Intelligent warning alarm patch device

Abstract

This invention discloses an intelligent warning and alarm dressing device, comprising a monitoring dressing and an alarm component for outputting an alarm when the monitoring dressing detects extravasation of medication into the perivascular subcutaneous tissue. The monitoring dressing contains an embedded monitoring component, and its upper surface has a first magnetic contact connected to the monitoring component. The alarm component's lower surface has a second magnetic contact that is attracted to and electrically connected to the first magnetic contact. The monitoring component integrates multiple sensors for pressure, temperature, and bioimpedance, real-time monitoring of physiological parameters of the subcutaneous tissue at the infusion site. Through a multi-parameter fusion algorithm to filter interference, a local alarm is triggered when multiple conditions are met, and the alarm is wirelessly synchronized to a medical terminal for accurate patient information location. This device effectively solves the problems of traditional infusion dressings, such as lack of monitoring and delayed extravasation detection, achieving early warning, accurate alarm, strong anti-interference, convenient reusability, and reduced risk of extravasation injury. It is suitable for high-risk scenarios such as pediatrics and geriatrics and is easy to promote and popularize.

Description

Technical Field

[0001] This invention relates to the field of medical care products technology, and in particular to an intelligent warning and alarm dressing device. Background Technology

[0002] Intravenous infusion is one of the most common and basic treatment methods in modern medicine. However, behind this seemingly ordinary "IV drip" lies a risk that causes great anxiety for both clinicians and patients—extravenous extravasation.

[0003] Extravasation refers to the accidental leakage of intravenous medication (especially chemotherapy drugs, hypertonic drugs, and vasoactive drugs) into the subcutaneous tissue surrounding the blood vessels during intravenous infusion. Once it occurs, it can cause mild symptoms such as local redness, swelling, and pain, or more serious conditions such as blistering, tissue ulceration, necrosis, and even amputation or medical disputes. Statistics show that even in hospitals with highly standardized nursing practices, the incidence of peripheral intravenous extravasation is as high as 0.1% to 6%, and it is even more prevalent in pediatrics, geriatrics, and critically ill patients.

[0004] Currently, clinical detection of extravasation mainly relies on visual observation and patient complaints, which has a significant time lag. Traditional infusion fixation methods only provide physical fixation and cannot detect physiological changes in subcutaneous tissue. When extravasation occurs, the osmotic pressure, impedance, temperature, and swelling in the subcutaneous tissue all change due to fluid accumulation, but this is often only noticeable to the naked eye when the fluid accumulation reaches 20-30 ml or even more, at which point damage may have already occurred.

[0005] In response, the inventor of this patent, combining clinical experience and reflecting on the problems encountered in clinical work, reviewed a large amount of scientific research data and literature, and through a novelty search, gradually conceived and designed this application to solve the relevant technical problems. Summary of the Invention

[0006] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, the object of this invention is to provide an intelligent warning and alarm patch device.

[0007] To achieve one of the above objectives, an intelligent warning alarm dressing device according to an embodiment of the present invention includes a monitoring dressing and an alarm component for outputting an alarm when the monitoring dressing detects extravasation of drug solution into the perivascular subcutaneous tissue; The monitoring patch has a monitoring component embedded inside, and the upper surface of the monitoring patch has a first magnetic contact that is connected to the monitoring component; the lower surface of the alarm component has a second magnetic contact that is attracted to and electrically connected to the first magnetic contact.

[0008] In addition, the intelligent warning alarm patch device according to the above embodiments of the present invention may also have the following additional technical features: According to one embodiment of the present invention, the alarm component includes a housing, a microprocessor disposed in the housing, and an alarm connected to the microprocessor; The lower bottom surface of the housing is provided with the second magnetic contact point; When the monitoring component detects that the drug solution has leaked into the subcutaneous tissue around the blood vessels, it generates a feedback signal and transmits the feedback signal to the microprocessor through the first magnetic contact and the second magnetic contact. The microprocessor then controls the alarm to output an alarm based on the feedback signal.

[0009] According to one embodiment of the present invention, the monitoring patch includes a signal transmission layer and a hydrocolloid base layer stacked from top to bottom; The upper surface of the signal transmission layer is provided with the first magnetic contact point; the lower surface of the hydrocolloid base layer is an adhesive surface; the monitoring component is embedded in the hydrocolloid base layer.

[0010] According to one embodiment of the present invention, the monitoring component includes a pressure sensor embedded in the hydrocolloid substrate; The first magnetic contact includes a magnetic contact A connected to the pressure sensor; the second magnetic contact includes a magnetic contact B that is attracted to and electrically connected to the magnetic contact A and electrically connected to the microprocessor. When the drug solution extravasates into the subcutaneous tissue around the blood vessels, causing subcutaneous edema, and the pressure sensor detects that the subcutaneous pressure rises above a preset pressure threshold, a first feedback signal is generated and transmitted to the microprocessor. The microprocessor then controls the alarm to output an alarm based on the first feedback signal.

[0011] According to one embodiment of the present invention, the monitoring component further includes a temperature sensor embedded in the hydrocolloid substrate; The first magnetic contact further includes a magnetic contact C connected to the temperature sensor; the second magnetic contact further includes a magnetic contact D that is attracted to and electrically connected to the magnetic contact C and electrically connected to the microprocessor. When the drug solution extravasates into the subcutaneous tissue around the blood vessels, causing subcutaneous edema, and the temperature sensor detects that the subcutaneous temperature rise is greater than a preset temperature threshold, a second feedback signal is generated and transmitted to the microprocessor. The microprocessor controls the alarm to output an alarm based on the second feedback signal.

[0012] According to one embodiment of the present invention, the monitoring component further includes a bioimpedance sensor embedded in the hydrocolloid base layer and exposed on its lower surface; The first magnetic contact further includes a magnetic contact E connected to the bioimpedance sensor; the second magnetic contact further includes a magnetic contact F that is attracted to and electrically connected to the magnetic contact E and electrically connected to the microprocessor. When the drug solution extravasates into the subcutaneous tissue around the blood vessels, causing subcutaneous edema, and the bioimpedance sensor detects that the skin impedance has decreased to below a preset impedance threshold, a third feedback signal is generated and transmitted to the microprocessor. The microprocessor controls the alarm to output an alarm based on the third feedback signal.

[0013] According to one embodiment of the present invention, the alarm component further includes an interference filtering module disposed in the housing and connected to the microprocessor; the interference filtering module has a built-in multi-parameter fusion algorithm model and an autonomous learning unit; The multi-parameter fusion algorithm model is electrically connected to the pressure sensor, temperature sensor and bioimpedance sensor respectively; The autonomous learning unit is used to collect interference signal feature data caused by patient activity and sweating, and iteratively optimize the weight parameters of the multi-parameter fusion algorithm model based on the interference signal feature data. The multi-parameter fusion algorithm model is used to fuse the pressure data from the pressure sensor, the temperature data from the temperature sensor, and the impedance data from the bioimpedance sensor in real time to generate fused detection data. When the fused detection data meets the preset fused alarm conditions, the microprocessor controls the alarm to output an alarm. When the fused detection data is triggered by a single sensor and determined to be an interference signal, the multi-parameter fusion algorithm model filters the interference signal to prevent the alarm from outputting an alarm.

[0014] According to an embodiment of the present invention, the fusion alarm condition is that at least two of the following conditions are met: the pressure rise value corresponding to the pressure data is greater than a preset pressure threshold, the temperature rise value corresponding to the temperature data is greater than a preset temperature threshold, and the impedance data is reduced to below a preset impedance threshold, and the trigger time difference of each data is within a preset time range.

[0015] According to one embodiment of the present invention, the alarm component further includes a wireless module disposed within the housing for connecting an external medical terminal; The microprocessor has a built-in ID address that binds patient name, ward number, and bed number information; the wireless module is connected to the microprocessor. When the monitoring component detects that the drug solution has leaked into the subcutaneous tissue around the blood vessels and causes the microprocessor to control the alarm to output an alarm, the microprocessor will synchronously transmit the alarm signal and the ID address to the medical terminal.

[0016] According to one embodiment of the present invention, the alarm component further includes a power switch and a rechargeable battery disposed in the housing; Both the power switch and the rechargeable battery are connected to the microprocessor.

[0017] The beneficial effects of this invention are: Firstly, by embedding the pressure sensor, temperature sensor, and bioimpedance sensor inside the monitoring patch, this invention can detect physiological changes such as increased subcutaneous pressure, increased temperature, and decreased skin tissue impedance in the early stages of drug extravasation into the subcutaneous tissue around blood vessels. This is much earlier than visual observation and the patient's subjective feelings, enabling early warning before tissue damage occurs and significantly reducing the risk of complications such as redness, swelling, pain, ulceration, and necrosis caused by drug extravasation.

[0018] Secondly, this invention uses a multi-parameter fusion algorithm model combined with an autonomous learning unit, which can automatically collect and filter interference signals such as patient limb movement and sweating. It only triggers an alarm when at least two sensor parameters are synchronously abnormal and the time difference is within a preset range, effectively avoiding false alarms and missed alarms caused by the susceptibility of a single sensor to interference, and significantly improving the accuracy and reliability of monitoring and alarm.

[0019] Thirdly, the present invention uses gold-plated magnetic contacts to achieve rapid adsorption, energization and separation between the monitoring patch and the alarm component. Installation and disassembly are simple and do not require complicated wiring. The monitoring patch is a disposable medical consumable that complies with hospital infection control standards. The alarm component can be wiped, disinfected and recharged for reuse, which can significantly reduce clinical usage costs and balance hygiene and safety with economy.

[0020] Fourthly, this invention achieves dual reminders: on-site audible and visual alarms + remote early warning from medical staff terminals. When an alarm is triggered, the ID address of the patient's name, ward number, and bed number is uploaded simultaneously, enabling medical staff to quickly locate the patient and take timely action. This significantly improves the efficiency of emergency response to infusion care and reduces the risk of medical disputes.

[0021] Fifthly, the monitoring patch of the present invention uses a hydrocolloid base layer, which is mildly adhesive, breathable and hypoallergenic, with high skin adhesion and strong comfort; each sensor is embedded or shallowly applied, so it does not directly irritate the skin and does not affect the patient's normal limb movement, and is especially suitable for high-risk groups such as pediatrics, geriatrics, critically ill patients and cancer patients.

[0022] Sixthly, this invention combines multiple functions such as intravenous infusion fixation, real-time monitoring of multiple parameters, intelligent anti-interference alarm, status display, wireless transmission, and rechargeable battery life. The overall structure is compact and simple, and the operation is one-button start and stop. It perfectly fits the clinical nursing process and can directly replace traditional infusion dressings. It is highly practical, has high promotional value, and has excellent usage effect.

[0023] Seventhly, this invention is equipped with a rechargeable battery, a charging protection circuit, a battery power detection circuit, and a display screen, which can display information such as power level, working status, sensor parameters, and alarm information in real time. It is safe to charge and has controllable battery life, which can better meet the needs of long-term continuous infusion monitoring.

[0024] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure of the intelligent warning and alarm patching device of the present invention; Figure 2 This is a breakdown of the intelligent warning and alarm patch device of the present invention. Figure 1 ; Figure 3 yes Figure 2 Enlarged view of G in the middle; Figure 4 This is a breakdown of the intelligent warning and alarm patch device of the present invention. Figure 2 ; Figure 5 This is a schematic diagram of the internal circuit of the intelligent warning and alarm patching device of the present invention; Figure 6 This is a block diagram of the circuit for connecting the intelligent warning and alarm patch device of the present invention to a medical terminal; Figure 7 This is a product illustration showing the intelligent warning and alarm patch device of the present invention connected to a medical terminal; Figure label: Intelligent warning and alarm application device 1000; Monitoring patch 10; First magnetic contact 10a; magnetic contact A10a1; magnetic contact C10a2; magnetic contact E10a3; signal transmission layer 101; hydrocolloid base layer 102; pressure sensor 103; temperature sensor 104; bioimpedance sensor 105; flexible circuit board 106; tear film 107; tear loop 1071; Alarm component 20; Second magnetic contact 20a; Magnetic contact B20a1; Magnetic contact D20a2; Magnetic contact F20a3; Housing 201; First positioning slot 2011; Second positioning slot 2012; Third positioning slot 2013; Microprocessor 202; Alarm 203; Interference filtering module 204; Multi-parameter fusion algorithm model 2041; Autonomous learning unit 2042; Wireless module 205; Power switch 206; Rechargeable battery 207; Charging interface 208; Display screen 209; Charging protection circuit 210; Battery power detection circuit 211; Display circuit 212; Medical and nursing terminals 2000; The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] The embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0028] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "circumferential," and "radial," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] The intelligent warning alarm patching device 1000 of the present invention will now be described in detail with reference to the accompanying drawings.

