CN108295341A - A kind of syringe of efficient-filtering function - Google Patents
A kind of syringe of efficient-filtering function Download PDFInfo
- Publication number
- CN108295341A CN108295341A CN201810233597.2A CN201810233597A CN108295341A CN 108295341 A CN108295341 A CN 108295341A CN 201810233597 A CN201810233597 A CN 201810233597A CN 108295341 A CN108295341 A CN 108295341A
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- China
- Prior art keywords
- liquid
- check valve
- valve film
- floating type
- lower cover
- 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.)
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- 238000001914 filtration Methods 0.000 title claims abstract description 52
- 239000007788 liquid Substances 0.000 claims abstract description 153
- 238000007667 floating Methods 0.000 claims abstract description 70
- 239000003814 drug Substances 0.000 claims abstract description 42
- 239000012528 membrane Substances 0.000 claims abstract description 38
- 210000002445 nipple Anatomy 0.000 claims abstract description 26
- 239000012530 fluid Substances 0.000 claims abstract description 20
- 238000002347 injection Methods 0.000 claims abstract description 12
- 239000007924 injection Substances 0.000 claims abstract description 12
- 239000000706 filtrate Substances 0.000 claims description 27
- 238000005374 membrane filtration Methods 0.000 claims description 12
- 239000000284 extract Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims 1
- 239000012535 impurity Substances 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 229940079593 drug Drugs 0.000 description 2
- 210000003734 kidney Anatomy 0.000 description 2
- 238000001728 nano-filtration Methods 0.000 description 2
- 208000005189 Embolism Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- 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
- A61M5/178—Syringes
-
- 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
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/3145—Filters incorporated in syringes
-
- 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
- A61M2205/75—General characteristics of the apparatus with filters
- A61M2205/7545—General characteristics of the apparatus with filters for solid matter, e.g. microaggregates
Landscapes
- 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
The invention discloses a kind of syringes of efficient-filtering function, and filter device is provided in syringe comprising upper cover and lower cover have been arranged between micron order liquid medicine filtering membrane and floating type check valve film；The lower face of upper cover is provided with deflector hole boss；Micron order liquid medicine filtering membrane is fixedly installed on upper cover lower face；Floating type check valve film is set between deflector hole boss and lower cover, can be moved up and down to play the role of closing and open and upper deflector hole boss matching part fluid course；Lower cover is provided with lower drainage channel, and when extracting liquid, liquid can hold up floating type check valve film；When injection liquid, floating type check valve film, which moves down, is supported in lower cover, and liquid is discharged into nipple mesoporous through lower drainage channel.The syringe construction of the present invention is unique, reasonable, can effectively filter out the impurity in liquid during extracting liquid, and enable and obtain enough liquid medicine flow amounts when propelling liquid.
Description
Technical field
The present invention relates to a kind of Medical Devices more particularly to a kind of syringes.
Background technology
Syringe is a kind of common medical instruments.Early in the 15th century, Italian's Ka Di Nellies just propose syringe
Principle.It is mainly extracted with syringe needle and either injects gas or liquid.
The liquid that syringe is needed for medical treatment to patient injection, is being a kind of very universal medical procedure now,
The appearance of syringe is the once epoch-making revolution of medical instruments field, is extracted or is noted with syringe and syringe needle
This process for entering liquid is called injection.Syringe is carried syringe and the matching piston core of aperture and nipple by front end
Bar forms, and is used for extracting a small amount of liquid from medicine bottle first, is then injected into the position of human body needs.When core bar pulls out
When going out, liquid is sucked through syringe needle from the aperture of syringe front end nipple；Liquid is passed through into syringe needle from nipple aperture when core bar is pushed into
Into tissue.
And when we extract liquid from medicine bottle, some air are inevitably adulterated, in order to remove injection
Air in device to avoid embolism, be inverted, gently beat by we by syringe, then pushes core bar, medicine of the discharge with air
Liquid.
It is understood that liquid is not pure, wherein always there are various impurity, however syringe injection
Liquid is often directly entered blood blood vessel, these impurity will once bring irreversible into human vas to human body
Injury.With medical advances, this risk that may be present in injection also increasingly attracts people's attention, and how to remove
Impurity in these liquids becomes people problem urgently to be resolved hurrily.
