Anti-skid needle real-time monitoring system based on Hall magnetic field distance measurement

Abstract

The invention discloses an anti-skid needle real-time monitoring system based on Hall magnetic field distance measurement, and relates to the technical field of medical equipment, the anti-skid needle real-time monitoring system comprises a detection assembly, the detection assembly is internally provided with a positioning assembly used for fixing an anti-skid needle, and the positioning assembly comprises a puncture needle body; according to the anti-skid needle real-time monitoring system based on Hall magnetic field distance measurement, due to the fact that an existing puncture needle slippage monitoring technology has obvious limitation in complex medical scenes, especially battlefields and ship environments, an external linear Hall sensor is fixedly carried on the skin surface of a patient; the initial installation distance of the linear Hall sensor is about 2 cm, a voltage signal is converted into a real-time distance value, a three-axis Hall sensor is adopted to synchronously detect a magnetic field vector, space magnetic field distortion caused by ship jolting is eliminated through differential operation, and an intermittent working mode and a temperature compensation circuit are adopted to carry out temperature compensation. The anti-skid needle real-time monitoring system realizes non-contact detection, and does not need rigid connection and continuous endurance.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a real-time monitoring system for anti-slip needles based on Hall magnetic field ranging. Background Technology

[0002] Since its discovery in 1879, the Hall effect has gradually become a core technology in the field of magnetic sensing. Hall sensors are widely used in industrial control, automotive electronics and medical equipment due to their non-contact, high precision, vibration resistance and pollution resistance characteristics. In particular, in the medical field, Hall technology is used for micro-displacement detection and brushless motor control.

[0003] Existing needle slippage monitoring systems based on Hall effect magnetic field ranging are mostly applicable to complex environments such as battlefields and ships, and are used for needle stability monitoring and alarm in blood purification treatment of critically ill patients. Existing needle slippage monitoring technologies mainly include two categories: optical ranging and mechanical contact sensors. However, they have significant limitations in complex medical scenarios, especially in battlefield and ship environments. Hall effect needle slippage detection technology innovatively solves the following core problems through magnetic field ranging:

[0004] I. Insufficient resistance to environmental interference;

[0005] Second, mechanical contact sensors need to be in close contact with the puncture needle or skin, which is easily affected by changes in the patient's position or the pulling of the tubing, and are prone to wear and tear with long-term use;

[0006] Third, laser ranging requires continuous emission of high-power beams, with typical power consumption reaching 20-50mA, which is difficult to meet the needs of continuous 4-hour monitoring. Hall effect needle-drop detection technology, through the principle of magnetic field ranging, breaks through the environmental adaptability bottleneck of optical and mechanical solutions, and achieves a leapfrog improvement in anti-interference, ease of installation, endurance and intelligent early warning. It is especially suitable for the critical care needs in complex battlefield and shipboard scenarios, and provides a revolutionary solution for the safety of blood purification treatment.

[0007] Therefore, we propose a real-time monitoring system for anti-slip needles based on Hall magnetic field ranging to solve the problems mentioned above. Summary of the Invention

[0008] The purpose of this invention is to provide a real-time monitoring system for anti-slip needles based on Hall magnetic field ranging, so as to solve the problem that traditional puncture needle anti-slip monitoring devices are easily affected by the external environment, thus limiting their use.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a real-time monitoring system for anti-slip needles based on Hall magnetic field ranging, comprising a detection component, wherein the detection component has an internal positioning component for fixing the anti-slip needle, the positioning component includes a puncture needle body, the detection component also has an internal reset component, the detection component includes a needle removal detection base, the needle removal detection base has an internal detector, the outer surface of the needle removal detection base is coupled to a needle removal detection cover, the outer surface of the needle removal detection cover is provided with an alarm indicator light near the center, the outer surface of the needle removal detection cover is provided with a reset button, the positioning component includes a puncture needle body, the outer surface of the puncture needle body is fixedly fitted with a positioning clip, the outer surface of the puncture needle body is also provided with a first tilt sensor, the reset component includes a support plate, one side of the outer surface of the support plate is fixedly mounted with four magnet fixing clips, neodymium magnets are fixedly embedded between the inner walls of the four magnet fixing clips, and the outer surface of the neodymium magnets is provided with a second tilt sensor.

[0010] Preferably, the detection component further includes a protective cover, a charging port is provided on one outer surface of the needle removal detection base, and a switch is provided on the outer surface of the needle removal detection base.

