EVD Catheter vs Shunt Ventricular Catheter: What Differs
EVD catheter vs shunt ventricular catheter: how the 1.5/3.0 mm, 31 cm and 1.3/2.5 mm, 23 cm catheters differ in role, accessories, connections and ordering.
DESU’s EVD catheter has a 1.5 mm inner and 3.0 mm outer diameter and is 31 cm long. Its shunt ventricular catheter has a 1.3 mm inner and 2.5 mm outer diameter and is 23 cm long. The EVD catheter carries CSF out to an external system such as the EVD-010; the shunt catheter carries CSF into an implanted valve.
Key takeaways
- DESU’s EVD catheter is 1.5 mm inner, 3.0 mm outer diameter and 31 cm long.
- Its shunt ventricular catheter is 1.3 mm inner, 2.5 mm outer diameter and 23 cm long.
- One leads to an external drainage system, the other into an implanted shunt valve.
- Both come in standard and antibiotic-impregnated versions.
Both catheters sit in the ventricle, so they are easy to treat as the same product on a stock list, especially for teams that handle EVD sets and shunt systems side by side. They are different products. Placement and catheter choice remain clinical decisions for the surgeon, under the instructions for use.
What is each catheter for?
The catheter in the EVD-010 Series is the primary catheter that transfers CSF from the ventricular system to the external drainage system. External drainage is generally a temporary measure, and the catheter leaves the body to reach a line, scale, drip chamber and bag at the bedside.
The catheter in the ventricular catheter kit is the proximal catheter that transfers CSF into a shunt system. It connects to a valve and stays implanted as part of a long-term shunt, with a peritoneal catheter carrying the fluid on to the peritoneal cavity. It is silicone, with tantalum length marks from 5–15 cm and 24 drainage holes in four rows of six.
How do the two catheters compare?
| Feature | EVD catheter | Shunt ventricular catheter |
|---|---|---|
| Inner diameter | 1.5 mm | 1.3 mm |
| Outer diameter | 3.0 mm | 2.5 mm |
| Length | 31 cm | 23 cm |
| Leads to | External drainage system | Shunt valve |
| Supplied with | Stylet, fixation tab, Luer Lock connector and distal cap, angled trocar | Stylet, right-angled connector |
| Antibiotic-impregnated option | Yes, 28-day controlled release | Yes, 28-day controlled release |
What do the numbers mean in practice?
Compared with the shunt catheter, the EVD catheter has a 0.2 mm wider lumen, is 0.5 mm wider overall and is 8 cm longer. Working from the diameters, the wall is about 0.75 mm thick on the EVD catheter and 0.6 mm on the shunt catheter.
An external catheter has to leave the body and reach a connection, which is one reason teams think about usable length. External drainage is also used when CSF may carry blood or debris, so bore is a common topic in that setting. Which catheter suits a patient remains the surgeon’s call.
What comes with each catheter?
The accessories show the difference in use. With the EVD catheter, a stylet supports guided, controlled advancement, an angled trocar supports guidance and placement, a fixation tab helps stabilise the catheter after placement, and a Luer Lock connector with distal cap forms the link to the drainage system.
The shunt ventricular catheter comes with a stylet and a right-angled connector. The connector helps orient the catheter at an appropriate angle and forms the connection with the rest of the shunt system. There is no external line to join, so no Luer Lock connector is included.
Can one be used in place of the other?
They are not offered as interchangeable. Each belongs to its own system, with its own connection, and the outer diameters differ. Buyers should keep them on separate lines and should not substitute one for the other on an order.
Patients who start with an EVD may later need a shunt, but moving from one to the other is a clinical step, not a stock swap. For background, see EVD as a bridge to shunting.
Do both come in antibiotic-impregnated versions?
Yes. In both, the antibiotic is impregnated into the material and released in a controlled manner over 28 days. Impregnated catheters are orange and standard catheters white. For the EVD side of that decision, see standard vs antibiotic-impregnated EVD catheters.
How can the two be told apart on the shelf?
Colour will not do it, because both catheters come in white and orange versions. Length and diameter on the label separate them, and so do the codes: EVD catheter codes begin with EVD, while the shunt ventricular catheter kit is SVCK or ASVCK. Keeping the two in separate, labelled locations reduces the chance of picking the wrong one in a hurry.
What should buyers check when ordering?
- EVD system with standard catheter: ENDS-C-010 for EVD-010, ENDS-C-020 for EVD-020.
- EVD system with antibiotic-impregnated catheter: ENDS-AC-010 or ENDS-AC-020.
- EVD catheter coded on its own: EVDCK-1530310 standard, EVDACK-1530310 antibiotic-impregnated.
- Shunt ventricular catheter kit: SVCK standard, ASVCK antibiotic-impregnated.
- Shunt kits: the same 23 cm ventricular catheter is included in Defit, Decurve and Depus VP kits, so it does not need ordering separately.
Antibiotic-impregnated EVD catheters are also coded at 35 cm, in 1.5 / 3.0 mm and 1.9 / 3.4 mm, so check all three figures on the order line rather than assuming 31 cm. A third catheter can also share the shelf: the EVD-020 is offered with a lumbar catheter, under the codes LCK-ENDS-020 and LACK-ENDS-020.
Talk to a DESU product specialist
If your team stocks both EVD and shunt catheters and wants to check codes and configurations, DESU’s product specialists can help. Write to sales@desu.tr, use the contact page, or request a quote.
Frequently asked questions
Is the EVD catheter sold without the drainage system?
Yes. EVD drainage catheters are also coded independently of the system, for example EVDCK-1530310 for the standard 1.5 / 3.0 mm, 31 cm catheter. The drainage bag can be supplied separately too.
Does the EVD-020 use the same ventricular catheter as the EVD-010?
The EVD-020 is offered with an external ventricular drainage catheter or a lumbar catheter, each standard or antibiotic-impregnated. Our product specialists can confirm the catheter dimensions for your order code.
Why does a shunt ventricular catheter come with a right-angled connector?
The connector helps orient the catheter at an appropriate angle and forms the connection with the other shunt components. It also guides the catheter without kinking or clogging.
Related standards
- ISO 13485: Medical devices — Quality management systems
- EN ISO 80369: Small-bore connectors for liquids and gases in healthcare applications