Constant-temperature dripping speed adjusting prevention device for infusion

Abstract

The technical problem to be solved by the utility model is to provide the constant-temperature dripping speed regulation prevention device for infusion, which can preheat infusion liquid to effectively reduce uncomfortable symptoms in the infusion process, and can lock an infusion regulator to avoid the situation that the infusion speed is privately regulated. The device comprises an infusion apparatus body, a box body and a box cover, a telescopic rod is arranged below the box body, a dripping speed adjusting prevention structure is arranged on the telescopic rod, an infusion tube is sleeved with a heating device, and a controller, a power supply and a buzzer are arranged in the box body. According to the device, the behavior of privately adjusting the infusion speed is effectively prevented in the infusion process through the arranged dripping speed adjusting preventing structure, liquid in the infusion tube can be heated at constant temperature through the arranged controller and the heating device which are used in cooperation, the temperature of the liquid input into the body of a patient is appropriate, and the infusion speed is adjusted. And discomfort symptoms such as cold body feeling, even local skin numbness and the like in the infusion process are effectively relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instrument processing, in particular to a constant temperature and dripping speed prevention device for infusion. Background Art

[0002] In clinical practice, intravenous infusion is a widely used treatment method. It is favored because it can quickly deliver drugs or liquids into the blood circulation system. Its advantages are that it can quickly achieve drug efficacy and accurately control the dosage. However, in actual operation, especially when the liquid at room temperature is directly infused without proper treatment, some patients and their families may report that the liquid temperature is low, causing discomfort symptoms such as feeling cold or even local skin numbness during the infusion process; in addition, although the infusion regulator, a precision device, allows medical staff to flexibly adjust the infusion speed according to the patient's specific condition, in daily ward management, there are also problems with patients and their families arbitrarily changing the set infusion rate for various reasons. Although nurses will regularly inspect the ward and promptly correct non-standard infusion speeds, and strengthen the publicity and education of patients and their families on the correct use of infusion regulators and the importance of complying with safe infusion speeds, there are still individual cases where the education effect is not ideal and it is difficult to eliminate the phenomenon of private adjustment. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a constant temperature and dripping prevention device for infusion, which can preheat the infusion liquid to effectively reduce the discomfort symptoms during the infusion process, and can also lock the infusion regulator to avoid the situation of privately adjusting the infusion speed.

[0004] The technical solution adopted by the utility model to solve the above technical problems is: a constant temperature dripping speed prevention device for infusion, comprising an infusion device body and a box body, a box cover is arranged on the rear side of the box body through a hinged structure, a first hook is arranged on the upper end of the box body, a second hook is arranged on the upper end of the front side wall of the box body, an infusion bag of the infusion device body is arranged on the box body through the second hook, a telescopic rod is arranged below the box body, an anti-drip speed adjustment structure is arranged on the telescopic rod, and the anti-drip speed adjustment structure comprises a support plate and an anti-adjustment shell;

[0005] The rear end of the anti-adjustment housing is open, and the upper side wall and the lower side wall of the anti-adjustment housing are both provided with notches for accommodating the infusion tube;

[0006] The front surface of the support plate is provided with a slot adapted to the rear end of the anti-adjustment housing, a proximity switch is embedded in the bottom of the slot, the rear end of the anti-adjustment housing is inserted into the slot and the two are interference fit;

[0007] A first connecting rod is arranged at the rear side of the support plate, a first slip ring is arranged at one end of the first connecting rod away from the support plate, the first slip ring sleeve is arranged on the telescopic rod, and a first locking structure is arranged on the first slip ring sleeve;

[0008] The upper sleeve of the infusion tube is provided with a heating device and is located below the box body. The box body is provided with a controller, a power supply, and a buzzer. The heating device, the controller, and the buzzer are electrically connected to the power supply respectively, and the heating device and the buzzer are signal-connected to the controller respectively.