[0011] Preferably, a low battery indicator light is provided on one side edge of the outer surface of the needle removal detection cover, and a charging indicator light is provided on the other side edge of the outer surface of the needle removal detection cover.

[0012] Preferably, the inner wall of the positioning clamp is rotatably connected to a rotating connector, the outer surface of the puncture needle body is fixedly fitted with an installation sleeve, and the outer surface of the installation sleeve is fixed with an installation platform.

[0013] Preferably, the reset assembly further includes a mounting bracket, the inner wall of which is provided with a drive motor, and the output end of the drive motor is fixedly connected to a drive rod.

[0014] Preferably, a drive gear is fixedly sleeved on the outer surface of the drive rod, a gear ring is meshed on the outer surface of the drive gear, and an indicator needle is fixed near the center of the outer surface of the neodymium magnet.

[0015] Preferably, the inner walls of the protective cover are fixedly connected to the outer surfaces of the two sides of the needle removal detection base by screws, and the outer surface of the positioning clamp is fixedly connected to the inner wall of the protective cover by screws.

[0016] Preferably, the outer surface of the first tilt sensor is coupled to the outer surface of the mounting platform, and both ends of the puncture needle body extend to the outside of the protective cover.

[0017] Preferably, one end of the rotating connector is fixedly connected to the outer surface of the other side of the support plate, the outer surface of the second tilt sensor is coupled to the outer surface of the indicator needle, the outer surface of the support plate is fixedly connected to the outer surface of the toothed ring, the outer surface of the mounting bracket is fixedly connected to the inner wall of the protective cover, and one end of the drive rod extends movably through to the outside of the mounting bracket.

[0018] Preferably, the system includes a control unit, a dynamic threshold module, a permanent magnet unit, a triaxial Hall sensor module, a multi-level alarm unit, and a temperature compensation module.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. Due to the significant limitations of existing needle slippage monitoring technologies in complex medical scenarios, especially in battlefield and ship environments, this invention addresses these limitations by fixing an external linear Hall sensor to the patient's skin surface. The initial installation distance of the linear Hall sensor from the neodymium magnet is approximately 2 cm. The voltage signal is converted into a real-time distance value, and a three-axis Hall sensor is used to synchronously detect the magnetic field vector. Differential calculations are used to eliminate spatial magnetic field distortion caused by ship turbulence. An intermittent working mode and temperature compensation circuit are employed to achieve a non-contact detection, rigid connection-free, and continuous real-time needle slippage monitoring system. This significantly improves portability and solves the problem that traditional needle slippage monitoring devices are easily affected by the external environment, thus limiting their use.

[0021] 2. To ensure that the neodymium magnet and the puncture needle body remain perpendicular at all times, thereby ensuring the stability of the magnetic field, when the neodymium magnet and the puncture needle body are not perpendicular, the drive motor is started, which drives the neodymium magnet to rotate slightly until the neodymium magnet and the puncture needle body are perpendicular. Through the action of the reset component, the perpendicularity between the neodymium magnet and the puncture needle body is ensured, ensuring that the magnetic field distribution is predictable and avoiding ranging errors caused by polarity shift. This ensures the stability of the magnetic field in the anti-slip needle real-time monitoring system based on Hall magnetic field ranging.

[0022] 3. The permanent magnet unit provides a stable magnetic field source for the monitoring system. The triaxial Hall sensor module, combined with the magnetic field attenuation model, calculates the real-time distance between the puncture needle body and the linear Hall sensor placed on the patient's skin. The dynamic threshold module can accurately determine the risk of puncture needle slippage, avoiding false alarms or missed alarms. The multi-level alarm unit can intuitively provide feedback on the status of the real-time monitoring system and promptly warn of slippage risks. The temperature compensation module can suppress temperature drift interference, ensure stable ranging accuracy, and offset the influence of ambient temperature changes on the Hall sensor, ensuring that the ranging error is controllable over a wide temperature range. Attached Figure Description

[0023] Figure 1This is a frontal perspective perspective view of a real-time monitoring system for anti-slip needles based on Hall magnetic field ranging according to the present invention.

[0024] Figure 2 This is a side perspective perspective view of a real-time monitoring system for anti-slip needles based on Hall magnetic field ranging according to the present invention.

[0025] Figure 3 This is a perspective view of the detection component of a real-time monitoring system for anti-slip needles based on Hall magnetic field ranging according to the present invention.

[0026] Figure 4 This is a three-dimensional view of the puncture needle portion of an anti-slip needle real-time monitoring system based on Hall magnetic field ranging according to the present invention.

