CN107412915B - A kind of infusion monitoring control system - Google Patents
A kind of infusion monitoring control system Download PDFInfo
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- CN107412915B CN107412915B CN201710719252.3A CN201710719252A CN107412915B CN 107412915 B CN107412915 B CN 107412915B CN 201710719252 A CN201710719252 A CN 201710719252A CN 107412915 B CN107412915 B CN 107412915B
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- Prior art keywords
- medical fluid
- shut
- infusion
- perfusion tube
- down mechanism
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Classifications
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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
- A61M5/16831—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
- 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
- A61M5/16813—Flow controllers by controlling the degree of opening of the flow line
-
- 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
- A61M5/16877—Adjusting flow; Devices for setting a flow rate
-
- 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
- A61M2205/3334—Measuring or controlling the flow rate
-
- 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
- A61M2205/3379—Masses, volumes, levels of fluids in reservoirs, flow rates
- A61M2205/3386—Low level detectors
Abstract
The present invention discloses a kind of infusion monitoring control system, includes: more than one medical fluid monitoring unit, signal processing unit and infusion apparatus shutdown unit；Its Chinese medicine liquid monitoring unit and transfusion bottle/bag to be monitored correspond, by the way that whether there are also medical fluids in condenser type medical fluid sensor real-time monitoring perfusion tube, when the change in the transfusion bottle/bag without causing medical fluid sensor capacitance capacity when medical fluid；Signal processing unit judges the presence or absence of perfusion tube Chinese medicine liquid according to the capacitance that medical fluid sensor is sent, and when judging in perfusion tube without medical fluid, issues to infusion apparatus shutdown unit and instructs without medical fluid；Infusion apparatus shutdown unit turns off perfusion tube after receiving no medical fluid instruction, prevents liquid medicine flow in perfusion tube.It can notify nurse is infused to complete with communication alert unit simultaneously, and inform that patient or caregiver are infused in the form of sound, light etc. and complete.The operating pressure that nurse can effectively be mitigated using the infusion monitoring control system, saves the time of caregiver, improves the level of informatization of medical care equipment.
Description
Technical field
Invention is related to a kind of control system, and in particular to a kind of infusion monitoring control system belongs to auxiliary medical care instrument neck
Domain.
Background technique
In infusion, if discovery medical fluid has been finished not in time, blood backflow will lead to infusion apparatus, therefore in infusion
Patient or caregiver must observe medical fluid liquid level at the moment, bring mental burden to patient or caregiver, waste and see
The time of shield personnel；When medical fluid will be finished, nurse must show up processing immediately, if this feelings occur simultaneously in several patients
Condition will lead to nurse and handle work strain.
For above situation, propose to the controller that is monitored automatically of infusion, it is existing at present that there is the function
There are two types of products, and one is utilize the variation for completing front and back medical fluid weight of being infused；Another kind has monitored whether medicine drop at dropping funnel
Movement.Former needs to know the weight of medical fluid, and the weight of medical fluid need to be arranged in when use；Latter needs adjustment to monitor when in use
The relative position of device and medicine drop, and the monitoring of single bottle (bag) medical fluid can only be carried out.Therefore, both the above product exists using not
Convenient problem there is now (or the similar production of infusion monitoring controller simultaneously because existing transfusion system usually has two bottles (bag) infusions
Product) one bottle (bag) can only be monitored, exist and the existing unmatched problem of transfusion system.
Summary of the invention
In view of this, the present invention provides a kind of infusion monitoring control system, more bottles (bag) infusions can be supervised simultaneously
Depending on controlling, and it is easy to use, to effectively mitigate the operating pressure of caregiver, improve the level of informatization of medical care equipment.
A kind of infusion monitoring control system, comprising: medical fluid monitoring unit, signal processing unit and infusion apparatus turn off unit；
In the medical fluid monitoring unit by condenser type medical fluid sensor real-time monitoring perfusion tube whether there are also medical fluid, when
Without causing the change of medical fluid sensor capacitance capacity when medical fluid in the transfusion bottle/bag；
The signal processing unit judges the presence or absence of perfusion tube Chinese medicine liquid according to the capacitance in the medical fluid sensor,
When judging in perfusion tube without medical fluid, Xiang Suoshu infusion apparatus turns off unit and issues without medical fluid instruction；
The infusion apparatus shutdown unit turns off perfusion tube after receiving no medical fluid instruction, prevents liquid medicine flow in perfusion tube.
