Magnetotherapeutical device

FIELD: medical engineering.

SUBSTANCE: device has three concentric inductance coils arranged in mutually perpendicular relation to each other, control unit producing signals for controlling feeding voltage of winding of each inductance coil. The control unit has PC with software installed and interface unit and three-channeled power amplifier. The PC is connected to the power amplifier for controlling voltage on each coil. The power amplifier is used for supplying voltage to coil windings. Coil windings are arranged turn-by-turn in a way that turns of the same number intersect.

EFFECT: enhanced effectiveness of treatment.

5 dwg

 

The invention relates to medical equipment and can be used for magnetic therapy, and to examine the effect of low-frequency vortex magnetic fields on biological object.

Known magnetotherapy device (U.S. Pat. Of the Russian Federation No. 2084247, IPC5A 61 N 2/00, B. I. No. 20, 1997), contains a power supply that is connected to the inductor, made in the form of the armature winding, in which there is a cavity for placement of the bio-object, and the inductor is divided into separate, telescopically incoming one another coil associated with a lifting device. The disadvantage magnetotherapy installation is that it is bellegarrigue, contain mechanically moving parts and components, it is not possible to localize the radiation sufficiently specific body (body parts) with pathology, the installation does not use the vortex magnetic field, which is the most biotropic, that is inherent to the living body.

It is also known device for generating a magnetic field (zhitnika N.E., Nowicki AV, V. Privalov. and other Vortex magnetic fields in medicine and biology //Bulletin of new medical technologies. - 2000. - .VII, No. 1. - P.46-57)containing the control device with constant current source that is connected to the magnetic system, creating permanent and rotating communicated to the local field, made on the basis of a combination of lumped constant magnets (magnitudo), part of which is installed on the movable rotating disk.

A disadvantage of the known device is the presence of mechanically moving (motor) magnetic system, the complexity of switching the direction of rotation of the field, the inability to adjust the intensity of the field, limits the speed range of the field and the complexity of its mechanical adjustment. As a result of these limitations, the device does not allow to create a magnetic field changing in three-dimensional space on the module and the direction and acting on localized areas of the body. It is this field is inherent to the living body, that is, provides the maximum therapeutic effect.

The closest in relation to the claimed is magnetotherapy installation, includes a magnetic system of three concentric coils mounted mutually perpendicular to each other, and the forming unit supply voltage for each of the coils (see DE 2244394 A1, Schauf Gerhar Prof, 20.06.85). In the known device, as claimed, three mutually perpendicular coils describe the sphere, forming a chamber in which is placed the object of influence. In this case the supply voltage to the coil of each of the AC the ears is served separately, that allows the camera to a complex magnetic field. However, in the known installation management complex (total) magnetic field is not carried out using the PC software. In addition, in the inventive installation winding coils stacked round so that the same account coils windings intersect, which ensures the structural strength, as well as the identity of the three coils (geometric shape, dimensions, number of turns)than is achieved equality module of the magnetic fields of the three coils when applying the same signals.

The present invention is to increase therapeutic effect by creating a magnetic field that varies not only by the magnitude of tension, but also on the direction in space over time, and the program changes the magnetic field is set up on the computer. Magnetic field effects on local areas of a person (limb). The device is in a sense universal, because it allows you to create any field, changing in magnitude and direction in space with a wide range of frequency changes. The maximum effect of the treatment is achieved by the fact that the most appropriate program changes the magnetic field in the installation is selected on the basis of the diagnosis.

Declare m is glitteractica installation includes a control device, which is a personal computer with the device connected to it mate and three channel amplifier, and a magnetic system. A personal computer is supplied software, which sets the program change of the magnetic field.

Setting differs in that the magnetic system is made of three concentric coils are mutually perpendicular to each other. Winding coils stacked coil to a coil with alternating coil winding of the first, second and third coils, then there is the winding of the 1st row of the 1st coil, then the 1st row of the 2nd, 1 in the second row the 3rd, then the 2nd number of the 1st coil and so on. This embodiment of the coils of the magnetic system, firstly, provides mechanical strength of the whole structure, and second, it ensures the identity of the three coils (geometric shape, dimensions, number of turns)than is achieved equality module of the magnetic fields of the three coils when applying the same signal (the requirement of symmetry of the fields). The need for such placement of the windings occurs when creating a magnetic system that provides the desired value of magnetic induction. The size of the magnetic induction depends on flowing in the coil current and the number of turns. Limit the amount of current associated with the cross-section of the wire and its dline is. The last two values Express the resistance wire. Therefore, to obtain the desired magnitude of the magnetic field (units MTL) you must have a coil of wire sufficiently large cross-section, wound in several hundreds or thousands of turns. Thus, we get a high enough cross-sectional area of the entire winding of one coil. When you try to wind the coil otherwise you get a different average radii of the winding coils and the different coverage of the inner chamber, which will lead to the non-symmetry of the field coils, that is, when applying the same signal coil will generate different magnetic fields. Finally, this method of laying the windings provides better and more uniform heat transfer from the windings to the frame, which reduces the probability of formation of sites of local overheating of the windings and increases the reliability of the installation.

