Infusion speed control alarm capable of preventing self-adjustment of patient and application control method of infusion speed control alarm

Abstract

The invention relates to the technical field of infusion speed control alarms, in particular to an infusion speed control alarm capable of preventing self-adjustment of a patient. Comprising a shell, a containing groove formed in the back face of the shell and used for containing an infusion tube, and an extruding device arranged in the shell and used for extruding the infusion tube in the containing groove. The infrared detection devices are arranged in the shell, located on the two sides of the bottom end of the containing groove and used for detecting the number of drops of liquid medicine in an infusion tube and the dripping time of the liquid medicine; the infrared detection devices are arranged in the shell and used for receiving drop number signals and dripping time signals of the infrared detection devices and calculating the dripping completion of the liquid medicine in a medicine bottle according to the drop number signals and the dripping time signals; the display screen which is in signal connection with the calculation main board and is used for displaying the real-time flow velocity is arranged outside the shell, and the total time when liquid medicine in the medicine bottle drips is calculated through the calculation main board and displayed on the display screen, so that a nurse can allocate own time according to data displayed on the display screen; and a nurse can replace the medicine bottle in time when dripping of the medicine bottle is completed.

Description

Technical Field

[0001] The present application relates to the technical field of infusion rate control alarms, and in particular to an infusion rate control alarm for preventing patients from self-adjusting and an application control method thereof. Background Art

[0002] The infusion speed control alarm is designed according to the law of repeated dressing changes during infusion, mainly for the blind, intensive care, lonely elderly, mobility-impaired, long-term infusion or bedridden patients. It is an electronic device for monitoring infusion and empty drop prompting. Its main structure includes a single-chip microcomputer, a sensor clamp, a manual switch and a buzzer. Its usage is: use the sensor clamp to clamp the infusion tube, so that the diameter of the clamped part of the infusion tube becomes narrow, so that the medicine drops drop by drop when passing through the clamped part to complete the speed control. If no liquid flows through the clamped part of the infusion tube, the sensor clamp will activate the buzzer to alarm, reminding medical staff to change the medicine bottle for the patient.

[0003] However, in the prior art, the alarm can only be activated after the liquid flow of the medicine bottle is completed. This means that if the nurse is far away from the alarm area, the nurse cannot hear the buzzer alarm immediately. At this time, negative pressure is generated inside the empty medicine bottle, causing blood reflux in the patient. For this reason, the present application proposes an infusion speed control alarm that prevents patients from self-adjusting and an application control method thereof, which is used to display the time when the current medicine bottle dripping is completed, so as to facilitate the nurse to allocate her own time and ensure that the nurse is near the patient and can replace the medicine bottle in time when the medicine bottle dripping is completed. Summary of the invention

[0004] In view of the shortcomings of the existing technology, the purpose of this application is to provide an infusion speed control alarm and its application control method that can prevent patients from self-adjusting, which is used to display the time when the current medicine bottle has finished dripping, so as to facilitate nurses to adjust their own time and ensure that the nurse is near the patient and can replace the medicine bottle in time when the medicine bottle has finished dripping.

[0005] The above-mentioned purpose of the present application is achieved through the following technical solutions: an infusion speed control alarm for preventing patients from self-adjusting, comprising a shell, a placement slot for placing an infusion tube opened on the back of the shell, a squeezing device arranged inside the shell for squeezing the infusion tube in the placement slot, an infrared detection device arranged inside the shell on both sides of the bottom end of the placement slot and used to detect the number of drops of medicine in the infusion tube and the dripping time of the medicine, and a calculation main board arranged inside the shell for receiving the drop number signal and the dripping time signal of the infrared detection device and calculating the total time for the medicine bottle to complete dripping according to the drop number signal and the dripping time signal, and a display screen is provided on the outside of the shell, which is connected to the calculation main board by signal and is used to display the real-time flow rate.

