Intelligent bandage integrating wound monitoring, drug administration and electrical stimulation

Abstract

The invention discloses an intelligent bandage integrating wound monitoring, drug administration and electrical stimulation. The intelligent bandage comprises a bandage body, a portable battery, a wound monitoring module, an intelligent drug administration module, an electrical stimulation module and a portable control module. The bandage body is of a double-layer structure, the inner layer is an antibacterial fiber layer, and the outer layer is a breathable waterproof layer. By means of the design, the wound can be kept dry, and external bacteria can be prevented from invading. The bandage body is further provided with a bandage elastic area which is used for adjusting the tightness of the bandage so as to meet the requirements of different wound parts. 3-6 sensors are arranged on the inner surface of the bandage body and used for monitoring key physiological indexes of a wound in real time, and accurate information is provided for treatment. The intelligent drug delivery module adopts a drug-loaded stimuli-responsive electroactive hydrogel fiber array and is arranged on the inner surface of the bandage body, and accurate drug delivery is achieved through a voltage modulation electrode. The electrical stimulation module adopts a pseudo convergence electric field configuration, is arranged on the inner surface of the bandage body, and is switched between the electrical stimulation electrodes through a timing relay so as to alternately push the wound to be closed. The portable battery supplies power to the portable control module, and the portable control module comprises an integrated microprocessor module, a wireless communication module and a lumped power management module and is connected with the intelligent drug delivery module, the wound monitoring module and the electrical stimulation module to achieve remote monitoring and personalized treatment.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to an intelligent bandage integrating wound monitoring, drug administration and electrical stimulation. Background Art

[0002] Wound care and treatment have long been a research focus in the medical field. While traditional wound care methods, such as regular dressing changes, wound cleaning, and topical medications, can promote wound healing to a certain extent, their effectiveness is often limited for complex or chronic wounds. Furthermore, traditional wound care methods lack the ability to monitor wound status in real time, making it difficult for medical staff to promptly understand wound conditions and make appropriate treatment adjustments.

[0003] In recent years, with the continuous advancement of medical technology, smart bandages have gradually become a research hotspot in the field of wound care. Smart bandages can monitor wound status in real time, providing medical staff with accurate wound information to guide the formulation and adjustment of treatment plans. However, most smart bandages currently on the market only have single functions, such as monitoring wound physiological indicators or drug delivery, and cannot meet the comprehensive needs of complex wound treatment.

[0004] In response to the above problems, the present invention proposes a smart bandage that integrates wound monitoring, drug delivery and electrical stimulation. In terms of wound monitoring, the present invention can monitor the temperature, pH, NH4 + Key indicators such as glucose, lactate, and uric acid can be measured. These indicators can fully reflect the physiological environment and metabolic status of the wound, providing medical staff with accurate wound information to guide the formulation and adjustment of treatment plans.

[0005] In terms of drug delivery, the present invention uses a drug-loaded, stimuli-responsive electroactive hydrogel fiber embedded in the bandage through a weaving process. This hydrogel can control drug release by modulating the electrode voltage, achieving precise drug delivery.

[0006] In terms of electrical stimulation, most studies have used a "unidirectional electric field" configuration when exploring wound healing in vivo, that is, an electric field that corresponds to crossing the wound (i.e., a non-convergent field). This strategy is the easiest to implement because it only requires two electrodes, one on each side of the wound. However, in this case, the electrophoretic effect mainly acts on one side of the wound. In contrast, the present invention uses a "pseudo-convergent electric field" configuration. The electrical stimulation electrodes are respectively set on both sides of the wound, and switching between the electrical stimulation electrodes is performed by a timing relay to alternately push the wound to close from both sides. This type of electrical stimulation can stimulate the proliferation and differentiation of cells around the wound and accelerate the wound healing process. Summary of the Invention

[0007] The purpose of the present invention is to provide a smart bandage that integrates wound monitoring, drug delivery and electrical stimulation to address the technical defects in the prior art.

