CN1306867A - Automatic display alarm for intravenous infusion - Google Patents
Automatic display alarm for intravenous infusion Download PDFInfo
- Publication number
- CN1306867A CN1306867A CN 00110076 CN00110076A CN1306867A CN 1306867 A CN1306867 A CN 1306867A CN 00110076 CN00110076 CN 00110076 CN 00110076 A CN00110076 A CN 00110076A CN 1306867 A CN1306867 A CN 1306867A
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- circuit
- drop
- automatic display
- intravenous infusion
- alarm
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The automatic display alarm for monitoring intravenous infusion has a liquid drop sensor comprising infrared emitter and infrared receiver set in the middle part of infusion funnel, an amplifying and shaping circuit connected to the sensor and two output branches, one to a time measuring and displaying circuit and the other to an alarm circuit.
Description
The present invention relates to medical instruments field, mainly is to be applied to the device in the hospital intravenous transfusion device monitored.
Present existing intravenous transfusion device does not have alarm signal when infusing to patient, for preventing malpractice, need patient or guardian to monitor the transfusion situation constantly, so just make nurse personnel spirit tired out easily, very easily carelessness, an absent-mindedness slightly just causes adverse consequences easily.In addition, some medicinal liquids needs fast dripping, and as SHUANGHUANLIAN, some medicine need drip slowly, and as erythromycin family, the speed that these snack made with traditional Chinese medicines drip mainly is to be estimated artificially by the nurse, and very science not is very big to the curative effect influence of medicinal liquid.
At problem set forth above, the invention provides a kind of automatic display alarm for intravenous infusion, need the nurse personnel when its purpose is to solve transfusion monitor and the speed of medicinal liquid drop such as estimates artificially at the problem of aspect existence.
The present invention comes to be realized by the following technical programs:
A kind of automatic display alarm for intravenous infusion is characterized in that: place in the middle of the dropping funnel of intravenous transfusion device is near, be provided with liquid drop sensor, and it is made up of RF transmitter and infrared receiver; An amplification integeral type circuit is connected with liquid drop sensor, and what be connected with the outfan of amplification integeral type circuit has two branch roads, and one is the measure of time display circuit, and one is warning circuit.
It is 38KHz that RF transmitter in the liquid drop sensor adopts carrier frequency.
Advantage of the present invention and effect:
The present invention compares with old infusion techn, old infusion techn needs human eye to estimate the interval of drop, error in dipping is big, directly be presented on the liquid crystal board and new technology is a interval (cycle) with drop, the interval of drop is pressed the explanation on the package insert, and is more direct like this, more accurate.Old infusion techn needs the people to pay close attention to the Liquid dropping bottle liquid level variation constantly, can not be careless and inadvertent.And new infusion techn makes it send alarm sound when transfusion finishes, and the reminds people transfusion has finished, and pulls out infusion needle.The people is freed from the work of the anxiety that stares at infusion bottle, alleviated people's mental burden.The present invention can accurately show the interval of drop, and can bring the security and comfort to patient, alleviates patient and family members' mental burden.
In addition, the patient who in hospital ward, infuses, if adopt the automatic display alarm of static transfusion, their time cycle and alarm signal also can adopt multi-path digital switch coding, send into by network in the computer of nurses' office, make the nurse just can recognize each patient infusion situation in the ward in office, promptly transfusion time, flow velocity all can come into plain view on display screen, improve nurse's work efficiency greatly.Overcome the deficiency of existing infusion techn, satisfy the modern medical service development of career.
Accompanying drawing 1 is a circuit block diagram of the present invention;
Accompanying drawing 2 is the scheme of installation of liquid drop sensor of the present invention;
Accompanying drawing 4 is receiving system circuit diagram of the present invention;
Accompanying drawing 5 is block diagram measuring period of the present invention;
Accompanying drawing 6 is period measurement of the present invention and display circuit figure.
The present invention is specifically described by embodiment below in conjunction with accompanying drawing:
The present invention utilizes photoelectric technology, electronic technology the drop interval to be shown, and send alarm signal when transfusion closes to an end.In accompanying drawing 1, liquid drop sensor is made up of RF transmitter, infrared receiver, and part 1 is a RF transmitter, disturbs for avoiding external light source, and it is the RF transmitter of 38KHz that emission light source device adopts carrier frequency, and physical circuit figure as shown in Figure 3.Part 2 is receiving systems, front end adopts infrared receiver and infrared ray amplifier, when drop drips when passing the light that emitter sends, the light signal power that receptor is received changes, receptor is converted to the signal of telecommunication with the light signal that changes, amplification integeral type circuit changes this signal amplification frequency-selecting, detection, integer into pulse signal, in the blanking time that demonstrates circuit demonstration drop respectively through the measure of time of part 3, signal discrimination circuit judges whether pulse finishes, thereby the alarm signal of sending, physical circuit figure is shown in accompanying drawing 4, accompanying drawing 6.
Working method of the present invention is as follows: place in the middle of the dropping funnel of existing intravenous transfusion device is near, be provided with liquid drop sensor, and as accompanying drawing 2, it is made up of RF transmitter, infrared receiver; Send carrier frequency 38KHz infrared pulse signal as the RF transmitter in the accompanying drawing 3, shine on the infrared receiver on the infrared detector.When drop passes the light that RF transmitter sends, the light intensity that infrared receiver is received changes, infrared receiver is converted into this variation the modulating pulse signal of telecommunication that equates with the drop time cycle, this signal delivers to that frequency selection circuit amplifies by amplifying, the pulse signal of frequency-selecting (38KHz carrier frequency pulse signal), detection output drop, again by the pulse shaping circuit with drop pulse signal integer, time-delay.This signal divides two-way again, one the tunnel delivers to timer, display, demonstrate the time cycle (pulse signal) of drop, the continuous decision circuitry of pulse is delivered on another road, this circuit is made up of rectification circuit, voltage comparator circuit, it converts the drop pulse signal to DC level, when pulse signal, high level is kept in rectification circuit output, the comparison circuit output low level, when having two pulses not receive continuously, the rectification circuit output low level, comparison circuit output high level triggers warning circuit, and the siren energized gives the alarm.(siren can adopt KD-9561, KD-9300 series special IC; Also can make dedicated voice transfusion warning integrated circuit).Specifically receiving circuit as shown in Figure 3: the circuit working principle is when drop passes light, to have changed RF transmitter D
1Inject the power of infrared receiver light, thereby make T
1The electric current of infrared receiver changes, and this changes via U
1The amplification frequency selection circuit of forming to 38KHz carrier frequency pulse signal amplify, frequency-selecting, detection, pass through U again
2Integer and lengthened pulse width make it become the electric impulse signal identical with the drop interval, the corresponding drop cycle of each pulse, pulse signal one tunnel is through the unlatching of gating circuit by-pass valve control, the unit clock signal under the control of valve, send into count display, as the T that satisfies condition
xT
bThe time, in period T
xInterior result to the clock signal counting is:
This result is exactly the time cycle of drop.Measuring Time cycle functional-block diagram and circuit theory are shown in accompanying drawing 5 and accompanying drawing 6.Another road pulse signal is delivered to by U
3, U
4The pulse decision circuitry of forming, wherein U
3Form half-wave rectifying circuit and U
4The voltage comparator of forming.When the pulse signal consecutive hours, full-wave rectifying circuit output high level, the voltage comparator output low level, alarm is lockable and does not work, when not having two pulse signals continuously, voltage comparator output high level triggers alarm and makes it send alarm sound, the reminds people transfusion finishes, and pulls out infusion needle.
Claims (2)
1, a kind of automatic display alarm for intravenous infusion is characterized in that: place in the middle of the dropping funnel of intravenous transfusion device is near, be provided with liquid drop sensor, and it is made up of RF transmitter and infrared receiver; An amplification integeral type circuit is connected with liquid drop sensor, and what be connected with the outfan of amplification integeral type circuit has two branch roads, and one is the measure of time display circuit, and one is warning circuit.
2, automatic display alarm for intravenous infusion according to claim 1 is characterized in that: it is 38KHz that the RF transmitter in the liquid drop sensor adopts carrier frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00110076 CN1306867A (en) | 2000-01-28 | 2000-01-28 | Automatic display alarm for intravenous infusion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00110076 CN1306867A (en) | 2000-01-28 | 2000-01-28 | Automatic display alarm for intravenous infusion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1306867A true CN1306867A (en) | 2001-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00110076 Pending CN1306867A (en) | 2000-01-28 | 2000-01-28 | Automatic display alarm for intravenous infusion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1306867A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269521A (en) * | 2011-07-08 | 2011-12-07 | 辽宁同辉科技发展有限公司 | Temperature regulating device for distillation experiment heating furnace |
| CN104977056A (en) * | 2014-04-08 | 2015-10-14 | 玛珂系统分析和开发有限公司 | Dosing valve |
| CN111790023A (en) * | 2020-06-22 | 2020-10-20 | 来邦科技股份公司 | Infusion detection system and method |
| CN115317720A (en) * | 2022-08-10 | 2022-11-11 | 广西盈赛数字科技有限公司 | Infusion monitor and dropping liquid signal detection processing method thereof |
-
2000
- 2000-01-28 CN CN 00110076 patent/CN1306867A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269521A (en) * | 2011-07-08 | 2011-12-07 | 辽宁同辉科技发展有限公司 | Temperature regulating device for distillation experiment heating furnace |
| CN104977056A (en) * | 2014-04-08 | 2015-10-14 | 玛珂系统分析和开发有限公司 | Dosing valve |
| CN111790023A (en) * | 2020-06-22 | 2020-10-20 | 来邦科技股份公司 | Infusion detection system and method |
| CN115317720A (en) * | 2022-08-10 | 2022-11-11 | 广西盈赛数字科技有限公司 | Infusion monitor and dropping liquid signal detection processing method thereof |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |