Transcranial impedance detection device

Abstract

This utility model discloses a transcranial impedance detection device, relating to the field of medical device technology. The transcranial impedance detection device includes an injection component, an impedance detection component, a circuit board, and a display component. The injection component can contain conductive paste and inject the paste into the site to be tested. The impedance detection component is arranged around the outlet end of the injection component and can detect the impedance of the site to be tested through the conductive paste. The circuit board is located on the side of the injection component and is electrically connected to the impedance detection component. The display component is located on the side of the injection component and is electrically connected to the circuit board, used to display the impedance value detected by the impedance detection component and the location information of the site to be tested. The technical solution provided by this utility model improves the accuracy and convenience of detection.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a transcranial impedance detection device. Background Technology

[0002] Transcranial impedance testing (TIP) is primarily used to measure the impedance values ​​of the scalp and subcutaneous tissues, often serving as a preliminary test for procedures such as transcranial electrical stimulation (TCS) and brain physiological monitoring. Currently, existing TPI devices typically only possess basic impedance testing capabilities. They require injecting conductive gel into the testing area using an injection tube before performing the impedance measurement. Furthermore, they do not provide a direct and convenient way to obtain real-time test values ​​or the location of the testing site; data can only be indirectly read using external devices. This cumbersome operation hinders rapid on-site testing and may even lead to errors that could affect the accuracy of the test. Utility Model Content

[0003] The main objective of this invention is to provide a transcranial impedance detection device, which aims to improve the accuracy and convenience of detection.

[0004] To achieve the above objectives, the transcranial impedance detection device proposed in this utility model includes: An injection assembly capable of containing conductive paste and injecting the conductive paste onto the site to be tested; An impedance detection component is disposed around the outlet end of the injection component and is capable of detecting the impedance of the area to be tested through the conductive paste; A circuit board, disposed on the side of the injection assembly and electrically connected to the impedance detection assembly; and A display component is disposed on the side of the injection component and electrically connected to the circuit board, for displaying the impedance value detected by the impedance detection component and the position information of the part to be detected.

[0005] In one embodiment, the injection assembly includes an injection tube and a piston rod. The injection tube has a cavity inside for receiving the conductive paste. The circuit board and the display assembly are both located on the side of the injection tube. The piston rod is movably disposed within the cavity and can push the conductive paste out of the outlet end of the injection tube.

[0006] In one embodiment, the injection tube body includes: The tube body is provided with the cavity; A mounting portion is disposed on the outer side of the tube body; the circuit board is disposed inside the mounting portion; and the display assembly is disposed on the side of the mounting portion facing away from the tube body. An extension tube is connected to the tube body and located at the outlet end of the tube body, and the impedance detection component is arranged around the outer periphery of the extension tube.

[0007] In one embodiment, the display component includes: A mounting base plate is disposed on the side of the mounting portion facing away from the tube body; and The display screen is disposed on the side of the mounting substrate facing away from the circuit board and is electrically connected to the circuit board.

[0008] In one embodiment, the display screen is configured as an OLED screen or an e-ink screen; and / or The mounting base plate is detachably connected to the mounting part.

[0009] In one embodiment, the display component further includes control buttons disposed on the mounting substrate and electrically connected to the circuit board, for controlling the opening and closing of the display screen and / or adjusting the position information of the part to be detected.

[0010] In one embodiment, the impedance detection component includes an insulating shell and a positive conductive element and a negative conductive element spaced apart from the insulating shell. The insulating shell is arranged around the extension tube. The positive conductive element and the negative conductive element are both electrically connected to the circuit board. The end of the positive conductive element facing away from the tube body and the end of the negative conductive element facing away from the tube body are both exposed outside the insulating shell.

[0011] In one embodiment, the insulating shell is detachably connected to the extension tube or the tube body; and / or The tube body has a wiring channel on its wall that communicates with the interior of the insulating shell.

[0012] In one embodiment, the transcranial impedance detection device further includes a data interface disposed on the side of the mounting portion and electrically connected to the circuit board.

