CN101987216A - Three-in-one venous transfusion monitoring system - Google Patents
Three-in-one venous transfusion monitoring system Download PDFInfo
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- CN101987216A CN101987216A CN2009101014335A CN200910101433A CN101987216A CN 101987216 A CN101987216 A CN 101987216A CN 2009101014335 A CN2009101014335 A CN 2009101014335A CN 200910101433 A CN200910101433 A CN 200910101433A CN 101987216 A CN101987216 A CN 101987216A
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Abstract
The invention relates to a three-in-one venous transfusion monitoring system, which is used for assisting a venous transfusion process, can be hung or fixed on the conventional transfusion bracket, realizes alarm reminding when transfusion is finished, automatic dripping speed regulation and control and pulse monitoring in a transfusion process and can remind a patient when abnormity occurs at the end of or during the transfusion and inform a nurse station in a wired or wireless radio frequency transmitting mode for in-time treatment. The monitoring system comprises three subsystems, namely, a transfusion alarm subsystem, a transfusion dripping speed control subsystem and a transfusion pulse monitoring subsystem which are used together so as to fully detect the venous transfusion process and can be used separately in different application occasions. Therefore, the monitoring system has high practicability. Liquid level is detected innovatively in a capacitance sensor mode, so that high accuracy is achieved.
Description
Technical field
The invention belongs to medical instruments field, be used for auxiliary intravenous injection process, can hang or be fixed on the existing infusion support, realize that injection finishes warning reminding, automatically pulse is monitored three-in-one function in a velocity modulation joint control and the infusion process, when infuse end or process have unusual generation, not only can in time remind the patient, can notify the nurse platform by the transmission means of wired or less radio-frequency simultaneously, so that in time handle.
Background technology
Often there is following problem in the existing venous transfusion process:
1. patient/nurse needs to note constantly residue liquid medicine situation, and especially for patient and nurse in the night ward, this is a kind of physiology and psychological dual torment;
2. transfusion speed often is difficult to follow the doctor's advice, and the general speed of dripping is fast, especially for some cardiovascular disease or, for gerontal patient and some specific drugs, need the complicated velocity modulation joint process of dripping to reach doctor's advice and drip speed;
The patient if abnormal response, the time of leaving rescue for is very valuable in infusion process, often a step pinpoints the problems early now.
Therefore, if there is a kind of technology to address the above problem, the efficient of whole infusion process and patient's comfort level will be improved greatly.
Summary of the invention
The present invention is primarily aimed at the problem that exists in the above-mentioned infusion process, has proposed a solution, can perfectly address the above problem.
1. transfusion warning subsystem: can detect transfusion accurately and whether finish, after transfusion finishes, can locally remind the patient, can also be connected to calling system by wired and wireless mode.The most important thing is that after transfusion finished to begin to remind and reports to the police, system can drop to speed a rational minimum automatically, neither can cause the thrombosis also can blood back, leave nurse 3-5 minute response time for.
2. transfusion speed is regulated control subsystem automatically and transfusion speed can be controlled to be a setting value, also can show current transfusion speed in real time, this is very useful to the demand occasion that needs the low speed transfusion, and real-time simultaneously demonstration transfusion speed also can follow the doctor's advice conscientiously and infuse.
Transfusion monitoring of pulse subsystem can be in the whole process of transfusion the monitor pulse situation, in case abnormal case occurs, can produce warning, can enter emergency processing flow early, farthest guarantee patient's safety.If this subsystem uses separately simultaneously, also can when every day, the nurse patrolled the room sooner or later, can provide the patient pulse data easily.
Three subsystems of the present invention can use simultaneously, and maximized convenience and safety can be provided; Each subsystem also can use separately according to hospital's practical situation simultaneously.Easy for installation, need debugging hardly, do not need to change existing flow process of hospital and nurse custom yet.Can improve nurse job efficient effectively, degree of fatigue when the reduction patient infuses and alleviation entourage's nervous psychology.Reliability is high.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing, in the accompanying drawing:
Fig. 1 is the operation principle block diagram of three-in-one vein transfusion monitoring system;
Fig. 2 is the control system theory diagram of three-in-one vein transfusion monitoring system;
Fig. 3 is the transfusion warning of three-in-one vein transfusion monitoring system and the structure chart that drips speed control system subsystem;
Fig. 4 is the alarm detection capacitor sensor structure figure of three-in-one vein transfusion monitoring system;
Fig. 5 is a speed control modular structure figure of three-in-one vein transfusion monitoring system;
Fig. 6 is the control system main circuit schematic diagram of three-in-one vein transfusion monitoring system;
Fig. 7 is the control system power pack circuit theory diagrams of three-in-one vein transfusion monitoring system;
Fig. 8 is the control system electric capacity change-over circuit schematic diagram of three-in-one vein transfusion monitoring system.
The specific embodiment
Fig. 1 is for using the three-in-one vein transfusion monitoring system operation principle of the present invention block diagram.
Wherein 1 is the wireline call bus, 2 are alternating current 220V commentaries on classics direct current 12V power supply adaptor, 3 is radio-frequency antenna, 4 are system master system device, 5 are the button that is provided with on the master controller, 6 is the LED light on the master controller, 7 is segment code type information display, and 8 is the infusion support horizontal support, and 9 is infusion bottle/transfusion bag, 10 is capacitance type liquid level detecting sensor and minitype speed reducing motor drop-speed controller structure, 11 drip fast detecting sensor for photo-electric, and 12 is the infusion support vertical rack, and 13 for referring to that arteries and veins oxygen detects pulse transducer, 14 is infusion needle, and 15 is sick bed/patient.
System is furnished with three buttons (5), can be provided with to specify transfusion speed (dripping speed) system start-up or quit work; Three pick offs: capacitance type liquid level detecting sensor (10), a fast detecting sensor (11) and pulse detection pick off (13) then detect the medical observation object variation in the whole infusion process in real time: whether transfusion finishes, whether suitable, whether pulse is in reasonable range if dripping speed.Four indication LED (6) are used to refer to system running state, and one of them is synchronous with a speed, and just each Tropfen is from dripping, and this LED just flicker once is convenient to patient and nurse's actual observation.Seven segment code formula indication information (7) can show current speed (drip/minute) and pulse (inferior/minute), also can show configuration information, as is provided with and specifies a speed etc.Drip speed control system motor (10) then with drip a fast detecting sensor (11) and cooperate, loosen or tighten up tube for transfusion according to the feedback of a speed sensors to reach the purpose of a speed control system.
After transfusion is finished, drip speed control system circuit and can guarantee that the liquid medicine that drips in the kettle can keep 3～5 minutes with 2～3 droplets/minute speed, so that the nurse finishes the liquid medicine replacing or takes off infusion needle during inferior; Controller is notified the nurse platform by wireless or wired mode simultaneously.LED on the controller can glimmer at this moment, and buzzer can alarm sounds be reminded.
Fig. 2 is the controller principle block diagram of the three-in-one vein transfusion monitoring system of the present invention.
Wherein 1 is power management module, please refer to Fig. 7 and describes in detail; 2 is capacitance sensor Level Detection module, please refer to Fig. 4 and Fig. 8 and describes in detail; 3 for reducing motor drips speed control molding piece, please refer to Fig. 5 and describes in detail; 4 is keyboard input module, please refer to Fig. 6 and describes in detail.
Central processing unit is selected the MSP430 super low-power consumption microprocessor of company of Texas Instruments (TI) for use, Level Detection employing capacitance sensor principle is handled in conjunction with the CDC chip QT1106 of atmel corp, drip speed and detect employing photo-electric principle, pulse detection adopts special use to refer to the arteries and veins oxygen detecting sensor, the control motor adopts the low-voltage DC speed-reducing, enough moments of torsion can be provided under limited voltage, to rotatablely move by leading screw is converted into rectilinear motion, by the flow rate of liquid of push rod rectilinear motion control by tube for transfusion.
Fig. 3 is a Level Detection and a speed control system subsystem structure block diagram of the quiet three-in-one arteries and veins transfusion monitoring system of the present invention.
Wherein 1 is plastic stent, tube for transfusion (3) can be placed in the groove behind the opening hinge formula loam cake, behind the loam cake that closes can with tube for transfusion (3) fixing with wherein; 2 is two electrodes of built-in capacitance sensor, please refer to Fig. 4 and describes in detail; 3 is tube for transfusion; 4 drip speed control molding piece for miniature retarding electrode, please refer to Fig. 5 and describe in detail.
When having in the tube for transfusion (3) or not having liquid to pass through, the dielectric constant of medium differs one more than the order of magnitude between two electrodes of capacitance sensor, therefore capacity commutator QT1106 (Fig. 8) can accurately make a distinction two kinds of situations, and master controller can know whether liquid level has reached this position like this.Thereby produce next step action: local buzzer and LED warning reminding, by wired or wireless mode this information is sent to nurse's platform, drip speed control system destructing (4) simultaneously and can will drip speed control to a rational value, be generally 2～3 droplets/minute.