Invention content
Technical problem to be solved by the invention is to provide a kind of unique structure, rational syringes, can extract medicine
During liquid, the impurity in liquid is effectively filtered out, and enables and obtains enough liquid medicine flow amounts when propelling liquid.
The present invention to solve above-mentioned technical problem and the technical solution adopted is that：
A kind of syringe of efficient-filtering function includes syringe and piston core pin that front end carries hollow nipple, in nipple
Equipped with nipple mesoporous；The front end of the syringe inner cavity is provided with a filter device, the filter device surrounding and the needle
The inner wall of cylinder matches sealeds connection, the formation liquid liquid storage cylinder between the filter device and piston core pin；The filtering dress
Set including：The upper cover and lower cover being fixedly connected have one section of filtrate chamber between the upper cover and lower cover；In the filtrate chamber
It is provided with a piece of micron order liquid medicine filtering membrane and a piece of floating type check valve film；
In the filtrate chamber, deflector hole boss on one is provided on the lower face of the upper cover, in the upper water conservancy diversion
Hole boss is provided centrally with center deflector hole and penetrates through the filtrate chamber and liquid liquid storage cylinder；
The micron order liquid medicine filtering membrane is fixedly installed on the upper cover lower face at the top of the filtrate chamber and described
Fitting, and formed and be tightly connected between its edge and the upper cover；It is distributed on the micron order liquid medicine filtering membrane uniformly distributed
Micron filter hole；The upper cover is being provided with upper drainage through-hole with the matched position of micron order liquid medicine filtering membrane, will
It is drained to the liquid liquid storage cylinder by the filtered liquid of micron order liquid medicine filtering membrane；
The floating type check valve film is set between the upper deflector hole boss and lower cover, described floating type unidirectional
The upper surface of valve film and the lower face shape of the upper deflector hole boss match, and the floating type check valve film can be on described
It is moved up and down between deflector hole boss and lower cover to play closing and open the floating type check valve film and upper deflector hole boss
The effect of the fluid course of matching part, the energy when the lower face of the floating type check valve film and upper deflector hole boss fits
The fluid course at this is closed in sealing；It is more than the upper center deflector hole under shed diameter in the floating type check valve film diameter
Outer ring portion be provided with several fluid courses in order to liquid extract circulate；
The lower cover is provided with lower drainage channel, and the lower drainage channel penetrates through in the filtrate chamber and nipple
Hole；When extracting liquid, the liquid, which flows through the lower roads drainage Tong Hou, can hold up the floating type check valve film so that institute
It states floating type check valve film to move up the fitting upper deflector hole boss, seal the fluid course closed at this, the liquid is made to pass through
Enter the liquid liquid storage cylinder through the upper drainage through-hole after the micron order medical filtration membrane filtration；When injection liquid, institute
It states floating type check valve film and moves down and be supported in the lower cover, the liquid liquid storage cylinder liquid is through the upper center deflector hole, described
After the fluid course in floating type check valve film outer ring portion, the nipple mesoporous is discharged into through the lower drainage channel.
Further, the lower drainage channel of the lower cover includes：Lower cover is provided centrally with described in lower center deflector hole perforation
Filtrate chamber and nipple mesoporous；The floating type matched position of check valve film is being provided with lower cover annular groove, described
If being provided with dryvalve film support protrusion in lower cover annular groove, when the floating type check valve film moves down, be supported in it is described under
In the valve film support protrusion of lid；The lower cover is provided with several lower cover through-holes in order to filtrate in lower cover annular groove position
Circulation；The bottom surface of the lower cover lower face and the syringe inner cavity fits, in the lower cover on the lower face of the lower cover
Diversion trench connection is provided between through-hole and lower center deflector hole.
The upper cover is being provided with upper cover annular groove with the matched position of micron order liquid medicine filtering membrane, on described
Several filter membrane support protrusions are provided in bezel ring, connected in star to support the micron order liquid medicine filtering membrane, the upper drainage through-hole to set
It is placed in the position in the upper cover annular groove.
Further, the central part that the floating type check valve film matches with the upper center deflector hole under shed is set
If being equipped with dryvalve membrane filtration through-hole.
Further, the valve membrane filtration through-hole is nanofiltration through-hole.
The syringe construction of the present invention is unique and ingenious upper cover and lower cover by being fixedly connected constitutes a unique texture
Filtrate chamber, the lower face of upper cover is provided with micron order liquid medicine filtering membrane in cavity, is extracting liquid in a flash, is floating
Formula check valve film moves up under the impact of liquid and closes the floating type check valve film and upper deflector hole boss lower surface naturally
The fluid course of joint place, liquid can only penetrate the efficient of micron order liquid medicine filtering membrane, after secondary filter by upper drainage through-hole into
Enter the liquid liquid storage cavity region of syringe, to realize efficient filtering.
And when propelling liquid, it is necessary first to go to front end without entrance during the liquid and drawing liquid of filtering syringe
Gas, which pushes away, to be removed, and normal injection flow then can be entered；During propelling, the floating type check valve film is outflowing
It is moved down naturally under the promotion of liquid and is supported in lower cover；At this point, the floating type check valve film is pasted with upper deflector hole boss lower surface
Fluid course at conjunction is opened, and it is empty that the liquid in liquid liquid storage cylinder is directly entered the filtering by upper center deflector hole naturally
Chamber, and nipple mesoporous is entered by the lower drainage channel that lower cover is arranged, it propels.
Some syringes are using the structure type for propelling filtering, such that the resistance propelled obviously increases, liquid medicine flow
Amount substantially reduces, and will become a kind of defect under certain medical scenes.And the syringe of the present invention is using extraction liquid
Shi Jinhang fine filterings propel the structure type not filtered when liquid so that enough liquid medicine flows can be obtained when propelling liquid
Amount.
And the setting of lower center deflector hole is so that moving up for when drawing liquid floating type check valve film is more rapid, ensures and above leads
The fluid course of discharge orifice boss lower surface joint place is closed in the first moment, ensures that filtered liquid will not enter as far as possible
The liquid liquid storage cylinder.And the liquid stream circulation area of bigger can be then obtained in injecting liquid drug.
The valve film support protrusion support floating type check valve film then ensure when liquid is propelled described in lower center lead
Discharge orifice and lower cover through-hole can obtain maximum valid circulation area at work.
The upper cover annular groove and filter membrane support protrusion then ensure that the micron order liquid medicine filtering membrane in filtrate process
It is middle to form enough effective filtration areas.
When propelling liquid, it is contemplated that liquid after flowing through floating type check valve film, it can be unordered quickly poly- to centre
Collection generates turbulent flow phenomenon, not only generates de-stabilising effect to the movement of floating type check valve film, but also may stir impurity, generate
The problems such as bubble, to influence the quality for the liquid propelled out.And under floating type check valve film and the upper center deflector hole
It is open after the central part setting valve membrane filtration through-hole to match, when propelling liquid in the center of floating type check valve film
The liquid for having small flow passes through, and can thus substantially reduce the turbulent flow phenomenon below floating type check valve film, to ensure to push away
Penetrate the quality of liquid.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without having to pay creative labor, may be used also for those of ordinary skill in the art
With obtain other attached drawings according to these attached drawings.
Fig. 1 is the structural schematic diagram of the syringe of efficient-filtering function of the present invention.
Fig. 2 is the partial enlarged view in the portions C in Fig. 1.
Fig. 3 a, Fig. 3 b, Fig. 3 c are superstructure schematic diagram, and wherein Fig. 3 a are schematic top plan view, and Fig. 3 b are the A-A of Fig. 3 a
Sectional view, Fig. 3 c are elevational schematic view.
Fig. 4 a, Fig. 4 b, Fig. 4 c are lower cover structure schematic diagram, and wherein Fig. 4 a are schematic top plan view, and Fig. 4 b are the B-B of Fig. 4 a
Sectional view, Fig. 4 c are elevational schematic view.
Fig. 5 is the structural schematic diagram of micron order liquid medicine filtering membrane.
Fig. 6 is the structural schematic diagram of floating type check valve film.
In figure：
100 nipple of syringe, 101 nipple mesoporous 102
Upper cover 200
Through-hole 203 is drained on upper deflector hole boss 201 in center deflector hole 202
204 filter membrane support protrusion 205 of upper cover annular groove
Lower cover 300
302 valve film support protrusion 303 of lower center 301 lower cover annular groove of deflector hole
304 diversion trench 305 of lower cover through-hole
Liquid liquid storage cylinder 1
Micron order liquid medicine filtering membrane 2
Floating type check valve film 3
Specific implementation mode
With reference to the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described,
Fig. 1, Fig. 2 shows a kind of syringes of efficient-filtering function, including front end to carry the syringe of hollow nipple 101
100 and piston core pin, nipple mesoporous 102 is equipped in nipple 101；The front end of the syringe inner cavity is provided with a filter device,
The inner wall of the filter device surrounding and the syringe 100 matches sealed connection, in the filter device and piston core pin
Between form liquid liquid storage cylinder 1；The filter device includes：The upper cover 200 and lower cover 300 being fixedly connected, the upper cover 200
There is one section of filtrate chamber between lower cover 300；A piece of micron order liquid medicine filtering membrane 2 and a piece of is provided in the filtrate chamber
Floating type check valve film 3.
