Infusion alarm

Abstract

The utility model belongs to the technical field of medical apparatus and instruments, especially infusion alarm, including infusion support, the base lower part fixed mounting of infusion support has universal wheel, the upper end of infusion support is equipped with the mounting groove, the inner side wall opposite face of mounting groove all fixed mounting has installation shaft, the circular arc surface of installation shaft fixed mounting has support arm, the outside of support arm is provided with folding mechanism, the lower part of support arm is rotatably connected with support shaft through the ball bearing, the lower part fixed mounting of support shaft has the hook, the upper part of hook is hung and is equipped with infusion hanger, the inner side wall of infusion hanger is connected with infusion bottle, the bottle mouth circular arc surface of infusion bottle is connected with infusion detection ring, the bottle mouth lower part of infusion bottle is inserted with infusion hose, the outside of infusion hose is provided with automatic regulator. This infusion alarm, set up infusion detection ring and detect the liquid level in infusion bottle, set up automatic regulator and automatically clamp infusion hose.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an infusion alarm. Background Technology

[0002] Currently, there is a high demand for intravenous infusions in China. In special departments such as emergency infusion rooms, ICUs, and operating rooms, or in general departments, patients without family members present and unable to concentrate on their infusions are prone to air embolism, which can threaten their lives. Therefore, an infusion alarm is needed to both remind patients that the infusion is complete and to alert the on-duty nurses so that the infusion bottle (9) can be replaced promptly. Utility Model Content

[0003] Based on the existing technical problem that air embolism can easily occur in patients during infusion, this utility model proposes an infusion alarm.

[0004] The infusion alarm proposed in this utility model includes an infusion stand. A caster wheel is fixedly installed on the lower part of the base of the infusion stand. An installation groove is provided at the upper end of the infusion stand. An installation shaft is fixedly installed on opposite sides of the inner sidewall of the installation groove. A support arm is fixedly installed on the arc surface of the installation shaft. A folding mechanism is provided on the outer side of the support arm. A support shaft is rotatably connected to the lower part of the support arm via a ball bearing. A hook is fixedly installed on the lower part of the support shaft. An infusion hanger is hung on the upper part of the hook. An infusion bottle is clamped to the inner sidewall of the infusion hanger. An infusion detection ring is clamped to the arc surface of the bottle opening. An infusion tubing is inserted into the lower part of the bottle opening. An automatic adjuster is provided on the outer side of the infusion tubing.

[0005] Preferably, the folding mechanism includes a folding shaft, which is fixedly installed on one side of the infusion stand. A folding rod is rotatably connected to the arc surface of the folding shaft via a ball bearing. A retraction shaft is fixedly installed on one side surface of the support arm. A fixing rod is rotatably connected to the arc surface of the retraction shaft via a ball bearing. Limiting shafts are rotatably connected to the outer surfaces of the folding rod and the fixing rod via ball bearings. Locking blocks are fixedly installed at both ends of the limiting shaft. The opposing surfaces of the two locking blocks are respectively pressed against one side of the folding rod and the fixing rod. Limiting holes are also formed on the outer surfaces of the folding rod and the fixing rod. Locking shafts are slidably inserted into the inner walls of the two limiting holes.

[0006] By using the above technical solution, a snap-fit ​​shaft is set up. By pulling the snap-fit ​​shaft out of the limiting hole, the folding rod and the fixing rod can rotate around the limiting shaft. The two snap-fit ​​blocks fix the limiting shaft stably, allowing the support arm to rotate downward around the mounting shaft, thereby realizing the folding of the support arm, reducing the space occupied by the infusion stand when it is not in use, and preventing personnel from being injured.

[0007] Preferably, reusable Velcro is fixedly installed on the side surfaces of both ends of the infusion detection ring, a liquid level sensor is fixedly installed on the outer surface of the infusion detection ring, a signal transmitter is fixedly installed on the outer surface of the infusion detection ring, and a signal indicator light is also fixedly installed on the outer surface of the infusion detection ring.

[0008] The above technical solution involves setting up an infusion detection ring made of transparent soft rubber, which does not affect the liquid level sensor on the surface of the ring from detecting the liquid level in the infusion bottle. The infusion detection ring is fixed around the mouth of the infusion bottle by reusable Velcro. The liquid level sensor on the surface of the ring checks the liquid level in the infusion bottle. When the liquid level is detected to be too low, the situation is transmitted to the PDA via a signal transmitter, and the signal indicator light is activated to flash and alert the patient and staff.

