A kind of automatic injection drug liquid make-up machine
Technical field
The utility model belongs to technical field of medical equipment, is related to a kind of automatic injection drug liquid make-up machine.
Background technique
It in existing pharmaceutical compounding techniques field, can usually be related to making up a prescription using flask for medicinal preparations such as ampoule bottle or cillin bottle, pacify
Small jar bottle or cillin bottle are the small-size glass containers for containing medical fluid, and structure includes bottle body and bottle head, and is located at bottle body, bottle
The bottleneck of depressed section, capacity are generally 1~25ml, are generally used for injection medical fluid or medicinal powder, the bottle cap one of bottle head between head
As be made of rubber, the sealing of one layer of metal aluminum foil is also arranged with outside rubber.Currently, make up a prescription to ampoule bottle or cillin bottle,
Usually hand-held ampoule bottle or cillin bottle body, injection needle tube first aspirate a part of medical fluid out of infusion bag, then again will injection
The needle body of syringe is inserted through bottle cap, the liquid medicine injection into ampoule bottle or cillin bottle, after diluting pulvis, is inserted into injection needle tube for its medical fluid
It all pumps out, is all the side using hand-held ampoule bottle or cillin bottle for this ampoule bottle or the dosage of cillin bottle
Formula has certain risk, and is easy to slide, under efficiency is also relatively low.It would therefore be highly desirable to provide a kind of in a large amount of peaces of needs
Under small jar bottle or the occasion of XiLin bottle liquid medicine configuration, and reduce the dispensation apparatus of labor intensity and risk.
Utility model content
In view of this, problem to be solved in the utility model be solve the prior art cannot effectively paramedical personnel into
The deficiency of row dispensing operation provides a kind of integrated drawing liquid, fluid injection, mixes function in one, the compatible common packing forms in market
Drug (such as ampoule bottle, cillin bottle, infusion bag) avoids that drug waste and cross contamination, man-machine performance be good and easy to operate, symbol
Close the Table top type medicine prescription making work station of medical standard.
In order to achieve the above objectives, the utility model is achieved through the following technical solutions:
The top of a kind of automatic injection drug liquid make-up machine provided by the utility model, including platform, the platform is logical
It crosses rotary drive mechanism and is rotatably equipped with swivel plate, the swivel plate, which is equipped with, puts mixing group in corresponding container bottle up and down
Part and vertical slide plate, the vertical slide plate container bottle put mix component lower section by first displacement driving mechanism relative to
Swivel plate is vertically movable, is equipped with horizontal slide plate by the way that the second displacement driving mechanism is transversely movable thereon, the level is sliding
Plate, which is equipped with, puts component and infusion bag clamp assemblies in the infusion bag of left and right distribution, and the infusion bag puts component and passes through third
It is vertically movable relative to horizontal slide plate to shift driving mechanism, the infusion bag clamp assemblies pass through the 4th displacement driving mechanism phase
For horizontal slide plate can transverse shifting, be additionally provided with medical fluid transfer assembly on the horizontal slide plate.
Further, the rotary drive mechanism is mainly made of driving device, transmission device, support frame, the support
Frame is mounted on above platform and rotatably connect with swivel plate, and the driving device is mounted below platform and by transmission dress
It sets and is sequentially connected with swivel plate, the driving device is servo motor or decelerating motor, and the transmission device is turbine and worm pair
Or gear screw pair.
Further, the container bottle, which is put, mixes component mainly by objective table, frock clamp, rotation and lifting displacement mechanism
Composition, the objective table are arranged on swivel plate, and the rotation and lifting displacement mechanism is mounted on objective table, the frock clamp
On objective table, the frock clamp is used for holding vessels bottle for the setting that can be slid vertically by rotation and lifting displacement mechanism.
Further, the rotation and lifting displacement mechanism is mainly made of decelerating motor, unilateral bearing, rotation and lifting cylinder, institute
It states decelerating motor to be rotatablely connected by unilateral bearing and rotation and lifting cylinder, the rotation and lifting drum outer wall is equipped with helicla flute;Institute
Stating frock clamp includes the two-flap type arc clip of the mounting plate being slidably matched with objective table and setting on a mounting board, the peace
Loading board is equipped in face of the corresponding surface of intermediate plate and is pressed against the adjustable spring of intermediate plate, away from intermediate plate be equipped with away from face and helicla flute
Cooperate the convex block of sliding, the intermediate plate has the groove of triangle or arc shape folder in the setting of one end of holding vessels neck part
Head.
