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With the continuous development of biomedical technologies, \. Blood pump driven energy provider is one of the key issues of the artificial heart research in artificial heart research process, because the drive way has become a micro-blood pump whether the practical application of key technologies. In traditional as well as the current blood pump system, almost all of the clinical application using energy storage in the body or through the wire (pipe) to the blood pump in vivo to provide energy, in this way due to the guide wire or catheter through the skin is drawn from the body, likely to cause vivo infection, not suitable for long-term use. The external magnetic field-driven approach is not only an effective solution to the lack of the energy supply system of the past, blood pump through non-contact magnetic field drive to avoid the seal, leakage, and the human body row of the opposite sex and a series of traditional pump structure is difficult to overcome engineering and medical difficult to greatly reduce the chance of infection, an important innovation. In this paper, the exploration and study of the blood pump outside the magnetic drive way, miniature axial flow blood pump the outer magnetic drive system design thinking based on single-chip control system feasibility is verified by experiments. The main contents are as follows: 1, the calculation of the volume of permanent magnet theoretical analysis, the establishment of a permanent magnet field space mathematical model, using ANSYS software simulation study of the magnetic field of the permanent magnet. 2, rotating magnetic field method for research. According to the special characteristics of the blood pump, external magnetic drive axial flow blood pump works, as well as the external magnetic drive drive unit, motor drive method, the excitation coil driving method, electromagnetic rod method three rotating magnetic field generated program, through theoretical analysis, comparison, determined to produce a rotating magnetic field of design. 3, the blood pump outside the magnetic drive system design. Program to produce a rotating magnetic field excitation coil driving method, two alternating pulse generation method is proposed to design a microcontroller-based control blood pump outside the magnetic drive system. Including design of hardware and software systems, the governor function of the driving device software design, and recommending preventive measures as well as some interference may occur in the system working process.
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