CN110152117A - A kind of venous transfusion detection device and its detection method - Google Patents
A kind of venous transfusion detection device and its detection method Download PDFInfo
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- CN110152117A CN110152117A CN201910344550.8A CN201910344550A CN110152117A CN 110152117 A CN110152117 A CN 110152117A CN 201910344550 A CN201910344550 A CN 201910344550A CN 110152117 A CN110152117 A CN 110152117A
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- 238000001514 detection method Methods 0.000 title claims abstract description 50
- 238000001802 infusion Methods 0.000 claims abstract description 42
- 238000003780 insertion Methods 0.000 claims abstract description 31
- 230000037431 insertion Effects 0.000 claims abstract description 31
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 230000005669 field effect Effects 0.000 claims description 46
- 239000003990 capacitor Substances 0.000 claims description 40
- 230000003321 amplification Effects 0.000 claims description 23
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 23
- 239000012530 fluid Substances 0.000 claims description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 230000005611 electricity Effects 0.000 claims description 10
- 238000010248 power generation Methods 0.000 claims description 9
- 239000003381 stabilizer Substances 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 238000001467 acupuncture Methods 0.000 claims description 4
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims 1
- 238000001990 intravenous administration Methods 0.000 abstract description 4
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 101000908580 Homo sapiens Spliceosome RNA helicase DDX39B Proteins 0.000 description 4
- 102100021298 b(0,+)-type amino acid transporter 1 Human genes 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000008280 blood Substances 0.000 description 3
- 210000004369 blood Anatomy 0.000 description 3
- 240000002853 Nelumbo nucifera Species 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 2
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 230000010412 perfusion Effects 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000857 drug effect Effects 0.000 description 1
- 239000003978 infusion fluid Substances 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
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
- A61M5/16804—Flow controllers
-
- 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
- A61M5/16886—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 for measuring fluid flow rate, i.e. flowmeters
-
- 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
- A61M5/16886—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 for measuring fluid flow rate, i.e. flowmeters
- A61M5/1689—Drip counters
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/18—General characteristics of the apparatus with alarm
Landscapes
- 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)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a kind of venous transfusion detection device and its detection methods.Necessary someone's detection, infusion instrument cannot judge automatically whether infusion terminates during intravenous drip.A kind of venous transfusion detection device of the present invention, including disposable transfusion device, vibration detection component, battery and signal conversion circuit.The side of drop pot is provided with piezoelectric patches insertion groove.Vibration detection component includes piezoelectric patches, the first arc panel and the second arc panel.One end of piezoelectric patches and the medial surface of the first arc panel are fixed.The one side edge of first arc panel and the second arc panel is hinged.Signal conversion circuit includes amplifier chip and XOR gate.Amplifier chip includes the first operational amplifier and second operational amplifier.The present invention detects the vibration signal generated when drop drips in dripping pot by piezoelectric patches, and judges whether infusion is completed with this, and then realize the auto-real-time monitoring in venous transfusion, and to patient's the most comfortable and safe infusion is experienced.
Description
Technical field
The invention belongs to technical field of medical auxiliary equipment, and in particular to a kind of venous transfusion detection device and its detection side
Method.
Background technique
Intravenous fluid therapy is treatment means particularly important in medical treatment and nursing, since its drug effect is fast, irritation is small, administration
Rapidly, to be widely applied in major medical institutions now.By observing and analyzing current venous transfusion process, sum up
With both sides problem on existing venous transfusion instrument: first, necessary someone's detection, infusion instrument during intravenous drip
Device cannot judge automatically whether infusion terminates and notify medical staff to handle in time, and sufferer is caused the dangerous shape such as blood back occur
Condition.Second, flow regulator is unable to adjust automatically flow velocity, after medical fluid drips off, can not in time turn down flow velocity, lead to blood back.
Summary of the invention
The purpose of the present invention is to provide a kind of venous transfusion detection device and its detection methods.
A kind of venous transfusion detection device of the present invention, including disposable transfusion device, vibration detection component, battery and signal turn
Change circuit.The disposable transfusion device includes drop pot.The side of the drop pot is provided with piezoelectric patches insertion groove.Piezoelectric patches insertion
Slot is connected to external environment, and is not connected to the inner cavity of drop pot.The vibration detection component includes piezoelectric patches, the first arc panel
With the second arc panel.One end of piezoelectric patches and the medial surface of the first arc panel are fixed.The one of first arc panel and the second arc panel
Side edge is hinged.
The signal conversion circuit includes charge amplification chip, voltage comparable chip and XOR gate.Charge amplification chip
Non-inverting input terminal be connected with the first terminals of piezoelectric patches, and be grounded；The second terminals, the electricity of anti-phase input termination piezoelectric patches
Hold one end of C2 and one end of resistance R7.The other end of capacitor C2 and the other end of resistance R7 connect the output of charge amplification chip
End.The positive supply voltage of charge amplification chip terminates positive supply；Negative supply voltage terminates negative supply.
