An infusion drip rate monitoring device

Abstract

This invention discloses an infusion drip rate monitoring device, relating to the field of medical monitoring equipment technology. It includes a monitoring housing and a mounting base connected within the housing. A connecting plate is rotatably connected to the top of the mounting base. The mounting base and the connecting plate cooperate to form a lever structure. An impact block is vertically slidably mounted on the top of one end of the connecting plate. In this invention, a light receiver captures the electrical signal generated by the droplet blocking light. After being amplified by a signal amplifier, the signal controls a relay switch, causing a battery to power an electromagnet that attracts the impact block. A second return spring assists in its reset. The impact block causes the connecting plate to swing, driving a rotating gear via a first and second actuating plate. The driven rack moves vertically back and forth under the action of a guide rod and the first return spring, moving an indicator needle. When the drip rate is too fast, an alarm sound is emitted by striking a warning plate. This design facilitates automatic drip monitoring.

Description

Technical Field

[0001] This invention relates to the field of medical monitoring equipment technology, specifically to an infusion drip rate monitoring device. Background Technology

[0002] Intravenous infusion is one of the most commonly used drug administration techniques in clinical drug therapy. However, during infusion therapy, due to factors such as the patient's age, cardiac function, physical tolerance, and the different drugs being used, it requires the rich clinical experience of medical staff to effectively control the infusion rate to ensure successful drug treatment. For example, the infusion rate should be slow for the elderly and infants; slow for those with acute or chronic heart failure; fast for those with acute dehydration, shock, or high fever; slow for aminophylline infusion and fast for mannitol infusion. Therefore, rationally controlling the intravenous infusion rate is an important aspect of medical and nursing work and has become an important part of hospital nurse evaluation.

[0003] Currently, hospitals mostly use disposable infusion sets for intravenous infusions, and the drip rate is manually adjusted by medical staff. If the infusion rate changes or the patient needs assistance during the infusion process, the patient's family members must monitor and alert the medical staff to resolve the issue. This results in the need for dedicated personnel to supervise the patient during the infusion, which not only inconveniences the patient's family members but also wastes a lot of the hospital's manpower and resources. Summary of the Invention

[0004] The purpose of this invention is to provide an infusion drip rate monitoring device to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides an infusion drip rate monitoring device, comprising a monitoring housing, a mounting base connected within the monitoring housing, a connecting plate rotatably connected to the top of the mounting base, the mounting base and the connecting plate cooperating to form a lever structure, an impact block vertically slidably disposed at the top of one end of the connecting plate, a counterweight frame connected to the bottom of the other end of the connecting plate, a first actuating plate connected to the end of the connecting plate near the counterweight frame, a rotating gear rotatably connected within the monitoring housing, a second actuating plate connected to the side of the rotating gear near the first actuating plate, the first actuating plate and the second actuating plate abutting against each other, wherein...

[0006] When the connecting plate swings, it drives the rotating gear to rotate by the first actuating plate contacting the second actuating plate.

[0007] A driven rack is meshed on the other side of the rotating gear. An indicator needle is connected to the side of the driven rack away from the rotating gear. Symmetrical warning plates are connected inside the monitoring housing. When the indicator needle moves up and down, it can strike the warning plates to generate a warning sound.

[0008] Furthermore, a mounting shell is connected inside the monitoring housing, and a storage battery is connected inside the mounting shell. An electromagnet is electrically connected to one side of the storage battery, and a second reset spring is connected to the other side of the electromagnet. The other end of the second reset spring is connected to the impact block.

[0009] Furthermore, a drip tube mounting slot is provided inside the monitoring housing, and a symmetrical light source emitter and light receiver are connected inside the monitoring housing. The light source emitter and light receiver are located on both sides of the drip tube mounting slot, respectively. A relay switch is connected inside the monitoring housing, and the relay switch is electrically connected to the light receiver. The light receiver is electrically connected to the battery.

[0010] Furthermore, a fixed shell is connected inside the monitoring housing, and the early warning plate is slidably connected to the fixed shell. A first bidirectional lead screw is rotatably connected inside the fixed shell, and two symmetrical first nuts are threaded onto the first bidirectional lead screw. There are two early warning plates, and the two early warning plates are respectively connected to the two first nuts.

