Patent Application
20230248990
The present invention relates to the technical field of medical apparatus, especially a wire for transcranial magnetic stimulation, coil for transcranial magnetic stimulation and transcranial magnetic stimulation apparatus.
Transcranial magnetic stimulation is to generate pulse current by discharging a storage capacitor instantaneously into the stimulation coil, stimulate the stimulation coil to generate pulsed magnetic field, time-varying magnetic field induces electric field in the cortex, when the induction field exceeds the threshold of excitation of the brain nervous system, which resembles to excite the organism like electric stimulation, cortical stimulation effects can be reached.
Transcranial magnetic stimulation is primarily used in medical and scientific research areas, during treatment or researches, connect the stimulation coil with the transcranial magnetic stimulator, place the stimulation coil at the head of a patient with a central portion of the stimulation coil nestling on the part to be treated. During stimulation, the transcranial magnetic stimulation coil generates heat rapidly, a high quantity of heat is generated and conventional methods to cool down the transcranial magnetic stimulation coil comprise natural cooling, air cooling and liquid cooling.
Further, the liquid-cooling transcranial magnetic stimulation coil shall be connected with a liquid-cooling chassis for supplying circulating cooling liquid. Liquid-cooling transcanial magnetic cooling coils use primarily two cooling methods: the first one is to immerse the copper wire coil into circulating water and another is to reel the wire coil with a hollow copper duct with cooling liquid circulating in the copper duct. For the first method, a high requirement is given to waterproof performance of the casing, there is a high risk of liquid leakage, the wire coil is of a large volume and bulky and there is an electric conduction risk when the circulating liquid contacts directly the wire coil, and for the second method, there is a liquid leakage risk at where the wire coils of copper ducts are connected with the water ducts, it is difficult to reel the wire coil as the copper ducts are quite inflexible, and there is an electric conduction risk when the circulating liquid contacts directly the wire coil.
Therefore, it remains a problem in the field as to how to address the foregoing issues.
The present invention provides a transcranial magnetic stimulation coil, aiming to address the foregoing issues.
According to a first aspect of the present invention, an embodiment of the present invention provides a wire for transcranial magnetic stimulation, wherein the wire for transcranial magnetic stimulation is configured to fabricate a transcranial magnetic stimulation coil, comprising: an insulating tube, and a metal conduit or a multi-stranded wire sleeved over the insulating tube; the insulating tube is configured to be hollow, a hollow portion of the insulating tube is configured for allowing liquid or air to circulate and flow therein, and the metal conduit or the multi-stranded wire is configured to be energized and thus generate a magnetic field. In the wire for transcranial magnetic stimulation, a cross section of the insulating tube is any of square, circular or oval.
In the wire for transcranial magnetic stimulation, the insulating tube is made from flexible materials.
According to a second aspect of the present invention, an embodiment of the present invention provides a transcranial magnetic stimulation coil, comprising a wire coil reeled from the wire for transcranial magnetic stimulation as stipulated above and a casing; wherein a shape of the casing is adaptive to a shape of the wire coil, and is configured for installing the wire coil.
In the transcranial magnetic stimulation coil according to the present invention, a shape of the wire coil is any of circular, splayed, conical, dual-conical and splayed with an included angle that is not flat.
In the transcranial magnetic stimulation coil according to the present invention, the casing is made from insulating materials.
According to a third aspect of the present invention, an embodiment of the present invention provides a transcranial magnetic stimulator, comprising the transcranial magnetic coil.
The technical solutions provided in the embodiments of the present invention can have the following beneficial effects: in the present invention, a wire for transcranial magnetic stimulation, a transcranial magnetic stimulation coil and a transcranial magnetic stimulator are designed, by which cooling of stimulation coils can be done in the meanwhile the risk of electric conduction due to contact between the coil and the circulating cooling liquid is avoided.
To better illustrate the technical solutions in the embodiments of the present invention more clearly, drawings to be used in the description of the embodiments are briefly introduced herein, apparently, the drawings in the following description are only some embodiments of the present invention, for those of ordinary skill in the art, without paying creative effort, it is possible to obtain other drawings based on these drawings.
Markups in the drawings are:
100, transcranial magnetic stimulation coil; 10, insulation tube; and 20 metal conduit.
Hereinafter a clear and complete description will be given to the technical solutions of the present invention based on the drawings of the embodiments of the present invention, apparently the embodiments described here are only some of the embodiments of the present invention rather than all. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without paying creative effort fall into the protection scope of the present invention.
It shall be comprehensible that, terms used in the description of the present invention are only intended to describe the embodiment rather than limit the present invention. For example, unless clearly indicated otherwise, “a”, “an” and “the” in singular forms used in the specification and the appended claims intend to cover plural forms.
It shall be further understood that, the term “and/or” used in the specification and the appended claims refers to any combination and all possible combination of one or more of the listed items and include the combinations.
Please refer to
In the present embodiment, the metal conduit 20 is a single-stranded wire or a multi-stranded wire. For example, the metal conduit 20 can be an insulated metal braided conduit, bare metal braided conduit, multi-stranded insulated metal wire and multi-stranded bare metal wires. In some embodiments, when the metal conduit is a bare metal wire, an insulating layer can be encapsulated thereon.
In an optional embodiment, a cross section of the insulating tube 10 is any of rectangular, circular and oval. In the present embodiment, there is no limitation on a cross section shape of the insulation tube 10 for the purpose of entering circulating cooling liquid or circulating cooling air, the insulation tube 10 can also be configured to be other irregular shapes, as long as magnetic field can be generated when the wire is reeled to be the coil.
In an optional embodiment, the insulation tube 10 is made from flexible materials, and by making the wire with flexible materials, reeling difficulty of the coil is reduced and weight of the coil can be reduced.
Please refer to
In an optional embodiment, a shape of the wire coil is any of circular, splayed, conical, dual-conical and splayed shape with an included angle. To reel the wire coil into these shapes is to generate a magnetic field, apparently it is possible to configure the wire coil to be other shapes that can generate magnetic field. In the present embodiment, the casing is made from insulating materials, and by using the insulating materials the safety performance of the transcranial magnetic stimulation coil according to the present invention is higher.
The present invention further provides a transcranial magnetic stimulator, comprising the transcranial magnetic stimulation coil. The transcranial magnetic stimulator can realize stimulation coil cooling effects while avoid the risk of electric conduction when the wire coil contact the circulating cooling liquid (as the wire coil is reeled from a single wire, no coupling component is present, therefore, there is no risk of liquid leakage). A volume of the casing can be reduced significantly, and the insulating tube is flexible and light, in this way the reeling difficulty and the weight of the wire coil is greatly reduced.
The foregoing are only some specific embodiments of the present invention, however, the protection scope of the present invention is not restricted to these embodiments disclosed herein, a variety of equivalent replacement and modifications can be done by those skilled in the art within the scope disclosed in the present invention, and the equivalent replacement and modifications shall be covered in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be defined only by the protection scope of the claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202010890713.5 | Aug 2020 | CN | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2021/074748 | 2/2/2021 | WO |
