Novel reverse arterial intubation tube

Abstract

A novel reverse arterial intubation tube relates to the technical field of medical instruments and comprises a catheter with a hollow inner cavity. The novel reverse arterial intubation tube is characterized in that the catheter is an 'S'-shaped spiral structure, a guide wire inlet is arranged at a head end of the catheter, an outlet of the catheter is spiral, the flowing direction of the outlet of the catheter is opposite to the flowing direction of an inlet, a spiral sheet is arranged in the inner cavity nearby the outlet of the catheter, the inner cavity of the catheter is divided into a left branched blood flow pipe and a right branched blood flow pipe by the spiral sheet, the branched blood flow pipe on the right side is gradually reduced and closed, a side opening is arranged on the surface on the right side of the catheter, and a lubricating coating is coated on the surface of the catheter. The novel reverse arterial intubation tube not only can increase blood oxygen supply for upper limbs and the head of a patient, increases blood supply efficiency of forward blood flow of the artery of the patient and reduces influences of reverse blood flow to functions of the coronary artery, the aortic valve and the left ventricle of the patient as much as possible, but also can avoid the problem that blood supply for tissues of lower limbs of the patient is excessive relatively, and avoids or reduces 'south-north syndrome'.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a novel reverse VA-ECMO arterial cannula. 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 ECMO is mainly reflected in two aspects: (1) The scope of applicatio...

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 arteries and the branch arteries of the aortic arch. , resulting in insufficient perfusion of the coronary arteries, upper limbs and brain tissue, and relatively excessive oxygen blood in the lower limbs, resulting in "north-south syndrome"; , even if the blood flow after extracorporeal circulation can reach the ascending aorta, because the straight blood flow direction of the catheter outlet after the catheterization through the femoral artery is opposed to the forward blood flow of the aorta, affecting 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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