CN105919807B - Safety-type bi-directional filtered dispensation injection needle - Google Patents
Safety-type bi-directional filtered dispensation injection needle Download PDFInfo
- Publication number
- CN105919807B CN105919807B CN201610368413.4A CN201610368413A CN105919807B CN 105919807 B CN105919807 B CN 105919807B CN 201610368413 A CN201610368413 A CN 201610368413A CN 105919807 B CN105919807 B CN 105919807B
- Authority
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- China
- Prior art keywords
- liquid
- liquid channel
- propulsive
- batching pig
- needle
- 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
- 239000007788 liquid Substances 0.000 claims abstract description 124
- 230000001141 propulsive effect Effects 0.000 claims abstract description 44
- 239000003814 drug Substances 0.000 claims abstract description 18
- 239000012528 membrane Substances 0.000 claims abstract description 17
- 230000007246 mechanism Effects 0.000 claims abstract description 9
- 238000005192 partition Methods 0.000 claims description 4
- 239000013013 elastic material Substances 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims description 2
- 238000001914 filtration Methods 0.000 abstract description 6
- 239000012535 impurity Substances 0.000 abstract description 6
- 239000002245 particle Substances 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000007787 solid Substances 0.000 description 5
- 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
- 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
- 230000009471 action Effects 0.000 description 1
- 239000003708 ampul Substances 0.000 description 1
- 230000004888 barrier function Effects 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
- 238000002955 isolation Methods 0.000 description 1
- 239000006166 lysate Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000008569 process 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
- 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
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
-
- 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)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pharmacology & Pharmacy (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Anesthesiology (AREA)
- Vascular Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The present invention relates to a kind of safety-type bi-directional filtered dispensation injection needles, and including needle tubing, needle stand and filter device, needle tubing is fixed on the front end of needle stand, it is characterised in that：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 of drawing liquid channel and propulsive liquid channel are connect with medicine liquid channel, the arrival end and drawing liquid channel outlet of the propulsive liquid channel are equipped with filter membrane, drawing liquid one-way valve mechanism is equipped in the drawing liquid channel, propulsive liquid one-way valve structures are equipped in the propulsive liquid channel.The bi-directional filtered dispensation injection needle of intrinsic safety holotype is in drawing liquid and propulsive liquid, liquid is flowed respectively by drawing liquid channel and propulsive liquid channel, and the impurity being filtered out during drawing liquid is isolated between the drawing liquid one-way valve mechanism at drawing liquid channel entrance end and the filter membrane of the port of export；And during propulsive liquid, the impurity in the syringe being filtered out is isolated in propulsive liquid channel entrance end by filter membrane, ensure that drawing liquid and propulsive liquid double filtration, more securely and reliably.
Description
Technical field
The present invention relates to a kind of safe medical needling instrument, particularly a kind of safety-type bi-directional filtered dispensation injection needle.
Background technology
At present, 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；Treat that medicinal powder is complete with liquid
After fully dissolved, then extract 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
During liquid, some 3 one 5 microns particles are often generated in these common powder, the production of water medicament, storage and transportational process,
Such as crystalline solid particle, carbon black particle, further, since delineating bottleneck with grinding wheel, it is easy to crack the glass fragment generated during bottleneck
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, generate rubber scraps into the liquid.This
Sample, when Medicine adder for injection is used to extract liquid, 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, if reversely injection, be blocked in filter device（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, it is impossible to while be suitble to be reversed propulsive liquid.
Invention content
It is an object of the invention to be provided for overcome the deficiencies in the prior art a kind of while be suitable for drawing liquid and push away
The safety-type bi-directional filtered dispensation injection needle of liquid.
To achieve these goals, the invention discloses a kind of safety-type bi-directional filtered dispensation injection needle, 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 puts, the inlet and outlet of mutually isolated drawing liquid channel and propulsive liquid channel, drawing liquid channel and propulsive liquid channel is equipped in the filter device
It is connect with medicine liquid channel, the port of export of the drawing liquid channel and the arrival end of propulsive liquid channel are equipped with filter membrane, the drawing liquid
Drawing liquid one-way valve mechanism is equipped in channel, propulsive liquid one-way valve structures are equipped in the propulsive liquid channel.
Compared with prior art, the safety-type bi-directional filtered 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, the impurity being filtered out during drawing liquid is isolated in drawing liquid channel entrance end
Drawing liquid one-way valve mechanism and the port of export filter membrane between；And during propulsive liquid, the impurity in the syringe being filtered out
Propulsive liquid channel entrance end is isolated in by filter membrane, ensure that drawing liquid and propulsive liquid double filtration, more securely and reliably.
