A new assistive device for the treatment of fontan circulatory failure

Abstract

The present invention relates to the technical field of auxiliary treatment apparatus after Fontan operation, in particular to a new type of auxiliary device for treating Fontan circulatory failure, including a balloon placed at the confluence of pulmonary artery, superior vena cava and inferior vena cava after Fontan operation and the two ends of the balloon are respectively located in the superior vena cava and the inferior vena cava; as the balloon is inflated and deflated, the blood in the superior vena cava and inferior vena cava is extruded into the pulmonary artery. Through the above method, the balloon is placed at the intersection of the pulmonary artery, the superior vena cava and the inferior vena cava, and the balloon is inflated and contracted by inflation and deflation of the balloon, and then the superior vena cava and the inferior vena cava The blood in the lung is squeezed into the pulmonary artery. The valve coupled with the balloon opens and closes synchronously, preventing the blood from flowing backward into the superior and inferior vena cava. As a result, the pulsating blood enters the pulmonary artery and plays the role of part of the right ventricle, thereby treating patients with Fontan circulation failure and providing powerful conditions for later heart transplantation.

Description

technical field [0001] The invention relates to the technical field of postoperative auxiliary therapy devices for Fontan, in particular to a novel auxiliary device for treating Fontan circulatory failure. Background technique [0002] Since Dr. Francis Fontan performed the first Fontan operation in 1971, the Fontan operation has become the "gold standard" for patients with complex congenital single ventricle. The operation method has been improved, and the most commonly used Fontan operation method is the external canal TCPC (caval vein-pulmonary artery connection) operation. The basic idea is to directly connect the superior and inferior vena cava to the right pulmonary artery, leave the right ventricle, and use the only ventricle to undertake systemic circulation. This operation separates the systemic circulation from the pulmonary circulation, significantly improving hypoxia and quality of life in patients with single ventricle, and has become a milestone in single vent...

AI Technical Summary

Problems solved by technology

[0004] At present, there are many difficulties in Fontan circulation assistance: VA-ECMO is not effective; the indications for using LVAD are limited; cancellation of Fontan circulation + RVAD requires extracorporeal circulation complex surgery, traumatic, not suitable for emergency assistance; directly used for Fontan circulation assistance The pump design is very complex and still in the laboratory stage

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