraplegic patients. Research report 12/1980 Electronics Laboratory, Tampere University of Technology, Finland.Google Scholar
- Talonen, P., Malmivuo, J., Baer, G. andMarkkula, H. (1982) A clinical application of the phrenic nerve stimulator.In Proc. III Prog. Rep. Symp. Med. Phys. and Med. Eng., 1981,Patomäki, L. andViitanen, J. (Eds.), Kuopio, Finland.Google Scholar
- Terman, F. E. (1943)Radio engineers' handbook. McGraw-Hill, New York and London.Google Scholar