CN106334235A - Filter needle head - Google Patents
Filter needle head Download PDFInfo
- Publication number
- CN106334235A CN106334235A CN201610837790.8A CN201610837790A CN106334235A CN 106334235 A CN106334235 A CN 106334235A CN 201610837790 A CN201610837790 A CN 201610837790A CN 106334235 A CN106334235 A CN 106334235A
- Authority
- CN
- China
- Prior art keywords
- check
- chamber
- needle stand
- sealing gasket
- valve element
- 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.)
- Pending
Links
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
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
-
- 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
-
- 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
- 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
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/75—General characteristics of the apparatus with filters
- A61M2205/7545—General characteristics of the apparatus with filters for solid matter, e.g. microaggregates
Landscapes
- Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Vascular Medicine (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Pharmacology & Pharmacy (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention provides a filter needle head. The filter needle head comprises a steel needle, an upper needle seat, a lower needle seat, a check valve and a filter diaphragm, wherein the steel needle is installed at the front end of the upper needle seat, the rear end of the upper needle seat is successively provided with a check valve cavity, a gasket cavity and a lower needle seat cavity, the front end of the lower needle seat is provided with an end wall, the middle part of the end wall is provided with a valve element, a blind hole is formed inside the valve element, the lower end of the blind hole penetrates through the end wall, the upper end of the blind hole is disposed inside the valve element and perpendicularly provided with a liquid outlet hole, one end of the liquid outlet hole is communicated with the blind hole, the other end of the liquid outlet hole is disposed on the side wall of the valve element, two sides of the valve element on the end wall are provided with a liquid inlet, the check valve comprises a check valve barrel, the lower end of the check valve barrel is provided with a gasket, the lower needle seat is in interference fit with the cavity of the lower needle seat, and the check valve and an annular filter membrane sleeve the valve element. A liquid inlet passage and a liquid outlet passage of the check valve do not interfere each other, the check valve barrel wraps the valve element in a way of being in surface contact with the valve element, so that the contact area is increased, the reliability is improved, and the check valve is relatively simple in machining and manufacturing process.
Description
Technical field
The present invention relates to medical apparatus field is and in particular to a kind of structure improved syringe needle.
Background technology
In the medical field using for many years, supporting syringe is used for the muscle, quiet in clinic to disposable needle
Arteries and veins, subcutaneous, intradermal injection or infusion are used, and its contour structures is simple, easy to use, because it is as disposable devicess,
Thus having prevented the cross infection of patient.
According to domestic and foreign literature data report, find that clinic, during opening the ampoule bottle of glass, has substantial amounts of naked eyes
Sightless glass chip falls in ampoule bottle inner liquid medicine, or, in the configuration process of transfusion medicinal liquid, west is punctured using needle tubing
During the plug of woods bottle or big infusion vessel, buffings microgranule can be produced, meanwhile, in medicinal liquid, itself also can have particulate matter
Or the foreign body such as exogenous impurity.Syringe when extracting medicinal liquid, all take out by the microgranule that these is present in medicinal liquid, chip, impurity
Enter in the cylinder of injection device, and the normal injection pin of domestic use is all not have defecator, injects medicinal liquid in injection needle
During human muscle or vein, also the microgranule in medicinal liquid, chip, impurity are all injected into tissue and suffer, these
External foreign body will cause serious infringement to patient, threatens the life of patient when serious.
Number of patent application: 201420805263.5 disclose a kind of injection needle with defecator, by shell, filters dress
Put, rustless steel needle tubing and protective case form, defecator is arranged on shell, and defecator is by valve element, liquid medicine filtering membrane or mistake
Filter plug composition.Defecator passes through interference fit with the defecator installing hole of shell, and the valve element of defecator is arranged on
In the cylindrical hole of shell, contiguous block is arranged in defecator installing hole, and handle is arranged on outside shell, and swing handle can make
Valve element can rotate in the cylindrical hole of shell, select through injection needle medicinal liquid the need of filtration.When using, first will
Syringe pump medicinal liquid, medicinal liquid does not directly enter injector cartridge from injection needle passageway through defecator, is injecting medicine
Before liquid, then the handle on rotary injection pin defecator, change medicinal liquid and flow through passage, can be through injection needle when medicinal liquid is injected
Defecator, make the medicinal liquid in entrance human body be purified, it is to avoid foreign body enter the injury bringing in human body it is ensured that
The drug safety of patient.
