CN105853227B - Unidirectional filtering safe type dispensation injection needle - Google Patents
Unidirectional filtering safe type dispensation injection needle Download PDFInfo
- Publication number
- CN105853227B CN105853227B CN201610364673.4A CN201610364673A CN105853227B CN 105853227 B CN105853227 B CN 105853227B CN 201610364673 A CN201610364673 A CN 201610364673A CN 105853227 B CN105853227 B CN 105853227B
- Authority
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- China
- Prior art keywords
- liquid channel
- bottom plate
- batching pig
- needle
- liquid
- 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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Links
- 238000002347 injection Methods 0.000 title claims abstract description 24
- 239000007924 injection Substances 0.000 title claims abstract description 24
- 238000001914 filtration Methods 0.000 title claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 115
- 230000001141 propulsive effect Effects 0.000 claims abstract description 33
- 239000003814 drug Substances 0.000 claims abstract description 18
- 239000012528 membrane Substances 0.000 claims abstract description 13
- 238000005192 partition Methods 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 6
- 239000013013 elastic material Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000004323 axial length Effects 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims 2
- 239000000203 mixture Substances 0.000 claims 1
- 239000012535 impurity Substances 0.000 abstract description 3
- 239000002245 particle Substances 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- 239000007787 solid Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- 229940079593 drug Drugs 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- BVPWJMCABCPUQY-UHFFFAOYSA-N 4-amino-5-chloro-2-methoxy-N-[1-(phenylmethyl)-4-piperidinyl]benzamide Chemical compound COC1=CC(N)=C(Cl)C=C1C(=O)NC1CCN(CC=2C=CC=CC=2)CC1 BVPWJMCABCPUQY-UHFFFAOYSA-N 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000003708 ampul Substances 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000006166 lysate Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
- A61J1/14—Details; Accessories therefor
- A61J1/20—Arrangements for transferring or mixing fluids, e.g. from vial to syringe
- A61J1/2003—Accessories used in combination with means for transfer or mixing of fluids, e.g. for activating fluid flow, separating fluids, filtering fluid or venting
- A61J1/2079—Filtering means
- A61J1/2086—Filtering means for fluid filtration
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
- A61J1/14—Details; Accessories therefor
- A61J1/20—Arrangements for transferring or mixing fluids, e.g. from vial to syringe
- A61J1/2003—Accessories used in combination with means for transfer or mixing of fluids, e.g. for activating fluid flow, separating fluids, filtering fluid or venting
- A61J1/2006—Piercing means
- A61J1/201—Piercing means having one piercing end
Landscapes
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Pharmacology & Pharmacy (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 present invention relates to a kind of unidirectional filtering safe type dispensation injection needles, including needle tubing, needle stand and filter device, needle tubing is fixed on the front end of needle stand, filter device is equipped in the medicine liquid channel of the needle stand, mutually isolated drawing liquid channel and propulsive liquid channel are equipped in the filter device, the inlet and outlet in drawing liquid channel and propulsive liquid channel are connect with medicine liquid channel, the outlet end in the drawing liquid channel is equipped with filter membrane, the input end in the drawing liquid channel is equipped with check valve mechanism, and one-way valve structures are equipped in the propulsive liquid channel.This unidirectional filtering safe type dispensation injection needle is in drawing liquid and propulsive liquid, liquid is flowed by drawing liquid channel and propulsive liquid channel respectively, and the impurity being filtered out during drawing liquid is isolated between the check valve mechanism and the filter membrane of outlet end at drawing liquid channel entrance end, ensure that drawing liquid and propulsive liquid are two-way all safe.
Description
Technical field
The present invention relates to a kind of safe medical needling instrument, especially a kind of unidirectional filtering safe type dispensation injection needle.
Background technology
Currently, venous transfusion and injection are most common treatment means in medical treatment.Before being infused, it is often necessary to will
Some pulvis and liquid of glucose or liquor are formulated together.Specifically operating method is：Syringe is inserted into medicinal liquid bottle
Extract a small amount of liquid；Then it extracts syringe and is inserted into powdered medicine bottle, liquid medicine injection is entered in powdered medicine bottle；Wait for that medicinal powder is complete with liquid
After fully dissolved, then extracts mixed liquor injection infusion bottle out or be directly pumped into injection tube.