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 structure diagram；
Attached drawing 2 is filter device specific embodiment front side structure schematic diagram of the present invention；
Attached drawing 3 is filter device specific embodiment rear structure schematic diagram of the present invention；
Attached drawing 4 is one of filter device specific embodiment exploded structure diagram of the present invention；
Attached drawing 5 is filter device specific embodiment exploded second structural representation of the present invention；
Attached drawing 6 is specific embodiment of the invention end side structure diagram；
Attached drawing 7 is 6 A-A structure sectional views of attached drawing；
Attached drawing 8 is 7 I portions partial enlarged view of attached drawing；
Attached drawing 9 is one of specific embodiment of the invention exploded structure diagram；
Attached drawing 10 is specific embodiment of the invention exploded second structural representation.
Specific embodiment
As shown in Fig. 1,9,10, safety-type bi-directional filtered dispensation injection needle includes needle tubing 1, needle stand 2 and filter device 3, needle
Pipe 1 is fixed on the front end of needle stand 2, and filter device 3 is equipped in the medicine liquid channel of the needle stand 2, phase is equipped in the filter device 3
The inlet and outlet of the drawing liquid channel and propulsive liquid channel being mutually isolated, drawing liquid channel and propulsive liquid channel are connect with medicine liquid channel, the pumping
The port of export of liquid channel and the arrival end of propulsive liquid channel are equipped with filter membrane 303, and drawing liquid check valve is equipped in the drawing liquid channel
Mechanism is equipped with propulsive liquid one-way valve structures in the propulsive liquid channel, and drawing liquid one-way valve mechanism and propulsive liquid one-way valve structures can be set
Any suitable position in the channel.
As shown in Figure 2-5, 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 are the cylindrical structural member of front and rear opening, and inner cavity is separated by centre equipped with lateral partitions 3011
Ante-chamber 3012 and back cavity 3013, the batching pig 301 is made of soft elastic material, such as medical grade rubber or silica gel；The isolation
Plug frame 302 is similarly the front and rear cylindrical structural member being open, and is formed by plastic injection, the endoporus of the batching pig frame 302 is with being isolated
The outer diameter of plug 301 matches, and the batching pig 301 is arranged in batching pig frame 302, and longitudinal direction is additionally provided in the batching pig frame 302
The back cavity 3013 of the batching pig 301 is separated into left back chamber 3013a and right back cavity 3013b, the batching pig frame by partition board 3021
Drawing liquid diversion trench 3022 and propulsive liquid diversion trench 3023 are additionally provided on 302 madial wall, the drawing liquid diversion trench 3022 is set in an axial direction
It puts, the left back corresponding positions of chamber 3013a with the batching pig 301, institute is extended to from 302 ante-chamber of batching pig frame, 3012 end face
It states drawing liquid diversion trench 3022 and left back chamber 3013a forms the drawing liquid channel, the propulsive liquid diversion trench 3023 is axially disposed, from
The end face of 302 back cavity 3013 of batching pig frame and the right back cavity 3013b opposite positions of the batching pig 301 extend to it is described every
3012 corresponding position of ante-chamber from plug 301, the propulsive liquid diversion trench 3023 and ante-chamber 3012 form the propulsive liquid channel, institute
State the lateral wall of batching pig 301 and batching pig frame 302 madial wall it is liquid-tight be affixed, and respectively with drawing liquid diversion trench 3022 and propulsive liquid
Diversion trench 3023 matches the composition drawing liquid one-way valve mechanism and propulsive liquid one-way valve structures, the filter membrane 303 are enclosed in a left side
In the outlet of back cavity 3013a and the import of right back cavity 3013b.
It as shown in Fig. 9,10, produces for convenience, the needle stand 2 is preferably made of front needle seat 201 and rear needle stand 202, institute
The front end that needle tubing 1 is fixed on front needle seat 201 is stated, the rear end of the front needle seat 201 is equipped with cylinder open cavity volume, the rear needle stand
202 front end is again provided with cylinder open cavity volume, the cavity volume of the front needle seat 201 and rear needle stand 202 be open with respect to merging and
Integral to form needle stand 2, the cavity volume merging of the front needle seat 201 and rear needle stand 202 forms cylindrical 3 cavity volume of filter device,
The internal diameter of 3 cavity volume of filter device matches with the outer diameter of batching pig frame 302, and the filter device 3 is arranged on 3 cavity volume of filter device
In, wherein, the outer wall of batching pig frame 302 with the madial wall of 3 cavity volume of filter device is liquid-tight is affixed, as shown in figs 6-8.
