Headgear, probe mounting assembly, and near-infrared brain function imaging device

Abstract

The application relates to a head cap, a probe mounting assembly and a near-infrared brain function imaging device capable of acquiring fNIRS data of at least a temporal lobe region. The head cap comprises a cushion assembly for fitting the head of a subject, a flexible cover arranged on a side of the cushion assembly away from the head of the subject and covering the cushion assembly, and a plurality of probe mounting portions for mounting probes. The cushion assembly comprises a first cushion capable of corresponding to the temporal lobe region above the ears and at the front and back positions of the subject, and two triangular cushions arranged respectively at the front and back positions of the ears. The plurality of probe mounting portions are arranged on a multi-layer structure comprising the cushion assembly and the flexible cover, and comprise a plurality of first probe mounting portions arranged at positions corresponding to the vertices of the triangular cushions. The first vertices of the two triangular cushions close to each other are connected, so that a pair of probes mounted at the two first vertices can form a detection channel. Thus, the temporal lobe region has a wide detection area.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and more specifically, to a headgear capable of acquiring fNIRS data of at least the temporal lobe region, a probe mounting assembly having the headgear, and a near-infrared brain functional imaging device having the probe mounting assembly. Background Technology

[0002] Currently, functional brain imaging technology is widely used in clinical practice and can be used to study the relationship between brain structural damage and brain functional defects, providing an important research tool for understanding the structural basis of brain function. In particular, near-infrared brain imaging (fNIRS) utilizes near-infrared light and a multi-channel sensor composed of transmitting and receiving probes to assess brain function based on the neural-blood oxygen coupling mechanism. FNIRS can penetrate the skull, detect and image changes in brain activity activation with high temporal resolution, and effectively visualize and quantitatively assess brain function. To more accurately acquire brain oxygenation information, the distance between the transmitting and receiving probes mounted on the headgear needs to be maintained within a certain range (2.5–3.2 cm, preferably 3 cm). The probe spacing cannot be too small. Therefore, how to arrange more probes within the limited headgear size while maintaining the required probe spacing to obtain more comprehensive brain activity information has become a research hotspot in this field.

[0003] Furthermore, each brain region contains even more subdivided areas. For example, the temporal lobe can be further subdivided into the middle temporal gyrus, fusiform gyrus, inferior temporal gyrus, and superior temporal gyrus. Existing headgear has a limited number of detection channels in the temporal lobe, making it impossible to detect fNIRS data from more subdivided brain regions, thus hindering a more comprehensive analysis of brain function. For instance, existing headgear does not have a specific design for the temporal lobe area corresponding to the area in front of and behind the subject's ear, resulting in the detection of only a small portion of the temporal lobe's fNIRS data. Summary of the Invention

[0004] Existing headgear cannot form detection channels corresponding to the middle temporal gyrus, fusiform gyrus, and inferior temporal gyrus in the temporal lobe region, resulting in a lack of analysis of brain function. To at least partially address the problems in the prior art, embodiments of this application provide a headgear capable of acquiring fNIRS data from at least the temporal lobe region, comprising: a padding assembly configured to fit the subject's head, the padding assembly including a first pad configured to correspond at least to the temporal lobe region above and in front of the subject's ear; a flexible covering body disposed on the side of the padding assembly away from the subject's head and configured to cover the padding assembly; and multiple probe mounting portions disposed on a multi-layered structure including the padding assembly and the flexible covering body, the multiple probe mounting portions being used to mount probes for acquiring fNIRS data; wherein the first padding includes two triangular pads respectively arranged corresponding to the in front of and behind the ear, and the multiple probe mounting portions include multiple first probe mounting portions disposed at positions corresponding to the vertices of the triangular pads, wherein the adjacent first vertices of the two triangular pads are connected. Therefore, the embodiments provided in this application can detect not only the temporal lobe region above the ear, but also the temporal lobe region surrounding the ear, thus providing a wider detection area for the temporal lobe and meeting more refined and diverse detection requirements.

[0005] According to a second aspect of this application, a probe mounting assembly is provided, including the aforementioned headcap and probe adapters for mounting to the various probe mounting portions of the headcap. Using this headcap allows for the formation of more detection channels in the temporal lobe region, enabling more comprehensive detection.

[0006] According to a third aspect of this application, a near-infrared brain functional imaging device is provided, comprising an fNIRS data acquisition module, a cable, and a probe, wherein the cable connects the fNIRS data acquisition module and the probe, and further comprising a probe mounting assembly according to the above description, wherein a probe adapter of the probe mounting assembly is used to adapt the probe. Thus, at least a more comprehensive detection of the temporal lobe region can be achieved.

[0007] A series of simplified concepts are introduced in the description of the invention, which will be further explained in detail in the detailed description section. This description is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0008] The advantages and features of this application are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0009] The following drawings, which are incorporated herein by reference and are used to understand this application, illustrate embodiments of the invention and their descriptions to explain the principles of the invention. In the drawings,

[0010] Figure 1 This is a perspective view of a headgear from a first angle according to an exemplary embodiment of the present application, wherein the headgear is worn on a head model;

[0011] Figure 2 According to Figure 1 A perspective view of the first padding of the headgear in the illustrated embodiment;

[0012] Figure 3 According to Figure 1 A perspective view of the headgear in the illustrated embodiment from a second angle, wherein the headgear is worn on a head model;

[0013] Figure 4 According to Figure 1 A perspective view of the second padding of the headgear in the illustrated embodiment;

[0014] Figure 5 According to Figure 1 A third-angle perspective view of the headgear in the illustrated embodiment, wherein the headgear is worn on a head model;

[0015] Figure 6 According to Figure 1 A perspective view of the third padding of the headgear in the illustrated embodiment;

[0016] Figure 7 According to Figure 1 A perspective view of the headgear in the illustrated embodiment from a fourth angle, wherein the headgear is worn on a head model;

[0017] Figure 8 According to Figure 1 A perspective view of the fourth padding of the headgear in the illustrated embodiment;

[0018] Figure 9 This is a plan view of a headgear according to an exemplary embodiment of this application.

