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STENT NITI-S » ESOPHAGEAL STENT
Esophageal stent

 Indications for:
- Esophageal perforation
- Tracheoesophageal fistula
- Esophageal ulcer
- Esophageal bleeding
- Esophageal varices
- Radiation-induced strictures
- Tumors of the esophagus
- Esophageal stents are effective in treating for palliation of malignant strictures and tracheo- esophageal fistulas; improving dysphagia in > 90% of patients with esophageal cancer and dysphagia due to extrinsic malignant compression; perforations caused by cancer, trauma, or other conditions
General features:
- Silicone prevents the risk of tissue invansion and is smooth inner surface
- Outer wire mesh prevents migration due to stick esophageal wall.
- Head diameter is bigger than body diameter 8mm prevents migration due to stick better
- Rounded edge at both head ends helps to reduce the tissue hyperplasiareaction.
- Removal string at the proximal end facilitates safe and smooth removal and correct reposition
- Many option for releasing delivery system (distal, proximal), the doctors can control distal or proximal stricture.
- Rounded edge at both head ends helps to reduce the tissue hyperplasia reaction.
- It has 8 radiopaque markers for the better control of deploying stent.

2.1. Head-type
- Construction of stent is S-type body with both heads (dumbblell shape) prevents migration due to stick esophageal wall better
- This stent is suitable for 1/3 part at central of esophagus
- It’s TTS  (Through the scope) and OTW (over the wire)


- TTS: stent loaded into 10.5Fr delivery system allows to pass through Working Channel of scope
- Radiopaque marker: 4 at the both ends and 2 at the middle

2.2. Flare-type
- Stent expands rapidly to compress the varices in the esophageal wall
- Both flare ends designed to prevents the risk of migration
- Radiopaque marker: 4 at the both ends and 2 at the middle

2.3. Double-type – exclusive design
- Structure: as head-type but this stent add outer uncovered mesh wire prevents risk of migration
- Radiopaque marker: 4 at the both ends & 2 at the middle

2.4. Valve-type
- Based on Double-type but Valve-type stent add anti-reflux PTFE skirt at the bottom of stent, it will automatically shut and open in proportion contraction and relaxation of stomach to prevents gastric reflux. This stent is designed for placement at EG junction.
- Radiopaque marker: 4 at the both ends & 2 at the middle of frist and second stent

                     

2.5. Cervial-type
- Especially short proximal head prevents damage to vocal cords in cases positioning were close to the upper esophageal sphincter.
- Radiopaque marker: 4 at the both ends and 2 at the middle

2.6. Conio-type
- Dr. Massimo Conio invented this stent and has treated patients with refractory hypopharygeal strictures after combined therapy for larygeal cancer
- Radiopaque marker: 4 at the both ends & 2 at the middle