Inductothermy

Inductothermy is a method of treatment with the use of a high-frequency magnetic field, which causes the formation of heat on a pathological focus. When conducting induction procedures, special DKV-1, DKV-2, and IKV-4 devices are used, to which are connected: inductors - a cable 3.5 m long( in the form of an insulated wire) and two disks 20 and 30 cm in diameter( in the case of these disksa stranded wire in the form of a flat spiral of three turns is placed).These devices operate at a frequency of 13.56 MHz with a wavelength of 22.12 m, their electrical circuit includes five units, one of which is a power unit, and the others are a generator( preset operating mode) with a quartz frequency stabilizer;amplifier and therapeutic circuit, where discs or induction cables are installed, a holder for fixing inductors. A special shielded cable is used to connect the devices to the mains. When the device is switched on in the circuit of its oscillatory circuit, when a high-frequency electrical current passes through the turns of the inductor-electrode, a magnetic alternating high-frequency field arises, which in turn induces induction eddy currents in the nearby current-conducting tissues of the patient's pathological focus. Under the action of eddy currents, tissue is heated in the pathological focus. In view of the fact that the magnetic field under inductothermy refers to the range of short waves, in the special medical literature the term "short-wave diathermy" is most often used.

Special studies conducted in various clinics of the USSR in the 1970s and 1980s found that under the influence of inductothermy the following occurs:

• excitation of eddy currents in the tissues of the pathological focus of the patient( extending up to a depth of 6-8 cm with subsequentheat formation);

• the greatest heat formation was noted in tissues of the pathological focus, which had high electrical conductivity( lymph, blood, muscles, tissues of parenchymal organs);

• heat formation( more apparent in the depths of the patient's tissues and less in the skin and subcutaneous tissue);

• Oscillatory effect in the form of a more pronounced analgesic effect during the procedures;

• increase in local temperature from 1-1,5 ° С to 2-3 ° С, which promoted intensification of blood circulation in deep and peripheral areas( including in the area of ​​pathological focus);

• acceleration of enzyme exchange processes;

• increase in calcium accumulation in bone structural places of action by inductor electrodes( in particular, EVT - eddy current electrode);

• acceleration of regeneration and healing of tissues of pathological focus;

• stimulation of glucocorticoid function of the adrenal cortex;

• increased excretion of catecholamines, in particular in patients where there was a decrease in the level of catecholamines in the initial state;

• strengthening of resorption processes;

• reduction and suppression of inflammatory activity in acute, subacute and chronic phases when the average thermal dose is applied;

• enhancing the immunological properties of the body;

• Increased activity and intensity of phagocytosis;

• depression of vital activity of pathogenic bacteria;

• antispasmodic action( and pronounced) on sphincters, intestines, bronchi, vessels.

The amount of heat generated by the procedures and inductothermy when the vortex magnetic field acts on the pathological focus is determined by the formula:

Q = K × f2 × H2 × g,

where f is the oscillation frequency;

N - magnetic field strength;

g is the electrical conductivity of the fabric;

To is a coefficient determined by a special table.

The above studies established indications for induction procedures and contraindications were found simultaneously.

Indications for induction procedures:

• neuritis;

• radiculitis;

• traumatic nerve damage;

• metabolic-dystrophic arthritis;

• arthrosis.

Contraindications:

• violation of pain and temperature sensitivity of the skin;

• syringomyelia;

• purulent acute processes;

• malignant neoplasms;

• tendency to bleeding;

• tuberculosis;

• cardiovascular insufficiency of II and III degree;

• myocardial infarction.