Residue monitoring device and medical equipment

Abstract

The invention relates to an allowance monitoring device and medical equipment, the allowance monitoring device is used for being arranged on a fixing structure, the allowance monitoring device comprises a bearing piece, a connecting piece and a sensor, and the bearing piece is used for bearing a to-be-monitored medium container; the connecting piece is movably arranged on the fixing structure and connected with the bearing piece. The sensor detects the load at the bearing piece through the connecting piece so as to obtain the weight of the medium container to be monitored.

Description

Technical Field

[0001] This application relates to the field of fluid flow monitoring technology, and in particular to a residual monitoring device and medical equipment. Background Technology

[0002] Currently, in vitro diagnostic analysis equipment often relies on cleaning agents to clean key components during operation, making the monitoring of cleaning agent consumption crucial for equipment management. Traditional technologies often employ precision metering pumps (such as peristaltic pumps and piston pumps) to achieve quantitative delivery of cleaning agents. Precision metering pumps can achieve high dispensing accuracy, and combined with presence sensors, they can monitor whether the cleaning agent in the container is depleted.

[0003] However, the simple "present / absent" monitoring methods described above cannot provide predictive information such as consumption rate and remaining usage time, making it difficult to proactively warn of detergent depletion. In other words, traditional monitoring systems struggle to effectively monitor the remaining amount of detergent. Summary of the Invention

[0004] Therefore, it is necessary to provide a balance monitoring device and medical equipment to address the above problems.

[0005] This application provides a balance monitoring device, which is installed on a fixed structure. The balance monitoring device includes a support, a connector, and a sensor. The support is used to support a container of medium to be monitored. The connector is movably installed on the fixed structure and connected to the support. The sensor detects the load at the support through the connector to obtain the weight of the container of medium to be monitored.

[0006] In one embodiment, the connector is rotatably engaged with the fixed structure to form a lever, with one end of the connector connected to the support and the other end abutting against the sensor.

[0007] In one embodiment, the connector includes a fulcrum portion that is rotatably engaged with the fixed structure; the lever arm of the weight of the support member and the container of the medium to be monitored is a first lever arm, and the lever arm of the counterforce provided by the sensor to the connector is a second lever arm; the length of the first lever arm is greater than the length of the second lever arm.

[0008] In one embodiment, the length of the first lever arm is L1, and the length of the second lever arm is L2, where 5*L2≤L1≤15*L2.

[0009] In one embodiment, the connector includes a fulcrum portion and a first rod and a second rod connected to opposite sides of the fulcrum portion. The fulcrum portion is rotatably engaged with the fixed structure. The first rod is connected to the support member, and the second rod abuts against the sensor. The extension direction of the first rod intersects the extension direction of the second rod.

[0010] In one embodiment, the connector is configured as a spring, and the sensor detects the amount of deformation of the connector to obtain the amount of weight change of the container of the medium to be monitored.

[0011] In one embodiment, the balance monitoring device further includes a base, and the two ends of the connector abut against the support and the base respectively, and at least two connectors are located side by side and evenly spaced between the support and the base.

[0012] In one embodiment, a plurality of the connectors are arranged in an array, with the sensor located at the geometric center of the array of connectors.

[0013] In one embodiment, the number of connectors is two, and the sensor is located at the midpoint of the line connecting the locations of the two connectors.

[0014] In one embodiment, the connector is detachably provided.

[0015] This application also provides a medical device that includes the balance monitoring device described above.

[0016] In the aforementioned residual volume monitoring device, the support member is used to support the container, and the connector is movably mounted on the fixed structure and connected to the support member. Therefore, changes in the flow rate of the medium inside the container will cause corresponding movement of the connector and / or changes in the force on the connector. Thus, the sensor detects the load at the support member through the connector, thereby obtaining the weight of the container. In this application, the real-time weight of the container can be directly and effectively obtained by weighing, thereby obtaining the residual volume of the medium inside the container, achieving the purpose of accurately and effectively monitoring the residual volume of the cleaning agent.

