Alarm plaster capable of rapidly monitoring wound swelling and use method

Abstract

The invention relates to the technical field of medical equipment, in particular to an alarm application capable of quickly monitoring wound swelling, which comprises an application component and an alarm device electrically connected with the application component, the application component comprises an upper layer flexible film, a lower layer flexible film and a fixing ring positioned between the upper layer flexible film and the lower layer flexible film, the fixing ring is used for forming a supporting cavity between the upper-layer flexible film and the lower-layer flexible film, a pressure-sensitive sensor is arranged between the upper-layer flexible film and the lower-layer flexible film, the pressure-sensitive sensor is located on the inner side of the fixing ring and installed on the upper-layer flexible film, the upper-layer flexible film is attached to the skin, and the alarm device is further provided with a controller. The controller is electrically connected with the alarm device and the pressure-sensitive sensor; the application assembly is provided with three layers, and the blocking ring is clamped in the middle of the application assembly, so that unnecessary false triggering of the sensor can be avoided; the invention further provides an application method for the alarm application.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, in particular to an alarm patch capable of quickly monitoring wound swelling and a use method thereof. Background Art

[0002] A wound dressing is a new type of medical dressing with built-in sensors and microprocessors that can monitor the temperature, humidity and swelling around the wound and sound an alarm when an abnormality occurs. Generally speaking, when applying the dressing, you need to clean the wound first, then apply the dressing, and then connect the device to monitor the condition of the wound. If the monitoring device sounds an alarm, it means that the wound is abnormal and should be handled in time. For example, Chinese patent CN208809228U discloses a liquid extravasation dressing alarm device, including an applicator body and an alarm device, a hemostatic pad is provided in the middle of the lower surface of the applicator body, the alarm device includes a shell, a detection head, a wire, an LED warning light, a PCB board and an alarm buzzer, the detection heads are respectively arranged on both sides of the hemostatic pad, one end of the wire is electrically connected to the PCB board, and the other end passes through the upper surface of the applicator body to the lower surface of the applicator body and is electrically connected to the detection head. The above patent has a medical pressure sensor on one side of the hemostatic pad of the dressing body. When liquid extravasation causes skin swelling, or when liquid seeps out to both sides of the hemostatic pad during the infusion process, the LED warning light and alarm buzzer can be used to alarm and promptly remind people around that liquid infiltration has occurred. The wireless positioning device can also be used to notify medical staff to ensure that medical staff can deal with the patient's liquid extravasation in a timely manner. However, due to the different locations of the dressing and the non-standard operation of the operator, false alarms often occur. At the same time, the wound itself will swell during the healing process, and different degrees of swelling can easily trigger false alarms of the dressing.

[0003] Therefore, it is necessary for those skilled in the art to provide an alarm patch and a method of use that can quickly monitor wound swelling, reduce false alarms, and improve stability of use. Summary of the invention

[0004] The purpose of the present invention is to provide an alarm dressing and a method of use that can quickly monitor wound swelling, so as to solve the technical problem in the prior art that wounds swell when healing and medical dressings with sensors are prone to accidental touches.

[0005] The technical solution adopted by the present invention to solve its technical problems is: an alarm dressing that can quickly monitor wound swelling, including a dressing component and an alarm device electrically connected to the dressing component, the dressing component including an upper flexible film, a lower flexible film and a fixing ring located between the upper flexible film and the lower flexible film, the fixing ring is used to form a supporting cavity between the upper flexible film and the lower flexible film, a pressure-sensitive sensor is provided between the upper flexible film and the lower flexible film, the pressure-sensitive sensor is located on the inner side of the fixing ring and installed on the upper flexible film, the upper flexible film is in contact with the skin, and a controller is also provided on the alarm device, and the controller is electrically connected to the alarm device and the pressure-sensitive sensor.

