CN203001586U - Medical dripping monitoring system - Google Patents
Medical dripping monitoring system Download PDFInfo
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- CN203001586U CN203001586U CN 201320029731 CN201320029731U CN203001586U CN 203001586 U CN203001586 U CN 203001586U CN 201320029731 CN201320029731 CN 201320029731 CN 201320029731 U CN201320029731 U CN 201320029731U CN 203001586 U CN203001586 U CN 203001586U
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- photoelectric sensor
- control circuit
- transfusion
- motor
- binding nut
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Abstract
The utility model provides a medical dripping monitoring system and relates to liquid level monitoring equipment. The medical dripping monitoring system is provided with an infrared light-emitting diode (LED), an upper photoelectric sensor, a lower photoelectric sensor, a transfusion dropper clamping device, a control circuit, an alarm circuit and a power supply. The infrared LED is arranged on the upper portion of one side of a transfusion bottle. The upper photoelectric sensor and the lower photoelectric sensor are respectively arranged on the middle portion and the lower portion of the other side of the transfusion bottle. The transfusion dropper clamping device is provided with a motor, an upper clamping nut, a lower clamping nut and a case. Threads are respectively arranged on a motor rotating shaft, the upper clamping nut and the lower clamping nut. The threads on the motor rotating shaft are connected with the threads on the upper clamping nut and the lower clamping nut in a threaded mode. The upper photoelectric sensor and the lower photoelectric sensor are respectively and electrically connected with an input end of the control circuit. The motor and the alarm circuit are respectively and electrically connected with an output end of the control circuit. The infrared LED, the upper photoelectric sensor, the lower photoelectric sensor, the motor, the control circuit and the alarm circuit are electrically connected with the power supply. As photoelectric detection technology is adopted and detection is carried out through a non-contact method, the medical dripping monitoring system is high in precision, good in accuracy, low in photoelectric device price, reliable, simple and compact in integrated structure, good in reliability, and easy to produce and assemble.
Description
Technical field
This utility model relates to a kind of level monitoring equipment, especially relates to the Medical transfusion monitoring system.
Background technology
When patient has an intravenous drip, after medicinal liquid is totally lost soon, if the danger such as backflow of blood, air Injection blood vessel will occur the untimely infusion set of closing.So usually to avoid danger when transfusion, patient must keep clear-headed and observes constantly or need the special messenger to nurse prompting aside.Patient has misgivings with regard to the heart like this, can't be had a rest fully.By special messenger's nurse, also time-consuming bothersome, and inadvertent, also easy cause danger consequence.
The patent of relevant drop monitoring, alarming is existing a lot, for example Chinese patent 201020123179.7 utilizes measurement transfusion bag weight to judge whether drop finishes, this method is the not high liquid waste that causes of precision not only, and to change corresponding intrument to medicinal liquid bottle or the medicinal fluid bag of different size, use trouble; And for example Chinese patent 201020234074.9 is inserted induction apparatus the inside of transfusion drip tube, easily pollutes medicinal liquid, can be with and serve other problem; And for example Chinese patent 201020547388.4 has just been mentioned the use contactless liquid level sensor, but all not mentioned to the concrete principle and methods for using them of sensor etc., still difficult the realization; Chinese patent 201120159582.X is absorbed by liquid with by air the decline that different variable quantities judges liquid level according to light for another example, and precision itself is very low, and the variation of surrounding light light and shade has a great impact it, easily causes erroneous judgement.At present, medical field does not also have really practical, sensitivity and reliably uses again simple low-cost fuction monitoring device for infusion.
Summary of the invention
The purpose of this utility model is to provide a kind of Medical transfusion monitoring system.
