CN207722184U - A kind of precise liquid medicine filter for syringe - Google Patents
A kind of precise liquid medicine filter for syringe Download PDFInfo
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- CN207722184U CN207722184U CN201720607468.6U CN201720607468U CN207722184U CN 207722184 U CN207722184 U CN 207722184U CN 201720607468 U CN201720607468 U CN 201720607468U CN 207722184 U CN207722184 U CN 207722184U
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- filter
- liquid
- liquid outlet
- outlet channel
- feed pathway
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Abstract
The utility model provides a kind of precise liquid medicine filter for syringe, including：Filter body, filter body front end are the tapering point for connecting needle, and rear end is the filter end for connecting injection tube needle holder；The filter body 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, fluid passage is centrally disposed along tapering point, and feed pathway and the liquid outlet channel other end are connected to filter end inner cavity；Check valve is both provided in feed pathway and liquid outlet channel, liquid outlet channel is provided with filter membrane close to filter end one end.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, achievees 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 secondary filters for syringe
Device.
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 secondary filter for syringe
Device.The syringe is not only at low cost, and filtering safe is easy to use, during dosing, so that it is directly filtered when preparing liquid micro-
Grain and precipitation, achieve 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 precise liquid medicine filter for syringe, including：Filter body, the filter body front end are
For the tapering point of connecting needle, rear end is the filter end for connecting injection tube needle holder；Inside the filter body
Be arranged there are one fluid passage, at least one feed pathway for unidirectional drawing liquid and it is at least one be used for unidirectional drain go out liquid
Channel, fluid passage one end are connected to feed pathway, liquid outlet channel, and fluid passage is centrally disposed along tapering point, feed pathway
It is connected to the liquid outlet channel other end with filter end inner cavity；Check valve, liquid outlet channel are both provided in feed pathway and liquid outlet channel
Filter end one end is provided with filter membrane.
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 body axis；Feed pathway is multiple, and into
Liquid channel is centrosymmetric distribution.
The connecting hole of the filter end and the shape of needle holder outer wall 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 and tapering point is nipple or quick connector.
Opposite and the prior art, the utility model have the following advantages：
The precise liquid medicine filter of the utility model, can be used on syringe, by with injection tube front end with connect into
Row medical filtration, filter body are internally provided with fluid passage, feed pathway and liquid outlet channel, feed pathway and liquid outlet channel
It is inside both provided with check valve, liquid outlet channel is provided with filter membrane close to injection tube inner chamber one end.Feed pathway is used for unidirectional drawing liquid,
Liquid outlet channel is used for unidirectional drain, while being filtered liquid by filter membrane.The filter body assembling of the utility model makes
Used time does not cause other workloads to user, and the filtering of liquid has been carried out while normal use.It is not only at low cost, mistake
Filter safety, it is easy to use, during dosing, visually it is not easy the particle found and precipitation can be defeated with the coarse syringe needle injection of syringe
In liquid bottle (bag), cause infusion safety hidden danger, and the problems such as these particles are costly filtered using precision infusion set, make its with
Particle and precipitation are directly filtered when liquid processed, achievees the effect that secondary filter, it is ensured that patient medication safety.It can be separately fabricated, raw
Production, is used cooperatively with injection device, at low cost, simple in structure, convenient for promoting.
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.
Description of the drawings
Fig. 1 is the precise liquid medicine filter schematic diagram for syringe；
Fig. 2 is filter body sectional view；
Fig. 3 be filter body along A-A to cross-section diagram；
Wherein, 1 is filter body；2 be injection tube；3 be injection rod；4 be needle holder；5 be filter end；6 be taper
End；1-1 is 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 precise liquid medicine filter for syringe of the utility model, including：Filter
Ontology 1,1 front end of filter body are the tapering point 6 for connecting needle, and rear end is for connecting 2 syringe needle of injection tube
The filter end 5 of seat 4；The filter body 1 is internally provided with a fluid passage 1-1, is at least one for unidirectional drawing liquid
Feed pathway 1-2 and at least one liquid outlet channel 1-4 for unidirectional drain, the one end fluid passage 1-1 and feed pathway 1-
2, liquid outlet channel 1-4 is connected to, and fluid passage 1-1 is centrally disposed along tapering point 6, and feed pathway 1-2 and liquid outlet channel 1-4 are another
End is connected to 5 inner cavity of filter end；Check valve is both provided in feed pathway 1-2 and liquid outlet channel 1-4, liquid outlet channel 1-4 is close
5 one end of filter end is provided with filter membrane 1-3.The check valve setting direction of feed pathway 1-2 and liquid outlet channel 1-4 is opposite.Filtering
The shape of the connecting hole and 4 outer wall of needle holder at end 5 matches.
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.