Fig. 4 is the capacitance type sensor structural scheme of mechanism.
Wherein 1 is two electrodes of capacitance type sensor, and 2 is tube for transfusion.
Tube for transfusion and object wherein (air or various liquid medicine) are as the dielectric of capacitance sensor, when having flow of liquid to cross tube for transfusion (2), medium between two electrodes of capacitance sensor changes, because the dielectric constant of air and the dielectric constant of liquid medicine differ one more than the order of magnitude, and capacitor C is directly proportional with dielectric constant, therefore the capacitance variation that has no liquid to cause in the tube for transfusion can accurately be detected by capacity commutator (CDC) QT1106, central processing unit obtains current capacitance by inquiry, whether thereby can judge currently has flow of liquid to cross tube for transfusion, when capacitance fades to original 1/10 when following, indicate that transfusion finishes, system controller produces next step action.
Fig. 5 is miniature retarding electrode drop-speed controller structure sketch map.
Wherein 1 is plastic stent, the fixing left wall of tube for transfusion (2), 3 is straight-line motion mechanism leading screw unthreaded portion, 4 have threaded portion for the straight-line motion mechanism leading screw, 5 retarding electrode output shafts have threaded portion, 6 is retarding electrode output shaft unthreaded portion, and 7 is the retarding electrode reducing gear, and 8 is DC micromotor.
During system initialization, linear running mechanism (3,4) can not oppress tube for transfusion (2), after the transfusion beginning, drip speed according to system and set, control reducing motor (7,8) according to certain direction of rotation, the rotation certain hour, by motor output shaft (5,6) and the interlock of leading screw (3,4), will rotatablely move is converted to rectilinear motion, by leading screw (3,4) move left and right is unclamped or is clamped tube for transfusion (2), thereby has controlled the liquid velocity that flows through wherein.Drip speed sensors and then can feed back to current speed of controller,, in time several seconds, make a speed reach preset value so that the merits and demerits reducing motor carries out closed loop control to dripping speed.
Fig. 6 is the control system circuit theory diagrams of the three-in-one vein transfusion monitoring system of the present invention.
Wherein 1 is the jtag interface circuit; 2 is clock circuit; 3 are 5V commentaries on classics 3.3V power-switching circuit; 4 is the pulse detection interface circuit; 5 drip fast testing circuit for photo-electric, when not having liquid between D6 and the Q2, the light that D6 sends can drive Q2, SPEED_IN is output as logical zero, when between D6 and the Q2 liquid being arranged, because refractive index changes, the light Q2 that D2 sends does not receive, SPEED_IN is output as logical one, and central processing unit (8) can calculate a speed by the time of calculating between twice " 1 " in conjunction with certain algorithm; 6 is system reset circuit; 7 is the segment code type display driver circuit, adopts string and conversion chip 74HC595 with serial data and line output, drives the segment code type display, has saved limited port resource; 8 is central processing unit MSP430, adopts the characteristic of its super low-power consumption, when especially not connecting external power source in system, can farthest prolong battery working time; 9 are LED output and button inputting circuits; 10 is the minitype speed reducing motor control circuit, by its direction and PWM output carrying out moment of torsion are controlled, reaches the purpose that speed is dripped in control, please refer to Fig. 5 and describes its machinery realization in detail; 11 is buzzer drive circuit, and buzzer sends prompt tone by the 4KHz square wave that adds thereon.
The mode of the employing analog-digital converter sampling of button input (9) novelty is carried out.Button S1, S2 press different combinations with S3 or press when wherein some, and the magnitude of voltage at BUTTON place is neither identical, for the ADC analog-digital converter BUTTON are carried out voltage sample by 10 of MSP430 inside, can judge the situation that current key is pressed.The method as long as resistance is selected rationally, can adopt 1 analog input I/O port to realize countless many buttons in theory.