[0027] Figure 5 This is a perspective view of the rotating connector portion of the anti-slip needle real-time monitoring system based on Hall magnetic field ranging according to the present invention.

[0028] Figure 6 This is a perspective view of the needle removal detection base of the anti-slip needle real-time monitoring system based on Hall magnetic field ranging according to the present invention.

[0029] Figure 7 This is a perspective view of the reset component of a real-time monitoring system for anti-slip needles based on Hall magnetic field ranging according to the present invention.

[0030] Figure 8 For the present invention Figure 7 Enlarged view of point A in the middle;

[0031] Figure 9 This is a three-dimensional view of the support plate structure of the anti-slip needle real-time monitoring system based on Hall magnetic field ranging according to the present invention.

[0032] Figure 10 This is a system diagram of a real-time monitoring system for anti-slip needles based on Hall magnetic field ranging according to the present invention.

[0033] In the picture:

[0034] 1. Detection Components; 101. Needle Removal Detection Base; 102. Detector; 103. Charging Port; 104. Needle Removal Detection Top Cover; 105. Switch; 106. Reset Button; 107. Low Battery Indicator; 108. Alarm Indicator; 109. Charging Indicator; 110. Protective Cover; 2. Positioning Components; 201. Puncture Needle Body; 202. Positioning Clamp; 203. Rotary Connector; 204. Mounting Sleeve; 205. Mounting Platform; 206. 3. First tilt sensor; 4. Reset assembly; 5. Support plate; 6. Magnet fixing clip; 7. Neodymium magnet; 8. Indicator needle; 9. Second tilt sensor; 10. Gear ring; 11. Mounting bracket; 12. Drive motor; 13. Drive rod; 14. Drive gear; 15. Control unit; 16. Dynamic threshold module; 17. Permanent magnet unit; 18. Triaxial Hall sensor module; 19. Multi-level alarm unit; 20. Temperature compensation module. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figure 1-9This invention provides a technical solution: a real-time monitoring system for anti-slip needles based on Hall magnetic field ranging, comprising a detection component 1, an internal positioning component 2 for fixing the anti-slip needle, the positioning component 2 including a puncture needle body 201, and a reset component 3. The detection component 1 also includes a needle removal detection base 101, an internal detector 102, and a needle removal detection cover 104 coupled to the outer surface of the needle removal detection base 101. An alarm indicator light 108 is located near the center of the outer surface of the needle removal detection cover 104. A reset button 106 is provided on the surface; the positioning component 2 includes a puncture needle body 201, a positioning clip 202 is fixedly sleeved on the outer surface of the puncture needle body 201, and a first tilt sensor 206 is also provided on the outer surface of the puncture needle body 201; the reset component 3 includes a support plate 301, four magnet fixing clips 302 are fixedly installed on one side of the outer surface of the support plate 301, neodymium magnets 303 are fixedly embedded between the inner walls of the four magnet fixing clips 302, and a second tilt sensor 305 is provided on the outer surface of the neodymium magnets 303; the detection component 1 also includes a protective cover 110, and a charging port is provided on one side of the outer surface of the needle removal detection base 101. A switch 105 is provided on the outer surface of the needle removal detection base 101. A low battery indicator light 107 is provided on one side edge of the outer surface of the needle removal detection cover 104, and a charging indicator light 109 is provided on the other side edge of the outer surface of the needle removal detection cover 104. A rotating connector 203 is rotatably connected to the inner wall of the positioning clamp 202. An installation sleeve 204 is fixedly fitted on the outer surface of the puncture needle body 201. An installation platform 205 is fixed on the outer surface of the installation sleeve 204. The opposing inner walls of the protective cover 110 are fixedly connected to the outer surfaces of the two sides of the needle removal detection base 101 by screws. The outer surface of the positioning clamp 202 is open. The screws are fixedly connected to the inner wall of the protective cover 110. The outer surface of the first tilt sensor 206 is coupled to the outer surface of the mounting platform 205. Both ends of the puncture needle body 201 extend to the outside of the protective cover 110. One end of the rotating connector 203 is fixedly connected to the outer surface of the other side of the support plate 301. The outer surface of the second tilt sensor 305 is coupled to the outer surface of the indicator needle 304. The outer surface of the support plate 301 is fixedly connected to the outer surface of the toothed ring 306. The outer surface of the mounting bracket 307 is fixedly connected to the inner wall of the protective cover 110. One end of the drive rod 309 extends movably to the outside of the mounting bracket 307.

