THE BALLOON EXPANDABLE SHEET STENT AND TECHNOLOGY OF ITS MANUFACTURING

摘要

The Balloon Expandable Sheet Stent is intended for the better support of a diseased vessel wall on the basis of securing the very best thromboresistant properties and raise in the serviceability of a stent in a vessel. The stent (19) comprises a cylindrical surface formed by semi-circular bands (20) oppositely located along the stent longitudinal axis and displaced one against another for a calculated step, and arc-shaped links (12) uniting the said semi-circular bands (20) between themselves on their loose diametrical ends (15) over a generating line of the said stent cylindrical surface. The said stent cylindrical surface is preliminary formed on the surface of a thin sheet metallic blank (13) in a shape of a stencil (10) of calculated geometrical profile constructive elements with the final linear and diametrical sizes of the stent design. In a state of the said stencil (10) one group (11) of the said calculated geometrical profile constructive elements is executed with a possibility of bending and shaping of pockets (16) with clearances for a deployment of bioabsorbable components for local drug delivery, the other group (12) of these constructive elements is executed with a possibility of flanging on both sides from the said stencil longitudinal axis and shaping of a lumen for the deployment of an uninflated balloon (18) of the conducting catheter. The proposed stent design could be manufactured with the application of a simple unwasted technology.