Artificial heart blood pump with axial flow and centrifugal structure

Abstract

In order to solve the problem that a blood pump with a magnetic suspension structure in the prior art is heavy, the invention provides a blood pump with a magnetic suspension structure for an artificial heart. The blood pump comprises a pump body and a rotor assembly positioned in the pump body, wherein the pump body comprises a motor shell and a sealing cavity, a blood outlet is formed in the sealing cavity, the motor shell is positioned above the sealing cavity, and a blood inlet is connected to the upper portion of the motor shell; and the motor shell is of a hollow structure, a stator assembly is arranged in the hollow of the motor shell, the rotor assembly comprises a rotating shaft and an impeller connected to the lower portion of the rotating shaft, the impeller is positioned in thesealing cavity, rotor magnetic steel is further arranged on the rotating shaft, a blood inlet channel is formed in the rotating shaft, and axial flow blades are arranged on the blood inlet channel. According to the blood pump, the axial flow blades are arranged in the blood inlet channel, the flow of the blood pump can be increased at the same rotating speed, the pressure of blood on the impelleris balanced, the risk that blood cells are damaged by the bottom face of the impeller is reduced, the lift of an outlet of the blood pump is guaranteed, and the stability of blood flowing is improved.

Description

technical field [0001] The invention relates to a device for assisting blood flow, in particular to an artificial heart blood pump with axial flow and centrifugal structure. Background technique [0002] In recent years, with the aging population in my country and the changes in people's living habits, the incidence of cardiovascular diseases has increased sharply. Heart failure is a clinical syndrome in the late development of various cardiovascular diseases, and it is the number one killer of cardiovascular diseases. Heart transplantation is the gold standard for heart failure treatment, but faces a shortage of donors. There are only about 300 heart transplants in my country every year, resulting in a 35% mortality rate for NYHA class IV heart failure patients waiting for a donor within 6 months, and a maximum mortality rate of 50%-70% if combined with cardiogenic shock. In addition, according to statistics, the number of heart failure patients in my country is increasin...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem of heavy blood pump with magnetic levitation structure in the prior art, the present invention provides an artificial heart blood pump with axial flow and centrifugal structure. Under the rotating speed, the blood pump of the present invention has a larger flow rate and a lighter pump body

Images