Transfusion system to be monitored has more than one medical fluid bottle/bag, and each medical fluid bottle/bag is connected by a point of perfusion tube
Onto main infusion tube；Medical fluid bottle/bag in the medical fluid monitoring unit and transfusion system to be monitored corresponds；Medical fluid monitoring
The dividing on perfusion tube of corresponding medical fluid bottle/bag is arranged in unit；When monitoring in any medical fluid bottle/bag without medical fluid
When, the infusion apparatus shutdown unit turns off main infusion tube.
The medical fluid sensor includes: two electrodes, conducting wire, clip and clamp of sensor I and clamp of sensor II；Institute
State clamp of sensor I and clamp of sensor II middle part hingedly after one end by elastic component open be used as operating side, the other end two
Opposite face contact can be opened the working end by closed procedure end as working end；The clamp of sensor I and sensor
It being separately provided for placing the groove of electrode on two opposing end surfaces of II working end of fixture, the electrode is arcuate structure,
The shape of inner peripheral surface is consistent with perfusion tube shape, and two electrodes are opposite to form capacitor；In use, the perfusion tube is from two electrodes
It is passed through among the capacitor of composition.
The infusion apparatus shutdown unit includes control circuit and infusion shut-down mechanism；The control circuit is described for receiving
Signal processing unit is instructed without medical fluid；After the control circuit receives the instruction of no medical fluid, the infusion shutdown machine is controlled
Structure turns off perfusion tube；
The infusion shut-down mechanism includes: compression bar, spacer pin, electromagnet and pressure spring；The compression bar is opposite with perfusion tube, just
When the beginning, the compression bar is limited by spacer pin, and the pressure spring being sleeved on the compression bar at this time is in compressive state, compression bar not with it is defeated
Liquid pipe contact；When the control circuit receive control unit without medical fluid instruction after, control the electromagnet and be powered, pass through position
It drives spacer pin mobile to the direction far from compression bar in the push rod in electromagnet, releases the limit to compression bar；The compression bar releases
It is mobile to perfusion tube under the action of pressure spring restoring force after limit, perfusion tube is squeezed to prevent liquid medicine flow in perfusion tube.
The infusion shut-down mechanism further includes the resetting structure for resetting compression bar, and the resetting-mechanism includes: shutdown
Mechanism fixture I, shut-down mechanism fixture II and shut-down mechanism fixture III；The shut-down mechanism fixture I and shut-down mechanism fixture III exist
Hingedly rear one end is opened by elastic component as operating side at middle part, and the contact of two opposite face of the other end is used as working end；In shutdown machine
The hinged shut-down mechanism fixture II in the middle part hinged place of structure fixture I and shut-down mechanism fixture III；The behaviour of the shut-down mechanism fixture II
Make the top that end is located at I operating side of shut-down mechanism fixture, when press down on shut-down mechanism fixture II operating side make its with
After the operation end in contact of shut-down mechanism fixture I, the operating side for being able to drive shut-down mechanism fixture I is moved downward；When the compression bar
When in the unlocked state, in the middle part of the shaft shoulder contacted with the I working end end face of shut-down mechanism fixture；
The push rod housing has a spring for resetting the spacer pin, one end of the spring and is fixed in outside push rod
The baffle ring of circumference contradicts, and the end face of the other end and electromagnet contradicts.
The utility model has the advantages that
(1) the infusion monitoring control system is not contacted with medical fluid, is non-cpntact measurement, on former transfusion system without influence；And
It is not required to setting medical fluid weight, is not required to the relative position of adjustment with former transfusion system, it is easy to use.
(2) two bottles of (bag) infusion monitorings can be carried out simultaneously, it is adaptable.
(3) use of infusion monitoring controller can mitigate the mental burden of patient or caregiver, mitigate the work of nurse
Make pressure, save the time of caregiver, improves the level of informatization of medical care equipment.
