Antibiotic-Impregnated vs Standard Catheters: What Actually Changes

An antibiotic-impregnated DESU catheter has the same inner and outer diameter, length, silicone material, tantalum length marks and drainage holes as its standard counterpart. Two things change: the antibiotic is impregnated into the silicone and released in a controlled manner over 28 days, and the catheter is orange rather than white, so the two versions can be told apart at a glance.

That holds across every DESU antibiotic-impregnated catheter option. Whether a patient receives an impregnated catheter is a decision for the surgeon and the hospital’s protocol, following the instructions for use.

What does “antibiotic-impregnated” mean for a DESU catheter?

In an antibiotic-impregnated DESU catheter, the active agent is carried within the catheter material itself: it is impregnated into the silicone that forms the catheter. Release of the agent is controlled and continues over 28 days.

Two practical points follow. First, the impregnation is a property of the catheter, not a separate component, so the kit does not gain an extra part. Second, the catheter geometry is unchanged. For a closer look at the release period itself, see the 28-day release explained.

Which dimensions stay the same?

The values below are identical in the standard and antibiotic-impregnated versions of each silicone catheter:

Both versions of every catheter are silicone and both carry tantalum length marks at every centimetre across the marked range, so position can be followed under imaging in the same way. The ventricular, lumbar and lumbar drainage catheters also have the same 24 drainage holes in both versions. The way tantalum marks work is covered in our article on catheter tantalum length marks and radiopacity.

What actually changes between the two versions?

Only these points differ between the standard and the antibiotic-impregnated versions:

Everything a surgeon measures, trims to length or reads off the marks is the same. What the hospital gains with the impregnated version is the 28-day controlled release; what it has to manage is that it now stocks two versions of the same catheter.

Why does the orange and white colour coding matter?

Because the two versions are dimensionally identical, colour is the quickest way to tell them apart once the catheter is out of its packaging. It helps at several points:

• Receiving and storage: a stock check can confirm at a glance that orange and white catheters are on the right shelf.
• The sterile field: the scrub nurse and surgeon can confirm the version before placement.
• The ward or ICU: staff caring for the patient can see which version was placed.

Colour supports identification at the point of use; the product label remains the reference for documentation and traceability.

Does the kit around the catheter change?

In complete kits, the accessories are the same in both versions:

• Ventriculoperitoneal catheter kit: in both versions, a 23 cm ventricular and a 120 cm peritoneal catheter with a stylet and a right-angled connector. In the impregnated kit, both catheters are antibiotic-impregnated.
• Lumboperitoneal catheter kit: in both versions, a 100 cm lumbar and a 120 cm peritoneal catheter with a 14 G Tuohy needle and guidewire. In the impregnated system, the lumbar catheter is antibiotic-impregnated and the peritoneal catheter is available as an antibiotic-impregnated option, so state the peritoneal version when ordering.

The ventricular catheter kit contains the catheter, a stylet and a right-angled connector. The lumbar drainage catheter kit contains the 80 cm catheter with a Tuohy needle, guidewire, angled trocar, Luer Lock connector, distal cap and fixation part.

What about EVD and shunt catheters?

The same principle runs through the rest of the range. The EVD-010 Series is offered with a standard or an antibiotic-impregnated 31 cm ventricular catheter of 1.5 mm inner and 3.0 mm outer diameter; the same catheter dimensions apply to both options. The EVD-020 Series is used with a ventricular or a lumbar catheter and also has an antibiotic-impregnated catheter option.

The Defit, Decurve and Depus shunt kits use a 23 cm ventricular catheter and a 120 cm peritoneal catheter with the dimensions in the table above, and offer antibiotic-impregnated configurations. Defit and Decurve are also available as full-antibiotic kits, in which the valve body is impregnated as well as the catheters.

What should buyers and nurses check?

• Order lines and requisitions name the version explicitly: standard or antibiotic-impregnated.
• On receipt, the catheter colour matches the version on the label: orange for impregnated, white for standard.
• Both versions are stored so the right one can be picked quickly, without relying on memory.
• Selection follows the hospital’s protocol and the surgeon’s decision, and handling follows the instructions for use.

Talk to a DESU product specialist

For the full comparison tables or help matching standard and antibiotic-impregnated versions to your catheter list, write to sales@desu.tr, use the contact page, or request a quote.