[0033] Reference Figures 1 to 7 As shown, the intelligent warning alarm patch device 1000 provided according to an embodiment of the present invention includes a monitoring patch 10 and an alarm component 20 for outputting an alarm when the monitoring patch 10 detects that the drug solution has leaked into the subcutaneous tissue around the blood vessels. The monitoring patch 10 has a monitoring component embedded inside, and the upper surface of the monitoring patch 10 is provided with a first magnetic contact 10a connected to the monitoring component; the lower surface of the alarm component 20 is provided with a second magnetic contact 20a that is attracted to and electrically connected to the first magnetic contact 10a.

[0034] Based on the above, it is clear that in specific implementation, this application is mainly used as an intelligent warning alarm patching device 1000.

[0035] Specifically, when applying this application, the monitoring patch 10 of this application with the above-described structure is applied to the patient's skin surface to press against the puncture site of the patient's skin vein, so that the second magnetic contact 20a is attracted to and electrically connected to the first magnetic contact 10a. Then, the alarm component 20 of this application is activated. In this way, this application can be used easily.

[0036] When the monitoring component detects that the drug solution has leaked into the subcutaneous tissue around the patient's blood vessels, it will generate a feedback signal and transmit the generated feedback signal to the microprocessor 202 in real time through the first magnetic contact 10a and the second magnetic contact 20a. The microprocessor 202 will then control the alarm 203 to output an alarm in real time according to the feedback signal.

[0037] Clearly, the use of this application as described above will have the following technical effects: On the one hand, when administering intravenous infusion to a patient, if the medication extravasates into the subcutaneous tissue around the blood vessels, symptoms such as edema will appear in the subcutaneous tissue. At this time, when the monitoring component detects edema, it will generate a feedback signal and transmit the generated feedback signal in real time to the microprocessor 202 through the first magnetic contact 10a and the second magnetic contact 20a. The microprocessor 202 will then control the alarm 203 to output an alarm in real time based on the feedback signal, so as to better remind medical staff to come and check and treat the patient's intravenous puncture site. In this way, the use of this application can achieve timely early warning, and there is less lag in the early warning. It can be identified in the early stage of medication extravasation, much earlier than the traditional visual observation and related operations, which can significantly reduce the risk of subcutaneous tissue damage to patients.

[0038] On the other hand, the monitoring patch 10 described in this application is for single use, while the alarm component 20 described in this application is reusable, taking into account both hygiene and economy. Especially for the same patient, after the alarm component 20 is used once, it can be wiped and disinfected and reused. The connection between the alarm component 20 and the monitoring patch 10 is magnetic, which makes it very quick and convenient to install and remove, and greatly reduces the overall cost of this application, making it more acceptable to patients.

[0039] Furthermore, through the above-mentioned optimized design, the whole constituted by this application is highly practical and has a good effect in use.

[0040] Furthermore, in specific implementation, in accordance with... Figures 1 to 5 As shown, according to an embodiment of the present invention, the alarm component 20 includes a housing 201, a microprocessor 202 disposed in the housing 201, and an alarm 203 connected to the microprocessor 202; The lower bottom surface of the housing 201 is provided with a second magnetic contact 20a that is connected to the microprocessor 202; When the monitoring component detects that the drug solution has leaked into the subcutaneous tissue around the blood vessels, it will generate a feedback signal and transmit the generated feedback signal to the microprocessor 202 in real time through the first magnetic contact 10a and the second magnetic contact 20a. The microprocessor 202 will then control the alarm 203 to output an alarm in real time according to the feedback signal.

[0041] In a preferred embodiment, the alarm 203 is preferably an audible and visual alarm 203.

[0042] Furthermore, in specific implementation, in accordance with... Figure 2 As shown, according to an embodiment of the present invention, the monitoring patch 10 includes a signal transmission layer 101 and a hydrocolloid base layer 102 stacked from top to bottom; The signal transmission layer 101 has a first magnetic contact 10a on its upper surface; the hydrocolloid base layer 102 has an adhesive surface on its lower surface for attaching to the skin surface of the patient's intravenous infusion site to ensure a comfortable fit and breathability with low sensitivity; the monitoring component is embedded in the hydrocolloid base layer 102.

[0043] Preferably, in this technical solution, compared with Figure 2 , Figure 3 and Figure 4 As shown, according to one embodiment of the present invention, the monitoring component includes a pressure sensor 103 embedded in the hydrocolloid base layer 102; Wherein, the first magnetic contact 10a includes a magnetic contact A10a1 connected to the pressure sensor 103; the second magnetic contact 20a includes a magnetic contact B20a1 that is attracted to and electrically connected to the magnetic contact A10a1 and electrically connected to the microprocessor 202. When the drug solution extravasates into the subcutaneous tissue around the blood vessels, causing subcutaneous edema, and the pressure sensor 103 detects that the subcutaneous pressure rises above a preset pressure threshold, a first feedback signal is generated and transmitted to the microprocessor 202. The microprocessor 202 controls the alarm 203 to output an alarm based on the first feedback signal.

[0044] It should be noted that the pressure sensor 103 is embedded in the hydrocolloid base layer 102. When the drug solution extravasates into the subcutaneous tissue around the patient's vein, it will cause edema in the subcutaneous tissue around the vein. As long as there is edema, the skin at the venipuncture site will bulge and push against the pressure sensor 103. Thus, when the pressure sensor 103 detects that the subcutaneous pressure at the venipuncture site is greater than a preset pressure threshold, it will generate a first feedback signal and transmit the generated first feedback signal to the microprocessor 202 in real time. The microprocessor 202 will then control the alarm 203 to output an alarm based on the first feedback signal.

[0045] Therefore, this application uses pressure monitoring to monitor whether the medication extravasates into the subcutaneous tissue around the venous puncture site during intravenous infusion. The relevant operation is feasible and highly reliable.

[0046] In this application, based on statistical calibration from a large number of clinical trials, the preset pressure threshold is set to 2.0 kPa to 3.5 kPa, and preferably 2.75 kPa.

[0047] The relevant specific data example is as follows: Assuming the effective sensing area of ​​each pressure sensor 103 is approximately 1.0cm × 1.0cm = 0.0001m², then the required force is: F = 2750Pa × 0.0001m² ≈ 0.275N; converted to weight: 1N ≈ 100g, 0.275N ≈ 27.5g. That is to say, 2.75kPa requires only a slight upward pressure of about 25-30g to trigger the alarm.

[0048] In a preferred embodiment, a flexible circuit board 106 is embedded in the center of the hydrocolloid base layer 102. Multiple pressure sensors 103 are evenly arranged around the center of the flexible circuit board 106 and connected in parallel. Correspondingly, the upper surface of the magnetic contact A10a1 is provided with a positive terminal A connected to the first end of the multiple pressure sensors 103 and a negative terminal A connected to the second end of the multiple pressure sensors 103. The lower surface of the magnetic contact B20a1 is provided with a positive terminal B that elastically abuts against the positive terminal A and a negative terminal B that elastically abuts against the negative terminal A. Both the positive terminal B and the negative terminal B are connected to the microprocessor 202.

[0049] Thus, by setting up multiple pressure sensors 103 in actual use of this application, the following technical effects can be achieved: Expanding the pressure monitoring coverage: Multiple pressure sensors 103 are evenly arranged around the center of the flexible circuit board 106, which can cover a larger subcutaneous monitoring area around the venipuncture point, avoiding missed detection due to the extravasation location of the drug solution deviating from the detection area of ​​a single pressure sensor 103, thus improving the comprehensiveness of extravasation monitoring.

[0050] Improve monitoring sensitivity and accuracy; the pressure of skin edema may be unevenly distributed in subcutaneous tissue. Simultaneous acquisition of pressure signals from multiple points can more accurately capture abnormal changes in local pressure, reduce detection errors caused by differences in tissue elasticity and sensor position deviation, and effectively improve the sensitivity of early and slight extravasation of medication.

[0051] Enhanced detection reliability and anti-interference capability: Multiple pressure sensors 103 operate in parallel, enabling mutual verification and redundancy backup of pressure signals. When an individual pressure sensor 103 experiences signal abnormalities due to poor contact, local tissue activity, or other factors, the remaining normal pressure sensors 103 can still effectively output pressure signals, preventing the failure of a single pressure sensor 103 from causing the entire monitoring function to malfunction, thus significantly improving the system's operational stability.

[0052] It adapts to different puncture sites and individual differences; there are individual differences in subcutaneous tissue thickness and blood vessel location among different patients, and the skin bulge morphology of different puncture sites in the same patient is also different. Multi-point distributed monitoring can better adapt to different anatomical structures and edema diffusion patterns, ensuring effective detection of pressure increases caused by extravasation in various application scenarios.

[0053] Shorten alarm response delay; simultaneous monitoring at multiple points can capture local pressure changes in the early stage of extravasation more quickly, without waiting for edema to spread to the position of a single pressure sensor 103 to trigger a signal, which is conducive to achieving early warning of drug extravasation and buying more time for timely treatment.

[0054] Furthermore, in specific implementation, we will continue to refer to... Figure 2 , Figure 3 and Figure 4 As shown, according to one embodiment of the present invention, the monitoring component further includes a temperature sensor 104 embedded in the hydrocolloid base layer 102; The first magnetic contact 10a further includes a magnetic contact C10a2 connected to the temperature sensor 104; the second magnetic contact 20a further includes a magnetic contact D20a2 that is attracted to and electrically connected to the magnetic contact C10a2 and electrically connected to the microprocessor 202. When the drug solution extravasates into the subcutaneous tissue around the blood vessels, causing subcutaneous edema, and the temperature sensor 104 detects that the subcutaneous temperature rise is greater than a preset temperature threshold, a second feedback signal is generated and transmitted to the microprocessor 202. The microprocessor 202 controls the alarm 203 to output an alarm based on the second feedback signal.

[0055] It should be noted that the temperature sensor 104 is embedded in the hydrocolloid base layer 102. When the medication seeps into the subcutaneous tissue around the patient's veins, it causes edema. Edema will inevitably raise the skin temperature at the venipuncture site, a natural phenomenon caused by inflammation. This temperature rise is transmitted through the hydrocolloid base layer 102 to the temperature sensor 104. When the temperature sensor 104 detects that the subcutaneous temperature rise at the venipuncture site exceeds a preset temperature threshold, it generates a second feedback signal and transmits it to the microprocessor 202 in real time. The microprocessor 202 then controls the alarm 203 to output an alarm based on the second feedback signal.

[0056] Therefore, this application also uses temperature monitoring to monitor whether the medication leaks into the subcutaneous tissue around the venous puncture site during intravenous infusion. This operation is also feasible and highly reliable.

[0057] Thus, when this application combines pressure monitoring and temperature monitoring, the monitoring results will be more reliable and accurate, achieving a two-pronged approach.

[0058] The normal surface temperature of venous puncture sites in the limbs (back of the hand, forearm, elbow, etc.) is usually slightly lower than the core body temperature. Under normal ward conditions with an ambient temperature of 22℃~26℃, the normal basal temperature of the skin at the venous puncture site is generally 32.0℃~34.0℃. Therefore, in this application, through statistical calibration of a large number of clinical trials, the preset temperature threshold is set to 35.0℃~37.0℃, and preferably 36℃.

[0059] In a preferred embodiment, a plurality of temperature sensors 104 connected in parallel are evenly arranged around the center of the flexible circuit board 106. The plurality of temperature sensors 104 are correspondingly arranged beside the plurality of pressure sensors 103. Correspondingly, the upper surface of the magnetic contact C10a2 is provided with a positive terminal C connected to the first end of the plurality of temperature sensors 104 and a negative terminal C connected to the second end of the plurality of temperature sensors 104. The lower surface of the magnetic contact D20a2 is provided with a positive terminal D that elastically abuts against the positive terminal C and a negative terminal D that elastically abuts against the negative terminal C. Both the positive terminal D and the negative terminal D are connected to the microprocessor 202.

[0060] Thus, by setting up multiple temperature sensors 104 in actual use of this application, the following technical effects can be achieved: Expanding the temperature monitoring coverage: Multiple temperature sensors 104 are evenly distributed around the center of the flexible circuit board 106, which can cover a larger area of ​​subcutaneous tissue around the venipuncture point, avoiding the loss of detection of abnormal temperature due to the extravasation location of the drug solution deviating from the detection range of a single temperature sensor 104, and improving the comprehensiveness of extravasation monitoring.

[0061] Improve the sensitivity and early warning capabilities of temperature monitoring; local inflammation and tissue reaction caused by drug extravasation will first show a local temperature rise. Multi-point synchronous collection can accurately capture early and slight local temperature changes, and can identify abnormalities without waiting for the temperature to spread to a single point, which is conducive to the early detection of drug extravasation.

[0062] To improve detection accuracy and reduce environmental interference errors: Human skin surface temperature is easily affected by ambient temperature, limb activity, local blood flow fluctuations, etc. By using multiple temperature sensors 104 in parallel to collect signals, errors caused by local environmental interference can be effectively eliminated through multi-point data comparison and averaging, avoiding false alarms or missed alarms caused by single-point temperature drift.

[0063] Enhance system reliability and redundancy; multiple temperature sensors 104 are connected in parallel to form a redundant backup. When an individual temperature sensor 104 causes abnormal signal due to poor contact, tissue compression or its own failure, the remaining normal temperature sensors 104 can still output temperature data stably, ensuring that the temperature monitoring function is not interrupted, which can significantly improve the overall operational stability of the device.

