Electrodes
E5250 Transcutaneous oxygen electrode
The E5250 electrode from Radiometer is used for O2 measurement and consists of a Clark electrode with a platinum cathode and a silver anode as reference. Upon measurement, the O2 diffuses through the skin and membrane into the electrode where the O2 is reduced, generating a measurable current. The size of the current determines the transcutaneous partial pressure of O2 (tcpO2).
The electrode heats the skin to 37.0 – 45.0°C in steps of 0.5°C to achieve full vasodilatation and to obtain significant tcpO2 measurements.
E5280 Transcutaneous oxygen and carbon dioxide electrode
The E5280 electrode from Radiometer is used for combined and simultaneous O2 and CO2 measurement and contains both a Clark electrode and a Stow-Severinghaus-type electrode. The Stow-Severinghaus-type electrode is a solid-state glass pH electrode. Upon measurement, the CO2 diffuses through the skin and membrane into the pH electrode where it dissolves, forming carbonic acid that changes the pH of the solution, which is measured and converted to the transcutaneous partial pressure of CO2 (tcpCO2).
The electrode heats the skin to 37.0 – 45.0°C in steps of 0.5°C to achieve full vasodilatation and to obtain significant tcpO2 measurements.
tcpO2/tcpCO2 Electrodes
The tcpO2 monitoring equipment PeriFlux System 5000 and the latest generation PeriFlux 6000 make use of high-quality tcpO2 and/or tcpCO2 electrodes from Radiometer. Each PeriFlux 6000 can be equipped with 1 – 8 electrodes and each PeriFlux System 5000 with 1 – 4 electrodes. Both single tcpO2 and combination tcpO2/tcpCO2 electrodes may be used.
Gas Mixture Calibration Standard for TC
The tcpCO2 electrode is calibrated using Gas Mixture Calibration Standard for TC (Calibration Gas) and TC 600 Calibration Unit.
Atmospheric air is used to calibrate the tcpO2 electrode. However, if the oxygen contents of the ambient air deviates from the oxygen content of normal atmospheric air (20.9% O2), Gas Mixture Calibration Standard for TC (Calibration Gas) may be used.
TC 555 Fixation rings
Perimed has developed fixation rings to facilitate the attachment of E5250 (tcpO2) and E5280 (tcpO2/tcpCO2) electrodes to the skin when monitoring transcutaneous oxygen/carbon dioxide. The rings have a small base diameter allowing for fixation to fingers, toes or other curvatures without risking leakage problems. TC 555 Fixation Ring Extra Strength has a special glue for better adhesion on patients with “problematic” skin. Fixation rings are delivered in kits together with TC 560 Contact Liquid.
Part no. |
Product name |
| 90-00054 | TC 555 Fixation Ring for tcpO2 – Extra Strength Adhesive (50 pcs) and TC 560 Contact Liquid (20 ml) |
| 90-00036 | TC 560 Contact Liquid (20 ml) |
D826 / D280 Membraning kits
E5250 (tcpO2) and E5280 (tcpO2/tcpCO2) electrodes need to be remembraned regularly. Two membraning kits are available, one for each electrode type. Each kit contains material for 12 remembraning procedures.
Part number |
Product name |
| 41990120 | D826 Membraning Kit tcpO2 (12 pcs) |
| 41990130 | D280 Membraning Kit tcpO2/CO2 (12 pcs) |
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