CN105288785B - A kind of hospital ward infusion automatic warning device - Google Patents
A kind of hospital ward infusion automatic warning device Download PDFInfo
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- CN105288785B CN105288785B CN201510595059.4A CN201510595059A CN105288785B CN 105288785 B CN105288785 B CN 105288785B CN 201510595059 A CN201510595059 A CN 201510595059A CN 105288785 B CN105288785 B CN 105288785B
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- main shaft
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- medicine bottle
- spring
- hall sensor
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Abstract
The invention discloses a kind of hospital ward infusion automatic warning devices, including live weight signal processing transmission unit, nurse station master controller, a medicine bottle weighing device for acquiring medicine bottle weight information and passing to live weight signal processing transmission unit, medicine bottle weighing device includes main shaft, main shaft support set etc.；One end of main shaft is equipped with the hook of suspension medicine bottle, another end is equipped with the blind hole for placing magnet steel, and middle part is arranged with a spring；Hall sensor is fixed on the surface of magnet steel, and there are gaps；As infusion carries out, the liquid in medicine bottle gradually decreases, and telescopic spring amount changes, and so that main shaft is covered relative to main shaft support and generates axial displacement, changes the distance between magnet steel and Hall sensor, the output voltage signal of Hall sensor is made to change.Its is simple in structure, safe and reliable, while mitigating the anxiety and working strength of nurse significantly, has pacified the mood of patient, has improved medical service of hospital quality.
Description
Technical field
The present invention relates to the monitoring of hospital ward infusion more particularly to a kind of hospital ward infusion automatic warning devices.
Background technology
Ward between modern hospital inpatient department has mostly, infusion of having an injection are the routine works that nurses will carry out daily.But by
Few in nurse, Bing Renduo, nurses, which will constantly make an inspection tour, checks each ward situation, to replace after new drug injection again or eventually in time
Only inject.If do not handled in time after former infusion bottle emptying, it may result in backflow of blood and enter woven hose, cause doctor
Treatment accident.Especially at night, when patient's lethargic sleep and nobody see in the case of regarding, completion of being infused it is timely discovery and handling problems
It will extremely highlight.The today for improving medical service quality is being advocated, eliminating such hidden danger in fact becomes the common recognition of each hospital.
Invention content
The shortcomings that it is an object of the invention to overcome the above-mentioned prior art and deficiency, provide it is a kind of when infusion is near completion or
When person is completed, the hospital ward that can warn in time infusion automatic warning device, it is simple in structure, safe and reliable, easy to use,
While mitigating the anxiety and working strength of nurse significantly, the mood of patient is preferably pacified, has improved hospital doctor
Treat service quality.
The present invention is achieved through the following technical solutions：
A kind of hospital ward infusion automatic warning device, including live weight signal processing transmission unit, nurse station master control
Device processed, a medicine bottle weighing device for acquiring medicine bottle weight information and passing to live weight signal processing transmission unit,
The medicine bottle weighing device includes main shaft 8, main shaft support set 11, hollow locking nut 12；
One end of the main shaft 8 is equipped with a hook 7 for hanging medicine bottle, another end is equipped with for placing magnetic
The blind hole 10 of steel, middle part are arranged with a spring 8-1；
It is main shaft location hole 11-1 that the main shaft support, which covers 11 one end, and the other end is the spring accommodating chamber 11-2 of spring 8-1；
The main shaft support set 11 is arranged the middle part with main shaft 8, and 7 end of hook of main shaft 8 passes through spring 8-1 and stretches out main shaft
Outside location hole 11-1；The outside of spring accommodating chamber 11-2 is stretched out at another end of main shaft 8；
One end of spring 8-1 offsets with main shaft orientation hole 11-1, the other end with by being buckled on 8 jump-ring slot 8-2 of main shaft
Clamp spring 9 offset；Spring 8-1, clamp spring 9 and main shaft 8 pass through the hollow locking nut mounted on this end spring accommodating chamber 11-2
12 are limited in main shaft support set 11；
Magnet steel is fixed in blind hole 10, and Hall sensor 19 is fixed on the surface of magnet steel, magnet steel and Hall sensor 19
Between there are gaps；
Medicine bottle is hung on hook 7, and as infusion carries out, the liquid in medicine bottle gradually decreases, and spring 8-1 strokes change
Become, so that main shaft 8 is generated axial displacement relative to main shaft support set 11, change the distance between magnet steel and Hall sensor 19,
The output voltage signal of Hall sensor 19 is set to change.
