CN208552725U - A kind of medical fluid injector of built-in accurate filter - Google Patents
A kind of medical fluid injector of built-in accurate filter Download PDFInfo
- Publication number
- CN208552725U CN208552725U CN201720948506.4U CN201720948506U CN208552725U CN 208552725 U CN208552725 U CN 208552725U CN 201720948506 U CN201720948506 U CN 201720948506U CN 208552725 U CN208552725 U CN 208552725U
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- China
- Prior art keywords
- filter
- floating plug
- built
- channel
- medical fluid
- 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.)
- Expired - Fee Related
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 44
- 238000007667 floating Methods 0.000 claims abstract description 78
- 239000007924 injection Substances 0.000 claims abstract description 44
- 238000002347 injection Methods 0.000 claims abstract description 44
- 239000007788 liquid Substances 0.000 claims abstract description 41
- 238000001914 filtration Methods 0.000 claims abstract description 15
- 230000000694 effects Effects 0.000 claims abstract description 4
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 239000012528 membrane Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 4
- 239000004677 Nylon Substances 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 210000002445 nipple Anatomy 0.000 claims description 3
- 210000004492 nuclear pore Anatomy 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 229920006267 polyester film Polymers 0.000 claims description 3
- 229920006393 polyether sulfone Polymers 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 2
- 239000003814 drug Substances 0.000 abstract description 11
- 229940079593 drug Drugs 0.000 abstract description 7
- 239000002245 particle Substances 0.000 abstract description 7
- 230000001376 precipitating effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 210000004204 blood vessel Anatomy 0.000 description 3
- 238000001802 infusion Methods 0.000 description 3
- 239000013618 particulate matter Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 208000005189 Embolism Diseases 0.000 description 1
- 206010018691 Granuloma Diseases 0.000 description 1
- 206010061218 Inflammation Diseases 0.000 description 1
- 206010030113 Oedema Diseases 0.000 description 1
- 208000007536 Thrombosis Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000004087 circulation Effects 0.000 description 1
- 210000003743 erythrocyte Anatomy 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002504 physiological saline solution Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model provides a kind of medical fluid injector of built-in accurate filter, comprising: injection tube, injection rod engaged therewith, injection tube front end are built-in with filter device；The filter device includes filter block and the floating plug that is movably arranged on inside filter block, forms filter chamber on the inside of filter block, annular filter film is arranged in filter chamber；When syringe drawing liquid, floating plug is moved to the floating plug channel roof of filter block, and liquid enters filter chamber from the blind hole of floating plug；When syringe drain, floating plug channel roof of the floating plug far from filter block, the liquid of filter chamber enters the blind hole of floating plug by annular filter film, filter block peripheral channel.The syringe is not only at low cost, and filtering safe is easy to use, during dosing, so that it is directly filtered particle and precipitating when preparing liquid, achievees the effect that secondary filter, it is ensured that patient medication safety.
Description
Technical field
The utility model relates to the field of medical instrument technology, in particular to a kind of injecting liquid drug of built-in accurate filter
Device.
Background technique
The conventional syringe clinically used at present, is generally made of plastic needle cylinder, rubber piston and core bar, before core bar
Portion is set in plastic needle cylinder, and the front end of core bar is equipped with rubber piston, is sealed between rubber piston and plastic needle cylinder inner wall.This note
The shortcomings that emitter is: only simple liquid medicine injection does not have the function being filtered to the particulate matter in medical fluid.
With the continuous improvement of modern medicine level and people 's material life level, clinical application particulate matter is to human body
Harm be commonly numerous medical personnels and recognized, while some patientss also by various approach to insoluble micro- in medical fluid
The harm of grain is recognized, they are increasingly enhanced clinical application quality and awareness of safety, it is desirable that also higher and higher.But current state
Inside syringe used in clinic in the market does not have the function of the particulate matter in filtering liquid medicine, a large amount of insoluble in medical fluid
The careless medical fluid of particle is injected together in blood into the human body.It is larger (to be greater than blood vessel diameter, adult is generally 6~8 μm；Children
Especially infant's capillary is typically up to 2~3 μm thinner) particle can directly contribute local circulation obstacle and cause blood vessel bolt
Plug serious person causes local stoppages and for hypoxgia, and histanoxia generates oedema and inflammation；Less than this diameter can be direct with blood flow
It causes thrombus or since foreign matter intrusion tissue causes erythrocyte aggregation to increase volume around particle, causes granuloma, and
Since quantity mostly can equally cause blood vessel embolism.In the present age, especially infant, children accept the risk more greatly, because of human body capillary
Blood vessel is generally 6~8 μm, and children's especially infant's capillary is typically up to thinner 2~3 μm, as one can imagine infant, youngster
Child undertakes great security risk when receiving medication.However can have there is no a kind of syringe of simple possible now and add
Medicine and the function of carrying out medical filtration.