[0064] Adapting to individual differences and different puncture sites: Different patients have different subcutaneous fat thickness, blood vessel location, and skin heat dissipation, resulting in varying temperature distribution characteristics at different puncture sites. Multi-point distributed temperature detection can better adapt to different anatomical structures and extravasation diffusion paths, ensuring reliable identification of abnormal temperature changes in various clinical scenarios.

[0065] In conjunction with the multi-point pressure sensor 103, the accuracy of the dual monitoring mode is further improved. The multi-point temperature and multi-point pressure signals corroborate and cross-verify each other, which can more accurately distinguish the pressure and temperature rise caused by drug leakage, as well as interference factors such as simple limb movement and body position compression. This can significantly reduce the false alarm rate and further improve the reliability and accuracy of the dual monitoring mode.

[0066] Furthermore, in specific implementation, it is still necessary to refer to... Figure 2 , Figure 3 and Figure 4 As shown, according to one embodiment of the present invention, the monitoring component further includes a bioimpedance sensor 105 embedded in the hydrocolloid base layer 102 and exposed on its lower surface; The first magnetic contact 10a further includes a magnetic contact E10a3 connected to the bioimpedance sensor 105; the second magnetic contact 20a further includes a magnetic contact F20a3 that is attracted to and electrically connected to the magnetic contact E10a3 and electrically connected to the microprocessor 202. When the drug solution extravasates into the subcutaneous tissue around the blood vessels, causing subcutaneous edema, and the bioimpedance sensor 105 detects that the skin impedance has decreased to below a preset impedance threshold, a third feedback signal is generated and transmitted to the microprocessor 202. The microprocessor 202 controls the alarm 203 to output an alarm based on the third feedback signal.

[0067] It should be noted that the bioimpedance sensor 105 is embedded in the hydrocolloid base layer 102 and exposed on the bottom surface of the hydrocolloid base layer 102. When the drug solution extravasates into the subcutaneous tissue around the patient's vein, it will cause edema symptoms in the subcutaneous tissue around the patient's vein. As long as there is edema, there will be more fluid accumulation in the subcutaneous tissue at the patient's vein puncture site, making the skin at the patient's vein puncture site more moist. The more moist the skin at the patient's vein puncture site, the lower the impedance generated after being connected to electricity. Thus, when the bioimpedance sensor 105 detects that the skin impedance at the patient's vein puncture site has dropped below the preset impedance threshold, it will generate a third feedback signal and transmit the generated third feedback signal to the microprocessor 202 in real time. The microprocessor 202 will then control the alarm 203 to output an alarm in real time based on the third feedback signal.

[0068] Therefore, this application also uses electrical impedance monitoring to monitor whether the medication extravasates into the subcutaneous tissue around the venous puncture site during intravenous infusion. The relevant operation is feasible and very reliable.

[0069] Thus, when this application combines pressure monitoring, temperature monitoring, and impedance monitoring, the monitoring results become more reliable and accurate, achieving a comprehensive approach and making the considerations more thorough.

[0070] Under the condition of using low-frequency AC excitation (frequency 10kHz to 100kHz) for bioimpedance detection, the impedance value of normal skin and subcutaneous tissue at the human venous puncture site is usually 500Ω to 2000Ω. Therefore, in this application, through statistical calibration of a large number of clinical trials, the preset impedance threshold is set to 300Ω to 450Ω, and preferably 400Ω.

[0071] In a preferred embodiment, the flexible circuit board 106 is further provided with a plurality of bioimpedance sensors 105 that are connected in parallel and exposed on the bottom surface of the hydrocolloid substrate 102, evenly arranged around its center. The plurality of bioimpedance sensors 105 are correspondingly arranged between adjacent groups of pressure sensors 103 and temperature sensors 104 to separate the pressure sensors 103 and temperature sensors 104 that are arranged close together. Correspondingly, the upper end surface of the magnetic contact E10a3 is provided with a positive terminal E connected to the first end of the plurality of bioimpedance sensors 105 and a negative terminal E connected to the second end of the plurality of bioimpedance sensors 105. The bottom surface of the magnetic contact F20a3 is provided with a positive terminal F that elastically abuts against the positive terminal E and a negative terminal F that elastically abuts against the negative terminal E. Both the positive terminal F and the negative terminal F are connected to the microprocessor 202.

[0072] Thus, by setting up multiple bioimpedance sensors 105 in actual use of this application, the following technical effects can be achieved: Expanding the impedance monitoring coverage and avoiding missed detections: Multiple bioimpedance sensors 105 are evenly arranged around the center of the flexible circuit board 106, which can cover a larger area of ​​subcutaneous tissue monitoring around the puncture site, avoiding the failure to detect impedance changes in time due to the blind spot of a single bioimpedance sensor 105, and improving the comprehensiveness of extravasation identification.

[0073] Improve the sensitivity of early extravasation detection; extravasation of drug solution will increase subcutaneous tissue fluid and change electrolyte concentration, which will directly lead to a rapid decrease in local impedance. Multi-point synchronous acquisition can capture small local impedance changes earlier, and can trigger early warning without waiting for edema and temperature rise to spread significantly, thus achieving earlier monitoring of drug extravasation.

[0074] To improve detection accuracy and reduce interference and misjudgments, factors such as sweat on the skin surface, poor local contact, and slight limb movements can all affect single-point impedance measurements. Using multiple 105 bioimpedance sensors in parallel for acquisition and comparative verification effectively eliminates environmental and operational interference, preventing false alarms or missed alarms caused by abnormal single-point signals.

[0075] Signal redundancy is formed to improve system reliability; multiple bioimpedance sensors 105 work in parallel to achieve functional redundancy. When individual bioimpedance sensors 105 fail due to poor contact, pressure displacement or self-fault, the remaining bioimpedance sensors 105 can still collect impedance signals normally, ensuring the continuous and stable impedance monitoring function and improving the overall operational reliability of the device.

[0076] Optimize the spatial layout and reduce mutual interference between sensors; multiple bioimpedance sensors 105 are correspondingly set between adjacent groups of pressure sensors 103 and temperature sensors 104, and the three types of sensors are reasonably separated, which can effectively avoid mutual interference between different types of sensors in signal acquisition or electromagnetic characteristics, and ensure that the pressure, temperature and impedance detection signals are stable and accurate.

