CN103736174B - A kind of two-way filtration syringe - Google Patents
A kind of two-way filtration syringe Download PDFInfo
- Publication number
- CN103736174B CN103736174B CN201410036210.6A CN201410036210A CN103736174B CN 103736174 B CN103736174 B CN 103736174B CN 201410036210 A CN201410036210 A CN 201410036210A CN 103736174 B CN103736174 B CN 103736174B
- Authority
- CN
- China
- Prior art keywords
- needle stand
- valves
- check
- fluid passage
- imbibition
- 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.)
- Active
Links
- 238000001914 filtration Methods 0.000 title claims abstract description 23
- 238000002347 injection Methods 0.000 claims abstract description 37
- 239000007924 injection Substances 0.000 claims abstract description 37
- 238000005213 imbibition Methods 0.000 claims abstract description 26
- 241001149930 Protura <class> Species 0.000 claims abstract description 5
- 239000012530 fluid Substances 0.000 claims description 30
- 239000007788 liquid Substances 0.000 claims description 23
- 239000012528 membrane Substances 0.000 claims description 13
- 238000003466 welding Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 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
- 206010011409 Cross infection Diseases 0.000 abstract description 2
- 206010029803 Nosocomial infection Diseases 0.000 abstract description 2
- 239000003814 drug Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 208000035143 Bacterial infection Diseases 0.000 description 1
- 241001411320 Eriogonum inflatum Species 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 208000022362 bacterial infectious disease Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012864 cross contamination Methods 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
- 238000000605 extraction 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
- 230000003612 virological effect Effects 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
- 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
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 two-way filtration 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 to form imbibition entrance and inject and exports, and lower needle stand is provided with check-valves, check-valves is opened at the injection direction of the imbibition direction of imbibition entrance and injection outlet, and imbibition entrance and injection outlet are all provided with filter.It is simple that bi-directional filtered syringe has overall structure, easy to operate, safe and reliable, cost is low, single use, can effectively avoid the advantages such as cross infection generation.
Description
Technical field
The present invention relates to syringe, specifically a kind of two-way filtration syringe.
Background technology
As everyone knows, the injection of current Clinical practice is encapsulated in vial more, and when pricking rubber stopper with the syringe needle of syringe or cut vial extraction medicinal liquid with emery wheel, bottle stopper material bits or glass powder can enter in injection.Traditional syringe does not have filtering function, these impurity to be extracted into during extracting liquid medicine in syringe and direct injection to patient, thus bring out the diseases such as inflammation of vein.Chinese invention patent application CN102600535A, disclose a kind of entry needle with accurate filter, comprise needle tubing and the needle stand with inner via hole, described needle stand inner via hole comprises the larger bottom in less top, aperture, aperture and has the pars intermedia upwards collecting reduced bore structure gradually, 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, need after filtration again to change injection needle, but have in filtering needle and injection needle Renewal process 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 structure simple, effectively can realize filtering function and injection time without the need to changing the two-way filtration syringe of syringe needle.
Technical scheme of the present invention is: a kind of two-way filtration 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, the front end of lower needle stand is combined with upper needle stand to form imbibition entrance and inject and exports, lower needle stand is provided with check-valves, check-valves is opened at the injection direction of the imbibition direction of imbibition entrance and injection outlet, and imbibition entrance and injection outlet are all provided with filter.
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, forms spatia between the top of check-valves umbrella top and column type fluid passage, 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, preferred silica gel material.
The lower end of described column type fluid passage is connected by Connection Block with lower needle stand, and Connection Block has hole, forms liquid inlet.
Described Connection Block top edges is provided with the edge lug boss of an annular, outside column type fluid passage and edge lug boss corresponding section is provided with intermediate lands, on imbibition filter membrane welding edge boss and intermediate lands, imbibition filter membrane is except welding portion, the upper needle stand of remainder discord contacts with lower needle stand, form vacant state, improve effective filtration area.
The lower needle stand of the bottom end 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, avoid bacterial infection and viral and cross-contamination.All filtering liquid medicine when simultaneously taking out medicine and injection, had both filtered the impurity in medicinal liquid, had also filtered the impurity existed in syringe.It is simple that bi-directional filtered syringe of the present invention has overall structure, easy to operate, safe and reliable, cost is low, single use, can effectively avoid the advantages such as cross infection generation.
Accompanying drawing explanation
Fig. 1 is the structural representation of two-way filtration syringe of the present invention.
Fig. 2 is the decomposition texture schematic diagram of the needle stand of two-way filtration syringe of the present invention.
Fig. 3 is the present invention's flow direction schematic diagram in needle stand when 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 intermediate lands, 17 imbibition filter membranes, 18 annular grooves, 19 injection filter membranes.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
As can be seen from Fig. 1-Fig. 4, a kind of two-way filtration syringe of the present invention, 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 is combined with upper needle stand 6 and forms imbibition entrance 8 and inject outlet 9, lower needle stand 7 is provided with check-valves 10, check-valves 10 is opened at the injection direction of the imbibition direction of imbibition entrance and injection outlet, and imbibition entrance 8 and injection outlet 9 are all provided with filter.