[0009] Preferably, the automatic regulator includes a mounting plate, one side surface of which slides in contact with the infusion tubing, one end of which has a rotating groove, and the two opposite sides of the rotating groove are rotatably connected to a rotating shaft via ball bearings. A semi-circular fixing clip is fixedly connected to the arc surface of the rotating shaft, and a semi-circular fixing hole is formed on the outer surface of the semi-circular fixing clip.

[0010] The above technical solution involves setting a semi-circular fixing clip, which can rotate around a rotating axis and cooperate with the mounting plate to fix the automatic regulator on the outer surface of the infusion tubing that passes through the semi-circular fixing hole.

[0011] Preferably, a fixing plate is fixedly installed at one end of the mounting plate, and a fixing shaft is fixedly installed on the opposite surfaces of the two fixing plates. A limiting block is slidably inserted into the arc surface of the fixing shaft. A sliding groove is formed on one side surface of the limiting block. The arc surface of the fixing shaft is slidably inserted into the sliding groove. A limiting groove is formed on the upper part of the limiting block. A snap-fit ​​block is fixedly installed on the arc surface of the semi-circular fixing clamp. The inner sidewall of the limiting groove is in pressure contact with the upper surface of the snap-fit ​​block. A support frame is fixedly installed on one side of the limiting block. A pull rod is slidably inserted into the outer surface of the support frame. A pull plate is fixedly installed at one end of the pull rod. A telescopic block is fixedly installed at the other end of the pull rod. The outer surface of the telescopic block is slidably inserted into the outer surface of the limiting block. One end of the telescopic block penetrates and extends into the interior of the sliding groove. One side of the telescopic block is set as an inclined surface. One side surface of the telescopic block is in pressure contact with the arc surface of the fixing shaft. A limiting spring is fixedly installed on one side surface of the telescopic block. One end of the limiting spring is fixedly connected to the inner side of the support frame.

[0012] The above technical solution includes a limiting block that slides up and down under the constraints of the sliding groove and the fixed shaft, allowing the limiting groove on the limiting block to press against the snap-fit ​​block on the semi-circular fixing clamp, thus fixing the limiting block to the semi-circular fixing clamp and ensuring the automatic regulator is stably fixed on the infusion tubing. A limiting spring is also included, allowing the telescopic block to be stably inserted into the sliding groove on the limiting block, pressing against the fixed shaft and preventing the limiting block from moving upwards. A pull plate is provided, pulling the pull plate causes the pull rod to move outwards and compress the limiting spring, causing the telescopic block to move outwards away from the sliding groove, allowing the limiting block to move upwards and release the pressing contact with the snap-fit ​​block, allowing the semi-circular fixing clamp to rotate. After releasing the pull rod, the limiting spring resets, allowing the telescopic block to re-insert into the fixing groove. One side of the telescopic block is designed as an inclined surface, so that the downward movement of the limiting block causes the fixed shaft to contact the inclined surface and press the telescopic block outwards, preventing the downward movement of the limiting block from being limited by the telescopic block.

[0013] Preferably, an electric push rod is fixedly installed on the inner arc sidewall of the semicircular fixing clamp, and a pressure plate is fixedly installed on the telescopic end of the electric push rod. One side surface of the pressure plate is in contact with the arc surface of the infusion tubing.

[0014] With the above technical solution, when the PDA receives the alarm signal transmitted by the signal transmitter, it will send a signal to activate the electric push rod, so that the pressure plate squeezes the infusion tubing, interrupting the infusion and preventing air from entering the patient's body.

[0015] The beneficial effects of this utility model are as follows:

[0016] The IV stand is easily moved thanks to its omnidirectional casters. A folding mechanism allows the support arms to be folded away when not in use, reducing space occupation. An infusion detection ring is included, compatible with various types of infusion bags or bottles. The sensor in the detection ring not only converts the current infusion completion information into a red indicator light and an alarm sound to alert the patient that the IV bag is empty and needs to be replaced or the needle removed, but also transmits the alarm signal to the automatic regulator below the drip chamber and the PDA in the nurses' station. Upon receiving the alarm, the automatic regulator immediately clamps the IV set below, using information technology to monitor the infusion status in real time, ensuring patient safety and preventing air embolism. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the infusion alarm device proposed in this utility model;