[0009] Furthermore, the heating device comprises a first semicircular tube and a second semicircular tube, and the first semicircular tube and the second semicircular tube are connected via a detachable structure;

[0010] A plurality of long strip-shaped PTC thermistor elements are embedded at intervals on the inner side walls of the first semicircular tube and the second semicircular tube along the height direction thereof;

[0011] The inner side walls of the first semicircular tube and the second semicircular tube are both provided with semicircular heat conducting sheets adapted thereto, and the semicircular heat conducting sheets are in contact with the corresponding PTC thermistor elements;

[0012] The PTC thermistor element is electrically connected to a power supply through a wire, and the PTC thermistor element is signal-connected to a controller through a signal line.

[0013] Furthermore, a dripping speed detection device is provided on the telescopic rod;

[0014] The dripping speed detection device adopts a slot-type optical coupling sensor, a second connecting rod is provided at the rear end of the slot-type optical coupling sensor, a second slip ring is provided at one end of the second connecting rod away from the slot-type optical coupling sensor, the second slip ring sleeve is provided on the telescopic rod, a second locking structure is provided on the second slip ring sleeve, and the upper and middle part of the Moffitt dropper is located in the notch of the slot-type optical coupling sensor;

[0015] A display screen is embedded on the box cover. The display screen and the slot-type optical coupling sensor are electrically connected to the power supply respectively. The display screen and the slot-type optical coupling sensor are signal-connected to the controller respectively.

[0016] Furthermore, a liquid level detection device is provided on the telescopic rod;

[0017] The liquid level detection device adopts a non-contact liquid level sensor, a third connecting rod is provided at the rear end of the liquid level sensor, a third slip ring is provided at one end of the third connecting rod away from the liquid level sensor, the third slip ring sleeve is provided on the telescopic rod, and a third locking structure is provided on the third slip ring sleeve;

[0018] The left and right side walls of the liquid level sensor are both provided with straps, and the free ends of the two straps are connected by Velcro, and the liquid level sensor is arranged in the middle of the Moffitt dropper through the straps;

[0019] The liquid level sensor is electrically connected to the power supply, and the liquid level sensor is signal-connected to the controller.

[0020] Furthermore, a first elastic restraint is provided at the lower middle portion of the left edge of the front side wall of the box body, and a second elastic restraint is provided at the lower middle portion of the right edge of the front side wall of the box body, and the free end of the first elastic restraint and the free end of the second elastic restraint are connected by Velcro.

[0021] Furthermore, the detachable structure includes a plurality of plug rods arranged on the left and right end surfaces of the first semicircular tube, and a plurality of plug holes are arranged on the left and right end surfaces of the second semicircular tube and respectively correspond to the plurality of plug rods;

[0022] When the first semicircular tube and the second semicircular tube together form a cylinder with a central hole, each insertion rod is located in the corresponding insertion hole and the two are interference fit.

[0023] Furthermore, a plurality of sound-permeable holes are arranged on the upper side wall of the box body, and the plurality of sound-permeable holes correspond to the buzzers.

[0024] The beneficial effects of the utility model are as follows:

[0025] 1. The device covers the infusion regulator through the anti-adjustment shell and the support plate. When someone opens the anti-adjustment shell privately during the infusion process, a signal is sent through the proximity switch, and the controller starts the buzzer to give an early warning, effectively preventing the behavior of privately adjusting the infusion speed.

[0026] 2. Through the coordinated use of the controller and the heating device, the liquid in the infusion tube can be heated at a constant temperature by the heating device, so that the temperature of the liquid injected into the patient's body is appropriate, effectively alleviating the discomfort symptoms such as feeling cold or even local skin numbness during the infusion process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the constant temperature dripping rate prevention device for infusion described in the utility model;

[0028] Figure 2 It is a schematic diagram of the structure in which the box body and the infusion bag described in the utility model are fixed together;

[0029] Figure 3 It is a rear view of the box body and box cover combined structure of the utility model;

[0030] Figure 4It is a structural schematic diagram of the combination of the dripping speed anti-adjustment structure, the dripping speed detection device, and the liquid level detection device described in the utility model;

[0031] Figure 5 It is a side view of the combined structure of the dripping speed anti-adjustment structure, the dripping speed detection device, and the liquid level detection device described in the utility model;

[0032] Figure 6 It is a schematic diagram of the explosion structure of the support plate and the anti-adjustment housing described in the utility model;

[0033] Figure 7 It is a front view of the support plate described in the utility model;

[0034] Figure 8 It is a schematic diagram of the explosion structure of the heating device described in the utility model;

[0035] Markings in the figure: infusion device body 1, infusion bag 101, infusion tube 102, Maofei's dropper 103, box body 2, box cover 3, first hook 4, second hook 5, telescopic rod 6, support plate 7, anti-adjustment shell 8, notch 9, slot 10, proximity switch 11, first connecting rod 12, first slip ring 13, first locking structure 14, heating device 15, first semicircular tube 1501, second semicircular tube 1502, semicircular heat conductive sheet 1503, drip rate detection device 16, second connecting rod 17, second slip ring 18, second locking structure 19, display screen 20, liquid level detection device 21, third connecting rod 22, third slip ring 23, third locking structure 24, strap 25, first elastic restraint belt 26, second elastic restraint belt 27, insertion rod 28, jack 29, sound-transmitting hole 30. DETAILED DESCRIPTION

[0036] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0037] It should be noted that the directions or positional relationships indicated by all directional indication terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" in the embodiments of the present application are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. They are only used to explain the relative positional relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0038] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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 connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0040] like Figure 1-8As shown, the constant temperature and drip rate prevention device for infusion comprises an infusion device body 1 and a box body 2. The infusion device body 1 is a prior art device that generally comprises an infusion bag 101, a bottle stopper piercer, an infusion tube 102, a Moffitt dropper 103, an infusion regulator and an infusion needle, etc. The rear side of the box body 2 is provided with a box cover 3 through a hinged structure, and the parts in the box body 2 can be maintained and replaced by opening the box cover 3. The upper end of the box body 2 is provided with a first hook 4, and the first hook 4 is used to hook the entire device on an existing infusion bracket. A second hook 5 is provided at the upper end of the front side wall of the box body 2, and the infusion bag 101 of the infusion device body 1 is set on the box body 2 through the second hook 5. The existing infusion bag 101 is a hanging rope, and the infusion bag 101 can be hung on the second hook 5 through the hanging rope. A telescopic rod 6 is provided below the box body 2. The purpose of the telescopic rod 6 is to meet the infusion tube 102 of different lengths and realize the free adjustment of the length. The telescopic rod 6 is provided with an anti-adjustment drip speed structure, and the anti-adjustment drip speed structure includes a support plate 7 and an anti-adjustment shell 8;

[0041] The rear end of the anti-adjustment housing 8 is open, and the size of the anti-adjustment housing 8 is adapted to the size of the infusion regulator. The upper and lower side walls of the anti-adjustment housing 8 are both provided with notches 9 for accommodating the infusion tube 102. When the infusion regulator is located in the anti-adjustment housing 8, the infusion tubes 102 at the upper and lower ends of the infusion regulator are respectively located in the two provided notches 9, ensuring that the infusion tubes 102 will not be bent to affect the flow of the infusion liquid;

[0042] The front surface of the support plate 7 is provided with a slot 10 adapted to the rear end of the anti-adjustment housing 8, a proximity switch 11 is embedded in the bottom of the slot 10, and the rear end of the anti-adjustment housing 8 is inserted into the slot 10 and the two are interference fit;

