CN110812603A - Electronic transfusion alarm - Google Patents
Electronic transfusion alarm Download PDFInfo
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- CN110812603A CN110812603A CN201911140642.0A CN201911140642A CN110812603A CN 110812603 A CN110812603 A CN 110812603A CN 201911140642 A CN201911140642 A CN 201911140642A CN 110812603 A CN110812603 A CN 110812603A
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- Prior art keywords
- alarm
- module
- device shell
- sensor
- operational amplifier
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/172—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body electrical or electronic
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16831—Monitoring, detecting, signalling or eliminating infusion flow anomalies
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/18—General characteristics of the apparatus with alarm
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3331—Pressure; Flow
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- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention relates to the technical field of electronics, in particular to an electronic infusion alarm, which comprises a device shell, wherein a working circuit board is arranged in the device shell, the working circuit board is connected with an alarm indicator lamp, the alarm indicator lamp is arranged on the outer surface of the device shell, a buzzer and a range knob are arranged on the surface of the device shell, the lower end of the device shell is connected with a transfusion bottle hook, a hanging hole is arranged on the outer surface above the device shell, a pressure sensing device is arranged on the inner surface of the device shell, and a hardware system structure of the alarm consists of a direct-current power supply module, a sensing module, a control module and an alarm module, wherein the control module comprises an amplifying signal module, a range adjusting module and a; the alarm module comprises a buzzer and a light emitting diode, is low in manufacturing cost, simple in principle, simple and convenient to operate, convenient to popularize, easy to debug and good in application prospect.
Description
Technical Field
The invention relates to the technical field of electronics, in particular to an electronic infusion alarm.
Background
When patients are transfused in hospitals, nurses or family members are generally required to take care of the patients. However, the infusion time is generally long and the hospital is various, so that the condition that the hands are not enough frequently occurs inevitably. If no person is in care of the infusion apparatus, the patient needs to worry about the infusion process all the time in the infusion process, so that the patient is stressed greatly, and the patient cannot have a good rest during infusion. While not timely withdrawing the infusion needle may not present a life hazard, the appearance of venous return may present a level of disconcerting to patients who do not have substantial medical knowledge, affecting the normal functioning of the hospital. The electronic automatic infusion alarm can give an alarm in time when liquid drops are reduced to a certain amount, prompts a caregiver to pull out an infusion tube, relieves the burden of a patient and a bed partner, improves the nursing management level of a hospital and accelerates the modernization process.
Currently, there are many different principles and configurations of infusion alarms on the market, and there are mainly 3 principles to summarize: firstly, the photoelectric principle; secondly, weighing principle; the third is the drop counting principle.
There are also 2 principles that are not particularly broadly applicable: (1) the principle of electrode conduction. Because the liquid medicine has electric conductivity, when the liquid medicine is used up, the electric conductivity disappears, thereby realizing the purpose of checking whether the liquid medicine in the infusion bottle is used up. The method is low in cost, but certain potential safety hazards exist, for example, whether the medicine property of the medicine liquid is affected after the medicine liquid is electrified, and in addition, the work of disinfecting the medicine liquid by using an electrode every time is too complicated, so the method only stays at a theoretical level, the productivity cannot be formed, and the principle of the ultrasonic sensor is adopted, but a device based on the principle is expensive, complicated installation and debugging are needed, the reliability cannot be guaranteed, and the method is difficult to be widely applied to the detection of the liquid drops of the intravenous infusion.
