Injection amount collection device and insulin injection system

Abstract

The present application relates to a kind of injection amount acquisition device and insulin injection system, injection amount acquisition device includes rotating shell, fixed shell and angle detection component, rotating shell is connected with fixed shell, rotating shell is used to be connected with the rotary body of insulin injection pen, fixed shell can be moved to the side of the button of insulin injection pen and is used to transmit pressure to button, angle detection component is used to detect the rotation angle of rotating shell relative to fixed shell with the rotary body of insulin injection pen.The injection amount acquisition device and insulin injection system of the present application can be rotated by rotating shell to adjust the rotary body to operate to adjust injection amount, can be transmitted to the button of insulin injection pen by fixed shell, so that insulin is injected into patient's body, the rotation angle of rotating shell is detected by angle detection component, and injection amount is collected in the form of electrical signal, subsequent injection amount data is conveniently operated, such as data storage, transmission or analysis, and the like, simplify acquisition structure, improve operation convenience.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an injection volume acquisition device and an insulin injection system. Background Technology

[0002] For most diabetic patients, insulin injection is the routine and mainstream treatment. Currently, the most common methods are automatic infusion via insulin pumps or injection via insulin pens to control blood sugar. Compared to the more expensive insulin pumps, more diabetic patients choose insulin pens.

[0003] Current insulin pens use a rotary cap to set the injection volume. However, these pens lack electronic and intelligent functions such as volume recording and reminders, making volume acquisition inconvenient. This makes it difficult for patients to provide doctors with accurate infusion records, hindering the development of more precise treatment plans. Even with external volume acquisition devices integrated into insulin pens, their complex structure and high manufacturing costs impede widespread adoption. Summary of the Invention

[0004] Based on this, and addressing the issue of how to make insulin pens more electronic and intelligent, an injection volume acquisition device and an insulin injection system including the injection volume acquisition device are provided.

[0005] On one hand, the present invention provides an injection volume acquisition device for acquiring the insulin injection volume of an insulin pen. The injection volume acquisition device includes a rotating shell, a fixed shell, and an angle detection component: the rotating shell is rotatably connected to the fixed shell, the rotating shell is used to connect to the rotating body of the insulin pen, and the rotating shell can drive the rotating body to rotate; the fixed shell transmits pressure to the button of the insulin pen to perform insulin injection; the angle detection component is used to detect the rotation angle of the rotating shell relative to the fixed shell under pressure to obtain insulin injection volume information.

[0006] In some embodiments, the rotating shell includes a sleeve and a mounting body, the sleeve and the mounting body are connected, the sleeve is used to fit onto the rotating body, and the angle detection component is disposed within the mounting space of the mounting body.

[0007] In some embodiments, the sleeve and the mounting body are connected by a plurality of connecting arms, which are arranged along the periphery of the sleeve.

[0008] In some embodiments, the angle detection assembly includes an accelerometer and a circuit board, the accelerometer being electrically connected to the circuit board.

[0009] In some embodiments, the mounting body includes a base plate and a housing, the base plate being connected to the housing to enclose and form the mounting space.

[0010] In some embodiments, the fixed housing includes a movable part and a connecting part and a pressing part disposed at both ends of the movable part. The movable part slides relative to the mounting body at least when the pressing part is pressed, thereby driving the connecting part to move toward the button.

[0011] In some embodiments, the angle detection assembly includes an annular magnet and a magnetic sensor disposed opposite to each other, one of the annular magnet and the magnetic sensor being disposed in the rotating housing and the other being disposed in the fixed housing.

[0012] In some embodiments, the rotating housing includes a mounting plate and a sleeve disposed around the periphery of the mounting plate. The sleeve is used to fit onto the rotating body. The mounting plate has a shaft hole, and the fixed housing is rotatably connected to the shaft hole.

[0013] In some embodiments, the fixing shell includes a face shell and a base, the face shell being connected to the base, and a pivot is formed on the side of the base facing away from the face shell. The pivot is rotatably engaged with the shaft hole and is axially movable along the shaft hole. The pivot is used to connect to the button of the insulin pen so that when the face shell is pressed, the pivot transmits the pressure to the button to perform insulin injection.

[0014] In some embodiments, the mounting plate is provided with an annular magnet, which is coaxially surrounded by the pivot. A magnetic sensor is provided in the space enclosed by the faceplate and the base, and the magnetic sensor is opposite to the annular magnet. The magnetic sensor is used to detect the angle of rotation of the annular magnet as the mounting plate rotates.

[0015] In some embodiments, the fixed housing includes a clamping portion and a mounting portion movably connected to each other. The clamping portion is used to clamp and limit the pen body of the insulin injection pen. The rotating housing is rotatably connected to the mounting portion. When the rotating housing is sleeved on the rotating body, the rotating housing contacts the button. When the mounting portion is pressed, the mounting portion transmits pressure to the button through the rotating housing.

[0016] In some embodiments, the fixing shell includes a telescopic connection portion, and the mounting portion is connected to the clamping portion through the telescopic connection portion.

[0017] In some embodiments, the mounting portion includes a support plate and a top cover connected together. The support plate has a through hole. The rotating shell includes a sleeve portion and a rotating connection portion connected together. The sleeve portion is used to fit onto the rotating body, and the rotating connection portion is rotatably engaged with the through hole.

[0018] In some embodiments, the angle detection component is disposed within the space enclosed by the upper cover and the support plate. The angle detection component includes a magnet and a magnetic sensor. The magnet is coaxially connected to the rotating connection portion. When the rotating shell rotates relative to the support plate, the rotating connection portion drives the magnet to rotate. The magnetic sensor is disposed on the upper cover and is opposite to the magnet. The magnetic sensor is used to detect the angle at which the magnet rotates with the rotating connection portion.

[0019] In some embodiments, the injection volume acquisition device includes a control element for controlling the connection and disconnection of the circuitry of the angle detection component.

[0020] In some embodiments, the control element includes a power switch or a sensor that is triggered to connect the circuitry of the angle detection component when the retaining housing presses a button on the insulin pen.

[0021] Another aspect of the present invention provides an insulin injection system, including an insulin pen and the aforementioned injection volume acquisition device. The insulin pen includes a pen body and a knob cap disposed at the end of the pen body. The knob cap includes a rotating body and a button. When the rotating shell is connected to the rotating body, pressing the fixed shell can transmit pressure to the button, causing the rotating shell to rotate relative to the fixed shell under the drive of the rotating body. The injection volume acquisition device is used to acquire the insulin injection volume of the insulin pen by detecting the rotation angle of the rotating shell relative to the fixed shell.

[0022] In some embodiments, the rotating housing is detachably connected to the rotating body of the insulin pen, and the injection volume acquisition device can be separated from the insulin pen when the rotating housing is detached from the rotating body of the insulin pen.

[0023] In some embodiments, the rotating body and the rotating shell are an integral structure, and the button and the fixed shell are an integral structure.

[0024] Beneficial effects:

[0025] When using the above-mentioned injection volume acquisition device to collect injection volume, the rotating body can be rotated by rotating the shell to adjust the injection volume. After adjusting the injection volume, the insulin pen can be easily injected into the patient's body by pressing the button through the fixed shell, thus completing the insulin injection process. This injection volume acquisition device has a simple structure and is easy to operate. The rotation angle of the rotating shell is detected by the angle detection component, and the injection volume is collected in the form of an electrical signal, which facilitates subsequent operations such as data storage, transmission or analysis of the injection volume data. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other embodiments can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of an insulin pen in an insulin injection system after adjusting the injection volume, according to one embodiment.

[0028] Figure 2 This is a structural diagram of the insulin pen in another state of an insulin injection system according to one embodiment.

[0029] Figure 3 This is a front view of the injection volume acquisition device of Example 1 connected to an insulin pen, wherein the insulin pen is in a state of adjusting a certain injection volume;

[0030] Figure 4 for Figure 3 The diagram shown is a front view of an insulin pen equipped with an injection volume acquisition device after injection.

[0031] Figure 5 for Figure 4 The diagram shows a side view of the injection volume acquisition device connected to an insulin pen.

[0032] Figure 6 This is a three-dimensional structural diagram of the injection volume acquisition device of Example 1;

[0033] Figure 7 for Figure 6 A side view schematic diagram of the injection volume acquisition device is shown;

[0034] Figure 8 for Figure 7 A schematic diagram of the cross-sectional structure of the injection volume acquisition device along line II is shown.

[0035] Figure 9 This is a front view schematic diagram of the injection volume acquisition device in Example 2 connected to an insulin pen;

[0036] Figure 10 This is a side view of the injection volume acquisition device of Example 2 when it is connected to an insulin pen.

[0037] Figure 11 This is a three-dimensional structural diagram of the injection volume acquisition device in Example 2;

[0038] Figure 12 for Figure 11 A side view schematic diagram of the injection volume acquisition device is shown;

[0039] Figure 13 for Figure 12 A schematic diagram of the cross-sectional structure of the injection volume acquisition device along line II-II is shown.

[0040] Figure 14 This is a front view schematic diagram of the injection volume acquisition device in Example 3 connected to an insulin pen;

[0041] Figure 15 This is a side view of the injection volume acquisition device of Example 3 when it is connected to an insulin pen.

[0042] Figure 16 This is a three-dimensional structural diagram of the injection volume acquisition device in Example 3;

[0043] Figure 17 for Figure 16 A side view schematic diagram of the injection volume acquisition device is shown;

[0044] Figure 18 for Figure 16 A side view schematic diagram of the injection volume acquisition device from another perspective;

[0045] Figure 19 for Figure 18 A schematic diagram of the cross-sectional structure of the injection volume acquisition device along line III-III is shown.

[0046] Figure 20 This is a partial cross-sectional view of the injection volume acquisition device in Example 3 when it is connected to an insulin pen.

[0047] Figure 21 for Figure 20 The diagram shows a partially enlarged view of part A of the injection volume acquisition device. Detailed Implementation

[0048] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0049] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0050] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral 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 explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0051] It should be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0052] This invention provides an insulin injection system, including an insulin pen and an injection volume acquisition device, wherein the injection volume acquisition device is used to acquire the insulin injection volume from the insulin pen. For ease of understanding, the structure of the insulin pen will be briefly described before explaining the structure of the injection volume acquisition device.

[0053] Combination Figure 1 and Figure 2 As shown, the insulin pen 10 includes a pen body 11 and a knob cap 12 located at the end of the pen body 11. The knob cap 12 includes a rotating body 12a and a button 12b. The rotating body 12a is used to adjust the injection volume of the insulin pen 10 by rotating it at different angles. After adjusting the injection volume, pressing the button 12b will eject the insulin from the pen body 11, completing the injection operation. The insulin pen 10 can precisely adjust the required amount of insulin to be injected through the rotating body 12a, and continuous rapid injection can be achieved through the button 12b. Therefore, it can combine the functions of accurate infusion and rapid injection, greatly facilitating the user's operation and shortening the injection time for the patient.

[0054] It should be noted that in some embodiments, the pen body 11 is provided with an observation window 13, which is used to observe the scale used to characterize the injection volume. Specifically, when the rotating body 12a rotates relative to the pen body 11 to adjust the injection volume, the change in scale is observed through the observation window 13 to understand whether the injection volume is appropriate, thereby facilitating user operation. Figure 1 As shown, after adjusting the injection volume, the scale position on the rotating body 12a can be observed through the observation window 13 to determine the injection volume. The insulin corresponding to the injection volume is then dispensed from the pen body 11 by pressing the button 12b. Specifically, when button 12b is pressed, the rotating body 12a rotates relative to the pen body 11 to reset, and the reading observed in the observation window 13 returns to zero. This reset rotation means that the rotating body 12a is rotated when adjusting the injection volume, and during the dispensing of insulin from the pen body 11, the rotating body 12a moves back to its initial position to facilitate multiple injection operations. For example, as... Figure 2 As shown, as button 12b is pressed, rotating body 12a rotates relative to pen body 11 to reset. Finally, after the injection is completed, the zero point of the scale on rotating body 12a corresponds to the observation window 13.

[0055] It needs to be further explained that, by Figure 3 As can be seen, the rotating body 12a rotates spirally upwards or downwards relative to the pen body 11, meaning that when adjusting the injection volume, the upper end of the rotating body 12a can move away from the pen body 11. The method of ejecting the corresponding injection volume of insulin from the pen body 11 by pressing the button 12b can be either by the fixed shell 120 always abutting against the button 12b, or by the fixed shell 120 moving a certain distance after being pressed before abutting against the button 12b. The former method has a higher responsiveness to pressure transmission, while the latter method better prevents accidental activation of the injection. Those skilled in the art can choose the appropriate method based on their skill. The same applies to the pressure transmission methods in all other embodiments, which will not be elaborated further but are all within the scope of protection of this invention.

[0056] Understandably, after one injection, the injection volume can be adjusted by rotating the rotating body 12a. Correspondingly, after adjusting the injection volume, the injection operation can be performed by pressing the button 12b. Thus, the insulin pen 10 can accommodate multiple injections. The structure of the insulin pen 10 will not be described in detail here; it is sufficient that the injection volume can be adjusted by rotating the rotating body 12a, and that the rotating body 12a returns to its original position relative to the pen body 11 when the injection operation is performed by pressing the button 12b.

[0057] This invention addresses the issue of the complex and costly injection volume acquisition structure of the insulin pen 10 by proposing an improved injection volume acquisition device. The internal structure of the pen body 11 of the insulin pen 10 can be implemented using a screw, a step-locking structure, or other structures as needed by those skilled in the art. Further details are omitted here. As long as the insulin pen 10 possesses the aforementioned rotating body 12a and button 12b, the injection volume acquisition device of this invention can meet the requirements for acquiring the injection volume.

[0058] The injection volume acquisition device of the present invention can be directly assembled onto the existing insulin pen 10 for injection volume acquisition without the need for additional design of other matching structures on the insulin pen 10. It has no requirements on the model of the insulin pen and has wide applicability and high compatibility.

[0059] Specifically, the injection volume acquisition device will be further described below by way of example 1, Example 2 and Example 3.

[0060] Example 1

[0061] Specifically, in combination Figures 3 to 5 As shown, the injection volume acquisition device 100 includes a rotating shell 110, a fixed shell 120, and an angle detection component (not shown). The rotating shell 110 is rotatably connected to the fixed shell 120. The rotating shell 110 is detachably fitted onto the rotating body 12a, and the rotating shell 110 can drive the rotating body 12a to rotate. For ease of explanation in subsequent embodiments, the extension direction of the rotation axis 12c of the rotating body 12a when adjusting the injection volume is referred to as the "first direction." That is, after the rotating shell 110 is fitted onto the rotating body 12a, the rotating body 12a can be rotated around the first direction by operating the rotating shell 110, thereby adjusting the injection volume.

[0062] In the first direction, the fixed housing 120 and the button 12b are relatively fixed; more precisely, the fixed housing 120 and the button 12b will not have relative displacement. Along the first direction, the fixed housing 120 can move towards the side where the button 12b is located and is used to transmit pressure to the button 12b. Thus, after adjusting the injection volume by rotating the housing 110 to drive the rotating body 12a, the button 12b can be pressed by pressing the fixed housing 120 to complete the insulin injection operation. With this structural design, when injection is needed, the button 12b of the insulin pen 10 can be easily pressed via the fixed housing 120, allowing insulin to be injected into the patient's body, completing the insulin injection process. This injection volume acquisition device 100 has a simple and reliable structure, small size, is easy to carry, and is easy to install. Furthermore, it is easy to operate and has low structural requirements for the insulin pen 10 it is compatible with; it only needs that the pen cap of the insulin pen 10 is equipped with a rotating body 12a and a button 12b.

[0063] When the fixed shell 120 transmits pressure to the button 12b, that is, during the process of pushing insulin out of the pen body 11, the angle detection component is used to detect the rotation angle of the rotating shell 110 relative to the fixed shell 120 with the rotating body 12a. Since the rotation angles of the rotating shell 110 and the rotating body 12a around the first direction are the same, during the process of the rotating body 12a adjusting the injection volume, for each angle that the rotating shell 110 and the rotating body 12a rotate, the rotating body 12a will adjust the injection volume corresponding to that angle. Accordingly, when the fixed shell 120 applies pressure to the button 12b for injection, the rotating body 12a will drive the rotating shell 110 to rotate relative to the fixed shell 120 during the reset rotation process. Thus, the angle of rotation of the rotating shell 110 relative to the fixed shell 120 is equal to the angle of reset rotation of the rotating body 12a relative to the pen body 11. Therefore, when the rotation angle of the rotating shell 110 is obtained by the angle detection component, the angle of reset rotation of the rotating body 12a relative to the pen body 11 can be obtained. In this way, the injection volume can be calculated from the rotation angle of the rotating shell 110 relative to the fixed shell 120.

[0064] For ease of understanding, let's take the process of rotating body 12a one full rotation (i.e., rotating body 12a 360°) as an example, divided into 24 dose units. When the rotating shell 110 drives the rotating body 12a to rotate 15°, this represents one dose unit. Understandably, each subsequent 15° rotation increases the injection volume by one dose unit. For example, if the rotating shell 110 drives the rotating body 12a to rotate 45°, then the rotating body 12a adjusts the injection volume by 3 dose units. Correspondingly, after adjusting the injection volume, when the insulin corresponding to the injection volume is ejected from the pen body 11, the angle of the rotating body 12a's reset rotation is equal in magnitude and opposite in direction to the rotation angle during the injection volume adjustment process. When pressure is applied to the button 12b through the fixed shell 120 for injection, the rotating body 12a drives the rotating shell 110 to rotate relative to the fixed shell 120. The angle detection component detects the rotation angle of the rotating shell 110 relative to the fixed shell 120 to determine the reset rotation angle of the rotating body 12a, and thus obtains the injection volume corresponding to that angle. For example, in this embodiment, during the process of ejecting insulin from the pen body 11, the rotating body 12a causes the rotating shell 110 to rotate 15° relative to the fixed shell 120. The injection volume obtained by converting the rotation angle of the rotating shell 110 relative to the fixed shell 120 detected by the angle detection component is one dose unit. It should be noted that after the angle detection component detects the rotation angle of the rotating shell 110 relative to the fixed shell 120, it can feed back the detected angle information to the calculation module. The calculation module converts the rotation angle value into the volume of insulin corresponding to that rotation angle value, so that the injection volume can be intuitively fed back in terms of insulin volume. Of course, in some embodiments, the rotation angle can also be used to characterize the injection volume. For example, the process of rotating the rotating body 12a one revolution (i.e., rotating the rotating body 12a 360°) is divided into 24 dose units. When the rotating shell 110 drives the rotating body 12a to rotate 15°, it is one dose unit. At this time, the injection volume can be characterized as 1 unit. Correspondingly, when the rotating shell 110 drives the rotating body 12a to rotate 45°, the injection volume is 3 units.

[0065] In some embodiments, a wireless communication module can be provided in the injection volume acquisition device 100. This module includes, but is not limited to, Bluetooth, ZigBee, and Wi-Fi modules. The wireless communication module allows for the rapid transmission of detected injection volume information to a server or client. For example, if a user's mobile phone, computer, or other device has a data management module (such as an app) that communicates with the wireless communication module, the injection volume information can be easily managed and analyzed after being transmitted to the data management module via wireless communication. It should be noted that the rotation angle of the rotating shell 110 detected by the angle detection component can be used directly as the injection volume without processing. Alternatively, the rotation angle of the rotating shell 110 can be processed to represent the injection volume per unit dose. For example, a rotation angle of 15° corresponds to one unit dose, and injecting three unit doses corresponds to a rotation angle of 45° for the rotating shell 110. In other embodiments, the rotation angle of the rotating shell 110 can also be used to represent the injection volume through subsequent data processing, employing a hierarchical characterization method. For example, a rotation angle greater than 0° and less than or equal to 5° represents a micro-injection volume, a rotation angle greater than 5° and less than or equal to 10° represents a regular injection volume, and a rotation angle greater than 10° represents a large injection volume. Thus, when the insulin pen 10 is injected using the injection volume acquisition device 100, the insulin injection status can be fed back using micro-injection volume, regular injection volume, and large injection volume.

[0066] Furthermore, the injection volume acquisition device 100 can be equipped with a storage module to store the injection volume data for each injection. When the wireless communication module is activated, enabling the injection volume acquisition device 100 to communicate with devices such as mobile phones, the injection volume data can be transmitted to the mobile phone for data management and analysis.

[0067] The injection volume acquisition device 100 can be equipped with a reminder module to remind users to inject. For example, doctors can set information such as the single injection dosage and interval time for the reminder module via their mobile phones. When the injection time is recorded, the reminder module sends this information to the patient's or their family member's mobile phone via a wireless communication module to notify the patient or their family member to inject insulin in time to avoid affecting the patient's health.

[0068] It should be noted that the injection volume acquisition device 100 can be fixedly connected to the insulin pen 10 or detachably connected to the rotating body 12a of the insulin pen 10. When the injection volume acquisition device 100 is detachably connected to the insulin pen 10, for an insulin pen 10 without the injection volume acquisition device 100, the injection volume can be detected simply by assembling the injection volume acquisition device 100 onto the insulin pen 10. For example, in the aforementioned embodiment, since the rotating shell 110 is detachably fitted onto the rotating body 12a, in use, it is only necessary to fit the rotating shell 110 onto the rotating body 12a, which is a convenient and reliable assembly method.

[0069] The angle detection component can detect the rotation angle of the rotating shell 110 relative to the fixed shell 120 using giant magnetoresistive (GMR) or tunnel magnetoresistive (TMR) technology, or it can utilize a 3D chip (such as a 3D accelerometer). The type of angle detection component is not limited here.

[0070] In this embodiment, combined with Figures 6 to 8 As shown, the rotating housing 110 includes a sleeve 111 and a mounting body 112, which are connected. The sleeve 111 is fitted onto the rotating body 12a so that the rotating body 12a can be rotated by operating the sleeve 111, thereby adjusting the injection volume. The mounting body 112 is used to mount an angle detection component; more precisely, the angle detection component is disposed within the mounting space of the mounting body 112.

[0071] Furthermore, the sleeve 111 and the mounting body 112 are connected by multiple connecting arms 113, which are arranged along the periphery of the sleeve 111 to connect the sleeve 111 and the mounting body 112 into one unit.

[0072] In some embodiments, the angle detection assembly includes a battery (not shown), a 3D accelerometer 130, and a circuit board 140, both of which are electrically connected to the circuit board 140. The battery powers the 3D accelerometer 130 and the circuit board 140. When the rotating body 12a drives the rotating housing 110 to rotate, an acceleration is generated for each unit of rotation. At this time, the 3D accelerometer 130 automatically records a data point. Each data point is converted into a unit using an algorithm, and so on, ultimately recording the insulin injection volume throughout the entire infusion process.

[0073] It should be noted that the 3D accelerometer 130 in the angle checking component can also be replaced with a gyroscope sensor or other accelerometer sensors. The type of accelerometer sensor is not limited here.

[0074] Combination Figure 6 and Figure 7 As shown, the mounting body 112 includes a base plate 1121 and a housing 1122. The base plate 1121 and the housing 1122 are connected to enclose and form an installation space, which facilitates the installation of an angle detection component in the installation space.

[0075] Combination Figure 8 As shown, a sealing ring 150 is provided on the base plate 1121. The sealing ring 150 seals the connection gap between the base plate 1121 and the housing 1122, thereby ensuring that the angle detection component located in the installation space is in a well-sealed environment to extend its service life. The sealing ring 150 can be made of silicone or plastic, and is not limited thereto.

[0076] A groove (not shown in the figure) is provided on the base plate 1121 at the position where the sealing ring 150 needs to be installed. For example, a groove is provided at the edge of the base plate 1121 to facilitate the positioning of the sealing ring 150 and subsequent fixing of the sealing ring 150. In some embodiments, the installation of the housing 1122 and the base plate 1121 can compress the sealing ring 150, so that the sealing ring 150 performs a sealing function. The housing 1122 and the base plate 1121 can be connected by a snap-fit, a threaded connection, or screws. The connection method between the housing 1122 and the base plate 1121 is not limited here.

[0077] In some implementations, such as Figure 8 As shown, the base plate 1121 is provided with support posts 1121b for supporting the circuit board 140, so as to securely mount the circuit board 140 within the mounting space of the mounting body 112. The circuit board 140 can be connected to the support posts 1121b by adhesive. The support posts 1121b can be integrally formed with the base plate 1121, or they can be fixed to the base plate 1121 by plugging. In other embodiments, the circuit board 140 is bonded to the base plate 1121 by adhesive, or it can be connected to the base plate 1121 by screws. Other methods can also be used for mounting the circuit board 140 within the mounting space, which will not be described in detail here.

[0078] Continue reading Figure 7 and Figure 8As shown, the fixed housing 120 includes a connecting portion 121, a pressing portion 122, and a movable portion 123. The connecting portion 121 and the pressing portion 122 are disposed at both ends of the movable portion 123. The connecting portion 121 is used to connect with the button 12b. For example, the connecting portion 121 is connected to the button 12b by adhesive. Since the connecting portion 121 and the pressing portion 122 are connected by the movable portion 123 between them, the button 12b can be pressed via the pressing portion 122.

[0079] The movable part 123 slides relative to the mounting body 112 at least when the pressing part 122 is pressed, thereby driving the connecting part 121 to move toward the side where the button 12b is located, so as to transmit pressure to the button 12b.

[0080] In this embodiment, the movable part 123 is movably disposed in the mounting body 112 along the first direction. The movable part 123 is rotatably connected to the mounting body 112, so that when the movable part 123 transmits the pressure of the pressing part 122 to the button 12b through the connecting part 121, the rotating body 12a will drive the mounting body 112 to rotate relative to the movable part 123.

[0081] Specifically, in embodiments where the mounting body 112 includes a base plate 1121 and a housing 1122, such as Figure 7 and Figure 8 As shown, the base plate 1121 and the housing 1122 are respectively provided with a first through hole 1121a and a second through hole 1122a along the first direction at corresponding positions. The movable part 123 is movably inserted through the first through hole 1121a and the second through hole 1122a. Specifically, the movable part 123 can move relative to the mounting body 112 along the first direction. It should be noted that the movable part 123 is rotatably engaged with the first through hole 1121a and the second through hole 1122a, thereby allowing the mounting body 112 together with the sleeve 111 to rotate around the first direction, so that the sleeve 111 drives the rotating body 12a to rotate, thereby meeting the need for the rotating body 12a to adjust the injection volume.

[0082] The circuit board 140 has a hole 140a for the movable part 123 to pass through, thereby allowing the circuit board 140 to be positioned as centrally as possible in the mounting space, improving space utilization. This helps to minimize the size of the mounting body 112 while providing sufficient mounting space for the circuit board 140 and the battery, making the injection volume acquisition device 100 compact. Of course, the circuit board 140 may not have a hole 140a, as long as its position within the mounting space of the mounting body 112 avoids the movable part 123.

[0083] In some embodiments, the connecting portion 121 is plate-shaped so that it can be connected to the button 12b by adhesive. Since the movable portion 123 passes through the rotating housing 110, the pressing portion 122 is located on the side of the rotating housing 110 facing away from the insulin pen 10. The pressing portion 122 is flat to improve pressing comfort.

[0084] Furthermore, the connecting part 121 and the movable part 123 are integrally formed, and the movable part 123 and the pressing part 122 are detachably connected. Thus, during the installation process, it is only necessary to pass the movable part 123 through the mounting body 112 and connect the pressing part 122 and the end of the movable part 123 that is farther away from the connecting part 121, which makes the installation structure simple and the operation easy.

[0085] The connection between the pressing part 122 and the movable part 123 can be a threaded connection or a snap-fit ​​connection. In some embodiments, the pressing part 122 has a positioning groove, which can be used to position the movable part 123. Specifically, the movable part 123 is inserted into the positioning groove, and the connection stability between the movable part 123 and the pressing part 122 is further increased by adhesive.

