self expanding nitinol medical esofagus stent placement
Esophageal stent
An esophageal stent is a stent (tube) placed in the esophagus to keep a blocked area open so the patient can swallow soft food and liquids. Esophageal stents may be self-expandable metallic stents, or made of plastic, or silicone, and may be used in the treatment of esophageal cancer.
A 2007 study showed no difference in the quality of palliation between plastic and metal stents, but a novel polyester mesh stent caused more complications, especially migration.
As of 2009, covered self-expanding metal stents were the only FDA-approved to be placed permanently. Occasionally, these stents may be placed as part of a clinical trial or as off-label use to repair esophageal leaks or fistulae. They are placed using the guidance of fluoroscopy (x-ray) and endoscopy. Usually, they are left in for less than four weeks.
Specification table
(for esophageal stents ):
| Stent diameter(mm) | Length(mm) | Specification of Introducer system |
| (Pipe diameter Fr × effective working length mm) |
| 16 | 60/80/100/120/140 | 24Fr ×700 |
| 18 | 60/80/100/120/140 | 24Fr ×700 |
| 20 | 60/80/100/120/140 | 24Fr ×700 |
| 22 | 60/80/100/120/140 | 24Fr ×700 |
(for umbrella gastric fistula stents ):
| Stent diameter(mm) | Middielend | Length(mm) | Specification of Introducer system |
| (mm) | (Pipe diameter Fr × effective working length mm) |
| 18 | 18/26/45 | 60/80/100/120 | 24Frx 700 |
| 20 | 20/26/45 | 60/80/100/120 | 24Frx 700 |
(for covered segmented esophageal stents ):
| Stent diameter(mm) | Middielend | Length(mm) | Specification of Introducer system |
| (mm) | (Pipe diameter Fr × effective working length mm) |
| 16 | 16/24 | 60/80/100/120/140 | 24Frx 700 |
| 18 | 18/26 | 60/80/100/120/140 | 24Frx 700 |
| 20 | 20/28 | 60/80/100/120/140 | 24Frx 700 |
| 22 | 22/28 | 60/80/100/120/140 | 24Frx 700 |
The code of stent shape:
A.Straight ends K. Tulip end-ball end T. Single cup with anti-reflux
C. Single tulip end P. Tulip end-cup end G. Single cup end
D. Double tulip ends Q. Cup end-ball end H. Double cup ends
E. Single ball end R. Single tulip end with anti-reflux V. Straight end with anti-reflux
F. Double ball ends S. Single ball end with anti-reflux W. Segmented with double cup ends
Stent System Structure Sketch
As to the covering ways,please refer to the “covering instruction of esophagus stent”
Covering instruction of esophagus stent
Conventional covering pattern
a. Uncovered
b. Ma (Partially covered)
c. Mb (Partially covered)
d. Mc (fully covered)
We also can offer follow customized covering pattern service:
e. Md (Partially covered)
f. Me (Partially covered)
g. Mf (Partially covered)
h. Mg (Partially covered)
Remark:
Gridding parts in the pictures means covered parts.
If you have anything puzzled ,pls feel free to let me know .
Our other stents show:
Our stent :
1. Esophagus stent
1.1 Covered esophagus stent
1.2 Umbrella gastric fistula stent
1.3 Covered segmented esophagus stent
2.Biliary stent
2.1 Conventional biliary stent
3. Intestinal stent
3.1 Pylorus stent
3.2 Duodenal stent(OTW/TTS)
3.3 Colon stent (OTW/TTS)
3.4 Rectum stent(OTW/TTS)
4. Trachea/Bronchus stent
4.1 Trachea/Bronchus stent
4.2 Y trachea/Bronchus stent
4.3 J-Trachea/Bronchus stent
