CN203694267U - Filtration injector - Google Patents
Filtration injector Download PDFInfo
- Publication number
- CN203694267U CN203694267U CN201420048483.8U CN201420048483U CN203694267U CN 203694267 U CN203694267 U CN 203694267U CN 201420048483 U CN201420048483 U CN 201420048483U CN 203694267 U CN203694267 U CN 203694267U
- Authority
- CN
- China
- Prior art keywords
- filter
- needle stand
- valves
- needle
- check
- 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 - Lifetime
Links
- 238000001914 filtration Methods 0.000 title abstract description 10
- 238000002347 injection Methods 0.000 claims abstract description 38
- 239000007924 injection Substances 0.000 claims abstract description 38
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 239000012530 fluid Substances 0.000 claims description 27
- 238000005213 imbibition Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 5
- 239000012528 membrane Substances 0.000 claims description 5
- 241001149930 Protura <class> Species 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000741 silica gel Substances 0.000 claims description 4
- 229910002027 silica gel Inorganic materials 0.000 claims description 4
- 239000013536 elastomeric material Substances 0.000 claims description 3
- 239000003814 drug Substances 0.000 abstract description 6
- 206010011409 Cross infection Diseases 0.000 abstract description 2
- 206010029803 Nosocomial infection Diseases 0.000 abstract description 2
- 239000012535 impurity Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 241000700605 Viruses Species 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 241001411320 Eriogonum inflatum Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 229910001651 emery Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 208000001297 phlebitis Diseases 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a filtration injector which comprises an injector body and a filtration injection needle. The injection needle is composed of a needle tube and needle bases. The needle tube is installed at the front end of the upper needle base. The rear end of the lower needle base is connected to a cone head of the injector body. The front end of the lower needle base and the upper needle base are combined to form a liquid suction inlet and an injection outlet. A check valve is installed on the lower needle base. The check valve is opened in the liquid suction direction of the liquid suction inlet and the injection direction of the injection outlet. A filter is installed on the injection outlet. The filtration injector is simple in overall structure, convenient to operate, safe, reliable, low in cost, disposable and capable of effectively reducing medicine impurities and the risk of cross infection.
Description
Technical field
This utility model relates to syringe, specifically a kind of filter-type syringe.
Background technology
As everyone knows, the injection of current clinical use is encapsulated in vial more, and when pricking rubber stopper or cut vial extraction medicinal liquid with emery wheel with the syringe needle of syringe, bottle stopper material bits or glass powder can enter in injection.Traditional syringe does not have filtering function, when extracting liquid medicine, these impurity can be extracted in syringe and direct injection to patient, thereby bring out the diseases such as inflammation of vein.Chinese invention patent application CN102600535A, a kind of entry needle with accurate filter is disclosed, comprise needle tubing and the needle stand with inner via hole, described needle stand inner via hole comprises compare little top, aperture, compare great bottom, aperture and has the pars intermedia of upwards bringing gradually reduced bore structure together, described needle tubing one end is placed in the top of described inner via hole, is provided with a filter in the inner via hole of described needle stand.Because this entry needle feed pathway and liquid outlet channel are same passages, after filtration, need again to change injection needle, but in filtering needle and injection needle Renewal process, exist by the risk of the pollution of antibacterial or virus, clinical manipulation is also inconvenient simultaneously.
Summary of the invention
The purpose of this utility model be to provide a kind of simple in structure, can effectively realize filtering function and when injection without a kind of filter-type syringe of changing syringe needle.
The technical solution of the utility model is: a kind of filter-type syringe, comprise syringe and filter entry needle, described entry needle is made up of needle tubing and needle stand, needle tubing is arranged on the front end of needle stand, the rear end of lower needle stand is connected on the conehead of syringe, and the front end of lower needle stand is combined with upper needle stand and is formed imbibition entrance and injection outlet, on lower needle stand, check-valves is installed, check-valves is opened in the imbibition direction of imbibition entrance and the injection direction of injection outlet, in injection outlet, filter is installed.