But when stating Medicine adder for injection in actual use, during making up a prescription, when lysate or medicine in extraction ampulla bottle
When liquid, some 3 one 5 microns particles are often will produce in these common powder, the production of water medicament, storage and transportational process,
As crystalline solid particle, carbon black particle crack the glass fragment generated when bottleneck and are easy further, since delineating bottleneck with grinding wheel
It falls into medicine bottle；Solid medicinal powder is when making up a prescription dissolving, since the operating time is short, the deliquescent difference of solid medicinal powder, there is part
Grain fails to dissolve, meanwhile, when doser punctures rubber, easily make rubber stopper damaged, generates rubber scraps into the liquid.This
Sample, when extracting liquid using Medicine adder for injection, glass fragment, part medicinal powder particle or rubber scraps are also drawn into.To
When patient carries out venous transfusion or injection, these clasts or particle are directly entered in blood of human body, can be blocked with blood circulation
Blood vessel brings harm or even threat to life to patient body.Therefore, it needs to be filtered medicine company during making up a prescription, to protect
Card safety.Existing dispensation injection needle common practice is one filter device of setting in liquid-transport pipe-line（Such as filter membrane）To this
A little solid medicinal powder particles and rubber scraps etc. are filtered, and the dispensation injection needle of this structure can only be by solid medicinal powder particle and rubber
Glue clast etc. is blocked in filter device（Such as filter membrane）Side be blocked in filter device if when reversed injection（Such as filtering
Film）The particulate matter of side will flow back, and harm is brought to patient body；Other are also additionally arranged check valve to prevent from flowing backwards, this
A little needle sets are only applicable to extract liquid medicine dispensation, cannot be suitble to be reversed propulsive liquid simultaneously.
Invention content
It is an object of the invention to provide and a kind of suitable for drawing liquid and push away simultaneously for overcome the deficiencies in the prior art
The unidirectional filtering safe type dispensation injection needle of liquid.
To achieve the goals above, the invention discloses a kind of unidirectional filtering safe type dispensation injection needles, including needle tubing, needle
Seat and filter device, needle tubing are fixed on the front end of needle stand, it is characterised in that：Filtering dress is equipped in the medicine liquid channel of the needle stand
It sets, mutually isolated drawing liquid channel and propulsive liquid channel, the inlet and outlet in drawing liquid channel and propulsive liquid channel is equipped in the filter device
It is connect with medicine liquid channel, the outlet end in the drawing liquid channel is equipped with filter membrane, and the input end in the drawing liquid channel is equipped with non-return
Valve system is equipped with one-way valve structures in the propulsive liquid channel.
Compared with prior art, the unidirectional filtering safe type dispensation injection needle of the present invention is in drawing liquid and propulsive liquid, liquid point
It is not flowed by drawing liquid channel and propulsive liquid channel, and the impurity being filtered out during drawing liquid is isolated in drawing liquid channel entrance
Between the check valve mechanism at end and the filter membrane of outlet end, the safety of propulsive liquid ensure that.
Below in conjunction with the accompanying drawings and specific embodiment the invention will be further described.
Description of the drawings
Attached drawing 1 is specific embodiment of the invention stereoscopic structural schematic diagram；
Attached drawing 2 is specific embodiment of the invention front view；
Attached drawing 3 is 2 A-A structure sectional views of attached drawing；
Attached drawing 4 is 3 portions I partial enlarged view of attached drawing；
Attached drawing 5 is one of specific embodiment of the invention exploded structural schematic diagram；
Attached drawing 6 is specific embodiment of the invention exploded second structural representation；
Attached drawing 7 is one of filter device specific embodiment exploded structural schematic diagram of the present invention；
Attached drawing 8 is filter device specific embodiment exploded second structural representation of the present invention.Specific implementation mode
As shown in Figs 1-4, unidirectional filtering safe type dispensation injection needle includes needle tubing 1, needle stand 2 and filter device 3, needle tubing 1
It is fixed on the front end of needle stand 2, filter device 3 is equipped in the medicine liquid channel of the needle stand 2, is equipped in the filter device 3 mutual
The inlet and outlet in the drawing liquid channel and propulsive liquid channel of isolation, drawing liquid channel and propulsive liquid channel are connect with medicine liquid channel, the drawing liquid
The outlet end in channel is equipped with filter membrane, and the input end in the drawing liquid channel is equipped with check valve mechanism, is equipped in the propulsive liquid channel
One-way valve structures.
