The self expandable biliary tract stent
and anastomic stenosis stent
made of shape memory titanium-nickel
alloy is biocompatible and
tolerant to erosion and it has
stable characters of shape memory
and super elasticity.
Then the stent will engender a
gentle radial tencile force and act on the
inner wall of biliary tract to
expand the stenosis gradualy and rebuilt
the unobstructed passage.
The stent has a well super
elasticity in the condition
of body temparature so it can comply
with the bend of the biliary tract.
So the stent can keep the biliary
tract to be unobstructed while the patient
has little uncomfortableness.
Both ends of the stent are pliable
and smooth without any sharp
corners or spikes and can reduce the
injuries to the biliary wall.
