CN105853227A - Unidirectional filtration safe dispensing injection needle - Google Patents
Unidirectional filtration safe dispensing injection needle Download PDFInfo
- Publication number
- CN105853227A CN105853227A CN201610364673.4A CN201610364673A CN105853227A CN 105853227 A CN105853227 A CN 105853227A CN 201610364673 A CN201610364673 A CN 201610364673A CN 105853227 A CN105853227 A CN 105853227A
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- CN
- China
- Prior art keywords
- liquid
- base plate
- batching pig
- needle
- drawing 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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- 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
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- 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 invention relates to a unidirectional filtration safe dispensing injection needle, which comprises a needle tube, a needle holder and a filtration device, wherein the needle tube is fixedly arranged at the front end of the needle holder, and the filtration device is arranged in a liquid medicine channel of the needle holder; a liquid suction channel and a liquid pushing channel which are mutually isolated are arranged in the filtration device, and inlets and outlets of the liquid suction channel and the liquid pushing channel are connected with the liquid medicine channel; a filtration film is arranged at the outlet end of the liquid suction channel, and a check valve mechanism is arranged at the inlet end of the liquid suction channel; a one-way valve structure is arranged in the liquid pushing channel. When the unidirectional filtration safe dispensing injection needle is used for sucking and pushing a liquid, the liquid medicine flows through the liquid suction channel and the liquid pushing channel respectively, and impurities filtered out in the liquid suction process are isolated between the check valve mechanism at the inlet end of the liquid suction channel and the filtration film at the outlet end, thereby both the safety of bidirectional liquid suction and pushing is ensured.
Description
Technical field
The present invention relates to a kind of safe medical needling instrument, a kind of unidirectional filtering safe type dispensation injection needle.
Background technology
At present, venous transfusion and injection are treatment meanss the most frequently used in medical treatment.Before infusing, it is often necessary to by formulated together with liquid of glucose or liquor for some powder.Concrete operational approach is: is inserted by syringe in medicinal liquid bottle and extracts a small amount of medicinal liquid；Then extract syringe and insert in powdered medicine bottle, liquid medicine injection is entered in powdered medicine bottle；After medicated powder and medicinal liquid are completely dissolved, then extract out in mixed liquor injection infusion bottle or direct suction injection tube.
But when stating Medicine adder for injection in actual use, during making up a prescription, when extracting lysate or medicinal liquid in ampulla bottle, these conventional powder, productions of water medicament, deposit and often produce some granules of 3 one 5 microns in transportation, such as crystalline solid microgranule, carbon black particle, additionally, due to delineate bottleneck with grinding wheel, the glass fragment produced when cracking bottleneck is easily fallen in medicine bottle；Solid medicated powder is when making up a prescription dissolving, owing to the operating time is short, the deliquescent difference of solid medicated powder, has partial particulate to fail to dissolve, meanwhile, when drug feeding device punctures rubber, easily makes rubber stopper damaged, produce rubber scraps and enter into the liquid.So, when using Medicine adder for injection extraction medicinal liquid, glass fragment, part medicated powder granule or rubber scraps are also drawn into.When carrying out venous transfusion or injection to patient, these chips or granule are directly entered in blood of human body, can block blood vessel with blood circulation, bring harm to patient body, even threat to life.Therefore, need Pharmaceutical to be filtered, to ensure safety during making up a prescription.Existing dispensation injection needle common practice is to arrange a defecator (such as filter membrane) in liquid-transport pipe-line to filter these solid medicine powder particles and rubber scraps etc., solid medicine powder particles and rubber scraps etc. can only be blocked in the side of defecator (such as filter membrane) by the dispensation injection needle of this structure, if reversely injected, it is blocked in the particulate matter of defecator (such as filter membrane) side, will reflux, bring harm to patient body；Other be also additionally arranged check valve with prevent flow backwards, these needle sets be only applicable to extract liquid medicine dispensation, it is impossible to be suitable for being reversed pushing away liquid simultaneously.