[0006] Furthermore, the calculation mainboard calculates the total time it takes for the medicine bottle liquid to drip, using the formula: total amount of medicine liquid ÷ (number of drops × mass of droplets ÷ dripping time).

[0007] By adopting the above technical solution, the nurse places the infusion tube in the placement slot, and then squeezes the infusion tube with the squeezing device, and then inputs the data of the droplet mass and the total amount of liquid medicine into the calculation main board through the display screen, and then starts the infrared detection device, and then connects the infusion tube to the medicine bottle. At this time, the infrared detection device detects the number of drops of liquid medicine in the infusion tube and the dripping time of the liquid medicine, and sends the drop number signal and the dripping time signal to the calculation main board. The calculation main board calculates the total time for the liquid medicine in the medicine bottle to drip through the formula and displays it on the display screen. For example: the droplet mass input by the nurse is The amount is 0.2ml, the total amount of medicine is 500ml, the number of drops of medicine in the infusion tube detected by the infrared detection device and the dripping time of the medicine are 3 drops per second, then according to the formula: 500÷(3*0.2÷1)=833, it can be known that the dripping of the medicine bottle will be completed after 833 seconds, so the real-time flow rate displayed on the display is 0.6ml per second, and the dripping will be completed after 13 minutes and 53 seconds. In this way, the nurse can allocate her own time according to the data displayed on the display, thereby ensuring that the nurse is near the patient when the dripping of the medicine bottle is completed and can replace the medicine bottle in time.

[0008] Furthermore, the computing mainboard includes a computing module for calculating the total time required for the liquid medicine to drip and a circulation module for acquiring data from the computing module and calculating the changed total amount of liquid medicine data based on the data. The calculation formula of the circulation module is: total amount of liquid medicine - (number of drops × mass of droplets ÷ dripping time). After the circulation module calculates the total amount of liquid medicine, it will send the calculated total amount of liquid medicine data to the computing module. The circulation module calculates once per second.

[0009] By adopting the above technical solution, although the setting of the calculation main board allows the nurse to know the time when the medicine liquid is completed dripping, if the nurse forgets to go back and watch the display screen again, since the data of the total amount of medicine liquid has not changed, the data displayed on the display screen at this time is still a real-time flow rate of 0.6ml per second, and the dripping will be completed after 13 minutes and 53 seconds, causing the nurse to observe wrong data. The setting of the circulation module solves this technical problem. Through the setting of the circulation module, when the calculation main board is started, the calculation module completes the calculation and sends the data to the display screen. At the same time, the circulation module obtains the data of the calculation module and calculates according to the data of the calculation module. After the calculation is completed, the changed total amount of medicine liquid data is sent to the calculation module. The calculation module recalculates the total time when the medicine bottle medicine liquid drips according to the changed total amount of medicine liquid data, so that the data displayed on the display screen can display the total time when the medicine bottle medicine liquid drips in real time. For example: the droplet mass input by the nurse is 0.2ml , the total amount of liquid medicine is 500ml, the number of drops of liquid medicine in the infusion tube detected by the infrared detection device and the dripping time of the liquid medicine are 3 drops per second, according to the formula of the calculation module, it is obtained that: 500÷(3*0.2÷1)=833, so the real-time flow rate displayed on the display screen is 0.6ml per second, and the dripping will be completed after 13 minutes and 53 seconds. At the same time, the circulation module obtains the data of the calculation module, and calculates according to the data of the calculation module. According to the formula of the circulation module, 500-(3*0.2÷1)=499.4 is obtained, and then the circulation module sends 499.4 of the total amount of liquid medicine data to the calculation module. The calculation module calculates again according to its own formula: 499.4÷(3*0.2÷1)=832, at this time, the real-time flow rate displayed on the display screen is 0.6ml per second, and the dripping will be completed after 13 minutes and 52 seconds. In this way, if the nurse forgets the time when the liquid medicine is dripped, when she goes back to watch the display screen again, she can also know the exact time when the liquid medicine is dripped.