Detailed description of the invention
Fig. 1 is the composition block diagram of the infusion monitoring control system；
Fig. 2 is the structural schematic diagram of medical fluid sensor；
Fig. 3 is signal deteching circuit schematic diagram；
Fig. 4 and Fig. 5 is infusion shut-down mechanism schematic diagram；
Fig. 6 uses schematic diagram for the infusion monitoring control system.
Wherein: 1- electrode I, 2- electrode II, 3- clamp of sensor I, 4- clip I, 5- clamp of sensor II, 6- cover board, 7-
Clip II, 8- electromagnet, 9- spacer pin, 10- shut-down mechanism fixture I, 11- pressure spring, 12- compression bar, 13- shut-down mechanism fixture II,
14- clip III, 15- shut-down mechanism fixture III, 16- push rod
Specific embodiment
The present invention will now be described in detail with reference to the accompanying drawings and examples.
The present embodiment provides the contactless infusion monitoring controls that one kind can simultaneously monitor two bottles (bag) infusions
System.
As shown in Figure 1, the infusion monitoring control system includes: medical fluid monitoring subsystem, infusion apparatus shutdown subsystem and leads to
Letter alarm subsystem.Its Chinese medicine liquid monitors that subsystem includes: medical fluid sensor, signal deteching circuit and signal processing circuit；It is defeated
It includes: the shut-down mechanism that switches off control circuit and be infused that liquid device, which turns off subsystem,；Communication alert subsystem includes telecommunication circuit and report
Alert circuit.The infusion monitoring control system monitors the transfusion system with two bottles (bag) infusion in the present embodiment, therefore
There are two medical fluid sensor and two signal deteching circuits for tool, and infusion is turned off when in any medicinal liquid bottle (bag) without medical fluid
System.
Transfusion system with two bottles (bag) infusion is as shown in fig. 6, include two medicinal liquid bottles (bag), each medicinal liquid bottle (bag)
By dividing perfusion tube to be connected in main infusion tube, dropping funnel is provided in main infusion tube.
Two of them medical fluid sensor is separately positioned on two medicinal liquid bottle (bag) and divides on perfusion tube, for real-time monitoring point
Whether there are also medical fluids in perfusion tube.Medical fluid sensor is capacitance type sensor, as shown in Fig. 2, including two electrode (I 1 Hes of electrode
Electrode II 2), conducting wire, clip I 4 and clamp of sensor I 3 and clamp of sensor II 5.Clamp of sensor I 3 and clamp of sensor
II 5 middle part hingedly after one end be working end, the other end is operating side；Wherein it is arranged between two opposite faces of operating side flexible
Clip I 4, under the action of I 4 tension of clip, two opposite faces of operating side open, and contact two opposite faces of working end；Pass through
Kneading operation end can separate two opposite faces of working end.The two of II 5 working end of clamp of sensor I 3 and clamp of sensor are opposite
It is separately provided for placing the groove of electrode on face, electrode is arcuate structure made of thin copper product, the shape of inner peripheral surface
Shape is consistent with perfusion tube shape, and two electrodes are opposite to form capacitor；Each electrode draws a conducting wire and is used to capacitor accessing signal
Detection circuit.In use, clamping a point perfusion tube by clamp of sensor I 3 and clamp of sensor II 5, make that perfusion tube is divided to be located at two
It between a electrode, that is, is passed through among the capacitor that is divided to perfusion tube to form from two electrodes, dividing the variation of medical fluid in perfusion tube, (whether there is or not medicines
Liquid) variation of capacitance can be caused.