Utility model content
In order to solve the problems existing in the prior art, the utility model provides a kind of injecting liquid drug of built-in accurate filter
Device.The syringe is not only at low cost, and filtering safe is easy to use, during dosing, filters it directly when preparing liquid micro-
Grain and precipitating, achieve the effect that secondary filter, it is ensured that patient medication safety.
In order to achieve the above objectives, the utility model uses following technological means:
A kind of medical fluid injector of built-in accurate filter, comprising: injection tube, injection rod engaged therewith, before injection tube
End is built-in with filter device；The filter device includes filter block and the floating plug that is movably arranged on inside filter block, filter block
Inside forms filter chamber, and annular filter film is arranged in filter chamber；When syringe drawing liquid, the floating plug that floating plug is moved to filter block is logical
At the top of road, liquid enters filter chamber from the blind hole of floating plug；When syringe drain, floating plug is pushed up far from the floating plug channel of filter block
Portion, the liquid of filter chamber enter the blind hole of floating plug by annular filter film, filter block peripheral channel.
The floating plug is boss structure, and its axis is provided with blind hole, be provided on floating plug convex platform side wall with it is blind
The fluid hole and inlet opening of hole connection；Be provided in filter block with the matched floating plug channel of floating plug shape, floating plug channel small end with
Filter chamber connection, filter chamber are provided with annular filter film in addition to floating plug channel small end exports；The company of being additionally provided on filter block
Pass through the liquid outlet channel of filter chamber and floating plug channel big end；When the floating plug shaft shoulder and floating plug channel are adjacent to, blind hole by inlet opening with
Filter chamber connection, fluid hole, liquid outlet channel are in sealing state；When the floating plug shaft shoulder and floating plug path clearance are arranged, blind hole is logical
Cross fluid hole, liquid outlet channel is connected to filter chamber, inlet opening is in sealing state.
The liquid outlet channel is multiple, and is arranged along filter block axis.
The fluid hole and inlet opening is circumferentially uniformly distributed along floating plug.
The injection tube is an integral molding structure with filter device.
The injection tube and filter device is fabricated structure；The size shape and injection tube needle of the filter device
Headstock inner cavity matches, and filter device front end is tapered end, when combination in the insertion needle seat inner cavity of tapered end, and injection tube inner wall
It is tightly connected with filter device.
The filter device rear end is filter end, and filter end inner cavity and the shape of the piston of injection rod front end match.
The annular filter film is nuclear pore membrane, poly (ether sulfone) film, polyester film or nylon membrane.
The annular filter film pore size filter is 1.2~15 microns.
The needle holder of the injection tube is nipple or quick connector.
Opposite and the prior art, the utility model have the advantage that
The injection tube front end of the utility model is built-in with filter device；Injection tube front end is built-in with filter device；Described
Filter device includes filter block and the floating plug that is movably arranged on inside filter block, and when syringe drawing liquid, floating plug is moved to filtering
The floating plug channel roof of block, liquid enter filter chamber from the blind hole at floating plug center, and when syringe drain, floating plug is far from filter block
Floating plug channel roof, the liquid of filter chamber enters the blind hole of floating plug by annular filter film, filter block peripheral channel.To real
Existing drawing liquid does not filter, the function of drain filtering.Filter device built in the utility model does not cause other work to user
Amount, has carried out the filtering of medical fluid while normal use.Not only at low cost, filtering safe is easy to use, during dosing,
Naked eyes, which are not easy the particle found and precipitating, to cause infusion safety hidden in coarse syringe needle injection infusion bottle (bag) of syringe
Suffer from, and filter the problems such as these particles are costly using precision infusion set, it is made directly to filter particle when preparing liquid and sink
It forms sediment, achievees the effect that secondary filter, it is ensured that patient medication safety.
Further, floating plug is boss structure, be provided in filter block with the matched floating plug channel of floating plug shape, when floating plug axis
When shoulder and floating plug channel are adjacent to, blind hole is connected to by inlet opening with filter chamber, and fluid hole, liquid outlet channel are in sealing state；When
When the floating plug shaft shoulder and floating plug path clearance are arranged, blind hole is connected to by fluid hole, liquid outlet channel with filter chamber, and inlet opening is in close
Envelope state.It is compared with common syringe, it is easy to operate, it is easy to use, also there is filtering function.
Further, injection tube is an integral molding structure with filter device, disposable.
