Left ventricle auxiliary device implantation method based on blood flow distribution optimization

Abstract

The invention relates to a left ventricular assist device implantation method based on blood flow distribution optimization. The method comprises the steps that the heart output quantity of a patient is calculated; physiological parameters of the heart of the patient are obtained by reconstructing aorta and coronary vessels; calculating the blood flow velocity of the normal crowd by using the blood flow volume and resistance of the normal crowd; simulating installation of a left ventricular auxiliary device, importing physiological parameters of the heart of the patient, and calculating the blood flow velocity of the patient; and obtaining an optimal parameter value according to the error function. According to the method, after the optimal parameter values are obtained, implantation and use of the left ventricular assist device can be guided, and it is guaranteed that when the left ventricular assist device is actually implanted, parameters such as the included angle between the artificial blood vessel and the ascending aorta, the diameter of the artificial blood vessel and the motor rotating speed of the left ventricular assist device are optimal parameters; therefore, the blood supply condition of each blood vessel after the left ventricular auxiliary device is implanted is optimized, vortex formation is reduced, thrombus formation is reduced, and the probability of formation of complications such as pulmonary embolism and cerebral infarction is reduced.

Description

technical field [0001] The invention belongs to the field of biomedical engineering, and in particular relates to a method for implanting a left ventricular assist device based on optimization of blood flow distribution. Background technique [0002] Heart failure (heart failure) referred to as heart failure refers to the failure of the venous blood to fully discharge the heart due to the dysfunction of the systolic function and / or diastolic function of the heart, resulting in blood stasis in the venous system and insufficient blood perfusion in the arterial system, resulting in Cardiac circulatory disorder syndrome, which is characterized by pulmonary congestion and vena cava congestion. Heart failure is not an independent disease, but the end stage of the development of heart disease. [0003] At present, the main means of clinical treatment of heart failure is heart transplantation or installation of left ventricular assist device. A left ventricular assist device is a ...

AI Technical Summary

Problems solved by technology

If the above parameters are not selected properly, it may cause some side effects. For example, if the artificial blood vessel and the aortic suture angle are not suitable, it may cause the blood flow ejected from the heart’s own aortic valve to “hedge” with the blood flow of the artificial blood vessel. The flow may form a vortex, causing platelets and other substances to deposit at the root of the aorta to form a thrombus, and the thrombus travels with the blood flow to the whole body, which may lead to complications such as pulmonary embolism and cerebral infarction

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