System sets transfusion speed by button (9) and (drips speed, unit: drip/minute), button (9) notice central processing unit MSP430 (8) begins to monitor and control procedure simultaneously, reach closed loop feedback control transfusion speed by a fast detection module (5) and a speed control molding piece (10) and reach setting value, and Level Detection module (Fig. 4, Fig. 8) when transfusion liquid reaches the pick off installation site, detecting transfusion and finishing, reach closed loop feedback and control transfusion speed reach setting value will drip speed be reduced to a rational minima 2～3 droplet/minute by dripping a fast detection module (5) and a speed control molding piece (10) this moment.Local buzzer (11) and LED (9) realize sound and light alarm simultaneously, and inform nurse's platform by wired or wireless mode.In whole infusion process, in case pulse transducer (4) detects unusually, also can send local buzzer (11) and LED (9) sound and light alarm, and inform nurse's platform by wired or wireless mode.
Fig. 7 is the backup battery power supply circuits, adopts battery powered when externally alternating current power supply does not connect, and when external power source connection and cell voltage deficiency, can charge to battery.External power source (V12) is by D4, through the mu balanced circuit powering load; During power failure, the control circuit powering load that battery is formed by MAX931 (U4) and Q2, D5, functions such as that this circuit has is anti-overcharge, automatic power, protection battery.
Wherein live part is mainly by LM358 (U33) and Q1 and peripheral cell formation.Power supply V12 forms constant-current source by TL317 (U1), through Q1 battery is carried out constant-current charge, is controlled by LM358.TL431 is the adjustable shunting a reference source of three ends that the good thermal stability energy is arranged, and it mainly acts on is to guarantee that voltage is stable.
U3A constitutes anti-overcharge circuit, if battery＞8.4V (1.4V X 6), then through R8, R11 dividing potential drop, 7. the voltage that produces of foot will be greater than its 8. voltage of foot positive input terminal at U3A negative input end the, its 1. foot output low level, Q1 ends, and no longer charges the battery.U3B constitutes display circuit, and LED1 is a charging indicator light.After if battery is full of, U3B 5. foot positive input terminal is a low level.Its 7. foot output low level then, LED1 extinguishes.LED2 is the power supply indication.
The battery powered holding circuit mainly was not made of MAX931 etc. when external power source connected.The wife MAX931 that MAXIM company produces is micropower, low pressure precision comparator, the datum of built-in 1.182V ± 2%, the electric current of output 2.5～11V, 40mA, and the parasitic disturbances that produces can eliminate the converter logic state time.Can in level detector, agitator, warning circuit, use.U4 the 5., 6. foot short circuit, eliminate sluggish, the 6. the datum 1.182V of foot divide through R2, R3 and be crimped to 8. foot (anode) of U4 the, as a voltage reference of anode.Battery excessively uses and can shorten battery service life, if cell voltage drops to 5V, then by cell voltage through R4 and R5 dividing potential drop and the 4. foot (negative terminal) of U4 that arrives, if negative terminal voltage is less than the positive terminal voltage of comparator, U4 is output as high level, enhancement mode P ditch place where Taoist rites are performed is imitated ware pipe Q2 and is ended, and cuts off the power supply of battery to power supply circuits.
Fig. 8 is electric capacity conversion chip (CDC) the electric capacity change-over circuit schematic diagram based on atmel corp.By SPI interface and central controller MSP430 communication, can export the capacitance of current capacitance sensor (Fig. 4) in real time, thereby can judge whether have liquid to pass through in the tube for transfusion.Whether detect transfusion should finish.
Claims (3)
1. title of the present invention is the intravenous injection monitoring system, it is characterized in that: be used for auxiliary intravenous injection process, can hang or be fixed on the existing infusion support, realize that injection finishes warning reminding, automatically drip pulse monitoring in control of velocity modulation joint and the infusion process, when infuse end or process have unusual generation, not only can in time remind the patient, can notify the nurse platform by the transmission means of wired or less radio-frequency simultaneously, so that in time handle.
2. intravenous injection monitoring system according to claim 1 is characterized in that: by the feedback information of liquid level detecting sensor, a fast detecting sensor and pulse detection pick off, perfection monitors and controls whole intravenous injection process.Whether the capacitance type liquid level detection module can detect transfusion accurately finishes, and drips speed control molding piece and then can tighten up tube for transfusion, controls to a rational minima thereby will drip speed.The pulse detection pick off can respond to whether bad infusion reaction is arranged in whole infusion process, in case pulse velocity exceeds normal range, then can local sound and light alarm, and information uploaded to nurse's platform.