This utility model is provided with infrared LED, upper photoelectric sensor, lower photoelectric sensor, transfusion drip tube clamping device, control circuit, warning circuit and power supply;
Described infrared LED is located at transfusion bottle one upper lateral part, and described upper photoelectric sensor and lower photoelectric sensor are located at respectively transfusion bottle opposite side middle part and bottom; Described transfusion drip tube clamping device is provided with motor, upper binding nut, lower binding nut and housing; On machine shaft, be equipped with screw thread on upper binding nut and lower binding nut, the screw thread on the screw thread on machine shaft and upper binding nut and lower binding nut is spirally connected; Upper photoelectric sensor, lower photoelectric sensor are electrically connected to the input of control circuit respectively, motor and warning circuit are electrically connected to the control circuit outfan respectively, and infrared LED, upper photoelectric sensor, lower photoelectric sensor, motor, control circuit and warning circuit are electrically connected to power supply.
Described control circuit can comprise microprocessor, voltage comparator and driving relay, and described upper binding nut and lower binding nut preferably are being provided with projection by transfusion drip tube one side.
The utility model has the advantage of:
(1) this utility model adopts photoelectric detecting technology, is to detect with contactless method.By different liquid level positions, the refraction angle difference of light is judged to monitor the variation of dropper liquid level, precision is high, and accuracy is good, and photoelectric device is cheap and reliable.
(2) this utility model uses the nut motion of different rotation directions on small machine band moving axis, make its mutually near or separate and control opening and stopping of dropper.Overall structure is not only very simple compact, good reliability, and easily produce and assemble.
(3) this utility model can adopt two groups of button cell power supplies, when one group of electric weight exhausts soon, can switch to an other Battery pack power supply.Reliability is high, and can not working because of outage meets accident.
Description of drawings
Fig. 1 is that the structure of this utility model embodiment forms schematic diagram.
Fig. 2 is level monitoring principle and the process schematic diagram of this utility model embodiment.
Fig. 3 is the structural principle schematic diagram of the clamp mechanism of this utility model embodiment.
Fig. 4 is the circuit theory diagrams of this utility model embodiment.
The specific embodiment
Below in conjunction with drawings and Examples, this utility model is further described.
Referring to Fig. 1～4, this utility model embodiment is provided with infrared LED 1, upper photoelectric sensor Q1, lower photoelectric sensor Q2, transfusion drip tube clamping device, control circuit, warning circuit and power supply; Described infrared LED 1 is located at transfusion bottle A one upper lateral part a, and described upper photoelectric sensor Q1 and lower photoelectric sensor Q2 are located at respectively transfusion bottle A opposite side middle part b and bottom c; Described transfusion drip tube clamping device is provided with motor M, upper binding nut 32, lower binding nut 33 and housing 34; Be equipped with screw thread on the rotating shaft M1 of motor M, upper binding nut 32 and lower binding nut 33, the screw thread on the screw thread on the rotating shaft M1 of motor M and upper binding nut 32 and lower binding nut 33 is spirally connected; Upper photoelectric sensor Q1, lower photoelectric sensor Q2 are electrically connected to the input of control circuit respectively, motor M and warning circuit are electrically connected to the control circuit outfan respectively, and infrared LED 1, upper photoelectric sensor Q1, lower photoelectric sensor Q2, motor M, control circuit and warning circuit are electrically connected to power supply.Described control circuit can comprise Micro-processor MCV, voltage comparator C and driving relay J, and described upper binding nut 32 and lower binding nut 33 preferably are being provided with projection T by transfusion drip tube B one side.
The light of infrared LED 1 by the aperture of transmitting terminal after at a certain angle θ be slanted through a place of transfusion drip tube B.Because the refractive index of aqueous solution is about 1.33 and the refractive index of air is 1, thus after the deflection of light certain angle in the place's outgoing of b point, be radiated on photoelectric sensor Q1, make photoconductive resistance sharply reduce.When liquid level drops to a point when following, incident ray is refracted to transfusion drip tube B bottom after injecting liquid level, just light can't be detected at the b place, at this moment the photoconductive resistance of going up photoelectric sensor Q1 can sharply increase again.And for lower photoelectric sensor Q2, c place Infrared not during normal infusion so resistance is very large, and drops to the c point when following when liquid level, and the light of sensor just shines directly into the c place, and lower photoelectric sensor Q2 receives light, and resistance sharply reduces.
