Infusion bottle liquid medicine monitoring device, monitoring method and system

Abstract

The invention relates to the technical field of infusion monitoring, in particular to an infusion bottle liquid medicine monitoring device, monitoring method and system.The monitoring device is installed on an infusion bottle and comprises a fixing part, a guiding part and a detector; the fixing part is detachably connected with the infusion bottle, the guiding part is connected with the fixing part, and the detector is arranged on the guiding part in a sliding mode and can stop at any position of the guiding part; the shape of the guide part is matched with that of the outer wall of the infusion bottle; the detector is used for detecting the residual medicine amount in the infusion bottle. According to the infusion bottle monitoring device, by arranging the guide part attached to the outer wall of the infusion bottle in shape, on one hand, the occupied space of the monitoring device can be reduced, and on the other hand, for the liquid level, close to the bottle opening, of the infusion bottle without scales, a user can achieve corresponding monitoring by adjusting the position of the detector by himself / herself. According to the technical scheme, whole-process automatic calculation is achieved in the monitoring process, user operation is easy, and use is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of infusion monitoring, and in particular to an infusion bottle liquid monitoring device, a monitoring method and a system. Background Art

[0002] In hospitals and daily life, in order to meet the needs of treatment or health care, it is common to perform infusion. Due to the long infusion time, the infusion bottle on the hook must be constantly monitored by the patient or nurse to monitor the liquid level in the bottle. If the liquid is not replaced or handled in time after the infusion, medical accidents will occur, especially at night, which is more difficult. Therefore, it is necessary to solve a monitoring method for when the liquid level in the infusion bottle drops to the positioning point, so that when the liquid level drops to the positioning point at the bottom of the bottle, the patient and medical staff can be notified immediately to take measures.

[0003] The existing test method for detecting the liquid level in an infusion bottle in a hospital is to hang a spring scale on the infusion bottle, and use the fact that the liquid level in the bottle drops and the weight becomes lighter during infusion to determine the liquid level position. Since the specific gravity of the liquid medicine and the weight of the bottle vary greatly, the measured error is also large. In addition, the sizes of infusion bottles are different now, so it is necessary to determine the test data, the calculation is cumbersome, the reliability is low, and the practicality is poor. Summary of the invention

[0004] The object of the present invention is to provide an infusion bottle liquid monitoring device, a monitoring method and a system to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An infusion bottle liquid monitoring device, mounted on the infusion bottle, comprises: a fixing part, a guide part, and a detector;

[0007] The fixing part is detachably connected to the infusion bottle, the guide part is connected to the fixing part, the detector is slidably arranged on the guide part, and can stop at any position of the guide part; the shape of the guide part is adapted to the shape of the outer wall of the infusion bottle;

[0008] The detector is used to detect the remaining amount of medicine in the infusion bottle.

[0009] Furthermore, the fixing portion includes: an annular ring with a notch, a connecting ear is provided at the notch, a locking piece is provided on the connecting ear, and the locking piece is used to lock the connecting ear, thereby making the annular ring embrace the side wall of the infusion bottle to fix the annular ring to the infusion bottle.

[0010] Furthermore, a rubber layer is attached to the inner wall of the annular ring, and the outer wall of the annular ring is an elastic steel sheet.

[0011] Furthermore, the guide portion is fixedly connected to the fixing portion; the guide portion extends along the outer side wall of the infusion bottle toward the bottle mouth; and the shape of the guide portion is adjustable.

[0012] Further, the detector includes: a sensor, a sliding part;

[0013] The sliding part is slidably matched with the guiding part, the sliding part is sleeved on the outside of the guiding part, a first protrusion is arranged on the inner wall of the sliding part, and an anti-slip protrusion is arranged on the outer wall of the guiding part, the first protrusion and the anti-slip protrusion are both made of rubber, and are used to increase the sliding friction between the sliding part and the guiding part; the sensor is an optical sensor.

[0014] Furthermore, it also includes: a controller and a remote client; the controller is connected to the sensor to receive the detection result of the sensor, and the controller is connected to the remote client to transmit the detection result to the remote client.