[0010] Furthermore, the extrusion device includes a slide groove opened inside the shell at one side of the placement groove, a connecting groove opened on the side of the placement groove close to the slide groove and connected to the inside of the shell, and an extrusion plate slidably connected to the inside of the shell through the slide groove, one end of the extrusion plate close to the placement groove extends into the placement groove through the connecting groove, and the upper and lower ends of the slide groove are provided with limiting grooves connected to the slide groove, the limiting groove is provided with a plurality of limiting grooves and the limiting grooves at the upper and lower ends of the slide groove are staggered, each limiting groove corresponds to a different flow rate and droplet mass, and the outside of the shell is provided with openings corresponding to the slide groove and the limiting groove, and the end of the extrusion plate away from the placement groove is provided with a push rod that passes through the extrusion plate and extends into the slide groove, and the other end of the push rod extends out of the shell through the opening.

[0011] By adopting the above technical solution, a plurality of limit grooves are provided and the limit grooves at the upper and lower ends are staggered so that the distance between each limit groove and the placement groove is different. The limit groove farther away from the placement groove has a faster corresponding flow rate and a greater droplet mass, so that the nurse can drive the extrusion plate to slide into different limit grooves by the push rod so that the nurse can adjust the flow rate and droplet mass of the infusion tube.

[0012] Furthermore, the end surface of one end of the extrusion plate located in the placement groove is an arc portion.

[0013] By adopting the above technical solution, the arc portion allows the arc surface of the arc portion of the extrusion plate to abut against the infusion tube and swing up and down more smoothly when the nurse slides the push rod into different limit grooves, thereby making it more convenient to move the push rod into different limit grooves.

[0014] Furthermore, a fixing device for fixing the push rod is provided in the plurality of limit grooves and in the end of the push rod extending into the slide groove.

[0015] Furthermore, the fixing device includes a plurality of electromagnets respectively arranged in a plurality of limit grooves and a magnetic contact arranged at the end of the push rod extending into one end of the slide groove, and an on-off switch for starting the electromagnet is provided outside the shell.

[0016] By adopting the above technical solution, although the setting of the squeezing device makes it more convenient for nurses to adjust the flow rate and droplet mass of the infusion tube, some patients may be bored during the infusion and may play with the infusion speed control alarm, and may accidentally touch the push rod, resulting in changes in the mass and flow rate of the droplets. At this time, the data calculated by the computing motherboard will be wrong. The setting of the fixing device solves this technical problem. Through the setting of the fixing device, when the nurse has adjusted the flow rate and droplet mass of the infusion tube, the electromagnet is turned on by the on-off switch, so that the electromagnet adsorbs the push rod through the magnetic contact, thereby preventing the patient from accidentally touching the push rod and causing the push rod to move.

[0017] Furthermore, the infrared detection device includes two infrared transmitters and an infrared receiver arranged in a shell and respectively located on both sides of the placement slot. A through hole corresponding to the output surface of the infrared transmitter and the output surface of the infrared receiver is opened in the shell, and the through hole passes through the side walls on both sides of the placement slot.

[0018] By adopting the above technical solution, infrared rays are emitted from the infrared transmitter to the infrared receiver. When the liquid medicine drops, the droplets will block the infrared rays of the infrared transmitter. The infrared receiver can calculate the droplet dripping speed and the number of droplets per second according to the blocking time, and then send them to the computing mainboard.

[0019] Furthermore, a buzzer whose signal is connected to an infrared receiver is provided in the shell, and the infrared receiver will send a start signal to the buzzer if it continuously receives infrared rays from the infrared transmitter within 3 seconds.

[0020] By adopting the above technical solution, the buzzer will sound an alarm after the medicine liquid has finished dripping, so as to remind the nearby nurses to replace the medicine bottle.

