A safety device for clinically identifying adverse reactions

Abstract

This invention relates to the field of devices for introducing or delivering media into the human body, specifically to a safety device for clinically identifying adverse reactions. The device includes a liquid level detection block, within which a liquid level sensor is installed. Container straps are connected to both ends of the liquid level detection block, with the free ends of the two straps detachably connected. It also includes a bubble detection block, a flow detection block, and a pressure detection block. The bubble detection block contains a bubble sensor, the flow detection block contains a flow sensor, and the pressure detection block contains a pressure sensor. A power supply is located within the liquid level detection block, and the liquid level sensor, bubble sensor, flow sensor, and pressure sensor are all connected to the power supply. The device also includes a controller, with the liquid level sensor, bubble sensor, flow sensor, and pressure sensor all electrically connected to the controller. An alarm is electrically connected to the controller. This invention combines multiple sensor detections and cross-verification, thereby improving detection accuracy.

Description

Technical Field

[0001] This invention relates to the field of devices for introducing or delivering media into or onto the human body, and more specifically to a safety device for clinically identifying adverse reactions. Background Technology

[0002] In the field of clinical medicine, intravenous infusion is an extremely common and important treatment method. To ensure the safety and effectiveness of the infusion process, timely monitoring of the infusion status and prevention of adverse reactions have become key aspects, leading to the development and widespread application of various related monitoring technologies.

[0003] Infusion monitoring devices based on liquid level sensors are currently one of the more commonly used technologies. This device accurately judges the infusion process by detecting changes in the liquid level within the infusion bottle or bag in real time. When the liquid level drops to a preset threshold, it can quickly issue an alarm, reminding medical staff to replace the infusion container or terminate the infusion, effectively avoiding the risk of air entering the infusion line due to the emptying of the infusion container. However, this technology can only monitor the liquid level within the infusion container and cannot detect the presence of air in the infusion line in real time, thus having limitations in preventing air from entering the patient's body.

[0004] The technology of using pressure sensors to monitor the pressure of infusion lines can sensitively detect subtle changes in pressure during infusion. When the infusion line becomes blocked, the fluid flow is obstructed, and the pressure rises significantly. After the pressure sensor detects the abnormal pressure signal, it can promptly trigger an alarm mechanism so that medical staff can take immediate action. However, although this technology can detect pressure changes within the infusion line, these changes can be caused by various factors, such as changes in the infusion rate or changes in the patient's position. Relying solely on the pressure sensor to determine if air has entered can easily lead to false alarms.

[0005] In addition, some high-end infusion devices are equipped with bubble detection functions based on ultrasonic detection principles. When the ultrasonic signal detects an air bubble passing through the infusion line, the device will immediately trigger an alarm, providing a certain degree of protection against air entering the patient's body. However, ultrasonic bubble detection technology has a detection blind spot; it may not be able to accurately identify tiny bubbles or bubbles located in specific positions.

[0006] In summary, existing technologies such as level sensors, pressure sensors, and bubble detection play important roles in clinical infusion monitoring. However, in preventing the adverse reaction of air embolism during infusion, these technologies have certain limitations due to issues such as errors in individual sensor detection and limited monitoring range, and cannot meet the higher requirements of clinical infusion safety monitoring. Summary of the Invention

[0007] The present invention aims to provide a safety device for clinical identification of adverse reactions, in order to solve the problems of errors and limited detection range in existing technologies.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A safety device for clinically identifying adverse reactions includes a liquid level detection block, a liquid level sensor disposed within the liquid level detection block, and container straps connected to both ends of the liquid level detection block, with the free ends of the two container straps being detachably connected; it also includes a bubble detection block, a flow detection block, and a pressure detection block, a bubble sensor disposed within the bubble detection block, a flow sensor disposed within the flow detection block, and a pressure sensor disposed within the pressure detection block; a power supply is disposed within the liquid level detection block, and the liquid level sensor, bubble sensor, flow sensor, and pressure sensor are all connected to the power supply; it also includes a controller, and the liquid level sensor, bubble sensor, flow sensor, and pressure sensor are all electrically connected to the controller, which is electrically connected to an alarm.