As a kind of preferred structure, the mid portion of lower needle stand upper end upwards extends to form column type fluid passage, this fluid passage becomes injection outlet, injection outlet is around liquid inlet, check-valves is umbrella-shaped structure, and check-valves center has a fixed cover to be enclosed within the outside of column type fluid passage, between the top of check-valves umbrella top and column type fluid passage, forms spatia, one opening is arranged at umbrella top, and edge extends to form flap structure downwards.
Described check-valves adopts the good elastomeric material of elasticity, preferably silica gel material.
The lower end of described column type fluid passage is connected by Connection Block with lower needle stand, has hole on Connection Block, forms liquid inlet.
The lower needle stand at the bottom place of described cylinder fluid passage is provided with an annular groove, and filter membrane is welded in annular groove.
The beneficial effects of the utility model are: the filtration of filter-type syringe and injection process carry out automatically, and only filtering liquid medicine in the time of injection, need not filter while taking out medicine, does not need to change syringe needle, the probability of having avoided antibacterial and virus to pollute.That automatic fitration syringe of the present utility model has overall structure is simple, easy to operate, safe and reliable, cost is low, disposable use, effectively avoid the advantages such as cross infection generation.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model filter-type syringe.
Fig. 2 is the decomposition texture schematic diagram of the needle stand of this utility model filter-type syringe.
Flow direction schematic diagram in needle stand when Fig. 3 is this utility model extraction medicinal liquid.
Flow direction schematic diagram in needle stand when Fig. 4 is this utility model liquid medicine injection.
1 syringe in figure, 2 coneheads, 3 entry needles, 4 needle tubings, 5 needle stands, needle stand on 6,7 times needle stands, 8 imbibition entrances, 9 injection outlets, 10 check-valves, 10a fixed cover, 10b umbrella top, 10c flap structure, 10d opening, 11 column type fluid passages, 12 spatias, 13 Connection Blocks, 14 holes, 15 annular grooves, 16 filter membranes.
The specific embodiment
Below in conjunction with accompanying drawing, this utility model is further described.
From Fig. 1-Fig. 4, can find out, a kind of automatic fitration syringe, comprise syringe 1 and entry needle 3, described entry needle 3 is made up of needle tubing 4 and needle stand 5, needle tubing 4 is arranged on the front end of needle stand 6, the rear end of lower needle stand 7 is connected on the conehead 2 of syringe 1, the front end of lower needle stand 7 and upper needle stand 6 are in conjunction with forming imbibition entrance 8 and injection outlet 9, on lower needle stand 7, check-valves 10 is installed, check-valves 10 is opened in the imbibition direction of imbibition entrance and the injection direction of injection outlet, in injection outlet 9, filter is installed.
As Fig. 2, shown in Fig. 3 and Fig. 4, the mid portion of lower needle stand 7 upper ends upwards extends to form column type fluid passage 11, this fluid passage becomes injection outlet 9, injection outlet 9 is around liquid inlet 8, check-valves 10 is umbrella-shaped structure, check-valves 10 centers have a fixed cover 10a to be enclosed within the outside of column type fluid passage 11, between the top of check-valves umbrella top 10b and column type fluid passage 11, form spatia 12, umbrella top 10b has an opening 10d, spatia 12 is conducive to umbrella top 10b and produces distortion, shutoff opening 10d in the time extracting medicinal liquid, when injection liquid, strut opening 10d, edge extends to form flap structure 10c downwards, flap structure 10c be similar to skirt the bottom, its inside provides enough spaces for fixed cover 10a, make the outer surface fitting area of fixed cover 10a and column type fluid passage 11 large, the two laminating closely, avoid the medicinal liquid in syringe to pass through from binding face.Flap structure 10c can receive in fixed cover 10a direction, the smooth and easy inflow syringe of medicinal liquid that guiding sucks.In the time of injection liquid, flap structure 10c can open in addition, with upper needle stand 6 internal chamber wall interference fit, shutoff imbibition entrance, guarantees that liquid flows out through injection outlet.
Check-valves 10 adopts the good elastomeric material of elasticity, preferably silica gel material.Silica gel material elasticity is large, morphotropism good, can meet the demand of opening passage and closed channel.
