Intracranial hemorrhage detection device and its antenna

Abstract

Embodiments of the present application relate to the technical field of antennas, and particularly relate to an intracranial hemorrhage detection device and an antenna thereof. The antenna comprises a shell, a grounding member, a first radiating unit and a second radiating unit. The shell forms a cavity with an open side; the first radiating unit and the second radiating unit are arranged at the opening of the cavity and are electrically connected to the shell through the grounding member to be grounded; the first radiating unit is arranged to be capable of receiving and emitting low-frequency microwave signals through the opening of the cavity; and the second radiating unit is arranged to be capable of receiving and emitting high-frequency microwave signals through the opening of the cavity under the coupling action of the first radiating unit. Embodiments of the present application can expand the frequency bands of the microwave signals received and emitted by the antenna, thereby facilitating the improvement of the accuracy of intracranial hemorrhage detection using microwaves.

Description

Technical Field

[0001] The embodiments of this application relate to the field of antenna technology, and in particular to an intracranial hemorrhage detection device and its antenna. Background Technology

[0002] This section provides background information relevant to this application only and does not necessarily constitute prior art.

[0003] Intracranial hemorrhage is a common acute and critical illness in clinical practice. During the diagnosis process, it is necessary to clarify the condition and provide treatment as soon as possible to avoid delaying the "golden treatment time." Therefore, it is necessary to design a reliable intracranial hemorrhage detection device to accurately assess the patient's condition.

[0004] Currently, intracranial hemorrhage detection devices typically use antennas to transmit microwave signals to and receive microwave signals from the patient's head, in order to determine the extent of intracranial hemorrhage based on these signals. However, existing antennas still have many shortcomings. Summary of the Invention

[0005] A brief overview of this application is provided below to offer a basic understanding of certain aspects thereof. It should be understood that this overview is not an exhaustive summary of the application. It is not intended to identify key or essential parts of the application, nor is it intended to limit its scope. Its purpose is merely to present certain concepts in a simplified form as a prelude to the more detailed description that follows.

[0006] In a first aspect, embodiments of this application provide an antenna, including: a housing, a grounding element, a first radiating element, and a second radiating element. The housing forms a receiving cavity with an opening on one side; the first radiating element and the second radiating element are disposed at the opening of the receiving cavity and electrically connected to the housing via the grounding element for grounding; the first radiating element is configured to receive and transmit low-frequency microwave signals through the opening of the receiving cavity, and the second radiating element is configured to receive and transmit high-frequency microwave signals through the opening of the receiving cavity under the coupling effect of the first radiating element.

[0007] The embodiments of this application, by setting a grounding element, enable the first and second radiating units to be electrically connected to the housing through the grounding element for grounding, and respectively transmit low-frequency microwave signals and high-frequency microwave signals, which can expand the frequency band of microwave signals received and transmitted by the antenna, thereby improving the accuracy of intracranial hemorrhage detection using microwaves; and the antenna with this structure is small in size, making it suitable for intracranial hemorrhage detection.

[0008] Secondly, embodiments of this application provide an intracranial hemorrhage detection device, which includes the antenna provided in the first aspect of this application.

[0009] These and other advantages of this application will become more apparent from the following detailed description of preferred embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0010] To further illustrate the above and other advantages and features of this application, the specific embodiments of this application will be described in more detail below with reference to the accompanying drawings. The drawings, together with the following detailed description, are included in and form a part of this specification. Elements having the same function and structure are indicated by the same reference numerals. It should be understood that these drawings only depict typical examples of this application and should not be considered as limiting the scope of this application.

[0011] Figure 1 A schematic diagram of the antenna structure according to an embodiment of this application is shown; Figure 2 A perspective view of an antenna according to an embodiment of this application is shown; Figure 3 An exploded view of an antenna according to an embodiment of this application is shown; Figure 4 Another exploded view of an antenna according to an embodiment of this application is shown; Figure 5 A partially exploded view of an antenna according to an embodiment of this application is shown; Figure 6 The diagram shows the reflection coefficient of the antenna as a function of frequency for recesses of 0 mm, 1 mm, 2 mm, and 3 mm, respectively, according to embodiments of this application. Figure 7 A surface current density diagram of an antenna according to an embodiment of this application is shown; Figure 8 The diagram illustrates the variation of the antenna's reflection coefficient with frequency for antennas with protrusion heights of 0mm, 1.5mm, and 3mm according to embodiments of this application. Figure 9 The reflection coefficient of antennas with no radiating cover and antennas with radiating covers of different materials according to embodiments of this application varies with frequency. Figure 10 The diagram illustrates the variation of the antenna's reflection coefficient with frequency for different distances between the grounding element and the side wall of the housing body according to embodiments of this application, namely 2.5 mm, 1.5 mm, 0.5 mm, and 0 mm. Figure 11 The reflection coefficient of an antenna according to an embodiment of this application varies with frequency; Figure 12 The near-field radiation pattern of the antenna E-plane 80mm according to an embodiment of this application is shown; Figure 13The near-field radiation pattern of the antenna H-plane 80mm according to an embodiment of this application is shown; Figure 14 A schematic diagram of the structure of an intracranial hemorrhage detection device according to an embodiment of this application is shown, in which the front shell is omitted; Figure 15 A schematic diagram of the structure of an intracranial hemorrhage detection device according to an embodiment of this application is shown, in which the housing and medium container are omitted; Figure 16 This shows from another perspective Figure 15 A schematic diagram of the intracranial hemorrhage detection device shown. Figure 17 This shows from yet another perspective. Figure 15 A schematic diagram of the intracranial hemorrhage detection device shown. Figure 18 A schematic diagram of an intracranial hemorrhage detection device according to an embodiment of this application is shown, with some components such as the processor further omitted from the diagram; Figure 19 An exploded view of an intracranial hemorrhage detection device according to an embodiment of this application is shown; Figure 20 A schematic diagram of the structure of the receiving portion of the intracranial hemorrhage detection device according to an embodiment of this application is shown; Figure 21 This shows from another perspective Figure 20 The diagram shows the structure of the receiving part; Figure 22 A schematic diagram of the structure of the flexible headgear of the intracranial hemorrhage detection device according to an embodiment of this application is shown.

[0012] It should be noted that the accompanying drawings are not necessarily drawn to scale, but are shown only in a schematic manner without affecting the reader's understanding.

[0013] Explanation of reference numerals in the attached figures: 10. Antenna; 101. Transmission wire; 102. Housing; 1021. Housing body; 1022. Connecting part; 1023. Conductive part; 103. Grounding component; 104. First radiating element; 1041. First radiating body; 1042. First end; 1043. Recessed part; 105. Second radiating element; 1051. Second radiating body; 1052. Enhanced coupling mating part; 106. Radiating cover; 107. Dielectric layer; 108. First grounding wire; 109. Second grounding wire; 151. Wire connector; 191. Vector network analyzer; 1910. Analyzer heat dissipation hole; 192. Port expansion component; 193. Signal transmission line; 1931. First horizontal extension section; 1932. Bent connection section; 20. Receiving part; 21. Peripheral part; 211. Plane; 2110. Opening; 212. Peripheral mounting hole; 22. End; 23. Antenna mounting part; 230. Mounting groove; 231. Extension part; 232. Connector; 2320. Clearance hole; 24. Head cover mounting part; 240. Groove; 241. Guide groove; 242. Inner liner positioning part; 250. Connecting plate; 251. First connecting post; 252. Second connecting post; 253. Reinforcing rib; 26. Neck support part; 27. Housing connector; 271. Housing clearance groove; 28. Liquid inlet / outlet positioning part; 30. Flexible head cover; 301. Head cover body; 31. Liquid inlet / outlet connector; 32. Vent connector; 33. First head cover mounting component; 331. Guide component; 332. Head cover mounting hole; 34. Second head cover mounting component; 40. Dielectric charging / discharging and pressurizing assembly; 41. Dielectric container; 42. Drive unit; 43. Inlet / outlet pipeline; 44. Exhaust pipeline; 46. Pressure measuring device; 47. Valve; 48. Pressure measuring pipeline; 50. Lining; 51. Lining positioning and mating part; 52. Lining clearance groove; 61. Base; 611. Bottom cover; 612. Drain hole; 613. Heat dissipation hole; 621. First mounting component; 622. Second mounting component; 623. Third mounting component; 624. Auxiliary mounting component; 6240. Mounting plate; 6241. Mounting feet; 625. Fourth mounting component; 626. Reinforcing component; 641. Shell heat dissipation hole; 642. Main shell; 6421. Main shell heat dissipation hole; 643. Front shell; 644. Rear cover; 645. Pillow; 646. Handle; 65. Processor; 652. USB splitter; 66. Fan; 67. Operating component; 68. Communication interface. Detailed Implementation

[0014] Exemplary embodiments of this application will be described below with reference to the accompanying drawings. For clarity and brevity, not all features of actual implementations are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the development of any such actual embodiment to achieve the developer's specific goals, such as complying with constraints related to the system and business, and these constraints may vary depending on the implementation. Furthermore, it should be understood that while development work can be very complex and time-consuming, such development work is merely a routine task for those skilled in the art who benefit from the content of this application.

[0015] It should also be noted that, in order to avoid obscuring this application with unnecessary details, only the equipment structure and / or processing steps closely related to the solution according to this application are shown in the accompanying drawings, while other details that are not closely related to this application are omitted.

[0016] It should be noted that, unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning as understood by a person with ordinary skills in the field to which this application pertains.

[0017] In the description of the embodiments of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0018] The dielectric constants of different tissues in the human body (muscle, fat, body fluid, blood stasis, bleeding area) respond differently at different frequencies. In related technologies, the microwave signals transmitted or received by the antenna of the intracranial hemorrhage detection device are single-frequency bands, which affects the accuracy of the intracranial hemorrhage detection device and thus affects the timely and accurate judgment of the patient's condition in practical applications.

[0019] Based on this, embodiments of this application provide an antenna suitable for an intracranial hemorrhage detection device.

[0020] See Figures 1 to 4 , Figure 1 A schematic diagram of the antenna structure according to an embodiment of this application is shown; Figure 2 A perspective view of an antenna according to an embodiment of this application is shown; Figure 3 An exploded view of an antenna according to an embodiment of this application is shown; Figure 4 Another exploded view of an antenna according to an embodiment of this application is shown; the antenna 10 provided in this embodiment may include: a housing 102, a grounding element 103, a first radiating element 104, and a second radiating element 105. The housing 102 forms a receiving cavity with an opening on one side; the first radiating element 104 and the second radiating element 105 are disposed at the opening of the receiving cavity and are electrically connected to the housing 102 via the grounding element 103 for grounding. The first radiating element 104 is configured to receive and transmit low-frequency microwave signals through the opening of the receiving cavity, and the second radiating element 105 is configured to receive and transmit high-frequency microwave signals through the opening of the receiving cavity under the coupling effect of the first radiating element 104.

[0021] In the embodiments of this application, by setting a grounding element 103, the first radiation unit 104 and the second radiation unit 105 can be electrically connected to the housing 102 through the grounding element 103 to be grounded, and respectively transmit low-frequency microwave signals and high-frequency microwave signals, which can extend the operating frequency band of the microwave signals received and transmitted by the antenna 10, thereby improving the accuracy of intracranial hemorrhage detection using microwaves; and the antenna with this structure is small in size and suitable for intracranial hemorrhage detection.

[0022] Figure 11 The reflection coefficient of the antenna according to an embodiment of this application varies with frequency. Figure 12The near-field radiation pattern of the antenna E-plane 80mm according to an embodiment of this application is shown. Figure 13 The near-field radiation pattern of the antenna H-plane 80mm according to an embodiment of this application is shown; according to Figure 11 It can be seen that the antenna in the embodiment of this application has a low reflection coefficient. According to... Figure 12 and Figure 13 As can be seen from the variation of the near-field electric field intensity with angle, the antenna of the embodiment of this application is directional radiating.

[0023] In some embodiments, the antenna 10 further includes a transmission wire 101 for transmitting microwave signals to the first radiating element 104 or receiving microwave signals from the first radiating element 104 and the second radiating element 105, so as to transmit the signals received by the antenna 10 outward or send signals to the antenna 10.

[0024] In some embodiments, the grounding element 103 is disposed inside the housing 102 and is electrically connected to the housing 102.

[0025] In some embodiments, the first radiating element 104 is disposed around the second radiating element 105 to enhance the coupling effect of the first radiating element 104 to the second radiating element 105.

[0026] In some embodiments, the first radiating unit 104 is configured to extend in a tortuous manner, and the second radiating unit 105 is configured to cooperate with the first radiating unit 104 so that the operating frequency of the first radiating unit 104 is shifted to a lower frequency, while ensuring the coupling effect of the first radiating unit 104 to the second radiating unit 105.

[0027] See Figure 5 , Figure 5 A partially exploded view of an antenna according to an embodiment of this application is shown. In some embodiments, the first radiating element 104 may include a first radiating body 1041 and two spaced-apart first ends 1042. The first radiating body 1041 is used to transmit low-frequency microwave signals and couple with a second radiating element 105. The two first ends 1042 are connected to both ends of the first radiating body 1041 and are used to connect the transmission wire 101 and the grounding member 103, respectively. The two first ends 1042 and the first radiating body 1041 together form an open ring structure, and the second radiating element 105 is disposed inside the ring structure. The first radiating body 1041 is configured to extend in a tortuous manner. In such embodiments, it is more advantageous to reduce the operating frequency of the first radiating element 104.

[0028] See Figure 7 , Figure 7 A surface current density map of an antenna according to an embodiment of this application is shown; according to Figure 7As can be seen, the first radiating element 1041 of the antenna 10 in this embodiment of the application extends the current path and the antenna frequency shifts to a lower frequency.

[0029] In some embodiments, one first end 1042 is electrically connected to the transmission wire 101, and the other first end 1042 is electrically connected to the grounding member 103 via the second grounding wire 109. The transmission wire 101 can pass through the bottom wall of the housing 102 and extend from the inside of the grounding member 103 to be electrically connected to the corresponding first end 1042, while ensuring insulation from the grounding member 103. This configuration enables the formation of a closed standing wave loop antenna, generating magnetic dipole radiation, making the maximum radiation direction perpendicular to the surface of the first radiating element 104, while reducing impedance.

[0030] In some embodiments, the radial inner radius of the first radiating body 1041 is smaller than the radial inner radius of the two first end portions 1042, and the radial outer radius of the first radiating body 1041 is larger than the radial outer radius of the two first end portions 1042; the first radiating body 1041 is recessed radially outward from its radial inner surface to form a plurality of recesses 1043. In such an embodiment, the path of microwave signal transmission can be extended, and the coupling effect of the first radiating body 1041 to the second radiating unit 105 can be guaranteed.

[0031] Figure 6 The diagram illustrates the frequency variation of the antenna's reflection coefficient when the depth of the recess 1043 in an antenna according to an embodiment of this application is 0 mm, 1 mm, 2 mm, and 3 mm. Figure 6 It can be seen that when the depth of the recess 1043 is 0mm, 1mm, 2mm, and 3mm, the lowest operating frequency of the antenna 10 corresponds to approximately 1.18GHz, 1.14GHz, 1.03GHz, and 0.97GHz, respectively. Therefore, it is evident that as the depth of the recess 1043 increases, the lowest operating frequency of the antenna 10 decreases. Combined with... Figure 7 The surface current density map of the antenna according to an embodiment of this application further verifies that the first radiating element 1041 of the antenna 10 extends the current path, causing the antenna frequency to shift to a lower frequency.

[0032] In some embodiments, the second radiating element 105 may include a second radiating body 1051 and a plurality of enhanced coupling mating parts 1052 connected to the second radiating body 1051. The enhanced coupling mating parts 1052 are used to cooperate with the first radiating element 104 to enhance the coupling effect with the first radiating element 104, increase the resonant point, provide capacitive loading to reduce the antenna Q value, compensate for the outer ring inductive impedance to achieve 50Ω impedance matching, stabilize the current distribution and enhance the effect of normal radiation, and can broaden the antenna impedance bandwidth.

[0033] In some embodiments, the second radiating body 1051 is electrically connected to the grounding member 103 via the first grounding wire 108.

[0034] In some embodiments, the enhanced coupling mating portion 1052 is a plurality of protrusions extending from the surface of the second radiating body 1051 toward a plurality of recesses 1043 of the first radiating body 1041. The mating of the protrusions with the recesses 1043 enhances the coupling between the second radiating unit 105 and the first radiating unit 104. In the embodiments of this application, the protrusions of the second radiating unit 105 and the second radiating body 1051 form a gap coupling with the outer ring, which further enhances the capacitive coupling strength between the first radiating unit 104 and the second radiating unit 105, finely adjusts the resonant frequency and impedance matching characteristics, further expands the antenna's operating bandwidth, and simultaneously optimizes the current distribution and radiation pattern, improving the overall radiation performance and operational stability of the antenna.

[0035] Figure 8 The diagram illustrates the variation of the antenna's reflection coefficient with frequency for antennas with protrusion heights of 0mm, 1.5mm, and 3mm, according to embodiments of this application. Figure 8 It can be seen that when the height of the protrusion is 0mm, 1.5mm, and 3mm, the corresponding operating frequencies are approximately 0.99-1.89GHz, 1.02-1.83GHz, and 1.55GHz-1.91GHz, respectively. Therefore, it is evident that the operating bandwidth of antenna 10 increases with the increase of the protrusion height. The antenna's reflection coefficient is optimal when the protrusion height is 3mm.

[0036] In some embodiments, the recess 1043 forms a groove, the opening size of which is smaller than the bottom wall size; correspondingly, the protrusion enters the groove, and the size by which the protrusion connects to the second radiating body 1051 is smaller than the size of the side of the protrusion facing the bottom wall of the groove. This configuration optimizes the current distribution, enables tuning of the resonant frequency and impedance, and allows the antenna to have a low reflection coefficient over a wide bandwidth.

[0037] In some embodiments, both the first radiating unit 104 and the second radiating unit 105 are sheet-like structures.

[0038] In some embodiments, the second radiating body 1051 is a circular structure, which is convenient for PCB manufacturing.

[0039] In some embodiments, the antenna 10 may further include: a dielectric layer 107 connected to the housing 102; a grounding element 103 disposed on the side surface of the dielectric layer 107 facing the receiving cavity; and a first radiating element 104 and a second radiating element 105 disposed on the other side surface of the dielectric layer 107 opposite to the receiving cavity. In such embodiments, by providing the dielectric layer 107, the first radiating element 104, the second radiating element 105, and the grounding element 103 can be fabricated on the dielectric layer 107 using a printed circuit board (PCB) process. The dielectric parameters of the dielectric layer 107 affect the antenna performance. In some embodiments, the dielectric parameters of the dielectric layer 107 are FR4, dielectric constant 4.4, and loss tangent 0.02, which is beneficial for improving antenna performance.

[0040] In some embodiments, the antenna 10 may further include: a radiating cover 106 disposed on the side of the dielectric layer 107 opposite to the grounding member 103, for sealing the opening of the receiving cavity and configured to allow microwave signals to pass through. Human head tissues (brain tissue, blood, cerebrospinal fluid, etc.) have a relatively high permittivity (approximately 40-80), while the antenna uses an FR4 dielectric substrate (… (≈4.4), the large difference in dielectric constant between the two leads to severe impedance mismatch, causing most of the electromagnetic waves to be reflected, making it difficult to effectively penetrate into the brain and carry the scattered information from the hemorrhage area. By setting the radiation cover 106, a dielectric constant step transition is formed between the low-dielectric antenna substrate and the high-dielectric human head, reducing interface reflection and improving the transmission efficiency of electromagnetic waves from the antenna to the brain tissue.

[0041] It is easy to understand that the "opening plane" through which the antenna radiates electromagnetic waves is called the antenna's radiating port surface. In some embodiments, the antenna's radiating port surface is the outer end face of the radiating cover 106.

[0042] In some embodiments, the radiating cover 106 may be zirconia ceramic.

[0043] Figure 9 The reflection coefficients of antennas with and without radiating caps of different materials according to embodiments of this application are shown. Figure 9 It can be seen that the antenna's reflection coefficient is optimal when the radiating cap 106 is made of zirconia. Zirconia ceramic has a moderate dielectric constant (usually about 20-30), which is beneficial for forming a dielectric constant step transition between the low-dielectric antenna substrate and the high-dielectric human head, reducing interface reflection and improving the transmission efficiency of electromagnetic waves from the antenna to the brain tissue.

[0044] See Figure 4In some embodiments, the housing 102 may include a housing body 1021, a connecting portion 1022, and a conductive portion 1023; the housing body 1021 forms a receiving cavity; the connecting portion 1022 is disposed at the corner of the receiving cavity, and the dielectric layer 107 is connected to the housing body 1021 through the connecting portion 1022; the conductive portion 1023 is connected to the bottom wall of the housing body 1021, and the grounding member 103 is electrically connected to the housing body 1021 through the conductive portion 1023; a predetermined gap exists between the grounding member 103 and the side wall of the housing body 1021. The inventors of this application have discovered that the predetermined gap between the grounding member 103 and the side wall of the housing body 1021 is beneficial for optimizing impedance matching and reflection coefficient.

[0045] The inventors of this application discovered that changing the gap between the grounding component 103 and the side wall of the housing body 1021 affects the operating bandwidth of the antenna. Figure 10 The diagram illustrates the variation of the antenna's reflection coefficient with frequency for distances of 2.5 mm, 1.5 mm, 0.5 mm, and 0 mm between the grounding element 103 and the sidewall of the housing body 1021 according to embodiments of this application. Figure 10 It can be seen that when the distance between the grounding component 103 and the side wall of the housing 1021 is 2.5mm, 1.5mm, 0.5mm, and 0mm, the corresponding operating frequencies of the antenna are 1-1.88GHz, 1.02-1.84GHz, 1.39-1.91GHz, and 1.55-1.92GHz, respectively. Therefore, the closer the grounding component 103 is to the inner wall of the housing 102, the smaller the antenna's operating bandwidth. When the gap between the grounding component 103 and the side wall of the housing 1021 is 1.5mm, the antenna's operating bandwidth is more suitable for the intracranial hemorrhage detection device.

[0046] In some embodiments, the grounding element 103 is a metal sheet. The housing 102 is a metal housing.

[0047] In some embodiments, the antenna 10 may further include a wire connector for detachably communicating with the transmission wire 101 and the signal transmission line, so as to facilitate the assembly and disassembly of the antenna 10 and the signal transmission line.

[0048] Embodiments of this application also provide an intracranial hemorrhage detection device, which includes the antenna 10 provided in any embodiment of this application.

