An intelligent gauze covering layer for wound healing surface temperature sensing

Abstract

The application discloses a kind of intelligent gauze covering for wound healing surface area temperature sensing, it is related to intelligent gauze technical field, and its technical solution main point is: including gauze, flexible sensor array, wound temperature evaluation module and host computer, the flexible sensor array is embedded in gauze, the flexible sensor array includes flexible printed circuit, temperature-sensitive resistance is equipped at the node of the flexible printed circuit, the connection geometry between node and node of the flexible printed circuit node is designed using sine function control, the flexible printed circuit is connected with host computer by gold finger interface, the host computer is connected with temperature evaluation module, and the state monitoring of wound is realized by the evaluation of wound temperature.The application has low cost, and does not directly contact skin, can be applied to disposable use, the inflammatory response of wound is usually covered by gauze and other wrappings, with concealment and harmfulness, the design of the application helps to promote the effect of practical application of trauma medicine in clinical field.

Description

Technical Field

[0001] This invention relates to the field of smart gauze technology, and more specifically, to a smart gauze covering layer for temperature sensing in wound healing areas. Background Technology

[0002] Trauma is the damage to human tissues or organs caused by mechanical factors. Any external factor applied to the human body also includes structural or functional damage caused by high temperatures, cold temperatures, electric currents, radiation, acids, alkalis, toxic gases, poisonous insects, mosquito bites, etc. Trauma is extremely common. It can occur extensively not only during wartime but also during peacetime. It includes cuts, punctures, contusions, and sprains.

[0003] In daily life, gauze is often used to bandage wounds. At the same time, the inflammatory response of the wound is usually covered by gauze and other coverings, which is both hidden and harmful. It cannot be detected by medical staff in time, which will delay the wound healing time of patients. In view of this, the inventors propose an intelligent gauze covering layer for temperature sensing in the wound healing area. Summary of the Invention

[0004] The purpose of this invention is to provide an intelligent gauze covering layer for temperature sensing in the post-wound healing area, enabling real-time detection of the wound recovery status of the injured person and handling of abnormal situations.

[0005] The above-mentioned technical objective of this invention is achieved through the following technical solution: a smart gauze covering layer for wound healing temperature sensing, comprising gauze, a flexible sensor array, a wound temperature assessment module, and a host computer. The flexible sensor array is embedded in the gauze and includes a flexible printed circuit. The nodes of the flexible printed circuit are equipped with thermistors. The connection geometry between the nodes of the flexible printed circuit adopts a sine function control design. The flexible printed circuit is connected to the host computer through a gold finger interface. The host computer is connected to the temperature assessment module, thereby achieving wound status monitoring through wound temperature assessment.

[0006] The present invention is further configured such that the temperature evaluation module includes:

[0007] The temperature acquisition unit automatically acquires and processes temperature matrix data at regular intervals.

[0008] The analysis and evaluation unit analyzes the wound healing status based on temperature matrix data collected over a period of time. It obtains time-varying temperature field data through a temperature surface domain sensing method, and senses the surface distribution and temperature changes in real time, thereby achieving a preliminary assessment of the wound healing status.

[0009] Specifically, if the surface temperature is higher than the normal healing process temperature, and the uniformity of the temperature field distribution decreases, then the wound is considered to have a verification reaction and suppuration.

[0010] The present invention is further configured such that the temperature matrix calculation formula is:

[0011]

[0012] Where: B is the constant B, T0 is the reference temperature, R is the resistance value at temperature T, and lnR is the natural logarithm of the resistance value.

[0013] In summary, this invention offers the following advantages: the device is inexpensive, does not directly contact the skin, and can be used for single-use applications. Inflammatory reactions at wound sites are typically concealed by gauze or other coverings, making them both inconspicuous and potentially harmful. The design of this device contributes to advancing the practical application of trauma medicine in the clinical field. Attached Figure Description

[0014] Figure 1 This is a layout diagram of the flexible printed circuit in an embodiment of the present invention;

[0015] Figure 2 This is a rendering of the flexible printed circuit (FPC) in an embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of a flexible printed circuit in an embodiment of the present invention (wherein, U1) ～ 25 represents a temperature-sensitive resistor, Q1 ～ 12 represents a MOSFET, and there is also a 14-pin connector for output signals;

[0017] Figure 4 This is a simplified schematic diagram of the flexible printed circuit in an embodiment of the present invention (X1). ～ 5 is the horizontal node number, Y1 ～ 5 represents the vertical node number, M1 ～ 4 represents the switch circuit number;

[0018] Figure 5 This is a structural diagram of the intelligent gauze for temperature sensing in the wound healing region, as described in an embodiment of the present invention. Detailed Implementation

[0019] 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.