[0015] A method for monitoring liquid medicine in an infusion bottle, comprising:

[0016] After the fixing part is connected and fixed to the infusion bottle, a predetermined position of the detector is set; wherein the predetermined position is the lowest value position of the liquid level of the medicine in the infusion bottle;

[0017] Adjust the shape of the guide portion to match the shape of the outer wall of the infusion bottle;

[0018] Sliding the detector to a predetermined position;

[0019] The detector is powered on and works, and detects the liquid level in the infusion bottle using a predetermined algorithm, and transmits the monitoring result to the controller, and the controller transmits the detection result to the remote client.

[0020] Furthermore, the predetermined algorithm includes:

[0021] Building a model based on experimental data, wherein the experimental data is the refractive index detected by the optical sensor when there are different liquid levels in the infusion bottle;

[0022] The determined model is input into the controller, and the detection data of the optical sensor is calculated in real time to obtain the current liquid level;

[0023] The controller transmits the current liquid level to the remote client.

[0024] Furthermore, the model includes: a linear model and an exponential decay model;

[0025] The calculation formula of the linear model is:

[0026] I=m\cdot L+b

[0027] Where, I is the light intensity (or its attenuation value); L is the liquid level; m and b are regression constants;

[0028] The calculation formula of the exponential decay model is:

[0029] I=I_0e^{-kL}

[0030] Where I_0 is the initial light intensity; k is the decay constant; L is the liquid level;

[0031] By fitting the actual measured data, we can get k

[0032] and I_0, the liquid level L can be calculated based on the real-time measured light intensity I.

[0033] An infusion bottle liquid monitoring system, comprising:

[0034] Processor; and

[0035] A memory, configured to store executable instructions of the processor;

[0036] Wherein, the processor is configured to execute the above-mentioned infusion bottle liquid monitoring method by executing the executable instructions.

[0037] Compared with the prior art, the beneficial effects of the present invention are as follows: the present application provides an infusion bottle liquid monitoring device, which is installed on the infusion bottle, and includes: a fixing part, a guide part, and a detector; the fixing part is detachably connected to the infusion bottle, the guide part is connected to the fixing part, and the detector is slidably arranged on the guide part, and can stop at any position of the guide part; the shape of the guide part is adapted to the shape of the outer wall of the infusion bottle; the detector is used to detect the remaining amount of medicine in the infusion bottle. By providing a guide part that fits the shape of the outer wall of the infusion bottle, on the one hand, the space occupied by the monitoring device can be reduced, and on the other hand, for the liquid level near the bottle mouth of the infusion bottle without a scale, the user can adjust the position of the detector by himself to achieve corresponding monitoring. The technical solution of the present application is fully automated in the monitoring process, and the user operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 The present invention is a structural schematic diagram of an embodiment of a device for monitoring liquid in an infusion bottle.

[0039] Figure 2 The figure is a schematic diagram of the installation structure of an infusion bottle liquid monitoring device.

[0040] Figure 3The present invention is a schematic diagram of another installation structure of an infusion bottle liquid monitoring device.

[0041] Figure 4 It is a schematic diagram of the composition of the infusion bottle liquid monitoring system in the exemplary embodiment of the present disclosure.

[0042] Figure 5 The following is a schematic diagram schematically showing the composition of a storage medium in an exemplary embodiment of the present disclosure.

[0043] In the figure: 1. infusion bottle, 2. annular ring, 3. connecting ear, 4. locking piece, 5. rubber layer, 6. guide part, and 7. detector. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0046] See also Figure 1-Figure 3 In an embodiment of the present invention, a drug liquid monitoring device for an infusion bottle 1 is installed on the infusion bottle 1, and includes: a fixing portion, a guide portion 6, and a detector 7; the fixing portion is detachably connected to the infusion bottle 1, the guide portion 6 is connected to the fixing portion, the detector 7 is slidably arranged on the guide portion 6, and can stop at any position of the guide portion 6; the shape of the guide portion 6 is adapted to the shape of the outer wall of the infusion bottle 1; the detector 7 is used to detect the remaining amount of medicine in the infusion bottle 1.

[0047] In this embodiment, the detector 7 can be any one of a pressure sensor, an optical liquid level sensor, an ultrasonic liquid level sensor, or other sensors or devices that can monitor the liquid level, which is not limited in this application. The guide portion 6 is provided for the purpose of facilitating the installation of the detector 7 and adjusting the position of the detector 7. It can be understood that the purpose of adjusting the detector 7 is to change the detection position of the detector 7, so as to monitor the liquid level at different positions of the infusion bottle 1.