[0037] In this embodiment, existing needle slippage monitoring technologies mainly include optical ranging and mechanical contact sensors. However, these technologies have significant limitations in complex medical scenarios, especially in battlefield and shipboard environments. Furthermore, traditional optical solutions rely on straight-line propagation paths, making them susceptible to signal interruption and misjudgment due to blood contamination, dressing obstruction, and optical element misalignment. Hall effect technology, based on non-contact magnetic field detection, is unaffected by liquids, obstructions, and ambient light, making it particularly suitable for subcutaneous puncture scenarios. The Hall effect system fixes a neodymium magnet 303 to the surface of the needle handle 201. The linear Hall effect sensor monitoring device only needs to be attached to the puncture site. Within 2cm of the human body surface, no rigid connection is required, avoiding mechanical wear and reducing restrictions on patient movement. Installation time is reduced from 3-5 minutes in traditional solutions to within 30 seconds, making it more suitable for emergency situations. Furthermore, the Hall effect technology uses an intermittent working mode, waking up once per second, with a sleep current ≤10μA. Combined with a small lithium battery, the battery life is extended to 6-8 hours, and the size is reduced to one-third of traditional devices, significantly improving portability. The linear Hall sensor, through a built-in temperature compensation module and adaptive bandpass filtering, can suppress more than 90% of temperature drift and high-frequency electromagnetic noise, operating within a 40℃ temperature difference and 30℃ range. In an electromagnetic field of V / m, the ranging error of the Hall system is still controlled within ±0.5 mm, while the error of the laser solution can reach ±1.5 mm. In this technical solution, the polarity of the neodymium magnet 303 is perpendicular to the direction of the puncture needle body 201 tubing, used to provide a strong magnetic field to locate the position of the puncture needle body 201. In addition, among the indicator devices set on the surface of the needle removal detection cover 104, the low battery indicator light 107 is used to indicate the battery level, the alarm indicator light 108 is used to reflect the needle removal monitoring status, and the charging indicator light 109 is used to detect the charging status. When the detector 102 detects a large change in the magnetic field, the alarm indicator light 108 will issue a red alarm. When using this anti-slip needle real-time monitoring system based on Hall magnetic field ranging, such as Figure 4As shown, the neodymium magnet 303 is first fixed by four magnet clamps 302, ensuring that the indicator needle 304 on its surface is parallel to the mounting sleeve 204. Simultaneously, the first tilt sensor 206 and the second tilt sensor 305 are activated to detect whether the puncture needle body 201 and the neodymium magnet 303 are perpendicular. Since the indicator needle 304 is completely parallel to the puncture needle body 201 and the indicator needle 304 is on the same straight line as the mounting platform 205, by placing the second tilt sensor 305 on top of the indicator needle 304, changes in the angle between the neodymium magnet 303 and the puncture needle body 201 can be detected by the first tilt sensor 206 and the second tilt sensor 305. The first tilt sensor 206 measures the angle between the puncture needle body 201 and the neodymium magnet 303. The calculation of the angle difference between the respective spatial orientation angles and whether it meets the angle threshold for a perpendicular relationship essentially transforms the spatial relationship between the puncture needle body 201 and the neodymium magnet 303 into a quantitative comparison of angle data. The first tilt sensor 206 integrates a miniature capacitor, using the direction of gravity as a fixed reference. Through the deformation of the sensitive unit, it outputs the angle between the object and the horizontal plane, realizing the detection of the angle between the two. In addition, the working principle of the second tilt sensor 305 is the same as that of the first tilt sensor 206, which will not be described in detail here. Then, the external linear Hall sensor can be fixedly mounted on the patient's skin surface, and the initial installation distance of the linear Hall sensor from the neodymium magnet 303 is about 2cm. According to the Hall effect, when the linear Hall sensor is in a magnetic field, its output voltage... magnetic induction intensity perpendicular to the sensitive surface Positive correlation , Hall coefficient, As the bias current, the magnetic field strength-distance decay curve is calibrated. , The parameters related to magnetic pole shape are used to convert the voltage signal into a real-time distance value. Then, the initial output voltage can be automatically recorded after the device is attached. and corresponding reference distance Hall voltage is collected every 1 second. The real-time distance is calculated using a pre-stored magnetic field attenuation model set in detector 102. Displacement analysis: calculation Combined with dynamic thresholds, such as when displacement deviation > 3 mm lasts for 2 seconds, alarm indicator 108 is triggered. Additionally, a triaxial Hall sensor 4 synchronously detects the magnetic field vector, eliminating spatial magnetic field distortion caused by ship turbulence through differential calculations. An integrated temperature compensation module 9, combined with an adaptive filtering algorithm, suppresses environmental temperature drift and electromagnetic noise. Through the cooperation of the permanent magnet unit 6, the triaxial Hall sensor module 7, the dynamic threshold module 5, and the multi-level alarm unit 8, non-contact displacement monitoring is achieved using a magnetic field attenuation model. An intermittent working mode and temperature compensation circuit are employed, supporting 4 hours of continuous operation. This anti-slip needle real-time monitoring system operates over a wide temperature range, enabling non-contact detection, eliminating the need for rigid connections, and providing continuous power. Based on non-contact magnetic field detection, Hall effect technology is unaffected by liquids, obstructions, or ambient light, making it particularly suitable for subcutaneous puncture scenarios. Installation time is reduced from 3-5 minutes in traditional solutions to within 30 seconds, making it more suitable for emergency situations. Battery life is extended to 6-8 hours, and the size is reduced to 1 / 3 of traditional devices, significantly improving portability. This solves the problem that traditional puncture needle anti-slip monitoring devices are easily affected by external environmental factors, limiting their usability.

