CN105832547B - Bi-directional filtered dispensation injection needle - Google Patents

Bi-directional filtered dispensation injection needle Download PDF

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Publication number
CN105832547B
CN105832547B CN201610368281.5A CN201610368281A CN105832547B CN 105832547 B CN105832547 B CN 105832547B CN 201610368281 A CN201610368281 A CN 201610368281A CN 105832547 B CN105832547 B CN 105832547B
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China
Prior art keywords
liquid channel
bottom plate
needle
liquid
batching pig
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CN201610368281.5A
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CN105832547A (en
Inventor
张谦
陈洪
陈云飞
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Zhejiang Kindly Medical Devices Co Ltd
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Zhejiang Kindly Medical Devices Co Ltd
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Priority to CN201610368281.5A priority Critical patent/CN105832547B/en
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61JCONTAINERS 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
    • A61J1/00Containers specially adapted for medical or pharmaceutical purposes
    • A61J1/14Details; Accessories therefor
    • A61J1/20Arrangements for transferring or mixing fluids, e.g. from vial to syringe
    • A61J1/2003Accessories used in combination with means for transfer or mixing of fluids, e.g. for activating fluid flow, separating fluids, filtering fluid or venting
    • A61J1/2079Filtering means
    • A61J1/2086Filtering means for fluid filtration
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61JCONTAINERS 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
    • A61J1/00Containers specially adapted for medical or pharmaceutical purposes
    • A61J1/14Details; Accessories therefor
    • A61J1/20Arrangements for transferring or mixing fluids, e.g. from vial to syringe
    • A61J1/2003Accessories used in combination with means for transfer or mixing of fluids, e.g. for activating fluid flow, separating fluids, filtering fluid or venting
    • A61J1/2006Piercing means
    • A61J1/201Piercing 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

Include needle tubing, needle stand and filter device the present invention relates to a kind of bi-directional filtered dispensation injection needle, needle tubing is fixed on the front end of needle stand, filter device is equipped in the medicine liquid channel of the needle stand, mutually isolated drawing liquid channel and propulsive liquid channel are equipped in the filter device, the inlet and outlet in drawing liquid channel and propulsive liquid channel are connect with medicine liquid channel, the input end and drawing liquid channel outlet in the propulsive liquid channel are equipped with filter membrane, the input end in the drawing liquid channel is equipped with check valve mechanism, and one-way valve structures are equipped in the propulsive liquid channel.This bi-directional filtered dispensation injection needle is in drawing liquid and propulsive liquid, liquid is flowed by drawing liquid channel and propulsive liquid channel respectively, the impurity being filtered out during drawing liquid is isolated between the check valve mechanism and the filter membrane of outlet end at drawing liquid channel entrance end, and impurity is isolated in by filter membrane in syringe during propulsive liquid, ensure that the safety of drawing liquid and propulsive liquid.