Number of patent application: 201410036208.9 disclose a kind of filter-type syringe, including syringe and filtration injection
Pin, described injection needle is made up of needle tubing and needle stand, and needle tubing is arranged on the front end of needle stand, and the rear end of lower needle stand is connected to syringe
Conehead on, the front end of lower needle stand and upper needle stand combine to form imbibition entrance and injection exports, and lower needle stand is provided with check-valves,
The injection direction in the imbibition direction of imbibition entrance and injection outlet for the check-valves is opened, and injection outlet is provided with filter.
Content of the invention
It is an object of the invention to provide a kind of structure is simple, it is possible to use pressure change in syringe, automatically adjust valve element
The filtration pin of state, thus simplifying nurse's injecting step, reduces labor intensity.
The technical scheme is that
A kind of filtering needle, including draw point, upper needle stand, lower needle stand, check-valves and filter membrane, draw point is arranged on needle stand
Front end, the rear end of lower needle stand is connected on the conehead of syringe, the rear end of upper needle stand be sequentially provided be coaxially disposed with draw point only
Go back to valve pocket, sealing gasket chamber and lower needle stand chamber, the internal diameter of check valve chamber is less than the internal diameter in sealing gasket chamber, the internal diameter in sealing gasket chamber is less than
The internal diameter in lower needle stand chamber, the front end of described lower needle stand is vertically provided with end wall, is vertically provided with the valve element of cylinder, valve element in the middle part of end wall
Inside be coaxially provided with blind hole, the lower end of blind hole passes through and is connected inside end wall and lower needle stand, and the upper end of blind hole is in valve element
Portion and be vertically provided with liquid outlet, one end of liquid outlet and blind hole are connected, and the other end of liquid outlet is located on the side wall of valve element, institute
State end wall upper valve core both sides be provided with lower needle stand inside the inlet that is connected, described check-valves include columnar check-valves
Cylinder, the lower end of check-valves cylinder is vertically provided with the sealing gasket of annular, the lower needle stand intracavity portion of lower needle stand insertion and lower needle stand chamber it
Between interference fit connect, check-valves and annular filter membrane be set in outside valve element, check-valves cylinder is arranged in check valve chamber
Portion, sealing gasket and filter membrane are arranged at sealing gasket intracavity portion.
When filtering needle of the present invention uses, under inhaling action of hydraulic force, sealing gasket is downward-sloping, liquid from sealing gasket with close
Gap between the top of packing chamber enters into sealing gasket intracavity portion, then enters into inlet by filter membrane, further leads to
Cross inlet and enter into lower needle stand intracavity portion.In injection, in the blind hole that liquid enters into valve element the blind hole in the middle of end wall,
Under the effect of the pressure, the gap that liquid passes through between the liquid outlet other end and check-valves cylinder medial wall enters from valve element front end
To in check valve chamber, discharge then into behind draw point inside.Impurity of the present invention can be sealed to below sealing gasket when filtering
And the position between above filter membrane, in injection, will not enter in liquid outlet channel, feed pathway and liquid outlet channel are not mutually done
Relate to, outside valve element, between check-valves cylinder medial wall and valve element lateral wall, face contacts check-valves barrel wrap, contact area
Greatly, highly reliable, and check-valves processing technology is simple, processing cost is low, suitable large-scale industrial production.
The lower end of described valve element is provided with sealed step, and the diameter with diameter greater than valve element of sealed step is less than check-valves cylinder
External diameter, the medial wall of described check-valves cylinder is provided with the groove matching with sealed step.
The setting of sealed step and groove further enhancing the sealing effectiveness of check-valves.
The diameter of described filter membrane is equal to the internal diameter in sealing gasket chamber, less than the diameter of end wall.
