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7. Maintenance > 7.4. Making degassed acoustic contact liquid
CAUTION
Disinfecting a medical product room by means of sprays is not recommended, since the
vapor could penetrate the product, causing electrical short-circuits, metal corrosion or
other damage to the product.
If non-flammable, non-explosive sprays are to be used, the product must first be switched off and
allowed to cool down. This prevents convection currents drawing spray mist into the product.
Plastic sheeting must be used to cover the product thoroughly, after which spraying can begin.
Once all traces of the vapor have dispersed, the plastic sheeting can be removed and the product
itself can be disinfected or sterilized in the way recommended above.
If a spray was used, you must be satisfied that all traces of the vapor have dispersed before
switching the product on again.
7.3.1. Cleaning the system
1.
Wipe off water from the ultrasound window with an absorbent cloth.
2.
Wipe the membrane (and the grooves) of the ultrasound window with a strong cleaning agent.
3.
Clean the system covers with a mild washing agent to prevent staining or fading of the surfaces.
Staining is a visual problem only and does not cause any other problems.
4.
Clean the mattresses with a washing agent mixed with water.
5.
Dry the mattresses with cloth.
6.
Regularly inspect the ultrasound window for cracks and other defects that may compromise the
efficiency of disinfection. Make sure that the grooves and corners are sufficiently cleaned.
7.3.2. Cleaning the vacuum cushion
The covers of the vacuum formed positioning accessories such as cushions are made of
polyurethane coated fabric. Wipe the cushion with water and soap, or some other common
detergent not containing biologically active ingredients. Do not bleach. Let the fabric dry completely
before storage.
7.3.3. Cleaning the DISCfill tool
DISCfill can be cleaned in the same way as the top surface of the Sonalleve Table Top, using
cleaning agents that are permitted for cleaning all surfaces.
7.4. Making degassed acoustic contact liquid
Degassed water or a degassed mixture of ultrasound gel and water is used as acoustic contact
liquid in MR-HIFU. As air bubbles in the ultrasound beam path may cause undesirable effects, such
as reflections or local heating, the acoustic contact liquid must be degassed. The amount of
dissolved oxygen must be below 4 mg/l (ppm, parts per million).
Degassed water
NOTICE
A specially designed EasyWater Degasser is available from the manufacturer for producing
degassed water. Further details can be found in the EasyWater Degasser Instructions for Use.
Instructions for Use
109745C2 / 02-2022
148 (192)
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