Description

Bi-directional filtered dispensation injection needle
Technical field
The present invention relates to a kind of safe medical needling instrument, especially a kind of bi-directional filtered dispensation injection needle.
Background technology
Currently, venous transfusion and injection are most common treatment means in medical treatment.Before being infused, it is often necessary to will Some pulvis and liquid of glucose or liquor are formulated together.Specifically operating method is:Syringe is inserted into medicinal liquid bottle Extract a small amount of liquid;Then it extracts syringe and is inserted into powdered medicine bottle, liquid medicine injection is entered in powdered medicine bottle;Wait for that medicinal powder is complete with liquid After fully dissolved, then extracts mixed liquor injection infusion bottle out or be directly pumped into injection tube.
But when stating Medicine adder for injection in actual use, during making up a prescription, when lysate or medicine in extraction ampulla bottle When liquid, some 3 one 5 microns particles are often will produce in these common powder, the production of water medicament, storage and transportational process, As crystalline solid particle, carbon black particle crack the glass fragment generated when bottleneck and are easy further, since delineating bottleneck with grinding wheel It falls into medicine bottle;Solid medicinal powder is when making up a prescription dissolving, since the operating time is short, the deliquescent difference of solid medicinal powder, there is part Grain fails to dissolve, meanwhile, when doser punctures rubber, easily make rubber stopper damaged, generates rubber scraps into the liquid.This Sample, when extracting liquid using Medicine adder for injection, glass fragment, part medicinal powder particle or rubber scraps are also drawn into.To When patient carries out venous transfusion or injection, these clasts or particle are directly entered in blood of human body, can be blocked with blood circulation Blood vessel brings harm or even threat to life to patient body.Therefore, it needs to be filtered medicine company during making up a prescription, to protect Card safety.Existing dispensation injection needle common practice is one filter device of setting in liquid-transport pipe-line(Such as filter membrane)To this A little solid medicinal powder particles and rubber scraps etc. are filtered, and the dispensation injection needle of this structure can only be by solid medicinal powder particle and rubber Glue clast etc. is blocked in filter device(Such as filter membrane)Side be blocked in filter device if when reversed injection(Such as filtering Film)The particulate matter of side will flow back, and harm is brought to patient body;Other are also additionally arranged check valve to prevent from flowing backwards, this A little needle sets are only applicable to extract liquid medicine dispensation, cannot be suitble to be reversed propulsive liquid simultaneously.
Invention content
It is an object of the invention to provide and a kind of suitable for drawing liquid and push away simultaneously for overcome the deficiencies in the prior art The bi-directional filtered dispensation injection needle of liquid.
To achieve the goals above, the invention discloses a kind of bi-directional filtered dispensation injection needles, including needle tubing, needle stand and mistake Device is filtered, 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, it is described It is equipped with mutually isolated drawing liquid channel and propulsive liquid channel in filter device, the inlet and outlet in drawing liquid channel and propulsive liquid channel are and liquid Channel connects, and the input end and drawing liquid channel outlet in the propulsive liquid channel are equipped with filter membrane, the import in the drawing liquid channel End is equipped with check valve mechanism, and one-way valve structures are equipped in the propulsive liquid channel.
Compared with prior art, in drawing liquid and propulsive liquid, liquid passes through the bi-directional filtered dispensation injection needle of the present invention respectively Drawing liquid channel and the flowing of propulsive liquid channel, the impurity being filtered out during drawing liquid are isolated in the non-return at drawing liquid channel entrance end Between valve system and the filter membrane of outlet end, and impurity is isolated in by filter membrane in syringe during propulsive liquid, ensure that pumping The safety of liquid and propulsive liquid.
Below in conjunction with the accompanying drawings and specific embodiment the invention will be further described.
Description of the drawings
Attached drawing 1 is specific embodiment of the invention stereoscopic structural schematic diagram;
Attached drawing 2 is specific embodiment of the invention front view;
Attached drawing 3 is 2 A-A structure sectional views of attached drawing;
Attached drawing 4 is 3 portions I partial enlarged view of attached drawing;
Attached drawing 5 is one of specific embodiment of the invention exploded structural schematic diagram;
Attached drawing 6 is specific embodiment of the invention exploded second structural representation;
Attached drawing 7 is one of filter device specific embodiment exploded structural schematic diagram of the present invention;
Attached drawing 8 is filter device specific embodiment exploded second structural representation of the present invention.Specific implementation mode
As shown in Figs 1-4, bi-directional filtered dispensation injection needle includes needle tubing 1, needle stand 2 and filter device 3, and needle tubing 1 is fixed on The front end of needle stand 2 is equipped with filter device 3 in the medicine liquid channel of the needle stand 2, is equipped in the filter device 3 mutually isolated The inlet and outlet in drawing liquid channel and propulsive liquid channel, drawing liquid channel and propulsive liquid channel are connect with medicine liquid channel, the propulsive liquid channel Input end and drawing liquid channel outlet are equipped with filter membrane, and the input end in the drawing liquid channel is equipped with check valve mechanism, described to push away One-way valve structures are equipped in liquid channel.