[0019] The above figures include the following reference numerals:

[0020] 1. Head cap; 2. Head mold; 3. Ear; 10. First pad; 11. First probe mounting part; 12. First side; 13. First vertex; 14. Second vertex; 15. Third vertex; 16. Second side; 20. Second pad; 20a. Main pad; 20b. Auxiliary pad; 21, 21'. Second probe mounting part; 22. First cut; 30. Third pad; 31. Third probe mounting part; 32. Third side; 33. Fourth side; 34a and 34b. Fifth side; 35a and 35b. Sixth side; 36a and 36b. Seventh side; 40. Fourth pad; 41. Fourth probe mounting part; 42. Second cut; 50. Connecting part; 60. Flexible covering; 61. Fixing element; 62. Ear opening; 71. First discrete probe mounting part; 72. Second discrete probe mounting part; 80. Fifth pad. Detailed Implementation

[0021] In the following description, numerous details are provided to enable a thorough understanding of this application. However, those skilled in the art will appreciate that the following description merely illustrates preferred embodiments of the application, and that the application can be implemented without one or more of these details. Furthermore, to avoid confusion with this application, some technical features well-known in the art have not been described in detail.

[0022] To fully understand the embodiments of this application, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of this application is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this application are described in detail below; however, in addition to these detailed descriptions, this application may have other embodiments.

[0023] Reference Figure 1 This application provides a headgear 1. The headgear 1 is worn on the head of a subject to acquire fNIRS data of the brain, at least the temporal lobe region. As used in this application, the term "head" refers to organs above the neck (cervical spine), including the brain and extracranial tissues such as the skull, skin, and hair. The term "brain" as used in this application refers to the organ remaining after the removal of extracranial tissues, primarily intended to refer to the cerebrum, but not limited to it, and may also include the cerebrum, cerebellum, and brainstem. The term "whole brain" as used in this application is intended to distinguish it from separate brain regions such as the frontal lobe and temporal lobe, but is not limited to all regions of the "brain." "Whole brain" includes at least the frontal lobe, temporal lobe, parietal lobe, and occipital lobe, and in some cases (but not necessarily) may further include other brain regions.

[0024] exist Figure 1In this design, a headgear 1 is placed over a head model 2 to demonstrate the correspondence between the various components of the headgear 1 and the subject's brain. Furthermore, to showcase the internal structure of the headgear 1, the inside of the headgear 1 is folded outwards before being worn over the head model 2. For ease of understanding, this text describes the positional relationships of the various pads with reference to the illustrated wearing method, rather than the actual wearing method in use. However, in actual use… Figure 1 The outer side of the headgear 1 will face or even conform to the subject's head after the headgear 1 is worn on the subject's head. As shown, the headgear 1 may include a flexible covering 60 and a padding assembly (those components shown on the flexible covering 60 in the figure). The padding assembly may be configured to conform to the subject's head (in actual use, not in the figure). Exemplarily, the padding assembly may be processed to have a certain curvature to better conform to the subject's head. Exemplarily, the padding assembly may also be processed to have a certain degree of deformability, but preferably, limited elasticity. The deformability may be achieved by one or more of the following: 1. providing a cut in the padding assembly with an opening facing the subject's head; 2. providing an opening through the padding assembly; 3. making a portion of the padding assembly thinner, etc.

[0025] Since the padding assembly needs to conform to the subject's head during use, it can be made of materials with relatively poor thermal conductivity, such as non-metallic materials, to improve wearing comfort. In some embodiments, the padding assembly can be made of materials such as plastic or silicone, which better maintain their shape. In other embodiments, the padding assembly can be formed by a combination of rigid and elastic materials. For example, the padding assembly can be made of a rigid sheet covered with an elastic material such as silicone or rubber. Thus, the padding assembly can maintain a generally unchanged shape in its extension direction while having a certain degree of flexibility or elasticity in its thickness direction. The padding assembly typically has an easy-to-clean surface and is made of skin-friendly material, providing sufficient friction when against the subject's head to prevent displacement during the examination.

[0026] The flexible cover 60 may be disposed on the side of the padding assembly away from the subject's head and configured to cover the padding assembly. The flexible cover 60 may comprise various types of elastic fabrics, such as nylon, spandex, or yarns composed of two or more of these. In some embodiments, the flexible cover 60 may also be made of silicone and may have a thickness less than that of the padding assembly. The flexible cover 60 has better elasticity than the padding assembly, allowing the padding assembly to be firmly pressed against the subject's head after the subject wears the headgear 1. Its relatively small thickness prevents bulging under pressure. In some embodiments, the padding assembly is not glued to the flexible cover 60 but is only partially connected and fixed to each other. For example, the flexible cover 60 and the padding assembly are connected to each other via a mounting portion described below. When the flexible cover 60 is stretched, the unfixed portions of its surface may slide relative to the surface of the padding assembly. This effectively avoids discomfort to the examinee and excessive wrinkles caused by uneven force distribution on the flexible covering 60. In this embodiment, the flexible covering 60 is positioned on the side of the padding assembly away from the examinee's head and configured to cover the padding assembly, allowing for more even application of elasticity to the padding assembly, enabling it to better conform to the examinee's head. Optionally, in some embodiments, the padding assembly may include multiple independent pads, in which case the flexible covering 60 can hold the multiple pads together. Furthermore, the flexible covering 60 can help position the padding assembly at the desired location on the head. For example, the instruction manual for this headgear product can provide detailed instructions on the wearing position of the headgear 1. For example, the forehead edge may be at eyebrow level or a few centimeters above the eyebrow. Exemplarily, the flexible covering 60 may include a fastener 61 to maintain the relative position of the headgear 1 with respect to the examinee's head for an extended period. The fastener 61 may include a buckle, Velcro, or any other fastening mechanism.

