Electromagnetic characteristics of outside magnetic driving axial flow blood pump and peripheral red blood cells(PDF)
《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]
- Issue:
- 2018年第4期
- Page:
- 455-460
- Research Field:
- 医学生物物理
- Publishing date:
Info
- Title:
- Electromagnetic characteristics of outside magnetic driving axial flow blood pump and peripheral red blood cells
- Author(s):
- PENG Ge; YUN Zhong; SUN Shuming; HU Jiyu; DONG Zhe
- School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China
- Keywords:
- ; axial flow blood pump; electromagnetic field; red blood cells; optimized design; damage
- PACS:
- R318.1
- DOI:
- DOI:10.3969/j.issn.1005-202X.2018.04.016
- Abstract:
- The strong magnetic induction intensity of outside magnetic driving axial flow blood pump has an effect on the blood and surrounding tissues and cells. Therefore, performing a theoretical calculation and simulation analysis for the electromagnetic field of the blood pump and peripheral red blood cells is necessary. Herein we use three-dimensional (3D) transient magnetic field module in ANSYS Electronics Desktop to simulate the transient magnetic field, and establish the model of magnetic field distribution in the cell membrane with theoretical method. Subsequently, 3D transient electric field in combination with magnetic field module is applied to analyze the red cell membrane and its internal and external electromagnetic fields. The 3D and two-dimensional magnetic induction intensity distributions with blood pump in the steady state are given and the maximum magnetic induction intensity acting on the cell membrane is obtained. According to the maximum magnetic induction intensity and the characteristics of blood pump, we obtained the distribution law and amplitude of the electric fields of red cell membrane in time domain. The electric field coupling distribution of the cell membrane is obtained by comprehensively considering the resting potential of the cell membrane. Based on the above-mentioned conditions, the induction magnetic field distribution of the cell membrane and the maximum magnetic field force on the cell membrane are able to be calculated. Despite the great residual magnetic induction of NdFeB materials, the maximum magnetic induction intensity acting on blood and red blood cells is only 812 mT. The electromagnetic properties of red blood cells provide the theoretical basis for the analysis of electromagnetic damages to red blood cells under the influence of the driven magnetic field, as well as the clinical application and the optimal design of the blood pump structure.
Last Update: 2018-04-23