CN206120739U - Syringe needle dispenses with one -way filtering capability - Google Patents
Syringe needle dispenses with one -way filtering capability Download PDFInfo
- Publication number
- CN206120739U CN206120739U CN201620504518.3U CN201620504518U CN206120739U CN 206120739 U CN206120739 U CN 206120739U CN 201620504518 U CN201620504518 U CN 201620504518U CN 206120739 U CN206120739 U CN 206120739U
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- CN
- China
- Prior art keywords
- liquid
- needle
- base plate
- batching pig
- filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model relates to a syringe needle dispenses with one -way filtering capability, including needle tubing, needle file and filter equipment, the front end at the needle file is fixed to the needle tubing, be equipped with filter equipment among the medical liquid passage of needle file, being equipped with the drawing liquid passageway of mutual isolation among the filter equipment and pushing away the liquid passageway, the drawing liquid passageway all is connected with medical liquid passage with the exit that push away the liquid passageway, the entrance point that pushes away the liquid passageway is equipped with filtration membrane, the entrance point of drawing liquid passageway is equipped with check valve mechanism, it is equipped with the check valve structure in the liquid passageway to push away. This syringe needle dispenses with one -way filtering capability the drawing liquid when pushing away liquid, the liquid medicine respectively through the drawing liquid passageway with push away liquid channel flow, and kept apart in the syringe safety having guaranteed the drawing liquid and pushed away liquid pushing away liquid in -process impurity by filtration membrane.
Description
Technical field
The utility model is related to a kind of safe medical needling instrument, particularly a kind of dispensation injection needle with unidirectional filtering function.
Background technology
At present, venous transfusion and injection are treatment means the most frequently used in medical treatment.Before being infused, it is often necessary to will
Some pulvis are formulated together with liquid of glucose or liquor.Specifically method of operating is：Syringe is inserted in medicinal liquid bottle
Extract a small amount of liquid；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 liquid
After CL, then extract out in mixed liquor injection infusion bottle or direct suction 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 in medicine bottle；Solid medicinal powder, because the operating time is short, the deliquescent difference of solid medicinal powder, there is part when dissolving is made up a prescription
Grain fails dissolving, meanwhile, when doser punctures rubber, easily make rubber stopper damaged, produce rubber scraps and enter into the liquid.This
Sample, when liquid is extracted using Medicine adder for injection, glass fragment, part medicinal powder particle or rubber scraps are also drawn into.Giving
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, to patient body harm, or even threat to life are brought.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 flow back, and to patient body harm is brought；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 while be adapted to be reversed pushing away liquid.
The content of the invention
The purpose of this utility model is to provide a kind of simultaneously suitable for drawing liquid to overcome the deficiencies in the prior art
With the dispensation injection needle with unidirectional filtering function for pushing away liquid.
To achieve these goals, the utility model discloses a kind of dispensation injection needle with unidirectional filtering function, bag
Needle tubing, needle stand and filter are included, needle tubing is fixed on the front end of needle stand, it is characterised in that：Set in the medicine liquid channel of the needle stand
There is filter, mutually isolated drawing liquid passage is provided with the filter and liquid passage is pushed away, drawing liquid passage and push away liquid passage
Import and export be connected with medicine liquid channel, the entrance point for pushing away liquid passage is provided with filter membrane, the entrance point of the drawing liquid passage
Check valve mechanism is provided with, described pushing away in liquid passage is provided with one-way valve structures.
Compared with prior art, the utility model has the dispensation injection needle of unidirectional filtering function in drawing liquid and pushes away liquid
When, liquid by drawing liquid passage and pushes away the flowing of liquid passage respectively, and impurity is isolated in syringe by filter membrane during liquid is pushed away
In, it is ensured that drawing liquid and the safety for pushing away liquid.
Below in conjunction with the accompanying drawings and specific embodiment the utility model is described in further detail.
Description of the drawings
Accompanying drawing 1 is the utility model specific embodiment stereoscopic structural representation；
Accompanying drawing 2 is the utility model specific embodiment front view；
Accompanying drawing 3 is the A-A structure sectional views of accompanying drawing 2；
Accompanying drawing 4 is the I portions partial enlarged drawing of accompanying drawing 3；
Accompanying drawing 5 is one of the utility model specific embodiment exploded structural representation；
Accompanying drawing 6 is the two of the utility model specific embodiment exploded structural representation；
Accompanying drawing 7 is one of the utility model filter specific embodiment exploded structural representation；
Accompanying drawing 8 is the two of the utility model filter specific embodiment exploded structural representation.
Specific embodiment
As Figure 1-4, the dispensation injection needle with unidirectional filtering function includes needle tubing 1, needle stand 2 and filter 3, pin
Pipe 1 is fixed on the front end of needle stand 2, and filter 3 is provided with the medicine liquid channel of the needle stand 2, and in the filter 3 phase is provided with
Mutually the drawing liquid passage of isolation 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 entrance point of liquid passage is provided with filter membrane, and the entrance point of the drawing liquid passage is provided with check valve mechanism, and described pushing away sets in liquid passage
There are one-way valve structures.
