Intelligent self-adjusting splint for fracture

Abstract

The intelligent self-adjusting splint comprises an upper fixing plate, a lower fixing plate and a side fixing plate, the upper fixing plate is provided with a regulation and control system and an internal binding mechanism, and the regulation and control system is integrated with sensors for detecting oxyhemoglobin saturation, pressure, temperature and humidity and is connected with a display regulation and control screen; the binding mechanism drives a binding belt to be synchronously wound and unwound through an adjusting motor and a gear set. The splint can automatically adjust the tightness according to physiological data monitored in real time so as to adapt to swell change of an affected limb; and a manual adjusting knob and an electromagnetic locking and emergency releasing mechanism are arranged, so that excessive compression or infirm fixation is effectively avoided, and the treatment safety and the comfort level of a patient are improved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an intelligent self-adjusting splint for fractures. Background Technology

[0002] Fractures, the leading cause of orthopedic complications, have long posed a threat to human health. Furthermore, with modern industrialization and an aging population, fractures have become a global public health issue. The application of traditional Chinese medicine (TCM) splints is a representative method of conservative treatment. Splint fixation is a flexible fixation technique using external fixation devices, and it is one of the commonly used and effective methods for treating closed fractures. Compared to plaster cast fixation, TCM splint fixation indirectly fixes the fracture through muscle action. It utilizes the combined force of the bandages and splints to control displacement and separation of the fracture ends, finding a balance between fracture fixation strength and fracture healing. The tightness of the bandages can be dynamically adjusted according to changes in limb swelling. In contrast, once plaster casts are set, they cannot be adjusted, easily leading to compartment syndrome during the swelling period, and becoming ineffective due to excessive looseness after the swelling subsides.

[0003] However, traditional small splint fixation techniques still face significant bottlenecks in clinical application: First, there is a lack of quantitative standards for precise control of splint clamping force, and no objective indicators exist for when to adjust tightness. Currently, the adjustment of small splint fixation tightness relies entirely on the clinical experience of medical staff or the subjective feelings of patients. This not only requires operators to accurately grasp the biomechanical mechanisms of fracture fixation but also places extremely high demands on their clinical experience—clamping too tightly can easily compress blood vessels and nerves, inducing complications such as limb ischemia and sensory abnormalities; fixation too loosely makes it difficult to maintain the stability of the fracture ends, easily causing fracture redisplacement and seriously affecting the healing process. Second, the degree of swelling in the affected limb changes dynamically during fracture healing, and the tightness of the splint needs to be adjusted in real time. However, most patients lack the ability to adjust themselves and are unwilling to have frequent follow-up visits for adjustments due to inconvenience in seeking medical treatment. This makes it very easy for the splint to loosen and fall off or for the fracture to redisplace due to improper tightness, which not only delays fracture healing and prolongs the rehabilitation period but may also cause a series of medical safety hazards.

[0004] In summary, developing an intelligent splint system that integrates a biocompatible strain sensing module and a miniature intelligent drive unit to achieve real-time monitoring of the mechanical state and swelling of the affected limb and automatically adjust the tension of the bandage accordingly has become a key requirement for breaking through the bottleneck of traditional small splint applications and improving the treatment effect of fracture fixation. Summary of the Invention

[0005] The purpose of this invention is to provide an intelligent self-adjusting splint for fractures, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following solution: A smart self-adjusting splint for fractures includes an upper fixation plate, a lower fixation plate, and two sets of side fixation plates; The upper fixed plate is equipped with a control system, which includes a display control screen and an integrated detection module that is connected to the display control screen for signal transmission. The upper fixing plate has a through notch, and the integrated detection module is inserted into the notch. The integrated detection module can detect the blood flow rate in the patient's arm. The upper fixing plate is provided with a binding mechanism inside. The binding mechanism is connected to the control system by a signal. The control system can adjust the working state of the binding mechanism according to the blood flow rate detected by the integrated detection module. Several straps are threaded through both sides of the upper fixing plate. The straps on both sides pass through the two sets of side fixing plates and are connected to both sides of the lower fixing plate respectively. The straps are inserted into the interior of the upper fixing plate and connected to the fastening mechanism.

