Method of manufacturing stent attached to artificial blood vessel and stent attached to artificial blood vessel manufactured by the same

摘要

A method of manufacturing an artificial blood vessel attached stent, the method comprising forming a stent 10 having a hollow cylindrical body by cross weaving a super-elastic shape memory alloy wire 2, performing attachment preparation by forming an inner artificial blood vessel layer 31 by inclined winding an artificial blood vessel (PTFE, polytetrafluoroethylene) 5 along the outer side of a rod 20 to form an inner artificial blood vessel layer 31, inserting the inner artificial blood vessel layer 31 into the stent 10. Winding an artificial blood vessel 5 along an outer side of the stent 10 to form an outer artificial blood vessel layer 32, and inserting a silicon tube 40. Fixedly mounting the rod 20 inside a vacuum heating device 50, attaching the inner artificial blood vessel layer 31 and the outer artificial blood vessel layer 32 positioned at the inside and outside of the stent to each other by vacuuming operation towards the stent 10 with the inner artificial blood vessel layer 31 and the outer artificial blood vessel layer 32 internally and externally wrapping around the stent 10, and thermally fusing the inner artificial blood vessel layer and the outer artificial blood vessel layer 32 to each other by a heating operation so that the inner artificial blood vessel layer 31 and the outer artificial blood vessel layer are integrally attached to the stent. The stent may be inserted and placed in a lesion portion that is being stenosed or has been stenosed in a blood vessel or a lumen in the body to expand the lesion portion that is being stenosed or has been stenosed. Further, the stent and the artificial blood vessel layers are integrally formed with each other without floating between the stent and the artificial blood vessel layers. Accordingly, foods or other contents travelling through the pathway of a lumen in the body or blood in the vessel may be prevented from contacting the lesion portion, and the progress of the stenosis of the lesion portion may be prevented that may occur as the lesion portion grows toward the inside of the hollow cylindrical body of the stent.