METHOD FOR CYLINDER POSITIONING OF CORONARY GUIDE IN CORONARY ARTERY BIFURCATION INVOLVEMENTS Russian patent published in 2013 - IPC A61B17/00 

FIELD: medicine.

SUBSTANCE: invention refers to medicine, specifically intervention cardiology. The right femoral artery or right radial artery are punctured according to Seldinger technique. A left coronary artery mouth is catheterised using the catheter 6F or 7F or greater. The coronary angiography is performed. The bifurcation involvements are detected and a diameter of the lateral branch and a degree of myocardial perfusion involvement is assessed. Then, the diagnostic catheter is replaced by the guide catheter 6F or 7F to deliver the first coronary guide into the primary branch, then the second coronary guide into the lateral branch. Thereafter, a stent is implanted along the first guide within stenosis, thereby clamping the second guide between the vascular wall and stent. What is used is a delivery cylinder from the existing stent for positioning of the second guide in the lateral branch. For this purpose, the delivery cylinder is brought along the first guide in the distal direction from the lateral branch mouth, and the cylinder is mounted so that its upper radiopaque marker is found at the level of the lateral branch mouth, and the cylinder is inflated for 30 seconds. At the same time, the second guide is brought to an upper portion of the cylinder so that its J-end bumps up against the cylinder and extends into the lateral branch. That is followed by kissing dilatation of the primary branch with using two cylinder catheters.

EFFECT: method enables correcting the re-stenosis in the existing stent with the involved hemodynamically significant lateral branch, preventing dissections of the primary and lateral branch in the distal direction from the stent, and reducing length of operation.

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