As shown in Figure 7,8, in this specific embodiment, the filter 3 includes batching pig 301, batching pig frame 302 and mistake
Filter membrane 303, the batching pig 301 includes a base plate, and base plate one side center is provided with vertical partition plate 3011, the vertical partition plate
Base plate is divided into left and right two parts by 3011, respectively drawing liquid base plate 3012 and pushes away liquid base plate 3013, and the liquid base plate 3013 that pushes away sets
There is opening, the upper end of the vertical partition plate 3011 pushes away the side of liquid base plate 3013 and is provided with the transverse slat 3014 for protruding 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 cylinder being open in front and back
Shape component, shape of cross section and size and the base plate of the batching pig frame 302 match.The base plate is preferably circular, it is described every
It is the cylindrical structural member being open in front and back from plug frame 302, the axial length of batching pig frame 302 is more than the height of vertical partition plate 3011
Degree so that inside arranges longitudinal baffle 3021 containing space.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）Stretch into and be arranged in batching pig frame 302, and the base plate of the batching pig 301 and batching pig frame
302 annular end faces are liquid-tight to be affixed, and the two ends end face of batching pig frame 302 and inwall want flat smooth, is conducive to improving sealing, vertically
Two sides of dividing plate 3011 are liquid-tight with the madial wall of batching pig frame 302 to be affixed（The mode of slightly interference fit can be taken）, it is described
The inner chamber other end of batching pig frame 302（It is preferred that being integrated）Be provided with longitudinal baffle 3021, the position of the longitudinal baffle 3021 with it is vertical
Dividing plate 3011 is relative, and the longitudinal baffle 3021 and the position of vertical partition plate 3011 are preferably in center, the longitudinal baffle 3021
Top offset with the top of vertical partition plate 3011, the other end of longitudinal baffle 3021 is flushed with the end of batching pig frame 302, described vertical
The inner chamber of batching pig frame 302 is separated into into equal two parts to dividing plate 3021 and vertical partition plate 3011 are common, with drawing liquid bottom
The corresponding side of plate 3012 constitutes the drawing liquid passage, push away liquid passage described in the composition of the corresponding side of liquid base plate 3013 with pushing away.Institute
State push away in batching pig frame 302 position that liquid vias inner walls flush with transverse slat 3014 be provided with two ends extend to longitudinal baffle 3021,
Raised back-up ring 3022, the transverse slat 3014 is attached on the end face of the back-up ring 3022 and constitutes the one-way valve structures, the isolation
Plug frame 302 is provided with arc notch 3023 with the side wall of the phase close neighbour of drawing liquid base plate 3012, tells the setting of arc notch 3023 so that
Drawing liquid side base plate again drawing liquid when have space for its open, so as to open drawing liquid passage, the opposite side of drawing liquid side base plate is provided with
The check valve mechanism is constituted with the sealing surface that drawing liquid base plate 3012 matches, the filter membrane 303 is enclosed in and pushes away entering for liquid passage
On mouth.
As shown in Figure 5,6, produce for convenience, the needle stand 2 is preferably made up of front needle seat 2 and rear needle stand 2, the needle tubing
1 front end for being fixed on front needle seat 2, the rear end of the front needle seat 2 is provided with cylinder open cavity volume, and opening cavity volume end face center is provided with
With the through hole of the UNICOM of front end needle tubing 1, the through hole peripheral circular plane constitutes the sealing surface 203；The front end of the rear needle stand 2
The cavity volume opening for being again provided with cylinder open cavity volume, the front needle seat 2 and rear needle stand 2 is integrally formed needle stand with respect to merging to form
2, the cavity volume merging of the front needle seat 2 and rear needle stand 2 constitutes the cavity volume of filter 3 of cylinder, the internal diameter of the cavity volume of filter 3
Match with the external diameter of batching pig frame 302, the filter 3 is arranged in the cavity volume of filter 3, wherein, batching pig frame 302
Outer wall is liquid-tight with the madial wall of the cavity volume of filter 3 to be affixed.
This has the operation principle of the dispensation injection needle of unidirectional filtering function as follows：When taking out liquid, liquid enters through needle tubing 1
In entering the cavity volume of filter 3, cannot be introduced into because the pressure of liquid causes the liquid-tight phase of transverse slat 3014 to be attached on the end face of back-up ring 3022
The other end of liquid passage is pushed away, and under the pressure of liquid, drawing liquid base plate 3012 is pressed towards arc made by the soft elastic material
The side of v notch v 3023, and occur passage and the side wall of batching pig frame 302 between, liquid enters drawing liquid passage, medicine from the passage
Liquid is taken directly syringe, and after stopping drawing liquid action, liquid distress resolves, drawing liquid base plate 3012 recovers and through hole peripheral circular
The sealing surface 203 of plane composition is liquid-tight to be affixed, and prevents liquid and impurity backflow；When pushing away liquid, due to drawing liquid base plate 3012 with it is logical
Hole sealing surface 203 is liquid-tight to be affixed, and prevents liquid to release from drawing liquid passage, and liquid can only enter and push away liquid passage, is led to through pushing away liquid
Road entrance filter membrane 303 is filtered, then impurity is hindered in syringe, and liquid is entered and pushes away liquid passage, horizontal under the pressure of liquid
Plate 3014 is open opening check valve, then through pushing away the opening on liquid base plate 3013, then release from needle tubing 1, complete injection.