[0048] In this embodiment, the above-mentioned fixing part can be an annular clamp or an elastic restraint belt. Specifically in the present application, the above-mentioned fixing part is used to connect with the infusion bottle 1, and then the guide part 6 connected with the fixing part is restricted to one side of the infusion bottle 1, and is arranged into a detachable connection structure, which is more convenient for users to use. That is, when in use, the guide part 6 is installed on the side of the infusion bottle 1 using the fixing part. When use is completed, the fixing part can be separated from the infusion bottle 1. The operation is simple and easy to use.

[0049] In this embodiment, the guide portion 6 can be made of a metal material with deformation retention. In this way, the user can adjust the shape of the guide portion 6 according to the actual shape of the infusion bottle 1, so that the guide portion 6 is more closely aligned with the shape of the infusion bottle 1. In this way, the distance between the detector 7 provided on the guide portion 6 and the infusion bottle 1 can be made smaller, thereby avoiding the influence of the external environment on the detection result of the detector 7, thereby improving the detection accuracy.

[0050] In a specific embodiment, the fixing portion includes: an annular ring 2 with a notch, a connecting ear 3 is arranged at the notch, and a locking member 4 is arranged on the connecting ear 3, and the locking member 4 is used to lock the connecting ear 3, so that the annular ring 2 is surrounded by the side wall of the infusion bottle 1, so as to fix the annular ring 2 to the infusion bottle 1.

[0051] In this embodiment, in order to improve the connection stability between the annular ring 2 and the infusion bottle 1, a rubber layer 5 is attached to the inner wall of the annular ring 2 to increase the friction between the annular ring 2 and the infusion bottle 1; the outer wall of the annular ring 2 is an elastic steel sheet. With such a configuration, on the one hand, the fixing part has elasticity and can adapt to infusion bottles 1 of different shapes. The annular ring 2 can be locked by the locking member 4 to fix the annular ring 2 to the infusion bottle 1. The locking member 4 can be a bolt. For example, a threaded hole is provided on the connecting ear 3, and the bolt is threadedly connected to the threaded hole. In this way, by cooperating with the bolt and the thread, the two connecting ears 3 can be released or locked by turning the bolt. When released, the annular ring 2 can be separated from the infusion bottle 1. When tightened, the annular ring 2 can be fixed to the infusion bottle 1. The operation is simple and convenient.

[0052] In a specific embodiment, the guide portion 6 is fixedly connected to the fixing portion; the guide portion 6 extends along the outer wall of the infusion bottle 1 toward the bottle mouth; and the shape of the guide portion 6 is adjustable.

[0053] In this embodiment, a plastic metal material can be used, that is, the shape of the guide portion 6 can be manually adjusted to make it more closely fit the shape of the infusion bottle 1. In this way, the distance between the detector 7 provided on the guide portion 6 and the infusion bottle 1 can be made smaller, thereby avoiding the influence of the external environment on the detection result of the detector 7, thereby improving the detection accuracy.

[0054] In a specific embodiment, the detector 7 includes: a sensor, a sliding part; the sliding part is slidably matched with the guide part 6, the sliding part is sleeved on the outside of the guide part 6, a first protrusion is provided on the inner wall of the sliding part, and an anti-slip protrusion is provided on the outer wall of the guide part 6, the first protrusion and the anti-slip protrusion are both made of rubber, which is used to increase the sliding friction between the sliding part and the guide part 6; the sensor is an optical sensor.

[0055] In this embodiment, in order to ensure that the sensor can stay at any position on the guide portion 6, a rubber protrusion can be provided to increase the friction between the sliding portion and the guide portion 6. The user can manually apply force to the sliding portion to move the position of the sliding portion on the guide portion 6. When no force is applied to the sliding portion, the sliding portion can hover on the guide portion 6 under the contact between the first protrusion and the anti-slip protrusion. In this way, after the user adjusts the sliding portion to a predetermined position, the sliding portion can stay at that position, thereby allowing the detector 7 to stay at a predetermined position.

[0056] In a specific implementation, it further includes: a controller and a remote client; the controller is connected to the sensor to receive the detection result of the sensor, and the controller is connected to the remote client to transmit the detection result to the remote client.

