CN107441590A - A kind of novel infusion monitoring system and its monitoring method - Google Patents

Abstract

The invention discloses a novel infusion monitoring device system and a monitoring method thereof. The monitoring device system includes a plurality of infusion monitoring devices, an alarm system module and a management equipment module. The monitoring device is connected to the branch single-chip microcomputer of each ward, and the alarm modules are placed in the ward and the nurse station respectively. The monitoring method monitors the change of the liquid medicine and the weight of the remaining liquid medicine through the pressure sensor, and monitors the dripping of the liquid medicine and the height of the remaining liquid medicine through the infrared module. The temperature sensor monitors the temperature change of the back of the hand; monitors the human heart rate data through the heart rate meter; alarms according to the monitoring conditions of the pressure sensor, infrared module, temperature sensor and heart rate meter, and transmits the signal to the cloud server, terminal and APP through the wireless network The information of the cloud server can be accessed through the wireless network and corresponding instructions can be obtained.

Description

A novel infusion monitoring system and monitoring method thereof

technical field

The invention relates to an infusion monitoring device, in particular to a novel infusion monitoring system and a monitoring method thereof, belonging to the technical field of medical monitoring.

Background technique

The infusion devices currently used in hospitals require family members to accompany patients during infusion. Accompanying personnel need to pay close attention to the infusion situation and cannot leave. Once negligent, it is easy to cause blood return or needle swelling, resulting in medical accidents. In the prior art, there is a pressure sensor and infrared detection and measurement method to monitor the infusion situation. The pressure sensor measurement method is to add a pressure sensor to the hook of the infusion bottle to measure whether there is still liquid dripping by sensing the change of the pressure. Using infrared detection technology, the infusion speed is measured at the dropper. After the infrared light-emitting diode emits light, the optical fiber shines on the infrared photosensitive receiving diode through the dropping funnel, and the receiving diode converts the light irradiated on it into a current signal for output. If there is liquid medicine falling in the dropping funnel at this time, because the liquid medicine blocks the light, the liquid medicine has the effect of absorbing and scattering the light, so that the photosensitive diode receives a relatively weak light signal to judge whether there is a droplet dropping. The above two technologies have their own advantages, but there are certain errors, such as the shaking of the infusion device due to external reasons, there is a misjudgment of the above results.

Contents of the invention

In view of the above problems, the present invention provides a novel infusion monitoring system and monitoring method thereof, the purpose of which is to reduce errors by using a comprehensive detection module of multi-sensor technologies such as pressure sensors and infrared sensors, ensure detection results, and then trigger an alarm signal.

Technical solution of the present invention:

A new type of infusion monitoring system, characterized in that it includes multiple infusion monitoring devices and management equipment modules, the management equipment modules and the infusion monitoring devices are connected through the cloud, the connection mode is 4G network or WIFI, and the infusion monitoring devices are located in each The beds in the ward are used to monitor the infusion situation of each bed; the management equipment module is located in the nursing station and is used to receive the patient information transmitted by the infusion monitoring device.

The infusion monitoring device comprises a single-chip microcomputer, a pillar, a pressure sensor, an infrared module, a solenoid valve, a temperature sensor, a heart rate meter, an infrared detection rod and an alarm module. , solenoid valve, temperature sensor, heart rate meter, infrared detection rod and alarm module are connected, and the wireless module is arranged on the described single chip, and the wireless module is a mobile wireless communication module or a WIFI communication module, and the single chip is connected with the management equipment module through the wireless module Communication, the hanging water bottle is hung on the column hook, the pressure sensor is placed on the hook above the hanging water bottle, and the infrared device is composed of two infrared light-emitting diodes, which are respectively the transmitting end and the receiving end, fixed on both sides of the dropping funnel , the infrared detection rod is placed on both sides of the hanging water bottle, the temperature sensor is a temperature patch, which is attached to the back of the patient's hand, the heart rate meter is tied to the body, and the alarm system module includes a buzzer and an indicator light , the indicator lights include red, yellow and green signal lights.

A novel infusion monitoring method, characterized in that:

Monitor the change of the liquid medicine and the weight of the remaining liquid medicine through the pressure sensor, and trigger signal 1 and trigger signal 2;

The dripping of the liquid medicine and the height of the remaining liquid medicine are monitored through the infrared module, and trigger signal 3 and trigger signal 4 are generated;

The temperature change on the back of the hand is monitored by the temperature patch device, and trigger signal five is generated.

