C-Arm Drapes and Covers: Keeping the Sterile Field Intact

Why a C-arm needs a sterile barrier

The arm, detector and tube sit very close to the surgical site and are repeatedly moved over the patient. Their surfaces have cables, handles and vents that cannot be heat-sterilised, so they are treated as non-sterile. A drape separates these surfaces from the sterile field and from the surgeon's gloves and instruments.

Hospital policy, often aligned with national infection prevention guidelines, usually requires a barrier whenever any part of the machine enters the sterile zone. Confirm the exact rule with your infection control committee, because it can differ between facilities.

Types of C-arm drape and cover

Single-use covers are made in several designs. A full-arm cover with a tubular body slides over the C and is closed at the detector end. A shower-cap style drape fits over the detector or the tube head and is secured by an elastic edge or ties. Some kits combine a cover for the arm, a detector bonnet and a small drape for the control handle.

Covers with clips or adhesive strips help to hold the drape against the arm so it does not sag into the field. Whatever design you choose, the cover must be sized for the exact C-arm model, including the detector diameter or flat-panel width, and have transparent areas where operators need to see markings.

• Full-arm tubular cover with a sealed end
• Shower-cap drape for detector or tube head
• Cover with clips or adhesive tape for fixing
• Kit with several covers for arm, detector and handles
• Cover for the monitor cart or control panel when it is inside the field

How to apply a drape correctly

Put the drape on after the arm is in a neutral position and the patient is positioned, with a scrub nurse or surgeon handling the sterile outer surface. Unfold the cover so that the inside surface touches the machine only through the person's gloved hands, then pull it over the detector and the arm in one movement and secure the open end.

Check that the cover does not stretch over the image path: tight folds in the beam can produce artefacts, and a drape stuck to a vent may limit cooling. Compact units such as the Arcovis DRF-C are easier to drape thanks to a smaller footprint, but the same method applies to every model.

Cleaning the machine between cases

A drape does not replace cleaning. After each case wipe the touched surfaces, the handles, the foot pedal and the control panel with a disinfectant approved by the facility and compatible with the manufacturer's instructions. Pay attention to the detector surface and the monitor cart because they are often touched with contaminated gloves.

Never spray liquid into vents or connectors. Keep a short written cleaning checklist on the cart and record who cleaned the unit. Good cable management also reduces contamination, so route cables and keep them off the floor where possible; see C-arm maintenance and quality control for routine checks.

Common mistakes

The most frequent mistake is draping too early and then moving the arm through non-sterile areas, which breaks the barrier. Another is using a cover that is too short, leaving the detector rim exposed. Re-using a single-use drape or storing covers in damp conditions also reduces their protective value.

Staff protection should not be forgotten: radiation protection equipment is separate from drapes. For lead aprons and shields see radiation protection equipment.

What to agree with your supplier

Ask your supplier or biomedical team which drape sizes fit your models and where to buy them locally. Include covers in the tender so that every machine arrives with a starter stock and the nursing team has been trained to apply them. For equipment, installation and operator training, request a consultation from Beckfinity's specialists via the contact page.