CN105919806B - Dispensation injection needle with unidirectional filtering function - Google Patents
Dispensation injection needle with unidirectional filtering function Download PDFInfo
- Publication number
- CN105919806B CN105919806B CN201610364727.7A CN201610364727A CN105919806B CN 105919806 B CN105919806 B CN 105919806B CN 201610364727 A CN201610364727 A CN 201610364727A CN 105919806 B CN105919806 B CN 105919806B
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- China
- Prior art keywords
- liquid channel
- needle
- bottom plate
- batching pig
- liquid
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/3145—Filters incorporated in syringes
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Heart & Thoracic Surgery (AREA)
- Anesthesiology (AREA)
- Engineering & Computer Science (AREA)
- Vascular Medicine (AREA)
- Pharmacology & Pharmacy (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The present invention relates to a kind of dispensation injection needles with unidirectional filtering function, including needle tubing, needle stand and filter device, 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 in the propulsive liquid channel is 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 has the dispensation injection needle of unidirectional filtering function in drawing liquid and propulsive liquid, and liquid is flowed by drawing liquid channel and propulsive liquid channel respectively, and impurity is isolated in by filter membrane in syringe during propulsive liquid, ensure that the safety of drawing liquid and propulsive liquid.
Description
Technical field
The present invention relates to a kind of safe medical needling instrument, especially a kind of dispensation injection needle with unidirectional filtering function.
Background technology
Currently, venous transfusion and injection are most common treatment means in medical treatment.It is being infused
Before, it is often necessary to which some pulvis and liquid of glucose or liquor are formulated together.Specifically
Operating method be：Syringe is inserted into medicinal liquid bottle and extracts a small amount of liquid；Then note is extracted
Emitter is simultaneously inserted into powdered medicine bottle, and liquid medicine injection is entered in powdered medicine bottle；Wait for that medicinal powder is completely dissolved with liquid
Afterwards, it then extracts mixed liquor injection infusion bottle out or is 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 dispensation injection needle with unidirectional filtering function of liquid.
To achieve the goals above, the invention discloses a kind of dispensation injection needles with unidirectional filtering function, including needle
Pipe, needle stand and filter device, needle tubing are fixed on the front end of needle stand, it is characterised in that：It was equipped in the medicine liquid channel of the needle stand
Filter device, be equipped with mutually isolated drawing liquid channel and propulsive liquid channel in the filter device, drawing liquid channel and propulsive liquid channel into
Outlet is connect with medicine liquid channel, and the input end in the propulsive liquid channel is equipped with filter membrane, and the input end in the drawing liquid channel is equipped with
Check valve mechanism is equipped with one-way valve structures in the propulsive liquid channel.
Compared with prior art, the present invention has the dispensation injection needle of unidirectional filtering function in drawing liquid and propulsive liquid, medicine
Liquid is flowed by drawing liquid channel and propulsive liquid channel respectively, and impurity is isolated in by filter membrane in syringe during propulsive liquid, is protected
The safety of drawing liquid and propulsive liquid is demonstrate,proved.
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, the dispensation injection needle with unidirectional filtering function includes needle tubing 1, needle stand 2 and filter device 3, needle
Pipe 1 is fixed on the front end of needle stand 2, and filter device 3 is equipped in the medicine liquid channel of the needle stand 2, phase is equipped in the filter device 3
The inlet and outlet in the drawing liquid channel and propulsive liquid channel being mutually isolated, drawing liquid channel and propulsive liquid channel are connect with medicine liquid channel, described to push away
The input end in liquid channel is equipped with filter membrane, and the input end in the drawing liquid channel is equipped with check valve mechanism, is set in the propulsive liquid channel
There are one-way valve structures.
As shown in Figure 7,8, in this specific embodiment, the filter device 3 includes batching pig 301, batching pig frame 302 and mistake
Filter membrane 303, the batching pig 301 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
Constitute the check valve mechanism with the sealing surface that drawing liquid bottom plate 3012 matches, the filter membrane 303 be enclosed in propulsive liquid channel into
On mouth.