Summary of the invention
It is an object of the invention to provide a kind of unidirectional filtering safe type dispensation injection needle being simultaneously suitable for drawing liquid and pushing away liquid to overcome the deficiencies in the prior art.
To achieve these goals, the invention discloses a kind of unidirectional filtering safe type dispensation injection needle, including needle tubing, needle stand and defecator, needle tubing is fixed on the front end of needle stand, it is characterized in that: the medicine liquid channel of described needle stand is provided with defecator, described defecator is provided with mutually isolated drawing liquid passage and pushes away liquid passage, drawing liquid passage and the import and export pushing away liquid passage are all connected with medicine liquid channel, the port of export of described drawing liquid passage is provided with filter membrane, the entrance point of described drawing liquid passage is provided with check valve mechanism, described in push away in liquid passage and be provided with one-way valve structures.
Compared with prior art, the present invention unidirectional filtering safe type dispensation injection needle is at drawing liquid with when pushing away liquid, medicinal liquid passes through drawing liquid passage respectively and pushes away liquid channel flow, and the impurity being filtered out during drawing liquid is isolated between check valve mechanism and the filter membrane of the port of export of drawing liquid channel entrance end, it is ensured that push away the safety of liquid.
Below in conjunction with the accompanying drawings and specific embodiment the invention will be further described.
Accompanying drawing explanation
Accompanying drawing 1 is specific embodiment of the invention stereoscopic structural representation；
Accompanying drawing 2 is specific embodiment of the invention front view；
Accompanying drawing 3 is accompanying drawing 2 A-A structure sectional view；
Accompanying drawing 4 is accompanying drawing 3 I portion partial enlarged drawing；
Accompanying drawing 5 is one of specific embodiment of the invention exploded structural representation；
Accompanying drawing 6 is the two of specific embodiment of the invention exploded structural representation；
Accompanying drawing 7 is one of defecator specific embodiment exploded structural representation of the present invention；
Accompanying drawing 8 is the two of defecator specific embodiment exploded structural representation of the present invention.Detailed description of the invention
As Figure 1-4, unidirectional filtering safe type dispensation injection needle includes needle tubing 1, needle stand 2 and defecator 3, needle tubing 1 is fixed on the front end of needle stand 2, the medicine liquid channel of described needle stand 2 is provided with defecator 3, described defecator 3 is provided with mutually isolated drawing liquid passage and pushes away liquid passage, drawing liquid passage and the import and export pushing away liquid passage are all connected with medicine liquid channel, the port of export of described drawing liquid passage is provided with filter membrane, the entrance point of described drawing liquid passage is provided with check valve mechanism, described in push away in liquid passage and be provided with one-way valve structures.
Such as Fig. 7, shown in 8, in this specific embodiment, described defecator 3 includes batching pig 301, batching pig frame 302 and filter membrane 303, described batching pig 301 includes a base plate, base plate one side center is provided with vertical partition plate 3011, base plate is divided into left and right two parts by described vertical partition plate 3011, it is respectively drawing liquid base plate 3012 and pushes away liquid base plate 3013, the described liquid base plate 3013 that pushes away is provided with opening, described vertical partition plate 3011 upper end pushes away liquid base plate 3013 side and is provided with the transverse slat 3014 protruded horizontally up, described batching pig 301 is made into integration by soft elastic material, such as medical grade rubber or silica gel；Described batching pig frame 302 is similarly the cylindrical member of before and after's opening, and shape of cross section and the size of described batching pig frame 302 match with base plate.Described base plate is preferably circular, and described batching pig frame 302 is the cylindrical structural member of front and back's opening, and described batching pig frame 302 axial length is more than the height of vertical partition plate 3011 so that internal space of containing arranges longitudinal baffle 3021.nullThe vertical partition plate 3011 of described batching pig 301 stretches into towards one end (front end) of needle tubing 1 from batching pig frame 302 and is arranged on batching pig frame 302，And the base plate of described batching pig 301 is liquid-tight with batching pig frame 302 annular end face is affixed，Batching pig frame 302 two ends end face and inwall want flat smooth，Be conducive to improving sealing，The dual-side of vertical partition plate 3011 and batching pig frame 302 medial wall be liquid-tight to be affixed (can be to take slightly in the way of interference fit)，The described batching pig frame 302 inner chamber other end is provided with (preferably one) longitudinal baffle 3021，Described longitudinal baffle 3021 position is relative with vertical partition plate 3011，Described longitudinal baffle 3021 and vertical partition plate 3011 position are preferably in center，The top of described longitudinal baffle 3021 offsets with vertical partition plate 3011 top，The other end of longitudinal baffle 3021 flushes with batching pig frame 302 end，Described batching pig frame 302 inner chamber is separated into equal two parts by described longitudinal baffle 3021 and vertical partition plate 3011 jointly，Side corresponding with drawing liquid base plate 3012 constitutes described drawing liquid passage，Side corresponding with pushing away liquid base plate 3013 pushes away liquid passage described in constituting.Described batching pig frame 302 pushes away the position that liquid vias inner walls flushes with transverse slat 3014 be provided with two ends and extend to longitudinal baffle 3021, protruding back-up ring 3022, described transverse slat 3014 is attached on described back-up ring 3022 end face constitute described one-way valve structures, described batching pig frame 302 is provided with arc notch 3023 with the sidewall of drawing liquid base plate 3012 phase close neighbour, the setting of told arc notch 3023, make during the base plate drawing liquid again of drawing liquid side, have space to open for it, thus open drawing liquid passage, the opposite side of described drawing liquid side base plate is provided with the sealing surface 203 matched with drawing liquid base plate 3012 and constitutes described check valve mechanism, described filter membrane 303 is enclosed in the outlet of drawing liquid passage.
As shown in Figure 5,6, produce for convenience, described needle stand 2 is preferably made up of front needle seat 2 and rear needle stand 2, described needle tubing 1 is fixed on the front end of front needle seat 2, the rear end of described front needle seat 2 is provided with cylinder open cavity volume, opening cavity volume end face center is provided with and the through hole of front end needle tubing 1 UNICOM, and described through hole peripheral circular plane constitutes described sealing surface 203；The front end of described rear needle stand 2 is again provided with cylinder open cavity volume, described front needle seat 2 is relative with the cavity volume opening of rear needle stand 2 to be merged to form and is integrally formed needle stand 2, the cavity volume of described front needle seat 2 and rear needle stand 2 merges defecator 3 cavity volume constituting cylinder, the internal diameter of defecator 3 cavity volume matches with the external diameter of batching pig frame 302, described defecator 3 is arranged in defecator 3 cavity volume, wherein, the outer wall of batching pig frame 302 is liquid-tight with the medial wall of defecator 3 cavity volume is affixed.
The operation principle of this unidirectional filtering safe type dispensation injection needle is as follows: when taking out medicinal liquid, medicinal liquid is in needle tubing 1 enters defecator 3 cavity volume, owing to the pressure of medicinal liquid makes the liquid-tight phase of transverse slat 3014 be attached to cannot be introduced into pushing away on back-up ring 3022 end face the other end of liquid passage, and under the pressure of medicinal liquid, the drawing liquid base plate 3012 that described soft elastic material is made is pressed towards arc notch 3023 side, and and passage occurs between the sidewall of batching pig frame 302, medicinal liquid enters drawing liquid passage from this passage, filter through exit filter membrane 303 again, impurity is hindered in drawing liquid passage, medicinal liquid is inhaled into syringe, after stopping drawing liquid action, medicinal liquid distress resolves, drawing liquid base plate 3012 recovers liquid-tight with the sealing surface of through hole peripheral circular plane composition and is affixed, stop medicinal liquid and impurity backflow；When pushing away medicinal liquid, it is affixed owing to drawing liquid base plate 3012 is liquid-tight with through hole sealing surface, medicinal liquid is prevented to release from drawing liquid passage, medicinal liquid can only enter and pushes away liquid passage, under the pressure of medicinal liquid, transverse slat 3014 is open and opens check valve, then through pushing away the opening on liquid base plate 3013, release from needle tubing 1 again, complete injection.
Claims (4)
1. a unidirectional filtering safe type dispensation injection needle, including needle tubing, needle stand and defecator, needle tubing is fixed on the front end of needle stand, it is characterized in that: the medicine liquid channel of described needle stand is provided with defecator, described defecator is provided with mutually isolated drawing liquid passage and pushes away liquid passage, drawing liquid passage and the import and export pushing away liquid passage are all connected with medicine liquid channel, the port of export of described drawing liquid passage is provided with filter membrane, the entrance point of described drawing liquid passage is provided with check valve mechanism, described in push away in liquid passage and be provided with one-way valve structures.
Unidirectional filtering safe type dispensation injection needle the most according to claim 1, it is characterized in that: described defecator includes batching pig, batching pig frame and filter membrane, described batching pig includes a base plate, base plate one side center is provided with vertical partition plate, base plate is divided into left and right two parts by described vertical partition plate, it is respectively drawing liquid base plate and pushes away liquid base plate, the described liquid base plate that pushes away is provided with opening, described vertical partition plate upper end pushes away liquid base plate side and is provided with the transverse slat protruded horizontally up, and described batching pig is made up of soft elastic material；nullDescribed batching pig frame is similarly the cylindrical member of before and after's opening，Shape of cross section and the size of described batching pig frame match with base plate，Axial length is more than the height of vertical partition plate，The vertical partition plate of described batching pig stretches into towards one end of needle tubing from batching pig frame and is arranged on batching pig frame，And the base plate of described batching pig is liquid-tight with batching pig frame annular end face is affixed，The dual-side of vertical partition plate is liquid-tight with batching pig frame medial wall to be affixed，The described batching pig frame inner chamber other end is provided with longitudinal baffle，Described longitudinal baffle position is relative with vertical partition plate，The top of described longitudinal baffle and vertical partition plate top offset and described batching pig frame inner chamber are separated into two parts，Side corresponding with drawing liquid base plate constitutes described drawing liquid passage，Side corresponding with pushing away liquid base plate pushes away liquid passage described in constituting，The position that described batching pig frame inwall flushes with transverse slat is provided with two ends and extends to longitudinal baffle、Protruding back-up ring，Described transverse slat is attached on described back-up ring end face constitute described one-way valve structures，Described batching pig frame is provided with arc notch with the sidewall of drawing liquid base plate phase close neighbour，The opposite side of described drawing liquid side base plate is provided with the sealing surface matched with drawing liquid base plate and constitutes described check valve mechanism，Described filter membrane is enclosed in the outlet of drawing liquid passage.
Unidirectional filtering safe type dispensation injection needle the most according to claim 2, it is characterised in that: described base plate is circular, and described batching pig frame is the cylindrical structural member of before and after's opening.
4. according to the unidirectional filtering safe type dispensation injection needle described in Claims 2 or 3, it is characterized in that: described needle stand is made up of front needle seat and rear needle stand, described needle tubing is fixed on the front end of front needle seat, the rear end of described front needle seat is provided with cylinder open cavity volume, opening cavity volume end face center is provided with and the through hole of front end needle tubing UNICOM, and described through hole peripheral circular plane constitutes described sealing surface；The front end of described rear needle stand is again provided with cylinder open cavity volume, described front needle seat is relative with the cavity volume opening of rear needle stand to be merged to form and is integrally formed needle stand, the cavity volume of described front needle seat and rear needle stand merges composition defecator cavity volume, and described defecator is arranged in defecator cavity volume.
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 true CN105853227A (en) | 2016-08-17 |
| CN105853227B CN105853227B (en) | 2018-08-21 |
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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 |
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| Country | Link |
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| CN (1) | CN105853227B (en) |
Cited By (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 |
Family Cites Families (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 |
| CN103721321B (en) * | 2014-01-26 | 2015-12-02 | 山东威高集团医用高分子制品股份有限公司 | A kind of automatic fitration syringe |
| 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
Cited By (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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105853227B (en) | 2018-08-21 |
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