[0027] Exemplarily, the headgear 1 may also include multiple probe mounting portions. These multiple probe mounting portions can be disposed on a multi-layered structure including a padding assembly and a flexible covering 60. The multiple probe mounting portions are used to mount probes for acquiring fNIRS data, and the probe mounting portions can be constructed in any structure, as long as the probes can be assembled. Exemplarily, the probes can be mounted to the probe mounting portions on the outside of the multi-layered structure. Exemplarily, the probes can pass through the multi-layered structure so that the probes can be in close contact with the subject's head to acquire fNIRS data. It should be noted that this application does not exclude the possibility of providing other layers on the inside of the padding assembly (i.e., the side closer to the subject's head) that the probe mounting portions do not pass through, and these other layers preferably allow near-infrared light to pass through in order to acquire fNIRS data.

[0028] Exemplarily, the padding assembly may include a first pad 10, which may be configured to correspond at least to the temporal lobe region above and in front of the subject's ear. Although the ear is not shown in the figures, the area where the ear is located is indicated by reference numeral 3 to facilitate understanding of the principles of this application. (See also...) Figure 1 and Figure 2 The first pad 10 may include two triangular pads arranged at positions corresponding to the front and rear of the ear portion 3, respectively. The aforementioned plurality of probe mounting portions may include a plurality of first probe mounting portions 11, which are positioned at positions corresponding to the vertices of the triangular pads. Thus, the first pad 10 may include at least six first probe mounting portions 11. In the illustrated embodiment, to improve the fit of the first pad 10, a triangular opening is formed in the center of the first pad 10. In other embodiments not shown, this central opening may have other shapes. Furthermore, openings may also be formed on one or more sides of the triangular pad. Optionally, the first pad 10 may also have a solid structure without any openings.

[0029] The first vertices 13 of the two triangular pads that are close to each other can be connected to maintain a stable relative positional relationship between the first probe mounting portions 11 located at the respective vertices of the two triangular pads. It should be noted that "close to" refers to having a smaller distance relative to other vertices. In some embodiments, the probe mounting portion may include mounting holes for mounting the probe, the direction of which may be perpendicular to the corresponding head surface when the headgear 1 is worn on the subject's head and in place. In other embodiments, the probe mounting portion may include a constraint piece extending along the surface of the headgear 1 and fixed at both ends to the surface of the headgear 1, with a portion of the headgear 1 below the constraint piece being hollowed out, so that after the probe is installed into the hollowed-out portion, the outer side of the probe can be limited by the constraint piece. The probe can pass through the hollowed-out portion into the interior of the headgear 1, and the probe cable can extend from the lateral opening of the constraint piece. Optionally, as... Figure 1 In the embodiment shown, the probe mounting portion can be an annular structure with mounting holes.

[0030] Specifically, a pair of probes used to acquire fNIRS data typically includes a transmitting probe and a receiving probe. The transmitting probe emits near-infrared light into the subject's brain. The receiving probe receives the near-infrared light from the transmitting probe, which, after being scattered by the brain, passes through the scalp surface. As mentioned above, during fNIRS testing, the distance between the transmitting and receiving probes needs to be maintained within a certain range to form a detection channel between them to acquire effective fNIRS data. The first pad 10 helps to stably connect all its corresponding first probe mounting portions 11 together. The rigidity of the first pad 10 in the extension direction prevents the distance between the first probe mounting portions 11 from increasing as the flexible cover 60 is stretched or decreasing as it is compressed. The structural stability of each triangular pad ensures that the distance between the probes remains within the desired range under external force. Moreover, the connection between two triangular pads at the first vertex 13 further maintains a stable relative positional relationship between the first probe mounting portions 11 located at the respective vertices of the two triangular pads. In addition, two triangular pads are allowed to follow the headgear 1 and fit on the front and back sides of the subject's ears 3. Specifically, the two triangular pads are more suitable for the position of the subject's ears 3 than other shapes, and can fit the area better when the headgear 1 is worn on the head. This allows the probe mounted on the first probe mounting part 11 to fit better on the scalp, so as to obtain more accurate fNIRS data.

[0031] Reference Figure 1 , Figure 2 and Figure 9 In one exemplary embodiment, a first pad 10 is disposed in the corresponding temporal lobe region of the headgear 1. See also Figure 9 First pads 10 are provided on the left and right sides of the head. Each first pad 10 may include six first probe mounting portions 11. Taking the left first pad 10 as an example, when the headgear 1 is worn, the four first probe mounting portions 11 provided at the top are used to mount transmitting probes, such as S5, S39, S16, and S12 shown in the figure, and the two first probe mounting portions 11 provided at the bottom are used to mount receiving probes, such as D1 and D2 shown in the figure. In this embodiment, each of the two lower first probe mounting portions 11 has a center distance from the two of the four upper first probe mounting portions 11 to satisfy the desired distance. Thus, the four transmitting probes and the two receiving probes form four detection channels 13, 24, 48, and 36.

[0032] In other embodiments, the two lower first probe mounting portions 11 can also be used to mount a transmitting probe, and the upper first probe mounting portion 11 can be used to mount a receiving probe. In some embodiments, the two middle two of the four upper first probe mounting portions 11 have a center distance that meets the desired distance. For example, the first probe mounting portions 11 corresponding to S16 and S39 in the figure can have a center distance that meets the desired distance. When the two first probe mounting portions 11 are respectively equipped with a transmitting probe and a receiving probe, a detection channel can also be formed.

[0033] In a preferred embodiment, such as Figure 9 As shown, the four uppermost first probe mounting parts 11 may not meet the expected distance, and the center distance between the first probe mounting parts 11 corresponding to S12, S16, S5, and S39 may not meet the expected distance. However, the two lowermost first probe mounting parts 11, namely the first probe mounting parts 11 corresponding to D1 and D2, respectively have a center distance that meets the expected distance with the four uppermost first probe mounting parts 11, namely D1 with the first probe mounting parts 11 corresponding to S12 and S16, and D2 with the first probe mounting parts 11 corresponding to S5 and S39. Thus, a maximum of four detection channels can be formed. Furthermore, since the four uppermost first probe mounting parts 11 do not meet the expected distance, these four first probe mounting parts 11 are not limited by the expected distance. They can form more detection channels with multiple first probe mounting parts 11 located in the periphery (or on adjacent pads) (when the expected distance is met). This allows for more comprehensive detection of the temporal lobe area and a good connection with adjacent brain regions of the temporal lobe area to cover more brain regions, thereby achieving detection of more brain regions.

