The invention relates to the field of
medical instruments, and discloses a plugging device for
aortic dissection crevasse repair, which comprises a
stent, barbs are uniformly and fixedly mounted at two ends of the
stent, bioactive coatings are arranged on the outer walls of the barbs, and auxiliary stents are symmetrically and fixedly connected to the outer wall of the
stent. A developing marking line is arranged on one side of the auxiliary stent, air bags are symmetrically arranged on the outer wall of the auxiliary stent, micropores are evenly formed in the outer walls of the air bags, a self-sealing valve is installed on one side of each air bag, a covering film is arranged on the outer wall of the stent, and a
medicine elution coating is arranged on the surface of the covering film. The air bag is made of
polyurethane or
silicone rubber materials with the thickness of 0.1-0.5 mm, micropores with the
diameter of 1-10 microns and passivated edges are formed, a self-sealing valve is installed on one side of the air bag, a contrast agent or gas is injected to enable the pressure to reach 2-5 barometric pressures, and then expansion is conducted, so that the edges of the stent are tightly extruded on the
blood vessel wall, and the risk of internal leakage is reduced.