[0008] The technical solution adopted to achieve the purpose of the present invention is:

[0009] An intelligent bandage that integrates wound monitoring, drug delivery and electrical stimulation, including a bandage body, a portable battery, a wound monitoring module, an intelligent drug delivery module, an electrical stimulation module and a portable control module.

[0010] The wound monitoring module is arranged on the inner surface of the bandage body and includes 3 to 6 different physiological indicator monitoring sensors. These sensors are distributed on the inner surface of the bandage body and are positioned corresponding to the location of the wound. By monitoring changes in these data, it can fully reflect the physiological environment and metabolic state of the wound, providing medical staff with accurate and real-time wound information, thereby formulating more precise and effective treatment plans and dynamically adjusting the treatment plans according to the actual situation of the wound.

[0011] The intelligent drug delivery module is arranged on the inner surface of the bandage body and includes a stimulus-responsive electroactive hydrogel fiber array loaded with drugs, which is positioned corresponding to the location of the wound. The hydrogel is composed of an electrically responsive polymer. The charged groups or ions in its molecular chain undergo directional migration or conformational changes under the action of an electric field, causing the hydrogel to swell / contract or degrade, thereby releasing the loaded drug. The response behavior of the hydrogel can be precisely controlled by applying a DC or pulse voltage of a specific intensity through a voltage modulation electrode;

[0012] The electrical stimulation module is arranged on the inner surface of the bandage body and includes electrical stimulation electrodes and a timing relay. It adopts a "pseudo-convergent electric field" configuration. The electrical stimulation electrodes are arranged on the inner surface of the bandage body, and the positions correspond to the two sides of the wound. The timing relay switches between the electrical stimulation electrodes to alternately promote the closure of the wound from both sides. The electrical stimulation electrodes are used to stimulate the proliferation and differentiation of cells around the wound, thereby accelerating the wound healing process.

[0013] The portable control module is arranged inside the bandage body and includes an integrated microprocessor module, a wireless communication module, a multi-channel signal acquisition circuit, and a lumped power management module (including an overvoltage / overcurrent protection circuit). It is connected to the sensor, hydrogel fiber array and electrical stimulation electrodes through a flexible printed circuit board, and is used to precisely control the drug delivery system and electrical stimulation parameters. The wound healing status data is uploaded to the mobile phone and cloud server terminal through the wireless communication module.

[0014] In the above technical solution, the wound monitoring module, the intelligent drug delivery module and the electrical stimulation module can all work independently, taking different treatment measures according to the wound status without affecting each other.

[0015] In the above technical solution, the power management module adopts four-way DC-DC conversion circuits to independently power the microprocessor, sensor, electrical stimulation module and drug delivery module.

[0016] In the above technical solution, the bandage body adopts a double-layer structure, with an inner layer of antibacterial fiber and an outer layer of breathable and waterproof layer. This design not only keeps the wound dry but also prevents the invasion of external bacteria. Both the inner and outer layers are equipped with elastic bandage areas for adjusting the tightness of the bandage to suit different wound locations.

[0017] In the above technical solution, the portable battery is connected to the portable control module, and the portable control module is connected to the intelligent drug delivery module, the wound monitoring module and the electrical stimulation module.

[0018] In the above technical solution, the electrical stimulation electrodes are respectively arranged on the inner surface positions of the bandage body corresponding to the wound on both sides, and the timing relay is arranged on the area inside the bandage body that does not correspond to the wound.

[0019] In the above technical solution, the electrical stimulation module includes a constant current source circuit and is connected in series with a self-recovering fuse; the portion of the electrode in contact with the human body is coated with a biocompatible insulating coating.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The smart bandage of the present invention integrates wound monitoring, drug delivery and electrical stimulation, and can monitor the temperature, pH and NH4 of the wound in real time through the integrated monitoring system. + Key physiological indicators include glucose, lactate, and uric acid. These indicators are crucial for assessing wound healing status, infection risk, and metabolic activity. Real-time monitoring can promptly detect wound abnormalities, providing doctors with a basis for timely intervention, thereby effectively preventing wound infection and other complications.

