Infusion monitoring alarm system
By combining electrode design and circuit modules, the infusion status can be monitored in real time and early warnings can be set, solving the problems of false alarms and inaccurate identification of IV bottle type in existing systems under strong light conditions, and achieving highly accurate and convenient infusion monitoring.
Patent Information
- Application Number
- CN202410596061.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-11-14
AI Technical Summary
Existing infusion monitoring and alarm systems are easily interfered with in strong light environments, resulting in false alarms or failure to alarm. Furthermore, the weighing method cannot automatically identify the type of IV drip, affecting accuracy and ease of use.
The electrode plates are designed as vertical rectangles and horizontal strips. Combined with an FPC substrate, telescopic belt, circuit module and microcontroller main control module, the liquid level change of the infusion bottle is detected by capacitance, the infusion status is monitored in real time and an early warning time is set to eliminate the influence of the infusion arm swaying.
It achieves high-precision infusion monitoring with an accuracy rate of 99%, is applicable to different IV bags, requires no calibration, provides sufficient warning time, and improves the reliability and convenience of the infusion process.
Smart Images
Figure CN120939360A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of infusion monitoring and alarm system technology, specifically to an infusion monitoring and alarm system. Background Technology
[0002] As is well known, in smart wards, it is common for patients to receive intravenous infusions unattended. Intelligent devices are needed to determine when the infusion is complete, triggering an alarm to remind medical staff to remove the needle or change medication. Currently, infusion alarm devices mainly use two methods: infrared or photoelectric conversion sensors and weighing methods.
[0003] However, the infrared or photoelectric conversion sensors in existing infusion monitoring and alarm systems are easily interfered with in strong light environments, resulting in false alarms or no alarm at all. While the weighing method can issue an alarm signal by monitoring the weight change of the infusion bottle, it is inconvenient to use because the types and weights of the bottles vary, and the weight of the infusion bottle itself needs to be accurately removed before use. Furthermore, the accuracy is affected by the gravity of the swinging of the infusion rod. Summary of the Invention
[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides an infusion monitoring and alarm system.
[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: an infusion monitoring and alarm system, comprising an IV drip bottle, an infusion tube, and an infusion alarm device, wherein the infusion alarm device comprises an FPC substrate, a telescopic belt, a circuit module, electrode a, motor plates b-bn, an RS interface, a sub-unit, and a monitoring and alarm system, characterized in that: the infusion tube is disposed at the bottom of the IV drip bottle, the electrode a and the electrode plates b-bn are disposed on the FPC substrate, the FPC substrate is connected to the IV drip bottle via the telescopic belt, the circuit module is disposed on the IV drip bottle, the RS interface is disposed on the circuit module, and the sub-unit is connected to the circuit module via the RS interface.
[0006] To improve the performance, the present invention is improved in that the circuit module includes a pulse emission module, an amplifier filtering module, an A / D conversion module, and a microcontroller main control module, and the pulse emission module, the amplifier filtering module, the A / D conversion module, and the microcontroller main control module are electrically connected to each other.
[0007] To improve the performance, the present invention is improved in that the electrode a is designed as a long rectangular electrode in the longitudinal direction, and the electrode b-bn are designed as n long strip-shaped electrodes in the transverse direction with a spacing of mm.
[0008] (III) Beneficial Effects Compared with the prior art, the present invention provides an infusion monitoring and alarm system, which has the following beneficial effects: This infusion monitoring and alarm system, compared to traditional monitoring and alarm systems, can monitor the infusion status in real time and generate alarms or prompts when the infusion is about to end. The remaining volume or countdown alarm time can be freely set. Compared to infrared infusion alarms, its accuracy is over 99%, and the pre-set warning time provides nurses with sufficient preparation time, rather than alarming after the infusion is completed, leaving them no time to attend to it. Compared to weighing infusion alarms, it does not require pre-calibration and is suitable for different types of IV bags or situations where infusion is resumed after interruption. During the infusion process, when the normal remaining fluid is at the bm position, if the IV pole shakes and the fluid increases to the bm+1 position, an abnormality is detected and an elimination algorithm is used to improve accuracy. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 For the present invention Figure 1 A schematic diagram of the circuit module; Figure 3 This is a flowchart of the present invention; In the diagram: 1. IV bottle; 2. Infusion tube; 3. FPC substrate; 4. Telescopic belt; 5. Circuit module; 6. Electrode a; 7. Electrode b1-bn; 8. RS485 interface; 9. Sub-unit. Detailed Implementation
[0010] 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.
[0011] Please see Figure 1-3 An infusion monitoring and alarm system includes an IV drip bottle 1, an infusion tube 2, and an infusion alarm device 10. The infusion alarm device 10 includes an FPC substrate 3, a telescopic belt 4, a circuit module 5, electrode a6, motor plates b-bn, an RS interface, a sub-unit 9, and a monitoring and alarm system. The infusion tube 2 is located at the bottom of the IV drip bottle 1. The electrode a6 and electrode b-bn are mounted on the FPC substrate 3. The FPC substrate 3 is connected to the IV drip bottle 1 via the telescopic belt 4. The circuit module 5 is mounted on the IV drip bottle 1. The RS interface is mounted on the circuit module 5. The sub-unit 9 is connected to the circuit module 5 via the RS interface.
