Infusion dose measurement system and method for an insulin pump

Abstract

This invention discloses an insulin pump infusion dose measurement system and method. The infusion dose measurement system includes: a weighing device including a weighing area; a test container placed in the weighing area, the test container having a first receiving cavity for containing the target liquid infused by the insulin pump; and an anti-evaporation shield covering the outside of the test container. This measurement system isolates the test container from the outside by setting an anti-evaporation shield around it, thus isolating the target liquid infused into the test container by the insulin pump from the outside environment. This significantly reduces liquid evaporation within the test container, making the measurement conditions more stable and improving the measurement accuracy of the target liquid dose infused by the insulin pump.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and in particular to an insulin pump infusion dose measurement system and method. Background Technology

[0002] Insulin pumps provide continuous subcutaneous insulin infusion for diabetic patients, allowing for 24-hour basal rate infusions and postprandial bolus infusions as needed. Compared to multi-needle injection regimens, this significantly reduces the number of injections, better adapts to individual patient needs, makes the administered insulin more physiological, and improves the quality of life for diabetic patients.

[0003] The accuracy of insulin injection dosage is a crucial performance indicator for insulin pumps; both insufficient and excessive infusion volumes can lead to serious safety incidents. Because each insulin pump injection is very small (minimum dose 0.025U), the accuracy and stability of the measurement platform are extremely important. Oscillations in the injection tubing and changes in the external environment can cause measurement deviations. This is especially true for basal rate measurement, which requires micro-volume, high-precision, and long-term (over 48 hours) measurements. Various uncertainties during measurement can lead to significant differences in results at different times. Therefore, accurately measuring the infusion dose of insulin pumps is a key focus for R&D personnel. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of low accuracy in measuring the infusion dose of insulin pumps in the prior art, and to provide an insulin pump infusion dose measurement system and method.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] An insulin pump infusion dose measurement system, comprising:

[0007] A weighing device, the weighing device including a weighing area;

[0008] The test container is placed in the weighing area and has a first receiving cavity for containing the target liquid infused by the insulin pump.

[0009] An anti-evaporation cover is provided on the outside of the container to be tested.

[0010] In this solution, the measurement system isolates the test container from the outside by setting an anti-evaporation shield on the outside of the test container, thus isolating the target liquid injected into the test container by the insulin pump from the outside environment. This greatly reduces the evaporation of the liquid in the test container, makes the measurement conditions more stable, and improves the measurement accuracy of the measurement system in measuring the dose of the target liquid infused by the insulin pump.

[0011] Preferably, the first receiving cavity contains a first liquid, and the infusion line outlet of the insulin pump is located below the liquid level of the first liquid.

[0012] In this design, if the first liquid is not pre-added to the test container, and the target liquid is dripped directly onto the bottom of the container, the droplet will exert an impact force, causing instability in the reading of the weighing device. The outlet of the insulin pump's infusion tubing is located below the surface of the first liquid and does not contact the inner wall of the test container, allowing the target liquid to enter the container smoothly and slowly without causing surface oscillation. The target liquid and the first liquid can be the same liquid or different liquids. Preferably, the target liquid and the first liquid are the same liquid to facilitate mutual dissolution. The first liquid can be insulin, water, or a saline solution.

[0013] Preferably, it also includes an anti-evaporation unit, which is disposed inside the anti-evaporation cover and located outside the container to be tested. The anti-evaporation unit has a second receiving cavity communicating with the first receiving cavity, and the second receiving cavity contains a second liquid.

[0014] In this design, since the second cavity of the anti-evaporation unit and the first cavity of the test container are interconnected, the anti-evaporation unit and the test container are located in the same space. If the second liquid in the anti-evaporation unit evaporates, it can maintain a certain humidity in the space shared by the anti-evaporation unit and the test container, thereby reducing the amount of liquid evaporating in the test container and achieving a relatively stable evaporation rate. Otherwise, the liquid in the test container evaporates very quickly, and the evaporation rate varies greatly with the ambient humidity. The first liquid and the second liquid can be the same liquid or different liquids. Preferably, the first liquid and the second liquid are the same liquid.

[0015] Preferably, the surface of the first liquid away from the weighing area is covered with an insulating layer.

[0016] In this design, the insulating layer separates the liquid from the outside air, reducing liquid evaporation and thus improving the accuracy of measuring insulin pump infusion dose. The insulating layer is typically made of silicone oil.

[0017] Preferably, the end of the infusion line of the insulin pump is connected to a capillary tube, and the outlet of the infusion line is located at the end of the capillary tube away from the infusion line.

[0018] In this design, the small aperture of the capillary tube allows the insulin pump to smoothly, steadily, and slowly inject the target liquid into the test container through the capillary tube. The delivery of the target liquid does not cause oscillations, ensuring stable readings on the weighing device. Preferably, the capillary tube is made of a rigid material, which facilitates fixing the infusion tubing and prevents changes in the weighing device readings even when the capillary tube is inserted below the liquid surface.

[0019] Preferably, the anti-evaporation shroud has a channel through which the capillary tube passes.

[0020] In this scheme, the above-mentioned structural design facilitates the passage of the capillary through the anti-evaporation shield, so that the insulin pump can inject the target liquid into the test container through the capillary.

[0021] Preferably, the anti-evaporation hood includes a main housing and a top cover covering the main housing. The main housing is placed in the non-weighing area of ​​the weighing device, and the top cover has the channel.

[0022] In this design, the aforementioned structural configuration prevents the anti-evaporation hood from contacting the weighing area, which could affect the weight of the weighing area and lead to inaccurate measurement results. Designing the anti-evaporation hood as a separate structure for the main shell and top cover facilitates the assembly of the measurement system and the addition of the first liquid to the container under test and the second liquid to the anti-evaporation unit.

[0023] Preferably, it also includes a data processing unit electrically connected to the weighing device for acquiring measurement data from the weighing device.

[0024] In this solution, the data from the weighing device can be continuously and in real time collected by the data processing unit, which facilitates long-term uninterrupted measurement and improves data collection efficiency.

[0025] Preferably, it also includes a temperature and humidity monitoring unit, which is used to monitor the temperature and / or humidity inside the anti-evaporation hood.

[0026] In this solution, the temperature and humidity monitoring unit can record the changes in temperature and / or humidity inside the anti-evaporation hood in real time. The measurement personnel can adjust the type and volume of liquid in the anti-evaporation unit according to the changes in temperature and humidity, so as to compensate for the liquid evaporating in the container under test.

[0027] A method for measuring the infusion dose of an insulin pump, wherein the method utilizes the insulin pump infusion dose measurement system described above, and the method includes:

[0028] When the insulin pump is not in an infusion state, the rate of weight change of the first liquid in the test container is obtained based on the measurement data measured by the weighing device at different times.

[0029] Based on the measurement data measured by the weighing device at the start of infusion and the measurement data measured by the weighing device at the end of infusion, the initial infusion dose of the insulin pump is obtained.

[0030] The actual infusion dose of the insulin pump is obtained based on the infusion duration, the rate of weight change, and the initial infusion dose.

[0031] In this scheme, since the insulin pump's infusion dose measurement system is equipped with an anti-evaporation hood, the evaporation rate of the liquid inside the anti-evaporation hood is constant. This evaporation rate can be obtained by measuring the weight change rate of the first liquid inside the weighing device through the measurement data measured by the weighing device at different times. The difference between the measurement data measured by the weighing device at the start of infusion and the measurement data measured by the weighing device at the end of infusion is used to obtain the initial infusion dose of the insulin pump. Then, the total change in liquid during the infusion time is calculated by multiplying the infusion time by the weight change rate. Finally, the initial infusion dose of the insulin pump is corrected using the total change, thereby obtaining a more accurate measurement result of the insulin pump's infusion dose, i.e., the actual infusion dose.

[0032] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0033] The positive and progressive effects of this invention are as follows: by setting an anti-evaporation cover on the outside of the test container, the test container is isolated from the outside, so that the target liquid injected into the test container by the insulin pump is also isolated from the outside, which greatly reduces the evaporation of the liquid in the test container, makes the measurement conditions more stable, and improves the measurement accuracy of the measurement system in measuring the dose of the target liquid infused by the insulin pump. Attached Figure Description

[0034] Figure 1 This is a schematic diagram (I) of the insulin pump infusion dose measurement system according to a preferred embodiment of the present invention.

[0035] Figure 2 This is a schematic diagram (a) of the internal structure of the anti-evaporation unit according to a preferred embodiment of the present invention.

[0036] Figure 3 for Figure 2 A schematic diagram of a local structure.

[0037] Figure 4 This is a schematic diagram (II) of the infusion dose measurement system of an insulin pump according to a preferred embodiment of the present invention.

[0038] Figure 5 A schematic diagram (II) of the internal structure of the anti-evaporation unit according to a preferred embodiment of the present invention.

