CN206081067U - Two -way filtration syringe needle that dispenses - Google Patents
Two -way filtration syringe needle that dispenses Download PDFInfo
- Publication number
- CN206081067U CN206081067U CN201620504543.1U CN201620504543U CN206081067U CN 206081067 U CN206081067 U CN 206081067U CN 201620504543 U CN201620504543 U CN 201620504543U CN 206081067 U CN206081067 U CN 206081067U
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- CN
- China
- Prior art keywords
- liquid
- needle
- base plate
- batching pig
- drawing liquid
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- 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- Withdrawn - After Issue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 two -way filtration syringe needle that dispenses includes needle tubing, needle file and filter equipment, and 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 and the drawing liquid passageway exit end that push away the liquid passageway all are 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 two -way filtration syringe needle that dispenses the drawing liquid when pushing away liquid, the liquid medicine respectively through the drawing liquid passageway with push away liquid channel flow, is crossed the impurity that filters off at the drawing liquid in -process and is kept apart between the filtration membrane of the check valve mechanism of drawing liquid channel -inlet end and exit end, and kept apart in the syringe by filtration membrane pushing away liquid in -process impurity, has guaranteed the drawing liquid and has pushed away the safety of liquid.
Description
Technical field
The utility model is related to a kind of safe medical needling instrument, particularly a kind of bi-directional filtered dispensation injection needle.
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 bi-directional filtered dispensation injection needle for pushing away liquid.
To achieve these goals, the utility model discloses a kind of bi-directional filtered dispensation injection needle, including needle tubing, needle stand
And filter, 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 with
Medicine liquid channel connects, and the entrance point for pushing away liquid passage and drawing liquid channel outlet are equipped with filter membrane, the drawing liquid passage
Entrance point is provided with check valve mechanism, and described pushing away in liquid passage is provided with one-way valve structures.
Compared with prior art, the bi-directional filtered dispensation injection needle of the utility model when drawing liquid is with liquid is pushed away, distinguish by liquid
Drawing liquid channel entrance end is isolated in the flowing of liquid passage, the impurity being filtered out during drawing liquid is pushed away by drawing liquid passage
Between check valve mechanism and the filter membrane of the port of export, and impurity is isolated in syringe by filter membrane during liquid is pushed away, it is ensured that
Drawing liquid and push away the safety of 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, bi-directional filtered dispensation injection needle includes needle tubing 1, needle stand 2 and filter 3, and needle tubing 1 is fixed on
The front end of needle stand 2, is provided with filter 3 in the medicine liquid channel of the needle stand 2, be provided with mutually isolated in the filter 3
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, the liquid passage that pushes away
Entrance point and drawing liquid channel outlet are equipped with filter membrane, and the entrance point of the drawing liquid passage is provided with check valve mechanism, described to push away
One-way valve structures are provided with liquid passage.
As shown in Figure 7,8, in this specific embodiment, the filter 3 includes batching pig 301, the frame of batching pig 301 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 sealing surface 203 matched with drawing liquid base plate 3012 constitutes the check valve mechanism, and the filter membrane 303 is enclosed in and pushes away liquid passage and enter
On mouth and drawing liquid channel outlet.
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.
The operation principle of this bi-directional filtered dispensation injection needle is as follows：When taking out liquid, liquid enters filter through needle tubing 1
In 3 cavity volumes, cannot be introduced into pushing away liquid passage 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, and under the pressure of liquid, drawing liquid base plate 3012 is pressed towards arc notch 3023 made by the soft elastic material
Side, and occur passage and the side wall of batching pig frame 302 between, liquid enters drawing liquid passage from the passage, then through exit
Filter membrane 303 is filtered, and impurity is hindered in drawing liquid passage, and liquid is inhaled into syringe, and after stopping drawing liquid action, liquid pressure disappears
Lose, the sealing surface that drawing liquid base plate 3012 recovers with through hole peripheral circular plane is constituted is liquid-tight to be affixed, prevent liquid and impurity backflow；
When pushing away liquid, it is affixed because drawing liquid base plate 3012 is liquid-tight with through hole sealing surface, prevents liquid to release from drawing liquid passage, liquid is only
Can enter and push away liquid passage, filter through pushing away filter membrane 303 at liquid channel entrance, then impurity is hindered in syringe, liquid is entered
Liquid passage is pushed away, under the pressure of liquid, transverse slat 3014 is open opening check valve, then through pushing away the opening on liquid base plate 3013,
Release from needle tubing 1 again, complete injection.