[0022] 2. The present invention's smart bandage, which integrates wound monitoring, drug delivery, and electrical stimulation, incorporates a drug-loaded stimuli-responsive electroactive hydrogel fiber array embedded within the bandage. This design allows for more even drug coverage of the wound, improving drug utilization and therapeutic efficacy. The stimuli-responsive electroactive hydrogel fibers intelligently release the drug based on changes in the wound's physiological environment by controlling voltage-modulated electrodes, enabling precise drug delivery and reducing drug waste and side effects.

[0023] 3. The smart bandage of the present invention, which integrates wound monitoring, drug delivery and electrical stimulation, adopts a "pseudo-convergent electric field" configuration. The electrical stimulation electrodes are located on both sides of the wound, and the timing relay switches between the electrical stimulation electrodes to alternately push the wound to close from both sides. This type of electrical stimulation can simulate the natural wound healing process and promote cell proliferation and migration. Electrical stimulation therapy can not only accelerate the healing speed of the wound, but also improve the quality of wound healing and reduce the formation of scars. Compared with traditional electrical stimulation therapy, the "pseudo-convergent electric field" configuration of the present invention is more flexible and efficient, and can perform personalized treatment according to the actual situation of the wound.

[0024] 4. The present invention's smart bandage, which integrates wound monitoring, drug delivery, and electrical stimulation, integrates multiple functions into one, enabling an intelligent and convenient treatment process. Doctors can obtain real-time wound monitoring data through a remote monitoring system and adjust treatment plans based on the data. When using this invention, patients do not need to frequently change bandages or perform complex operations, greatly improving the convenience of treatment and patient comfort. In addition, the smart bandage of the present invention is easy to wear, remove, and clean, making it convenient for patients to use and care for their wounds.

[0025] 5. The present invention's smart bandage, which integrates wound monitoring, drug delivery, and electrical stimulation, significantly improves wound treatment effectiveness, shortens healing time, and reduces the risk of infection and other complications through the combined application of real-time monitoring, precise drug delivery, and personalized electrical stimulation therapy. Furthermore, due to its highly automated and intelligent features, the present invention's smart bandage can reduce the workload of medical personnel and the waste of medical resources, thereby lowering medical costs.

[0026] 6. The smart bandage of the present invention, which integrates wound monitoring, drug administration and electrical stimulation, ensures stable operation of the system in humid environments (protection level IP67) through a multi-level power management architecture and redundant safety design, while avoiding the risk of electrical stimulation overload; in addition, the programmable parameter design enables the treatment strategy to dynamically match the wound status (such as automatically increasing the drug administration voltage by 20% when infected, and triggering high-frequency electrical stimulation when the pH is abnormal). BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Shown is a schematic diagram of the external structure of the smart bandage of the present invention that integrates wound monitoring, drug delivery and electrical stimulation.

[0028] Figure 2 Shown is a schematic diagram of the internal structure of the smart bandage of the present invention that integrates wound monitoring, drug delivery and electrical stimulation.

[0029] Figure 3 Shown is a schematic structural diagram of the wound monitoring module of the smart bandage that integrates wound monitoring, drug delivery and electrical stimulation according to the present invention.

[0030] Figure 4 Shown is a schematic structural diagram of the intelligent drug delivery module of the intelligent bandage that integrates wound monitoring, drug delivery and electrical stimulation of the present invention.

[0031] Figure 5 Shown is a schematic structural diagram of the electrical stimulation module of the smart bandage that integrates wound monitoring, drug delivery and electrical stimulation according to the present invention.

[0032] Figure 6 Shown is a schematic diagram of the overall circuit structure of the smart bandage of the present invention that integrates wound monitoring, drug delivery and electrical stimulation.

[0033] Figure 7 Shown is a diagram showing the working principle of the smart bandage of the present invention that integrates wound monitoring, drug delivery and electrical stimulation.