The diameter of filter membrane be equal to sealing gasket chamber internal diameter, it is possible to increase sealing and filter effect, it is to avoid liquid without
Filter and directly entered in lower needle stand by inlet.
The diameter of described sealing gasket is less than the internal diameter in sealing gasket chamber.
Sealing gasket diameter is less than the internal diameter in sealing gasket chamber, when sucking liquid, can reduce imbibition pressure, only using less
Power just can open gap between sealing gasket and sealing gasket chamber upper wall, reduce the working strength of nurse.
The external diameter of described check-valves cylinder is less than the internal diameter of check valve chamber, and the height of described check-valves cylinder is less than check-valves
The height in chamber.
The height in described sealing gasket chamber is more than filtration film thickness and sealing mat thickness sum.
Increase the inner space in sealing gasket chamber, enable partial impurities to retain the sealing between filter membrane and sealing gasket
Pad intracavity portion.
The present invention has the advantages and positive effects that: check-valves feed pathway of the present invention and liquid outlet channel do not interfere with each other,
The mode that check-valves cylinder is contacted with valve element face wraps up valve element, and contact area increases, and reliability strengthens, and check-valves processing system
Make technique relatively easy, low production cost.
Brief description
Fig. 1 is the explosive view of filtering needle of the present invention
Fig. 2 is the structural representation of filtering needle imbibition state of the present invention
Fig. 3 is the structural representation that filtering needle of the present invention goes out liquid status
In figure:
1st, draw point 2, upper needle stand 3, lower needle stand 4, check-valves 5, filter membrane 21, check valve chamber 22, sealing
Pad chamber 23, lower needle stand chamber 31, valve element 32, liquid outlet 33, blind hole 34, sealed step 35, inlet 36, end
Wall 41, check-valves cylinder 42, sealing gasket 43, groove
Specific embodiment
As shown in figure 1, a kind of filtering needle of the present invention, including draw point 1, upper needle stand 2, lower needle stand 3, check-valves 4 and filtration
Film 5, draw point 1 is arranged on the front end of needle stand 2, and the rear end of lower needle stand 3 is connected on the conehead of syringe, the rear end of upper needle stand 2
It is sequentially provided with the check valve chamber 21 being coaxially disposed with draw point 1, sealing gasket chamber 22 and lower needle stand chamber 23, the internal diameter of check valve chamber 21 is little
In the internal diameter in sealing gasket chamber 22, the internal diameter in sealing gasket chamber 22 is less than the internal diameter in lower needle stand chamber 23, is provided with end in the front end of lower needle stand 3
Wall 36, is vertically provided with the valve element 31 of cylinder, the inside of valve element 31 is coaxially provided with blind hole 33, the lower end of blind hole 33 in the middle part of end wall 36
It is connected through inside end wall 36 and lower needle stand 3, it is internal and be vertically provided with liquid outlet 32 that the upper end of blind hole 33 is located at valve element 31, goes out
One end of fluid apertures 32 is connected with blind hole 33, and the other end of liquid outlet 32 is located on the side wall of valve element 31, end wall 36 upper valve core 31
Both sides be provided with lower needle stand 3 inside the inlet 35 that is connected, check-valves 4 include columnar check-valves cylinder 41, non-return
The lower end of valve cylinder body 41 is vertically provided with the sealing gasket 42 of annular, the lower needle stand chamber of lower needle stand 3 insertion 23 internal with lower needle stand chamber 23 it
Between interference fit connect, the filter membrane 5 of check-valves 4 and annular is set in outside valve element 31, and check-valves cylinder 41 is arranged at non-return
Inside valve pocket 21, sealing gasket 42 and filter membrane 5 are arranged inside sealing gasket chamber 22.
Further, sealed step 34 can be provided with the lower end of valve element 31, sealed step 34 with diameter greater than valve element 31
Diameter be less than the external diameter of check-valves cylinder 41, the medial wall of check-valves cylinder 41 is provided with recessed with what sealed step 34 matched
Groove 43.The setting of sealed step 34 and groove 43 further increases the sealing effectiveness of check-valves 4.