[0012] To improve the performance, the present invention is improved in that the circuit module 5 includes a pulse emission module, an amplifier filtering module, an A / D conversion module, and a microcontroller main control module, and the pulse emission module, the amplifier filtering module, the A / D conversion module, and the microcontroller main control module are electrically connected to each other.
[0013] To improve the performance, the present invention is improved in that the electrode a6 is designed as a long rectangular electrode in the longitudinal direction, and the electrode b-bn are designed as n long strip-shaped electrodes in the transverse direction with a spacing of mm.
[0014] In summary, during use, the infusion alarm device 10 is wrapped and bonded to the monitored IV bottle 1, so that the electrode a6 and electrode b1-bn7 are parallel and spaced apart by the diameter d of the IV bottle 1, and the electrode a6 and electrode b1-bn7 are crisscrossed. The microcontroller main control module sends a regular square wave to electrode a6, and the electrode gradually scans from b1 to bn to complete the initial liquid level detection. The value returned by electrode b1 to bn is C(b1-bn)=ε0 / d or C(b1-bn)=ε1 / d, where C(b1-bn) is the capacitance value, ε0 is the dielectric constant when there is no infusion fluid in IV bottle 1, ε1 is the dielectric constant when there is fluid in IV bottle 1, and d is the distance between the electrodes. By reading the C(b1-bn) value, sending it through the amplifier filtering module to the A / D conversion module to compare all the values of C(b1-bn), the position of the infusion fluid is determined. Figure 3As shown in the flowchart, the position of the liquid bn is initialized and the capacity value is set to 100%. During the infusion process as time increases, the value of C(b1 - bn) is compared in real time to determine the position, and thus the remaining capacity is calculated and output in percentage form. At the same time, the remaining infusion time is calculated by collecting the interval between the remaining capacity percentage and the initial value percentage in minutes. The data of the remaining infusion percentage and the remaining time are transmitted to the bedside device through the RS485 communication interface. The nursing whiteboard or the management machine platform displays the infusion monitoring status of the corresponding bed according to the IP address of the bedside device, that is, the bed number. When the remaining liquid volume of the infusion bottle 1 is 5% or the remaining time is 5 minutes (either one, the remaining amount or time for early warning can be set), the infusion alarm device 10 and the platform alarm prompt are triggered. During the normal remaining liquid level bm (b1 < bm < bn) position in the infusion process, when the hanging rod shakes and the liquid overflows to the bm + 1 position, it is determined as abnormal and an elimination algorithm is adopted. The time is collected as Δb’ = b(t - 1) - b(t), and the law of the remaining infusion liquid is integrated. The value at time t is compared with the mean measured value, and bm = max{min(b(t), b(t - 1)-), min(b(t), bm - 1)} until the remaining liquid level is bm or bm - 1 for comparison and correction. Compared with the traditional monitoring and alarm system, this system can monitor the infusion status in real time and generate an alarm or prompt when the infusion is about to end. The remaining amount or the countdown alarm time can be freely set. Compared with the infrared infusion alarm, the accuracy rate can be increased to more than 99%. And the early warning time can be set to provide enough preparation time for the nurse instead of alarming after the infusion is completed, leaving people with no time to take care. Compared with the weighing infusion alarm, it does not need to be calibrated before use, and is applicable to different sizes of infusion bottles 1 or the situation of continuing infusion after infusion interruption. During the normal remaining liquid level bm position in the infusion process, when the hanging rod shakes and the liquid overflows to the bm + 1 position, it is determined as abnormal and an elimination algorithm is adopted. The collected time and the result of the Δb law are output until the remaining liquid level is bm or bm - 1 for comparison and correction to improve the accuracy.
[0015] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An infusion monitoring and alarm system, comprising an IV drip bottle (1), an infusion tubing (2), and an infusion alarm device (10), characterized in that: The infusion alarm device (10) includes an FPC substrate (3), a telescopic belt (4), a circuit module (5), an electrode a (6), motor plates b1-bn, an RS485 interface (8), a sub-unit (9), and a monitoring and alarm system. The infusion tube (2) is located at the bottom of the IV bottle (1), the electrode a (6) and the electrode b1-bn (7) are located on the FPC substrate (3), the FPC substrate (3) is connected to the IV bottle (1) through the telescopic belt (4), the circuit module (5) is located on the IV bottle (1), the RS485 interface (8) is located on the circuit module (5), and the sub-unit (9) is connected to the circuit module (5) through the RS485 interface (8).
2. The infusion monitoring and alarm system according to claim 1, characterized in that: The circuit module (5) includes a pulse emission module, an amplifier filter module, an A / D conversion module, and a microcontroller main control module, which are electrically connected to each other.
3. The infusion monitoring and alarm system according to claim 2, characterized in that: The electrode a (6) is designed as a long rectangular electrode in the longitudinal direction, and the electrode b1-bn (7) is designed as n long strips in the transverse direction with a 1mm interval.