[0049] See Figures 14 to 16 , Figure 14 A schematic diagram of the intracranial hemorrhage detection device according to an embodiment of this application is shown, with the front shell omitted in the figure; Figure 15 It shows Figure 14 The diagram shows a structural schematic of an intracranial hemorrhage detection device, omitting the housing and media container components. Figure 16 This shows from another perspective Figure 15The intracranial hemorrhage detection device shown in this application may include: a receiving portion 20, a vector network analyzer 191, and a port extension 192; the receiving portion 20 forms a receiving space with an opening on one side for receiving a patient's brain; the vector network analyzer 191 is configured to send microwave signals to the port extension 192 and receive microwave signals from the port extension 192, and analyze the received microwave signals; the port extension 192 is configured to extend the port of the vector network analyzer 191, receive microwave signals sent by the vector network analyzer 191, transmit the microwave signals to an antenna 10, and receive corresponding microwave signals from another antenna 10 and transmit them to the vector network analyzer 191; the antenna 10 is disposed in the receiving portion 20 and is configured to receive microwave signals from the port extension 192 and transmit microwave signals to the receiving space; or receive microwave signals transmitted by another antenna 10 from the receiving space and transmit them to the port extension 192. In the embodiments of this application, by setting a port extension 192, the vector network analyzer 191 can be connected to multiple pairs of antennas 10 through the port extension 192 to transmit and receive microwave signals, thereby increasing the number of antennas 10 and improving the accuracy of detection.

[0050] In some embodiments, the accommodating space has an opening on one side to facilitate the entry of the human brain.

[0051] In some embodiments, the intracranial hemorrhage detection device may further include a flexible headgear 30 and a dielectric filling and discharging pressurization assembly 40. The flexible headgear 30 is disposed in a receiving space and configured to be used to fill liquid dielectric and deformable upon pressurization; the dielectric filling and discharging pressurization assembly 40 is configured to fill the flexible headgear 30 with dielectric or discharge the dielectric from the flexible headgear 30, and to pressurize the flexible headgear 30 so that the flexible headgear 30 can expand to fit the patient's brain.

[0052] The embodiments of this application, by setting a flexible headgear 30, allow the use of a dielectric filling and discharging pressurizing component 40 to fill the flexible headgear 30 with dielectric material after the patient's brain enters the receiving part 20, and to pressurize the flexible headgear 30 so that it can expand and fit the patient's brain. This allows it to adapt to the shape of different patients' brains. Relying on the flexible deformation and fluid adaptive properties of the flexible headgear 30, it closely fits the contour of the patient's brain, achieving a gapless fit and wrapping, which helps to improve the transmission efficiency of microwave signals and thus improve the quality of transmitted or received microwave signals.

[0053] In some embodiments, the antenna 10 may be disposed on the outside of the flexible headgear 30 in the receiving portion 20, and the antenna 10 may be configured to receive microwave signals from the port extension member 192 and transmit microwave signals to the flexible headgear 30; or receive microwave signals transmitted by another antenna 10 from the flexible headgear 30 and transmit them to the port extension member 192.

[0054] See Figure 20 and Figure 21 , Figure 20 A schematic diagram of the structure of the receiving portion of the intracranial hemorrhage detection device according to an embodiment of this application is shown; Figure 21 This shows from another perspective Figure 20 The schematic diagram of the receiving part is shown. In some embodiments, the receiving part 20 may include: a peripheral part 21, an end part 22, a plurality of antenna mounting parts 23 and a head cover mounting part 24. The peripheral part 21 and the end part 22 are connected to form a receiving space. The head cover mounting part 24 is used to install the flexible head cover 30 in the receiving space. Each antenna mounting part 23 is used to mount an antenna 10 facing the flexible head cover 30 on the peripheral part 21.

[0055] In the embodiments of this application, the flexible headgear 30 can be installed in the receiving space by providing the headgear mounting part 24, and the antenna 10 can be installed on the periphery 21 facing the flexible headgear 30 by providing the antenna mounting part 23, thereby simplifying the assembly of the intracranial hemorrhage detection device. Furthermore, the antenna 10 can directly transmit microwave signals to and receive microwave signals from the flexible headgear 30, thereby improving the transmission efficiency of microwave signals through the flexible headgear 30.

[0056] In some embodiments, the antenna mounting portion 23 is disposed on the periphery 21.

[0057] In some embodiments, the headgear mounting portion 24 is connected to the end portion 22 on the inner side of the periphery portion 21.

[0058] In some embodiments, the antenna mounting portion 23 forms a plurality of mounting slots 230, which communicate with the receiving space; the antenna 10 is mounted in each mounting slot 230. Since the mounting slots 230 communicate with the receiving space, the antenna 10 can directly face the flexible headgear 30, so that after the flexible headgear 30 is pressurized and expanded, it can simultaneously fit with the patient's skull and the antenna 10, thereby improving the transmission efficiency of microwave signals.

[0059] In some embodiments, see Figure 20 The surface of the peripheral portion 21 facing the flexible head cover 30 includes a plurality of planes 211 connected circumferentially. Each plane 211 forms an opening 2110 communicating with the mounting groove 230. The radiating port surface of the antenna 10 is flush with the plane 211 containing the opening 2110. By making the plane 211 flush with the radiating port surface of the corresponding antenna 10, it is beneficial to reduce microwave signal loss and improve the microwave signal reception quality.

[0060] In some embodiments, the antenna mounting portion 23 includes an extension portion 231 extending outward from the periphery of the opening 2110 and a connector 232 connected to the extension portion 231. The antenna 10 is connected to the connector 232, and the connector 232 forms a clearance hole 2320 for the wire connector 151 of the antenna 10 to pass through. Since the extension portion 231 extends outward from the periphery of the opening 2110, the antenna 10 can be mounted in the mounting groove 230 on the inner side of the periphery 21 without obstructing the radiating port surface of the antenna 10, thereby affecting the transmission and reception of microwave signals. At the same time, by forming a clearance hole 2320 in the connector 232, the wire connector 151 of the antenna 10 can extend to the outside through the clearance hole 2320, thereby realizing the transmission of microwave signals.

[0061] In some embodiments, the headgear mounting portion 24, the peripheral portion 21, and the end portion 22 together form a groove 240. The flexible headgear 30 can be inserted into the groove 240 formed by the receiving portion 20, and the headgear body 301 of the flexible headgear 30 can cover the groove 240. By enabling the flexible headgear 30 to be inserted into the groove 240 formed by the receiving portion 20, the flexible headgear 30 is prevented from detaching from the receiving portion 20. At the same time, since the headgear body 301 can cover the groove 240, the aesthetics are improved.

[0062] In some embodiments, the receiving portion 20 may further include an inlet / outlet positioning member 28, disposed at the bottom of the peripheral portion 21 and located between the antenna mounting portion 23 and the end portion 22, and extending to the bottom of the end portion 22; the inlet / outlet connector 31 of the flexible head cover 30 extends to the outside through the inlet / outlet positioning member 28. By providing the inlet / outlet positioning member 28 to position the inlet / outlet connector 31, displacement of the inlet / outlet connector 31 is prevented, and since the inlet / outlet positioning member 28 is located between the antenna mounting portion 23 and the end portion 22, it does not affect the installation of the antenna 10.

[0063] In some embodiments, the receiving portion 20 may further include a housing connector 27, which is detachably connected to the front housing 643 of the intracranial hemorrhage detection device to press the flexible headgear 30 between the front housing 643 and the housing connector 27 to prevent the flexible headgear 30 from rotating and falling off.