[0010] Preferably, as an improvement, the bubble detection block, flow detection block, and pressure detection block are detachably connected from top to bottom via magnets. The bottom of the pressure detection block is also connected to a base via a magnet. Each of the bubble detection block, flow detection block, pressure detection block, and base has a U-shaped slot facing one direction. A rubber pad is provided on the inner wall of the slot, and a through hole is provided in the middle of the rubber pad. An installation cavity is provided in the inner wall on both sides of the slot at the through hole. A retaining bead is slidably arranged in the installation cavity. The retaining bead is connected to a return spring. Each of the flow detection block, pressure detection block, and base has a top plate on top. The top plate can be inserted into the slot of the detection block above it and block the through hole.

[0011] Preferably, as an improvement, the ball is also connected to a connecting rod made of a permanent magnet. A return spring is slidably sleeved on the outside of the connecting rod. An electromagnet is provided at the free end of the connecting rod. The electromagnet and the opposite side of the connecting rod repel each other. The electromagnet is connected to a power source. The power source is electrically connected to a controller. A switch is provided on the liquid level detection block to control the power supply to cut off the power to the electromagnet.

[0012] Preferably, as an improvement, the container strap is fixed to the infusion stand, and the bubble detection block, flow detection block and pressure detection block are all slidably disposed on the infusion stand.

[0013] Preferably, as an improvement, the container strap is slidably connected to the infusion stand, and the container strap is provided with a hanging strap whose length can be adjusted.

[0014] Preferably, as an improvement, a cam is rotatably mounted inside the inner wall of the slot, and a torsion spring is connected to the cam's shaft. When the torsion spring is in its natural state, the protrusion of the cam is located inside the slot, and the top plate inserted into the slot can drive the cam to rotate.

[0015] The principles and beneficial effects of this solution are as follows:

[0016] 1. This solution combines multiple sensor detection methods, overcoming the limitations of single sensor detection, and forming a comprehensive, accurate, and reliable infusion monitoring system, greatly improving the level of infusion safety assurance. Specifically:

[0017] In practical applications, the container strap is wrapped around and fixed to the bottom of the infusion container, so that the liquid level detection block is located on the side of the bottom of the infusion container. The air bubble detection block, flow rate detection block, pressure detection block, and base are secured to the infusion tubing via slots and the beads within the slots. The liquid level sensor can not only detect changes in the liquid level in the infusion container in real time to determine the infusion progress, but also detect the rate of change of the liquid level in the infusion container to preliminarily determine whether the infusion is smooth; the pressure sensor can monitor the pressure in the infusion tubing in real time; the air bubble sensor can detect whether air bubbles have entered the infusion tubing; and the flow rate sensor can monitor the infusion flow rate in real time to help determine whether there are any abnormalities in the infusion tubing. These sensors not only perform their respective functions to complete the detection of various aspects of infusion data, but also the data from these sensors can complement and verify each other, reducing the impact of errors and improving the accuracy of air detection in the infusion tubing. For example, when the liquid level sensor detects an abnormal change in liquid level, it can be combined with the data from the air bubble sensor to determine whether the abnormal change in liquid level is due to air entering the infusion tubing, avoiding misjudgment caused by the failure or error of a single sensor, and greatly improving the accuracy of the detection results.

[0018] 2. The bubble detection block, flow detection block, and pressure detection block are detachably connected via magnets, allowing them to be combined into a single unit when not in use for easy storage and portability. In use, they can be separated sequentially and slid into position on the infusion tubing. Internal locking beads and return springs automatically secure the detection blocks to the tubing. This makes installation convenient, allowing medical personnel to install and adjust the device without complex operations, significantly improving work efficiency. Furthermore, the position of each detection block on the infusion tubing can be flexibly adjusted according to actual infusion needs, achieving accurate monitoring. Additionally, the sliding of each detection block on the infusion tubing straightens the tubing, preventing twisting and ensuring smooth infusion while facilitating detection and preventing accuracy issues caused by tubing twisting. Moreover, the separate design and sliding mechanism of the bubble, flow, and pressure detection blocks allow them to be installed in appropriate locations for detection, improving accuracy and preventing interference between the detection elements.

