CN103721322A - Filtering syringe - Google Patents
Filtering syringe Download PDFInfo
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- CN103721322A CN103721322A CN201410036208.9A CN201410036208A CN103721322A CN 103721322 A CN103721322 A CN 103721322A CN 201410036208 A CN201410036208 A CN 201410036208A CN 103721322 A CN103721322 A CN 103721322A
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- needle stand
- syringe
- valves
- check
- needle
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Abstract
The invention discloses a filtering syringe which comprises a syringe and a filtering needle, wherein the needle is composed of a needle tube and needle beds, the needle tube is arranged at the front end of an upper needle bed, the rear end of a lower needle bed is connected to a conical head of the syringe, the front end of the lower needle bed and the upper needle bed are combined so as to form an imbibing inlet and an injection outlet, the lower needle bed is provided with a check valve, the check valve is opened in the imbibing direction of the imbibing inlet and the injection direction of the injection outlet, and the injection outlet is provided with a filter. The syringe disclosed by the invention is simple in overall structure, easy to operate, safe and reliable, low in cost and disposable in use, and can effectively reduce the drug impurities and cross infection risks.
Description
Technical field
The present invention 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 cutting 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, during 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 object of this invention is 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.
Technical scheme of the present invention is: a kind of filter-type syringe, comprise syringe and filter entry needle, described entry needle is comprised 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 extends upward and forms 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 place, bottom of described cylinder fluid passage is provided with an annular groove, and filter membrane is welded in annular groove.
The invention has the beneficial effects as follows: the filtration of filter-type syringe and injection process carry out automatically, only filtering liquid medicine when 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 invention 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 filter-type syringe of the present invention.
Fig. 2 is the decomposition texture schematic diagram of the needle stand of filter-type syringe of the present invention.
Fig. 3 is the present invention's flow direction schematic diagram in needle stand while extracting medicinal liquid.
Flow direction schematic diagram in needle stand when Fig. 4 is liquid medicine injection of the present invention.
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, the invention will be 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 comprised 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 extends upward and forms 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 when extracting medicinal liquid, during 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.When 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 place, bottom 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 when 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 when 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 enter in needle stand fluid passage through opening 10d through filter membrane 16 by cylinder fluid passage 11, 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 comprised 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 extends upward and forms 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. filtration syringe according to claim 3, is characterized in that: described check-valves adopts silica gel material to make.
5. filtration 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. filtration syringe according to claim 2, is characterized in that: the lower needle stand at the place, bottom 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 |
|---|---|---|---|
| CN201410036208.9A CN103721322A (en) | 2014-01-26 | 2014-01-26 | Filtering syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410036208.9A CN103721322A (en) | 2014-01-26 | 2014-01-26 | Filtering syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103721322A true CN103721322A (en) | 2014-04-16 |
Family
ID=50445779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410036208.9A Pending CN103721322A (en) | 2014-01-26 | 2014-01-26 | Filtering syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103721322A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105126207A (en) * | 2015-10-16 | 2015-12-09 | 江西洪达医疗器械集团有限公司 | Precision-filtering injection needle |
| CN105708693A (en) * | 2016-03-30 | 2016-06-29 | 王高松 | Filter needle for injector |
| CN106038287A (en) * | 2015-04-17 | 2016-10-26 | 高钟元 | Disposable syringe having safety filter function |
| CN106390240A (en) * | 2016-10-14 | 2017-02-15 | 山东威高集团医用高分子制品股份有限公司 | Filtering injection needle |
| CN106390242A (en) * | 2016-10-14 | 2017-02-15 | 山东威高集团医用高分子制品股份有限公司 | Filtering and injection syringe needle |
| CN108025140A (en) * | 2015-11-30 | 2018-05-11 | 崔荣哲 | Syringe filtering assembly and syringe and transfusion device assembly |
| CN108295340A (en) * | 2018-02-26 | 2018-07-20 | 上海振浦医疗设备有限公司 | A kind of syringe with fine filtering function |
| CN108295341A (en) * | 2018-03-21 | 2018-07-20 | 上海振浦医疗设备有限公司 | A kind of syringe of efficient-filtering function |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3938513A (en) * | 1974-01-03 | 1976-02-17 | Hargest Thomas S | Syringe filter and valve combination |
| US4332249A (en) * | 1980-08-01 | 1982-06-01 | Sherwood Medical Industries, Inc. | Filter and valve assembly for hypodermic syringe |
| CN103492009A (en) * | 2011-04-08 | 2014-01-01 | 佳迈特股份有限公司 | Filter needle |
| CN203694267U (en) * | 2014-01-26 | 2014-07-09 | 山东威高集团医用高分子制品股份有限公司 | Filtration injector |
-
2014
- 2014-01-26 CN CN201410036208.9A patent/CN103721322A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3938513A (en) * | 1974-01-03 | 1976-02-17 | Hargest Thomas S | Syringe filter and valve combination |
| US4332249A (en) * | 1980-08-01 | 1982-06-01 | Sherwood Medical Industries, Inc. | Filter and valve assembly for hypodermic syringe |
| CN103492009A (en) * | 2011-04-08 | 2014-01-01 | 佳迈特股份有限公司 | Filter needle |
| CN203694267U (en) * | 2014-01-26 | 2014-07-09 | 山东威高集团医用高分子制品股份有限公司 | Filtration injector |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106038287A (en) * | 2015-04-17 | 2016-10-26 | 高钟元 | Disposable syringe having safety filter function |
| CN106038287B (en) * | 2015-04-17 | 2018-10-19 | 高钟元 | disposable syringe with safety filtering function |
| CN105126207A (en) * | 2015-10-16 | 2015-12-09 | 江西洪达医疗器械集团有限公司 | Precision-filtering injection needle |
| CN108025140A (en) * | 2015-11-30 | 2018-05-11 | 崔荣哲 | Syringe filtering assembly and syringe and transfusion device assembly |
| CN105708693A (en) * | 2016-03-30 | 2016-06-29 | 王高松 | Filter needle for injector |
| CN106390240A (en) * | 2016-10-14 | 2017-02-15 | 山东威高集团医用高分子制品股份有限公司 | Filtering injection needle |
| CN106390242A (en) * | 2016-10-14 | 2017-02-15 | 山东威高集团医用高分子制品股份有限公司 | Filtering and injection syringe needle |
| CN108295340A (en) * | 2018-02-26 | 2018-07-20 | 上海振浦医疗设备有限公司 | A kind of syringe with fine filtering function |
| CN108295341A (en) * | 2018-03-21 | 2018-07-20 | 上海振浦医疗设备有限公司 | A kind of syringe of efficient-filtering function |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140416 |