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Design and performance of heart assist or artificial heart control systemsThe factors leading to the design of a controlled driving system for either a heart assist pump or artificial heart are discussed. The system provides square pressure waveform to drive a pneumatic-type blood pump. For assist usage the system uses an R-wave detector circuit that can detect the R-wave of the electrocardiogram in the presence of electrical disturbances. This circuit provides a signal useful for synchronizing an assist pump with the natural heart. It synchronizes a square wave circuit, the output of which is converted into square waveforms of pneumatic pressure suitable for driving both assist device and artificial heart. The pressure levels of the driving waveforms are controlled by means of feedback channels to maintain physiological regulation of the artificial heart's output flow. A more compact system that could achieve similar regulatory characteristics is also discussed.
Document ID
19780015089
Document Type
Conference Paper
Authors
Webb, J. A., Jr. (NASA Lewis Research Center Cleveland, OH, United States)
Gebben, V. D. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1978
Publication Information
Publication: NASA, Washington Fourth Inter-Center Control Systems Conf.
Subject Category
AEROSPACE MEDICINE
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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