Internal-cooling transcranial magnetic coil

Abstract

The utility model relates to an internal-cooling transcranial magnetic coil which comprises a coil body, a power connection part and a connecting pipe, the coil body is of a surrounding annular structure, the interior of the coil body is hollow, a penetrating heat dissipation channel is formed in the surrounding direction of the coil body, the power connection part is arranged outside the coil body and connected with the exterior of the coil body, and a water through hole is formed in the power connection part and communicates with the heat dissipation channel; the connecting pipe is connected with the inner rings of the two coils, the connecting pipe is of a tubular structure with the hollow interior and the two open ends, the two ends of the connecting pipe communicate with the heat dissipation channels of the two coils correspondingly, the heat dissipation channels are formed in the surrounding direction of the coils, cooling liquid is injected into the heat dissipation channels of the coils, and therefore heat dissipation can be conducted on the coils; the heat dissipation channel is formed along the interior of the coil, so that heat dissipation can be performed on all parts of the coil, the heat dissipation efficiency of the coil is improved, the preset distance is formed between the heat dissipation channel and the bottom of the coil, the coil conductive body is located on the lower portion and is close to a to-be-stimulated target, and higher magnetic field utilization efficiency is achieved.

Description

Technical Field

[0001] The present application relates to the field of medical devices, and in particular to an internally cooled transcranial magnetic coil. Background Art

[0002] Transcranial Magnetic Stimulation (TMS) is a non-invasive biostimulation technology. During treatment or research, a stimulation coil is placed on the patient's head with the center aligned with the treatment site. High-voltage pulses are applied to the coil to generate a magnetic field. The magnetic field passes through the skin and skull, generating an induced current in the brain's neural tissue, changing the threshold and membrane potential of intracranial nerve cells, thereby regulating neural metabolism and electrophysiological activities.

[0003] Due to the existence of the internal resistance of the transcranial magnetic stimulation coil, a large current flowing through the stimulation coil will generate a large amount of heat. As the current continues to flow through the coil, the coil temperature will continue to rise with the stimulation time and intensity. Frequent heating of the coil will reduce the service life of the coil and may even burn the human body. Therefore, it is usually necessary to cool the stimulation coil to ensure the safety and reliability of the treatment of the human body. In the prior art, the heat dissipation methods for the magnetic stimulator coil include fan cooling, natural cooling and coolant cooling. However, the efficiency of natural cooling is low, and it is difficult to ensure that the temperature of the stimulation coil is stable within an appropriate range. Air cooling usually involves setting a cooling fan facing the stimulation coil. The cooling fan is driven by a motor. The motor is in the center of the stimulation coil, which will affect the output magnetic field of the stimulation coil, affecting the depth and accuracy of the stimulation. In addition, air cooling uses air for heat conduction, and the heat dissipation efficiency is also low. Most of the existing liquid cooling device structures have unreasonable places, and it is difficult to ensure the stability of the water temperature. In addition, the design of the coolant flow structure is complex, which increases the thickness of the coil shell and weakens the magnetic stimulation effect. This in turn affects the cooling effect of the stimulation coil. Therefore, how to improve the cooling efficiency of the coil while ensuring the magnetic stimulation effect is a problem that needs to be solved urgently. Utility Model Content

[0004] In view of this, the present application proposes an internally cooled transcranial magnetic coil to improve the heat dissipation effect of the coil.

[0005] According to one aspect of the present application, there is provided an internally cooled transcranial magnetic coil, comprising: a coil, an electrical connection portion and a connecting tube;

[0006] The coil is an enclosed annular structure, and the interior of the coil is hollow, and a penetrating heat dissipation channel is opened along the enclosed direction of the coil;

[0007] The power connection part is arranged outside the coil and connected to the outside of the coil, and the power connection part is provided with a water hole, and the water hole is communicated with the heat dissipation channel;

[0008] There are two coils, and the connecting pipe is connected to the inner circles of the two coils. The connecting pipe is a tubular structure with a hollow interior and open ends, and the two ends are respectively connected to the heat dissipation channels of the two coils.

[0009] In a possible implementation manner, the two coils are of an asymmetric structure.