Three reels, the intersecting to form eight Windows in the form of spherical triangles, through one of which the magnetic system is injected limb, and through the opposite window limb comes out. Three mutually perpendicular coils describe the sphere, forming a chamber in which occurs the impact on the part of the extremity. Thus, localizing the area near the action.

Comparative analysis shows that the proposed magnetotherapy installation differs from the prototype in that it is composed of a control unit used PC software and device, as well as three-channel power amplifier, and for controlling the supply voltage of each coil inductance PC via interface unit connected to a power amplifier, by means of which the winding of the coils is supplied supply voltage. This ensures the most flexible control of the magnetic field necessary for more successful treatment of diseases, as the PC executes the control program field - that is, a program that sets a world line (a function of three coordinates by the coordinate axes and from time to time) of movement of the end of the magnetic induction vector of the total magnetic field in the magnetic system.

The total magnetic field is changed in three-dimensional space in the direction and magnitude over a wide range of frequencies, and the most appropriate program change field is set (selected or calculated) on the PC on the basis of diagnosis. Influencing the magnetic field is the sum of the three fields generated by each coil.

Software describes the interface to select or calculate the global line movement Konz is the magnetic induction vector of the total magnetic field in the magnetic system, the algorithm for calculating the functions of the three control signals, installing exchange Protocol data port with the device and the algorithm transfers data to the device in real time.

The drawings depicted: figure 1 - magnetic system, front view; figure 2 - magnetic system, left side view; figure 3 - magnetic system, top view; figure 4 is a structural diagram of magnetotherapy apparatus; figure 5 - principle of formation of the magnetic field in the installation.

The magnetic system of the apparatus consists of a non-magnetic aluminum frame 1 on which is wound a winding 2 of the three perpendicular to each other coils forming a chamber 3 in which is placed the limb. The windings have the pin 4 connected to a three-channel amplifier. The frame 1 by screws through the legs 5 is attached to the base 6, which is made in the form of a rectangular plate.

Magnetotherapy installation operates as follows.

The patient has the procedure while sitting, lying down or in a different position depending on the irradiated part of the body. The installation base 6 is placed on a horizontal surface. The patient enters the irradiated limb through the window in the form of a spherical triangle into the chamber 3 so that the exposed area of the limb was in the chamber 3. The operator includes installation in the network and sets of programs the movement of the magnetic field on the PC. Through the conductors of the power amplifier and the conclusions of the windings 4, three control voltage serves to coil 2 coils. Each of the three coils creates its own magnetic field with inductionrespectively (figure 3). The length and direction of each of these vectors depend on the signal frequency, and the direction and strength flowing through the corresponding coil current. Last through the resistance depends on the voltage applied to the ends of the winding coil. Need three voltage is created by three amplifiers that are controlled by the control unit on three channels. The facility is based on the principle of superposition (addition) of magnetic fields. Vectorsdirected along the coordinate axes x, y and z of a Cartesian coordinate system. At any time t the vectorsform the sides of a rectangular parallelepiped, and the diagonal of a parallelepiped is a vector. That is, vectoris the geometric sum of the vectors. In the next moment of time t+Δt vectorschange its length and direction (figure 3 that the vectors), and the resulting vectordiffers according to the module napravleniu from vector . As a result, the end of the vectordraws in the space of a curve which is programmed by the control device by setting time three control voltages.

Install easy to maintain and does not require special training (in technical terms) of the operator; making it possible for any engineering company.

The plant can be used in physical therapy offices, chambers of medical institutions and scientific research on creation of new medical technologies.

Implementation of the proposed magnetotherapy installation is planned in medical institutions of the Tula region.

Magnetotherapy installation comprising a magnetic system of three concentric coils mounted mutually perpendicular to each other, and the control unit providing a set signal to control the supply voltage winding of each inductor, characterized in that the control device includes PC software and device pairing and three-channel power amplifier, and for controlling the supply voltage of each coil inductance PC is connected to a power amplifier, by means of which the winding of the coils on the W supply voltage, when this winding coils stacked round so that the same account coils windings intersect.



 

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