CN102512761A - Adjustable therapeutic instrument capable of low stimulation body electromagnetic field biological effect adjustment - Google Patents

Abstract

An adjustable low-stimulation therapy device for regulating the biological effects of electromagnetic fields in the body, including a Helmholtz coil, a voltage-adjustable DC power supply, a clock circuit and an amplifier. The positive output terminal of the voltage-adjustable DC power supply is connected to the Helmholtz coil. One terminal of the coil and the other terminal of the Helmholtz coil are connected to the output terminal of the amplifier, the output terminal of the clock circuit is connected to the input terminal of the amplifier, and the ground terminal of the amplifier is connected to the negative pole of the voltage-adjustable DC power supply. The present invention controls the magnetic field intensity of the Helmholtz coil through a voltage-adjustable DC power supply, which is convenient and fast, and has high control precision; the parameters of the Helmholtz coil are determined through a large number of practices, and are useful for promoting fracture healing and treating osteoporosis Has a good effect. The invention has the advantages of simple structure, good therapeutic effect, safe use and no side effect.

Description

Adjustable low-stimulation therapy device for regulating the biological effects of electromagnetic fields in the body

technical field

The invention relates to a therapeutic instrument, in particular to an adjustable low-stimulation therapeutic instrument for regulating the biological effect of an electromagnetic field of a body.

Background technique

For patients with fractures, doctors will fix the affected area with splints and plaster. Practice has proved that applying magnetic force lines to the affected area will play a good role in auxiliary treatment. At this time, the magnetic force lines penetrate the splint, plaster and clothing outside the fracture site. Acting on the subcutaneous tissue and bones, it produces a series of magnetic field biological effects to achieve the therapeutic effects of detumescence, anti-inflammation, analgesia and promotion of fracture healing.

The Helmholtz coil is a pair of identical current-carrying circular coils parallel to each other and coaxial, and the current is passed in the same direction. When the distance between the coils is equal to the coil radius, the total magnetic field of the two current-carrying coils is relatively close to the midpoint of the axis. uniform over a large area. Because the Helmholtz coil has the characteristic of uniform magnetic field, people consider using the Helmholtz coil for the treatment of bone trauma, but there has been no unified conclusion on how to use the Helmholtz coil and how to effectively control the strength of the magnetic field. thus limiting its use.

Contents of the invention

Aiming at the problem that the Helmholtz coil in the prior art cannot be effectively applied to the treatment of bone trauma and osteoporosis, the invention provides a therapeutic apparatus.

The purpose of the present invention is achieved through the following technical solutions:

An adjustable low-stimulation therapeutic device for regulating the biological effects of electromagnetic fields in the body, characterized in that it includes a Helmholtz coil, a voltage-adjustable DC power supply, a clock circuit and an amplifier, and the positive output terminal of the voltage-adjustable DC power supply is connected to One terminal of the Helmholtz coil, the other terminal of the Helmholtz coil is connected to the output terminal of the amplifier, the output terminal of the clock circuit is connected to the input terminal of the amplifier, and the ground terminal of the amplifier is connected to the negative pole of the voltage-adjustable DC power supply .

The inner diameter and outer diameter of the Helmholtz coil are 230-260 mm respectively, the number of turns of a coil is 200 turns, and the diameter of the copper wire is 0.9 mm.

The two coils of the Helmholtz coil are fixed outside a cylinder, and a bracket is provided at the lower part of the coils.

The present invention controls the magnetic field strength of the Helmholtz coil through a voltage-adjustable DC power supply, which is convenient and fast, and has high control precision; the parameters of the Helmholtz coil are determined through a large number of practices, and are useful for promoting fracture healing and treating osteoporosis Has a good effect. The invention has the advantages of simple structure, good therapeutic effect, safe use and no side effect.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic diagram of the end face structure of the Helmholtz coil of the present invention;

Fig. 3 is a left side view of Fig. 2 .

Detailed ways

With reference to Fig. 1, a kind of adjustable low stimulation of the present invention regulates the therapeutic apparatus of electromagnetic field biological effect of the body, and it comprises Helmholtz coil 1, voltage adjustable DC power supply 2, clock circuit 3 and triode 4, Helmholtz coil The two coils of 1 are connected in series or in parallel, the positive output end of the voltage adjustable DC power supply 2 is connected to one terminal of the Helmholtz coil 1, and the other terminal of the Helmholtz coil 1 is connected to the collector of the triode 4 electrode, the output end of the clock circuit 3 is connected to the base of the triode 4, and the emitter of the triode 4 is connected to the negative output end of the voltage-adjustable DC power supply 2. Transistor 4 can also be replaced by other amplifiers (such as composite amplifiers or integrated circuits).

The inner diameter D1 and the outer diameter D2 of the two annular coils constituting the Helmholtz coil 1 are 230-260 mm respectively, and the number of turns of the copper wire 11 of each coil is 200 turns, and the section is concave along the circumference. In the annular coil clamp 12 (insulating material), the diameter of the copper wire 11 is 0.9mm, and the two lead wires 13 of the Helmholtz coil 1 are connected to the circuit. The two coils are coaxially fixed on the outer peripheral surface of an insulating cylinder 5 with several bolts 6, and the inside of the cylinder 5 is used as a treatment area. A bracket 7 is fixed outside the lower part of each circular coil.

When the present invention is working, the voltage-adjustable DC power supply 2 controls the on-off of the triode 4 through the clock circuit 3, and the on-off frequency is controlled to be 10 Hz, and the generated pulse current is near the midpoint of the axis of the two coils of the Helmholtz coil 1 The area (inside the cylinder 5) generates a uniform pulsed magnetic field, and the bone trauma and osteoporosis can be treated by putting the parts of the human body that need to be treated into this area.

The innovation of the present invention is:

1. What other inventions of the same kind apply is the fixed frequency and intensity electromagnetic field produced by civil alternating current. The present invention uses a voltage-adjustable DC power supply. During operation, the clock circuit controls the on-off of the triode to generate an electromagnetic field with stable intensity and adjustable frequency.

2. The maximum direct current of the present invention is 12V, which ensures the safety of the present invention in application.

3. Compared with direct current and alternating current, the magnetic field generated by direct current is stable and continuous. And the added clock circuit can artificially control the frequency of the electromagnetic field.

4. The strength of the magnetic field can be controlled by increasing the number of turns of the Helmholtz coil, which solves the difference in treatment caused by fat factors.

The above-mentioned embodiments are only exemplary descriptions of this patent and do not limit its protection scope. Those skilled in the art can also make partial changes to it. As long as they do not exceed the spirit of this patent, they are all shown as equivalent replacements to this patent. within the protection scope of this patent.

Claims (3)

1. An adjustable low-stimulation therapeutic instrument for regulating the electromagnetic field biological effect of the body, characterized in that it comprises a Helmholtz coil, a voltage-adjustable DC power supply, a clock circuit and an amplifier, and the positive pole output of the voltage-adjustable DC power supply The terminal is connected to one terminal of the Helmholtz coil, the other terminal of the Helmholtz coil is connected to the output terminal of the amplifier, the output terminal of the clock circuit is connected to the input terminal of the amplifier, the ground terminal of the amplifier is connected to the voltage adjustable DC power supply Negative connection. 2. The adjustable low-stimulation therapeutic apparatus for regulating the electromagnetic field biological effect of the body according to claim 1, wherein the inner diameter and the outer diameter of the Helmholtz coil are respectively 230-260mm, and the turns of a coil The number is 200 turns, and the diameter of the copper wire is 0.9mm. 3. The adjustable low-stimulation therapeutic apparatus for regulating the electromagnetic field biological effect of the body according to claim 1, wherein the two coils of the Helmholtz coil are fixed outside a cylinder, at the bottom of the coil With stand.

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