[0010] In a possible implementation manner, the heat dissipation channel is spaced a preset distance from the bottom of the coil.

[0011] In a possible implementation, the cross-section of the heat dissipation channel is square.

[0012] In a possible implementation, the cross-section of the heat dissipation channel is a rectangular structure, and the long side of the heat dissipation channel is parallel to the top to the bottom of the coil.

[0013] In a possible implementation, the ratio of the length of the long side of the cross-section of the heat dissipation channel to the preset distance between the heat dissipation channel and the bottom of the coil is in the range of [1-1.2].

[0014] In a possible implementation, the coil includes an upper coil and a lower coil, and the power connection portion includes an upper power connection portion and a lower power connection portion;

[0015] The water inlet end of the upper coil is connected to the upper electrical connection part;

[0016] The water outlet end of the lower coil is connected to the lower power connection part; and

[0017] The length of the internal water passage of the upper power connection part is greater than the length of the internal water passage of the lower power connection part.

[0018] In a possible implementation, the length of the heat dissipation channel of the upper coil is greater than the length of the heat dissipation channel of the lower coil.

[0019] In a possible implementation manner, the connecting tube is located above the two coils.

[0020] In a possible implementation, the coil, the power connection portion and the connecting pipe are integrally formed.

[0021] The beneficial effects of the internally cooled transcranial magnetic coil of the embodiment of the present application are as follows: a heat dissipation channel is provided along the encircling direction of the coil, and cooling liquid is injected into the heat dissipation channel of the coil to dissipate heat for the coil, and since the heat dissipation channel is provided along the inside of the coil, heat can be dissipated for the entire part of the coil, thereby improving the heat dissipation efficiency of the coil. In addition, since the heat dissipation channel is spaced a preset distance from the bottom of the coil, the conductive body of the coil is at the bottom, close to the target to be stimulated, and has a higher magnetic field utilization efficiency.

[0022] Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the present application and, together with the description, serve to explain the principles of the present application.

[0024] Figure 1 A schematic cross-sectional view of the main body of the internally cooled transcranial magnetic coil according to an embodiment of the present application is shown;

[0025] Figure 2 A schematic cross-sectional view of an internally cooled transcranial magnetic coil according to an embodiment of the present application is shown;

[0026] Figure 3 A schematic diagram of the main structure of the internally cooled transcranial magnetic coil according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0027] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0028] Among them, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model or simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0031] In addition, in order to better illustrate the present application, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0032] See also Figure 1 , Figure 2 and Figure 3 The internally cooled transcranial magnetic coil of the embodiment of the present application includes: a coil 100, a power connection part 200 and a connecting tube 30. The coil 100 is an enclosed annular structure, and the interior of the coil 100 is hollow. A penetrating heat dissipation channel is opened along the enclosing direction of the coil 100. The power connection part 200 is arranged on the outside of the coil 100 and connected to the outside of the coil 100. The power connection part 200 is opened with a water hole, and the water hole is connected to the heat dissipation channel. There are two coils 100, and the connecting tube 30 is connected to the inner circles of the two coils 100. The connecting tube 30 is a tubular structure with a hollow interior and openings at both ends, and the two ends are respectively connected to the heat dissipation channels of the two coils 100.

[0033] In this embodiment, a heat dissipation channel is provided along the encircling direction of the coil 100, and cooling liquid is injected into the heat dissipation channel of the coil 100 to dissipate heat for the coil 100. Moreover, since the heat dissipation channel is provided along the inside of the coil 100, heat can be dissipated for the entire part of the coil 100, thereby improving the heat dissipation efficiency of the coil 100. In addition, since the heat dissipation channel is spaced a preset distance from the bottom of the coil 100, the conductive body of the coil 100 is at the bottom, close to the target to be stimulated, and has a higher magnetic field utilization efficiency.

[0034] In a specific embodiment, the coil 100 includes an upper coil 12 and a lower coil 11, and the power connection part 200 includes an upper power connection part 22 and a lower power connection part 21, the upper coil 12 is connected to the upper power connection part 22, and the lower coil 11 is connected to the lower power connection part 21, and the overall structure of the upper coil 12 and the upper power connection part 22 is different from the overall structure of the lower coil 11 and the lower power connection part 21.

