CN103736174A - Two-way filtration syringe - Google Patents
Two-way filtration syringe Download PDFInfo
- Publication number
- CN103736174A CN103736174A CN201410036210.6A CN201410036210A CN103736174A CN 103736174 A CN103736174 A CN 103736174A CN 201410036210 A CN201410036210 A CN 201410036210A CN 103736174 A CN103736174 A CN 103736174A
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- CN
- China
- Prior art keywords
- needle stand
- fluid passage
- valves
- check
- syringe
- 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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Classifications
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- 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
- 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
- A61M2005/3128—Incorporating one-way valves, e.g. pressure-relief or non-return valves
Abstract
The invention discloses a two-way filtration syringe comprising a syringe body and a filtration needle. The needle is composed of a needle tube and a needle holder. The needle tube is mounted at the front end of an upper needle holder, the rear end of a lower needle holder is connected to a tapered head of the syringe body, the front end of the lower needle holder is connected with the upper needle holder to form a suction inlet and an injection outlet, the lower needle holder is provided with a check valve, the check valve opens in a suctioning direction of the suction inlet and an injecting direction of the injection outlet, and both the suction inlet and the injection outlet are provided with filters. The two-way filtration syringe has such advantages that the structure is simple, operation is facilitated, the syringe is safe and reliable, cost is low, the syringe is disposable and cross infection can be effectively avoided.
Description
Technical field
The present invention relates to syringe, specifically a kind of bi-directional filtered 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, have 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 the bi-directional filtered type syringe of changing syringe needle.
Technical scheme of the present invention is: a kind of bi-directional filtered 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, 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 imbibition entrance and injection outlet, filter is all 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.
Described Connection Block top edges is provided with the edge lug boss of an annular, boss in the middle of outside column type fluid passage and edge lug boss corresponding section is provided with, on imbibition filter membrane welding edge boss and middle boss, imbibition filter membrane is except welding portion, the upper needle stand of remainder discord contacts with lower needle stand, form vacant state, improved effective filtration area.
The lower needle stand at the place, bottom of described cylinder fluid passage is provided with an annular groove, and injection filter membrane is welded in annular groove.
The invention has the beneficial effects as follows that filtration and injection process carry out through two autonomous channels, do not need to change syringe needle, avoided bacterial infection and virus and cross-contamination.Take out all filtering liquid medicines of medicine and when injection simultaneously, both filtered the impurity in medicinal liquid, also filtered the impurity existing in syringe.That bi-directional filtered syringe of the present invention has overall structure is simple, easy to operate, safe and reliable, cost is low, disposable use, can effectively avoid the advantages such as cross infection generation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the bi-directional filtered type syringe of the present invention.
Fig. 2 is the decomposition texture schematic diagram of the needle stand of the bi-directional filtered 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 edge lug boss, 16 middle boss, 17 imbibition filter membranes, 18 annular grooves, 19 injection 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 bi-directional filtered type syringe of the present invention, 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 imbibition entrance 8 and injection outlet 9, filter is all 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 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 end of column type fluid passage 11 is connected by Connection Block 13 with lower needle stand 7, 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.For the ease of defecator is installed, Connection Block 13 top edges are provided with the edge lug boss 15 of an annular, boss 16 in the middle of outside column type fluid passage 11 and edge lug boss 15 corresponding sections are provided with, on imbibition filter membrane 17 welding edge boss 15 and middle boss 16, imbibition filter membrane 17 is except welding portion, the upper needle stand 6 of remainder discord and lower pin 7 seated connections touch, and form vacant state, have improved effective filtration area.
The lower needle stand 7 at the place, bottom of cylinder fluid passage 11 is provided with an annular groove 18, and injection filter membrane 19 is welded in annular groove 18.
As shown in Figure 3, check-valves 10 is when extracting 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 is because of extruding meeting sealing simultaneously; the edge of liquid process umbrella is by imbibition filter membrane 17, and the hole 14 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, through injection filter membrane 19 by cylinder fluid passage 11, enter in needle stand fluid passage through opening 10d, then enters human body by needle tubing 4.
Claims (7)
1. a bi-directional filtered 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 imbibition entrance and injection outlet, filter is all installed.
2. bi-directional filtered 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. bi-directional filtered type syringe according to claim 1 and 2, is characterized in that: described check-valves adopts resilient elastomeric material to make.