[0038] like Figures 1-9As shown, a real-time monitoring system for anti-slip needles based on Hall effect magnetic field ranging includes a detection component 1. The detection component 1 internally houses a positioning component 2 for fixing the anti-slip needle. The positioning component 2 includes a puncture needle body 201. The detection component 1 also includes a reset component 3. The detection component 1 includes a needle removal detection base 101, with a detector 102 inside. A needle removal detection cover 104 is coupled to the outer surface of the needle removal detection base 101. An alarm indicator light 108 is located near the center of the outer surface of the needle removal detection cover 104, and a reset button 106 is located on the outer surface of the needle removal detection cover 104. The positioning component 2 includes the puncture needle body 201, with a positioning clip 202 fixedly sleeved on the outer surface of the puncture needle body 201. A first tilt sensor 206 is also located on the outer surface of the puncture needle body 201. The reset component 3 includes a support plate 301, with four magnetic clamps fixedly mounted on one side of the outer surface of the support plate 301. 302. Neodymium magnets 303 are fixedly embedded between the inner walls of the four magnet fixing clips 302. A second tilt sensor 305 is set on the outer surface of the neodymium magnets 303. The reset assembly 3 also includes a mounting bracket 307. A drive motor 308 is set on the inner wall of the mounting bracket 307. A drive rod 309 is fixedly connected to the output end of the drive motor 308. An active gear 310 is fixedly sleeved on the outer surface of the drive rod 309. A gear ring 306 is meshed on the outer surface of the active gear 310. An indicator needle 304 is fixed near the center of the outer surface of the neodymium magnets 303. One end of the rotating connector 203 is fixedly connected to the outer surface of the other side of the support plate 301. The outer surface of the second tilt sensor 305 is coupled to the outer surface of the indicator needle 304. The outer surface of the support plate 301 is fixedly connected to the outer surface of the gear ring 306. The outer surface of the mounting bracket 307 is fixedly connected to the inner wall of the protective cover 110. One end of the drive rod 309 extends movably through to the outside of the mounting bracket 307.

[0039] In this embodiment, to ensure that the neodymium magnet 303 and the puncture needle body 201 remain perpendicular, thereby ensuring the stability of the magnetic field, when the first tilt sensor 206 and the second tilt sensor 305 detect that the neodymium magnet 303 and the puncture needle body 201 are not perpendicular, the drive motor 308 can be activated through the external control system. This causes the drive rod 309 to rotate, which in turn drives the drive gear 310 to rotate, thereby causing the gear ring 306 to rotate and move by an angle. The rotation of the gear ring 306 causes the support plate 301 to rotate, which in turn causes the rotating connector 203 to rotate inside the positioning clamp 202. The rotation of the support plate 301 causes the four magnet fixing clamps 302 to rotate, which in turn causes the neodymium magnet 303 to rotate slightly. In this configuration, the rotating connector 203 and the toothed ring 306 are concentric circles. When the first tilt sensor 206 and the second tilt sensor 305 detect that the neodymium magnet 303 and the puncture needle body 201 are perpendicular, the drive motor 308 can be turned off. The drive gear 310 and the toothed ring 306 are fully engaged without gaps. The drive motor 308 has a self-locking function, and its working principle is a mature existing technology, which will not be described in detail here. Through the function of the reset component 3, the perpendicularity between the neodymium magnet 303 and the puncture needle body 201 is ensured, ensuring that the magnetic field distribution is predictable and avoiding distance measurement errors caused by polarity shift. This ensures the stability of the magnetic field in the anti-slip needle real-time monitoring system based on Hall magnetic field distance measurement.