Further, the filter device inside injection tube is fabricated structure；It can individually be manufactured when manufacture, when use
It is combined assembly again, it is easy to use convenient for manufacture and transport.
Detailed description of the invention
Fig. 1 is medical fluid precision floating plug filtration syringe schematic diagram；
Fig. 2 is filter device sectional view；
Fig. 3 is floating plug schematic diagram；
Fig. 4 is filter block schematic diagram；
Fig. 5 is filter block along A-A sectional view；
Fig. 6 is filter device schematic diagram；
Wherein, 1 is filter device；2 be injection tube；3 be injection rod；4 be piston；5 be filter end；6 be tapered end；7 are
Floating plug；71 be blind hole；72 be fluid hole, and 73 be inlet opening, and 8 be filter block, and 81 be floating plug channel, and 82 be liquid outlet channel.
Specific embodiment
The utility model is described further in the following with reference to the drawings and specific embodiments, the utility model is not limited to following
Embodiment.
As shown in Figures 1 to 5, a kind of medical fluid injector of built-in accurate filter of the utility model includes: injection tube
2, injection rod 3 engaged therewith, 2 front end of injection tube are built-in with filter device 1；The filter device 1 includes filter block 8 and floats
Plug 7；Floating plug 7 is boss structure, and its axis is provided with blind hole 71, is provided on 7 convex platform side wall of floating plug and connects with blind hole 71
Logical fluid hole 72 and inlet opening 73；It is provided in filter block 8 and the matched floating plug channel 81 of 7 shape of floating plug, 8 inside of filter block
Filter chamber is formed, 81 small end of floating plug channel is connected to filter chamber, and filter chamber is provided in addition to 81 small end of floating plug channel exports
Annular filter film 9；The liquid outlet channel 82 of connection filter chamber and 81 big end of floating plug channel is additionally provided on filter block 8；When 7 axis of floating plug
When shoulder and floating plug channel 81 are adjacent to, blind hole 71 is connected to by inlet opening 73 with filter chamber, and fluid hole 72, liquid outlet channel 82 are in close
Envelope state；When 7 shaft shoulder of floating plug and 81 gap setting of floating plug channel, blind hole 71 passes through fluid hole 72, liquid outlet channel 82 and filtering
Chamber connection, inlet opening 73 are in sealing state.
As shown in figure 3, the fluid hole 72 and inlet opening 73 are circumferential uniformly distributed along floating plug 7.
As shown in figure 5, liquid outlet channel 82 is multiple, and is arranged along 8 axis of filter block.
Injection tube 2 is an integral molding structure with filter device 1.It is clinical disposable.
As shown in Figure 1, injection tube 2 and filter device 1 are fabricated structure；The size shape and injection tube 2 of filter device 1
Needle holder inner cavity matches, and 1 front end of filter device is tapered end 6, when combination in 6 insertion needle seat inner cavity of tapered end, and injects
2 inner walls of cylinder and filter device 1 are tightly connected.1 rear end of filter device is filter end 5,5 inner cavity of filter end and 3 front end of injection rod
The shape of piston 4 matches.
Wherein.Annular filter film 9 is nuclear pore membrane, poly (ether sulfone) film, polyester film or nylon membrane.9 filter hole of annular filter film
Diameter is 1.2~15 microns.
Different syringe needles uses for convenience, and needle holder is nipple or quick connector.
As shown in figures 1 to 6, when the utility model is used, first injection rod 3 is removed from injection tube 2, then filtering is filled
It sets in 1 loading injection tube 2, and is pushed into bottommost, finally injection rod 3 is inserted into injection tube 2, medical fluid configuration can be carried out,
And it is able to carry out medical fluid secondary filter.When pulling injection rod 3 to be displaced outwardly drawing liquid, injection tube 2 generates negative pressure, and medical fluid is in negative pressure
Under the action of enter the blind hole 71 of floating plug 7 from syringe needle, when being adjacent to due to 7 shaft shoulder of floating plug and floating plug channel 81, blind hole 71 by into
Fluid apertures 73 is connected to filter chamber, and fluid hole 72, liquid outlet channel 82 are in sealing state；Medical fluid can only by several blind holes 71, into
Fluid apertures 73, filter chamber connection, carry out drawing liquid and enter in injection tube 2.When extruding injection rod 3 moves inward drain, medical fluid is first passed through
It crosses after annular filter film 9 is filtered, passes through liquid outlet channel 82 and enter the discharge of blind hole 71.Whole operation does not give user
Other workloads are caused, the filtering of medical fluid has been carried out while normal use.