In order to improve sealing effectiveness and filter effect, the diameter of filter membrane 5 can be made to be equal to the internal diameter in sealing gasket chamber 22, little
In the diameter of end wall 36, so it can be avoided that liquid directly enters into lower needle stand 3 by inlet 35 without filter membrane 5
Interior.
Further, the diameter of sealing gasket 42 can be less than the internal diameter in sealing gasket chamber 22, it can be avoided that sealing gasket 42 side
Also form sealing between wall and sealing gasket chamber 22 inwall, when sucking liquid, imbibition pressure can be reduced, only using less power
The gap between sealing gasket 42 and sealing gasket chamber 22 upper wall just can be opened, reduce the working strength of nurse.
The external diameter of check-valves cylinder 41 is less than the internal diameter of check valve chamber 21, and the height of check-valves cylinder 41 is less than check valve chamber
21 height.
The height in sealing gasket chamber 22 is more than filter membrane 5 thickness and sealing gasket 42 thickness sum.
The work process of this example:
When filtering needle of the present invention uses, as shown in Fig. 2 under inhaling action of hydraulic force, sealing gasket 42 is downward-sloping, liquid
Gap between sealing gasket 42 and sealing gasket chamber 22 top enters into inside sealing gasket chamber 22, is then entered by filter membrane 5
To inlet 35, further entered into inside lower needle stand chamber 23 by inlet 35.
As shown in figure 3, in injection, in the blind hole 33 that liquid enters into valve element 31 from the blind hole 33 in the middle of end wall 36,
Under the effect of the pressure, liquid by gap between liquid outlet 32 other end and check-valves cylinder 41 medial wall before valve element 31
End enters in check valve chamber 21, discharges then into behind draw point 1 inside.
Impurity of the present invention is sealed in the sealing gasket chamber 22 between sealing gasket 42 lower section and filter membrane 5 top, in injection
When, impurity will not enter in liquid outlet channel, and feed pathway and liquid outlet channel are non-interference, and check-valves cylinder 41 is wrapped in valve element
Outside 31, between check-valves cylinder 41 medial wall and valve element 31 lateral wall, face contacts, and contact area is big, highly reliable, and non-return
Valve 4 processing technology is simple, and processing cost is low, suitable large-scale industrial production.
Above one embodiment of the present of invention is described in detail, but described content has been only the preferable enforcement of the present invention
Example is it is impossible to be considered the practical range for limiting the present invention.All impartial changes made according to the present patent application scope and improvement
Deng all should still belong within the patent covering scope of the present invention.
Claims (6)
1. a kind of filtering needle, including draw point, upper needle stand, lower needle stand, check-valves and filter membrane, before draw point is arranged on needle stand
End, the rear end of lower needle stand be connected on the conehead of syringe it is characterised in that: the rear end of upper needle stand is sequentially provided with coaxial with draw point
The check valve chamber of setting, sealing gasket chamber and lower needle stand chamber, the internal diameter of check valve chamber is less than the internal diameter in sealing gasket chamber, sealing gasket chamber
Internal diameter is less than the internal diameter in lower needle stand chamber, and the front end of described lower needle stand is vertically provided with end wall, is vertically provided with cylinder in the middle part of end wall
Valve element, the inside of valve element is coaxially provided with blind hole, and the lower end of blind hole passes through and is connected inside end wall and lower needle stand, the upper end position of blind hole
In valve core inside and vertically it is provided with liquid outlet, one end of liquid outlet and blind hole are connected, the other end of liquid outlet is located at valve element
On the wall of side, the both sides of described end wall upper valve core be provided with lower needle stand inside the inlet that is connected, described check-valves include cylinder
The check-valves cylinder of shape, the lower end of check-valves cylinder is vertically provided with the sealing gasket of annular, the lower needle stand intracavity portion of lower needle stand insertion with
Between lower needle stand chamber, interference fit connects, and the filter membrane of check-valves and annular is set in outside valve element, and check-valves cylinder is arranged at
Inside check valve chamber, sealing gasket and filter membrane are arranged at sealing gasket intracavity portion.