Further, the infusion bag clamp assemblies include with the pedestal of horizontal slide plate cooperation sliding and setting in pedestal
On icepro angle rotating device and U-clamp, the U-clamp in the clamping plate of two-flap type by forming, and two clamping plates pass through compressed spring peace
On pedestal, the rotating electric machine for insulting angle rotating device and including icepros hornblock for opening U-clamp and being connect with icepro hornblock.
Further, the medical fluid transfer assembly includes for grafting container bottle respectively and infusion bag and both making to be connected to
Syringe needle adapter, for the medicine dissolving device of syringe needle adapter connection, for installing syringe needle adapter and medicine dissolving device and and horizontal slide plate
Cooperate the pedestal of sliding, the piston of the medicine dissolving device can transverse shifting relative to pedestal by the 5th displacement driving mechanism.
Further, the container bottle put mix component further include be mounted on swivel plate and for objective table relative to
Swivel plate does the 6th vertically movable displacement driving mechanism, is additionally provided with baffle on the swivel plate and is mounted on baffle and is used for
The support block that container bottle is squeezed out from frock clamp.
Further, the first displacement driving mechanism, the second displacement driving mechanism, third displacement driving mechanism, the 4th move
Position driving mechanism, the 5th displacement driving mechanism, the 6th displacement driving mechanism are in hydraulic push rod, electric pushrod or air-leg
It is a kind of.
Further, the liquid make-up machine further includes big chute, the peace for being mounted on horizontal slide plate and being used to pick up container bottle
Dress on the support frame and the small chute for picking up syringe needle adapter and is arranged below platform and respectively at big chute and small
The cillin bottle recycling frame and syringe needle of chute connection recycle frame.
Compared with prior art, the advantageous effects of the utility model are: the utility model can be rotated by swivel plate
Different angle come assist medicine dissolving device complete infusion bag to container bottle convey injection, can be completed by rotation and lifting displacement mechanism
The container bottle of mixing fat injection is quickly mixed, component can be put to infusion bag by infusion bag clamp assemblies and implement folder
It holds, component can be put by infusion bag and be connected to the vertically movable of infusion bag with syringe needle adapter, and pass through vertical slide plate into one
Step completes the connection of syringe needle adapter and container bottle;It can also be by the movement of horizontal slide plate come so that syringe needle adapter and multiple appearances
Grafting between device bottle;It can also realize that container bottle and infusion bag carry out drawing liquid, fluid injection is operated by the push-and-pull campaign of medicine dissolving device, on
Working in coordination for multiple mechanisms is stated, the medicine ordinance process that quick, orderly, circulation completes more person-times may be implemented.It compares existing
Technology, the utility model is compact-sized reasonable, easy to operate, the multiple functions such as is integrated with drawing liquid, fluid injection, mixes, make up a prescription, can be simultaneous
Hold the common plurality of specifications ampoule bottle in market, cillin bottle, infusion bag etc., the medicine ordinance in addition to preparation is without artificial dry
In advance, disposable feeding operation is only needed, automated job can be realized, improved medicine ordinance quality, in addition, matching liquid process
In can also reduce drug waste degree, be avoided as much as possible the cross contamination as caused by excessive artificial intervention, the utility model
With good man-machine performance, integrated level, high efficiency, meet the related request of medical field, can be widely applied to health care system
System.
Other advantages, target and feature of the utility model will be explained in the following description to a certain extent
It states, and to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, or
Person can be instructed from the practice of the utility model.The target of the utility model and other advantages can be said by following
Bright book is achieved and obtained.
Detailed description of the invention
It is practical to this below in conjunction with attached drawing in order to keep the purpose of this utility model, technical solution and advantage clearer
It is novel to be preferably described in detail, in which:
Fig. 1 is the positive stereoscopic diagram of the utility model liquid make-up machine;
Fig. 2 is the utility model liquid make-up machine sectional perspective schematic diagram;
Fig. 3 is the utility model liquid make-up machine sectional perspective schematic diagram;
Fig. 4 is the schematic rear view of the utility model liquid make-up machine;
Fig. 5 is the top view of the infusion bag clamp assemblies of the utility model liquid make-up machine;
Fig. 6 is the stereoscopic schematic diagram of the medical fluid transfer assembly of the utility model liquid make-up machine;
Fig. 7 is the top view of the medical fluid transfer assembly of the utility model liquid make-up machine;
Fig. 8 is the contour structures perspective view that the utility model liquid make-up machine contains casing.