[0034] In some embodiments, the center distance between any two adjacent first probe mounting portions 11 at the top meets the desired distance.

[0035] In summary, the center distance of the probe mounting parts can be reasonably adjusted according to the number of detection channels to be formed and the condition of the head surface, so that the center distance between adjacent probe mounting parts meets or does not meet the expected distance. Furthermore, the position of the probe mounting parts can be adjusted according to the type of transmitting or receiving probes installed on the probe mounting parts and the need to form channels between different areas.

[0036] Preferably, such as Figure 1 As shown, the flexible covering 60 has an ear opening 62 at the position corresponding to the ear 3 for accommodating the ear 3. The two triangular pads of the first pad 10 can be configured to be arranged in an inverted triangle around the ear opening 62, as shown. Figure 2As shown, each of the two triangular pads has a first side 12 connecting the first vertex 13 and the third vertex 15, and a second vertex 14 located below the first side 12.

[0037] For each of the two triangular pads, the probe positioned at the second vertex 14, together with the two probes positioned at the first vertex 13 and the third vertex 15, can form a detection channel. This allows the probes fitted to the temporal lobe region corresponding to the ear 3 to be positioned around the ear 3, not only avoiding the ear 3 protruding from the head surface, but also enabling the two inverted triangular pads to better conform to the scalp area when worn on the head, and forming more detection channels for a more comprehensive detection of the temporal lobe region.

[0038] Therefore, the embodiments provided in this application can not only detect the temporal lobe region above the ear 3, but also detect the temporal lobe region around the ear 3, with a wider detection area, which can meet more refined and diversified detection requirements.

[0039] For example, such as Figure 1 As shown, the first sides 12 of both triangular pads are located above the ear opening 62. The projections of the first sides 12 of the two triangular pads onto the plane corresponding to the sagittal plane of the subject lie on a predetermined straight line (see...). Figure 2 (The dotted line in the diagram). When the headgear 1 is worn on the subject's head, the angle between the predetermined straight line and the horizontal direction can be less than a preset threshold. Influenced by the shape of the subject's back of the head, for example, in some cases where this area gradually protrudes outwards, the predetermined straight line can be inclined downwards in a front-to-back direction. However, considering the need to cover the temporal lobe region in front of and behind the ear 3, the angle between the predetermined straight line and the horizontal direction should not be too large. Therefore, the preset threshold can be set with reference to ensuring that the two triangular pads can cover the temporal lobe region in front of and behind the ear 3 as much as possible. For example, the preset threshold can be less than or equal to 30 degrees. The second vertices 14 of the two triangular pads can be respectively positioned in front of and behind the ear opening 62.

[0040] The human head has a curvature, and after wearing the headgear 1, the first side 12 can extend along the curve that generally conforms to the subject's head. The probes installed on the corresponding first probe mounting parts 11 on the first side 12 can also form a detection channel with the probes on the third pad mentioned below.

[0041] In summary, considering the interference at ear position 3, two triangular pads are positioned around ear 3, completely exposing it to maintain wearer comfort. This design creates sufficient detection channels in key areas of focus, such as having the desired distance from the probe mounting points on other pad components described below, forming 6 detection channels, for a total of 12 detection channels. Therefore, the channels are arranged in a triangular pattern, resulting in a denser channel density and the acquisition of more information on brain oxygenation changes.

[0042] For example, such as Figure 2 As shown, the two first vertices 13 can be integrally connected via the connecting portion 50. The second sides 16 of the two triangular pads, correspondingly distributed at the front and rear positions of the ear 3, and the connecting portion 50 are configured to avoid the curved edges of the subject's ear 3. Specifically, when the distance between the two triangular pads increases or the triangular pads rotate, the detection channel formed between some probes may extend beyond the temporal lobe, or it may be unable to form more detection channels with probes in other areas. Changes in the detection channel may introduce interference, leading to a decrease in data accuracy. Integrating the two first vertices 13 via the connecting portion 50 can at least prevent the two triangular pads from moving away from each other due to the stretching of the flexible cover 60 or the convex shape of the head, thereby affecting the relationship of the detection channel formed with probes in other areas. The connecting portion 50, with sufficient strength, can also prevent the triangular pads from rotating. The fact that part of the triangular pad is configured to fit the curved edge of the subject's ear 3 allows the triangular pad to have sufficient material to ensure strength without applying excessive pressure to the subject's ear 3, while also having appropriate spacing to form an effective detection channel.

[0043] Exemplarily, the head cap 1 can at least be used to acquire fNIRS data of the middle temporal gyrus and fusiform gyrus. Since at least part of the probe can be positioned on one or both sides of the ear 3, the inventors, through localization analysis of the detection channel formed in this area, discovered that this arrangement allows the formed detection channel to pass through the difficult-to-detect middle temporal gyrus and fusiform gyrus, thereby acquiring fNIRS data in this area. Exemplarily, the first pads 10 are located on both sides of the head cap 1 and are symmetrically distributed. For most test subjects, the two hemispheres of their brains are symmetrical, thus allowing for simultaneous detection of fNIRS data from both temporal lobes.

