CN109513064A - Needle tube device - Google Patents

Needle tube device Download PDF

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Publication number
CN109513064A
CN109513064A CN201811216096.XA CN201811216096A CN109513064A CN 109513064 A CN109513064 A CN 109513064A CN 201811216096 A CN201811216096 A CN 201811216096A CN 109513064 A CN109513064 A CN 109513064A
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CN
China
Prior art keywords
needle
bottle
screw rod
fixed block
infusion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811216096.XA
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Chinese (zh)
Inventor
丁强
张秀峰
郝春洋
王伟
马天翼
关持循
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dalian Minzu University
Original Assignee
Dalian Nationalities University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dalian Nationalities University filed Critical Dalian Nationalities University
Priority to CN201811216096.XA priority Critical patent/CN109513064A/en
Publication of CN109513064A publication Critical patent/CN109513064A/en
Pending legal-status Critical Current

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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
    • A61M5/44—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 having means for cooling or heating the devices or media
    • A61M5/445—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 having means for cooling or heating the devices or media the media being heated in the reservoir, e.g. warming bloodbags
    • 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
    • A61M5/16827—Flow controllers controlling delivery of multiple fluids, e.g. sequencing, mixing or via separate flow-paths
    • 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
    • A61M5/16845—Monitoring, detecting, signalling or eliminating infusion flow anomalies by detecting the amount of infusate remaining, e.g. signalling end of infusion by weight
    • 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
    • A61M2205/3368—Temperature
    • 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
    • A61M2205/3393—Masses, volumes, levels of fluids in reservoirs, flow rates by weighing the reservoir
    • 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
    • A61M2205/36—General characteristics of the apparatus related to heating or cooling
    • A61M2205/3653—General characteristics of the apparatus related to heating or cooling by Joule effect, i.e. electric resistance

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  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

Needle tube device, belong to medical care field, it can be with closing in order to solve needle tube device, lower movement is to complete contact pin, the problem of pulling out needle, the one side of fixed block is fixedly connected with one end of cross bar, the other end of cross bar is fixedly connected with the bottom end of vertical bar, fixed block, vertical bar, cross bar is fastened in support column internal notches to fix to needle tube device, the bottom surface of the fixed block is run through, screw rod bottom end is limited in through hole, the end face of its bottom end connects rotating electric machine, screw rod rotates with rotating electric machine and is fixed block limit, the screw rod is threadedly coupled one end of lateral shank thereon, the end is nut end, effect: the needle tube device, which can match, to be closed, lower movement is to complete contact pin, pull out needle, during infusion bottle automatic medicine-change, automatic controlling and monitoring is also achieved for plug needle.

Description

Needle tube device
Technical field
The invention belongs to medical care fields, are related to a kind of needle tube device.
Background technique
The appearance of intelligent medical provides information exchange functions for people's lives, optimizes people's lives mode, together When more importantly enhance medical treatment safety, enhance more carings, humanistic nature.
Summary of the invention
It moves up and down to solve the problems, such as that needle tube device can cooperate to complete contact pin, pull out needle, to cooperate rotation real Existing automatic medicine-change.The present invention the following technical solutions are proposed: needle tube device include vertical screw rod, fixed block, rotating electric machine, cross bar, Lateral shank, vertical bar, the one side of fixed block are fixedly connected with one end of cross bar, and the other end of cross bar is fixedly connected with the bottom of vertical bar End, fixed block, vertical bar, cross bar are fastened in support column internal notches to fix to needle tube device, the bottom of the fixed block Face is run through, and screw rod bottom end is limited in through hole, and the end face of bottom end connects rotating electric machine, and screw rod turns with rotating electric machine Block limit is moved and is fixed, the screw rod is threadedly coupled one end of lateral shank thereon, which is nut end, lateral shank The other end be syringe needle clamping end, clamp syringe needle thereon, clamping end has a through hole, and vertical bar is through the through hole and horizontal It is limited to shank, screw rod rotation is driven by rotating electric machine, screw rod has vertical leaning thread thereon, due to fixed block, erects Bar, cross bar are fixed, thus screw rod rotates so that the nut extreme direction of lateral shank rotates and generates vertical displacement, so that horizontal The syringe needle clamped to shank has vertical displacement, and the motor is connect with controller, to receive starting and diversion signal.
It moves up and down the utility model has the advantages that the needle tube device can cooperate to complete contact pin, pull out needle, in infusion bottle automatic medicine-change During, automatic controlling and monitoring is also achieved for plug needle.
Detailed description of the invention
Fig. 1 is the cross-sectional view of system of the present invention；
Fig. 2 is the perspective view of system of the present invention；
Fig. 3 is the side view of Fig. 1；
Fig. 4 is subprogram screenshot of the invention；
Fig. 5 is temperature controlled programme diagram of the invention；
Fig. 6 is the structural schematic diagram of the first needle tube device of the invention；
Fig. 7 is the structural schematic diagram of second of needle tube device of the invention；
Fig. 8 is the structural schematic diagram of second of needle tube device of the invention.
Wherein: 1. electrothermal resistance silks, 2. foil gauges, 3. temperature sensors, 4. infrared emission heads, 5. infrared receiving terminals, 6. rudders Machine complete machine, 7. rotation axis, 8. chucks, 9. turntables, 10. needle tube devices, 11. turntable avris, 12. outer layers, 13. internal layers, 14. is perpendicular To screw rod, 15. fixed blocks, 16. rotating electric machines, 17. cross bars, 18. lateral shanks, 19. vertical bars, 20. steering engines, 21. fixed disks, 22. support rod, 23. shafts, 24. connecting rods, 25. lateral shanks, 26. support columns.
Specific embodiment
Embodiment 1: a kind of system of continuous automatic replacement infusion bottle, as shown in Figure 1-3, include turntable 9, hollow bilayer Bottle tool, needle tube device 10, dropping liquid surplus monitor system, controller, and the hollow double bottle has multiple, each hollow bilayer Bottle has the inner cavity for accommodating infusion bottle, by match bottleneck it is directed downwardly in a manner of be fixed and be distributed in the circumference of turntable 9, turntable 9 Center location and the rotation section of steering engine connect, the fixed part of steering engine connect with support column below, and needle tube device 10 includes Syringe needle and the vertical regulating device of syringe needle, it is installed in support column to needle tube device 10, and syringe needle is located at the lower section of a stop place, The stop place is that steering engine drives turntable 9 to rotate and the hollow double bottle being distributed on turntable 9 is made to have the position successively stopped It sets, and syringe needle is located at below the bottleneck of the hollow double bottle tool stopped；Controller controls the vertical regulating device of syringe needle more than the dropping liquid Amount monitoring system issues signal and moves down syringe needle so that syringe needle is extracted bottle outlet；Steering engine rotates and replaces the hollow double of stop place Layer bottle tool, the controller control vertical regulating device of syringe needle move up syringe needle so that syringe needle is pricked carry in the new hollow double of stop place The bottleneck of layer bottle tool.
Wherein: steering engine is the steering engine rotated for turntable 9, including steering engine complete machine 6 and rotation axis 7, and rotation axis 7 is as rotation Portion, 7 connecting chuck 8 of rotation axis of the steering engine, chuck 8 are fixedly connected with turntable 9, and steering engine complete machine 6 is fixed in support column The fluting in portion, fluting are used as fixed part.The rotation axis 7 of the specific steering engine is by screw connecting chuck 8, opening quotation and turntable 9 Between be fixedly connected with screw, steering engine complete machine 6 is fixed on support column internal notches as fixed part by screw.
Wherein, the chuck 8 is the connecting column at center with the connecting column rabbeted with turntable bottom, is hollow The rotation axis 7 of column, steering engine is embedded in the open tubular column, so that rotation axis is connect with turntable.
Wherein: hollow double bottle tool includes outer layer 12, internal layer 13, be between outer layer 12 and internal layer 13 it is hollow, internal layer 13 it is outer Circumferential surface coiling has electrothermal resistance silk 1, and it further includes temperature sensing that infusion bottle, which is inverted in the inner cavity of inner peripheral surface formation of internal layer 13, Device, to transfusion temperature acquire, may be mounted near infusion bottle mouth, temperature sensor temperature collection be lower than with Definite value or predetermined range then start the heating of electrothermal resistance silk, and temperature sensor acquires transfusion temperature in real time, when temperature collection reaches To definite value or limits, then electrothermal resistance silk is closed, acquisition and the process for controlling temperature are as shown in Figure 5.
Wherein: it includes strain acquirement circuit, A/D chip that dropping liquid surplus, which monitors system, and strain acquirement circuit connection is in the control Device processed, the foil gauge 2 of the strain acquirement circuit are attached to the inner peripheral surface of the internal layer 13 of hollow double bottle tool, infusion bottle Weight change generates stretching to the foil gauge 2 that inner peripheral surface attaches, and changes the resistance value of foil gauge 2, so that the electric current in circuit is sent out Changing, current value are acquired by A/D chip, and are transmitted to controller, and controller is with the numerical data of the electric current acquired to accrued Calculate the surplus of dropping liquid in infusion bottle.Specifically, the surplus of the dropping liquid, which is located at threshold range, then issues signal, control to controller Device processed receives the signal to issue control signal to the vertical regulating device of syringe needle, the starting vertical regulating device of syringe needle move down syringe needle with Syringe needle is extracted into bottle outlet.
Using the method for 2 monitoring transfusion surplus of foil gauge, foil gauge 2 is attached to the inner circumferential of the internal layer 13 of hollow double bottle tool Face is generated by infusion bottle and squeezes the pressure of the inner peripheral surface that lower deformation occurs generates the variation of electric current, the meter for weight of being infused Calculation process is as follows:
Full scale output voltage=driving voltage * sensitivity；
Sensitivity=1.0mv/v
Single-chip microcontroller supply voltage is 5v, i.e., driving voltage is 5v
Full scale output voltage 5mv is equivalent to 5Kg gravity and generates the voltage of 5mV；
Used A/D chip is HX711 module, and HX711 modules A channel has 128 times of signal gains, by the electricity of 5mV The value 128 times big, then sampling output 24bitAD is converted is pressed, single-chip microcontroller is read 24bit data by specified timing
Out；HX711 module generates VAVDD and AGND voltage, i.e. E+ and E- voltage in HX711 module；
VAVDD=VBG (R1+R2)/R2
VBG is module youngster reference voltage 1.25v
R1=20K
R2=8.2K
VAVDD=4.3V
It is gravity value by AD value reverse conversion, it is assumed that in infusion bottle and its gravity of interior dropping liquid is xKg, x < 5Kg, measurement AD value out is y, is exported for sensor, and the voltage for being sent to A/D chip is
XKg*4.3mV/5Kg=0.86xmV
It is after 128 times of gains
128*0.86x=110.08xmV
Being converted to 24bit digital signal is
110.08xmV*224/ 4.3V=429496.7296x
So
Y=429496.7296x
?
X=y/429496.7296
It is calculated in infusion bottle with this and its gravity of interior dropping liquid, the gravity subtracts the gravity of infusion bottle and is dropping liquid Gravity.
In a program by the weight write-in EEPROM of peeling, the weight of the peeling is the gravity of infusion bottle, is made Without executing peeling operation repeatedly during infusion test.Above-mentioned dropping liquid surplus monitors system and method, realizes for drop The monitoring of liquid surplus, and, the acquisition of this kind of monitoring method, mainly hardware and software are calculated and are realized, are made it possible to achieve automatic Dropping liquid surplus is monitored, and is reached in threshold range in dropping liquid surplus, issues enabling signal to controller, needle and turntable are pulled out in starting Rotation, to realize automatic medicine-change.
Wherein: the system of continuous automatic replacement infusion bottle, further includes positioning device comprising infrared emission head 4, infrared Head 5 is received, infrared emission head 4 is mounted on the bottleneck of each hollow double bottle tool, and infrared receiving terminal 5 is mounted near syringe needle, red Outer reception head 5 connects controller, and turntable 9 rotates and drives hollow double bottle tool rotation, the infrared receiving terminal near syringe needle 5 receive the transmitting signal of infrared emission head 4, output signal to controller, and controller issues control signal to steering engine, by Steering engine stops the rotation of its rotation section, and starts needle tube device 10 to insert the needle into the bottleneck of the infusion bottle of current location.So that The hollow double bottle tool of stop place can be realized automatic, accurate, continuous stop, avoid syringe needle and bottleneck as far as possible Position have a gap and can not prick into the phenomenon that, and not will lead to automatic rotate and what is generated stops problem every medicine.
