Signal extension device and intracranial hemorrhage detection device

Abstract

Embodiments of the application relate to the technical field of signal transmission in electric communication technology, and particularly relate to a signal expansion device and an intracranial hemorrhage detection device. The signal expansion device of the application improves the physical isolation effect between the multiple chips by surrounding the multiple chips in the space formed by the first slot and the second slot on the radio frequency switch PCB and the protrusions on the signal expansion device body, thereby further realizing comprehensive limitation of the radiation range of the chips, binding the signals of the multiple chips in the isolation barrier, significantly reducing the mutual interference between the signals, thereby reducing the transmission loss of the signals, effectively improving the transmission quality of the signals, and significantly improving the signal expansion performance of the device.

Description

Technical Field

[0001] The embodiments of this application relate to the technical field of signal transmission in electrical communication technology, specifically to a signal extension device and an intracranial hemorrhage detection device. Background Technology

[0002] The statements herein are provided only as background information in connection with this application and do 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, the common approach is to use signal extenders in intracranial hemorrhage detection devices, in conjunction with vector network analyzers, to detect intracranial blood oxygen levels, aiming to prevent and identify intracranial hemorrhage in advance. However, existing signal extenders fail to effectively isolate the multiple chips transmitting signals from the vector network analyzer, leading to mutual interference between the signals from multiple chips, resulting in high transmission loss and poor signal transmission quality. This, in turn, affects the detection accuracy of the intracranial hemorrhage detection device, hindering timely and accurate assessment of the patient's condition in practical applications. 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 a signal extension device suitable for extending the signal of a vector network analyzer. The signal extension device includes a signal extension device body and an RF switch PCB board. The signal expansion device body forms a cavity, and an RF switch PCB board is disposed within the cavity. A signal input terminal and a signal output terminal are formed on the signal expansion device body. The signal input terminal is configured to receive signals from a vector network analyzer, and the signal output terminal is configured to output signals. Multiple chips are disposed on the RF switch PCB board, each chip corresponding to a signal output terminal and configured to control the switching of the signal output terminal. The multiple chips are isolated from each other. The signal expansion device body has protrusions, and the RF switch PCB board has multiple grooves. Multiple chips are disposed on the RF switch PCB board between two adjacent grooves. When the RF switch PCB board is disposed within the cavity, the protrusions insert into the corresponding grooves and extend out of the grooves, thus isolating the multiple chips from each other. The protrusions are configured to surround the chips. Each groove has a first groove and a second groove. The chips are disposed within the area enclosed by the first and second grooves. The protrusions are configured to insert into the first and second grooves, thus surrounding the chips. The first and second grooves are perpendicular to each other, allowing the chips to be disposed within the area enclosed by the first and second grooves.

[0007] The signal expansion device of this application, through the mutual cooperation of the first and second perpendicular slots on the RF switch PCB board and the protrusions on the signal expansion device body, surrounds multiple chips within the space they form, improving the physical isolation effect between the multiple chips. This further achieves comprehensive limitation of the radiation range of the chips, which helps to confine the signals of each chip within the isolation barrier, significantly reducing mutual interference between signals. Consequently, it helps to reduce signal transmission loss, effectively improve signal transmission quality, and significantly enhance the signal expansion performance of the device.

[0008] Furthermore, the protrusion is formed into an L shape.

[0009] Furthermore, a silver plating layer is formed on the surface of the RF switch PCB.

[0010] Furthermore, the cross-section of the cavity is formed into a quadrilateral, and the signal output terminals are respectively located on the four sides of the quadrilateral.

[0011] Furthermore, the cross-section of the cavity is formed into a quadrilateral, and the signal input terminals are respectively located at the corners of the quadrilateral.

[0012] Secondly, embodiments of this application also provide an intracranial hemorrhage detection device, which includes the signal extension device provided in any embodiment of this application. Attached Figure Description

[0013] Other objects and advantages of this application will become apparent from the following description of embodiments of this application with reference to the accompanying drawings, and will help to provide a comprehensive understanding of this application.