Disclosure of Invention
The invention aims to provide an electronic transfusion alarm which is manufactured by adopting a pressure sensor, has simple principle, is less influenced by external physical interference factors such as sound, light, electricity, magnetism and the like and has small error aiming at the defects and the defects of the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention relates to an electronic infusion alarm, which comprises a device shell, wherein a working circuit board is arranged in the device shell, the working circuit board is connected with an alarm indicator lamp, the alarm indicator lamp is arranged on the outer surface of the device shell, a buzzer and a range knob are arranged on the surface of the device shell, the lower end of the device shell is connected with a transfusion bottle hook, a hanging hole is formed in the upper outer surface of the device shell, a pressure sensing device is arranged on the inner surface of the device shell, the hardware system structure of the alarm consists of a direct-current power supply module, a sensing module, a control module and an alarm module, wherein the control module comprises an amplification signal module, a range adjusting module and a control quality membrane block; the alarm module comprises a buzzer and a light emitting diode.
On the basis of the scheme, the direct current power supply module preferably directly supplies power to the sensing module, the control module and the alarm module.
On the basis of the scheme, preferably, the sensing module is used for generating tension through a hook for hanging the infusion bottle, and the pressure sensor records data and transmits the data to the working circuit board.
On the basis of the scheme, the pressure sensor is preferably a micro resistance bridge type weighing sensor, the sensing module is fixed at the top of the device shell, the influence of the mass of the device on the quality sensing of the sensor is eliminated, the sensor only senses the mass change of the infusion bottle, the sensing module mainly comprises the pressure sensor and a plastic plate matched with the pressure sensor, the two ends of the pressure sensor are respectively fixed with the plastic plate, and the two ends of the sensor are fixed between an upper plastic plate and a lower plastic plate in a cantilever beam type mode through screws.
On the basis of the scheme, the control part of the alarm is preferably composed of 3 parts, namely an operational amplifier, an adjustable knob resistance circuit and an NE555 timer, the amplification factor of the voltage is controlled by utilizing a deep negative feedback circuit built by an integrated operational amplifier and related resistors, and a weak voltage signal output by a sensor is amplified; the feedback circuit part of the operational amplifier is connected with a single-pole multi-throw rotary switch, each rotary contact is connected with a resistor with different resistance values, the voltage amplification factor of the operational amplifier is adjusted by adjusting the resistance value of the resistor, so that the voltage signal output by the operational amplifier is a voltage signal amplified by a specific factor, and knobs which are connected with the rotary switch and rotate to different positions and correspond to different alarm ranges are arranged outside the shell.
On the basis of the scheme, the direct-current power supply module preferably comprises 2 battery boxes, a power supply voltage stabilizing device and a power supply indicator light, and when the electric quantity is sufficient, the indicator light is always on; when the electric quantity is insufficient, the indicating lamp is turned off, and related personnel can be reminded to replace the battery.
After adopting the structure, the invention has the beneficial effects that: the application purpose of the infusion alarm is to clearly reflect the time when infusion is finished to accompanying personnel and enable the accompanying personnel to make appropriate reflection action, and the electronic infusion alarm accurately shows the alarm time from the above actual effect, thereby achieving the basic use requirement of the infusion alarm, converting a pressure signal into a weak electric signal to obtain the pressure change of a transfusion bottle, and fundamentally avoiding various defects of other induction modes; the pressure sensor is adopted for manufacturing, the principle is simple, the influence of external physical interference factors such as sound, light, electricity, magnetism and the like is low, and the error is small; the liquid quality is adjustable when the alarm is given by utilizing the resistance partial pressure, so that the corresponding threshold values can be set aiming at different medicine bottle specifications, and the method has the advantage of more humanization.
Drawings
FIG. 1 is a schematic diagram of the hardware system architecture of the present invention;
FIG. 2 is a schematic view of the overall structure of the present invention;
fig. 3 is a schematic diagram of a control portion of the present invention.
Fig. 4 is a flow chart of the operation of the present invention.