As shown in Figure 7,8, in this specific embodiment, the filter device 3 includes batching pig 301, batching pig frame 302 and mistake
Filter membrane 303, the batching pig 301 include a bottom plate, and bottom plate one side center is equipped with vertical partition plate 3011, the vertical partition plate
Bottom plate is divided into left and right two parts, respectively drawing liquid bottom plate 3012 and propulsive liquid bottom plate 3013 by 3011, and the propulsive liquid bottom plate 3013 is set
There are opening, 3011 upper end propulsive liquid bottom plate of the vertical partition plate, 3013 side to be equipped with the transverse slat 3014 protruded horizontally up, the batching pig
301 are made into integration by soft elastic material, such as medical grade rubber or silica gel；The batching pig frame 302 is similarly the front and back cylinder being open
Shape component, cross-sectional shape and size and the bottom plate of the batching pig frame 302 match.The bottom plate is preferably circular, it is described every
From the cylindrical structural member that plug frame 302 is front and back opening, 302 axial length of batching pig frame is more than the height of vertical partition plate 3011
Degree so that longitudinal baffle 3021 is arranged containing space in inside.The vertical partition plate 3011 of the batching pig 301 is from batching pig frame 302
Towards one end of needle tubing 1（Front end）It stretches into and is arranged in batching pig frame 302, and the bottom plate of the batching pig 301 and batching pig frame
302 annular end faces are liquid-tight to be affixed, and 302 both ends end face of batching pig frame and inner wall want flat smooth, is conducive to improve leakproofness, vertically
The two sides of partition board 3011 with 302 madial wall of batching pig frame is liquid-tight is affixed（The mode being slightly interference fitted can be taken）, described
The 302 inner cavity other end of batching pig frame is equipped with（It is preferred that being integrated）Longitudinal baffle 3021,3021 position of the longitudinal baffle with it is vertical
Partition board 3011 is opposite, and the longitudinal baffle 3021 and 3011 position of vertical partition plate are preferably in center, the longitudinal baffle 3021
Top offset with 3011 top of vertical partition plate, the other end of longitudinal baffle 3021 is flushed with 302 end of batching pig frame, described vertical
302 inner cavity of batching pig frame is separated into equal two parts jointly to partition board 3021 and vertical partition plate 3011, with drawing liquid bottom
3012 corresponding side of plate constitutes the drawing liquid channel, and side corresponding with propulsive liquid bottom plate 3013 constitutes the propulsive liquid channel.Institute
State propulsive liquid vias inner walls are flushed with transverse slat 3014 in batching pig frame 302 position be equipped with both ends extend to longitudinal baffle 3021,
The baffle ring 3022 of protrusion, the transverse slat 3014, which is attached on 3022 end face of the baffle ring, constitutes the one-way valve structures, the isolation
It fills in frame 302 and the side wall of 3012 phase close neighbour of drawing liquid bottom plate is equipped with arc notch 3023, the setting of told arc notch 3023 so that
Drawing liquid side bottom plate again drawing liquid when have space for its opening, to open drawing liquid channel, the other side of drawing liquid side bottom plate is equipped with
The sealing surface 203 to match with drawing liquid bottom plate 3012 constitutes the check valve mechanism, and the filter membrane 303 is enclosed in drawing liquid channel
In outlet.
As shown in Figure 5,6, it produces for convenience, the needle stand 2 is preferably made of front needle seat 2 and rear needle stand 2, the needle tubing
1 is fixed on the front end of front needle seat 2, and the rear end of the front needle seat 2 is equipped with cylinder open vessel, and opening vessel end face center is equipped with
With the through-hole of 1 unicom of front end needle tubing, the through-hole peripheral circular plane constitutes the sealing surface 203；The front end of needle stand 2 after described
It is again provided with cylinder open vessel, the opposite merging of vessel opening of the front needle seat 2 and rear needle stand 2, which forms, is integrally formed needle stand
2, the vessel merging of the front needle seat 2 and rear needle stand 2 constitutes cylindrical 3 vessel of filter device, the internal diameter of 3 vessel of filter device
Match with the outer diameter of batching pig frame 302, the filter device 3 is arranged in 3 vessel of filter device, wherein batching pig frame 302
The madial wall of outer wall and 3 vessel of filter device is liquid-tight to be affixed.
The operation principle of this unidirectional filtering safe type dispensation injection needle is as follows：When taking out liquid, liquid entered by needle tubing 1
It filters in 3 vessel of device, cannot be introduced into propulsive liquid since the pressure of liquid makes 3014 liquid-tight phase of transverse slat be attached on 3022 end face of baffle ring
The other end in channel, and under the pressure of liquid, drawing liquid bottom plate 3012 made of the soft elastic material is pressed towards arc and lacks
3023 sides of mouth, and occur channel between the side wall of batching pig frame 302, liquid enters drawing liquid channel from the channel, using
Exit filter membrane 303 filters, and impurity is hindered in drawing liquid channel, and liquid is inhaled into syringe, after stopping drawing liquid action, liquid
Pressure disappears, and drawing liquid bottom plate 3012 restores that the sealing surface constituted with through-hole peripheral circular plane is liquid-tight to be affixed, prevention liquid and miscellaneous
Matter flows back；When pushing away liquid, due to drawing liquid bottom plate 3012 with through-hole sealing surface is liquid-tight is affixed, prevent liquid to be pushed away from drawing liquid channel
Go out, liquid can only enter propulsive liquid channel, and under the pressure of liquid, transverse slat 3014, which is open, opens check valve, using propulsive liquid bottom
Opening on plate 3013, then released from needle tubing 1, complete injection.
Claims (3)
1. a kind of unidirectional filtering safe type dispensation injection needle, including needle tubing, needle stand and filter device, before needle tubing is fixed on needle stand
End, it is characterised in that：It is equipped with filter device in the medicine liquid channel of the needle stand, mutually isolated pumping is equipped in the filter device
The inlet and outlet in liquid channel and propulsive liquid channel, drawing liquid channel and propulsive liquid channel are connect with medicine liquid channel, and the drawing liquid channel goes out
Mouth end is equipped with filter membrane, and the input end in the drawing liquid channel is equipped with check valve mechanism, check valve knot is equipped in the propulsive liquid channel
Structure；The filter device includes batching pig, batching pig frame and filter membrane, and the batching pig includes a bottom plate, bottom plate one side
Center is equipped with vertical partition plate, and bottom plate is divided into left and right two parts, respectively drawing liquid bottom plate and propulsive liquid bottom plate, institute by the vertical partition plate
It states propulsive liquid bottom plate and is equipped with opening, vertical partition plate upper end propulsive liquid bottom plate side is equipped with the transverse slat protruded horizontally up, the batching pig
It is made of soft elastic material；The batching pig frame is similarly the front and back cylindrical member being open, the cross section of the batching pig frame
Form and dimension and bottom plate match, and axial length is more than the height of vertical partition plate, and the vertical partition plate of the batching pig is from batching pig
One end of frame towards needle tubing, which is stretched into, to be arranged in batching pig frame, and the bottom plate of the batching pig and batching pig frame annular end face are liquid-tight
Be affixed, the two sides of vertical partition plate with batching pig frame madial wall is liquid-tight is affixed, the batching pig frame inner cavity other end is equipped with longitudinal
Partition board, the longitudinal baffle position is opposite with vertical partition plate, and top and the vertical partition plate top of the longitudinal baffle offset institute
It states batching pig frame inner cavity and is separated into two parts, side corresponding with drawing liquid bottom plate constitutes the drawing liquid channel, with propulsive liquid bottom plate phase
Corresponding side constitutes the propulsive liquid channel, the position that the batching pig frame inner wall is flushed with transverse slat equipped with both ends extend to longitudinally every
Plate, raised baffle ring, the transverse slat, which is attached on the baffle ring end face, constitutes the one-way valve structures, the batching pig frame and pumping
The side wall of liquid bottom plate phase close neighbour is equipped with arc notch, and the other side of the drawing liquid bottom plate is equipped with the sealing surface to match with drawing liquid bottom plate
The check valve mechanism is constituted, the filter membrane is enclosed in the outlet in drawing liquid channel.