[0014] Figure 1 This is a schematic diagram of the split state of the signal expansion device according to an embodiment of this application; Figure 2 This is a partial structural schematic diagram of a radio frequency switch PCB board disposed within a cavity formed by the body of a signal extension device according to an embodiment of this application. Figure 3 for Figure 1 Enlarged view of region A in the middle; Figure 4 This is a structural schematic diagram of the assembly state of a signal expansion device according to an embodiment of this application; Figure 5 This is a schematic diagram of the intracranial hemorrhage detection device applied to the signal expansion device according to an embodiment of this application; Figure 6 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 7 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 8 This shows from another perspective Figure 7 A schematic diagram of the intracranial hemorrhage detection device shown. Figure 9 This shows from yet another perspective. Figure 7 A schematic diagram of the intracranial hemorrhage detection device shown. Figure 10 A schematic diagram of an intracranial hemorrhage detection device according to an embodiment of this application is shown, in which some components such as the processor are omitted; Figure 11 An exploded view of an intracranial hemorrhage detection device according to an embodiment of this application is shown; Figure 12 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 13 This shows from another perspective Figure 12 A schematic diagram of the structure of the receiving part is shown; Figure 14 A schematic diagram of the structure of a flexible headgear for an intracranial hemorrhage detection device according to an embodiment of this application is shown.

[0015] Explanation of reference numerals in the attached figures: exist Figures 1-5 middle: 10. Signal expansion device body; 11. Cavity; 12. Protrusion; 192. Signal expansion device; 20. RF switch PCB board; 21. Groove; 211. First groove; 212. Second groove; 30. Signal input terminal; 40. Signal output terminal; 50. Main control PCB board; 60. Cover plate assembly; 61. First cover plate; 62. First shielding plate; 63. Second cover plate; 64. Second shielding plate; 100. Intracranial hemorrhage detection device; exist Figures 6-14 middle: 10. Antenna; 151. Wire connector; 191. Vector network analyzer; 1910. Analyzer heat dissipation hole; 1911. Side view; 192. Signal extension device; 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; 6110. First drain hole; 612. Second 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.

[0016] 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. Detailed Implementation

[0017] 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.

[0018] 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.

[0019] The inventors of this application have discovered that in the related technologies, existing signal expansion devices fail to effectively isolate multiple chips transmitting signals from a vector network analyzer, resulting in mutual interference between the signals of multiple chips, causing high transmission loss and low signal transmission quality. This, in turn, affects the detection accuracy of the intracranial hemorrhage detection device, thus affecting the timely and accurate judgment of the patient's condition in practical applications.

[0020] Based on this, embodiments of this application provide a signal extension device, which is applied to an intracranial hemorrhage detection device and works in conjunction with a vector network analyzer to detect intracranial blood oxygenation index, thereby achieving the purpose of early prevention and identification of intracranial hemorrhage.

[0021] like Figure 5 As shown, Figure 5 This diagram illustrates the structure of an intracranial hemorrhage detection device used in an embodiment of this application, where the signal extension device is applied.

[0022] like Figure 1 As shown, Figure 1 A schematic diagram showing the split state of the signal extension device according to an embodiment of this application is provided.

[0023] The signal extension device 192 provided in the embodiments of this application is suitable for extending the signal of a vector network analyzer. The signal extension device 192 includes: a signal extension device body 10 and an RF switch PCB board 20. The signal extension device body 10 forms a cavity 11, and the RF switch PCB board 20 is disposed within the cavity 11. A signal input terminal 30 and a signal output terminal 40 are formed on the signal extension device body 10. The signal input terminal 30 is configured to receive the signal from the vector network analyzer, and the signal output terminal 40 is configured to output the signal. A plurality of chips are disposed on the RF switch PCB board 20, each chip corresponding one-to-one with the signal output terminal 40, and configured to control the switching of the signal output terminal 40. The plurality of chips are configured to be isolated from each other.