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.
This has the operation principle of the dispensation injection needle of unidirectional filtering function as follows：Take out liquid when, liquid by needle tubing 1 into
Enter in 3 vessel of filter device, 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 in propulsive liquid channel, and under the pressure of liquid, drawing liquid bottom plate 3012 made of the soft elastic material is pressed towards arc
3023 side of v notch v, and occur channel between the side wall of batching pig frame 302, liquid enters drawing liquid channel, medicine from the channel
Liquid is taken directly syringe, and after stopping drawing liquid action, liquid pressure disappears, and drawing liquid bottom plate 3012 restores and through-hole peripheral circular
The sealing surface 203 of plane composition is liquid-tight to be affixed, and liquid and impurity reflux are prevented；When pushing away liquid, due to drawing liquid bottom plate 3012 and lead to
Hole sealing surface 203 is liquid-tight to be affixed, and liquid is prevented to be released from drawing liquid channel, and liquid can only enter propulsive liquid channel, logical by propulsive liquid
Road entrance filter membrane 303 filters, then impurity is hindered in syringe, and liquid enters propulsive liquid channel, horizontal under the pressure of liquid
Plate 3014, which is open, opens check valve, is released using the opening on propulsive liquid bottom plate 3013, then from needle tubing 1, completes injection.
Claims (3)
1. a kind of dispensation injection needle with unidirectional filtering function, including needle tubing, needle stand and filter device, needle tubing are fixed on needle stand
Front end, it is characterised in that：It is equipped with filter device in the medicine liquid channel of the needle stand, is equipped in the filter device mutually isolated
Drawing liquid channel and propulsive liquid channel, the inlet and outlet in drawing liquid channel and propulsive liquid channel connect with medicine liquid channel, the propulsive liquid channel
Input end be equipped with filter membrane, the input end in the drawing liquid channel is equipped with check valve mechanism, is equipped in the propulsive liquid channel unidirectional
Valve arrangement；The filter device includes batching pig, batching pig frame and filter membrane, and the batching pig includes a bottom plate, bottom plate one
Center side is equipped with vertical partition plate, and bottom plate is divided into left and right two parts, respectively drawing liquid bottom plate and propulsive liquid bottom by the vertical partition plate
Plate, the propulsive liquid bottom plate are equipped with opening, and vertical partition plate upper end propulsive liquid bottom plate side is equipped with the transverse slat that protrudes horizontally up, it is described every
It is made of soft elastic material from plug；The batching pig frame is similarly the front and back cylindrical member being open, the cross of the batching pig frame
Cross sectional shape and size match with bottom plate, and axial length is more than the height of vertical partition plate, the vertical partition plate of the batching pig from every
One end from plug 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
It is liquid-tight to be affixed, the two sides of vertical partition plate with batching pig frame madial wall is liquid-tight is affixed, the batching pig frame inner cavity other end is equipped with
Longitudinal baffle, the longitudinal baffle position is opposite with vertical partition plate, and top and the vertical partition plate top of the longitudinal baffle offset
Batching pig frame inner cavity is separated into two parts, side corresponding with drawing liquid bottom plate constitutes the drawing liquid channel, with propulsive liquid bottom
The corresponding side of plate constitutes the propulsive liquid channel, and the position that the batching pig frame inner wall is flushed with transverse slat extends to vertical equipped with both ends
To partition board, raised baffle ring, the transverse slat, which is attached on the baffle ring end face, constitutes the one-way valve structures, the batching pig frame
It is equipped with arc notch with the side wall of drawing liquid bottom plate phase close neighbour, the other side of the drawing liquid bottom plate is close equipped with matching with drawing liquid bottom plate
Cover constitutes the check valve mechanism.
2. the dispensation injection needle according to claim 1 with unidirectional filtering function, it is characterised in that：The bottom plate is circle
Shape, the batching pig frame are the cylindrical structural member of front and back opening.