Description of reference numerals:
1. hanging holes; 2. a range knob; 3. a buzzer; 4. a working circuit board; 5. an alarm indicator light; 6. pressure transmission
A sensor; 7. a device housing; 8. a hanging bottle hook.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in fig. 1 to 4, the electronic infusion alarm comprises a device shell 7, wherein a working circuit board 4 is arranged in the device shell 7, the working circuit board 4 is connected with an alarm indicator lamp 5, the alarm indicator lamp 5 is arranged on the outer surface of the device shell 7, a buzzer 3 and a range knob 2 are arranged on the surface of the device shell 7, the lower end of the device shell 7 is connected with a transfusion bottle hook 8, a hanging hole 1 is formed in the outer surface above the device shell, a pressure sensing device 6 is arranged on the inner surface of the device shell, and a hardware system structure of the alarm comprises a direct current power supply module, a sensing module, a control module and an alarm module, wherein the control module comprises an amplification signal module, a range adjusting module and a control quality membrane block; the alarm module comprises a buzzer and a light emitting diode.
Furthermore, the direct current power supply module directly supplies power to the sensing module, the control module and the alarm module.
The sensing module is used for generating tension through a hook for hanging the infusion bottle, and the pressure sensor records data and transmits the data to the working circuit board.
The pressure sensor is a miniature resistance bridge type weighing sensor, a sensing module is fixed at the top of a device shell, the influence of the mass of the device on the quality of the sensor is eliminated, the sensor only senses the quality change of a transfusion bottle, the sensing module mainly comprises the pressure sensor and plastic plates matched with the pressure sensor, the plastic plates are respectively fixed at two ends of the pressure sensor, and the two ends of the sensor are fixed between an upper plastic plate and a lower plastic plate in a cantilever beam type mode through screws.
The control part of the alarm is electrically composed of 3 parts of an operational amplifier, an adjustable knob resistance circuit and an NE555 timer, the amplification factor of the voltage is controlled by using a deep negative feedback circuit built by an integrated operational amplifier and related resistors, and a weak voltage signal output by a sensor is amplified; the feedback circuit part of the operational amplifier is connected with a single-pole multi-throw rotary switch, each rotary contact is connected with a resistor with different resistance values, the voltage amplification factor of the operational amplifier is adjusted by adjusting the resistance value of the resistor, so that the voltage signal output by the operational amplifier is a voltage signal amplified by a specific factor, and knobs which are connected with the rotary switch and rotate to different positions and correspond to different alarm ranges are arranged outside the shell.
The direct current power supply module comprises 2 battery boxes, a power supply voltage stabilizing device and a power supply indicator light, and when the electric quantity is sufficient, the indicator light is always on; when the electric quantity is insufficient, the indicating lamp is turned off, and related personnel can be reminded to replace the battery.
The voltage signal amplified by the operational amplifier is transmitted into the signal input end of a Schmitt trigger circuit built by an NE555 timer through a lead. The Schmitt trigger can reshape and convert the amplified and slightly changed voltage signal into a step signal, generate logic '0' and logic '1', simply complete A/D conversion and generate a jump threshold alarm voltage. The NE555 timer used by people belongs to a bipolar type, and the timer of the type has strong driving capability and can completely drive the alarm part to normally work.
The moment of occurrence of a logic "1" is the moment of operation of the alarm portion. Because the threshold alarm voltage is not changed during the operation of the device, the operational amplifier part controls the output voltage of the operational amplifier by adjusting the voltage amplification factor through different resistance values so as to reach the time interval of the threshold alarm voltage, thereby equivalently setting the quality of the alarm liquid with different ranges and achieving the effect of alarming corresponding to different liquid qualities. The corresponding relation between the resistance value and the quality of the alarm liquid is fit by multiple test measurements to deduce an empirical formula.
The alarm circuit of the invention is formed by connecting a buzzer and a flash lamp in parallel (as shown in figures 2 and 3). The buzzer and the flash lamp are arranged outside the shell, when infusion is completed, the alarm effect is more obvious, and the output end of the NE555 timer outputs a step voltage signal generated by the control part and is connected in series with the alarm circuit. When logic '1' appears, the circuit works, the diode changes color and flashes, the buzzer sounds to alarm, and a patient is reminded to replace an infusion bottle.
The working process and the using method of the invention are as follows: (as shown in fig. 4) a circuit is built according to the principle, under the laboratory condition, an experimental prototype with a complete alarm function is manufactured, a user firstly sets the alarm quality through a multi-control switch according to the specification of an infusion bottle (bag), the infusion bottle is hung at a hook of the device, then a main switch is pressed, and a direct-current voltage stabilizing module supplies power to the whole device. When the infusion bottle begins to drip liquid, the liquid quality changes, the stress of a sensor connected with the infusion bottle hook changes along with the change of the liquid quality, and a weak voltage signal is output to the operational amplifier. The operational amplifier amplifies the incoming voltage by corresponding times according to the gear set by the multi-control switch at first. The amplified voltage signal is transmitted into an NE555 timer, and a Schmitt trigger circuit formed by the NE555 timer carries out shaping transformation on the voltage waveform, and the voltage waveform is converted into a step signal and then is transmitted into an alarm circuit. The alarm circuit judges the transmitted step signal, and for logic '0', the alarm circuit does not work and returns to a liquid dropping state; for logic '1', the alarm circuit is switched on, the buzzer sounds, the flash lamp flickers, and the device gives an alarm. And (4) the user turns off the main switch after the infusion is finished, the empty infusion bottle is taken down, and the alarm finishes one-time infusion alarm and finishes. If the device is to be used again, the above steps are repeated again.
The device is designed with the purposes of low manufacturing cost, simple principle and simple and convenient operation, is convenient to popularize and easy to debug, has good application prospect, can reduce the workload of nurses to a certain extent aiming at the current situation that the nursing proportion of China is seriously disordered, enables the nurses to more conveniently observe the state of an illness in the transfusion nursing process, better serves the transfusion patients, relieves the incomplete contradiction of the transfusion nursing caused by the disordered nursing proportion, and can relieve the nervous psychology of the transfusion patients during transfusion at the same time, and enables the patients to have a rest at ease.
The application purpose of the infusion alarm is to clearly reflect the time when infusion is finished to accompanying personnel and enable the accompanying personnel to make appropriate reflection action, and the electronic infusion alarm accurately shows the alarm time from the above actual effect, thereby achieving the basic use requirement of the infusion alarm, converting a pressure signal into a weak electric signal to obtain the pressure change of a transfusion bottle, and fundamentally avoiding various defects of other induction modes; the pressure sensor is adopted for manufacturing, the principle is simple, the influence of external physical interference factors such as sound, light, electricity, magnetism and the like is low, and the error is small; the liquid quality is adjustable when the alarm is given by utilizing the resistance partial pressure, so that the corresponding threshold values can be set aiming at different medicine bottle specifications, and the method has the advantage of more humanization.
The above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present invention are included in the scope of the present invention.
Claims (6)
1. An electronic transfusion alarm is characterized in that: the alarm comprises a device shell, wherein a working circuit board is arranged in the device shell, the working circuit board is connected with an alarm indicator lamp, the alarm indicator lamp is installed on the outer surface of the device shell, a buzzer and a range knob are arranged on the surface of the device shell, the lower end of the device shell is connected with a transfusion bottle hook, a hanging hole is formed in the outer surface above the device shell, a pressure sensing device is arranged on the inner surface of the device shell, the hardware system structure of the alarm is composed of a direct-current power supply module, a sensing module, a control module and an alarm module, and the control module comprises a signal amplification module, a range adjustment module and a quality control; the alarm module comprises a buzzer and a light emitting diode.
2. An electronic infusion alarm according to claim 1 wherein: the direct current power supply module directly supplies power to the sensing module, the control module and the alarm module.
3. An electronic infusion alarm according to claim 1 wherein: the sensing module is used for generating tension through a hook for hanging the infusion bottle, and the pressure sensor records data and transmits the data to the working circuit board.
4. An electronic infusion alarm according to claim 1 wherein: the pressure sensor is a miniature resistance bridge type weighing sensor, a sensing module is fixed at the top of a device shell, the influence of the mass of the device on the quality of the sensor is eliminated, the sensor only senses the quality change of a transfusion bottle, the sensing module mainly comprises the pressure sensor and plastic plates matched with the pressure sensor, the plastic plates are respectively fixed at two ends of the pressure sensor, and the two ends of the sensor are fixed between an upper plastic plate and a lower plastic plate in a cantilever beam type mode through screws.
5. An electronic infusion alarm according to claim 1 wherein: the control part of the alarm is electrically composed of 3 parts of an operational amplifier, an adjustable knob resistance circuit and an NE555 timer, the amplification factor of the voltage is controlled by using a deep negative feedback circuit built by an integrated operational amplifier and related resistors, and a weak voltage signal output by a sensor is amplified; the feedback circuit part of the operational amplifier is connected with a single-pole multi-throw rotary switch, each rotary contact is connected with a resistor with different resistance values, the voltage amplification factor of the operational amplifier is adjusted by adjusting the resistance value of the resistor, so that the voltage signal output by the operational amplifier is a voltage signal amplified by a specific factor, and knobs which are connected with the rotary switch and rotate to different positions and correspond to different alarm ranges are arranged outside the shell.
6. An electronic infusion alarm according to claim 1 wherein: the direct current power supply module comprises 2 battery boxes, a power supply voltage stabilizing device and a power supply indicator light, and when the electric quantity is sufficient, the indicator light is always on; when the electric quantity is insufficient, the indicating lamp is turned off, and related personnel can be reminded to replace the battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911140642.0A CN110812603A (en) | 2019-11-20 | 2019-11-20 | Electronic transfusion alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911140642.0A CN110812603A (en) | 2019-11-20 | 2019-11-20 | Electronic transfusion alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110812603A true CN110812603A (en) | 2020-02-21 |
Family
ID=69557201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911140642.0A Pending CN110812603A (en) | 2019-11-20 | 2019-11-20 | Electronic transfusion alarm |
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| Country | Link |
|---|---|
| CN (1) | CN110812603A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3390238A (en) * | 1966-05-13 | 1968-06-25 | Clyde W. O'neill | Intravenous fluid level signalling apparatus |
| US4198626A (en) * | 1977-09-02 | 1980-04-15 | Rauscher Frank J | Intravenous alarm device |
| WO2009131266A1 (en) * | 2008-04-21 | 2009-10-29 | Se Yong Jeong | Device for alarming a situation of the intravenous fluid injection and controlling method for the same |
| CN202146489U (en) * | 2011-06-29 | 2012-02-22 | 张中原 | Pressure-sensitive infusion alarm device |
| CN104274883A (en) * | 2014-10-27 | 2015-01-14 | 电子科技大学 | Automatic electronic infusion alarm |
| CN107693899A (en) * | 2017-11-17 | 2018-02-16 | 玉建富 | A kind of electronic infusion autoalarm |
-
2019
- 2019-11-20 CN CN201911140642.0A patent/CN110812603A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3390238A (en) * | 1966-05-13 | 1968-06-25 | Clyde W. O'neill | Intravenous fluid level signalling apparatus |
| US4198626A (en) * | 1977-09-02 | 1980-04-15 | Rauscher Frank J | Intravenous alarm device |
| WO2009131266A1 (en) * | 2008-04-21 | 2009-10-29 | Se Yong Jeong | Device for alarming a situation of the intravenous fluid injection and controlling method for the same |
| CN202146489U (en) * | 2011-06-29 | 2012-02-22 | 张中原 | Pressure-sensitive infusion alarm device |
| CN104274883A (en) * | 2014-10-27 | 2015-01-14 | 电子科技大学 | Automatic electronic infusion alarm |
| CN107693899A (en) * | 2017-11-17 | 2018-02-16 | 玉建富 | A kind of electronic infusion autoalarm |
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Application publication date: 20200221 |
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