Wound surface monitoring flexible sensing device

Abstract

The invention relates to the technical field of medicine, and discloses a wound surface monitoring flexible sensing device in order to solve the problem that the wound surface monitoring effect needs to be further improved in the prior art, the wound surface monitoring flexible sensing device comprises dressing and a sensor, the sensor is arranged on the side, not in direct contact with a wound surface, of the dressing, and the sensor is connected with the dressing. The sensors comprise a temperature and humidity sensor, a tension sensor and a color identification sensor, the temperature and humidity sensor is used for monitoring the temperature and humidity of the wound surface, the tension sensor is used for monitoring the tension of the wound surface, and the color sensor is used for monitoring the color of the wound surface. The flexible sensing device for wound surface monitoring can be applied to a wound surface, is used for covering the wound surface, can carry out index monitoring and information collection on the wound surface, has the functions of covering, binding, pressing, resisting bacteria, stopping bleeding and the like on the wound surface, also has the function of better mastering the microenvironment of the wound surface, and is convenient to use. Therefore, corresponding treatment can be carried out according to specific conditions of the wound, and wound recovery is promoted.

Description

Technical Field

[0001] The invention relates to the field of medical technology, and in particular to a flexible sensor device for wound surface monitoring. Background Art

[0002] For postoperative or traumatic wounds and wounds, current clinical evaluation is mainly based on visual observation and touch temperature perception. There is no quantitative standard, and the evaluation is relatively subjective and mainly driven by experience.

[0003] For some special and refractory wounds, doctors need to use more indicators to intervene in the wounds and wounds in time. In traditional medical work, the observation of wounds has many defects and shortcomings in terms of time, wound state, and intervention methods. In addition, the wounds and wounds need to be covered with dressings, which makes it impossible to grasp the changes in the wounds in time. Repeated and frequent dressing changes and exposure of wounds or wounds are not conducive to the recovery and healing of the wounds. It is also impossible to provide sufficient manpower clinically, and it also causes a waste of resources. In order to solve the above problems, combined with the development of sensor technology, wound monitoring related technologies have been developed. For example, CN201911291267.X discloses a wound monitoring device, which performs multi-in-one real-time monitoring of wound temperature, humidity, pH, electrical impedance and pressure information by setting sensors on a flexible substrate. However, the monitoring effect of the wound in the prior art needs to be further improved. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the present invention aims to provide a flexible sensing device for wound monitoring.

[0005] To achieve the above objectives, the present disclosure adopts the following technical solutions: A flexible sensing device for wound monitoring includes: a dressing, a sensor and an LED light. The sensor and the LED light are both arranged on a side of the dressing that is not in direct contact with the wound. The sensor includes a temperature and humidity sensor, a tension sensor and a color recognition sensor. The temperature and humidity sensor is used to monitor the temperature and humidity of the wound, the tension sensor is used to monitor the tension of the wound, the color sensor is used to monitor the color of the wound, and the LED light is used to illuminate the color recognition sensor.

[0006] Preferably, the wound surface monitoring flexible sensing device also includes a client for receiving and displaying the signal output by the sensor.

[0007] Preferably, the color recognition sensor is a TCS34725 chip.

[0008] Preferably, the tension sensor is a liquid metal tension sensor.

[0009] Preferably, the wound monitoring flexible sensing device also includes an ESP32-S3 Bluetooth / wifi integrated chip, and the signals output by the temperature and humidity sensor, the tension sensor and the color recognition sensor are all transmitted to the client through the ESP32-S3 Bluetooth / wifi integrated chip.

[0010] Preferably, the client is provided with an alarm display.

[0011] Preferably, the LED lamp includes a plurality of LED lamps, the TCS34725 chip includes a plurality of TCS34725 chips, and the plurality of LED lamps are used to illuminate the plurality of TCS34725 chips respectively, so that the sensor receives the color signal, thereby knowing the state of the wound surface.