[0043] A first connecting rod 12 is provided at the rear side of the support plate 7, and a first slip ring 13 is provided at one end of the first connecting rod 12 away from the support plate 7. The first slip ring 13 is sleeved on the telescopic rod 6, and a first locking structure 14 is provided on the sleeve of the first slip ring 13. The first locking structure 14 generally adopts a tightening bolt. By unlocking the first locking structure 14, the first slip ring 13 can be moved up and down on the telescopic rod 6, thereby adjusting the up and down position of the support plate 7, so that the support plate 7 is facing the infusion regulator, and then the first locking structure 14 is locked, and then the anti-adjustment housing 8 is placed on the other side of the infusion regulator, that is, the infusion regulator is located between the anti-adjustment housing 8 and the support plate 7, and then the rear of the anti-adjustment housing 8 is The end can be inserted into the slot 10. The proximity switch 11 is embedded in the bottom of the slot to ensure that the anti-adjustment housing 8 is connected to the support plate 7 to completely cover the infusion regulator to avoid arbitrary adjustment. When someone tries to remove the anti-adjustment housing 8, the rear end of the anti-adjustment housing 8 is away from the proximity switch 11, and the proximity switch 11 will send a signal to the controller, and the controller will start the buzzer to sound a warning, so as to prevent the behavior of random adjustment. The controller is integrated with a wireless transmission device, such as a wireless network card, etc., which connects the controller to the work platform of the nurse station through a wireless network communication, so that the warning information is synchronously sent to the work platform of the nurse station through the network, so that the nurse on duty can find the situation and deal with it in time at the first time;

[0044] The upper sleeve of the infusion tube 102 is provided with a heating device 15 and is located below the box 2. The box 2 is provided with a controller, a power supply, and a buzzer. The heating device 15, the controller, and the buzzer are electrically connected to the power supply, respectively. The heating device 15 and the buzzer are respectively connected to the controller signal. A reset switch is also provided on the upper side wall of the box 2 and is connected to the controller signal. The reset switch is used to resolve the warning of false triggering. Through the coordinated use of the set controller and the heating device 15, the heating device 15 can heat the liquid in the infusion tube 102 at a constant temperature, so that the temperature of the liquid injected into the patient's body is appropriate, effectively alleviating the discomfort symptoms such as feeling cold or even local skin numbness during the infusion process.

[0045] like Figure 8 As shown, in this embodiment, as a preference, the heating device 15 includes a first semicircular tube 1501 and a second semicircular tube 1502, and the first semicircular tube 1501 and the second semicircular tube 1502 are connected via a detachable structure;

[0046] A plurality of long strip-shaped PTC thermistor elements are embedded at intervals on the inner side walls of the first semicircular tube 1501 and the second semicircular tube 1502 along the height direction thereof, that is, a plurality of long strip-shaped PTC thermistor elements are embedded at intervals on the inner side walls of the first semicircular tube 1501 along the height direction thereof, and a plurality of long strip-shaped PTC thermistor elements are embedded at intervals on the inner side walls of the second semicircular tube 1502 along the height direction thereof, and the specific number is determined according to actual conditions;

[0047] The inner side walls of the first semicircular tube 1501 and the second semicircular tube 1502 are both provided with a semicircular heat-conducting sheet 1503 adapted thereto, and the semicircular heat-conducting sheet 1503 is in contact with the corresponding plurality of PTC thermistor elements, so that the heat generated by the plurality of PTC thermistor elements is evenly dissipated through the semicircular heat-conducting sheet 1503, and is transmitted to the infusion liquid through the infusion tube 102 to preheat it;

[0048] The PTC thermistor element is electrically connected to a power supply through a wire, and the PTC thermistor element is signal-connected to a controller through a signal line. The temperature of the PTC thermistor element is controlled by the controller to achieve constant temperature heating.

[0049] like Figure 3 , Figure 4 , Figure 5 As shown, in this example, in order to facilitate intuitive observation of the infusion dripping rate, a dripping rate detection device 16 is provided on the telescopic rod 6;

[0050] The dripping rate detection device 16 adopts a slot-type optical coupling sensor, and a second connecting rod 17 is provided at the rear end of the slot-type optical coupling sensor. A second slip ring 18 is provided at one end of the second connecting rod 17 away from the slot-type optical coupling sensor. The second slip ring 18 is sleeved on the telescopic rod 6, and a second locking structure 19 is provided on the sleeve of the second slip ring 18. The second locking structure 19 generally adopts a tightening bolt. The middle and upper part of the Maofei dropper 103 is located in the notch of the slot-type optical coupling sensor. By unlocking the second locking structure 19, the second slip ring 18 can be moved up and down on the telescopic rod 6, thereby adjusting the upper and lower positions of the slot-type optical coupling sensor, so that the slot-type optical coupling sensor is facing the middle and upper part of the infusion regulator, and then the second locking structure 19 is locked, and the slot-type optical coupling sensor is clamped on the Maofei dropper 103. The number of drops can be counted by the slot-type optical coupling sensor, and the number of drops in one minute can be counted;

[0051] A display screen 20 is embedded on the box cover 3. The display screen 20 and the slot-type optical coupling sensor are electrically connected to the power supply, respectively. The display screen 20 and the slot-type optical coupling sensor are respectively connected to the controller signal. A button can also be set below the display screen 20 and connected to the controller signal. The button is used for setting parameters and other human-machine interactions, and can also be set through external keyboards and other devices. The controller intuitively displays the count of drops per minute through the display screen 20, which is convenient for medical staff to check the drip rate. In addition, the controller can set a range of the drip rate. When the actually monitored drip rate is out of the set range, the controller controls the buzzer to warn, and the warning is synchronously sent to the work platform of the nurse station through the network through a wireless transmission device, so that the nurse on duty can find the situation and deal with it in time. In addition, the display screen 20 can also use a touch display screen to facilitate human-computer interaction.

[0052] like Figure 4 , Figure 5 As shown, in this example, in order to avoid the failure to find out in time when the liquid has run out, a liquid level detection device 21 is provided on the telescopic rod 6;

[0053] The liquid level detection device 21 adopts a non-contact liquid level sensor, and a third connecting rod 22 is provided at the rear end of the liquid level sensor. A third slip ring 23 is provided at one end of the third connecting rod 22 away from the liquid level sensor. The third slip ring 23 is sleeved on the telescopic rod 6. A third locking structure 24 is provided on the sleeve of the third slip ring 23. The third locking structure 24 generally adopts a tightening bolt. By unlocking the third locking structure 24, the third slip ring 23 can be moved up and down on the telescopic rod 6, thereby adjusting the up and down position of the liquid level sensor so that the monitoring point of the liquid level sensor is directly opposite to the middle of the infusion regulator.

[0054] The left and right side walls of the liquid level sensor are both provided with straps 25, and the free ends of the two straps 25 are connected by Velcro. The liquid level sensor is arranged in the middle of the Moffitt dropper 103 through the straps 25, and the liquid level sensor and the Moffitt dropper 103 are bound together by the straps 25. Since the liquid level sensor and the slot-type optical coupling sensor are spaced far apart, the stability of the slot-type optical coupling sensor and the Moffitt dropper 103 can also be ensured. The liquid level in the Moffitt dropper 103 is monitored in real time by the liquid level sensor. When the liquid level of the Moffitt dropper 103 is below the middle, the liquid level sensor cannot detect the liquid and sends a signal to the controller, and the controller controls the buzzer to emit a sound for prompting.