Clamping device such as Fig. 3 have attacked screw thread on machine shaft M1, and put supporting upper binding nut 32 and lower binding nut 33.The female thread of left side nut is dextrorotation, and the female thread of right side nut is left-handed, and their relative medial surface have smooth projection T.Two nuts are rotated to the ad-hoc location specific range in advance, and transfusion drip tube B passes through in the middle of both.A side of left side nut and right side nut nestles up housing 34, and when machine shaft M1 rotated, nut was blocked and can't rotate by housing, can only advance or retreat along axle.
Referring to Fig. 4, when single-chip microprocessor MCU is judged medicinal liquid and is soon dripped off by the timing variations of INT1 and INT2 pin, send signal just for the I/O mouth, drive external circuit and make the motor M forward, the left side nut along screw thread translation to the right, the right side nut with identical speed along screw thread translation left.Two nuts make liquid stop flowing near the extruding transfusion drip tube mutually.Single-chip microprocessor MCU will drive buzzer Y warning by the I/O mouth simultaneously.
Because the sound of buzzer Y can affect patient's rest, so after the short time of reporting to the police, program is write low level to this I/O mouth 1 again, close buzzer Y.And according to the pitch l of screw thread on motor shaft, and motor speed n revolutions per second, when electric machine rotation t after second two nut relative motioies the distance of 2 * t * n * l, control appropriate time and at this moment infuse and will be stopped and dropper can be by excessive compression.
In Fig. 4, upper photoelectric sensor Q1 is connected with external interrupt entrance pin INT1, the INT2 of single-chip microprocessor MCU respectively with lower photoelectric sensor Q2.Infusing, upper photoelectric sensor Q1 is subject to illumination when normal, makes its photoconductive resistance value very little, and according to voltage divider principle, INT1 will detect high level always.Lower photoelectric sensor Q2 is not subject to illumination, and the photoconductive resistance resistance is very large, and according to voltage divider principle, INT2 will detect low level always.
When liquid level descended, light will depart from, and at first went up photoelectric sensor Q1 and will can't accept illumination, and it is large that resistance becomes, and the INT1 pin of single-chip microcomputer becomes low level from high level.After following some seconds, liquid level drops to c, and lower photoelectric sensor Q2 will receive the illumination resistance and diminish, and the INT2 pin of single-chip microprocessor MCU just becomes high level from low level.
Think just when only having Single Chip Microcomputer (SCM) program INT1, INT2 pin to be detected with such timing variations that medicinal liquid is totally lost at once, just press from both sides stream and report to the police.When the actions such as patient gets up, goes to toilet cause transfusion drip tube liquid level pipe to rock or bubble the variation such as is filled with and can touch warning.Can not cause erroneous judgement, stability is high.
In Fig. 4 circuit theory diagrams, switch SW 1 and switch SW 2 are used for respectively controlling the counter-rotating of motor M and stopping of buzzer Y.Press switch SW 1 after infusion-completed, the motor M counter-rotating, left side nut and right side nut move along opposite direction and are separated from each other.Transfusion drip tube is conducting or remove again just, and is very easy to use.Clear-headed or when not wanting to hear the chimes of doom of buzzer Y as patient, can cut-off switch SW2, buzzer Y just is closed, but whole device other parts still can work.
Due to the voltage comparator C battery E1 voltage in gather using all the time, and compare with other one group of reserve battery E2 voltage.Voltage drop when in use battery E1 does not have electricity soon, voltage comparator C can judge and export under-voltage signal, and single-chip microprocessor MCU monitors this under-voltage signal, drives relay J and switches to reserve battery E2 power supply, drive simultaneously an external LED lamp D flicker, carry out alarm.
Control core is single-chip microcomputer, and the signal of upper photoelectric sensor Q1 and lower photoelectric sensor Q2 sequential and the interval time of two interruptions of single-chip microcomputer judgement, judges whether that with this liquid level decline drop will finish respectively as the pin that interrupts entering single-chip microcomputer.When meeting the phenomenon of drop normal termination, will provide two paths of signals: one tunnel signal controlling and drive motors rotate the suitable number of turns, make two nuts clamp transfusion and stop; Another road signal driver buzzer carries out the warning of certain hour.