[0040] like Figure 10 As shown, the control unit 4, dynamic threshold module 5, permanent magnet unit 6, triaxial Hall sensor module 7, multi-level alarm unit 8, and temperature compensation module 9 are included.

[0041] In this embodiment, the permanent magnet unit 6 provides a stable magnetic field source for the anti-slip needle real-time monitoring system based on Hall magnetic field ranging, providing a physical basis for ranging. Through the correlation characteristics between magnetic field and distance, indirect positioning of the puncture needle is achieved. The triaxial Hall sensor module 7 is mainly used to collect magnetic field signals, convert them into distance data, convert changes in magnetic field intensity into electrical signals, and calculate the real-time distance between the puncture needle body 201 and the linear Hall sensor placed on the patient's skin using a magnetic field attenuation model. It is the core component for realizing non-contact ranging. The dynamic threshold module 5 can accurately judge the risk of slippage of the puncture needle body 201, avoiding false alarms or missed alarms. The system dynamically sets displacement deviation thresholds to distinguish between normal minute displacements and dangerous slippage, ensuring the accuracy and reliability of the alarm indicator 108. The multi-level alarm unit 8 can intuitively reflect the status of the real-time monitoring system and promptly warn of slippage risks. The low battery indicator 107, alarm indicator 108, and charging indicator 109 distinguish between power, monitoring, and charging, and trigger a clear alarm when the puncture needle body 201 slips, ensuring a rapid response from medical staff. The temperature compensation module 9 can suppress temperature drift interference, ensure stable ranging accuracy, and offset the influence of ambient temperature changes on the Hall sensor, ensuring that the ranging error is controllable over a wide temperature range.

