Chinese Journal of Tissue Engineering Research ›› 2011, Vol. 15 ›› Issue (13): 2390-2393.doi: 10.3969/j.issn.1673-8225.2011.13.026

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Flow control of intra aorta pump based on heart rate

Gu Kai-yun, Gao Bin, Chang Yu   

  1. School of Life Science and Bioengineering, Beijing University of Technology, Beijing 100124, China
  • Received:2010-12-06 Revised:2011-01-18 Online:2011-03-26 Published:2013-10-23
  • Contact: Chang Yu, Doctor, Associate professor, School of Life Science and Bioengineering, Beijing University of Technology, Beijing 100124, China changyu@bjut.edu. cn
  • About author:Gu Kai-yun★, Studying for master’s degree, School of Life Science and Bioengineering, Beijing University of Technology, Beijing 100124, China gukaiyun@emails. bjut.edu.cn
  • Supported by:

    the Funding Project for Academic Human Resources Development in Beijing University of Technology- Invonotion Team, No. 31500054R5001*; Funding Project for Academic Human Resources Development-211 Project-Cultivation of High-Level Talents in Beijing University of Technology, No. 01500054R8001*; the National Natural Science Foundation of China, No. 11072012*

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Abstract:

BACKGROUND: With the development of the research and application of artificial heart, people hope that it can accord with physiological mechanism of natural heart and meet demand of human body in device performance.
OBJECTIVE: For the control of intra-aorta pump, this paper proposed the flow control algorithm based on heart rate.
METHODS: Utilizing the PID control algorithm to maintain the output flow satisfy the physical needs of patients. Simulation results show the accuracy of the algorithm to achieve fast and stable flow blood pump output.
RESULTS AND CONCLUSION: When the heart rate was of 75 times per minute, blood pump flow rate could reach 5.01 L/min; blood pump flow gradually increased with the heart rate when the heart rate was in the range from 50 to 120 times per minute; blood pump kept constant flow state when the heart rate less than 50 times per minute or more than 120 times per minute. Through PID control, the actual flow rate tracks the reference one within 0.1 s. The blood pump flow model based on heart rate can reflect the needs of human blood flow. The control algorithm can achieve stable flow blood pump output, to keep pace human needs of patients.

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