As shown in Fig. 2, the upper cover 200 and lower cover 300 are mutually fitted and fixed with by tubular edge, the upper cover 200
The lower end outer edge of upper end outer edge and lower cover 300 is each provided with annular resilient evagination, and the outer diameter of the annular resilient evagination is big
In the internal diameter of 100 inner wall of the syringe, when the upper cover 200 and lower cover 300 are installed in place, with the annular resilient evagination
Compressive deformation and achieve the effect that the filter device surrounding and connect with 100 inner wall sealing of the syringe.
In the filtrate chamber, deflector hole boss 201 on one is provided on the lower face of the upper cover 200, described
Upper deflector hole boss 201 is provided centrally with center deflector hole 202 and penetrates through the filtrate chamber and liquid liquid storage cylinder 1, such as schemes
Shown in 3a, 3b, 3c.
The micron order liquid medicine filtering membrane 2 is fixedly installed on the upper cover 200 at the top of the filtrate chamber and described
Lower face is bonded, and is formed and be tightly connected between its edge and the upper cover；300 tubular edge of the lower cover is embedded in described
On the inside of 200 tubular edge of upper cover, the micron order liquid medicine filtering membrane 2 is pressed together on by the tubular edge upper surface of the lower cover 300
On the lower face of the upper cover 200.Uniformly distributed micron filter hole is distributed on the micron order liquid medicine filtering membrane 2；It is described
Upper cover 200 is being provided with upper drainage through-hole 203 with 2 matched position of the micron order liquid medicine filtering membrane, will pass through the micron
Grade 2 filtered liquid of liquid medicine filtering membrane is drained to the liquid liquid storage cylinder 1.
The upper cover 200 is being provided with upper cover annular groove 204 with 2 matched position of the micron order liquid medicine filtering membrane,
It is described micro- to support that the filter membrane support protrusion 205 of 16,2 circle circumferentially is provided in the upper cover annular groove 204
(the filter membrane support protrusion 205 can also be the structure type of other numbers and form to meter level liquid medicine filtering membrane 2 certainly, only
Want to play the role of supporting filter membrane, ensure enough filtrate channels), the upper drainage through-hole 203 is set to the upper cover
Position in annular groove 204 is 8 kidney ellipsoid through-holes radially extended, naturally it is also possible to be set as other conventional knots
Configuration formula.
The floating type check valve film 3 is set between the upper deflector hole boss 201 and lower cover 300, described floating
The upper surface of dynamic formula check valve film 3 and the lower face shape of the upper deflector hole boss 201 match, the floating type check valve
Film 3 can be moved up and down between the upper deflector hole boss 201 and lower cover 300 to play closing and open described floating type unidirectional
The effect of valve film 3 and the fluid course of upper 201 matching part of deflector hole boss, when the floating type check valve film 3 and upper water conservancy diversion
The lower face of hole boss 201 can seal the fluid course closed at this when fitting.
The outer ring portion for being more than the 202 under shed diameter of upper center deflector hole in 3 diameter of floating type check valve film is set
Several fluid courses are equipped with to circulate in order to which liquid extracts；As shown in fig. 6, being somebody's turn to do in floating type check valve film 3 in the present embodiment
Fluid course is four upper and lower cavities for being uniformly arranged the rectangular slot in periphery, penetrating through floating type check valve film 3, certain liquid
Circulation road can also be other conventionally forms, for example open up several diameter through hole etc..