[0039] Figure 6 A schematic diagram (III) of the infusion dose measurement system of the insulin pump according to a preferred embodiment of the present invention.

[0040] Figure 7 for Figure 6 A schematic diagram of the top cover.

[0041] Figure 8 This is a flowchart of an insulin pump infusion dose measurement method according to a preferred embodiment of the present invention.

[0042] Explanation of reference numerals in the attached figures:

[0043] Weighing device 1

[0044] Weighting area 11

[0045] Windproof cover 12

[0046] Container 2 to be tested

[0047] Anti-evaporation hood 3

[0048] Top cover 3a

[0049] Main casing 3b

[0050] Channel 31

[0051] First Liquid 4

[0052] Capillary 5

[0053] Infusion line 6

[0054] Infusion pipeline outlet 61

[0055] Anti-evaporation unit 7

[0056] Data processing unit 8

[0057] Insulin pump 9

[0058] Second liquid 10 Detailed Implementation

[0059] The present invention will be described more clearly and completely below by way of embodiments and in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiments described herein.

[0060] like Figures 1-7As shown, this embodiment discloses an insulin pump infusion dose measurement system, which includes a weighing device 1, a test container 2, and an anti-evaporation shield 3. The weighing device 1 includes a weighing area 11 and a non-weighing area, and the test container 2 is placed in the weighing area 11. The test container 2 has a first receiving cavity for containing the target liquid infused by the insulin pump 9. The target liquid can be insulin, water, or a saline solution. Water is usually used instead of insulin during measurement to save experimental costs. The anti-evaporation shield 3 is placed over the outside of the test container 2 to isolate it from the outside environment, thus isolating the target liquid infused into the test container 2 by the insulin pump 9 from the outside world. This significantly reduces the evaporation of the liquid in the test container 2, making the measurement conditions more stable and improving the accuracy of the measurement system in measuring the target liquid dose infused by the insulin pump 9.

[0061] In this embodiment, the weighing device 1 is an electronic balance, and the weighing area 11 is the pan of the balance. Of course, the weighing device 1 can also be other devices with weighing functions.

[0062] To prevent the weight of the target liquid from impacting the test container 2 during insulin pump 9 infusion, thus causing instability in the reading of the weighing device 1, a first liquid 4 is contained in the first receiving cavity of the test container 2. The first liquid 4 can be insulin, water, or a saline solution. The first liquid 4 and the target liquid can be the same liquid or different liquids. Preferably, the first liquid 4 and the target liquid are the same liquid, which facilitates mutual dissolution of the target liquid when it enters the first liquid 4 without causing liquid surface oscillation. If the first liquid 4 is not pre-added to the test container 2, and the target liquid drips directly onto the bottom of the test container 2, the droplet will have an impact force that causes instability in the reading of the weighing device 1. The infusion tubing outlet 61 of the insulin pump 9 is located below the liquid surface of the first liquid 4 and does not contact the inner wall of the test container 2, which facilitates the smooth and slow entry of the target liquid into the test container 2 without causing liquid surface oscillation.

[0063] To reduce liquid evaporation, an isolation layer is applied to the surface of the first liquid 4 away from the weighing area 11. This isolation layer isolates the liquid from the outside air, reducing evaporation and thus improving the accuracy of the infusion dose measurement. Typically, the isolation layer is made of silicone oil.

[0064] like Figures 1-5As shown, to prevent liquid evaporation and subsequent measurement errors, the infusion dosage measurement system also includes an anti-evaporation unit 7, which is located inside the anti-evaporation cover 3 and outside the test container 2. The anti-evaporation unit 7 has a second receiving cavity that communicates with the first receiving cavity. The first and second receiving cavities are connected through an upper opening, ensuring that the anti-evaporation unit 7 and the test container 2 are in the same space and have the same humidity. The second receiving cavity contains a second liquid 10, the level of which must not exceed the opening of the test container 2 to prevent it from entering. The second liquid 10 can be insulin, water, or a saline solution. Water is typically used instead of insulin during measurement to save on experimental costs. When the second liquid 10 in the anti-evaporation unit 7 evaporates, it maintains a certain humidity level within the space shared by the anti-evaporation unit 7 and the test container 2, reducing the amount of liquid evaporating from the test container 2 and achieving a relatively stable evaporation rate. Without the second liquid 10, the liquid in the test container 2 evaporates rapidly, and the evaporation rate varies greatly with ambient humidity. Of course, the first liquid 4 and the second liquid 10 can be the same liquid or different liquids. For example Figure 1 , Figure 2 and Figure 5 As shown, the anti-evaporation unit 7 is an annular evaporating dish with an open top. The annular evaporating dish has a through hole in the middle. The container to be tested 2 is placed in the weighing area 11 of the weighing device 1 through the through hole of the annular evaporating dish. The annular evaporating dish does not contact the container to be tested 2, so as to prevent the weight of the annular evaporating dish from being included in the weight of the container to be tested 2, thereby causing measurement error.