2. filtering needle according to claim 1 it is characterised in that: the lower end of described valve element is provided with sealed step, sealing
The diameter with diameter greater than valve element of step is less than the external diameter of check-valves cylinder, the medial wall of described check-valves cylinder be provided with close
The groove that envelope step matches.
3. filtering needle according to claim 1 and 2 it is characterised in that: the diameter of described filter membrane be equal to sealing gasket chamber
Internal diameter, less than the diameter of end wall.
4. filtering needle according to claim 3 it is characterised in that: the diameter of described sealing gasket be less than sealing gasket chamber interior
Footpath.
5. filtering needle according to claim 4 it is characterised in that: the external diameter of described check-valves cylinder be less than check valve chamber
Internal diameter, the height of described check-valves cylinder is less than the height of check valve chamber.
6. filtering needle according to claim 5 it is characterised in that: the height in described sealing gasket chamber be more than filter film thickness
With sealing mat thickness sum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610837790.8A CN106334235A (en) | 2016-09-21 | 2016-09-21 | Filter needle head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610837790.8A CN106334235A (en) | 2016-09-21 | 2016-09-21 | Filter needle head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106334235A true CN106334235A (en) | 2017-01-18 |
Family
ID=57840127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610837790.8A Pending CN106334235A (en) | 2016-09-21 | 2016-09-21 | Filter needle head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106334235A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107158523A (en) * | 2017-05-26 | 2017-09-15 | 河南曙光健士医疗器械集团股份有限公司 | A kind of syringe uses decoction macromolecule accurate filter |
| CN108379074A (en) * | 2018-02-05 | 2018-08-10 | 江苏优鼎医疗科技有限公司 | A kind of medical safe medicine taking device |
| CN109432549A (en) * | 2018-12-17 | 2019-03-08 | 山东威高集团医用高分子制品股份有限公司 | Filtering exudate syringe |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4141379A (en) * | 1977-05-16 | 1979-02-27 | Cutter Laboratories, Inc. | Check valve |
| CN1045356A (en) * | 1989-02-28 | 1990-09-19 | 株式会社日本曼迪卡·斯莱 | The injection needle assembly that is used to infuse |
| 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 |
| CN103736174A (en) * | 2014-01-26 | 2014-04-23 | 山东威高集团医用高分子制品股份有限公司 | Two-way filtration syringe |
| CN205268756U (en) * | 2016-01-08 | 2016-06-01 | 威海出入境检验检疫局 | Injector |
-
2016
- 2016-09-21 CN CN201610837790.8A patent/CN106334235A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4141379A (en) * | 1977-05-16 | 1979-02-27 | Cutter Laboratories, Inc. | Check valve |
| CN1045356A (en) * | 1989-02-28 | 1990-09-19 | 株式会社日本曼迪卡·斯莱 | The injection needle assembly that is used to infuse |
| US5041106A (en) * | 1989-02-28 | 1991-08-20 | Japan Medical Supply Co., Ltd. | Needle device for infusion |
| 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 |
| CN103736174A (en) * | 2014-01-26 | 2014-04-23 | 山东威高集团医用高分子制品股份有限公司 | Two-way filtration syringe |
| CN205268756U (en) * | 2016-01-08 | 2016-06-01 | 威海出入境检验检疫局 | Injector |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107158523A (en) * | 2017-05-26 | 2017-09-15 | 河南曙光健士医疗器械集团股份有限公司 | A kind of syringe uses decoction macromolecule accurate filter |
| CN108379074A (en) * | 2018-02-05 | 2018-08-10 | 江苏优鼎医疗科技有限公司 | A kind of medical safe medicine taking device |
| CN109432549A (en) * | 2018-12-17 | 2019-03-08 | 山东威高集团医用高分子制品股份有限公司 | Filtering exudate syringe |
| CN109432549B (en) * | 2018-12-17 | 2023-12-29 | 山东威高集团医用高分子制品股份有限公司 | Liquid outlet filtering injector |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170118 |
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| RJ01 | Rejection of invention patent application after publication |