Magnetic driving device and electromagnetic drive pump

A magnetic drive and electromagnetic drive technology, applied in the field of electromagnetism, can solve problems such as brain damage, reduction of blood pump hemolysis, and reduction of the incidence of microthrombosis, and achieve the effect of reducing volume and avoiding damage

Active Publication Date: 2017-04-26
汭锋(珠海)科技有限公司
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

The current third-generation magnetic levitation centrifugal pump adopts magnetic levitation technology, which further reduces the hemolysis of the blood pump. At the same time, the magnetic levitation technology avoids direct contact between the mechanical structure and the blood, thereby reducing the incidence of microemboli, but its disadvantages are: Centrifugal pumps provide continuous perfusion when pumping blood, which has caused damage to human tissues, organs and brain to a certain extent

Method used

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  • Magnetic driving device and electromagnetic drive pump
  • Magnetic driving device and electromagnetic drive pump
  • Magnetic driving device and electromagnetic drive pump

Examples

Experimental program
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Effect test

Embodiment

[0031] Solenoid driven pump 100 includes a solenoid 10 , a pump 20 and a control circuit 30 .

[0032] According to the current equivalent model of the permanent magnet, the permanent magnet can be equivalent to a circular current, such as figure 1 As shown, when the circular current is in a magnetic field where the magnetic induction intensity increases monotonically, due to the existence of radial magnetic field components, such as figure 2 As shown, according to the Ampere loop theorem on the magnetic induction component of the magnetic field, it can be known that the force of the circular current is 0. According to the left-hand theorem on the magnetic induction component, it can be judged that the circular current is always affected by the Ampere force, and the direction of the force is always towards the magnetic induction. The increasing direction is positively correlated with the derivative B'. Among them, Jm is the bulk current density, Jms is the surface current de...

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Abstract

The invention relates to a magnetic driving device and an electromagnetic drive pump. The electromagnetic drive pump comprises a spiral wire conduit, a pump body, magnetic blocks, a first valve group, a second valve group and a control circuit, wherein the spiral wire conduit which is in symmetrical step shape comprises plural groups of coil components which are stacked in a staggered manner; the control circuit controls the time sequence of currents leading to the different coil components, so that the plural groups of coil components generate superimposed magnetic fields, which correspond to the magnetic blocks and have opposite magnetic poles, in the spiral wire conduit; and the magnetic blocks perform linear and reciprocating motion along the spiral wire conduit in the superimposed magnetic fields. According to the electromagnetic drive pump, the alternately changing magnetic fields can be generated in a cavity of the spiral wire conduit, the magnetic blocks in the pump body perform reciprocating motion under the action of the magnetic fields, simulating cardiac impulse principle, and continuously perfused pumped blood of a centrifugal pump can be prevented from damaging human tissue organs and brains.

Description

technical field [0001] The invention belongs to the field of electromagnetism, and in particular relates to a magnetic force driving structure. Background technique [0002] Extracorporeal membrane oxygenation (exteacorporeal membrane oxygenation, ECMO) is a kind of adjuvant therapy which takes extracorporeal circulation system as its basic equipment and utilizes extracorporeal circulation technology for operation and management. ECMO is to introduce the venous blood in the body to the outside of the body for membrane oxygenation, and then inject it into the human body by the ECMO blood pump. Clinically, ECMO technology is mainly aimed at patients with respiratory insufficiency and cardiac insufficiency. Through extracorporeal circulation, the patient's heart and lungs can be fully rested, and the patient's hypoxemia can be effectively improved. As the core component of the ECMO system, the blood pump determines the development of ECMO technology to a certain extent. [00...

Claims

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Application Information

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IPC IPC(8): F04D13/02
CPCF04D13/024F04D13/027
Inventor 葛斌张磊魏凌轩张少伟伍进平
Owner 汭锋(珠海)科技有限公司
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