CN105477741A - Transfusion reminding device and method - Google Patents
Transfusion reminding device and method Download PDFInfo
- Publication number
- CN105477741A CN105477741A CN201610050340.4A CN201610050340A CN105477741A CN 105477741 A CN105477741 A CN 105477741A CN 201610050340 A CN201610050340 A CN 201610050340A CN 105477741 A CN105477741 A CN 105477741A
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- CN
- China
- Prior art keywords
- circuit
- transfusion
- resonance coil
- signal conditioning
- tube
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- 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.)
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Classifications
-
- 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
- A61M5/1684—Monitoring, detecting, signalling or eliminating infusion flow anomalies by detecting the amount of infusate remaining, e.g. signalling end of infusion
-
- 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
- A61M2205/3327—Measuring
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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 provides a transfusion reminding device and method. The transfusion reminding device comprises a resonance coil formed by winding of a lead, and a transfusion tube is wound in spaces of the lead of the resonance coil. The transfusion reminding device further comprises an excitation circuit, a signal conditioning circuit, a master control circuit and a warning circuit, wherein the resonance coil is connected in series with a resistor and also connected with the excitation circuit; signals at two ends of the resistor are accessed into the signal conditioning circuit; the output of the signal conditioning circuit is accessed into the master control circuit; the master control circuit is connected with the warning circuit. When transfusion is finished, the inherent frequency of the resonance coil rises, excitation is exerted onto the resonance coil to enable the inherent frequency point of the resonance coil to oscillate; then the signal conditioning circuit generates a variable-frequency square wave signal which is sent to the master control circuit; the master control circuit measures the frequency of the signal to judge whether liquid still exists in the transfusion tube or not and whether an alarm is given or not. The transfusion reminding device can automatically alarm when transfusion is coming to an end to remind medical staff of dressing change or needle withdrawal; changes of the inherent frequency of the coil are utilized to determine whether liquid remains, and interferences caused by other factors are eliminated, so that the judgment is more accurate.
Description
Technical field
The present invention relates to medical instruments field, be specifically related to a kind of infusion warning device and method.
Background technology
Hospital will carry out a large amount of infusion treatments in clinical, when infusion bottle inner liquid medicine residue is few, needs artificial prompting nurse immediately to process.Once patient falls asleep and nobody's nurse on the scene again, nurse is also not free to make a round of visits, and can not process in time, can occur " blood back ".Patient or nurse personnel all very arduous.
Existing infusion warning device patent, if publication number is the patent of CN204484944U, CN202128752U, CN104800930A, CN101961515A, CN02283380U, adopt Photoelectric Detection mode, insensitive to liquid that is opaque and easily wall built-up, the change of ambient light easily causes to be failed to report or reports by mistake; Publication number is the patent of CN204050488U, CN204352301U, CN2631519Y, CN104623761A, CN204017005U, whether completely the weight weighing infusion bottle is adopted to detect transfusion, the detection method of weighing, principle is simply convenient to realize and cost is not high, but the specification that its shortcoming is medicine bottle varies in weight, need during use manually to input alarm threshold value, use comparatively inconvenience; Publication number is the patent of CN102553021A, and adopt Hall detection method, its shortcoming is to need detecting element to be placed in medicinal liquid, easily pollutes medicinal liquid.
Summary of the invention
The invention provides a kind of infusion warning device and method.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of infusion warning device, comprise the resonance coil 1 with wire coiling, tube for transfusion 2 is wound around in the spacing of resonance coil 1 wire, also comprise exciting circuit, signal conditioning circuit, governor circuit and warning circuit, resonance coil 1 series resistor connects exciting circuit, by resistance two end signal access signal conditioning circuit, signal conditioning circuit is exported access governor circuit, governor circuit connects warning circuit.
Preferably, also comprise housing 3, housing 3 is hollow circular tube, housing 3 outer surface arranges the linear guide groove 4 of uniform spiral distribution, be parallel direction coiling resonance coil 1 with guide groove in guide groove 4 spacing, tube for transfusion 2 is around in guide groove 4, and housing 3 inside arranges circuit board 5, circuit board 5 is arranged exciting circuit, signal conditioning circuit, governor circuit and warning circuit.
Preferably, exciting circuit comprises audion and agitator.