[0057] In this embodiment, the remote client can be a smart phone, a laptop, a desktop computer at the nurse station, etc., and this application does not limit it. In this embodiment, the Internet of Things (IoT) technology can be combined. The modern intelligent infusion monitoring system can upload real-time data to the cloud or mobile devices through wireless sensors to achieve remote monitoring. By integrating with the hospital information system H IS or the nurse call system, nursing staff can obtain the remaining infusion data at the first time and adjust the infusion plan in time.

[0058] A method for monitoring liquid in an infusion bottle 1 comprises the following steps:

[0059] Step 1: After the fixing part is connected and fixed to the infusion bottle 1, a predetermined position of the detector 7 is set; wherein the predetermined position is the lowest value position of the liquid level of the medicine in the infusion bottle 1;

[0060] Step 2: Adjust the shape of the guide portion 6 to match the shape of the outer wall of the infusion bottle 1;

[0061] Step 3, sliding the detector 7 to a predetermined position;

[0062] Step 4: The detector 7 is powered on and starts working, and uses a predetermined algorithm to detect the liquid level in the infusion bottle 1, and transmits the monitoring result to the controller, and the controller transmits the detection result to the remote client.

[0063] In a specific implementation, the predetermined algorithm includes:

[0064] Building a model based on experimental data, wherein the experimental data is the refractive index detected by the optical sensor when there are different liquid levels in the infusion bottle 1;

[0065] The determined model is input into the controller, and the detection data of the optical sensor is calculated in real time to obtain the current liquid level;

[0066] The controller transmits the current liquid level to the remote client.

[0067] Transmissive optical liquid level sensors place light sources and light detectors on both sides of the liquid level and measure the intensity change of light passing through the liquid medium to determine the liquid level. When the height of the liquid changes, the transmission characteristics of the liquid will also change, causing the detected light intensity to change. The relationship between the intensity of the transmitted light and the liquid level is usually nonlinear and is affected by factors such as absorption and refraction of the liquid.

[0068] The basic principle of a transmissive liquid level sensor is that the light source and photodetector are located on both sides of the liquid container, and the light emitted by the light source passes through the liquid and is received by the detector. The height, transparency, density, refractive index and other factors of the liquid will affect the intensity of light transmission.

[0069] Relationship between liquid level change and light intensity:

[0070] When the liquid level is higher, the thickness of the liquid is greater and the transmitted intensity of light will be lower.

[0071] When the liquid level is low, the thickness of the liquid decreases and the intensity of the transmitted light increases.

[0072] If the transparency and absorbance of the liquid are higher, the effect of the liquid level on light will be more significant.

[0073] Relationship between transmitted light intensity and liquid level height:

[0074] Assuming that the transmission characteristics of the liquid are related to the liquid level, the light intensity I transmitted through the liquid can be expressed as a function of the liquid level L. For an ideal transmission process, assuming that the absorption and scattering of the liquid remain unchanged, the relationship between the light transmission intensity I and the liquid level L usually presents an exponential decay form, or follows a certain linear pattern.

[0075] The calculation formula of the linear model is:

[0076] I=m\cdot L+b

[0077] Where, I is the light intensity or its attenuation value; L is the liquid level; m and b are regression constants;

[0078] More commonly, when light passes through a liquid, it is absorbed by the liquid, causing the intensity of the transmitted light to decay exponentially as the liquid level increases. Assuming the liquid absorption coefficient is \alpha, the relationship between the transmitted light intensity I and the liquid level height L can be expressed as:

[0079] The calculation formula of the exponential decay model is:

[0080] I=I_0e^{-kL}

[0081] Where I_0 is the initial light intensity; k is the decay constant; L is the liquid level;

[0082] By fitting the actual measured data to obtain the values ​​of k and I_0, the liquid level L can be calculated based on the real-time measured light intensity I.

[0083] As the liquid level L increases, the transmitted light intensity I will decrease exponentially.

[0084] Refer to the following Figure 4 The drug liquid monitoring system 400 for the infusion bottle 1 according to this embodiment of the present invention will be described. Figure 4 The monitoring system 400 shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention.

[0085] like Figure 4 As shown, the monitoring system 400 is in the form of a general-purpose computing device. The components of the monitoring system 400 may include but are not limited to: at least one processing unit 410 , at least one storage unit 420 , and a bus 430 connecting different system components including the storage unit 420 and the processing unit 410 .