3. the dispensation injection needle according to claim 1 or 2 with unidirectional filtering function, it is characterised in that：The needle stand
It is made of front needle seat and rear needle stand, the needle tubing is fixed on the front end of front needle seat, and the rear end of the front needle seat is opened equipped with cylinder
Mouthful vessel, opening vessel end face center are equipped with the through-hole with front end needle tubing unicom, described in the through-hole peripheral circular plane is constituted
Sealing surface；The front end of needle stand is again provided with cylinder open vessel, the vessel opening phase of the front needle seat and rear needle stand after described
To merging into needle stand is integrally formed, the vessel merging of the front needle seat and rear needle stand constitutes filter device vessel, the filtering
Device is arranged in filter device vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610364727.7A CN105919806B (en) | 2016-05-27 | 2016-05-27 | Dispensation injection needle with unidirectional filtering function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610364727.7A CN105919806B (en) | 2016-05-27 | 2016-05-27 | Dispensation injection needle with unidirectional filtering function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105919806A CN105919806A (en) | 2016-09-07 |
| CN105919806B true CN105919806B (en) | 2018-09-21 |
Family
ID=56841402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610364727.7A Active CN105919806B (en) | 2016-05-27 | 2016-05-27 | Dispensation injection needle with unidirectional filtering function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105919806B (en) |
Families Citing this family (1)
| 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 |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4743243A (en) * | 1984-01-03 | 1988-05-10 | Vaillancourt Vincent L | Needle with vent filter assembly |
| CN2572978Y (en) * | 2002-09-06 | 2003-09-17 | 赵明宣 | Single-steel needle dosing suction injection filter needle seat |
| CN2699913Y (en) * | 2004-04-09 | 2005-05-18 | 江苏苏云医疗器材有限公司 | Disposable liquor precised filter device for intravenous transfusion |
| CN201304107Y (en) * | 2008-12-16 | 2009-09-09 | 孙世军 | Bushing dispensing device |
| CN103006437A (en) * | 2012-12-03 | 2013-04-03 | 陈庆强 | Double-channel filtration dosing injection syringe |
| CN103721321A (en) * | 2014-01-26 | 2014-04-16 | 山东威高集团医用高分子制品股份有限公司 | Automatic filtration injector |
| CN104546459A (en) * | 2015-01-19 | 2015-04-29 | 宣城市江南医疗器械有限公司 | Needle type syringe with function of accurately filtering dissolved drug |
| CN206120739U (en) * | 2016-05-27 | 2017-04-26 | 浙江康德莱医疗器械股份有限公司 | Syringe needle dispenses with one -way filtering capability |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2344526B (en) * | 1999-01-12 | 2001-05-23 | Dumaresq Lucas Alison Jayne | Syringe with filter,and filter therefor |
-
2016
- 2016-05-27 CN CN201610364727.7A patent/CN105919806B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4743243A (en) * | 1984-01-03 | 1988-05-10 | Vaillancourt Vincent L | Needle with vent filter assembly |
| CN2572978Y (en) * | 2002-09-06 | 2003-09-17 | 赵明宣 | Single-steel needle dosing suction injection filter needle seat |
| CN2699913Y (en) * | 2004-04-09 | 2005-05-18 | 江苏苏云医疗器材有限公司 | Disposable liquor precised filter device for intravenous transfusion |
| CN201304107Y (en) * | 2008-12-16 | 2009-09-09 | 孙世军 | Bushing dispensing device |
| CN103006437A (en) * | 2012-12-03 | 2013-04-03 | 陈庆强 | Double-channel filtration dosing injection syringe |
| CN103721321A (en) * | 2014-01-26 | 2014-04-16 | 山东威高集团医用高分子制品股份有限公司 | Automatic filtration injector |
| CN104546459A (en) * | 2015-01-19 | 2015-04-29 | 宣城市江南医疗器械有限公司 | Needle type syringe with function of accurately filtering dissolved drug |
| CN206120739U (en) * | 2016-05-27 | 2017-04-26 | 浙江康德莱医疗器械股份有限公司 | Syringe needle dispenses with one -way filtering capability |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105919806A (en) | 2016-09-07 |
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