For the air pressure automatic imitation equipment of vacuum test tube negative pressure capacity checkTechnical field
The present invention relates to medical device field, and in particular to a kind of gas for vacuum test tube negative pressure capacity checkPressure automatic imitation equipment.
Background technology
At present, vacuum test tube is widely used in medical treatment at different levels, inspection body.Nominal capacity identical vacuum blood collectionPipe is used in different regions, and because of factors such as height above sea level difference, climate differences, ambient pressure performance is different, can cause blood samplingThe difference of amount.Therefore, manufacturing enterprise is when vacuum test tube is produced, it is necessary to preset negative pressure journey according to user's locality atmospheric pressureDegree, so that product adaptation uses the quantitative blood sampling under the conditions of ground ambient pressure.But, different air pressure are not simulated in the marketEnvironment is presented the device of vacuum blood collection blood sampling tube capacity, and manufacturing enterprise or quality monitoring mechanism of government adopt for vacuumBlood sampling capacity of the blood vessel under different air pressure environment can only do nominal capacity inspection by the method for calculating, there is methodology limitationOn error.
For the air pressure automatic imitation equipment of vacuum test tube negative pressure capacity check design seek to allow manufacturing enterprise orQuality monitoring mechanism of person government can easily simulate the specified use air pressure environment of vacuum test tube and show in the gasActual blood sampling capacity condition under pressure ring border, to detect whether the vacuum test tube is applied to nominal air pressure environment.
The content of the invention
To solve problem above, the present invention is achieved through the following technical solutions：
For the air pressure automatic imitation equipment of vacuum test tube negative pressure capacity check, including air pressure simulation box and located at the air pressureAnalog sampling apparatus in simulation box；The air pressure simulation box is the body structure that front side is provided with chamber door；The air pressure simulation boxBackboard in the middle of it is closely sealed be embedded with two valves, and one end of the valve is stretched into the air pressure simulation box；The other end is by leadingGas flexible pipe is connected with threeway electromagnetic gas valve；In two other port of the threeway electromagnetic gas valve, one of them is soft by air guidePipe is connected with air pump, another and atmosphere；The threeway electromagnetic gas valve and air pump are close to be fixed on the air pressure simulation boxBackplate the back side；The upper inwall of the air pressure simulation box is provided with electronic pressure transmitter；The electronic pressure transmitterIt is electrically connected with master control borad；The master control borad is located at the air pressure simulation box upper end；The master control borad also respectively with the electromagnetism gasValve and air pump are electrically connected；The master control borad is also associated with power pack.
Preferably, the analog sampling apparatus include upper slide mechanism, lower sliding body, sampling needle fixture, sampling needle, adoptBlood vessel frame, installing plate, flexible pipe and wide-mouth bottle；The upper slide mechanism is arranged in a mutually vertical manner with the lower sliding body；On describedSlide mechanism includes the first motor, the first leading screw, the first sliding block, the first slide rail and the first proximity transducer；First leading screwIt is vertically arranged, and is connected with the spindle drive of first motor；First slide rail is vertically located at first motor lower section；First sliding block is arranged on first leading screw and the first slide rail；Set near first motor side on first slide railThere is first proximity transducer；
The lower sliding body includes the second motor, the second leading screw, the second sliding block, the second slide rail and the second proximity transducer；InstituteState the second leading screw to be horizontally disposed with, and be connected with the spindle drive of second motor；The second slide rail level is located at described theTwo motors left side；Second sliding block is arranged on second leading screw and the second slide rail；Near described on second slide railSecond motor side is provided with second proximity transducer；
The sampling needle fixture is fixedly connected on the first sliding block right-hand member；The sampling needle is detachably connected on described adopting verticallyOn sample pin fixture, and the sampling needle is connected with the flexible pipe；The flexible pipe is on the installing plate；The installing plate is fixedIt is connected on the inwall of the air pressure simulation box；The support of blood collecting pipe is detachably connected on the second sliding block top；When using,Heparin tube can be put on the support of blood collecting pipe vertically, and heparin tube can be by drive displacement to sampling needle underface；
First proximity transducer, the second proximity transducer, the first motor and the second motor are connected with the master control borad.
Preferably, the sampling needle includes needle point, the needle body and caudal peduncle, and the needle body is provided with the handle wing with the junction of caudal peduncle,The least significant end of the caudal peduncle and the soft pipe connection.
