CN105832547A - Bidirectional filter dispensing injection needle - Google Patents
Bidirectional filter dispensing injection needle Download PDFInfo
- Publication number
- CN105832547A CN105832547A CN201610368281.5A CN201610368281A CN105832547A CN 105832547 A CN105832547 A CN 105832547A CN 201610368281 A CN201610368281 A CN 201610368281A CN 105832547 A CN105832547 A CN 105832547A
- Authority
- CN
- China
- Prior art keywords
- liquid
- base plate
- batching pig
- needle
- filter
- 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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Classifications
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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 bidirectional filter dispensing injection needle. The bidirectional filter dispensing injection needle comprises a needle tube, a needle seat and a filter device, wherein the needle tube is fixedly arranged on the front end of the needle seat; the filter device is arranged in a liquid medicine passage of the needle seat; a liquid pumping passage and a liquid pushing passage which are separated from each other are formed in the filter device; inlets and outlets of the liquid pumping passage and the liquid pushing passage are both separately connected with the liquid medicine passage; filter membranes are arranged on the inlet end of the liquid pushing passage and the outlet end of the liquid pumping passage; a check valve mechanism is arranged on the inlet end of the liquid pumping passage; a one-way valve structure is arranged in the liquid pushing passage. When the bidirectional filter dispensing injection needle disclosed by the invention is used in liquid pumping and liquid pushing, liquid medicine can flow respectively in the liquid pumping passage and the liquid pushing passage, filtered impurities which are filtered out during in a liquid pumping process are isolated between in the filter membranes between the check valve mechanism, which is arranged on the inlet end of the liquid pumping passage, and the outlet end, and impurities in a liquid pushing process are isolated in an injector by the filter membrane, so that the safety of liquid pumping and liquid pushing is ensured.
Description
Technical field
The present invention relates to a kind of safe medical needling instrument, a kind of bi-directional filtered dispensation injection needle.
Background technology
At present, venous transfusion and injection are treatment means 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 pulvis.Concrete method of operating is: is inserted by syringe in medicinal liquid bottle and extracts a small amount of liquid；Then extract syringe and insert in powdered medicine bottle, liquid medicine injection is entered in powdered medicine bottle；After medicinal powder and 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 liquid in ampulla bottle, these conventional powder, productions of water medicament, deposit and often produce some particles of 3 one 5 microns in transportation, such as crystalline solid particulate, 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 medicinal powder is when making up a prescription dissolving, owing to the operating time is short, the deliquescent difference of solid medicinal powder, has partial particulate to fail to dissolve, meanwhile, when doser punctures rubber, easily makes rubber stopper damaged, produce rubber scraps and enter into the liquid.So, when using Medicine adder for injection extraction liquid, glass fragment, part medicinal powder particle or rubber scraps are also drawn into.When carrying out venous transfusion or injection to patient, these chips or particle 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 medicine company to be filtered, to ensure safety during making up a prescription.Existing dispensation injection needle common practice is to arrange a filter (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 filter (such as filter membrane) by the dispensation injection needle of this structure, if reversely injected, it is blocked in the particulate matter of filter (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 bi-directional filtered 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 bi-directional filtered dispensation injection needle, including needle tubing, needle stand and filter, 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 filter, described filter 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 described entrance point pushing away liquid passage and drawing liquid channel outlet are equipped with filter membrane, the entrance point of described drawing liquid passage is provided with check valve mechanism, described pushing away in liquid passage is provided with one-way valve structures.
Compared with prior art, the bi-directional filtered dispensation injection needle of the present invention is at drawing liquid with when pushing away liquid, liquid passes through drawing liquid passage respectively and pushes away liquid channel flow, 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, and impurity is isolated in syringe by filter membrane during pushing away liquid, it is ensured that drawing liquid and the safety pushing away 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 filter specific embodiment exploded structural representation of the present invention；
Accompanying drawing 8 is the two of filter specific embodiment exploded structural representation of the present invention.Detailed description of the invention
As Figure 1-4, bi-directional filtered dispensation injection needle includes needle tubing 1, needle stand 2 and filter 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 filter 3, described filter 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 described entrance point pushing away liquid passage and drawing liquid channel outlet are equipped 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 filter 3 includes batching pig 301, batching pig 301 frame 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 madial 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 (preferably one) is provided with 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 and pushes away on liquid channel entrance and drawing liquid channel outlet.