[0024] The signal expansion device 192 of this application embodiment is configured by placing an RF switch PCB board 20 within a cavity 11 formed by the signal expansion device body 10, configuring the signal input terminal 30 formed on the signal expansion device body 10 to receive signals from a vector network analyzer, configuring the signal output terminal 40 to output signals, and configuring multiple chips on the RF switch PCB board 20, each chip corresponding one-to-one with the signal output terminal 40, and configuring the chips to control the switching of the signal output terminal 40, so that the signals from the vector network analyzer are transmitted to the multiple chips on the RF switch PCB board 20, and expanded by the multiple chips to control the switching of the signal output terminal 40; and by configuring the multiple chips to be isolated from each other, the radiation range of the chips is reduced, the mutual interference between signals is reduced, thereby helping to reduce signal transmission loss, effectively improve signal transmission quality, and significantly improve the signal expansion performance of the device.

[0025] In some embodiments, the RF switch PCB board 20 and the signal extension device body 10 can be configured to cooperate with each other so that multiple chips are isolated from each other, thereby reducing the radiation range of the chips and reducing mutual interference between signals.

[0026] like Figure 1 and Figure 2 As shown, Figure 2 This diagram illustrates a partial structure of an embodiment of the present application where the RF switch PCB board 20 is disposed within a cavity 11 formed by the signal expansion device body 10. In some embodiments, the signal expansion device body 10 may have protrusions 12, and the RF switch PCB board 20 may be configured to form a plurality of grooves 21. A plurality of chips are respectively disposed on the RF switch PCB board 20 between two adjacent grooves 21. When the RF switch PCB board 20 is disposed within the cavity 11, the protrusions 12 are inserted into the corresponding grooves 21 and extend out of the grooves 21, so that the plurality of chips are isolated from each other.

[0027] In this embodiment, the signal expansion device body 10 is configured to have protrusions 12, and the RF switch PCB board 20 is configured to have multiple grooves 21. Multiple chips are then respectively disposed on the RF switch PCB board 20 between two adjacent grooves 21. When the RF switch PCB board 20 is disposed in the cavity 11, the protrusions 12 are inserted into the corresponding grooves 21 and protrude from the grooves 21, so as to realize the mutual cooperation between the RF switch PCB board 20 and the signal expansion device body 10. Through physical isolation, multiple chips are isolated from each other, thereby effectively reducing the radiation range of the chips, reducing mutual interference between signals, ensuring the integrity of the signal during transmission, reducing signal transmission loss, and thus significantly improving the expansion performance of signals from the vector network analyzer.

[0028] In some embodiments, the protrusion 12 may be configured to surround the chip to improve the physical isolation between multiple chips by optimizing the isolation barrier, thereby more comprehensively reducing the radiation range of the chip and confining it within the isolation barrier, and further reducing mutual interference between signals.

[0029] like Figure 3 As shown, Figure 3 for Figure 1 In the enlarged view of region A, in some embodiments, the groove 21 may have a first groove 211 and a second groove 212. The chip is disposed within the area enclosed by the first groove 211 and the second groove 212. The protrusion 12 is configured to be inserted into the first groove 211 and the second groove 212 so that the protrusion 12 surrounds the chip. Through the cooperation between the protrusion 12 and the first groove 211 and the second groove 212, the isolation barrier is optimized, which helps to completely isolate the spatial radiation of multiple chips and confine the signals of each chip within the isolation barrier, thereby achieving a more comprehensive reduction in the radiation range of the chip.

[0030] In some embodiments, the first slot 211 and the second slot 212 are configured to be perpendicular to each other so that the chip can be disposed in the area enclosed by the first slot 211 and the second slot 212.

[0031] like Figure 2 As shown, in some embodiments, the protrusion 12 can be formed in an L-shape to better surround the chip, further improving the physical isolation effect between multiple chips, thereby further achieving comprehensive limitation of the radiation range of the chip, which helps to confine the signals of multiple chips within the isolation barrier and significantly reduce mutual interference between signals.

[0032] In some embodiments, a silver plating layer may be formed on the surface of the RF switch PCB board 20 to minimize ohmic loss, thereby further reducing signal transmission loss and ensuring signal integrity during transmission.

[0033] In some embodiments, multiple chips may employ low dielectric constant materials in the interlayer dielectric and metal interconnect dielectric layers to improve chip performance, minimize dielectric loss, and thereby further reduce signal transmission loss.

