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Other electrochemical measuring devices
The electrode device of the present invention is composed of a metallic body 4, a thin film of alumina, and a jacket. The electrodes are heated and are connected via a multicore cable 7. A thick film substrate 8 is provided on the metallic body 4 and is made of alumina. It is provided with a heating resistor and a NTC-resistor. Alternatively, a thick film component can be provided on a substrate.
Another embodiment of the electrochemical measuring electrode device is shown in FIG. 10. The electrode housing 3 includes a protruding annular part called an end cap. The fixing ring 17 has a covering part called a dot-and-dash line. The metallic body 16 is mounted on the ring. The outer ring is made of a thermally insulating material. The measuring device is usually equipped with a dual-sided adhesive cylinder or double-sided adhesive sleeve to avoid skin damage.
The electrodes of electrochemical measuring devices can also be used in conjunction with a vacuum source to measure local capillary blood flow. This makes them ideal for use in a clinical setting, where rapid changes in temperature are necessary to assess a patient's condition. This can reduce measurement errors. However, the thickness of the ring is still a consideration. A thick-film electrode can also be more accurate, since the tip can respond to temperature changes caused by blood flow more accurately.
Another electrochemical measuring device is a sensor. The electrode is mounted on the skin of the patient and connects to the electrode. The membrane creates a closed chamber. The measurement chamber is filled with a liquid or gel. Other suitable mediums can also be used. There is a high probability that a small amount of the electrode will be in contact with the patient, especially if the electrodes are too close. The patient is then exposed to the conductive medium.
An electrochemical measuring device is a transcutaneous device. It consists of a sensor part with a semi-permeable membrane and an annular mounting member with a skin-contacting surface. The electrodes are inserted into the skin of the patient, where they measure the blood parameter. A temperature difference of one electrode with another is not significant. The sensors are thermostated, and they are generally insulated. This helps them detect changes in a blood parameter.
The electrode device has a thermal resistance of at least one order of magnitude higher than the capillary bed. The device includes a cathode and an anode cooperating with each other. In addition to a cathode, the electrodes are capable of electrochemically reducing oxygen. The electrodes can measure the partial pressure of oxygen in blood. They are particularly useful for monitoring blood glucose levels in the patient's vein.