METHOD FOR ENDOVASCULAR PREVENTION AND CORRECTION OF TYPE I ENDOLEAKS IN AORTIC ENDOPROSTHESIS Russian patent published in 2021 - IPC A61B17/00 

FIELD: medicine.

SUBSTANCE: invention relates to medicine, namely to endovascular and cardiovascular surgery. Multispiral contrast-enhanced computed tomography of the aorta is performed, violation of continuity of the aortic wall is detected: aneurysm, dissection, rupture; the aortic morphology, anatomical features, dimensions of the target treatment areas are estimated. The common femoral arteries are isolated, arteriotomy is performed. Angiography is performed on a 0.035-inch guidewire with a pig-tail type catheter to assess the area of target treatment and lateral branching. Using the Sildenger technique, the left brachial artery is then punctured, wherein a 9 F introducer is installed and an intra-aortic ultrasound (UAUS) sensor is inserted through the brachial access into the area of interest under radioscopy. The area of interest is examined, the true diameter and the condition of the aortic wall are assessed, areas with the presence of thrombi or significant calcification, the level of lateral branching are determined. A system for delivery of a stent-graft to the place of fixation of the proximal segment of the endoprosthesis is then introduced under roentgenoscopy on a rigid 0.035-inch guidewire, implantation is performed under control of the UAUS and roentgenoscopy, tightness of fit between the stent-graft and the aortic wall is estimated and the optimal areas for fixation of the endoprosthesis with anchors are determined. A Heli-FX™ system guide catheter is delivered through the arteriotomy access on a 0.035 inch guidewire, installed in the proximal covered part of the endoprosthesis under control of the UAUS so that there were no areas with malposition of the endoprosthesis and presence of thrombi or calcification in the area of implantation of EndoAnchor™ anchors, according to the UAUS data. A Heli-FX™ applicator is then inserted through the lumen of the guide catheter into the area of interest and the endoprosthesis is fixed with EndoAnchor™ anchors into the aortic wall under control of roentgenoscopy and intra-aortic ultrasound. The direction and depth of implantation of the EndoAnchor™ anchors are estimated.

EFFECT: method allows to increase the efficiency of treatment by selecting the optimal area to fixate the endoprosthesis and completely apply the endoprosthesis onto the aortic wall.

1 cl, 1 ex