[0086] The storage unit stores a program code, and the program code can be executed by the processing unit 410, so that the processing unit 410 executes the steps according to various exemplary embodiments of the present invention described in the above "Exemplary Method" section of this specification. For example, the processing unit 210 can execute 4 steps: Step 1, after the fixing part is connected and fixed to the infusion bottle 1, the predetermined position of the detector 7 is set; wherein the predetermined position is the lowest value position of the liquid level of the liquid in the infusion bottle 1; Step 2, the shape of the guide part 6 is adjusted to match the shape of the outer wall of the infusion bottle 1; Step 3, the detector 7 is slid to the predetermined position; Step 4, the detector 7 is powered on, and the liquid level in the infusion bottle 1 is detected using a predetermined algorithm, and the monitoring result is transmitted to the controller, and the controller transmits the detection result to the remote client.

[0087] The storage unit 420 may include a readable medium in the form of a volatile storage unit, such as a random access storage unit RAM 4201 and / or a cache storage unit 4202 , and may further include a read-only storage unit ROM 4203 .

[0088] The storage unit 420 may also include a program / utility 4204 having a set of at least one program module 4205, such program modules 4205 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0089] Bus 430 may represent one or more of several types of bus structures, including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.

[0090] The monitoring system 400 may also communicate with one or more external devices 300, such as keyboards, pointing devices, Bluetooth devices, etc., and may also communicate with one or more devices that enable a user to interact with the monitoring system 400, and / or any device that enables the monitoring system 400 to communicate with one or more other computing devices, such as routers, modems, etc. Such communication may be performed via an input / output I / O interface 450. In addition, the monitoring system 400 may also communicate with one or more networks, such as a local area network LAN, a wide area network WAN, and / or a public network, such as the Internet, via a network adapter 460. As shown, the network adapter 460 communicates with other modules of the monitoring system 400 via a bus 430. It should be understood that, although not shown in the figure, other hardware and / or software modules may be used in conjunction with the monitoring system 400, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0091] Through the description of the above implementation, it is easy for those skilled in the art to understand that the example implementation described here can be implemented by software, or by software combined with necessary hardware. Therefore, the technical solution according to the implementation of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium such as a CD-ROM, a USB flash drive, a mobile hard disk, etc. or on a network, and includes several instructions so that a computing device such as a personal computer, a monitoring system, a terminal device, or a network device can execute the method according to the implementation of the present disclosure.

[0092] In an exemplary embodiment of the present disclosure, a computer-readable storage medium is also provided, on which a program product capable of implementing the above method of the present specification is stored. In some possible implementations, various aspects of the present invention can also be implemented in the form of a program product, which includes a program code, and when the program product is run on a terminal device, the program code is used to enable the terminal device to execute the steps according to various exemplary embodiments of the present invention described in the above "Exemplary Method" section of the present specification.

[0093] refer to Figure 5 As shown, a program product 500 for implementing the above method according to an embodiment of the present invention is described, which can be a portable compact disk read-only memory CD-ROM) and includes program code, and can be run on a terminal device, such as a personal computer. However, the program product of the present invention is not limited thereto. In this document, a readable storage medium can be any tangible medium containing or storing a program, which can be used by or in combination with an instruction execution system, an apparatus or a device.

[0094] The program product may use any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. A more specific non-exhaustive list of readable storage media includes: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory RAM, a read-only memory ROM, an erasable programmable read-only memory EPROM or flash memory, an optical fiber, a portable compact disk read-only memory CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0095] Computer readable signal media may include data signals propagated in baseband or as part of a carrier wave, in which readable program code is carried. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Readable signal media may also be any readable medium other than a readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0096] The program code embodied on the readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wired, optical cable, RF, etc., or any suitable combination of the foregoing.

[0097] Program code for performing the operations of the present invention may be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java, C++, etc., and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as a separate software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or monitoring system. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any type of network, including a local area network LAN or a wide area network WAN, or may be connected to an external computing device, such as through the Internet using an Internet service provider.

[0098] In addition, the above-mentioned figures are only schematic illustrations of the processes included in the method according to an exemplary embodiment of the present invention, and are not intended to be limiting. It is easy to understand that the processes shown in the above-mentioned figures do not indicate or limit the time sequence of these processes. In addition, it is also easy to understand that these processes can be performed synchronously or asynchronously, for example, in multiple modules.