[0042] The device's usage and working principle: Hall effect technology is based on non-contact magnetic field detection, unaffected by liquids, obstructions, and ambient light, making it particularly suitable for subcutaneous puncture scenarios. The Hall system uses neodymium magnets 303 fixed to the surface of the handle portion of the puncture needle body 201. The linear Hall sensor monitoring device only needs to be attached to within 2cm of the patient's skin, eliminating the need for rigid connections. This avoids mechanical wear and reduces restrictions on patient movement, shortening installation time from 3-5 minutes in traditional solutions to within 30 seconds, making it more suitable for emergency situations. Furthermore, Hall effect technology employs an intermittent working mode, waking up once per second, with a sleep current ≤10μA. Combined with a small lithium battery, the battery life is extended to 6-8 hours, and the size is reduced to one-third of traditional devices, significantly improving portability. The linear Hall sensor, through a built-in temperature compensation module 9 and adaptive bandpass filtering, can suppress over 90% of temperature drift and high-frequency electromagnetic noise. Even with a 40℃ temperature difference and a 30 V / m electromagnetic field, the Hall system's ranging error remains within ±0.5 mm, while laser solutions can achieve an error of ±1.5 mm. In this technical solution, the polarity of the neodymium magnet 303 is perpendicular to the direction of the tubing of the puncture needle body 201, used to provide a strong magnetic field to position the puncture needle body 201. Additionally, among the indicator devices on the surface of the needle removal detection cover 104, the low battery indicator 107 indicates the battery level, the alarm indicator 108 reflects the needle removal monitoring status, and the charging indicator 109 detects the charging status. When the detector 102 detects a large change in the magnetic field, the alarm indicator 108 will issue a red light alarm. Figure 4As shown, four magnet clamps 302 fix the neodymium magnet 303, making the indicator needle 304 on its surface parallel to the mounting sleeve 204. Simultaneously, the first tilt sensor 206 and the second tilt sensor 305 are activated to detect whether the puncture needle body 201 and the neodymium magnet 303 are perpendicular. Since the indicator needle 304 is completely parallel to the puncture needle body 201 and the indicator needle 304 is on the same straight line as the mounting platform 205, by placing the second tilt sensor 305 on top of the indicator needle 304, changes in the angle between the neodymium magnet 303 and the puncture needle body 201 can be detected by the first tilt sensor 206 and the second tilt sensor 305. Then, the external linear Hall sensor can be fixedly mounted on the patient's skin surface, with the initial installation distance of the linear Hall sensor from the neodymium magnet 303 being approximately 2 cm. According to the Hall effect, when the linear Hall sensor is in a magnetic field, its output voltage... magnetic induction intensity perpendicular to the sensitive surface Positive correlation , Hall coefficient, As the bias current, the magnetic field strength-distance decay curve is calibrated: , The parameters related to magnetic pole shape are used to convert the voltage signal into a real-time distance value. Then, the initial output voltage can be automatically recorded after the device is attached. and corresponding reference distance Hall voltage is collected every 1 second. The real-time distance is calculated using a pre-stored magnetic field attenuation model set in detector 102. Displacement analysis: calculation Combined with dynamic thresholds, such as when displacement deviation > 3 mm lasts for 2 seconds, alarm indicator 108 is triggered. Additionally, a three-axis Hall sensor synchronously detects the magnetic field vector, and differential calculations eliminate spatial magnetic field distortion caused by ship turbulence. An integrated temperature compensation module 9, combined with an adaptive filtering algorithm, suppresses environmental temperature drift and electromagnetic noise. Through the cooperation of the permanent magnet unit 6, the three-axis Hall sensor module 7, the dynamic threshold module 5, and the multi-level alarm unit 8, non-contact displacement monitoring is achieved using a magnetic field attenuation model. An intermittent working mode and temperature compensation circuit are employed, supporting 4 hours of continuous operation. This anti-slip needle real-time monitoring system operates over a wide temperature range, enabling non-contact detection, eliminating the need for rigid connections, and providing continuous power. Utilizing Hall effect technology based on non-contact magnetic field detection, it is unaffected by liquids, obstructions, or ambient light, making it particularly suitable for subcutaneous puncture scenarios. Installation time is reduced from 3-5 minutes in traditional solutions to within 30 seconds, making it more suitable for emergency situations. Battery life is extended to 6-8 hours, and the size is reduced to one-third of traditional devices. When the first tilt sensor 206 and the second tilt sensor 305 detect that the neodymium magnet 303 is not perpendicular to the puncture needle body 201, it can detect the needle's movement. The external control system starts the drive motor 308, which drives the drive rod 309 to rotate, thereby driving the drive gear 310 to rotate, which in turn drives the gear ring 306 to rotate and move by an angle. The rotation of the gear ring 306 drives the support plate 301 to rotate, which in turn drives the rotating connector 203 to rotate inside the positioning clamp 202. The rotation of the support plate 301 drives the four magnet fixing clamps 302 to rotate, which in turn drives the neodymium magnet 303 to rotate slightly. The rotating connector 203 and the gear ring 306 are concentric circles. When the first tilt sensor 206 and the second tilt sensor 305 detect... When the neodymium magnet 303 is found to be perpendicular to the puncture needle body 201, the drive motor 308 can be turned off. The permanent magnet unit 6 provides a stable magnetic field source for the anti-slip needle real-time monitoring system based on Hall magnetic field ranging, providing a physical basis for ranging. Through the correlation characteristics between magnetic field and distance, the triaxial Hall sensor module 7 is mainly used to collect magnetic field signals, convert them into distance data, convert changes in magnetic field strength into electrical signals, and calculate the real-time distance between the puncture needle body 201 and the linear Hall sensor placed on the patient's skin using a magnetic field attenuation model. This is the core of realizing non-contact ranging. The core component, the dynamic threshold module 5, can accurately determine the risk of slippage of the puncture needle body 201. By dynamically setting the displacement deviation threshold, it can distinguish between normal small displacement and dangerous slippage. The multi-level alarm unit 8 can intuitively provide feedback on the status of the real-time monitoring system and promptly warn of slippage risks. The low power indicator 107, alarm indicator 108, and charging indicator 109 can distinguish between power, monitoring, and charging, and trigger a clear alarm when the puncture needle body 201 slips. The temperature compensation module 9 can suppress temperature drift interference, ensure stable ranging accuracy, and offset the influence of ambient temperature changes on the Hall sensor.

[0043] The wiring diagrams for the detector 102, charging port 103, switch 105, reset button 106, low battery indicator 107, alarm indicator 108, charging indicator 109, first tilt sensor 206, second tilt sensor 305, drive motor 308, control unit 4, dynamic threshold module 5, permanent magnet unit 6, triaxial Hall sensor module 7, multi-level alarm unit 8, and temperature compensation module 9 in this invention are common knowledge in the field, and their working principles are known technologies. The appropriate model is selected based on actual use. Therefore, the control methods and wiring arrangements for the detector 102, charging port 103, switch 105, reset button 106, low battery indicator 107, alarm indicator 108, charging indicator 109, first tilt sensor 206, second tilt sensor 305, drive motor 308, control unit 4, dynamic threshold module 5, permanent magnet unit 6, triaxial Hall sensor module 7, multi-level alarm unit 8, and temperature compensation module 9 will not be explained in detail.

