BRANCHED AND HIGHLY ADJUSTABLE MEDICAL DEVICE PROVIDED WITH BRANCH INPUT Russian patent published in 2015 - IPC A61F2/07 

FIELD: medicine.

SUBSTANCE: group of inventions refers to medical equipment, namely to a multi-section stent-graft and a method for producing it. The multi-section stent-graft comprises a lumen formed by the graft consisting of an apertured inner tube and an apertured outer tube, and an auxiliary lumen arranged between the inner tube and the outer tube of the above graft. The graft is supported by means of the main stent. The auxiliary lumen is fluid connected through the above apertures. The stent-graft for implantation into the branched lumen comprises the main branch vessel and a secondary branch vessel. The above stent-graft comprises a graft consisting of the apertured inner tube and the apertured outer tube. The graft extends along a longitudinal axis from the distal end to the proximal end and forms the main lumen. The graft is supported by the main stent. The auxiliary lumen is formed between the inner tube and the outer tube of the graft. A section of the auxiliary lumen is placed between the distal and proximal ends of the graft. The auxiliary lumen is fluid connected through the apertures of the inner tube and the outer tube. The method for producing the stent-graft involves coating the first core comprising a groove and a back wall of the groove with the inner polymer tube; cutting a slot in the polymer tube along the back wall of the groove; integrating the second core into the groove of the first core and coupling the second core with the back wall of the groove and deforming the inner polymer tube; placing the inner polymer tube above the inner polymer tube; and cutting a slot in the outer polymer tube above the smaller second core; the outer polymer tube and the inner polymer tube represent the graft.

EFFECT: group of inventions provides producing the stent-graft possessing a high degree of shape adjustability that makes the stent-graft flexible with optimum strength and provides a compaction in relation to a local vessel.

44 cl, 14 dwg