Preferably, the sampling needle fixture includes train wheel bridge and lower plate；The train wheel bridge and lower plate pass through locking screwTether and be connected together；The lower plate level is fixedly connected on first sliding block；And the lower plate is provided with one group smallHole, aperture radius are more than the needle body radius of the sampling needle, and caudal peduncle and the handle wing, the train wheel bridge pair less than the sampling needleThe aperture of the lower plate is answered to be provided with the aperture that one group of caudal peduncle for being available for the sampling needle passes through.
Preferably, also electrically it is plugged with touching display screen on the master control borad；Be provided with the touching display screen with it is describedThe buzzer siren of master control borad electrical connection；Outer upper ends of the touching display screen located at the air pressure simulation box.
Preferably, the chamber door is provided with observation window and electronic lock, and the edge of the chamber door is provided with sealing strip or sealingCircle.
Beneficial effect：The equipment for not simulating different air pressure environment in the market vacuum blood collection blood sampling tube capacity is presentedOr device, the blood sampling capacity of manufacturing enterprise or quality monitoring mechanism of government for vacuum test tube under different air pressure environment can onlyNominal capacity inspection is done by the method for calculating, there is the error in methodology limitation.For the inspection of vacuum test tube negative pressure capacityThe invention of the air pressure automatic imitation equipment of survey allows manufacturing enterprise or the quality monitoring mechanism of government can easily to simulate vacuumThe specified use air pressure environment of heparin tube simultaneously shows the actual blood sampling capacity condition under the air pressure environment, to detect the vacuumWhether heparin tube is applied to nominal air pressure environment.This invention becomes nominal capacity detection of the vacuum test tube under standard pressureSimply, it is convenient and more accurate.
Wherein the present invention forms a confined space by air pressure analog unit, by setting valve, pressure sensor, masterControl plate, threeway electromagnetic gas valve and air pump are simple and convenient come to manufacture the air pressure environment of needs in casing；Again by the air pressure mouldIntend setting analog sampling apparatus in case simulating the sampling under specified air pressure.And because the analog sampling apparatus are automationsWhat control was completed, so be located in air pressure simulation box just artificial need not be operated in air pressure simulation box, so as to ensure thatThe stabilization of the air pressure environment in air pressure simulation box.
Brief description of the drawings
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is front view of the invention；
Fig. 3 is the backplate structure schematic diagram of air pressure simulation box；
Fig. 4 is valve, threeway electromagnetic gas valve, the annexation figure of air pump；
Fig. 5 is the structural representation of analog sampling apparatus；
Fig. 6 is the structural representation of sampling needle；
Fig. 7 is the sectional view of sampling needle fixture；
Fig. 8 is circuit structure schematic diagram of the invention.
Reference is as follows：
01st, air pressure simulation box；02nd, chamber door；03rd, observation window；04th, touching display screen；05th, master control borad；06th, electronic lock；07th, power supplyBox；08th, valve；09th, threeway electromagnetic gas valve；010th, air pump；011st, soft air-guide pipe；11st, the first motor；12nd, the first leading screw；13、First slide rail；14th, the first sliding block；15th, the first proximity transducer；21st, the second motor；22nd, the second leading screw；23rd, the second slide rail；24th, the second sliding block；25th, the second proximity transducer；3rd, sampling needle fixture；31st, lower plate；32nd, train wheel bridge；33rd, aperture；34th, spiral shellBolt mounting hole；4th, sampling needle；41st, needle point；42nd, the needle body, 43, the handle wing；44th, caudal peduncle；5th, support of blood collecting pipe；6th, heparin tube；7th, flexible pipe；8th, installing plate；9th, wide-mouth bottle.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples, it will be appreciated that structure of the inventionIt is not limited in following examples：
Referring to shown in Fig. 1-4 and Fig. 8, a kind of air pressure automatic imitation for vacuum test tube negative pressure capacity check of the present inventionEquipment, including air pressure simulation box 01 and the analog sampling apparatus in air pressure simulation box 01 1；Air pressure simulation box 01 sets for front sideThere is the body structure of chamber door 02；It is closely sealed in the middle of the backboard of air pressure simulation box 01 to be embedded with two valves 08, and one end of valve 08 is stretchedEnter in air pressure simulation box 01；The other end is connected with threeway electromagnetic gas valve 09 by soft air-guide pipe 011；Threeway electromagnetic gas valve 09 it is anotherIn outer two ports, one of them is connected with air pump 010 by soft air-guide pipe 011, another and atmosphere；Threeway electromagnetism gasValve 09 and air pump 010 are close to the back side of the backplate for being fixed on air pressure simulation box 01；The upper inwall of air pressure simulation box 01 is provided withElectronic pressure transmitter；Electronic pressure transmitter is electrically connected with master control borad 05；Master control borad 05 is located at air pressure simulation box upper end；Master controlPlate 05 is also electrically connected with electromagnetic gas valve and air pump 010 respectively；Master control borad 05 is also associated with power pack 07.
