METHOD FOR SPIRAL EMBOLISATION OF OPEN ARTERIAL DUCT Russian patent published in 2016 - IPC A61B17/00 

FIELD: medicine.

SUBSTANCE: common femoral vein is catheterised under Seldinger's general anaesthesia. That is followed by an X-ray controlled catheterisation of the pulmonary artery through the inferior vena cava, right auricle, right ventricle. An open arterial duct is catheterised in the frontal projection through the pulmonary artery. An aortography and angiography of the open arterial duct are performed in the lateral projection. The formed angiogram images are used to specify the anatomy and size of the open arterial duct; a controlled spiral of an adequate size is selected. A guide wire is inserted through a catheter into the descending aorta. The catheter is removed through the guide wire. The guide wire is left in the descending aorta. A catheter is inserted in the retrodgrade direction through the open arterial duct into the descending aorta. The inserted catheter is used to deliver the controlled spiral into the open arterial duct ampulla and descending aorta in the up-flow retrodgrade direction through the duct from the side of the pulmonary artery. The controlled spiral turns are released from the catheter. After the desired number of the controlled spiral turnes has been released, the whole system is pulled up through the open arterial duct towards the pulmonary artery; the spiral fixation is checked for durability in the duct ampulla and aorta under X-ray control. The rest turns of the controlled spiral in the pulmonary artery are also released, and the whole system is pulled up once again towards the pulmonary artery. The controlled spiral turns are arranged so that final spiral positioning makes 2-3 turns found in the open arterial duct ampulla and aorta. Echocardiography aims at controlling the spiral position in the open arterial duct, and a release blood amount through the open arterial duct. The spiral is detached from the delivery system; the latter together with the catheter and introducer are removed from the femoral artery; homeostasis is conducted within the access site.

EFFECT: method enables the effective embolisation of the open arterial duct and reduction of postoperative complications.

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