[0086] It should be noted that in some embodiments, the injection volume acquisition device further includes a control element for controlling the connection and disconnection of the circuit of the angle detection component. Specifically, when it is necessary to use the angle detection component to detect the rotation angle of the rotating shell 110, the control element connects the circuit of the angle detection component; when it is not necessary to use the angle detection component to detect the rotation angle of the rotating shell 110, the control element disconnects the circuit of the angle detection component to save power consumption of the injection volume acquisition device 100. More precisely, during the process of pressing the fixed shell 120 to transmit pressure to the button 12b to dispense insulin, the control element connects the circuit of the angle detection component, so that the angle detection component acquires the insulin injection volume of the insulin pen 10 by detecting the rotation angle of the rotating shell 110 relative to the fixed shell 120 in the form of an electrical signal.

[0087] The control element design also greatly avoids the possibility of incorrect data collection by the injection volume acquisition device. This is especially important in actual use when the operator adjusts the injection volume and then reverses or temporarily modifies it. If a more mechanical and rigid injection acquisition device is used, redundant injection volume history information may be generated, which could easily lead to misunderstandings of the injection history by the operator, patient, or doctor, which is not conducive to treatment. The control element design of this invention ensures that the adjustment amount shown in the window is recorded only after the circuit of the angle detection component is turned on and the fixing shell 120 is pressed. This ensures that the multiple injection volumes collected by the injection volume acquisition device are highly consistent with the actual multiple injection volumes.

[0088] For ease of understanding, the control elements are described below only by way of example.

[0089] For example, after the rotating body 12a is rotated by the rotating shell 110 to adjust the injection volume, the circuit of the angle detection component is connected by the control element. Thus, during the process of the fixed shell 120 transmitting pressure to the button 12b to dispense insulin, the angle detection component detects the rotation angle of the rotating shell 110 to know the reset rotation angle of the rotating body 12a. Thus, the injection volume acquisition device 100 acquires the injection volume in the form of an electrical signal according to the correspondence between the rotation angle of the rotating body 12a and the injection volume, so as to facilitate subsequent operations such as data storage, transmission or analysis of the injection volume data.

[0090] The structure of the control element can vary. For example, in some embodiments, the control element is a switch, which allows direct control of the connection and disconnection of the angle detection component's circuit. The switch can be located in the insulin pen 10, the injection volume acquisition device 100, or it can be separate from both the injection volume acquisition device 100 and the insulin pen 10, and electrically connected to the angle detection component's circuit via wireless communication. The switch includes, but is not limited to, touch switches, micro switches, or push-button switches. Taking a micro switch as an example, the micro switch can be located on the end face of the mounting housing 120. During injection, when the user applies pressure to the button 12b of the insulin pen 10 through the mounting housing 120 to dispense insulin, the micro switch is triggered to connect the angle detection component's circuit, making the operation simple. In other embodiments, the micro switch may also be disposed between the fixed housing 120 and the button 12b of the insulin pen 10. When the user applies pressure to the button 12b of the insulin pen 10 through the fixed housing 120 to dispense insulin, the fixed housing 120 and the button 12b clamp the micro switch, thereby triggering the micro switch to connect the circuit of the angle detection component.

[0091] For example, in other embodiments, the control element can also be a sensor, including but not limited to light sensors, pressure sensors, or biosensors. Taking a light sensor as an example, the light sensor is disposed on the end face of the mounting housing 120. When the user applies pressure to the button 12b of the insulin pen 10 through the mounting housing 120 to dispense insulin, the light sensor is triggered to connect the circuit of the angle detection component. Taking a pressure sensor as an example, the pressure sensor can be disposed on the end face of the mounting housing 120 or between the mounting housing 120 and the button 12b of the insulin pen 10. In this way, when the user applies pressure to the button 12b through the mounting housing 120, the pressure sensor will be triggered due to the pressure, thus connecting the circuit of the angle detection component.

[0092] When the control element is a biosensor, on the one hand, the biosensor not only meets the needs of connecting and disconnecting the circuit of the angle detection component, but also detects false triggers caused by non-user operation through biometric identification. Specifically, the biosensor can be disposed on the end face of the fixed housing 120. During the user's insulin injection, the biosensor performs biometric identification to trigger the connection of the angle detection component's circuit. If the object identified by the biosensor is not a living organism, such as an object near the injection volume acquisition device 200, the biosensor will not trigger the connection of the angle detection component's circuit, thereby preventing false triggers. The biosensor can be a fingerprint sensor or a body temperature sensor, and is not limited thereto.

[0093] The type and location of the control elements will not be elaborated here, as long as they can meet the needs of connecting and disconnecting the circuit of the angle detection component.

[0094] Example 2

[0095] The main difference between the injection volume acquisition device 200 of Embodiment 2 and the injection volume acquisition device 100 of Embodiment 1 is that the structures of the rotating shell 210 and the fixed shell 220 in the injection volume acquisition device 200 of Embodiment 2 are different. Specifically, in conjunction with Figures 9 to 13 As shown, in the injection volume acquisition device 200 of this embodiment 2, the rotating shell 210 includes a mounting plate 211 and a sleeve 212 arranged around the periphery of the mounting plate 211. The sleeve 212 is used to fit onto the rotating body 12a. The mounting plate 211 has a shaft hole 211a. The fixed shell 220 includes a face shell 221 and a base 222. The face shell 221 is connected to the base 222. A rotating shaft 2221 is formed on the side of the base 222 facing away from the face shell 221. The rotating shaft 2221 is rotatably engaged with the shaft hole 211a and can move axially along the shaft hole 211a. The rotating shaft 2221 is used to connect with the button 12b. Preferably, the rotating shaft 2221 and the button 12b can also be glued together. When the face shell 221 is pressed, the rotating shaft 2221 transmits pressure to the button 12b. This structure simplifies the injection volume acquisition device and enables it to meet the requirements for injection volume acquisition. Ultimately, the angle detection component detects the angle of the rotating shell 210, and the injection volume is acquired via an electrical signal.

[0096] In some implementations, such as Figure 13 As shown, sleeve 212 is formed with two prongs along the first direction (i.e. Figure 1The button 12b has a frustum-shaped cavity arranged in the pressing direction, specifically an upper cavity 212a and a lower cavity 212b. In the first direction, the diameter of the upper cavity 212a gradually decreases, and the diameter of the lower cavity 212b gradually increases. The lower cavity 212b is sleeved with the rotating body 12a, and the upper cavity 212a provides clearance for the button 12b, preventing the button 12b from contacting the sleeve 212. This prevents accidental activation of the button 12b and premature injection of insulin during the rotation of the rotating body 12a by operating the sleeve 212, thus avoiding wastage. It should be noted that the sleeve 212 and the rotating body 12a are an interference fit, allowing the injection volume to be adjusted by rotating the rotating body 12a via the sleeve 212.

[0097] Continue reading Figure 13 As shown, the angle detection component includes a ring magnet 231 and a magnetic sensor 232 arranged opposite each other. The ring magnet 231 is fixed to the mounting plate 211 and coaxially surrounds the rotating shaft 2221. The magnetic sensor 232 is disposed within the space enclosed by the face shell 221 and the base 222. When the rotating body 12a drives the rotating shell 210 to rotate, the ring magnet 231 on the mounting plate 211 also rotates together, and the rotation angle of the rotating shell 210 is detected by the magnetic sensor 232. This rotation angle is the angle of the rotating body 12a's reset rotation. In this way, the injection volume can be collected in the form of an electrical signal from the magnetic sensor 232 for subsequent data storage, transmission, or analysis.