Specific embodiment
Below with reference to attached drawing, the preferred embodiment of the utility model is described in detail;It should be appreciated that preferably real
Example is applied only for illustrating the utility model, rather than in order to limit the protection scope of the utility model.
Appended drawing reference in Figure of description includes: platform 1, rotary drive mechanism 2, swivel plate 3, container bottle storing mixing
Component 4, vertical slide plate 5, first shift driving mechanism 6, second and shift driving mechanism 7, horizontal slide plate 8, infusion bag storing component
9, infusion bag clamp assemblies 10, third displacement driving mechanism the 11, the 4th shift driving mechanism 12, medical fluid transfer assembly 13, container
Bottle 14, infusion bag the 15, the 5th shift driving mechanism the 16, the 6th shift driving mechanism 17, support block 18, big chute 19, small chute 20,
Cillin bottle recycles frame 21, syringe needle recycling frame 22, casing 23, operation door 24;Driving device 2a, transmission device 2b, support frame 2c;It carries
Object platform 4a, frock clamp 4b, rotation and lifting displacement mechanism 4c;Pedestal 10a, angle rotating device 10b, U-clamp 10c are insulted;Syringe needle turns
Meet device 13a, medicine dissolving device 13b, pedestal 13c, fixture block 13d, skewback 13e, inclined wedge 13f.
Embodiment is basic as shown in attached drawing 1-8: one of the present embodiment automatic injection drug liquid make-up machine, including flat
The top of platform 1, the platform 1 is rotatably equipped with swivel plate 3 by rotary drive mechanism 2, and the swivel plate 3 is equipped with and presents
Under corresponding container bottle put and mix component 4 and vertical slide plate 5, the container bottle, which is put, mixes component 4 for putting and mixing
Container bottle 15, the vertical slide plate 5 container bottle put mix component 4 lower section by first displacement driving mechanism 6 relative to
Swivel plate 3 is vertically movable, is equipped with horizontal slide plate 8, the level by the way that the second displacement driving mechanism 7 is transversely movable thereon
Slide plate 8, which is equipped with, puts component 9 and infusion bag clamp assemblies 10 in the infusion bag of left and right distribution, and the infusion bag puts component 9
For placing infusion bag 14, the clamping piece (unmarked) for buckling infusion bag neck, the infusion bag clamping group which is provided with
Part puts component 9 and shifts driving mechanism 11 relative to horizontal slide plate 8 by third for wrapping up infusion bag bag body, the infusion bag
Vertically movable, the infusion bag clamp assemblies 10 can be moved laterally by the 4th displacement driving mechanism 12 relative to horizontal slide plate 8
It is dynamic, it is additionally provided with medical fluid transfer assembly 13 on the horizontal slide plate 8, the medical fluid transfer assembly 13 is for connecting infusion bag 14 and container
Bottle 15 is simultaneously fed into container bottle after realizing the injection extracted in infusion bag, then is injected back into infusion in evacuation container bottle after mixing liquid
Bag.Using the above scheme, then the utility model is respectively injected medical fluid by the medical fluid in medical fluid transfer assembly suction infusion bag
Into several container bottles, while each container bottle is shaken, is allowed to the medical fluid injected and is uniformly mixed with the medicament in it, reused
The suction of each container bottle Chinese medicine liquid is injected back into infusion bag by medical fluid transfer assembly respectively, completes to make up a prescription.The container of the utility model
Bottle is cillin bottle or ampoule bottle, and the utility model can assist medicine dissolving device to complete infusion bag by the different angle that swivel plate rotates
Injection is conveyed to container bottle, can complete quickly to mix the container bottle of mixing fat injection by rotation and lifting displacement mechanism
It is even, component can be put to infusion bag by infusion bag clamp assemblies and implement clamping, component can be put by infusion bag to infusion bag
It is vertically movable be connected with syringe needle adapter, and the connection of syringe needle adapter and container bottle is further completed by vertical slide plate;
It can also be by the movement of horizontal slide plate come so that grafting between syringe needle adapter and multiple containers bottle;Medicine dissolving device can also be passed through
Push-and-pull movement realizes that container bottle and infusion bag carry out drawing liquid, fluid injection operates, and above-mentioned multiple mechanisms work in coordination, and may be implemented fast
Speed, orderly, circulation complete more person-times of medicine ordinance process.Against existing technologies, the utility model is compact-sized rationally, operates
Simplicity such as is integrated with drawing liquid, fluid injection, mixes, makes up a prescription at multiple functions, the common plurality of specifications ampoule bottle in compatible market, XiLin
Bottle, infusion bag etc., the medicine ordinance in addition to preparation are not necessarily to human intervention, only need disposable feeding operation, can be realized
Automated job improves medicine ordinance quality, in addition, can also reduce drug waste degree during making up a prescription, keeps away as far as possible
Exempt from the cross contamination as caused by excessive artificial intervention, the utility model has good man-machine performance, integrated level, high efficiency,
The related request for meeting medical field, can be widely applied to health system.
