CN105919808B - Dispensation injection needle with unidirectional filtration - Google Patents
Dispensation injection needle with unidirectional filtration Download PDFInfo
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- CN105919808B CN105919808B CN201610368811.6A CN201610368811A CN105919808B CN 105919808 B CN105919808 B CN 105919808B CN 201610368811 A CN201610368811 A CN 201610368811A CN 105919808 B CN105919808 B CN 105919808B
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- liquid channel
- partition board
- needle
- propulsive
- drawing liquid
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- 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
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Pharmacology & Pharmacy (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Hematology (AREA)
- Heart & Thoracic Surgery (AREA)
- Biomedical Technology (AREA)
- Anesthesiology (AREA)
- Engineering & Computer Science (AREA)
- Vascular Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The present invention relates to a kind of dispensation injection needles with unidirectional filtration, including needle tubing, needle stand and filter device, needle tubing to be fixed on the front end of needle stand, it is characterised in that：It is equipped with filter device in the medicine liquid channel of the needle stand, is equipped with mutually isolated drawing liquid channel and propulsive liquid channel in the filter device, the inlet and outlet in drawing liquid channel and propulsive liquid channel connects with medicine liquid channel, equipped with propulsive liquid one-way valve structures in the propulsive liquid channel；Drawing liquid one-way valve structures are equipped in the drawing liquid channel, the outlet end in the drawing liquid channel is equipped with filter membrane.This has the dispensation injection needle of unidirectional filtration in drawing liquid and propulsive liquid, and liquid is flowed by drawing liquid channel and propulsive liquid channel respectively, and the impurity being filtered out during drawing liquid is isolated in by filter membrane in drawing liquid channel, ensure that drawing liquid and propulsive liquid are two-way all safe.
Description
Technical field
The present invention relates to a kind of safe medical needling instrument, especially a kind of dispensation injection needle with unidirectional filtration.
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 dispensation injection needle with unidirectional filtration of liquid.
To achieve the goals above, the invention discloses a kind of dispensation injection needles with unidirectional filtration, 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 propulsive liquid one-way valve structures are equipped in the propulsive liquid channel；Drawing liquid is equipped in the drawing liquid channel
The outlet end of one-way valve structures, the drawing liquid channel is equipped with filter membrane.
Compared with prior art, the present invention has the dispensation injection needle of unidirectional filtration in drawing liquid and propulsive liquid, medicine
Liquid is flowed by drawing liquid channel and propulsive liquid channel respectively, and the impurity being filtered out during drawing liquid is isolated in pumping by filter membrane
In liquid channel, it ensure that drawing liquid and propulsive liquid are two-way all safe.
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；
Attached drawing 9 is filter device specific embodiment antero-lateral perspective structural representation of the present invention；
Attached drawing 10 is filter device specific embodiment rear perspective structural representation of the present invention；
Attached drawing 11 is filter device specific embodiment front view of the present invention；
Attached drawing 12 is 11 B-B structure sectional views of attached drawing.
Specific implementation mode
As shown in figures 1 to 6, the dispensation injection needle with unidirectional filtration 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
Propulsive liquid one-way valve structures are equipped in liquid channel；Drawing liquid one-way valve structures are equipped in the drawing liquid channel, the drawing liquid channel goes out
Mouth end is equipped with filter membrane.