The voltage comparable chip includes the first operational amplifier and second operational amplifier.Voltage comparable chip is just
Supply voltage terminates positive supply, and negative supply voltage terminates negative supply；The first operational amplifier is same mutually defeated in voltage comparable chip
Enter end ground connection, anti-phase input terminate charge amplifier U1 output end, export terminating diode D2 anode and resistance R8 one
End；The cathode of diode D2 connects the first input end of XOR gate；Another termination positive supply of resistance R8；In voltage comparable chip
The output end of the homophase input termination charge amplification chip of two operational amplifiers, reverse inter-input-ing ending grounding export terminating diode
The anode of D3 and one end of resistance R9；The cathode of diode D3 connects the second input terminal of XOR gate；Another termination of resistance R9 is just
Power supply.
Further, a kind of venous transfusion detection device of the present invention further includes warning circuit.The warning circuit includes
Resistance R1, resistance R2, resistance R3, resistance R6, capacitor C1, voltage-stabiliser tube D1, buzzer, the first field-effect tube M1 and the second field-effect
Pipe M2.The output end of a termination XOR gate of resistance R1, the grid of the first field-effect tube M1 of another termination.First field-effect tube M1
Drain electrode connecting resistance R6 one end, another terminating resistor R2, one end of capacitor C1 and the cathode of voltage-stabiliser tube D1 of resistance R6.First
The other end of field-effect tube M1, the source electrode of the second field-effect tube M2 and capacitor C1 are grounded.Another termination button switch of resistance R2
And one end of resistance R3.The positive terminals of another termination buzzer of resistance R3.The negative wiring of buzzer terminates the second field-effect
The drain electrode of pipe M2.Resistance R2 and capacitor C1 forms RC charging circuit；The charging constant of the RC charging circuit is greater than or equal to 4s；Surely
The burning voltage of pressure pipe D1 is 0.5~0.8 times of cell output voltage.
Further, a kind of venous transfusion detection device of the present invention further includes controller and flow adjustment mechanism.Described
Flow adjustment mechanism includes adjustment base, adjusting slider and adjusting driving assembly.Infusion tube passage is offered in adjustment base.One
Infusion tube on secondary property infusion apparatus passes through the infusion tube passage on adjustment base.Adjusting slider and adjustment base, which are constituted, to be slided
It is secondary.It is provided with flow on adjusting slider and adjusts pressure head.Flow adjusts pressure head and protrudes into infusion tube passage, and resists infusion tube.
The bottom surface of infusion tube passage and the axis of adjusting screw are not parallel；The control output for adjusting the control interface and controller of motor connects
Mouth passes through motor driver and connects.The signal input part of controller and the output end of XOR gate connect.
Further, the controller and host computer are carried out wireless communication by wireless module.
Further, the adjusting driving assembly includes adjusting screw and adjusting motor.The adjusting screw bearing
On adjustment base.Adjusting slider and adjusting screw constitute screw pair；Adjust motor be fixed on adjustment base, and output shaft with
One end of adjusting screw is fixed.
Further, a kind of venous transfusion detection device of the present invention further includes vibrating power-generation circuit.The vibrating power-generation
Circuit includes rectifier bridge and voltage comparator.The first input end of the rectifier bridge, the second input terminal and piezoelectric patches first connect
Line end, the second terminals are respectively connected with.The cathode output end of rectifier bridge meets capacitor CE1, one end of resistance RE1, voltage comparator
Positive supply voltage end, one end of resistance RE3, one end of resistance RE4 and the 4th field-effect tube M4 source electrode, cathode output end is equal
Connect the source of the other end of capacitor CE1, one end of resistance RE2, the negative supply voltage end of voltage comparator, third field-effect tube M3
The cathode of pole, one end of capacitor CE2 and battery.The anti-phase input terminating resistor RE1's and resistance RE2 of voltage comparator is another
End, homophase input terminate the anode of battery, the grid of output termination third field-effect tube M3 and the other end of resistance RE3.Third
The drain electrode of field-effect tube M3 connects the grid of the 4th field-effect tube M4 and the other end of resistance RE4.The grid of 4th field-effect tube M4
Connect the other end of the second capacitor CE2 and the anode of battery.
Further, the model 74LS86 of the XOR gate.The model LM393 of the voltage comparator.Charge is put
The model OP37 of large chip；The model LM393 of the voltage comparator U4；The model MB6S of the rectifier bridge.
Further, first arc panel, the second arc panel another side edge be embedded with permanent magnet, iron block respectively；The
One arc panel, the second arc panel ring live to drip pot.Piezoelectric patches protrudes into piezoelectric patches insertion groove, and the top surface of piezoelectric patches and piezoelectric patches are inserted
Enter the upside face contact of slot.The width of the piezoelectric patches is less than the width of piezoelectric patches insertion groove；The length of piezoelectric patches is less than piezoelectricity
The depth of piece insertion groove, and it is greater than the radius of drop pot.