Preferably, signal conditioning circuit comprises operational amplifier and buffer.
Preferably, governor circuit comprises STM32 single-chip microcomputer and its minimum system.
Preferably, warning circuit comprises buzzer and buzzer driving.
Preferably, warning circuit comprises light emitting diode.
Preferably, also comprise power circuit, power circuit comprises rechargeable battery voltage stabilizing chip and filter capacitor.
Preferably, the material of housing is plastics.
Preferably, housing 3 wall thickness is 8mm, and resonance coil 1 is wide is 4.5mm with height, and with guide groove 4 apart from 0.75mm, groove depth and the groove width of guide groove 4 are 4.5mm, and separation is 6mm.
A method for infusion warning device, comprises the following steps:
Step one: tube for transfusion is wound around in the spacing of resonance coil wire tube for transfusion and is wound around;
Step 2: nurse has an acupuncture treatment to patient, has an acupuncture treatment complete, opens this installation's power source, start this device;
Step 3: be full of liquid gradually in tube for transfusion, resonance coil inductance and parasitic capacitance increase, and resonance coil natural frequency reduces, and governor circuit periodically judges the height of natural frequency, detects that natural frequency is low, are judged as that transfusion does not complete;
Step 4: infusion-completed, no liquid in tube for transfusion, resonance coil inductance and parasitic capacitance are reduced, and cause resonance coil natural frequency to raise, governor circuit determines natural frequency and raises, and is judged as that transfusion completes, sends warning;
Step 5: nurse changes liquid again, device automatic stop alarm, returns step 3; If complete transfusion, then shutoff device power supply.
The present invention is by measuring the change of resonance coil natural frequency, the presence or absence of perception liquid: the liquid in tube for transfusion is electrolyte, electrolytical with or without, resonance coil inductance and parasitic capacitance thereof can be caused to change, thus cause the natural frequency of resonance coil to change.In infusion process, have electrolytic liquid to flow through, resonance coil natural frequency is lower always; When infusion-completed, in tube for transfusion, no liquid flows through, and resonance coil natural frequency raises.Make it vibrate at natural frequency point by applying excitation to resonance coil, then by signal conditioning circuit, produce variable ratio frequency changer square-wave signal, this signal is sent to governor circuit, by governor circuit measuring-signal frequency, and by the size of determination frequency, in judgement tube for transfusion, whether there is liquid.
The invention has the beneficial effects as follows: can medical personnel be reminded to change dressings or pull out pin by automatic alarm when transfusion closes to an end; Utilize inductance coil to accomplish transfusion reminding, save material, convenient making; The present invention utilizes inductance variable quantity to determine whether remaining liq, easily judges, eliminates the interference of other factors, makes it judge more accurate; This device, without the need to family members or patient nursing, facilitates patient and family members to have a rest.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the invention will be further described:
Fig. 1 is schematic diagram of the present invention;
Fig. 2 is control flow chart of the present invention;
Fig. 3 is the functional block diagram of concrete implementing circuit;
Fig. 4 is implementing circuit schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, a kind of infusion warning device, comprise the resonance coil (1) with wire coiling, tube for transfusion (2) is wound around in the spacing of resonance coil (1) wire, also comprise exciting circuit, signal conditioning circuit, governor circuit and warning circuit, resonance coil (1) series resistor connects exciting circuit, by resistance two end signal access signal conditioning circuit, signal conditioning circuit is exported access governor circuit, governor circuit connects warning circuit, also comprise housing (3), housing (3) is hollow circular tube, housing (3) outer surface arranges the linear guide groove (4) of uniform spiral distribution, in guide groove (4) spacing with guide groove be parallel direction coiling resonance coil (1), tube for transfusion (2) is around in guide groove (4), housing (3) inside arranges circuit board (5), (5) arrange exciting circuit with circuit board, signal conditioning circuit, governor circuit and warning circuit, exciting circuit comprises audion and agitator, signal conditioning circuit comprises operational amplifier and buffer, governor circuit comprises STM32 single-chip microcomputer and its minimum system, warning circuit comprises buzzer and buzzer drives, warning circuit comprises light emitting diode, also comprise power circuit, power circuit comprises rechargeable battery voltage stabilizing chip and filter capacitor, the material of housing is plastics, housing wall thickness is 8mm, resonance coil (1) is wide is 4.5mm with height, with guide groove distance 0.75mm, groove depth and the groove width of guide groove 3 are 4.5mm, separation is 6mm.