Specifically, rotary drive mechanism 2 is mainly made of driving device 2a, transmission device 2b, support frame 2c, support frame 2c
It is mounted on 1 top of platform and is rotatably connect with swivel plate 3, driving device 2a is mounted on 1 lower section of platform and by transmission dress
It sets 2b and swivel plate 3 is sequentially connected, driving device 2a uses servo motor or decelerating motor, and transmission device 2b uses turbine and worm
Secondary or gear screw pair.And container bottle puts and mixes component 4 mainly by objective table 4a, frock clamp 4b, rotation and lifting displacement machine
Structure 4c composition, objective table 4a are arranged on swivel plate 3, and rotation and lifting displacement mechanism 4c is mounted on objective table 4a, frock clamp
On objective table 4a, frock clamp 4b is used for holding vessels bottle for the setting that 4b can be slid vertically by rotation and lifting displacement mechanism 4c
15.Rotation and lifting displacement mechanism 4c is mainly made of decelerating motor, unilateral bearing, rotation and lifting cylinder, and decelerating motor passes through list
It is rotatablely connected to bearing and rotation and lifting cylinder, rotation and lifting drum outer wall is equipped with helicla flute, and frock clamp is equipped with and the spiral
The convex block of slot cooperation sliding, the utility model solve container bottle liquid medicine, and artificial is infused the big problem of water labor intensive,
Shift technique is gone up and down using decelerating motor rotary type one-way bearing, container bottle is manually installed on Work fixture device, starting
The power supply device of decelerating motor drives container bottle Work fixture device uniformly to swing up and down, reaches thawing after decelerating motor starting
The purpose of container bottle liquid medicine;Frock clamp includes two valves with the objective table 4a mounting plate being slidably matched and setting on a mounting board
Formula arc clip, mounting plate are equipped with the adjustable spring for being pressed against intermediate plate in face of the corresponding surface of intermediate plate, and convex block is arranged in mounting plate
The face that deviates from of intermediate plate is gone up and deviates from, intermediate plate has the groove of triangle or arc shape in the setting of one end of holding vessels neck part
Collet is insulted angle principle with square, the round cillin bottle of overall dimensions of different sizes can be completely fused together.And
The icepro angle rotating dress that infusion bag clamp assemblies 10 include and horizontal slide plate 8 cooperates the pedestal 10a of sliding and is set on the base
10b and U-clamp 10c are set, the U-clamp in the clamping plate of two-flap type by forming, and two clamping plates are mounted on pedestal by compressed spring
On, the rotating electric machine for insulting angle rotating device and including icepros hornblock for opening U-clamp and being connect with icepro hornblock, by infusion bottle
<bag>is placed on fixing tool constructional device, is opened rotating electric machine to the long Ling Jiao for insulting hornblock, is then started the 4th displacement and drive
Motivation structure 12 pushes infusion bag clamp assemblies 10 to push ahead to infusion bottle<bag>center, closes rotating electric machine, opens and insults
Angle rotating device is rotated by 90 °, and locks infusion bottle<bag>using spring principle, return direction is returned backward with trapezium structure
Position principle, with screw thread rotation, return is pushed backward, is arrived original reset position to realize, is rotated by 90 ° and opens Ling Jiao again
The long Ling Jiao of block resets.And medical fluid transfer assembly 13 includes for grafting container bottle 14 respectively and infusion bag 15 and both making to be connected to
Syringe needle adapter 13a, for syringe needle adapter connection medicine dissolving device 13b, for install syringe needle adapter and medicine dissolving device and with
The pedestal 13c of horizontal slide plate cooperation sliding, it installs on the base and is used to clamp the fixture block 13d of syringe needle adapter, be mounted on water
Skewback 13e and installation on flat runner 8 cooperate the inclined wedge for making syringe needle adapter be extruded fixture block on the base and with skewback
13f, the skewback are installed on the support frame, and inclined wedge is connect with pedestal, and the piston of medicine dissolving device 13b passes through the 5th displacement driving mechanism 16
It can transverse shifting relative to pedestal 13c;The syringe needle adapter and medicine dissolving device are all made of disposable sterile liquid medicine translator.And
It further includes being mounted on swivel plate 3 and doing for objective table 4a relative to swivel plate 3 vertically movable that container bottle, which puts and mixes component 4,
The 6th displacement driving mechanism 17, while baffle (unmarked) is additionally provided on swivel plate 3 and be mounted on baffle and be used for will hold
