Blood circulation auxiliary device and control system

Abstract

The invention discloses a blood circulation assisting device and a control system, and the blood circulation assisting device comprises a sheath tube which is used for being installed in a blood vessel and is provided with a near end and a far end; the first balloon is arranged on the sheathing canal and is positioned in the blood vessel; the pump body is arranged at the far end of the sheathing canal and provided with a blood flow channel, a blood inlet and a blood outlet, the blood inlet and the blood outlet are communicated with the blood flow channel, and the pump body is used for pumping blood in the cardiac chamber into the blood vessel; the controller is arranged at the near end of the sheathing canal, and is configured to control the operation of the pump body and intermittently drive the first balloon to inflate and deflate, so that the first balloon at least partially blocks the blood vessel to cooperate with the pump body to generate pulsatile blood flow. According to the blood circulation auxiliary device and the control system, pulsatile blood flow matched with the heart pulsatile characteristics of the patient can be generated, and heart recovery of the patient is promoted.

Description

technical field [0001] The embodiments of the present application belong to the technical field of cardiac assisted circulation, and in particular relate to a blood circulation assisting device and a control system. Background technique [0002] Cardiovascular disease is a collective term for heart and vascular disorders, including coronary heart disease, cerebrovascular disease, rheumatic heart disease, and congenital heart disease. Coronary heart disease and stroke are usually acute diseases. The main cause is that blood vessels cannot flow to the heart muscle or the brain due to blockage of blood vessels, resulting in hypoxia and necrosis of organs and tissues. Clogged blood vessels can be caused by a variety of reasons, the most common of which is narrowing of blood vessels caused by the accumulation of fat in the lining of blood vessels. [0003] The most commonly used treatment for various cardiovascular diseases is the left ventricular assist device. The blood pump c...

AI Technical Summary

Problems solved by technology

The motor needs to provide a high speed of up to 50,000 rpm to drive the blood pump to pump blood. In order to simulate the pulsating blood flow that is synchronized with the heart beat frequency, it is necessary to rely on the frequent rotation and braking of the power motor to make the blood pump rotate repeatedly. and stop, so that the blood pump produces pulsatile blood delivery, which is technically difficult to achieve

In addition, when the left ventricular assist device is in operation, due to the blood pumping channel formed between the left ventricle and the aorta, the repeated rotation and stop of the blood pump will bring the risk of blood flow back from the aorta to the left ventricle, which is not conducive to Patient's recovery of heart function

[0005] Some studies have found that because the existing left ventricular assist device provides patients with continuous blood circulation support, rather than pulsatile or pulsatile blood circulation synchronized with the beating frequency of the heart, it will increase gastrointestinal arteriovenous malformations and cause Risk of potential complications such as acquired von Willebrand factor deficiency

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