[0013] In one embodiment, the outlet end of the extension tube protrudes from the impedance detection component, and the outer peripheral surface of the outlet end of the extension tube is provided with a circumferentially arranged inclined surface, which is inclined close to the axis of the tube body in a direction away from the tube body.

[0014] The technical solution of this utility model integrates an injection component, an impedance detection component, a circuit board, and a display component into a transcranial impedance testing device. The injection component can contain conductive paste and inject it into the area to be tested. The impedance detection component is positioned around the outlet end of the injection component and can detect the impedance of the area to be tested through the conductive paste. The circuit board is located on the side of the injection component and is electrically connected to the impedance detection component. The display component is located on the side of the injection component and is electrically connected to the circuit board, used to display the impedance value detected by the impedance detection component and the position information of the area to be tested. Compared with existing transcranial impedance testing devices that can only indirectly read data through external devices, the technical solution of this utility model integrates injection, detection, and display functions into a single device. The display component is integrated on the side of the injection component, and the circuit board can control the display component to display the real-time impedance value detected by the impedance detection component and the corresponding position information. Operators can directly read the displayed content on the display component while the conductive paste is being injected and the impedance detection component is detecting, completing the testing process without the need for an external display device. This simplifies the operation process, reduces the error rate, and effectively improves the accuracy and convenience of transcranial impedance testing. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 A schematic diagram of a structure of an embodiment of the transcranial impedance detection device provided by this utility model; Figure 2 A cross-sectional view of an embodiment of the transcranial impedance detection device provided by this utility model.

[0017] Explanation of icon numbers: 100. Injection assembly; 110. Injection tube body; 111. Tube body; 1111. Wiring channel; 1112. Connecting part; 112. Mounting part; 113. Extension tube; 1131. Bevel; 120. Piston rod; 200. Impedance detection component; 210. Insulating shell; 220. Positive conductive component; 230. Negative conductive component; 300. Circuit board; 400, Display component; 410, Mounting substrate; 411, Boss; 420, Display screen; 430, Control buttons; 500. Data Interface.

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0020] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0021] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0022] Transcranial impedance testing (TIP) is primarily used to measure the impedance values ​​of the scalp and subcutaneous tissues, often serving as a preliminary test for procedures such as transcranial electrical stimulation and brain physiological monitoring. Currently, existing TPI devices typically only possess basic impedance testing capabilities. They require injecting conductive gel into the testing area using an injection tube before impedance measurement. Furthermore, they do not provide a direct and convenient view of real-time readings and operating parameters, relying instead on external devices to indirectly read relevant data. This cumbersome operation hinders rapid on-site testing and may even lead to errors that could affect accuracy.

[0023] This invention proposes a transcranial impedance detection device to improve the accuracy and convenience of detection.

[0024] Please see Figure 1 and Figure 2 In one embodiment, the transcranial impedance detection device includes an injection assembly 100, an impedance detection assembly 200, a circuit board 300, and a display assembly 400. The injection assembly 100 is capable of containing conductive paste and injecting the conductive paste into the site to be tested. The impedance detection assembly 200 is disposed around the outlet end of the injection assembly 100 and is capable of detecting the impedance of the site to be tested through the conductive paste. The circuit board 300 is disposed on the side of the injection assembly 100 and electrically connected to the impedance detection assembly 200. The display assembly 400 is disposed on the side of the injection assembly 100 and electrically connected to the circuit board 300, and is used to display the impedance value detected by the impedance detection assembly 200 and the position information of the site to be tested.

[0025] The injection assembly 100 has a needle-like structure with an outlet and an inlet end positioned opposite each other. The injection assembly 100 can contain conductive paste and push the paste from the outlet end to the area to be tested. The impedance detection assembly 200 can contact the pushed-out conductive paste, which establishes a low-impedance electrical contact interface between the impedance detection assembly 200 and the area to be tested, thereby enabling the impedance detection assembly 200 to form a stable conductive circuit with the area to be tested. The circuit board 300 includes a PCB board and a microcontroller (MCU) mounted on the PCB board. The PCB board is mounted on the side of the injection assembly 100, and the microcontroller is electrically connected to the impedance detection assembly 200. The microcontroller can control the impedance detection assembly 200 to apply an electrical signal to the area to be tested and acquire the corresponding real-time impedance signal. The impedance detection assembly 200 transmits the real-time impedance signal back to the microcontroller, which can process the signal and obtain the corresponding real-time impedance value.