[0044] For example, in conjunction with reference Figure 3 and Figure 4The padding assembly may further include a second pad 20. The second pad 20 is arranged at least corresponding to the frontal lobe area. The aforementioned plurality of probe mounting portions may include at least two rows of laterally arranged plurality of second probe mounting portions, which may be positioned corresponding to the second pad 20. Adjacent second probe mounting portions are spaced at a desired distance. The lateral direction refers to the approximate left-right direction when the headgear 1 is worn on the subject's head. Figure 3 and Figure 4 In the illustrated embodiment, to improve wearing comfort and / or fit more subjects' head shapes, the second pad 20 may include a main pad 20a and an auxiliary pad 20b. The main pad 20a is a single piece. The auxiliary pads 20b are independent of each other and separate from the main pad 20a. In the illustrated embodiment, the main pad 20a may have two rows of second probe mounting portions 21, and the auxiliary pad 20b may have one row of second probe mounting portions 21' (distinguished from the second probe mounting portions 21). In other embodiments not shown, the number of rows and the number of second probe mounting portions in each row on the main pad 20a and auxiliary pad 20b can be set as needed. The auxiliary pad 20b may be connected to the main pad 20a.

[0045] Optionally, each auxiliary pad 20b may be provided with a second probe mounting portion 21'. Multiple auxiliary pads 20b may be connected to the main pad 20a respectively. The number of second probe mounting portions 21' in each row may be less than the number of second probe mounting portions 21 in each row, to avoid the third pad 30 corresponding to the large motor area (described later). At least one of the second probe mounting portions 21 and / or 21' that is close to the third apex 15 of the triangular pad arranged in front of the ear has a desired distance from the first probe mounting portion 11 provided corresponding to the third apex 15. (Reference) Figure 1 and Figure 9 The second probe mounting portions 21 located at both ends of the main pad 20a are closer to the ear 3 in the horizontal direction and are at a similar height to the ear 3. At least one of these second probe mounting portions 21 can have a center distance that satisfies the desired distance from the first probe mounting portion 11 located above the ear 3 and closest to the forehead (i.e., the first probe mounting portion 11 at the third apex 15). Thus, taking the left side as an example again, as Figure 9The transmitting probe S5 and receiving probe D6 can form a detection channel 15. Ideally, this detection channel can detect the intersection region of the frontal and temporal lobes. In other embodiments, the detection channel may also be located entirely within the temporal lobe or entirely within the frontal lobe. In other embodiments, the transmitting probe S4 in the present figure may also be configured as a receiving probe, and the center distance between the transmitting probe S5 and the receiving probe meets the desired distance, thereby forming a detection channel. In yet another embodiment, the transmitting probe S4 in the present figure may also be configured as a receiving probe, and the center distance between it and the transmitting probe S5 in the present figure meets the desired distance, thereby forming a detection channel. Preferably, the transmitting probe S5 is configured as a receiving probe, and the center distance between it and the receiving probe S5 in the present figure meets the desired distance, thereby forming a detection channel. Figure 9 The transmitting probe S5 and the receiving probe D6 form a detection channel 15. The inventors found that this arrangement is more conducive to obtaining fNIRS data of the key brain regions represented by the detection channel 15 (ideally, the detection channel 15 is located at the boundary between the temporal pole and the triangle of the inferior frontal gyrus). Furthermore, when the headgear 1 is actually worn on the head, the distance between the transmitting probe S5 and the receiving probe D6 allows for the acquisition of better fNIRS data.

[0046] It is understandable that there can be various ways to divide brain regions. For example, it can be divided using the common frontal, temporal, occipital, and parietal lobes. Further detailed divisions can be made within these regions, or the Broadman partitioning system can be used. It should be understood that boundaries exist between these brain regions. When the headgear is worn, some probes mounted on it may collect fNIRS data at the boundaries of these brain regions. In this application, "the third pad corresponding to the greater motor area" is understood to mean that when the third pad is worn on the subject's head, it at least covers a portion of the subject's greater motor area, and when the probe is mounted at this location, it can at least acquire fNIRS data from a portion of the subject's greater motor area. However, it does not preclude the possibility that probes mounted on the third pad may not be able to collect fNIRS data from the boundaries of the greater motor area or from adjacent peripheral brain regions. Other similar descriptions in this application are explained here in the context of "the third pad corresponding to the greater motor area," and will not be repeated here.

[0047] As previously described, the second pad 20 may include a main pad 20a and an auxiliary pad 20b. To ensure strength and fit snugly to the forehead, the main pad 20a may correspond to a relatively flat area of ​​the forehead and is a single piece extending laterally. Multiple second probe mounting portions 21 are evenly distributed on the single piece, with the center distance between adjacent second probe mounting portions 21 meeting the desired distance. Multiple first incisions 22 may be provided at the lower part of the main pad 20a. These first incisions 22 can separate at least a few of the second probe mounting portions 21 in the bottom row from each other. Thus, when wearing the headgear 1, the opening of the headgear 1 is usually opened to cover the forehead protrusion, and in some cases or due to different wearing habits of different subjects, it may be necessary to open the opening of the headgear 1 even wider. These first incisions 22 allow the opening of the headgear 1 to have a certain degree of expansion capability. After the headgear 1 is worn on the subject's head, the aforementioned second probe mounting portions 21 can maintain a center distance of the desired distance between each other and between themselves and other adjacent second probe mounting portions 21. Thus, under the action of the flexible cover 60, those second probe mounting portions 21 that are allowed to move slightly during wearing can return to the desired center distance to form a detection channel.

[0048] Exemplarily, there can be multiple auxiliary pads 20b, which can be arranged in a lateral direction. Exemplarily, each auxiliary pad 20b can be provided with a second probe mounting portion 21'. The auxiliary pads 20b are located above the main pad 20a. The number of second probe mounting portions 21' in each row can be less than the number of second probe mounting portions 21' in each row on the main pad 20a. This allows for a more comprehensive and complete measurement of the prefrontal cortex, and also avoids the large motor areas and other brain regions of interest that are desired to be measured individually. Figure 9 In the illustrated embodiment, seven second probe mounting portions 21 are provided in each row on the main pad 20a. The probes in the upper row can be arranged as follows: transmitting probe - receiving probe - transmitting probe - receiving probe... ending with the transmitting probe. The second probe mounting portions 21 in the lower row can be used to mount probes in a complementary manner to the probes in the upper row. For example, the upper second probe mounting portion 21 can mount the transmitting probe, and the lower second probe mounting portion 21 can correspondingly mount the receiving probe. The second probe mounting portions 21' on the auxiliary pad 20b are also mounted with probes in a complementary manner. This allows for the formation of more detection channels. In addition, one or more openings can be provided on the main pad 20a to improve the fit of the main pad 20a.