Signal deteching circuit is used to for the detection parameters capacitance in medical fluid sensor to be transformed into the pulse for being easier to detection
Signal.Signal deteching circuit is arranged in infusion monitoring controller electronic box as shown in FIG. 6, and signal deteching circuit principle is as schemed
Shown in 3, wherein D1, D2, D3, D4 are four reversers on the same integrated chip SN54HC04, and SN54HC04 is six reversed
Device.Reverser D1, D2, resistance R1, R2 and capacitor C1 form multivibrator, and the signal that multivibrator generates is through transformer T1
By after the capacitance group formed by capacitor CT and capacitor C2 parallel connection enter reverser D3；Wherein capacitor C2 designs to be anti-interference,
CT is the capacitor that two electrodes form in medical fluid sensor；Reverser D3, D4, resistance R4 and capacitor C3 constitute pulse width tune
Whole circuit；Diode V1, resistance R5 and capacitor C4 constitute filter circuit.XP1 and XP2 is two sockets, wherein institute on socket XP1
The variation of pulse signal on the conducting wire of extraction is associated with the size of capacitor CT, the voltage on conducting wire that socket XP2 is drawn
Size it is associated with the size of capacitor CT.
Signal processing circuit passes through to judgement is infused after the sampling processing of pulse signal on socket XP1 in signal deteching circuit
The presence or absence of pipe Chinese medicine liquid, signal processing circuit are similarly disposed in infusion monitoring controller electronic box as shown in FIG. 6.At signal
Manage the treatment process of circuit are as follows: (a) pulse width calculates: using sampled signal (sample of signal to pulse on socket XP1)
Low level seeks the pulse width (negative pulse width) of single pulse signal, then takes the average value of multiple pulse widths；(b) at frequency domain
Reason: FFT (Fast Fourier Transform) first is carried out to the pulse signal of sampling and obtains the spectrum of pulse signal, then seeks spectrum envelope, finally
Seek the peak value of the second spectral peak of spectrum envelope；(c) according to obtained by the average value of the obtained pulse width of step (a) and/or step (b)
To the peak value of the second spectral peak of spectrum envelope determine the presence or absence of perfusion tube Chinese medicine liquid (whether there is or not pulse width when medical fluid and spectrums in perfusion tube
Peak is different)；When judging in perfusion tube without medical fluid, subsystem is turned off to infusion apparatus respectively and communication alert subsystem is issued without medicine
Liquid instruction.
After switching off control circuit in infusion apparatus shutdown subsystem receives no medical fluid instruction, control infusion shut-down mechanism is closed
Disconnected perfusion tube.Switch off control circuit and is arranged in infusion monitoring controller electronic box as shown in FIG. 6, infusion shut-down mechanism setting
In the main infusion tube of transfusion system, infusion shut-down mechanism uses the hanging of the conducting wire between controller electronic box.Infusion shutdown
Mechanism is as shown in Figure 4 and Figure 5, comprising: electromagnet 8, spacer pin 9, pressure spring 11, shut-down mechanism fixture and clip etc..It, which is connected, closes
System are as follows: hingedly rear one end is working end at middle part for shut-down mechanism fixture I 10 and shut-down mechanism fixture III 15, and the other end is operation
End；It wherein is provided with flexible collar II 14 between two opposite faces of operating side, under the action of II 14 tension of clip, operating side
Two opposite faces open, and contact two opposite faces of working end, can be separated two opposite faces of working end by kneading operation end.?
The hinged shut-down mechanism fixture 13 in the middle part hinged place of shut-down mechanism fixture I 10 and shut-down mechanism fixture III 15, shut-down mechanism fixture
II 13 operating side is located at the top of I 10 operating side of shut-down mechanism fixture, when downward push shut-down mechanism fixture II 13
After operating side makes its operation end in contact with shut-down mechanism fixture I 10, the operating side for being able to drive shut-down mechanism fixture I 10 is downward
Movement.