[0026] The display surface of the display component 400 faces away from the injection component 100 for easy viewing by the operator. Especially during operation of the injection component 100, the operator can directly read real-time impedance values ​​and current position information from the display component 400. Specifically, the microcontroller outputs the real-time impedance value to the display component 400, allowing the display component 400 to display the real-time impedance value, facilitating direct observation of real-time impedance changes by the operator. The circuit board 300 also includes a communication module (Bluetooth or Wi-Fi module) mounted on the PCB. The microcontroller uses the communication module to wirelessly transmit data with an external control host. When a specific area needs to be tested, the external control host transmits the corresponding position information to the microcontroller via the communication module. The microcontroller then controls the display component 400 to display the specific position information of the area to be tested, enabling the operator to quickly and intuitively identify the area to be tested and thus accurately detect it. The location information of the area to be detected refers to at least one of the following on the scalp: the right frontal lobe (F2), the left central area (C1 or C3), the right frontal pole (FP2), and the left temporoparietal area (TP9).

[0027] The technical solution of this utility model includes an injection component 100, an impedance detection component 200, a circuit board 300, and a display component 400 in a transcranial impedance detection device. The injection component 100 can contain conductive paste and inject it into the area to be tested. The impedance detection component 200 is arranged around the outlet end of the injection component 100 and can detect the impedance of the area to be tested through the conductive paste. The circuit board 300 is located on the side of the injection component 100 and is electrically connected to the impedance detection component 200. The display component 400 is located on the side of the injection component 100 and is electrically connected to the circuit board 300, and is used to display the impedance value detected by the impedance detection component 200 and the position information of the area to be tested. Compared to existing transcranial impedance testing devices that can only indirectly read data through external devices, the technical solution of this utility model integrates injection, detection, and display functions into the same device. The display component 400 is integrated on the side of the injection component 100, and the circuit board 300 can control the display component 400 to display the real-time impedance value and corresponding position information detected by the impedance detection component 200. The operator can directly read the display content on the display component 400 while the conductive paste is being injected and the impedance detection component 200 is detecting. The detection process can be completed without the need for an external display device, which simplifies the operation process, reduces the error rate, and effectively improves the accuracy and convenience of transcranial impedance testing.

[0028] Please see Figure 1 and Figure 2 In one embodiment, the injection assembly 100 includes an injection tube 110 and a piston rod 120. The injection tube 110 has a cavity inside for containing conductive paste. The circuit board 300 and the display assembly 400 are both disposed on the side of the injection tube 110. The piston rod 120 is movably disposed in the cavity and can push the conductive paste out of the outlet end of the injection tube 110.

[0029] The injection tube 110 has an inlet end and an outlet end that are arranged opposite to each other. The piston rod 120 is movably disposed in the cavity of the injection tube 110. The operator can push the piston rod 120 to form a pushing force inside the cavity, and push the conductive paste that is pre-stored in the cavity from the outlet end of the injection tube 110 evenly and smoothly to the part to be tested. The operation is simple and further improves the convenience of testing.

[0030] Referring to the figure, in one embodiment, the injection tube 110 includes a tube body 111, a mounting portion 112, and an extension tube 113. The tube body 111 has a cavity; the mounting portion 112 is located on the outer side of the tube body 111, the circuit board 300 is located inside the mounting portion 112, and the display component 400 is located on the side of the mounting portion 112 facing away from the tube body 111; the extension tube 113 is connected to the tube body 111 and is located at the outlet end of the tube body 111, and the impedance detection component 200 is arranged around the outer periphery of the extension tube 113.

