CN207980123U - A kind of liquid precise filtering injector - Google Patents
A kind of liquid precise filtering injector Download PDFInfo
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- CN207980123U CN207980123U CN201720607466.7U CN201720607466U CN207980123U CN 207980123 U CN207980123 U CN 207980123U CN 201720607466 U CN201720607466 U CN 201720607466U CN 207980123 U CN207980123 U CN 207980123U
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- liquid
- liquid outlet
- injection tube
- filter device
- outlet channel
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Abstract
The utility model provides a kind of liquid precise filtering injector, including：Injection tube, the injection rod coordinated with it, injection tube front end are built-in with filter device；The filter device is internally provided with a fluid passage, at least one feed pathway for unidirectional drawing liquid and at least one liquid outlet channel for unidirectional drain, fluid passage one end is connected to feed pathway, liquid outlet channel, the fluid passage other end is connected to the needle holder inner cavity of injection tube, and feed pathway and the liquid outlet channel other end are connected to injection tube inner chamber；Check valve is both provided in feed pathway and liquid outlet channel, liquid outlet channel is provided with filter membrane close to injection tube inner chamber one end.And the problems such as these particles are costly is filtered using precision infusion set, so that it is directly filtered particle and precipitation when preparing liquid, achieve the effect that secondary filter, it is ensured that patient medication safety.
Description
Technical field
The utility model is related to the field of medical instrument technology, more particularly to a kind of liquid precise filtering injector.
Background technology
At present when Clinical practice liquid medicine applying, directly by syringe dosing or it is injected into human body, without carrying out phase
Close medical filtration processing.Existing liquid is encapsulated in vial more, and the rubber stopper or use of vial are pricked with the syringe needle of syringe
When grinding wheel cuts vial extraction liquid, the particles such as bottle stopper material bits or glass powder are easy mixed into the liquid；In addition, due to artificial
Drug preservation is improper or the reasons such as operation error are also easy to cause liquid and generate particulate matter.In dosing therapeutic process, meat
Eye, which is not easy the particle found and precipitation, to cause infusion safety hidden as the coarse syringe needle of syringe is added in infusion bottle (bag)
Suffer from.Again since common syringe does not have filtering function, these particles will be injected into patient's body together with liquid, from
And cause a variety of irreversible injuries of long-term hiding, less serious case that may induce the diseases such as inflammation of vein the body of patient, weight
Person is possibly even carcinogenic.When especially to children or newborn's medication, newborn more needs to carry out due to physiologic factor
Filter is handled, however can be had the function of dosing there is no a kind of syringe of simple possible now and be carried out medical filtration.
Utility model content
In order to solve the problems existing in the prior art, the utility model provides a kind of liquid precise filtering injector.The note
Emitter is not only at low cost, filtering safe, easy to use, during dosing, it is made directly to filter particle when preparing liquid and sink
It forms sediment, achievees the effect that secondary filter, it is ensured that patient medication safety.
In order to achieve the above objectives, the utility model uses following technological means：
A kind of liquid precise filtering injector, including：Injection tube, the injection rod coordinated with it, injection tube front end are built-in with
Filter device；The filter device is internally provided with a fluid passage, at least one feed pathway for unidirectional drawing liquid
With at least one liquid outlet channel for unidirectional drain, fluid passage one end is connected to feed pathway, liquid outlet channel, and liquid is logical
The road other end is connected to the needle holder inner cavity of injection tube, and feed pathway and the liquid outlet channel other end are connected to injection tube inner chamber；Into
Check valve is both provided in liquid channel and liquid outlet channel, liquid outlet channel is provided with filter membrane close to injection tube inner chamber one end.
The check valve includes inlet, liquid outlet, ball valve and elasticity resistance piece；Inlet is connect with liquid outlet, and into
The diameter of liquid mouth is less than the diameter of ball valve and liquid outlet, and ball valve gap setting hinders piece by elasticity and push down in liquid outlet, real
Existing liquid is from inlet toward liquid outlet one-way flow.
The quantity of the liquid outlet channel is one, and is arranged along filter device axis；Feed pathway is multiple, and feed liquor
Channel is centrosymmetric distribution.
The injection tube is an integral molding structure with filter device.
The injection tube is fabricated structure with filter device；Before the size shape and injection tube of the filter device
End inner cavity matches, and filter device front end is tapering point, when combination in tapering point insertion needle seat inner cavity, and injection tube inner wall with
Filter device is tightly connected.
The filter device rear end is filter end, and filter end inner cavity and the shape of the piston of injection rod front end match.
The filter membrane is nuclear pore membrane, poly (ether sulfone) film, polyester film or nylon membrane.
The filter membrane pore size filter is 1.2~15 microns.
The needle holder is nipple or quick connector.
