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Tripolar blood pump in-vitro magnetic drive system and controlling method thereof

A technology of magnetic drive and control method, applied in the direction of suction equipment, etc., can solve the problems of small torque, low efficiency, poor adaptability, etc.

Active Publication Date: 2012-06-20
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to overcome the shortcomings of small torque, low efficiency and poor adaptability in the prior art, and provide a three-pole blood pump external magnetic drive system and its control method

Method used

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  • Tripolar blood pump in-vitro magnetic drive system and controlling method thereof
  • Tripolar blood pump in-vitro magnetic drive system and controlling method thereof
  • Tripolar blood pump in-vitro magnetic drive system and controlling method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Such as figure 1 As shown, the driving device is composed of a three-pole radially symmetrically distributed iron core, a winding coil and an adjustable support.

[0050] Such as figure 2 As shown, the driving device is installed on the chest of the human body, and the opening angle and spacing are adjusted according to the different genders and body shapes of the human body to adjust to a suitable driving mode.

[0051] By simulation, as image 3 The 4-state driving moment angle characteristic diagram is used to determine the optimal driving phase angle. It can be seen from the figure that the phase angle changes along the maximum envelope. The permanent magnet phase angle rotation is driven by NNS mode at 0-90°, 90-180° Driven by SNN mode, driven by SSN mode for 180-270°, and driven by NSS mode for 270-360°, the maximum driving capacity can be achieved, and the average driving torque is the largest. The specific permanent magnet rotation diagram is as follows Fig...

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Abstract

The invention discloses a tripolar blood pump in-vitro magnetic drive system and a controlling method thereof. The system comprises an annular support, three iron cores and three sets of winding coils, wherein the three iron cores are arranged on the annular support symmetrically along the radial direction; the three sets of winding coils are respectively wound on the three iron cores, and respectively connected with three sets of drive circuits; and when the tripolar blood pump in-vitro magnetic drive system works, the three sets of winding coils generate an alternating magnetic field, and the winding coils are electromagnetically coupled with a permanent-magnetic axial flow blood pump in a body; and the annular support is a telescopic support. According to the tripolar blood pump in-vitro magnetic drive system and the controlling method thereof, the defects of the conventional blood pump in-vitro magnetic drive system, such as small torque, low efficiency and poor adaptability, are overcome.

Description

technical field [0001] The invention relates to an external magnetic drive system of a three-pole blood pump and a control method thereof, which is especially suitable for non-contact external magnetic drive of artificial heart and gastrointestinal robot, and can be adjusted according to different body shapes. Background technique [0002] The external magnetic field drive method drives the impeller of the blood pump through non-contact, long-distance magnetic field drive technology, without any percutaneous wires, avoiding internal and external penetration, greatly reducing the chance of infection, and greatly improving the patient's quality of life. At the same time, the external magnetic field drive system uses electric energy converted into electromagnetic field energy for driving, which can not only reduce the seams and friction parts on the pump body, but also more effectively control the blood damage and reduce the heat generated in the pump body, overcoming the tradit...

Claims

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Application Information

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IPC IPC(8): A61M1/12
Inventor 谭建平谭炜刘云龙谭卓
Owner CENT SOUTH UNIV
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