[0034] like Figure 1 and Figure 4 As shown, Figure 4 The diagram shows the assembled state of the signal expansion device 192 according to an embodiment of this application. In some embodiments, the cross-section of the cavity 11 can be formed as a quadrilateral, and the signal output terminals 40 are respectively disposed on the four sides of the quadrilateral to output signals from the four directions of the quadrilateral, thereby ensuring the shortest microstrip line, further reducing signal transmission loss, ensuring signal strength, and improving the signal expansion performance of the device. At the same time, it makes the signal expansion device 192 compact, which is conducive to device integration and miniaturization, so as to facilitate its application in the intracranial hemorrhage detection device 100, making the intracranial hemorrhage detection device 100 easy to carry, thereby breaking through its application field limitations and realizing real-time control of the patient's intracranial hemorrhage status.

[0035] In some embodiments, the signal output terminals 40 can be configured to have four on each side of the quadrilateral, for a total of sixteen signal output terminals 40, in order to expand the signal from the vector network analyzer into sixteen signals.

[0036] like Figure 1 and Figure 4 As shown, in some embodiments, the signal input terminals 30 can be respectively located at the corners of the quadrilateral to facilitate connection to a vector network analyzer and to receive its output signals.

[0037] Since the vector network analyzer is configured to have two ports for switching signals, in some embodiments, the signal input terminal 30 can be configured as two, with the two signal input terminals 30 respectively located at two corners of the quadrilateral.

[0038] like Figure 1 As shown, in some embodiments, the signal extension device 192 may further include a cover plate assembly 60, which is configured to enclose the cavity 11 so as to enclose the radio frequency switch PCB board 20 within the cavity 11, thereby effectively blocking external environmental interference to the signal and maintaining signal strength and stability.

[0039] like Figure 1As shown, in some embodiments, two RF switch PCBs 20 can be configured, and the signal expansion device 192 may further include a main control PCB 50. The main control PCB 50 is disposed between the RF switch PCBs 20, and is configured to control the RF switch PCBs 20. The RF switch PCBs 20 are configured to control the output of the signal output terminal 40, and the RF switch PCBs 20 and the main control PCB 50 are disposed within the cavity 11.

[0040] In this embodiment, the main control PCB board 50 is placed between the RF switch PCB boards 20, and the main control PCB board 50 is configured to control the RF switch PCB boards 20. The RF switch PCB boards 20 are configured to control the output of the signal output terminal 40, thereby extending the signal from the vector network analyzer. Furthermore, by placing the RF switch PCB boards 20 and the main control PCB board 50 inside the cavity 11, the closed design effectively blocks interference from the external environment, reduces signal attenuation during the extension process, and ensures signal strength, thereby significantly improving the extension performance of the signal from the vector network analyzer.

[0041] like Figure 1 As shown, the cover plate assembly 60 includes a first cover plate 61, a first shielding plate 62, a second cover plate 63, and a second shielding plate 64. The first cover plate 61 and the second cover plate 63 are respectively disposed on both sides of the signal expansion device body 10, forming a closed cavity 11; the first shielding plate 62 is disposed between the first cover plate 61 and the cavity 11, and the second shielding plate 64 is disposed between the second cover plate 63 and the cavity 11. The first shielding plate 62 and the second shielding plate 64 are configured to shield external electromagnetic signals.

[0042] In this embodiment, the first cover plate 61 and the second cover plate 63 are respectively disposed on both sides of the signal expansion device body 10 to form a closed cavity 11, thereby making the signal expansion device body 10 a closed structure. The first shielding plate 62 is disposed between the first cover plate 61 and the cavity 11, and the second shielding plate 64 is disposed between the second cover plate 63 and the cavity 11, so that the radio frequency switch PCB board 20 is disposed between the first shielding plate 62 and the second shielding plate 64. By setting the first shielding plate 62 and the second shielding plate 64 to shield external electromagnetic signals, the interference of external electromagnetic signals on the signal from the vector network analyzer is blocked, thereby significantly improving the signal expansion performance of the device.

[0043] In some embodiments, the RF switch PCB board 20 and the main control PCB board 50 may have multiple mounting holes, and multiple mounting mating parts are formed in the cavity 11. When the RF switch PCB board 20 and the main control PCB board 50 are disposed in the cavity 11, the mounting mating parts are inserted into the mounting holes to facilitate the placement of the RF switch PCB board 20 and the main control PCB board 50 in the cavity 11. At the same time, this improves the reliability of the fixation between the RF switch PCB board 20 and the main control PCB board 50 and the cavity 11, thereby ensuring the stability of signal transmission and further improving the signal expansion performance of the device.

[0044] In some embodiments, the first cover plate 61, the first shielding plate 62, the second cover plate 63, and the second shielding plate 64 may have multiple mounting holes, and multiple mounting mating parts are formed inside the cavity 11. When the first cover plate 61, the first shielding plate 62, the second cover plate 63, and the second shielding plate 64 are disposed in the cavity 11, the mounting mating parts are inserted into the mounting holes to facilitate the placement of the first cover plate 61, the first shielding plate 62, the second cover plate 63, and the second shielding plate 64 in the cavity 11. At the same time, this improves the reliability of the fixation between the first cover plate 61, the first shielding plate 62, the second cover plate 63, and the second shielding plate 64 and the cavity 11, thereby facilitating the maintenance of the reliability of the closed structure, ensuring the shielding effect against external electromagnetic signals, and further improving the signal expansion performance of the device.

[0045] According to the device performance test, the signal expansion device 192 provided by the embodiment of this application can achieve a chip isolation of >90dB and a signal strength attenuation of <3dB in the frequency range of 0.5GHz-3GHz, effectively reducing the mutual interference between signals of multiple chips, reducing signal transmission loss, and improving signal transmission quality.

[0046] like Figure 5 As shown, embodiments of this application also provide an intracranial hemorrhage detection device 100, which includes the signal extension device provided in any embodiment of this application. By stably and reliably extending the signal from the vector network analyzer, the accuracy of the intracranial hemorrhage detection device 100 in detecting intracranial blood oxygenation index is effectively improved, thereby facilitating the early prevention and accurate identification of intracranial hemorrhage.

[0047] See Figures 6 to 8 , Figure 6 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 7 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 8 This shows from another perspective Figure 7The diagram shows the structure of an intracranial hemorrhage detection device. In some embodiments, the intracranial hemorrhage detection device may further include: a receiving portion 20, a vector network analyzer 191, and multiple antennas 10. The receiving portion 20 forms a receiving space for accommodating the patient's brain. The vector network analyzer 191 is configured to transmit microwave signals to a signal extension device 192 and receive microwave signals from the signal extension device 192, and analyze the received microwave signals. The signal extension device 192 is configured to extend the port of the vector network analyzer 191, receive microwave signals transmitted by the vector network analyzer 191, transmit the microwave signals to one antenna 10, and receive corresponding microwave signals from another antenna 10 and transmit them to the vector network analyzer 191. The antennas 10 are disposed in the receiving portion 20 and configured to receive microwave signals from the signal extension device 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 signal extension device 192. In the embodiments of this application, by setting a signal extension device 192, the vector network analyzer 191 can be connected to multiple pairs of antennas 10 through the signal extension device 192 to transmit and receive microwave signals, thereby increasing the number of antennas 10 and improving the accuracy of detection.

[0048] In some embodiments, the accommodating space has an opening on one side to facilitate the entry of the human brain.

[0049] 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 the receiving space and configured to be used to fill liquid dielectric and deformable after 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 against the patient's brain. An antenna 10 may be disposed on the outside of the flexible headgear 30 in the receiving portion 20, and the antenna 10 is configured to receive microwave signals from the signal amplification device 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 signal amplification device 192.

[0050] 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.

[0051] 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.

[0052] See Figure 11 and Figure 14 , Figure 11 An exploded view of an intracranial hemorrhage detection device according to an embodiment of this application is shown; Figure 14 A 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 portion connected to the headgear body 301. The headgear body 301 is configured to be filled with a liquid dielectric and to deform under pressure. The liquid dielectric is configured to match the impedance of the antenna 10 and human brain tissue. The headgear mounting fitting portion is configured to cooperate with the receiving portion 20 to mount the headgear body 301 onto the receiving portion 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.

