Optical coupling assembly for near-infrared brain function imaging device, near-infrared brain function imaging device and fNIRS and TMS combined system

Abstract

The utility model provides an optical coupling assembly for a near-infrared brain function imaging device, the near-infrared brain function imaging device and an fNIRS and TMS combined system. The optical coupling assembly comprises a light source assembly, an adaptive assembly and a coupling box. The light source assembly comprises a plate body and a luminous body. A mounting cavity is formed in the adapter assembly, the light source assembly is mounted in the mounting cavity, the luminous body emits near-infrared light towards a lower opening of the mounting cavity, a first limiting structure is arranged on the mounting cavity, the first limiting structure abuts against the plate body, a light outlet channel is formed between the lower opening of the mounting cavity and the luminous body, and the optical fiber part is contained in the light outlet channel. The coupling box is provided with an adaptive assembly, and the lower opening of the installation cavity extends into the coupling box. According to the structure, the plate body of the light source assembly is effectively limited through the first limiting structure, accurate installation of the light source assembly is achieved, near-infrared light emitted by the light emitting body is directly transmitted to the optical fiber piece, the problem that light intensity attenuation is serious due to the fact that a light guide structure is arranged at present is solved, and the accuracy of a detection result is improved.

Description

Technical Field

[0001] This application relates to the field of near-infrared brain functional imaging technology, and in particular to an optical coupling component for a near-infrared brain functional imaging device, a near-infrared brain functional imaging device, and a system for combining fNIRS and TMS. Background Technology

[0002] Functional near-infrared spectroscopy (fNIRS) is a mature non-destructive testing technique that monitors brain activity by detecting near-infrared light absorbed by oxyhemoglobin (HbO2) and deoxyhemoglobin (HHb). However, current fNIRS devices often employ integrated electronic circuits in their light sources, making them susceptible to interference from strong magnetic fields. This presents a technical hurdle when combining fNIRS with magnetic field-based brain imaging techniques (such as functional magnetic resonance imaging and magnetoencephalography) or brain therapy techniques (such as transcranial magnetic stimulation). A conversion is needed to transform the transmission method of the near-infrared light emitted by the fNIRS light source, transmitting it through a longer optical fiber to the subject's head. Currently, a light guide is placed between the light source and the optical fiber. After coupling between the light source and the light guide, the light is then coupled to the longer optical fiber, thus transmitting the light to the subject's scalp. However, the light source probe assembly guides light between the light source and the optical fiber through a light guide component, which not only increases the installation difficulty of the light source and the light guide component, but also may result in poor coupling effect after multiple couplings, leading to severe light intensity attenuation and making it impossible to achieve effective detection. Utility Model Content

[0003] This application provides an optical coupling component for a near-infrared brain functional imaging device, a near-infrared brain functional imaging device, and a system for combining fNIRS and TMS, to solve the problems in the prior art where the light source component is difficult to install accurately, the light source and optical fiber need to be coupled multiple times, resulting in increased installation difficulty, poor coupling effect, and severe light intensity attenuation, thus making it impossible to achieve effective detection.

[0004] This application provides an optical coupling assembly for a near-infrared brain functional imaging device. The optical coupling assembly includes a light source assembly, an adapter assembly, and a coupling box. The light source assembly includes a plate and a light emitter disposed on the plate. The adapter assembly has a vertically penetrating mounting cavity. The light source assembly is inserted into the mounting cavity through its upper opening. The light emitter emits near-infrared light towards the lower opening of the mounting cavity. A first limiting structure is provided on the cavity wall of the mounting cavity, which abuts against the plate. A light emission channel is formed between the lower opening of the mounting cavity and the light emitter, and this light emission channel is used to accommodate an optical fiber component for transmitting the near-infrared light emitted by the light emitter. The coupling box is used to mount the adapter assembly, and the lower opening of the mounting cavity extends into the coupling box.

[0005] In some embodiments, the side of the plate is provided with a protrusion, and the cavity wall of the mounting cavity is formed with a limiting groove adapted to the protrusion to limit the placement position of the plate.

[0006] In some embodiments, the adapter component has a second limiting structure on the portion of the light-emitting side of the light-emitting body. The second limiting structure is used to limit the installation position of the optical fiber component, so that the light-receiving end of the optical fiber component is close to the light-emitting body.