[0007] Furthermore, the integrated detection module includes a photoelectric sensor, a pressure sensor, and a temperature and humidity sensor. The photoelectric sensor is used to detect blood flow rate, the pressure sensor is used to detect pressure, and the temperature and humidity sensor is used to detect temperature and humidity.

[0008] Furthermore, the upper fixing plate has a cavity inside for accommodating the binding mechanism; The binding mechanism includes an adjusting motor, a first transmission shaft, a first driving bevel gear, and two sets of transmission mechanisms. The regulating motor is mounted on the upper fixed plate, and the output end of the regulating motor is connected to the first transmission shaft. The first transmission shaft passes through the cavity and is fitted with the first active bevel gear. The two sets of transmission mechanisms are symmetrically distributed and respectively connected to the first active bevel gear transmission; The straps located on both sides are respectively connected to the two sets of transmission mechanisms.

[0009] Furthermore, the transmission mechanism includes a first driven bevel gear, a second transmission shaft, a second driven bevel gear, a third driven bevel gear, and a third transmission shaft; The first driven bevel gear meshes with the first driving bevel gear, and the first driven bevel gear is connected to the second driven bevel gear through the second transmission shaft; The second driven bevel gear meshes with the third driven bevel gear, and the third drive shaft passes through the third driven bevel gear; The first drive shaft, the second drive shaft, and the third drive shaft are arranged perpendicularly to each other in pairs; The strap is wrapped around the third drive shaft.

[0010] Furthermore, the regulating motor is provided with an adjusting knob, which covers the regulating motor and is connected to it. The bottom end of the adjusting knob has a hole through which the first drive shaft passes.

[0011] Furthermore, an electromagnet is embedded in the upper fixed plate at the position of the adjustment knob, and an iron ring is embedded in the bottom end of the adjustment knob. The iron ring corresponds to the electromagnet, and the electromagnet is electrically connected to the control system.

[0012] Furthermore, the display control screen is equipped with a buzzer alarm and several control buttons; The various control buttons are used to control the working state of the binding mechanism.

[0013] Furthermore, the upper fixing plate is a two-layer cover structure.

[0014] Furthermore, a bearing is fitted onto the third drive shaft, and the third drive shaft can reciprocate within the cavity along its arrangement direction; A clutch slide button is slidably provided on the upper fixed plate along the layout direction of the third transmission shaft. The clutch slide button passes through the cavity and is fixedly connected to the outer ring side wall of the bearing.

[0015] Furthermore, a power module is provided inside the display control screen, and a charging interface is provided at the end of the display control screen; The charging interface is electrically connected to both the power module and the display control screen, and the display control screen can display the remaining power of the power module.

[0016] As can be seen from the above technical solution, compared with the prior art, the beneficial effects of the present invention are as follows: This invention achieves closed-loop intelligent adjustment based on physiological parameters, significantly improving treatment safety and effectiveness. Traditional splints mainly rely on manual experience for adjustment, making it difficult to adapt to the dynamic changes in limb swelling after a fracture in real time. There is a risk of excessive pressure leading to limb ischemia, or excessive looseness leading to fracture re-displacement. This invention, by integrating photoelectric and pressure sensors, can monitor blood flow velocity and pressure at the affected area in real time and automatically control the motor to synchronously tighten or loosen the bandage, ensuring the splint is always maintained within the optimal tightness range. This effectively avoids complications caused by excessive pressure or inadequate fixation.

[0017] Equipped with multiple safety protection mechanisms to enhance system reliability, this invention features a continuous alarm function for abnormalities. When blood oxygen or pressure fails to return to normal levels for an extended period, an alarm is automatically triggered to alert for timely intervention. Simultaneously, the device integrates a mechanical quick-release clutch slider and an automatic reset function upon power failure, ensuring rapid release of the splint in emergencies such as circuit failure or power depletion, providing a final safety guarantee for the patient.