[0053] See Figure 12 and Figure 13 , Figure 12 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 13 This shows from another perspective Figure 12 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 for receiving a side opening for receiving the patient's cranium. The head cover mounting part 24 is used to install a flexible head cover 30 in the receiving space. Each antenna mounting part 23 is used to install an antenna 10 facing the flexible head cover 30 on the peripheral part 21.

[0054] 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.

[0055] In some embodiments, the headgear mounting mating part may include a first headgear mounting member 33, and a headgear mounting part 24 connected to an end 22 on the inner side of the periphery 21; the headgear mounting part 24 is configured to mate with the first headgear mounting member 33 and the headgear body 301 to prevent the headgear body 301 from moving.

[0056] In some embodiments, the headgear mounting portion 24, the peripheral portion 21, and the end portion 22 together form a groove 240. The first headgear mounting member 33 can be inserted into the groove 240 formed by the receiving portion 20, and the headgear body 301 can cover the groove 240. By enabling the first headgear mounting member 33 to be inserted into the groove 240 formed by the receiving portion 20, the first headgear mounting member 33 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.

[0057] 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.

[0058] In some embodiments, the headgear body 301 may abut against the headgear mounting portion 24 to prevent the headgear body 301 from moving toward the end portion 22, thereby avoiding interference with the detection of intracranial hemorrhage.

[0059] In some embodiments, the guide 331 protrudes from the first headgear mounting 33 to facilitate the application of force.

[0060] 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. A positioning member passes through the headgear mounting hole 332 of the first headgear mounting member 33 and the periphery mounting hole 212 of the periphery 21, thereby mounting the first headgear mounting member 33 onto the periphery 21. In this embodiment, mounting the first headgear mounting member 33 onto the periphery 21 using a positioning member ensures the fixation of the flexible headgear 30 and facilitates the replacement of the flexible headgear 30.

[0061] In some embodiments, the positioning element may be a positioning pin.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] In some embodiments, see Figure 13 The receiving part 20 may further include: a housing connector 27, which is detachably connected to the front shell 643 of the intracranial hemorrhage detection device to press the flexible head cover 30 between the front shell 643 and the housing connector 27 to prevent the flexible head cover 30 from rotating and falling off.

[0066] 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 shell connector 27 of the receiving part 20, the second headgear mounting member 34 can be pressed to prevent the flexible headgear 30 from rotating and falling off.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] In some embodiments, the drive element 42 is a pump.

[0074] 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.

[0075] In some embodiments, the liquid detection element may be disposed in the exhaust pipe 44.

[0076] 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.

[0077] 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.

[0078] In some embodiments, see Figure 12 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.

[0079] 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.

[0080] In some embodiments, see Figure 12 The headgear mounting part 24 forms an inner lining positioning element 242, see [reference]. Figure 11 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.

[0081] In some embodiments, the inner liner positioning and fitting portion 51 is a guide groove extending along the extension direction of the peripheral portion 21; the inner liner positioning member 242 is a protrusion extending along the extension direction of the peripheral portion 21, and the guide groove and the protrusion slide into each other to prevent the inner liner 50 from dislodging. This arrangement helps to simplify the assembly of the inner liner 50.

[0082] 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.

[0083] 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.

[0084] 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 signal extension device 192 are mounted on the base 61 via the mounting assembly. The base 61 is configured to drain the leaked liquid when it leaks. By configuring the base 61 to drain the leaked liquid when it leaks, mold growth or contamination of the receiving portion 20, the vector network analyzer 191, and the signal extension device 192 caused by the leaked liquid is prevented.

[0085] In some embodiments, a first drain hole 6110 is provided on the base 61 below the receiving portion 20 to drain leaked liquid. Since the leaked liquid dielectric can be drained out through the first drain hole 6110, mold growth or contamination of the vector network analyzer 191 and the signal extension device 192 caused by the leaked liquid dielectric is avoided.

[0086] In some embodiments, the first drain hole 6110 is also used to dissipate heat for the vector network analyzer 191 and the signal extender 192. Dissipating heat for the vector network analyzer 191 and the signal extender 192 through the first drain hole 6110 helps to prevent the vector network analyzer 191 and the signal extender 192 from getting too hot.