The scene weight signal processing and transmission unit include：Hall sensor 19, letter for acquiring medicine bottle weight
Number adjustment circuit 18, microprocessor second 17, circuit noise filter circuit second 13, CAN bus driver second 14, photoelectric isolating circuit
Second 15 and CAN controller second 16；The Hall sensor 19 connects microprocessor second 17 by signal adjustment circuit 18；Institute
It states circuit noise filter circuit second 13 and is sequentially connected CAN bus driver second 14, photoelectric isolating circuit second 15, CAN bus control
Device second 16 and microprocessor second 17.
The microprocessor second 17 is also respectively connected with LCD MODULE 22 and three-color LED door dodges 4.
The nurse station master controller includes：Circuit noise filter first 23, CAN bus driver first 24, Phototube Coupling
Circuit first 25, CAN controller first 26, microprocessor first 27, display device, acousto-optic hint device；The circuit noise filter
Wave device first 23 is sequentially connected CAN bus driver first 24, photoelectric isolating circuit first 25, CAN controller first 26 and microprocessor
Device first 27；The display device and acousto-optic suggestion device are separately connected microprocessor first 27.
The display device includes LED digital display devices 28 and decoder driver circuit.
The acousto-optic hint device includes the buzzer 30, three-color LED lamp group 32 and its driving circuit 31.Micro- place
Reason device first 27 is also connected with keyboard and interface circuit, RS-232 serial line interfaces.
The present invention compared with the existing technology, has the following advantages and effect：
Present invention employs medicine bottle weighing device, infusion bottle is suspended on hook；When patient starts infusion, due to infusion bottle
Interior liquid is more, and at this time due to the effect of gravity, the distance between magnet steel and Hall sensor are farthest；With pushing away for time
Into, the liquid in medicine bottle gradually decreases, and weight gradually mitigates, at this point, main shaft is constantly moved axially upward under the action of the spring,
And then the distance between magnet steel in groove and Hall sensor is made to be gradually shortened, finally believe the output voltage of Hall sensor
It number also changes.The voltage signal is sent to signal adjustment circuit by Hall sensor, then by signal adjustment circuit that its is defeated
Microprocessor second is given, after being handled by microprocessor second, the information of the infusion bottle inner liquid medicine amount is passed through into Liquid Crystal Module and three
Color LED gate light reminder alarm care providers allow nurse on duty in nurse station or corridor passageway just it can be found that and each ward of understanding
Real-time transfusion condition, so that they can be disposed in time, this for mitigate nurse anxiety and working strength, peace
Comfort patient's mood, raising medical service of hospital quality will all bring prodigious help.
Description of the drawings
Fig. 1 is the medicine bottle weighting device structure schematic diagram one of hospital ward of the present invention infusion automatic warning device.
Fig. 2 is the medicine bottle weighting device structure schematic diagram two of hospital ward of the present invention infusion automatic warning device.
Fig. 3 is the medicine bottle weighting device structure schematic diagram three of hospital ward of the present invention infusion automatic warning device.
Fig. 4 is the medicine bottle weighing device assembling schematic diagram of hospital ward of the present invention infusion automatic warning device.
Fig. 5 is the processing of live weight signal and the transmission unit structure side of hospital ward of the present invention infusion automatic warning device
Block diagram.
Fig. 6 is the nurse station Host Controller Architecture block diagram of hospital ward of the present invention infusion automatic warning device.
The schematic diagram of the weight signal processing of the scenes Fig. 7 Fig. 6 and transmission unit circuit.
Fig. 8 is the schematic diagram of Fig. 7 nurse stations main controller circuit.
Fig. 9 is the schematic diagram of decoder driver circuit.
Figure 10 is the schematic diagram of three-color LED lamp group driving circuit.
Figure 11 is nurse station master controller panel schematic diagram.
Figure 12 is the panel schematic diagram of live weight signal processing and transmission unit.
Figure 13 is the topology diagram of hospital ward of the present invention infusion automatic warning device.
Specific implementation mode
The present invention is more specifically described in detail with reference to specific embodiment.
