Transfusion detection device

Abstract

The utility model provides an infusion detection device. The infusion detection device comprises a front shell, a middle shell, a rear shell, a control assembly and a sensor assembly, the sensor assembly comprises a fixed hanging ring, a pressure sensor and a hook; the control assembly comprises a control circuit board in signal connection with the pressure sensor; wherein the control circuit board is detachably arranged in a circuit board positioning frame on the inner wall of the front shell, a shielding cover is arranged on one side of the control circuit board, and a battery and a pressure sensor which are electrically connected with the control circuit board are arranged between the shielding cover and the middle shell; a wireless charging coil electrically connected with the control circuit board and an electromagnetic isolation sheet are arranged in a space formed by the middle shell and the rear shell; the electromagnetic isolation piece is arranged in the limiting groove of the middle shell, one side of the electromagnetic isolation piece is connected with the wireless charging coil, and the electromagnetic isolation piece covers the wireless charging coil. According to the utility model, electromagnetic interference among internal electronic components is avoided; through the arrangement of the circuit board fixing frame and the limiting groove, the LED lamp is convenient to install and reasonable in structural design.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an infusion detection device. Background Art

[0002] Infusion is a common method of disease treatment. The traditional infusion process requires manual monitoring by medical staff. When there are too many patients, it is easy to cause accidents due to confusion. Therefore, it is necessary to detect the infusion progress through an infusion detection device. The infusion detection device can timely understand the patient's infusion status, thereby ensuring the safety and effectiveness of the infusion.

[0003] However, there are still some defects in the infusion detection devices currently on the market, such as unreasonable structural layout of the device, inconvenient installation of components, poor stability of component installation, etc. In particular, due to the unreasonable structure and component layout, the internal components generate electromagnetic interference with each other, which will seriously affect the detection accuracy of the sensor. Utility Model Content

[0004] In order to overcome the defects of the prior art, the present invention provides an infusion detection device, and the specific technical solution is as follows:

[0005] The utility model provides an infusion detection device, comprising: a front shell, a middle shell and a rear shell, which are detachably connected in sequence, a control component and a sensor component; the sensor component comprises a fixed hanging ring, a pressure sensor and a hook; the control component comprises a control circuit board whose signal is connected to the pressure sensor;

[0006] A circuit board positioning frame is provided on the inner wall of the front shell, and the control circuit board is detachably arranged in the circuit board positioning frame; a shielding cover is provided on the side of the control circuit board facing the middle shell, and a battery electrically connected to the control circuit board and the pressure sensor are provided between the shielding cover and the middle shell; the upper end of the pressure sensor is connected to the fixing hanging ring, and the upper part of the front shell, the upper part of the middle shell and the upper part of the rear shell are all provided with a notch adapted to the shape of the fixing hanging ring, and the outer wall of the fixing hanging ring is detachably connected to the inner edge of the notch; the lower part of the front shell, the lower part of the middle shell and the lower part of the rear shell are all provided with a through hole, and the upper end of the hook is connected to the lower end of the pressure sensor through the through hole;

[0007] A wireless charging coil electrically connected to the control circuit board and an electromagnetic isolation plate are arranged in the space formed by the middle shell and the rear shell; a limiting groove is arranged on the side of the middle shell facing the rear shell, and the electromagnetic isolation plate is arranged in the limiting groove, one side of the electromagnetic isolation plate is connected to the inner wall of the limiting groove, and the other side is connected to the wireless charging coil; the projection of the electromagnetic isolation plate on the wireless charging coil covers the wireless charging coil.

[0008] In a specific embodiment, the control component further includes a button connected to the control circuit board on the side facing the front shell; and also includes a power supply terminal and / or a data transmission terminal;

[0009] A button positioning hole and a terminal positioning hole are provided on the inner wall of the front shell, the keycap of the button is positioned and connected to the button positioning hole, and the power supply terminal and / or the data transmission terminal is positioned and connected to the terminal positioning hole, so that one side of the keycap of the button and one side of the power supply terminal and / or the data transmission terminal are exposed from the front shell.

[0010] In a specific embodiment, the upper end of the pressure sensor is connected to the fixed hanging ring through a connecting rod, and the batteries are symmetrically arranged on both sides of the connecting rod.

[0011] In a specific embodiment, extension plates are provided on both sides of the lower end of the fixed hanging ring, through holes are provided on the extension plates, and screw holes are provided at positions corresponding to the through holes on the front shell. Screws are passed through the through holes of the extension plates and then screwed to the screw holes to achieve connection between the fixed hanging ring and the front shell. The front shell is also provided with limiting ribs, which abut against the lower end of the extension plate.

[0012] In a specific embodiment, the hook is connected to the lower end of the pressure sensor via a rotating assembly;

[0013] The rotating assembly includes a rotating shaft and a rotating limiter, the rotating shaft is fixedly arranged in the rotating limiter, and the upper end of the rotating limiter is connected to the lower end of the pressure sensor via a connecting rod; the upper end of the hook enters the rotating limiter through a notch at the lower part of the rotating limiter and is rotatably connected to the rotating shaft to realize rotational movement with the rotating shaft as the rotation center axis, and is limited by the inner wall of the notch of the rotating limiter when rotating to a preset position.

[0014] In a specific embodiment, a fixing groove is further provided on the inner wall of the front shell, and a magnetic attraction component is provided in the fixing groove; the projection of the shielding cover on the front shell covers the magnetic attraction component.

[0015] In a specific embodiment, an expansion limiting groove is provided on the outer surface of the rear shell, and the expansion limiting groove is used to accommodate the expansion member and limit the expansion member.

[0016] In a specific embodiment, the overall center of gravity of the infusion detection device is located on the center line of the device.

[0017] In a specific embodiment, the control circuit board is also connected to the front shell by screwing.

[0018] In a specific embodiment, the outer surface of the front shell and the outer surface of the rear shell are both provided with a smooth coating; and / or, the inner wall of the fixed hanging ring is provided with a smooth coating; and / or, the surface of the hook is provided with a smooth coating.

[0019] The utility model has at least the following beneficial effects:

[0020] (1) The utility model avoids mutual interference between internal electronic components by setting up the shielding cover and the electromagnetic isolation sheet, thereby improving the detection accuracy of the pressure sensor. In addition, by setting up the circuit board positioning frame and the limit groove, the control circuit board and the electromagnetic isolation sheet are easy to install, highly stable, and have a good user experience.

[0021] (2) The utility model further improves the functionality of the device by providing buttons, power supply terminals and / or data transmission terminals. In addition, the provision of button positioning holes and terminal positioning holes also makes the installation of buttons, power supply terminals and / or data transmission terminals convenient and stable.

[0022] (3) The front shell of the utility model is also screwed to the fixed hanging ring, and abuts against the lower end of the fixed hanging ring through limiting ribs. The structural design is reasonable, the fixed hanging ring has high stability, and the user experience is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is an exploded schematic diagram of the overall structure of the utility model;

[0025] Figure 2 It is an exploded schematic diagram of the middle shell and the rear shell of the utility model;

[0026] Figure 3 It is a schematic diagram of the structure of the inner wall of the front shell of the utility model;

[0027] Figure 4 It is a schematic diagram of the overall structure of the utility model;

[0028] Figure 5 Structural details of the extension plate for fixing the hanging ring;

[0029] Figure 6 This is a structural detail diagram of the rotating component.

[0030] Reference numerals:

[0031] 1-front shell; 11-circuit board positioning frame; 12-button positioning hole; 13-terminal positioning hole; 14-limiting ribs; 15-fixing slot; 151-magnetic suction piece; 16-screw hole; 2-middle shell; 21-limiting slot; 3-back shell; 31-expansion limiting slot; 4-control component; 41-control circuit board; 42-button; 5-sensor component; 51-fixing hanging ring; 511-extension plate; 5111-through hole; 5112-screw; 52-pressure sensor; 53-hook; 6-shielding cover; 7-battery; 8-notch; 9-through hole; 10-wireless charging coil; 17-electromagnetic isolation sheet; 18-POGO pin group; 19-connecting rod; 20-center line; 22-rotation component; 221-spindle; 222-rotation limiting piece; 2221-notch. DETAILED DESCRIPTION

[0032] In the following, various embodiments of the present invention will be described more fully. The present invention may have various embodiments, and adjustments and changes may be made therein. However, it should be understood that there is no intention to limit the various embodiments of the present invention to the specific embodiments disclosed herein, but rather the present invention should be understood to cover all adjustments, equivalents and / or alternatives that fall within the spirit and scope of the various embodiments of the present invention.

[0033] Hereinafter, the terms "include" or "may include" used in various embodiments of the present invention indicate the presence of disclosed functions, operations or elements, and do not limit the addition of one or more functions, operations or elements. In addition, as used in various embodiments of the present invention, the terms "include", "have" and their cognates are intended only to indicate specific features, numbers, steps, operations, elements, components or combinations of the foregoing, and should not be understood as first excluding the presence of one or more other features, numbers, steps, operations, elements, components or combinations of the foregoing or the possibility of adding one or more features, numbers, steps, operations, elements, components or combinations of the foregoing.

[0034] In various embodiments of the present invention, the expression "or" or "at least one of A or / and B" includes any combination or all combinations of the words listed at the same time. For example, the expression "A or B" or "at least one of A or / and B" may include A, may include B, or may include both A and B.

[0035] The expressions (such as "first", "second", etc.) used in the various embodiments of the present invention may modify the various components in the various embodiments, but may not limit the corresponding components. For example, the above expressions do not limit the order and / or importance of the elements. The above expressions are only used for the purpose of distinguishing one element from other elements. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, without departing from the scope of the various embodiments of the present invention, the first element may be referred to as the second element, and similarly, the second element may also be referred to as the first element.

[0036] It should be noted that in the present invention, unless otherwise clearly specified and defined, the terms "installation", "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Please refer to Figures 1 to 3 The utility model provides an infusion detection device, comprising: a front shell 1, a middle shell 2 and a rear shell 3, which are detachably connected in sequence, a control component 4 and a sensor component 5. The sensor component 5 comprises a fixed hanging ring 51, a pressure sensor 52 and a hook 53; the control component 4 comprises a control circuit board 41 connected to the pressure sensor 52 by signal.

[0038] Specifically, a circuit board positioning frame 11 is provided on the inner wall of the front shell 1, and the control circuit board 41 is detachably arranged in the circuit board positioning frame 11. A shielding cover 6 is provided on the side of the control circuit board 41 facing the middle shell 2, and a battery 7 electrically connected to the control circuit board 41 and a pressure sensor 52 are provided between the shielding cover 6 and the middle shell 2. The upper end of the pressure sensor 52 is connected to a fixed hanging ring 51, and the upper part of the front shell 1, the upper part of the middle shell 2 and the upper part of the rear shell 3 are all provided with a notch 8 that matches the shape of the fixed hanging ring 51, and the outer wall of the fixed hanging ring 51 is detachably connected to the inner edge of the notch 8. The lower part of the front shell 1, the lower part of the middle shell 2 and the lower part of the rear shell 3 are all provided with a through hole 9, and the upper end of the hook 53 enters the interior through the through hole 9 and is connected to the lower end of the pressure sensor 52.

[0039] In addition, a wireless charging coil 10 electrically connected to the control circuit board 41 and an electromagnetic isolation sheet 17 are provided in the space formed by the cooperation of the middle shell 2 and the rear shell 3. Specifically, a limiting groove 21 is provided on one side of the middle shell 2 facing the rear shell 3, and the electromagnetic isolation sheet 17 is provided in the limiting groove 21, and one side of the electromagnetic isolation sheet 17 is connected to the inner wall of the limiting groove 21, and the other side is connected to the wireless charging coil 10. The projection of the electromagnetic isolation sheet 17 on the wireless charging coil 10 covers the wireless charging coil 10.

[0040] It can be understood that, by setting the shielding cover 6 and the electromagnetic isolation sheet 17, mutual interference between internal electronic components is avoided, and the detection accuracy of the pressure sensor 52 is improved. In addition, by setting the circuit board positioning frame 11 and the limit groove 21, the control circuit board 41 and the electromagnetic isolation sheet 17 are easy to install, have high stability, and have a good user experience.