As shown in figure 3, the quantity of liquid outlet channel 1-4 is one, and it is arranged along 1 axis of filter body；Feed pathway 1-2
To be multiple, and feed pathway 1-2 is centrosymmetric distribution.Advantage centrally disposed liquid outlet channel 1-4 is, medicine when center squeezes
Liquid 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, carry out
It is further separated into syringe, drawing liquid is efficient.
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.
It, first will be by 4 spiral shell of needle holder of filter body 1 and 2 front end of injection tube as shown in Figure 1, when the utility model is used
Line connects, then injection rod 3 is inserted into injection tube 2, can carry out liquid configuration, and can carry out liquid secondary filter.When
When injection rod 3 being pulled to be displaced outwardly, injection tube 2 generates negative pressure, and liquid liquid under the action of negative pressure enters liquid from syringe needle and leads to
Road 1-1, due to the effect of check valve, liquid can only carry out drawing liquid by several feed pathway 1-2 and enter in injection tube 2.When crowded
Pressure injection rod 3 is when moving inward, and liquid first passes through after filter membrane 1-3 is filtered, and enters fluid passage by liquid outlet channel 1-4
1-1 is discharged, and the liquid by syringe needle is filtered liquid.Whole operation does not cause other workloads to user,
The filtering of liquid has been carried out while normal use.
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 (7)
1. a kind of precise liquid medicine filter for syringe, which is characterized in that including：Filter body (1), the filtering
Device ontology (1) front end is the tapering point (6) for connecting needle, and rear end is the filtering for connecting injection tube (2) needle holder (4)
It holds (5)；The filter body (1) be internally provided with fluid passage (1-1), it is at least one for unidirectional drawing liquid into
Liquid channel (1-2) and at least one liquid outlet channel (1-4) for unidirectional drain, fluid passage one end (1-1) and feed pathway
(1-2), liquid outlet channel (1-4) are connected to, and fluid passage (1-1) is centrally disposed along tapering point (6), feed pathway (1-2) and are gone out
Liquid channel (1-4) other end is connected to filter end (5) inner cavity；It is both provided with list in feed pathway (1-2) and liquid outlet channel (1-4)
To valve, liquid outlet channel (1-4) is provided with filter membrane (1-3) close to filter end (5) one end.
2. a kind of precise liquid medicine filter for syringe according to claim 1, it is characterised in that：Described is unidirectional
Valve includes inlet, liquid outlet, ball valve (1-6) and elasticity resistance piece (1-5)；Inlet is connect with liquid outlet, and inlet is straight
Diameter is less than the diameter of ball valve (1-6) and liquid outlet, and ball valve (1-6) gap setting hinders piece (1-5) in liquid outlet, and by elasticity
It pushes down, realizes liquid from inlet toward liquid outlet one-way flow.
3. a kind of precise liquid medicine filter for syringe according to claim 1, it is characterised in that：Described goes out liquid
The quantity in channel (1-4) is one, and is arranged along filter body (1) axis；Feed pathway (1-2) is multiple, and feed liquor is logical
Road (1-2) is centrosymmetric distribution.
4. a kind of precise liquid medicine filter for syringe according to claim 1, it is characterised in that：The filtering
The shape of the connecting hole and needle holder (4) outer wall of (5) is held to match.
5. a kind of precise liquid medicine filter for syringe according to claim 1, it is characterised in that：The filtering
Film (1-3) is nuclear pore membrane, poly (ether sulfone) film, polyester film or nylon membrane.
6. a kind of precise liquid medicine filter for syringe according to claim 5, it is characterised in that：The filtering
Film (1-3) pore size filter is 1.2~15 microns.
7. a kind of precise liquid medicine filter for syringe according to claim 1, it is characterised in that：The syringe needle
Seat (4) and tapering point (6) are nipple or quick connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720607468.6U CN207722184U (en) | 2017-05-26 | 2017-05-26 | A kind of precise liquid medicine filter for syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720607468.6U CN207722184U (en) | 2017-05-26 | 2017-05-26 | A kind of precise liquid medicine filter for syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207722184U true CN207722184U (en) | 2018-08-14 |
Family
ID=63090001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720607468.6U Active CN207722184U (en) | 2017-05-26 | 2017-05-26 | A kind of precise liquid medicine filter for syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207722184U (en) |
-
2017
- 2017-05-26 CN CN201720607468.6U patent/CN207722184U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210205 Address after: Luohe City, Henan province 462331 Yuanhui District Riverside Metro Xiangjiang Road Patentee after: Henan Shuguang Jianshi Industrial Development Co.,Ltd. Address before: Luohe City, Henan province 462331 Yuanhui District Riverside Metro Xiangjiang Road Patentee before: HENAN SHUGUANG JIANSHI MEDICAL EQUIPMENT GROUP Co.,Ltd. |
|
| TR01 | Transfer of patent right |