Embodiment
As shown in Fig. 1 to 13.Hospital ward infusion automatic warning device of the present invention, including the processing of live weight signal are sent
Unit, nurse station master controller, one for acquiring medicine bottle weight information and passing to live weight signal processing transmission unit
Medicine bottle weighing device, the medicine bottle weighing device include main shaft 8, main shaft support set 11, hollow locking nut 12；
One end of the main shaft 8 is equipped with a hook 7 for hanging medicine bottle, another end is equipped with for placing magnetic
The blind hole 10 of steel, middle part are arranged with a spring 8-1；
It is main shaft location hole 11-1 that the main shaft support, which covers 11 one end, and the other end is the spring accommodating chamber 11-2 of spring 8-1；
The main shaft support set 11 is arranged the middle part with main shaft 8, and 7 end of hook of main shaft 8 passes through spring 8-1 and stretches out main shaft
Outside location hole 11-1；The outside of spring accommodating chamber 11-2 is stretched out at another end of main shaft 8；
One end of spring 8-1 offsets with main shaft orientation hole 11-1, the other end with by being buckled on 8 jump-ring slot 8-2 of main shaft
Clamp spring 9 offset；Spring 8-1, clamp spring 9 and main shaft 8 pass through the hollow locking nut mounted on this end spring accommodating chamber 11-2
12 are limited in main shaft support set 11；
Magnet steel is fixed in blind hole 10, and Hall sensor 19 is fixed on the surface of magnet steel, magnet steel and Hall sensor 19
Between there are gaps；
Medicine bottle is hung on hook 7, and as infusion carries out, the liquid in medicine bottle gradually decreases, and spring 8-1 strokes change
Become, so that main shaft 8 is generated axial displacement relative to main shaft support set 11, change the distance between magnet steel and Hall sensor 19,
The output voltage signal of Hall sensor 19 is set to change.
The scene weight signal processing and transmission unit include：Hall sensor 19, letter for acquiring medicine bottle weight
Number adjustment circuit 18, microprocessor second 17 (internal elements such as CPU2, A/D converter, I/O interfaces), circuit noise filter circuit
Second 13, CAN bus driver second 14, photoelectric isolating circuit second 15 and CAN controller second 16；The Hall sensor 19 is logical
It crosses signal adjustment circuit 18 and connects microprocessor second 17；The circuit noise filter circuit second 13 is sequentially connected CAN bus driving
Device second 14, photoelectric isolating circuit second 15, CAN controller second 16 and microprocessor second 17.
The microprocessor second 17 is also respectively connected with LCD MODULE 22 and three-color LED door dodges 4.
The nurse station master controller includes：Circuit noise filter first 23, CAN bus driver first 24, Phototube Coupling
Circuit first 25, CAN controller first 26, microprocessor first 27, display device, acousto-optic hint device；The circuit noise filter
Wave device first 23 is sequentially connected CAN bus driver first 24, photoelectric isolating circuit first 25, CAN controller first 26 and microprocessor
Device first 27；The display device and acousto-optic suggestion device are separately connected microprocessor first 27.
The display device includes LED digital display devices 28 and decoder driver circuit 29.
The acousto-optic hint device includes the buzzer 30, three-color LED lamp group 32 and its driving circuit 31.
The microprocessor first 27 is also connected with keyboard and interface circuit, RS-232 serial line interfaces.
As shown in Figure 5, Figure 7, the output signal of Hall sensor 19 (hall displacement transducer) passes through signal adjustment circuit
The A/D converter in CPU2 is given after 18, signal adjustment circuit 18 is made of a piece of four-operational amplifier 17, and it is defeated to can be used to adjustment
The zero and range of liquid bottle weighing-up wave；The a plurality of pin of CAN controller second 16 is connected with CPU2, its serial input exports
Pin RXD, the TXD of pin RX0, TX0 after the isolation of two high speed optoelectronic devices 14,15 with CAN bus driver second 14
It is connected, and output pin CANH, CANL of CAN bus driver second 14 company in parallel with CAN transfer bus 5-- twisted-pair cables
It connects；Character liquid crystal display selects the module with serial line interface, it only needs two I/O lines P2.3, P2.4 to can be realized CPU2 pairs
The control of LCD MODULE 22；CPU2 is also existed after transistor Q1~Q3 drivings with setting by its I/O mouthfuls of P1.5~P1.7
The three-color LED gate light 4 on ward doorway is connected, and medicine bottle capacity setting switch 21 is directly connected with the I/O of CPU2 mouths.
