In-vitro non-implantable maglev heart chamber assisting centrifugal blood pump

Abstract

The invention belongs to the field of medical apparatuses, and relates to an artificial heart assisting device for treating heart failure caused by acute cardiogenic shock, in particular to an in-vitro non-implantable maglev heart chamber assisting centrifugal blood pump. The in-vitro non-implantable maglev heart chamber assisting centrifugal blood pump adopts a non-bearing magnetic fluid levitation technology to substitute mechanical bearing driving of the conventional centrifugal blood pump, an impeller rotor is suspended in a magnetic field without any mechanical contact, and the position and the speed of the impeller rotor are precisely regulated by a digital signal processor system, so that damage to blood cells and visible components (platelets, blood coagulation factors and the like) of blood is reduced to the most extent; meanwhile, by a heparin coating technology applicable to the inner wall of the blood pump and the surface of the impeller rotor, coagulation and thrombosis as well as use of an anticoagulant medicine in the assisting process are further reduced, so that complications of hemorrhage of a patient during a surgery are reduced. The in-vitro non-implantable maglev heart chamber assisting centrifugal blood pump has the characteristics of being simple in structure, reliable in operation, convenient to maintain, stepless in speed regulation and the like, can be used for treating the heart failure caused by acute cardiogenic shock triggered by a variety of reasons, and in combination with an oxygenator, can also be used for assisting circulation and blood oxygenation during extracorporeal membrane oxygenation (ECMO) treatment.

Description

Technical field: [0001] The invention belongs to the field of medical equipment, and relates to an in vitro non-implantable magnetic levitation ventricular auxiliary centrifugal blood pump device. Background technique: [0002] The incidence of cardiovascular disease is on the rise year by year. Cardiogenic shock and heart failure are critically ill patients with extremely high mortality rates. Artificial ventricular assist devices are very important both as a treatment measure and as a transitional support for heart transplantation. Clinical Value. [0003] After decades of development, artificial ventricular assist devices have experienced pneumatic pulsating pumps, mechanical bearing centrifugal pumps, and the latest magnetic levitation centrifugal blood pumps. Artificial ventricular assist devices are divided into short-term extracorporeal non-implantable assist devices for the treatment of acute cardiogenic shock, and long-term implantable assist devices for the treatm...

AI Technical Summary

Problems solved by technology

At present, most of the domestic research and development are long-term implantable auxiliary devices, but such long-term implantable auxiliary devices are not suitable for the treatment of reversible heart failure caused by acute cardiogenic shock in terms of cost and practicality.

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