Moving magnet external driving type fluctuation blood pumping ventricular blood pump

Abstract

The invention discloses a moving magnetic external drive type fluctuation pumping blood ventricle blood pump which comprises a pump body formed by vertically buckling an upper pump body and a lower pump body, the top of the upper pump body is provided with a blood inlet pipe, and the bottom of the lower pump body is provided with a blood outlet pipe. A flow guide disc is fixedly installed in an inner cavity of the pump body, a flexible membrane assembly is arranged between the flow guide disc and the blood outlet pipe in a suspended mode, the blood inlet pipe of the upper pump body is sleeved with a moving magnetic driver, and the flexible membrane assembly is connected with the moving magnetic driver through a linkage column penetrating through the upper pump body. Under the action of an alternating magnetic field generated by the moving magnetic driver, a flexible membrane of the flexible membrane assembly is driven by the linkage column to do up-and-down oscillating motion, and meanwhile the flexible membrane generates wave motion in the radial direction of the flexible membrane, so that blood flowing in from the blood inlet pipe is pumped to the blood outlet pipe to flow out. The invention realizes the effect of fluctuating pumping of blood, and has the characteristics of reducing the occurrence risk of complications such as hemolysis, thrombus and the like, improving the blood compatibility and the like.

Description

technical field [0001] The invention relates to a moving magnet externally driven wave pumping ventricular blood pump, which belongs to the technical field of ventricular blood pumps. Background technique [0002] In recent years, ventricular assist devices have played an increasingly important role in the treatment of end-stage heart failure, mainly left ventricular assist devices. The core component of the left ventricular assist device is the left ventricular blood pump. At present, the more mature left ventricular blood pumps mainly include axial flow type and magnetic levitation centrifugal type. These two left ventricular blood pumps adopt the principle of mechanical rotation, relying on the high-speed rotating rotor to do work on the blood to convert the rotational mechanical energy into pressure potential energy on the blood, thereby producing the effect of pumping blood. It can be found from actual use that long-term use of the left ventricular blood pump will lead...

AI Technical Summary

Problems solved by technology

It can be found from actual use that long-term use of the left ventricular blood pump will lead to various complications, such as causing the blood flow in the patient to lose pulsation, causing organ inflammation, gastrointestinal bleeding, aortic valve regurgitation and other complications. increase patient mortality

In addition, long-term use can also cause blood compatibility problems such as hemolysis and thrombosis

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