[0064] See Figure 19 and Figure 22 , Figure 19 An exploded view of an intracranial hemorrhage detection device according to an embodiment of this application is shown; Figure 22A schematic diagram of the structure of a flexible headgear for an intracranial hemorrhage detection device according to an embodiment of this application is shown. In some embodiments, the flexible headgear 30 may include: a headgear body 301 and a headgear mounting fitting part connected to the headgear body 301; the headgear body 301 is configured to be filled with a liquid dielectric and to deform under pressure so that the patient's brain can enter the headgear body 301 and fit against the patient's brain after the headgear body 301 is deformed; the liquid dielectric is configured to match the impedance of the antenna 10 and the human brain tissue; the headgear mounting fitting part is configured to cooperate with the receiving part 20 to mount the headgear body 301 onto the receiving part 20. The embodiments of this application, by providing a headgear body 301 and a headgear mounting fitting part connected to the headgear body 301, can fill the headgear body 301 with a liquid dielectric that facilitates impedance matching and deform it inward by applying pressure, allowing the patient's brain to enter the headgear body 301 and fit snugly against the patient's brain after deformation, thereby improving the transmission efficiency of microwave signals; and the headgear mounting fitting part can be configured to cooperate with the receiving part 20, so that the headgear body 301 can be installed in the receiving part 20, preventing the headgear body 301 from moving and affecting the transmission efficiency of microwave signals.

[0065] In some embodiments, the headgear mounting mating portion may include a first headgear mounting member 33, which is capable of being inserted into a groove 240 formed in the receiving portion 20. By enabling the first headgear mounting member 33 to be inserted into the groove 240 formed in the receiving portion 20, the flexible headgear 30 is prevented from detaching from the receiving portion 20.

[0066] In some embodiments, the headgear mounting portion 24 further forms a guide groove 241, and the headgear mounting mating portion may further include a guide member 331 disposed on the first headgear mounting member 33. The guide member 331 is configured to slide in the guide groove 241 of the receiving portion 20 so that the first headgear mounting member 33 can be embedded in the groove 240. Since both the headgear body 301 and the first headgear mounting member 33 are made of flexible materials, it is difficult to directly embed the first headgear mounting member 33 into the groove 240. By providing the guide member 331 to cooperate with the guide groove 241, and by pushing the guide member 331 to slide in the guide groove 241, the first headgear mounting member 33 can be embedded into the groove 240.

[0067] In some embodiments, the guide 331 protrudes from the first headgear mounting 33 to facilitate the application of force.

[0068] In some embodiments, the first headgear mounting component 33 cooperates with the headgear body 301 to prevent the headgear body 301 from moving.

[0069] In some embodiments, the headgear body 301 may abut against the headgear mounting portion 24 of the receiving portion 20 to prevent the headgear body 301 from moving toward the end portion 22, thereby avoiding interference with the detection of intracranial hemorrhage.

[0070] In some embodiments, the headgear body 301 is bonded to the first headgear mounting member 33.

[0071] In some embodiments, the first headgear mounting member 33 further forms a headgear mounting hole 332, and the periphery 21 is provided with a periphery mounting hole 212. By passing a positioning member through the headgear mounting hole 332 and the periphery mounting hole 212 of the receiving portion 20, the first headgear mounting member 33 is fixed to the receiving portion 20. In such an embodiment, by installing the first headgear mounting member 33 into the receiving portion 20 through the positioning member, both the fixation of the flexible headgear 30 and the ease of replacing the flexible headgear 30 can be ensured.

[0072] In some embodiments, the positioning element may be a positioning pin.

[0073] In some embodiments, the peripheral mounting hole 212 corresponds to the guide groove 241. By configuring the guide member 331 to slide in the guide groove 241 of the receiving portion 20, the peripheral mounting hole 212 can be aligned with the head cover mounting hole 332 formed by the first head cover mounting member 33 of the flexible head cover 30, thereby facilitating the replacement of the flexible head cover 30.

[0074] In some embodiments, the number of headgear mounting holes 332 and guide members 331 are the same, and the position of each headgear mounting hole 332 is spaced apart from the corresponding guide member 331 along the extending direction of the first headgear mounting member 33; when the guide member 331 slides to the bottom in the guide groove 241, the headgear mounting hole 332 can be aligned with the peripheral mounting hole 212 of the receiving part 20, thereby simplifying the assembly of the first headgear mounting member 33 and the receiving part 20.

[0075] In some embodiments, the guide 331 is located at the end of the first headgear mounting member 33 away from the headgear body 301, and the guide groove 241 and the recess 240 have the same depth. When the guide 331 slides to the bottom in the guide groove 241, the first headgear mounting member 33 also reaches the bottom of the recess 240, so as to facilitate the assembly of the first headgear mounting member 33 with the receiving part 20.

[0076] In some embodiments, the headgear mounting mating part further includes a second headgear mounting member 34, which is connected to the headgear body 301 on the side away from the first headgear mounting member 33. When the front shell 643 of the intracranial hemorrhage detection device is detachably connected to the receiving part 20, the second headgear mounting member 34 can be pressed to prevent the flexible headgear 30 from rotating and falling off.

[0077] In some embodiments, the flexible headgear 30 may further include: a liquid inlet / outlet connector 31, in fluid communication with the headgear body 301, for supplying liquid dielectric to and from the headgear body 301. The liquid inlet / outlet connector 31 is connected to the bottom of the headgear body 301. In such an embodiment, liquid dielectric can be supplied to and discharged from the headgear body 301 through the liquid inlet / outlet connector 31.

[0078] In some embodiments, the outer surface of the headgear body 301 is flush with the outer surface of the first headgear mounting member 33; the thickness of the first headgear mounting member 33 is less than the thickness of the headgear body 301; the inlet / outlet connector 31 is connected to the side of the bottom of the headgear body 301 and extends inside the first headgear mounting member 33 toward the side away from the second headgear mounting member 34. In such an embodiment, it is beneficial for the headgear body 301 and the first headgear mounting member 33 to fit snugly against the inner wall of the receiving portion 20, while the inlet / outlet connector 31 can be extended outward without occupying the space at the bottom of the receiving portion 20 for mounting the antenna 10.

[0079] In some embodiments, the flexible headgear 30 may further include an exhaust connector 32, disposed on the top of the headgear body 301, for venting air outward when liquid is filled into the headgear body 301 using the liquid inlet / outlet connector 31, and for allowing liquid to flow out from the exhaust connector 32 when the headgear body 301 is filled with liquid. By providing the exhaust connector 32 on the top of the headgear body 301, liquid can be smoothly filled into the headgear body 301 through the liquid inlet / outlet connector 31 by venting air outward, and the headgear body 301 can be filled with liquid, thereby improving the transmission efficiency of microwave signals.

[0080] In some embodiments, a housing relief groove 271 is formed on the top of the housing connector 27 to allow the exhaust connector 32 of the flexible headgear 30 to pass through. The exhaust connector 32 extends beyond the receiving portion 20 through the housing relief groove 271 and then extends along the periphery 21 toward the end portion 22. The housing relief groove 271 can limit the exhaust connector 32 to prevent it from moving or shifting, ensuring that the exhaust connector 32 is in the highest position, thereby preventing air residue in the headgear body 301.

[0081] In some embodiments, the flexible headgear 30, when filled with liquid dielectric, is not circular to match the shape of the patient's skull. Specifically, when the flexible headgear 30 is installed in the receiving portion 20, the length of the flexible headgear 30 in the height direction is greater than its length in the horizontal direction.

[0082] In some embodiments, the dielectric filling and pressurizing assembly 40 may include: a dielectric container 41, an inlet / outlet liquid line 43, an outlet liquid line 44, and a drive member 42; the dielectric container 41 is used to contain liquid dielectric; the drive member 42 is used to drive the liquid dielectric to flow between the dielectric container 41 and the flexible headgear 30 via the inlet / outlet liquid line 43, and to pressurize the flexible headgear 30 through the inlet / outlet liquid line 43 after the flexible headgear 30 is filled with liquid dielectric, so that the flexible headgear 30 expands and fits against the skull; when the drive member 42 drives the liquid dielectric to flow into the flexible headgear 30, the outlet liquid line 44 is used to discharge gas from the flexible headgear 30; when the drive member 42 pressurizes the flexible headgear 30, the outlet liquid line 44 is disconnected. In such an embodiment, liquid can be smoothly introduced and pressurized into the flexible headgear 30.