3. intravenous injection monitoring system according to claim 1, it is characterized in that: transfusion warning subsystem, transfusion drip speed control subsystem and pulse control subsystem both can be united use, also can be at different application scenarios to use respectively, the system configuration reserve battery, when external direct current power supply does not connect, system can be powered by reserve battery, needs the occasion of toilet during convenience or the transfusion.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101014335A CN101987216A (en) | 2009-08-05 | 2009-08-05 | Three-in-one venous transfusion monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101014335A CN101987216A (en) | 2009-08-05 | 2009-08-05 | Three-in-one venous transfusion monitoring system |
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| CN101987216A true CN101987216A (en) | 2011-03-23 |
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| CN2009101014335A Pending CN101987216A (en) | 2009-08-05 | 2009-08-05 | Three-in-one venous transfusion monitoring system |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104189977A (en) * | 2014-09-26 | 2014-12-10 | 周可幸 | Automatic control device for liquid transfusion |
| CN104524665A (en) * | 2014-12-19 | 2015-04-22 | 上海大学 | Medical infusion monitoring device |
| CN105126201A (en) * | 2015-10-16 | 2015-12-09 | 西安汇智医疗器械有限公司 | Transfusion monitoring system capable of monitoring abnormal transfusion state and performing automatic intervention |
| CN106237447A (en) * | 2016-08-26 | 2016-12-21 | 莫慧光 | The intelligent transfusion supervising device of a kind of controllable infusion flow velocity and method |
| CN106326968A (en) * | 2015-06-18 | 2017-01-11 | 纬创资通股份有限公司 | Radio frequency module and related management system |
| CN106552305A (en) * | 2015-12-10 | 2017-04-05 | 长兴诚自动化工程设备有限公司 | Infusion liquid level monitoring system and its monitoring and control method |
| CN106560221A (en) * | 2015-12-10 | 2017-04-12 | 长兴诚自动化工程设备有限公司 | Medical transfusion level monitoring system and monitoring controlling method thereof |
| CN107583138A (en) * | 2017-09-15 | 2018-01-16 | 韩贻斌 | Paediatrics reaction type infusion device |
| CN111012974A (en) * | 2020-01-06 | 2020-04-17 | 常州市第一人民医院 | Intelligent venous transfusion monitoring system |
| CN112138244A (en) * | 2020-09-23 | 2020-12-29 | 浙江华健医用工程有限公司 | Monitoring system and monitoring method for clean operating room |
-
2009
- 2009-08-05 CN CN2009101014335A patent/CN101987216A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104189977A (en) * | 2014-09-26 | 2014-12-10 | 周可幸 | Automatic control device for liquid transfusion |
| CN104524665A (en) * | 2014-12-19 | 2015-04-22 | 上海大学 | Medical infusion monitoring device |
| US10515189B2 (en) | 2015-06-18 | 2019-12-24 | Wistron Corporation | Radio frequency module and related management system |
| CN106326968A (en) * | 2015-06-18 | 2017-01-11 | 纬创资通股份有限公司 | Radio frequency module and related management system |
| CN105126201A (en) * | 2015-10-16 | 2015-12-09 | 西安汇智医疗器械有限公司 | Transfusion monitoring system capable of monitoring abnormal transfusion state and performing automatic intervention |
| CN106560221A (en) * | 2015-12-10 | 2017-04-12 | 长兴诚自动化工程设备有限公司 | Medical transfusion level monitoring system and monitoring controlling method thereof |
| CN106552305A (en) * | 2015-12-10 | 2017-04-05 | 长兴诚自动化工程设备有限公司 | Infusion liquid level monitoring system and its monitoring and control method |
| CN106560221B (en) * | 2015-12-10 | 2019-11-12 | 长兴诚一自动化工程设备有限公司 | Transfusion liquid level monitoring system |
| CN106237447A (en) * | 2016-08-26 | 2016-12-21 | 莫慧光 | The intelligent transfusion supervising device of a kind of controllable infusion flow velocity and method |
| CN106237447B (en) * | 2016-08-26 | 2022-06-21 | 莫慧光 | Intelligent infusion monitoring device and method capable of controlling infusion flow rate |
| CN107583138A (en) * | 2017-09-15 | 2018-01-16 | 韩贻斌 | Paediatrics reaction type infusion device |
| CN107583138B (en) * | 2017-09-15 | 2020-08-04 | 韩贻斌 | Feedback type transfusion device for department of pediatrics |
| CN111012974A (en) * | 2020-01-06 | 2020-04-17 | 常州市第一人民医院 | Intelligent venous transfusion monitoring system |
| CN112138244A (en) * | 2020-09-23 | 2020-12-29 | 浙江华健医用工程有限公司 | Monitoring system and monitoring method for clean operating room |
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Application publication date: 20110323 |