[0017] Furthermore, instead of directly weighing the container of the medium to be monitored, the sensor in this application detects the load at the support member through a connector. In this case, the connector, acting as an intermediary, can amplify or reduce the load at the support member, facilitating high-precision detection by the sensor. The connector, as an intermediary, can also change the direction of load transmission, allowing for flexible sensor installation and simplifying the structure. The connector, as an intermediary, also improves the positional stability of the support member, enabling the sensor to stably detect the load at the support member. Attached Figure Description

[0018] Figure 1This is a schematic diagram of an exemplary multi-position float sensor provided in an embodiment of this application.

[0019] Figure 2 This is an isometric view of the balance monitoring device and container provided in an embodiment of this application.

[0020] Figure 3 This is a front view of a margin monitoring device provided in the first aspect of an embodiment of this application.

[0021] Figure 4 This is a front view of a margin monitoring device provided in a second aspect of an embodiment of this application.

[0022] Figure 5 This is a front view of a margin monitoring device provided in a third aspect of an embodiment of this application.

[0023] Reference numerals: 10, Balance monitoring device; 20, Container; 30, Multi-position float sensor; 31, Center rod; 32, Float; 100, Support; 110, Receiving groove; 200, Connector; 210, Support point; 220, First rod; 230, Second rod; 300, Sensor; 400, Base. Detailed Implementation

[0024] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0025] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0026] Furthermore, where the terms "first" and "second" appear, these terms are 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 with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0030] Currently, some medical devices are cleaned and maintained using cleaning agents. Taking in vitro diagnostic equipment as an example, cleaning agents can remove various substances remaining on critical components during analysis, preventing interference with subsequent tests. This includes preventing cross-contamination, maintaining the cleanliness of optical systems, and ensuring the unobstructed and accurate operation of fluid circuits and sensors. Most current in vitro diagnostic equipment uses precision metering pumps (such as peristaltic pumps and piston pumps) to quantitatively deliver the cleaning agent. Theoretically, the amount of cleaning agent used can be controlled by the metering pump, thus allowing for the estimation of the remaining cleaning agent in the container. However, the accuracy of estimating the remaining cleaning agent using this control system is highly dependent on the precision of the metering pump. That is, the control system is an open-loop system, lacking direct feedback on the remaining cleaning agent in the container, thus failing to form a closed loop and resulting in low overall reliability. Furthermore, sensors installed inside the container can mostly only detect whether the cleaning agent is depleted, making it difficult to monitor the remaining cleaning agent level and posing a risk of not being able to replenish the cleaning agent in a timely manner.

[0031] like Figure 1 One traditional solution involves installing multiple float sensors 30 within the container to detect the liquid level of the cleaning agent. Each multiple float sensor 30 includes a central rod 31 and multiple floats 32. The central rod 31 is placed vertically within the container, and the floats 32 are arranged sequentially along the axial direction of the central rod 31 to correspond to different liquid level heights, thus detecting changes in the cleaning agent level. However, limited by the number and range of motion of the floats 32, the detection accuracy of the multiple float sensor 30 is limited, making it unsuitable for applications requiring high precision in monitoring cleaning agent consumption.

[0032] To resolve the above issues, please refer to [link / reference]. Figure 2 One embodiment of this application provides a residual volume monitoring device 10, which can be used to detect the residual volume and flow rate changes of the medium in the medium container 20 to be monitored online. The residual volume monitoring device 10 can be mounted on a fixed structure or other supporting mechanism.

[0033] The balance monitoring device 10 includes a support 100, a connector 200, and a sensor 300. The support 100 and connector 200 are mounted on a fixed structure. The support 100 supports the container 20 (hereinafter referred to as container 20) containing the medium to be monitored. Therefore, the weight of the medium inside the container 20 and the amount of weight change can be detected by the sensor 300 through the support 100. The connector 200 is movably mounted on the fixed structure and connected to the support 100. The sensor 300 detects the load at the support 100 through the connector 200 to obtain the weight of the container 20 containing the medium to be monitored.