Further, the positive supply is obtained after voltage stabilizing chip by the positive voltage of the anode output of battery；It is described
Negative supply by positive supply through polarity invert power adapter obtain.The model of polarity reversion power adapter
ICL7660S。
The detection method of the venous transfusion detection device is as follows:
Step 1: medical staff is that after patient has an acupuncture treatment, the piezoelectric patches in vibration detection component is inserted with disposable transfusion device
Enter the piezoelectric patches insertion groove dripped on pot, and by the first arc panel and the second arc plate closing.
Step 2: starting medical fluid drop of persistently dripping in drop pot, piezoelectric patches is vibrated when medical fluid drips, and XOR gate is just
Export a high level.Controller persistently receives the signal of XOR gate output, and records the low level duration；Work as controller
Detecting that XOR gate persistently exports the low level time is more than 5s, then enters step three.
Step 3: controller controls to adjust motor rotation, so that infusion tube is compacted.
The invention has the advantages that:
1, the present invention detects the vibration signal generated when drop drips in dripping pot by piezoelectric patches, and judges to be infused with this
Whether complete, and then realize the auto-real-time monitoring in venous transfusion, to patient's the most comfortable and safe infusion is experienced.
2, the present invention can collect the energy in medical fluid drip process to charge for battery, greatly strengthen of the invention hold
Continuous ability.Technical solution especially in embodiment one passes through amplifier, logic gate, capacitor, field due to not using controller
Processing identification and automatic alarm to vibration signal can be realized in the low power consumption electronics element such as effect pipe, and power consumption is extremely low, matches combined pressure
Electric piece vibrating power-generation, can level off to unlimited continuation of the journey.
3, the flow adjustment mechanism in the present invention enables to nurse station to realize long-range transfusion speed control, and consumes in medical fluid
It is automatically stopped infusion after to the greatest extent, in nurse not in time with avoiding the generation of blood back situation in the case where dressing liquid.
4, disposable transfusion device and other components are separable in the present invention；Therefore, it can individually abandon disposable defeated
Liquid device, other components can be reused.
Detailed description of the invention
Fig. 1 is the system block diagram of the embodiment of the present invention 1；
Fig. 2 is the schematic diagram that pot is dripped in the embodiment of the present invention 1 and 2；
Fig. 3 is the schematic diagram of vibration detection component in the embodiment of the present invention 1 and 2；
Fig. 4 is the circuit diagram of vibrating power-generation circuit in the embodiment of the present invention 1 and 2；
Fig. 5 is the circuit diagram of signal conversion circuit in the embodiment of the present invention 1 and 2；
Fig. 6 is the circuit diagram of warning circuit in the embodiment of the present invention 1；
Fig. 7 is the system block diagram of the embodiment of the present invention 2；
Fig. 8 is the schematic diagram of flow adjustment mechanism in the embodiment of the present invention 2；
Specific embodiment
Below in conjunction with attached drawing, the invention will be further described.
Embodiment 1
As shown in Figure 1,2 and 3, a kind of venous transfusion detection device, including disposable transfusion device, vibration detection component, vibration
Dynamic electricity-generating circuit 6, battery BT1, signal conversion circuit 4 and warning circuit 5.Disposable transfusion device includes intravenous needle, injection needle, needle
Head helmet, infusion tube, liquid medicine filter, flow regulator, drop pot, bottle plug puncture unit and air filter.Drip the side of pot
It is provided with piezoelectric patches insertion groove 201.Piezoelectric patches insertion groove 201 is connected to external environment, and is not connected to the inner cavity of drop pot.
As shown in figure 3, vibration detection component includes piezoelectric patches 101, the first arc panel 102 and the second arc panel 103.Piezoelectricity
One end of piece 101 and the medial surface of the first arc panel 102 are fixed.The width of piezoelectric patches 101 is less than the width of piezoelectric patches insertion groove 201
Degree；The length of piezoelectric patches 101 is less than the depth of piezoelectric patches insertion groove 201, and is greater than the radius of drop pot.First arc panel 102 with
The one side edge of second arc panel 103 is hinged.First arc panel 102, the second arc panel 103 another side edge be embedded with respectively forever
Magnet, iron block；First arc panel 102,103 ring of the second arc panel live to drip pot.Piezoelectric patches 101 protrudes into piezoelectric patches insertion groove 201,
And the upside face contact of the top surface of piezoelectric patches 101 and piezoelectric patches insertion groove 201.After permanent magnet and iron block are attracted, the first arc panel
102 is corresponding with drop pot with the medial surface shape of the second arc panel 103.After inlet 202 at the top of drop pot oozes medical fluid drop, medicine
On piezoelectric patches insertion groove 201, piezoelectric patches 101 vibrates drips during this, and issues pulse signal.
