CN105233368B - A kind of infusion alarm and control method thereof - Google Patents

Abstract

The invention discloses the parts such as a kind of infusion alarm and its control method, including hanging ring, hook, power supply, tension sensor, signal conditioning circuit, controller, working panel, loudspeaker.Control system is mainly that the signal using controller to tension sensor acquisition and after signal conditioning circuit improves is compared with setting alarming threshold value, when liquid drips off fastly, the output of tension sensor reaches setting alarming threshold value, and controller controls loudspeaker and issues alarm to remind nursing staff or timely close transfusion device of accompanying and attending to；Alarm can be also issued when the liquid quality that tension sensor monitors does not reduce in 2 minutes or reduction amount is less than or equal to 4 grams, in order to avoid patient is accidentally pressed onto or folds to infusion apparatus pipeline and influences fluid drip, or even normal therapeutic is influenced, causes malpractice.The present invention is at low cost, precision is high, small in size, easy to use, high reliablity, is convenient for medical institutions' widespread adoption.

Description

A kind of infusion alarm and its control method

Technical field

The present invention relates to a kind of medical monitoring and automation fields, and in particular to a kind of infusion alarm and its controlling partyMethod.

Background technique

Currently, venous transfusion is a kind of important administration route in clinical treatment, there is very important work in the treatmentWith.Patient needs nurse, accompanies and attends to or patient oneself often checks residual liquid quantity in infusion bottle in infusion, and according to needIt replaces liquid or pulls out transfusion needle.Since transfusion time is longer, patient or entourage inevitably neglect, and cannot find in timeLiquid has flowed sky in infusion bottle, leads to vein blood back, causes unnecessary loss and pain, or even threaten patient vitals.CauseThis, the infusion alarm that can be automatically reminded to when liquid will be finished just is very necessary.

Though current existing infusion pump function is relatively more comprehensive and precision is higher, equipment too expensive, it is unfavorable for a wide range ofIt promotes and applies；The existing infusion alarm structure using photovoltaic principals design is simple, easy to use, but is easy because of infusion apparatus pipeRoad inclination or bubble generate false alarm；The existing infusion alarm structure using spring scale repacking is simple, and cost is relatively low, butPrecision is too poor；Though the existing infusion alarm structure using pressure guidance is simple, precision is higher, there are the hidden of liquid pollutionSuffer from.

Summary of the invention

The purpose of the present invention is providing for deficiency existing for the above infusion alarm, one kind is at low cost, precision is high, bodyProduct small, easy to use, high reliablity, infusion alarm and its control method convenient for medical institutions' widespread adoption, improve shieldQuality is managed, medical-risk is reduced.

In order to achieve the above objectives, the present invention adopts the following technical scheme that；

A kind of infusion alarm including annunciator panel, is fixed on what annunciator panel top was used to connect with infusion supportHanging ring and annunciator panel bottom is connected to for hanging the hook of transfusion bottle；

Functional select button, the display for selecting and showing different size transfusion bottle are set on the annunciator panelScreen and cancellation alarm button；Annunciator panel is built-in with control alarm system；

The control alarm system includes the tension sensor connected with hook, receives tension sensor monitoring signalsThe signal that signal conditioning circuit, receiving signal manage circuit is used to judge the controller and controller of transfusion bottle quality change situationConnect the loudspeaker alarmed and for providing the power supply of electric energy for entire control system；

Function select button, display screen and the cancellation alarm button is connect with controller.

As a further improvement of the present invention, the power supply uses AAA battery.

As a further improvement of the present invention, the signal conditioning circuit mainly uses operational amplifier to pull sensingThe output signal of device is improved, and is handled to meet the stable simulation voltage signal that controller receives range.

As a further improvement of the present invention, the controller is using at least with the channel AD and four road DI/DO all the wayThe single-chip microcontroller in channel.

As a further improvement of the present invention, the cancellation alarm button is drawn a patient by conducting wire and is directly operatedLine traffic control cancel alarm button.