In the above scheme, the first needle tube device 10 is provided, such as Fig. 6, including vertical screw rod 14, fixed block 15, rotation Motor 16, cross bar 17, lateral shank, vertical bar 19, the one side of fixed block 15 are fixedly connected with one end of cross bar 17, cross bar 17 The other end is fixedly connected with the bottom end of vertical bar 19, fixed block 15, vertical bar 19, cross bar 17 be fastened in support column internal notches with Fixed to needle tube device 10, the bottom surface of the fixed block 15 is run through, and screw rod bottom end is limited in through hole, bottom end End face connect rotating electric machine 16, screw rod rotates with rotating electric machine 16 and is fixed block 15 and limits, screw rod screw thread thereon One end of lateral shank is connected, which is nut end, and the other end of lateral shank is syringe needle clamping end, clamps syringe needle thereon, is pressed from both sides Holding end has through hole, and vertical bar 19 is limited through the through hole and by lateral shank, drives screw rod rotation by rotating electric machine 16 Turn, screw rod has vertical leaning thread thereon, and since fixed block 15, vertical bar 19, cross bar 17 are fixed, thus screw rod rotates So that the nut extreme direction of lateral shank rotates and generates vertical displacement, so that the syringe needle that lateral needle rod holder is held has vertical position It moves, the motor is connect with controller, to receive starting and diversion signal.
In the above scheme, second of needle tube device 10 is provided, such as Fig. 7, including steering engine, fixed disk 21, support rod 22, Shaft 23, connecting rod 24, lateral shank 25, fixed disk 21 are mounted on the rotation axis end of steering engine, and rotation axis is in horizontal direction, 21 one side of fixed disk is fixedly connected with one end of support rod 22, and the end of the other end of support rod 22 forms bearing head, connecting rod One end formed shaft, be rotatably connected with the bearing head of support rod 22 in vertical plane, vertical plane be rotatably connected so that Connecting rod 24 is to can be rotated, another end of connecting rod 24 is connect with the one end of transverse direction shank, lateral shank vertically The other end is syringe needle clamping end, clamps syringe needle thereon.Above structure so that fixed disk with steering engine shaft clockwise or the inverse time Needle rotation, so that support rod is provided with vertical displacement, which passes to connecting rod and lateral shank, and shape with shaft At the vertical displacement of lateral shank, syringe needle is moved up and down, form contact pin and pull out needle, the steering engine and controller connect It connects, to receive starting and diversion signal.
In the above scheme, the third needle tube device 10 is provided, such as Fig. 8, including steering engine, fixed disk 21, support rod 22, Shaft 23, connecting rod 24, lateral shank 25, fixed disk 21 are fastened on 22 1 side end face of support rod, and the rotation axis 7 of steering engine includes Vertical rotation axis 7 and with its vertical rotation axis 7 cross bar 17 connected vertically, end and the fixed disk 21 of cross bar 17 be fastenedly connected, And the end of cross bar 17 and a side end face for support rod 22 are in the same direction, so that the end face of vertical rotation axis 7 and support rod 22 Vertically, inclined between the support rod 22 and connecting rod 24 with the connection of shaft 23, the connecting rod 24 and one end of lateral shank It is tiltedly fixedly connected, the other end of lateral shank is syringe needle clamping end, clamps syringe needle thereon.The steering engine axis rotation, by vertical Rotation axis 7 drives cross bar 17 to rotate, and the support rod 22 formed in plane rotates clockwise or counterclockwise, so that connecting rod 24 It is servo-actuated and rotates clockwise or counterclockwise with lateral shank, and syringe needle clamping end moves up or moves down, the steering engine and controller connect It connects, to receive starting and diversion signal.
Above-mentioned needle tube device 10 has the fluting for allowing lateral shank etc. mobile in the support column.
For system mentioned above, the method that the infusion bottle of a variety of flow of infusate rotated and pulled out automatically needle has following Two modes:
Initial mode: under original state, single-chip microcontroller issues instruction, control steering engine rotation, so that medicine bottle turns to stop place It sets, stop place is to be received and true by the photoelectric tube of bottle mouth position and the photoelectric tube of syringe needle with photosignal transmitting Fixed, medicine bottle be in stop place and issues contact pin signal to needle tube device 10 by single-chip microcontroller, and needle tube device 10 starts and by syringe needle Prick the bottleneck into current medicine bottle；Needle, dressing mode are pulled out into infusion monitoring；
Infusion monitoring pulls out needle, dressing mode, in real time according to the surplus of dropping liquid in medicine bottle, it is determined whether dressing is carried out, it is first So that pressure-strain piece 2 is acquired the quality signal of dropping liquid in medicine bottle before this, was then converted into as electric signal transmission to single-chip microcontroller to drop The Mass Calculation of liquid, judges whether the quality of dropping liquid falls within a threshold range, to judge whether to pull out needle, dressing operation, when sentencing The quality of disconnected dropping liquid is fallen within a threshold range, and control needle tube device 10 starts and syringe needle is extracted to the bottleneck of current medicine bottle, monolithic Machine issues instruction, and control steering engine rotation, so that next medicine bottle turns to stop place, stop place is the light by bottle mouth position Photoelectric tube at fulgurite and syringe needle is received and is determined with photosignal transmitting.
It in above-mentioned implementation procedure, is compared by the temperature collection of set temperature and medicine bottle, when temperature collection is lower than Set temperature judges to heat, and temperature collection is detected and acquired by temperature sensor 3, and the temperature collection in medicine bottle is when lower than setting When temperature, by electric signal transmission to single-chip microcontroller, by single-chip microcontroller control relay closure, so that the electrothermal resistance silk 1 in circuit adds Heat disconnects relay when temperature collection is higher than setting value by 3 real-time monitoring temperature collection of temperature sensor.According to being strained The temperature collection of the dropping liquid of the data and medicine bottle of the dropping liquid surplus of the medicine bottle of the infusion collected of piece 2 is transferred to single-chip microcontroller, monolithic Machine transfers data to host computer and shows, nurse shows the transfusion condition for observing patient by host computer.
In another embodiment, it is related to a kind of infusion dressing change method, is that system boot powers on first, the first step judges defeated Whether liquid medicine bottle is put into infusion device, is acquired data by foil gauge 2 and is judged, if infusion bottle is not placed on infusion In device, system is not run, if infusion bottle is placed in infusion device, priority is: first detecting the temperature of infusion bottle And judge whether to heat, secondly by the function of setting to the bottle duplicate removal of infusion bottle, the weight of dropping liquid is calculated, is then opened Dynamic medicine bottle needle tube device 10 judges that the position of insertion starts needle tubing when current medicine bottle infusion is completed by photoelectric tube Device 10 finally rotates turntable 9 to complete to pull out needle, and the secondary position medicine bottle of current medicine bottle is rotated to stop place, starts needle tubing dress 10 are set to complete contact pin.During the above method executes, by temperature, weight, contact pin, the data transmission of needle is pulled out to host computer.
Embodiment 2:
The present invention is the innovation and creation that numerous teachers and students of Dalian ethnic university and University Of Dalian both participate in, for different skills Art theme engineering participation, the system being related to is by pressure-strain piece to liquid detecting in infusion bottle, and detecting a bottle is The net medical fluid of no stream to monitor liquid residue in infusion bottle with quality (corresponding gravity, weight), to choose whether to change Bottle will terminate to be infused.Realize the intelligence of infusion control.
In the case where patient's unsupervised and nurse is in case of emergency too busy to do it to patient monitoring, leads It causes many people all very irritable when changing infusion bottle and pulling out needle, all causes certain loss to hospital and patient in this way.
This works set up theory be to aid in nurse helped when busy its guard patient.Works by transfusion heater, Automatic medicine-change bottle system, the pre-completed alarm system three parts composition of infusion.
(1) heating system:
Heating device based on four temperature sensor, electrothermal resistance silk, relay, rotary switch elements by constituting.
By temperature detection sensor DS18B20 to the temperature real-time detection put in bottle device, in the device for putting medicine Using two-layer equation, it is greatly reduced the heat losses of device in this way, more the saving energy, and rotary switch can be passed through Setting to heating temperature.When temperature is below or above setting value, relay on or off achievees the purpose that keep constant temperature.
(2) automatic medicine-change system:
Automatic dressing changing device is made of pressure-strain piece, steering engine, infrared tube and automatic needle withdrawing device.
The pressure so as to side wall is reduced with liquid to the pressure value of side wall in the device of storage medicine using medicine bottle For value than routine variation, needle device is pulled out after medical fluid is finished first prevents liquid from flowing for perfusion tube is stuck, causes air to enter defeated In liquid pipe.Needle is pulled out in the starting of steering engine 1, then starts steering engine 2 and tray is allowed to rotate, when photoelectric tube detects signal, steering engine 1 is opened Dynamic contact pin, to complete entire dressing process.
(3) the pre-completed alarm system of infusion:
Pre-completed alarm system of being infused mainly carries out the transmission of infusion real-time condition and alarm by LabVIEW.
For assistant small for nurse, it will not only have security function, more have the function of to facilitate intelligent use.Root Dressing is controlled whether according to pressure-strain piece；Temperature is detected according to temperature sensor, to decide whether heating transfusion bottle.Such as Just side is needed to heat in winter, the compatible automatic mode of our design and control model, so that our design more human nature Change, is intelligent, so that our design has more practicability and novelty.In addition, the small assistant of nurse also has characteristics that
Compatibility: the small assistant of nurse has manual, intelligent control, pressure and temperature control.Control mode is followed one's bent, when When liquid is finished, driver can stop working in time, in order to avoid into air.When powering off, the mesh of control infusion still can reach 's.
Applicability: the intelligent selection of multiple types can satisfy the particular demands of different crowd.
Intelligent: the design is based on Intelligent Single-Chip Based control and LabVIEW communication equipment, realizes in transfusion room anyly Side can be transferred through communication and carry out control and last nurse call to infusion garter.
The feature of environmental protection: the works low-carbon environment-friendly can be used for multiple times, reduce the work of nurse, come without allowing them to hurry back and forth Come on the road of Huis dressing.
Technology of Internet of things will be widely used in surgical device, intensive care unit, hospital recuperate in residential care, intelligence Medical combining wireless network technology, bar code RFID, technology of Internet of things, mobile calculation technique, Data fusion technique etc., will be further The efficiency of service and service quality of medical diagnosis and treat process are promoted, comprehensive hospital management level is promoted, realizes that control is wireless Change, change comprehensively and solves the problems, such as to modernize digital medical mode, intelligent medical and health control, hospital information system etc. And difficulty, and significantly mention and embody medical resource shared resources, reduce public's medical treatment cost.Pass through electron medical treatment and RFID object Networking technology can make the work of a large amount of medical monitoring implement wireless penetration, and tele-medicine and self-medicine, information are adopted in time Collection and shared resources, can be relieved the awkward situation of shortage of resources, resource allocation unevenness, reduce the medical treatment cost of the public.
Technology of Internet of things is used for medical field, by digitlization, visualization formulation, limited medical resource can be made to allow more People is shared.From the point of view of the development of current medical information, as the development trend of health care community, health care is increasingly bright It is aobvious, real-time tracking and the monitoring of sign information are carried out in the family by related terminal devices such as radio frequency instruments, by effective Hospital may be implemented to the patient either real-time diagnosis of inferior health patient and healthalert, to efficiently reduce in Internet of Things With the generation and development of control sufferer.In addition, technology of Internet of things will also be played in the application process of drug control and medication link Great function.
With the development of mobile internet, the following medical treatment develops to personalized, mobile direction, by 2015 more than 50% Mobile phone user use portable medical application, if intelligent capsule, Intelligent wrister, intelligent health testing product will be widely applied, By intelligent hand-held terminal and sensor, effectively measuring and transmission health data.
The coming years, Chinese intelligent medical market scale will be more than 10,000,000,000 yuan, and the periphery industry scope being related to is very Extensively, equipment and product category are various.The real starting in this market, influence will be not limited only to industry of medical care itself, It will also directly touch the interests chain including Network Provider, system integrator, wireless device vendors, telecom operators Item, to influence the existing layout of communications industry.
The present embodiment has prospect in application market very much.Because this is the fresh invention of a fresh industry.It is very scarce in the market Weary this product, our this invention can thoroughly change the medical prospect of this industry.Infusion can become safe and reliable, and It is not that people those of put off until some time later dangerous thing and occur.Pervious infusion is one-to-many nursing, and this will become one-to-one shield Reason, more intimate, intelligence.
The monitoring of 1 medical fluid is introduced
The common infusion model to patient of hospital is all the infusion performance kept an eye on by nurse to patient, when medicine bottle In medical fluid when being finished, when finding that the infusion bottle of patient is finished by patient calling nurse or nurse, timely dressing bottle.It is lacked Point is first is that patient nurse when being infused rest can not damage patient timely to changing medicine for patient；Disadvantage two patient compared with Nurse could not have found the transfusion condition of some patient in time in the case where more, and caused by injure.Therefore our scheme be by The disadvantage that front is two combines, more convenient to keeping an eye on for this nurse, efficient.
The dressing mode introduction of 1.1 monitoring infusions
The mode of dressing change of infusion monitoring, this is a kind of real-time system, at any time according in medicine bottle medical fluid number, change come it is true It is fixed whether carry out dressing, it is the quality for making pressure-strain piece receive medicine bottle medical fluid first, is then converted into and is passed for electric signal It is defeated by single-chip microcontroller, is judged whether to pull out needle, dressing by single-chip microcontroller, then issues instruction, control steering engine operation, it is suitable to turn to Position (position is that have photoelectric tube at the photoelectric tube and medicine needle of bottle mouth position to determine).
1.2 monitoring infusion pulls out needle mould formula introduction
Monitoring infusion pulls out needle mode, first when the medical fluid for meeting some independent medicine bottle is finished, according to independent medicine The dose of bottle determines whether to pull out needle.The condition of dressing mode is met first, can just be entered and be pulled out needle mould formula, have on foil gauge Control the operation of steering engine to the electric signal of single-chip microcontroller, steering engine and needle are enough at a tracker action, and completion pulls out needle and to medicine bottle In be inserted into transfusion needle, when to infusion bottle contact pin, there is the electric signal of photoelectric tube to determine position.
Warning device introduction used by 1.3 systems
The data and medicine bottle temperature completed according to the infusion collected of institute's foil gauge are transferred to single-chip microcontroller processing, will count It is gone according to host computer is transferred to, nurse can be by observing the transfusion condition of patient on host computer.
1.4 system temperature control introductions
The temperature regulating device of system is to be compared by the temperature of setting and the temperature of medicine bottle, judges whether to heat.System Unlatching is powered on through the temperature in temperature sensor (DS18B20) detection medicine bottle when lower than setting range, and electric signal is transmitted To single-chip microcontroller, by single-chip microcontroller control relay closure electrothermal resistance silk heating, by temperature sensor real-time detection temperature when temperature is high Relay disconnects when setting value.
The General layout Plan of 2 monitoring infusions
It determines workflow progress first: being that system boot powers on first, the first step judges whether infusion bottle is put into In infusion device, if do not placed in infusion device, system is not just run.If infusion bottle is placed in infusion device, Priority is that the temperature of detection infusion bottle judges whether to heat, and is followed by gone by the function set to the bottle of infusion bottle Weight, calculates the weight of medical fluid.Then starting medicine bottle pulls out/contact pin apparatus, and the position of insertion is judged by photoelectric tube.When When the infusion of independent medicine bottle is completed, needle device is pulled out in starting, and completion, which is pulled out, to be followed by dressing bottle after needle and transfer data to again Position machine.
2.1 monitoring infusion illustratons of model
Refer to attached drawing 1-2.
2.2 automatic dressing changing device model schemes
Automatic dressing changing device is made of pressure-strain piece, steering engine, infrared tube and automatic needle withdrawing device.Existed using medicine bottle It stores in the device of medicine and the foil gauge of side wall is stretched to resistance value is changed, so that electric current changes by handling A/D chip HX711 resume module transfers data to single-chip microcontroller, by single-chip microcontroller function processing calculate medical fluid number, with Liquid reduction so as to the pressure value of side wall than routine variation, needle device is pulled out after medical fluid is finished will first be infused pipe clamp It extremely prevents liquid from flowing, air is caused to enter in perfusion tube.Needle is pulled out in steering engine starting, then starts steering engine and rotates by tray, works as light When electricity detects signal to pipe, steering engine starts contact pin, to complete entire dressing process.
Know the variation of the foil gauge electric current that deformation occurs under the extruding for receiving external force generates.The calculating process for weight of being infused It is as follows:
Full scale output voltage=driving voltage * sensitivity 1.0mv/v；
Single-chip microcontroller supply voltage is 5v multiplied by sensitivity 1.0mv/v=full scale 5mv；
It is equivalent to the voltage that 5mV is generated when 5Kg gravity generates；
Used A/D chip HX711, HX711 modules A channel have 128 times of signal gains, can be by the voltage of 5mV 128 times of amplification, then the value of sampling output 24bitAD conversion, single-chip microcontroller are read 24bit data by specified timing.
HX711 can generate VAVDD and AGND voltage, i.e. E+ and E- voltage in HX711 module.The voltage passes through
VAVDD=VBG (R1+R2)/R2
VBG is module youngster reference voltage 1.25v
R1=20K, R2=8.2K
Therefore it obtains
VAVDD=4.3V
(in order to reduce power consumption, which only just has output in sampling instant, therefore is likely lower than with the value that multimeter is read 4.3v, because multimeter measurement is virtual value.) by ADADAD value reverse conversion be gravity value.Assuming that gravity is x Kg, (x < 5Kg), for the output of y sensor, the voltage for being sent to A/D module youngster is the AD value measured
X Kg*4.3mV/5Kg=0.86x mV
It is after 128 times of gains
128*0.86x=110.08xmV
Being converted to 24bit digital signal is
110.08x mV*224/ 4.3V=429496.7296x
So
Y=429496.7296x
Therefore it obtains
X=y/429496.7296
So obtaining calculation formula in program
Weight_Shiwu=(unsigned long) ((float) Weight_Shiwu/429.5)；
Subprogram screenshot refers to Fig. 4.
It completes and quality in kind is acquired, be followed by peeling in kind, allow data show is exactly that we think Obtained actual weight in kind.In a program by the weight write-in EEPROM of peeling, make nothing during medical fluid detects Peeling operation need to be executed repeatedly.
System pulls out from trend medicine bottle/and contact pin is made of devices such as steering engine and springs.Wherein steering engine control needle extraction or Insertion is arranged in a program when medicine bottle quality is 0, after the electric signal of generation turns 90 ° by steering engine, the rudder of controlled loading of explosive device Machine turns 90 °, then steering engine is being allowed to restore.
2.3 temperature control detection schemes
The case where when temperature control scheme is lower for fluid temperature, inputs into can cause patient not in the blood vessel of patient It is suitable, fluid temperature control is inputted into human body sensory more comfortably in suitable temperature.Infusion bottle is detected by temperature sensor Temperature control heater switch.
Embodiment 3:
For needing to sequentially input more bottle liquid medicines, will lead to and needed to medical fluid pair in infusion process in primary infusion Surplus gives more concern, furthermore, it is desirable to which special medical staff is finished at one bottle and replaces to infusion bottle, artificially The cost of nurse and service is more obvious.
To solve the above-mentioned problems, the following technical solutions are proposed by the present invention: a kind of continuous automatic replacement infusion bottle is System, including turntable, hollow double bottle tool, needle tube device, dropping liquid surplus monitor system, controller, the hollow double bottle tool Have multiple, each hollow double bottle has the inner cavity for accommodating infusion bottle, by match bottleneck it is directed downwardly in a manner of be fixed and be distributed in The circumference of turntable, the center location of turntable and the rotation section of steering engine connect, and the fixed part of steering engine connects with support column below It connects, needle tube device includes syringe needle and the vertical regulating device of syringe needle, it is installed in support column to needle tube device, and syringe needle is located at one and stops The lower section of position is stayed, which is that steering engine drives turntable to rotate and to be distributed in the tool of the hollow double bottle on turntable The position successively stopped, and syringe needle is located at below the bottleneck of the hollow double bottle tool stopped；Controller control syringe needle is adjusted vertically Dropping liquid surplus monitoring system is installed on to issue signal and move down syringe needle so that syringe needle is extracted bottle outlet；Steering engine rotates and replaces and stop The hollow double bottle of position is stayed to have, the controller control vertical regulating device of syringe needle moves up syringe needle so that syringe needle is pricked carry in stop The bottleneck of the new hollow double bottle tool of position.
Further, steering engine includes steering engine complete machine and rotation axis, and rotation axis is as rotation section, the rotation axis of the steering engine Connecting chuck, chuck are fixedly connected with turntable, and steering engine complete machine is fixed on support column internal notches as fixed part.
Further, the rotation axis of the steering engine is fixedly connected by screw connecting chuck, opening quotation between turntable with screw, Steering engine complete machine is fixed on support column internal notches as fixed part by screw.
Further, hollow double bottle tool includes outer layer, internal layer, and outer layer is hollow, the periphery face of internal layer with interior interlayer It is wound with electrothermal resistance silk, infusion bottle is inverted in the inner cavity of inner peripheral surface formation of internal layer.
Further, dropping liquid surplus monitoring system includes strain acquirement circuit, A/D chip, and strain acquirement circuit connects It is connected to the controller, the foil gauge of the strain acquirement circuit is attached to the inner peripheral surface of the internal layer of hollow double bottle tool, defeated Liquid medicine bottle weight change generates stretching to the foil gauge that inner peripheral surface attaches, and changes the resistance value of foil gauge, so that the electricity in circuit Stream changes, and current value is acquired by A/D chip, and is transmitted to controller, and controller is with the numerical data pair of the electric current acquired The surplus of dropping liquid in infusion bottle should be calculated.
Further, the surplus of the dropping liquid is located at threshold range then to controller sending signal, and controller receives should For signal to issue control signal to the vertical regulating device of syringe needle, the starting vertical regulating device of syringe needle moves down syringe needle to take out syringe needle Take out bottleneck.
Further, the system of the continuous automatic replacement infusion bottle, further includes positioning device comprising infrared hair Head, infrared receiving terminal are penetrated, infrared emission head is mounted on the bottleneck of each hollow double bottle tool, and infrared receiving terminal is mounted on syringe needle Near, infrared receiving terminal connects controller, and turntable rotates and drives hollow double bottle tool rotation, infrared near syringe needle The transmitting signal that head receives infrared emission head is received, controller is outputed signal to, controller issues control signal to rudder Machine stops the rotation of its rotation section by steering engine, and starts needle tube device to insert the needle into the bottleneck of the infusion bottle of current location.
Further, needle tube device includes vertical screw rod, fixed block, rotating electric machine, cross bar, lateral shank, vertical bar, is fixed The one side of block is fixedly connected with one end of cross bar, and the other end of cross bar is fixedly connected with the bottom end of vertical bar, fixed block, vertical bar, cross bar It is fastened in support column internal notches to be fixed to needle tube device, the bottom surface of the fixed block is run through, screw rod bottom end quilt In through hole, the end face of bottom end connects rotating electric machine for limit, and screw rod rotates with rotating electric machine and is fixed block limit, institute The screw rod stated is threadedly coupled one end of lateral shank thereon, which is nut end, and the other end of lateral shank is syringe needle clamping End clamps syringe needle thereon, and clamping end has through hole, and vertical bar is limited through the through hole and by lateral shank, by electric rotating Machine drives screw rod rotation, and screw rod has vertical leaning thread thereon, since fixed block, vertical bar, cross bar are fixed, thus spiral shell Bar rotates so that the nut extreme direction of lateral shank rotates and generates vertical displacement, so that the syringe needle that lateral needle rod holder is held has Vertical displacement, the motor are connect with controller, to receive starting and diversion signal.
Further, needle tube device includes steering engine, fixed disk, support rod, shaft, connecting rod, lateral shank, and fixed disk is tight Gu in one side end face of support rod, the rotation axis of steering engine include vertical rotation axis and with its vertical rotation axis cross bar connected vertically, The end of cross bar is fastenedly connected with fixed disk, and the end of cross bar and a side end face for support rod are in the same direction, so that vertically Rotation axis is vertical with the end face of support rod, is connected between the support rod and connecting rod with shaft, the connecting rod and transverse direction One end inclination of shank is fixedly connected, and the other end of lateral shank is syringe needle clamping end, clamps syringe needle thereon.The steering engine Axis rotation has vertical rotation axis to drive cross bar rotation, and the support rod formed in plane rotates clockwise or counterclockwise, so that Connecting rod is servo-actuated with lateral shank and rotates clockwise or counterclockwise, and syringe needle clamping end moves up or moves down, the steering engine and control Device connection processed, to receive starting and diversion signal.
For needing to sequentially input more bottle liquid medicines, will lead to and needed to medical fluid pair in infusion process in primary infusion Surplus gives more concern, furthermore, it is desirable to which special medical staff is finished at one bottle and replaces to infusion bottle, artificially The cost of nurse and service is more obvious.
