Products - Ella CS




Personal references

Laasch HU, Marriott A, Wilbraham L, Tunnah S, England RE, Martin DF

Effectiveness of open versus antireflux stents for palliation of distal esophageal carcinoma and prevention of symptomatic gastroesophageal reflux. Radiology. 2002 Nov;225(2):359-65. doi: 10.1148/radiol.2252011763. PMID: 12409567

Conclusion: This antireflux stent is as safe and effective as the standard open stent in relieving malignant dysphagia and was successful in reducing symptomatic gastroesophageal reflux.

Basic description

Boubella is a metallic, self-expandable stent made of stainless steel. The stent is composed of individual connected segments with a massive anti-migration flare and is generally covered with polyethylene film. Optionally with or without antireflux valve.


Boubella is designed for relieving malignant or benign esophageal strictures if standard operation is contraindicated. The variant with an antireflux valve is intended primarily for the middle and distal part of the esophagus in cases where the stent passes through the cardia.

Features / Benefits

Boubella is made of stainless steel wire. The stent is composed of separate segments/ cells, thanks to which it retains its excellent expansion force and does not elongate during compression.
The stent design ensures effectiveness even in very rigid stenoses and, thanks to the massive anti-migration segment, reduces the risk of dislocation and migration.
Full coverage of the stent body with polyethylene film prevents the ingrowth of tumor tissue and allows the esophagorespiratory fistulas to be covered and sealed.
The larger diameter and shape of the proximal flare ensures tightness even in the partially dilated esophagus above the stenosis.
The option with an anti-reflux valve works to prevent gastroesophageal reflux and possible aspiration.
The retrieval loops at both stent ends are made of a special alloy and are characterized by high resistance and strength.
The ferromagnetic material of the stent is characterized by excellent radiopacity/ visibility under fluoroscopic control. Nevertheless, the stent is equipped with additional radiopaque contrast markers for better orientation during the stent placement.
MRI compatibility - the stent is made of ferromagnetic material, thus the product is classified as MR Unsafe.

Patent protected


The stent is supplied sterile and already compressed in a 750 mm long 28F / 18F (9.4mm / 6.0mm) delivery system. Stent insertion must be performed under combined endoscopic and fluoroscopic control
When the stent is released, the "splittable olive" at the end of the delivery system is released and split at the same time, thus avoiding the risk of the delivery system not being able to be withdrawn if the stent does not immediately expand to a sufficient diameter in a rigid stenosis.
For the implantation, we recommend using a very rigid (ultra stiff) guidewire 0.035” (0.89 mm) with a length of 220 cm.
The proximal anti-migration segment must be placed above the stenosis / outside the stricture in healthy tissue.

Boubella stent implantation

Available sizes

REF No. Stent body diameter [mm] Proximal flare stent diameter [mm] Stent full / active
length [mm]
014-01N-20-090-L 20 30 90 / 40 No
014-01N-20-105-L 105 / 55
014-01N-20-120-L 120 / 70
014-01N-20-135-L 135 / 85
014-01N-20-150-L 150 / 100
014-01N-20-165-L 165 / 115
014-01N-20-195-L 195 / 145
014-01N-20-210-L 210 / 160
014-02N-20-090-L 90 / 40 Yes
014-02N-20-105-L 105 / 55
014-02N-20-120-L 120 / 70
014-02N-20-135-L 135 / 85
014-02N-20-150-L 150 / 100
014-02N-20-165-L 165 / 115
014-02N-20-195-L 195 / 145
014-02N-20-210-L 210 / 160






FerX Ella esophageal covered stent

Cerná M, Köcher M, Dlouhý M, Neoral C, Gryga A, Duda M, Buriánková E, Aujeský R, el Sheikh H.

Acta Univ Palacki Olomuc Fac Med. 2000;143:79-80. PMID: 11144125.

Treatment of upper gastrointestinal leaks with a removable, covered, self-expanding metallic stent

Babor R, Talbot M, Tyndal A.

Surg Laparosc Endosc Percutan Tech. 2009 Feb;19(1):e1-4. doi: 10.1097/SLE.0b013e318196c706. PMID: 19238047.

Esophageal stents with antireflux valve for tumors of the distal esophagus and gastric cardia: a randomized trial

Homs MY, Wahab PJ, Kuipers EJ, Steyerberg EW, Grool TA, Haringsma J, Siersema PD

Gastrointest Endosc. 2004 Nov;60(5):695-702. doi: 10.1016/s0016-5107(04)02047-4. PMID: 15557944.

Self-expanding metal stent with anti-reflux valve for palliation of distal oesophageal carcinoma

Laasch H-U, Salahudeen HM, Lee F, England RE, Martin DF (2003.05.07

For more information on publications, visit our Education.section.


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