[0083] In some embodiments, the drive element 42 is a pump.

[0084] In some embodiments, the inlet / outlet lines 43 connect the inlet / outlet connectors 31 of the flexible head sleeve 30 to the medium container 41, and the vent line 44 connects the vent connector 32 of the flexible head sleeve 30 to the medium container 41. The dielectric charging / discharging pressurization assembly 40 may further include a liquid detection element, a pressure measuring element 46, and a valve 47. The liquid detection element detects liquid in the vent line 44 to determine the filling amount of the flexible head sleeve 30; the pressure measuring element 46 measures the pressure within the flexible head sleeve 30; the valve 47 is disposed in the vent line 44 and is configured to disconnect the vent line 44 when the liquid detection element detects liquid in the vent line 44, thereby pressurizing the flexible head sleeve 30 using the drive element 42. In such an embodiment, since the vent connector 32 is located at the top, when the flexible head sleeve 30 is filled with dielectric, the dielectric enters the vent line 44, and when the liquid detection element detects the presence of liquid in the vent line 44, it indicates that the flexible head sleeve 30 is filled with dielectric. At this point, after disconnecting the exhaust pipe 44 via valve 47, pressure can be applied to the flexible headgear 30 using the drive unit 42, causing the flexible headgear 30 to expand and fit against the brain. The pressure measuring unit 46 is used to measure the pressure inside the flexible headgear 30, so that the drive unit 42 can be stopped from continuing to apply pressure based on the pressure value measured by the pressure measuring unit 46, ensuring that the pressure on the patient's brain is within an appropriate range.

[0085] In some embodiments, the liquid detection element may be disposed in the exhaust pipe 44.

[0086] In some embodiments, the dielectric charging and discharging pressurization assembly 40 may further include: a pressure measuring line 48 in fluid communication with the exhaust line 44 upstream of the valve 47; and a pressure measuring element 46 disposed in the pressure measuring line 48. By providing the pressure measuring line 48, the pressure inside the flexible head sleeve 30 can be measured when the exhaust line 44 is disconnected from the medium container 41.

[0087] In some embodiments, the detection device may further include: a liner 50 disposed radially inside the headgear mounting portion 24, the headgear mounting portion 24 being further configured to prevent the liner 50 from detaching. The liner 50 improves the aesthetics of the interior of the receiving portion 20.

[0088] In some embodiments, see Figure 20 The headgear mounting part 24 forms an inner lining positioning element 242, see [reference]. Figure 19 The inner liner 50 forms an inner liner positioning mating part 51 that mates with the inner liner positioning member 242, so that the inner liner 50 is positioned by the mating of the inner liner positioning member 242 and the inner liner positioning mating part 51, and the inner liner 50 is prevented from detaching.

[0089] In some embodiments, the liner positioning fitting portion 51 is a positioning groove extending along the extension direction of the peripheral portion 21; the liner positioning member 242 is a protrusion extending along the extension direction of the peripheral portion 21, and the positioning groove and the protrusion slide into each other to prevent the liner 50 from dislodging. This arrangement simplifies the assembly of the liner 50.

[0090] In some embodiments, the liner 50 forms a liner clearance groove 52 to make way for the guide 331, thereby facilitating the engagement of the guide 331 with the guide groove 241, and also enabling the flexible headgear 30 to be disassembled and assembled without removing the liner 50.

[0091] In some embodiments, the liner 50 may be made of the same material as the flexible headgear 30 to improve aesthetics. In some embodiments, both the liner 50 and the flexible headgear 30 may be made of silicone.

[0092] In some embodiments, the detection device may further include: a base 61 and a mounting assembly. The receiving portion 20, the vector network analyzer 191, and the port extension member 192 are mounted above the base 61 via the mounting assembly. The port extension member 192 is disposed between the receiving portion 20 and the vector network analyzer 191, and is disposed facing the end 22 of the receiving portion 20. Since the antenna 10 is disposed in the receiving portion 20, the arrangement of the signal transmission line 193 for connecting the antenna 10 and the port extension member 192 is advantageous because the port extension member 192 is disposed facing the end 22 of the receiving portion 20. By disposing the port extension member 192 between the receiving portion 20 and the vector network analyzer 191, and making the vector network analyzer 191 face the port extension member 192, the arrangement of the signal transmission line for connecting the vector network analyzer 191 and the port extension member 192 is also advantageous. Meanwhile, since both the vector network analyzer 191 and the port extension 192 are located at the rear of the receiving portion 20, rather than at the bottom, leakage of the liquid dielectric can be avoided, preventing contamination and damage to the vector network analyzer 191 and the port extension 192. Furthermore, since a flexible headgear 30 is also provided inside the receiving portion 20, placing both the vector network analyzer 191 and the port extension 192 at the rear of the receiving portion 20, rather than at the bottom, helps to reduce the height of the receiving portion 20, preventing the patient's head from being too high after entering the flexible headgear 30, thus ensuring comfort.

[0093] See Figures 15 to 17 , Figure 17 This shows from yet another perspective. Figure 15 The diagram shows a structural schematic of an intracranial hemorrhage detection device. In some embodiments, the mounting components may include: a first mounting member 621, which is disposed on a base 61; a vector network analyzer 191 and a port extension member 192 are mounted opposite each other on both sides of the first mounting member 621. A receiving portion 20 is connected to the first mounting member 621 on the side facing the port extension member 192. In such an embodiment, since the receiving portion 20 is connected to the first mounting member 621 on the side facing the port extension member 192, and the vector network analyzer 191 and the port extension member 192 are mounted opposite each other on both sides of the first mounting member 621, the receiving portion 20, the port extension member 192, and the vector network analyzer 191 can be arranged sequentially at intervals, thereby facilitating wiring.

[0094] In some embodiments, the first mounting member 621 is a metal plate extending in a direction perpendicular to the base 61.

[0095] In some embodiments, the mounting assembly may further include: a second mounting member 622 and a third mounting member 623, which are disposed on the base 61; the receiving portion 20 is connected to the third mounting member 623 on the side opposite to the port extension 192, and is also connected to the second mounting member 622 on the side facing the port extension 192, thereby improving the stability of the receiving portion 20 and allowing for a more reasonable height setting of the receiving portion 20. In some embodiments, the receiving portion 20 may further include a neck support portion 26, which is connected to the peripheral portion 21 on the side away from the end 22. The neck support portion 26 provides support for the patient's neck and is connected to the third mounting member 623 above the third mounting member 623, thereby providing stable support for the patient's neck by the third mounting member 623.

[0096] In some embodiments, see Figure 21 The receiving portion 20 includes a mounting mating portion disposed at the end 22 for mating with the first mounting member 621 and the second mounting member 622, thereby connecting the receiving portion 20 with the first mounting member 621 and the second mounting member 622.

[0097] In some embodiments, the mounting mating portion may include a plurality of connecting plates 250 extending from the end 22 in a direction away from the periphery 21, a plurality of first connecting posts 251 disposed on the connecting plates 250, and a plurality of second connecting posts 252. The first connecting posts 251 extend in a direction away from the periphery 21, and the connecting plates 250 are connected to the first mounting member 621 by the engagement of fasteners passing through the first mounting member 621 and the first connecting posts 251. The second connecting posts 252 are perpendicular to the extending direction of the first connecting posts 251, and the connecting plates 250 are connected to the second mounting member 622 by the engagement of fasteners passing through the second mounting member 622 and the second connecting posts 252. Since the antenna 10 is mounted in the receiving portion 20 and the flexible headgear 30 is mounted in the receiving portion 20, the stability requirements for the receiving portion 20 are higher. The above-described connection method can improve the stability of the receiving portion 20.