The lower cover 300 is provided with lower drainage channel, the lower drainage channel perforation filtrate chamber and breast
Head mesoporous 102；When syringe extracts liquid, the liquid flow through the lower drainage Tong Hou roads can hold up it is described floating type unidirectional
Valve film 3 so that the liquid stream that the floating type check valve film 3 moves up and is bonded the upper deflector hole boss 201, sealing is closed at this is logical
Road makes the liquid enter the liquid liquid storage through the upper drainage through-hole 203 after the micron order liquid medicine filtering membrane 2 filtering
Chamber 1；When injection liquid, the floating type check valve film 3, which moves down, is supported in the lower cover 300,1 liquid of liquid liquid storage cylinder
Through the upper center deflector hole 201,2 outer ring portion of the floating type check valve film fluid course after, through the lower drainage channel
It is discharged into the nipple mesoporous 102.
As shown in Fig. 4 a, 4b, 4c, the lower drainage channel of the lower cover 300 includes：Lower cover 300 is provided centrally with lower center
Deflector hole 301 penetrates through the filtrate chamber and nipple mesoporous 102；It is arranged with 3 matched position of the floating type check valve film
Have lower cover annular groove 302, in the lower cover annular groove 302 be provided with 16,2 circle circumferentially valve film support it is convex
Rise 303, with support the floating type check valve film 3 (certainly, the filter membrane support protrusion 303 can also be other numbers and
The structure type of form, as long as can play the role of supporting valve film, ensure enough medicine liquid channels).
When the floating type check valve film 3 moves down, it is supported in the valve film support protrusion 303 of the lower cover 300；It is described
Lower cover 300 is provided with circulation of several lower cover through-holes 304 in order to filtrate in 302 position of lower cover annular groove, and lower cover is logical
Hole 304 is 8 kidney ellipsoid through-holes radially extended, naturally it is also possible to be set as other conventional structure types；The lower cover
The bottom surface of 300 lower faces and 100 inner cavity of the syringe fits, in the lower cover through-hole on the lower face of the lower cover 300
The connection of diversion trench 305 is provided between 304 and lower center deflector hole 301.
The lower drainage channel of above-mentioned lower cover 300 can also be other conventional structure types, if its can penetrate through it is described
Filtrate chamber and nipple mesoporous 102；When extracting liquid, the liquid, which flows through the lower roads drainage Tong Hou, can hold up described float
Dynamic formula check valve film 3；When injection liquid, the floating type check valve film 3, which moves down, is supported in the lower cover 300, the liquid
The nipple mesoporous 102 can be smoothly discharged by the lower drainage channel；For example it is not provided with lower center deflector hole 301 etc..
The central part that the floating type check valve film 3 matches with upper 202 under shed of center deflector hole is provided with
If dryvalve membrane filtration through-hole, the valve membrane filtration through-hole is nanofiltration through-hole.It neither influences to extract so floating when liquid
Mobile float under liquid promotion of dynamic formula check valve film 3 closes floating type check valve film 3 and upper 201 matching part of deflector hole boss
Fluid course, and can by 3 central part of floating type check valve film filter through-hole enter upper center deflector hole 202, liquid liquid storage
The liquid of chamber is also the clean liquid by fine filtering；Simultaneously in liquid medicine injection, due to 3 central part of floating type check valve film
Filtering through-hole can allow for a part of liquid to pass through, and can mitigate liquid by the turbulent flow phenomenon after floating type check valve film 3, subtract
The possibility of small impurity and minute bubbles stablizes the movement of floating type check valve film 3, stablizes the process of injecting liquid drug.
Certain above-mentioned valve membrane filtration through-hole can also be micron filter through-hole.Or due to design requirement or due to other
The setting of structural parameters need not optimize the reasons such as the process of propelling by valve membrane filtration through-hole, can also be in floating type check valve
Film 3 is not provided with valve membrane filtration through-hole with the central part that upper 202 under shed of center deflector hole matches.
Although the present invention is disclosed as above with preferred embodiment, however, it is not to limit the invention, any this field skill
Art personnel, without departing from the spirit and scope of the present invention, when can make a little modification and it is perfect, therefore the present invention protection model
It encloses to work as and is subject to what claims were defined.