[0098] Furthermore, the mounting plate 211 is provided with a positioning sleeve 2111, which has an inner ring and an outer ring. The inner ring is flush with the wall of the shaft hole 211a, enabling rotational engagement between the mounting plate 211 and the rotating shaft 2221. The outer ring of the positioning sleeve 2111 is used to position the annular magnet 231, thereby fixing the annular magnet 231 relative to the mounting plate 211. Specifically, the annular magnet 231 is fitted onto the outer ring of the positioning sleeve 2111, and the two are interference-fitted to fix the annular magnet 231 to the mounting plate 211.

[0099] It should be noted that the positions of the annular magnet 231 and the magnetic sensor 232 can be interchanged; that is, the annular magnet 231 can be disposed inside the fixed housing 220, and the magnetic sensor 232 can be disposed inside the rotating housing 210. In this way, when the rotating housing 210 rotates relative to the fixed housing 220, the magnetic sensor 232 rotates in the magnetic field of the annular magnet 231, thereby obtaining the rotation angle of the rotating housing 210 relative to the fixed housing 220. In some embodiments, the rotating housing 210 has an open structure on the side of the mounting plate 211 where the positioning sleeve 2111 is provided, to facilitate the installation of the annular magnet 231 onto the positioning sleeve 2111.

[0100] The annular magnet 231 can be connected to the mounting plate 211 by adhesive. In this case, the positioning sleeve 2111 on the mounting plate 211 can be retained or removed. Of course, when the mounting plate 211 has the positioning sleeve 2111, the positioning effect of the positioning sleeve 2111 on the annular magnet 231 helps to keep the annular magnet 231 coaxial with the rotating shaft 2221. Thus, when setting the magnetic sensor 232, as long as the magnetic sensor 232 is correspondingly set coaxially with the rotating shaft 2221, good coaxiality between the magnetic sensor 232 and the annular magnet 231 can be achieved. This facilitates the accurate detection of the magnetic field angle of the annular magnet 231 by the magnetic sensor 232, thereby improving the accuracy of the rotation angle detection of the rotating housing 210.

[0101] The faceplate 221 and the base 222 can be connected by adhesive or by snap-fit. For example, in some embodiments, the base 222 is provided with snap-fit, and the number of snap-fits can be two or more, which is not limited here. An annular groove is provided on the inner wall of the faceplate 221, which is arranged around the first direction. In this way, as long as the faceplate 221 is placed on the base 222 and pressed, the snap-fit ​​can be made to engage with the annular groove to complete the installation of the faceplate 221 and the base 222. The structure is simple and easy to assemble.

[0102] Furthermore, a sealing ring 223 can be provided between the faceplate 221 and the base 222 to ensure good sealing of the space enclosed by the faceplate 221 and the base 222, thereby improving the protection of the internal components and extending their service life. Specifically, the snap-fit ​​between the faceplate 221 and the base 222 can be used to compress the sealing ring 223, so that the sealing ring 223 is stably clamped between the faceplate 221 and the base 222, achieving a good sealing effect and providing protection for the angle detection component located between the faceplate 221 and the base 222, thus extending its service life. In some embodiments, a groove is provided on the base 222 to pre-fix the sealing ring 223 in the groove provided on the base 222, and the positioning of the sealing ring 223 by the groove facilitates subsequent installation.

[0103] It should be noted that the space enclosed by the faceplate 221 and the base 222 can accommodate structures such as a circuit board 233 and a battery 234. For example, the circuit board 233 can be connected to the side of the base 222 facing away from the rotating shaft 2221 using adhesive. The circuit board 233 can serve as a circuit carrier, integrating the magnetic sensor 232. In some embodiments, the battery 234 can be stacked on the side of the magnetic sensor 232 facing away from the circuit board 233, using the battery 234 to power the circuit board 233 and the magnetic sensor 232. Specifically, the battery 234 can be soldered to the circuit board 233 via pins to reduce pressure on the magnetic sensor 232. Furthermore, the circuit board 233, battery 234, and magnetic sensor 232 are coaxially mounted along a first direction to improve space utilization. While ensuring the space enclosed by the faceplate 221 and the base 222 meets the installation requirements of the relevant structures, the components can be made as small as possible, achieving miniaturization.

[0104] Understandably, since the battery 234 and circuit board 233 are all located within the space enclosed by the casing 221 and the base 222, the sealing ring 223 can provide a good seal, preventing external moisture from easily entering and effectively ensuring the service life of the battery 234 and circuit board 233. In some embodiments, the sealing ring 223 is annular, coaxially arranged with the rotating shaft 2221, and surrounding the outer circumference of the circuit board 233.

[0105] Taking an angle detection component including a ring magnet 231 and a magnetic sensor 232 arranged opposite each other, with the ring magnet 231 and magnetic sensor 232 respectively disposed on a rotating shell 210 and a fixed shell 220, the operating principle of the injection volume acquisition device in one embodiment will be explained. Before injecting insulin into the patient's body, the rotating shell 210 can be rotated, causing the sleeve 212 of the rotating shell 210 to drive the rotating body 12a to rotate, thereby adjusting the injection volume. Then, during the process of ejecting insulin from the pen body 11 to inject into the patient's body, pressure is transmitted to the button 12b of the insulin pen 10 through the fixed shell 220 to eject the insulin. During this process, the rotating body 12a of the insulin pen 10 rotates relative to the pen body to reset, for example, rotating towards the zero mark position. Since the rotating shell 210 and the rotating body 12a are relatively fixed, the rotating shell 210 rotates together with the rotating body 12a relative to the fixed shell 220. In this way, the annular magnet 231 on the mounting plate 211 of the rotating shell 210 also rotates together, while the magnetic sensor 232, which is set in the fixed shell 220, is relatively fixed to the button 12b. Thus, the rotation angle of the rotating shell 210, i.e., the rotation angle of the rotating body 12a, can be determined by detecting the magnetic field of the annular magnet 231 using the magnetic sensor 232. The magnetic sensor 232 collects the injection volume in the form of an electrical signal to facilitate the subsequent storage, transmission, or analysis of injection data.

[0106] It should be noted that the type of magnetic sensor 232 can be a giant magnetoresistive (GMR) sensor or a tunnel magnetoresistive (TMR) sensor, which collects the injection volume corresponding to the rotation angle of the ring magnet 231.

[0107] Example 3

[0108] Combination Figure 14 and Figure 15 As shown, the injection volume acquisition device 300 of this embodiment also includes a fixed shell 320 and a rotating shell 310 that perform the same functions as those in embodiments 1 and 2. The main difference is that the structures of the rotating shell 310 and the fixed shell 320 of this injection volume acquisition device 300 are different. Specifically, in conjunction with Figures 16 to 18 As shown, the fixed shell 320 includes a clamping part 321, a mounting part 322, and a telescopic connecting part 323 connecting the clamping part 321 and the mounting part 322. The clamping part 321 is used to clamp and limit the pen body 11. The mounting part 322 can move relative to the clamping part 321 in a first direction (i.e., the extension direction of the rotation axis 12c of the rotating body 12a) through the telescopic connecting part 323. The rotating shell 310 is rotatably connected to the mounting part 322. In the first direction, the rotating shell 310 is located between the clamping part 321 and the mounting part 322. When the rotating shell 310 is sleeved on the rotating body 12a, the rotating shell 310 contacts the button 12b so that when the mounting part 322 is pressed, the mounting part 322 transmits pressure to the button 12b through the rotating shell 310.