[0018] Figure 2 This is an enlarged view of point A of the infusion alarm device proposed in this utility model;

[0019] Figure 3This is an enlarged view of section B of the infusion alarm device proposed in this utility model;

[0020] Figure 4 This is a three-dimensional view of the infusion stand structure of the infusion alarm device proposed in this utility model;

[0021] Figure 5 This is an enlarged view of point C of the infusion alarm device proposed in this utility model;

[0022] Figure 6 This is a three-dimensional view of the infusion bottle structure of the infusion alarm device proposed in this utility model;

[0023] Figure 7 This is a three-dimensional view of the infusion detection ring structure of the infusion alarm device proposed in this utility model;

[0024] Figure 8 This is a perspective view of the semi-circular fixing clip structure of the infusion alarm device proposed in this utility model;

[0025] Figure 9 This is a three-dimensional view of the limiting block structure of the infusion alarm device proposed in this utility model;

[0026] Figure 10 This is a perspective view of the sliding groove structure of the infusion alarm device proposed in this utility model.

[0027] In the diagram: 1. Infusion stand; 2. Casters; 3. Mounting slot; 4. Mounting shaft; 5. Support arm; 6. Support shaft; 7. Hook; 8. Infusion hanger; 9. Infusion bottle; 10. Infusion detection ring; 11. Infusion tubing; 12. Automatic regulator; 13. Folding shaft; 14. Folding rod; 15. Retractable shaft; 16. Fixing rod; 17. Limiting shaft; 18. Locking block; 19. Limiting hole; 20. Snap-fit ​​shaft; 21. Reusable Velcro; 22. Liquid level sensor 23. Signal transmitter; 24. Signal indicator light; 25. Mounting plate; 26. Rotating groove; 27. Rotating shaft; 28. Semi-circular fixing clamp; 29. ​​Semi-circular fixing hole; 30. Fixing plate; 31. Fixing shaft; 32. Limiting block; 33. Sliding groove; 34. Limiting groove; 35. Snap-fit ​​block; 36. Support frame; 37. Pull rod; 38. Pull plate; 39. Telescopic block; 40. Inclined surface; 41. Limiting spring; 42. Electric push rod; 43. Pressure plate. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0029] Reference Figures 1-10The system includes an infusion stand, with casters fixedly installed on the lower part of the base. An installation groove is provided at the upper end of the infusion stand, and installation shafts are fixedly installed on opposite sides of the inner wall of the installation groove. A support arm is fixedly installed on the arc surface of the installation shaft, and a folding mechanism is provided on the outer side of the support arm. A support shaft is rotatably connected to the lower part of the support arm via a ball bearing, and a hook is fixedly installed on the lower part of the support shaft. An infusion hanger is hung on the upper part of the hook. An infusion bottle is clamped to the inner wall of the infusion hanger, and an infusion detection ring is clamped to the arc surface of the bottle opening. An infusion tubing is inserted into the lower part of the bottle opening, and an automatic adjuster is provided on the outer side of the infusion tubing. The folding mechanism folds the support arm 5, the infusion detection ring 10 detects and transmits liquid level information in the infusion bottle 9, and the automatic adjuster 12 automatically clamps the infusion tubing 11.

[0030] The folding mechanism includes a folding shaft 13, which is fixedly installed on one side of the infusion stand 1. A folding rod 14 is rotatably connected to the arc surface of the folding shaft 13 via a ball bearing. A retraction shaft 15 is fixedly installed on one side surface of the support arm 5. A fixing rod 16 is rotatably connected to the arc surface of the retraction shaft 15 via a ball bearing. Limiting shafts 17 are rotatably connected to the outer surfaces of the folding rod 14 and the fixing rod 16 via ball bearings. Locking blocks 18 are fixedly installed at both ends of the limiting shaft 17. The opposing surfaces of the two locking blocks 18 are pressed against one side of the folding rod 14 and the fixing rod 16 respectively. Limiting holes 19 are also opened on the outer surfaces of the folding rod 14 and the fixing rod 16 respectively. Locking shafts 20 are slidably inserted into the inner sidewalls of the two limiting holes 19.