Further, at tube for transfusion outer wall coiling 1000 circle enamel-covered wire as resonance coil, after being connected in series 270 ohmages, exciting circuit is accessed.Use positive-negative-positive 8550 audion and 555 agitators to build exciting circuit, regulate 555 agitators to produce the drived control pulse of about 10us.Operational amplifier and buffer is used to build signal conditioning circuit, by resistance two end signal access modulate circuit.Use STM32f446RE single-chip microcomputer and minimum system thereof to build governor circuit, modulate circuit is exported access governor circuit.Use buzzer and buzzer to drive and build warning circuit, and the input of warning circuit is connected on the output I/O port of governor circuit.Functional block diagram and the schematic diagram of circuit are shown in Fig. 3, Fig. 4.
Control flow chart as shown in Figure 2, implementing circuit is built complete, powers up operation.When there being liquid in tube for transfusion, inductance and the parasitic capacitance of resonance coil are larger, the natural frequency of resonance coil is lower, master control analysis is transferred to after signal conditioning circuit process, master control collects the output signal of signal conditioning circuit, can measure the cycle of this signal, thus calculate natural frequency, governor circuit judgement has liquid, continues to detect.When infusion-completed, resonance coil exports fixed frequency and raises, master control analysis is transferred to after signal conditioning circuit process, master control collects the output signal of signal conditioning circuit, can measure the cycle of this signal, thus calculate natural frequency, the natural frequency that now governor circuit measures raises, judgement does not have liquid, controls warning circuit and reports to the police.
A method for infusion warning device, comprises the following steps:
Step one: tube for transfusion is wound around in the spacing of resonance coil wire tube for transfusion and is wound around;
Step 2: nurse has an acupuncture treatment to patient, has an acupuncture treatment complete, opens this installation's power source, start this device;
Step 3: be full of liquid gradually in tube for transfusion, resonance coil inductance and parasitic capacitance increase, and resonance coil natural frequency reduces, and governor circuit periodically judges the height of natural frequency, detects that natural frequency is low, are judged as that transfusion does not complete;
Step 4: infusion-completed, no liquid in tube for transfusion, resonance coil inductance and parasitic capacitance are reduced, and cause resonance coil natural frequency to raise, governor circuit determines natural frequency and raises, and is judged as that transfusion completes, sends warning;
Step 5: nurse changes liquid again, device automatic stop alarm, returns step 3; If complete transfusion, then shutoff device power supply.
Claims (10)
1. an infusion warning device, it is characterized in that, comprise the resonance coil (1) with wire coiling, tube for transfusion (2) is wound around in the spacing of resonance coil (1) wire, also comprise exciting circuit, signal conditioning circuit, governor circuit and warning circuit, resonance coil (1) series resistor connects exciting circuit, by resistance two end signal access signal conditioning circuit, signal conditioning circuit is exported access governor circuit, governor circuit connects warning circuit.
2. a kind of infusion warning device according to claim 1, it is characterized in that, also comprise housing (3), housing (3) is hollow circular tube, housing (3) outer surface arranges the linear guide groove (4) of uniform spiral distribution, in guide groove (4) spacing with guide groove be parallel direction coiling resonance coil (1), tube for transfusion (2) is around in guide groove (4), housing (3) inside arranges circuit board (5), and (5) arrange exciting circuit, signal conditioning circuit, governor circuit and warning circuit with circuit board.
3. a kind of infusion warning device according to claim 1, is characterized in that, exciting circuit comprises audion and agitator.
4. a kind of infusion warning device according to claim 1, is characterized in that, signal conditioning circuit comprises operational amplifier and buffer.
5. a kind of infusion warning device according to claim 1, is characterized in that, governor circuit comprises STM32 single-chip microcomputer and its minimum system.
6. a kind of infusion warning device according to claim 1, is characterized in that, warning circuit comprises buzzer and buzzer drives.
7. a kind of infusion warning device according to claim 1, it is characterized in that, warning circuit comprises light emitting diode.
8. a kind of infusion warning device according to claim 1, is characterized in that, also comprise power circuit, and power circuit comprises rechargeable battery voltage stabilizing chip and filter capacitor.
9. a kind of infusion warning device according to claim 1, is characterized in that, the material of housing is plastics.
10. the method for a kind of infusion warning device according to claim 1, is characterized in that, comprise the following steps:
Step one: tube for transfusion is wound around in the spacing of resonance coil wire tube for transfusion and is wound around;
Step 2: nurse has an acupuncture treatment to patient, has an acupuncture treatment complete, opens this installation's power source, start this device;
Step 3: be full of liquid gradually in tube for transfusion, resonance coil inductance and parasitic capacitance increase, and resonance coil natural frequency reduces, and governor circuit periodically judges the height of natural frequency, detects that natural frequency is low, are judged as that transfusion does not complete;
Step 4: infusion-completed, no liquid in tube for transfusion, resonance coil inductance and parasitic capacitance are reduced, and cause resonance coil natural frequency to raise, governor circuit determines natural frequency and raises, and is judged as that transfusion completes, sends warning;
Step 5: nurse changes liquid again, device automatic stop alarm, returns step 3; If complete transfusion, then shutoff device power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610050340.4A CN105477741A (en) | 2016-01-26 | 2016-01-26 | Transfusion reminding device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610050340.4A CN105477741A (en) | 2016-01-26 | 2016-01-26 | Transfusion reminding device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105477741A true CN105477741A (en) | 2016-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610050340.4A Pending CN105477741A (en) | 2016-01-26 | 2016-01-26 | Transfusion reminding device and method |
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| Country | Link |
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| CN (1) | CN105477741A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107982621A (en) * | 2017-12-21 | 2018-05-04 | 中国人民解放军总医院 | Sputum aspirator tube |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2036841U (en) * | 1988-03-31 | 1989-05-03 | 樊延虎 | Medical monitor for infusion |
| CN201791191U (en) * | 2010-09-06 | 2011-04-13 | 江苏省常熟职业教育中心校 | Automatic transfusion caller |
| CN102861368A (en) * | 2012-10-15 | 2013-01-09 | 中国人民解放军第四军医大学 | Venous transfusion device capable of alarming and preventing blood return |
| CN202892523U (en) * | 2012-08-09 | 2013-04-24 | 张同合 | Intravenous drip finish warning device |
| CN103212135A (en) * | 2013-04-28 | 2013-07-24 | 南京邮电大学 | Relieved transfusion system based on photoelectric sensing technology |
| CN103585690A (en) * | 2013-10-15 | 2014-02-19 | 医惠科技(苏州)有限公司 | Transfusion safety control system and device combination |
| CN105142697A (en) * | 2013-03-15 | 2015-12-09 | 德卡产品有限公司 | System, method, and apparatus for monitoring, regulating, or controlling fluid flow |
| CN205515804U (en) * | 2016-01-26 | 2016-08-31 | 南京信息工程大学 | Transfusion reminding apparatus |
-
2016
- 2016-01-26 CN CN201610050340.4A patent/CN105477741A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2036841U (en) * | 1988-03-31 | 1989-05-03 | 樊延虎 | Medical monitor for infusion |
| CN201791191U (en) * | 2010-09-06 | 2011-04-13 | 江苏省常熟职业教育中心校 | Automatic transfusion caller |
| CN202892523U (en) * | 2012-08-09 | 2013-04-24 | 张同合 | Intravenous drip finish warning device |
| CN102861368A (en) * | 2012-10-15 | 2013-01-09 | 中国人民解放军第四军医大学 | Venous transfusion device capable of alarming and preventing blood return |
| CN105142697A (en) * | 2013-03-15 | 2015-12-09 | 德卡产品有限公司 | System, method, and apparatus for monitoring, regulating, or controlling fluid flow |
| CN103212135A (en) * | 2013-04-28 | 2013-07-24 | 南京邮电大学 | Relieved transfusion system based on photoelectric sensing technology |
| CN103585690A (en) * | 2013-10-15 | 2014-02-19 | 医惠科技(苏州)有限公司 | Transfusion safety control system and device combination |
| CN205515804U (en) * | 2016-01-26 | 2016-08-31 | 南京信息工程大学 | Transfusion reminding apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107982621A (en) * | 2017-12-21 | 2018-05-04 | 中国人民解放军总医院 | Sputum aspirator tube |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160413 |