CN105943384B - Safety-type unidirectional filtering dispensation injection needle - Google Patents
Safety-type unidirectional filtering dispensation injection needle Download PDFInfo
- Publication number
- CN105943384B CN105943384B CN201610368233.6A CN201610368233A CN105943384B CN 105943384 B CN105943384 B CN 105943384B CN 201610368233 A CN201610368233 A CN 201610368233A CN 105943384 B CN105943384 B CN 105943384B
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- China
- Prior art keywords
- liquid channel
- batching pig
- propulsive
- liquid
- needle
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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
-
- 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
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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 present invention relates to a kind of safety-type unidirectional filtering dispensation injection needles, including needle tubing, needle stand and filter device, needle tubing is fixed on the front end of needle stand, it is characterized by: being equipped with filter device 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 arrival end in the propulsive liquid channel is equipped with filter membrane, it is equipped with drawing liquid one-way valve mechanism in the drawing liquid channel, is equipped with propulsive liquid one-way valve structures in the propulsive liquid channel.Intrinsic safety holotype unidirectionally filters dispensation injection needle in drawing liquid and propulsive liquid, and medical fluid passes through drawing liquid channel and the flowing of propulsive liquid channel respectively, and the impurity being filtered out during propulsive liquid is isolated in propulsive liquid channel entrance end by filter membrane, 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 safety-type unidirectional filtering dispensation injection needle.
Background technique
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 are as follows: will syringe be inserted into medicinal liquid bottle in extract a small amount of medical fluid；Then note is extracted
Emitter is simultaneously inserted into powdered medicine bottle, and liquid medicine injection is entered in powdered medicine bottle；It is completely dissolved to medicinal powder and medical fluid
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 of particles are often generated in these common powder, the production of water medicament, storage and transportational process,
Such as crystalline solid particle, carbon black particle, further, since delineating bottleneck with grinding wheel, the glass fragment generated when cracking bottleneck is easy
It falls into medicine bottle；Solid medicinal powder make up a prescription dissolve when, since the operating time is short, the deliquescent difference of solid medicinal powder, have 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 medical fluid using Medicine adder for injection, glass fragment, part medicinal powder particle or rubber scraps are also drawn into.It is giving
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 that a filter device (such as filter membrane) is arranged in liquid-transport pipe-line 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 the side of filter device (such as filter membrane), if when reversed injection, being blocked in filter device (as filtered
Film) side particulate matter, will flow back, bring harm to patient body；Other are additionally arranged check valve also 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.
Summary of the invention
It is an object of the invention to provide for overcome the deficiencies in the prior art and a kind of be suitable for drawing liquid simultaneously and push away
The safety-type unidirectional filtering dispensation injection needle of liquid.
To achieve the goals above, the invention discloses a kind of safety-type unidirectional filtering dispensation injection needles, including needle tubing, needle
Seat and filter device, needle tubing are fixed on the front end of needle stand, it is characterised in that: filtering dress is equipped in the medicine liquid channel of the needle stand
It sets, mutually isolated drawing liquid channel and propulsive liquid channel, the inlet and outlet in drawing liquid channel and propulsive liquid channel is equipped in the filter device
It is connect with medicine liquid channel, the arrival end in the propulsive liquid channel is equipped with filter membrane, is equipped with drawing liquid check valve in the drawing liquid channel
Mechanism is equipped with propulsive liquid one-way valve structures in the propulsive liquid channel.
Compared with prior art, the safety-type unidirectional filtering dispensation injection needle of the present invention is in drawing liquid and propulsive liquid, medical fluid point
Not Tong Guo drawing liquid channel and the flowing of propulsive liquid channel, and the impurity being filtered out during propulsive liquid is isolated in propulsive liquid by filter membrane and leads to
Road arrival end ensure that drawing liquid and propulsive liquid are two-way all safe.
With reference to the accompanying drawing and specific embodiment the invention will be further described.
Detailed description of the invention
Attached drawing 1 is specific embodiment of the invention stereoscopic structural schematic diagram；
Attached drawing 2 is filter device specific embodiment front side structure schematic diagram of the present invention；
Attached drawing 3 is filter device specific embodiment rear structure schematic diagram of the present invention；
Attached drawing 4 is one of filter device specific embodiment exploded structural schematic diagram of the present invention；
Attached drawing 5 is filter device specific embodiment exploded second structural representation of the present invention；
Attached drawing 6 is specific embodiment of the invention end side structural schematic diagram；
Attached drawing 7 is 6 A-A structure sectional view of attached drawing；
Attached drawing 8 is 7 portion I partial enlarged view of attached drawing；
Attached drawing 9 is one of specific embodiment of the invention exploded structural schematic diagram；
Attached drawing 10 is specific embodiment of the invention exploded second structural representation.