[0055] The liquid level sensor is electrically connected to the power supply, and the liquid level sensor is connected to the controller signal. The liquid level sensor and the controller signal are used in conjunction with each other to effectively avoid the situation where the liquid has run out without being discovered in time due to human negligence, thereby effectively avoiding the situation where air enters the human body and causes air embolism. When the liquid level sensor detects that the liquid level of the Moffitt dropper 103 is below the middle, the controller will control the buzzer to make a sound for prompting, and the warning will be synchronously sent to the work platform of the nurse station through the network through the wireless transmission device, so that the nurse on duty can find the situation and deal with it in time. At this time, it is necessary to open the anti-adjustment shell 8 to close the infusion tube 102 through the infusion regulator to prevent all the liquid in the Moffitt dropper 103 from flowing out.

[0056] like Figure 2 As shown, in this example, in order to better fix the infusion bag 101 and prevent it from shaking, a first elastic restraint belt 26 is provided at the middle and lower part of the left edge of the front side wall of the box body 2, and a second elastic restraint belt 27 is provided at the middle and lower part of the right edge of the front side wall of the box body 2. The free end of the first elastic restraint belt 26 and the free end of the second elastic restraint belt 27 are connected by Velcro. Through the connection between the first elastic restraint belt 26 and the second elastic restraint belt 27, the infusion bag 101 can be fixed to the box body 2 to prevent it from shaking.

[0057] like Figure 8 As shown, in this example, as a preference, the detachable structure includes a plurality of plug rods 28 arranged on the left and right end surfaces of the first semicircular tube 1501, and a plurality of plug holes 29 are arranged on the left and right end surfaces of the second semicircular tube 1502 and correspond to the plurality of plug rods 28 respectively;

[0058] When the first semicircular tube 1501 and the second semicircular tube 1502 together form a cylinder with a central hole, each insertion rod 28 is located in the corresponding insertion hole 29 and the two are interference fit. Through the cooperation between the insertion rod 28 and the insertion hole 29, the connection and disassembly of the first semicircular tube 1501 and the second semicircular tube 1502 can be achieved.

[0059] like Figure 2 As shown, in this example, in order to allow the sound of the buzzer to penetrate better and be heard, a plurality of sound-permeable holes 30 are provided on the upper side wall of the box body 2, and the plurality of sound-permeable holes 30 correspond to the buzzer. Through the plurality of sound-permeable holes 30, the sound of the buzzer can penetrate better and be heard.

[0060] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A constant temperature dripping rate prevention device for infusion, comprising an infusion device body (1) and a box body (2), wherein the infusion device body (1) comprises an infusion bag (101), a bottle stopper piercer, an infusion tube (102), a Moffitt dropper (103), an infusion regulator and an infusion needle, a box cover (3) is provided on the rear side of the box body (2) through a hinged structure, a first hook (4) is provided on the upper end of the box body (2), a second hook (5) is provided on the upper end of the front side wall of the box body (2), and the infusion bag (101) of the infusion device body (1) is arranged on the box body (2) through the second hook (5), characterized in that: A telescopic rod (6) is provided below the box body (2), and an anti-drip speed adjustment structure is provided on the telescopic rod (6), and the anti-drip speed adjustment structure comprises a support plate (7) and an anti-drip speed adjustment shell (8); The rear end of the anti-adjustment housing (8) is open, and both the upper side wall and the lower side wall of the anti-adjustment housing (8) are provided with a notch (9) for accommodating the infusion tube (102); The front surface of the support plate (7) is provided with a slot (10) adapted to the rear end of the anti-adjustment housing (8), a proximity switch (11) is embedded in the bottom of the slot (10), and the rear end of the anti-adjustment housing (8) is inserted into the slot (10) and the two are interference fit; A first connecting rod (12) is arranged on the rear side of the support plate (7); a first sliding ring (13) is arranged at one end of the first connecting rod (12) away from the support plate (7); the first sliding ring (13) is sleeved on the telescopic rod (6); and a first locking structure (14) is sleeved on the first sliding ring (13); The upper sleeve of the infusion tube (102) is provided with a heating device (15) and is located below the box (2); a controller, a power supply, and a buzzer are arranged in the box (2); the heating device (15), the controller, and the buzzer are respectively electrically connected to the power supply; and the heating device (15) and the buzzer are respectively signal-connected to the controller.