[0011] Furthermore, the counterweight frame includes a counterweight block detachably connected inside the counterweight frame, a transmission screw is rotatably connected inside the counterweight frame, a second nut is threaded onto the transmission screw, one side of the second nut extends into the counterweight frame and is connected to a limiting plate for limiting the position of the counterweight block.

[0012] Furthermore, a guide rod is connected to one side of the driven rack, and the guide rod is slidably connected inside the monitoring housing. A first return spring is connected to both sides of the driven rack, and the other end of the first return spring is connected inside the monitoring housing.

[0013] Furthermore, the monitoring housing is rotatably connected to two symmetrical second bidirectional lead screws, and the second bidirectional lead screws are threaded with two symmetrical limiting clamps, which are used to fix the infusion tube.

[0014] Furthermore, one end of the second bidirectional lead screw is connected to a synchronous pulley, and a synchronous belt drives between the two synchronous pulleys.

[0015] Furthermore, a signal amplifier is connected inside the monitoring housing, and the signal amplifier is electrically connected to the light receiver and the relay switch respectively.

[0016] Furthermore, a sound amplifier is connected to the top of the monitoring housing.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The light receiver captures the electrical signal generated by the droplets blocking the light. After being amplified by the signal amplifier, it controls the relay switch, which powers the electromagnet to attract the impact block. The second reset spring assists in resetting the impact block. The impact block drives the connecting plate to swing, which in turn drives the gear to rotate via the first and second actuating plates. The driven rack moves back and forth vertically under the action of the guide rod and the first reset spring, moving the indicator needle. When the dripping speed is too fast, it can strike the warning plate to emit an alarm sound. This setting facilitates automatic drip monitoring.

[0019] 2. Rotating the first bidirectional lead screw causes the two threaded nuts to slide on the first limit rod, moving the two warning plates on the fixed housing. Medical staff can customize the drip rate warning range. After the indicator needle strikes the warning plate, the sound amplifier amplifies the warning volume.

[0020] 3. Rotate the transmission screw inside the counterweight frame. The second nut slides within the limiting groove, causing the limiting plate to move and adjusting the limiting position of the counterweight block. This changes the lever structure's response to the drip rate impact force. This adjustment can be tailored to different patients' tolerance to drip rates, avoiding monitoring errors.

[0021] 4. By rotating the second bidirectional lead screw, the linkage between the synchronous pulley and the synchronous belt drives the two mutually symmetrical limit clamps to slide in opposite directions on the second limit rod, which can quickly and evenly clamp the infusion tube. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a side view of the present invention;

[0024] Figure 3 This is a cross-sectional view of the present invention;

[0025] Figure 4 This is a plan view of the present invention;

[0026] Figure 5 For the present invention Figure 2 Enlarged view of the structure at point A in the middle;

[0027] Figure 6 For the present invention Figure 4 Enlarged view of the structure at point B;

[0028] Figure 7 For the present invention Figure 4 Enlarged view of the structure at point C.

[0029] In the diagram: 1. Monitoring housing; 2. Mounting base; 3. Connecting plate; 4. Impact block; 5. First actuating plate; 6. Second actuating plate; 7. Rotating gear; 8. Driven rack; 9. Indicator needle; 10. Counterweight frame; 11. Warning plate; 12. Battery; 13. Electromagnet; 14. Second return spring; 15. Light source emitter; 16. Light receiver; 17. Relay switch; 18. First bidirectional lead screw; 19. First nut; 20. Counterweight block; 21. Transmission lead screw; 22. Second nut; 23. Limiting plate; 24. Second bidirectional lead screw; 25. Limiting clamp; 26. Synchronous pulley; 27. Synchronous belt; 28. Signal amplifier; 29. ​​Sound amplifier; 30. Restraint plate; 31. Indicator plate; 32. First limiting rod; 33. Second limiting rod; 34. First return spring. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figure 1-7 This invention provides a technical solution: an infusion drip rate monitoring device, comprising a monitoring housing 1, a mounting base 2 connected inside the monitoring housing 1, a connecting plate 3 rotatably connected to the top of the mounting base 2, the mounting base 2 and the connecting plate 3 working together to form a lever structure, an impact block 4 vertically slidingly disposed on the top of one end of the connecting plate 3, a counterweight frame 10 connected to the bottom of the other end of the connecting plate 3, a first actuating plate 5 connected to the end of the connecting plate 3 near the counterweight frame 10, a rotating gear 7 rotatably connected inside the monitoring housing 1, a second actuating plate 6 connected to the side of the rotating gear 7 near the first actuating plate 5, the first actuating plate 5 and the second actuating plate 6 abutting against each other, wherein...

