CN101130117B - Portable monitoring device for hanging drop of vein - Google Patents
Portable monitoring device for hanging drop of vein Download PDFInfo
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- CN101130117B CN101130117B CN2006100303758A CN200610030375A CN101130117B CN 101130117 B CN101130117 B CN 101130117B CN 2006100303758 A CN2006100303758 A CN 2006100303758A CN 200610030375 A CN200610030375 A CN 200610030375A CN 101130117 B CN101130117 B CN 101130117B
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- liquid level
- microprocessor
- vein
- hanging drop
- monitoring terminal
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Abstract
The invention discloses a portable vein drip monitoring device, which comprises the following parts: liquid level sensor, which generates different electric signals according to different liquid level; microprocessor, which connects the liquid level sensor to produce current in the liquid level sensor and receives electric signal from liquid level sensor to process the electric signal to obtain the liquid level data of transfusion bottle to transmit to the liquid level data; monitoring terminal, which connects the microprocessor to send alarm when the received liquid level data is below the preset liquid level. The invention is portable to carry with ingenious structure and low cost, which improves the reliability and precision.
Description
Technical field:
The present invention relates to the Portable surveillance of transfusion catheter, particularly portable monitoring device for hanging drop of vein.
Background technology:
In the hospital two types of transfusion systems are arranged at present.A kind of pump that is to use, another kind is to use gravity.The pump transfusion system is very expensive, and safeguards difficult.Therefore many medical personnel select to use traditional gravity transfusion system.Gravity venous transfusion (hang drip) system is made up of following three parts: 1, infusion bottle, comprise medical use liquid and on air; 2, tube for transfusion, one of tube for transfusion is connected with infusion bottle through the liquid pin, is used for accepting this medical use liquid; The other end of tube for transfusion is received intravenous needle; Inject venous patient to this medical use liquid, in this tube for transfusion, also be provided with a flow switch, be used for manually controlling flow stream velocity; 3, air hose, an end of air hose is connected with atmosphere, and as air intlet, the other end of air hose is connected with infusion bottle through air tube, is used for to replenishing the air in the infusion bottle.When the medical use liquid in the infusion bottle is reduced to predetermined preset liquid level (when liquid is soon lost), this infusion bottle must be changed, otherwise air might get into transfusion system and cause serious malpractice.
At present, patient or nurse must often artificially keep watch on the transfusion liquid level, and bring in constant renewal in new infusion bottle.This becomes medical personnel's bears greatly, particularly at night.Therefore hospital and patient press for the warning system of a venous transfusion.
The U.S. Pat Pat.No.3375716 of Hersch has invented a kind of liquid measure determinator, and it comprises that one can only measure the sensing capacitance of liquid measure in the container.Time circuit has been used in the invention of Hersch, and certainty of measurement and reliability are very poor.
People's such as Phelps U.S. Pat Pat.No.3390577 has invented a kind of drop detection system.People's such as Phelps invention only limits to detect drop, and the precision of this system and reliability are all very poor.
The U.S. Pat Pat.No.3641543 of Rigby has invented a kind of low liquid level sensor and liquid drop speed detector.They only can survey low liquid level and liquid drop speed and higher for installation requirement, require ground connection.
The U.S. Pat Pat.No.3939360 of Jackson has invented liquid level sensor and electrode group.The invention of Jackson needs three capacitor boards to survey electric capacity.This circuit uses analogue signal to survey electric capacity, so its accuracy and reliability is bad.
People's such as Berman U.S. Pat Pat.No.4749988 has invented a kind of contactless liquid level appearance.People's such as Berman invention requires external shielded conductor ground connection to avoid the interference of extraneous counter electrode, is not to take device therefore.
The U.S. Pat Pat.No.6964278 of Tschanz has invented a kind of non-contact liquid level pin.His invention is used to measure the liquid level of boiler and other container, therefore needs tubular glass.In addition, this liquid container must be a metal material, and infusion bottle generally all is a vial, and is therefore also improper.
Summary of the invention:
An object of the present invention is to provide a kind of portable monitoring device for hanging drop of vein with degree of precision and reliability.
To achieve these goals, technical scheme of the present invention is: portable monitoring device for hanging drop of vein, it is characterized in that it comprises liquid level sensor, and this liquid level sensor comprises at least two electrodes that are connected with infusion bottle; Microprocessor, this microprocessor is connected with said two electrodes at least, is used for producing electric current at these at least two electrodes, and surveys and analyze this current signal, gives monitoring terminal with liquid level signal; Monitoring terminal, this monitoring terminal is connected with microprocessor, reports to the police according to liquid level signal.
According to one embodiment of present invention, at least two electrodes are at least 2 battery lead plates that are installed in the infusion bottle outside; Microprocessor comprises control device; This control device is connected with battery lead plate wherein; The another battery lead plate is connected with the input of receiving device; The outfan of receiving device is connected with the input of sniffer, and the outfan of sniffer is connected with the input of blood processor, and the outfan of blood processor is connected with the input of conveyer device; Monitoring terminal comprises the warning devices that is connected with the conveyer device outfan.
According to another embodiment of the invention, at least two electrodes are one that is installed in liquid pin at least 1 battery lead plate and the infusion bottle in the infusion bottle outside or the air tube; Microprocessor comprises control device; One in this control device and the said electrode is connected; In the said electrode another is connected with the input of receiving device; The outfan of receiving device is connected with the input of sniffer, and the outfan of sniffer is connected with the input of blood processor, and the outfan of blood processor is connected with the input of conveyer device; Monitoring terminal comprises the warning devices that is connected with the conveyer device outfan.
According to another embodiment of the present invention, these at least two electrodes are respectively air tube and liquid pin in the infusion bottle; Microprocessor comprises control device; One in this control device and the said electrode is connected; In the said electrode another is connected with the input of receiving device, and the outfan of receiving device is connected with the input of blood processor, and the outfan of blood processor is connected with the input of conveyer device; Monitoring terminal comprises the warning devices that is connected with the conveyer device outfan.
Portable monitoring device for hanging drop of vein of the present invention can send warning when liquid level is reduced to preset liquid level, easy to use, and delicate structure, and cost of manufacture is low, and degree of accuracy is high, good reliability.
Description of drawings:
Fig. 1 is the sketch map of first embodiment of the invention
Fig. 2 is another user mode figure of first embodiment of the invention
Fig. 3 is the block diagram of microprocessor in the first embodiment of the invention
Fig. 4 is the block diagram of another kind of microprocessor
Fig. 5 is the block diagram of warning devices among the present invention
Fig. 6 is the block diagram of another monitoring terminal of the present invention
Fig. 7 is the sketch map of second embodiment of the invention
Fig. 8 is the sketch map of third embodiment of the invention
Fig. 9 is the block diagram of the microprocessor of third embodiment of the invention
The specific embodiment:
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Fig. 1 is the sketch map of first embodiment of the invention.This portable monitoring device for hanging drop of vein can be measured the liquid level of medical liquid 10 in the infusion bottle 11, and sends warning when medical liquid 10 drops to preset liquid level in infusion bottle 11.This hanging drop of vein system comprises an infusion bottle 11, and bottle contains the air 12 of medical use liquid 10 and medical use liquid 10 tops.One end of liquid pipe 15 is provided with liquid pin 13, and an end of trachea 16 is provided with air tube 14, and liquid pin 13 all inserts infusion bottle 11 with air tube 14.The supporting of hard materials such as infusion bottle 11 useable glass or duroplasts also can be processed with soft plastic bag.
This portable monitoring device for hanging drop of vein comprises a liquid level sensor 20, one microprocessors 30 and a monitoring terminal 40, and this device also can be supplied power by external power supply by customer requirements by battery 50 power supplies.Wherein liquid level sensor 20 comprises at least 2 battery lead plates 201,202, and this battery lead plate 201,202 can be installed in the relative both sides of infusion bottle 11, in order to the transmission alternating current.Microprocessor 30 can produce alternating current between said at least 2 electrodes (201,202), and surveys the electrical quantity of alternating current, analyzes this electrical quantity and obtains the liquid level data in the infusion bottle 11, and deliver to monitoring terminal 40 to this liquid level data.The electrical quantity of reflection liquid level comprises following at least a: voltage, electric current, reactance, phase place and frequency etc.This liquid level data comprises the liquid level in any moment infusion bottle 11, the fiducial value of flow stream velocity and preset liquid level in the infusion process.This monitoring terminal 40 comprises consistent warning devices, and when medical use liquid 10 was reduced to preset liquid level, it can be seen alarm signal off and start the alarm to patient and nurse.
