EVD Documentation for Biomed and Infection Control Teams

Infection prevention teams reviewing an EVD system want documents on sterility, packaging, single use, materials and any antibiotic-impregnated option. Clinical engineering, often called biomed, wants to know how the disposable system mounts, interfaces with other equipment and fits the unit. Both should receive answers drawn from controlled manufacturer documents, organized in one versioned folder per product.

Why do biomed and infection control ask for EVD documents?

An external drainage system is a sterile, single-use device that connects directly to the patient's CSF for days. Infection prevention teams therefore have a direct interest: ventriculitis and meningitis related to drains are recognized complications, and published guidance on healthcare-associated ventriculitis and meningitis addresses drain-related infection. The team will want to understand how the device fits into the hospital's EVD infection prevention bundle.

Clinical engineering has a different interest. An EVD is not capital equipment, but it hangs on poles and bed rails, may be used alongside pressure monitoring, and becomes part of the unit's equipment landscape. Biomed may be asked by nursing whether a mounting is secure, whether a component works with existing hardware, or how a system should be set up with leveling tools the unit already owns.

Both teams often sit on, or advise, the value analysis committee. A distributor who answers their questions quickly and accurately removes two of the most common reasons for delay.

What does infection prevention need to know?

Infection prevention questions usually fall into a predictable set. The manufacturer's documents should answer each one:

• How is the device sterilized, and how is sterility validated and indicated on the label?
• Is it single use, and how is that marked?
• What is the sterile barrier packaging, and how should staff check its integrity before use?
• What are the storage conditions and shelf life?
• What are the materials of patient-contacting components, and is there a biocompatibility summary, typically against ISO 10993?
• What do the instructions for use say about maintaining a closed system, emptying, bag changes and CSF sampling?
• For the antibiotic-impregnated catheter: how is it identified, how long is the agent released, and what contraindications are stated?

For DESU's antibiotic-impregnated catheters, the product information states that they are orange and that the agent is released in a controlled way over 28 days. The instructions for use give the full details, including the agents involved and the contraindications, and should be provided to infection prevention and pharmacy directly.

Where the device meets the hospital's bundle

Most hospitals manage EVD infection risk with a bundle: insertion technique, dressing care, limits on how often and how the system is accessed, CSF sampling practice, and criteria for removal. Infection prevention will read the instructions for use against that bundle. If the bundle limits sampling to a specific port or technique, they will check that the system supports it. If the bundle calls for a particular approach to bag changes, they will look for the matching steps in the instructions. Pointing them to the relevant sections, rather than sending the whole document without comment, shows that the distributor understands what they are trying to achieve.

What does clinical engineering need to know?

Biomed's questions are practical and physical:

• How does the system mount on IV poles or bed rails, and what holds the scale in position?
• What leveling method does the instructions for use describe, and does it work with the unit's leveling tools?
• Can the system be used alongside the unit's pressure monitoring, and if so, how does the manufacturer describe the connection?
• Which connector types does the system use?
• Are any components reusable? (For a sterile drainage system, normally none.)
• Are there any components with special handling or disposal requirements?

The honest answer to some of these questions may be that the system is not designed for a particular use. That answer is still valuable; it prevents improvised setups that nobody has validated.

Which documents answer which questions?

For DESU's drainage line, the specification facts are concrete. The EVD-010 Series has a 31 cm ventricular catheter, a 30 cm measuring scale, a 150 ml drip chamber and an 800 ml drainage bag, with a standard or antibiotic-impregnated catheter. The EVD-020 Series combines a pressure scale, drip chamber, drainage bag and filter, and is used with a ventricular or a lumbar catheter. The lumbar drainage catheter kit has an 80 cm silicone catheter with tantalum marks from 5 to 20 cm and 24 holes.

How should the documents be organized?

Reviewers lose patience with scattered files. A simple structure helps everyone:

• one folder per product family, with the item numbers covered listed at the top;
• each document named with its title, version and date;
• English-language versions for every document, with any translated labeling explained;
• a short index page stating which question each document answers;
• a contact at the distributor and at the manufacturer for follow-up questions.

Send the folder once, completely, rather than in pieces as questions arise. Then keep a record of what was sent to whom and when, so that updated versions can be sent to the same people.

How should questions beyond the documents be handled?

Infection prevention and biomed teams sometimes ask questions that the standard documents do not answer: a specific material question, a request for test details, or a scenario the instructions for use do not address. The distributor should not improvise. Record the question exactly, send it to the manufacturer, and return a written answer. If the manufacturer's answer is that a use is not covered by the instructions for use, pass that on clearly.

DESU, which designs and manufactures its products in its own cleanrooms under an ISO 13485 quality management system, can answer these questions from its technical documentation. A direct line between the hospital's specialists and the manufacturer's technical team, coordinated by the distributor, is often the fastest route.

How often should the documents be updated?

Whenever the manufacturer revises a document, the distributor should send the new version to every hospital that received the old one, with a note on what changed. Certificates have expiry dates and should be replaced before they lapse. A yearly check of each account's document folder catches anything that slipped through.

Keeping lot information to hand

Infection prevention may later need to know which lot was used for a particular patient, for example during a review of drain-related infections. That depends on the hospital recording lot numbers at the bedside or at issue from stock, and on the distributor's records of which lots went to which hospital. Include a sample label in the document folder so staff know exactly where the lot number and expiry date appear, and agree how the hospital captures them.

Talk to a DESU product specialist

If a hospital's infection prevention or clinical engineering team is reviewing a drainage system, DESU's product specialists can supply the documentation they need and answer technical questions for your market. Write to sales@desu.tr or use the contact page to request the document set.