As shown in figure 4, vibrating power-generation circuit 6 includes rectifier bridge DE1 and voltage comparator U4.The model of rectifier bridge DE1
MB6S.The model LM393 of voltage comparator U4.First input end (1 pin), the second input terminal (3 pin) of rectifier bridge DE1
It is respectively connected with the first terminals, the second terminals of piezoelectric patches 101.The cathode output end (2 pin) of rectifier bridge DE1 connects capacitor
CE1, one end of resistance RE1, the positive supply voltage end of voltage comparator U4, one end of resistance RE3, one end of resistance RE4 and
The source electrode of four field-effect tube M4, cathode output end (4 pin) connect the other end of capacitor CE1, one end of resistance RE2, voltage ratio
Cathode compared with the negative supply voltage end of device U4, the source electrode of third field-effect tube M3, one end of capacitor CE2 and battery BAT1 is (i.e.
Line).The other end of the anti-phase input terminating resistor RE1 and resistance RE2 of voltage comparator U4, homophase input terminate battery BAT1's
Positive VCC, the grid of output termination third field-effect tube M3 and the other end of resistance RE3.The drain electrode of third field-effect tube M3 connects
The grid of 4th field-effect tube M4 and the other end of resistance RE4.The grid of 4th field-effect tube M4 meets the another of the second capacitor CE2
The positive VCC of end and battery BT1.Remaining pin of voltage comparator U4 is hanging.
As shown in figure 5, signal conversion circuit 4 includes charge amplification chip U1, voltage comparable chip U2 and XOR gate U3.Electricity
The model OP37 of lotus amplification chip U1.The signal of voltage comparable chip U2 is LM393.The model 74LS86 of XOR gate U3.
The non-inverting input terminal (3 pin) of charge amplification chip U1 connects the first terminals P1 and ground wire GND of piezoelectric patches 101, anti-phase input
End (2 pin) connects one end of the second terminals P2 of piezoelectric patches 101, capacitor C2 and resistance R7.Capacitor C2's and resistance R7 is another
End connects the output end (6 pin) of charge amplification chip U1.The positive supply voltage end (7 pin) of charge amplification chip U1 connects positive electricity
Source+V, negative supply voltage end (4 pin) meet negative supply-V.Positive supply+V (5V voltage) is exported just by the anode of battery BT1
Voltage obtains after voltage stabilizing chip；Negative supply-V inverts power adapter through polarity by positive supply+V and obtains.Polarity reversion electricity
The model ICL7660S of source converter.
Voltage comparable chip U2 includes the first operational amplifier and second operational amplifier.The positive confession of voltage comparable chip U2
Piezoelectric voltage end (8 pin) meets positive supply+V, and negative supply voltage end (4 pin) meets negative supply-V；First in voltage comparable chip U2
The non-inverting input terminal (3 pin) of operational amplifier is grounded GND, and inverting input terminal (2 pin) connects the output end of charge amplifier U1
(6 pin), output end (1 pin) connect the anode of diode D2 and one end of resistance R8；The cathode of diode D2 meets XOR gate U3
First input end；Another termination positive supply+V of resistance R8；Second operational amplifier is same mutually defeated in voltage comparable chip U2
Enter the output end (6 pin) that end (5 pin) meets charge amplification chip U1, inverting input terminal (6 pin) is grounded GND, output end (7
Pin) connect the anode of diode D3 and one end of resistance R9；The cathode of diode D3 connects the second input terminal of XOR gate U3；Resistance
Another termination positive supply+V of R9.
As shown in fig. 6, warning circuit 5 includes resistance R1, resistance R2, resistance R3, resistance R6, capacitor C1, voltage-stabiliser tube D1, bee
Ring device B1, the first field-effect tube M1 and the second field-effect tube M2.The output end P3 of a termination XOR gate U3 of resistance R1, the other end
Connect the grid of the first field-effect tube M1.One end of the drain electrode connecting resistance R6 of first field-effect tube M1, another termination electricity of resistance R6
Hinder R2, one end of capacitor C1 and the cathode of voltage-stabiliser tube D1.The source electrode and capacitor C1 of first field-effect tube M1, the second field-effect tube M2
The other end be grounded.Another termination button switch S1 of resistance R2 and one end of resistance R3.Another termination buzzing of resistance R3
The positive terminals of device B1.The negative wiring of buzzer B1 terminates the drain electrode of the second field-effect tube M2.Resistance R2 and capacitor C1 forms RC
Filter circuit；(i.e. the product of the capacitance of the resistance value of resistance R2 and capacitor C1 indicates capacitor C1 to the charging constant of the RC filter circuit
End voltage reaches required time when 0.63 times of maximum value) it is 5s.The burning voltage of voltage-stabiliser tube D1 is cell output voltage
0.63 times；If therefore capacitor C1 charging duration is short and time constant；Then voltage-stabiliser tube D1 would not be breakdown.
The venous transfusion detection device working principle is as follows:
After it is user's acupuncture treatment that medical staff is with disposable transfusion device, the piezoelectric patches 101 in vibration detection component is inserted
Enter the piezoelectric patches insertion groove dripped on pot, and the first arc panel 102 and the second arc panel 103 are closed；Button switch S1 is pressed, is made
The anode for obtaining resistance R2 and resistance R3 and battery connects.