[0012] Preferably, the wound monitoring flexible sensing device also includes a multiplexer, and the color change signal detected by the color recognition sensor is transmitted to the ESP32-S3 Bluetooth / wifi integrated chip through the multiplexer.

[0013] Preferably, the number of TCS34725 chips is the same as the number of LED lamps, one LED lamp is connected to one TCS34725 chip respectively, and the light of each LED lamp is illuminated by a separate TCS34725 chip.

[0014] Preferably, the circuit of the wound monitoring flexible sensor device also includes a multi-channel expansion module and a power supply module. The multi-channel expansion module includes an eight-channel I2C bidirectional conversion switch, and the power supply module includes a battery and a voltage stabilizing module.

[0015] Compared with the prior art, the present invention has the following technical effects: The wound monitoring flexible sensing device of some embodiments of the present disclosure can be applied to the wound surface (including wound wounds and surgical wounds) to cover the wound surface, and can monitor indicators and collect information on the wound surface. It has the functions of covering, bandaging, compressing, antibacterial, and hemostasis for the wound surface, and also has the function of better grasping the microenvironment of the wound surface, so that corresponding treatment can be carried out according to the specific situation of the wound surface to promote wound recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1 Shows the circuit design diagram of the wound surface monitoring flexible sensor device of some embodiments; Figure 2 A schematic diagram showing signal transmission of a flexible sensor device for wound surface monitoring according to some embodiments of the present disclosure is shown. Figure 2 a is Figure 1 The circuit design diagram shown in the figure, Figure 2b is the client module, Figure 2 In the figure, c is a color recognition sensor test.

[0017] Figure 3 FIG. 1 shows a FPCB prototype test diagram in some embodiments. Figure 3 Figure a in the middle shows the FPCB (flexible circuit board) prototype and the wound dressing model. Figure 3 b in the middle is a liquid metal flexible circuit. Figure 3 Figure c in the figure is the tension stretching test after silicone encapsulation.

[0018] Markings in the figure: 1-ESP32S3 Bluetooth / wifi integrated chip, 2-multi-channel expansion module, 3-TCS34725 array and LED light array, 4-power supply, 5-voltage regulator module, 6-reset switch. DETAILED DESCRIPTION

[0019] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several variations and improvements may be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0020] In some embodiments, a flexible sensing device for wound monitoring may include: a dressing, a sensor and an LED light. The sensor and the LED light are both arranged on a side of the dressing that is not in direct contact with the wound. The sensor includes a temperature and humidity sensor, a tension sensor and a color recognition sensor. The temperature and humidity sensor is used to monitor the temperature and humidity of the wound, the tension sensor is used to monitor the tension of the wound, the color sensor is used to monitor the color of the wound, and the LED light is used to illuminate the color recognition sensor.

[0021] In some embodiments, the wound monitoring flexible sensing device may further include a client for receiving and displaying signals output by the sensor.

[0022] In some embodiments, the color recognition sensor is a TCS34725 chip, which can output three-color (RGB) light intensity.

[0023] In some embodiments, the tension sensor is a liquid metal tension sensor. Liquid metal printing can be used to conveniently manufacture circuits suitable for the model size.

[0024] Those skilled in the art will appreciate that, in some embodiments, the temperature and humidity sensor may be an existing mature commercially available product.

[0025] Figure 1Shown are circuit designs of flexible sensing devices for wound monitoring according to some embodiments.

[0026] Figure 2 A schematic diagram showing signal transmission of a flexible sensing device for wound monitoring according to some embodiments of the present disclosure is shown.

[0027] like Figure 1 and Figure 2 As shown, in some embodiments, the wound monitoring flexible sensing device may also include an ESP32-S3 Bluetooth / wifi integrated chip, and the signals output by the temperature and humidity sensor, the tension sensor, and the color recognition sensor are all transmitted to the client through the ESP32S3 Bluetooth / wifi integrated chip 1. For example, the three-color (RGB) light intensity output by the TCS34725 chip can be transmitted to the client, such as a mobile phone or computer, through the BLE Bluetooth function of the ESP32S3 Bluetooth / wifi integrated chip 1, and can be displayed through a program or APP. The different colors monitored by the color recognition sensor, the local surface tension monitored by the tension sensor, and the temperature and humidity monitored by the temperature and humidity sensor can all be transmitted to a mobile phone or computer terminal for display.

[0028] like Figure 2 As shown, in actual use, by Figure 1 The core sensor circuit design shown monitors the wound dressing. In some embodiments, the area monitored by the sensor should cover the required detection area. Depending on the wound area, it can also be partially displayed or multiple devices can be spliced ​​for common use. At the same time, the color recognition signal of the monitoring area is transmitted to a mobile phone or computer terminal, for example, via Bluetooth. The specific color and range size are displayed in the app or applet, and a numerical mark is set to judge the bleeding or recovery of the wound.

[0029] In some embodiments, the client is provided with an alarm display.

[0030] like Figure 1 As shown, in some embodiments, the flexible sensing device for wound monitoring may also include at least one LED light, which is arranged on the side of the dressing that is not in direct contact with the wound. The at least one LED light is used to illuminate a single TCS34725 chip so that the sensor can better receive color signals and thus better understand the state of the wound.

[0031] like Figure 1 As shown, in some embodiments, the wound monitoring flexible sensor device may further include a multiplexer, and the TCS34725 chip transmits the detected color change signal to the ESP32S3 Bluetooth / wifi integrated chip 1 through the multiplexer. In some embodiments, the multiplexer is a TCA9548ARGER-I2C multiplexer.

[0032] like Figure 1 As shown, in some embodiments, the wound monitoring flexible sensing device may further include a reset switch 6.

[0033] like Figure 1 As shown, in some embodiments, at least one LED lamp includes a plurality of LED lamps, the number of TCS34725 chips is the same as the number of LED lamps, and one LED lamp is respectively connected to one TCS34725 chip to provide lighting for the TCS34725 chip. For example, the working status of the TCS34725 chip can be presented in the form of an LED lamp to show whether the sensor is working properly, and different colors can also be identified.

[0034] In some embodiments, multiple TCS34725 chips are arranged in an array to form a color sensor array module to match the overall size of the designed wound monitoring flexible sensor device. Multiple LED lights are also arranged in an array to form an LED light module.

[0035] Those skilled in the art will appreciate that although Figure 1 Only 16 TCS34725 chips and 16 LED lights are shown, but this is merely exemplary, and the wound monitoring flexible sensing device may also include other numbers of TCS34725 chips and LED lights.

[0036] Figure 1 The circuit design shown is personalized according to the structure of the flexible sensor device for wound monitoring, while taking into account the special material selection of the flexible sensor, which can meet the characteristics of flexible deformation and ensure circuit stability.

[0037] In some embodiments, the control module is an ESP32S3 Bluetooth / wifi integrated chip 1.

[0038] like Figure 1 As shown, in some embodiments, the circuit of the wound monitoring flexible sensing device also includes a multi-channel expansion module 2 and a power supply 4 module, the multi-channel expansion module 2 includes an eight-channel I2C bidirectional conversion switch, and the power supply 4 module includes a battery and a voltage stabilization module 5.

[0039] Figure 3 Shown are FPCB board prototype test diagrams in some embodiments.

[0040] like Figure 3As shown, according to the sensor function integrated circuit of some embodiments, a FPCB (flexible circuit board) prototype is made, various sensor functions of the prototype are tested, and parameter settings and thresholds are adjusted to make it have an alarm display on the mobile phone. Silicone packaging is used in the manufacturing process to test its heat resistance and corrosion resistance to ensure safety in medical environments. It does not contact the patient's skin wound during use, and is added in layers on top of conventional dressings according to the required structure to detect the stability of the acquired data.

[0041] like Figure 3 As shown, in some embodiments, tension sensing is performed by, for example Figure 3 b is flexibly printed. The flexible circuit uses liquid metal material. By measuring the numerical change of the tensile deformation of the liquid metal, the pressure and surface tension are measured and displayed. The appearance can be designed to be a shape close to the wound. At the same time, a temperature and humidity sensor is added and packaged together. This part has stretchability. At the same time, the packaging layer does not affect the temperature and humidity sensing. It is connected to the main circuit. When bleeding, swelling, inflammation, etc. occur inside the wound, the sensor part can stretch with the expansion of the skin. At the same time, the stretching data is transmitted to a mobile phone or computer terminal through, for example, Bluetooth, and the stretching value as well as the temperature and humidity values ​​are displayed in the app or mini program, and an early warning value is set to determine whether there are problems such as acute bleeding, tissue swelling, and increased skin temperature, so as to facilitate timely treatment. In conventional medical treatment, it is difficult to detect problems in time due to the thick covering dressing. The devices of some embodiments of the present invention can accurately obtain local data changes in real time.

[0042] The flexible sensor device for wound monitoring in some embodiments of the present disclosure adopts a flexible sensor circuit design. Through color spectrum recognition technology, it can evaluate the degree of ischemia of the wound surface (including wound wound surface and surgical wound surface), for example. The flexible extension design can evaluate the degree of local swelling.

[0043] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art may make various modifications or variations within the scope of the claims, which do not affect the essence of the present invention.

Claims

1. A flexible sensor device for wound monitoring, characterized in that: include: A dressing, a sensor and an LED light, wherein the sensor and the LED light are both arranged on a side of the dressing that is not in direct contact with the wound surface, the sensor comprises a temperature and humidity sensor, a tension sensor and a color recognition sensor, the temperature and humidity sensor is used to monitor the temperature and humidity of the wound surface, the tension sensor is used to monitor the tension of the wound surface, the color sensor is used to monitor the color of the wound surface, and the LED light is used to illuminate the color recognition sensor.

2. The wound monitoring flexible sensor device according to claim 1, characterized in that: It also includes a client, which is used to receive and display the signal output by the sensor.

3. The wound monitoring flexible sensor device according to claim 1, characterized in that: The color recognition sensor is a TCS34725 chip.

4. The wound monitoring flexible sensor device according to claim 1, characterized in that: The tension sensor is a liquid metal tension sensor.

5. The wound monitoring flexible sensor device according to claim 2, characterized in that: It also includes an ESP32-S3 Bluetooth / wifi integrated chip, and the signals output by the temperature and humidity sensor, the tension sensor and the color recognition sensor are all transmitted to the client through the ESP32-S3 Bluetooth / wifi integrated chip.

6. The wound monitoring flexible sensor device according to claim 2, characterized in that: The client is provided with an alarm display.

7. The wound monitoring flexible sensor device according to claim 3, characterized in that: The LED lamp includes a plurality of LED lamps, and the TCS34725 chip includes a plurality of TCS34725 chips. The plurality of LED lamps are used to illuminate the plurality of TCS34725 chips respectively, so that the sensor receives the color signal, thereby knowing the state of the wound surface.

8. The wound monitoring flexible sensor device according to claim 5, characterized in that: It also includes a multiplexer, and the color change signal detected by the color recognition sensor is transmitted to the ESP32-S3 Bluetooth / wifi integrated chip through the multiplexer.

9. The wound monitoring flexible sensor device according to claim 7, characterized in that: The number of the TCS34725 chips is the same as the number of the LED lamps. One LED lamp is connected to one TCS34725 chip respectively, and each LED lamp light is illuminated by a separate TCS34725 chip.

10. The wound monitoring flexible sensor device according to claim 1, characterized in that: The circuit of the wound surface monitoring flexible sensor device also includes a multi-channel expansion module and a power supply module. The multi-channel expansion module includes an eight-channel I2C bidirectional conversion switch, and the power supply module includes a battery and a voltage stabilizing module.

Images