[0044] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A real-time monitoring system for anti-slip needles based on Hall magnetic field ranging, comprising a detection component (1), wherein the detection component (1) is internally provided with a positioning component (2) for fixing the anti-slip needle, the positioning component (2) including a puncture needle body (201), and the detection component (1) is further internally provided with a reset component (3), characterized in that: The detection component (1) includes a needle removal detection base (101), a detector (102) is installed inside the needle removal detection base (101), a needle removal detection cover (104) is coupled to the outer surface of the needle removal detection base (101), an alarm indicator light (108) is provided near the center of the outer surface of the needle removal detection cover (104), and a reset button (106) is provided on the outer surface of the needle removal detection cover (104). The positioning component (2) includes a puncture needle body (201), a positioning clip (202) is fixedly sleeved on the outer surface of the puncture needle body (201), and a first tilt sensor (206) is also provided on the outer surface of the puncture needle body (201). The reset assembly (3) includes a support plate (301), and four magnet clamps (302) are fixedly installed on one outer surface of the support plate (301). Neodymium magnets (303) are fixedly embedded between the inner walls of the four magnet clamps (302), and a second tilt sensor (305) is provided on the outer surface of the neodymium magnets (303).

2. The real-time monitoring system for anti-slip needles based on Hall magnetic field ranging according to claim 1, characterized in that: The detection component (1) also includes a protective cover (110), a charging port (103) is provided on one outer surface of the needle removal detection base (101), and a switch (105) is provided on the outer surface of the needle removal detection base (101).

3. The real-time monitoring system for anti-slip needles based on Hall magnetic field ranging according to claim 2, characterized in that: A low power indicator (107) is provided on one side edge of the outer surface of the needle removal detection cover (104), and a charging indicator (109) is provided on the other side edge of the outer surface of the needle removal detection cover (104).

4. The real-time monitoring system for anti-slip needles based on Hall magnetic field ranging according to claim 3, characterized in that: The inner wall of the positioning clamp (202) is rotatably connected to a rotating connector (203), and the outer surface of the puncture needle body (201) is fixedly fitted with an installation sleeve (204), and the outer surface of the installation sleeve (204) is fixed with an installation platform (205).

5. The anti-slip needle real-time monitoring system based on Hall magnetic field ranging according to claim 4, characterized in that: The reset assembly (3) also includes a mounting bracket (307), the inner wall of which is provided with a drive motor (308), and the output end of the drive motor (308) is fixedly connected to a drive rod (309).

6. The anti-slip needle real-time monitoring system based on Hall magnetic field ranging according to claim 5, characterized in that: The drive rod (309) is fixedly fitted with a drive gear (310) on its outer surface. The drive gear (310) is meshed with a gear ring (306) on its outer surface. An indicator needle (304) is fixed near the center of the outer surface of the neodymium magnet (303).

7. The real-time monitoring system for anti-slip needles based on Hall magnetic field ranging according to claim 6, characterized in that: The inner walls of the protective cover (110) are fixedly connected to the outer surfaces of the two sides of the needle removal detection base (101) by screws, and the outer surface of the positioning clamp (202) is fixedly connected to the inner wall of the protective cover (110) by screws.

8. The anti-slip needle real-time monitoring system based on Hall magnetic field ranging according to claim 7, characterized in that: The outer surface of the first tilt sensor (206) is coupled to the outer surface of the mounting platform (205), and both ends of the puncture needle body (201) extend to the outside of the protective cover (110).

9. The real-time monitoring system for anti-slip needles based on Hall magnetic field ranging according to claim 8, characterized in that: One end of the rotating connector (203) is fixedly connected to the outer surface of the other side of the support plate (301), the outer surface of the second tilt sensor (305) is coupled to the outer surface of the indicator needle (304), the outer surface of the support plate (301) is fixedly connected to the outer surface of the toothed ring (306), the outer surface of the mounting bracket (307) is fixedly connected to the inner wall of the protective cover (110), and one end of the drive rod (309) extends movably through to the outside of the mounting bracket (307).

10. The anti-slip needle real-time monitoring system based on Hall magnetic field ranging according to claim 9, characterized in that: Also includes: Control unit (4), dynamic threshold module (5), permanent magnet unit (6), triaxial Hall sensor module (7), multi-level alarm unit (8) and temperature compensation module (9).

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