A kind of control method of infusion alarm, comprising the following steps:

Tension sensor detection quality when linking up with non-loaded is set as M₀；According to practical transfusion bottle specification, selected by functionIt selects button and selects corresponding transfusion bottle model, controller sets the alarming threshold value M for judging transfusion bottle quality change situation automatically₁；

Judge that controller receives tension sensor and monitors the quality linked up in time T₁Inside whether it is greater than M₀；If it is not, thenIt is judged as that no transfusion bottle, controller control whole system automatic shutdown；If so, being judged as has transfusion bottle to be infused；

In infusion process, tension sensor carries out real-time monitoring to transfusion bottle quality, and passes through signal conditioning circuit for signalController is passed to, controller is to current measurement value and setting alarming threshold value M₁Compared in real time, if meeting alert ifController driving loudspeaker are alarmed；Alert if refers to:

When the signal value that controller receives is greater than setting alarming threshold value M₁When, and signal value continuous time T₃Do not become insideChange or continuous time T₃Interior reduction amount is less than or equal to mass M₂When, it alarms；

When in duration T₂Interior real-time measurement values are less than or equal to setting alarming threshold value M₁When, controller control loudspeaker intoRow alarm；

Controller again compares current measurement value and setting alarming threshold value in real time after cancelling alarm.

Further, T₁It is 5 minutes, T₂It is 5 seconds, T₃It is 2 minutes, M₂It is 4 grams.

Further, M₁Setting value correspond to the transfusion bottle of different size, and M₁Quality be M₀+ sky transfusion bottle quality+sky infusion apparatus+ 25 grams of quality (25 grams of quality for remaining liq in infusion apparatus and transfusion bottle).

Further, the cancellation alarming step is to cancel alarm button using operation to cancel or cancel report using line traffic controlAlert button is cancelled.

Compared with the existing technology, the beneficial effects of the present invention are:

Infusion alarm of the invention is directed to infusion alarming problem, using tension sensor and control alarm system, utilizesAutomatic control mode realizes the automation and intelligence of infusion alarming, relative to traditional alarm technique, have it is higher canBy property, and it is at low cost, easy to use；The present invention reduces complicated mechanism design, not only mitigates because using Electrical Control TechnologyAlarm quality, reduces alarm volume, it is often more important that easy to operate, accuracy greatly improves.And cancellation is setAlarm button cancels alarm in time.

Tension sensor is directly connect with the hook of suspension transfusion bottle, real-time monitoring transfusion bottle quality is used for, relative to mechanicalInfusion alarm precision of weighing improves 10 times or more.

Further, the setting that line traffic control cancels alarm button facilitates patient oneself to operate and cancels alarm, convenient and practical.

The automatic control technology that control method of the invention uses, will alarm when can not only will drip off to liquid,And can alarm because patient is pressed onto or folds to accidentally caused by infusion apparatus pipeline to be infused slowly or stagnate, when transfusion bottle qualityCurrent measurement value be less than or equal to setting alarming threshold value when think that liquid has been finished；When transfusion bottle quality subtracts in continuous 2 minutesIt is a small amount of to think that infusion apparatus pipeline is pressed onto or reflexed accidentally when being less than or equal to 4 grams.Controller is used to judge the change of transfusion bottle qualityChange situation, drives loudspeaker to alarm if meeting alert if.At lower cost, higher intelligence is realized, is avoidedBecause without by the timely medication bring security risk of regulation.

Further, the present invention using automatic control system can real-time monitoring itself working condition, when continuous 5 minutes monitorIt, being capable of automatic shutdown when there is no transfusion bottle under to hook.In the case where not increasing nursing staff's workload, reach energy-efficient mesh's.

Further, infusion alarm of the invention and control system are at low cost, precision is high, small in size, easy to operate, reliableProperty it is high, be convenient for medical institutions' widespread adoption, provide the new think of of one kind for the research of Subsequent infusions alarm and control systemRoad has very important realistic meaning and researching value.

Detailed description of the invention

Invention is further described in detail with preferred embodiment with reference to the accompanying drawing.

Fig. 1 is the structural diagram of the present invention；

Fig. 2 is control system schematic illustration of the invention；

Fig. 3 is the control program flow diagram of automatic control system of the present invention.

In figure, 1 is hanging ring；2 be annunciator panel；3 be function select button；4 be display screen；5 be cancellation alarm button；6 be hook；7 cancel alarm button for line traffic control；8 be tension sensor；9 be signal conditioning circuit；10 be controller；11 be loudspeaker?；12 be power supply.

In Fig. 2, solid line represents power flow；Dotted line representation signal flow direction.

Specific embodiment

A kind of infusion alarm, when can drip off fastly on liquid simultaneously and infusion apparatus pipeline is forced into or folds to influence liquidThe two kinds of situations that instil accurately are alarmed, and infusion alarm includes hanging ring 1, hook 6, power supply 12, tension sensor 8, signal tuneManage the parts such as circuit 9, controller 10, working panel 2, loudspeaker 11.Wherein: hanging ring 1 and hook 6 be respectively used to infusion alarm withThe connection of infusion support and transfusion bottle；Power supply 12 uses AAA battery, for providing electric energy for entire alarm control circuit；Pull sensingDevice 8 is directly connect with the hook 6 of suspension transfusion bottle, is used for real-time monitoring transfusion bottle quality；Signal conditioning circuit 9 is mainly put using operationBig device improves the output signal of tension sensor 8, handles to meet the stable simulation signal that controller 10 receives range；Controller 10 is using at least with the single-chip microcontroller in the 1 road channel AD and the 4 road channels DI/DO.

Controller 10 is used to judge that the situation of change of transfusion bottle quality, specific judgment method to be as follows:

Loudspeaker 11 are driven to alarm if meeting alert if；When controller 10 monitors do not had on hook more than 5 minutesHave and control whole system automatic shutdown when hanging transfusion bottle, to save electric energy；The working panel 2 includes function select button and showsDisplay screen 4, for selecting and showing the transfusion bottle of different size；Alarm draws a cancellation alarm button 7 by conducting wire, in order toNurse and family members not aside in special circumstances, patient can directly operate cancellation alarm.

When dripping off fastly for liquid separately below and infusion apparatus pipeline is forced into or folds to influence two kinds of situations of fluid dripThe case where accurately being alarmed is illustrated:

Embodiment 1

Below for the alarm by infusion alarm when transfusion bottle liquid will drip off, infusion alarming of the present invention is illustratedThe working principle of device and its control system.It is infused the preparation stage, nursing staff is selected according to practical transfusion bottle specification by operating functionSelect button selection respective selection.In infusion process, amount of fluid is constantly reduced in transfusion bottle, tension sensor 8 to transfusion bottle quality intoRow real-time monitoring, and signal is passed to by controller 10 by signal conditioning circuit 9, controller 10 is to current measurement value and settingAlarming threshold value is compared in real time, and when real-time measurement values are for 5 seconds is less than or equal to setting alarming threshold value, controller 10 is controlledLoudspeaker 11 are alarmed, to prompt nursing staff, accompany and attend to or the timely close transfusion device of patient carries out transfusion bottle switching or pulls out needle etc.Operation.

Embodiment 2

Below for the alarm by infusion alarm when infusion apparatus pipeline, which is forced into or folds to, influences normal infusion, specificallyIllustrate the working principle of infusion alarm of the present invention and its control system.During normal infusion, it is understood that there may be patient becauseSituations such as turn, is pressed onto infusion apparatus pipeline accidentally or infusion apparatus pipeline reflexed is influenced normal infusion, or even infusion is caused to stopIt is stagnant, it influences normally to be administered, may cause malpractice under serious conditions.Controller 10 is constantly received by signal conditioning circuit 9The monitoring signals of tension sensor 8, when controller 10 to signal value setting alarming threshold value, and signal value continuous 2 has not yet been reachedIt alarms in time when minute (mass change is less than or equal to 4 grams in 2 minutes) very slow without variation or variation, to prompt to nursePersonnel accompany and attend to or patient checks infusion apparatus state in time, in order to avoid influence normal therapeutic.

Finally it should be noted that the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extentThe present invention is described in detail with reference to preferred embodiments for pipe, it should be understood by those ordinary skilled in the art that: stillIt can modify to a specific embodiment of the invention or some technical features can be equivalently replaced；Without departing from this hairThe spirit of bright technical solution should all cover within the scope of the technical scheme claimed by the invention.

Claims (4)

1. a kind of control method of infusion alarm, it is characterised in that: infusion alarm includes annunciator panel (2), is fixed onIt hanging ring (1) at the top of annunciator panel (2) for connect with infusion support and is connected to annunciator panel (2) bottom and is used to hang and hangThe hook (6) of bottle；

Functional select button (3), the display screen for showing different size transfusion bottle are set on the annunciator panel (2)(4) and cancel alarm button (5)；Annunciator panel (2) is built-in with control alarm system；

The control alarm system includes the tension sensor (8) connecting with hook (6), the prison for receiving tension sensor (8)The signal of the signal conditioning circuit (9), receiving signal reason circuit (9) of surveying signal is used to judge the control of transfusion bottle quality change situationDevice (10) processed connect the loudspeaker (11) alarmed with controller (10) and for providing the power supply of electric energy for entire control system(12)；

Function select button (3), display screen (4) and cancellation alarm button (5) is connect with controller (10)；

The signal conditioning circuit (9) mainly improves the output signal of tension sensor (8) using operational amplifier,Processing is to meet the stable simulation voltage signal that controller (10) receives range；

The controller (10) is using the single-chip microcontroller at least with the channel AD and the four road channels DI/DO all the way；

The control method of infusion alarm, comprising the following steps:

Set hook (6) it is non-loaded when tension sensor (8) detection quality as M₀；According to practical transfusion bottle specification, selected by functionIt selects button (3) and selects corresponding transfusion bottle model, controller (10) sets the alarming threshold value for judging transfusion bottle quality change situation automaticallyM₁；

Judge that controller (10) reception tension sensor (8) monitors the quality on hook (6) in time T₁Inside whether it is greater than M₀；If it is not, being then judged as no transfusion bottle, controller (10) controls whole system automatic shutdown；If so, being judged as has transfusion bottle progress defeatedLiquid；

In infusion process, tension sensor (8) carries out real-time monitoring to transfusion bottle quality, and will be believed by signal conditioning circuit (9)It number passes to controller (10), controller (10) is to current measurement value and setting alarming threshold value M₁Compared in real time, if meetingAlert if then alarm by controller (10) driving loudspeaker (11)；Alert if refers to:

When the signal value that controller (10) receives is greater than setting alarming threshold value M₁When, and signal value continuous time T₃Do not become insideChange or continuous time T₃Interior reduction amount is less than or equal to mass M₂When, it alarms；

When in duration T₂Interior real-time measurement values are less than or equal to setting alarming threshold value M₁When, controller (10) controls loudspeaker(11) it alarms；

Controller (10) again compares current measurement value and setting alarming threshold value in real time after cancelling alarm；

M₁Setting value correspond to the transfusion bottle of different size, and M₁Quality be M₀+ sky transfusion bottle quality++ 25 grams of quality of sky infusion apparatus；

The cancellation alarm button (5) draws the line traffic control that a patient directly operates by conducting wire and cancels alarm button (7).

2. a kind of control method of infusion alarm according to claim 1, it is characterised in that: the power supply (12) is adoptedWith AAA battery.

3. a kind of control method of infusion alarm according to claim 1, which is characterized in that T₁It is 5 minutes, T₂It is 5Second, T₃It is 2 minutes, M₂It is 4 grams.

4. a kind of control method of infusion alarm according to claim 1, which is characterized in that the cancellation, which is alarmed, to be walkedIt is rapid to cancel to be cancelled using operation cancellation alarm button (5) or cancelling alarm button (7) using line traffic control.