[0031] Both the tube body 111 and the extension tube 113 are hollow tubular structures. The extension tube 113 is coaxially arranged with the tube body 111, and its diameter is smaller than that of the tube body 111. This allows for precise positioning of the injection point, facilitating accurate injection of conductive paste into the area to be tested and improving the accuracy of the test. The impedance detection component 200 is sleeved on the outer periphery of the extension tube 113. It can contact the conductive paste after it is pushed out from the outlet end of the extension tube 113, forming a stable conductive path and ensuring stable impedance detection. The mounting part 112 protrudes from the outer side of the tube body 111 and has a box-like structure. The mounting part 112 has an internal mounting space, within which the circuit board 300 is located. The mounting part 112 provides external protection for the circuit board 300. The display component 400 is mounted on the outer surface of the mounting part 112 facing away from the tube body 111, facilitating electrical connection with the circuit board 300, avoiding additional operating space occupation, and allowing the operator to directly observe the display content while holding the tube body 111.

[0032] Furthermore, the outer surface of the tube body 111 is provided with anti-slip textures. Specifically, the anti-slip textures can be strip-shaped anti-slip textures evenly arranged along the length of the tube body 111, or cross-shaped grid-like anti-slip textures. When the operator holds the injection tube 110, the contact between the palm and the anti-slip textures increases friction, effectively preventing the tube from slipping during the pushing of the piston rod 120, thus improving operational stability. In addition, the tube body 111 and the extension tube 113 are integrally molded to ensure structural strength and prevent breakage or leakage at the connection point during injection, thereby ensuring sufficient conductive paste is applied to the area to be tested and improving reliability.

[0033] Please see Figure 1 and Figure 2 In one embodiment, the display component 400 includes a mounting substrate 410 and a display screen 420. The mounting substrate 410 is disposed on the side of the mounting portion 112 facing away from the tube body 111; the display screen 420 is disposed on the side of the mounting substrate 410 facing away from the circuit board 300 and is electrically connected to the circuit board 300.

[0034] The mounting section 112 has a mounting port communicating with the mounting space on the side facing away from the tube body 111. The mounting substrate 410 covers the mounting port, effectively concealing it and providing a stable connection with the mounting section 112, further protecting the circuit board 300 within the mounting space. The mounting substrate 410 has a groove on the side facing away from the circuit board 300, into which the display screen 420 is embedded and electrically connected to the microcontroller. The mounting substrate 410 may have a first wiring hole (not shown), located at the bottom of the groove, to facilitate the passage of wires connecting the microcontroller and the display screen 420. The display screen 420 has an impedance value display area on its panel. The microcontroller can directly output the real-time impedance value in digital form within the impedance value display area, allowing operators to directly read the accurate impedance value. It also features markers for the right frontal lobe (F2), left central region (C1 or C3), right frontal pole (FP2), and left temporoparietal region (TP9) to be detected, as well as location information areas corresponding to each detection site. After receiving the location information sent by the external control host, the microcontroller will control the location information area next to the corresponding detection site marker to light up. The operator can intuitively judge the site to be detected based on the lit location information area, avoiding misidentification and further improving the accuracy of the detection operation.

[0035] In one embodiment, the display screen 420 is configured as an OLED screen or an e-ink screen.

[0036] OLED screens, with their self-emissive properties, eliminate the need for an additional backlight source, effectively reducing the overall thickness and energy consumption of the display component 400. This, in turn, lightens the overall weight of the transcranial impedance detection device, making it easier for operators to hold and operate for extended periods. Simultaneously, OLED screens offer a wider viewing angle, ensuring clear reading of the displayed content from various angles, further enhancing the convenience and reliability of the transcranial impedance detection device. E-ink screens, on the other hand, feature low power consumption, sunlight visibility, and stable, flicker-free display, enabling clear display of impedance data and information about the area being tested for extended periods, making them suitable for prolonged testing operations. Preferably, the display screen 420 is configured as an OLED screen to ensure rapid response and superior color and brightness, resulting in a better display effect. Of course, in practical applications, the appropriate type of display screen 420 can be flexibly selected based on actual usage requirements and applicable scenarios; no restrictions are imposed here.

[0037] Please see Figure 2 In one embodiment, the mounting base plate 410 and the mounting portion 112 are detachably connected.