[0006] Furthermore, the alarm device includes a power supply, a buzzer and a connector, the power supply is electrically connected to the buzzer, the buzzer is electrically connected to the connector, and the connector is electrically connected to the pressure-sensitive sensor in the application assembly; the power supply, buzzer, connector and pressure-sensitive sensor are all electrically connected to the controller.

[0007] Furthermore, the fixing ring is made of plastic, and the inner diameter of the fixing ring is larger than the outer contour of the pressure-sensitive sensor.

[0008] Furthermore, the fixing ring is provided with an opening, the opening passes through the inner and outer ring walls of the fixing ring, and part of the circuit of the pressure-sensitive sensor passes through the opening and is electrically connected to the connector.

[0009] Furthermore, the upper flexible film and the lower flexible film are both flexible films, and the edge of the upper flexible film is in contact with the edge of the lower flexible film.

[0010] Furthermore, the pressure-sensitive sensor is installed between the upper flexible film and the lower flexible film, a gap is left between the pressure-sensitive sensor and the upper flexible film, and a gap is left between the pressure-sensitive sensor and the lower flexible film.

[0011] A method for using an alarm dressing, applicable to any of the above-mentioned alarm dressings capable of quickly monitoring wound swelling, the method for using comprising:

[0012] S10: Install and debug the alarm dressing to make the dressing component fit the wound;

[0013] S20: The pressure-sensitive sensor transmits the monitored change in resistance value ΔR to the controller in the form of an electrical signal;

[0014] S30: After receiving the change ΔR, the controller compares it with the set value N preset in the controller. If ΔR<N, it goes to S20; if ΔR≥N, it goes to S40;

[0015] S40: The controller controls the alarm device to sound an alarm.

[0016] Further, in said S10, debugging the alarm patch includes the following steps:

[0017] S11: Insert the battery into the alarm device, and the power indicator light turns on;

[0018] S12: Select the size of the dressing component according to the wound surface;

[0019] S13: Place the dressing component on the wound surface, press the dressing component, and detect the alarm device. The alarm device remains silent and returns to S12. The alarm device sounds an alarm and enters S14;

[0020] S14: Apply the dressing according to the dressing component to ensure that the dressing component is in contact with the wound surface;

[0021] S15: Press the application component again to detect the alarm device, the alarm device remains silent and returns, the alarm device sounds an alarm, and the debugging is completed.

[0022] The beneficial effects of the present invention are as follows: the dressing assembly of the present invention is formed with three layers, and an ultra-thin resistor film is sandwiched in the middle of the dressing assembly, which can make the dressing assembly more sensitive, and a barrier ring is also sandwiched in the middle of the dressing assembly, so that the sensor will not be triggered unnecessarily. The dressing assembly uses a matching dressing, such as a non-woven fabric dressing, which can quickly absorb body fluids. The ultra-thin resistor film of the sensor and the matching dressing can make the sensor suitable for more surgical wounds during use, ensure that the signal can be accurately transmitted, and further improve the sensitivity. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The present invention is a front view of an alarm dressing capable of quickly monitoring wound swelling.

[0024] Figure 2 yes Figure 1 Exploded diagram.

[0025] Figure 3 yes Figure 1 Sectional view of AA.

[0026] Figure 4 It is a flow chart of the application method of the alarm patch of the present invention.

[0027] Figure 5 yes Figure 4 Flow chart of debugging of alarm patch in S10.

[0028] Figure 6 It is a control block diagram of the present invention.

[0029] The components in the accompanying drawings are marked as follows: 10, applicator assembly; 11, fixing ring; 12, upper flexible film; 13, pressure-sensitive sensor; 14, lower flexible film; 20, alarm device; 21, connector; 22, controller. DETAILED DESCRIPTION

[0030] The present invention will now be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, which only illustrates the basic structure of the present invention in a schematic manner, and therefore only shows the components related to the present invention.

[0031] See also Figure 1 , Figure 6 The present invention provides an alarm dressing that can quickly monitor wound swelling, including a dressing component 10 and an alarm device 20 electrically connected to the dressing component 10.