[0041] Optionally, the front shell 1, the middle shell 2 and the rear shell 3 can be detachably connected in sequence by snapping their edges together, or by screwing them together. Exemplarily, the front shell 1, the middle shell 2 and the rear shell 3 are detachably connected in sequence by snapping their edges together, and the inner wall of the front shell 1 and the middle shell 2 are further connected by screwing. Since the rear shell 3 will be blocked by the front shell 1 and the middle shell 2 in the installed state, the screws for screwing the middle shell 2 and the front shell 1 will not be exposed, making the shape of the utility model more beautiful.

[0042] Exemplarily, the control circuit board 41 is snap-fitted into the circuit board positioning frame 11 , and the control circuit board 41 is also connected to the front housing 1 by screwing.

[0043] Exemplarily, the shielding cover 6 may be a nickel silver shielding cover.

[0044] In a specific embodiment, please refer again to Figure 1 The control assembly 4 also includes a key 42 connected to the control circuit board 41 facing the front shell 1. In addition, it also includes a power supply terminal and / or a data transmission terminal (not shown in the figure, refer to the POGO pin group 18 below).

[0045] For details, please refer to Figure 3 A button positioning hole 12 and a terminal positioning hole 13 are provided on the inner wall of the front shell 1, the keycap of the button 42 is positioned and connected to the button positioning hole 12, and the power supply terminal and / or the data transmission terminal is positioned and connected to the terminal positioning hole 13, so that one side of the keycap of the button 42 and one side of the power supply terminal and / or the data transmission terminal are exposed to the front shell 1.

[0046] It can be understood that the provision of the button positioning hole 12 and the terminal positioning hole 13 facilitates the installation of the button 42, the power supply terminal and / or the data transmission terminal, thereby further improving the installation convenience of the utility model.

[0047] For example, the button 42 may be a switch button for controlling the on and off of the pressure sensor 52. The power supply terminal and the data transmission terminal are used to connect with an external device, supply power to the external device through the power supply terminal, and communicate data with the external device through the data transmission terminal. Figure 1 , the power supply terminal and / or the data transmission terminal is a POGO pin group 18, and the external device is an infusion clamp (not shown in the figure), so that the utility model is connected with the infusion clamp to form an infusion monitoring system.

[0048] Furthermore, a fixing groove 15 may be provided on the inner wall of the front shell 1, and a magnetic member 151 is provided in the fixing groove 15, so that when an external device is connected to the power supply terminal and / or the data transmission terminal, the magnetic attraction of the magnetic member 151 makes the connection between the utility model and the external device more stable. Exemplarily, the magnetic member 151 is a magnet. In addition, the projection of the shielding cover 6 on the front shell 1 covers the magnetic member 151 to prevent the magnetic member 151 from interfering with other electronic components.

[0049] In a specific embodiment, please refer to Figure 2 The upper end of the pressure sensor 52 is connected to the fixed hanging ring 51 through the connecting rod 19, and the battery 7 is symmetrically arranged on both sides of the connecting rod 19, so that the weight distribution of the utility model is more uniform and the use experience is better. In other embodiments, please refer to Figure 4 Preferably, the overall center of gravity of the infusion detection device of the present invention is located on the center line 20 of the device.

[0050] In a specific embodiment, please refer to Figure 3 and Figure 5 , the two sides of the lower end of the fixed hanging ring 51 are also provided with extension plates 511, and the extension plates 511 are provided with through holes 5111, and the positions corresponding to the through holes 5111 on the front shell 1 are provided with screw holes 16, and the connection between the fixed hanging ring 51 and the front shell 1 is realized by screwing the screws 5112 through the through holes 5111 of the extension plates 511 and then screwing with the screw holes 16. In addition, the front shell 1 is also provided with a limiting rib 14 on the side facing the fixed hanging ring 51, and the limiting rib 14 abuts against the lower end of the extension plate 511, thereby further improving the connection stability of the fixed hanging ring 51 and the support capacity of the pressure sensor 52. Preferably, the through holes 9 on the extension plates 511 on both sides are symmetrically arranged with the connecting rod 19 as the symmetry axis. Preferably, the limiting rib 14 abuts against the lower ends of the extension plates 511 on both sides symmetrically with the connecting rod 19 as the symmetry axis.

