|Spiral-Z-stent still mounted on the application device, introduced along a guide wire, which was advanced to peripheral biliary ducts just before. At the tip of the arrowhead the upper radio- positive mark is visible. The lower one has just (about 1,5 cm) left the endoscope.||
deployment the stent has fully
expanded at site of the tumorous
stenosis (pancreatic carcinoma).
The meshes of a Z-stent are wider
than the ones of a Wall stent.
Application of a second metall stent
through those meshes (i.e. at the
hepatic fork) is easier. This is
important, because drainage of both
hepatic ducts, when obstructed, is
recommended as state of the art.
The name Z-stent is derived from
the Z- like arrangement of the meshes.
During deployment the stent does not shorten,
as opposed to the Wall stent.
Move the mouse´s arrow onto the image to colour the stent.