The operation principle of the bi-directional filtered dispensation injection needle of intrinsic safety holotype is as follows：When taking out liquid, liquid entered by needle tubing 1
The ante-chamber 3012 of batching pig 301 in 3 cavity volume of device is filtered, due to the barrier of lateral partitions 3011, liquid can only be from drawing liquid diversion trench
3022 flow into, and since the batching pig 301 is made of soft elastic material, the pressure of liquid causes the left back chamber of batching pig 301
The concave side wall at 3013a positions, after liquid enters left back chamber 3013a, using the filter membrane in left back chamber 3013a outlets exit
303 filterings, liquid inhalation syringe, after stopping drawing liquid action, liquid pressure disappears, the left back chamber 3013a positions of batching pig 301
Side wall restore and the madial wall of batching pig frame 302 is liquid-tight is affixed, impurity is prevented from the left back chamber 3013a of 303 side of filter membrane
In；When pushing away liquid, liquid enters right back cavity 3013b by the entrance filtering membrane filtration of right back cavity 3013b, and liquid is led from propulsive liquid
Chute 3023 is flow to and 3012 corresponding position of the ante-chamber of the batching pig 301,301 wall deformation indent of batching pig, liquid
It is released into after ante-chamber 3012, then from needle tubing 1, completes injection, impurity is stopped in 303 syringe side of filter membrane.
Claims (2)
1. a kind of safety-type bi-directional filtered 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：Filter device is equipped in the medicine liquid channel of the needle stand, mutually isolated pumping is equipped in the filter device
The inlet and outlet of 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
The arrival end of mouth end and propulsive liquid channel is equipped with filter membrane, and drawing liquid one-way valve mechanism, the propulsive liquid are equipped in the drawing liquid channel
Propulsive liquid one-way valve structures are equipped in channel；The filter device includes batching pig, batching pig frame and filter membrane, and the batching pig is
Inner cavity is separated into ante-chamber and back cavity by the cylindrical structural member of front and rear opening, centre equipped with lateral partitions, and the batching pig is by soft
Elastic material is made；The batching pig frame is similarly the front and rear cylindrical structural member being open, and the endoporus of the batching pig frame is with being isolated
The outer diameter of plug matches, and the batching pig is arranged in batching pig frame, be additionally provided in the batching pig frame longitudinal baffle will it is described every
Back cavity from plug is separated into left back chamber and right back cavity, is additionally provided with drawing liquid diversion trench on the madial wall of the batching pig frame and propulsive liquid is led
Chute, the drawing liquid diversion trench is axially disposed, and the left back chamber phase with the batching pig is extended to from batching pig frame ante-chamber end face
Corresponding position, the drawing liquid diversion trench and left back chamber form the drawing liquid channel；The propulsive liquid diversion trench is axially disposed, from
Batching pig frame back cavity extends to opposite with the ante-chamber of the batching pig with the end face of the right back cavity opposite position of the batching pig
The position answered, the propulsive liquid diversion trench and ante-chamber form the propulsive liquid channel, lateral wall and the batching pig frame of the batching pig
Madial wall is liquid-tight to be affixed, and is matched respectively with drawing liquid diversion trench and propulsive liquid diversion trench and formed the drawing liquid one-way valve mechanism and push away
Liquid one-way valve structures, the filter membrane are enclosed in the outlet of left back chamber and the import of right back cavity.
2. safety-type bi-directional filtered dispensation injection needle according to claim 1, it is characterised in that：The needle stand is by front needle seat
It is formed with rear needle stand, the needle tubing is fixed on the front end of front needle seat, and the rear end of the front needle seat is equipped with cylinder open cavity volume, institute
The front end for stating rear needle stand is again provided with cylinder open cavity volume, and the cavity volume opening of the front needle seat and rear needle stand is opposite to be merged
Needle stand is integrally formed, the cavity volume merging of the front needle seat and rear needle stand forms filter device cavity volume, and the filter device is arranged on
In filter device cavity volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610368413.4A CN105919807B (en) | 2016-05-27 | 2016-05-27 | Safety-type bi-directional filtered dispensation injection needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610368413.4A CN105919807B (en) | 2016-05-27 | 2016-05-27 | Safety-type bi-directional filtered dispensation injection needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105919807A CN105919807A (en) | 2016-09-07 |
| CN105919807B true CN105919807B (en) | 2018-07-03 |
Family
ID=56842316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610368413.4A Active CN105919807B (en) | 2016-05-27 | 2016-05-27 | Safety-type bi-directional filtered dispensation injection needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105919807B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110353992B (en) * | 2019-07-25 | 2024-03-22 | 江苏苏云医疗器材有限公司 | Filter for dispensing device or injector and filtering method thereof |
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 |
| CN206102975U (en) * | 2016-05-27 | 2017-04-19 | 浙江康德莱医疗器械股份有限公司 | Two -way filtration of safe type syringe needle that dispenses |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2344526B (en) * | 1999-01-12 | 2001-05-23 | Dumaresq Lucas Alison Jayne | Syringe with filter,and filter therefor |
-
2016
- 2016-05-27 CN CN201610368413.4A patent/CN105919807B/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 |
| CN206102975U (en) * | 2016-05-27 | 2017-04-19 | 浙江康德莱医疗器械股份有限公司 | Two -way filtration of safe type syringe needle that dispenses |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105919807A (en) | 2016-09-07 |
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