To solve the above-mentioned problems, the following technical solutions are proposed by the present invention: the infusion bottle of one kind of multiple flow of infusate is automatic The method for rotating and pulling out needle, which is characterized in that there is following two mode:
Initial mode: under original state, single-chip microcontroller issues instruction, control steering engine rotation, so that medicine bottle turns to stop place It sets, stop place is to be received and true by the photoelectric tube of bottle mouth position and the photoelectric tube of syringe needle with photosignal transmitting Fixed, medicine bottle be in stop place and issues contact pin signal to needle tube device by single-chip microcontroller, needle tube device start and by syringe needle prick into The bottleneck of current medicine bottle；Needle, dressing mode are pulled out into infusion monitoring；
Infusion monitoring pulls out needle, dressing mode, in real time according to the surplus of dropping liquid in medicine bottle, it is determined whether dressing is carried out, it is first So that pressure-strain piece is acquired the quality signal of dropping liquid in medicine bottle before this, was then converted into as electric signal transmission to single-chip microcontroller to drop The Mass Calculation of liquid, judges whether the quality of dropping liquid falls within a threshold range, to judge whether to pull out needle, dressing operation, when sentencing The quality of disconnected dropping liquid is fallen within a threshold range, and control needle tube device starts and syringe needle is extracted to the bottleneck of current medicine bottle, single-chip microcontroller Instruction is issued, control steering engine rotation, so that next medicine bottle turns to stop place, stop place is the photoelectricity by bottle mouth position Photoelectric tube at pipe and syringe needle is received and is determined with photosignal transmitting.
Further, compared by the temperature collection of set temperature and medicine bottle, when temperature collection be lower than set temperature, sentence Disconnected heating, temperature collection are detected and are acquired by temperature sensor, and the temperature collection in medicine bottle, will be electric when being lower than set temperature Signal is transferred to single-chip microcontroller, by single-chip microcontroller control relay closure, so that the electrothermal resistance silk in circuit heats, by temperature sensing Device real-time monitoring temperature collection disconnects relay when temperature collection is higher than setting value.
Further, according to the dropping liquid of the data of the dropping liquid surplus of the medicine bottle of institute's foil gauge infusion collected and medicine bottle Temperature collection is transferred to single-chip microcontroller, and single-chip microcontroller transfers data to host computer and shows, nurse is shown by host computer and observed The transfusion condition of patient.
For needing to sequentially input more bottle liquid medicines, will lead to and needed to medical fluid pair in infusion process in primary infusion Surplus gives more concern, furthermore, it is desirable to which special medical staff is finished at one bottle and replaces to infusion bottle, artificially The cost of nurse and service is more obvious.
To solve the above-mentioned problems, the following technical solutions are proposed: a kind of infusion dressing change method by the present invention, is that system is opened first Machine powers on, and the first step judges whether infusion bottle is put into infusion device, is acquired data by foil gauge and is judged, if defeated Liquid medicine bottle is not placed in infusion device, and system is not run, if infusion bottle is placed in infusion device, priority is: It first detects the temperature of infusion bottle and judges whether to heat, secondly by the function of setting to the bottle duplicate removal of infusion bottle, calculate Then the weight of dropping liquid starts medicine bottle needle tube device, the position of insertion, current medicine bottle infusion are judged by photoelectric tube When completion, starts needle tube device to complete to pull out needle, finally rotate turntable, the secondary position medicine bottle of current medicine bottle is rotated to stop place It sets, starts needle tube device to complete contact pin.
Further, during the above method executes, by temperature, weight, contact pin, the data transmission of needle is pulled out to host computer.
In order to solve the problem of that the following technical solutions are proposed by the present invention to the monitoring of infusion surplus can start dressing: drop Liquid surplus monitors system, including strain acquirement circuit, A/D chip, and in the controller, described answers strain acquirement circuit connection The foil gauge for becoming Acquisition Circuit is attached to the inner peripheral surface for the internal layer that hollow double bottle has, and infusion bottle weight change is to inner peripheral surface The foil gauge of attaching generates stretching, changes the resistance value of foil gauge, so that the electric current in circuit changes, current value is by AD Chip acquisition, and it is transmitted to controller, controller calculates in infusion bottle more than dropping liquid so that the numerical data of the electric current acquired is corresponding Amount.
Further, the surplus of dropping liquid be located at threshold range then to controller issue signal, controller receive the signal with Control signal is issued to the vertical regulating device of syringe needle, the starting vertical regulating device of syringe needle moves down syringe needle so that syringe needle is extracted bottle outlet Mouthful.
In order to solve to replace the orientation problem of infusion bottle automatically, the following technical solutions are proposed by the present invention: continuous automatic replacement Infusion bottle positioning device comprising infrared emission head, infrared receiving terminal, infrared emission head are mounted on each hollow double bottle tool Bottleneck, infrared receiving terminal is mounted near syringe needle, and infrared receiving terminal connects controller, and turntable is rotated and driven hollow double Layer bottle tool rotation, the infrared receiving terminal near syringe needle receive the transmitting signal of infrared emission head, output signal to control Device processed, controller issue control signal to steering engine, stop the rotation of its rotation section by steering engine, and start needle tube device with by syringe needle It is inserted into the bottleneck of the infusion bottle of current location.
It moves up and down to solve the problems, such as that needle tube device can cooperate to complete contact pin, pull out needle, to cooperate rotation real Existing automatic medicine-change.The present invention the following technical solutions are proposed: needle tube device include vertical screw rod, fixed block, rotating electric machine, cross bar, Lateral shank, vertical bar, the one side of fixed block are fixedly connected with one end of cross bar, and the other end of cross bar is fixedly connected with the bottom of vertical bar End, fixed block, vertical bar, cross bar are fastened in support column internal notches to fix to needle tube device, the bottom of the fixed block Face is run through, and screw rod bottom end is limited in through hole, and the end face of bottom end connects rotating electric machine, and screw rod turns with rotating electric machine Block limit is moved and is fixed, the screw rod is threadedly coupled one end of lateral shank thereon, which is nut end, lateral shank The other end be syringe needle clamping end, clamp syringe needle thereon, clamping end has a through hole, and vertical bar is through the through hole and horizontal It is limited to shank, screw rod rotation is driven by rotating electric machine, screw rod has vertical leaning thread thereon, due to fixed block, erects Bar, cross bar are fixed, thus screw rod rotates so that the nut extreme direction of lateral shank rotates and generates vertical displacement, so that horizontal The syringe needle clamped to shank has vertical displacement, and the motor is connect with controller, to receive starting and diversion signal.