[0032] The alarm device 20 includes a power supply, a buzzer and a connector 21. The power supply is electrically connected to the buzzer, the buzzer is electrically connected to the connector 21, and the connector 21 is electrically connected to the patch assembly 10. The connector 21 is a common electrical connector on the market, which can be quickly plugged in and out, and has no positive or negative. The alarm device 20 is also provided with a controller 22. The power supply, buzzer, connector 21 and pressure-sensitive sensor 13 are all electrically connected to the controller 22. The controller 22 is used to receive signals from the patch assembly 10 and control the start and stop of the alarm device 20 to achieve human-computer interaction.

[0033] Furthermore, the application assembly 10 includes an upper flexible film 12 , a lower flexible film 14 , and a fixing ring 11 located between the upper flexible film 12 and the lower flexible film 14 .

[0034] Specifically, the upper flexible film 12 and the lower flexible film 14 are both flexible films, and a pressure-sensitive sensor 13 is provided between the upper flexible film 12 and the lower flexible film 14, and the pressure-sensitive sensor 13 is located on the inner side of the fixing ring 11. The edge of the upper flexible film 12 and the edge of the lower flexible film 14 are in contact with each other. The connector 21 is electrically connected to the pressure-sensitive sensor 13. The upper flexible film 12 is in contact with the human body. The pressure-sensitive sensor 13 is electrically connected to the controller 22, and the controller 22 is used to receive the signal of the pressure-sensitive sensor 13 and control the start and stop of the buzzer.

[0035] The pressure-sensitive sensor 13 is a flexible film pressure-sensitive sensor, which is a flexible film sensor that uses the piezoresistive effect to reduce the resistance value as the pressure acting on the sensing area increases. It is composed of a polycool film with excellent comprehensive mechanical properties, a highly conductive material, and a nano-level pressure-sensitive material, and can be changed into different shapes, suitable for fitting different parts. When in use, the flexible film pressure-sensitive sensor is equivalent to a two-port variable resistor whose resistance value is controlled by pressure when it is under force, and converts the changed resistance value into a voltage signal that can be recognized by the processor. Specifically, the signal received by the pressure-sensitive sensor 13 through the change of resistance value is set to ΔR, and the controller 22 is provided with a set value N. The signal ΔR monitored by the pressure-sensitive sensor 13 is transmitted to the controller 22 in the form of an electrical signal and compared with the set value N in the controller 22. ΔR<N, the set value is not reached, and the buzzer remains silent. ΔR≥N, the set value is reached, and the buzzer sounds an alarm.

[0036] In this example, see Figure 2 , Figure 3 The upper flexible film 12 and the lower flexible film 14 are both circular structures, the fixing ring 11 is a circular ring structure, the pressure-sensitive sensor 13 is roughly circular structure, the inner diameter of the fixing ring 11 is larger than the outer contour of the pressure-sensitive sensor 13, and under the blocking effect of the fixing ring 11, a supporting cavity is formed between the upper flexible film 12 and the lower flexible film 14, and the pressure-sensitive sensor 13 is located in the supporting cavity. The pressure-sensitive sensor 13 is installed on the upper flexible film 12. When the upper flexible film 12 is deformed, the pressure-sensitive sensor 13 will be squeezed and deformed accordingly, thereby realizing real-time dynamic monitoring of wound swelling.

[0037] In another embodiment, the pressure-sensitive sensor 13 is installed between the upper flexible film 12 and the lower flexible film 14, and a certain gap is left between the pressure-sensitive sensor 13 and the upper flexible film 12 and the lower flexible film 14. In this way, during installation, the dressing component 10 has no front and back sides, which improves the convenience of installation. At the same time, it also prevents the swelling of the wound itself from causing the pressure-sensitive sensor 13 to be accidentally touched, thereby improving the stability of use.

[0038] Furthermore, the fixing ring 11 is made of plastic and has a certain strength, thereby providing a certain structural strength for the dressing assembly 10, preventing the dressing assembly 10 from being easily deformed, and ensuring the stability of the dressing assembly 10 during use after being attached.