[0018] With optimized structural design, uniform force distribution, and ease of use, the synchronous transmission of a single motor and bevel gear set ensures consistent force on the straps, solving the problem of uneven force distribution in traditional manual adjustments. Furthermore, the integrated manual and automatic dual-mode interactive system facilitates quick initial fixation by medical staff while supporting long-term automatic monitoring, significantly reducing the workload of medical staff and the frequency of patient visits, demonstrating significant clinical application value. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the intelligent self-adjusting clamp of the present invention; Figure 2 This is a schematic diagram of the structure of the upper fixing plate and the side fixing plate in this invention. Figure 3 This is a cross-sectional view of the internal structure of the upper fixing plate in this invention; Figure 4 This is a side sectional view of the intelligent self-adjusting clamp in this invention; Figure 5 for Figure 4 A magnified view of part A in the image; Figure 6 This is a schematic diagram of the transmission relationship of the binding mechanism in this invention.

[0021] Explanation of reference numerals in the attached figures: 1. Upper fixing plate; 2. Side fixing plate; 3. Lower fixing plate; 4. First through hole; 5. Strap; 6. Control system; 7. Notch; 8. Integrated detection module; 9. Adjustment knob; 10. Adjustment motor; 11. First drive shaft; 12. First driving bevel gear; 13. Electromagnet; 14. Iron ring; 15. First output cavity; 16. First driven bevel gear; 17. Second drive shaft; 18. Second driven bevel gear; 19. Third driven bevel gear; 20. Third drive shaft; 21. Second output cavity; 22. With movable cavity. Detailed Implementation

[0022] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0023] Example 1 like Figures 1 to 6 As shown, this embodiment provides an intelligent self-adjusting splint for fractures. This embodiment is used for reduction and fixation after distal radius fracture. It should be noted that this embodiment is only one application of this technical solution and can also be used for other fracture sites.

[0024] The clamping plate includes an upper fixing plate 1, a lower fixing plate 3, and two sets of side fixing plates 2.

[0025] In this embodiment, the fixation plates are preferably made of breathable medical polymer fabric or rigid composite material, ensuring both rigidity and comfort. The upper fixation plate 1 corresponds to the dorsal side (anatomically anterior) of the forearm, the lower fixation plate 3 corresponds to the palmar side (anatomically posterior) of the forearm, and the two sets of lateral fixation plates 2 correspond to the radial (medial) and ulnar (lateral) sides of the forearm, respectively. The four fixation plates work together to form a space to accommodate the forearm, maintaining the anterior-posterior and medial-lateral reduction of the fracture ends.

[0026] like Figure 1 and Figure 2 As shown, the upper fixation plate 1 serves as the core carrier, and its size needs to be slightly thicker than other fixation plates to accommodate other components. The upper fixation plate 1 is equipped with a control system 6, which includes a display control screen and an integrated detection module 8. A through-hole 7 is formed in the upper fixation plate 1, located in the center of the upper fixation plate 1, near the wrist and radial side. The integrated detection module 8 is inserted into this through-hole 7, allowing its detection end to fit snugly against the patient's forearm skin and detect the blood flow velocity in the patient's arm.

[0027] Example 2 To improve detection accuracy and enhance patient comfort, this embodiment provides the specific structure of the integrated detection module 8 in Embodiment 1: The integrated detection module 8 integrates a photoelectric sensor, a pressure sensor, and a temperature and humidity sensor.

[0028] Photoelectric sensors are used to emit and receive light of specific wavelengths and calculate blood oxygen saturation (SpO2) or blood flow rate by detecting data such as the light absorbance of subcutaneous blood. Pressure sensors are used to monitor the pressure of the splint on the skin surface in real time, and temperature and humidity sensors are used to monitor the local temperature and humidity of the fracture site.

[0029] Example 3 like Figure 3 , Figure 4 and Figure 6 As shown, the upper fixing plate 1 has a binding mechanism inside, which is used to drive the strap 5 to tighten or loosen. The upper fixing plate 1 is specifically designed as a two-layer cover structure, with a cavity inside to accommodate the binding mechanism.

[0030] The binding mechanism includes an adjusting motor 10, a first drive shaft 11, a first drive bevel gear 12, and two sets of transmission mechanisms. The adjusting motor 10 is mounted on the upper fixed plate 1, and its output end is connected to the first drive shaft 11. The first drive shaft 11 passes through the cavity and is fitted with the first drive bevel gear 12.