[0007] In some embodiments, the adapter component has at least one connection hole for mounting a fastener so that the adapter component can be detachably mounted on the coupling box.

[0008] In some embodiments, the coupling box is provided with several mounting holes for passing through the fasteners, and the light source assembly further includes a cable connected to the plate. The mounting holes are configured such that the cables of the multiple light source assemblies are all gathered in the same direction.

[0009] In some embodiments, the optical coupling assembly further includes a cover attached to the coupling box, the adapter assembly being located inside the coupling box and the cover, and one side of the cover having an outlet for the cable of the light source assembly to pass through.

[0010] In some embodiments, there are multiple first limiting structures, which are arranged around the light-emitting body to cooperate in abutting against the plate.

[0011] In some embodiments, a stepped portion corresponding to the light-emitting element is formed on the cavity wall of the mounting cavity. The stepped portion has a stepped surface located below the light-emitting element, and the distance between the stepped surface and the lower surface of the light-emitting element is a first preset range.

[0012] This application also provides a near-infrared brain functional imaging device, including an optical coupling assembly for near-infrared brain functional imaging devices as described in any of the above embodiments, as well as a main unit and a headgear. The plate of the light source assembly is connected to the main unit via a connecting cable. The headgear is equipped with a transmitting probe and a receiving probe connected to the main unit. The transmitting probe is connected to an optical fiber extending through the coupling box, and the receiving probe is used to receive near-infrared light emitted from the head to obtain a near-infrared light signal, and transmit the obtained near-infrared light signal to the main unit.

[0013] This application also provides a system for combining fNIRS and TMS, the system including the above-mentioned near-infrared brain functional imaging device and a TMS device.

[0014] Compared with the prior art, the beneficial effects of the embodiments of this application are as follows: This application can effectively limit the installation position of the plate in the installation cavity by abutting the first limiting structure on the cavity wall of the installation cavity with the plate, thereby achieving precise installation of the light source component. This ensures that the light-emitting body on the plate is kept in a suitable installation position. The light-emitting body has a high temperature after operation, and keeping it stable in a suitable installation position can help extend the service life of the light-emitting body and avoid the problem of the light-emitting body being damaged due to shaking and getting too close to the surrounding structure. Furthermore, the near-infrared light emitted by the light-emitting body is directly transmitted to the optical fiber component. No light guide structure is set between the light-emitting body and the optical fiber component, which greatly reduces the problems of poor coupling effect and severe light intensity attenuation caused by setting a light guide structure. This effectively improves the accuracy of the detection results and simplifies the installation process of the optical coupling component, increasing the ease of installation. Attached Figure Description

[0015] In drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The drawings generally illustrate various embodiments by way of example rather than limitation and are used, together with the description and claims, to illustrate the disclosed embodiments. Where appropriate, the same reference numerals are used in all drawings to refer to the same or similar parts. Such embodiments are illustrative and not intended to be exhaustive or exclusive embodiments of the apparatus or method.

[0016] Figure 1 This is a schematic diagram of the adapter component and light source component structure of the optical coupling component in an embodiment of this application;

[0017] Figure 2 This is an exploded view of the optical coupling component according to an embodiment of this application;

[0018] Figure 3 This is a cross-sectional view of the light source component and adapter component of the optical coupling assembly according to an embodiment of this application;

[0019] Figure 4 This is a schematic diagram of the structure of the adapter component of the optical coupling component in the embodiments of this application;

[0020] Figure 5 This is a schematic diagram of the light source assembly of the optical coupling component in an embodiment of this application;

[0021] Figure 6 This is a schematic diagram of the structure of the adapter component and the light source component of the optical coupling component in an embodiment of this application, mounted on the coupling box;

[0022] Figure 7 This is a schematic diagram of the coupling box and cover of the optical coupling component according to an embodiment of this application;

[0023] Figure 8 This is a cross-sectional view of the optical coupling component according to an embodiment of this application;

[0024] Figure 9 This is a schematic diagram of the near-infrared brain functional imaging device according to an embodiment of this application.