Circuit noise filter circuit second 13 is by two capacitances C11, C12 being attempted by CAN bus and two transient supressions
Diode D4, D5 link composition, capacitance C11, capacitance C12 can filter out the High-frequency Interference in CAN bus and reduce to environment
Electromagnetic radiation, and diode D4, diode D5 are then used for releasing lightning surge electric current, and certain protection is played to system equipment
Effect.It is excessive in order to limit the electric current in bus, two small valued resistors have been concatenated in the bus, CAN bus can be protected to receive
Send out impact of the driver from overcurrent.
As shown in Fig. 6, Fig. 8, nurse station master controller includes：Circuit noise filter first 23, CAN bus driver first
24, photoelectric isolating circuit first 25, CAN controller first 26, microprocessor first 27 (CPU1), for ward and infusion complete hundred
The aobvious LED digital display devices 28 of score and its decoder driver circuit 29, buzzer 30, three-color LED lamp group 32 and its driving electricity
Road 31, keyboard and interface circuit, RS-232 serial line interfaces, level-conversion circuit 34 and master controller panel etc.；Circuit noise
Filter circuit first 23 is made of capacitance C1, capacitance C2 and two transient supression diode D1, diode D2, and connection is single with scene
Member is identical.The input terminal of CAN bus driver first 24 connects with CAN bus, and output connects photoelectric isolating circuit first 25, through isolation
Signal afterwards is sent to CAN controller first 26；CAN controller first 26, keyboard and interface circuit, RS-232 serial interfaces
Mouthful, level-conversion circuit 34 is connected with CPU1 respectively；Buzzing 30 is rung to be controlled by transistor Q1 by CPU1；It translates
The input signal of code driving circuit 29 and the driving circuit 31 of three-color LED lamp group both is from the I/O pins of CPU1.
As shown in figure 9,6 LED charactrons in LED digital display devices 28 by CPU1 I/O mouth P2.5~P2.7 into
Row control, Coding and driving then seals in by six-and go out shift register 74HC595 to complete, these shift registers are cascades
Connection, i.e., first highest order overflows the data input pin SER ... ... of second shift register of termination, so cascades
Go down, until 6 wholes connect well.Under the control of CPU1, the binary data string on data input pin SER is appeared in,
Under the action of shift pulse SRCLK, will a ground precession forward, when all 6 LED data totally 48 be displaced to it is specified
Behind position, then to each shift register send output latch enabling nulse RCLK, at this time these binary data bits will go out
Thus output end transistor Q7-Q0 now shows to refresh.
As shown in Figure 10, the driving of three-color LED lamp group 32 be also sealed in by multi-disc-and go out shift register 74HC595 Lai
It completes, the connection type and LED charactrons driving circuit of these shift registers are just the same.Sick bed is opened with every ward three
For totally 40 wards, share 120 sick beds, therefore need 120 three-color LED lights altogether, each three-color LED light by three lines into
Row control, show respectively it is green, yellow, red, therefore need 120 × 3=360 control line.And per it is a piece of seal in-and go out shift LD
Device only has 8 output lines, so needing 45 shift registers altogether.To improve the driving capability of control signal, it is added in circuit
A piece of line driver for isolating 74HC245.Three signal wires from CPU1 be connected to line driver for isolating IC25 (photoelectricity every
From circuit first 25) input terminal, wherein DAT meets A0, and SRCLK meets A1 and A2, and RCLK meets A3 and A4.It is exported from line driver for isolating
SER signal be only sent to first seal in-and go out the data input pin of shift register IC26 (CAN controller first 26),
And the SRCLK signals come out from line driver for isolating are then sent to the corresponding pins of all shift registers, RCLK signal also with institute
There is shift register corresponding pin to be connected.It is also to be realized under the control of CPU1 that the status display of three-color LED lamp group 32, which refreshes,
It shows that flush mechanism is same as above.
