Focusing magnetic core for pelvic floor magnetic stimulation

Abstract

The utility model discloses a focusing magnetic core for pelvic floor magnetic stimulation, and relates to the technical field of medical equipment.The focusing magnetic core comprises a heat dissipation hollow copper pipe, a coil, a magnetic conductive material and a U-shaped magnetic core, the U-shaped magnetic core is used for controlling and transmitting more magnetic lines, the depth of magnetic stimulation is guaranteed, and the magnetic stimulation effect is improved through the special structural design. Gathering magnetic lines at the boundary of the magnetic core; meanwhile, the magnetic field area is controlled through the heat dissipation hollow copper pipe and the magnetic conducting material, magnetic field focusing is achieved, and the problems that an existing magnetic core is wide in stimulation range, and a non-treatment area is stimulated are solved; in addition, due to the unique structural design of the heat dissipation hollow copper pipe and the coil, the heat dissipation efficiency is improved, and the overall impedance is reduced; the pelvic floor magnetic stimulation therapeutic apparatus ensures the magnetic stimulation depth, improves the treatment comfort, and is suitable for pelvic floor magnetic stimulation treatment.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field, concretely is a kind of focusing magnetic core for pelvic floor magnetic stimulation. BACKGROUND

[0002] Pelvic floor magnetic stimulation is a non-invasive physical therapy method, which uses time-varying electric field to generate time-varying magnetic field through coil, and then generates induced current in human tissue, stimulates pelvic floor nerve and muscle, and thus triggers a series of physiological and biochemical reactions to achieve the purpose of treating pelvic floor dysfunction.

[0003] The magnetic stimulation has strong penetration and can stimulate deeper muscles and nerves, and has a wider stimulation range, which can stimulate the entire pelvic floor nerve and muscle, not just the muscles and nerves around the electrode.

[0004] Compared with the cerebral cortex, the pelvic floor tissue of the human body is more complex, and the depth of the stimulation area is deeper. Simply relying on the coil wound by copper pipe commonly used in transcranial magnetic stimulation requires a larger current, which causes the coil to overheat and cannot normally complete the pelvic floor high-frequency treatment program. Therefore, the existing pelvic floor magnetic stimulation often increases the magnetic core. After increasing the magnetic core, the magnetic field strength and the stimulation depth can be greater under the same current, and the magnetic field strength can also be reached at a lower occurrence voltage.

[0005] In order to increase the magnetic field strength, the effective cross section of the magnetic core is relatively large, so that enough magnetic force lines can pass through. However, the relatively large cross-sectional area increases the stimulation range of the magnetic field, resulting in stimulation of non-treatment areas. When the user wants to obtain a deeper stimulation area, the non-treatment area is strongly stimulated, causing a needle pain sensation, forcing the user to be unable to normally complete the treatment process. SUMMARY

[0006] The utility model aims at providing a focusing magnetic core for pelvic floor magnetic stimulation to solve the problems in the prior art.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a focusing magnetic core for pelvic floor magnetic stimulation, comprising: a magnetic core, a coil installed on the magnetic core, the coil is a circular coil with a step structure and is surrounded in mosquito coil winding method.

[0008] The coil in mosquito coil winding method can enhance the depth of magnetic stimulation.

[0009] Further, the coil is divided into upper and lower layers, and the number of turns of the upper coil and the number of turns of the lower coil are not uniform.

[0010] The focusing property of the coil gradually deteriorates as the radius increases, and the focusing property of the magnetic field can be improved by the coil structure.

[0011] Further, the surfaces of the upper coil and the lower coil are covered by the heat dissipation hollow copper pipe.

[0012] Since the coil has a stepped coil structure, the heat dissipation hollow copper pipe can be well laid at the steps of the upper coil and the lower coil, increasing the contact area of the heat dissipation hollow copper pipe and the coil, greatly improving the heat dissipation efficiency. In addition, the heat dissipation is mainly borne by the heat dissipation hollow copper pipe, so the coil can be made of thin copper wire or copper braided wire, further reducing the DCR of the coil and the heating power. Since the heat dissipation hollow copper pipe is not the main generator of the magnetic field, the inner diameter can be appropriately increased to further improve the liquid cooling efficiency.

[0013] In addition, according to Faraday's law of electromagnetic induction and Lenz's law, an induced current will be generated in the heat dissipation hollow copper pipe, which is opposite in direction to the current in the coil, and the magnetic fields generated by the induced current in the heat dissipation hollow copper pipe and the coil interfere with and cancel each other. The calculation formula of the induced current in the heat dissipation hollow copper pipe is:

[0014] ;

[0015] wherein, i s I represents the induced current in the heat dissipation hollow copper pipe, i c I represents the current of the coil, r s R represents the resistance of the heat dissipation hollow copper pipe, L s L represents the inductance of the heat dissipation hollow copper pipe, M M represents the mutual inductance between the magnetic field of the heat dissipation hollow copper pipe and the coil, j 、 w is an empirical formula calculation coefficient;

[0016] Through analysis of the formula, it can be seen that in the case of low frequency (lower than 300 Hz, the working frequency of the magnetic stimulator is 1-150 Hz) then It can be seen that the induced current in the shielding body is relatively small, which can control the magnetic field around the coil to a certain extent.

[0017] As can be seen from the above analysis, the heat dissipation hollow copper pipe can control the magnetic field region and further improve the focusing property of the magnetic field.

[0018] Further, the center of the coil is embedded with a magnetic conductive material, and the inner diameter of the coil is larger than the magnetic conductive material.

[0019] The magnetic conductive material refers to a material capable of reaching maximum magnetization under the action of an external magnetic field, and the value of the magnetic induction intensity when reaching the saturation state is high.