[0021] An application control method of an infusion speed control alarm for preventing patients from self-adjusting in the above technical solution comprises the following steps:

[0022] S1. Place the infusion tube in the placement slot;

[0023] S2, hold the push rod and push the squeezing plate in the direction of the placement slot, so that the squeezing plate squeezes the infusion tube, and then slide the push rod to the corresponding limit slot according to the patient's condition;

[0024] S3, inputting the total amount of liquid medicine and the mass of liquid droplets into the calculation main board through the display screen;

[0025] S4. Connect the infusion tube to the medicine bottle, and then start the computing mainboard so that the display screen displays the current real-time flow rate of the droplets and the total time it takes for the droplets in the medicine bottle to be completed.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. Through the setting of the computing main board, the squeezing device and the infrared detection device, the infusion tube is placed in the placement slot, and then the squeezing device is used to squeeze the infusion tube, and then the data of the droplet mass and the total amount of the medicine liquid are input into the computing main board through the display screen, and then the infrared detection device is started, and then the infusion tube is connected to the medicine bottle. At this time, the infrared detection device detects the number of drops of medicine liquid in the infusion tube and the dripping time of the medicine liquid, and sends the drop number signal and the dripping time signal to the computing main board. The computing main board calculates the total time for the medicine bottle to drip through the formula and displays it on the display screen. In this way, the nurse can allocate his own time according to the data displayed on the display screen, so as to achieve the purpose of ensuring that the nurse is near the patient and can replace the medicine bottle in time when the dripping of the medicine bottle is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the embodiment;

[0029] Figure 2 It is a detailed structural view of the shell;

[0030] Figure 3 It is a detailed structural view of the extrusion device;

[0031] Figure 4 It is a schematic diagram of the control system structure of the present invention;

[0032] Figure 5 is a flow chart of the startup detection flow rate of the present invention;

[0033] Figure 6 It is a logical schematic diagram of the dripping speed detection alarm of the present invention;

[0034] Figure 7 It is a logical schematic diagram of the working mode of regulating flow rate of the present invention.

[0035] Figure numerals: 1. Shell; 10. Placement slot; 11. Display screen; 2. Extrusion device; 20. Slide slot; 21. Extrusion plate; 22. Limiting slot; 23. Push rod; 24. Arc portion; 3. Infrared detection device; 30. Infrared transmitter; 31. Infrared receiver; 4. Computer motherboard; 5. Fixing device; 50. Electromagnet; 51. Magnetic contact; 6. Buzzer. DETAILED DESCRIPTION

[0036] The present application is further described in detail below in conjunction with the accompanying drawings.

[0037] Example, see Figure 1 , Figure 2 as well as Figure 3 , an infusion rate control alarm for preventing patients from self-adjusting, the alarm body is composed of a shell 1, a placement slot 10 specially designed for placing an infusion tube is opened on the back of the shell 1, and a set of squeezing devices 2 is arranged inside the shell 1, and the squeezing device 2 can accurately squeeze the infusion tube placed in the placement slot 10, thereby realizing preliminary regulation of the infusion flow rate.

[0038] Furthermore, a set of infrared detection devices 3 are installed inside the housing 1 and on both sides of the bottom of the placement slot 10. This set of infrared detection devices 3 can accurately detect the number of drops of liquid medicine in the infusion tube and the dripping time of each drop of liquid medicine. This information is crucial for subsequent calculations.

[0039] The core component of the alarm, namely, the computing mainboard 4, is installed inside the shell 1. The computing mainboard 4 can not only receive the drop number signal and the drop time signal from the infrared detection device 3, but also calculate the estimated total time for the entire medicine bottle to drop according to these signals, combined with the pre-input drop mass and total amount of liquid medicine data, through a formula: total amount of liquid medicine ÷ (number of drops × drop mass ÷ drop time).

[0040] In order to allow the nurse to grasp the progress of the infusion in real time, a display screen 11 is also provided on the outside of the housing 1. This display screen 11 is connected to the signal of the computing motherboard 4, and can instantly display the current infusion flow rate and the estimated completion time of the infusion. The nurse only needs to perform a few simple operations: properly place the infusion tube in the placement slot 10, use the squeezing device 2 to squeeze it appropriately, and then input the specific values ​​of the droplet mass and the total amount of the liquid medicine through the display screen 11. Next, start the infrared detection device 3 and connect the infusion tube to the medicine bottle. At this time, the infrared detection device 3 begins to record the dripping of each drop of liquid medicine, and feeds these data back to the computing motherboard 4 in real time.

[0041] Take a typical operation as an example: suppose the droplet mass input by the nurse is 0.2 ml, the total amount of liquid medicine is 500 ml, and the infrared detection device 3 detects the number of drops of liquid medicine in the infusion tube and the dripping time of the liquid medicine is 3 drops per second. According to the formula: 500÷(3*0.2÷1)=833, it can be concluded that the total estimated time for the liquid medicine to drip is 833 seconds. This means that the display screen 11 will display the current infusion flow rate of 0.6 ml per second in real time, and at the same time display that the bottle will drip after about 13 minutes and 53 seconds.

[0042] Through this design, nurses can arrange their working hours more flexibly, ensuring that they can be at the patient's side in time when the medicine bottle is about to drip, and be fully prepared for replacing the medicine bottle. This setting not only improves the safety of the infusion process, but also greatly reduces the workload of nurses, truly realizing humanized and intelligent medical care.

[0043] The circuit connections between various electronic facilities and the main board are as follows Figure 4 As shown. In this embodiment, the hardware selection of each electronic device is not limited. For example, the computing motherboard can use a single-chip microcomputer of the STM32 system. The infrared transmitter and infrared receiver of the infrared detection device are conventional infrared devices. The display screen, battery, contact switch, etc. can be selected by themselves, as long as they can meet the application functions described in the present invention. The model, etc. are not limited in this embodiment.

[0044] In order to solve the problem that the nurse may observe the wrong completion time data of the dripping of the liquid medicine due to forgetting halfway, this embodiment makes a more detailed setting for the calculation motherboard 4. The calculation motherboard 4 not only includes a calculation module for preliminarily calculating the total completion time of the dripping of the liquid medicine, but also sets a circulation module. The main responsibility of this circulation module is to obtain the output data of the calculation module in real time, and further accurately calculate the amount of liquid medicine that has passed based on these data, so as to obtain the total amount of liquid medicine after the change. The calculation formula behind it is: total amount of liquid medicine-(number of drops × droplet mass ÷ dripping time), which can accurately reflect the amount of liquid medicine remaining in the infusion tube at any time.

[0045] The circulation module is set to perform calculations once per second, which means that it can track and update the data of the total amount of liquid medicine in near real time. When the calculation mainboard 4 is started, the calculation module first calculates the total time for the initial liquid medicine to drip according to a preset formula, and sends this data to the display screen 11 in real time for the nurse to refer to. At the same time, the circulation module also starts its work, it obtains the data of the calculation module, and uses its own calculation formula to calculate the changed total amount of liquid medicine.

[0046] Take a specific operation as an example: suppose the droplet mass input by the nurse is 0.2 ml, the total amount of liquid medicine is 500 ml, and the infrared detection device 3 detects that the liquid medicine in the infusion tube drips steadily at a rate of 3 drops per second. According to the formula of the calculation module: 500÷(3*0.2÷1)=833, it can be concluded that the total time for the initial liquid medicine to drip is 833 seconds, that is, the display screen 11 will show a real-time flow rate of 0.6 ml per second, and the infusion is expected to be completed after 13 minutes and 53 seconds.

[0047] However, during this process, the circulation module is also working silently. It recalculates the total amount of liquid medicine based on the latest data every second. For example, after the first second, according to the circulation module's formula: 500-(3*0.2÷1)=499.4, it can be concluded that the remaining total amount of liquid medicine is 499.4 ml. Subsequently, the circulation module will send this updated total amount of liquid medicine data back to the calculation module. The calculation module will use its formula again to recalculate the updated total time for liquid medicine to drip based on the new total amount of liquid medicine data.