In this specific embodiment, as shown in Fig. 7,8 and Figure 11,12, the filter device 3 includes batching pig 301, batching pig
Frame 302 and filter membrane 303, the batching pig 301 are the cylindrical structural member of front and back opening, and centre is equipped with axial partition board 3011 will be interior
Chamber is separated into left chamber and right chamber, and the left chamber is equipped with an oblique partition board 3012 in a left side being obliquely installed, the oblique partition board in the left side 3012
One end be connected with one end of axial partition board 3011 towards needle tubing 1, the other end of the oblique partition board in a left side 3012 is to left chamber sidewall slope
The other end of batching pig 301 is connected and extends to, between the oblique partition board 3012 in the left side, left chamber side wall and axial partition board 3011
Space constitutes the propulsive liquid channel, and the junction of the oblique partition board 3012 in a left side and axial partition board 3011 is equipped with penetration outer end and pushes away
The joint-cutting 3014 in liquid channel constitutes the propulsive liquid check valve；The right chamber is equipped with an oblique partition board 3013 in the right side being obliquely installed, institute
The one end for stating right oblique partition board 3013 is connected with axial partition board 3011 backwards to one end of needle tubing 1, the oblique partition board in the right side 3013 it is another
Hold the other end that batching pig 301 is connected and extended to right chamber sidewall slope, the oblique partition board 3013 in the right side, right chamber side wall and axis
The drawing liquid channel, the junction of the right side oblique partition board 3013 and axial partition board 3011 are constituted to the space between partition board 3011
Joint-cutting 3014 equipped with penetration outer end and drawing liquid channel constitutes the drawing liquid check valve, and the batching pig 301 is whole by soft bullet
Property material is made.
As shown in Figures 9 and 10, the batching pig frame 302 is similarly the front and back cylindrical structural member being open, the batching pig frame
302 endoporus matches with the outer diameter of batching pig 301, and the axial direction that 302 axial length of batching pig frame is more than batching pig 301 is long
Degree, the batching pig 301 are arranged in batching pig frame 302, and the lateral wall of the batching pig 301 and batching pig frame 302 is interior
Side wall is liquid-tight to be affixed setting, and close rear end is additionally provided with longitudinal baffle and 3011 liquid-tight company of axial partition board in the batching pig frame 302
It connects and the back cavity of the batching pig frame 302 is separated into propulsive liquid back cavity 3023 and drawing liquid back cavity 3022.3023 He of propulsive liquid back cavity
For drawing liquid back cavity 3022 respectively with propulsive liquid channel and drawing liquid channel unicom, the filter membrane 303 is enclosed in going out for drawing liquid back cavity 3022
On mouth.
As shown in figure 12, in order to reliably be isolated and unicom, axial partition board 3011 among the batching pig 301
Middle part is bent to form a platform 3015, the platform 3015 of the axial direction partition board 3011 preferably through opposite 90 ° in direction twice
On upper and 301 two side corresponding position of batching pig equipped with the groove 3016 to match with longitudinal baffle 3021, the longitudinal baffle
3021 front end fluid-tight engagements are plugged in groove 3016.
As shown in Figure 5,6, it produces for convenience, the needle stand 2 is preferably made of front needle seat 201 and rear needle stand 202, described
Needle tubing 1 is fixed on the front end of front needle seat 201, and the rear end of the front needle seat 201 is equipped with cylinder open vessel, the rear needle stand
202 front end is again provided with cylinder open vessel, the vessel of the front needle seat 201 and rear needle stand 202 be open with respect to merging and
Integral to constitute needle stand 2, the vessel merging of the front needle seat 201 and rear needle stand 202 constitutes cylindrical 3 vessel of filter device,
The internal diameter of 3 vessel of filter device matches with the outer diameter of batching pig frame 302, and the filter device 3 is arranged in 3 vessel of filter device
In, wherein the madial wall of the outer wall of batching pig frame 302 and 3 vessel of filter device is liquid-tight to be affixed.
This has the operation principle of the dispensation injection needle of unidirectional filtration as follows：Due to propulsive liquid channel and drawing liquid channel at
The small wedge shape setting in arrival end large outlet end, batching pig 301 is made of soft elastic material, and when taking out liquid, liquid passes through needle tubing 1
Into in the batching pig 301 in 3 vessel of filter device, the pressure of liquid is from the outer side of left oblique partition board 3012 to propulsive liquid channel
Pressure, makes propulsive liquid closed check valve, and the pressure of liquid is from the outside side pressure in drawing liquid channel of right oblique partition board 3013, drawing liquid check valve
It opens, after liquid can only flow into from drawing liquid channel and enter drawing liquid back cavity 3022, in the outlet using drawing liquid back cavity 3022
Filter membrane 303 filters, and liquid is inhaled into syringe, and impurity is hindered in drawing liquid back cavity 3022；When pushing away liquid, same principle is taken out
Liquid closed check valve, propulsive liquid check valve are opened, and liquid passes through propulsive liquid back cavity 3023 and propulsive liquid channel, using the propulsive liquid list of front end
To valve, is released from needle tubing 1 and complete injection.