As shown in Figure 7,8, in this specific embodiment, the filter device 3 includes batching pig 301,301 frame of batching pig and mistake Filter membrane 303, the batching pig 301 include a bottom plate, and bottom plate one side center is equipped with vertical partition plate 3011, the vertical partition plate Bottom plate is divided into left and right two parts, respectively drawing liquid bottom plate 3012 and propulsive liquid bottom plate 3013 by 3011, and the propulsive liquid bottom plate 3013 is set There are opening, 3011 upper end propulsive liquid bottom plate of the vertical partition plate, 3013 side to be equipped with the transverse slat 3014 protruded horizontally up, the batching pig 301 are made into integration by soft elastic material, such as medical grade rubber or silica gel;The batching pig frame 302 is similarly the front and back cylinder being open Shape component, cross-sectional shape and size and the bottom plate of the batching pig frame 302 match.The bottom plate is preferably circular, it is described every From the cylindrical structural member that plug frame 302 is front and back opening, 302 axial length of batching pig frame is more than the height of vertical partition plate 3011 Degree so that longitudinal baffle 3021 is arranged containing space in inside.The vertical partition plate 3011 of the batching pig 301 is from batching pig frame 302 Towards one end of needle tubing 1(Front end)It stretches into and is arranged in batching pig frame 302, and the bottom plate of the batching pig 301 and batching pig frame 302 annular end faces are liquid-tight to be affixed, and 302 both ends end face of batching pig frame and inner wall want flat smooth, is conducive to improve leakproofness, vertically The two sides of partition board 3011 with 302 madial wall of batching pig frame is liquid-tight is affixed(The mode being slightly interference fitted can be taken), described The 302 inner cavity other end of batching pig frame(It is preferred that being integrated)Equipped with longitudinal baffle 3021,3021 position of the longitudinal baffle with it is vertical Partition board 3011 is opposite, and the longitudinal baffle 3021 and 3011 position of vertical partition plate are preferably in center, the longitudinal baffle 3021 Top offset with 3011 top of vertical partition plate, the other end of longitudinal baffle 3021 is flushed with 302 end of batching pig frame, described vertical 302 inner cavity of batching pig frame is separated into equal two parts jointly to partition board 3021 and vertical partition plate 3011, with drawing liquid bottom 3012 corresponding side of plate constitutes the drawing liquid channel, and side corresponding with propulsive liquid bottom plate 3013 constitutes the propulsive liquid channel.Institute State propulsive liquid vias inner walls are flushed with transverse slat 3014 in batching pig frame 302 position be equipped with both ends extend to longitudinal baffle 3021, The baffle ring 3022 of protrusion, the transverse slat 3014, which is attached on 3022 end face of the baffle ring, constitutes the one-way valve structures, the isolation It fills in frame 302 and the side wall of 3012 phase close neighbour of drawing liquid bottom plate is equipped with arc notch 3023, the setting of told arc notch 3023 so that Drawing liquid side bottom plate again drawing liquid when have space for its opening, to open drawing liquid channel, the other side of drawing liquid side bottom plate is equipped with The sealing surface 203 to match with drawing liquid bottom plate 3012 constitutes the check valve mechanism, the filter membrane 303 be enclosed in propulsive liquid channel into On mouth and drawing liquid channel outlet.
As shown in Figure 5,6, it produces for convenience, the needle stand 2 is preferably made of front needle seat 2 and rear needle stand 2, the needle tubing 1 is fixed on the front end of front needle seat 2, and the rear end of the front needle seat 2 is equipped with cylinder open vessel, and opening vessel end face center is equipped with With the through-hole of 1 unicom of front end needle tubing, the through-hole peripheral circular plane constitutes the sealing surface 203;The front end of needle stand 2 after described It is again provided with cylinder open vessel, the opposite merging of vessel opening of the front needle seat 2 and rear needle stand 2, which forms, is integrally formed needle stand 2, the vessel merging of the front needle seat 2 and rear needle stand 2 constitutes cylindrical 3 vessel of filter device, the internal diameter of 3 vessel of filter device Match with the outer diameter of batching pig frame 302, the filter device 3 is arranged in 3 vessel of filter device, wherein batching pig frame 302 The madial wall of outer wall and 3 vessel of filter device is liquid-tight to be affixed.
The operation principle of this bi-directional filtered dispensation injection needle is as follows:When taking out liquid, liquid enters filter device by needle tubing 1 In 3 vessels, propulsive liquid channel cannot be introduced into since the pressure of liquid makes 3014 liquid-tight phase of transverse slat be attached on 3022 end face of baffle ring The other end, and under the pressure of liquid, drawing liquid bottom plate 3012 made of the soft elastic material is pressed towards arc notch 3023 Side, and occur channel between the side wall of batching pig frame 302, liquid enters drawing liquid channel from the channel, using exit Filter membrane 303 filters, and impurity is hindered in drawing liquid channel, and liquid is inhaled into syringe, and after stopping drawing liquid action, liquid pressure disappears It loses, drawing liquid bottom plate 3012 restores that the sealing surface constituted with through-hole peripheral circular plane is liquid-tight to be affixed, and prevention liquid and impurity flow back; When pushing away liquid, due to drawing liquid bottom plate 3012 with through-hole sealing surface is liquid-tight is affixed, prevent liquid to be released from drawing liquid channel, liquid is only Propulsive liquid channel can be entered, filtered by filter membrane 303 at propulsive liquid channel entrance, then impurity is hindered in syringe, liquid enters Propulsive liquid channel, under the pressure of liquid, transverse slat 3014, which is open, opens check valve, using the opening on propulsive liquid bottom plate 3013, It is released again from needle tubing 1, completes injection.