[0049] Therefore, the probes on the second pad 20 and the second probe mounting portions 21 and 21' corresponding to the forehead region can form a total of 28 detection channels, and together with the probes on the probe mounting portions of other surrounding pad assemblies, they can form 6 detection channels, for a total of 34 detection channels. The second probe mounting portions on the second pad 20 can be arranged in a matrix.

[0050] Exemplarily, the liner assembly may also include a third liner 30, in conjunction with [see also...] Figure 1 , Figure 5 and Figure 6 The third pad 30 should at least correspond to the large movement area. Among them, Figure 6 A third pad 30 corresponding to the major motor area of ​​the left brain is shown. The third pad 30 may have a third side 32 arranged side-by-side with the first side 12 of the two triangular pads (i.e., the first pad 10). The aforementioned plurality of probe mounting portions may further include a plurality of third probe mounting portions 31 disposed at positions corresponding to the third side 32. The center distance between adjacent third probe mounting portions 31 satisfies the desired distance. Moreover, the center distance between the plurality of third probe mounting portions 31 and the first probe mounting portions 11 disposed at positions corresponding to the first side 12 all satisfies the desired distance. Those skilled in the art will understand based on the description of this application that it is not required that the center distance between each third probe mounting portion 31 at the third side 32 and all the first probe mounting portions 11 at the first side 12 satisfies the desired distance; conversely, it is not required that the center distance between each first probe mounting portion 11 at the first side 12 and all the third probe mounting portions 31 at the third side 32 satisfies the desired distance. It is permissible if each third probe mounting portion 31 at the third side 32 has a center-to-center distance that satisfies the desired distance for at least one first probe mounting portion 11 located at the first side 12; or if each first probe mounting portion 11 at the first side 12 has a center-to-center distance that satisfies the desired distance for at least one third probe mounting portion 31 located at the third side 32. In this document, there are also descriptions of the center-to-center distance between probe mounting portions on other different pads satisfying the desired distance, which can also be understood with reference to the above explanation.

[0051] For example, in conjunction with reference Figure 5 , Figure 6 and Figure 9The third pad 30 may have a third side 32 and a fourth side 33 symmetrically arranged along the axis of symmetry PP. The axis of symmetry PP may be close to the triangular pad in the first pad 10 arranged in the preauricular region. The fourth side 33 may be located in front of the third side 32, and the third side 32 and the fourth side 33 intersect at the axis of symmetry PP. The third side 32 is closer to the first pad 10 in the temporal lobe position than the fourth side 33, and the fourth side 33 is closer to the second pad 20 in the frontal lobe position. Three third probe mounting portions 31 are correspondingly provided at the third side 32 and the fourth side 33, and a third probe mounting portion 31 is shared at the intersection of the third side 32 and the fourth side 33. Thus, five third probe mounting portions 31 on the third pad 30 can be determined. Preferably, the three third probe mounting portions 31 on the third side 32 near the first pad 10 can form multiple detection channels with the four third probe mounting portions 31 on the first side 12 of the first pad 10. Figure 9 As shown, taking the left side of the figure as an example, the three third probe mounting parts 31 on the third side 32 are used to install three receiving probes D3, D4, and D5, and the four third probe mounting parts 31 on the first side 12 are used to install four transmitting probes S12, S16, S39, and S5, which can form a maximum of 1, 26, 25, 50, 49, and 37 detection channels. Of course, in embodiments not shown, due to different types of probe installation, or if one or two of the third probe mounting parts 31 corresponding to D3 and D5 do not meet the expected distance with the third probe mounting parts 31 close to the first side 12, there may be embodiments with 5, 4, 3, 2, or 1 detection channels.

[0052] Exemplarily, the fourth side 33 may have a third probe mounting portion 31 close to the second probe mounting portion 21' at the topmost and endmost position of the second pad 20, thereby forming a detection channel. The center distance between adjacent third probe mounting portions 31 on the fourth side 33 can satisfy the desired distance, so that probes mounted on the third probe mounting portions 31 on the fourth side 33 can form up to two detection channels. The third probe mounting portion 31 closest to the second probe mounting portion 21' on the second pad 20 can have a center distance between it and the second probe mounting portion 21' that satisfies the desired distance, thereby probes mounted on these two probe mounting portions can form a detection channel. Optionally, in other embodiments not shown, the center distance between the two probe mounting portions corresponding to D12 and D15 can also satisfy the desired distance, so that the two probe mounting portions corresponding to them can respectively mount a transmitting probe and a receiving probe. Similarly, some probe mounting portions that also satisfy the desired distance may not be able to form a detection channel under the current probe configuration, but may be able to form a detection channel under other probe configurations.

[0053] For example, such as Figure 6As shown, the third pad 30 may include two symmetrical fifth sides 34a and 34b extending from the endpoints of the third side 32 and the fourth side 33 away from the axis of symmetry PP, respectively. Each fifth side 34a and 34b may be provided with two third probe mounting portions 31, and one of the third probe mounting portions 31 may be shared with either the third side 32 or the fourth side 33. The fifth sides 34a and 34b are relatively short, allowing the third pad 30 to further include two sixth sides 35a and 35b, with the two fifth sides 34a and 34b respectively connecting between the two sixth sides 35a and 35b and the third side 32 and the fourth side 33. (See also...) Figure 1 , Figure 6 and Figure 9 The sixth side 35a is closer to the frontal lobe, and the fifth side 34b is closer to the occipital lobe. The sixth side 35a can be located roughly at the top of the head, spaced apart from the head bisector OO. The bisector OO refers to the intersection of the sagittal plane and the surface of the head. The third probe mounting part 31 on the sixth side 35a can have a center distance that meets the desired distance from the probe mounting part on the bisector OO. In this way, the probe on the bisector OO can form a detection channel with the adjacent probes on the third pads 30 on both sides. The curvature of the head is relatively large near the bisector OO. The third pads 30 of the left and right hemispheres can be spaced apart and avoid the part where the bisector OO is located to prevent the headgear 1 from bulging. Specifically, the highest point of the human skull is generally near the CZ point, and the bisector OO usually passes through the CZ point. If the third pad 30 covers it, the force inside will not be distributed, which will cause the third pad 30 at the entire CZ point position to bulge, and the probe will also bulge, affecting the comfort of wearing it.