[0019] 3. This solution uses a control assembly consisting of a retaining bead connecting a permanent magnet rod, a return spring, and an electromagnet. When an air bubble is detected or the infusion is complete, the controller powers the electromagnet, which generates a repulsive force against the connecting rod, pushing the rod to extend the retaining bead further, compressing the infusion tubing and closing it. This enables automatic emergency closure of the infusion tubing, quickly stopping the infusion upon detection of air embolism risk or at the end of the infusion, effectively preventing air from entering the patient's body and ensuring patient safety.

[0020] 4. Furthermore, the container straps can be secured to the IV stand, providing additional support and stability for the infusion container and reducing container shaking. Simultaneously, the bubble detection block, flow detection block, and pressure detection block are slidably mounted on the IV stand. After the infusion tubing is inserted into each detection block, it is restrained on the IV stand, preventing the tubing from moving freely and reducing the risk of the tubing being pulled during movement of the IV stand. This solution, by reducing the shaking of the infusion container and tubing, also reduces the impact of shaking on the detection results, ensuring accurate data acquisition by each sensor. The sliding of the detection blocks on the IV stand is guided by the IV stand, allowing medical staff to easily adjust the detection position according to actual needs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure when used in Embodiment 1 of the present invention.

[0022] Figure 2 This is a partial structural diagram of Embodiment 1 of the present invention when not in use.

[0023] Figure 3 This is a top sectional view of the bubble detection block in Embodiment 1 of the present invention.

[0024] Figure 4 This is a side sectional view of the bubble detection block and the flow detection block in Embodiment 1 of the present invention.

[0025] Figure 5 This is a top sectional view of the bubble detection block in Embodiment 2 of the present invention.

[0026] Figure 6 This is a side sectional view of the bubble detection block and the flow detection block in Embodiment 5 of the present invention. Detailed Implementation

[0027] The following detailed description illustrates the specific implementation method:

[0028] The reference numerals in the accompanying drawings include: infusion container 1, infusion tube 11, drip chamber 12, container strap 2, liquid level detection block 21, liquid level sensor 22, bubble detection block 3, bubble sensor 31, slot 32, bead 33, rubber pad 34, flow detection block 4, flow sensor 41, pressure detection block 5, pressure sensor 51, base 6, mounting cavity 7, return spring 71, top plate 73, connecting rod 74, mounting ring 75, electromagnet 76, cam 8, and rotating shaft 81.

[0029] Example 1:

[0030] like Figure 1 As shown, a safety device for clinically identifying adverse reactions includes a level detection block 21, a bubble detection block 3, a flow detection block 4, and a pressure detection block 5. A level sensor 22 is installed inside the level detection block 21, and container straps 2 are glued to both sides of the level detection block 21. The free ends of the two container straps 2 are detachably connected via Velcro. A bubble sensor 31 is installed inside the bubble detection block 3; in this embodiment, the bubble sensor 31 is an ultrasonic bubble sensor 31. A flow sensor 41 is installed inside the flow detection block 4, and a pressure sensor 51 is installed inside the pressure detection block 5. A power supply (not shown) is installed inside the level detection block 21; the power supply is a miniature rechargeable battery. The level sensor 22, bubble sensor 31, flow sensor 41, and pressure sensor 51 are all connected to the power supply via wiring. A controller (not shown) is also included; the level sensor 22, bubble sensor 31, flow sensor 41, and pressure sensor 51 are all electrically connected to the controller, which is electrically connected to an alarm (not shown).

[0031] Combination Figure 2 , Figure 3 and Figure 4 As shown, the bubble detection block 3, flow detection block 4, and pressure detection block 5 are detachably connected from top to bottom via magnets. The bottom of the pressure detection block 5 is also detachably connected to a base 6 via a magnet. Each of the bubble detection block 3, flow detection block 4, pressure detection block 5, and base 6 has a U-shaped slot 32 facing one direction. A rubber pad 34 is glued to the inner wall of the slot 32. A through hole is formed in the middle of the rubber pad 34 on both side walls of the slot 32, connecting to a mounting cavity 7. A retaining bead 33 is slidably installed in the mounting cavity 7, and the retaining bead 33 is connected to a return spring 71. The retaining bead 33 can pass through the through hole under the action of the return spring 71. Top plates 73 are glued to both sides of the top of the flow detection block 4, pressure detection block 5, and base 6. The two top plates 73 can be inserted into the slots 32 of the detection blocks above them, respectively blocking the through holes on the two side walls of the slots 32.