[0034] In the figure: 1 antibacterial fiber layer of the bandage body, 2 breathable and waterproof layer of the bandage body, 3-1 first elastic area of the bandage, 3-2 second elastic area of the bandage, 4-1 latitudinal intelligent drug delivery module integrated circuit, 4-2 warp intelligent drug delivery module integrated circuit, 5 portable control module, 6 portable battery, 7 timer relay, 8-1 temperature sensor, 8-2 pH sensor, 8-3 NH4 + Sensor, 8-4 glucose sensor, 8-5 lactate sensor, 8-6 uric acid sensor, 8-7 reference electrode, 8-8 counter electrode, 9-1 first electrical stimulation electrode, 9-2 second electrical stimulation electrode, 10 wound monitoring module and electrical stimulation module integrated circuit. DETAILED DESCRIPTION

[0035] The present invention will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0036] Example 1

[0037] See also Figure 1-6 , an intelligent bandage integrating wound monitoring, drug delivery and electrical stimulation, including a bandage body, a portable battery 6, a wound monitoring module, an intelligent drug delivery module, an electrical stimulation module and a portable control module 5.

[0038] The bandage's antibacterial fiber layer 1 is knitted from antibacterial fibers to enhance elasticity and reduce bacterial growth. A first elastic region 3-1 is provided on the bandage's antibacterial fiber layer 1 for adjusting the tightness of the bandage to suit different wound locations.

[0039] The wound monitoring module is arranged on the inner surface of the antibacterial fiber layer 1 of the bandage body, and includes a temperature sensor 8-1, a pH sensor 8-2, an NH4+ Sensor 8-3, glucose sensor 8-4, lactate sensor 8-5, uric acid sensor 8-6, reference electrode 8-7 and counter electrode 8-8. Their positions correspond to the location of the wound. By monitoring the changes in these data, the physiological environment and metabolic state of the wound can be fully reflected. Among them, the size of the sensors are all circular sensors with a diameter of 0.5 cm, the temperature sensor accuracy is ±0.1℃ (range 25-45℃), the pH sensor range is 4.0-9.0 (error ±0.1), NH4 + The detection limits of the sensors for glucose, lactate, and uric acid were 0.1 mM, 0.5 mM, 0.2 mM, and 0.3 mM, respectively.

[0040] The intelligent drug delivery module is positioned on the inner surface of the antimicrobial fiber layer 1 of the bandage body and includes a latitudinal intelligent drug delivery module integrated circuit 4-1 and a longitudinal intelligent drug delivery module integrated circuit 4-2. The stimuli-responsive electroactive hydrogel fiber array, loaded with dual-functional anti-inflammatory and antimicrobial peptides, is positioned relative to the wound site. The hydrogel is composed of an electrically responsive polymer (such as polypyrrole, polyaniline, or an ionomer). Charged groups or ions within its molecular chains undergo directional migration or conformational changes under the influence of an electric field, causing the hydrogel to swell / contract or degrade, thereby releasing the loaded drug. By applying a specific DC or pulsed voltage (e.g., in the range of 0.1-5V and a frequency of 1-100Hz) via a voltage-modulated electrode, the hydrogel's responsive behavior can be precisely controlled: 1) Voltage intensity: The higher the voltage, the greater the hydrogel's responsiveness and the faster the drug release rate; 2) Pulse frequency: High-frequency pulses promote periodic deformation of the hydrogel, enabling staged drug release; and 3) Duration: Continuous application of power maintains stable drug release, while intermittent application enables on-demand drug delivery. The electrodes are in direct contact with the hydrogel fibers, forming a closed circuit. When the microprocessor in the portable control module 5 determines that drug release is necessary based on wound monitoring data (elevated pH or infection markers), the lumped power management module outputs preset voltage parameters to the electrodes, driving the hydrogel to release the drug. Furthermore, the system supports closed-loop feedback control: when the sensor detects abnormal drug concentration or wound environment, the voltage parameters are automatically adjusted to optimize the release dose.