[0038] Specifically, the mounting substrate 410 has a circumferentially arranged boss 411 on the side facing the circuit board 300. The outer peripheral surface of the boss 411 can be interference-fitted with the inner peripheral surface of the mounting opening to achieve a detachable connection between the mounting substrate 410 and the mounting part 112, facilitating disassembly and assembly, and thus facilitating the maintenance or replacement of the circuit board 300 within the mounting space. In addition, a corresponding snap-fit ​​structure can be provided between the outer peripheral surface of the boss 411 and the wall of the mounting opening to further ensure the stability and convenience of the detachable connection.

[0039] Please see Figure 1 and Figure 2 In one embodiment, the display component 400 further includes a control button 430 disposed on the mounting substrate 410 and electrically connected to the circuit board 300, for controlling the opening and closing of the display screen 420 and / or adjusting the position information of the part to be detected.

[0040] Specifically, at least two control buttons 430 are provided, and all control buttons 430 are electrically connected to the circuit board 300. One of them is used to control the opening and closing of the display screen 420. When the transcranial impedance detection device is not in operation, the display screen 420 can be turned off by pressing the control button 430, reducing the power consumption of the transcranial impedance detection device and extending the continuous working time. In addition, at least one control button 430 is used to manually switch the position information of the part to be detected. When the operator needs to adjust the detection position, the position can be switched at least once by pressing the corresponding control button 430, avoiding repeated sending of position information through the external control host, further simplifying the operation process. It is also suitable for independent detection scenarios without an external control host, further expanding the applicability and flexibility of the transcranial impedance detection device. The control buttons 430 are located close to the display screen 420, so that the operator does not need to move their hand significantly when pressing the control buttons 430, making the operation smooth and further improving the ease of use.

[0041] Please see Figure 1 and Figure 2 In one embodiment, the impedance detection component 200 includes an insulating shell 210 and a positive conductive element 220 and a negative conductive element 230 spaced apart from the insulating shell 210. The insulating shell 210 is arranged around the extension tube 113. The positive conductive element 220 and the negative conductive element 230 are both electrically connected to the circuit board 300. One end of the positive conductive element 220 facing away from the tube body 111 and one end of the negative conductive element 230 facing away from the tube body 111 are both exposed outside the insulating shell 210.

[0042] The insulating shell 210 is fitted over the outer periphery of the extension tube 113, fixing the positions of the positive conductive element 220 and the negative conductive element 230 while preventing accidental contact between them and other external conductive structures, ensuring signal transmission stability and thus guaranteeing the accuracy of impedance detection. Both the positive conductive element 220 and the negative conductive element 230 are cylindrical. One end of the positive conductive element 220 is exposed outside the insulating shell 210, and the other end is electrically connected to the signal output terminal of the microcontroller. One end of the negative conductive element 230 is exposed outside the insulating shell 210, and the other end is electrically connected to the signal input terminal of the microcontroller. The microcontroller can output a detection signal through the positive conductive element 220 and receive the returned signal through the negative conductive element 230, thereby calculating the impedance value of the current detection point. The positive conductive element 220 and the negative conductive element 230 are symmetrically distributed on both sides of the extension tube 113 and extend parallel to the axial direction of the extension tube 113. The outlet end of the extension tube 113 is exposed outside the insulating shell 210 and is farther away from the tube body 111 than the positive conductive element 220 and the negative conductive element 230. The distance between the outlet end of the extension tube 113 and the end of the positive conductive element 220 facing away from the tube body 111 and the end of the negative conductive element 230 facing away from the tube body 111 is consistent, so as to ensure that the contact time and contact area of ​​the two conductive elements with the conductive paste are consistent or approximately the same, thereby ensuring the accuracy of impedance detection.

[0043] When the conductive paste is pushed out from the outlet end of the extension tube 113, it will spread to the surroundings and come into contact with the exposed ends of the positive conductive element 220 and the negative conductive element 230. This will simultaneously form a stable low-resistance path between the positive conductive element 220, the negative conductive element 230 and the part to be detected. The detection electrical signal output by the microcontroller can form a complete signal loop through the positive conductive element 220, the conductive paste, human scalp tissue and the negative conductive element 230. The microcontroller can then calculate the impedance value of the current detection part by the change of electrical signal in the loop.