[0031] By setting the snap-fit ​​shaft 20, the snap-fit ​​shaft 20 can be pulled out from the limiting hole 19, allowing the folding rod 14 and the fixing rod 16 to rotate around the limiting shaft 17. The two locking blocks 18 stably fix the limiting shaft 17, allowing the support arm 5 to rotate downward around the mounting shaft 4, thereby folding the support arm 5, reducing the space occupied by the infusion stand 1 when it is not in use, and preventing personnel from being injured.

[0032] In order to fix the infusion detection ring 10 to the mouth of the infusion bottle 9, reusable Velcro 21 is fixedly installed on the side surfaces of both ends of the infusion detection ring 10. A liquid level sensor 22 is fixedly installed on the outer surface of the infusion detection ring 10. A signal transmitter 23 is fixedly installed on the outer surface of the infusion detection ring 10. A signal indicator light 24 is also fixedly installed on the outer surface of the infusion detection ring 10.

[0033] By setting an infusion detection ring 10, and making the infusion detection ring 10 a transparent soft rubber material, the liquid level sensor 22 on the surface of the infusion detection ring 10 can detect the liquid level in the infusion bottle 9. The infusion detection ring 10 is fixed around the mouth of the infusion bottle 9 by a reusable Velcro 21. The liquid level sensor 22 on the surface of the infusion detection ring 10 is used to check the liquid level in the infusion bottle 9. The liquid level sensor 22 is connected to the PDA through a signal transmitter 23, which can transmit infusion information in the infusion bottle, such as the type of medication and the infusion rate. When the liquid level is detected to be too low, the situation is transmitted to the PDA through the signal transmitter 23, and the signal indicator 24 is activated to flash and alarm the patient and staff.

[0034] The automatic regulator 12 includes a mounting plate 25. One side surface of the mounting plate 25 is in sliding contact with the infusion tubing 11. One end of the mounting plate 25 is provided with a rotating groove 26. The two opposite sides of the rotating groove 26 are rotatably connected to a rotating shaft 27 through ball bearings. A semi-circular fixing clip 28 is fixedly connected to the arc surface of the rotating shaft 27. A semi-circular fixing hole 29 is provided on the outer surface of the semi-circular fixing clip 28.

[0035] By setting a semi-circular fixing clip 28, which can rotate around the rotating shaft 27, and cooperate with the mounting plate 25 to fix the automatic regulator 12 on the outer surface of the infusion tubing 11 that passes through the semi-circular fixing hole 29.

[0036] To ensure the automatic regulator 12 is stably fixed on the infusion tubing 11, a fixing plate 30 is fixedly installed at one end of the mounting plate 25. Fixing shafts 31 are fixedly installed on the opposite surfaces of both fixing plates 30. A limiting block 32 is slidably inserted into the arc surface of the fixing shaft 31. A sliding groove 33 is formed on one side surface of the limiting block 32. The arc surface of the fixing shaft 31 slidably inserts into the sliding groove 33. A limiting groove 34 is formed on the upper part of the limiting block 32. A snap-fit ​​block 35 is fixedly installed on the arc surface of the semi-circular fixing clamp 28. The inner wall of the limiting groove 34 is in contact with the upper surface of the snap-fit ​​block 35. One side of the limiting block 32... A support frame 36 is fixedly installed, and a pull rod 37 is slidably inserted into the outer surface of the support frame 36. A pull plate 38 is fixedly installed at one end of the pull rod 37, and a telescopic block 39 is fixedly installed at the other end of the pull rod 37. The outer surface of the telescopic block 39 is slidably inserted into the outer surface of the limiting block 32. One end of the telescopic block 39 passes through and extends into the interior of the sliding groove 33. One side of the telescopic block 39 is set as an inclined surface 40. One side surface of the telescopic block 39 is pressed against the arc surface of the fixed shaft 31. A limiting spring 41 is fixedly installed on one side surface of the telescopic block 39. One end of the limiting spring 41 is fixedly connected to the inner side of the support frame 36.