Opposite and the prior art, the utility model have the following advantages：
The injection tube front end of the utility model is built-in with filter device；It is logical that the filter device is internally provided with liquid
Check valve is both provided in road, feed pathway and liquid outlet channel, feed pathway and liquid outlet channel, liquid outlet channel is in injection tube
Chamber one end is provided with filter membrane.Feed pathway be used for unidirectional drawing liquid, liquid outlet channel be used for unidirectional drain, while by filter membrane into
Row filtering liquid medicine.Filter device built in the utility model does not cause other workloads to user, in the same of normal use
The Shi Jinhang filterings of liquid.Not only at low cost, filtering safe is easy to use, during dosing, is visually not easy the particle found
Infusion safety hidden danger can be caused in the coarse syringe needle injection infusion bottle (bag) of syringe with precipitation, and use precision infusion set
The problems such as these particles are costly is filtered, so that it is directly filtered particle and precipitation when preparing liquid, reaches the effect of secondary filter
Fruit, it is ensured that patient medication safety.
Further, the centrally disposed advantage of liquid outlet channel is, liquid discharge is easy when center squeezes, drain extruding force
Small, filtering is abundant.When the distribution of feed pathway central symmetry can be convenient for drawing liquid, be further separated into syringe, drawing liquid efficiency
It is high.
Further, injection tube is an integral molding structure with filter device, disposable.
Further, the filter device inside injection tube is fabricated structure；It can individually be manufactured when manufacture, when use
It is combined assembly again, it is easy to use convenient for manufacture and transport.
Description of the drawings
Fig. 1 is liquid precise filtering injector schematic diagram；
Fig. 2 is filter device sectional view；
Fig. 3 be filter device along A-A to cross-section diagram；
Fig. 4 is liquid precise filtering injector usage state diagram；
Wherein, 1 is filter device；2 be injection tube；3 be injection rod；4 be piston；5 be filter end；6 be tapering point；1-1
For fluid passage；1-2 is feed pathway；1-3 is filter membrane, and 1-4 is liquid outlet channel, and 1-5 is elasticity resistance piece, and 1-6 is ball valve.
Specific implementation mode
The utility model is described further in the following with reference to the drawings and specific embodiments, the utility model is not limited to following
Embodiment.
As depicted in figs. 1 and 2, a kind of liquid precise filtering injector of the utility model includes：Injection tube 2 is matched with it
The injection rod 3 of conjunction, 2 front end of injection tube are built-in with filter device 1；The filter device 1 is internally provided with a fluid passage
1-1, at least one feed pathway 1-2 and at least one liquid outlet channel 1-4 for unidirectional drain for unidirectional drawing liquid, liquid
Channel one end 1-1 is connected to feed pathway 1-2, liquid outlet channel 1-4, the needle holder of the fluid passage 1-1 other ends and injection tube 2
Inner cavity is connected to, and feed pathway 1-2 and the liquid outlet channel 1-4 other ends are connected to 2 inner cavity of injection tube；Feed pathway 1-2 leads to liquid is gone out
Check valve is both provided in road 1-4, liquid outlet channel 1-4 is provided with filter membrane 1-3 close to 2 inner cavity one end of injection tube.Feed pathway
The check valve setting direction of 1-2 and liquid outlet channel 1-4 is opposite.
As shown in Fig. 2, check valve includes inlet, liquid outlet, ball valve 1-6 and elasticity resistance piece 1-5；Inlet and liquid outlet
Connection, and the diameter of inlet is less than the diameter of ball valve 1-6 and liquid outlet, ball valve 1-6 gap settings pass through in liquid outlet
Elasticity resistance piece 1-5 is pushed down, and realizes liquid from inlet toward liquid outlet one-way flow.Ball valve is rolling made of steel ball or medical material
Pearl.
As shown in figure 3, the quantity of liquid outlet channel 1-4 is one, and it is arranged along 1 axis of filter device；Feed pathway 1-2 is
It is multiple, and feed pathway 1-2 is centrosymmetric distribution.Advantage centrally disposed liquid outlet channel 1-4 is, liquid when center squeezes
Discharge is easy, and drain extruding force is small, and filtering is abundant.When the distribution of feed pathway 1-2 central symmetries can be convenient for drawing liquid, shunted
Into in syringe, drawing liquid is efficient.
Injection tube 2 is an integral molding structure with filter device 1.It is clinical disposable.
In addition, as shown in figure 4, injection tube 2 and filter device 1 are fabricated structure；The size of the filter device 1
Shape matches with 2 front end inner cavity of injection tube, and 1 front end of filter device is tapering point 6, when combination in 6 insertion needle seat of tapering point
In chamber, and 2 inner wall of injection tube is tightly connected with filter device 1.
In order to by syringe liquid all filtering discharge, 1 rear end of filter device be filter end 5,5 inner cavity of filter end with
The shape of the piston 4 of 3 front end of injection rod matches.
Filter membrane 1-3 is the medical grade materials such as nuclear pore membrane, poly (ether sulfone) film, polyester film or nylon membrane；Filter membrane 1-3 mistakes
Filter opening diameter is 1.2~15 microns.
Different syringe needles uses for convenience, and needle holder is nipple or quick connector.
As shown in figure 4, when the utility model is used, first injection rod 3 is removed from injection tube 2, then filter device 1 is filled
Enter in injection tube 2, and be pushed into bottommost, finally injection rod 3 is inserted into injection tube 2, liquid configuration can be carried out, and can
Carry out liquid secondary filter.When pull injection rod 3 be displaced outwardly when, injection tube 2 generate negative pressure, liquid under the action of negative pressure from
Syringe needle enters fluid passage 1-1, and due to the effect of check valve, liquid can only carry out drawing liquid entrance by several feed pathway 1-2
In injection tube 2.When squeezing injection rod 3 and moving inward, liquid first passes through after filter membrane 1-3 is filtered, and passes through liquid outlet channel
1-4 enters fluid passage 1-1 discharges.Whole operation does not cause other workloads to user, while normal use into
The filtering of liquid is gone.
The utility model not only can also be filtered physiological saline, water, chemical reagent etc. with filtering liquid medicine.Structure
Simply, it works well.
More than, the only preferred embodiment of the utility model is not limited only to the scope of the utility model, Fan Yiben
The equivalence changes and modification that the content of utility model patent range is done all should be the technology scope of the utility model.
Claims (9)
1. a kind of liquid precise filtering injector, which is characterized in that including：Injection tube (2), the injection rod (3) coordinated with it, note
Shooting cylinder (2) front end is built-in with filter device (1)；The filter device (1) is internally provided with a fluid passage (1-1), extremely
A few feed pathway (1-2) for unidirectional drawing liquid and at least one liquid outlet channel (1-4) for unidirectional drain, liquid are logical
Road one end (1-1) is connected to feed pathway (1-2), liquid outlet channel (1-4), fluid passage (1-1) other end and injection tube (2)
Needle holder inner cavity connection, feed pathway (1-2) and liquid outlet channel (1-4) other end are connected to injection tube (2) inner cavity；Feed liquor is logical
Check valve is both provided in road (1-2) and liquid outlet channel (1-4), liquid outlet channel (1-4) is arranged close to injection tube (2) inner cavity one end
There is filter membrane (1-3).
2. a kind of liquid precise filtering injector according to claim 1, it is characterised in that：The check valve include into
Liquid mouth, liquid outlet, ball valve (1-6) and elasticity resistance piece (1-5)；Inlet is connect with liquid outlet, and the diameter of inlet is less than ball
The diameter of valve (1-6) and liquid outlet, ball valve (1-6) gap setting hinders piece (1-5) by elasticity and pushes down in liquid outlet, real
Existing liquid is from inlet toward liquid outlet one-way flow.
3. a kind of liquid precise filtering injector according to claim 1, it is characterised in that：Liquid outlet channel (the 1-
4) quantity is one, and is arranged along filter device (1) axis；Feed pathway (1-2) is multiple, and feed pathway (1-2) is in
Central symmetry is distributed.
4. a kind of liquid precise filtering injector according to claim 1, it is characterised in that：The injection tube (2) with
Filter device (1) is an integral molding structure.
5. a kind of liquid precise filtering injector according to claim 1, it is characterised in that：The injection tube (2) with
Filter device (1) is fabricated structure；The size shape of the filter device (1) matches with injection tube (2) front end inner cavity,
Filter device (1) front end is tapering point (6), when combination in tapering point (6) insertion needle seat inner cavity, and injection tube (2) inner wall with
Filter device (1) is tightly connected.
6. a kind of liquid precise filtering injector according to claim 1, it is characterised in that：The filter device (1)
Rear end is filter end (5), and filter end (5) inner cavity and the shape of the piston (4) of injection rod (3) front end match.
7. a kind of liquid precise filtering injector according to claim 1, it is characterised in that：The filter membrane (1-3)
For nuclear pore membrane, poly (ether sulfone) film, polyester film or nylon membrane.
8. a kind of liquid precise filtering injector according to claim 7, it is characterised in that：The filter membrane (1-3)
Pore size filter is 1.2~15 microns.
9. a kind of liquid precise filtering injector according to claim 1, it is characterised in that：The needle holder is screw thread
Connector or quick connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720607466.7U CN207980123U (en) | 2017-05-26 | 2017-05-26 | A kind of liquid precise filtering injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720607466.7U CN207980123U (en) | 2017-05-26 | 2017-05-26 | A kind of liquid precise filtering injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207980123U true CN207980123U (en) | 2018-10-19 |
Family
ID=63804083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720607466.7U Active CN207980123U (en) | 2017-05-26 | 2017-05-26 | A kind of liquid precise filtering injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207980123U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110236942A (en) * | 2019-06-28 | 2019-09-17 | 江苏迪沃生物制品有限公司 | The accurate dispenser of the universal automatic switchover of one kind and its application method |
| CN110522650A (en) * | 2019-10-10 | 2019-12-03 | 朱姗姗 | A kind of Neurology medicine-feeding device for the medicine that prevents from choking |
-
2017
- 2017-05-26 CN CN201720607466.7U patent/CN207980123U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110236942A (en) * | 2019-06-28 | 2019-09-17 | 江苏迪沃生物制品有限公司 | The accurate dispenser of the universal automatic switchover of one kind and its application method |
| CN110522650A (en) * | 2019-10-10 | 2019-12-03 | 朱姗姗 | A kind of Neurology medicine-feeding device for the medicine that prevents from choking |
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