Percutaneous left heart drainage tube

Abstract

The invention discloses a percutaneous left heart drainage tube, which comprises a ventricular segment positioned in a left ventricle and an artery segment (1) positioned in an external artery of theleft ventricle, wherein the included angle between the ventricular segment and the artery segment (1) is 160-175 degrees; the ventricular segment consists of an inhalation segment (3) and a non-inhalation segment (2); the inhalation segment (3) is positioned at the tail end; a plurality of inhalation side holes (4) are formed in the wall of the inhalation segment (3); a plastic spring ring (7) sleeves outside the non-inhalation segment (2) and the artery segment (1); the percutaneous left heart drainage tube can be inserted through the axillary artery or the carotid artery, the operation flowis simplified, and the ventricular assist device can be coordinated to achieve left heart drainage. The drainage catheter is directly arranged in the left ventricle under the guidance of cardiac ultrasound or DSA through the peripheral vessel, and high-risk invasive operations such as atrial septum puncture or ventricular opening and the like are not needed; in addition, the percutaneous left heart drainage tube can effectively drain left ventricle blood, and the ventricular load is reduced through the catheter in ventricular assistance.

Description

technical field [0001] The invention relates to a left heart drainage tube, in particular to a percutaneous left heart drainage tube, which belongs to the technical field of medical devices. Background technique [0002] Heart failure is a worldwide public health problem with high morbidity, poor prognosis and heavy economic burden. The incidence rate of people aged 30-65 years is 1.5-2% worldwide, and the incidence rate of people over 65 years old is 6-10%, and the incidence rate continues to rise. Treatment of heart failure includes drug therapy, cardiac resynchronization therapy, heart transplantation, and mechanically assisted circulation. Although the drug treatment of heart failure has been continuously optimized, studies have shown that the overall 5-year survival rate does not exceed 50%, and the survival rate of end-stage heart failure is even lower. [0003] Ventricular assist device can reduce the work of the heart and provide circulatory support. Since it was u...

AI Technical Summary

Problems solved by technology

Disadvantages: This intubation method causes an increase in left ventricular afterload, resulting in blood stasis in the left ventricle, which may lead to an increase in left ventricular end-diastolic pressure (LVEDP), pulmonary capillary wedge pressure (PCWP) and The reduction in stroke volume further exacerbates left ventricular hyperemia, and there is a risk of hemorrhage at the puncture cannula site and risk of distal limb ischemia

[0006] Intra-aortic balloon pump (IABP) consists of a 7.0-8.0Fr double-lumen catheter and a cylindrical polyethylene balloon. The balloon passes through the femoral or axillary artery through the delivery sheath. Placed in the aorta, disadvantages: cannot significantly increase cardiac output, has potential risks such as limb ischemia, vascular trauma, thrombosis, hemolysis, and thrombocytopenia

Disadvantages: Small axial flow pumps require high speed (33000-51000 rpm) to maintain flow, which increases the risk of blood destruction. In addition, this intubation method has complications such as groin hematoma and catheter breakage

Disadvantages: The entire implantation procedure must be performed in the catheterization laboratory; the size of the cannula is large, and ischemia of the distal femoral artery is a serious complication; atrial septal puncture increases iatrogenic injury

The distance from the puncture point of the femoral artery to the aorta and the left ventricle is relatively long, and the catheter spans the entire aorta. A longer catheter will increase the risk of thrombosis. In addition, there are many branches from the femoral artery to the left ventricle, making it difficult to place the catheter, and there is damage to the front end of the catheter Risk of other collateral vessels

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