CN206482854U - Safety-type unidirectional filtering dispensation injection needle - Google Patents
Safety-type unidirectional filtering dispensation injection needle Download PDFInfo
- Publication number
- CN206482854U CN206482854U CN201620501063.XU CN201620501063U CN206482854U CN 206482854 U CN206482854 U CN 206482854U CN 201620501063 U CN201620501063 U CN 201620501063U CN 206482854 U CN206482854 U CN 206482854U
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- China
- Prior art keywords
- liquid
- batching pig
- filter
- needle
- liquid passage
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- Withdrawn - After Issue
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Abstract
The utility model is related to a kind of safety-type unidirectional filtering dispensation injection needle, including needle tubing, needle stand and filter, and needle tubing is fixed on the front end of needle stand, it is characterised in that：Filter is provided with the medicine liquid channel of the needle stand, mutually isolated drawing liquid passage is provided with the filter and liquid passage is pushed away, drawing liquid passage and push away the import and export of liquid passage and be connected with medicine liquid channel, the arrival end for pushing away liquid passage is provided with filter membrane, drawing liquid one-way valve mechanism is provided with the drawing liquid passage, it is described to push away in liquid passage provided with pushing away liquid one-way valve structures.Intrinsic safety holotype unidirectionally filters dispensation injection needle in drawing liquid and when pushing away liquid, and decoction by drawing liquid passage and pushes away liquid passage and flowed respectively, and the impurity being filtered out during liquid is pushed away is isolated in by filter membrane and pushes away liquid channel entrance end, it is ensured that drawing liquid and to push away liquid two-way all safe.
Description
Technical field
The utility model is related to a kind of safe medical needling instrument, particularly a kind of safety-type unidirectional filtering dispensation injection needle.
Background technology
At present, venous transfusion and injection are the most frequently used 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 in medicinal liquid bottle
Extract a small amount of decoction；Then extract syringe and insert in powdered medicine bottle, liquid medicine injection is entered in powdered medicine bottle；Treat that medicinal powder is complete with decoction
After fully dissolved, then extract 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
During liquid, some 3 one 5 microns particles are often produced in these conventional powder, the production of water medicament, storage and transportation,
Such as crystalline solid particulate, carbon black particle, further, since delineating bottleneck with grinding wheel, the glass fragment produced during bottleneck is cracked easy
Fall into medicine bottle；Solid medicinal powder, because the operating time is short, the deliquescent difference of solid medicinal powder, there is part when making up a prescription dissolving
Grain fails dissolving, meanwhile, when doser punctures rubber, easily make rubber stopper damaged, produce rubber scraps and enter into the liquid.This
Sample, when extracting decoction 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 chips or particle are directly entered in blood of human body, can be blocked with blood circulation
Blood vessel, harm, or even threat to life are brought to patient body.Therefore, need to filter medicine company during making up a prescription, to protect
Card safety.Existing dispensation injection needle common practice is one filter 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 chip etc. is blocked in filter（Such as filter membrane）Side, if reversely injected, be blocked in filter（As filtered
Film）The particulate matter of side, will be flowed 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, it is impossible to push away liquid while being adapted to be reversed.
The content of the invention
The purpose of this utility model is to be applied to drawing liquid simultaneously there is provided a kind of to overcome the deficiencies in the prior art
With the safety-type unidirectional filtering dispensation injection needle for pushing away liquid.
To achieve these goals, the utility model discloses the safety-type unidirectional filtering dispensation injection needle of one kind, including pin
Pipe, needle stand and filter, needle tubing are fixed on the front end of needle stand, it is characterised in that：It was provided with the medicine liquid channel of the needle stand
Device is filtered, provided with mutually isolated drawing liquid passage and liquid passage is pushed away in the filter, drawing liquid passage and entering for liquid passage is pushed away
Outlet is connected with medicine liquid channel, and the arrival end for pushing away liquid passage, which is provided with filter membrane, the drawing liquid passage, is provided with drawing liquid list
It is described to push away in liquid passage provided with pushing away liquid one-way valve structures to valve system；The filter includes batching pig, batching pig frame and mistake
Filter membrane, the batching pig is the front and rear cylindrical structural member being open, and inner chamber is separated into ante-chamber and back cavity by centre provided with lateral partitions,
The batching pig is made up of soft elastic material；The cylindrical structural member of opening, the isolation before and after the batching pig frame is similarly
The external diameter of the endoporus and batching pig of filling in frame matches, and the batching pig is arranged in batching pig frame, is additionally provided with the batching pig frame
The back cavity of the batching pig is separated into be additionally provided with left back chamber and right back cavity, the madial wall of the batching pig frame and taken out by longitudinal baffle
Liquid guiding gutter and push away liquid guiding gutter, the drawing liquid guiding gutter is axially disposed, from batching pig frame ante-chamber end face extend to it is described
The corresponding position of the left back chamber of batching pig, the drawing liquid guiding gutter and left back chamber constitute the drawing liquid passage；The liquid that pushes away is led
Chute is axially disposed, from the end face of batching pig frame back cavity and the right back cavity opposite position of the batching pig extend to it is described
The corresponding position of the ante-chamber of batching pig, it is described push away liquid guiding gutter and ante-chamber constitute it is described push away liquid passage, the batching pig outside
The madial wall of side wall and batching pig frame is liquid-tight to be affixed, and respectively with drawing liquid guiding gutter and pushing away liquid guiding gutter and being engaged described in composition and take out
Liquid one-way valve mechanism and liquid one-way valve structures are pushed away, the filter membrane is enclosed in the import of left back chamber.