[0035] In this embodiment, the internally cooled transcranial magnetic coil 100 has an asymmetric structure, which can improve the overall heat dissipation effect.

[0036] In this embodiment, the water inlet end of the upper coil 12 is connected to the upper power connection part 22, the water outlet end of the lower coil 11 is connected to the lower power connection part 21, and the length of the internal water passage of the upper power connection part 22 is greater than the length of the internal water passage of the lower power connection part 21.

[0037] In this embodiment, the length of the heat dissipation channel of the upper coil 12 is greater than the length of the heat dissipation channel of the lower coil 11 .

[0038] In a specific embodiment, the heat dissipation channel is spaced apart from the bottom of the coil 100 by a preset distance, so that the lower portion of the coil 100 is closer to the target to be stimulated, thereby improving the overall magnetic field utilization efficiency.

[0039] In a specific embodiment, the cross-section of the heat dissipation channel is square, so that the side length of the cross-section of the heat dissipation channel is larger, thereby improving the heat dissipation efficiency.

[0040] In another specific embodiment, the cross-section of the heat dissipation channel is a rectangular structure, and the long side of the heat dissipation channel is parallel to the top to the bottom of the coil 100, further increasing the side length of the cross-section of the heat dissipation channel.

[0041] In this embodiment, the ratio of the length of the long side of the cross section of the heat dissipation channel to the preset distance between the heat dissipation channel and the bottom of the coil 100 is in the range of [1-1.2].

[0042] In a specific embodiment, the connecting tube 30 is located above the two coils 100 and does not affect the lower portion of the coils 100 which is a conductive area.

[0043] In a specific embodiment, the coil 100 , the power connection portion 200 and the connecting pipe 30 are integrally formed, which has extremely high processing consistency and dimensional stability.

[0044] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. An internally cooled transcranial magnetic coil, characterized in that: include: Coil, electrical connection and connecting pipe; The coil is an enclosed annular structure, and the interior of the coil is hollow, and a penetrating heat dissipation channel is opened along the enclosed direction of the coil; The power connection part is arranged outside the coil and connected to the outside of the coil, and the power connection part is provided with a water hole, and the water hole is communicated with the heat dissipation channel; There are two coils, and the connecting tube is connected to the inner circles of the two coils. The connecting tube is a tubular structure with a hollow interior and open ends, and the two ends are respectively connected to the heat dissipation channels of the two coils.

2. The internally cooled transcranial magnetic coil according to claim 1, characterized in that: The two coils are of asymmetrical structure.

3. The internally cooled transcranial magnetic coil according to claim 1, characterized in that: The heat dissipation channel is spaced a preset distance from the bottom of the coil.

4. The internally cooled transcranial magnetic coil according to claim 3, characterized in that: The cross section of the heat dissipation channel is square.

5. The internally cooled transcranial magnetic coil according to claim 3, characterized in that: The cross section of the heat dissipation channel is a rectangular structure, and the long side of the heat dissipation channel is parallel to the top to the bottom of the coil.

6. The internally cooled transcranial magnetic coil according to claim 5, characterized in that: The ratio of the length of the long side of the cross section of the heat dissipation channel to the preset distance between the heat dissipation channel and the bottom of the coil is in the range of [1-1.2].

7. The internally cooled transcranial magnetic coil according to claim 2, characterized in that: The coil comprises an upper coil and a lower coil, and the power connection portion comprises an upper power connection portion and a lower power connection portion; The water inlet end of the upper coil is connected to the upper electrical connection part; The water outlet end of the lower coil is connected to the lower power connection part; and The length of the internal water passage of the upper power connection part is greater than the length of the internal water passage of the lower power connection part.

8. The internally cooled transcranial magnetic coil according to claim 7, characterized in that: The heat dissipation channel length of the upper coil is greater than the heat dissipation channel length of the lower coil.

9. The internally cooled transcranial magnetic coil according to claim 1, characterized in that: The connecting pipe is located above the two coils.

10. The internally cooled transcranial magnetic coil according to claim 1, characterized in that: The coil, the power connection portion and the connecting pipe are integrally formed.

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