Claims (2)
1. a kind of dispensation injection needle with unidirectional filtration, 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
In be equipped with propulsive liquid one-way valve structures；Drawing liquid one-way valve structures are equipped in the drawing liquid channel, the outlet end in the drawing liquid channel is set
There is filter membrane；The filter device includes batching pig, batching pig frame and filter membrane, and the batching pig is the cylindrical shape of front and back opening
Component, centre are equipped with axial partition board and inner cavity are separated into left chamber and right chamber, the left chamber be equipped with a left side that one is obliquely installed it is oblique every
Plate, one end of the oblique partition board in a left side are connected with one end of axial partition board towards needle tubing, and the other end of the oblique partition board in a left side is to left chamber
Sidewall slope connects and extends to the other end of batching pig, the sky between the oblique partition board in the left side, left chamber side wall and axial partition board
Between constitute the propulsive liquid channel, the junction of the oblique partition board in a left side and axial partition board is equipped with cutting for penetration outer end and propulsive liquid channel
Seam constitutes the propulsive liquid check valve；The right chamber is equipped with an oblique partition board in the right side being obliquely installed, one end of the oblique partition board in the right side
It is connected backwards to one end of needle tubing with axial partition board, the other end of right oblique partition board connects to right chamber sidewall slope and extends to isolation
The other end of plug, the space between the oblique partition board in the right side, right chamber side wall and axial partition board constitute the drawing liquid channel, the right side
The junction of oblique partition board and axial partition board is equipped with penetration outer end and the joint-cutting in drawing liquid channel constitutes the drawing liquid check valve；It is described
Batching pig is integrally made of soft elastic material；The batching pig frame is similarly the front and back cylindrical structural member being open, the isolation
The outer diameter of the endoporus and batching pig of filling in frame matches, and the batching pig is arranged in batching pig frame, and the lateral wall of the batching pig
With the madial wall of batching pig frame is liquid-tight is affixed setting, be additionally provided with longitudinal baffle and axial partition board close to rear end in the batching pig frame
The back cavity of the batching pig frame is separated into propulsive liquid back cavity and drawing liquid back cavity, the propulsive liquid back cavity and drawing liquid back cavity point by liquid-tight connection
Not with propulsive liquid channel and drawing liquid channel unicom, the filter membrane is enclosed in the outlet of drawing liquid back cavity.
2. the dispensation injection needle according to claim 1 with unidirectional filtration, it is characterised in that：The needle stand is by preceding
Needle stand and rear needle stand composition, the needle tubing are fixed on the front end of front needle seat, and the rear end of the front needle seat holds equipped with cylinder open
Chamber, it is described after the front end of needle stand be again provided with cylinder open vessel, the vessel opening of the front needle seat and rear needle stand is involutory
And into needle stand is integrally formed, the vessel merging of the front needle seat and rear needle stand constitutes filter device vessel, the filter device
It is arranged in filter device vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610368811.6A CN105919808B (en) | 2016-05-27 | 2016-05-27 | Dispensation injection needle with unidirectional filtration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610368811.6A CN105919808B (en) | 2016-05-27 | 2016-05-27 | Dispensation injection needle with unidirectional filtration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105919808A CN105919808A (en) | 2016-09-07 |
| CN105919808B true CN105919808B (en) | 2018-08-24 |
Family
ID=56842465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610368811.6A Active CN105919808B (en) | 2016-05-27 | 2016-05-27 | Dispensation injection needle with unidirectional filtration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105919808B (en) |
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 |
| CN206138405U (en) * | 2016-05-27 | 2017-05-03 | 浙江康德莱医疗器械股份有限公司 | Syringe needle dispenses with one -way filtration |
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 CN201610368811.6A patent/CN105919808B/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 |
| CN206138405U (en) * | 2016-05-27 | 2017-05-03 | 浙江康德莱医疗器械股份有限公司 | Syringe needle dispenses with one -way filtration |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105919808A (en) | 2016-09-07 |
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