Compared with prior art, the safety-type unidirectional filtering dispensation injection needle of the utility model is when drawing liquid is with liquid is pushed away, medicine
Liquid by drawing liquid passage and pushes away the flowing of liquid passage respectively, and the impurity being filtered out during liquid is pushed away is isolated in by filter membrane and pushed away
Liquid feeder connection end, it is ensured that drawing liquid and to push away liquid two-way all safe.
Below in conjunction with the accompanying drawings and specific embodiment the utility model is described in further detail.
Brief description of the drawings
Accompanying drawing 1 is the utility model specific embodiment stereoscopic structural representation；
Accompanying drawing 2 is the utility model filter specific embodiment front side structure schematic diagram；
Accompanying drawing 3 is the utility model filter specific embodiment rear structure schematic diagram；
Accompanying drawing 4 is one of the utility model filter specific embodiment exploded structural representation；
Accompanying drawing 5 is the two of the utility model filter specific embodiment exploded structural representation；
Accompanying drawing 6 is the utility model specific embodiment side structural representation；
Accompanying drawing 7 is the A-A structure sectional views of accompanying drawing 6；
Accompanying drawing 8 is the I portions partial enlarged drawing of accompanying drawing 7；
Accompanying drawing 9 is one of the utility model specific embodiment exploded structural representation；
Accompanying drawing 10 is the two of the utility model specific embodiment exploded structural representation.
Embodiment
As shown in Fig. 1,9,10, safety-type unidirectional filtering dispensation injection needle includes needle tubing 1, needle stand 2 and filter 3, pin
Pipe 1, which is fixed in the front end of needle stand 2, the medicine liquid channel of the needle stand 2, is provided with filter 3, and phase is provided with the filter 3
The drawing liquid passage mutually isolated and liquid passage is pushed away, drawing liquid passage and push away the import and export of liquid passage and be connected with medicine liquid channel, it is described to push away
The arrival end of liquid passage, which is provided with filter membrane 303, the drawing liquid passage, is provided with drawing liquid one-way valve mechanism, and described push away sets in liquid passage
Push away liquid one-way valve structures, drawing liquid one-way valve mechanism and push away liquid one-way valve structures any suitable position in the channel can be set
Put.
As shown in Figure 2-5, in this specific embodiment, the filter 3 includes batching pig 301, batching pig frame 302 and mistake
Filter membrane 303, the batching pig 301 is the cylindrical structural member of front and rear opening, and inner chamber is separated into by centre provided with lateral partitions 3011
Ante-chamber 3012 and back cavity 3013, the batching pig 301 are made up of soft elastic material, such as medical grade rubber or silica gel；The isolation
The cylindrical structural member of opening, is formed, the endoporus of the batching pig frame 302 is with isolating by plastic injection before and after plug frame 302 is similarly
The external diameter of plug 301 matches, and the batching pig 301 is arranged in batching pig frame 302, and longitudinal direction is additionally provided with 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 dividing plate 3021
Drawing liquid guiding gutter 3022 is additionally provided with 302 madial wall and liquid guiding gutter 3023 is pushed away, the drawing liquid guiding gutter 3022 is set vertically
Put, the position corresponding with the left back chamber 3013a of the batching pig 301, institute are extended to from the end face of 302 ante-chamber of batching pig frame 3012
State drawing liquid guiding gutter 3022 and left back chamber 3013a constitutes the drawing liquid passage, the liquid guiding gutter 3023 that pushes away is axially disposed, from
The end face of the back cavity 3013 of batching pig frame 302 and the right back cavity 3013b opposite positions of the batching pig 301 extend to it is described every
It is described to push away liquid guiding gutter 3023 and ante-chamber 3012 constitutes and described pushes away liquid passage, institute from the corresponding position of ante-chamber 3012 of plug 301
State the lateral wall of batching pig 301 and batching pig frame 302 madial wall it is liquid-tight be affixed, and respectively with drawing liquid guiding gutter 3022 and pushing away liquid
Guiding gutter 3023 is engaged the composition drawing liquid one-way valve mechanism and pushes away liquid one-way valve structures, and the filter membrane 303 is enclosed in a left side
In back cavity 3013b import.
As shown in Fig. 9,10, produce for convenience, the needle stand 2 is preferably made up 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 provided with cylinder open cavity volume, the rear needle stand
202 front end is again provided with cylinder open cavity volume, and the cavity volume opening of the front needle seat 201 and rear needle stand 202 is with respect to merging
Integral to constitute needle stand 2, the cavity volume of the front needle seat 201 and rear needle stand 202 merges the cavity volume of filter 3 for constituting cylinder,
The internal diameter of the cavity volume of filter 3 matches with the external diameter of batching pig frame 302, and the filter 3 is arranged on the cavity volume of filter 3
In, wherein, the outer wall of batching pig frame 302 with the madial wall of the cavity volume of filter 3 is liquid-tight is affixed, as shown in figs 6-8.