Monitor the heart rate data of the human body through the heart rate meter, and trigger signal six;

According to the monitoring situation of the pressure sensor, infrared module, temperature patch device and heart rate meter, an alarm is issued.

Preferably, when trigger signal 2 and trigger signal 4 occur, an alarm signal is issued, a pre-alarm is performed, and the green light is on; when both trigger signal 1 and trigger signal 3 occur or trigger signal 6, an emergency alarm signal is sent, and the red light is on , the buzzer sounds, and the solenoid valve is closed; when only the signal four is triggered, an emergency alarm signal is sent, and the yellow light is on.

Preferably, when the pressure of the pressure sensor does not change within a specified time, a trigger signal 1 is generated, and when the pressure sensor senses that the quality of the liquid medicine in the medicine bottle is between 15 g and 20 g, a trigger signal 2 is generated.

Preferably, the optical fiber irradiates the infrared photosensitive receiving diode through the dropping funnel, and the receiving diode converts the light irradiated on it into a current signal for output. , the liquid has the effect of absorbing and scattering light, so that the photodiode receives a relatively weak light signal to judge whether there is a droplet, and trigger signal three when the light signal changes significantly; make a water bottle next to it The electric rail is fixed on the pillar, and the height of the infrared detection rod is controlled by the electric rail, and the warning height required for the pre-alarm is set according to the requirements. When the liquid level is lower than the warning height, the level signal on the infrared detection rod Change occurs, and signal four is triggered at this time.

Preferably, when the back of the hand is swollen, the back of the hand will generate heat and cause a temperature difference between the bulge and the normal condition, and the temperature sensor will trigger signal five when the temperature changes accordingly.

Preferably, a normal heart rate value and an abnormal state value are set, and when the heart rate meter detects that the heart rate fluctuation exceeds the normal value and reaches the abnormal state value, a trigger signal six is generated.

Preferably, the management device module includes a mobile phone APP and a terminal, the mobile phone APP is used to receive patient information transmitted by a terminal device, the terminal device is an intelligent infusion monitoring system, and the intelligent infusion monitoring system includes patient information and parameters Display, the patient information includes name, age, bed number, liquid medicine name, and the parameters displayed are liquid medicine quality, drip rate, speed limit, back of hand temperature, time spent, heart rate value, temperature graph and heart rate graph.

Preferably, the electromagnetic valve is composed of a sucker-type electromagnet, and the single-chip microcomputer sends an instruction signal to control the sucker-type electromagnet through a relay to close the regulator valve and minimize the infusion speed. The power is directly turned off and switched to manual adjustment.

Preferably, the control of the remaining time of dripping is realized through the pressure sensor, and three parameters are set, the first parameter is the quality of the liquid medicine M , the second and third parameters are respectively the time t _{0 and} t ₁ (t ₀ >t ₁ ) before the Drip input is finished. At t ₀ , a primary alarm is issued, and at t ₁ , an emergency alarm is issued, and the drip speed slowing mechanism is started at the same time.

The pressure sensor can measure the mass Δm of the liquid medicine reduced in the first second , the mass Δm of the drug solution reduced in the second second ······The reduced mass Δm of the liquid medicine in the nth second ; Then calculated by software:

The remaining time after one second T1=(M —Δm )/Δm ;

The remaining liquid quality M after one second = M —Δm ;

The remaining time after two seconds T2=(M —Δm )/Δm ;

After two seconds, the remaining medicinal liquid quality M = M —Δm ;

The remaining time after N seconds Tn=(M - —Δm )/Δm ;

The remaining time is recalculated every time, and the remaining time can be displayed in real time according to the dripping speed. And in order to ensure the accuracy, the system measures once every 1 minute, and recalculates the total time T required for drip infusion, and takes the average value.

Through the control of the remaining time of dripping, the setting of time reminder is realized, which is convenient for medical staff to adjust the time according to the actual situation, and realizes the timely alarm function.

Beneficial effects of the present invention:

The present invention monitors the change of the liquid medicine and the weight of the remaining liquid medicine through the pressure sensor, monitors the dripping of the liquid medicine and the height of the remaining liquid medicine through the infrared module, monitors the temperature change of the back of the hand through the temperature patch device, and monitors the heart rate data of the human body through the heart rate meter. According to the pressure sensor, infrared module, temperature patch device and heart rate meter monitoring situation, the present invention monitors the quality and remaining time of the remaining liquid medicine through the pressure sensor, which is convenient for medical staff to adjust the time according to the actual situation, and realizes the timely alarm function.

Description of drawings

Figure 1: Schematic diagram of the structure of the device of the present invention.

Figure 2: System frame diagram of single chip microcomputer and infusion monitoring device.

Figure 3: Overall System Block Diagram

Figure 4: Terminal Labview working interface diagram

Figure 5: General diagram of the circuit of the infusion monitoring device.

Among them: 1 pillar, 2 hanging water bottle, 3 infrared device, 4 pressure sensor, 5 single chip microcomputer, 6 solenoid valve, 7 alarm module, 8 infrared monitoring rod.

detailed description

The present invention will be further described below in conjunction with accompanying drawing and embodiment:

As shown in Figures 1 to 5, a new type of infusion monitoring system includes a plurality of infusion monitoring devices, an alarm system module and a management equipment module, and the management equipment modules are respectively connected with the infusion monitoring device and the alarm system module. The device monitoring situation sends an alarm signal to the alarm system module, and the infusion monitoring device is connected with the management equipment module to send an alarm signal to the alarm system module; the infusion monitoring device is located in each ward bed, and is used to monitor the infusion situation of each bed. The alarm system modules are respectively placed in the ward and the nurse station, and the alarm system modules include buzzers and indicator lights, and the indicator lights include red, yellow and green signal lights.

Described transfusion monitoring device comprises single-chip microcomputer 5, pillar 1, pressure sensor 4, infrared device 3, solenoid valve 6, temperature sensor, heart rate meter and infrared detection bar, described single-chip microcomputer 5 is STM32 single-chip microcomputer, and single-chip microcomputer 5 is connected with pressure sensor, Infrared module, solenoid valve, temperature sensor, heart rate meter and infrared detection rod are connected, and described single-chip microcomputer 5 is provided with wireless module, and described wireless module is mobile wireless communication module or WIFI communication module, and single-chip microcomputer 5 communicates with management equipment through wireless module Module communication, the hanging water bottle 2 is hung on the column hook, the pressure sensor 4 is placed on the hook above the hanging water bottle, and the infrared device is composed of two infrared light-emitting diodes, which are respectively the transmitting end and the receiving end, fixed on the drop On both sides of the bucket, the infrared detection rods are placed on both sides of the hanging water bottle, the temperature sensor is a temperature patch, which is attached to the back of the patient's hand, and the heart rate meter is tied to the body.

A new type of infusion monitoring method. The pressure sensor 4 monitors the change of the liquid medicine and the weight of the remaining liquid medicine, and trigger signal 1 and trigger signal 2 are generated; the dripping of the liquid medicine and the height of the remaining liquid medicine are monitored through the infrared device 3 and the infrared detection rod 8 , the trigger signal 3 and trigger signal 4 are generated; the temperature change of the back of the hand is monitored by the temperature sensor, the trigger signal 5 is generated, the human heart rate data is monitored by the heart rate meter, the trigger signal 6 is generated; according to the pressure sensor 4, the infrared device 3, the infrared detection Rod 8, temperature sensor and heart rate meter monitoring situation give an alarm.

When trigger signal 2 and trigger signal 4 occur, an alarm signal is issued, a pre-alarm is performed, and the green light is on; when both trigger signal 1 and trigger signal 3 occur or trigger signal 6, an emergency alarm signal is issued, the red light is on, and the buzzer beeps The device sounds, and the electromagnetic valve 6 is closed; when only the trigger signal four, an emergency alarm signal is sent, and the yellow light is on; when the trigger signal one and the trigger signal three occur simultaneously or when the trigger signal six occurs, the electromagnetic valve 6 is closed.

Preferably, when the pressure of the pressure sensor 4 does not change within a specified time, a trigger signal 1 is generated, and when the pressure sensor 4 detects that the quality of the liquid medicine in the medicine bottle is between 15 g and 20 g, a trigger signal 2 is generated.