2. A constant temperature drip rate prevention device for infusion according to claim 1, characterized in that: The heating device (15) comprises a first semicircular tube (1501) and a second semicircular tube (1502), wherein the first semicircular tube (1501) and the second semicircular tube (1502) are connected via a detachable structure; A plurality of long strip-shaped PTC thermistor elements are embedded at intervals along the height direction on the inner side walls of the first semicircular tube (1501) and the second semicircular tube (1502); The inner side walls of the first semicircular tube (1501) and the second semicircular tube (1502) are both provided with semicircular heat-conducting sheets (1503) adapted thereto, and the semicircular heat-conducting sheets (1503) are in contact with corresponding PTC thermistor elements; The PTC thermistor element is electrically connected to a power supply through a wire, and the PTC thermistor element is signal-connected to a controller through a signal line.

3. A constant temperature drip rate prevention device for infusion according to claim 2, characterized in that: The telescopic rod (6) is provided with a dripping speed detection device (16); The dripping speed detection device (16) adopts a slot-type optical coupling sensor, a second connecting rod (17) is provided at the rear end of the slot-type optical coupling sensor, a second slip ring (18) is provided at one end of the second connecting rod (17) away from the slot-type optical coupling sensor, the second slip ring (18) is sleeved on the telescopic rod (6), a second locking structure (19) is provided on the sleeve of the second slip ring (18), and the upper middle part of the Moffitt dropper (103) is located in the notch of the slot-type optical coupling sensor; A display screen (20) is embedded on the box cover (3); the display screen (20) and the slot-type optical coupling sensor are electrically connected to a power supply, respectively; and the display screen (20) and the slot-type optical coupling sensor are signal-connected to a controller, respectively.

4. A constant temperature drip rate prevention device for infusion according to claim 3, characterized in that: The telescopic rod (6) is provided with a liquid level detection device (21); The liquid level detection device (21) adopts a non-contact liquid level sensor, a third connecting rod (22) is provided at the rear end of the liquid level sensor, a third slip ring (23) is provided at one end of the third connecting rod (22) away from the liquid level sensor, the third slip ring (23) is sleeved on the telescopic rod (6), and a third locking structure (24) is sleeved on the third slip ring (23); The left and right side walls of the liquid level sensor are both provided with straps (25), and the free ends of the two straps (25) are connected by Velcro, and the liquid level sensor is arranged in the middle of the Moffitt dropper (103) through the straps (25); The liquid level sensor is electrically connected to the power supply, and the liquid level sensor is signal-connected to the controller.

5. A constant temperature drip rate prevention device for infusion according to claim 4, characterized in that: A first elastic binding belt (26) is provided at the lower middle portion of the left edge of the front side wall of the box body (2), and a second elastic binding belt (27) is provided at the lower middle portion of the right edge of the front side wall of the box body (2), and the free end of the first elastic binding belt (26) and the free end of the second elastic binding belt (27) are connected by Velcro.

6. A constant temperature drip rate prevention device for infusion according to claim 5, characterized in that: The detachable structure comprises a plurality of insertion rods (28) arranged on the left and right end surfaces of the first semicircular tube (1501), and a plurality of insertion holes (29) are arranged on the left and right end surfaces of the second semicircular tube (1502) and respectively correspond to the plurality of insertion rods (28); When the first semicircular tube (1501) and the second semicircular tube (1502) together form a cylinder with a central hole, each insertion rod (28) is located in the corresponding insertion hole (29) and the two are interference fit.

7. A constant temperature drip rate prevention device for infusion according to claim 6, characterized in that: A plurality of sound-permeable holes (30) are arranged on the upper side wall of the box body (2), and the plurality of sound-permeable holes (30) correspond to the buzzers.

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