After button switch S1 is pressed, since the connection of the first operational amplifier, second operational amplifier is opposite；Therefore
Piezoelectric patches vibrates, and regardless of direction of vibration, the first operational amplifier, the output end of second operational amplifier are one inevitable
It is low level for high level one, after XOR gate, i.e., exportable high level；As long as therefore piezoelectric patches is vibrating, XOR gate
With regard to exporting high level；Only when piezoelectric patches does not vibrate, XOR gate just exports low level.As it can be seen that the medical fluid that drips every time in drop pot
Drop, XOR gate can export a high level.When XOR gate exports high level, the first field-effect tube M1 conducting, so that electric
Hold C1 to start to charge.
Therefore, it as long as there are also medical fluids in infusion bottle, drips intermittent lasting in pot and instills medical fluid drop；XOR gate will continue
Square-wave signal is exported, since the Drain time interval of two drops physic liquors drop in infusion does not exceed 5 seconds；Therefore the exclusive or in infusion process
Door output duration does not exceed five seconds.
After no longer instilling medical fluid in drop pot, two input terminals while input low level of XOR gate；So that XOR gate is defeated
Outlet persistently exports high level, so that the voltage at the both ends capacitor C1 is increased to cell voltage；Voltage-stabiliser tube D1 breakdown, the second field-effect
Pipe M2 conducting；Buzzer makes a sound.
Embodiment 2
As shown in Fig. 2,3 and 7, a kind of venous transfusion detection device, including disposable transfusion device, flow adjustment mechanism, vibration
Dynamic detection components, vibrating power-generation circuit 6, signal conversion circuit 4 and controller 7.Disposable transfusion device includes intravenous needle, injection
Needle, needle-covering cap, infusion tube 305, liquid medicine filter, drop pot, bottle plug puncture unit and air filter.On the lateral surface for dripping pot
It is provided with piezoelectric patches insertion groove 201.Piezoelectric patches insertion groove 201 is connected to external environment, and is not connected to the inner cavity of drop pot.
As shown in figure 3, vibration detection component includes piezoelectric patches 101, the first arc panel 102 and the second arc panel 103.Piezoelectricity
One end of piece 101 and the medial surface of the first arc panel 102 are fixed.The width of piezoelectric patches 101 is less than the width of piezoelectric patches insertion groove 201
Degree；The length of piezoelectric patches 101 is less than the depth of piezoelectric patches insertion groove 201, and is greater than the radius of drop pot.First arc panel 102 with
The one side edge of second arc panel 103 is hinged, another side edge.Another side of first arc panel 102, the second arc panel 103
Edge is embedded with permanent magnet, iron block respectively；First arc panel 102,103 ring of the second arc panel live to drip pot.Piezoelectric patches 101 protrudes into piezoelectric patches
In insertion groove 201, and the upside face contact of the top surface of piezoelectric patches 101 and piezoelectric patches insertion groove 201.Permanent magnet and iron block are attracted
Afterwards, the first arc panel 102 is corresponding with drop pot with the medial surface shape of the second arc panel 103.Inlet 202 at the top of drop pot drips
After drug drop, medical fluid is dropped on piezoelectric patches insertion groove 201, and piezoelectric patches 101 vibrates during this, and issues arteries and veins
Rush signal.
As shown in figure 8, flow adjustment mechanism includes adjustment base 301, adjusting screw 302, adjusting slider 303 and adjusts electricity
Machine 304.Infusion tube passage is offered in adjustment base 301.Infusion tube 305 on disposable transfusion device passes through adjustment base
Infusion tube passage on 301.Infusion tube 305 and infusion tube passage interference fit, to guarantee adjustment base 301 and infusion tube
Without relative motion between 305.Adjusting screw 302 is supported on adjustment base 301.It adjusts motor 304 and is fixed on adjustment base 301
On, and one end of output shaft and adjusting screw 302 is fixed.Adjusting slider 303 and adjustment base 301 constitute sliding pair.It adjusts and slides
Block and adjusting screw constitute screw pair；It is provided with flow on adjusting slider 303 and adjusts pressure head.Flow adjusts pressure head and protrudes into perfusion tube
In channel, and resist infusion tube 305.The bottom surface of infusion tube passage and the axis of adjusting screw 302 are not parallel；Adjusting screw
The axis that the distance of 302 axis to perfusion tube one end of the channel bottom is equal to adjusting screw 302 adjusts pressure head end to flow
Distance；The distance of the axis of adjusting screw 302 to infusion tube passage other end bottom is equal to the axis of adjusting screw 302 to flow
Adjust the distance of pressure head end and the sum of the outer diameter of infusion tube 305.
When adjusting screw 302 rotates, adjusting slider 303 is slided along the axis direction of adjusting screw 302.It is soft due to being infused
Structure has a certain degree between pipe 305 and adjusting screw 302, therefore when adjusting slider 303 is moved along 302 direction of adjusting screw
When, 303 outside end of adjusting slider changes the pressing force of infusion tube 305, so that infusion tube 305 and adjusting slider 303
The cross section of fluid channel product of contact position changes, to adjust flow velocity.
