CN202236620U - Patient infusion ending alarm - Google Patents
Patient infusion ending alarm Download PDFInfo
- Publication number
- CN202236620U CN202236620U CN2011203818127U CN201120381812U CN202236620U CN 202236620 U CN202236620 U CN 202236620U CN 2011203818127 U CN2011203818127 U CN 2011203818127U CN 201120381812 U CN201120381812 U CN 201120381812U CN 202236620 U CN202236620 U CN 202236620U
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- CN
- China
- Prior art keywords
- phase inverter
- alarm
- darlington transistor
- transistor amplifier
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a patient infusion ending alarm which is characterized by comprising a power supply, a trough type photoelectric coupling detector, a phase inverter, a darlington transistor amplifier and a loudspeaker; the power supply is provided by a 5V voltage stabilizer; the photoelectric coupling detector is trough type MOCH22A of which a trench channel is clamped in a transparent infusion tube; different photoelectric signals are output by utilizing different characteristics of light refraction when the infusion tube is provided with liquid or is not provided with liquid; and the loudspeaker is controlled by the phase inverter and a darlington transistor amplifier circuit to make a sound and give out an alarm. The patient infusion ending alarm has the advantages of simple circuit, high sensitivity, low cost, high reliability, convenience in use and the like.
Description
Technical field
This utility model relates to alarm, is specifically related to the patient infusion alarm that finishes.
Background technology
Transfusion is that often use in hospital outpatient and ward; Patient is prone to sleeping when transfusion; Unmanned or the no signal prompting in back so the normal medicinal liquid of worrying is totally lost; Cause backflow of blood in tube for transfusion, to damage, the someone utilizes capacitance type sensor to design infusion alarm, because the dielectric constant of different liquids is different; Use and debug all very trouble, alarm has that circuit is simple, highly sensitive, with low cost, good reliability and advantage such as easy to use to utilize the patient infusion of grooved photoelectrical coupler design to finish.
Summary of the invention
This utility model problem to be solved is to above-mentioned technical deficiency, and how a kind of patient infusion alarm that finishes is provided, and this alarm warning reminding of after patient's medicinal liquid is totally lost, can in time sounding avoids backflow of blood in tube for transfusion, to damage; This infusion alarm has that circuit is simple, highly sensitive, with low cost, good reliability and advantage such as easy to use.
The technical problem that this utility model proposed is to solve like this: construct a kind of patient infusion alarm that finishes, it is characterized in that: comprise power supply, grooved photoelectricity coupled detector, phase inverter, Darlington transistor amplifier and speaker; Power supply 4.5V is provided by three joint miniature button cell series connection, and the photoelectricity coupled detector is the MOCH22A of grooved, snaps in transparent tube for transfusion in its conduit; The phototriode colelctor electrode connects resistor R 2 backs one end and links to each other with the anode end of controlling through switch SW, and another road of phototriode colelctor electrode is connected with phase inverter D1 through resistor R 3; The common base that Darlington transistor amplifier VT1-VT2 forms is connected with phase inverter D6 through resistor R 8; Speaker Y one end is connected switch SW control anode end, and the other end is connected with the common collector of Darlington transistor amplifier VT1-VT2; Capacitor C3 and capacitor C4 are connected in parallel between the anode end and negative pole end of switch SW control.
The beneficial effect of this utility model is: the patient infusion alarm that finishes has been installed on tube for transfusion; The warning reminding of after patient's medicinal liquid is totally lost, can in time sounding; Avoid backflow of blood in tube for transfusion, to cause the human injury, thereby more effectively protect people's life security; This patient infusion alarm that finishes is small and exquisite, and circuit structure is simple, and performance is safe and reliable, power saving and durable in use.
Description of drawings
Accompanying drawing 1 is the circuit structure diagram of this utility model.
The specific embodiment
Below in conjunction with accompanying drawing this utility model is further described.
Shown in accompanying drawing 1, IC is the grooved photoelectrical coupler that a model is MOCH22A, in its tank circuit, snaps in transparent tube for transfusion; When liquid being arranged in the tube for transfusion and not having liquid; Infrared ray to its input infrared transmitting tube emission has different coefficient of refraction, and the infrared light that the phototriode of its outfan received when the position of adjustment grooved optocoupler made liquid is the strongest, and this moment, grooved optocoupler outfan was low resistance state; The result of its equivalent resistor and R2 dividing potential drop makes phase inverter D1 input low level; High mean longitude D2 through exporting after the D1 anti-phase makes the D2 output low level after the anti-phase once more, diode VD1 forward bias, and the controlled oscillator of being made up of phase inverter D3, D4 can't starting of oscillation because of the effect of clamping down on of VD1; The D3 input low level, D4 exports high level; Equally, make the controlled oscillator that D5, D6 constitute also can't starting of oscillation because of the D4 output low level makes the VD2 forward bias, speaker Y is sounding not.When not having medicinal liquid in the tube for transfusion; Because the air refraction coefficient less than liquid, has changed original coefficient of refraction, the infrared luminous energy that phototriode can receive diminishes; Output is high-impedance state, and warp makes phase inverter D1 input high level and makes D2 output high level with the result of resistor R 2 dividing potential drops; Thereby diode VD1 reverse bias has been removed the control to controlled oscillator; The controlled oscillator starting oscillation that constitutes by D3, D4; Thereby the audio frequency controlled oscillator starting of oscillation that control is made up of D5, D6; After the Darlington transistor that the outfan output audio signal intermittently of D6 is formed via VT1, VT2 amplifies, promote the speaker sounding alarm, remind patient's medicinal liquid to be totally lost complete.
Component parameter: R1-R7 selects the carbon film resistor of 1/8W for use; Power supply adopts three joint miniature button cell series connection to provide; The IC photoelectrical coupler is selected the MOCH22A of grooved for use; C1 selects the 0.1uF/16V monolithic capacitor for use, and C2 selects 4700P/16V for use, and C3 selects the 220uF/16V aluminium electrolutic capacitor for use; VD1-VD2 selects the IN4148 diode for use; The D1-D6 phase inverter is selected SG54HCO4 for use; It is that 1/2W, impedance are 4 Ω micro wire coil loundspeakers that Y selects power for use.
This utility model also can be made various alternatives; More than through the specific embodiment by accompanying drawing 1 illustrated embodiment; Be that the foregoing of this utility model is done further explain, but should this be interpreted as that the scope of the theme that this utility model is above-mentioned only limits to described instance; Do not breaking away under the above-mentioned technological thought situation of this utility model, various replacements and change according to ordinary skill knowledge and customary means are made all should be included in the scope of this utility model.
Claims (1)
1. patient infusion alarm that finishes is characterized in that: comprise power supply, grooved photoelectricity coupled detector, phase inverter, Darlington transistor amplifier and speaker; Power supply 4.5V is provided by three joint miniature button cell series connection, and the photoelectricity coupled detector is the MOCH22A of grooved, snaps in transparent tube for transfusion in its conduit; The phototriode colelctor electrode connects resistor R 2 backs one end and links to each other with the anode end of controlling through switch SW, and another road of phototriode colelctor electrode is connected with phase inverter D1 through resistor R 3; The common base that Darlington transistor amplifier VT1-VT2 forms is connected with phase inverter D6 through resistor R 8; Speaker Y one end is connected switch SW control anode end, and the other end is connected with the common collector of Darlington transistor amplifier VT1-VT2; Capacitor C3 and capacitor C4 are connected in parallel between the anode end and negative pole end of switch SW control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203818127U CN202236620U (en) | 2011-10-10 | 2011-10-10 | Patient infusion ending alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203818127U CN202236620U (en) | 2011-10-10 | 2011-10-10 | Patient infusion ending alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202236620U true CN202236620U (en) | 2012-05-30 |
Family
ID=46097934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203818127U Expired - Fee Related CN202236620U (en) | 2011-10-10 | 2011-10-10 | Patient infusion ending alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202236620U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106237446A (en) * | 2016-08-28 | 2016-12-21 | 鞠志玮 | Alarm for infusion |
-
2011
- 2011-10-10 CN CN2011203818127U patent/CN202236620U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106237446A (en) * | 2016-08-28 | 2016-12-21 | 鞠志玮 | Alarm for infusion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20121010 |