[0020] Example:

[0021] A smart gauze covering for post-wound healing temperature sensing includes gauze, a flexible sensor array, a wound temperature assessment module, and a host computer. The flexible sensor array is embedded in the gauze and includes flexible printed circuitry, such as... Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the flexible printed circuit (PCB) nodes are equipped with temperature-sensitive resistors. The connection geometry between the PCB nodes adopts a sinusoidal function control design. The PCB is connected to the host computer via a gold finger interface.

[0022] like Figure 4 As shown, a logic selector is used at the control end to select the on / off state of each path to achieve real-time reading of the specific resistance value of the multiple temperature-sensitive resistors in superimposed state. For example, when Y1 and X1~5 are on, the resistors R1, R1+R6 (M1 off), R1+R6+R11 (M1, M2 off), R1+R6+R11+R16 (M1, M2, M3 off), and R1+R6+R11+R16+R21 (M1, M2, M3, M4 off) can be read sequentially. Based on their resistance values, the resistance values ​​of R1, R6, R11, R16, and R21 can be obtained. The reading of other resistors is similar.

[0023] The temperature matrix corresponding to each resistance value can be calculated by combining the pre-calibrated matrix of the temperature-sensitive resistors B1 to B25 with its related formulas.

[0024]

[0025] Where: B is the B constant (unit: K or °C), T0 is the reference temperature (unit: Kelvin K or °C), R is the resistance value at temperature T, and lnR is the natural logarithm of the resistance value.

[0026] The host computer is connected to the temperature assessment module, which monitors the condition of the wound by assessing the wound temperature.

[0027] The temperature assessment module includes:

[0028] The temperature acquisition unit automatically acquires and processes temperature matrix data at regular intervals.

[0029] The analysis and evaluation unit analyzes the wound healing status based on temperature matrix data collected over a period of time. It obtains time-varying temperature field data through a temperature field sensing method, as well as senses the surface distribution and temperature changes in real time, thereby achieving a preliminary assessment of the wound healing status.

[0030] Human wound healing is usually accompanied by uniform, localized, slight heating. When the surface temperature collected by the temperature assessment module is higher than the normal healing process temperature, and at the same time the uniformity of the temperature field distribution decreases, it is judged that the wound has shown signs of verification reaction and suppuration.

[0031] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. 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 smart gauze covering layer for temperature sensing in wound healing areas, characterized in that: The device includes gauze, a flexible sensor array, a wound temperature assessment module, and a host computer. The flexible sensor array is embedded in the gauze and includes a flexible printed circuit. The nodes of the flexible printed circuit are equipped with thermistors. The connection geometry between the nodes of the flexible printed circuit adopts a sine function control design. The flexible printed circuit is connected to the host computer through a gold finger interface. The host computer is connected to the temperature assessment module to monitor the status of the wound by assessing the wound temperature.

2. The intelligent gauze covering layer for temperature sensing in wound healing area according to claim 1, characterized in that: The temperature assessment module includes: The temperature acquisition unit automatically acquires and processes temperature matrix data at regular intervals. The analysis and evaluation unit analyzes the wound healing status based on temperature matrix data collected over a period of time. It obtains time-varying temperature field data through a temperature surface domain sensing method, and senses the real-time surface distribution and temperature changes, thereby achieving a preliminary assessment of the wound healing status. Specifically, if the surface temperature is higher than the normal healing process temperature, and the uniformity of the temperature field distribution decreases, then the wound is considered to have a verification reaction and suppuration.

3. The intelligent gauze covering layer for temperature sensing in wound healing area according to claim 2, characterized in that: The formula for calculating the temperature matrix is: Where: B is the constant B, T0 is the reference temperature, R is the resistance value at temperature T, and lnR is the natural logarithm of the resistance value.

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