As shown in figure 11, the panel of nurse station master controller can be etched by aluminium sheet, be equipped with thereon：Two groups of LED numbers
(wherein first group is made of code pipe 4 charactrons, shows ward number+sick bed number, and second group is made of 2 charactrons, and display should
The completed percentage of sick bed infusion), each ward transfusion state three-color LED indicator light 32, keyboard 33, buzzer 30.LED is digital
The content that window of tube is shown is：When 95% or more of amount of infusion is completed in the liquid in a certain infusion bottle, system will be shown at once
Show the corresponding sick bed number for being switched to the ward, nurse on duty is prompted to go to processing；If occur many places infusion bottle be completed 95% with
When upper, then carried out queuing wheel marquis by the sequencing that the moment occurs and show.After near preceding infusion bottle completion processing, just show
The ward and corresponding bed label that a secondary moment occurs；If all infusions all do not reach 95% or more, window is showing certain ward just
Normal infusion percentage.When any infusion is completed up to 95% or more, system will be at once by the transfusion state three in corresponding ward
Color LED light becomes red, and it is allowed constantly to flicker, while buzzer sends out the sound, and medical staff is made to know at a glance
Road is which ward situation to be treated occurs.When being infused normal, bright three color of the corresponding transfusion state instruction of system point
Lamp, in green；When infusion is completed to reach 85% or more, tri-colour LED turns yellow, and medical staff is reminded to pay attention to the patient
Infusion have been approached completion.
Keyboard 33 is used to input some instructions or data to system.Function key F1, which is used for switching digital window, shows different diseases
The infusion percentage of bed；F2 is then defined as automatic cycle and shows that each sick bed infusion completes percentage；F3 is defined as buzzer noise reduction,
When the infusion of any infusion bottle is completed up to 95% or more, buzzer will send out the sound.To be reduced to the maximum extent to Hospitalization environment
Influence, buzzer takes resting period ring mode, is pressed until F3 makes buzzer stopping pipe until there is medical staff；F4
It is defined as two alarms of modification and completes percentage thresholds：One is the early warning value for making three-color LED indicator light turn yellow, and default value is
85%, the other is three-color LED indicator light is made to become red alarming value, default value 95%.
The panel of the scenes Figure 12 weight signal processing transmission unit can be formed by PVC film silk-screen, be equipped with liquid crystal thereon
Display module 22 can show 2 line characters or number：The first row shows ward number+sick bed number, and the second row, which is shown, is completed infusion
The percentage of total amount.
Start to be laid with 5 to every ward of sheath twisted-pair cable with shielded layer at Figure 13 nurse stations master controller 1, each
Junction box 6 is installed in ward turnoff, thus draws branch cable and is connected to the live weight signal processing transmission list of every sick bed
On first 3 (abbreviation extension sets), extension set is fixed on wall.Every ward doorway fills a Tricolor LED transfusion state instruction
Lamp 4, by all extension set co- controllings in same ward.
In Fig. 7 to 10：IC1 selects STC12C5A 16S2, IC2 that SJA 1000, IC3 is selected to select TJA 1050, IC4, IC5 choosing
6N137, IC6 select MAX232, IC7 select MAX1232, IC8 select 74HC21, IC9 select 74HC00, IC11 select STC12C5A 16S2,
IC12 selects SJA 1000, IC13 that TJA 1050, IC14, IC15 is selected to select 6N137, IC16 that MAX1232, IC17 is selected to select LM324, Hall
Sensor selects AN51E；LCD MODULE selects JBC0802AOS-02Y, it is that a kind of character mode lcd with serial line interface is shown
Device.
As described above, the present invention can be better realized.
Embodiment of the present invention are not limited by the above embodiments, other any Spirit Essences without departing from the present invention
With under principle made by changes, modifications, substitutions, combinations, simplifications, should be equivalent substitute mode, be included in the present invention
Within protection domain.