[0034] In the aforementioned residual monitoring device 10, the support member 100 supports the container 20, and the connector 200 is movably disposed on the fixed structure and connected to the support member 100. Therefore, changes in the flow rate of the medium within the container 20 will cause corresponding movement of the connector 200 and / or changes in the force on the connector 200. Thus, the sensor 300 detects the load at the support member 100 through the connector 200, thereby obtaining the weight of the container 20. In this application, the real-time weight of the container 20 can be directly and effectively obtained by weighing, thereby obtaining the residual amount of the medium within the container 20, achieving the purpose of accurately and effectively monitoring the residual amount of cleaning agent.

[0035] Furthermore, instead of directly weighing the container 20, in this application, the sensor 300 detects the load at the support member 100 via the connector 200. In this case, the connector 200 acts as an intermediary, amplifying or reducing the load at the support member 100 to enable the sensor 300 to achieve high-precision detection. For example, the load at the support member 100 can be amplified by the connector 200, allowing even minute changes in flow rate within the container 20 to be detected, reducing the accuracy requirements of the sensor 300 and controlling costs.

[0036] Furthermore, the connector 200, acting as an intermediate component, can change the direction of load transmission, allowing the sensor 300 to be installed flexibly, thereby simplifying the structure. The connector 200, as an intermediate component, can also improve the positional stability of the support 100, facilitating stable detection of the load at the support 100 by the sensor 300.

[0037] Understandably, by repeatedly detecting load changes at the support at preset time intervals, the flow rate changes and trends of the medium inside container 20 can be obtained, which facilitates the prediction of the medium's consumption rate and depletion time.

[0038] Please see Figure 3 As one example, the connector 200 rotatably engages with the fixed structure to form a lever. One end of the connector 200 is connected to the support 100, and the other end abuts against the sensor 300. Thus, the weight of the container 20 and the support 100 can be transmitted to the sensor 300 through the connector 200, allowing the sensor 300 to detect the real-time weight of the container 20 and the support 100. It can be understood that by detecting the real-time weight of the container 20 and the support 100 at preset time intervals, the sensor 300 can obtain the weight change of the container 20 within the preset time interval, thereby calculating the consumption of cleaning agent within the container 20 and achieving real-time monitoring of the remaining cleaning agent. In this embodiment, the sensor 300 is configured as a force sensor, i.e., the sensor is a force-measuring sensor.

[0039] Furthermore, the data detected by sensor 300 can be used to reverse verify whether the cleaning agent suction device (such as a peristaltic pump, syringe, or metering pump) is operating normally. Understandably, when the cleaning agent suction device is operating normally, the flow rate it draws within a preset time interval should match the flow rate change detected by sensor 300 within the error operating range. If they match, the cleaning agent suction device is operating normally; otherwise, it indicates that the cleaning agent suction device may be faulty and not operating normally.

[0040] It should be noted that when the connector 200 acts as a lever, the sensor 300 can be fixedly installed. That is, when the connector 200 acts as a lever, it is in a state of torque balance, and the sensor 300 can obtain the weight change of the container 20 by detecting the change in force transmitted by the connector 200.

[0041] Please see Figure 3 In one embodiment, the connector 200 includes a fulcrum portion 210, a first rod 220, and a second rod 230. The fulcrum portion 210 is rotatably engaged with a fixed structure. The first rod 220 and the second rod 230 are respectively connected to opposite sides of the fulcrum portion 210. The first rod 220 is connected to the support member 100, and the second rod 230 abuts against the sensor 300. The weight of the container 20 and the support member 100 is transmitted to the sensor 300 through the first rod 220, the fulcrum portion 210, and the second rod 230.