[0051] In a specific embodiment, the hook 53 is connected to the lower end of the pressure sensor 52 through the rotating assembly 22 .

[0052] For details, please refer to Figure 1 and Figure 6 The rotating assembly 22 includes a rotating shaft 221 and a rotating stopper 222. The rotating shaft 221 is fixedly disposed in the rotating stopper 222. The upper end of the rotating stopper 222 is connected to the lower end of the pressure sensor 52 via the connecting rod 19. The upper end of the hook 53 enters the rotating stopper 222 through the notch 2221 at the lower part of the rotating stopper 222 and is rotatably connected to the rotating shaft 221 to realize a rotating motion with the rotating shaft 221 as the rotating center axis, and is limited by the inner wall of the notch 2221 of the rotating stopper 222 when rotating to a preset position.

[0053] It can be understood that the hook 53 can be rotated by setting the rotating assembly 22. When the center of gravity of the object mounted on the hook 53 is not in the same vertical direction as the pressure sensor 52, the vertical direction of the center of gravity of the mounted object can be adjusted by rotating the hook 53, thereby avoiding detection errors of the pressure sensor 52 and improving the accuracy of detection.

[0054] In a specific embodiment, please refer again to Figure 2 The outer surface of the rear shell 3 is provided with an expansion limit groove 31, which is used to accommodate an expansion piece (not shown in the figure) and to limit the expansion piece. Optionally, the shape of the expansion limit groove 31 includes but is not limited to a rectangle, a circle, a triangle, etc. Exemplarily, the expansion piece can be a product information sticker or a laser engraving.

[0055] In a specific embodiment, the outer surface of the front shell 1 and the outer surface of the rear shell 3 are both provided with a smooth coating; and / or, the inner wall of the fixed hanging ring 51 is provided with a smooth coating; and / or, the surface of the hook 53 is provided with a smooth coating. It can be understood that since the utility model is applied to the medical field, the provision of the smooth coating can effectively prevent the adsorption of bacteria and germs, thereby improving the hygiene of the utility model. Exemplarily, the smooth coating can be a nano silver coating.

[0056] When the utility model is in use, the device is hung on the infusion pole by fixing the hanging ring 51, and the infusion bottle to be detected is hung on the hook 53. Since the lower end of the pressure detection device is connected to the hook 53, the pressure detection device can detect the weight of the infusion bottle to achieve infusion detection. When the utility model is charged, the device is hung on the charging device by fixing the hanging ring 51, so that the wireless charging coil 10 corresponds to the wireless charging seat on the charging device, thereby achieving charging.

[0057] To sum up, the infusion detection device of the utility model mainly avoids mutual interference between internal electronic components and improves the detection accuracy of the pressure sensor 52 through the setting of the shielding cover 6 and the electromagnetic isolation plate 17; through the setting of the circuit board positioning frame 11 and the limit groove 21, the control circuit board 41 and the electromagnetic isolation plate 17 are easy to install and have high stability.

[0058] Furthermore, the setting of the button positioning hole 12 and the terminal positioning hole 13 of the front shell 1, the setting of the limiting ribs 14 of the front shell 1, the setting of the extension plate 511 of the fixed hanging ring 51, the symmetrical distribution design of the battery 7 and the overall center of gravity design of the device all further improve the installation convenience and structural stability of the utility model, provide good user experience, and deserve to be widely promoted.

[0059] Those skilled in the art can understand that the accompanying drawings are only schematic diagrams of a preferred implementation scenario, and the modules or processes in the accompanying drawings are not necessarily required for implementing the present utility model.

[0060] Those skilled in the art will appreciate that the modules in the device in the implementation scenario can be distributed in the device in the implementation scenario according to the implementation scenario description, or can be changed accordingly and located in one or more devices different from the implementation scenario. The modules in the above implementation scenario can be combined into one module, or can be further split into multiple sub-modules.

[0061] The serial numbers of the above utility models are for description only and do not represent the advantages or disadvantages of the implementation scenarios.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An infusion detection device, characterized in that: include: A front shell, a middle shell and a rear shell, a control component and a sensor component that are detachably connected in sequence; the sensor component includes a fixed hanging ring, a pressure sensor and a hook; the control component includes a control circuit board whose signal is connected to the pressure sensor; A circuit board positioning frame is arranged on the inner wall of the front shell, and the control circuit board is detachably arranged in the circuit board positioning frame; a shielding cover is arranged on the side of the control circuit board facing the middle shell, and a battery electrically connected to the control circuit board and the pressure sensor are arranged between the shielding cover and the middle shell; the upper end of the pressure sensor is connected to the fixing hanging ring, and the upper part of the front shell, the upper part of the middle shell and the upper part of the rear shell are all provided with a notch adapted to the shape of the fixing hanging ring, and the outer wall of the fixing hanging ring is detachably connected to the inner edge of the notch; the lower part of the front shell, the lower part of the middle shell and the lower part of the rear shell are all provided with a through hole, and the upper end of the hook is connected to the lower end of the pressure sensor through the through hole; A wireless charging coil electrically connected to the control circuit board and an electromagnetic isolation sheet are arranged in the space formed by the middle shell and the rear shell; a limiting groove is arranged on the side of the middle shell facing the rear shell, and the electromagnetic isolation sheet is arranged in the limiting groove, one side of the electromagnetic isolation sheet is connected to the inner wall of the limiting groove, and the other side is connected to the wireless charging coil; the projection of the electromagnetic isolation sheet on the wireless charging coil covers the wireless charging coil.

2. The infusion detection device according to claim 1, characterized in that: The control assembly further includes a button connected to the control circuit board on the side facing the front shell; and also includes a power supply terminal and / or a data transmission terminal; A button positioning hole and a terminal positioning hole are provided on the inner wall of the front shell, the keycap of the button is positioned and connected to the button positioning hole, and the power supply terminal and / or the data transmission terminal is positioned and connected to the terminal positioning hole, so that one side of the keycap of the button and one side of the power supply terminal and / or the data transmission terminal are exposed from the front shell.

3. The infusion detection device according to claim 1, characterized in that: The upper end of the pressure sensor is connected to the fixed hanging ring through a connecting rod, and the batteries are symmetrically arranged on both sides of the connecting rod.

4. The infusion detection device according to claim 1, characterized in that: Extension plates are provided on both sides of the lower end of the fixed hanging ring, through holes are provided on the extension plates, screw holes are provided at positions corresponding to the through holes on the front shell, and screws are passed through the through holes of the extension plates and then screwed to the screw holes to achieve connection between the fixed hanging ring and the front shell; the front shell is also provided with limiting ribs, which abut against the lower end of the extension plate.

5. The infusion detection device according to claim 1, characterized in that: The hook is connected to the lower end of the pressure sensor through a rotating assembly; The rotating assembly includes a rotating shaft and a rotating limiter, the rotating shaft is fixedly arranged in the rotating limiter, and the upper end of the rotating limiter is connected to the lower end of the pressure sensor via a connecting rod; the upper end of the hook enters the rotating limiter through a notch at the lower part of the rotating limiter and is rotatably connected to the rotating shaft to realize rotational movement with the rotating shaft as the rotation center axis, and is limited by the inner wall of the notch of the rotating limiter when rotating to a preset position.

6. The infusion detection device according to claim 1, characterized in that: A fixing groove is also arranged on the inner wall of the front shell, and a magnetic attraction component is arranged in the fixing groove; the projection of the shielding cover on the front shell covers the magnetic attraction component.

7. The infusion detection device according to claim 1, characterized in that: An expansion limiting groove is arranged on the outer surface of the rear shell, and the expansion limiting groove is used to accommodate the expansion piece and limit the expansion piece.

8. The infusion detection device according to claim 1, characterized in that: The overall center of gravity of the infusion detection device is located on the center line of the device.

9. The infusion detection device according to claim 1, characterized in that: The control circuit board is also connected to the front shell by screw connection.

10. The infusion detection device according to claim 1, characterized in that: The outer surface of the front shell and the outer surface of the rear shell are both provided with a smooth coating; and / or, the inner wall of the fixed hanging ring is provided with a smooth coating; and / or, the surface of the hook is provided with a smooth coating.

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