[0065] In this embodiment, as Figure 2 , Figure 3 and Figure 5 As shown, the end of the infusion line 6 of the insulin pump 9 is connected to a capillary tube 5, and the outlet 61 of the infusion line is located at the end of the capillary tube 5 away from the infusion line 6. Taking advantage of the small orifice of the capillary tube 5, the insulin pump 9 smoothly and slowly injects the target liquid into the test container 2 through the capillary tube 5. The delivery of the target liquid will not cause liquid surface oscillation, so that the reading of the weighing device 1 is stable.

[0066] like Figure 2 , Figure 3 , Figure 5 and Figure 7As shown, the anti-evaporation cover 3 has a channel 31 for the capillary tube 5 to pass through, facilitating the passage of the capillary tube 5 through the anti-evaporation cover 3 so that the insulin pump 9 can inject the target liquid into the test container 2 through the capillary tube 5. Specifically, the anti-evaporation cover 3 includes a main shell 3b and a top cover 3a covering the main shell 3b. The anti-evaporation cover 3 is configured with a separate structure for the main shell 3b and the top cover 3a, which facilitates the assembly of the measurement system and the addition of the first liquid 4 to the test container 2 and the addition of the second liquid 10 to the anti-evaporation unit 7. The main shell 3b is placed in the non-weighing area of ​​the weighing device 1 to prevent the anti-evaporation cover 3 from contacting the weighing area, thereby affecting the weight of the weighing area and causing inaccurate measurement results. Since the main shell 3b is placed in the non-weighing area of ​​the weighing device 1, and the top cover 3a has a channel 31 for the capillary tube 5 to be inserted and fixed to the top cover 3a, the weight of the capillary tube 5 will not be carried into the measurement results and will not affect the weighing measurement results of the weighing device 1. In this embodiment, the capillary tube 5 is made of a rigid material, which facilitates the fixation of the infusion line 6 and prevents changes in the reading of the weighing device 1 due to the insertion of the capillary tube 5 below the liquid surface of the first liquid 4.

[0067] In this embodiment, in order to simplify the structural setup, the main housing 3b of the anti-evaporation hood 3 is also reused as the housing of the anti-evaporation unit 7.

[0068] Based on this, such as Figure 1 , Figure 4 and Figure 6 As shown, the insulin pump infusion dose measurement system also includes a data processing unit 8, which is electrically connected to the weighing device 1 and is used to receive the measurement data from the weighing device 1, facilitating long-term, uninterrupted measurement. The data from the weighing device 1 can be continuously and in real-time acquired by the data processing unit 8, improving data acquisition efficiency. In this embodiment, the data processing unit 8 is a notebook computer. Of course, in other embodiments, the data processing unit 8 can also be a smart control board or a smart module.

[0069] In this embodiment, the insulin pump infusion dose measurement system also includes a temperature and humidity monitoring unit (not shown in the figure), which monitors the temperature and / or humidity inside the anti-evaporation shield 3. The temperature and humidity monitoring unit can record changes in temperature and / or humidity inside the anti-evaporation shield 3 in real time. The operator can adjust the type and volume of liquid in the anti-evaporation unit 7 according to the temperature and / or humidity changes, effectively compensating for the evaporation of the first liquid 4 in the test container 2. For example, when the insulin pump 9 is not infusion mode, by increasing or decreasing the amount of the second liquid 10 in the anti-evaporation unit 7, the rate of weight change of the weighing device 1 becomes zero, indicating that the internal balance of the measurement system has been achieved.

[0070] like Figure 1 , Figure 4 and Figure 6 As shown, in order to further control the measurement environment, a windproof cover 12 can be added to the outside of the weighing device 1 so that the measurement environment will not be affected by the operator's actions or external wind, thus avoiding the introduction of measurement errors.