[0020] Further, the magnetic core includes two U-shaped magnetic cores connected in series, wherein the side surface of the first leg of one of the U-shaped magnetic cores is spliced with the side surface of the second leg of the other U-shaped magnetic core, the outer diameter of the coil is greater than the cross section of the top of the two legs spliced together, and the coil is mounted on the cross section.

[0021] The U-shaped magnetic core includes but is not limited to a silicon steel sheet, and the principle of magnetic focusing is that when an alternating current is applied inside the coil, an alternating magnetic field is generated inside the magnetic core, and then an eddy current electric field is generated, when the magnetic field in the magnetic core changes, due to the influence of the eddy current electric field, the change of the magnetic field cannot be synchronized with the electric field, which will cause the change of the magnetic field to be weaker in the place where the eddy current electric field is weaker, which will cause more magnetic lines of force to focus on the boundary of the magnetic core, so the principle of magnetic focusing is to ensure that the U-shaped magnetic core can output more magnetic lines of force, and at the same time, the saturation magnetic induction intensity of the magnetic conductive material is higher than that of the U-shaped magnetic core, that is, it can reach a higher magnetic induction intensity under the same voltage, which ensures the focusing property and the stimulation intensity.

[0022] Compared with the prior art, the beneficial effects of the present application are:

[0023] 1. Magnetic field focusing property

[0024] By changing the shape of the magnetic field through the magnetic conductive material, more magnetic lines of force are gathered at the boundary of the magnetic core, and the magnetic field area is controlled by the heat dissipation hollow copper pipe, so that the magnetic field stimulation range is focused on the treatment area, effectively solving the problem of wide stimulation range and stimulation of non-treatment areas caused by the large cross-sectional area of the magnetic core in the prior art.

[0025] 2. Heat dissipation and impedance

[0026] The ingenious layout of the heat dissipation hollow pipe can be laid on the step between the upper coil and the lower coil of the coil, fully utilizing the contact area and greatly improving the heat dissipation efficiency; the heat dissipation hollow pipe has a certain control effect on the magnetic field around the coil under low frequency conditions, not only realizing magnetic field focusing, but also because it is not the main generator of the magnetic field, the inner diameter can be appropriately increased to improve the liquid cooling heat dissipation efficiency, and the overall impedance is further reduced.

[0027] 3. Treatment effect and comfort

[0028] While achieving magnetic field focusing, it can ensure the depth of magnetic stimulation, so that the treatment effect is not affected, meeting the needs of pelvic floor magnetic stimulation treatment for pelvic floor dysfunction; it avoids the needling pain caused by strong stimulation of non-treatment areas, allowing users to complete the treatment process normally and improving the comfort of treatment. Attached Figure Description

[0029] Figure 1 This is an overall view of a focusing magnetic core for pelvic floor magnetic stimulation according to the present invention.

[0030] Figure 2 This is a schematic diagram of the structure of a focusing magnetic core for pelvic floor magnetic stimulation according to the present invention.

[0031] Figure 3 This is a schematic diagram of the coil structure of a focusing magnetic core for pelvic floor magnetic stimulation according to the present invention;

[0032] Figure 4 This is a schematic diagram illustrating the assembly method of a focusing magnetic core for pelvic floor magnetic stimulation according to the present invention.

[0033] In the diagram: 1. Hollow copper tube for heat dissipation; 2. Coil; 3. Magnetic material; 4. U-shaped magnetic core. Detailed Implementation

[0034] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0035] Example: Figures 1-4 As shown, this utility model provides a technical solution: a focusing magnetic core for pelvic floor magnetic stimulation. (See reference...) Figure 1 and Figure 3 It is known that the product includes: a magnetic core, a coil 2 mounted on the magnetic core, and the coil 2 is a circular coil with a stepped structure and is wound in a mosquito coil-like manner.

[0036] Among them, coil 2 is divided into upper and lower layers, and the number of turns of the upper layer coil is not the same as that of the lower layer coil;

[0037] Among them, see Figures 1-2 It can be seen that the surfaces of the upper and lower coils of coil 2 are covered by the heat dissipation hollow copper tube 1;

[0038] Among them, see Figures 1-2 It can be seen that the center of coil 2 is embedded with magnetic material 3, and the inner diameter of coil 2 is larger than that of magnetic material 3;

[0039] Among them, see Figure 2 and Figure 4It can be seen that the magnetic core comprises two U-shaped magnetic cores 4 connected in series, the side of the first leg of one U-shaped magnetic core 4 is spliced with the side of the second leg of the other U-shaped magnetic core 4, the outer diameter of the coil 2 is greater than the section of the top of the two legs of the U-shaped magnetic cores 4 spliced together, and the coil 2 is installed on the section.

[0040] Finally, it should be noted that the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement for the technical solutions recorded in the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included within the scope of the present application.

Claims

1. A focused magnetic core for pelvic floor magnetic stimulation, comprising: The utility model relates to a magnetic core, coil (2) installed on the magnetic core, it is characterized in that, the coil (2) is the round coil that surrounds with mosquito-repellent style winding method and has ladder structure; The coil (2) is divided into two layers, and the number of turns of the upper coil and the number of turns of the lower coil are not uniform; The surface of the upper coil and the lower coil of the coil (2) is covered by the heat dissipation hollow copper pipe (1); The center of the coil (2) is embedded with the magnetic material (3), and the inner diameter of the coil (2) is greater than the magnetic material (3).

2. A focused magnetic core for pelvic floor magnetic stimulation according to claim 1, characterized in that, The magnetic core includes two series-connected U-shaped magnetic cores (4), one side of the first leg of one of the U-shaped magnetic cores (4) is spliced with the side of the second leg of the other U-shaped magnetic core (4), the outer diameter of the coil (2) is greater than the section of the top of the two legs spliced together, and the coil (2) is installed on the section.

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