[0048] Therefore, even if the nurse temporarily leaves or forgets during the infusion process, when she checks the display screen 11 again, she can see the more accurate completion time of the dripping of the liquid medicine calculated based on the latest data. In the above example, when the circulation module completes the first update, the calculation module will obtain a new total completion time of the dripping of the liquid medicine: 499.4÷(3*0.2÷1)=832, which is 832 seconds, that is, the display screen 11 will be updated to show that the real-time flow rate is still 0.6 ml per second, but the estimated completion time will be shortened to 13 minutes and 52 seconds.

[0049] This design ensures that the data on the display screen 11 can accurately reflect the progress of the infusion in real time, thereby effectively avoiding observation errors caused by the nurse's forgetfulness. This setting improves the safety and efficiency of the infusion process.

[0050] In this embodiment, the extrusion device 2 includes a slide groove 20 opened inside the shell 1 and located on one side of the placement groove 10, a connecting groove opened on the side of the placement groove 10 close to the slide groove 20 and connected to the inside of the shell 1, and an extrusion plate 21 slidably connected to the inside of the shell 1 through the slide groove 20. One end of the extrusion plate 21 close to the placement groove 10 extends into the placement groove 10 through the connecting groove. The upper and lower ends of the slide groove 20 are provided with limiting grooves 22 connected to the slide groove 20. The limiting groove 22 is provided with a plurality of limiting grooves 22 and the limiting grooves 22 at the upper and lower ends of the slide groove are staggered. Each limiting groove 22 corresponds to a different flow rate and droplet mass. The corresponding slide grooves 22 are opened on the outside of the shell 1. The end of the extrusion plate 21 away from the placement groove 10 is provided with a push rod 23 that passes through the extrusion plate 21 and extends into the slide groove 20, and the other end of the push rod 23 extends out of the shell 1 through the through opening. A plurality of limit grooves 22 are opened through the limit groove 22, and the limit grooves 22 at the upper and lower ends are staggered so that the distance between each limit groove 22 and the placement groove 10 is different. The farther the limit groove 22 is from the placement groove 10, the faster the flow rate corresponding to it is and the greater the droplet mass is, so that the nurse can drive the extrusion plate 21 to slide into different limit grooves 22 through the push rod 23 to facilitate the nurse to adjust the flow rate and droplet mass of the infusion tube.

[0051] In this embodiment, the end face of one end of the extrusion plate 21 located in the placement groove 10 is an arc portion 24. The arc portion 24 allows the arc surface of the arc portion 24 of the extrusion plate 21 to abut against the infusion tube and swing up and down more smoothly when the nurse slides the push rod 23 to move into different limit grooves 22, thereby making it more convenient for the push rod 23 to move into different limit grooves 22.

[0052] Although the setting of the squeezing device 2 makes it more convenient for nurses to control the flow rate and the mass of the droplets in the infusion tube, some patients may be bored during the infusion and may play with the infusion speed control alarm, which may accidentally touch the push rod 23, resulting in changes in the mass and flow rate of the droplets. At this time, it will cause the data calculated by the computing motherboard 4 to be wrong. In order to solve this technical problem, in this embodiment, a fixing device 5 for fixing the push rod 23 is provided in the multiple limit grooves 22 and at the end of the push rod 23 extending into the slide groove 20. The device 5 includes a plurality of electromagnets 50 respectively arranged in a plurality of limit grooves 22 and a magnetic contact 51 arranged at the end of the push rod 23 extending into one end of the slide groove 20. An on-off switch for starting the electromagnet 50 is arranged on the outside of the shell 1. Through the setting of the fixing device 5, when the nurse adjusts the flow rate and the droplet mass of the infusion tube, the electromagnet 50 is turned on by the on-off switch, so that the electromagnet 50 adsorbs the push rod 23 through the magnetic contact 51, thereby preventing the patient from accidentally touching the push rod 23 and causing the push rod 23 to move.

