After each use (Earclips and Surface), clean with warm water and a mild detergent. Use a soft cloth or Q-tip. The disinfect with 70% alcohol or a water based disinfectant. Do not soak in water for prolonged periods, it causes deterioration of the electrode. Before use check the electrode damage and excessive wear. If in doubt, replace it.
Liquid “COLD” sterilization
When liquid cold sterilization is specified for a BIOPAC transducer, the following disinfectants are recommended:
Cidex OPA Disinfectant Solution, Johnson & Johnson
IMPORTANT: Always follow the manufacturer’s directions.
Needle Electrodes (Reusable)
Autoclave Exposure Temperature: 127 deg C
Exposure Time: 20 minutes
Ethylene Oxide (EO) Temp range: 51-56 deg C Vacuum: 40.64 cm Hg Relative Humidity: 50% +/- 10% Humidity dwell: 77 minutes EO gas: 12/88 Oxifume Gas Exposure rise: 12 psig Exposure time: 105 minutes
Airwashes Evacuate to 40.64cm Hg and slow release to atmospheric pressure; repeat for a total of three times.
! Some temperature probes are non-sterilizable and sensors should be replaced as necessary:
Non-sterilizable temperature probes include: • Fast-response surface temperature sensor: TSD202A and SS6L (use replacement sensor RX202A) • MR Conditional surface temperature sensor: TSD202A-MRI (use replacement sensor RX202A-MRI) • General-purpose waterproof thermistor: TSD202E and SS7L • Flexible waterproof thermistor: TSD202F and SS8L
Immersion temperature probes may be cleaned using standard liquid disinfectant methods, with direct immersion for the recommended period.
Wipe down non-immersion probes with liquid disinfectant or alcohol.
EL254 and EL258 reusable electrodes
TSD203 and SS3LA Skin Conductance Transducers
GEL should immediately be cleaned off the electrodes after each use. Dried gel will act as an insulator decreasing electrical contact with the skin, and the Ag-AgCl electrode disk could degrade quickly with time because of the porous electrode surface.
To clean the electrodes, wet a cotton swab or toothbrush with water and remove the electrode gel. Always dry the electrodes after cleaning.
If needed, use Hydrogen Peroxide solution (2-3%) to brighten electrode surface (optional) or to sterilize the electrode. Do not place the electrode in solution, but rather use a cotton swab or toothbrush. Dry the electrodes after cleaning.
If a dark residue remains after the above cleaning methods are used, then a cleaner with pumice can be used on the wetted cotton swab or toothbrush.
Mouthpieces and couplers are supplied non-sterile and should be sterilized before use for pulmonary equipment interconnects.
Acceptable sterilization techniques
Autoclaving – preferred method 250°F for 14 minutes or 240°F for 23 minutes
Ethylene Oxide 125-131°F Ethylene oxide aeration time is greatly dependent on the size of the master carton and its permeability. One week is the minimum requirement to bring the EtO residuals below 1 PPM as tested by the standards liquid extraction method. If the product is heated to 123-135 F in an aeration chamber with high airflow, the time can be accelerated to as little as four days.
Inspect after sterilization for deterioration. Dispose if damaged.
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