Extracorporeal life support flood circulation device and flow path design method thereof

Abstract

The invention discloses an extracorporeal life support flood circulation device and a flow path design method thereof. The extracorporeal life support flood circulation device comprises a centrifugalpump, an oxygenator, a sensor, a flow path loop and a driving system, wherein the centrifugal pump, the oxygenator and the driving system are integrated in one device, and a method of combining haemodynamics with analog simulation is used for designing and manufacturing the flow path loop. The extracorporeal life support flood circulation device has the advantages of being integrated, all-in-one and portable, efficient gas exchange after integration is realized, and a blood damage degree is lowered. The equipment is convenient to use, can carry out short-time power-failure transportation alongwith a bed, is extremely suitable for first-aid and assistance situations, and has a high popularization degree and low operation difficulty.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an extracorporeal life support blood circulation device and a flow channel design method thereof. Background technique [0002] Respiratory diseases are the systemic disease group with the highest incidence rate in the world, and the main factor in the pathogenesis of critical respiratory diseases is acute lung injury (acute lung injury, ALI), which is caused by various direct and indirect injury factors. Cell and capillary endothelial cell damage, resulting in diffuse pulmonary interstitial and alveolar edema, resulting in acute hypoxic respiratory insufficiency. The pathophysiological features are reduced lung volume, decreased lung compliance, and imbalance of ventilation / perfusion flow ratio, clinically manifested as progressive hypoxemia and respiratory distress, and lung imaging manifested as heterogeneous exudative lesions In severe cases, it is called acute respi...

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Problems solved by technology

[0006] The blood drainage of the hemodialysis or filtration system is small, and the rolling pump system is easy to cause blood damage, and the extracorporeal blood oxygenation cannot be completed without an oxygenator, so it cannot be used to relieve the symptoms of pulmonary dyspnea

If the oxygenator is forcibly connected, the rolling pump is more likely to cause blood damage under the same blood flow, and the effect of use is far worse than that of the low-damage centrifugal pump used in the present invention; The growth of thrombus in the device increases the life risk of the patient

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