Preferably, the infrared device 3 is composed of two infrared light-emitting diodes, which are the transmitting end and the receiving end respectively, and are fixed on both sides of the dropping funnel, and the optical fiber shines on the infrared photosensitive receiving diode through the dropping funnel, and the receiving diode will shine on it The light becomes a current signal for output. If there is liquid medicine falling in the dropping funnel at this time, the liquid has the effect of absorbing and scattering the light because the liquid blocks the light, so that the photodiode receives a relatively weak light. Optical signal, to judge whether there is liquid drop dripping, trigger signal three when optical signal changes obviously; Described infrared detecting bar 8 is placed on the both sides of hanging water bottle 2, makes an electric track beside hanging water bottle 2, and it is fixed on At column 1, set the warning height required for the pre-alarm according to the requirements, and the height of the infrared detection rod 8 is controlled by the electric rail to monitor the liquid level in real time. When the liquid level is lower than the infrared part, the infrared detection rod 8 will When the level signal changes, signal four is triggered at this time.

Preferably, the temperature sensor is a temperature patch, which is pasted on the back of the patient's hand. When the back of the hand is swollen, the back of the hand will heat up and cause a temperature difference between the swollen and normal conditions. The temperature sensor triggers signal five when the temperature changes accordingly.

Preferably, the heart rate meter is tied to the body, and the normal value and abnormal state value of the heart rate are set. When the heart rate meter detects that the heart rate fluctuation exceeds the normal value and reaches the abnormal state value, a trigger signal 6 is generated.

Preferably, the management device module includes a mobile phone APP and a terminal device, the terminal device is an intelligent infusion monitoring system, an application interface based on Labview, including patient information and parameter display, and the patient information includes name, age, bed position No., liquid name, the parameters displayed are liquid quality, drip rate, speed limit, back of hand temperature, time, heart rate value, temperature graph and heart rate graph.

Preferably, the electromagnetic valve 6 is composed of a sucker-type electromagnet, and the single-chip microcomputer 5 sends a command signal, and the relay controls the sucker-type electromagnet to close the regulator valve to minimize the infusion speed. The electromagnetic valve 6 can also be adjusted according to needs or In case of emergency, the power will be turned off directly and switched to manual adjustment.

Preferably, the control of the remaining time of dripping is realized through the pressure sensor 4, three parameters are set, the first parameter is the quality of the liquid medicine M , the second and third parameters are respectively the time t _{0 and} t ₁ (t ₀ >t ₁ ) before the Drip input is finished. At t ₀ , a primary alarm is issued, and at t ₁ , an emergency alarm is issued, and the drip speed slowing mechanism is started at the same time.

The mass Δm reduced by the first second liquid medicine can be measured by the pressure sensor 4 , the mass Δm of the drug solution reduced in the second second ······The reduced mass Δm of the liquid medicine in the nth second ; Then calculated by software:

The remaining time after one second T1=(M —Δm )/Δm ;

The remaining liquid quality M after one second = M —Δm ;

The remaining time after two seconds T2=(M —Δm )/Δm ;

After two seconds, the remaining medicinal liquid quality M = M —Δm ;

The remaining time after N seconds Tn=(M - —Δm )/Δm ;

The remaining time is recalculated every time, and the remaining time can be displayed in real time according to the dripping speed. And in order to ensure the accuracy, the system measures once every 1 minute, and recalculates the total time T required for drip infusion, and takes the average value.

Through the control of the remaining time of dripping, the setting of time reminder is realized, which is convenient for medical staff to adjust the time according to the actual situation, and realizes the timely alarm function.