[0071] like Figure 4 and Figure 5 As shown, the insulin pump 9 is a patch-type insulin pump, which can be placed directly above the anti-evaporation cover 3 so that the pump body under test can be placed inside the windproof cover 12 to avoid interference from the external environment and reduce measurement errors. The anti-evaporation unit 7 is arranged around the periphery of the test container 2. The second receiving cavity inside the anti-evaporation unit 7 contains a second liquid 10. The liquid level of the second liquid 10 cannot be higher than the mouth of the test container 2 to prevent the second liquid 10 from entering the test container 2. The first receiving cavity of the test container 2 and the second receiving cavity of the anti-evaporation unit 7 are connected through the upper opening, so that the anti-evaporation unit 7 and the test container 2 are in the same space and have the same humidity. The pump needle of the insulin pump 9 is connected to the capillary tube 5 to input the target liquid into the test container 2 below the liquid level of the first liquid 4. The weight of the test container 2 is continuously measured by the high-precision weighing device 1, and the measurement data is transmitted to the data processing unit 8 to obtain the injection dose of the patch-type insulin pump.

[0072] like Figure 6 and Figure 7 As shown, the height of the anti-evaporation shield 3 is increased so that the non-adhesive insulin pump 9 is placed above the anti-evaporation shield 3, and the infusion tubing 6 is placed inside the anti-evaporation shield 3 to prevent the external environment from affecting the target liquid transported in the tubing. The insulin pump 9 is placed on top of the top cover 3a of the anti-evaporation shield 3. Figure 7 As shown, the top cover 3a has a channel 31. The portion of the channel 31 furthest from the main housing 3b (referred to as the first portion) is thicker than the portion of the channel 31 closest to the main housing 3b (referred to as the second portion). This allows the infusion line 6 to be inserted and fixed in the first portion, and the capillary tube 5 to be inserted and fixed in the second portion. This design facilitates the organization of the capillary tube 5 and the infusion line 6, preventing disorderly placement of the capillary tube 5 and the infusion line 6 within the anti-evaporation cover 3, which could affect the measurement results. Since the anti-evaporation cover 3 does not contact the weighing area, and the ends of the capillary tube 5 and the infusion line 6 are fixed to the top cover 3a portion of the anti-evaporation cover 3, the weight of the capillary tube 5 will not be carried into the measurement results and will not affect the weighing measurement results of the weighing device 1. The lower end of the capillary tube 5 is immersed below the liquid surface in the container 2 to be tested, but does not contact the inner surface of the container 2. An appropriate amount of liquid is added to the anti-evaporation unit 7, and the weight of the container 2 to be tested is continuously measured by the high-precision weighing device 1, and the data is continuously transmitted to the data processing unit 8.

[0073] like Figure 2As shown, the top cover 3a of the anti-evaporation hood 3 is provided with a spherical handle, which makes it easy for the measuring personnel to lift the top cover 3a by hand. At the same time, the channel 31 for inserting the capillary tube 5 passes through the spherical handle, so as to fix the capillary tube to the top cover 3a and improve the fixation effect.

[0074] Example 2

[0075] like Figure 8 As shown, this embodiment also discloses a method for measuring the infusion dose of an insulin pump. The method utilizes the insulin pump infusion dose measurement system of Embodiment 1. The method includes:

[0076] Step S1: When the insulin pump 9 is not in the infusion state, the weight change rate of the first liquid 4 in the test container 2 is obtained based on the measurement data measured by the weighing device 1 at different times.

[0077] Step S2: Based on the measurement data measured by the weighing device 1 at the start of infusion and the measurement data measured by the weighing device 1 at the end of infusion, the initial infusion dose of the insulin pump 9 is obtained.

[0078] Step S3: Based on the infusion duration, weight change rate, and initial infusion dose, the actual infusion dose of insulin pump 9 is obtained.

[0079] In this embodiment, in step S1, since the test container 2 contains the first liquid 4, the first liquid 4 will evaporate over time. Therefore, when the insulin pump 9 is not in an infusion state, the weight of the first liquid 4 will undergo a slight change. This slight change can be obtained by subtracting the weights from the weights measured by the weighing device 1 multiple times. Then, the change is divided by the time difference to obtain the rate of weight change of the first liquid 4 in the weighing device 1. For example, the first weight measured by the weighing device 1 at a first time and the second weight measured at a second time, where the second time is later than the first time, are obtained. The change is obtained by subtracting the first weight from the second weight, and the time difference is obtained by subtracting the first time from the second time. The rate of weight change of the first liquid 4 in the test container 2 is then obtained by dividing the change by the time difference. If the rate of weight change is positive, it indicates that there is liquid absorption in the test container 2; if the rate of weight change is negative, it indicates that there is liquid evaporation in the test container 2.