4. bi-directional filtered type syringe according to claim 3, is characterized in that: described check-valves adopts silica gel material to make.
5. bi-directional filtered 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. bi-directional filtered type syringe according to claim 2, it is characterized in that: described Connection Block top edges is provided with the edge lug boss of an annular, boss in the middle of outside column type fluid passage and edge lug boss corresponding section is provided with, on imbibition filter membrane welding edge boss and middle boss, imbibition filter membrane is except welding portion, the upper needle stand of remainder discord contacts with lower needle stand, forms vacant state.
7. bi-directional filtered type 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 injection filter membrane is welded in annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410036210.6A CN103736174B (en) | 2014-01-26 | 2014-01-26 | A kind of two-way filtration syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410036210.6A CN103736174B (en) | 2014-01-26 | 2014-01-26 | A kind of two-way filtration syringe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103736174A true CN103736174A (en) | 2014-04-23 |
| CN103736174B CN103736174B (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410036210.6A Active CN103736174B (en) | 2014-01-26 | 2014-01-26 | A kind of two-way filtration syringe |
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| CN (1) | CN103736174B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104524670A (en) * | 2015-01-19 | 2015-04-22 | 宣城市江南医疗器械有限公司 | Needle type precise filtering and medicine dissolving syringe |
| CN106334235A (en) * | 2016-09-21 | 2017-01-18 | 山东威高集团医用高分子制品股份有限公司 | Filter needle head |
| CN106345017A (en) * | 2016-10-14 | 2017-01-25 | 山东威高集团医用高分子制品股份有限公司 | Two-way filtering injection needle head |
| CN106362254A (en) * | 2016-10-14 | 2017-02-01 | 山东威高集团医用高分子制品股份有限公司 | Bidirectional filter syringe needle |
| 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 (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4332249A (en) * | 1980-08-01 | 1982-06-01 | Sherwood Medical Industries, Inc. | Filter and valve assembly for hypodermic syringe |
| CN201286910Y (en) * | 2008-11-17 | 2009-08-12 | 大连医科大学附属第二医院 | Disposable double filter-needles syringe/dispensation device |
| WO2010013868A1 (en) * | 2008-07-28 | 2010-02-04 | Kang-Koo Kang | Safety filter tip for a syringe |
| CN103492009A (en) * | 2011-04-08 | 2014-01-01 | 佳迈特股份有限公司 | Filter needle |
| CN103511685A (en) * | 2012-06-27 | 2014-01-15 | 伯尔拉工业有限公司 | One-way valve for medical lines |
| CN203694265U (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 | Bidirectional filtering type injector |
-
2014
- 2014-01-26 CN CN201410036210.6A patent/CN103736174B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4332249A (en) * | 1980-08-01 | 1982-06-01 | Sherwood Medical Industries, Inc. | Filter and valve assembly for hypodermic syringe |
| WO2010013868A1 (en) * | 2008-07-28 | 2010-02-04 | Kang-Koo Kang | Safety filter tip for a syringe |
| CN201286910Y (en) * | 2008-11-17 | 2009-08-12 | 大连医科大学附属第二医院 | Disposable double filter-needles syringe/dispensation device |
| CN103492009A (en) * | 2011-04-08 | 2014-01-01 | 佳迈特股份有限公司 | Filter needle |
| CN103511685A (en) * | 2012-06-27 | 2014-01-15 | 伯尔拉工业有限公司 | One-way valve for medical lines |
| CN203694265U (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 | Bidirectional filtering type injector |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104524670A (en) * | 2015-01-19 | 2015-04-22 | 宣城市江南医疗器械有限公司 | Needle type precise filtering and medicine dissolving syringe |
| CN106334235A (en) * | 2016-09-21 | 2017-01-18 | 山东威高集团医用高分子制品股份有限公司 | Filter needle head |
| CN106345017A (en) * | 2016-10-14 | 2017-01-25 | 山东威高集团医用高分子制品股份有限公司 | Two-way filtering injection needle head |
| CN106362254A (en) * | 2016-10-14 | 2017-02-01 | 山东威高集团医用高分子制品股份有限公司 | Bidirectional filter syringe needle |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103736174B (en) | 2015-12-02 |
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