[0109] Furthermore, combined Figures 16 to 19 As shown, the mounting part 322 includes a support plate 3221 and a top cover 3222 connected to each other. The support plate 3221 has a through hole 3221a. The rotating shell 310 includes a sleeve part 311 and a rotating connection part 312 connected to each other. The sleeve part 311 is used to be sleeved on the rotating body 12a. The rotating connection part 312 is rotatably engaged with the through hole 3221a.

[0110] It should be noted that in other embodiments, the clamping part 321 and the mounting part 322 may not be provided with the telescopic connecting part 323. For example, the clamping part 321 and the mounting part 322 may be connected by other connecting members, as long as the mounting part 322 can approach the clamping part 321 to transmit pressure to the button 12b.

[0111] An angle detection component is located within the space enclosed by the upper cover 3222 and the support plate 3221. The angle detection component includes a magnet 331 and a magnetic sensor 332. The magnet 331 is coaxially connected to the rotating connection part 312. When the rotating shell 310 rotates relative to the support plate 3221, the rotating connection part 312 drives the magnet 331 to rotate. The magnetic sensor 332 is located on the upper cover 3222 and is opposite to the magnet 331. The magnetic sensor 332 is used to detect the angle at which the magnet 331 rotates with the rotating connection part 312.

[0112] It should be noted that the space enclosed by the top cover 3222 and the support plate 3221 can be used to set up structures such as the battery 333 and the circuit board 334. Specifically, the battery 333 and the magnetic sensor 332 are electrically connected to the circuit board 334, and the battery 333 powers the magnetic sensor 332 and the circuit board 334.

[0113] Both the magnetic sensor 332 and the battery 333 can be soldered onto the circuit board 334. When the circuit board 334 is a circular plate, the magnetic sensor 332 can be placed in the middle of the circuit board 334, and the circuit board 334 and the rotating connection part 312 can be coaxially arranged, so that the magnetic sensor 332 and the magnet 331 maintain good coaxiality and improve the detection accuracy.

[0114] The circuit board 334 can be glued to the upper cover 3222. With the upper cover 3222 connected to the support plate 3221, the magnetic sensor 332 on the circuit board 334 faces the magnet 331. In some embodiments, the support plate 3221 and the upper cover 3222 are snap-fitted together. For example, the support plate 3221 has a protruding snap-fit ​​on one side opposite to the clamping portion 321, and the inner wall of the upper cover 3222 has a circumferentially arranged annular protrusion. The upper cover 3222 is fixed to the support plate 3221 by the engagement of the annular protrusion and the snap-fit.

[0115] Combination Figure 16 and Figure 19 As shown, the clamping part 321 is an open ring shape to facilitate clamping onto the pen body 11, thereby limiting the mounting part 322 circumferentially to the pen body 11 by the telescopic connecting part 323. When the rotating body 12a drives the rotating shell 310 to rotate, the magnetic sensor 332 located on the upper cover 3222 of the mounting part 322 remains stationary. During the rotation of the rotating body 12a, the magnet 331 will rotate via the rotating connecting part 312 of the rotating shell 310. Thus, the rotation angle of the rotating shell 310 can be obtained by detecting the rotation angle of the magnetic field of the magnet 331 using the magnetic sensor 332.

[0116] The telescopic connection 323 can be a telescopic rod. For example, in some embodiments, the two sides of the clamping part 321 are connected to the support plate 3221 by telescopic rods. The telescopic rods can be raised as the pen cap device rotates and rises, or lowered as the top cover 3222 of the mounting part 322 is pressed down.

[0117] The support plate 3221 can be a circular plate, and the through hole 3221a can be located at the center of the support plate 3221. In some embodiments, the magnet 331 is connected to the rotating connection part 312 via the bracket 331a.

[0118] Furthermore, the support plate 3221 is provided with a countersunk groove 3221b coaxial with the through hole 3221a. The countersunk groove 3221b is used for radial positioning of the bracket 331a, and the rotating connection part 312 can drive the bracket 331a to rotate within the countersunk groove 3221b, thereby causing the magnet 331 on the bracket 331a to rotate together with the rotating shell 310. The rotating connection part 312 and the bracket 331a can be connected by plug-in fitting or by glue. As long as the rotating body 12a drives the sleeve part 311 to rotate, the rotating connection part 312 can rotate under the drive of the sleeve part 311 to drive the bracket 331a to rotate, thus achieving the same rotation angle between the magnet 331 and the rotating shell 310. Subsequently, the magnetic sensor 332 can detect the magnetic field of the magnet 331 to determine the rotation angle of the rotating shell 310.

[0119] The bracket 331a has a positioning groove 331b on its upper part for positioning the magnet 331. The magnet 331 can be cylindrical, strip-shaped, or ring-shaped. The magnet 331 can be glued into the positioning groove 331b to achieve a stable connection between the magnet 331 and the support plate.

[0120] In some embodiments, when the injection volume acquisition device 300 is used to acquire the injection volume, the rotating body 12a is rotated by rotating the sleeve 311 to set the insulin dose. At this time, the magnet 331 connected to the rotating connection 312 rotates with the sleeve 311, and the telescopic connection 323 is also raised accordingly. When the rotation stops, the telescopic connection 323 stops and is fixed in position.

[0121] In some embodiments, the magnetic sensor 332 connected to the upper cover 3222 is located directly above the magnet 331. Specifically, both the magnetic sensor 332 and the magnet 331 are coaxial with the rotating connection portion 312. When the sleeve portion 311 rotates, the rotating connection portion 312 will drive the magnet 331 to rotate. The magnetic sensor 332 connected to the upper cover 3222 remains stationary relative to the magnet 331 in the first direction. Only around the first direction does the magnet 331 rotate relative to the magnetic sensor 332 with the rotation of the rotating connection portion 312.

[0122] Specifically, when the upper cover 3222 is pressed, the telescopic connecting part 323 extends and retracts, and the pressure is transmitted to the sleeve part 311 through the rotating connecting part 312, and acts on the button 12b. Preferably, combined with Figure 19 and Figure 21 As shown, the socket 311 is provided with a protrusion 311a that contacts the button 12b, thereby using the protrusion 311a to generate pressure on the button 12b, causing insulin to be injected into the patient's body. At this time, the magnetic sensor 332 automatically detects and records the rotation angle of the magnet 331 during the injection process, that is, the rotation angle of the rotating body 12a driven by the socket 311. In this way, the injection volume can be obtained by the correspondence between the rotation angle and the injection volume.