Claims (4)
1. a kind of dispensation injection needle with unidirectional filtering function, including needle tubing, needle stand and filter, needle tubing is fixed on needle stand
Front end, it is characterised in that：Filter is provided with the medicine liquid channel of the needle stand, is provided with mutually isolated in the filter
Drawing 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 liquid passage
Entrance point be provided with filter membrane, the entrance point of the drawing liquid passage is provided with check valve mechanism, and described pushing away is provided with unidirectional in liquid passage
Valve arrangement.
2. the dispensation injection needle with unidirectional filtering function according to claim 1, it is characterised in that：The filter
Including batching pig, batching pig frame and filter membrane, the batching pig includes a base plate, base plate one side center be provided with it is vertical every
Base plate is divided into left and right two parts by plate, the vertical partition plate, respectively drawing liquid base plate and pushes away liquid base plate, and the liquid base plate that pushes away is provided with
Opening, the vertical partition plate upper end pushes away liquid base plate side and is provided with the transverse slat for protruding horizontally up, and the batching pig is by soft elastic material
Make；The batching pig frame is similarly the cylindrical member being open in front and back, the shape of cross section of the batching pig frame and size and bottom
Plate matches, axial length more than vertical partition plate height, the vertical partition plate of the batching pig from batching pig frame towards needle tubing one
End is stretched into and is arranged in batching pig frame, and the base plate of the batching pig is liquid-tight with batching pig frame annular end face is affixed, vertical partition plate
Two sides it is liquid-tight with batching pig frame madial wall be affixed, the batching pig frame inner chamber other end is provided with longitudinal baffle, the longitudinal direction
Partition position is relative with vertical partition plate, and top and the vertical partition plate top of the longitudinal baffle offset the batching pig frame inner chamber
Two parts are separated into, side corresponding with drawing liquid base plate constitutes the drawing liquid passage, side corresponding with liquid base plate is pushed away constitutes institute
State and push away liquid passage, the position that the batching pig frame inwall is flushed with transverse slat is provided with two ends and extends to longitudinal baffle, raised gear
Circle, the transverse slat is attached on the back-up ring end face and constitutes the one-way valve structures, the batching pig frame and drawing liquid base plate phase close neighbour
Side wall be provided with arc notch, the opposite side of drawing liquid side base plate be provided with the sealing surface matched with drawing liquid base plate constitute it is described only
Valve system is returned, the entrance point for pushing away liquid passage is provided with filter membrane.
3. the dispensation injection needle with unidirectional filtering function according to claim 2, it is characterised in that：The base plate is circle
Shape, the batching pig frame is the cylindrical structural member being open in front and back.
4. the dispensation injection needle with unidirectional filtering function according to Claims 2 or 3, it is characterised in that：The needle stand
It is made up of front needle seat and rear needle stand, the needle tubing is fixed on the front end of front needle seat, the rear end of the front needle seat is provided with cylinder and opens
Mouth cavity volume, the cavity volume end face center that is open is provided with the through hole with front end needle tubing UNICOM, and the through hole peripheral circular plane constitutes described
Sealing surface；The front end of the rear needle stand is again provided with the cavity volume opening phase of cylinder open cavity volume, the front needle seat and rear needle stand
Merging is formed and is integrally formed needle stand, the cavity volume of the front needle seat and rear needle stand merges composition filter cavity volume, the filtration
Device is arranged in filter cavity volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620504518.3U CN206120739U (en) | 2016-05-27 | 2016-05-27 | Syringe needle dispenses with one -way filtering capability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620504518.3U CN206120739U (en) | 2016-05-27 | 2016-05-27 | Syringe needle dispenses with one -way filtering capability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206120739U true CN206120739U (en) | 2017-04-26 |
Family
ID=58560749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620504518.3U Withdrawn - After Issue CN206120739U (en) | 2016-05-27 | 2016-05-27 | Syringe needle dispenses with one -way filtering capability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206120739U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105919806A (en) * | 2016-05-27 | 2016-09-07 | 浙江康德莱医疗器械股份有限公司 | Dispensing injection needle with one-way filtration function |
-
2016
- 2016-05-27 CN CN201620504518.3U patent/CN206120739U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105919806A (en) * | 2016-05-27 | 2016-09-07 | 浙江康德莱医疗器械股份有限公司 | Dispensing injection needle with one-way filtration function |
| CN105919806B (en) * | 2016-05-27 | 2018-09-21 | 浙江康德莱医疗器械股份有限公司 | Dispensation injection needle with unidirectional filtering function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170426 Effective date of abandoning: 20180921 |