Referring to shown in Fig. 1,2 and 5, analog sampling apparatus 1 include upper slide mechanism, lower sliding body, sampling needle fixture 3,Sampling needle 4, heparin tube 6, support of blood collecting pipe 5, installing plate 8, flexible pipe 7 and wide-mouth bottle 9；Upper slide mechanism mutually hangs down with lower sliding bodyIt is straight to set；Upper slide mechanism includes the first motor 11, the first leading screw 12, the first sliding block 14, the first slide rail 13 and the first close biographySensor 15；First leading screw 12 is vertically arranged, and is connected with the spindle drive of the first motor 11；First slide rail 13 is located at first verticallyThe lower section of motor 11；First sliding block 14 is arranged on the first leading screw 12 and the first slide rail 13；Near the first motor on first slide rail 1311 ends are provided with the first proximity transducer 15；
Lower sliding body includes the second motor 21, the second leading screw 22, the second sliding block 24, the second slide rail 23 and the second proximity transducer25；Second leading screw 22 is horizontally disposed with, and is connected with the spindle drive of the second motor 21；The level of second slide rail 23 is located at the second motor21 left sides；Second sliding block 24 is arranged on the second leading screw 22 and the second slide rail 23；Near the end of the second motor 21 on second slide rail 23It is provided with the second proximity transducer 25；
Sampling needle fixture 3 is fixedly connected on the right-hand member of the first sliding block 14；Sampling needle 4 is detachably connected on sampling needle fixture 3 vertically,And sampling needle 4 is connected with flexible pipe 7；Flexible pipe 7 is on installing plate 8；Installing plate 8 is fixedly connected on the inwall of air pressure simulation box 01On；Support of blood collecting pipe 5 is detachably connected on the top of the second sliding block 24；When using, heparin tube 6 can be vertically loaded on support of blood collecting pipe 5, andHeparin tube 6 can be by drive displacement to the underface of sampling needle 4；
First proximity transducer 15, the second proximity transducer 25, the first motor 11 and the second motor 21 are connected with master control borad 05.
Shown in Figure 6, sampling needle 4 includes needle point 41, the needle body 42 and caudal peduncle 44, and the needle body 42 sets with the junction of caudal peduncle 44The least significant end for having the handle wing 43, caudal peduncle 44 is connected with flexible pipe 7.
Shown in Figure 7, sampling needle fixture 3 includes train wheel bridge 32 and lower plate 31；Train wheel bridge 32 and lower plate 31 pass throughClamping screw links together；The level of lower plate 31 is fixedly connected on the first sliding block 14；And lower plate 31 is provided with one group smallHole 33, the radius of aperture 33 is more than the radius of the needle body 42 of sampling needle 4, and caudal peduncle 44 and the handle wing 43, train wheel bridge 32 less than sampling needle 4The aperture 33 of correspondence lower plate 31 is provided with the aperture 33 that one group of caudal peduncle 44 for being available for sampling needle 4 passes through.
Referring to shown in Fig. 1,2 and 8, touching display screen 04 is also electrically plugged with master control borad 05；Set in touching display screen 04There is the buzzer siren electrically connected with master control borad 05；Outer upper ends of the touching display screen 04 located at air pressure simulation box 01.Honeybee is setThe effect of ring alarm is to send caution sound prompting operator's taking-up heparin tube when the present invention completes all operations to carry out public affairsClaim capacity check, and operation irregularity state of the invention is warned.Touching display screen 04 can be input into master control borad 05 orCancel operational order and show the air pressure in air pressure simulation box 01 or the operation information being carrying out in real time.
Referring to shown in Fig. 1 and 2, chamber door 02 is provided with observation window 03 and electronic lock 06, and the edge of chamber door 02 is provided with sealingBar or sealing ring.Sealing ring or sealing strip purpose are the sealing for increasing air pressure simulation box；The purpose of electronic lock 06 is, byIn there is pressure difference with the outer atmospheric pressure of case in air pressure simulation box operationally case, the electronic lock 06 is first when the present invention opens workFirst locking, it is ensured that safe operation.