[0032] When the connecting plate 3 swings, it drives the rotating gear 7 to rotate by contacting the second detour plate 6 with the first detour plate 5.

[0033] A driven rack 8 is meshed on the other side of the rotating gear 7. An indicator needle 9 is connected to the side of the driven rack 8 away from the rotating gear 7. Symmetrical warning plates 11 are connected inside the monitoring housing 1. When the indicator needle 9 moves up and down, it can strike the warning plate 11 to produce a warning sound.

[0034] In practice, the impact block 4 slides vertically, causing the connecting plate 3 to swing. Since the mounting base 2 and the connecting plate 3 form a lever structure, when the connecting plate 3 swings, its first actuating plate 5 at one end abuts against the second actuating plate 6 on one side of the rotating gear 7, driving the rotating gear 7 to rotate. The rotation of the rotating gear 7 causes the meshing driven rack 8 to move up and down, and the indicator needle 9 on the driven rack 8 also moves accordingly. When the infusion drip rate is too fast, the indicator needle 9 moves and strikes the warning plate 11, producing a warning sound. This setting achieves automatic monitoring and warning of the infusion drip rate. By mechanically transmitting the infusion drip rate into the movement of the indicator needle 9 and the warning, constant monitoring by a dedicated person is unnecessary, saving hospital manpower and resources.

[0035] Please see Figure 1-7 The monitoring housing 1 has a drip tube mounting slot. A light source emitter 15 and a light receiver 16 are connected symmetrically inside the monitoring housing 1. The light source emitter 15 and the light receiver 16 are located on both sides of the drip tube mounting slot. A relay switch 17 is connected inside the monitoring housing 1. The relay switch 17 is electrically connected to the light receiver 16. The light receiver 16 is electrically connected to the battery 12. A mounting shell is connected inside the monitoring housing 1. The battery 12 is connected inside the mounting shell. An electromagnet 13 is electrically connected to one side of the battery 12. A second reset spring 14 is connected to the other side of the electromagnet 13. The other end of the second reset spring 14 is connected to the impact block 4.

[0036] In practice, the light source emitter 15 and the light receiver 16 are located on both sides of the drip tube mounting groove. When a droplet passes through the infusion tube, the droplet blocks the light, causing the light receiver 16 to receive a change in the light signal, generating an electrical signal. This electrical signal is amplified by the signal amplifier 28, controlling the relay switch 17 to operate, which in turn controls the power supply to the battery 12 and the electromagnet 13, thus providing auxiliary control for the impact block 4. When the light receiver 16 detects a droplet passing through the infusion tube, it generates an electrical signal, which, through the circuit control, closes the relay switch 17, energizing the battery 12. The electromagnet 13 then generates magnetism to attract the impact block 4, simultaneously stretching the second return spring 14. After the droplet passes through, the relay switch 17 opens, the electromagnet 13 loses its magnetism, and the second return spring 14 pulls the impact block 4 back to its original position.

[0037] Please see Figure 1-7 The monitoring housing 1 is connected to a fixed shell. The warning plate 11 is slidably connected to the fixed shell. The fixed shell is rotatably connected to a first bidirectional lead screw 18. The first bidirectional lead screw 18 is threaded with two symmetrical first nuts 19. There are two warning plates 11, and the two warning plates 11 are respectively connected to the two first nuts 19.