[0044] Furthermore, both the positive electrode conductive element 220 and the negative electrode conductive element 230 are made of silver-plated copper to ensure that they have good conductivity, low impedance, and are not easily oxidized. This allows them to maintain stable conductivity over a long period, extending the service life of the impedance detection component 200 and ensuring the accuracy of impedance detection during long-term use.

[0045] Please see Figure 2 In one embodiment, the insulating shell 210 is detachably connected to the extension tube 113 or the tube body 111.

[0046] Specifically, a connecting portion 1112 extends from the outer periphery of the tube body 111 near the extension tube 113. The connecting portion 1112 is arranged around the extension tube 113 and has a gap with the extension tube 113. The outer peripheral surface of the connecting portion 1112 and the inner wall surface of the insulating shell 210 are provided with matching threads. The insulating shell 210 is screwed to the connecting portion 1112 by the threads, which facilitates disassembly, replacement and maintenance. Of course, in other embodiments, the insulating shell 210 can also be connected to the extension tube 113 or the tube body 111 by means of a buckle or bolt, etc., which is not limited here. The positive conductive element 220 and the negative conductive element 230 are located between the connecting part 1112 and the extension tube 113. The tube body 111 is provided with limiting slots at corresponding positions of the positive conductive element 220 and the negative conductive element 230 to further limit and fix the positive conductive element 220 and the negative conductive element 230, so as to avoid misalignment and displacement of the positive conductive element 220 and the negative conductive element 230 during the detection process, thereby ensuring the detection accuracy.

[0047] Please see Figure 1 and Figure 2 In one embodiment, the tube wall of the tube body 111 is provided with a wiring channel 1111 that communicates with the interior of the insulating shell 210.

[0048] Specifically, the positive conductive element 220 and the negative conductive element 230 are disposed through the insulating shell 210. One end of the wiring channel 1111 is connected to the limiting slot, and the other end extends to the outer side of the tube body 111 and forms an opening on the outer side of the tube body 111. The side wall of the mounting part 112 is provided with a second wiring hole. The wires connected to the positive conductive element 220 and the negative conductive element 230 can extend to the mounting space in sequence through the limiting slot, the wiring channel 1111 and the second wiring hole to be electrically connected to the microcontroller. The wiring channel 1111 can guide and restrict the direction of the wires, avoid the wires from being messy or pulled and damaged, and also avoid the wires from interfering with the operator's grip operation, further improving the ease of use and reliability.

[0049] Furthermore, in one embodiment, the impedance detection component 200 further includes an annular electrode sheet (not shown), which is sleeved on the outer periphery of the extension tube 113. The annular electrode sheet is located on the side of the positive electrode conductive element 220 and the negative electrode conductive element 230 facing away from the tube body 111 and is electrically connected to the positive electrode conductive element 220 and the negative electrode conductive element 230. The electrode sheet is in contact with the conductive paste, which can further increase the contact area with the conductive paste, thereby further reducing the contact impedance, reducing the loss of electrical signals during transmission, and making the impedance detection more stable and accurate.

[0050] Please see Figure 1 In one embodiment, the transcranial impedance detection device further includes a data interface 500, which is located on the side of the mounting portion 112 and electrically connected to the circuit board 300.

[0051] Specifically, the circuit board 300 also includes a power supply module (rechargeable lithium battery, power management circuit, or voltage regulator circuit) mounted on the PCB board. The data interface 500 is electrically connected to the power supply module and can be connected to an external power source to power the circuit board 300 and the display screen 420. The data interface 500 is preferably a Type-C interface, which supports reversible insertion, offering good versatility and easier connection. Furthermore, multiple data interfaces 500 can be provided. At least one data interface 500 is used to connect the external power source and the power supply module, and at least another data interface 500 is used to connect the external control host and the microcontroller for wired data transmission with the external control host. Wired and wireless data transmission are independent and can operate in parallel, synchronously transmitting the detected impedance data and corresponding location information to the external control host for storage or subsequent analysis and processing. This improves the standardization and data traceability of the overall transcranial impedance detection process.

[0052] Please see Figure 1 and Figure 2 In one embodiment, the outlet end of the extension tube 113 protrudes from the impedance detection component 200, and the outer peripheral surface of the outlet end of the extension tube 113 is provided with a circumferentially arranged inclined surface 1131, which is inclined close to the axis of the tube body 111 in the direction away from the tube body 111.