Operation principle：
The first step, first installs sampling needle, flexible pipe and adds water, specially：The needle body 42 of sampling needle 4 is passed through into lower plate 31, then willTrain wheel bridge 32 from caudal peduncle to passing through so that the handle wing 43 is just stuck in centre by train wheel bridge 32 and lower plate 31, then in bolt mounting holesClamping screw is installed in 34, that is, completes the clamping of sampling needle 4；Flexible pipe 7 is attached on the caudal peduncle 44 of puncture needle 4, makes flexible pipe 7The through hole from device in the installing plate 8 of the top of wide-mouth bottle 9 is passed through respectively, and one end of flexible pipe 7 is stretched into wide-mouth bottle 9；To wideAddition pure water, makes the water surface flood flexible pipe 7 in mouth bottle 9；Heparin tube 6 is vertically loaded on support of blood collecting pipe 5；Chamber door 02 is closed, and is givenWhole device of the present invention is powered.
Second step, can be with more convenient when the present invention is provided with touching display screen 04, and touching display screen 04 passes through master control borad05 and electronic pressure transmitter the air pressure in air pressure simulation box 01 directly can be directly translated into data signal, such that it is able to logicalTouching display screen 04 is crossed first for air pressure simulation box 01 presets specified air pressure；Master control borad 05 is detected according to electronic pressure transmitterAir pressure simulation box 01 in air pressure and the specified air pressure of operator's input between pressure differential, intelligence computation judges it is toward air pressureInflation or the pumping from air pressure simulation box 01 in simulation box 01, so that two threeway electromagnetic gas valves 09 of Based Intelligent Control connect inflationPattern or extraction pattern.The getting type of modes of inflation is, the control air pump 010 of master control borad 05 inflate to threeway electromagnetic gas valve09 opens two ports of connection air pump 010 and valve 08, and closes the threeway electromagnetic gas valve 09 and connect open to atmosphere port, whileThe control air pump 010 of master control borad 05 be evacuated to threeway electromagnetic gas valve 09 open two ports of connection air pump 010 and air, and sealClose the port that the threeway electromagnetic gas valve connects valve 08；The getting type of extraction pattern is that the control air pump 010 of master control borad 05 is evacuatedTo threeway electromagnetic gas valve 09 open two ports of connection air pump 010 and valve 08, and close the threeway electromagnetic gas valve 09 and connectOpen to atmosphere port, at the same master control borad 05 control air pump 010 inflate to threeway electromagnetic gas valve 09 open connection air pump 010 with it is bigTwo ports of gas, and close the port that the threeway electromagnetic gas valve connects valve 08.Master control borad 05 is connected to operator's instruction and startsOpen work before, first can the locking of automatic electronic lock 06, if electronic lock locking fail, master control borad 05 can stop perform operatorInstruct and control buzzer siren to send caution sound.
3rd step, is simulated sampling work：Master control borad 05 controls the second motor 21 to work, so as to drive the second leading screw 22Rotation, makes support of blood collecting pipe 5 displacement underface as sampling needle 4 of second sliding block 24 with heparin tube 6 is mounted with movable slider, mainControl plate 05 receives the signal that support of blood collecting pipe 5 reaches predeterminated position, and master control borad 05 controls the first motor 11 to work, so as to drive theOne leading screw 12 is rotated, and makes the first sliding block 14 drive sampling needle fixture 3 to move downward, and puncture needle 4 is punctured into heparin tube 6, due toDefault negative pressure in heparin tube 6, makes the pure water in the wide-mouth bottle 9 of connection be entered into heparin tube 6 by flexible pipe 7；Hereafter master controlPlate 05 controls the first motor 11 to work, and makes the first motion upwards of sliding block 14, drives sampling needle 4 to extract upwards, and device is just completedThe series of tasks that simulation punctures, samples and pull out pin；After the completion of pin work is pulled out, master control borad 05 drives the second motor 21 to work, bandDynamic second leading screw 22 rotates, so as to drive the support of blood collecting pipe 5 on the second sliding block 24 to move right near the one of the second motor 21End, the now control of master control borad 05 buzzer siren sends caution sound prompting operator's work and completes, and can dismantle heparin tube 6 and doNominal capacity is detected.Wherein, the effect of the first proximity transducer 15 is when coordinating main control control the first motor 11 to start workingPosition for the first sliding block 14 is corrected, so that the first sliding block 14 reaches specified location in default step number；Second connectsThe effect of nearly sensor 25 is carried out when being and coordinating master control borad control the second motor 21 to start working for the position of the second sliding block 24Correction, so that the second sliding block 24 reaches specified location in default step number.
General principle of the invention and principal character and advantages of the present invention has been shown and described above.The technology of this areaPeople simply illustrates this hair it should be appreciated that the present invention is not limited to the above embodiments described in above-described embodiment and specificationBright principle, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changesBe all fall within the protetion scope of the claimed invention with improvement.The claimed scope of the invention is by appending claims and its waitsEffect thing is defined.