Occluding stent, implanter thereof, and implanting method thereof

An occluding stent, comprising a distal flange occluding body, a proximal flange occluding body, and a connection portion, wherein surfaces of both a distal most end of the distal flange occluding body and a proximal most end of the proximal flange occluding body are away from the connection portion in a longitudinal direction of the connection portion and are flat, and metal wires of the distal most end and the proximal most end are continually braided,

• wherein the distal flange occluding body is umbrella-shaped, mushroom cap-shaped, disc-shaped, hemi-spherical, or spherical, and the proximal flange occluding body is umbrella-shaped, flare-shaped, mushroom cap-shaped, or spherical
• a sealed occlusion state is formed between the distal flange occluding body and the proximal flange occluding body by using a coating, and the coating simultaneously comprises at least one
• and the coating comprises a first occluding coating provided only between the distal flange occluding body and an inner cavity of the connection portion, a second occluding coating provided only between the proximal flange occluding body and the inner cavity of the connection portion, and a third occluding coating provided only in the inner cavity of the connection portion in a vertical direction of the connection portion to prevent food or foreign objects from passing through the inner cavity of the connection portion.