As shown in figure 4, vibrating power-generation circuit 6 includes rectifier bridge DE1 and voltage comparator U4.The model of rectifier bridge DE1
MB6S.The model LM393 of voltage comparator U4.First input end (1 pin), the second input terminal (3 pin) of rectifier bridge DE1
It is respectively connected with the first terminals, the second terminals of piezoelectric patches 101.The cathode output end (2 pin) of rectifier bridge DE1 connects capacitor
CE1, one end of resistance RE1, the positive supply voltage end of voltage comparator U4, one end of resistance RE3, one end of resistance RE4 and
The source electrode of four field-effect tube M4, cathode output end (4 pin) connect the other end of capacitor CE1, one end of resistance RE2, voltage ratio
Cathode compared with the negative supply voltage end of device U4, the source electrode of third field-effect tube M3, one end of capacitor CE2 and battery BAT1 is (i.e.
Line).The other end of the anti-phase input terminating resistor RE1 and resistance RE2 of voltage comparator U4, homophase input terminate battery BAT1's
Positive VCC, the grid of output termination third field-effect tube M3 and the other end of resistance RE3.The drain electrode of third field-effect tube M3 connects
The grid of 4th field-effect tube M4 and the other end of resistance RE4.The grid of 4th field-effect tube M4 meets the another of the second capacitor CE2
The positive VCC of end and battery BT1.Remaining pin of voltage comparator U4 is hanging.
As shown in figure 5, signal conversion circuit 4 includes charge amplification chip U1, voltage comparable chip U2 and XOR gate U3.Electricity
The model OP37 of lotus amplification chip U1.The signal of voltage comparable chip U2 is LM393.The model 74LS86 of XOR gate U3.
The non-inverting input terminal (3 pin) of charge amplification chip U1 connects the first terminals P1 and ground wire GND of piezoelectric patches 101, anti-phase input
End (2 pin) connects one end of the second terminals P2 of piezoelectric patches 101, capacitor C2 and resistance R7.Capacitor C2's and resistance R7 is another
End connects the output end (6 pin) of charge amplification chip U1.The positive supply voltage end (7 pin) of charge amplification chip U1 connects positive electricity
Source+V, negative supply voltage end (4 pin) meet negative supply-V.Positive supply+V is by the positive voltage of the anode output of battery BT1 through steady
It is obtained after pressure chip；Negative supply-V inverts power adapter through polarity by positive supply+V and obtains.Polarity inverts power adapter
Model ICL7660S.
Voltage comparable chip U2 includes the first operational amplifier and second operational amplifier.The positive confession of voltage comparable chip U2
Piezoelectric voltage end (8 pin) meets positive supply+V, and negative supply voltage end (4 pin) meets negative supply-V；First in voltage comparable chip U2
The non-inverting input terminal (3 pin) of operational amplifier is grounded GND, and inverting input terminal (2 pin) connects the output end of charge amplifier U1
(6 pin), output end (1 pin) connect the anode of diode D2 and one end of resistance R8；The cathode of diode D2 meets XOR gate U3
First input end；Another termination positive supply+V of resistance R8；Second operational amplifier is same mutually defeated in voltage comparable chip U2
Enter the output end (6 pin) that end (5 pin) meets charge amplification chip U1, inverting input terminal (6 pin) is grounded GND, output end (7
Pin) connect the anode of diode D3 and one end of resistance R9；The cathode of diode D3 connects the second input terminal of XOR gate U3；Electricity
Hinder another termination positive supply+V of R9.
The control interface for adjusting motor 304 is connect with the control output interface of controller 7 by motor driver.Controller
7 signal input part (I/O mouthfuls) is connect with the output end P3 of XOR gate U3.The host computer 8 of controller 7 and nurse station passes through wireless
Module carries out wireless communication.Host computer 8 can be rotated to control to adjust motor 304, be realized by sending signal to controller 7
Long-range control to drop flow.
The detection method of the venous transfusion detection device is as follows:
Step 1: medical staff is after patient has an acupuncture treatment, by the piezoelectric patches 101 in vibration detection component with disposable transfusion device
Piezoelectric patches insertion groove on insertion drop pot, and the first arc panel 102 and the second arc panel 103 are closed.
Step 2: since the connection of the first operational amplifier, second operational amplifier is opposite；Therefore it shakes in piezoelectric patches
It is dynamic, regardless of direction of vibration, the first operational amplifier, output end inevitable one of second operational amplifier be high level one
For low level, after XOR gate, i.e., exportable high level；As long as therefore piezoelectric patches is vibrating, XOR gate exports high level；
Only when piezoelectric patches does not vibrate, XOR gate just exports low level.As it can be seen that medical fluid drop of dripping every time in drop pot, XOR gate energy
Enough export a high level.