[0032] Method of using a safety device for clinically identifying adverse reactions:

[0033] In practical application, the liquid level detection block 21 is placed on the side of the bottom of the infusion container 1, and the container straps 2 on both sides of the liquid level detection block 21 are used to wrap around the infusion container 1. The free ends of the straps are connected and fixed by Velcro to ensure that the liquid level detection block 21 is firmly attached to the infusion container 1.

[0034] When not in use, the bubble detection block 3, flow detection block 4, pressure detection block 5, and base 6 are magnetically connected from top to bottom for easy storage. When magnetically connecting the bubble detection block 3, flow detection block 4, pressure detection block 5, and base 6, ensure that the slots 32 of each module are aligned to ensure they are in the same direction.

[0035] In use, the bubble detection block 3, flow detection block 4, pressure detection block 5, and base 6 are attached to the infusion tube 11 via the slot 32 in an adsorption connection state. Since the slots 32 of the several modules are aligned, all modules can be attached to the infusion tube 11 at once without the need for multiple attachments, making the operation simple. When attaching to the infusion tube 11, the position of the uppermost bubble detection block 3 should be used as a reference. Typically, the bubble detection block 3 is attached below the drip chamber 12 on the infusion tube 11. During the snap-fitting process, due to the mutual attraction of several modules, the top plate 73 of the flow detection block 4, pressure detection block 5, and base 6 are all inserted into the detection blocks above them and block the through holes. Therefore, the retaining bead 33 in the through holes cannot pop out, the reset spring 71 is compressed, and a gap is left between the top plate 73 and the infusion tube 11. Thus, several detection blocks and base 6 can be successfully snapped onto the infusion tube 11 and can slide along the infusion tube 11. In addition, since the rubber pad 34 is provided on the inner wall of the slot 32, it can prevent the slot 32 from rubbing hard against the infusion tube 11, and the movement of the detection blocks will not damage the infusion tube 11.

[0036] After the detection blocks and base are attached to the infusion tubing 11, hold the flow detection block 4, pressure detection block 5, and base 6 together, separate them from the bubble detection block 3 as a whole, and slide them down the infusion tubing 11 until the flow detection block 4 slides to the appropriate position. After the flow detection block 4 separates from the bubble detection block 3, the top plate 73 of the flow detection block 4 is pulled out from the bubble detection block 3, and the through hole on the side wall of the slot 32 of the bubble detection block 3 is no longer blocked. The reset spring 71 resets and causes the retaining beads 33 in the through hole to pop out from the through hole. The retaining beads 33 on both sides clamp the infusion tubing 11, thereby fixing the bubble detection block 3 to the infusion tubing 11.

[0037] Similarly, after the flow detection block 4 slides to the appropriate position, the pressure detection block 5 and the base 6 are separated from the flow detection block 4 as a whole and continue to slide downward until the pressure detection block 5 slides to the appropriate position, the pressure detection block 5 separates from the flow detection block 4, the top piece 73 on the pressure detection block 5 is pulled out from the flow detection block 4, so that the retaining bead 33 inside the flow detection block 4 pops out to clamp the infusion tube 11, thereby fixing the flow detection block 4.

[0038] Similarly, when the pressure detection block 5 slides to the appropriate position, the base 6 is separated from the pressure detection block 5, and the top piece 73 on the base 6 is pulled out from the pressure detection block 5, so that the retaining bead 33 inside the pressure detection block 5 pops out to clamp the infusion tube 11, thereby fixing the pressure detection block 5.

[0039] This method automatically clamps the infusion tubing 11 after each detection block is moved into position, achieving automatic fixation of each detection block. The bubble detection block 3 is typically fixed below the drip chamber 12, the pressure detection block 5 is typically fixed on the infusion tubing 11 near the patient, and the flow detection block 4 is fixed at any position on the infusion tubing 11. Therefore, in practical applications, the length of the lines between each detection block is set according to the above requirements to accommodate the installation position of each detection block. During the movement of each detection block along the infusion tubing 11, the infusion tubing 11 can be straightened, preventing twisting and effectively avoiding blockage. This also facilitates detection by each sensor, improving detection accuracy. Furthermore, after the flow detection block 4, pressure detection block 5, and the top plate 73 on the base 6 are pulled out, they can act as guide plates, limiting the movement of the infusion tubing 11 on both sides, thus making the movement of the flow detection block 4, pressure detection block 5, and base 6 smoother. And after moving into position, the top plate 73 limits the movement of the infusion tubing 11 from both sides, further preventing twisting of the infusion tubing 11.

[0040] After installation, start all sensors, power supply and controller. Liquid level sensor 22 monitors the liquid level in infusion container 1 in real time. When the liquid level is lower than the preset minimum liquid level value, it transmits a signal to the controller. Bubble sensor 31 continuously monitors whether there are bubbles in infusion tube 11. Once a bubble is detected, it immediately feeds back a signal to the controller. Flow sensor 41 monitors the infusion flow rate in real time. If the flow rate is abnormal (higher or lower than the preset normal flow rate range), it sends an abnormal signal to the controller. Pressure sensor 51 monitors the pressure change during the infusion process in real time. When the pressure value exceeds the preset normal pressure range, it transmits a signal to the controller.

[0041] There is a mutual verification mechanism among multiple sensors. For example, when bubble sensor 31 detects a bubble, the controller will retrieve data from flow sensor 41 and pressure sensor 51 for comparison. If flow sensor 41 shows a sudden drop in flow and pressure sensor 51 shows abnormal pressure fluctuations, the data from the three sensors corroborate each other, which can highly confirm the abnormal situation of bubble blockage in infusion tube 11. If only bubble sensor 31 alarms, but the flow and pressure data do not change significantly, the controller will mark this alarm as pending confirmation and continuously monitor the data of each sensor for a period of time (1 minute) to prevent false alarms caused by misjudgment by bubble sensor 31.

[0042] For example, when the liquid level sensor 22 detects a rapid drop in liquid level, the controller will simultaneously analyze the data from the flow sensor 41. If the flow data shows an abnormally rapid increase in flow rate, the controller will combine the data from the pressure sensor 51 to determine whether there is any damage or leakage in the infusion tube 11. If the pressure also drops abnormally, the controller will further confirm the abnormal situation. If the flow and pressure data are normal, the liquid level sensor 22 may be faulty and requires medical personnel to check it.

[0043] Upon receiving an abnormal signal confirmed through mutual verification, the controller immediately activates the alarm, emitting an audible and visual alert to alert medical staff. After hearing the alarm, medical staff quickly check the specific abnormal information displayed on the controller screen (such as low fluid level, presence of air bubbles, abnormal flow rate, or abnormal pressure), and take appropriate measures based on the situation. For example, if the fluid level is too low, replace infusion container 1 promptly; if air bubbles are detected, remove them from infusion tubing 11; if the flow rate or pressure is abnormal, check infusion tubing 11 for blockages or twists, or adjust the infusion rate, etc.

[0044] After the infusion is complete, directly remove the bubble detection block 3, flow detection block 4, pressure detection block 5, and base 6 from the infusion tubing 11. At this point, the medication in the tubing 11 has been completely infused, so there's no need to worry about them affecting the tubing. Since the return spring 71 is already in its reset state, the retaining beads 33 will not extend further after the detection blocks and base 6 are removed from the tubing 11. Then, reconnect the detection blocks and base 6 sequentially using an adsorption mechanism. This allows for quick and accurate connection of each detection block and base 6, ensuring that the retaining slots 32 are aligned again for future use. During the adsorption connection process, the top plates 73 on the flow detection block 4, pressure detection block 5, and base 6 are inserted back into the retaining slots 32 of the detection blocks above them. The insertion of the top plates 73 forces the retaining beads 33 at the through-hole to retract into the through-hole, compressing the return spring 71 again. This completes the connection of the three detection blocks and base 6 for future use and easy storage. It should be noted that the infusion tube 11 has a very small diameter, and the two locking beads 33 only need to extend a small distance to clamp the infusion tube 11. Therefore, when the top plate 73 is inserted into the locking slot 32 again, it can smoothly drive the locking beads 33 back into the through hole.

[0045] Example 2:

[0046] Combination Figure 5 As shown, the difference between this embodiment and Embodiment 1 is that the retaining bead 33 is connected to a connecting rod 74 made of a permanent magnet. A return spring 71 is slidably sleeved on the outside of the connecting rod 74. One end of the return spring 71 is fixed to the retaining bead 33, and the other end is fixed to a mounting ring 75 fixed inside the mounting cavity 7. The connecting rod 74 slides through the mounting ring 75. An electromagnet 76 is glued to the free end of the connecting rod 74. The opposite sides of the electromagnet 76 and the connecting rod 74 repel each other. The electromagnet 76 is connected to a power source, which is electrically connected to a controller. A switch is provided on the liquid level detection block 21 to control the power supply to cut off the power to the electromagnet 76.

[0047] In this embodiment, when an alarm is triggered, the controller controls the power supply to energize the electromagnet 76. Initially, the connecting rod 74 is in contact with the electromagnet 76. After the electromagnet 76 is energized, it repels the connecting rod 74, causing the locking bead 33 to slide further out of the through hole. This allows the locking bead 33 to further clamp the infusion tube 11, achieving automatic clamping of the infusion tube 11 before medical personnel arrive to handle the situation, thus protecting the patient's safety.

[0048] Example 3:

[0049] The difference between this embodiment and Embodiment 1 is that the container strap 2 is glued and fixed to the infusion stand, and the bubble detection block 3, flow detection block 4, and pressure detection block 5 are all slidably connected to the infusion stand (achieved by opening a groove in the infusion stand to cooperate with the sliders on each detection block). When the bubble detection block 3, flow detection block 4, pressure detection block 5, and base 6 are not in use, they can be stably held on the infusion stand by the friction between the sliders and the grooves.

[0050] The container strap 2 is glued and fixed to the infusion stand, which enables the infusion container 1 and the infusion stand to form a stable overall structure. This fixing method greatly reduces the risk of displacement of the infusion container 1 due to shaking and collision. Especially when the patient pushes the infusion stand to move around, even if it encounters bumps or accidental collisions, the infusion container 1 can remain stable, avoiding the twisting and tangling of the infusion tube 11 due to container shaking, thereby ensuring the unobstructed flow of the infusion tube 11 and laying the foundation for safe infusion.

[0051] The sliding connection design of the bubble detection block 3, flow detection block 4, and pressure detection block 5 with the infusion stand allows medical staff to slide the detection blocks along the direction of the infusion stand after the infusion tube 11 is inserted into the slots 32 of each detection block. During this process, the movement of the detection blocks can naturally straighten the infusion tube 11, eliminating the bending and folding caused by the arbitrary suspension of the infusion tube 11, keeping the infusion tube 11 in a smooth delivery channel, reducing the liquid flow resistance caused by the bend in the tube, and avoiding interference with the normal detection of the flow sensor 41 and pressure sensor 51 due to changes in resistance, thereby improving the accuracy of the detection data.

[0052] Simultaneously, the sliding of the detection block along the IV stand also serves as a process of retracting the IV tubing 11. The retracted IV tubing 11 neatly adheres to one side of the IV stand, effectively preventing it from snagging or being pulled by surrounding objects when the patient moves. Previously, when patients pushed the IV stand, the loose IV tubing 11 was easily caught on obstacles such as door frames, tables, and chairs, potentially leading to damage, leakage, interruption of the IV infusion, or even serious risks such as air embolism. This embodiment, through the effective retraction and fixation of the IV tubing 11, significantly reduces these risks, ensuring IV safety for patients during activity.

[0053] Furthermore, the straightening and retraction of the infusion tubing 11 makes the flow of liquid within the tubing more stable and regular, enabling the level sensor 22, bubble sensor 31, flow sensor 41, and pressure sensor 51 to acquire more accurate and reliable data. For example, the smooth flow of the infusion tubing 11 avoids misjudgments caused by bubble accumulation due to local bends, and also allows the flow and pressure data to accurately reflect the actual situation during the infusion process, thereby improving detection accuracy. This allows the device to identify adverse reactions during the infusion process more promptly and accurately, providing strong support for medical personnel's diagnosis and intervention.

[0054] Example 4:

[0055] The difference between this embodiment and Example 3 is that the container strap 2 is also slidably connected to the infusion stand via a slider. The container strap 2 also has a hanging strap (not shown in the figure) for hanging on the hook at the top of the infusion stand. The length of the hanging strap is adjustable, using a method similar to that of a backpack strap in the prior art. This arrangement allows the infusion container 1 to be adjusted in height on the infusion stand as needed to meet the patient's usage requirements. For example, when the patient is sitting or lying down, the height of the container strap 2 is lowered so that the patient can visually observe the infusion process; when the patient moves the infusion stand to go out or to the toilet, the height of the container strap 2 is raised to ensure smooth infusion.

[0056] Example 5:

[0057] Combination Figure 6 As shown, the difference between this embodiment and embodiment 1 is that a cam 8 is rotatably installed inside the inner wall of the slot 32, and a torsion spring (not shown in the figure) is connected to the rotating shaft 81 of the cam 8. When the torsion spring is in its natural state, the protrusion of the cam 8 is located inside the slot 32, and the top plate 73 is inserted into the slot 32 to drive the cam 8 to rotate.

[0058] In this embodiment, when not in use, the top plate 73 is located in the slot 32, blocking the retaining bead 33 and the cam 8. At this time, the protrusion of the cam 8 is located inside the side wall of the slot 32, and the torsion spring stores force. When the top plate 73 is pulled out from the slot 32, the retaining bead 33 pops out into the slot 32, and at the same time, the cam 8 also rotates downward into the slot 32 under the action of the torsion spring. The retaining bead 33 and the protrusion of the cam 8 simultaneously clamp the infusion tube 11, effectively improving the fixing effect of the detection block.

[0059] When the top plate 73 is inserted into the slot 32 again, the top plate 73 not only presses the retaining bead 33 into the mounting cavity 7, but also pushes the protrusion of the cam 8 upward to rotate it into the cavity inside the inner wall of the slot 32, thereby resetting the retaining bead 33 and the cam 8 for the next use.

[0060] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A safety device for clinically identifying adverse reactions, characterized in that: The system includes a liquid level detection block, which houses a liquid level sensor. Container straps connect to both ends of the liquid level detection block, with detachable free ends. It also includes a bubble detection block, a flow detection block, and a pressure detection block. Each block contains a bubble sensor, a flow sensor, and a pressure sensor. A power supply is located within the liquid level detection block, and all the sensors (liquid level, bubble, flow, and pressure) are connected to the power supply. A controller is also included, with all sensors electrically connected to it. The controller is electrically connected to an alarm. The bubble detection block, flow detection block, and pressure detection block are detachably connected sequentially from top to bottom via magnets. The bottom of the pressure detection block is also connected via... The magnet is connected to the base. The bubble detection block, flow detection block, pressure detection block, and the base all have U-shaped slots facing the same direction. A rubber pad is placed on the inner wall of the slot, and a through hole is opened in the center of the rubber pad. Mounting cavities are set in the inner walls on both sides of the slot at the through hole. A retaining bead slides within the mounting cavity, and the retaining bead is connected to a return spring. A top plate is set on the top of the flow detection block, pressure detection block, and base. The top plate can be inserted into the slot of the detection block above it and block the through hole. The retaining bead is also connected to a connecting rod made of a permanent magnet. The return spring slides around the connecting rod. An electromagnet is set at the free end of the connecting rod. The electromagnet and the opposite side of the connecting rod repel each other. The electromagnet is connected to a power source, which is electrically connected to a controller. A switch is set on the liquid level detection block to control the power supply to cut off the electromagnet.

2. The safety device for clinically identifying adverse reactions according to claim 1, characterized in that: The container straps are fixed to the infusion stand, and the bubble detection block, flow detection block, and pressure detection block are all slidably mounted on the infusion stand.

3. A safety device for clinically identifying adverse reactions according to claim 2, characterized in that: The container strap is slidably connected to the infusion stand, and the container strap is equipped with a hanging strap whose length is adjustable.

4. A safety device for clinically identifying adverse reactions according to claim 3, characterized in that: A cam is rotatably mounted inside the slot. A torsion spring is connected to the cam's shaft. When the torsion spring is in its natural state, the cam's protrusion is located inside the slot. The top plate inserted into the slot can drive the cam to rotate.

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