Non-contact Electromagnetic Coupling Cylindrical Liquid Pump System

Abstract

The invention discloses a non-contact electromagnetic coupling cylindrical liquid pump system in the technical field of medical equipment. The non-contact electromagnetic coupling cylindrical liquid pump system comprises a pump body; the pump body comprises a first pumped liquid flowing cavity, a magnetic control cavity and a second pumped liquid flowing cavity which are sequentially connected; at least four groups of coil assemblies are arranged at equal intervals outside the magnetic control cavity along the length direction of a cavity body of the magnetic control cavity; a magnetic rotor is arranged in the magnetic control cavity; the magnetic rotor can move under the control of the coil assemblies; and elastic thin films are respectively arranged in the first pumped liquid flowing cavity and the second pumped liquid flowing cavity. The non-contact electromagnetic coupling cylindrical liquid pump system directly utilizes electromagnetic coupling, abandons a motor and a mechanical transmission structure and avoids mechanical loss and heat production. Meanwhile, the non-contact electromagnetic coupling cylindrical liquid pump system has the advantage of overload resistance of a stepping motor and commonly can resist to 2 to 3 times of overload and possibility that coils are overloaded to generate heat and even be burnt down is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a non-contact electromagnetic coupling cylindrical liquid pump system. Background technique [0002] To this day, respiratory failure remains the most common disease in intensive care medicine. As the most severe form of acute respiratory distress syndrome (ARDS), the case fatality rate can be as high as 20%-41%. Once it progresses to severe ARDS, the case fatality rate rises to 90%. The main cause of death is refractory hypoxemia. [0003] ARDS is a syndrome characterized by diffuse pulmonary interstitium and alveolar edema caused by damage to pulmonary capillary endothelial cells and alveolar epithelial cells due to various reasons. The clinical manifestations are characterized by hypoxemia and respiratory distress. The traditional treatment of hypoxemia mainly relies on mechanical ventilation. Mechanical ventilation can improve oxygenation, maintain lung volume, su...

AI Technical Summary

Problems solved by technology

The H1N1 pandemic in 2009 led to a significant increase in the incidence of severe ARDS. MaxLaen et al. found that the early application of conventional mechanical ventilation therapy had a hospital mortality rate of over 80%, but after ECMO treatment, the mortality rate of severe ARDS patients dropped to 21%. %, this result is shocking

[0014] (2) Blood flow restriction

The commonly used pump speed is generally less than 350ml / min. If it is increased to the target value of 800-2500ml / min, the increase in the number of squeezes will cause more damage to blood cells, and the non-filling period of continuous blood flow will cause cavitation.

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