Dual-direction artery conduit used for assisting circulation, control system and control method thereof

Abstract

Provided is a dual-direction artery conduit used for assisting circultion, a control system and a control method thereof. The conduit comprises a cylinder conduit body, a blood channel is formed along the central axis line of the conduit body, both ends of the blood channel near the conduit body is straight line shape, the upper end is front outlet of blood, while the lower end is the inlet of blood, the middle part of the blood channel is S shape, a sided reverse outlet is arranged near the upper side of a crook of the S-shaped channel along the blood flow direction, one end of the sided reverse outlet is connected with the blood channel, the other end is opposite to the front outlet and passes the outer wall of the conduit body. Through formation of the sided reverse outlet near the crook of the S-shaped channel, when blood flows along the S-shaped channel, a part of blood flows from the front outlet and the other part flows from the sided reverse outlet, which enables the oxygenated blood to flow respectively along two directions to not only guarantee blood flow of lower arms but also blood oxygen supply of coronary artery and branched arteries of aortic arch, and enables uniform oxygen blood supply of the coronary artery the upper arms, brain tissue and lower to avoid 'the north and south syndrome'.

Description

technical field [0001] The invention relates to the field of artificial oxygen delivery, in particular to a bidirectional arterial catheter for auxiliary circulation, a control system and a control method thereof. Background technique [0002] Extracorporeal membrane oxygenation (ECMO), referred to as membrane lung, is an extracorporeal circulation technology derived from cardiac surgery. It is essentially an improved artificial heart-lung machine and a new technology to save the lives of dying patients. The core equipment of ECMO is membrane oxygenator and blood pump, which play the role of artificial lung and heart respectively. ECMO is mainly used for severe respiratory diseases, circulatory diseases and cardiopulmonary resuscitation. It should be pointed out that ECMO itself does not treat the primary disease, but only provides precious time for other treatments to take effect, so the curative effect is closely related to the type of disease. [0003] The progress of E...

AI Technical Summary

Problems solved by technology

However, since the current ECMO femoral artery cannulation is a straight catheter, which is relatively short, the blood flow after extracorporeal circulation is difficult to reach the ascending aorta, which can only guarantee the blood flow of the lower extremities, and it is difficult to ensure the blood oxygen supply of the coronary artery and the branch arteries of the aortic arch. , resulting in insufficient perfusion of coronary arteries, upper extremities and brain tissue, and relatively excessive oxygen blood in the lower extremities, resulting in "north-south syndrome"; , even if the blood flow after cardiopulmonary bypass can reach the ascending aorta, because the straight blood flow direction of the catheter outlet after the catheterization through the femoral artery conflicts with the forward blood flow of the aorta, it will affect the opening and closing of the aortic valve and the left ventricle. function, further reducing the blood supply efficiency of the aortic antegrade blood flow

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