The utility model not only can also be filtered physiological saline, water, chemical reagent etc. with filtering liquid medicine.Structure
Simply, it works well.
More than, the only preferred embodiment of the utility model is not limited only to the scope of the utility model, Fan Yiben
The equivalence changes and modification that the content of utility model patent range is done all should be the technology scope of the utility model.
Claims (10)
1. a kind of medical fluid injector of built-in accurate filter characterized by comprising injection tube (2), injection engaged therewith
Bar (3), injection tube (2) front end are built-in with filter device (1)；The filter device (1) includes filter block (8) and activity setting
Filter chamber is formed on the inside of the internal floating plug (7) of filter block (8), filter block (8), and annular filter film (9) are set in filter chamber；When
When syringe drawing liquid, floating plug (7) is moved at the top of the floating plug channel (81) of filter block (8), blind hole (71) of the liquid from floating plug (7)
Into filter chamber；When syringe drain, floating plug channel (81) top of the floating plug (7) far from filter block (8), the liquid of filter chamber
Enter the blind hole (71) of floating plug (7) by annular filter film (9), filter block (8) peripheral channel；The floating plug (7) is boss
Structure, and be provided with blind hole (71) along its axis, the fluid hole being connected to blind hole (71) is provided on floating plug (7) convex platform side wall
(72) and inlet opening (73)；It is provided in filter block (8) and the matched floating plug channel (81) of floating plug (7) shape, floating plug channel
(81) small end is connected to filter chamber, and filter chamber is provided with annular filter film (9) in addition to floating plug channel (81) small end exports；It crosses
The liquid outlet channel (82) of connection filter chamber and floating plug channel (81) big end is additionally provided on filter block (8).
2. a kind of medical fluid injector of built-in accurate filter according to claim 1, it is characterised in that: when floating plug (7)
When the shaft shoulder and floating plug channel (81) are adjacent to, blind hole (71) is connected to by inlet opening (73) with filter chamber, and fluid hole (72), liquid is logical out
Road (82) is in sealing state；When floating plug (7) shaft shoulder and floating plug channel (81) gap setting, blind hole (71) passes through fluid hole
(72), liquid outlet channel (82) is connected to filter chamber, and inlet opening (73) is in sealing state.
3. a kind of medical fluid injector of built-in accurate filter according to claim 2, it is characterised in that: described goes out liquid
Channel (82) is multiple, and is arranged along filter block (8) axis.
4. a kind of medical fluid injector of built-in accurate filter according to claim 2, it is characterised in that: described goes out liquid
Hole (72) and inlet opening (73) are circumferentially uniformly distributed along floating plug (7).
5. a kind of medical fluid injector of built-in accurate filter according to claim 1, it is characterised in that: the injection
Cylinder (2) is an integral molding structure with filter device (1).
6. a kind of medical fluid injector of built-in accurate filter according to claim 1, it is characterised in that: the injection
Cylinder (2) and filter device (1) are fabricated structure；In the size shape and injection tube (2) needle holder of the filter device (1)
Chamber matches, and filter device (1) front end is tapered end (6), when combination in tapered end (6) insertion needle seat inner cavity, and injection tube
(2) inner wall and filter device (1) are tightly connected.
7. a kind of medical fluid injector of built-in accurate filter according to claim 1, it is characterised in that: the filtering
Device (1) rear end is filter end (5), and filter end (5) inner cavity and the shape of the piston (4) of injection rod (3) front end match.
8. a kind of medical fluid injector of built-in accurate filter according to claim 1, it is characterised in that: the annular
Filter membrane (9) is nuclear pore membrane, poly (ether sulfone) film, polyester film or nylon membrane.
9. a kind of medical fluid injector of built-in accurate filter according to claim 8, it is characterised in that: the annular
Filter membrane (9) pore size filter is 1.2~15 microns.
10. a kind of medical fluid injector of built-in accurate filter according to claim 1, it is characterised in that: the note
The needle holder of shooting cylinder (2) is nipple or quick connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720948506.4U CN208552725U (en) | 2017-07-31 | 2017-07-31 | A kind of medical fluid injector of built-in accurate filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720948506.4U CN208552725U (en) | 2017-07-31 | 2017-07-31 | A kind of medical fluid injector of built-in accurate filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208552725U true CN208552725U (en) | 2019-03-01 |
Family
ID=65444601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720948506.4U Expired - Fee Related CN208552725U (en) | 2017-07-31 | 2017-07-31 | A kind of medical fluid injector of built-in accurate filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208552725U (en) |
-
2017
- 2017-07-31 CN CN201720948506.4U patent/CN208552725U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190301 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |