Proceedings of the KOSOMBE Conference (대한의용생체공학회:학술대회논문집)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
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Development of an Interventricular Pressure Measurement System or the Korean Total Artificial Heart

한국형 인공심장내의 심실간 압력 측정시스템의 개발

  • Choi, S.W. (Dept. of Biomedical Engineering, College of Medicine, Seoul National University Hospital) ;
  • Ahn, J.M. (Dept. of Biomedical Engineering, College of Medicine, Seoul National University Hospital) ;
  • Jo, Y.H. (Dept. of Biomedical Engineering, College of Medicine, Seoul National University Hospital) ;
  • Om, K.S. (Dept. of Biomedical Engineering, College of Engineering, Seoul National University) ;
  • Min, B.G. (Dept. of Biomedical Engineering, College of Medicine, Seoul National University Hospital)
  • Published : 1997.11.28
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Abstract

In the development of the totally implantable artificial heart (TAH), the information of the preload condition is important to ind appropriate condition or the automatic control of the heart. Our TAH configuration consists of two artificial ventricles, and brushless DC motor within actuator. The pressure between ventricles could indicate the preload condition during the TAH operation. If we can measure accurately inspite of the noise induced from TAH and environmental condition. We suggested integrating a feedback loop to remove an unexpected DC drift. NPI 19-series Nova sensor was used which could measure pressure in gas and liquid. This method and sensor enabled us to develop the pressure transducer compact so (that) the systems can be implanted with TAH into patient. This system has been verified in vitro and in vivo test. This results showed that the output waveform of this system was stable irrespective of animal condition.

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