Claims (6)
- The automatic warning device 1. a kind of hospital ward is infused, including live weight signal processing transmission unit, nurse station main control Device, which is characterized in that further include one and handle transmission unit for acquiring medicine bottle weight information and passing to live weight signal Medicine bottle weighing device, the medicine bottle weighing device includes main shaft（8）, main shaft support set（11）, hollow locking nut（12）；The main shaft（8）An end be equipped with one for hanging the hook of medicine bottle（7）, another end is equipped with for placing magnetic The blind hole of steel（10）, middle part is arranged with a spring（8-1）；The main shaft support set（11）One end is main shaft location hole（11-1）, the other end is spring（8-1）Spring accommodating chamber （11-2）；The main shaft support set（11）It is sheathed on main shaft（8）Middle part, main shaft（8）Hook（7）End is across spring（8-1）And it stretches Go out main shaft orientation hole（11-1）It is external；Main shaft（8）Another end stretch out spring accommodating chamber（11-2）Outside；Spring（8-1）One end and main shaft orientation hole（11-1）It offsets, the other end is by buckle and in main shaft（8）Jump-ring slot （8-2）On clamp spring（9）It offsets；Spring（8-1）, clamp spring（9）And main shaft（8）By being mounted on spring accommodating chamber（11-2）End The hollow locking nut at end（12）It is limited in main shaft support set（11）It is interior；Magnet steel is fixed on blind hole（10）It is interior, Hall sensor（19）It is fixed on the surface of magnet steel, magnet steel and Hall sensor （19）Between there are gaps；Medicine bottle hangs on hook（7）On, as infusion carries out, the liquid in medicine bottle gradually decreases, spring（8-1）Stroke changes Become, makes main shaft（8）Relative to main shaft support set（11）Axial displacement is generated, magnet steel and Hall sensor are changed（19）Between Distance makes Hall sensor（19）Output voltage signal change；The scene weight signal handles transmission unit and includes：Hall sensor for acquiring medicine bottle weight（19）, signal tune Whole circuit（18）, microprocessor second（17）, circuit noise filter circuit second（13）, CAN bus driver second（14）, Phototube Coupling Circuit second（15）With CAN controller second（16）；The Hall sensor（19）Pass through signal adjustment circuit（18）It connects micro- Processor second（17）；The circuit noise filter circuit second（13）It is sequentially connected CAN bus driver second（14）, Phototube Coupling electricity Lu Yi（15）, CAN controller second（16）With microprocessor second（17）.
- The automatic warning device 2. hospital ward according to claim 1 is infused, which is characterized in that the microprocessor second （17）It is also respectively connected with LCD MODULE（22）It is dodged with three-color LED door（4）.
- The automatic warning device 3. hospital ward according to claim 2 is infused, which is characterized in that the nurse station main control Device includes：Circuit noise filter first（23）, CAN bus driver first（24）, photoelectric isolating circuit first（25）, CAN bus control Device first processed（26）, microprocessor first（27）, display device, acousto-optic hint device；The circuit noise filter first（23）Successively Connect CAN bus driver first（24）, photoelectric isolating circuit first（25）, CAN controller first（26）With microprocessor first （27）；The display device and acousto-optic suggestion device are separately connected microprocessor first（27）.
- The automatic warning device 4. hospital ward according to claim 3 is infused, which is characterized in that the display device includes LED digital display devices（28）And decoder driver circuit（29）.
- The automatic warning device 5. hospital ward according to claim 3 is infused, which is characterized in that the acousto-optic hint device Including buzzer（30）, three-color LED lamp group（32）And its driving circuit（31）.
- The automatic warning device 6. hospital ward according to claim 3 is infused, which is characterized in that the microprocessor first （27）It is also connected with keyboard and interface circuit, RS-232 serial line interfaces.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510595059.4A CN105288785B (en) | 2015-09-17 | 2015-09-17 | A kind of hospital ward infusion automatic warning device |
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| CN201510595059.4A CN105288785B (en) | 2015-09-17 | 2015-09-17 | A kind of hospital ward infusion automatic warning device |
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| CN105288785B true CN105288785B (en) | 2018-09-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105664296A (en) * | 2016-03-12 | 2016-06-15 | 上海大学 | Display system of medical infusion device |
| CN105641780A (en) * | 2016-03-12 | 2016-06-08 | 上海大学 | Infrared infusion grading early warning system |
| CN106039472A (en) * | 2016-06-16 | 2016-10-26 | 沈娟芬 | Infusion bag alarm device |
| CN109865175A (en) * | 2019-02-26 | 2019-06-11 | 广州市妙伊莲科技有限公司 | A kind of high Medical Devices of safety coefficient for infusion |
| CN110059961A (en) * | 2019-04-19 | 2019-07-26 | 河南应用技术职业学院 | With attendance data analysis in teaching area in the period of imparting knowledge to students for the campus style of study analysis method of foundation and matched data acquisition equipment |
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| CN105288785A (en) | 2016-02-03 |
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