The operation principle that intrinsic safety holotype unidirectionally filters dispensation injection needle is as follows：When taking out decoction, decoction entered by needle tubing 1
The ante-chamber 3012 of batching pig 301 in the cavity volume of device 3 is filtered, due to the barrier of lateral partitions 3011, decoction can only be from drawing liquid guiding gutter
3022 flow into, and because the batching pig 301 is made up of soft elastic material, the pressure of decoction causes the left back chamber of batching pig 301
The concave side wall at 3013a positions, decoction is directly sucked in syringe into left back chamber, stops after drawing liquid action, decoction distress resolves,
The side wall at the left back chamber 3013a positions of batching pig 301 recovers and the madial wall of batching pig frame 302 is liquid-tight is affixed；When pushing away decoction, medicine
Liquid enters right back cavity 3013b by filtering membrane filtration at right back cavity 3013b import, and impurity is prevented from filter membrane side, decoction
It is flow to from liquid guiding gutter 3023 is pushed away in the position corresponding with the ante-chamber 3012 of the batching pig 301, the wall deformation of batching pig 301
Recessed, decoction enters after ante-chamber 3012, then released from needle tubing 1, completes injection.
Claims (2)
1. a kind of safety-type unidirectional filtering dispensation injection needle, including needle tubing, needle stand and filter, needle tubing are fixed on before needle stand
End, it is characterised in that：It is provided with filter, the filter and is taken out provided with mutually isolated in the medicine liquid channel of the needle stand
Liquid passage and push away liquid passage, drawing liquid passage and push away the import and export of liquid passage and be connected with medicine liquid channel, it is described to push away entering for liquid passage
Mouthful end, which is provided with filter membrane, the drawing liquid passage, is provided with drawing liquid one-way valve mechanism, described to push away in liquid passage provided with pushing away liquid check valve
Structure；The filter includes batching pig, batching pig frame and filter membrane, and the batching pig is the front and rear cylindric structure being open
Inner chamber is separated into ante-chamber and back cavity by part, centre provided with lateral partitions, and the batching pig is made up of soft elastic material；It is described every
The external diameter of the cylindrical structural member of opening before and after being similarly from plug frame, the endoporus of the batching pig frame and batching pig matches, it is described every
Be arranged on from plug in batching pig frame, be additionally provided with the batching pig frame longitudinal baffle back cavity of the batching pig is separated into it is left back
Drawing liquid guiding gutter is additionally provided with chamber and right back cavity, the madial wall of the batching pig frame and liquid guiding gutter, the drawing liquid guiding gutter is pushed away
It is axially disposed, extend to the position corresponding with the left back chamber of the batching pig, the drawing liquid from batching pig frame ante-chamber end face
Guiding gutter and left back chamber constitute the drawing liquid passage；The liquid guiding gutter that pushes away 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 the position corresponding with the ante-chamber of the batching pig, and the liquid that pushes away is led
Chute and ante-chamber constitute it is described push away liquid passage, the lateral wall of the batching pig with the madial wall of batching pig frame is liquid-tight is affixed, and divide
Not with drawing liquid guiding gutter and pushing away liquid guiding gutter and being engaged the composition drawing liquid one-way valve mechanism and push away liquid one-way valve structures, the mistake
Filter membrane is enclosed in the import of left back chamber.
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
With rear needle stand composition, the needle tubing is fixed on the front end of front needle seat, and the rear end of the front needle seat is provided with cylinder open cavity volume, institute
The front end for stating rear needle stand is again provided with cylinder open cavity volume, and the relative merging of the cavity volume opening of the front needle seat and rear needle stand is formed
Needle stand is integrally formed, the cavity volume merging of the front needle seat and rear needle stand constitutes filter cavity volume, and the filter is arranged on
In filter cavity volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620501063.XU CN206482854U (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 |
|---|---|---|---|
| CN201620501063.XU CN206482854U (en) | 2016-05-27 | 2016-05-27 | Safety-type unidirectional filtering dispensation injection needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206482854U true CN206482854U (en) | 2017-09-12 |
Family
ID=59768550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620501063.XU Withdrawn - After Issue CN206482854U (en) | 2016-05-27 | 2016-05-27 | Safety-type unidirectional filtering dispensation injection needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206482854U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105943384A (en) * | 2016-05-27 | 2016-09-21 | 浙江康德莱医疗器械股份有限公司 | A safe type unidirectional filter medicine preparation injection needle |
-
2016
- 2016-05-27 CN CN201620501063.XU patent/CN206482854U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105943384A (en) * | 2016-05-27 | 2016-09-21 | 浙江康德莱医疗器械股份有限公司 | A safe type unidirectional filter medicine preparation injection needle |
| CN105943384B (en) * | 2016-05-27 | 2019-01-11 | 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170912 Effective date of abandoning: 20190111 |
|
| AV01 | Patent right actively abandoned |