[0038] It should be noted that a first limiting rod 32 is connected inside the fixed shell, and a first nut 19 is slidably connected to the first limiting rod 32. The first limiting rod 32 can limit and guide the sliding of the first nut 19. An indicator plate 31 is connected to one side of the fixed shell. Both the indicator plate 31 and the indicator needle 9 are coated with fluorescent powder. One side of the monitoring shell 1 is made of transparent acrylic sheet, which makes it convenient for users to observe the indicator plate 31 and the indicator needle 9 and judge the dripping speed.

[0039] In practice, rotating the first bidirectional lead screw 18 causes the two first nuts 19 connected to it to move in the opposite direction along the lead screw, which in turn causes the warning plates 11 connected to the first nuts 19 to slide on the fixed shell, thereby adjusting the distance between the two warning plates 11. The range of the indicator needle 9 triggering the warning can be set according to different infusion needs. This setting allows medical staff to flexibly adjust the warning range according to factors such as the patient's age, condition, and drug characteristics, changing the single and fixed warning mode of traditional infusion devices and enabling the device to adapt to diverse clinical needs.

[0040] Please see Figure 1-7 The counterweight frame 10 includes a counterweight block 20 detachably connected inside the counterweight frame 10. A transmission screw 21 is rotatably connected inside the counterweight frame 10. A second nut 22 is threaded onto the transmission screw 21. One side of the second nut 22 extends into the counterweight frame 10 and is connected to a limiting plate 23 that limits the counterweight block 20.

[0041] It should be noted that a limiting groove is provided on one side of the counterweight frame 10 for the second nut 22 to slide.

[0042] In practice, rotating the transmission screw 21 causes the second nut 22, which is threaded to it, to move the limiting plate 23, thereby adjusting the limiting position of the counterweight block 20 and adjusting the weight of the counterweight frame 10. This setting can be used to address special circumstances during infusion for different patients, such as differences in patients' tolerance to drip rate. In such cases, the counterweight and elasticity of the counterweight frame 10 can be adjusted to change the lever structure's response to the impact force of the infusion drip. This avoids the problem of inaccurate drip rate monitoring due to individual patient differences, allowing the device to adapt to different infusion scenarios.

[0043] Please see Figure 1-7 A guide rod is connected to one side of the driven rack 8, and the guide rod is slidably connected inside the monitoring housing 1. A first return spring 34 is connected to both sides of the driven rack 8, and the other end of the first return spring 34 is connected inside the monitoring housing 1.

[0044] In practice, when the driven rack 8 moves up and down under the drive of the rotating gear 7, the guide rod slides inside the monitoring housing 1 to provide guidance for the driven rack 8 and prevent it from deviating; the first reset springs 34 on both sides provide reset force when the driven rack 8 moves, so that it can return to its original position after the dripping speed changes and stops.

[0045] Please see Figure 1-7 The monitoring housing 1 has two symmetrically connected second bidirectional lead screws 24, and two symmetrically connected limit clamps 25 are threaded on the second bidirectional lead screws 24. The limit clamps 25 are used to fix the infusion tube.

[0046] It should be noted that a second limiting rod 33 is connected inside the monitoring housing 1, and a limiting clamp 25 is slidably connected to the second limiting rod 33. A restraining plate 30 is hinged to the monitoring housing 1 to further fix the infusion tube.

[0047] In practice, rotating the second bidirectional lead screw 24 causes the two limit clamps 25 connected to it to move in the opposite direction along the lead screw, thereby clamping or releasing the infusion tube. This setting facilitates fixing the device to the infusion tube and ensures the accuracy of monitoring.

[0048] Please see Figure 1-7 One end of the second bidirectional lead screw 24 is connected to a synchronous pulley 26, and a synchronous belt 27 is connected between the two synchronous pulleys 26 for transmission.

[0049] In practice, when one of the second bidirectional lead screws 24 is rotated, the synchronous wheel 26 connected to one end of it rotates accordingly. The synchronous belt 27 drives the other synchronous wheel 26 and the second bidirectional lead screw 24 to rotate synchronously, ensuring that the limit clamps 25 on the two second bidirectional lead screws 24 move synchronously and clamp or release the infusion tube evenly.

