Liquid diverter with reversible flow direction

Abstract

The invention discloses a liquid redirector capable of reversing the flow direction. The liquid redirector is provided with a pipe body, wherein the front end of the pipe body is connected with a coronal body; the inner side surface and outer side surface of the coronal body are both a smooth curved surface; an exit at the front end of the pipe body is opposite to the inner side surface of the coronal body; and a channel for liquid to flow through exists between the front end of the pipe body and the two ends of the front end part thereof and the inner side surface of the coronal body. When the liquid redirector disclosed by the invention conveys liquid, after the liquid input into the pipe body flows out of the front end, the flow direction of the liquid is reversed through the obstruction and guide of the coronal body. In the functional treatment of heart-lung replacement realized by using an extracorporeal membrane lung device, after the liquid redirector is inserted into artery as an arterial duct, the flow direction of the blood ejected into the artery is consistent with the flow direction of the blood ejected from the ventriculus sinister, thus the limit of 'balance point' is broken without increasing or reducing the forward resistance against heart.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a liquid diverter capable of reversing the direction of liquid flow. Background technique [0002] For patients with heart and lung failure, current medical technology can use extracorporeal membrane membrane (ECMO) devices to achieve the function of cardiopulmonary replacement. In the implementation process, it is usually necessary to insert a thicker catheter into the aorta and central vein to drain blood. The venous catheter draws out the blood in the vein, and then the blood passes through the power pump and the oxygenated membrane, and then enters the aorta from the extracorporeal membrane and the lung through the arterial catheter. The problem with the above-mentioned process is that in the aorta, the blood flow pumped by the heart and the blood flow infused by the extracorporeal membrane and lung will flow in opposite directions, causing the patient to be in a c...

AI Technical Summary

Problems solved by technology

The problem with the above-mentioned process is that in the aorta, the blood flow pumped by the heart and the blood flow infused by the extracorporeal membrane and lung will flow in opposite directions, causing the patient to be in a certain part of the aorta (the left heart valve and the arterial duct opening). Between) form the so-called "balance point", the blood supply of the organs close to the heart is supplied by the heart, and the organs far from the heart are supplied with blood by ECMO

The blood flow ejected by ECMO in the aorta is directed towards the aortic valve, which increases the forward resistance of the left ventricle. The myocardium must increase its systolic function to eject the blood flow in the heart, which is not conducive to the recovery of heart function; if the heart function is extremely weak, or The kinetic energy of ECMO ejecting blood is too large, which may easily prevent the blood flow in the heart from ejecting, and even form a thrombus in the ventricle, resulting in the failure of treatment.

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