[0053] In this embodiment, the infrared detection device 3 includes two infrared transmitters 30 and an infrared receiver 31 which are arranged in the shell 1 and are respectively located on both sides of the placement slot 10. A through hole corresponding to the output surface of the infrared transmitter 30 and the output surface of the infrared receiver 31 is opened in the shell 1. The through hole passes through the side walls on both sides of the placement slot 10. The infrared transmitter 30 transmits infrared rays to the infrared receiver 31. When the medicine drops, the droplets will block the infrared rays of the infrared transmitter 30. The infrared receiver 31 can obtain the dripping speed of the droplets and the number of droplets per second according to the blocking time, and then send them to the computing motherboard 4.

[0054] In this embodiment, a buzzer 6 whose signal is connected to the infrared receiver 31 is provided in the shell 1. The infrared receiver 31 continuously receives infrared rays from the infrared transmitter 30 within 3 seconds and sends a start signal to the buzzer 6, so that the buzzer 6 will sound an alarm after the medicine dripping is completed to remind nearby nurses to replace the medicine bottle.

[0055] The specific implementation process is as follows: first, place the infusion tube in the placement slot 10, then hold the push rod 23 and push the squeezing plate 21 in the direction of the placement slot 10, so that the squeezing plate 21 squeezes the infusion tube, and then slide the push rod 23 to the corresponding limit slot 22 according to the patient's condition, and then input the total amount of liquid medicine and the mass of the droplets into the computing main board 4 through the display screen 11, and finally connect the infusion tube to the medicine bottle, and then start the computing main board 4, so that the display screen 11 displays the current real-time flow rate of the droplets and the total time for the droplets in the medicine bottle to fall.

[0056] In the logical steps of application control, combined with Figure 5-Figure 7 As shown:

[0057] The flow rate detection, flow rate adjustment and drip rate alarm control can be performed separately.

[0058] Click the FLOW RATE button on the control panel (fixedly installed on the device housing), the system starts to detect the real-time flow rate, the mainboard controls the infrared work, detects the drip rate signal, calculates the corresponding drip rate and displays it on the display.

[0059] Push the push rod to adjust the flow rate, move the push rod along the limit hole (position) on the limit plate of the slide rail, push it to the corresponding position, realize contact at different contact points, and make the squeezing plate 21 squeeze the infusion tube to adjust the speed.

[0060] During the working process, the infrared is continuously activated. According to the feedback infrared signal, the mainboard performs signal analysis and statistics, performs dripping rate statistics and threshold / condition judgment, and controls the buzzer to alarm if it fails.

[0061] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An infusion rate control alarm to prevent patients from self-adjusting, characterized in that: The invention comprises a shell (1), a placement groove (10) provided on the back of the shell (1) for placing an infusion tube, a squeezing device (2) arranged inside the shell (1) for squeezing the infusion tube in the placement groove (10), an infrared detection device (3) arranged inside the shell (1) at both sides of the bottom end of the placement groove (10) and used to detect the number of drops of liquid medicine in the infusion tube and the time when the liquid medicine drops, and a calculation main board (4) arranged inside the shell (1) for receiving a drop number signal and a drop time signal from the infrared detection device (3) and calculating the total time for the liquid medicine in the medicine bottle to drop according to the drop number signal and the drop time signal. The shell (1) is provided with a display screen (11) on the outside, which is connected to the calculation main board (4) and used to display the real-time flow rate.

2. According to claim 1, the infusion rate control alarm for preventing patients from self-adjusting is characterized in that: The calculation main board (4) calculates the total time for the liquid in the medicine bottle to drip, using the formula: total amount of liquid / (number of drops×mass of drops / drip time).

3. The infusion rate control alarm for preventing patients from self-adjusting according to claim 1, characterized in that: The computing mainboard (4) comprises a computing module for calculating the total time required for the liquid medicine to drip and a circulation module for acquiring data from the computing module and calculating the changed total amount of liquid medicine data based on the data. The calculation formula of the circulation module is: total amount of liquid medicine - (number of drops × mass of droplets ÷ dripping time). After the circulation module calculates the total amount of liquid medicine, it sends the calculated total amount of liquid medicine data to the computing module. The circulation module calculates once per second.

4. The infusion rate control alarm for preventing patients from self-adjusting according to claim 1, characterized in that: The extrusion device (2) comprises a slide groove (20) provided inside the shell (1) and located on one side of the placement groove (10), a connecting groove provided on one side of the placement groove (10) close to the slide groove (20) and connected to the inside of the shell (1), and an extrusion plate (21) slidably connected to the inside of the shell (1) through the slide groove (20), one end of the extrusion plate (21) close to the placement groove (10) extends into the placement groove (10) through the connecting groove, and the slide groove (20) is provided with a limit groove (21) connected to the slide groove (20) at both upper and lower ends. 22), the limiting groove (22) is provided with a plurality of limiting grooves (22) and the limiting grooves (22) at the upper and lower ends of the slide groove (20) are arranged in a staggered manner, each limiting groove (22) corresponds to a different flow rate and droplet mass, the shell (1) is provided with openings corresponding to the slide groove (20) and the limiting groove (22) on the outside, the extrusion plate (21) is provided with a push rod (23) passing through the extrusion plate (21) and extending into the slide groove (20) at one end away from the placement groove (10), and the other end of the push rod (23) extends out of the shell (1) through the opening.

5. The infusion rate control alarm for preventing patients from self-adjusting according to claim 4, characterized in that: The end surface of one end of the extrusion plate (21) located in the placement groove (10) is a circular arc portion (24).

6. The infusion rate control alarm for preventing patients from self-adjusting according to claim 4, characterized in that: Part of a fixing device (5) for fixing the push rod (23) is provided in the plurality of limit grooves (22) and at the end of the push rod (23) extending into the slide groove (20).

7. The infusion rate control alarm for preventing patients from self-adjusting according to claim 6, characterized in that: The fixing device (5) comprises a plurality of electromagnets (50) respectively arranged in a plurality of limiting grooves (22) and a magnetic attraction contact (51) arranged at the end of the push rod (23) extending into one end of the slide groove (20), and an on / off switch for starting the electromagnet (50) is arranged outside the housing (1).

8. The infusion rate control alarm for preventing patients from self-adjusting according to claim 1, characterized in that: The infrared detection device (3) comprises two infrared transmitters (30) and an infrared receiver (31) which are arranged in a housing (1) and are respectively located on both sides of the placement slot (10); a through opening corresponding to the output surface of the infrared transmitter (30) and the output surface of the infrared receiver (31) is opened in the housing (1); and the through opening passes through the side walls on both sides of the placement slot (10).

9. The infusion rate control alarm for preventing patients from self-adjusting according to claim 8, characterized in that: A buzzer (6) whose signal is connected to an infrared receiver (31) is arranged in the housing (1). If the infrared receiver (31) continuously receives infrared rays from the infrared transmitter (30) within 3 seconds, it will send a start signal to the buzzer (6).

10. An application control method for an infusion rate control alarm for preventing self-adjustment by a patient according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, placing the infusion tube in the placement groove (10); S2, holding the push rod (23) and pushing the squeezing plate (21) in the direction of the placement slot (10), so that the squeezing plate (21) squeezes the infusion tube, and then sliding the push rod (23) to move into the corresponding limit slot (22) according to the patient's condition; S3, inputting the total amount of the liquid medicine and the mass of the liquid droplets into the calculation main board (4) through the display screen (11); S4, connect the infusion tube to the medicine bottle, and then start the computing mainboard (4), so that the display screen (11) displays the current real-time flow rate of the droplets and the total time for the droplets of the medicine bottle to be completed.

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