In order to solve the problem of that the following technical solutions are proposed by the present invention: one to the monitoring of infusion surplus can start dressing The method that kind uses foil gauge monitoring transfusion surplus, foil gauge is attached to the inner peripheral surface of the internal layer of hollow double bottle tool, by being infused Bottle generate the pressure of the inner peripheral surface is squeezed it is lower deformation occurs generates the variation of electric current, the calculating process for weight of being infused is such as Under:
Full scale output voltage=driving voltage * sensitivity；
Sensitivity=1.0mv/v
Single-chip microcontroller supply voltage is 5v, i.e., driving voltage is 5v
Full scale output voltage 5mv is equivalent to 5Kg gravity and generates the voltage of 5mV；
Used A/D chip is HX711 module, and HX711 modules A channel has 128 times of signal gains, by the electricity of 5mV The value 128 times big, then sampling output 24bitAD is converted is pressed, single-chip microcontroller is read 24bit data by specified timing
Out；HX711 module generates VAVDD and AGND voltage, i.e. E+ and E- voltage in HX711 module；
VAVDD=VBG (R1+R2)/R2
VBG is module youngster reference voltage 1.25v
R1=20K
R2=8.2K
VAVDD=4.3V
It is gravity value by AD value reverse conversion, it is assumed that in infusion bottle and its gravity of interior dropping liquid is xKg, x < 5Kg, measurement AD value out is y, is exported for sensor, and the voltage for being sent to A/D chip is
XKg*4.3mV/5Kg=0.86xmV
It is after 128 times of gains
128*0.86x=110.08xmV
Being converted to 24bit digital signal is
110.08xmV*224/ 4.3V=429496.7296x
So
Y=429496.7296x
?
X=y/429496.7296
It is calculated in infusion bottle with this and its gravity of interior dropping liquid, the gravity subtracts the gravity of infusion bottle and is dropping liquid Gravity.
Further, in a program by the weight write-in EEPROM of peeling, the weight of the peeling is infusion bottle Gravity makes during infusion test without executing peeling operation repeatedly.
The utility model has the advantages that it is defeated to be especially inconvenient to large hospital in remote mountain areas in order to cope with the uneven medical level of Chinese pennisetum green bristlegrass The people of liquid come using.Can also be applied and patient fewer in number in nurse it is more when facilitate patient that can manage independently oneself Transfusion condition.Also the disabled person for being inconvenient to go out is facilitated to come using can ensure patient's correct dressing in sequence in use Infusion, and do not have to give excessive concern.It is changed to " one-to-one " intelligent nursing from the infusion mode of " one-to-many ", it can be according to every Personal situation makes automatic reply.
The preferable specific embodiment of the above, only the invention, but the protection scope of the invention is not It is confined to this, anyone skilled in the art is in the technical scope that the invention discloses, according to the present invention The technical solution of creation and its inventive concept are subject to equivalent substitution or change, should all cover the protection scope in the invention Within.

Claims (1)

1. a kind of needle tube device, which is characterized in that including vertical screw rod (14), fixed block (15), rotating electric machine (16), cross bar (17), lateral shank, vertical bar (19), the one side of fixed block (15) are fixedly connected with one end of cross bar (17), cross bar (17) it is another One end is fixedly connected with the bottom end of vertical bar (19), and fixed block (15), vertical bar (19), cross bar (17) are fastened to support column internal notches In with fixed to needle tube device (10), the bottom surface of the fixed block (15) is run through, and screw rod bottom end is limited in through hole, The end face of its bottom end connects rotating electric machine (16), and screw rod rotates with rotating electric machine (16) and is fixed block (15) and limits, described Screw rod is threadedly coupled one end of lateral shank thereon, which is nut end, and the other end of lateral shank is syringe needle clamping end, thereon Syringe needle is clamped, clamping end has through hole, and vertical bar (19) is limited through the through hole and by lateral shank, by rotating electric machine (16) screw rod rotation is driven, screw rod has vertical leaning thread thereon, due to fixed block (15), vertical bar (19), cross bar (17) It is fixed, thus screw rod rotates so that the nut extreme direction of lateral shank rotates and generates vertical displacement, so that lateral needle rod holder The syringe needle held has vertical displacement, and the motor is connect with controller, to receive starting and diversion signal.
CN201811216096.XA 2018-10-18 2018-10-18 Needle tube device Pending CN109513064A (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012131674A2 (en) * 2011-03-30 2012-10-04 Flow Med Ltd A continuous and controlled irrigation system
CN203598309U (en) * 2013-12-05 2014-05-21 钱永庆 Intelligent infusion monitoring system
CN105561427A (en) * 2016-01-24 2016-05-11 肖程午 Transfusion bottle replacement device and system
CN206007705U (en) * 2016-06-29 2017-03-15 广东工业大学 A kind of changing bottle of infusion device
CN206120847U (en) * 2016-07-04 2017-04-26 曾怡霖 Automatic infusion set of high stability
CN106880886A (en) * 2017-03-30 2017-06-23 青岛祥智电子技术有限公司 One kind transfusion automatic decanting device
CN107185076A (en) * 2017-07-25 2017-09-22 湖南丹尼尔智能科技有限公司 A kind of Medical multifunctional Infusion support

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012131674A2 (en) * 2011-03-30 2012-10-04 Flow Med Ltd A continuous and controlled irrigation system
CN203598309U (en) * 2013-12-05 2014-05-21 钱永庆 Intelligent infusion monitoring system
CN105561427A (en) * 2016-01-24 2016-05-11 肖程午 Transfusion bottle replacement device and system
CN206007705U (en) * 2016-06-29 2017-03-15 广东工业大学 A kind of changing bottle of infusion device
CN206120847U (en) * 2016-07-04 2017-04-26 曾怡霖 Automatic infusion set of high stability
CN106880886A (en) * 2017-03-30 2017-06-23 青岛祥智电子技术有限公司 One kind transfusion automatic decanting device
CN107185076A (en) * 2017-07-25 2017-09-22 湖南丹尼尔智能科技有限公司 A kind of Medical multifunctional Infusion support

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Application publication date: 20190326