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 filter 3 cavity volume constituting cylinder, the internal diameter of filter 3 cavity volume matches with the external diameter of batching pig frame 302, described filter 3 is arranged in filter 3 cavity volume, wherein, the outer wall of batching pig frame 302 is liquid-tight with the madial wall of filter 3 cavity volume is affixed.
The operation principle of this bi-directional filtered dispensation injection needle is as follows: when taking out liquid, liquid is in needle tubing 1 enters filter 3 cavity volume, owing to the pressure of 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 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, liquid enters drawing liquid passage from this passage, filter through exit filter membrane 303 again, impurity is hindered in drawing liquid passage, liquid is inhaled into syringe, after stopping drawing liquid action, 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 liquid and impurity backflow；When pushing away liquid, being affixed owing to drawing liquid base plate 3012 is liquid-tight with through hole sealing surface, prevent liquid to release from drawing liquid passage, liquid can only enter and pushes away liquid passage, filter through pushing away filter membrane 303 at liquid channel entrance, impurity is hindered in syringe again, and liquid enters and pushes away liquid passage, under the pressure of liquid, transverse slat 3014 is open and opens check valve, again through pushing away the opening on liquid base plate 3013, then release from needle tubing 1, complete injection.
Claims (4)
1. a bi-directional filtered dispensation injection needle, including needle tubing, needle stand and filter, 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 filter, described filter 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 described entrance point pushing away liquid passage and drawing liquid channel outlet are equipped 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.
Bi-directional filtered dispensation injection needle the most according to claim 1, it is characterized in that: described filter 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, respectively drawing liquid base plate and push away liquid base plate by described vertical partition plate, described in push away liquid base plate and be 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 madial 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，The described entrance point pushing away liquid passage and drawing liquid channel outlet are equipped with filter membrane.
Bi-directional filtered 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 bi-directional filtered 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 filter cavity volume, and described filter is arranged in filter cavity volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610368281.5A CN105832547B (en) | 2016-05-27 | 2016-05-27 | Bi-directional filtered dispensation injection needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610368281.5A CN105832547B (en) | 2016-05-27 | 2016-05-27 | Bi-directional filtered dispensation injection needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105832547A true CN105832547A (en) | 2016-08-10 |
| CN105832547B CN105832547B (en) | 2018-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610368281.5A Active CN105832547B (en) | 2016-05-27 | 2016-05-27 | Bi-directional filtered dispensation injection needle |
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| CN (1) | CN105832547B (en) |
Cited By (4)
| 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 |
| CN106580698A (en) * | 2017-01-22 | 2017-04-26 | 山东威高集团医用高分子制品有限公司 | Air filtering needle |
| CN110353992A (en) * | 2019-07-25 | 2019-10-22 | 江苏苏云医疗器材有限公司 | A kind of dispenser or syringe filter and its filter method |
| CN114452211A (en) * | 2022-01-28 | 2022-05-10 | 深圳泰和智能医疗科技有限公司 | Dispensing filter and dispensing method thereof |
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 |
| CN206081067U (en) * | 2016-05-27 | 2017-04-12 | 浙江康德莱医疗器械股份有限公司 | Two -way filtration syringe needle that dispenses |
-
2016
- 2016-05-27 CN CN201610368281.5A patent/CN105832547B/en active Active
Cited By (7)
| 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 |
| CN106580698A (en) * | 2017-01-22 | 2017-04-26 | 山东威高集团医用高分子制品有限公司 | Air filtering needle |
| CN106580698B (en) * | 2017-01-22 | 2024-01-26 | 山东威高集团医用高分子制品有限公司 | Air filtering needle |
| CN110353992A (en) * | 2019-07-25 | 2019-10-22 | 江苏苏云医疗器材有限公司 | A kind of dispenser or syringe filter and its filter method |
| 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 |
| CN114452211A (en) * | 2022-01-28 | 2022-05-10 | 深圳泰和智能医疗科技有限公司 | Dispensing filter and dispensing method thereof |
| CN114452211B (en) * | 2022-01-28 | 2023-10-03 | 深圳泰和智能医疗科技有限公司 | Dispensing filter and dispensing method thereof |
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| Publication number | Publication date |
|---|---|
| CN105832547B (en) | 2018-07-24 |
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