[0099] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary technical means in the art that are not disclosed in the present disclosure. The specification and examples are to be considered as exemplary only, and the true scope and spirit of the present disclosure are indicated by the claims.

[0100] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

[0101] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0102] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A drug solution monitoring device for an infusion bottle, mounted on an infusion bottle (1), characterized in that: include: A fixing part, a guide part (6), and a detector (7); The fixing portion is detachably connected to the infusion bottle (1), the guide portion (6) is connected to the fixing portion, the detector (7) is slidably arranged on the guide portion (6), and can stop at any position of the guide portion (6); the shape of the guide portion (6) is adapted to the shape of the outer wall of the infusion bottle (1); The detector (7) is used to detect the remaining amount of medicine in the infusion bottle (1).

2. The infusion bottle liquid monitoring device according to claim 1, characterized in that: The fixing portion comprises: an annular ring (2) having a notch, a connecting ear (3) being arranged at the notch, a locking member (4) being arranged on the connecting ear (3), and the locking member (4) being used to lock the connecting ear (3), thereby enabling the annular ring (2) to embrace the side wall of the infusion bottle (1), so as to fix the annular ring (2) to the infusion bottle (1).

3. The infusion bottle liquid monitoring device according to claim 2, characterized in that: The inner wall of the annular ring (2) is attached with a rubber layer (5), and the outer wall of the annular ring (2) is an elastic steel sheet.

4. The infusion bottle liquid monitoring device according to claim 1, characterized in that: The guide portion (6) is fixedly connected to the fixing portion; the guide portion (6) extends along the outer wall of the infusion bottle (1) toward the bottle mouth; and the shape of the guide portion (6) is adjustable.

5. The infusion bottle liquid monitoring device according to claim 1, characterized in that: The detector (7) comprises: a sensor and a sliding part; The sliding part is slidably matched with the guiding part (6), the sliding part is sleeved on the outer side of the guiding part (6), a first protrusion is arranged on the inner wall of the sliding part, and an anti-slip protrusion is arranged on the outer wall of the guiding part (6), the first protrusion and the anti-slip protrusion are both made of rubber and are used to increase the sliding friction between the sliding part and the guiding part (6); the sensor is an optical sensor.

6. The infusion bottle liquid monitoring device according to claim 5, characterized in that: Also includes: Controller, remote client; The controller is connected to the sensor for receiving the detection result of the sensor, and the controller is connected to the remote client for transmitting the detection result to the remote client.

7. A method for monitoring liquid in an infusion bottle, characterized in that: include: After the fixing portion is connected and fixed to the infusion bottle (1), a predetermined position of the detector (7) is set; wherein the predetermined position is the lowest value position of the liquid level of the medicine in the infusion bottle (1); Adjusting the shape of the guide portion (6) so that it matches the shape of the outer wall of the infusion bottle (1); Sliding the detector (7) to slide the detector (7) to a predetermined position; The detector (7) is powered on and operates to detect the liquid level in the infusion bottle (1) using a predetermined algorithm, and transmits the monitoring result to the controller, which transmits the detection result to the remote client.

8. The method for monitoring liquid in an infusion bottle according to claim 7, characterized in that: The predetermined algorithm includes: Building a model based on experimental data, wherein the experimental data is the refractive index detected by the optical sensor when there are different liquid levels in the infusion bottle (1); The determined model is input into the controller, and the detection data of the optical sensor is calculated in real time to obtain the current liquid level; The controller transmits the current liquid level to the remote client.

9. The method for monitoring liquid in an infusion bottle according to claim 8, characterized in that: The models include: linear model and exponential decay model; The calculation formula of the linear model is: I=m\cdot L+b Where, I is the light intensity (or its attenuation value); L is the liquid level; m and b are regression constants; The calculation formula of the exponential decay model is: I=I_0e^{-kL} Where I_0 is the initial light intensity; k is the decay constant; L is the liquid level; By fitting the actual measured data, we can get the values ​​of k and I_0), and then calculate the liquid level L according to the real-time measured light intensity I.

10. An infusion bottle liquid monitoring system, characterized in that: include: processor; as well as A memory, configured to store executable instructions of the processor; Wherein, the processor is configured to execute the infusion bottle liquid monitoring method described in claims 6-9 by executing the executable instructions.

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