[0087] In some embodiments, the signal extender 192 is disposed between the receiving portion 20 and the vector network analyzer 191, and is positioned 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 extender 192 facing the end 22 of the receiving portion 20 facilitates the arrangement of the signal transmission line 193 for connecting the antenna 10 and the signal extender 192. Furthermore, by disposing of the signal extender 192 between the receiving portion 20 and the vector network analyzer 191, with the vector network analyzer 191 facing the signal extender 192, the arrangement of the signal transmission line for connecting the vector network analyzer 191 and the signal extender 192 is also facilitated. Simultaneously, since both the vector network analyzer 191 and the signal extender 192 are disposed on the rear side 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 signal extender 192. Furthermore, since a flexible head cover 30 is also provided inside the receiving part 20, the vector network analyzer 191 and the signal extension device 192 are both located on the rear side of the receiving part 20, rather than the bottom. This helps to reduce the height of the receiving part 20 and prevents the patient's head from being too high after entering the flexible head cover 30, which would affect comfort.

[0088] See Figures 7 to 9 , Figure 9 This shows from yet another perspective. Figure 7 The diagram shows the structure 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 signal extender 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 signal extender 192. In such an embodiment, since the receiving portion 20 is connected to the first mounting member 621 on the side facing the signal extender 192, and the vector network analyzer 191 and the signal extender 192 are mounted opposite each other on both sides of the first mounting member 621, the receiving portion 20, the signal extender 192, and the vector network analyzer 191 can be arranged sequentially at intervals, thereby facilitating wiring.

[0089] In some embodiments, the first mounting member 621 is a metal plate extending in a direction perpendicular to the base 61.

[0090] 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 side of the receiving portion 20 facing away from the signal extender 192 is connected to the third mounting member 623, and the side of the receiving portion 20 facing the signal extender 192 is also connected to the second mounting member 622, 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.

[0091] In some embodiments, see Figure 13 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.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] In some embodiments, see Figure 8The 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.

[0096] 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.

[0097] In some embodiments, the vector network analyzer 191 has heat dissipation holes 1910 on two sides 1911 facing 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.

[0098] In some embodiments, see Figures 7 to 9 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.

[0099] 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.

[0100] 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.

[0101] 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.

[0102] 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.

[0103] 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.

[0104] 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 makes the processor 65 also away from the base 61 to avoid contamination by leaked dielectrics. At the same time, it also makes the processor 65, the vector network analyzer 191, and the signal extension device 192 close together, which is conducive to wiring and makes the layout of the entire intracranial hemorrhage detection device more compact.

[0105] 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.

[0106] In some embodiments, the intracranial hemorrhage detection device may include a housing that cooperates with the receiving portion 20 and the base 61 to enclose the receiving portion 20, the vector network analyzer 191, and the signal extender 192, thereby improving aesthetics and providing protection for the vector network analyzer 191, the signal extender 192, etc.

[0107] 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.

[0108] 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.

[0109] In some embodiments, see Figure 11 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.

[0110] 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.

[0111] In some embodiments, the main housing 642 forms a handle 646 above the recess to facilitate the transfer of the intracranial hemorrhage detection device.

[0112] 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.

[0113] In some embodiments, see Figure 11 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.

[0114] In some embodiments, see Figure 7 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.

[0115] In some embodiments, the mounting assembly further includes a reinforcement 626 for engaging with the pillow portion 645 to provide support.

[0116] 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.

[0117] See Figure 10 , Figure 10 A schematic diagram of the intracranial hemorrhage detection device according to an embodiment of this application is shown, in which some components such as the processor are 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 being 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.

[0118] 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.

[0119] In some embodiments, a first drain hole 6110 may be formed on the bottom cover 611.

[0120] In some embodiments, see Figure 10 The base 61 is provided with a second drain hole 612 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.

[0121] 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.

[0122] In some embodiments, see Figure 8 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 10 The base 61 has a heat dissipation hole 613 located below the USB splitter 652 for heat dissipation of the USB splitter 652.

[0123] 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.

[0124] In some embodiments, the detection device may further include a plurality of signal transmission lines 193 for connecting the antenna 10 and the signal extension device 192. See also Figure 10 The 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 signal expansion device 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 signal expansion device 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.

[0125] It is easy to understand that the "opening plane" through which an antenna radiates electromagnetic waves is called the antenna's radiating port plane.

[0126] 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.

[0127] The above are merely specific embodiments 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. A signal extension device suitable for extending the signal of a vector network analyzer, characterized in that, It includes: The main body of the signal expansion device forms a cavity. An RF switch PCB board is disposed within the cavity. A signal input terminal and a signal output terminal are formed on the main body of the signal extension device. The signal input terminal is configured to receive the signal from the vector network analyzer, and the signal output terminal is configured to output the signal. The RF switch PCB board has multiple chips, each corresponding to a signal output terminal, and is configured to control the switching of the signal output terminal. The multiple chips are configured to be isolated from each other; The radio frequency switch PCB board and the signal expansion device body are configured to cooperate with each other so that the multiple chips are isolated from each other. The signal expansion device body has protrusions, the RF switch PCB board is configured to form multiple grooves, and multiple chips are respectively disposed on the RF switch PCB board between two adjacent grooves. When the RF switch PCB board is placed in the cavity, the protrusion is inserted into the corresponding groove and extends out of the groove so that the multiple chips are isolated from each other. The protrusion is configured to surround the chip; The groove has a first groove and a second groove, and the chip is disposed in the area enclosed by the first groove and the second groove. The protrusion is configured to be inserted into the first slot and the second slot so that the protrusion surrounds the chip; The first slot and the second slot are configured to be perpendicular to each other so that the chip can be placed in the area enclosed by the first slot and the second slot.

2. The apparatus according to claim 1, characterized in that, The protrusion is formed in an L-shape.

3. The apparatus according to claim 1 or 2, characterized in that, A silver plating layer is formed on the surface of the RF switch PCB.

4. The apparatus according to claim 1 or 2, characterized in that, The cavity has a quadrilateral cross-section. The signal output terminals are respectively located on the four sides of the quadrilateral.

5. The apparatus according to claim 1 or 2, characterized in that, The cavity has a quadrilateral cross-section. The signal input terminals are respectively located at the corners of the quadrilateral.

6. An intracranial hemorrhage detection device, characterized in that, It includes the signal extension device as described in any one of claims 1-5.

7. The detection device according to claim 6, characterized in that, Also includes: The receiving section forms a space to accommodate the patient's skull; Multiple antennas and vector network analysis components; The vector network analyzer is configured to send microwave signals to the signal extension device, receive microwave signals from the signal extension device, and analyze the received microwave signals. The signal extension device 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 accommodating portion and configured to receive microwave signals from the signal expansion device and transmit microwave signals to the accommodating space. Alternatively, it can receive microwave signals emitted by another antenna from the accommodating space and transmit them to the signal extension device.

8. The detection device according to claim 7, characterized in that, Also includes: A flexible headgear, disposed in the receiving space, is configured to be used to fill a liquid dielectric and to deform under pressure; The dielectric filling and discharging pressurization assembly is configured to fill the flexible headgear with dielectric or discharge the dielectric from the flexible headgear, and to pressurize the flexible headgear so that the flexible headgear can expand and fit against the patient's cranium; The antenna is disposed on the outside of the flexible headgear in the receiving portion, and is configured to receive microwave signals from the signal extension device and transmit microwave signals to the flexible headgear; or receive microwave signals transmitted by another antenna from the flexible headgear and transmit them to the signal extension device.

9. The detection device according to claim 7, characterized in that, Also includes: Base and mounting components, The housing, the vector network analyzer, and the signal extension device are mounted on top of the base via the mounting assembly. The base is configured to drain the leaking liquid when the liquid dielectric leaks.

10. The detection device according to claim 9, characterized in that, The base is provided with a drain hole located below the receiving part to drain the leaked liquid. The drain hole is also used to dissipate heat for the vector network analyzer and the signal extension device.

11. The detection device according to any one of claims 7-10, 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.

12. The detection device according to claim 11, characterized in that, The processor is specifically configured to determine brain imaging in the following ways: Determine the coordinate position of each antenna and the average dielectric constant of the microwave signal transmitted 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