Controller 7 persistently receives the signal of XOR gate output, and records the low level duration；When controller 7 detects
It is more than 5s that the low level time is persistently exported to XOR gate, then enters step three.Due to infusion in two drops physic liquors drop drippage when
Between be spaced and do not exceed 5 seconds；Therefore continues 5s output low level in XOR gate and just illustrate that medical fluid has dripped off.
It rotates Step 3: controller 7 controls to adjust motor 304, so that infusion tube is compacted, can not continue to people
Body inputs medical fluid.Meanwhile controller 7 pulls out needle signal to the transmission of host computer 8；Host computer 8 notifies medical staff that patient is helped to pull out needle.
Claims (10)
1. a kind of venous transfusion detection device, including disposable transfusion device；It is characterized by also including vibration detection components, electricity
Pond and signal conversion circuit；The disposable transfusion device includes drop pot；The side of the drop pot is provided with piezoelectric patches insertion groove；
Piezoelectric patches insertion groove is connected to external environment, and is not connected to the inner cavity of drop pot；The vibration detection component include piezoelectric patches,
First arc panel and the second arc panel；One end of piezoelectric patches and the medial surface of the first arc panel are fixed；First arc panel and second
The one side edge of arc panel is hinged；
The signal conversion circuit includes charge amplification chip, voltage comparable chip and XOR gate；Charge amplification chip it is same
Phase input terminal is connected with the first terminals of piezoelectric patches, and is grounded；The second terminals, the capacitor C2 of anti-phase input termination piezoelectric patches
One end and resistance R7 one end；The other end of capacitor C2 and the other end of resistance R7 connect the output end of charge amplification chip；
The positive supply voltage of charge amplification chip terminates positive supply；Negative supply voltage terminates negative supply；
The voltage comparable chip includes the first operational amplifier and second operational amplifier；The positive power supply of voltage comparable chip
Voltage terminates positive supply, and negative supply voltage terminates negative supply；The non-inverting input terminal of first operational amplifier in voltage comparable chip
Ground connection, anti-phase input terminate the output end of charge amplifier U1, export the anode of terminating diode D2 and one end of resistance R8；Two
The cathode of pole pipe D2 connects the first input end of XOR gate；Another termination positive supply of resistance R8；Second fortune in voltage comparable chip
The output end of the homophase input termination charge amplification chip of amplifier is calculated, reverse inter-input-ing ending grounding exports terminating diode D3's
One end of anode and resistance R9；The cathode of diode D3 connects the second input terminal of XOR gate；Another termination positive supply of resistance R9.
2. a kind of venous transfusion detection device according to claim 1, it is characterised in that: further include warning circuit；It is described
Warning circuit include resistance R1, resistance R2, resistance R3, resistance R6, capacitor C1, voltage-stabiliser tube D1, buzzer, the first field-effect tube
M1 and the second field-effect tube M2；The output end of a termination XOR gate of resistance R1, the grid of the first field-effect tube M1 of another termination；
One end of the drain electrode connecting resistance R6 of first field-effect tube M1, another terminating resistor R2 of resistance R6, one end of capacitor C1 and pressure stabilizing
The cathode of pipe D1；The other end of first field-effect tube M1, the source electrode of the second field-effect tube M2 and capacitor C1 are grounded；Resistance R2's is another
One end of one termination button switch and resistance R3；The positive terminals of another termination buzzer of resistance R3；The negative wiring of buzzer
Terminate the drain electrode of the second field-effect tube M2；Resistance R2 and capacitor C1 forms RC charging circuit；The charging constant of the RC charging circuit
More than or equal to 4s；The burning voltage of voltage-stabiliser tube D1 is 0.5~0.8 times of cell output voltage.
3. a kind of venous transfusion detection device according to claim 1, it is characterised in that: further include controller and flow velocity tune
Save mechanism；The flow adjustment mechanism includes adjustment base, adjusting slider and adjusting driving assembly；It is offered in adjustment base
Infusion tube passage；Infusion tube on disposable transfusion device passes through the infusion tube passage on adjustment base；Adjusting slider and adjusting
Pedestal constitutes sliding pair；It is provided with flow on adjusting slider and adjusts pressure head；Flow adjusts pressure head and protrudes into infusion tube passage, and supports
Firmly infusion tube；The bottom surface of infusion tube passage and the axis of adjusting screw are not parallel；Adjust the control interface and controller of motor
Control output interface pass through motor driver connect；The signal input part of controller and the output end of XOR gate connect.
4. a kind of venous transfusion detection device according to claim 3, it is characterised in that: the controller and host computer
It is carried out wireless communication by wireless module.
5. a kind of venous transfusion detection device according to claim 3, it is characterised in that: the adjusting driving assembly packet
It includes adjusting screw and adjusts motor；The adjusting screw is supported on adjustment base；Adjusting slider and adjusting screw constitute spiral shell
Rotation is secondary；It adjusts motor to be fixed on adjustment base, and one end of output shaft and adjusting screw is fixed.