[0098] In some embodiments, there are two second mounting members 622, which are disposed opposite to each other on both sides of the connecting plate 250 to improve the stability of the receiving portion 20.

[0099] In some embodiments, the receiving portion 20 further includes a plurality of reinforcing ribs 253, which are used to increase the strength of the connecting plate 250.

[0100] In some embodiments, see Figure 16The mounting components also include an auxiliary mounting component 624, which is connected to the first mounting component 621 and is used to clamp the vector network analyzer 191 between the auxiliary mounting component 624 and the first mounting component 621, thereby mounting the vector network analyzer 191 onto the first mounting component 621.

[0101] In some embodiments, the auxiliary mounting member 624 may include a mounting plate 6240 disposed parallel to the first mounting member 621 and mounting legs 6241 for connecting the mounting plate 6240 to the first mounting member 621. The mounting plate 6240 has a flange bent toward the first mounting member 621 for clamping and limiting the vector network analyzer 191, thereby eliminating the need to provide mounting holes or mounting members in the vector network analyzer 191 itself for connection with the first mounting member 621.

[0102] In some embodiments, the vector network analyzer 191 has heat dissipation holes 1910 on both sides of the mounting feet 6241, and a fan is provided inside the vector network analyzer 191 to force air to flow through the heat dissipation holes 1910 to dissipate heat from the vector network analyzer 191.

[0103] In some embodiments, see Figures 15 to 17 The mounting assembly may further include a fourth mounting member 625, which connects to the top of the first mounting member 621 and is used to mount the valve 47 and the pressure measuring element 46. Since the height of the receiving part 20 is higher than that of the first mounting member 621, mounting the valve 47 and the pressure measuring element 46 on the fourth mounting member 625 not only makes reasonable use of space but also facilitates the connection of the valve 47 and the pressure measuring element 46 to the exhaust pipe 44.

[0104] In some embodiments, the intracranial hemorrhage detection device may include: a processor 65, and a vector network analyzer 191 communicatively connected to the processor 65 for sending microwave signals to the processor 65 for processing.

[0105] In some embodiments, the processor 65 is configured to receive microwave signals from the vector network analyzer 191; filter out clutter from the microwave signals to obtain microwave signals containing only brain information; and determine brain imaging based on the clutter-filtered microwave signals. In the embodiments of this application, because clutter from the microwave signals is filtered out, there are fewer clutter points in the pixels of the brain imaging, enabling a clearer display of lesion locations.

[0106] In some embodiments, a plurality of antennas 10 are arranged along the same circumference in the receiving portion 20; an antenna 10 for transmitting microwave signals and an antenna 10 for receiving microwave signals are collectively referred to as a pair of transmitting and receiving antennas.

[0107] In some embodiments, the processor 65 is specifically configured to determine brain imaging by: determining the coordinate position of each antenna 10 and the average dielectric constant of the microwave signal propagating in the brain; determining grid points in the imaging region and generating a grid coordinate matrix; for the microwave signal, traversing each frequency point and determining the wavenumber corresponding to each frequency point; based on the average dielectric constant and the wavenumber, determining the transmission distance of the microwave signal propagating in each pair of transmit and receive antennas to each grid point by traversing each pair of transmit and receive antennas; determining the signal strength of each grid point based on the microwave signal and the transmission distance; and determining brain imaging based on the signal strength. In such embodiments, microwave signal information at different frequencies can be fully utilized, thereby improving the accuracy of the imaging results.

[0108] In some embodiments, the processor 65 is specifically configured to determine brain imaging based on signal strength by: weighting and summing the signal strength of each grid point according to the distance between each pair of transmit and receive antennas to determine a signal strength map; and determining brain imaging based on the signal strength map. The embodiments of this application effectively improve imaging resolution by weighting and summing the contributions of different antennas to signal strength based on the distance between each pair of transmit and receive antennas.

[0109] In some embodiments, the processor 65 is mounted on the side of the auxiliary mounting bracket 624 opposite to the vector network analyzer 191, which also removes the processor 65 from the base 61 to avoid contamination by leaked dielectrics. At the same time, it also allows the processor 65, the vector network analyzer 191, and the port expansion bracket 192 to be set close together, which is conducive to wiring and makes the layout of the entire intracranial hemorrhage detection device more compact.

[0110] In some embodiments, the inlet / outlet connector 31 is quickly connected to the inlet / outlet pipeline 43, the vent connector 32 is quickly connected to the vent pipeline 44, and the inlet / outlet pipeline 43 and the vent pipeline 44 are quickly connected to the media container 41 respectively.

[0111] In some embodiments, the intracranial hemorrhage detection device may include a housing that mates with the housing 20 and the base 61 to enclose the housing 20, the antenna 10, the vector network analyzer 191, the port extension 192, and the processor 65, thereby improving aesthetics and providing protection for the components.

[0112] In some embodiments, the housing forms two sets of housing heat dissipation holes 641 arranged opposite to each other, facing the heat dissipation holes 1910 on both sides of the vector network analyzer 191, for airflow, thereby facilitating heat dissipation of the vector network analyzer 191.

[0113] In some embodiments, the intracranial hemorrhage detection device may include: a plurality of fans 66 disposed inside the housing and facing the housing heat dissipation hole 641, for driving ambient air into the housing, and through the analysis element heat dissipation hole 1910 into the vector network analysis element 191 to dissipate heat from the vector network analysis element 191 before leaving through the other side housing heat dissipation hole 641.

[0114] In some embodiments, see Figure 19 The housing may include a main housing 642, a front housing 643, and a rear cover 644. The main housing 642 is detachably connected to the base 61, the front housing 643 is detachably connected to the receiving portion 20, and the rear cover 644 is detachably connected to the main housing 642. The dielectric receiving member 41 is detachably mounted on the rear cover 644. In this embodiment, dividing the housing into a main housing 642, a front housing 643, and a rear cover 644 facilitates the assembly of the housing and also facilitates the removal of the dielectric receiving member 41 for dielectric replacement.

[0115] In some embodiments, the side of the main housing 642 opposite to the receiving portion 20 is recessed toward the receiving portion 20, thereby forming a space for receiving the media receiving member 41; the rear cover 644 is L-shaped and detachably connected to the recess of the main housing 642 for installing the media receiving member 41.

[0116] In some embodiments, the main housing 642 forms a handle 646 above the recess to facilitate the transfer of the intracranial hemorrhage detection device.

[0117] In some embodiments, the main shell 642 is further provided with a heat dissipation hole 6421 below the recess for dissipating heat from the processor 65.

[0118] In some embodiments, see Figure 19 The flexible headgear 30 may also include a second headgear mounting member 34 connected to the headgear body 301. The front shell 643 is detachably connected to the receiving portion 20 and is used to press the second headgear mounting member 34 of the flexible headgear 30 to prevent the flexible headgear 30 from rotating.

[0119] In some embodiments, see Figure 15 The housing may also include a pillow portion 645, which is detachably connected to a neck support portion 26 to provide support for the patient's neck and improve aesthetics.

[0120] In some embodiments, the mounting assembly further includes a reinforcement 626 for engaging with the pillow portion 645 to provide support.

[0121] See Figure 18 , Figure 18A schematic diagram of the intracranial hemorrhage detection device according to an embodiment of this application is shown, with some components such as the processor further omitted. In some embodiments, the base 61 is provided with an opening and a bottom cover 611 for opening or closing the opening. The opening is located directly below the inlet / outlet positioning member 28, thereby facilitating the disassembly and assembly of the inlet / outlet pipeline 43 and the inlet / outlet connector 31 by opening the bottom cover 611.