[0031] Two sets of transmission mechanisms are symmetrically distributed on both sides of the first driving bevel gear 12, and are used to control the synchronous release and retraction of the left and right straps 5 to ensure uniform force distribution. Each set of transmission mechanisms includes a first driven bevel gear 16, a second transmission shaft 17, a second driven bevel gear 18, a third driven bevel gear 19, and a third transmission shaft 20.

[0032] The first driven bevel gear 16 meshes with the first driving bevel gear 12, and the first driven bevel gear 16 is connected to the second driven bevel gear 18 through the second drive shaft 17; the second driven bevel gear 18 meshes with the third driven bevel gear 19, and the third drive shaft 20 passes through the third driven bevel gear 19. The first drive shaft 11, the second drive shaft 17, and the third drive shaft 20 are arranged perpendicularly to each other, forming a highly efficient reversing transmission structure.

[0033] The strap 5 is a flexible elastic band with good elasticity and tensile strength. One end of the strap 5 passes through the belt movement cavity 22 inside the upper fixing plate 1 and is fixedly wound around the corresponding third drive shaft 20; the other end of the strap 5 passes through the pre-set first through hole 4 on the side fixing plate 2 and is finally anchored to both sides of the lower fixing plate 3. When the adjusting motor 10 rotates, it drives the third drive shaft 20 to rotate through the transmission, thereby winding or releasing the strap 5 to adjust the overall tightness of the clamp.

[0034] Specifically, the cavity includes a first output cavity 15 and a second output cavity 21. The first output cavity 15 is used to accommodate a first driving bevel gear 12 and a first driven bevel gear 16. The second output cavity 21 is used to accommodate a second driven bevel gear 18, a third driven bevel gear 19 and a third drive shaft 20. The third drive shaft is rotatably disposed in the second output cavity 21, and the second drive shaft 17 is rotatably disposed between the first output cavity 15 and the second output cavity 21.

[0035] Example 4 To balance the intuitiveness of manual adjustment with the convenience of automatic adjustment, this embodiment features an integrated adjustment knob structure.

[0036] An adjustment knob 9 is provided on the adjustment motor 10. The adjustment knob 9 covers the adjustment motor 10 and is connected to the adjustment motor 10. The bottom end of the adjustment knob 9 has a hole for the first drive shaft 11 to pass through.

[0037] In manual mode, the user can directly rotate the adjustment knob 9, which drives the adjustment motor 10 to rotate via mechanical transmission, thereby driving the third transmission shaft 20 to rotate, thus enabling manual tightening and loosening of the strap 5.

[0038] In automatic mode, to prevent accidental operation of the knob by the user and interference with motor operation, an electromagnet 13 is embedded in the upper fixed plate 1 at the position of the adjustment knob 9, and an iron ring 14 is embedded in the bottom of the adjustment knob 9. When the system is in automatic mode, the electromagnet 13 is energized and attracts the iron ring 14, generating a damping force to lock the adjustment knob 9; when switching to manual mode, the electromagnet 13 is de-energized and the adjustment knob 9 is released.

[0039] Example 5 Considering the safety of medical devices, this embodiment adds a dual safety protection mechanism.

[0040] Mechanical release: A bearing is fitted onto the third drive shaft 20, and the third drive shaft 20 can reciprocate within the cavity (i.e., the second output cavity 21) along its layout direction. A clutch slide button is slidably mounted on the upper fixed plate 1 along the layout direction of the third drive shaft 20. The clutch slide button passes through the cavity and is fixedly connected to the outer ring sidewall of the bearing. In case of emergency (such as motor jamming or severe swelling requiring quick release), the user can push the clutch slide button to move the third drive shaft 20, causing the third driven bevel gear 19 to disengage from the second driven bevel gear 18, thereby disconnecting the power transmission. At this time, the strap 5 can be freely pulled out, achieving rapid release.

[0041] Power failure reset: The system has a power failure protection logic. When the power is exhausted or the system is powered off, the control circuit will automatically control the motor to reverse (or restore the strap 5 to the default initial length, i.e., the maximum slack, through the mechanical reset spring) to prevent the splint from continuing to tighten on the limb after the power is off.

