Probe Covers

Probe covers have to be used to wrap or cover probes to protect patients from contamination since ultrasound probes themselves cannot be easily sterilized.

Probe covers made of a dipped polymer material or thin polymer foil are what covers probes used for ultrasound, like a sheath.

Air has to be eliminated from probe covers because it is a bad ultrasound conductor. When you insert something into a bag or sheath, inevitably there are air pockets or bubbles. To avoid bubbles, it is necessary to partially fill probe covers with ultrasound conducting gel. This ultrasound gel conducts ultrasound between the ultrasound probe and the probe covers.

Many probe covers are available and can be made of tubular sheaths of plastic, laytex, or other polymer material, and even thin polymer foil. Some probe covers are pre-gelled, and others have to be filled with gel prior to use.

Thin polymer foil probe covers are cut to appropriate shape and heat sealed at the edges to form a tube with a closed end and an open end. These often fit badly on ultrasound probes, and ears and other sharp or abrasive protrusions of polymer foil material at the closed end portion of the cover are irritants, and may even damage sensitive mucosa in the body cavities where inserted.

Note: Laytex probe covers can be allergenic.

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