[0042] At the fulcrum 210, the lever arm of the weight of the support member 100 and the container 20 to be monitored is the first lever arm, and the lever arm of the counterforce provided by the sensor 300 to the connector 200 is the second lever arm. In conjunction with the foregoing, since the connector 200 is in a torque balance state, the proportional relationship between the weight of the container 20 and the support member 100 and the force detected by the sensor 300 can be controlled by adjusting the ratio of the first lever arm to the second lever arm.

[0043] For example, the weight of container 20 and support 100 is F1, the reaction force at sensor 300 is F2, the length of the first lever arm is L1, and the length of the second lever arm is L2. In this case, F1*L1=F2*L2, that is, F1 / F2=L2 / L1.

[0044] As one example, the length of the first lever arm can be configured to be greater than the length of the second lever arm, thereby amplifying the force detected by the sensor 300. Given a fixed accuracy of the sensor 300, amplifying the force detected by the sensor 300 can improve the detection accuracy.

[0045] Of course, when the weight of the container 20 and the support 100 is large and / or the consumption of cleaning agent per unit time is large, the length of the first lever arm can be configured to be smaller than the length of the second lever arm, so that the force detected by the sensor 300 is reduced.

[0046] Alternatively, the length of the first lever arm can be configured to be equal to the length of the second lever arm.

[0047] For ease of understanding, the following embodiments use the example of the force detected by sensor 300 being amplified.

[0048] As one example, 5*L2≤L1≤15*L2. That is, the length of the first lever arm is 5 to 15 times the length of the second lever arm, thus amplifying the weight of the container 20 and the support 100 by 5 to 15 times. Further, this multiplier can be 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, and 15 times, etc.

[0049] It should be noted that the lengths of the first lever arm and the second lever arm are not always equal to the lengths of the first rod 220 and the second rod 230. The relevant forces and lever arm lengths can be calculated based on the connection and positional relationship between the support 100 and the sensor 300, according to relevant principles of engineering mechanics; these will not be elaborated upon here.

[0050] As one example, the center of gravity of container 20 and support 100 can coincide with the free end of the first rod 220 in order to calculate the aforementioned related forces and related lever arms.

[0051] Please continue reading. Figure 3 In one embodiment, the direction of force transmission can also be adjusted by adjusting the extension directions of the first rod 220 and the second rod 230. The extension direction of the first rod 220 may intersect with the extension direction of the second rod 230. For example, by configuring the angle between the extension directions of the first rod 220 and the second rod 230, the force applied longitudinally to the first rod 220 by the container 20 and the support member 100 can be converted into a force that abuts against the sensor 300 laterally, so that the sensor 300 can be arranged to the side of the second rod 230 for easy installation and fixation.

[0052] In one embodiment, the extension direction of the first rod 220 may be perpendicular to the extension direction of the second rod 230. Of course, in other embodiments, the angle between the extension directions of the first rod 220 and the second rod 230 may be configured to other values.

[0053] Please continue reading. Figure 3 In one embodiment, the fulcrum 210 can be configured as a socket, and the fixing structure has a pivot that is inserted into the socket, thereby rotatably connecting the connector 200 to the fixing structure. Alternatively, the fulcrum 210 can be configured as a pivot, and the fixing structure has a socket that is inserted into the socket, thereby rotatably connecting the connector 200 to the fixing structure.

[0054] Please see Figure 4 In one embodiment, the balance monitoring device 10 further includes a base 400, which is disposed on a fixed structure, and a connector 200 may be disposed on the base 400. The connector 200 is configured as a spring, and the sensor 300 detects the deformation of the connector 200 to obtain the weight change of the container 20 to be monitored. This configuration allows for adaptive adjustment of the spring's stiffness coefficient to adjust the correspondence between the weight change of the cleaning agent in the container 20 and the deformation of the connector 200. Thus, without changing the sensor 300, the balance monitoring device 10 can be compatible with containers 20 of different volume specifications. Furthermore, the connector 200, acting as a spring connecting the base 400 and the support 100, possesses certain vibration damping and anti-interference properties, reducing the impact of external interference on the accuracy of balance monitoring. In this embodiment, the sensor 300 can be configured as a displacement sensor, i.e., a distance measuring sensor.