The support block 18 that device bottle 15 is squeezed out from frock clamp.It can according to demand on this objective table and several appearances are arranged in the size of liquid make-up machine
Device bottle.The utility model overturns entire mechanical structure with concentric shafts Mechanical Driven principle, and under normal circumstances, machinery is maintained at flat
The vertical 90 degree of positions in face, rotary drive mechanism connect shaft coupling with thread worm speed reducer device, and shaft coupling connects the circular shaft heart
The connection of gear thread worm, reaches practical rollover effect.
In use, the utility model proposes a kind of, the automation without secondary pollution with stability safeguard construction is infused
It penetrates and uses drug liquid make-up machine, firstly, opening the operation door on casing, and put component and container bottle storing mixing component in infusion bag
It is middle to place infusion bag and container bottle respectively, interconnected syringe needle adapter and medicine dissolving device are also placed in medical fluid transfer assembly
Shutoff operation door afterwards;Then, it drives infusion bag to put component using third displacement driving mechanism to move straight up, turn syringe needle
Device grafting is connect to enter in infusion bag, meanwhile, infusion bag clamp assemblies horizontal direction infusion bag side is driven using the 4th displacement driving mechanism
So that U-clamp is wrapped infusion bag to movement, and using angle rotating device is insulted, completes the clamping auxiliary of infusion bag;Then, is utilized
Two displacement driving mechanisms drive horizontal slide plate transverse shiftings, so that syringe needle adapter is directed at the oral area of a container bottle, then pass through the
One displacement driving mechanism drives vertical slide plate to move up, and enters another syringe needle grafting of syringe needle adapter in container bottle, completes
Connection between infusion bag and container bottle;Then, rotary drive mechanism moves, and drives swivel plate to rotate 100 °~130 °, preferably
110 °, make infusion bag in upper and container bottle under, then drives medicine dissolving device to transfer to far from syringe needle by the 5th displacement driving mechanism
The movement of device direction is completed to extract injection to infusion bag and is poured into container bottle;Then, rotary drive mechanism circle round 50 °~
80 °, preferably 70 ° make infusion bag in lower and container bottle upper, and drive vertical slide plate far from holding by the first displacement driving mechanism
Device bottle moves downward, so that syringe needle adapter exits container bottle;Then, the rotation of connection corresponding with the container bottle after the injection
The movement of displacement mechanism is gone up and down to drive the container bottle to do and quickly shake up movement up and down;Then, then by the second displacement drive
Mechanism drives horizontal slide plate transverse movement, and is again positioned at below the oral area of next container bottle, continues to repeat the above steps, directly
All container bottles on to objective table are completed to inject and mix to finish;Then, then by rotating mechanism it is back to swivel plate just
Beginning state, i.e. swivel plate are disposed vertically, and are in 90 °, and infusion bag in lower and container bottle upper, then, pass through the first displacement driving
The appearance to each fluid injection, mixing is completed in the repetition cooperation of multiple station displacement driving mechanisms such as mechanism, the second displacement driving mechanism
Mixed liquor in device bottle carries out negatively pressurized liposuction technique and is injected back into infusion bag;Finally, respectively by first displacement driving mechanism,
Syringe needle adapter and infusion bag and container bottle point are completed in the common cooperation of second displacement driving mechanism, third displacement driving mechanism
From then, by the horizontal collective effect slided and cooperate skewback, inclined wedge to pedestal, after making syringe needle adapter exit fixture block
It is imported in syringe needle recycling frame by small chute, and the multiple containers bottle on objective table then passes through the 6th displacement driving mechanism and moves upwards
Carry out band dynamic object stage also to move upwards, and using the support block insertion frock clamp on baffle and between container bottle, and as it is inserted
Container bottle is squeezed out and is entered in cillin bottle recycling frame after being picked up by big chute by the depth entered, and infusion bag clamp assemblies pass through the 4th
Displacement driving mechanism leaves the clamping to infusion bag, and the operation that the infusion bag for preparing medical fluid then passes through opening casing is artificial behind the door
It takes out, thus completes the configuration of a large amount of container bottle liquid medicines, and reduce labor intensity and risk.