III 15 working end of shut-down mechanism fixture is provided on the end face opposite with shut-down mechanism fixture I 10 for making main infusion
Pipe across groove, be provided with compression bar 12 above the groove inside I 10 working end of shut-down mechanism fixture, be sleeved on outside compression bar 12
One end of pressure spring 11 and the inner surface of shut-down mechanism fixture I 10 contradict, the shaft shoulder at the other end and the middle part of compression bar 12 contradicts.With
The vertical direction of 12 axis of compression bar is provided with spacer pin 9, is provided on the outer circumference surface of the lower end of compression bar 12 corresponding with spacer pin 9
Limiting slot, when spacer pin 9 is located in the limiting slot, lock compression bar 12, pressure spring 11 is in compressive state, compression bar 12 at this time
Bottom is not contacted with main infusion tube；When spacer pin 9 releases the limit to compression bar 12, effect of the compression bar 12 in 11 restoring force of pressure spring
Under move down, squeeze perfusion tube deform main infusion tube, to prevent liquid medicine flow in main infusion tube.Wherein spacer pin 9 is dynamic
Make to control by electromagnet 8, specifically: electromagnet 8 in cover board 6 is connected by conducting wire with switching off control circuit, and is passed through
Switch off control circuit and controls the power on/off of electromagnet 8.Its cover plate 6 is mounted on the work of shut-down mechanism fixture I 10 by clip II 7
Make end；Electromagnet 8 is hollow structure, and one end of push rod 16 is sleeved in the centre bore of electromagnet 8, and the other end is provided with spacer pin
9；When electromagnet 8 is powered, push rod 16 drives spacer pin 9 to move along its axis under the action of electromagnetic force.It is cased with outside push rod 16
Spring, one end of spring are contradicted with the baffle ring for being fixed in 16 excircle of push rod, and the end face of the other end and electromagnet 8 contradicts.Limit
Pin 9 is opposite with the limiting slot on compression bar 12.Under normal condition, spacer pin 9, which is located in the limiting slot of compression bar 12, locks compression bar 12, when
It is mobile to 8 direction of electromagnet in the drive lower limit pin 9 of push rod 16 when electromagnet 8 is powered, release the limit to compression bar 12
Position；Compressed spring in 16 moving process of push rod.When electromagnet 8 powers off, push rod 16 is under the action of spring-return power to separate
The direction of electromagnet 8 is mobile, and then drives spacer pin 9 mobile to the direction far from electromagnet 8.
Its working principle is that: when initial, spacer pin 9 is located in the limiting slot of compression bar 12, and compression bar 12 is in the lock state, no
It is contacted with main infusion tube.Transfusion system starts the power switch that dropping monitor is opened after working normally, and dropping monitor starts
Work；When some divides in perfusion tube without medical fluid, the capacitance of capacitor CT changes in medical fluid sensor；Capacitor CT capacitance
Variation by signal processing circuit detection confirmation after, to switch off control circuit issue control signal, switch off control circuit and receive
After controlling signal, the electromagnet 8 in control infusion shut-down mechanism is powered, and electromagnet 8 drives spacer pin 9 to act, from compression bar 12
It is detached from limiting slot, compression bar 12 is unlocked, and moving downward under the action of pressure spring 11 deforms main infusion tube, to prevent master defeated
Liquid medicine flow in liquid pipe.
When needing to reset compression bar 12, by the way of operating common fixture (son), while shut-down mechanism fixture II is pressed
13 and shut-down mechanism fixture III 15 operating side (i.e. mediate shut-down mechanism fixture II 13 and shut-down mechanism fixture III 15 operation
End), when in the unlocked state due to compression bar 12, in the middle part of the shaft shoulder contacted with II 13 working end end face of shut-down mechanism fixture, pinch
When closing operation end, compression bar 12 is jacked up by the shaft shoulder；When the limiting slot of compression bar 12 is opposite with spacer pin 9, spacer pin 9 enters pressure
The limiting slot of bar 12, compression bar 12, which resets, to be completed；Continue the operation of kneading shut-down mechanism fixture II 13 and shut-down mechanism fixture III 15
End is further continued for kneading action after operating side and the operation end in contact of shut-down mechanism fixture I 10 of shut-down mechanism fixture II 13,
The then operating side of shut-down mechanism fixture I 10 moving downward by pressure in II 13 operating side of shut-down mechanism fixture, makes shut-down mechanism
Fixture I 10 is just separated with the working face of shut-down mechanism fixture III 15, and main infusion tube is put into III 15 work of shut-down mechanism fixture at this time
Make in the groove in face.Then the operating side for unclamping shut-down mechanism fixture I 10, II 13 and shut-down mechanism fixture III 15, makes its operation
End is opened under the action of clip II 14, working end closure.