[0053] The outlet end of the extension tube 113 protrudes from the insulating shell 210 and is further away from the tube body 111 relative to the positive conductive element 220 and the negative conductive element 230, to reserve space for the diffusion of conductive paste. Thus, when injecting conductive paste, the outlet end of the extension tube 113 can first contact and precisely abut against the area to be tested, preventing the impedance detection component 200 from prematurely contacting the area to be tested and affecting the uniform spread of the conductive paste. The inclined surface 1131 on the outer periphery of the outlet end of the extension tube 113 reduces the contact area between the outlet end and the area to be tested, allowing the conductive paste to diffuse more evenly and smoothly outwards along the inclined surface 1131 when flowing out, preventing local accumulation of conductive paste at the outlet end. This results in a uniformly thick and completely covered conductive layer of conductive paste on the area to be tested, further improving the reliability and accuracy of the test.

[0054] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A transcranial impedance detection device, characterized in that, include: An injection assembly capable of containing conductive paste and injecting the conductive paste into the area to be tested; An impedance detection component is disposed around the outlet end of the injection component and is capable of detecting the impedance of the area to be tested through the conductive paste; A circuit board is disposed on the side of the injection assembly and electrically connected to the impedance detection assembly; as well as A display component is disposed on the side of the injection component and electrically connected to the circuit board, for displaying the impedance value detected by the impedance detection component and the position information of the part to be detected.

2. The transcranial impedance detection device as described in claim 1, characterized in that, The injection assembly includes an injection tube and a piston rod. The injection tube has a cavity inside for accommodating the conductive paste. The circuit board and the display assembly are both located on the side of the injection tube. The piston rod is movably disposed within the cavity and can push the conductive paste out of the outlet end of the injection tube.

3. The transcranial impedance detection device as described in claim 2, characterized in that, The injection tube body includes: The tube body is provided with the cavity; A mounting portion is disposed on the outer side of the tube body; the circuit board is disposed inside the mounting portion; and the display assembly is disposed on the side of the mounting portion facing away from the tube body. An extension tube is connected to the tube body and located at the outlet end of the tube body, and the impedance detection component is arranged around the outer periphery of the extension tube.

4. The transcranial impedance detection device as described in claim 3, characterized in that, The display component includes: A mounting base plate is disposed on the side of the mounting portion facing away from the tube body; and The display screen is located on the side of the mounting substrate facing away from the circuit board and is electrically connected to the circuit board.

5. The transcranial impedance detection device as described in claim 4, characterized in that, The display screen is configured as an OLED screen or an e-ink screen; and / or The mounting base plate is detachably connected to the mounting part.

6. The transcranial impedance detection device as described in claim 4, characterized in that, The display component also includes control buttons, which are disposed on the mounting substrate and electrically connected to the circuit board, for controlling the opening and closing of the display screen and / or adjusting the position information of the part to be detected.

7. The transcranial impedance detection device as described in claim 3, characterized in that, The impedance detection component includes an insulating shell and a positive conductive element and a negative conductive element spaced apart from the insulating shell. The insulating shell is arranged around the extension tube. The positive conductive element and the negative conductive element are both electrically connected to the circuit board. The end of the positive conductive element facing away from the tube body and the end of the negative conductive element facing away from the tube body are both exposed outside the insulating shell.

8. The transcranial impedance detection device as described in claim 7, characterized in that, The insulating shell is detachably connected to the extension tube or the tube body; and / or The tube body has a wiring channel on its wall that communicates with the interior of the insulating shell.

9. The transcranial impedance detection device as described in claim 3, characterized in that, The transcranial impedance detection device also includes a data interface, which is located on the side of the mounting part and electrically connected to the circuit board.

10. The transcranial impedance detection device as described in claim 3, characterized in that, The outlet end of the extension tube protrudes from the impedance detection component, and the outer peripheral surface of the outlet end of the extension tube is provided with a circumferentially inclined surface, which is inclined towards the axis of the tube body in the direction away from the tube body.

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