This liquid make-up machine uses artificial intelligence dispensing method, and the conversion with liquid during liquid uses table front Vertical Square
To 90-270 degree it is lateral after turn over rotation mode and move back and forth, using disposable sterilized using medical fluid transfer assembly and infusion bag (bottle)
Docking insertion is filling to carry out drug by converting back and forth between infusion bag (bottle) and container bottle with extraction technique, can effectively improve and makes up a prescription
Occurs secondary pollution in the process, machine shakes instant device using turbin generator is biased to, and using for this device can be more efficient, quick
The drug that need to prepare of dissolution, solve it is traditional it is artificial with liquid when vibrator need to be used to re-dissolve insoluble medicine difficulty
It topic and is worked with tired during liquid.The craft traditional using effective solution of the machine is a large amount of with needing in liquid work
The problem of manpower participates in, while solving insoluble medicine needs and falling into a long wait or be reentered into what independent oscillator was dissolved
With liquid method;Machine exerts oneself puncture process firmly more uniformly, to be had the puncture method of cillin bottle and infusion bag (bottle)
Effect occasionally has the generation for the accidents such as stabbing when having prevented artificial puncture, the operation measure automated by machine is saving
Simultaneously, Comprehensive Correlation manpower matches the mode of liquid to a large amount of manpower, is carried out using the machine with if liquid, machine it is comprehensive with liquid
Closing speed is about 1.7 times or so that manpower matches liquid, greatly improves with liquid speed degree, reduces with medical staff during liquid
All kinds of injuries, effectively raise the working efficiency of medical staff.
The first displacement driving mechanism 6, second in the present embodiment shifts driving mechanism 7, third displacement driving mechanism 11, the
Four displacement driving mechanisms the 12, the 5th shift driving mechanism the 16, the 6th and shift driving mechanism 17 using motor driven threaded rod and match
Close the structure type for having guide rail.Certainly hydraulic push rod, electric pushrod or air-leg can also be used in various embodiments
One of.
Liquid make-up machine in the present embodiment further include be mounted on horizontal slide plate and for pick up container bottle 15 big chute 19,
Be mounted on support frame 2c and the small chute 20 for picking up syringe needle adapter 13a and be arranged below platform 1 and respectively at
The cillin bottle recycling frame 21 and syringe needle that big chute 19 and small chute 20 connect recycle frame 22.It is primary to can achieve this liquid make-up machine in this way
Property unify recycling respectively to can carry out container bottle and syringe needle adapter after multiple containers bottle implementing injection.
Liquid make-up machine in the present embodiment further includes casing 23, the operation door 24 being arranged on casing and is arranged in casing
Ultraviolet radiator.It can implement hands-off operation to liquid make-up machine, avoid pollution;Meanwhile ultraviolet radiator can in casing into
The quick disinfection and sterilization of row, to promote injection environmental quality.
Finally, it is stated that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng
The utility model is described in detail according to preferred embodiment, those skilled in the art should understand that, it can be to this
The technical solution of utility model is modified or replaced equivalently, should all without departing from the objective and range of the technical program
Cover in the scope of the claims of the utility model.