[0050] Please see Figure 1-7 The monitoring housing 1 contains a signal amplifier 28, which is electrically connected to the light receiver 16 and the relay switch 17.

[0051] In practice, the electrical signal generated by the light receiver 16 is relatively weak. The signal amplifier 28 amplifies it, and the enhanced electrical signal can more stably and reliably control the operation of the relay switch 17, ensuring that components such as the electromagnet 13 work normally.

[0052] Please see Figure 1-7 A sound amplifier 29 is connected to the top of the monitoring housing 1.

[0053] In practice, the warning sound generated by the indicator needle 9 striking the warning board 11 is amplified by the sound amplifier 29, making the warning sound louder and able to attract the attention of medical staff and patients in a timely manner.

[0054] Working principle: When using this infusion drip rate monitoring device, first place the infusion tube in the drip tube mounting slot inside the monitoring housing 1. Rotate one of the second bidirectional lead screws 24, and the synchronous pulley 26 at one end will rotate accordingly. Through the synchronous belt 27, the other synchronous pulley 26 and the second bidirectional lead screw 24 will rotate synchronously. Since the second bidirectional lead screw 24 is threaded with two mutually symmetrical limiting clamps 25, and the limiting clamps 25 slide on the second limiting rod 33, the two limiting clamps 25 will move in opposite directions along the lead screw, thereby uniformly clamping the infusion tube and ensuring that the device is stably installed on the infusion tube.

[0055] During intravenous infusion, when a droplet passes through the infusion tube, it blocks light, causing a change in the light signal received by the light receiver 16, thus generating an electrical signal. However, this electrical signal is weak and needs to be amplified by the signal amplifier 28. The amplified electrical signal controls the relay switch 17 to operate. When the light receiver 16 detects the droplet passing through, the relay switch 17 closes, the battery 12 is powered on, the electromagnet 13 generates magnetism to attract the impact block 4, and simultaneously stretches the second reset spring 14. When the droplet passes through, the relay switch 17 opens, the electromagnet 13 loses its magnetism, and the second reset spring 14 pulls the impact block 4 back to its original position.

[0056] The reciprocating impact block 4 slides vertically at the top of one end of the connecting plate 3, thereby causing the connecting plate 3 to swing. Because the mounting base 2 and the connecting plate 3 cooperate to form a lever structure, when the connecting plate 3 swings, its first actuating plate 5 near the counterweight frame 10 will abut against the second actuating plate 6 on one side of the rotating gear 7, driving the rotating gear 7 to rotate. When the rotating gear 7 rotates, the driven rack 8 meshing with its other side will move up and down. The guide rod connected to one side of the driven rack 8 slides inside the monitoring housing 1, providing guidance for the driven rack 8 and preventing it from deviating. At the same time, the first return springs 34 on both sides of the driven rack 8 provide a return force when it moves. The indicator needle 9 connected to the driven rack 8 also moves up and down accordingly. By observing the position of the indicator needle 9 relative to the indicator plate 31, since both the indicator plate 31 and the indicator needle 9 are coated with fluorescent powder, and one side of the monitoring housing 1 is made of transparent acrylic sheet, the user can easily judge the dripping speed.

[0057] Medical staff can rotate the first bidirectional lead screw 18 according to factors such as the patient's age, condition, and drug characteristics. Because the two first nuts 19 threaded onto the first bidirectional lead screw 18 slide on the first limit rod 32, the two first nuts 19 will move in the opposite direction along the lead screw, causing the two warning plates 11 connected to them to slide on the fixed shell, thereby adjusting the distance between the two warning plates 11 and setting the range within which the indicator needle 9 triggers an alarm. When the infusion drip rate is too fast, the indicator needle 9 moves and strikes the warning plate 11, generating an alarm sound. The alarm sound is amplified by the sound amplifier 29, making the alarm sound louder and promptly attracting the attention of medical staff and patients.

[0058] To accommodate the different tolerances of different patients to the drip rate, the transmission screw 21 inside the rotatable counterweight frame 10 can be rotated, and the second nut 22 connected to it can slide in the limiting groove on one side of the counterweight frame 10, thereby driving the limiting plate 23 to move, thereby adjusting the limiting position of the counterweight block 20 and realizing the adjustment of the overall counterweight and elasticity of the counterweight frame 10.

