An Antihemolytic and Antithrombotic Centrifugal Biventricular Heart Pump

Abstract

The invention relates to a small heart pump suitable to be implanted into a heart of a human body, in particular to an anti-hemolytic and antithrombotic centrifugal double-ventricle cardio pump, which comprises a left pump and a right pump which are symmetrically arranged, wherein the left and right pumps are centrifugal single pumps; each centrifugal single pump comprises a plurality of flow passage components; each flow passage component comprises an inlet tube at the lower end and an outlet tube on the upper part; an impeller and a volute are arranged inside the joint of the inlet tube and the outlet tube. The anti-hemolytic and antithrombotic centrifugal double-ventricle cardio pump meets related hemodynamics requirements, and can realize anti-hemolytic and antithrombotic functions; the left and right pumps are symmetrically distributed, the axial force of the whole pump can be well balanced, the axial colliding feature of the pump is improved, and the functions of simultaneously assisting a left ventricle and a right ventricle are realized; moreover, the speed of an internal flow field of the pump is steady and small in variation gradient, overhigh flow velocity difficultly occurs, and the anti-hemolytic property of the pump is favorably improved; fluid in the pump is in a flowing state, and viscous flow or a dead water region is difficultly formed to avoid thrombus.

Description

technical field [0001] The invention relates to a small heart pump suitable for implanting into human heart, in particular to an anti-hemolysis and anti-thrombosis anti-hemolysis and anti-thrombosis anti-thrombosis double-chamber heart pump. Background technique [0002] The normal blood circulation of the human body relies on the contraction of the heart to give the blood sufficient pressure to meet the physiological needs of the human body. However, due to the degeneration of heart function in most patients with heart failure, one or both of the left and right ventricles may fail, making it impossible to deliver sufficient oxygen to vital organs of the body along with the blood. [0003] According to statistics, 4 million people in the United States suffer from heart failure or failure, and 150,000 people die of end-stage heart disease every year, and the number is increasing at a rate of 25,000 to 30,000. When the end-stage features of heart disease are evident and medic...

AI Technical Summary

Problems solved by technology

[0005] In the patent documents with application numbers 20071003997.7 and 201080021336.6, the heart pumps are all single pumps, which are not symmetrically arranged, and can only realize the pumping function of a single ventricle

Studies have found that as one ventricle fails, the other ventricle will also fail relatively quickly. If two separate artificial assist devices are used for artificial heart assistance, this will increase the time of heart surgery and increase the risk of surgery for patients. And the size limitations of current assistive devices make it difficult to apply the technology to smaller patients

Images