Claims (3)

1. a kind of bi-directional filtered dispensation injection needle, including needle tubing, needle stand and filter device, needle tubing are fixed on the front end of needle stand, It is characterized in that:Filter device is equipped in the medicine liquid channel of the needle stand, it is logical to be equipped with mutually isolated drawing liquid in the filter device The inlet and outlet in road and propulsive liquid channel, drawing liquid channel and propulsive liquid channel are connect with medicine liquid channel, the input end in the propulsive liquid channel And drawing liquid channel outlet is equipped with filter membrane, the input end in the drawing liquid channel is equipped with check valve mechanism, the propulsive liquid channel In be equipped with one-way valve structures;The filter device includes batching pig, batching pig frame and filter membrane, and the batching pig includes a bottom Plate, bottom plate one side center are equipped with vertical partition plate, and bottom plate is divided into left and right two parts, respectively drawing liquid bottom plate by the vertical partition plate With propulsive liquid bottom plate, the propulsive liquid bottom plate is equipped with opening, and vertical partition plate upper end propulsive liquid bottom plate side is equipped with the cross protruded horizontally up Plate, the batching pig are made of soft elastic material;The batching pig frame is similarly the front and back cylindrical member being open, the isolation The cross-sectional shape and size and bottom plate for filling in frame match, and axial length is more than the height of vertical partition plate, the batching pig it is vertical The one end of partition board from batching pig frame towards needle tubing, which is stretched into, to be arranged in batching pig frame, and the bottom plate of the batching pig and batching pig frame Annular end face is liquid-tight to be affixed, the two sides of vertical partition plate with batching pig frame madial wall is liquid-tight is affixed, batching pig frame inner cavity is another One end is equipped with longitudinal baffle, and the longitudinal baffle position is opposite with vertical partition plate, the top of the longitudinal baffle and vertical partition plate Top offsets is separated into two parts by batching pig frame inner cavity, and side corresponding with drawing liquid bottom plate constitutes the drawing liquid channel, Side corresponding with propulsive liquid bottom plate constitutes the propulsive liquid channel, and the position that the batching pig frame inner wall is flushed with transverse slat is equipped with both ends Longitudinal baffle, raised baffle ring is extended to, the transverse slat is attached on the baffle ring end face and constitutes the one-way valve structures, described Batching pig frame and the side wall of drawing liquid bottom plate phase close neighbour are equipped with arc notch, and the other side of the drawing liquid bottom plate is equipped with and drawing liquid bottom plate The sealing surface of matching constitutes the check valve mechanism.
2. bi-directional filtered dispensation injection needle according to claim 1, it is characterised in that:The bottom plate be circle, it is described every From the cylindrical structural member that plug frame is front and back opening.
3. bi-directional filtered dispensation injection needle according to claim 1 or 2, it is characterised in that:The needle stand by front needle seat and Needle stand forms afterwards, and 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 vessel, opening Vessel end face center is equipped with the through-hole with front end needle tubing unicom, and the through-hole peripheral circular plane constitutes the sealing surface;It is described The front end of needle stand is again provided with cylinder open vessel afterwards, and the opposite merging of vessel opening of the front needle seat and rear needle stand forms one Body constitutes needle stand, and the vessel merging of the front needle seat and rear needle stand constitutes filter device vessel, and the filter device is arranged in mistake It filters in device vessel.
CN201610368281.5A 2016-05-27 2016-05-27 Bi-directional filtered dispensation injection needle Active CN105832547B (en)

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Application Number Priority Date Filing Date Title
CN201610368281.5A CN105832547B (en) 2016-05-27 2016-05-27 Bi-directional filtered dispensation injection needle

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Application Number Priority Date Filing Date Title
CN201610368281.5A CN105832547B (en) 2016-05-27 2016-05-27 Bi-directional filtered dispensation injection needle

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CN105832547A CN105832547A (en) 2016-08-10
CN105832547B true CN105832547B (en) 2018-07-24

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
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
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
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
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

Citations (8)

* Cited by examiner, † Cited by third party
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
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

Patent Citations (8)

* Cited by examiner, † Cited by third party
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
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

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