Science and Technology Daily, Moscow, May 16 (Reporter Dong Yingbi) Tomsk University of Technology in Russia has developed a device that can more accurately study the electrical activity of the heart and its tissue state, and it is easy to detect the early stages of cardiomyopathy that can lead to sudden cardiac death. sign.

Related research results were published in the "Measurement" magazine recently.

　　One of the most dangerous forms of the development of heart disease is the phenomenon of so-called sudden cardiac death.

This kind of death can happen within a few minutes, and the electrocardiogram used today can only record obvious changes and cannot predict potential threats.

The new device developed by Russian researchers can more accurately measure the electrical activity of the heart and detect the early pathological changes of cardiomyocytes to prevent sudden cardiac death without complicated surgical intervention.

　　Diana Avdeeva, head of the Medical Engineering Laboratory at Tomsk University of Technology, said that when drugs can be used to restore the work of cells, early diagnostic equipment can help with treatment.

For the first time, they found a non-invasive diagnosis method without heart surgery and no need to insert electrodes through a vein.

Because the new device not only provides ultra-high-resolution electrocardiograms in real time, but also records micro-electric potentials above 0.3 microvolts for a duration of more than 0.1 microseconds, which an electrocardiograph cannot do.

　　Avdeeva introduced that the new device can record the energy of nanovolt and microvolt electrical signals emitted by some cells. Its working principle is similar to that of an electrocardiogram, but due to the use of special nanosensors and specially designed software, it is extremely The earth improves the sensitivity.

　　The new device uses nano-scale silver chloride electrodes, each sensor has 16 thin ceramic plates, and silver nanoparticles are placed in the holes of the ceramic plates.

There are millions of particles in a sensor, and each particle is an electrode that amplifies the heart's magnetic field.

　　She said that the frequency range of the standard electrocardiograph is 0.05 Hz to 150 Hz, while the frequency range of the new instrument is between 0 and 10,000 Hz.

The sensor is fixed on the chest, and standard conductive glue is used to read the indicator. The monitoring process takes about 20 minutes.