[0077] It adapts to individual differences and variations in extravasation diffusion paths; different patients have differences in subcutaneous fat thickness, tissue conductivity, and blood vessel location, resulting in different directions and speeds of drug extravasation. Multi-point distributed impedance detection can better adapt to different clinical scenarios, ensuring timely detection regardless of the direction of extravasation.

[0078] By integrating multi-dimensional data such as pressure and temperature, the accuracy of comprehensive judgment is further improved. The cross-verification and comparison of multi-point impedance signals with multi-point pressure signals and multi-point temperature signals can more accurately distinguish between drug extravasation and interference from factors such as ordinary body position compression, skin sweating, and local blood flow fluctuations, significantly reducing the overall false alarm rate and making the three-in-one monitoring mode more rigorous and reliable.

[0079] Secondly, in specific implementation, refer to Figure 5 As shown, according to an embodiment of the present invention, the alarm component 20 further includes an interference filtering module 204 disposed in the housing 201 and connected to the microprocessor 202; the interference filtering module 204 has a built-in multi-parameter fusion algorithm model 2041 and an autonomous learning unit 2042. The multi-parameter fusion algorithm model 2041 is electrically connected to the pressure sensor 103, the temperature sensor 104 and the bioimpedance sensor 105, respectively. Furthermore, the autonomous learning unit 2042 is used to collect interference signal feature data caused by patient activity and sweating, and iteratively optimize the weight parameters of the multi-parameter fusion algorithm model 2041 based on the interference signal feature data. Based on this, the multi-parameter fusion algorithm model 2041 described in this application is used to fuse the pressure data of the pressure sensor 103, the temperature data of the temperature sensor 104, and the impedance data of the bioimpedance sensor 105 in real time to generate fused detection data. When the fusion detection data meets the preset fusion alarm conditions, the microprocessor 202 controls the alarm 203 to output an alarm. When the fused detection data is triggered by a single sensor and is determined to be an interference signal, the multi-parameter fusion algorithm model 2041 filters the interference signal to prevent the alarm 203 from outputting an alarm.

[0080] Furthermore, according to an embodiment of the present invention, the fusion alarm condition is that at least two of the following conditions are met: the pressure rise value corresponding to the pressure data is greater than a preset pressure threshold, the temperature rise value corresponding to the temperature data is greater than a preset temperature threshold, and the impedance data is reduced to below a preset impedance threshold, and the trigger time difference of each data is within a preset time range, such as within 5 seconds, to ensure accurate judgment of drug leakage.

[0081] It should be noted that when a patient is lying on a nursing bed, there may be slight movement at the puncture site of the intravenous infusion in the limb, which may cause the pressure sensor 103 to be squeezed and thus misinterpret the pressure sensor 103. In addition, the skin at the puncture site of the intravenous infusion in the limb may sweat, which may affect the misinterpretation of the bioimpedance sensor 105.

[0082] In response, this application provides an interference filtering module 204 that includes a built-in multi-parameter fusion algorithm model 2041 and an autonomous learning unit 2042. The autonomous learning unit 2042 is used to collect interference signal feature data caused by patient activity and sweating, and iteratively optimizes the weight parameters of the multi-parameter fusion algorithm model 2041 based on the interference signal feature data. Accordingly, in specific implementation, this application uses the multi-parameter fusion algorithm model 2041 to fuse the pressure data of the pressure sensor 103, the temperature data of the temperature sensor 104, and the impedance data of the bioimpedance sensor 105 in real time to generate fused detection data.

[0083] When the fused detection data meets at least two of the preset fused alarm conditions, namely, "the pressure rise value corresponding to the pressure data is greater than the preset pressure threshold, the temperature rise value corresponding to the temperature data is greater than the preset temperature threshold, and the impedance data is reduced to below the preset impedance threshold, and the trigger time difference of each data is within the preset time range", the microprocessor 202 will control the alarm 203 to output an alarm. Conversely, when the fused detection data is triggered by a single sensor and is determined to be an interference signal, the multi-parameter fusion algorithm model 2041 will filter out the interference signal to prevent the alarm 203 from outputting an alarm, so as to avoid false alarms as much as possible.

[0084] Therefore, by setting the interference filtering module 204, which includes a built-in multi-parameter fusion algorithm model 2041 and an autonomous learning unit 2042, this application can further enhance the accuracy of monitoring and alarming for drug extravasation into the subcutaneous tissue around the puncture site of the patient's intravenous infusion vessel, thus making the overall reliability of this application better.

[0085] Furthermore, in specific implementation, in accordance with... Figure 6 and Figure 7 As shown, according to an embodiment of the present invention, the alarm component 20 further includes a wireless module 205 disposed within the housing 201 for connecting to an external medical terminal 2000; The microprocessor 202 has an ID address that is bound to the patient's name, ward number, and bed number; the wireless module 205 is connected to the microprocessor 202, and the wireless module 205 is preferably a Bluetooth module or a wireless WiFi module. When the monitoring component detects that the drug solution has leaked into the subcutaneous tissue around the blood vessels, and the microprocessor 202 controls the alarm 203 to output an alarm, the microprocessor 202 synchronously transmits the alarm signal and the ID address to the medical terminal 2000.

[0086] Therefore, it is clear that this application can provide multi-level alarms for extravasation of medication into the subcutaneous tissue around the patient's veins. On the one hand, the microprocessor 202 controls the alarm 203 to output an alarm, enabling nearby alarms so that the patient and / or their family members are promptly informed and can call medical staff for assistance. On the other hand, the alarm signal and the ID address are simultaneously transmitted to the medical terminal 2000 for remote alarm, allowing medical staff to promptly identify which ward, bed, or patient experienced extravasation of medication into the subcutaneous tissue around their veins during intravenous infusion. This ensures precise location of the monitoring and alarm, making the monitoring and alarm system work in tandem, greatly improving the timeliness of monitoring and alarms and significantly enhancing the responsiveness of medical staff in handling the situation.

[0087] At the same time, in specific implementation, in accordance with Figure 1 , Figure 2 and Figure 5 As shown, according to an embodiment of the present invention, the alarm component 20 further includes a power switch 206 and a rechargeable battery 207 disposed in the housing 201; The power switch 206 and the rechargeable battery 207 are both connected to the microprocessor 202.

[0088] Therefore, by setting the power switch 206, the one-button start and stop of this application can be realized, so that the application can be started and used when needed, and turned off and put into standby mode when not needed. By setting the rechargeable battery 207, it can be made rechargeable, so that the application can be used continuously.