Circuit also comprises the power supply monitoring module, and whole device adopts the button cell power supply of two groups of small sizes, wherein one group of power supply when normally using, and another group is reserve battery.When the battery electric quantity in using soon runs out of, voltage can drop to certain limit, pass through voltage comparator, single-chip microcomputer can monitor the undervoltage condition of battery, the LED lamp flicker that drives peripheral hardware is reported to the police, and the medical worker changes battery with prompting, will drive change-over switch simultaneously, make power supply forward other one group of reserve battery power supply to, be perfectly safe with assurance reliable.
Claims (2)
1. the Medical transfusion monitoring system, is characterized in that being provided with infrared LED, upper photoelectric sensor, lower photoelectric sensor, transfusion drip tube clamping device, control circuit, warning circuit and power supply;
Described infrared LED is located at transfusion bottle one upper lateral part, and described upper photoelectric sensor and lower photoelectric sensor are located at respectively transfusion bottle opposite side middle part and bottom; Described transfusion drip tube clamping device is provided with motor, upper binding nut, lower binding nut and housing; On machine shaft, be equipped with screw thread on upper binding nut and lower binding nut, the screw thread on the screw thread on machine shaft and upper binding nut and lower binding nut is spirally connected; Upper photoelectric sensor, lower photoelectric sensor are electrically connected to the input of control circuit respectively, motor and warning circuit are electrically connected to the control circuit outfan respectively, and infrared LED, upper photoelectric sensor, lower photoelectric sensor, motor, control circuit and warning circuit are electrically connected to power supply.
2. Medical transfusion monitoring system as claimed in claim 1, is characterized in that described upper binding nut and lower binding nut are being provided with projection by transfusion drip tube one side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320029731 CN203001586U (en) | 2013-01-18 | 2013-01-18 | Medical dripping monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320029731 CN203001586U (en) | 2013-01-18 | 2013-01-18 | Medical dripping monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203001586U true CN203001586U (en) | 2013-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320029731 Expired - Fee Related CN203001586U (en) | 2013-01-18 | 2013-01-18 | Medical dripping monitoring system |
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| Country | Link |
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| CN (1) | CN203001586U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105148351A (en) * | 2015-07-31 | 2015-12-16 | 杨迪文 | Infusion tube capable of preventing air from entering inside |
| CN105498037A (en) * | 2014-09-26 | 2016-04-20 | 无锡市贝尔康电子研究所 | Monitoring system for medical injection |
| CN105879153A (en) * | 2016-03-30 | 2016-08-24 | 徐慧 | Medical drip reminding system |
| CN108211049A (en) * | 2016-12-21 | 2018-06-29 | 财团法人工业技术研究院 | Intravenous infusion medication monitoring device and method |
| CN109041882A (en) * | 2018-07-18 | 2018-12-21 | 三亚新大兴园林生态有限公司 | A kind of trees automatic infusion device and its method with prompting function |
-
2013
- 2013-01-18 CN CN 201320029731 patent/CN203001586U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105498037A (en) * | 2014-09-26 | 2016-04-20 | 无锡市贝尔康电子研究所 | Monitoring system for medical injection |
| CN105148351A (en) * | 2015-07-31 | 2015-12-16 | 杨迪文 | Infusion tube capable of preventing air from entering inside |
| CN105879153A (en) * | 2016-03-30 | 2016-08-24 | 徐慧 | Medical drip reminding system |
| CN108211049A (en) * | 2016-12-21 | 2018-06-29 | 财团法人工业技术研究院 | Intravenous infusion medication monitoring device and method |
| CN109041882A (en) * | 2018-07-18 | 2018-12-21 | 三亚新大兴园林生态有限公司 | A kind of trees automatic infusion device and its method with prompting function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20180118 |