[0055] Furthermore, since the connector 200 connects the base 400 and the support 100, the sensor 300 can obtain the length of the connector 200 by measuring the distance between the base 400 and the support 100. The sensor 300 measures the distance between the base 400 and the support 100 at preset time intervals to obtain the deformation of the spring within the preset time interval, thereby calculating the consumption of cleaning agent in the container 20 and achieving real-time monitoring of the remaining cleaning agent level.

[0056] In one embodiment, the two ends of the connector 200 abut against the support 100 and the base 400, respectively. There can be multiple connectors 200, with at least two connectors 200 arranged side by side and evenly spaced between the support 100 and the base 400 to jointly support the support 100 and the container 20.

[0057] Furthermore, when the connector 200 acts as a spring, its length direction can be parallel to the direction of gravity to support it between the support 100 and the base 400.

[0058] It should be noted that in some embodiments, the balance monitoring device 10 may not have a base 400. In this case, the spring, which serves as the connector 200, can directly abut against the support 100 and the fixed structure. In this case, the sensor 300 can be located on the fixed structure.

[0059] In one embodiment, multiple connectors 200 are arranged in an array, and a sensor 300 is located at the geometric center of the array of connectors 200, so that the displacement changes detected by the sensor 300 can accurately reflect the amount of cleaning agent consumed in the container 20.

[0060] In one embodiment, there are two connectors 200, and the sensor 300 is located at the midpoint of the line connecting the two connectors 200, so that the displacement change detected by the sensor 300 can accurately reflect the amount of cleaning agent consumed in the container 20.

[0061] In one embodiment, the connector 200 is detachably configured. This allows for the selection of a suitable connector 200 based on the specifications of the container 20. This eliminates the need for multiple sets of sensors 300 with varying accuracies and detection ranges, thus reducing costs. Furthermore, using the same sensor 300 ensures compatibility with containers 20 of different sizes, improving the versatility of the balance monitoring device 10.

[0062] As one example, when the connector 200 is used as a lever, it can be detachably connected to the fixed structure. Therefore, by disassembling and replacing the connector 200, the length relationship between the first and second lever arms can be adjusted, thereby adjusting the scaling ratio of the relevant force.

[0063] As one example, when connector 200 is configured as a spring, connector 200 can be detachably connected to base 400. Thus, connector 200 can be disassembled and replaced to adapt its stiffness coefficient to the specifications of container 20.

[0064] Please see Figure 5 In one embodiment, the sensor 300 can also directly support the bottom of the component 100 to directly detect the weight of the container 20, facilitating real-time monitoring of the cleaning agent inside the container 20.

[0065] In one embodiment, the support member 100 has a receiving groove 110 for engaging with the container 20 to improve the positional stability of the container 20.

[0066] One embodiment of this application also provides a medical device, which includes a residual monitoring device 10 as described in various embodiments, capable of real-time monitoring of the residual amount of cleaning agent in the container 20. The medical device may include a fixing structure as described in various embodiments. Alternatively, the fixing structure may also be configured as a desktop or tabletop.

[0067] In one embodiment, the medical device includes a processor and a suction device. The processor is electrically connected to a level monitoring device 10 to acquire data collected by the level monitoring device 10. The suction device is used to suction liquid from the container 20 and deliver it to a designated location. The processor can record changes in the cleaning agent and calculate the consumption rate of the cleaning agent, estimating the approximate time when the cleaning agent in the container 20 will be depleted. Therefore, based on the anticipated test tasks, the operator can be prompted to replenish the cleaning agent in advance. Furthermore, based on the test workload, the cleaning agent consumption can be estimated, and combined with the monitored cleaning agent consumption, the proper functioning of the cleaning agent suction device (peristaltic pump, syringe, metering pump, etc.) can be determined.