Claims (3)
1. a kind of bi-directional filtered dispensation injection needle, including needle tubing, needle stand and filter, needle tubing is fixed on the front end of needle stand, its
It is characterised by：Filter is provided with the medicine liquid channel of the needle stand, mutually isolated drawing liquid is provided with the filter and is led to
Road 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, the entrance point for pushing away liquid passage
And drawing liquid channel outlet is equipped with filter membrane, the entrance point of the drawing liquid passage is provided with check valve mechanism, described to push away liquid passage
In be provided with one-way valve structures；The filter includes batching pig, batching pig frame and filter membrane, and the batching pig includes a bottom
Plate, base plate one side center is provided with vertical partition plate, and base plate is divided into left and right two parts, respectively drawing liquid base plate by the vertical partition plate
With push away liquid base plate, the liquid base plate that pushes away is provided with opening, and the vertical partition plate upper end pushes away liquid base plate side and is provided with the horizontal stroke for protruding horizontally up
Plate, the batching pig is made up of soft elastic material；The batching pig frame is similarly the cylindrical member being open in front and back, the isolation
The shape of cross section and size and base plate of plug frame matches, axial length more than vertical partition plate height, the batching pig it is vertical
The one end of dividing plate from batching pig frame towards needle tubing is stretched into and is arranged in batching pig frame, and the base plate of the batching pig and batching pig frame
Annular end face is liquid-tight to be affixed, and two sides of vertical partition plate are liquid-tight with batching pig frame madial wall to be affixed, and the batching pig frame inner chamber is another
One end is provided with longitudinal baffle, and the longitudinal baffle position is relative with vertical partition plate, the top of the longitudinal baffle and vertical partition plate
Top to offset and be separated into two parts by the batching pig frame inner chamber, and side corresponding with drawing liquid base plate constitutes the drawing liquid passage,
Side corresponding with liquid base plate is pushed away pushes away liquid passage described in constituting, and the position that the batching pig frame inwall is flushed with transverse slat is provided with two ends
Longitudinal baffle, raised back-up ring is extended to, the transverse slat is attached on the back-up ring end face and constitutes the one-way valve structures, described
Batching pig frame is provided with arc notch with the side wall of drawing liquid base plate phase close neighbour, and the opposite side of drawing liquid side base plate is provided with and drawing liquid bottom
The sealing surface that plate matches constitutes the check valve mechanism, and the entrance point for pushing away liquid passage and drawing liquid channel outlet were equipped with
Filter membrane.
2. bi-directional filtered dispensation injection needle according to claim 1, it is characterised in that：The base plate for circle, it is described every
It is the cylindrical structural member being open in front and back from plug frame.
3. bi-directional filtered dispensation injection needle according to claim 1 and 2, it is characterised in that：The needle stand by front needle seat and
Afterwards needle stand is constituted, and 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, opening
Cavity volume end face center is provided with the through hole with front end needle tubing UNICOM, and the through hole peripheral circular plane constitutes the sealing surface；It is described
Afterwards the front end of needle stand be again provided with cylinder open cavity volume, the front needle seat and rear needle stand cavity volume opening it is relative merge form one
Body constitutes the cavity volume of needle stand, the front needle seat and rear needle stand and merges composition filter cavity volume, and the filter was arranged on
In filter device cavity volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620504543.1U CN206081067U (en) | 2016-05-27 | 2016-05-27 | Two -way filtration syringe needle that dispenses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620504543.1U CN206081067U (en) | 2016-05-27 | 2016-05-27 | Two -way filtration syringe needle that dispenses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206081067U true CN206081067U (en) | 2017-04-12 |
Family
ID=58471249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620504543.1U Withdrawn - After Issue CN206081067U (en) | 2016-05-27 | 2016-05-27 | Two -way filtration syringe needle that dispenses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206081067U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105832547B (en) * | 2016-05-27 | 2018-07-24 | 浙江康德莱医疗器械股份有限公司 | Bi-directional filtered dispensation injection needle |
-
2016
- 2016-05-27 CN CN201620504543.1U patent/CN206081067U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105832547B (en) * | 2016-05-27 | 2018-07-24 | 浙江康德莱医疗器械股份有限公司 | Bi-directional filtered 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: 20170412 Effective date of abandoning: 20180724 |
|
| AV01 | Patent right actively abandoned |