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1¡¢Esophageal
and Anastomic Stents
Features£º
 1£©Esophageal
and anastomotic stents in NiTi SMA have excellent biocompatibility,
corrosion resistance, unique shape memory specialty and superelasticity.
The stent can be easily deformed at lower temperature(0¡æ¡«10¡æ)
to insert in the esophageal stent delivery device. Being led
to the predetermined position and put out at standard body
temperature, the stent recovers its original shape and exerts
a retentive and gentle force on the internal wall of the esophagus,
which makes the narrow position recover patency.
2£©The stent has superelasticity at body temperature. It can
wriggle along with the duct to accommodate normal esophageal
peristalsis and keep the duct unobstructed.
3£©The stent do not damage the internal wall of esophagus with
two arcs in both ends, its two flared ends keep close to the
internal wall of esophagus to prevent stent from moving. The
operation is easy and the curative effect is good.
4£©The Coated Esophageal Stent is covered with medical silicon
membrane to prevent esophageal wall from granulation in-growth
and prevent food and gastric juice from retrogression.
Indication:
Indicated for patients who are not suitable for operation,
such as patients who are suffering from esophagus and cardia
cancer, from esophagus stricture caused by chemical cauterization
or other reasons, from anastomotic stricture that can not
be recovered after several expanding operations, and patients
who are suffering from tumours recurrence.
Precautions:
1£©It must be operated by skilled doctors.
2£©Case details should be inspected and prescribed before selection
of suitable specification
3£©Patients should chew and swallow foods carefully after stent
deployment, refraining from cold drinks, viscid foods and
hard foods which may cause stent migration.
4£©If stricture recurrence happens, hard expanding devices
should not be used in expandable cure.
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2¡¢Tracheal Stents
Features:
 1)
NiTi SMA tracheal stents are characterized by their excellent
biocompatibility, corrosion resistance, unique shape memory
effect and superelasticity. The stent is in soft status at
lower temperature (0¡æ¡«10¡æ) and can be deformed so as to be
inserted into the delivery device. After deployment at site,
the stent recovers its original shape and exerts a retentive
and gentle force on the internal wall of the trachea, which
makes the narrow position recover patency. Its radial supporting
force is over 8N.
2) The stent has superelasticity at body temperature. It can
wriggle along with the duct to accommodate normal trachea
peristalsis and keep the duct patent.
3) The stent does not damage the internal wall of trachea
with two arcs in both ends. The operation is easy, simple
and the curative effect is good.
Indications:
Indicated for the patients who are not suitable for operation,
such as patients whose trachea is narrow at developed stage
of lung cancer, aged patients and others who are too weak
to accept operations.
Precaution:
It must be operated by skilled doctors.
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3¡¢Urethra-Prostate Stents
Features:
 NiTi
SMA urethra-prostate stents are characterized by their biocompatibility,
corrosion resistance, unique shape memory effect and superelasticity.
The stent is in soft status at lower temperature (0¡æ¡«10¡æ)
and can be deformed so as to be inserted into the delivery
device. Being led to the predetermined position and located
at body temperature, the stent recovers its original shape
and exerts a retentive and gentle force on the internal wall
of the urethra-prostate, which makes the narrow position recover
patency. The internal stent clings to the wall of urethra-prostate
closely, makes mucous membrane embedded, promotes epithelium
covering and prevents calculus from growing.
Indications:
Indicated for patients who are suffering from prostatic hyperplasia
and some patients who are suffering from lower urethral stricture.
Precautions:
1) It must be operated by skilled doctors.
2) In case of acute urinary infection, the infection should
be controlled before stent delivery.
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4¡¢Biliary Stents
Features:
 1)
Biliary stents in NiTi SMA are characterized by their excellent
biocompatibility, corrosion resistance , unique shape memory
effect and superelasticity. The internal stents are in soft
status at lower temperature (0¡æ¡«10¡æ) and can be deformed so
as to be inserted into the delivery device. Being led to the
predetermined position and located at body temperature, the
stents recover their original shape and exerts a retentive
and gentle force on the internal wall of the bile duct, making
the narrow position recover patency. Its radial supporting
force is over 6N.
2) The internal stents have superelasticity at body temperature.
They can wriggle along with the duct to accommodate normal
biliary peristalsis and keep the duct unobstructed.
3) The internal stent do not damage the internal wall of trachea
with two arcs in both ends. The operation is easy and the
curative effect is good.
Indication:
Indicated for patients curing biliary obstruction or stricture
caused by various kinds of malignant pathological changes.
Precautions:
The stent should not be used in strictures caused by benign
tumor growth.
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