[0037] By setting a limiting block 32, the limiting block 32 can slide up and down under the limitation of the sliding groove 33 and the fixed shaft 31, so that the limiting groove 34 on the limiting block 32 is pressed into contact with the snap-fit ​​block 35 on the semi-circular fixing clamp 28, so that the limiting block 32 and the semi-circular fixing clamp 28 are limited and fixed, so that the automatic regulator 12 is stably fixed on the infusion tubing 11. A limiting spring 41 is set so that the telescopic block 39 is stably inserted into the sliding groove 33 on the limiting block 32, so that the telescopic block 39 is pressed into contact with the fixed shaft 31, so that the position of the limiting block 32 is limited and fixed by the telescopic block 39. Move upwards, set the pull plate 38, pull the pull plate 38 to move the pull rod 37 outwards and compress the limit spring 41, drive the telescopic block 39 outwards away from the sliding groove 33, so that the limit block 32 can move upwards to release the squeezing contact of the snap-fit ​​block 35, so that the semi-circular fixing clamp 28 can rotate. After the pull rod 37 is released, the limit spring 41 resets and the telescopic block 39 is reinserted into the fixing groove. Set one side of the telescopic block 39 to be an inclined surface 40, so that the downward movement of the limit block 32 will cause the fixing shaft 31 to contact the inclined surface 40 and squeeze the telescopic block 39 outwards, so that the downward movement of the limit block 32 is not limited by the telescopic block 39.

[0038] In order to achieve automatic clamping of the automatic regulator 12, an electric push rod 42 is fixedly installed on the inner arc side wall of the semi-circular fixed clamp 28. A pressure plate 43 is fixedly installed on the telescopic end of the electric push rod 42. One side surface of the pressure plate 43 is in contact with the arc surface of the infusion tubing 11.

[0039] When the PDA receives the alarm signal transmitted by the signal transmitter 23, it will send a signal to activate the electric push rod 42, causing the pressure plate 43 to squeeze the infusion tubing 11, thereby interrupting the infusion and preventing air from entering the patient's body.

[0040] Working principle: The infusion stand 1 can be easily moved to the patient's side using the casters 2. Then, the reusable Velcro 21 secures the infusion detection ring 10 to the mouth of the infusion bottle 9. The semi-circular fixing clamp 28 is rotated, and the infusion tubing 11 is passed through the semi-circular fixing hole 29. The snap-fit ​​block 35 is inserted into the limiting groove 34 of the limiting block 32. The limiting plate is then pushed to slide, causing the fixing shaft 31 to press against the inclined surface 40 of the telescopic block 39, pushing the telescopic block 39 outward and compressing the limiting spring 41. This allows the limiting block 32 to slide without obstruction from the telescopic block 39, causing the limiting groove 34 to press against the snap-fit ​​block 35. When the limiting block 32 reaches its final position, the limiting spring 41 resets, causing the telescopic block 39 to re-insert into the sliding groove 33. The flat surface of the telescopic block 39 presses against the fixing shaft 31, limiting and fixing the limiting block 32, ensuring the limiting groove 34 is stably in contact with the patient. When the locking block 35 contacts, the automatic regulator 12 is fixed to the infusion tubing 11. When the liquid level in the infusion bottle 9 is lower than the sensor of the infusion detection ring 10, the transmitter transmits this information to the automatic regulator 12 and PDA below the Murphy drip tube. The indicator light receives the signal and changes from green to red. The alarm sounds to remind the patient. After receiving the signal, the automatic regulator 12 activates the electric push rod 42 to push the pressure plate 43 to squeeze the infusion tubing 11, thus closing the infusion tubing 11 to prevent air from entering the body and prevent air embolism. When the infusion stand 1 is not needed, the locking shaft 20 is pulled out from the limiting hole 19, which allows the folding rod 14 and the fixing rod 16 to rotate around the limiting shaft 17. The two locking blocks 18 fix the limiting shaft 17 stably, allowing the support arm 5 to rotate downward around the mounting shaft 4 and fold up the support arm 5 to reduce space occupation.

[0041] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. An infusion alarm device, comprising an infusion stand (1), characterized in that: The base of the infusion stand (1) is fixedly equipped with casters (2), the upper end of the infusion stand (1) is provided with a mounting groove (3), the inner sidewalls of the mounting groove (3) are fixedly equipped with mounting shafts (4), the arc surface of the mounting shaft (4) is fixedly equipped with a support arm (5), the outer side of the support arm (5) is provided with a folding mechanism, the lower part of the support arm (5) is rotatably connected to a support shaft (6) through a ball bearing, the lower part of the support shaft (6) is fixedly equipped with a hook (7), the upper part of the hook (7) is equipped with an infusion hanger (8), the inner sidewall of the infusion hanger (8) is clamped with an infusion bottle (9), the arc surface of the bottle mouth of the infusion bottle (9) is clamped with an infusion detection ring (10), the lower part of the bottle mouth of the infusion bottle (9) is inserted with an infusion hose (11), and the outer side of the infusion hose (11) is provided with an automatic regulator (12). The folding mechanism enables the support arm (5) to be folded. The infusion detection ring (10) enables the detection of the liquid level in the infusion bottle (9) and the transmission of liquid level information. The automatic regulator (12) automatically clamps the infusion tubing (11).