[0042] like Figure 1 As shown, a charging interface 23, preferably a Type-C interface, is provided at the end (near end) of the display control screen, and a rechargeable power module, such as a lithium battery, is installed inside. The charging interface 23 is electrically connected to both the power module and the display control screen, and the remaining power of the power module can be displayed in real time on the UI interface of the display control screen. A buzzer alarm is also provided on the display control screen.

[0043] Example 6 Based on the aforementioned hardware, the control system 6 of the present invention has four mutually exclusive operating modes, which can be switched via control buttons on the display control screen: Reset Mode (Default / Power Off): Press and hold the corresponding control button for 6 seconds, and strap 5 will automatically return to its longest position (default initial length). At this time, the clamp is in its most relaxed state, making it easy to put on or remove.

[0044] Manual mode: Press and hold the corresponding control button for 3 seconds (reset mode must be released first). Electromagnet 13 will be de-energized, releasing the knob lock. The user rotates the adjustment knob 9 to manually adjust the strap length. Medical staff can adjust the splint to a roughly suitable tightness based on experience.

[0045] Automatic mode (locked mode): Press and hold the corresponding control button for 3 seconds (manual mode must be deactivated first), electromagnet 13 is energized to lock the knob. The system uses data from integrated detection module 8 for real-time closed-loop control. If the integrated detection module 8 detects that the blood flow rate (or blood oxygen saturation) is lower than the preset lower limit, it determines that the compression is too heavy, controls the motor to loosen the straps until the blood flow rate (or blood oxygen) returns to the normal range.

[0046] If the detected pressure value is lower than the preset lower limit, it is determined that the fixation is loose, and the motor is controlled to tighten the strap until the effective fixation pressure is reached.

[0047] The display screen shows various parameters in real time, with normal values ​​in white and abnormal values ​​in red.

[0048] Emergency Mode: Press and hold the corresponding control button for 6 seconds to control the motor to quickly release the strap to the initial length or drive the mechanical clutch mechanism to disengage in case of an emergency.

[0049] Alarm logic: The built-in timer will sound a continuous alarm if the blood flow rate (or blood oxygen saturation) or pressure value is outside the normal range for more than 1 hour (even after automatic adjustment is ineffective), and will display "Please check" on the screen to remind the patient to seek medical attention promptly.

[0050] Example 7 To more clearly illustrate the application of this invention, the following provides the usage process of the smart clamp: Wearing: In the initial restoration mode, wear the splint on the affected limb, with the four fixation plates placed on the front, back, inner and outer sides of the forearm respectively.

[0051] Power on: Press and hold the button for 6 seconds to exit restore mode, the system will start up, and the display screen will light up.

[0052] Pre-tightening: Press and hold the button for 3 seconds to enter manual mode, rotate the adjustment knob 9 to tighten the strap, and adjust to the initial fixation position.

[0053] Automatic adjustment: Press and hold the button for 3 seconds to exit manual mode, then press and hold for another 3 seconds to enter automatic mode. In this mode, the system takes over and fine-tunes the tightness based on blood oxygen (or blood flow rate) and pressure.

[0054] Home monitoring: After the patient leaves the hospital, the splint remains in automatic mode, and the display screen shows various physiological parameters and battery level in real time.

[0055] Follow-up / Removal: If removal is required during a patient's follow-up examination, press and hold for 6 seconds to enter the restoration mode. The splint will automatically release and can be cleaned and disinfected after removal. It can then be charged for later use.

[0056] This invention, through the combination of the above-mentioned structural design and control logic, realizes intelligent fracture fixation based on physiological parameter feedback, effectively solving the problem that traditional splints cannot adapt to changes in swelling in real time, and greatly improving the safety of treatment and patient comfort.

