An endoscopic balloon dilator, or through-the-scope (TTS) balloon dilator, widens a stricture of the digestive tract or the bile duct under endoscopic control. The single-use balloon dilation catheter runs over a guidewire and is inflated with fluid. ExPander ranges from 4 mm biliary balloons to 40 mm achalasia balloons, and the graded balloon reaches three diameters on one catheter.
This page is intended for healthcare professionals.
Schematic, not to scale
16 models
| Balloon diameter (mm) | Balloon length (mm) | Smallest channel (mm) | SUT code | Model |
|---|---|---|---|---|
| Biliary single-size balloons | ||||
| 4 | 20 | 2.8 | GS1340 | 3410420 |
| 6 | 20 | 2.8 | GS1340 | 3410620 |
| 8 | 30 | 2.8 | GS1340 | 3410830 |
| 10 | 30 | 2.8 | GS1340 | 3411030 |
| 12 | 30 | 2.8 | GS1340 | 3411230 |
| Enteroscope version, 300 cm catheter | ||||
| 4 | 20 | 2.8 | GS2120 | 3410420-300 |
| 6 | 20 | 2.8 | GS2120 | 3410620-300 |
| 8 | 30 | 2.8 | No code | 3410830-300 |
| Graded balloons | ||||
| 6 / 7 / 8 | 20 | No code | 3410620PRO | |
| 6 / 7 / 8 | 20 | GS1340 | 3410630PRO | |
| 8 / 9 / 10 | 30 | No code | 3410830PRO | |
| 10 / 11 / 12 | 30 | No code | 3411030PRO | |
| 12 / 13.5 / 15 | 30 | GS1340 | 3411230PRO | |
| Achalasia balloons | ||||
| 30 | 80 | 4.7 | GS1350 | 3413080 |
| 35 | 80 | 4.7 | GS1350 | 3413580 |
| 40 | 80 | 4.7 | GS1350 | 3414080 |
The three-value cells are the graded balloons: one balloon goes up in three steps on the same catheter.
Blank cells: no size data.
A single-use endoscopic balloon dilator (TTS, through-the-scope), run over a guidewire, to dilate GI and biliary strictures.
Endoscopic balloon dilation opens a stricture by inflating a balloon inside it. The balloon passes through the working channel of the endoscope over a guidewire and is inflated with fluid. The manufacturer's instructions for use give the purpose as widening a stenosis in the gastrointestinal tract under endoscopic control. This page is about the endoscopic balloon for the digestive tract and the bile duct, not for the ear or the vessels.
A TTS balloon dilator is inflated with an inflation device that has a pressure gauge, at a steady, controlled pressure, as the instructions for use describe. The fill fluid is sterile isotonic saline, a low-viscosity radiopaque contrast medium or a mixture of the two, and the balloon is never filled with gas. The maximum inflation pressure given for the balloon is not exceeded. After the dilation the balloon is deflated completely, and the catheter is withdrawn only when it is empty.
A through-the-scope (TTS) balloon dilator passes through the working channel of the endoscope, so the balloon is advanced to the stricture without exchanging the scope. ExPander belongs to the same product class as balloons known by names such as CRE: TTS dilation balloons inflated with fluid, including graded balloons that reach three diameters on one catheter. The graded ExPander balloon goes up in three steps. This page makes no claim that one is better than another.
ExPander balloons run from 4 to 40 mm in four families. Biliary single-size balloons are 4 to 12 mm on a 20 or 30 mm balloon length. The same balloons come on a 300 cm catheter for enteroscopes. Graded balloons are one balloon with three diameters at three pressures, from 6 to 15 mm. Achalasia balloons are 30, 35 and 40 mm on an 80 mm balloon length.
The smallest channel depends on the model: 2.8 mm on the biliary balloons up to 12 mm and on the enteroscope versions, and 4.7 mm on the achalasia balloons. The catheter itself is 7 French and takes a guidewire up to 0.035 inch.
A graded ExPander balloon goes up in three steps on the same catheter, and each step has its own pressure. One balloon reaches 6, 7 and 8 mm at 3.0, 6.0 and 9.0 atm. The next reaches 8, 9 and 10 mm at 3.0, 5.5 and 8.0 atm. Then 10, 11 and 12 mm at 3.0, 5.0 and 7.0 atm, and 12, 13.5 and 15 mm at 3.0, 4.5 and 7.5 atm. The recommended equipment is an inflation and deflation device with a 0 to 440 PSI manometer.
A list price is not published on this page. The price depends on the balloon family (biliary single-size, graded or achalasia), the diameter and the quantity. To get a quote, use the Request an export quote button at the bottom of this page. Name the model code, the quantity and the destination country.
Melekırmak, an Istanbul-based medical device distributor, offers this balloon. The manufacturer is Medi-Globe / Endo-Flex. For availability, documentation and lead time in your country, use the Request an export quote button at the bottom of this page and name the model, the quantity and the destination country. For example, 3410420 is a 4 mm biliary balloon and 3413080 is a 30 mm achalasia balloon.
Based in Istanbul, Türkiye, we supply hospitals nationwide and answer international enquiries. Ask us about availability, documentation and lead times in your country.
Updated: 09.11.2026