After communication alert subsystem receives no medical fluid instruction, notify nurse is infused to complete by telecommunication circuit, and pass through
Warning circuit is alarmed in the form of sound, light etc., is completed to inform that patient or caregiver are infused.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (7)
1. a kind of infusion monitoring control system characterized by comprising medical fluid monitoring unit, signal processing unit and infusion apparatus
Turn off unit；
By the way that whether there are also medical fluids in condenser type medical fluid sensor real-time monitoring perfusion tube in the medical fluid monitoring unit, work as medical fluid
Without causing the change of medical fluid sensor capacitance capacity when medical fluid in bottle/bag；
The signal processing unit judges the presence or absence of perfusion tube Chinese medicine liquid according to the capacitance in the medical fluid sensor, when sentencing
When in disconnected perfusion tube without medical fluid, Xiang Suoshu infusion apparatus turns off unit and issues without medical fluid instruction；
The infusion apparatus shutdown unit turns off perfusion tube after receiving no medical fluid instruction, prevents liquid medicine flow in perfusion tube；
The medical fluid sensor includes: two electrodes, conducting wire, clip and clamp of sensor I and clamp of sensor II；The biography
Hingedly by elastic component opening as operating side, the other end two is opposite for rear one end at middle part for sensor fixture I and clamp of sensor II
Face contact can be opened the working end by closed procedure end as working end；The clamp of sensor I and clamp of sensor
It is separately provided for placing the groove of electrode on two opposing end surfaces of II working end, the electrode is arcuate structure, inner circle
The shape of circumferential surface is consistent with perfusion tube shape, and two electrodes are opposite to form capacitor；In use, the perfusion tube is formed from two electrodes
Capacitor among pass through；
The infusion apparatus shutdown unit includes control circuit and infusion shut-down mechanism；The control circuit is for receiving the signal
Processing unit is instructed without medical fluid；After the control circuit receives the instruction of no medical fluid, controls the infusion shut-down mechanism and close
Disconnected perfusion tube；
The infusion shut-down mechanism includes: compression bar, spacer pin, electromagnet and pressure spring；The compression bar is opposite with perfusion tube, initially
When, the compression bar is limited by spacer pin, and the pressure spring being sleeved on the compression bar at this time is in compressive state, compression bar not with infusion
Pipe contact；When the control circuit receive control unit without medical fluid instruction after, control the electromagnet and be powered, by being located at
Push rod in electromagnet drives spacer pin mobile to the direction far from compression bar, releases the limit to compression bar；The compression bar releases limit
It is mobile to perfusion tube under the action of pressure spring restoring force behind position, perfusion tube is squeezed to prevent liquid medicine flow in perfusion tube；
The infusion shut-down mechanism further includes the resetting structure for resetting compression bar, and the resetting-mechanism includes: shut-down mechanism
Fixture I, shut-down mechanism fixture II and shut-down mechanism fixture III；The shut-down mechanism fixture I and shut-down mechanism fixture III are at middle part
One end is opened by elastic component after hinged is used as operating side, and the contact of two opposite face of the other end is used as working end；It is pressed from both sides in shut-down mechanism
The hinged shut-down mechanism fixture II in middle part hinged place of tool I and shut-down mechanism fixture III；The operating side of the shut-down mechanism fixture II
Positioned at the top of I operating side of shut-down mechanism fixture, when the operating side for pressing down on shut-down mechanism fixture II makes itself and shutdown
After the operation end in contact of mechanism fixture I, the operating side for being able to drive shut-down mechanism fixture I is moved downward；When the compression bar is in
When unlocked state, in the middle part of the shaft shoulder contacted with the I working end end face of shut-down mechanism fixture；
The push rod housing has a spring for resetting the spacer pin, one end of the spring and is fixed in push rod excircle
Baffle ring contradict, the end face of the other end and electromagnet contradicts.
2. infusion monitoring control system as described in claim 1, transfusion system to be monitored have more than one medicinal liquid bottle/
Bag, each medical fluid bottle/bag are connected in main infusion tube by a point of perfusion tube；It is characterized in that, the medical fluid monitoring unit with
Medical fluid bottle/bag in transfusion system to be monitored corresponds；Corresponding medical fluid bottle/bag is arranged in medical fluid monitoring unit
Divide on perfusion tube；When monitoring in any medical fluid bottle/bag without medical fluid, the infusion apparatus shutdown unit turns off main infusion
Pipe.
