CN204932467U - A kind of infusion alarm - Google Patents

A kind of infusion alarm Download PDF

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Publication number
CN204932467U
CN204932467U CN201520459350.4U CN201520459350U CN204932467U CN 204932467 U CN204932467 U CN 204932467U CN 201520459350 U CN201520459350 U CN 201520459350U CN 204932467 U CN204932467 U CN 204932467U
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China
Prior art keywords
microprocessor
resistance
voltage comparator
outfan
input
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Expired - Fee Related
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CN201520459350.4U
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Chinese (zh)
Inventor
张凯
麦毅源
吴伟斌
史晓裕
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Beijing Institute of Technology Zhuhai
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Beijing Institute of Technology Zhuhai
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Abstract

The utility model discloses a kind of infusion alarm, it photoelectric detective circuit, microprocessor and alarm module of comprising light source, detecting for the light sent light source, the outfan of described photoelectric detective circuit is connected with the input of microprocessor, and the outfan of described microprocessor is connected with the input of alarm module.By adopting infusion alarm of the present utility model, just can medical personnel be reminded in time to process accordingly as early as possible, avoid causing " blood back ", the even untoward reaction such as air embolism, be not only medical personnel, patient and bringing great convenience property of entourage, and the promptness of transfusion ending message acquisition can also be improved.This utility model can be widely used in medical transfusion field as a kind of infusion alarm.