[0068] Medical devices can be, but are not limited to, in vitro diagnostic (IVD) devices. As one example, a medical device can be a fully automated IVD device, such as a fully automated biochemical analyzer or a fully automated chemiluminescence immunoassay analyzer. Automated IVD devices can automatically dilute the cleaning agent online. It can be understood that online automatic dilution refers to the automated IVD device drawing up the cleaning agent concentrate and diluent (pure water or deionized water), and diluting them according to a specific dilution ratio to meet usage requirements. In other words, the automated IVD device consumes not only the cleaning agent concentrate but also the diluent. The remaining balance monitoring device 10 can be used not only to monitor the consumption of the cleaning agent concentrate but also the consumption of the diluent, as well as the consumption of the diluted cleaning solution.

[0069] By using the residual monitoring device 10 to monitor the fluid residual in the corresponding container 20, the dilution ratio can be calculated and recorded in the equipment log for easy feedback and adjustment.

[0070] In one embodiment, when the medical device is used as an automated in vitro diagnostic device, it may further include infusion devices, one of which is used to infuse the concentrate cleaning agent into the concentrate container 20, and the other is used to infuse a diluent (e.g., pure water or deionized water) into the diluent container 20. The medical device can monitor the liquid levels in the concentrate container 20 and the diluent container 20 via the balance monitoring device 10. The processor can control the corresponding infusion device to start infusion based on the liquid levels in the corresponding containers 20, and control the corresponding infusion device to stop infusion when the containers are full.

[0071] It should be noted that the cleaning agent concentrate and / or deionized water injected by the infusion device can be provided by an external storage structure, or the storage structure can be built into the medical device.

[0072] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0073] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A residual capacity monitoring device, characterized in that, The margin monitoring device is used to install on a fixed structure, and the margin monitoring device includes: A support member, the support member being used to support a container of the medium to be monitored; A connector, which is movably disposed on the fixed structure and connected to the support member; A sensor that detects the load at the support member via the connector to obtain the weight of the container containing the medium to be monitored.

2. The residual monitoring device according to claim 1, characterized in that, The connector rotates with the fixed structure to form a lever. One end of the connector is connected to the support, and the other end abuts against the sensor.

3. The residual monitoring device according to claim 2, characterized in that, The connector includes a fulcrum portion, which is rotatably engaged with the fixed structure. At the fulcrum, the lever arm of the weight of the support member and the container of the medium to be monitored is the first lever arm, and the lever arm of the counterforce provided by the sensor to the connector is the second lever arm. The length of the first lever arm is greater than the length of the second lever arm.

4. The balance monitoring device according to claim 3, characterized in that, The length of the first lever arm is L1, and the length of the second lever arm is L2, where 5*L2≤L1≤15*L2.

5. The balance monitoring device according to claim 2, characterized in that, The connector includes a fulcrum portion and a first rod and a second rod connected to opposite sides of the fulcrum portion. The fulcrum portion is rotatably engaged with the fixed structure. The first rod is connected to the support member, and the second rod abuts against the sensor. The extension direction of the first rod intersects the extension direction of the second rod.

6. The balance monitoring device according to claim 1, characterized in that, The connector is configured as a spring, and the sensor detects the amount of deformation of the connector to obtain the amount of weight change of the container of the medium to be monitored.

7. The remaining capacity monitoring device according to claim 6, characterized in that, The remaining capacity monitoring device also includes a base, and the two ends of the connector abut against the support and the base respectively, and at least two connectors are located side by side and evenly spaced between the support and the base.

8. The remaining capacity monitoring device according to claim 7, characterized in that, The plurality of connectors are arranged in an array, and the sensor is located at the geometric center of the array of connectors; or The number of connectors is two, and the sensor is located at the midpoint of the line connecting the two connectors.

9. The balance monitoring device according to any one of claims 1 to 8, characterized in that, The connector is detachably mounted.

10. A medical device, characterized in that, The medical device includes the balance monitoring device as described in any one of claims 1 to 9.

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