2. The infusion alarm device according to claim 1, characterized in that: The folding mechanism includes a folding shaft (13), which is fixedly installed on one side of the infusion stand (1). The arc surface of the folding shaft (13) is rotatably connected to a folding rod (14) via a ball bearing. A retraction shaft (15) is fixedly installed on one side surface of the support arm (5). A fixing rod (16) is rotatably connected to the arc surface of the retraction shaft (15) via a ball bearing. The outer surfaces of the folding rod (14) and the fixing rod (16) are rotatably connected to a limiting shaft (17) via a ball bearing. Two locking blocks (18) are fixedly installed at both ends of the limiting shaft (17). The opposing surfaces of the two locking blocks (18) are pressed against one side of the folding rod (14) and the fixing rod (16). Limiting holes (19) are also opened on the outer surfaces of the folding rod (14) and the fixing rod (16). A locking shaft (20) is slidably inserted into the inner sidewall of the two limiting holes (19).

3. The infusion alarm device according to claim 1, characterized in that: The two ends of the infusion detection ring (10) are respectively fixedly installed with reusable Velcro (21), the outer surface of the infusion detection ring (10) is fixedly installed with a liquid level sensor (22), the outer surface of the infusion detection ring (10) is fixedly installed with a signal transmitter (23), and the outer surface of the infusion detection ring (10) is also fixedly installed with a signal indicator light (24).

4. The infusion alarm device according to claim 1, characterized in that: The automatic regulator (12) includes a mounting plate (25). One side surface of the mounting plate (25) is in sliding contact with the infusion tubing (11). One end of the mounting plate (25) is provided with a rotating groove (26). The two opposite sides of the rotating groove (26) are rotatably connected to a rotating shaft (27) through ball bearings. A semi-circular fixing clip (28) is fixedly connected to the arc surface of the rotating shaft (27). A semi-circular fixing hole (29) is provided on the outer surface of the semi-circular fixing clip (28).

5. The infusion alarm device according to claim 4, characterized in that: A fixing plate (30) is fixedly installed at one end of the mounting plate (25). A fixing shaft (31) is fixedly installed on the opposite surfaces of the two fixing plates (30). A limiting block (32) is slidably inserted into the arc surface of the fixing shaft (31). A sliding groove (33) is provided on one side surface of the limiting block (32). The arc surface of the fixing shaft (31) is slidably inserted into the sliding groove (33). A limiting groove (34) is provided on the upper part of the limiting block (32). A snap-fit ​​block (35) is fixedly installed on the arc surface of the semi-circular fixing clamp (28). The inner sidewall of the limiting groove (34) is pressed against the upper surface of the snap-fit ​​block (35).

6. The infusion alarm device according to claim 5, characterized in that: A support frame (36) is fixedly installed on one side of the limiting block (32). A pull rod (37) is slidably inserted into the outer surface of the support frame (36). A pull plate (38) is fixedly installed at one end of the pull rod (37). A telescopic block (39) is fixedly installed at the other end of the pull rod (37). The outer surface of the telescopic block (39) is slidably inserted into the outer surface of the limiting block (32). One end of the telescopic block (39) penetrates and extends into the interior of the sliding groove (33). One side of the telescopic block (39) is set as an inclined surface (40). One side surface of the telescopic block (39) is pressed against the arc surface of the fixed shaft (31). A limiting spring (41) is fixedly installed on one side surface of the telescopic block (39). One end of the limiting spring (41) is fixedly connected to the inner side of the support frame (36).

7. The infusion alarm device according to claim 6, characterized in that: An electric push rod (42) is fixedly installed on the inner arc sidewall of the semicircular fixing clamp (28), and a pressure plate (43) is fixedly installed on the telescopic end of the electric push rod (42). One side surface of the pressure plate (43) is pressed into contact with the arc surface of the infusion tubing (11).

Images