2. unidirectional filtering safe type dispensation injection needle according to claim 1, it is characterised in that：The bottom plate is circle,
The batching pig frame is the cylindrical structural member of front and back opening.
3. unidirectional filtering safe type dispensation injection needle according to claim 1 or 2, it is characterised in that：The needle stand is by preceding
Needle stand and rear needle stand composition, the needle tubing are fixed on the front end of front needle seat, and the rear end of the front needle seat holds equipped with cylinder open
Chamber, opening vessel end face center are equipped with the through-hole with front end needle tubing unicom, and the through-hole peripheral circular plane constitutes the sealing
Face；The front end of needle stand is again provided with cylinder open vessel after described, and the vessel opening of the front needle seat and rear needle stand is involutory
And into needle stand is integrally formed, the vessel merging of the front needle seat and rear needle stand constitutes filter device vessel, the filter device
It is arranged in filter device vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610364673.4A CN105853227B (en) | 2016-05-27 | 2016-05-27 | Unidirectional filtering safe type dispensation injection needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610364673.4A CN105853227B (en) | 2016-05-27 | 2016-05-27 | Unidirectional filtering safe type dispensation injection needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105853227A CN105853227A (en) | 2016-08-17 |
| CN105853227B true CN105853227B (en) | 2018-08-21 |
Family
ID=56641544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610364673.4A Active CN105853227B (en) | 2016-05-27 | 2016-05-27 | Unidirectional filtering safe type dispensation injection needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105853227B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106110444A (en) * | 2016-09-22 | 2016-11-16 | 吉林大学 | A kind of multifunctional injector |
| CN107456632A (en) * | 2017-09-23 | 2017-12-12 | 吉林大学 | A kind of anti-micro particle filtering formula syringe |
| CN107811859A (en) * | 2017-11-30 | 2018-03-20 | 华德芳 | Dispensing injector with pin |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4743243A (en) * | 1984-01-03 | 1988-05-10 | Vaillancourt Vincent L | Needle with vent filter assembly |
| CN2572978Y (en) * | 2002-09-06 | 2003-09-17 | 赵明宣 | Single-steel needle dosing suction injection filter needle seat |
| CN2699913Y (en) * | 2004-04-09 | 2005-05-18 | 江苏苏云医疗器材有限公司 | Disposable liquor precised filter device for intravenous transfusion |
| CN201304107Y (en) * | 2008-12-16 | 2009-09-09 | 孙世军 | Bushing dispensing device |
| CN103006437A (en) * | 2012-12-03 | 2013-04-03 | 陈庆强 | Double-channel filtration dosing injection syringe |
| CN103721321A (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 | Automatic filtration injector |
| 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 |
| CN206120738U (en) * | 2016-05-27 | 2017-04-26 | 浙江康德莱医疗器械股份有限公司 | Safe type of one -way filtration syringe needle that dispenses |
-
2016
- 2016-05-27 CN CN201610364673.4A patent/CN105853227B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4743243A (en) * | 1984-01-03 | 1988-05-10 | Vaillancourt Vincent L | Needle with vent filter assembly |
| CN2572978Y (en) * | 2002-09-06 | 2003-09-17 | 赵明宣 | Single-steel needle dosing suction injection filter needle seat |
| CN2699913Y (en) * | 2004-04-09 | 2005-05-18 | 江苏苏云医疗器材有限公司 | Disposable liquor precised filter device for intravenous transfusion |
| CN201304107Y (en) * | 2008-12-16 | 2009-09-09 | 孙世军 | Bushing dispensing device |
| CN103006437A (en) * | 2012-12-03 | 2013-04-03 | 陈庆强 | Double-channel filtration dosing injection syringe |
| CN103721321A (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 | Automatic filtration injector |
| 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 |
| CN206120738U (en) * | 2016-05-27 | 2017-04-26 | 浙江康德莱医疗器械股份有限公司 | Safe type of one -way filtration syringe needle that dispenses |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105853227A (en) | 2016-08-17 |
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