Claims

1. An infusion drip rate monitoring device, comprising a monitoring housing (1), characterized in that, The system includes a mounting base (2) connected inside the monitoring housing (1), a connecting plate (3) rotatably connected to the top of the mounting base (2), the mounting base (2) and the connecting plate (3) working together to form a lever structure, an impact block (4) vertically slidingly disposed on the top of one end of the connecting plate (3), a counterweight frame (10) connected to the bottom of one end of the connecting plate (3), a first actuating plate (5) connected to the other end of the connecting plate (3) near the counterweight frame (10), a rotating gear (7) rotatably connected inside the monitoring housing (1), a second actuating plate (6) connected to the side of the rotating gear (7) near the first actuating plate (5), the first actuating plate (5) and the second actuating plate (6) abutting against each other, wherein, When the connecting plate (3) swings, it drives the rotating gear (7) to rotate by contacting the second actuating plate (6) through the first actuating plate (5). A driven rack (8) is meshed on the other side of the rotating gear (7). An indicator needle (9) is connected to the side of the driven rack (8) away from the rotating gear (7). A symmetrical warning plate (11) is connected inside the monitoring housing (1). When the indicator needle (9) moves up and down, it can strike the warning plate (11) to generate a warning sound. A mounting shell is connected inside the monitoring housing (1). A storage battery (12) is connected inside the mounting shell. An electromagnet (13) is electrically connected to one side of the storage battery (12). A second return spring (14) is connected to the other side of the electromagnet (13). The other end of the second reset spring (14) is connected to the impact block (4); a drip tube mounting groove is provided inside the monitoring housing (1); a light source emitter (15) and a light receiver (16) are connected inside the monitoring housing (1); the light source emitter (15) and the light receiver (16) are respectively located on both sides of the drip tube mounting groove; a relay switch (17) is connected inside the monitoring housing (1); the relay switch (17) is electrically connected to the light receiver (16); and the light receiver (16) is electrically connected to the battery (12).

2. The infusion drip rate monitoring device as described in claim 1, characterized in that: The monitoring housing (1) is connected to a fixed shell. The warning plate (11) is slidably connected to the fixed shell. The fixed shell is rotatably connected to a first bidirectional screw (18). The first bidirectional screw (18) is threaded with two symmetrical first nuts (19). There are two warning plates (11). The two warning plates (11) are respectively connected to the two first nuts (19).

3. The infusion drip rate monitoring device as described in claim 1, characterized in that: The counterweight frame (10) includes a counterweight block (20) detachably connected inside the counterweight frame (10). A transmission screw (21) is rotatably connected inside the counterweight frame (10). A second nut (22) is threaded onto the transmission screw (21). One side of the second nut (22) extends into the first return spring (34) and is connected to a limiting plate (23) that limits the counterweight block (20).

4. The infusion drip rate monitoring device as described in claim 1, characterized in that: A guide rod is connected to one side of the driven rack (8), and the guide rod is slidably connected inside the monitoring housing (1). A first return spring (34) is connected to both sides of the driven rack (8), and the other end of the first return spring (34) is connected inside the monitoring housing (1).

5. The infusion drip rate monitoring device as described in claim 1, characterized in that: The monitoring housing (1) is rotatably connected to two symmetrical second bidirectional screws (24), and the second bidirectional screws (24) are threaded with two symmetrical limiting clamps (25), which are used to fix the infusion tube.

6. The infusion drip rate monitoring device as described in claim 5, characterized in that: One end of the second bidirectional lead screw (24) is connected to a synchronous pulley (26), and a synchronous belt (27) is connected between the two synchronous pulleys (26).

7. The infusion drip rate monitoring device as described in claim 1, characterized in that: The monitoring housing (1) is equipped with a signal amplifier (28), which is electrically connected to the light receiver (16) and the relay switch (17).

8. The infusion drip rate monitoring device as described in claim 1, characterized in that: A sound amplifier (29) is connected to the top of the monitoring housing (1).

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