Description

A kind of infusion alarm
Technical field
This utility model relates to detection alarm equipment, particularly relates to a kind of infusion alarm.
Background technology
As everyone knows, must process accordingly in time after transfusion terminates---pull out pin or change dressings, otherwise can cause " blood back ", the even untoward reaction such as air embolism.Timely process after transfusion terminates is then the timely acquisition depending on transfusion ending message.At present, transfusion ending message is obtained: a kind of medical personnel of being estimate the approximate time needed for transfusion according to the medicinal liquid flow velocity set and amount of liquid medicine mainly through two kinds of modes, the transfusion progress of in good time or sporadically inspection follow-up patient again, to realize the acquisition of transfusion ending message, but this method not only increases the workload of medical personnel, and it is unreliable, promptness is poor, because it depends on the experience of medical personnel to a great extent, error is comparatively large, and is difficult to avoid patient or its entourage midway to change medicinal liquid flow velocity; Another kind of, also be the most general at present, it is exactly the field observation of patient or its entourage, contact with medical personnel in time when transfusion terminates soon, to realize the timely acquisition of transfusion ending message, but patient is due to sick or be easily in the state of lethargy because of medication, and the time of transfusion is mostly longer, this brings no small burden then can to patient and entourage thereof, is neither beneficial to patient's recuperation, also easily meets with an accident.Therefore can obtain thus, obtain transfusion ending message in artificial mode, so not only give medical personnel, patient and entourage thereof bring great pressure to bear, and convenience and promptness are lowly.
Utility model content
In order to solve the problems of the technologies described above, the purpose of this utility model is to provide the simple infusion alarm of a kind of structure.
The technical scheme that this utility model adopts is: a kind of infusion alarm, it photoelectric detective circuit, microprocessor and alarm module of comprising light source, detecting for the light sent light source, the outfan of described photoelectric detective circuit is connected with the input of microprocessor, and the outfan of described microprocessor is connected with the input of alarm module.
Further, described photoelectric detective circuit comprises the first resistance, light sensitive diode, second resistance, first electric capacity and voltage comparator, one end of described first resistance, one end of second resistance and the positive link of the power supply of voltage comparator all connect supply voltage, the other end of described first resistance is connected with the positive pole of light sensitive diode and the negative input end of voltage comparator respectively, the power-link of described voltage comparator and the equal ground connection of negative pole of light sensitive diode, described one end of second resistance is connected with the positive input terminal of voltage comparator, the other end ground connection of described second resistance, described one end of first electric capacity is connected with the negative input end of voltage comparator, the other end ground connection of described first electric capacity, the outfan of described voltage comparator is connected with the input of microprocessor.
Further, described photoelectric detective circuit also comprises the first display lamp, and the positive pole of described first display lamp connects supply voltage, and the described negative pole of the first display lamp is connected with the outfan of voltage comparator.
Further, described second resistance is adjustable resistance.
Further, it also comprises signal amplification shaping circuit, and the outfan of described photoelectric detective circuit is connected with the input of microprocessor by signal amplification shaping circuit.
Further, it also comprises accumulator, and described accumulator is used for powering for light source, photoelectric detective circuit, microprocessor and alarm module.
Further, it also comprises for the charging module for charge in batteries.
Further, described alarm module comprises speaker, and the outfan of described microprocessor is connected with the input of speaker.
Further, described light source is near infrared light emitting diode.
The beneficial effects of the utility model are: at the end of transfusion, then there is no drop by between light source and photoelectric detective circuit, and by adopting alarm of the present utility model, just can detect and whether have drop by between light source and photoelectric detective circuit, drop is not had to have passed when detecting between light source and photoelectric detective circuit, then represent that transfusion terminates, now, microprocessor then drives alarm module to sound, so just, can medical personnel be reminded in time to process accordingly as early as possible, avoid causing " blood back ", the even untoward reaction such as air embolism.Can obtain thus, by using alarm of the present utility model, just greatly can alleviate the pressure burden of medical personnel, patient and entourage, be medical personnel, patient and bringing great convenience property of entourage, and can also improve the promptness that transfusion ending message obtains.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described further:
Fig. 1 is the structured flowchart of a kind of infusion alarm of this utility model;
Fig. 2 is a specific embodiment structured flowchart of a kind of infusion alarm of this utility model;
Fig. 3 is a specific embodiment circuit diagram of photoelectric detective circuit in a kind of infusion alarm of this utility model;
Fig. 4 is another specific embodiment circuit diagram of photoelectric detective circuit in a kind of infusion alarm of this utility model;
Fig. 5 is a specific embodiment circuit diagram of microprocessor in a kind of infusion alarm of this utility model;
Fig. 6 is a specific embodiment circuit diagram of charging module in a kind of infusion alarm of this utility model.
Detailed description of the invention
According to general knowledge, a Mo Feishi dropper is equipped with in infusion set conventional at present, described Mo Feishi dropper is the tube having air chamber that a diameter is larger, it is arranged on tube for transfusion, during transfusion, the liquid of instillation can by the drip nozzle of top drip form drop after instill at the bottom of the pipe of below, flow into again in tube for transfusion after temporary at the bottom of pipe, and at the end of transfusion, in Mo Feishi dropper, then do not have drop to pass through.Therefore, in order to make medical personnel can obtain transfusion ending message in time, this utility model provides a kind of infusion alarm based on medicinal liquid drop detection.
As shown in Figure 1, a kind of infusion alarm, it photoelectric detective circuit, microprocessor and alarm module of comprising light source, detecting for the light sent light source, the outfan of described photoelectric detective circuit is connected with the input of microprocessor, and the outfan of described microprocessor is connected with the input of alarm module.Due to the detection that alarm of the present utility model is based on medicinal liquid drop, therefore, described light source and photoelectric detective circuit should all be arranged on Mo Feishi dropper.And for the described photoelectric detective circuit detected for the light sent light source, after it is mainly used in carrying out opto-electronic conversion to the light received, threshold decision is carried out to the voltage signal that obtains after conversion, and according to judged result thus corresponding output high level signal and low level signal to microprocessor.
The operation principle of above-mentioned alarm is: during work, light source emits beam, when have drop by between light source and photoelectric detective circuit time, drop can reflect some light and absorb, and now, the light received by photoelectric detective circuit is almost nil, or be a small amount of, that is, now the magnitude of voltage of voltage signal that obtains after carrying out opto-electronic conversion to the light received of photoelectric detective circuit is almost nil, or is lower;
When do not have drop by between light source and photoelectric detective circuit time, the light that light source sends is not by drop absorption and reflection, therefore now, the intensity of the light received by photoelectric detective circuit is comparatively large, and the magnitude of voltage of the voltage signal that so described photoelectric detective circuit obtains after carrying out opto-electronic conversion to the light received is then larger;
After photoelectric detective circuit carries out opto-electronic conversion, photoelectric detective circuit just carries out threshold decision to the voltage signal obtained after conversion, and according to judged result thus corresponding output high level signal and low level signal to microprocessor, thus make in the process that drop is low, photoelectric detective circuit output pulse signal is to microprocessor, like this when described microprocessor detects that the signal that photoelectric detective circuit exports is pulse signal, then represent, Mo Feishi dropper has drop to pass through, transfusion does not also terminate, and when microprocessor detects that the signal that photoelectric detective circuit exports is not pulse signal, then represent that in Mo Feishi dropper, drop does not pass through, transfusion terminates, now, microprocessor just exports a drive singal to alarm module makes it sound, so just, medical personnel can be reminded in time, patient and entourage's transfusion have terminated to process as early as possible.Can obtain thus, by using alarm of the present utility model, just greatly can alleviate the pressure burden of medical personnel, patient and entourage, be medical personnel, patient and bringing great convenience property of entourage, and can also improve the promptness that transfusion ending message obtains.In addition, this utility model also have structure simple, be easy to operation, without the need to directly contacting with medicinal liquid thus the advantage such as cause that medicinal liquid is polluted.
As shown in Figure 2, be further used as preferred embodiment, it also comprises signal amplification shaping circuit, and the outfan of described photoelectric detective circuit is connected with the input of microprocessor by signal amplification shaping circuit.
Be further used as preferred embodiment, it also comprises accumulator, described accumulator is used for powering for light source, photoelectric detective circuit, microprocessor and alarm module, and namely described accumulator is light source, photoelectric detective circuit, microprocessor and alarm module provide supply voltage.In addition, described accumulator is also for signal amplification shaping circuit is powered.
Be further used as preferred embodiment, it also comprises for the charging module for charge in batteries.
As shown in Figure 3, be further used as preferred embodiment, described photoelectric detective circuit comprises the first resistance R1, light sensitive diode VD, second resistance R2, first electric capacity C1 and voltage comparator U2A, one end of described first resistance R1, one end of second resistance R2 and the positive link of power supply of voltage comparator U2A all connect supply voltage, the other end of described first resistance R1 is connected with the positive pole of light sensitive diode VD and the negative input end of voltage comparator U2A respectively, the power-link of described voltage comparator U2A and the equal ground connection of negative pole of light sensitive diode VD, one end of described second resistance R2 is connected with the positive input terminal of voltage comparator U2A, the other end ground connection of described second resistance R2, one end of described first electric capacity C1 is connected with the negative input end of voltage comparator U2A, the other end ground connection of described first electric capacity C1, the described outfan of voltage comparator U2A is connected with the input of microprocessor.
As shown in Figure 4, be further used as preferred embodiment, described photoelectric detective circuit also comprises the first display lamp, and the positive pole of described first display lamp connects supply voltage, and the negative pole of described first display lamp is connected with the outfan of voltage comparator U2A.
As shown in Figure 4, be further used as preferred embodiment, described second resistance R2 is adjustable resistance.
Be further used as preferred embodiment, described alarm module comprises speaker, and the outfan of described microprocessor is connected with the input of speaker.
Be further used as preferred embodiment, as shown in Figure 3 and Figure 4, described light source L1 is near infrared light emitting diode.Now, described light sensitive diode VD is near-infrared light sensitive diode.But described light source L1 is not limited near infrared light emitting diode.
A specific embodiment of the present utility model
As shown in Figures 1 to 4, photoelectric detective circuit, microprocessor and speaker that a kind of infusion alarm comprises light source L1, detects for the light sent light source L1, the outfan of described photoelectric detective circuit is connected with the input of microprocessor, and the outfan of described microprocessor is connected with the input of speaker;