[0080] In step S2, the weighing device 1 measures the data at the start of infusion, i.e., before the target liquid enters the test container 2. At this time, the weight of the test container 2 containing the first liquid 4 is the initial weight, which is measured by the weighing device 1. The weighing device 1 measures the data at the end of infusion, i.e., after the target liquid has completely entered the test container 2. At this time, the weight of the test container 2 containing the first liquid 4 and the infused target liquid is the completed weight, which is measured by the weighing device 1. The initial infusion dose of the insulin pump 9 is obtained by subtracting the initial weight from the completed weight.

[0081] In step S3, the target liquid in insulin pump 9 is infused from the reservoir within insulin pump 9 through infusion tubing 6 into the first receiving cavity of the test container 2, and the measurement is completed by the weighing device 1. This process takes time, defined as the infusion time. The infusion time is obtained by subtracting the infusion start time from the measurement completion time. Then, the total change in liquid volume (total absorption or total evaporation) during the infusion time is calculated by multiplying the infusion time by the rate of weight change. Finally, the initial infusion dose of insulin pump 9 is corrected using this total change, thereby obtaining a more accurate measurement result of the insulin pump 9's infusion dose, i.e., the actual infusion dose. Specifically, the actual infusion dose is obtained by subtracting the initial infusion dose from the total change. Compared to existing measurement platforms where the evaporation rate is affected by external factors and the evaporation rate is not constant, making it impossible to correct the measurement results, this application calculates the total change in liquid during the infusion time and then corrects the initial infusion dose of the insulin pump 9, thereby obtaining a more accurate measurement result of the infusion dose of the insulin pump 9, i.e., the actual infusion dose, which greatly improves the accuracy of the insulin pump infusion dose measurement results.

[0082] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. An infusion dose measurement system for an insulin pump, characterized in that, include: A weighing device, the weighing device including a weighing area; The test container is placed in the weighing area and has a first receiving cavity for containing the target liquid infused by the insulin pump. An anti-evaporation cover is provided on the outside of the container to be tested; It also includes an anti-evaporation unit, which is disposed inside the anti-evaporation cover and located outside the container to be tested. The anti-evaporation unit has a second receiving cavity that communicates with the first receiving cavity, and the second receiving cavity contains a second liquid.

2. The infusion dose measurement system of the insulin pump of claim 1, wherein, The first receiving cavity contains a first liquid, and the outlet of the insulin pump's infusion line is located below the liquid level of the first liquid.

3. The infusion dose measuring system of the insulin pump of claim 2, wherein, The surface of the first liquid away from the weighing area is covered with an insulating layer.

4. The infusion dose measurement system of the insulin pump of claim 2, wherein, The insulin pump has a capillary tube connected to the end of its infusion line, and the outlet of the infusion line is located at the end of the capillary tube away from the infusion line.

5. The infusion dose measuring system of the insulin pump of claim 4, wherein, The anti-evaporation hood has a channel through which the capillary tube passes.

6. The infusion dose measurement system of the insulin pump of claim 5, wherein, The anti-evaporation cover includes a main shell and a top cover covering the main shell. The main shell is placed in the non-weighing area of ​​the weighing device, and the top cover has the channel.

7. The infusion dose measurement system of an insulin pump of claim 1, wherein, It also includes a data processing unit, which is electrically connected to the weighing device and is used to acquire the measurement data of the weighing device.

8. The infusion dose measurement system of an insulin pump of any one of claims 1-7, wherein, It also includes a temperature and humidity monitoring unit, which is used to monitor the temperature and / or humidity inside the anti-evaporation cover.

9. A method of measuring an infusion dose of an insulin pump, the method comprising: The insulin pump infusion dose measurement method is implemented using the insulin pump infusion dose measurement system as described in any one of claims 1-8, and the insulin pump infusion dose measurement method includes: When the insulin pump is not in an infusion state, the rate of weight change of the first liquid in the test container is obtained based on the measurement data measured by the weighing device at different times. Based on the measurement data measured by the weighing device at the start of infusion and the measurement data measured by the weighing device at the end of infusion, the initial infusion dose of the insulin pump is obtained. The actual infusion dose of the insulin pump is obtained based on the infusion duration, the rate of weight change, and the initial infusion dose.

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