[0039] The fixing ring 11 is provided with an opening (not shown in the figure), which passes through the inner and outer ring walls of the fixing ring 11. The opening is used to reduce the structural strength of the fixing ring 11 to facilitate bending and deformation. The fit is improved and the stability of use is ensured. At the same time, part of the circuit of the pressure-sensitive sensor 13 passes through the opening and is electrically connected to the connector 21. The opening can improve the standardization and stability of the wiring, reduce damage to the circuit, and improve the stability of use.

[0040] The patch assembly 10 of the present invention is formed with three layers. An ultra-thin resistive film is enclosed in the patch assembly 10, which can make the patch assembly 10 more sensitive. A fixing ring 11 is also enclosed in the middle of the patch assembly 10, which can prevent the sensor from being triggered unnecessarily. The patch assembly 10 uses a matching patch, such as a non-woven patch, which can quickly absorb body fluids. The ultra-thin resistive film of the sensor and the matching patch can make the sensor suitable for more surgical wounds during use, ensure that the signal can be accurately transmitted, and further improve the sensitivity.

[0041] See also Figure 3 , Figure 4 The present invention provides a method for using the above-mentioned alarm patch, including:

[0042] S10: Install and debug the alarm dressing so that the dressing assembly 10 fits the wound;

[0043] S20: The pressure-sensitive sensor 13 transmits the monitored change in resistance value ΔR to the controller 22 in the form of an electrical signal;

[0044] S30: After receiving the change ΔR, the controller 22 compares it with the set value N preset in the controller 22. If ΔR<N, the process proceeds to S20; if ΔR≥N, the process proceeds to S40;

[0045] S40: The controller 22 controls the alarm device 20 to sound an alarm.

[0046] In the S10, debugging the alarm patch includes the following steps:

[0047] S11: insert the battery into the alarm device 20, and the power indicator light turns on;

[0048] S12: Select the size of the dressing component 10 according to the wound surface;

[0049] S13: Place the dressing assembly 10 on the wound surface, press the dressing assembly 10, detect the alarm device 20, the alarm device 20 remains silent and returns to S12, the alarm device 20 sounds an alarm and enters S14;

[0050] S14: applying the dressing according to the dressing assembly 10 to ensure that the dressing assembly 10 is in contact with the wound surface;

[0051] S15: Press the patch assembly 10 again to detect the alarm device 20. The alarm device 20 remains silent and returns to S12. The alarm device 20 sounds an alarm and enters S16.

[0052] S16: Debugging completed.

[0053] The present invention provides a method for using an alarm patch, comprising applying a patch assembly 10 to a wound, and detecting whether a resistance signal ΔR of a pressure-sensitive sensor 13 reaches a set value N. When the pressure-sensitive sensor 13 is not subjected to pressure or the pressure is less than the set value N, a high level is output and a buzzer remains silent. When the pressure on the pressure-sensitive sensor 13 exceeds the set value N, a low level is output and a buzzer sounds an alarm. In this way, real-time dynamic monitoring of wound swelling is achieved. At the same time, in order to ensure the accuracy of monitoring, the present invention also provides a debugging and detection method before the alarm application, that is, a patch assembly 10 of appropriate size is selected according to the wound surface, the patch assembly 10 is attached to the wound surface, the patch assembly 10 is pressed, and it is detected whether the buzzer normally sounds an alarm. If the buzzer remains silent, a new buzzer needs to be replaced. After attaching the patch to the patch assembly 10, the patch assembly 10 is pressed a second time to once again detect whether the buzzer normally sounds an alarm. At the same time, the patch assembly 10 can be conditionally pressed according to the set value N to ensure that the buzzer can sound an alarm at a specified pressure value, thereby further improving the stability and accuracy of the present invention.

[0054] In another embodiment, the output end of the patch assembly 10 is directly connected to a single-chip microcomputer, and the single-chip microcomputer is used to detect high and low levels to achieve numerical value adjustment and detection.

[0055] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. An alarm dressing capable of quickly monitoring wound swelling, comprising a dressing assembly (10) and an alarm device (20) electrically connected to the dressing assembly (10), characterized in that: The patch assembly (10) comprises an upper flexible film (12), a lower flexible film (14), and a fixing ring (11) located between the upper flexible film (12) and the lower flexible film (14); the fixing ring (11) is used to form a supporting cavity between the upper flexible film (12) and the lower flexible film (14); a pressure-sensitive sensor (13) is provided between the upper flexible film (12) and the lower flexible film (14); the pressure-sensitive sensor (13) is located on the inner side of the fixing ring (11) and is mounted on the upper flexible film (12); the upper flexible film (12) is in contact with the skin; the alarm device (20) is also provided with a controller (22); the controller (22) is electrically connected to the alarm device (20) and the pressure-sensitive sensor (13).

2. The alarm patch capable of quickly monitoring wound swelling according to claim 1, characterized in that: The alarm device (20) comprises a power supply, a buzzer and a connector (21); the power supply is electrically connected to the buzzer, the buzzer is electrically connected to the connector (21), and the connector (21) is electrically connected to a pressure-sensitive sensor (13) in the patch assembly (10); the power supply, the buzzer, the connector (21) and the pressure-sensitive sensor (13) are all electrically connected to the controller (22).

3. The alarm patch capable of quickly monitoring wound swelling according to claim 2, characterized in that: The fixing ring (11) is made of plastic, and the inner diameter of the fixing ring (11) is larger than the outer contour of the pressure-sensitive sensor (13).

4. The alarm patch capable of quickly monitoring wound swelling according to claim 3, characterized in that: The fixing ring (11) is provided with an opening, the opening penetrating the inner and outer ring walls of the fixing ring (11), and part of the circuit of the pressure-sensitive sensor (13) passes through the opening and is electrically connected to the connector (21).

5. The alarm patch capable of quickly monitoring wound swelling according to claim 1, characterized in that: The upper flexible film (12) and the lower flexible film (14) are both flexible films, and the edge of the upper flexible film (12) and the edge of the lower flexible film (14) are in contact with each other.

6. The alarm patch capable of quickly monitoring wound swelling according to claim 1, characterized in that: The pressure-sensitive sensor (13) is installed between the upper flexible film (12) and the lower flexible film (14), with a gap between the pressure-sensitive sensor (13) and the upper flexible film (12), and a gap between the pressure-sensitive sensor (13) and the lower flexible film (14).

7. A method for using an alarm patch, applicable to the alarm patch capable of quickly monitoring wound swelling according to any one of claims 1 to 6, the method comprising: S10: installing and debugging the alarm dressing so that the dressing assembly (10) fits the wound; S20: the pressure-sensitive sensor (13) transmits the monitored change in resistance value ΔR to the controller (22) in the form of an electrical signal; S30: after receiving the change ΔR, the controller (22) compares it with the set value N preset in the controller (22). If ΔR < N, the process proceeds to S20; if ΔR ≥ N, the process proceeds to S40; S40: The controller (22) controls the alarm device (20) to sound an alarm.

8. The method for using the alarm patch according to claim 7, characterized in that: In the S10, debugging the alarm patch includes the following steps: S11: insert the battery into the alarm device (20), and the power indicator light turns on; S12: Select the size of the dressing component (10) according to the wound surface; S13: placing the dressing component (10) on the wound surface, pressing the dressing component (10), detecting the alarm device (20), the alarm device (20) remaining silent and returning to S12, the alarm device (20) sounding an alarm and entering S14; S14: applying a dressing according to the dressing component (10) to ensure that the dressing component (10) is in contact with the wound surface; S15: Press the patch assembly (10) again to detect the alarm device (20); the alarm device (20) remains silent and returns to S12; the alarm device (20) sounds an alarm, and the debugging is completed.

Images