RU2243793C2 - Device for stimulating bone tissue regeneration - Google Patents

Abstract

FIELD: medical engineering.

SUBSTANCE: device has power supply source, electromagnetic oscillation source, treatment element, having two inductance coils connected in series and compliance, and capacitor forming an LC-circuit with the treatment element. The electromagnetic oscillation source is designed as self-excited oscillator, which oscillatory circuit is the LC-circuit with the treatment element. The device also has modulator unit set between the power supply source and self-excited oscillator circuit, control circuit connected to the self-excited oscillator circuit and having amplitude detector, AC amplifier and indicator unit connected in series and sectional U-shaped dielectric carcass having inductance coils of the treatment element mounted on its vertical elements and electric units of the device mounted on horizontal electric elements of the device. The self-excited oscillator produces high frequency oscillations in frequency bandwidth of 100-1000 kHz. The modulator unit has low frequency oscillator operating in the bandwidth of 10-5000 Hz. Carcass members are manufactured from hard dielectric material and connected to each other by means of flexible connection members.

EFFECT: wide range of functional applications.

2 cl, 2 dwg

Description

The invention relates to medicine, namely to traumatology and orthopedics. A known method of stimulating reparative regeneration of bone tissue and a device for its implementation [1].

The method is carried out by applying a low-frequency pulsed action to the affected area of the limb using metal electrodes. The disadvantage of this method is that the effect is carried out by a contact method and a low-frequency pulse signal is used.

A known method of stimulating reparative regeneration of bone tissue and a device for its implementation [2].

The method is carried out in a non-contact manner using an exposure element, which is made in the form of an inductor and a capacitor, the terminals of which are connected to the terminals of the coil winding.

A known device for stimulating reparative regeneration of bone tissue contains a power source, a pulse generator, the output of which is connected to the input of the block containing the pulse shaper, power amplifier, attenuator and transformer.

An impact element made in the form of a parallel oscillating circuit containing the winding of the inductor, a constant capacitor and a variable capacitor, the terminals of which are connected in parallel, is connected to the terminals of the secondary winding of the transformer by means of two capacitors.

The known device has only one inductor in the exposure element, which limits the operational capabilities of the device. The device circuit has no control elements.

The objective of the invention is to increase operational and therapeutic capabilities.

This is achieved by the fact that in the device for stimulating the regeneration of bone tissue containing a power source, a source of electromagnetic waves, an exposure element made in the form of an inductance coil, and a capacitor forming an LC circuit with an exposure element, according to the invention, the exposure element further includes a second inductor , the winding of which is connected to the winding of the first coil in series and according to the source of electromagnetic oscillations is made in the form of a self-oscillator, the oscillatory circuit to which is the LC circuit of the exposure element, a modulator is inserted into the device, connected between the power source and the oscillator circuit, a control circuit containing an amplitude detector connected in series, a DC amplifier and an indicator, as well as a prefabricated U-shaped dielectric frame on the vertical elements of which placed the inductance coils of the exposure element, and on the horizontal - the electrical elements of the devices, while the oscillator is configured to generate high-frequency fucking in the frequency range of 100-1000 kHz, and the modulator includes a generator of low-frequency oscillations in the range of 10-5000 Hz.

The essence of the invention lies in the fact that the exposure element is made in the form of two inductance coils, while the windings of these coils are placed on separate frames, connected in series and according to and form an inductive element, which is an integral part of the LC circuit at the same time the exposure element and the oscillator of the source of electromagnetic waves .

The device contains a control circuit for high-frequency oscillations.

Figure 1 shows a functional diagram of a device for stimulating the regeneration of bone tissue, figure 2 is a variant of the structural embodiment of the device.

The device comprises inductors 1 and 2, the windings of which are placed on separate dielectric frames, connected in series and in accordance. Both coils form an inductive element of the influence element, which is connected via a capacitor 3 to the circuit of the oscillator 4. Elements 1, 2, and 3 form an LC-oscillatory circuit, which is also an element of the resonant type and the oscillatory circuit of the oscillator - the source of electromagnetic waves.