[0122] In some embodiments, the opening is located between the two second mounting members 622 and on the side of the first mounting member 621 facing the receiving portion 20, so as not to affect the overall installation strength.

[0123] In some embodiments, the bottom cover 611 is hollowed out, which facilitates the outward discharge of leakage at the connection between the inlet / outlet pipe 43 and the inlet / outlet connector 31, and also allows for heat dissipation of the processor 65 and the vector network analyzer 191.

[0124] In some embodiments, see Figure 18 The base 61 has a drain hole 612 located below the connection between the drive unit 42 and the inlet / outlet pipe 43 and the exhaust pipe 44, for draining liquid in case of leakage.

[0125] In some embodiments, the intracranial hemorrhage detection device may further include an operating element 67 and a plurality of communication interfaces 68, disposed on the side of the main housing 642 opposite to the receiving portion 20 and located below the rear cover 644. Since the processor 65 is also disposed on the side opposite to the receiving portion 20, placing the operating element 67 and the plurality of communication interfaces 68 at the rear of the main housing 642 below the rear cover 644 facilitates wiring. The operating element 67 may be a button or a touch screen.

[0126] In some embodiments, see Figure 16 The intracranial hemorrhage detection device may further include: a USB splitter 652, disposed on the side of the base 61 facing away from the processor 65 and the receiving portion 20, for connecting to multiple communication interfaces 68 to expand the communication interfaces of the processor 65. See also Figure 18 The base 61 has a heat dissipation hole 613 located below the USB splitter 652 for heat dissipation of the USB splitter 652.

[0127] In some embodiments, the driver 42 and the USB splitter 652 are disposed on the side of the base 61 away from the receiving portion 20 to make efficient use of space.

[0128] In some embodiments, the intracranial hemorrhage detection device may further include multiple signal transmission lines 193 for connecting the antenna 10 and the port extension 192. See also Figure 18The signal transmission line 193 may include a first horizontal extension 1931 and a bent connecting section 1932 connected to the first horizontal extension 1931. The first horizontal extension 1931 extends along the periphery 21 of the receiving portion 20 and is used for detachable connection with the wire connector 151; the bent connecting section 1932 is used for detachable connection with the connector of the port expansion member 192. In this embodiment, since the first horizontal extensions 1931 of each signal transmission line 193 are arranged in parallel, and each bent connecting section 1932 is detachably connected to the connector of the port expansion member 192, it is beneficial to simplify wiring and also to ensure that adjacent signal transmission lines 193 are spaced apart and not pressed together, thus avoiding interference with microwave signal transmission.

[0129] Regarding the embodiments of this application, it should also be noted that, without conflict, the embodiments of this application and the features in the embodiments can be combined with each other to obtain new embodiments.

[0130] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. The scope of protection of this application shall be determined by the scope of the claims.

Claims

1. An antenna, characterized in that, It includes: The shell forms a receiving cavity with an opening on one side; The system comprises a first radiating unit, a second radiating unit, and a grounding component. The first radiating unit and the second radiating unit are disposed at the opening of the receiving cavity and are electrically connected to the housing via the grounding component to be grounded. The first radiation unit is configured to receive and transmit low-frequency microwave signals through the opening of the receiving cavity, and the second radiation unit is configured to receive and transmit high-frequency microwave signals through the opening of the receiving cavity under the coupling effect of the first radiation unit.

2. The antenna according to claim 1, characterized in that, The first radiating element is configured to extend in a tortuous manner, and the second radiating element is configured to cooperate with the first radiating element so that the operating frequency of the first radiating element is shifted to a lower frequency, while ensuring the coupling effect of the first radiating element on the second radiating element.

3. The antenna according to claim 2, characterized in that, The first radiating element includes: The first radiating element is used to transmit low-frequency microwave signals and couple with the second radiating unit; The two ends, spaced apart, are connected to the two ends of the first radiating body, and are used to connect the transmission wire and the grounding component, respectively. The two ends and the first radiating body together form an annular structure with an opening, and the second radiating unit is disposed on the inner side of the annular structure; The first radiating body is configured to extend in a tortuous manner.

4. The antenna according to claim 3, characterized in that, The radial inner radius of the first radiating body is smaller than the radial inner radius of the two ends, and the radial outer radius of the first radiating body is larger than the radial outer radius of the two ends. The first radiating body is recessed radially outward from its radially inner surface to form multiple recesses.

5. The antenna according to claim 1, characterized in that, The second radiation unit includes a second radiation body and a plurality of enhanced coupling mating parts connected to the second radiation body. The enhanced coupling mating parts are used to cooperate with the first radiation unit to enhance the coupling effect with the first radiation unit.

6. The antenna according to claim 5, characterized in that, The enhanced coupling mating portion consists of a plurality of protrusions extending from the surface of the second radiating body toward a plurality of recesses of the first radiating unit.

7. The antenna according to claim 1, characterized in that, Both the first radiating unit and the second radiating unit are sheet-like structures.

8. The antenna according to any one of claims 1-7, characterized in that, Also includes: The dielectric layer is connected to the housing. The grounding element is disposed on the side surface of the dielectric layer facing the receiving cavity; The first radiation unit and the second radiation unit are disposed on the opposite side surface of the dielectric layer, opposite to the receiving cavity.

9. The antenna according to claim 8, characterized in that, Also includes: A radiation cover is disposed on the side of the dielectric layer opposite to the grounding member, for sealing the opening of the receiving cavity and configured to allow microwave signals to pass through.

10. The antenna according to claim 8, characterized in that, The housing includes a housing body, a connecting part, and a conductive part; The shell body forms the receiving cavity; The connecting part is located at the corner of the receiving cavity, and the medium layer is connected to the shell body through the connecting part; The conductive part is connected to the bottom wall of the shell body, and the grounding member is electrically connected to the shell body through the conductive part; There is a predetermined gap between the grounding component and the side wall of the shell body.

11. An intracranial hemorrhage detection device, characterized in that, include: The antenna according to any one of claims 1-10.

12. The detection device according to claim 11, characterized in that, Also includes: The receiving section forms a space to accommodate the patient's skull; Vector network analysis components and port expansion components; The vector network analyzer is configured to send microwave signals to the port extender, receive microwave signals from the port extender, and analyze the received microwave signals. The port extender is configured to extend the port of the vector network analyzer, receive microwave signals sent by the vector network analyzer, transmit the microwave signals to one of the antennas, and receive corresponding microwave signals from the other antenna and transmit them to the vector network analyzer. The antenna is disposed in the receiving portion and configured to receive microwave signals from the port extension and transmit microwave signals to the receiving space; Alternatively, it can receive microwave signals emitted by another antenna from the said housing space and transmit them to the port extension.

13. The detection device according to claim 12, characterized in that, Also includes: The processor is configured to: Receives microwave signals from the vector network analyzer; Clutter in the microwave signal is filtered out to obtain a microwave signal containing only brain information; Brain imaging was determined based on the microwave signal after filtering out clutter.

14. The detection device according to claim 13, characterized in that, The processor is specifically configured to determine brain imaging in the following ways: Determine the coordinates of each antenna and the average dielectric constant of the microwave signal propagating in the brain; Determine the grid points in the imaging area and generate a grid coordinate matrix; For the microwave signal, traverse each frequency point and determine the wave number corresponding to each frequency point; Based on the average dielectric constant and the wave number, the transmission distance of the microwave signal propagating in each pair of transmit and receive antennas to each grid point is determined by traversing each pair of transmit and receive antennas; wherein each pair of transmit and receive antennas includes an antenna for transmitting microwave signals and an antenna for receiving microwave signals. The signal strength of each grid point is determined based on the microwave signal and the transmission distance. The brain imaging is determined based on the signal intensity.

Images