[0041] The electrical stimulation module is arranged on the inner surface of the antibacterial fiber layer 1 of the bandage body, and includes two electrical stimulation electrodes (a first electrical stimulation electrode 9-1 and a second electrical stimulation electrode 9-2) and a timing relay 7. The first electrical stimulation electrode 9-1 and the second electrical stimulation electrode 9-2 are respectively arranged on the inner surface of the antibacterial fiber layer 1 of the bandage body, corresponding to the two sides of the wound. The timing relay 7 is arranged inside the bandage, on an area that does not correspond to the wound. By switching between the first electrical stimulation electrode and the second electrical stimulation electrode through the timing relay 7, the wound is alternately pushed to close from both sides, and the electrical stimulation electrodes are used to stimulate the proliferation and differentiation of cells around the wound, thereby accelerating the wound healing process. Among them, the electrical stimulation electrodes are all circular electrodes with a diameter of 1 cm.

[0042] The portable control module 5 is disposed outside the antibacterial fiber layer 1 of the bandage body and is used to achieve wireless data transmission and efficient power management. The portable control module 5 includes an integrated microprocessor module, a wireless communication module, and a lumped power management module. The portable control module 5 is connected to the latitudinal intelligent drug delivery module integrated circuit 4-1, the warp intelligent drug delivery module integrated circuit 4-2, the wound monitoring module, and the electrical stimulation module integrated circuit 10 via wires, and is used to precisely control the drug delivery system and electrical stimulation parameters. Through the wireless communication module, the portable control module 5 uploads wound healing status data to a mobile phone and a cloud server terminal. The wound monitoring module and electrical stimulation module integrated circuit 10 include a four-way DC-DC conversion circuit, a constant current source and an H-bridge drive circuit, an overcurrent protection fuse, a voltage modulation electrode control interface, and a multi-channel sensor signal conditioning circuit. The core circuit of the lumped power management module is a four-way DC-DC converter circuit that can convert a wide range of battery voltages into four output voltages to meet different load requirements. It uses the TI TPS63020 chip to achieve buck-boost DC-DC conversion with a conversion efficiency of ≥85% and an output ripple of <50mV. The microprocessor uses I 2 The C-bus controls a digital potentiometer (MCP4017) to adjust the drug delivery module voltage (0.1-5V, 0.1V increments). The electrostimulation electrode drive circuit utilizes an H-bridge topology (integrated with a DRV8837 chip), supports bidirectional pulse output (frequency 0.1-100Hz, duty cycle adjustable from 10-90%), and includes built-in current sampling feedback (accuracy ±1%). The wireless communication module connects to the microprocessor via an SPI interface, with a transmission range of 10 meters or more.

[0043] The portable battery 6 is a rechargeable lithium battery, which is connected to the portable control module 5 , has dimensions of 3cm×2cm×0.4cm, a capacity of 200mAh, and is arranged outside the antibacterial fiber layer 1 of the bandage body, on the right side of the portable control module 5 .

[0044] Example 2

[0045] Based on Example 1, the material and structure of the bandage body have been further optimized. The bandage body adopts a two-layer structure: an inner antimicrobial fiber layer 1 and an outer breathable and waterproof layer 2. This design not only keeps the wound dry but also prevents the intrusion of external bacteria. A second elastic bandage area 3-2 is provided above the breathable and waterproof layer 2, also used to adjust the tightness of the bandage to suit different wound locations.

[0046] At the same time, the wound monitoring module has been improved and the types and layouts of sensors have been increased. In addition to temperature sensors, pH sensors, NH4 + Sensors, glucose sensors, lactate sensors and uric acid sensors can also be added or replaced with sensors that can monitor other key physiological indicators of wounds as needed, and the layout of the sensors can be freely adjusted according to the size and location of the wound to achieve real-time monitoring of the wound.

[0047] Example 3

[0048] On the basis of Example 1, the intelligent drug delivery module was improved, the types of drugs and release methods were increased, and the scale of the intelligent drug delivery module can be freely adjusted. In addition to the dual-function anti-inflammatory and antimicrobial peptides, other drugs that can promote wound healing can be added according to the needs of the wound. In addition, the parameters of the voltage modulation electrode can be adjusted to achieve timed and quantitative release of drugs to further improve the therapeutic effect. At the same time, according to the size and location of the wound, the scale of the hydrogel fiber array can be freely adjusted to better cover the wound area to achieve the best therapeutic effect. Parameters of the pulse voltage applied by the voltage modulation electrode: rise time <10ms, single drug release amount 0.1-10μg / cm 2 (Linearly related to voltage intensity and duration); hydrogel response time ≤ 30s (25°C environment).

[0049] Example 4

[0050] Based on Example 1, portable battery 6 has been improved to incorporate a yarn zinc-air battery. This battery boasts high specific energy, simple manufacturing, low cost, safety, reliability, and recyclability, meeting the long-term use requirements of the smart bandage. Furthermore, its sewable design allows the battery to be stably secured to the bandage itself, improving portability and avoiding the potential safety hazards associated with traditional batteries due to movement or improper use, thereby enhancing the safety of the smart bandage. The yarn zinc-air battery has an output voltage of 1.6V, a capacity of 300mAh, and a continuous operating time of ≥72 hours (in standby mode). The charging module supports Qi wireless charging (input 5V / 1A).

[0051] Example 5

[0052] On the basis of Examples 1 to 3, personalized settings for the electrical stimulation module are added. The number, position and stimulation intensity of the electrical stimulation electrodes can be adjusted according to the size, location and type of the wound. For example, for larger wounds, the number of electrical stimulation electrodes can be increased to expand the stimulation range; for deeper wounds, the position of the electrical stimulation electrodes can be adjusted to be closer to the bottom of the wound; for different types of wounds (such as burns, cuts), the stimulation intensity can be adjusted to achieve the best treatment effect. The electrode spacing is 1-5cm (adaptively adjusted according to the size of the wound), the stimulation current is 0.1-5mA (safety threshold <10mA), and the timing relay switching interval is adjustable from 10-600s.

[0053] The portable control module 5 has also been upgraded with voice prompts and remote control capabilities. When the bandage detects an abnormality in the wound, it can provide a voice prompt to the patient or medical staff. Medical staff can also remotely control the bandage's medication administration and electrical stimulation parameters via a mobile phone or cloud server terminal, enabling remote monitoring and treatment.

[0054] Example 6

[0055] Based on Examples 1 to 4, see Figure 7 , describes in detail the working process of a smart bandage that integrates wound monitoring, drug delivery, and electrical stimulation:

[0056] Step 1: Wrap the antibacterial fiber layer 1 and the breathable and waterproof layer 2 of the bandage body around the wound, and adjust the first elastic area 3-1 and the second elastic area 3-2 of the bandage to suit the size and position of the wound.

[0057] Step 2: Use the portable battery 6 to power the portable control module 5, start the portable control module 5, and control the wound monitoring module to start working through the integrated microprocessor module. Each sensor starts to monitor the temperature, pH, NH4 + , glucose, lactate and uric acid data, and transmit the data to the portable control module 5.

[0058] In step 3, the portable control module 5 analyzes and processes the received data, adjusting the drug delivery parameters of the intelligent drug delivery module and the stimulation parameters of the electrical stimulation module based on the actual wound condition. For example, if the wound shows signs of infection, the release of anti-inflammatory drugs can be increased; if the wound is healing slowly, the stimulation intensity and frequency of the electrical stimulation electrodes can be adjusted.

[0059] Step 4: The portable control module 5 uploads the wound monitoring data and treatment results to the mobile phone and cloud server terminal through the wireless communication module. Medical staff can check the wound condition in real time and adjust the treatment plan as needed.

[0060] Step 5: During the wound healing process, the patient can regularly change the bandage or perform necessary cleaning and care. The portable control module 5 can record the wound healing process and treatment effect to provide a reference for subsequent treatment.

[0061] For ease of explanation, spatial relative terms such as "upper", "lower", "left", and "right" are used in the embodiments to illustrate the relationship between one element or feature shown in the figures and another element or feature. It should be understood that, in addition to the orientation shown in the figures, spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be positioned "above" other elements or features. Therefore, the exemplary term "under" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here can be interpreted accordingly.

[0062] Moreover, relational terms such as “first” and “second” are merely used to distinguish one component from another having the same name, but do not necessarily require or imply any actual relationship or order between these components.

[0063] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A smart bandage that integrates wound monitoring, drug delivery, and electrical stimulation, characterized in that: It includes a bandage body, a portable battery, a wound monitoring module, an intelligent drug delivery module, an electrical stimulation module and a portable control module. The wound monitoring module is arranged on the inner surface of the bandage body and includes 3 to 6 different physiological indicator monitoring sensors. These sensors are distributed on the inner surface of the bandage body and are positioned corresponding to the location of the wound. By monitoring changes in these data, it can fully reflect the physiological environment and metabolic state of the wound, providing medical staff with accurate and real-time wound information, thereby formulating more precise and effective treatment plans and dynamically adjusting the treatment plans according to the actual situation of the wound. The intelligent drug delivery module is arranged on the inner surface of the bandage body and includes a stimulus-responsive electroactive hydrogel fiber array loaded with drugs, which is positioned corresponding to the location of the wound. The hydrogel is composed of an electrically responsive polymer. The charged groups or ions in its molecular chain undergo directional migration or conformational changes under the action of an electric field, causing the hydrogel to swell / contract or degrade, thereby releasing the loaded drug. The response behavior of the hydrogel can be precisely controlled by applying a DC or pulse voltage of a specific intensity through a voltage modulation electrode; The electrical stimulation module is arranged on the inner surface of the bandage body and includes electrical stimulation electrodes and a timing relay. It adopts a "pseudo-convergent electric field" configuration. The electrical stimulation electrodes are arranged on the inner surface of the bandage body, and the positions correspond to the two sides of the wound. The timing relay switches between the electrical stimulation electrodes to alternately promote the closure of the wound from both sides. The electrical stimulation electrodes are used to stimulate the proliferation and differentiation of cells around the wound, thereby accelerating the wound healing process. The portable control module is arranged inside the bandage body and includes an integrated microprocessor module, a wireless communication module, a multi-channel signal acquisition circuit, and a lumped power management module (including an overvoltage / overcurrent protection circuit). It is connected to the sensor, hydrogel fiber array and electrical stimulation electrodes through a flexible printed circuit board, and is used to precisely control the drug delivery system and electrical stimulation parameters. The wound healing status data is uploaded to the mobile phone and cloud server terminal through the wireless communication module.

2. The smart bandage integrating wound monitoring, drug delivery and electrical stimulation according to claim 1, characterized in that: The wound monitoring module, intelligent drug delivery module and electrical stimulation module can all work independently, taking different treatment measures according to the wound status without affecting each other.

3. The smart bandage integrating wound monitoring, drug delivery and electrical stimulation according to claim 1, characterized in that: The power management module adopts four-way DC-DC conversion circuits to independently power the microprocessor, sensor, electrical stimulation module and drug delivery module.

4. The smart bandage integrating wound monitoring, drug delivery and electrical stimulation according to claim 1, characterized in that: The bandage body features a double-layer structure, with an inner antibacterial fiber layer and an outer breathable, waterproof layer. This design keeps the wound dry while preventing the intrusion of external bacteria. Both the inner and outer layers feature elastic bandage areas for adjusting the tightness of the bandage to suit different wound locations.

5. The smart bandage integrating wound monitoring, drug delivery and electrical stimulation according to claim 1, characterized in that: The portable battery is connected to the portable control module, and the portable control module is connected to the intelligent drug delivery module, the wound monitoring module and the electrical stimulation module.

6. The smart bandage integrating wound monitoring, drug delivery and electrical stimulation according to claim 1, characterized in that: The electrical stimulation electrodes are respectively arranged on the inner surface positions of the bandage body at both sides corresponding to the wound, and the timing relay is arranged on the area inside the bandage body that does not correspond to the wound.

7. The smart bandage integrating wound monitoring, drug delivery and electrical stimulation according to claim 1, characterized in that: The electrical stimulation module includes a constant current source circuit and is connected in series with a self-recovering fuse; the portion of the electrode in contact with the human body is coated with a biocompatible insulating coating.

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