The lower needle stand 7 at the bottom place of cylinder fluid passage 11 is provided with an annular groove 15, and filter membrane 16 is welded in annular groove 15.The lower end of column type fluid passage 11 is connected by Connection Block 13 with lower needle stand, has hole 14 on Connection Block, forms liquid inlet, and Connection Block 13 can be cross structure as shown in FIG., can be also that other are convenient to the structure connecting.
As shown in Figure 3, check-valves 10 is in the time of extraction medicinal liquid, under negative pressure and fluid pressure effect; umbrella limit is that flap structure 10c can shrink formation fluid passage; the opening 10d of umbrella top 10b can seal because of extruding simultaneously, and the hole 14 of the edge of liquid process umbrella on Connection Block, enters in syringe 1; As shown in Figure 4, check-valves 10 is in the time of liquid medicine injection, under fluid pressure effect; umbrella limit is that flap structure 10c can open and shuts fluid passage; the opening 10d of umbrella top 10b can open formation fluid passage under pressure; liquid can, through filter membrane 16 by cylinder fluid passage 11, enter in needle stand fluid passage through opening 10d, then enters human body by needle tubing 4.
Claims (6)
1. a filter-type syringe, comprise syringe and filter entry needle, described entry needle is made up of needle tubing and needle stand, needle tubing is arranged on the front end of needle stand, the rear end of lower needle stand is connected on the conehead of syringe, it is characterized in that: the front end of lower needle stand is combined with upper needle stand and is formed imbibition entrance and injection outlet, on lower needle stand, check-valves is installed, check-valves is opened in the imbibition direction of imbibition entrance and the injection direction of injection outlet, in injection outlet, filter is installed.
2. filter-type syringe according to claim 1, it is characterized in that: the mid portion of lower needle stand upper end upwards extends to form column type fluid passage, this fluid passage becomes injection outlet, injection outlet is around liquid inlet, check-valves is umbrella-shaped structure, and check-valves center has a fixed cover to be enclosed within the outside of column type fluid passage, between the top of check-valves umbrella top and column type fluid passage, forms spatia, one opening is arranged at umbrella top, and edge extends to form flap structure downwards.
3. filter-type syringe according to claim 1 and 2, is characterized in that: described check-valves adopts resilient elastomeric material to make.
4. filter-type syringe according to claim 3, is characterized in that: described check-valves adopts silica gel material to make.
5. filter-type syringe according to claim 2, is characterized in that: the lower end of described column type fluid passage is connected by Connection Block with lower needle stand, has hole on Connection Block, forms liquid inlet.
6. filter-type syringe according to claim 2, is characterized in that: the lower needle stand at the bottom place of described cylinder fluid passage is provided with an annular groove, and filter membrane is welded in annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420048483.8U CN203694267U (en) | 2014-01-26 | 2014-01-26 | Filtration injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420048483.8U CN203694267U (en) | 2014-01-26 | 2014-01-26 | Filtration injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203694267U true CN203694267U (en) | 2014-07-09 |
Family
ID=51044774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420048483.8U Expired - Lifetime CN203694267U (en) | 2014-01-26 | 2014-01-26 | Filtration injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203694267U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103721322A (en) * | 2014-01-26 | 2014-04-16 | 山东威高集团医用高分子制品股份有限公司 | Filtering syringe |
| CN104546459A (en) * | 2015-01-19 | 2015-04-29 | 宣城市江南医疗器械有限公司 | Needle type syringe with function of accurately filtering dissolved drug |
-
2014
- 2014-01-26 CN CN201420048483.8U patent/CN203694267U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103721322A (en) * | 2014-01-26 | 2014-04-16 | 山东威高集团医用高分子制品股份有限公司 | Filtering syringe |
| CN104546459A (en) * | 2015-01-19 | 2015-04-29 | 宣城市江南医疗器械有限公司 | Needle type syringe with function of accurately filtering dissolved drug |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140709 |
|
| CX01 | Expiry of patent term |