[0025] The components indicated by the reference numerals in the figure:

[0026] 100. Optical coupling assembly; 200. Main unit; 300. Head cap; 301. Transmitting probe; 302. Receiving probe; 1. Light source assembly; 11. Plate; 12. Light emitter; 13. Protrusion; 14. Cable; 2. Adapter assembly; 21. Mounting cavity; 22. First limiting structure; 23. Limiting groove; 24. Second limiting structure; 25. Connecting hole; 26. Stepped part; 27. Adapter cover; 28. Accommodating groove; 3. Coupling box; 31. Fiber optic outlet; 32. Handle; 4. Fiber optic component; 5. Cover; 51. Cable outlet. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solutions of this application, the application will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiments of this application will be further described in detail below with reference to the accompanying drawings and specific examples, but these are not intended to limit the scope of this application.

[0028] The terms "first," "second," and similar words used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "contains" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as "above," "below," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, this relative positional relationship may also change accordingly.

[0029] In this application, when a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without an intermediary device, or it may not be directly connected to the other devices but may have an intermediary device.

[0030] All terms used in this application (including technical or scientific terms) have the same meaning as understood by one of ordinary skill in the art to which this application pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and not as having an idealized or highly formalized meaning, unless expressly defined herein.

[0031] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0032] This application provides an optical coupling component 100 for a near-infrared brain functional imaging device. For example... Figures 1 to 6 As shown, the optical coupling assembly 100 includes a light source assembly 1, an adapter assembly 2, and a coupling box 3. The light source assembly 1 includes a plate 11 and a light emitter 12 disposed on the plate 11. The adapter assembly 2 has a vertically penetrating mounting cavity 21. The light source assembly 1 is inserted into the mounting cavity 21 through its upper opening. The light emitter 12 emits near-infrared light towards the lower opening of the mounting cavity 21. A first limiting structure 22 is provided on the cavity wall of the mounting cavity 21, which abuts against the plate 11. A light emission channel is formed between the lower opening of the mounting cavity 21 and the light emitter 12, which accommodates an optical fiber component 4. The optical fiber component 4 transmits the near-infrared light emitted by the light emitter 12. The coupling box 3 is used to mount the adapter assembly 2, and the lower opening of the mounting cavity 21 extends into the coupling box 3.

[0033] The aforementioned plate 11 can be a circuit board, and the light-emitting element 12 is mounted on the plate 11 and electrically connected to the plate 11 so that the light-emitting element 12 is powered through the plate 11, enabling the light-emitting element 12 to emit near-infrared light. Specifically, the light-emitting element 12 can be an optical component capable of emitting light, such as an LED lamp or a laser.

[0034] The number of light source components 1 and the number of light emitters 12 on each plate 11 can be determined according to the needs of the operator, the requirements of near-infrared brain functional imaging detection, etc. For example, the number of light emitters 12 on the plate 11 can be 1, 2 or 3, etc.

[0035] Apart from gaseous media such as air, no light-guiding structure is provided between the light-receiving end of the aforementioned optical fiber component 4 and the light-emitting side of the light-emitting body 12. That is, the near-infrared light emitted by the light-emitting body 12 is directly transmitted to the optical fiber component 4, so as to avoid the problems of poor coupling effect and severe light intensity attenuation caused by setting a light-guiding structure, and further improve the accuracy of the detection results.

[0036] Because the light emitter 12 operates at a high temperature, a gap is maintained between the receiving end of the optical fiber 4 and the emitting side of the light emitter 12 to prevent direct contact between the light emitter 12 and the optical fiber 4, which could affect the heat dissipation of the light emitter 12 and reduce its lifespan. It should be noted that the gap between the receiving end of the optical fiber 4 and the emitting side of the light emitter 12 should not be too large to avoid affecting the optical transmission efficiency between the optical fiber 4 and the light emitter 12.

[0037] like Figure 1 and Figure 2 As shown, after the light source assembly 1 is installed into the mounting cavity 21 through the upper opening of the mounting cavity 21, it can be fastened to the upper opening of the mounting cavity 21 by the adapter cover 27 to ensure that the light source assembly 1 can be stably installed in the mounting cavity 21.

[0038] The aforementioned first limiting structure 22 can support the plate 11 by abutting against it. Specifically, there can be several first limiting structures 22, and several first limiting structures 22 can work together to stably support the plate 11.

[0039] The first limiting structure 22 can abut against the side of the plate 11 where the light-emitting body 12 is provided. The position of the first limiting structure 22 is offset from the position of the light-emitting body 12, and a certain gap can be formed between the first limiting structure 22 and the light-emitting body 12 to facilitate the dissipation of heat generated by the light-emitting body 12 during operation and to avoid contact that could damage the light-emitting body 12 and affect its operation.

[0040] The coupling box 3 may be provided with multiple through slots for mounting the adapter components 2. The lower opening of the mounting cavity 21 extends into the coupling box 3 through the through slots, so that the light output channel can be located inside the coupling box 3, avoiding the influence of ambient light. There may be multiple adapter components 2, and the through slots on the coupling box 3 are set one-to-one with the adapter components 2.

[0041] The coupling box 3 may be provided with an optical fiber outlet 31. The receiving end of the optical fiber component 4 is located inside the coupling box 3, and the emitting end of the optical fiber component 4 exits the coupling box 3 through the optical fiber outlet 31. There may be one or more optical fiber outlets 31. This application does not make a specific limitation on this. The optical fiber outlets 31 can be arranged according to the needs of the application scenario of the near-infrared brain functional imaging device.

[0042] This application achieves effective limitation of the installation position of the plate 11 within the installation cavity 21 by using the first limiting structure 22 on the cavity wall of the installation cavity 21 to abut against the plate 11, thus enabling precise installation of the light source assembly 1. This ensures that the light-emitting element 12 on the plate 11 can be kept in a suitable installation position. Since the light-emitting element 12 has a high temperature after operation, keeping it stable in a suitable installation position can help extend its service life and prevent damage caused by the light-emitting element 12 shaking and getting too close to the surrounding structure. Furthermore, the near-infrared light emitted by the light-emitting element 12 is directly transmitted to the optical fiber component 4. No light guide structure is set between the light-emitting element 12 and the optical fiber component 4, which greatly reduces the problems of poor coupling effect and severe light intensity attenuation caused by setting a light guide structure, effectively improving the accuracy of the detection results and simplifying the installation process of the optical coupling assembly 100, increasing the ease of installation.

[0043] In some embodiments, such as Figures 2 to 5 As shown, the side of the plate 11 is provided with a protrusion 13, and the cavity wall of the mounting cavity 21 is formed with a limiting groove 23 that matches the protrusion 13, so as to limit the placement position of the plate 11.

[0044] In this way, the protrusion 13 on the side of the plate 11 can further limit the placement position of the plate 11 in the mounting cavity 21, increasing the installation stability and accuracy of the plate 11. When the protrusion 13 is inserted into the limiting groove 23, the plate 11 can be accurately installed, preventing the plate 11 from rotating on the first limiting structure 22.

[0045] The protrusion 13 can be detachably connected to the plate 11 or integrally formed with the plate 11. This application does not make specific limitations on this, as long as the protrusion 13 can be stably connected to the plate 11.

[0046] The aforementioned protrusion 13 can be one or more, depending on the specific configuration. Figure 2 , Figure 2 The protrusion 13 shown is only an example. When there is one limiting groove 23 and multiple protrusions 13, the outer edge shape formed by the multiple protrusions 13 needs to match the shape of the limiting groove 23. The precise positioning of the plate 11 is achieved through the cooperation of the multiple protrusions 13 and the limiting groove 23. It can be understood that when there are multiple limiting grooves 23, protrusions 13 are provided at positions on the plate 11 corresponding to each limiting groove 23. The precise positioning of the plate 11 is achieved through the cooperation of the protrusions 13 and the limiting groove 23.

[0047] like Figure 4 As shown, the aforementioned limiting groove 23 and the first limiting structure 22 can be arranged close to each other to facilitate the processing and manufacturing of the adapter component 2.

[0048] In some embodiments, such as Figure 2 As shown, the adapter component 2 is provided with a second limiting structure 24 on the light-emitting side of the light-emitting body 12. The second limiting structure 24 is used to limit the installation position of the optical fiber component 4, so that the light-receiving end of the optical fiber component 4 is close to the light-emitting body 12.

[0049] In this way, the installation position of the optical fiber component 4 can be effectively limited by the second limiting structure 24, so that the light receiving end of the optical fiber component 4 can be kept at a suitable distance from the light emitter 12. This can not only ensure the light transmission efficiency of the optical fiber component 4 and the light emitter 12, but also avoid the problem of the optical fiber component 4 being too close to the light emitter 12, which would affect the heat dissipation of the light emitter 12, or even the problem of the optical fiber component 4 exerting force on the light emitter 12, thus affecting the lifespan of the light emitter 12.

[0050] The fact that the light-receiving end of the optical fiber component 4 is close to the light-emitting body 12 can be understood as meaning that the optical fiber component 4 does not directly contact the light-emitting body 12, while there is a certain gap between the optical fiber component 4 and the light-emitting body 12.

[0051] The aforementioned optical fiber component 4 can be mounted on the adapter component 2 via an installation structure, allowing the optical fiber component 4 to approach the light-emitting element 12 through the lower opening of the mounting cavity 21. The installation structure is detachably connected to the adapter component 2, specifically by means of snap-fit ​​connection, threaded connection, plug-in connection, etc.

[0052] For example, the above-mentioned mounting structure may have an internal thread, the adapter component 2 may have an external thread that matches the internal thread, and the mounting structure may be sleeved on the adapter component 2 for a spiral connection.

[0053] Alternatively, the aforementioned optical fiber component 4 can be directly connected to the adapter component 2 without being mounted on the adapter component 2 via an installation structure. In this case, the second limiting structure 24 can be formed on the cavity wall of the mounting cavity 21 to limit the position of the optical fiber component 4 extending into the mounting cavity 21. For example, the second limiting structure 24 is a tapered structure formed on the cavity wall of the mounting cavity 21. By continuously squeezing the optical fiber component 4 through the tapered structure, the position of the optical fiber component 4 is limited.

[0054] In some embodiments, such as Figure 2 and Figure 4 As shown, the adapter component 2 has at least one connection hole 25, which is used to install fasteners so that the adapter component 2 can be detachably installed on the coupling box 3. The method of having fasteners pass through the connection hole 25 allows the adapter component 2 to be installed more stably on the coupling box 3. Compared to simply plugging the adapter component 2 into the coupling box 3, this improves the installation stability and accuracy of the adapter component 2 and avoids the problem of the adapter component 2 easily loosening under stress.

[0055] The fasteners mentioned above may be threaded components, which are threaded to connect with the adapter component 2, thereby enabling stable installation of the adapter component 2.

[0056] There may be multiple connecting holes 25, and these multiple connecting holes 25 can be arranged around the adapter component 2. For example, as shown... Figure 4 As shown, there are two connection holes 25, which are symmetrically arranged on both sides of the adapter component 2. Understandably, there could also be three, four, or other connection holes 25, which is not specifically limited here.

[0057] The aforementioned adapter component 2 can extend outward to form a connecting part, and the connecting hole 25 can be located on the connecting part. The connecting part can be provided in a one-to-one correspondence with the connecting hole 25.

[0058] In some embodiments, such as Figure 6 As shown, the coupling box 3 is provided with several mounting holes for fasteners to pass through. The light source assembly 1 also includes a cable 14 connected to the plate 11. The mounting holes are configured such that the cables 14 of multiple light source assemblies 1 are all gathered in the same direction.

[0059] In this way, the placement of several mounting holes can improve the ease of organizing the cables 14 of multiple light source components 1. Especially for scenarios with a large number of light source components 1, the cables 14 can be well organized, preventing them from bending or being damaged during the testing process, which would affect the accuracy of the test results.

[0060] For example, such as Figure 6 As shown, the coupling box 3 has four rows and six columns of through slots. Each through slot is equipped with an adapter component 2 and a light source component 1. Each through slot is surrounded by mounting holes for fasteners. The arrangement of the mounting holes around the three columns of through slots on the left allows the cables 14 of the light source component 1 to converge towards the center of one side of the coupling box 3 after installation. The arrangement of the mounting holes around the three columns of through slots on the right also allows the cables 14 of the light source component 1 to converge towards the center of one side of the coupling box 3 after installation, thus enabling the cables 14 of the light source component 1 to be gathered together for easy cable management. However, in actual use, it is not necessary for each through slot of the coupling box 3 to be equipped with both the adapter component 2 and the light source component 1; the number of adapter components 2 and light source components 1 can be adjusted according to actual usage requirements.

[0061] The aforementioned mounting holes can be evenly arranged around the through slot on the coupling box 3. One, two, or three mounting holes can be arranged around the through slot on the coupling box 3 to improve the connection stability between the adapter component 2 and the coupling box 3. The number of mounting holes is not specifically limited here.

[0062] In some embodiments, the adapter component 2 may be provided with a receiving groove 28, and the cable 14 may be embedded in the receiving groove 28 after the adapter component 2 is installed in the mounting cavity 21, so as to support the cable 14 and limit the adapter component 2 and the light source component 1 through the cable 14.

[0063] In some embodiments, the coupling box 3 may be provided with a handle 32, which allows the operator to move the coupling box 3, thereby improving the operator's ease of operation.

[0064] In some embodiments, such as Figure 7 and Figure 8 As shown, the optical coupling assembly 100 also includes a cover 5 that is fastened to the coupling box 3. The adapter assembly 2 is located inside the coupling box 3 and the cover 5. One side of the cover 5 is provided with an outlet 51 through which the cable 14 of the light source assembly 1 passes.

[0065] In this way, the cover 5 can effectively protect the light source component 1 and the adapter component 2 when using the optical coupling component 100, and prevent the light source component 1 and the adapter component 2 from being damaged by external forces.

[0066] The cover 5 can be detachably mounted on the coupling box 3 or rotatably connected to the coupling box 3. When it is necessary to install the light source assembly 1 and the adapter assembly 2, the cover 5 can be moved away from the coupling box 3. After the installation of the light source assembly 1 and the adapter assembly 2 is completed, after the multiple cables 14 are all sorted to one side of the coupling box 3, the cover 5 can be fastened on the coupling box 3 and the cables 14 are gathered to the outlet 51 of the cover 5, so that the multiple cables 14 can pass through the outlet 51 and be located outside the coupling box 3.

[0067] The cable outlet 51 of the cover 5 and the optical fiber outlet 31 on the coupling box 3 can be located on one side of the coupling box 3 to improve the ease of operation of the optical fiber combing component 4 and the cable 14.

[0068] In some embodiments, there are multiple first limiting structures 22, which are arranged around the light-emitting body 12 to cooperate in abutting against the plate body 11.

[0069] In this way, several first limiting structures 22 can cooperate with the plate 11 to abut against it, thereby improving the installation stability of the plate 11 and avoiding problems such as tilting or shaking after the plate 11 is installed. Understandably, the number of first limiting structures 22 can be 2, 3, etc., and no specific limitation is made here.

[0070] Several first limiting structures 22 can be arranged in a ring, and the several first limiting structures 22 are spaced apart from the light-emitting body 12 on the plate 11 to avoid affecting the light-emitting body 12.

[0071] In some embodiments, such as Figure 3As shown, a stepped portion 26 corresponding to the light-emitting element 12 is formed on the cavity wall of the mounting cavity 21. The stepped portion 26 has a stepped surface located below the light-emitting element 12, and the distance between the stepped surface and the lower surface of the light-emitting element 12 is a first preset range. (See details in conjunction with...) Figure 3 , Figure 3 The distance A shown is the distance between the step surface and the lower surface of the light source 12.

[0072] Thus, the distance between the stepped surface of the step portion 26 and the lower surface of the light-emitting body 12 can be used to protect the light-emitting body 12, preventing the step portion 26 from contacting the light-emitting body 12 and affecting the light-emitting body 12, thereby reducing the service life of the light-emitting body 12. At the same time, it also prevents the distance between the stepped surface and the light-emitting body 12 from being too far, which would cause the near-infrared light emitted by the light-emitting body 12 to be unable to be effectively received by the light-receiving end of the optical fiber component 4, thereby affecting the light transmission efficiency between the light-emitting body 12 and the optical fiber component 4. Therefore, the first preset range should not be too large while being greater than 0, so that the distance between the stepped surface and the lower surface of the light-emitting body 12 is within a suitable range.

[0073] The first preset range is no more than 1 mm, preferably no more than 0.6 mm, such as the distance between the stepped surface and the lower surface of the light-emitting body 12 being 0.6 mm, 0.5 mm, 0.4 mm, 0.3 mm, 0.2 mm, etc.

[0074] This application also provides a near-infrared brain functional imaging device. For example... Figure 9 As shown, the near-infrared brain functional imaging device includes an optical coupling assembly 100 for near-infrared brain functional imaging devices according to any of the above embodiments, as well as a main unit 200 and a headgear 300. The plate 11 of the light source assembly 1 is connected to the main unit 200 via a connecting cable 14. The headgear 300 is equipped with a transmitting probe 301 and a receiving probe 302 connected to the main unit 200. The transmitting probe 301 is connected to an optical fiber 4 extending through the coupling box 3. The receiving probe 302 is used to receive near-infrared light emitted from the head to obtain near-infrared light signals and transmit the obtained near-infrared light signals to the main unit 200. The receiving probe 302 transmits the obtained near-infrared light signals to the main unit 200 via optical fibers. The optical fiber 4 and the optical fiber extending from the receiving probe can be the same or different, and can be adjusted according to actual needs.

[0075] The aforementioned near-infrared brain functional imaging device can be used in target scenarios where near-infrared light needs to be transmitted over a long distance to the subject's head using fiber optic component 4. The target scenario may be equipped with magnetic field-related devices, including but not limited to TMS (transcranial magnetic stimulation) devices, MRI (magnetic resonance imaging) devices, and magnetoencephalography (MEG) devices.

[0076] For example, when the near-infrared brain functional imaging device is applied in the aforementioned target scenario, both the host 200 and the optical coupling assembly 100 are located outside the acquisition chamber where a magnetic field exists. The optical fiber 4, passing through the coupling box 3, extends into the acquisition chamber to connect with the transmitting probe 301 on the headgear 300 located within the acquisition chamber. The transmitting probe 301 can emit near-infrared light, guided by the optical fiber 4, towards the subject's head. This ensures that only the optical fiber 4 and the headgear 300 exist within the acquisition chamber, guaranteeing a metal-free environment and improving the safety and effectiveness of data acquisition when magnetic field-related equipment and the near-infrared brain functional imaging device are used together. It should be noted that, when applied to this type of scenario, neither the optical fiber 4 nor the headgear 300 contains metal materials to avoid affecting the use of magnetic field-related equipment.

[0077] The near-infrared brain functional imaging device using the aforementioned optical coupling component 100 abuts against the plate 11 via the first limiting structure 22 on the cavity wall of the mounting cavity 21. This effectively limits the installation position of the plate 11 within the mounting cavity 21, enabling precise installation of the light source component 1. This ensures that the light-emitting element 12 on the plate 11 remains in a suitable installation position. Since the light-emitting element 12 operates at a high temperature, maintaining it in a suitable installation position helps extend its service life and prevents damage caused by the light-emitting element 12 moving too close to surrounding structures. Furthermore, the near-infrared light emitted by the light-emitting element 12 is directly transmitted to the optical fiber component 4. No light guide structure is provided between the light-emitting element 12 and the optical fiber component 4, greatly reducing the problems of poor coupling effect and severe light intensity attenuation caused by the light guide structure. This effectively improves the accuracy of the detection results and simplifies the installation process of the optical coupling component 100, increasing installation convenience.

[0078] This application also provides a system for combining fNIRS and TMS, the system including the above-mentioned near-infrared brain functional imaging device and TMS device.

[0079] The aforementioned system, via the main unit 200 of the near-infrared brain functional imaging device and the optical coupling assembly 100, can be positioned slightly away from the subject's head. An optical fiber 4, passing through the coupling box 3, is connected to a transmitting probe 301 on a headgear 300 located within the acquisition chamber. The transmitting probe 301 can emit near-infrared light, guided by the optical fiber 4, towards the subject's head. This allows for the transmission of near-infrared light to the subject's head using the non-metallic optical fiber 4 and the transmitting probe 301. In this scenario, the operator can use a TMS device containing a magnetic coil to perform transcranial magnetic stimulation (TMS) on the subject's head. Thus, both the fNIRS device and the TMS device can operate normally without interference, enabling simultaneous near-infrared data acquisition and TMS treatment.

[0080] Furthermore, although exemplary embodiments have been described herein, their scope includes any and all embodiments based on this application that have equivalent elements, modifications, omissions, combinations (e.g., schemes involving intersections of various embodiments), adaptations, or alterations. Elements in the claims will be interpreted broadly based on the language used in the claims and are not limited to the examples described in this specification or during the implementation of this application, and such examples will be interpreted as non-exclusive.

[0081] The above description is intended to be illustrative and not restrictive. For example, the above examples (or one or more of them) can be used in combination with each other. Other embodiments may be used by those skilled in the art upon reading the above description. Furthermore, in the above detailed description, various features may be grouped together to simplify the application. This should not be construed as an intention that a disclosed feature not claimed is necessary for any claim. Rather, the subject matter of the application may be less than all the features of a particular disclosed embodiment. Thus, the claims are incorporated herein by reference as examples or embodiments, wherein each claim is an independent, separate embodiment, and these embodiments are contemplated as being combined with each other in various combinations or arrangements. The scope of this application should be determined by reference to the appended claims and the full scope of their equivalents.

[0082] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. An optical coupling assembly for a near-infrared brain function imaging device, characterized by, include: A light source assembly, comprising a plate and a light-emitting element disposed on the plate; An adapter component has a vertically penetrating mounting cavity. The light source component is inserted into the mounting cavity through the upper opening of the mounting cavity. The light emitter emits near-infrared light towards the lower opening of the mounting cavity. A first limiting structure is provided on the cavity wall of the mounting cavity. The first limiting structure is used to abut against the plate. A light emission channel is formed between the lower opening of the mounting cavity and the light emitter. The light emission channel is used to accommodate an optical fiber component. The optical fiber component is used to transmit the near-infrared light emitted by the light emitter. A coupling box for housing the adapter assembly, wherein the lower opening of the mounting cavity extends into the coupling box.

2. The light coupling assembly for near-infrared brain function imaging apparatus according to claim 1, wherein, The plate has a protrusion on its side, and a limiting groove adapted to the protrusion is formed on the cavity wall of the mounting cavity to limit the placement position of the plate.

3. The light coupling assembly for near-infrared brain function imaging apparatus according to claim 1, wherein, The adapter component has a second limiting structure on the portion located on the light-emitting side of the light-emitting body. The second limiting structure is used to limit the installation position of the optical fiber component, so that the light-receiving end of the optical fiber component is close to the light-emitting body.

4. The light coupling assembly for near-infrared brain function imaging apparatus according to claim 1, wherein, The adapter component has at least one connection hole for mounting a fastener, so that the adapter component can be detachably mounted on the coupling box.

5. The light coupling assembly for a near-infrared brain function imaging apparatus according to claim 4, wherein The coupling box is provided with several mounting holes for passing through the fasteners. The light source assembly also includes a cable connected to the plate. The mounting holes are configured such that the cables of multiple light source assemblies are all gathered in the same direction.

6. The light coupling assembly for a near-infrared brain function imaging apparatus according to any one of claims 1 to 5, wherein The optical coupling assembly also includes a cover that is fastened to the coupling box. The adapter assembly is located inside the coupling box and the cover. One side of the cover is provided with an outlet for the cable of the light source assembly to pass through.

7. The light coupling assembly for near-infrared brain function imaging apparatus according to claim 1, wherein, There are several first limiting structures, which are arranged around the light-emitting body to cooperate in abutting against the plate.

8. The light coupling assembly for near-infrared brain function imaging apparatus according to claim 1, wherein, The cavity wall of the mounting cavity is formed with a stepped portion corresponding to the light-emitting body. The stepped portion has a stepped surface located below the light-emitting body, and the distance between the stepped surface and the lower surface of the light-emitting body is a first preset range.

9. A near-infrared brain function imaging apparatus characterized by comprising: Includes the optical coupling assembly for a near-infrared brain functional imaging device as described in any one of claims 1 to 8, and The host computer, the board of the light source assembly is connected to the host computer via a connecting cable; The headgear is equipped with a transmitting probe and a receiving probe connected to the host. The transmitting probe is connected to an optical fiber extending through the coupling box. The receiving probe is used to receive near-infrared light emitted from the head to obtain near-infrared light signals and transmit the obtained near-infrared light signals to the host.

10. A system for the combined use of fNIRS and TMS, characterized in that, The system includes the near-infrared brain functional imaging device as described in claim 9, and a TMS device.

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