[0123] In some implementations, combined Figure 20 and Figure 21 As shown, the rotating body 12a is frustum-shaped, and its diameter gradually decreases towards the side where the button 12b is located. The socket 311 is coaxially sleeved on the rotating body 12a, and the button 12b is housed within the space of the socket 311. Part of the structure of the rotating body 12a is interference-fitted with the socket 311, and the button 12b is spaced from the peripheral sidewall of the socket 311.

[0124] It should be noted that the above embodiments 1, 2, and 3 are only for the convenience of describing the structure of the injection volume acquisition device and are independent of the structure of the insulin pen 10. Taking the injection volume acquisition device 100 of embodiment 1 as an example, in some implementations of the insulin injection system, the rotating shell 110 of the injection volume acquisition device 100 and the rotating body 12a of the insulin pen 10 are integrated, and the fixed shell 120 of the injection volume acquisition device 100 and the button 12b of the insulin pen 10 are integrated. In this way, the insulin pen 10 including the injection volume acquisition device 100 can acquire the injection volume in the form of an electrical signal, so as to facilitate subsequent operations such as data storage, transmission, or analysis of the injection volume data.

[0125] 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.

[0126] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. An injection volume acquisition device for acquiring the insulin injection volume of an insulin pen, characterized in that, The injection volume acquisition device includes a rotating shell, a fixed shell, and an angle detection component: the rotating shell is rotatably connected to the fixed shell, the rotating shell is used to connect to the rotating body of the insulin pen, and the rotating shell can drive the rotating body to rotate; the fixed shell transmits pressure to the button of the insulin pen to perform insulin injection; the angle detection component is used to detect the rotation angle of the rotating shell relative to the fixed shell under pressure to obtain insulin injection volume information; The rotating shell includes a sleeve and a mounting body, which are connected. The sleeve is used to fit onto the rotating body. The angle detection component is disposed within the mounting space of the mounting body. The mounting body includes a base plate and a shell cover, which are connected to the base plate to enclose and form the mounting space. A sealing ring is provided on the base plate to seal the connection gap between the base plate and the shell cover. A first through hole and a second through hole are respectively provided at corresponding positions on the base plate and the shell cover along a first direction. The fixed shell includes a movable part and connecting parts and pressing parts disposed at both ends of the movable part. The movable part is movably inserted through... The movable part rotates with the first and second perforations, and is able to move relative to the mounting body along the first direction. The movable part slides relative to the mounting body at least when the pressing part is pressed, thereby driving the connecting part to move toward the button. The angle detection component includes an acceleration sensor and a circuit board. The acceleration sensor is electrically connected to the circuit board. The circuit board has a hole for the movable part to pass through. The sleeve and the mounting body are connected by multiple connecting arms, which are arranged along the periphery of the sleeve.

2. The injection volume acquisition device according to claim 1, characterized in that, The connecting part is plate-shaped, and the pressing part is flat.

3. The injection volume acquisition device according to claim 1, characterized in that, The connecting part and the movable part are integrally formed, and the movable part and the pressing part are detachably connected.

4. The injection volume acquisition device according to claim 3, characterized in that, The pressing part and the movable part are connected by threads or snaps, or the pressing part has a positioning groove, the movable part is inserted into the positioning groove, and the movable part and the pressing part are connected by glue.

5. The injection volume acquisition device according to claim 1, characterized in that, The bottom plate has a groove at its edge, which positions the sealing ring.

6. The injection volume acquisition device according to claim 3, characterized in that, The base plate is provided with support columns for supporting the circuit board.

7. The injection volume acquisition device according to any one of claims 1-6, characterized in that, The injection volume acquisition device includes a control element for controlling the connection and disconnection of the circuit of the angle detection component.

8. The injection volume acquisition device according to claim 7, characterized in that, The control element includes a power switch or a sensor that is triggered to connect the circuit of the angle detection component when the button of the insulin pen is pressed by the fixed housing.

9. The injection volume acquisition device according to claim 8, characterized in that, The control element includes a light sensor, which is disposed on the end face of the fixed housing; Alternatively, the control element may include a pressure sensor disposed on the end face of the fixed housing or between the fixed housing and the button; Alternatively, the control element may include a biosensor disposed on the end face of the fixed housing.

10. An injection volume acquisition device for acquiring the insulin injection volume of an insulin pen, characterized in that, The injection volume acquisition device includes a rotating shell, a fixed shell, and an angle detection component: the rotating shell is rotatably connected to the fixed shell, the rotating shell is used to connect to the rotating body of the insulin pen, and the rotating shell can drive the rotating body to rotate; the fixed shell transmits pressure to the button of the insulin pen to perform insulin injection; the angle detection component is used to detect the rotation angle of the rotating shell relative to the fixed shell under pressure to obtain insulin injection volume information; the fixed shell includes a clamping part, a mounting part, and a telescopic connecting part, the mounting part being connected to the clamping part via the telescopic connecting part. The mounting part is connected to the holding part. The mounting part includes a support plate and a top cover connected to each other. The support plate has a through hole. The rotating shell includes a sleeve part and a rotating connecting part connected to each other. The sleeve part is used to fit onto the rotating body. The rotating connecting part is rotatably engaged with the through hole. The clamping part is used to clamp and limit the pen body of the insulin injection pen. The rotating shell is rotatably connected to the mounting part. When the rotating shell is fitted onto the rotating body, the rotating shell contacts the button. When the mounting part is pressed, the mounting part transmits pressure to the button through the rotating shell. The clamping part is an annular shape with an opening.

11. The injection volume acquisition device according to claim 10, characterized in that, The angle detection component is located within the space enclosed by the upper cover and the support plate. The angle detection component includes a magnet and a magnetic sensor. The magnet is coaxially connected to the rotating connection part. When the rotating shell rotates relative to the support plate, the rotating connection part drives the magnet to rotate. The magnetic sensor is located on the upper cover and is opposite to the magnet. The magnetic sensor is used to detect the angle at which the magnet rotates with the rotating connection part.

12. The injection volume acquisition device according to claim 10 or 11, characterized in that, The injection volume acquisition device includes a control element for controlling the connection and disconnection of the circuit of the angle detection component.

13. The injection volume acquisition device according to claim 12, characterized in that, The control element includes a power switch or a sensor that is triggered to connect the circuit of the angle detection component when the button of the insulin pen is pressed by the fixed housing.

14. An insulin injection system, characterized in that, The invention includes an insulin pen for injecting insulin and an injection volume acquisition device as described in any one of claims 1-13. The insulin pen includes a pen body and a knob cap located at the end of the pen body. The knob cap includes a rotating body and a button. When the rotating shell is connected to the rotating body, pressing the fixed shell can transmit pressure to the button, causing the rotating shell to rotate relative to the fixed shell under the drive of the rotating body. The injection volume acquisition device is used to acquire the insulin injection volume of the insulin pen by detecting the rotation angle of the rotating shell relative to the fixed shell.

15. The insulin injection system according to claim 14, characterized in that, The rotating shell is detachably connected to the rotating body of the insulin pen, and the injection volume acquisition device can be separated from the insulin pen when the rotating shell is detached from the rotating body of the insulin pen.

16. The insulin injection system according to claim 14, characterized in that, The rotating body and the rotating shell are an integral structure, and the button and the fixed shell are an integral structure.

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