[0054] Reference Figure 1 and Figure 6 The axis of symmetry PP of the third pad 30 can generally pass through or be close to the first probe mounting part 11 near the forehead above the ear 3 of the first pad 10 (i.e., Figure 9The first probe mounting portion 11 corresponding to S5 extends towards the top. The extension direction of the axis of symmetry PP can be set according to the following rule, so that the center distance between at least one third probe mounting portion 31 on the fourth side 33 and the second probe mounting portion 21 on the second pad 20 meets the desired distance. Preferably, a first discrete probe mounting portion 71 can also be provided in the area surrounded by the fifth side 34a of the third pad 30 and the second pad 20. A second discrete probe mounting portion 72 can be provided between the sixth sides 35a of the two third pads 30. The first discrete probe mounting portion 71 and the second discrete probe mounting portion 72 can respectively form as many detection channels as possible with the adjacent probe mounting portions on the pads around them. The third pad 30 can also include two seventh sides 36, which are connected between the two sixth sides 35a and 35b. The two seventh sides 36 intersect and the intersection point is located on the axis of symmetry PP. The intersection point of the two seventh sides 36 can be recessed toward the interior of the third pad 30, thereby avoiding the fifth pad 80 provided for the corresponding top leaf, see Figure 5 and Figure 7 This allows space to be provided for the padding at the top leaf. Furthermore, this arrangement still allows for relatively comprehensive detection of the large motion area.

[0055] For example, the third pad 30 is configured as an axisymmetric octagon, and the plurality of probe mounting portions include a plurality of third probe mounting portions 31 disposed at positions corresponding to each side of the octagon and at positions corresponding to the internal regions formed by the respective sides, with a desired distance between adjacent third probe mounting portions 31.

[0056] For example, in conjunction with reference Figure 7 and Figure 8 The liner assembly may also include a fourth liner 40. The fourth liner 40 and the surrounding probe mounting portion are arranged similarly to the configuration of the second liner 20 and the surrounding probe mounting portion, which can well adapt to the curvature of the occipital lobe region and avoid the formation of bulges in this area.

[0057] In one specific embodiment, the fourth pad 40 can be arranged corresponding to the occipital lobe region and can remain connected with the first pad 10 in the temporal lobe to form more detection channels. Considering the large variations in the occipital lobe of different people's heads and the area of ​​the occipital lobe region, only two rows of probe mounting parts are set. This ensures that the flexible covering body 60 can press down on the fourth pad 40 and adapt to the back of the head region of different subjects, while also ensuring the detection of key areas of the occipital lobe region within a limited scalp area. The aforementioned multiple probe mounting parts can include at least one row of multiple fourth probe mounting parts 41 arranged horizontally at the position corresponding to the fourth pad 40. Among the multiple fourth probe mounting parts 41, the fourth probe mounting part 41 located at the third vertex 15 of the triangular pad corresponding to the posterior part of the ear near the first pad 10 has a center distance between it and the first probe mounting part 11 located at the third vertex 15, which meets the desired distance, thereby forming more detection channels to detect the boundary region of the temporal or occipital lobe.

[0058] Similar to the relationship between the second pad 20 and the first pad 10 in the frontal lobe, the fourth pad 40 and the first pad 10 may each have probe mounting portions close to each other, thereby forming a detection channel. Ideally, this detection channel can detect the intersection region of the occipital and temporal lobes. Alternatively, the detection channel may also be located entirely within the temporal lobe, or entirely within the occipital lobe, or at the boundary between the temporal and occipital lobes. Figure 9 In the illustrated embodiment, taking the left side as an example, the center distance between the transmitting probe S12 on the first pad 10 and the receiving probe D7 on the fourth pad 40 can meet the desired distance to form a detection channel. In other embodiments, the positions of the two can be interchanged, that is, the current receiving probe D7 is replaced with the transmitting probe, and the current transmitting probe S125 is replaced with the receiving probe.

[0059] The lower part of the fourth pad 40 may be provided with multiple second cuts 42. These second cuts 42 can separate the fourth probe mounting parts 41 located at least in the middle of the bottom row from each other. Thus, when wearing the headgear 1, the opening of the headgear 1 is usually opened to cover the protrusion at the back of the head, and in some cases or due to different head shapes of different subjects, the opening of the headgear 1 needs to be opened even wider. These second cuts 42 allow the opening of the headgear 1 to have a certain degree of expansion capability. After the headgear 1 is worn on the subject's head, it is desirable that the aforementioned fourth probe mounting parts 41 maintain a desired center distance from each other and from other adjacent fourth probe mounting parts 41 on the left and right. Therefore, under the action of the flexible cover 60, those fourth probe mounting parts 41 that are allowed to move slightly during wearing can return to the desired center distance to smoothly form a detection channel.

[0060] Preferably, the headgear 1, which includes the aforementioned padding components and the flexible covering 60, is arranged in the same direction as the probe mounting part in the middle area of ​​the subject's head, and the direction of the EEG points (10-20 electrode lead positions), which makes it easier for the operator to install the probe in the corresponding position.

[0061] This application also provides a probe mounting assembly, including a headcap as described in any of the above embodiments and probe adapters for mounting to the various probe mounting portions of the headcap. Using this headcap allows for the formation of more detection channels in the temporal lobe region, enabling more comprehensive detection.