Described alarm module 7 is the most important link in the design of novel infusion monitoring device, and it is made up of MIC recording circuit, W29C040 memory, DAC playback circuit, loudspeaker. Described from single-chip microcomputer 6 is made up of single-chip microcomputer 1, single-chip microcomputer 2.....Single-chip microcomputer n, they are responsible for monitoring the infusion situation, and send alarm signal to server, terminal equipment can visit the information of server and generate corresponding order, but pay attention to What is more important is that each alarm signal sent from the single-chip microcomputer 6 is different. If there are n single-chip microcomputers, the alarm signal has n bits, and in the n-bit signal, no matter which one of the hanging needles is hung, which bit is set to one, and the rest are set to zero. Just can know which single-chip microcomputer is like this according to alarm signal, thus know which No. 1 sickbed. MIC recording circuit, W29C040 memory, DAC playback circuit, and loudspeaker are composed of the MIC recording circuit. in the amplification circuit. The amplifying circuit contains an automatic gain control circuit AGC, which can track and monitor the audio signal level output by the preamplifier at any time. When the input level signal decreases, the AGC circuit automatically increases the gain of the amplifier, and when the input signal increases, the preamplifier AGC automatically reduces the gain of the amplifier so that the signal input to the A/D remains at the optimum level. The amplifying circuit also includes an A/D converter to sample the input voice signal. According to the sampling theorem, the sampling frequency is 8kHz and encoded according to Sunplus audio format, which will occupy 16K storage space per second. In order to increase the storage time, the system expands an external storage W29C040 to expand capacity and space. It stores the processed voice data, thus realizing the recording storage function. The MIC can be understood as a resistance that changes with the sound pressure, and the voltage difference between pins 1 and 2 of the MIC changes with the magnitude and frequency of the sound. Then the two signals with DC components are added to the MICP and MICN pins of 061A through two capacitors, and then sent to the AD converter after being amplified by the automatic gain of 061A to generate digital audio voltage values.

The temperature patch device is a temperature sensor, and the temperature patch device is ultra-thin, so that the wearer will not feel uncomfortable. The bulge is caused by the needle running out of the blood vessel and the solution entering the tissue, resulting in edema. At this time, there will be some fever in the edema zone, which is a non-specific inflammatory reaction caused by subcutaneous tissue contact with foreign matter, so it will also cause a difference in temperature between the front and rear of the back of the hand under normal infusion and bulging, and the patch device can be used to monitor skin factors. The slight change in temperature caused by the change in blood flow sends its signal to the alarm module, which triggers signal four and causes the yellow light to turn on. In this way, it is avoided that the wound is not treated in time to cause more serious inflammation, and the alarm mechanism is more perfect.

The heart rate meter device is tied to the patient's wrist in the form of a heart rate meter, records the heart rate data through its built-in sensor, and automatically synchronizes the data to the host computer. In this way, the nurse station can monitor the patient's physiological condition in real time. If the heart rate value on the electrocardiogram exceeds the normal value or reaches the value of abnormal conditions (such as allergies to the drugs used, abnormal heart rate caused by the use of cephalosporins after drinking, etc.), the signal will be sent to the single-chip microcomputer, and the alarm system will be triggered. And send a signal to the solenoid valve to close the regulator, thereby stopping the infusion.

In summary, the present invention achieves the expected purpose and improves the accuracy of data.

Claims (10)

1. A novel infusion monitoring system, characterized in that: it comprises a plurality of infusion monitoring devices and management equipment modules, the management equipment modules and the infusion monitoring devices are connected through the cloud, and the infusion monitoring devices are located in each ward bed for monitoring The infusion situation of each bed; the management equipment module is located in the nursing station and is used to receive the patient information transmitted by the infusion monitoring device. 2. A new type of infusion monitoring system according to claim 1, characterized in that: said infusion monitoring device includes a single-chip microcomputer, a pillar, a pressure sensor, an infrared module, a solenoid valve, a temperature sensor, a heart rate meter, an infrared detection rod and Alarm module, the single-chip microcomputer is an STM32 single-chip microcomputer, and the single-chip microcomputer is respectively connected with a pressure sensor, an infrared module, a solenoid valve, a temperature sensor, a heart rate meter, an infrared detection rod and an alarm module, and the single-chip microcomputer is provided with a wireless module, and the wireless module It is a mobile wireless communication module or a WIFI communication module, and the single-chip microcomputer communicates with the management equipment module through the wireless module. Composed of light-emitting diodes, which are respectively the transmitting end and the receiving end, fixed on both sides of the drip funnel, the infrared detection rod is placed on both sides of the water bottle, the temperature sensor is a temperature patch, attached to the back of the patient's hand, the heart rate The meter is tied to the body; the solenoid valve is composed of a sucker-type electromagnet, and the single-chip microcomputer sends a command signal to control the sucker-type electromagnet through a relay to close the regulator valve and minimize the infusion speed. The solenoid valve can also be adjusted according to needs or In an emergency, the power supply is directly turned off and switched to manual adjustment; the alarm system module includes a buzzer and an indicator light, and the indicator light includes red, yellow, and green signal lights. 3. A new type of infusion monitoring system according to claim 1 or 2, characterized in that: the management device module includes a mobile phone APP and a terminal device, and the mobile phone APP is used to receive patient information transmitted by the terminal device, and the The terminal device is an intelligent infusion monitoring system, which is an application interface based on Labview, including patient information and parameter display. The patient information includes name, age, bed number, and liquid medicine name. The parameters displayed are the liquid medicine quality and drip speed. , speed limit, temperature on the back of the hand, time spent, heart rate value, temperature graph and heart rate graph. 4. the monitoring method of a kind of novel transfusion monitoring system according to claim 3: it is characterized in that: Monitor the change of the liquid medicine and the weight of the remaining liquid medicine through the pressure sensor, and trigger signal 1 and trigger signal 2; The dripping of the liquid medicine and the height of the remaining liquid medicine are monitored through the infrared module, and trigger signal 3 and trigger signal 4 are generated; Monitor the temperature change on the back of the hand through the temperature sensor, and trigger signal five; Monitor the heart rate data of the human body through the heart rate meter, and trigger signal six; According to the monitoring situation of pressure sensor, infrared module, temperature sensor and heart rate meter, it will alarm. 5. A new type of infusion monitoring method according to claim 4: It is characterized in that: when the remaining liquid medicine reaches the specified amount, the data signal is fed back to the pressure sensor and the infrared module so as to trigger signal two and signal four respectively, and an alarm signal is sent out , pre-alarm, the green light is on; when the liquid drops are finished, the data signal is fed back to the pressure sensor and the infrared module to trigger signal 1 and signal 3 respectively, or when the heart rate meter is in an abnormal state, it triggers signal 6 to send an emergency alarm signal, and the red light On, the buzzer sounds, and the solenoid valve is closed; when only the signal five is triggered, an emergency alarm signal is sent, and the yellow light is on. 6. A new type of infusion monitoring method according to claim 4, characterized in that: when the liquid medicine is dripped, the pressure of the pressure sensor will no longer change within the specified time, and trigger signal one will be generated; when the pressure sensor When the quality of the liquid medicine in the medicine bottle is sensed to be 15g~20g, a trigger signal 2 is generated. 7. a kind of novel transfusion monitoring method according to claim 4, is characterized in that: Make an electric track next to the hanging water bottle, fix the electric track on the pillar, and the electric track controls the height of the infrared detection rod. If there is a liquid medicine falling in the dropping funnel at this time, the liquid has the effect of absorbing and scattering the light because the liquid blocks the light, so that the photodiode receives a relatively weak light signal, To judge whether there is a liquid drop, trigger signal three when the optical signal changes significantly; set the warning height required for the pre-alarm according to the requirements, and control the height of the infrared detection rod by the electric rail to monitor the liquid level in real time. When the liquid level is lower than the infrared part, the level signal on the infrared monitoring rod changes, and signal four is triggered at this time. 8. A new type of infusion monitoring method according to claim 4, characterized in that: when the back of the hand is swollen, the back of the hand will heat up causing a temperature difference between the bulge and the normal condition, and the temperature sensor will trigger signal 5 when the temperature changes accordingly. . 9. A new type of infusion monitoring method according to claim 4, characterized in that: the heart rate normal value and the abnormal state value are set, and when the heart rate meter detects that the heart rate fluctuation exceeds the normal value and reaches the abnormal state value, a trigger signal is generated six. 10. A new type of infusion monitoring method according to claim 4: it is characterized in that: the control of the remaining time of dripping is realized through the pressure sensor, and three parameters are set, the first parameter is the quality of the liquid medicine M , the second and third parameters are the time t _{0 and} t ₁ (t ₀ >t ₁ ) before the end of drip infusion, the primary alarm is issued at t ₀ , the emergency alarm is issued at t ₁ , and the drip speed slowing mechanism is activated at the same time.