The carrier frequency of the sinusoidal oscillations of the oscillator is determined by the magnitude of the inductance of the coils 1 and 2 and the capacitance of the capacitor 3. A control circuit containing a series-connected amplitude detector 7, a DC amplifier 8 and an indicator 9, which is made in the form of an LED, is connected to the circuit of the oscillator 4.

The circuit of the oscillator 4 is connected by means of a modulator 5 to a power source 6. The circuit of a modulator 5 comprises a source of low-frequency oscillations and a power amplifier.

The carrier frequency is selected in the range of 100-1000 kHz, the frequency of modulating oscillations is in the range of 10-5000 Hz. The low-frequency generator of the modulator 5 can be made in the form of a generator for fixed frequencies or in the form of a oscillating frequency generator.

Figure 2 shows a variant of the structural embodiment of the device.

The device comprises a prefabricated U-shaped frame, consisting of vertical elements 10 and 11, a horizontal element 12 and connecting elements 13 and 14.

Elements 10, 11 and 12 are made in the form of plates of a solid dielectric (vinyl plastic, fiberglass).

Elements 13 and 14 are made in the form of flexible metal plates of curved shape and act as connecting and springing elements.

On the elements 10 and 11, dielectric frames 15 and 16 are fixed, on which the windings of the coils 1 and 2 are placed. On the element 12, a hybrid circuit 17 is fixed, which contains the oscillator circuit 4 and the elements 7, 8, 9 of the control circuit.

The frames of inductors 1 and 2 can have a flat shape [3] or a cylindrical shape of a round or oval shape.

Flexible connecting elements 13 and 14 allow you to change the relative position of the inductors 1 and 2.

Inductors 1 and 2 and the hybrid circuit 17 are closed by casings 18, 19 and 20, made of a dielectric (polystyrene).

The device through the cable 21 is connected to a power source 6, which is made in the form of a separate functional element and includes a modulator 5 and, if necessary, a timer.

The device operates as follows.

The device is placed on a sore limb over a bone defect area. Turn on the power of the device. The exposure element emits high-frequency sinusoidal oscillations, amplitude-modulated by a low-frequency signal. In the presence of a high-frequency signal, indicator 9 lights up; when the relative position of the device and the biological object changes, the carrier frequency changes.

The power source can be either from a 220 V network or from a battery.

With battery power, the device is fixed on a sore limb and the patient has the ability to move around.

In this case, when moving, there is an additional modulation of electromagnetic waves in amplitude with infralow frequencies, which increases the therapeutic effect.

The device has been experimentally tested in hospitals in Omsk.

Sources of information

1. USSR author's certificate No. 554870, cl. A 61 N 1/00, 1975

2. RF patent No. 2165272, cl. 7 A 61 N 2/04, publ. 04/20/2001, bull. No. 11.

3. RF patent No. 2103913, class 6 A 61 V 5/05, publ. 02/10/98, bull. Number 4.

Claims (2)

1. A device for stimulating bone tissue regeneration, containing a power source, an electromagnetic oscillation source, an exposure element made in the form of an inductance coil, and a capacitor forming an LC circuit with an exposure element, characterized in that the exposure element further includes a second inductor, a winding which is connected to the winding of the first coil in series and according to the source of electromagnetic oscillations is made in the form of a self-oscillator, the oscillatory circuit of which is an LC circuit with an exposure element, a modulator is inserted into the device, connected between the power source and the oscillator circuit, a control circuit connected to the oscillator circuit and containing an amplitude detector connected in series, a DC amplifier and an indicator, as well as a prefabricated U-shaped dielectric frame, on vertical elements which placed the inductance coils of the exposure element, and on the horizontal - the electrical elements of the device, while the oscillator is configured to generate you co-frequency oscillations in the frequency range 100-1000 kHz, and the modulator includes a generator of low-frequency oscillations in the range of 10-5000 Hz. 2. The device according to claim 1, characterized in that the frame elements are made of solid dielectric and are interconnected using flexible connecting elements.

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