[0057] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. Furthermore, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A smart self-adjusting splint for fractures, characterized in that: It includes an upper fixing plate (1), a lower fixing plate (3), and two sets of side fixing plates (2); The upper fixed plate (1) is provided with a control system (6), which includes a display control screen and an integrated detection module (8) connected to the display control screen. The upper fixing plate (1) has a through notch (7), and the integrated detection module (8) is inserted into the notch (7). The integrated detection module (8) can detect the blood flow rate of the patient's arm. The upper fixing plate (1) is provided with a binding mechanism inside. The binding mechanism is connected to the control system (6) by signal. The control system (6) can adjust the working state of the binding mechanism according to the blood flow rate detected by the integrated detection module (8). Several straps (5) are threaded through both sides of the upper fixing plate (1). The straps (5) on both sides pass through the two sets of side fixing plates (2) and are connected to both sides of the lower fixing plate (3). The strap (5) passes through the interior of the upper fixing plate (1) and connects to the binding mechanism.

2. The intelligent self-adjusting splint for fractures according to claim 1, characterized in that: The integrated detection module (8) includes a photoelectric sensor, a pressure sensor, and a temperature and humidity sensor. The photoelectric sensor is used to detect blood flow rate, the pressure sensor is used to detect pressure, and the temperature and humidity sensor is used to detect temperature and humidity.

3. The intelligent self-adjusting splint for fractures according to claim 1, characterized in that: The upper fixing plate (1) has a cavity inside for accommodating the binding mechanism; The binding mechanism includes an adjusting motor (10), a first transmission shaft (11), a first driving bevel gear (12), and two sets of transmission mechanisms; The regulating motor (10) is mounted on the upper fixed plate (1). The output end of the regulating motor (10) is connected to the first transmission shaft (11). The first transmission shaft (11) passes through the cavity and is fitted with the first active bevel gear (12). The two sets of transmission mechanisms are symmetrically distributed and respectively connected to the first active bevel gear (12); The straps (5) located on both sides are respectively connected to the two sets of transmission mechanisms.

4. The intelligent self-adjusting splint for fractures according to claim 3, characterized in that: The transmission mechanism includes a first driven bevel gear (16), a second transmission shaft (17), a second driven bevel gear (18), a third driven bevel gear (19), and a third transmission shaft (20). The first driven bevel gear (16) meshes with the first driving bevel gear (12), and the first driven bevel gear (16) is connected to the second driven bevel gear (18) through the second transmission shaft (17). The second driven bevel gear (18) meshes with the third driven bevel gear (19), and the third drive shaft (20) passes through the third driven bevel gear (19); The first drive shaft (11), the second drive shaft (17), and the third drive shaft (20) are arranged perpendicularly to each other in pairs; The strap (5) is wrapped around the third drive shaft (20).

5. The intelligent self-adjusting splint for fractures according to claim 3, characterized in that: The regulating motor (10) is provided with an adjusting knob (9), which covers the regulating motor (10) and is connected to the regulating motor (10). The bottom end of the adjusting knob has a hole for the first transmission shaft (11) to pass through.

6. The intelligent self-adjusting splint for fractures according to claim 5, characterized in that: An electromagnet (13) is embedded on the upper fixed plate (1) at the position of the adjustment knob (9). An iron ring (14) is embedded at the bottom of the adjustment knob (9). The iron ring (14) corresponds to the electromagnet (13). The electromagnet (13) is electrically connected to the control system (6).

7. The intelligent self-adjusting splint for fractures according to claim 1, characterized in that: The display control screen is equipped with a buzzer alarm and several control buttons; The various control buttons are used to control the working state of the binding mechanism.

8. The intelligent self-adjusting splint for fractures according to claim 1, characterized in that: The upper fixing plate (1) is a two-layer cover structure.

9. The intelligent self-adjusting splint for fractures according to claim 4, characterized in that: The third drive shaft (20) is fitted with a bearing, and the third drive shaft (20) can reciprocate within the cavity along its layout direction; A clutch slide button is slidably provided on the upper fixed plate (1) along the arrangement direction of the third transmission shaft (20). The clutch slide button passes through the cavity and is fixedly connected to the outer ring side wall of the bearing.

10. The intelligent self-adjusting splint for fractures according to claim 1, characterized in that: The display control screen is equipped with a power module inside, and a charging interface (23) is provided at the end of the display control screen. The charging interface (23) is electrically connected to both the power module and the display control screen, and the display control screen can display the remaining power of the power module.

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