Specific embodiment
As shown in Fig. 1,9,10, safety-type unidirectional filtering dispensation injection needle 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, is equipped with phase 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 arrival end in liquid channel is equipped with filter membrane 303, and drawing liquid one-way valve mechanism is equipped in the drawing liquid channel, is set in the propulsive liquid channel
There are propulsive liquid one-way valve structures, any suitable position in the channel can be set in drawing liquid one-way valve mechanism and propulsive liquid one-way valve structures
It sets.
As shown in Figure 2-5, 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 are the cylindrical structural member of front and back opening, and centre is equipped with lateral partitions 3011 and is separated into inner cavity
Ante-chamber 3012 and back cavity 3013, the batching pig 301 is made of soft elastic material, such as medical grade rubber or silica gel；The isolation
Plug frame 302 be similarly front and back be open cylindrical structural member, formed by plastic injection, the inner hole of the batching pig frame 302 be isolated
The outer diameter of plug 301 matches, and the batching pig 301 is arranged in batching pig frame 302, is additionally provided with longitudinal direction in the batching pig frame 302
The back cavity 3013 of the batching pig 301 is separated into left back chamber 3013a and right back cavity 3013b, the batching pig frame by partition 3021
Drawing liquid diversion trench 3022 and propulsive liquid diversion trench 3023 are additionally provided on 302 inner sidewall, the drawing liquid diversion trench 3022 is set along axial direction
It sets, extends to position corresponding with the left back chamber 3013a of the batching pig 301, institute from 302 ante-chamber of batching pig frame, 3012 end face
It states drawing liquid diversion trench 3022 and left back chamber 3013a constitutes the drawing liquid channel, the propulsive liquid diversion trench 3023 is axially disposed, from
The end face of 302 back cavity 3013 of batching pig frame and the right back cavity 3013b opposite position of the batching pig 301 extend to it is described every
The corresponding position of ante-chamber 3012 from plug 301, the propulsive liquid diversion trench 3023 and ante-chamber 3012 constitute the propulsive liquid channel, institute
The inner sidewall liquid of the lateral wall for stating batching pig 301 and batching pig frame 302 is close to be affixed, and respectively with drawing liquid diversion trench 3022 and propulsive liquid
Diversion trench 3023 matches the composition drawing liquid one-way valve mechanism and propulsive liquid one-way valve structures, the filter membrane 303 are enclosed in the right side
In the import of back cavity 3013b.
As shown in Figures 9 and 10, it produces for convenience, the needle stand 2 is preferably made of front needle seat 201 and rear needle stand 202, institute
The front end that needle tubing 1 is fixed on front needle seat 201 is stated, the rear end of the front needle seat 201 is equipped with cylinder open cavity, the rear needle stand
202 front end is again provided with cylinder open cavity, the cavity 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 cavity merging of the front needle seat 201 and rear needle stand 202 constitutes cylindrical 3 cavity of filter device,
The internal diameter of 3 cavity of filter device and the outer diameter of batching pig frame 302 match, and the filter device 3 is arranged in 3 cavity of filter device
In, wherein the inner sidewall liquid of the outer wall of batching pig frame 302 and 3 cavity of filter device is close to be affixed, as shown in figs 6-8.
The working principle that intrinsic safety holotype unidirectionally filters dispensation injection needle is as follows: when taking out medical fluid, medical fluid entered by needle tubing 1
The ante-chamber 3012 of batching pig 301 in 3 cavity of device is filtered, due to the barrier of lateral partitions 3011, medical fluid can only be from drawing liquid diversion trench
3022 flow into, and since the batching pig 301 is made of soft elastic material, the pressure of medical fluid makes the left back chamber of batching pig 301
The concave side wall at the position 3013a, medical fluid enter left back chamber and are directly sucked in syringe, and after stopping drawing liquid movement, medical fluid pressure disappears,
The side wall at the position left back chamber 3013a of batching pig 301 restores and the inner sidewall liquid of batching pig frame 302 is close is affixed；When pushing away medical fluid, medicine
Liquid enters right back cavity 3013b by the entrance filter membrane filtering of right back cavity 3013b, and impurity is prevented from filter membrane side, medical fluid
Position corresponding with the ante-chamber 3012 of the batching pig 301 is flow to from propulsive liquid diversion trench 3023, in 301 wall deformation of batching pig
It is recessed, after medical fluid enters ante-chamber 3012, then from the release of needle tubing 1, complete injection.
Claims (2)
1. a kind of safety-type unidirectional filtering dispensation injection needle, including needle tubing, needle stand and filter device, before needle tubing is fixed on needle stand
End, it is characterised in that: be equipped with filter device in the medicine liquid channel of the needle stand, be equipped with mutually isolated pumping in the filter device
The inlet and outlet in liquid channel and propulsive liquid channel, drawing liquid channel and propulsive liquid channel are connect with medicine liquid channel, and the propulsive liquid channel enters
Mouth end is equipped with filter membrane, and drawing liquid one-way valve mechanism is equipped in the drawing liquid channel, is equipped with propulsive liquid check valve in the propulsive liquid channel
Structure；The filter device includes batching pig, batching pig frame and filter membrane, and the batching pig is the cylindric structure of front and back opening
Part, centre are equipped with lateral partitions and inner cavity are separated into ante-chamber and back cavity, and the batching pig is made of soft elastic material；It is described every
Be similarly the cylindrical structural member that front and back is open from plug frame, the outer diameter of the inner hole of the batching pig frame and batching pig matches, it is described every
From plug be arranged in batching pig frame, be additionally provided in the batching pig frame longitudinal baffle back cavity of the batching pig is separated into it is left back
Chamber and right back cavity are additionally provided with drawing liquid diversion trench and propulsive liquid diversion trench, the drawing liquid diversion trench on the inner sidewall of the batching pig frame
It is axially disposed, position corresponding with the left back chamber of the batching pig, the drawing liquid are extended to from batching pig frame ante-chamber end face
Diversion trench and left back chamber constitute the drawing liquid channel；The propulsive liquid diversion trench is axially disposed, from batching pig frame back cavity with it is described
The end face of the right back cavity opposite position of batching pig extends to position corresponding with the ante-chamber of the batching pig, and the propulsive liquid is led
Chute and ante-chamber constitute the propulsive liquid channel, the lateral wall of the batching pig with the inner sidewall liquid of batching pig frame is close is affixed, and divide
It is not matched with drawing liquid diversion trench and propulsive liquid diversion trench and constitutes the drawing liquid one-way valve mechanism and propulsive liquid one-way valve structures, the mistake
Filter membrane is enclosed in the import of right back cavity.
2. safety-type unidirectional filtering dispensation injection needle according to claim 1, it is characterised in that: the needle stand is by front needle seat
It is formed with 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 equipped with cylinder open cavity, institute
The front end for stating rear needle stand is again provided with cylinder open cavity, and the cavity opening of the front needle seat and rear needle stand is opposite to be merged
It is integrally formed needle stand, the cavity merging of the front needle seat and rear needle stand constitutes filter device cavity, and the filter device setting exists
In filter device cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610368233.6A CN105943384B (en) | 2016-05-27 | 2016-05-27 | Safety-type unidirectional filtering dispensation injection needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610368233.6A CN105943384B (en) | 2016-05-27 | 2016-05-27 | Safety-type unidirectional filtering dispensation injection needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105943384A CN105943384A (en) | 2016-09-21 |
| CN105943384B true CN105943384B (en) | 2019-01-11 |
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ID=56910933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610368233.6A Active CN105943384B (en) | 2016-05-27 | 2016-05-27 | Safety-type unidirectional filtering dispensation injection needle |
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| Country | Link |
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| CN (1) | CN105943384B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106890381A (en) * | 2017-04-13 | 2017-06-27 | 王辉 | A kind of filtration syringe tool and its technical scheme |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2572978Y (en) * | 2002-09-06 | 2003-09-17 | 赵明宣 | Single-steel needle dosing suction injection filter needle seat |
| CN201814859U (en) * | 2010-10-26 | 2011-05-04 | 赵西艳 | Novel medicine dispensing device |
| CN103565642A (en) * | 2013-09-10 | 2014-02-12 | 吴彩芳 | Large liquid dispensing needle |
| CN204446606U (en) * | 2015-01-19 | 2015-07-08 | 宣城市江南医疗器械有限公司 | The molten syringe of a kind of pin type secondary filter |
| CN206482854U (en) * | 2016-05-27 | 2017-09-12 | 浙江康德莱医疗器械股份有限公司 | Safety-type unidirectional filtering dispensation injection needle |
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 CN201610368233.6A patent/CN105943384B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2572978Y (en) * | 2002-09-06 | 2003-09-17 | 赵明宣 | Single-steel needle dosing suction injection filter needle seat |
| CN201814859U (en) * | 2010-10-26 | 2011-05-04 | 赵西艳 | Novel medicine dispensing device |
| CN103565642A (en) * | 2013-09-10 | 2014-02-12 | 吴彩芳 | Large liquid dispensing needle |
| CN204446606U (en) * | 2015-01-19 | 2015-07-08 | 宣城市江南医疗器械有限公司 | The molten syringe of a kind of pin type secondary filter |
| CN206482854U (en) * | 2016-05-27 | 2017-09-12 | 浙江康德莱医疗器械股份有限公司 | Safety-type unidirectional filtering dispensation injection needle |
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| Publication number | Publication date |
|---|---|
| CN105943384A (en) | 2016-09-21 |
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