[0062] This application also provides a near-infrared brain functional imaging device, which includes an fNIRS data acquisition module, a cable, and a probe connected to the cable, and further includes a probe mounting assembly according to any of the above embodiments, wherein a probe adapter of the probe mounting assembly is used to adapt the probe. Thus, at least a more comprehensive detection of the temporal lobe region can be achieved.

[0063] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front", "rear", "up", "down", "left", "right", "lateral", "vertical", "horizontal", "top", and "bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0064] For ease of description, relative terms such as "above," "over," "on the upper surface of," and "above" are used here to describe the regional positional relationship of one or more components or features shown in the figures to other components or features. It should be understood that relative terms include not only the orientation of the component as depicted in the figure but also different orientations during use or operation. For example, if the components in the figures are inverted as a whole, "above" or "above other components or features" will include cases where the component is "below" or "under" other components or features. Thus, the exemplary term "above" can include both "above" and "below." Furthermore, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this document intends to include all such cases.

[0065] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, parts, components, and / or combinations thereof.

[0066] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar subjects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0067] This application has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this application to the scope of the described embodiments. Furthermore, those skilled in the art will understand that this application is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this application, all of which fall within the scope of protection claimed by this invention. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A headgear capable of acquiring at least fNIRS data of the temporal lobe region, characterized in that, include: A padding assembly configured to conform to the head of a subject, the padding assembly including a first pad configured to correspond at least to the temporal lobe region above and in front of the subject's ear; A flexible covering is disposed on the side of the pad assembly away from the head of the subject and is configured to cover the pad assembly. as well as Multiple probe mounting portions are disposed on a multi-layer structure including the pad assembly and the flexible cover, and the multiple probe mounting portions are used to mount probes for acquiring fNIRS data; The first pad includes two triangular pads arranged at the front and back positions of the ear, respectively. The plurality of probe mounting parts include a plurality of first probe mounting parts arranged at positions corresponding to each vertex of the triangular pads, wherein the first vertices of the two triangular pads that are close to each other are connected.

2. The headgear according to claim 1, characterized in that, The flexible covering has an ear opening for accommodating an ear, and the two triangular pads are configured to be arranged in an inverted triangle around the ear opening, such that each of the two triangular pads has a first side connecting the first vertex and the third vertex, and a second vertex located below the first side, wherein: For each of the two triangular pads, the probe positioned at the second vertex can form a detection channel with the two probes positioned at the first and third vertices.

3. The headgear according to claim 2, characterized in that, The first sides of both triangular pads are located above the ear opening, wherein: The projections of the first sides of the two triangular pads onto the plane corresponding to the sagittal plane of the subject lie on a predetermined straight line, the angle between the predetermined straight line and the horizontal direction being less than a preset threshold, and The second vertices of the two triangular pads are respectively positioned at the front and rear of the ear opening.

4. The headgear according to claim 1, characterized in that, The two first vertices are integrally connected via a connecting portion, and the second sides of the two triangular pads, which are distributed at the front and rear positions of the ear, are configured with the connecting portion to avoid the curved edge of the subject's ear.

5. The headgear according to claim 1, characterized in that, The cap can be used to acquire fNIRS data for at least the middle temporal gyrus and fusiform gyrus.

6. The headgear according to any one of claims 1-5, characterized in that, The padding assembly includes two first pads, which are located on both sides of the cap and are symmetrically distributed.

7. The headgear according to any one of claims 1-5, characterized in that, The pad assembly further includes a second pad, which is arranged at least corresponding to the frontal lobe region. The plurality of probe mounting portions include at least two rows of laterally arranged second probe mounting portions disposed at positions corresponding to the second pads. The center-to-center distance between adjacent second probe mounting portions satisfies a desired distance. In the second probe mounting portion, at least one of the second probe mounting portions that is close to the third vertex of the triangular pad arranged in front of the ear has a center distance from the first probe mounting portion that is arranged corresponding to the third vertex, which satisfies the desired distance.

8. The headgear according to any one of claims 1-5, characterized in that, The padding assembly further includes a third pad, which at least corresponds to the large motion area and has a third side arranged parallel to the first side of the two triangular pads. The plurality of probe mounting portions include a plurality of third probe mounting portions disposed at positions corresponding to the third side, and the center distance between adjacent third probe mounting portions satisfies a desired distance. The center distances between the plurality of third probe mounting parts and the first probe mounting part set at the position corresponding to the first side all meet the desired distance.

9. The headgear according to claim 8, characterized in that, The third pad is constructed as an axisymmetric octagon. The plurality of probe mounting portions include multiple third probe mounting portions disposed at positions corresponding to each side of the octagon and at positions corresponding to the internal regions formed by the sides. The center distance between adjacent third probe mounting portions satisfies a desired distance. The octagon also has a fourth side that is symmetrical about its axis of symmetry to the third side, the fourth side being located in front of the third side, and the third side and the fourth side intersecting at the axis of symmetry; The axis of symmetry is located near the triangular pad positioned in front of the corresponding ear.

10. The headgear according to any one of claims 1-5, characterized in that, The liner assembly further includes a fourth liner, which is arranged at least corresponding to the occipital lobe region. The plurality of probe mounting portions include at least one row of horizontally arranged fourth probe mounting portions disposed at positions corresponding to the fourth liner. Among the plurality of fourth probe mounting portions, the fourth probe mounting portion located at the third vertex of the triangular pad arranged near the corresponding posterior part of the ear has a center distance from the first probe mounting portion located at the third vertex that satisfies the desired distance.

11. A probe mounting assembly, characterized in that, include: The headgear according to any one of claims 1 to 10; and Probe adapters for mounting to the respective probe mounting portions of the headgear.

12. A near-infrared brain functional imaging device, comprising an fNIRS data acquisition module, a cable, and a probe, wherein the cable is connected between the fNIRS data acquisition module and the probe, characterized in that, It also includes the probe mounting assembly according to claim 11, wherein the probe adapter of the probe mounting assembly is used to adapt the probe.

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