Claims (4)
1. a kind of syringe of efficient-filtering function, including front end carry the syringe and piston core pin of hollow nipple, set in nipple
There is nipple mesoporous；It is characterized in that：The front end of the syringe inner cavity is provided with a filter device, the filter device surrounding
Match sealed connection with the inner wall of the syringe, forms liquid liquid storage cylinder between the filter device and piston core pin；Institute
Stating filter device includes：The upper cover and lower cover being fixedly connected have one section of filtrate chamber between the upper cover and lower cover；In the mistake
It is provided with a piece of micron order liquid medicine filtering membrane and a piece of floating type check valve film in filter cavity；
In the filtrate chamber, deflector hole boss on one is provided on the lower face of the upper cover, it is convex in the upper deflector hole
Platform is provided centrally with center deflector hole and penetrates through the filtrate chamber and liquid liquid storage cylinder；
The micron order liquid medicine filtering membrane is fixedly installed on the upper cover lower end face paste at the top of the filtrate chamber and described
It closes, and is formed and be tightly connected between its edge and the upper cover；It is distributed on the micron order liquid medicine filtering membrane uniformly distributed
Micron filter hole；The upper cover is being provided with upper drainage through-hole with the matched position of micron order liquid medicine filtering membrane, will be through
It crosses the filtered liquid of micron order liquid medicine filtering membrane and is drained to the liquid liquid storage cylinder；
The floating type check valve film is set between the upper deflector hole boss and lower cover, the floating type check valve film
Upper surface and the lower face shape of the upper deflector hole boss match, the floating type check valve film can be in the upper water conservancy diversion
It is moved up and down between hole boss and lower cover to play closing and open the floating type check valve film and upper deflector hole boss phase
The effect of fluid course with place can be sealed when the floating type check valve film and the lower face of upper deflector hole boss fit
Close the fluid course at this；It is more than the outer of the upper center deflector hole under shed diameter in the floating type check valve film diameter
Circle portion is provided with several fluid courses and circulates in order to which liquid extracts；
The lower cover is provided with lower drainage channel, the lower drainage channel perforation filtrate chamber and nipple mesoporous；
When extracting liquid, the liquid, which flows through the lower roads drainage Tong Hou, can hold up the floating type check valve film so that described
Floating type check valve film moves up and is bonded the upper deflector hole boss, the fluid course at this is closed in sealing, makes the liquid through institute
It states and enters the liquid liquid storage cylinder through the upper drainage through-hole after micron order medical filtration membrane filtration；It is described when injection liquid
Floating type check valve film, which moves down, is supported in the lower cover, and the liquid liquid storage cylinder liquid is through the upper center deflector hole, described floating
After the fluid course in dynamic formula check valve film outer ring portion, the nipple mesoporous is discharged into through the lower drainage channel.
2. the syringe of efficient-filtering function as described in claim 1, it is characterised in that：
The lower drainage channel of the lower cover includes：Lower cover is provided centrally with lower center deflector hole and penetrates through the filtrate chamber and nipple
Mesoporous；The floating type matched position of check valve film is being provided with lower cover annular groove, in the lower cover annular groove
If being provided with dryvalve film support protrusion, when the floating type check valve film moves down, the valve film support for being supported in the lower cover is convex
On rising；The lower cover is provided with circulation of several lower cover through-holes in order to filtrate in lower cover annular groove position；Under described
Lid lower face and the bottom surface of the syringe inner cavity fit, and are led in the lower cover through-hole and lower center on the lower face of the lower cover
Diversion trench connection is provided between discharge orifice；
The upper cover is being provided with upper cover annular groove with the matched position of micron order liquid medicine filtering membrane, in the upper bezel ring,
Several filter membrane support protrusions are provided in connected in star to support the micron order liquid medicine filtering membrane, the upper drainage through-hole to be set to
Position in the upper cover annular groove.
3. the syringe of efficient-filtering function as claimed in claim 1 or 2, it is characterised in that：The floating type check valve
If film is provided with dryvalve membrane filtration through-hole with the central part that the upper center deflector hole under shed matches.
4. the syringe of efficient-filtering function as claimed in claim 3, it is characterised in that：The valve membrane filtration through-hole is to receive
Meter level filters through-hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810233597.2A CN108295341A (en) | 2018-03-21 | 2018-03-21 | A kind of syringe of efficient-filtering function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810233597.2A CN108295341A (en) | 2018-03-21 | 2018-03-21 | A kind of syringe of efficient-filtering function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108295341A true CN108295341A (en) | 2018-07-20 |
Family
ID=62850535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810233597.2A Pending CN108295341A (en) | 2018-03-21 | 2018-03-21 | A kind of syringe of efficient-filtering function |
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| Country | Link |
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| CN (1) | CN108295341A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110812605A (en) * | 2019-12-08 | 2020-02-21 | 湖南平安医械科技有限公司 | Precise filtering injector |
Citations (9)
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