As Fig. 2, shown in Fig. 3 and Fig. 4, the mid portion of lower needle stand 7 upper end upwards extends to form column type fluid passage 11, this fluid passage becomes injection outlet 9, be liquid inlet 8 around injection outlet 9, check-valves 10 is umbrella-shaped structure, check-valves 10 center has a fixed cover 10a to be enclosed within the outside of column type fluid passage 11, spatia 12 is formed between the top of check-valves umbrella top 10b and column type fluid passage 11, umbrella top 10b has an opening 10d, spatia 12 is conducive to umbrella top 10b and produces distortion, the shutoff opening 10d when extracting medicinal liquid, opening 10d is strutted during injection liquid, edge extends to form flap structure 10c downwards, flap structure 10c be similar to skirt the bottom, it is inner 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, the medicinal liquid in syringe is avoided to pass through from binding face.Flap structure 10c to fixed cover 10a direction adduction, can guide the smooth and easy inflow syringe of medicinal liquid sucked.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, preferred silica gel material.Silica gel material elasticity is large, morphotropism good, can meet the demand 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, Connection Block has hole 14, and form liquid inlet, Connection Block 13 can be cross structure as shown in FIG., also can be the structure that other are convenient to connect.For the ease of installing defecator, Connection Block 13 top edges is provided with the edge lug boss 15 of an annular, outside column type fluid passage 11 and edge lug boss 15 corresponding section is provided with intermediate lands 16, on imbibition filter membrane 17 welding edge boss 15 and intermediate lands 16, imbibition filter membrane 17 is except welding portion, the upper needle stand 6 of remainder discord and lower pin 7 seated connection touch, and form vacant state, improve effective filtration area.
The lower needle stand 7 of the bottom end 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 and flap structure 10c can shrink formation fluid passage; simultaneously the opening 10d of umbrella top 10b can close because of extruding; liquid is through the edge of umbrella 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 and flap structure 10c can open and shut fluid passage; the opening 10d of umbrella top 10b can open formation fluid passage under pressure; liquid through injection filter membrane 19 by cylinder fluid passage 11, can enter in upper needle stand fluid passage through opening 10d, then enter human body by needle tubing 4.
Claims (6)
1. a two-way filtration 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 to form imbibition entrance and inject and exports, lower needle stand is provided with check-valves, check-valves is opened at the injection direction of the imbibition direction of imbibition entrance and injection outlet, imbibition entrance and injection outlet are all provided with filter, 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, check-valves center has a fixed cover to be enclosed within the outside of column type fluid passage, spatia is formed between the top of check-valves umbrella top and column type fluid passage, one opening is arranged at umbrella top, edge extends to form flap structure downwards.
2. two-way filtration syringe according to claim 1, is characterized in that: described check-valves adopts resilient elastomeric material to make.
3. two-way filtration syringe according to claim 2, is characterized in that: described check-valves adopts silica gel material to make.
4. two-way filtration syringe according to claim 1, is characterized in that: the lower end of described column type fluid passage is connected by Connection Block with lower needle stand, and Connection Block has hole, forms liquid inlet.
5. two-way filtration syringe according to claim 1, it is characterized in that: described Connection Block top edges is provided with the edge lug boss of an annular, outside column type fluid passage and edge lug boss corresponding section is provided with intermediate lands, on imbibition filter membrane welding edge boss and intermediate lands, imbibition filter membrane is except welding portion, the upper needle stand of remainder discord contacts with lower needle stand, forms vacant state.
6. two-way filtration syringe according to claim 1, is characterized in that: the lower needle stand of the bottom end 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 CN103736174A (en) | 2014-04-23 |
| CN103736174B true CN103736174B (en) | 2015-12-02 |
Family
ID=50493283
Family Applications (1)
| 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103736174B (en) |
Families Citing this family (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 (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
Family Cites Families (3)
| 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 |
| KR100981586B1 (en) * | 2008-07-28 | 2010-09-10 | 강강구 | Safety Filter Tip For A Syringe |
| ITTO20120575A1 (en) * | 2012-06-27 | 2013-12-28 | Borla Ind | UNIDIRECTIONAL VALVE FOR MEDICAL INFUSION AND SIMILAR LINES |
-
2014
- 2014-01-26 CN CN201410036210.6A patent/CN103736174B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103736174A (en) | 2014-04-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103721321B (en) | A kind of automatic fitration syringe | |
| CN103736174B (en) | A kind of two-way filtration syringe | |
| CN103721322A (en) | Filtering syringe | |
| CN205268756U (en) | Injector | |
| CN203694266U (en) | Automatic filtering injector | |
| CN109432549A (en) | Filtering exudate syringe | |
| CN105596014A (en) | Double-cannula centrifugal injector | |
| CN203609751U (en) | Countercurrent-resistant medical connector | |
| CN203694267U (en) | Filtration injector | |
| CN205626607U (en) | Take totally enclosed magnetism to strain change over switch's transfusion system | |
| CN203694265U (en) | Bidirectional filtering type injector | |
| CN204446607U (en) | The molten syringe of a kind of pin type secondary filter | |
| CN203355048U (en) | Puncture outfit dripping funnel | |
| CN206391311U (en) | Filter injection needle | |
| CN206534959U (en) | A kind of stopcock formula filtering injection needle with passage | |
| CN206534958U (en) | Bi-directional filtered injection needle | |
| CN203989254U (en) | Automatic liquid-stopping transfusion apparatus | |
| CN203694241U (en) | Closed type infusion connector | |
| CN106668993A (en) | Filtering injection needle | |
| CN208838027U (en) | A kind of suction lipectomy device can provide continuous negative pressure | |
| CN206372357U (en) | Filter injection needle | |
| CN206228610U (en) | Binocular High-pressure Syringe enclosed drawing liquid connecting tube | |
| CN206138408U (en) | Dissolve even needle of medicine ware filter | |
| CN104524670A (en) | Needle type precise filtering and medicine dissolving syringe | |
| CN206391310U (en) | Filter injection needle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |