Solenoid electromagnetic pole assembly for creating a toroidal magnetic field on the surface of the cerebral cortex

Abstract

This invention relates to a spiral-ring coil electromagnetic pole accessory for forming a ring-shaped magnetic field on the surface of the cerebral cortex. It includes a ring-shaped magnetic conductor and a wire spirally wound around the ring-shaped magnetic conductor. The magnetization direction of the ring-shaped magnetic conductor is radial, and the hollow portion of the ring-shaped magnetic conductor is used to place the cerebral cortex where the neurons to be stimulated are located. Electrode connection structures are provided at both ends of the wire. This invention can improve therapeutic effects.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a spiral ring coil electromagnetic pole accessory for forming a ring magnetic field on the surface of the cerebral cortex. Background Technology

[0002] Clinical studies have shown that neurostimulation therapy has significant therapeutic effects on a variety of neurological disorders. Transcranial magnetic stimulation (TMS) is a common neurostimulation therapy that uses pulsed magnetic fields to induce electrical currents in the cerebral cortex. It is painless and non-invasive, and is suitable for treating mental and psychological disorders such as depression, anxiety, and schizophrenia, as well as improving cognitive and motor dysfunctions in the field of neurorehabilitation. However, current TMS devices are disc-shaped coils, which can only form a circular current in the cerebral cortex. This circular current does not conform to the morphology of neural electrical activity, thus the therapeutic effect is unsatisfactory. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a spiral ring coil electromagnetic pole accessory for forming a ring magnetic field on the surface of the cerebral cortex, so as to improve the therapeutic effect.

[0004] The technical solution adopted by the present invention to solve its technical problem is: to provide a spiral ring coil electromagnetic pole accessory for forming a ring magnetic field on the surface of the cerebral cortex, including a ring magnetic conductor and a wire spirally wound on the ring magnetic conductor, wherein the magnetization direction of the ring magnetic conductor is radial, and the hollow part of the ring magnetic conductor is used to place the cerebral cortex where the neuron to be stimulated is located; both ends of the wire are provided with electrode connection structures.

[0005] The annular magnetic conductor is either a circular annular magnetic conductor or an elliptical annular magnetic conductor.

[0006] The cross-section of the annular magnetic conductor is circular, rectangular, or elliptical.

[0007] The surface of the annular magnetic conductor is coated with ferromagnetic particles, and the surface of the ferromagnetic particles is coated with an electrically insulating layer.

[0008] The conductor is spirally wound around the entire annular magnetic conductor or around a portion of the annular magnetic conductor.

[0009] An insulating layer is provided on the surface of the conductor.

[0010] The technical solution adopted by the present invention to solve its technical problem is: a nerve stimulation device, including the above-mentioned spiral ring coil electromagnetic pole accessory for forming a ring magnetic field on the surface of the cerebral cortex, wherein the electrode connection structure is connected to the host, and the host integrates an electrical stimulator and a current detector.

[0011] Beneficial effects

[0012] By adopting the above-mentioned technical solution, the present invention has the following advantages and positive effects compared with the prior art: The present invention can generate a mutant ring magnetic field around the cerebral cortex of a specific brain region. This mutant ring magnetic field can stimulate the cerebral cortex of the specific brain region to generate a vertical longitudinal current confined within the cerebral cortex. Since this vertical longitudinal current is more in line with the morphology of neural electricity, its direction is more consistent with the direction of the axons and dendrites of neurons, which is in line with the natural morphology of neural electricity, thereby more effectively triggering the action potential of neurons and improving the therapeutic effect. Attached Figure Description

[0013] Figure 1 This is a top view of a spiral ring coil electromagnetic pole accessory for forming a ring magnetic field on the surface of the cerebral cortex according to an embodiment of the present invention.

[0014] Figure 2 This is a perspective view of a spiral ring coil electromagnetic pole accessory for forming a ring magnetic field on the surface of the cerebral cortex according to an embodiment of the present invention.

[0015] Figure 3 This is a diagram illustrating the usage state of the spiral ring coil electromagnetic pole accessory used to form a ring magnetic field on the surface of the cerebral cortex according to an embodiment of the present invention. Detailed Implementation

[0016] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0017] Embodiments of the present invention relate to a spiral ring coil electromagnetic pole accessory for forming a ring magnetic field on the surface of the cerebral cortex, such as... Figure 1 and Figure 2 As shown, it includes a ring-shaped magnetic conductor 1 and a wire 2 spirally wound on the ring-shaped magnetic conductor 1. The magnetization direction of the ring-shaped magnetic conductor 1 is radial. The hollow part of the ring-shaped magnetic conductor 1 is used to place the cerebral cortex where the neuron to be stimulated is located. Electrode connection structures are provided at both ends of the wire 2.

[0018] In this embodiment, the helical ring coil electromagnetic pole accessory is constructed by winding approximately 10 turns of wire around a radially magnetized ring-shaped magnetic conductor 1. The ring-shaped magnetic conductor 1 has an outer diameter of approximately 3 cm, an inner diameter of approximately 2.25 cm, and a height of approximately 0.5 cm. In this embodiment, the ring-shaped magnetic conductor 1 is a circular ring-shaped magnetic conductor with a rectangular cross-section. The surface of the ring-shaped magnetic conductor is coated with ferromagnetic particles, and the surface of these ferromagnetic particles is coated with an electrically insulating layer. This electrically insulating layer can be an electrically insulating organic compound. The ferromagnetic particles of this electrically insulating organic compound ensure electrical insulation, which allows the ring-shaped magnetic conductor to withstand thermal aging and provides high saturation magnetic flux density and low loss. The permeability of the ring-shaped magnetic conductor used in this embodiment is approximately 75 times that of air, which greatly increases the magnetic flux density of the coil. In this embodiment, an insulating layer is provided on the surface of the wire to provide additional protection and insulation.

[0019] It is worth mentioning that the annular magnetic conductor 1 in this embodiment can also be an elliptical annular magnetic conductor, and its cross-section can also be circular or elliptical. The wire 2 in this embodiment can also be wound only on a portion of the annular magnetic conductor 1. The wire 2 can be made of copper. In addition, other conductive materials that will not be attracted by magnets can also be used to make the wire 2.

[0020] This embodiment also relates to a neurostimulation device, including the aforementioned spiral-ring coil electromagnetic pole accessory for forming a ring-shaped magnetic field on the surface of the cerebral cortex. The electrode connection structure is connected to a main unit, which integrates an electrostimulator and a current detector. The electrostimulator generates pulsed currents in the wires, thereby changing the ring-shaped magnetic field of the ring-shaped magnetic conductor.

[0021] In this embodiment, due to the flexibility of the cerebral cortex, the spiral ring coil electromagnetic pole accessory is placed on the cerebral cortex where the neuron to be stimulated is located, and a downward force is applied to the ring magnetic pole accessory from above. At this time, as... Figure 3 As shown, a portion of the ring-shaped magnetic pole accessory A is embedded in the cerebral cortex. The cerebral cortex where the neuron to be stimulated is located will exhibit a protrusion B. This protrusion B enters the hollow portion of the ring-shaped magnetic conductor of the ring-shaped magnetic pole accessory A, where it can act as a conductor. When the electrical stimulator generates a pulsed current in the wire, the ring-shaped magnetic field of the ring-shaped magnetic conductor changes. Due to this change in the ring-shaped magnetic field, the protruding portion will generate a vertical longitudinal current confined within the cerebral cortex where the neuron to be stimulated is located. This vertical longitudinal current can stimulate the neuron.

[0022] Compared to the circular current generated by traditional disc coils, the vertical current generated in this embodiment is more consistent with the morphology of neural electricity. Its direction is more consistent with the orientation of the axons and dendrites of neurons, which conforms to the natural morphology of neural electricity, thereby more effectively triggering the action potential of neurons and improving the therapeutic effect.

[0023] In addition, this embodiment can stimulate specific areas of the cerebral cortex, which is more precise and can more effectively improve symptoms and enhance the treatment effect for patients. At the same time, the vertical current can reduce stimulation of surrounding non-target tissues, reduce the incidence of side effects, and improve patient tolerance and treatment compliance.

[0024] It is worth mentioning that the helical coil electromagnetic pole accessory of this embodiment, used to form a ring magnetic field on the surface of the cerebral cortex, can also detect vertical longitudinal currents within the cerebral cortex. When a vertical longitudinal current appears in the cerebral cortex within the hollow portion of the ring magnetic conductor, it alters the surrounding magnetic field. At this time, the magnetic field within the ring magnetic conductor undergoes a sudden change, and the wires wound around the ring magnetic conductor generate a current. This current can be detected by a current detector integrated within the main unit. Therefore, when the current detector detects a current, it indicates the presence of a vertical longitudinal current within the cerebral cortex.

Claims

1. A spiral ring coil electromagnetic pole accessory for forming a ring magnetic field on the surface of the cerebral cortex, characterized in that, It includes a ring-shaped magnetic conductor and a wire spirally wound on the ring-shaped magnetic conductor. The magnetization direction of the ring-shaped magnetic conductor is radial. The hollow part of the ring-shaped magnetic conductor is used to place the cerebral cortex where the neuron to be stimulated is located. Electrode connection structures are provided at both ends of the wire.

2. The electromagnetic pole fitting for forming a ring-shaped magnetic field on the surface of the cerebral cortex according to claim 1, characterized in that, The annular magnetic conductor is either a circular annular magnetic conductor or an elliptical annular magnetic conductor.

3. The spiral ring coil electromagnetic pole accessory for forming a ring magnetic field on the surface of the cerebral cortex according to claim 1, characterized in that, The cross-section of the annular magnetic conductor is circular, rectangular, or elliptical.

4. The electromagnetic pole fitting for forming a ring-shaped magnetic field on the surface of the cerebral cortex according to claim 1, characterized in that, The surface of the annular magnetic conductor is coated with ferromagnetic particles, and the surface of the ferromagnetic particles is coated with an electrically insulating layer.

5. The electromagnetic pole fitting for forming a ring-shaped magnetic field on the surface of the cerebral cortex according to claim 1, characterized in that, The conductor is spirally wound around the entire annular magnetic conductor or around a portion of the annular magnetic conductor.

6. The electromagnetic pole fitting for forming a ring-shaped magnetic field on the surface of the cerebral cortex according to claim 1, characterized in that, An insulating layer is provided on the surface of the conductor.

7. A nerve stimulation device, characterized in that, Includes a spiral ring coil electromagnetic pole accessory for forming a ring magnetic field on the surface of the cerebral cortex as described in any one of claims 1-6, wherein the electrode connection structure is connected to the host, and the host integrates an electrical stimulator and a current detector.

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