6. a kind of venous transfusion detection device according to claim 1, it is characterised in that: further include vibrating power-generation circuit；
The vibrating power-generation circuit includes rectifier bridge and voltage comparator；The first input end of the rectifier bridge, the second input terminal with
The first terminals, the second terminals of piezoelectric patches are respectively connected with；The cathode output end of rectifier bridge connect capacitor CE1, resistance RE1 one
End, the positive supply voltage end of voltage comparator, one end of resistance RE3, one end of resistance RE4 and the 4th field-effect tube M4 source
Pole, cathode output end connect the other end of capacitor CE1, one end of resistance RE2, the negative supply voltage end of voltage comparator, third
Source electrode, one end of capacitor CE2 and the cathode of battery of field-effect tube M3；The anti-phase input terminating resistor RE1 of voltage comparator and
The other end of resistance RE2, homophase input terminate the anode of battery, the grid and resistance RE3 of output termination third field-effect tube M3
The other end；The drain electrode of third field-effect tube M3 connects the grid of the 4th field-effect tube M4 and the other end of resistance RE4；4th effect
Should the grid of pipe M4 connect the other end of the second capacitor CE2 and the anode of battery.
7. a kind of venous transfusion detection device according to claim 6, it is characterised in that: the model of the XOR gate
74LS86；The model LM393 of the voltage comparator；The model OP37 of charge amplification chip；The voltage comparator U4
Model LM393；The model MB6S of the rectifier bridge.
8. a kind of venous transfusion detection device according to claim 1, it is characterised in that: first arc panel, second
Another side edge of arc panel is embedded with permanent magnet, iron block respectively；First arc panel, the second arc panel ring live to drip pot；Piezoelectric patches is stretched
Enter in piezoelectric patches insertion groove, and the upside face contact of the top surface of piezoelectric patches and piezoelectric patches insertion groove；The width of the piezoelectric patches is small
In the width of piezoelectric patches insertion groove；The length of piezoelectric patches is less than the depth of piezoelectric patches insertion groove, and is greater than the radius of drop pot.
9. a kind of venous transfusion detection device according to claim 1, it is characterised in that: the positive supply passes through battery
Anode output positive voltage obtained after voltage stabilizing chip；The negative supply inverts power adapter through polarity by positive supply
It obtains；The model ICL7660S of polarity reversion power adapter.
10. a kind of detection method of venous transfusion detection device as claimed in claim 3, it is characterised in that: Step 1: medical care
After personnel are patient's acupuncture treatment with disposable transfusion device, the piezoelectric patches on the piezoelectric patches insertion drop pot in vibration detection component is inserted into
Slot, and by the first arc panel and the second arc plate closing；
Step 2: starting medical fluid drop of persistently dripping in drop pot, piezoelectric patches is vibrated when medical fluid drips, and XOR gate just exports
One high level；Controller persistently receives the signal of XOR gate output, and records the low level duration；When controller detects
It is more than 5s that the low level time is persistently exported to XOR gate, then enters step three；
Step 3: controller controls to adjust motor rotation, so that infusion tube is compacted.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910344550.8A CN110152117B (en) | 2019-04-26 | 2019-04-26 | Venous transfusion detection device and detection method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910344550.8A CN110152117B (en) | 2019-04-26 | 2019-04-26 | Venous transfusion detection device and detection method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110624156A (en) * | 2019-10-18 | 2019-12-31 | 张伟 | Infusion support control circuit for obstetrics and gynecology department |
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| DE10349761A1 (en) * | 2003-10-24 | 2005-06-09 | Fresenius Kabi Deutschland Gmbh | Device for regulation of flow in artificial alimentation, assembled of a movable and a stationary jaw |
| CN2848235Y (en) * | 2004-04-10 | 2006-12-20 | 朱方文 | Transfusion monitoring apparatus for medical infusion system |
| WO2007007961A1 (en) * | 2005-07-14 | 2007-01-18 | Yong Hwan Kim | Ringer injection safety system |
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| CN104740725A (en) * | 2015-03-24 | 2015-07-01 | 华南理工大学 | Vein transfusion device regulating valve with nonlinear compensation |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4645175A (en) * | 1983-03-28 | 1987-02-24 | Baxter Travenol Laboratories | Modular clamp system with externally threaded adjuster |
| DE10349761A1 (en) * | 2003-10-24 | 2005-06-09 | Fresenius Kabi Deutschland Gmbh | Device for regulation of flow in artificial alimentation, assembled of a movable and a stationary jaw |
| CN2848235Y (en) * | 2004-04-10 | 2006-12-20 | 朱方文 | Transfusion monitoring apparatus for medical infusion system |
| WO2007007961A1 (en) * | 2005-07-14 | 2007-01-18 | Yong Hwan Kim | Ringer injection safety system |
| CN104408868A (en) * | 2014-11-21 | 2015-03-11 | 重庆威尔德浩瑞医药化工有限公司 | Alarming device of electronic equipment |
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| CN110624156A (en) * | 2019-10-18 | 2019-12-31 | 张伟 | Infusion support control circuit for obstetrics and gynecology department |
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