[0089] Preferably, in this technical solution, the comparison continues. Figure 1 , Figure 2 and Figure 5 As shown, according to an embodiment of the present invention, the alarm component 20 further includes a charging interface 208 and a display screen 209 disposed on the housing 201; The charging interface 208 is connected to the rechargeable battery 207 via a charging protection circuit 210 connected to the microprocessor 202; the rechargeable battery 207 is connected to the microprocessor 202 via a battery power detection circuit 211; and the display screen 209 is connected to the microprocessor 202 via a display circuit 212, and is used to display the power level of the rechargeable battery 207, the working status of the alarm component 20, the parameters of each sensor, and alarm information.

[0090] Therefore, by setting the charging interface 208 to be connected to an external power source, the rechargeable battery 207 can be charged intermittently, so that the application can be used uninterruptedly. The display screen 209 can display the power level of the rechargeable battery 207 in real time, so as to better remind medical staff to charge the rechargeable battery 207 in time when the power is low, so as to meet the occasional needs of the application. In addition, the display screen 209 can also display the working status of the alarm component 20, the parameters of each sensor, and alarm information in real time, so that the use of the application will be clear at a glance.

[0091] It should be added that, in specific implementation, the intelligent warning alarm patch device 1000 provided according to the embodiment of the present invention has gold-plated magnetic contacts 10a and 20a, which have low contact resistance, stable conductivity and oxidation resistance, and at the same time realize the rapid adsorption connection and separation of the alarm component 20 and the monitoring patch 10.

[0092] Furthermore, it is necessary to add that, in specific implementation, comparison should be made with... Figure 4As shown, the bottom surface of the housing 201 is provided with a first positioning groove 2011, a second positioning groove 2012, and a third positioning groove 2013, the outer diameters of which are slightly larger than the outer diameters of the magnetic contact A10a1, the magnetic contact C10a2, and the magnetic contact E10a3. The magnetic contacts B20a1, D20a2, and F20a3 included in the second magnetic contact 20a are located on the inner top surfaces of the first positioning groove 2011, the second positioning groove 2012, and the third positioning groove 2013, respectively. Thus, when the magnetic contact B20a1 is magnetically attracted and fixed to the magnetic contact A10a1, the magnetic contact D20a2 is magnetically attracted and fixed to the magnetic contact C10a2, and the magnetic contact F20a3 is magnetically attracted and fixed to the magnetic contact E10a3, the magnetic contacts A10a1, C10a2, and E10a3 can be well fitted and enclosed, making the connection between the alarm component 20 and the monitoring patch 10 stable and not prone to circumferential displacement or loosening, so that the overall use of this application will be more stable and reliable.

[0093] Furthermore, the magnetic contact B20a1 is magnetically attracted to and fixed to the magnetic contact A10a1 to achieve electrical connection, the magnetic contact D20a2 is magnetically attracted to and fixed to the magnetic contact C10a2 to achieve electrical connection, and the magnetic contact F20a3 is magnetically attracted to and fixed to the magnetic contact E10a3 to achieve electrical connection. This is widely used in the prior art and is a mature technology. For example, a magnetic contact wire is used to connect a smart bracelet to charge it. Therefore, the relevant details in this application will not be described in detail here.

[0094] Furthermore, in specific implementations, the pressure sensor 103 described in this application is preferably a flexible thin-film pressure sensor 103, and the temperature sensor 104 described in this application is preferably a flexible thin-film temperature sensor 104, so that they can all be bent and have good flexibility during use. The bioimpedance sensor 105 described in this application is preferably a flexible silver / silver chloride electrode (Ag / AgCl) to ensure good biocompatibility, suitability for long-term application, and stable impedance.

[0095] Furthermore, in specific implementation, in accordance with Figure 1 and Figure 2As shown, a tear-off film 107 is provided on the bottom surface of the hydrocolloid base layer 102, and tear loops 1071 are provided on the edge of the tear-off film 107. Before using the monitoring patch 10 described in this application, the adhesive surface formed on the bottom surface of the hydrocolloid base layer 102 is protected by the tear-off film 107, making it less susceptible to contamination. When using, pinch the tear loops 1071 to tear off the tear-off film 107, and align the center of the bottom surface of the hydrocolloid base layer 102 with the venous puncture site and stick it to the patient's skin.

[0096] Other embodiments, etc., will not be described here.

[0097] In summary, the intelligent warning and alarm patch device 1000 provided in this application has the following outstanding technical effects compared with the prior art in specific implementation: Firstly, the extravasation warning is timely with virtually no monitoring lag. By embedding the pressure sensor 103, temperature sensor 104, and bioimpedance sensor 105 inside the monitoring patch 10, this invention can detect physiological changes such as increased subcutaneous pressure, increased temperature, and decreased skin tissue impedance in the early stages of drug extravasation into the subcutaneous tissue around blood vessels. This is much earlier than visual observation and the patient's subjective feelings, enabling early warning before tissue damage occurs and significantly reducing the risk of complications such as redness, swelling, pain, ulceration, and necrosis caused by drug extravasation.

[0098] Secondly, the multi-parameter fusion judgment has strong anti-interference ability and accurate alarm. The present invention adopts a multi-parameter fusion algorithm model 2041 combined with an autonomous learning unit 2042, which can automatically collect and filter interference signals such as patient limb movement and sweating. The alarm is triggered only when at least two sensor parameters are synchronously abnormal and the time difference is within the preset range. This effectively avoids false alarms and missed alarms caused by the susceptibility of a single sensor to interference, and significantly improves the accuracy and reliability of monitoring and alarm.

[0099] Thirdly, the magnetic connection makes assembly and disassembly convenient and economical. This invention uses gold-plated magnetic contacts to achieve rapid adsorption, energization, and separation between the monitoring patch 10 and the alarm component 20. Installation and disassembly are simple and do not require complex wiring. The monitoring patch 10 is a disposable medical consumable that complies with hospital infection control standards. The alarm component 20 can be wiped, disinfected, and recharged for reuse, which can significantly reduce clinical usage costs and balance hygiene and safety with economy.

[0100] Fourthly, local and remote synchronous alarms ensure efficient response. This invention achieves dual reminders: on-site audible and visual alarms plus remote early warning from the medical terminal 2000. When an alarm is triggered, the ID address of the patient's name, ward number, and bed number is uploaded simultaneously, enabling medical staff to quickly locate the patient and handle the situation promptly. This significantly improves the efficiency of emergency response to infusion care and reduces the risk of medical disputes.

[0101] Fifthly, the structure conforms to the human body, making it comfortable and safe to use. The monitoring patch 10 of this invention uses a hydrocolloid base layer 102, which is mildly adhesive, breathable and hypoallergenic, with high skin adhesion and strong comfort. The embedded or shallow-applied design of each sensor does not directly irritate the skin and does not affect the patient's normal limb activities, making it especially suitable for high-risk groups such as pediatricians, geriatricians, critically ill patients, and cancer patients.