3. infusion monitoring control system as claimed in claim 1 or 2, which is characterized in that also set in the medical fluid monitoring unit
It is equipped with signal deteching circuit, the signal deteching circuit is sent out after the capacitance of the medical fluid sensor is changed into pulse signal
Give the signal processing unit, pulse width or spectrum envelope the of the signal processing unit according to the pulse signal received
The peak value of two spectral peaks judges the presence or absence of perfusion tube Chinese medicine liquid.
4. infusion monitoring control system as claimed in claim 3, which is characterized in that the signal deteching circuit includes: multi resonant
Oscillator and pulse width adjusting circuit；The output signal of multivibrator is passed through by capacitor CT and capacitor C2 simultaneously after transformer T1
Enter pulse width adjusting circuit, pulse width adjusting circuit output pulse signal after joining the capacitance group formed；Wherein capacitor C2
For anti-interference, CT is the capacitor in the medical fluid sensor；The change of the pulse signal of the pulse width adjusting circuit output
Change associated with the size of capacitor CT.
5. infusion monitoring control system as claimed in claim 4, which is characterized in that the signal deteching circuit further includes filtering
The output signal of circuit, the pulse width adjusting circuit enters filter circuit, exports after the filter circuit, the output end
The size of voltage is associated with the size of capacitor CT on mouth.
6. infusion monitoring control system as claimed in claim 3, which is characterized in that the signal processing unit is to receiving
The treatment process of pulse signal are as follows:
(a) pulse width calculates: sampling to the pulse signal received, obtains sampled signal；Pass through the low level of sampled signal
The pulse width of single pulse signal is sought, then takes the average value of more than two pulse widths；
(b) frequency domain is handled: first being carried out Fast Fourier Transform to the pulse signal received and is obtained the spectrum of pulse signal, then seeks spectrum
Envelope finally seeks the peak value of the second spectral peak of spectrum envelope；
(c) according to the average value of the obtained pulse width of step (a) and/or obtained the second spectral peak of spectrum envelope of step (b)
Peak value determine the presence or absence of perfusion tube Chinese medicine liquid；When judging in perfusion tube without medical fluid, Xiang Suoshu infusion apparatus turns off unit and issues
No medical fluid instruction.
7. infusion monitoring control system as claimed in claim 1 or 2, which is characterized in that further include communication alert unit, work as institute
When stating signal processing unit and judging in perfusion tube without medical fluid, Xiang Suoshu communication alert unit is issued to be instructed without medical fluid；The communication
It after alarm unit receives no medical fluid instruction, is alarmed in the form of sound, light, notifies related personnel is infused to complete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710719252.3A CN107412915B (en) | 2017-08-21 | 2017-08-21 | A kind of infusion monitoring control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710719252.3A CN107412915B (en) | 2017-08-21 | 2017-08-21 | A kind of infusion monitoring control system |
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| CN110711290B (en) * | 2019-10-11 | 2021-12-31 | 罗云汉 | Infusion liquid medicine detecting system |
| CN111317594B (en) * | 2020-02-28 | 2023-10-20 | 广州迈普再生医学科技股份有限公司 | Automatic artificial blood vessel production device |
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| CN101190346A (en) * | 2006-11-20 | 2008-06-04 | 深圳市鹏远达科技发展有限公司 | Transfusion monitoring instrument |
| CN201921207U (en) * | 2010-12-21 | 2011-08-10 | 谷华峰 | Infusion alarm |
| US9759343B2 (en) * | 2012-12-21 | 2017-09-12 | Deka Products Limited Partnership | Flow meter using a dynamic background image |
| CN103127582A (en) * | 2013-01-23 | 2013-06-05 | 深圳市发掘科技有限公司 | Transfusion alarming device |
| CN104958810A (en) * | 2015-07-24 | 2015-10-07 | 广西水利电力职业技术学院 | Liquid level automatic alarm device in medical transfusion |
| CN206152011U (en) * | 2016-08-01 | 2017-05-10 | 中国人民解放军总医院 | Infusion control device |
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