In general electrical environment, can lead barricade 203,204 at least one of battery lead plate 201,202 arranged outside.This barricade 203,204 and electrode 201,202 insulation, and with a zero potential reference point, connect like the negative pole of battery 50, also can electrical interference noise in the barricade be connected to microprocessor 30 in addition, in addition noise filtering is handled.Simultaneously, battery lead plate 201,202 adopts coaxial cable 205 with being connected of microprocessor 30; 206, battery lead plate 201,202 passes through this coaxial cable 205 with microprocessor 30; 206 center conductor connects, this coaxial cable 20E, external shielding layer one end of 20F with can lead barricade 203; 204 link to each other, and the other end links to each other with the negative pole of a zero potential reference point such as battery 50.In addition, the other end of this external shielding layer also can be connected to microprocessor 30 and disturb filtration treatment.To such an extent as to if too strong this monitoring device cisco unity malfunction of environment electric noise then adds interference blanking unit and eliminates environmental interference in microprocessor 30.Two, with the parallel outside that places infusion bottle 11 of 2 counter electrode, use difference processing to signal or electrical quantity, also can remove environmental interference.This system is portable so there is no need to avoiding environmental interference ground connection.This coaxial cable not only can reduce noise jamming, also can reduce signal attenuation.
Fig. 2 is another user mode figure of first embodiment of the invention, and Fig. 2 is that with the different of Fig. 1 these at least 2 battery lead plates 207,208 are set in parallel in a side of infusion bottle 11.In this user mode, can lead the outside that barricade 209 is placed on battery lead plate 207,208 with one.Coaxial cable 210,211 is adopted in being connected of battery lead plate 207,208 and microprocessor 30, only the external shielding layer of two coaxial cables 218,211 simultaneously with can lead barricade 209 and be connected.
This liquid level sensor 20L can use electric bridge to survey the signal of telecommunication in the alternating current.This electric bridge comprises at least two battery lead plates.
Fig. 3 is the block diagram of a typical micro-processor 30.Microprocessor 30 comprises control device 31, in order to (201,202 among Fig. 1,207,208 among Fig. 2) generation alternating current between electrode; Receiving device 32 is in order to receive the signal of telecommunication in the alternating current; Sniffer 33 is in order to survey the electrical quantity in the signal of telecommunication; Blood processor 34 is in order to analyze electrical quantity and to obtain liquid level data; Output device 35 is in order to the output liquid level data.More than various devices can be contained in the same chip, also can be made into one chip or circuit comes work.Control device 31 comprises up to following a kind of: agitator, oscillating circuit, logic circuit etc.Receiving device 32 is a kind of below comprising at least: input port, amplifier and filter etc.Sniffer 33 is a kind of below comprising at least: electric capacity is to electric pressure converter, difference channel and voltameter etc.Blood processor 34 comprises following at least a: signal interface, and AD converter, digital memory, digital processing, or logic circuit etc.Output device 35 is a kind of below comprising at least: delivery outlet, and output lead, or antenna etc.
Fig. 4 is the block diagram of another kind of microprocessor.This microprocessor comprises control device 31, in order to (201,202 among Fig. 1,207,208 among Fig. 2) generation alternating current between electrode; Receptor 32A is in order to accept the signal of telecommunication in the alternating current; Detector 331 is in order to survey the voltage signal in the signal of telecommunication; Signal interface 341 is used for the storage voltage signal; A/D converter 342 is used for converting voltage signal into digital signal; Digital memory 343 is used for storing digital signal; Processor 344 is used for analyzing digital signal and obtains liquid level data; Delivery outlet 351 is used for exporting liquid level data.All are controlled by cyclelog 36 with the work of upper-part, and these cyclelog 36 usefulness specific software are programmed and managed above all parts work, more than each parts can be contained in the chip piece, also can be made into independent circuit or chip.
Microprocessor among Fig. 3 and Fig. 4 also can comprise interference blanking unit, and the control device 31 in the microprocessor can produce the alternating current of various ways, and like narrow band signal, multiple-frequency signal adds coded signal.To different alternating currents, interference blanking unit also can adopt different forms.If use narrow band signal, this interference blanking unit comprises a narrow band filter, in order to take the signal in the arrowband and to remove the noise outside the arrowband; If use multiple-frequency signal, this interference blanking unit comprises sad analyzer in the good fortune, obtains correct signal and removes noise jamming in order to carry out in the good fortune sorrow analysis; Add coded signal if use, interference blanking unit comprises decoder, in order to signal decoding is obtained correct signal and removes noise jamming.
Fig. 5 is a kind of block diagram of typical monitoring terminal 40.This monitoring terminal 40 comprises a warning devices 41, is used for giving the alarm, and display device 42 is used for showing liquid level data at terminal screen.Wherein warning devices 41 can be a sound generator, and sound gives the alarm when liquid level is reduced to preset liquid level in infusion bottle 11.Warning devices 41 also can be the switching device that is connected with liquid pipe 15, cuts off infusion process when liquid level is reduced to preset liquid level in infusion bottle 11.Warning devices 41 can also comprise a signal network, is used for delivering to nurse station to liquid level data through wireless mode or wired mode.
Fig. 6 is the block diagram of another monitoring terminal of the present invention.Behind the infusion rate 482 input input ports of setting 481, comparator 483 compares the infusion rate 484 of infusion rate of setting and mensuration, and the result who obtains exports to electric switchgear 485, in order to control transfusion process.
Fig. 7 is the sketch map of second embodiment of the invention.Second embodiment is that with the difference of first embodiment liquid level sensor is different.In this second embodiment; The infusion bottle outside is provided with a battery lead plate 213; Other has a lead 214 to be connected with liquid pin 13 or air tube 14, and in the present embodiment, said liquid pin 13 or air tube 14 are another electrode; Battery lead plate 213 is connected with microprocessor 30 with a lead 214, is used for transmitting the alternating current that microprocessor 30 produces.Present embodiment is particularly useful for a kind of old-fashioned hanging drop of vein system, and liquid pin 13 all is made of metal with air tube 14 in this old-fashioned hanging drop of vein system.When an alternating current transmitted in battery lead plate 213 and lead 214, this alternating current to liquid pin 13 or air tube 14, to medical use liquid 10, at last to battery lead plate 213, can be measured the electrical quantity (like reactance) between medical use liquid 10 and the battery lead plate 213 through lead 214 thus.
In this embodiment, the method for elimination environmental interference is similar to described in first embodiment.Establish one in battery lead plate 213 outsides and can lead barricade 215, come connection electrode plate 213 and microprocessor 30 with a coaxial cable 216 simultaneously, lead 214 also uses coaxial cable.Coaxial cable 216 and 214 external shielding layer are connected to the negative pole of battery 50 and the zero-potential point of microprocessor 30.Make this monitoring device can't operate as normal if environmental noise is too strong, can be employed in the method that adds interference blanking unit in the microprocessor 30 and eliminate most of environmental interference.Also can be at microprocessor 30, battery 50 provides function of shielding with part monitoring terminal 40 peripheral hardware metal packaging boxes.
Fig. 8 is the sketch map of third embodiment of the invention.Liquid level sensor 20 comprises first lead 217 that is connected with air tube 14 and second lead 218 that is connected with liquid pin 13 among this embodiment.In the present embodiment, two electrodes are respectively liquid pin 13 and air tube 14, and it (can be direct current that microprocessor 30 can be created in electric current transmitted between two leads 217 and 218; Also can be to exchange); Electrical quantity in the probe current, the electrical quantity of liquid level in the analytical reactions infusion bottle 11 is when the liquid level in the infusion bottle 11 drops to preset liquid level; The signal that gives the alarm, alarm signal is the liquid level signal that sends monitoring terminal in the present embodiment.Monitoring terminal receives alarm signal and gives the alarm for patient and nurse.In order to eliminate environmental interference, these two leads 217 and 218 can be used coaxial cable, and its external shielding layer can be connected to a zero potential reference point, like the negative pole of battery 50.Also can adopt external packing box that function of shielding is provided.In the present embodiment, microprocessor is a signal processor 305, and monitoring terminal is a siren 402.
Fig. 9 is the block diagram according to a kind of microprocessor of the 3rd embodiment.Comprise control device 311 in this microprocessor 305, one in this control device 311 and first lead 217 and second lead 218 is connected, is used for producing electric current; Receiving device 322 with another is connected in first lead 217 and second lead 218, is used for receiving the electrical quantity from the electric current of liquid level sensor 20; Blood processor 345 is used to analyze the electrical quantity of receiving, and judges whether medical liquid 10 drops to preset low liquid level in the infusion bottle 11, and output device 352 is used for the signal that when liquid level drops to preset liquid level, gives the alarm.Report to the police behind the siren 402 receiving alarm signals.
Claims (5)
1. portable monitoring device for hanging drop of vein is characterized in that it comprises battery; Liquid level sensor, this liquid level sensor comprise at least two electrodes that are connected with infusion bottle; Microprocessor, this microprocessor is connected with said two electrodes at least, is used for producing electric current at these at least two electrodes, and surveys and analyze this current signal, gives monitoring terminal with liquid level signal; Monitoring terminal, this monitoring terminal is connected with microprocessor, reports to the police according to liquid level signal; Said at least two electrodes are at least 2 battery lead plates that are installed in the infusion bottle outside; Microprocessor comprises control device, receiving device, sniffer, blood processor and conveyer device; This control device is connected with battery lead plate wherein; The another battery lead plate is connected with the input of receiving device; The outfan of receiving device is connected with the input of sniffer, and the outfan of sniffer is connected with the input of blood processor, and the outfan of blood processor is connected with the input of conveyer device; Monitoring terminal comprises the warning devices that is connected with the conveyer device outfan.
2. portable monitoring device for hanging drop of vein as claimed in claim 1 is characterized in that said at least 2 electrodes are located at the relative both sides of infusion bottle.
3. portable monitoring device for hanging drop of vein as claimed in claim 1; It is characterized in that the electrode outside is provided with can lead barricade; Electrode adopts coaxial cable with being connected of microprocessor; External shielding layer one end of this coaxial cable with can lead barricade and be connected, the other end of external shielding layer is connected with the negative pole of battery.
4. like each described portable monitoring device for hanging drop of vein in the claim 1 to 3,
It is characterized in that monitoring terminal also comprises display device.
5. like each described portable monitoring device for hanging drop of vein in the claim 1 to 3,
It is characterized in that warning devices comprises sound generator, switching device, at least one in the signal network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100303758A CN101130117B (en) | 2006-08-24 | 2006-08-24 | Portable monitoring device for hanging drop of vein |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100303758A CN101130117B (en) | 2006-08-24 | 2006-08-24 | Portable monitoring device for hanging drop of vein |
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| Publication Number | Publication Date |
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| CN101130117A CN101130117A (en) | 2008-02-27 |
| CN101130117B true CN101130117B (en) | 2012-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2006100303758A Expired - Fee Related CN101130117B (en) | 2006-08-24 | 2006-08-24 | Portable monitoring device for hanging drop of vein |
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| CN (1) | CN101130117B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116695B (en) * | 2009-12-31 | 2012-12-26 | 北京谊安医疗系统股份有限公司 | Method and device for detecting transfusion pipeline |
| CN103041954A (en) * | 2011-10-13 | 2013-04-17 | 北大方正集团有限公司 | Liquid level alarm system for spin coating equipment |
| CN102813975A (en) * | 2012-09-14 | 2012-12-12 | 缪学明 | Method for monitoring transfusion based on effect of sudden change of dropping speed of needle head |
| CN103800968A (en) * | 2014-01-20 | 2014-05-21 | 哈尔滨博强机器人技术有限公司 | Intravenous drip automatic monitoring system |
| CN106075633A (en) * | 2016-06-15 | 2016-11-09 | 西安医学高等专科学校 | A kind of Multifunctional transfusion device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3390577A (en) * | 1965-09-24 | 1968-07-02 | Gen Instrument Corp | Monitoring system for fluid flow in drop form |
| US3641543A (en) * | 1969-06-09 | 1972-02-08 | Gordon Eng Co | Low-level detector and drop rate monitor, particularly for intravenous feeding apparatus |
| US3939360A (en) * | 1973-10-25 | 1976-02-17 | John A. Jackson | Liquid level sensor and electrode assembly therefor |
| CN86209779U (en) * | 1986-12-03 | 1988-02-10 | 杨迈 | Automatic controlled transfusion apparatus with alarm |
| CN2091159U (en) * | 1991-03-21 | 1991-12-25 | 归柽华 | Electrode type intravenous infusion alarm |
| CN2741579Y (en) * | 2004-10-11 | 2005-11-23 | 武汉大学 | Monitor for venous dripping |
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2006
- 2006-08-24 CN CN2006100303758A patent/CN101130117B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3390577A (en) * | 1965-09-24 | 1968-07-02 | Gen Instrument Corp | Monitoring system for fluid flow in drop form |
| US3641543A (en) * | 1969-06-09 | 1972-02-08 | Gordon Eng Co | Low-level detector and drop rate monitor, particularly for intravenous feeding apparatus |
| US3939360A (en) * | 1973-10-25 | 1976-02-17 | John A. Jackson | Liquid level sensor and electrode assembly therefor |
| CN86209779U (en) * | 1986-12-03 | 1988-02-10 | 杨迈 | Automatic controlled transfusion apparatus with alarm |
| CN2091159U (en) * | 1991-03-21 | 1991-12-25 | 归柽华 | Electrode type intravenous infusion alarm |
| CN2741579Y (en) * | 2004-10-11 | 2005-11-23 | 武汉大学 | Monitor for venous dripping |
Non-Patent Citations (1)
| Title |
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| 白凤娥，常晓明，张新日.基于SOC的输液滴速监视器设计.《计算机工程》.2005,第31卷(第14期),203-204. * |
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