Described photoelectric detective circuit comprises the first resistance R1, light sensitive diode VD, second resistance R2, first electric capacity C1 and voltage comparator U2A, one end of described first resistance R1, one end of second resistance R2 and the positive link of power supply of voltage comparator U2A all connect supply voltage, the other end of described first resistance R1 is connected with the positive pole of light sensitive diode VD and the negative input end of voltage comparator U2A respectively, the power-of described voltage comparator U2A connects the equal ground connection of negative pole that is extreme and light sensitive diode VD, one end of described second resistance R2 is connected with the positive input terminal of voltage comparator U2A, the other end ground connection of described second resistance R2, one end of described first electric capacity C1 is connected with the negative input end of voltage comparator U2A, the other end ground connection of described first electric capacity C1, the described outfan of voltage comparator U2A is connected with the input of microprocessor.As shown in Figure 3 and Figure 4, the positive pole of described light source L1 is by the 5th resistance R5 and then be connected with supply voltage, and the minus earth of light source L1, and for the 3rd resistance R3 in Fig. 4 and the 4th resistance R4, it can be arranged according to practical situation;
Described light source L1 is near infrared light emitting diode, and described light sensitive diode VD is near-infrared light sensitive diode.
For above-mentioned alarm, its concrete work process is: during work, light source L1 emits beam, when drop passes through between light source L1 and light sensitive diode VD, medicinal liquid absorbs and reflecting part light, unglazed or only a small amount of luminous energy is received by light sensitive diode VD, now, the reverse current of light sensitive diode VD is very little, thus the voltage making the negative input end of voltage comparator U2A input is close to zero, therefore now, the voltage that the large and negative input end of the voltage that the positive input terminal of voltage comparator U2A inputs inputs, thus make voltage comparator U2A export a high level, when drop does not pass through between light source L1 and light sensitive diode VD, the light intensity of the light that light sensitive diode VD receives is larger, thus the voltage making the negative input end of voltage comparator U2A input is larger, be greater than the voltage that positive input terminal inputs, therefore now voltage comparator U2A then exports a low level, can obtain thus, when there being drop to be interrupted between light source L1 and light sensitive diode VD, namely when transfusion is not over yet, optical detection circuit can produce a pulse signal and be sent to microprocessor, therefore, described timing microprocessor ground carries out detection to the signal of telecommunication that photoelectric detective circuit exports and judges, when the signal detecting that photoelectric detective circuit exports is pulse signal, then represent that now transfusion is not over yet, otherwise, then representing now infuses has terminated, so now, microprocessor just to export a drive singal to speaker makes it sound, thus remind medical personnel, patient and entourage's transfusion have terminated to process accordingly as early as possible.
Preferably, as shown in Figure 4, described photoelectric detective circuit also comprises the first display lamp, and the first described display lamp is a light emitting diode L2, the positive pole of described light emitting diode L2 is connected with supply voltage, its negative pole is then connected with the outfan of voltage comparator U2A, therefore, when voltage comparator U2A exports a high level, due to the unilateal conduction effect of light emitting diode L2, therefore now light emitting diode L2 can't light, otherwise, when voltage comparator U2A exports a low level, light emitting diode L2 just can light.Can obtain thus, when drop passes through, light emitting diode L2 just can light, thus prompting now transfusion is not over yet.
Preferably, the second described resistance R2 is adjustable resistance, so just can regulate the voltage that the positive input terminal of voltage comparator U2A inputs, thus greatly improves the operating flexibility of this alarm.
As shown in Figure 2, preferably, it also comprises signal amplification shaping circuit, and the outfan of described photoelectric detective circuit is connected with the input of microprocessor by signal amplification shaping circuit.And the concrete electronic circuit schematic of described microprocessor as shown in Figure 5.
Preferably, it also comprises accumulator, and described accumulator is used for powering for light source, photoelectric detective circuit, microprocessor and alarm module; It also comprises for the charging module for charge in batteries.The concrete electronic circuit schematic of described charging module as shown in Figure 6.For described charging module, as shown in Figure 6, its operation principle is: P1 interface is for accessing charge power supply, when the charge power supply that P1 interface accesses is greater than power supply low voltage test threshold values and the beginning of charging chip in charging module can input termination high level, charging chip just starts to charge to accumulator, and light emitting diode L3 can be lit, CHRG holds output low level; And when the voltage of accumulator is close to 4.2V voltage, charged electrical fails to be convened for lack of a quorum and reduces gradually, charging chip then enters constant-voltage charge pattern, stops charging cycle.
Obtained by above-mentioned, the advantage that alarm of the present utility model has is as follows:
1, medical personnel, patient and entourage can be made in time to obtain transfusion ending message, and greatly reduce the pressure burden of medical personnel, patient and entourage, and improve promptness and convenience;
2, structure is simple and be easy to operation, and this alarm is without the need to directly contacting with medicinal liquid, thus avoids polluting medicinal liquid;
3, this alarm is directly arranged in the outer surface of Mo Feishi dropper, and therefore, signal detection process does not cause any harmful effect to instillation process;
4, adopt accumulator and for the charging module for charge in batteries, the safety that this alarm uses can be improved.
Finally it is emphasized that, this utility model only relates to structural improvement, do not relate to the improvement on software approach, although the microprocessor in this utility model relates to the content of date processing, but it can adopt prior art means to realize, in data processing method, there is not any improvement, therefore, this utility model does not relate to the improvement in the methods such as date processing, does not namely relate to the improvement on any software.
More than that better enforcement of the present utility model is illustrated, but this utility model is created and is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent variations or replacement under the prerequisite without prejudice to this utility model spirit, and these equivalent distortion or replacement are all included in the application's claim limited range.

Claims (9)

1. an infusion alarm, it is characterized in that: it photoelectric detective circuit, microprocessor and alarm module of comprising light source, detecting for the light sent light source, the outfan of described photoelectric detective circuit is connected with the input of microprocessor, and the outfan of described microprocessor is connected with the input of alarm module.
2. a kind of infusion alarm according to claim 1, it is characterized in that: described photoelectric detective circuit comprises the first resistance, light sensitive diode, second resistance, first electric capacity and voltage comparator, one end of described first resistance, one end of second resistance and the positive link of the power supply of voltage comparator all connect supply voltage, the other end of described first resistance is connected with the positive pole of light sensitive diode and the negative input end of voltage comparator respectively, the power-link of described voltage comparator and the equal ground connection of negative pole of light sensitive diode, described one end of second resistance is connected with the positive input terminal of voltage comparator, the other end ground connection of described second resistance, described one end of first electric capacity is connected with the negative input end of voltage comparator, the other end ground connection of described first electric capacity, the outfan of described voltage comparator is connected with the input of microprocessor.
3. a kind of infusion alarm according to claim 2, it is characterized in that: described photoelectric detective circuit also comprises the first display lamp, the positive pole of described first display lamp connects supply voltage, and the described negative pole of the first display lamp is connected with the outfan of voltage comparator.
4. a kind of infusion alarm according to Claims 2 or 3, is characterized in that: described second resistance is adjustable resistance.
5. a kind of infusion alarm according to any one of claim 1-3, is characterized in that: it also comprises signal amplification shaping circuit, and the outfan of described photoelectric detective circuit is connected with the input of microprocessor by signal amplification shaping circuit.
6. a kind of infusion alarm according to any one of claim 1-3, is characterized in that: it also comprises accumulator, and described accumulator is used for powering for light source, photoelectric detective circuit, microprocessor and alarm module.
7. a kind of infusion alarm according to claim 6, is characterized in that: it also comprises for the charging module for charge in batteries.
8. a kind of infusion alarm according to any one of claim 1-3, it is characterized in that: described alarm module comprises speaker, the outfan of described microprocessor is connected with the input of speaker.
9. a kind of infusion alarm according to any one of claim 1-3, is characterized in that: described light source is near infrared light emitting diode.
CN201520459350.4U 2015-06-29 2015-06-29 A kind of infusion alarm Expired - Fee Related CN204932467U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106798578A (en) * 2017-03-06 2017-06-06 桂林市威诺敦医疗器械有限公司 The skin test instrument of electrode tip anti-dropout
TWI600444B (en) * 2016-02-03 2017-10-01 金宙科技有限公司 A device of liquid flow measurement
CN112618377A (en) * 2021-01-05 2021-04-09 北京麦康医疗器械有限公司 Infusion pipeline blockage and bubble detection device of enteral nutrition pump
CN113066267A (en) * 2021-03-18 2021-07-02 中山大学附属第一医院 Medicine identification alarm device and method and medicine box

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI600444B (en) * 2016-02-03 2017-10-01 金宙科技有限公司 A device of liquid flow measurement
CN106798578A (en) * 2017-03-06 2017-06-06 桂林市威诺敦医疗器械有限公司 The skin test instrument of electrode tip anti-dropout
CN112618377A (en) * 2021-01-05 2021-04-09 北京麦康医疗器械有限公司 Infusion pipeline blockage and bubble detection device of enteral nutrition pump
CN113066267A (en) * 2021-03-18 2021-07-02 中山大学附属第一医院 Medicine identification alarm device and method and medicine box

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Granted publication date: 20160106

Termination date: 20170629