[0102] Sixth, it integrates functions and has strong clinical applicability; the invention combines multiple functions such as intravenous infusion fixation, real-time monitoring of multiple parameters, intelligent anti-interference alarm, status display, wireless transmission, and rechargeable battery life. The overall structure is compact and simple, and the operation is one-button start and stop. It is completely in line with the clinical nursing process and can directly replace traditional infusion dressings. It is highly practical, has high promotional value, and has excellent usage effect.

[0103] Seventhly, the power supply and display are complete, and the battery life is stable and controllable. The present invention is equipped with a rechargeable battery 207, a charging protection circuit 210, a battery power detection circuit 211 and a display screen 209, which can display information such as power level, working status, sensor parameters and alarm information in real time. It is safe to charge and the battery life is controllable, which can better meet the needs of long-term continuous infusion monitoring.

[0104] Furthermore, the intelligent warning alarm patch device 1000 provided in this application is indeed highly practical and has excellent performance, which makes this application inherently valuable for market promotion and will certainly be very popular and widely adopted.

[0105] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0106] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made under the inventive concept of the present invention using the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An intelligent warning and alarm patching device, characterized in that, Includes a monitoring patch and an alarm component for outputting an alarm when the monitoring patch detects extravasation of the drug solution into the perivascular subcutaneous tissue; The monitoring patch has a monitoring component embedded inside, and the upper surface of the monitoring patch has a first magnetic contact that is connected to the monitoring component; the lower surface of the alarm component has a second magnetic contact that is attracted to and electrically connected to the first magnetic contact.

2. The intelligent warning and alarm patching device according to claim 1, characterized in that, The alarm component includes a housing, a microprocessor housed in the housing, and an alarm connected to the microprocessor; A second magnetic contact is provided on the bottom surface of the housing; When the monitoring component detects the extravasation of the drug solution into the subcutaneous tissue around the blood vessels, it generates a feedback signal and transmits the feedback signal to the microprocessor. The microprocessor then controls the alarm to output an alarm based on the feedback signal.

3. The intelligent warning and alarm patching device according to claim 2, characterized in that, The monitoring patch consists of a signal transmission layer and a hydrocolloid base layer stacked from top to bottom; The upper surface of the signal transmission layer is provided with a first magnetic contact; the lower surface of the hydrocolloid base layer is an adhesive surface; the monitoring component is embedded in the hydrocolloid base layer.

4. The intelligent warning and alarm patching device according to claim 3, characterized in that, The monitoring components include pressure sensors embedded in the hydrocolloid substrate; The first magnetic contact includes magnetic contact A connected to the pressure sensor; the second magnetic contact includes magnetic contact B that is attracted to and electrically connected to magnetic contact A and electrically connected to the microprocessor. When the drug solution extravasates into the subcutaneous tissue around the blood vessels, causing subcutaneous edema, and the pressure sensor detects that the subcutaneous pressure rises above a preset pressure threshold, a first feedback signal is generated and transmitted to the microprocessor. The microprocessor then controls the alarm to output an alarm based on the first feedback signal.

5. The intelligent warning and alarm patching device according to claim 4, characterized in that, The monitoring components also include a temperature sensor embedded in the hydrocolloid substrate; The first magnetic contact also includes a magnetic contact C connected to the temperature sensor; the second magnetic contact also includes a magnetic contact D that is attracted to and electrically connected to the magnetic contact C and electrically connected to the microprocessor. When the drug solution extravasates into the subcutaneous tissue around the blood vessels, causing subcutaneous edema, and the temperature sensor detects that the subcutaneous temperature rise exceeds a preset temperature threshold, a second feedback signal is generated and transmitted to the microprocessor. The microprocessor then controls the alarm to output an alarm based on the second feedback signal.

6. The intelligent warning and alarm patching device according to claim 5, characterized in that, The monitoring components also include a bioimpedance sensor embedded in the hydrocolloid base layer and exposed on its underside. The first magnetic contact also includes a magnetic contact E connected to the bioimpedance sensor; the second magnetic contact also includes a magnetic contact F that is attracted to and electrically connected to the magnetic contact E and electrically connected to the microprocessor. When the drug solution extravasates into the subcutaneous tissue around the blood vessels, causing subcutaneous edema, and the bioimpedance sensor detects that the skin impedance has decreased to below a preset impedance threshold, a third feedback signal is generated and transmitted to the microprocessor. The microprocessor then controls the alarm to output an alarm based on the third feedback signal.

7. The intelligent warning and alarm patching device according to claim 6, characterized in that, The alarm component also includes an interference filtering module connected to the microprocessor and located in the housing; the interference filtering module has a built-in multi-parameter fusion algorithm model and an autonomous learning unit. The multi-parameter fusion algorithm model is electrically connected to the pressure sensor, temperature sensor, and bioimpedance sensor, respectively. The autonomous learning unit is used to collect feature data of interference signals caused by patient activity and sweating, and iteratively optimizes the weight parameters of the multi-parameter fusion algorithm model based on the feature data of interference signals. The multi-parameter fusion algorithm model is used to fuse pressure data from a pressure sensor, temperature data from a temperature sensor, and impedance data from a bioimpedance sensor in real time to generate fused detection data. When the fused detection data meets the preset fused alarm conditions, the microprocessor controls the alarm to output an alarm. When the fused detection data is triggered by a single sensor and is determined to be an interference signal, the multi-parameter fusion algorithm model filters out the interference signal to prevent the alarm from outputting an alarm.

8. The intelligent warning and alarm patching device according to claim 7, characterized in that, The fusion alarm conditions are: at least two of the following must be met: the pressure rise value corresponding to the pressure data is greater than the preset pressure threshold, the temperature rise value corresponding to the temperature data is greater than the preset temperature threshold, and the impedance data decreases to below the preset impedance threshold, and the trigger time difference of each data is within the preset time range.

9. The intelligent warning and alarm patching device according to any one of claims 2-8, characterized in that, The alarm component also includes a wireless module housed within the housing for connecting to an external medical terminal; The microprocessor has a built-in ID address that binds patient name, ward number, and bed number information; the wireless module is connected to the microprocessor. When the monitoring component detects that the drug solution has leaked into the subcutaneous tissue around the blood vessels and causes the microprocessor to control the alarm to output an alarm, the microprocessor will synchronously transmit the alarm signal and ID address to the medical terminal.

10. The intelligent warning and alarm patching device according to any one of claims 2-8, characterized in that, The alarm components also include a power switch and a rechargeable battery located in the housing; The power switch and rechargeable battery are both connected to the microprocessor.

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