CN205964631U - Syringe pushes away liquid column plug assembly - Google Patents
Syringe pushes away liquid column plug assembly Download PDFInfo
- Publication number
- CN205964631U CN205964631U CN201620597898.XU CN201620597898U CN205964631U CN 205964631 U CN205964631 U CN 205964631U CN 201620597898 U CN201620597898 U CN 201620597898U CN 205964631 U CN205964631 U CN 205964631U
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- China
- Prior art keywords
- elastic component
- convex stupefied
- piston
- protruding stupefied
- plug assembly
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Abstract
The utility model discloses a syringe pushes away liquid column plug assembly, the plunger subassembly includes piston, piston rod and piston handle, the piston constitute in the elastic component and with support piece that the elastic component matches at outer elastic component and parcel by setting up, along sealed protruding stupefied along being provided with the round respectively with down on the elastic component lateral wall: the upper seal is protruding stupefied protruding stupefied with the lower seal, the elastic component inside wall on to be provided with the protruding stupefied and lower damping of damping protruding stupefied with upper seal protruding stupefied and the protruding stupefied corresponding position of lower seal, elastic component inboard middle part be provided with the round recess, to set up the round protruding stupefied the position that corresponds of support piece and groove phase, piston rod and support piece's lower terminal surface swing joint. The utility model discloses a sealing performance to the improvement of piston structure, under the circumstances that realizes low resistance, when guaranteeing the push -and -pull.
Description
Technical field
This utility model is related to a kind of syringe and pushes away fluid column plug assembly, and a kind of syringe of specially a kind of lower resistance pushes away fluid column
Plug assembly, belongs to technical field of medical instruments.
Background technology
Syringe is a kind of common medical instruments, and early in the 15th century, Italian's Ka Di Nellie just proposes syringe
Principle.Mainly in order to liquid medicine injection or drawing liquid.Syringe can be used for armarium, container, the section such as in some chromatographys
Learning instrument passes through diaphragm of rubber to inject.With scientific and technological growing, many conventional operation of clinical staff get more and more
Replaced by novel medical device and apparatus and consumptive material, but work of making up a prescription heavy daily but remains unchanged, one is common
Nursing staff will prepare hundreds of bottle of medicine easily for one day, push-and-pull syringe more than thousands of times, and workload is especially big, and finger is long with palm
Phase all played callus in the past, and liquid work of joining day by day allows vast medical personnel to feel very to work hard and painful, also increases
Add everybody psychological burden and resentment.Therefore, injection with low resistance arises at the historic moment.Injection with low resistance is more common more
Tool hommization.Injection with low resistance is being taken out medicine, is being pushed away firmly significantly smaller during medicine, and artificial operation is more laborsaving, alleviates medical care
The working dynamics of personnel.Injection with low resistance employs the technology making sealing ring deform during promoting push rod, from
And reduce the resistance between sealing ring and syringe inwall, but this syringe is due to sealing ring front end face and sealing ring supporting part
Part contact area very little, causes sealing ring to seal during deforming and cannot be guaranteed, reduce sealing reliability.
Utility model content
The purpose of this utility model is to provide for a kind of lower resistance dispensing injector with pin, is asked with solving the above-mentioned of prior art
Topic.
This utility model point purpose is achieved through the following technical solutions.
A kind of syringe pushes away fluid column plug assembly, and described plunger assembly includes piston, piston rod and piston handle；Described piston
It is made up of with the support member being wrapped in elastic component and mate with elastic component the elastic component being arranged on outer layer；Outside described elastic component
On wall, to be respectively arranged with a circle sealing convex stupefied for edge and lower edge：Upper sealing convex stupefied and lower seal convex stupefied；Described elastic component medial wall
It is convex stupefied that the convex stupefied corresponding position of the convex stupefied and lower sealing of upper and upper sealing is provided with the convex stupefied and lower damping of upper damping；Described elasticity
Part middle inside is provided with a circle groove, and described support member position setting one circle corresponding with groove is convex stupefied；Described work
Stopper rod is flexibly connected with the lower surface of support member.
The described convex stupefied longitudinal section that seals is semicircle, rectangle or trapezoidal.
Described piston rod adopts universal connection with the lower surface of support member.
The edge of the upper surface of described support member and lower surface is set to chamfering or fillet, and damping so can be allowed convex
During the stupefied extruding with support member, strength change is relatively smooth.
The beneficial effects of the utility model are：
1st, this utility model is by the improvement to piston structure, close in the case of realizing lower resistance it is ensured that during push-and-pull
Sealing property；
2nd, pass through the universal connection between piston rod and piston, sealing can be effectively ensured convex stupefied interior with syringe main body
Wall laminating and sealing, it is to avoid in traditional structure, when piston rod tilts, then piston also and then tilts, leads to seal convex stupefied do not fit
Syringe main body.
Brief description
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the A portion enlarged drawing of Fig. 1；
In figure：1st, syringe main body 2, elastic component 3, support member 4, sealing convex stupefied 5, damping convex stupefied 6, groove
7th, piston rod.
Specific embodiment
Of the present utility model construction featuress are expanded on further below in conjunction with the accompanying drawings with specific embodiment.
A kind of syringe as shown in Figure 1 pushes away fluid column plug assembly, and described plunger assembly includes piston, piston rod 7 and piston
Handle；Described piston is by the elastic component 2 being arranged on outer layer and 3 groups of support member being wrapped in elastic component 2 and mate with elastic component
Become；On described elastic component 2 lateral wall, edge and lower edge are respectively arranged with a circle sealing convex stupefied 4：Upper sealing convex stupefied and lower seal convex stupefied；
On described elastic component 2 medial wall, the convex stupefied corresponding position of the convex stupefied and lower sealing of upper sealing is provided with damping convex stupefied 5：Upper resistance
The convex stupefied and lower damping of Buddhist nun is convex stupefied；Described elastic component 2 middle inside is provided with a circle groove 6, described support member 3 and groove 6
It is convex stupefied that corresponding position setting one circle is mated with groove 6；Described piston rod 7 is flexibly connected with the lower surface of support member 3.
Described convex stupefied 4 longitudinal section that seals is semicircle, rectangle or trapezoidal.
Described piston rod 7 adopts universal connection with the lower surface of support member 3.
The described upper surface of support member 3 and the edge of lower surface are set to chamfering or fillet, so can allow damping
Convex stupefied 5 and support member 3 extruding when, strength change relatively smooth.
During use, illustrated upward with syringe needle：When piston above pushes away, on support member 3 relative resilient part 2 move, support member 3 upper
End face convex with the upper damping of elastic component 2 stupefied close, contact and extrude；Upper damping convex stupefied expand laterally, and then upper sealing convex stupefied
Outer, thus keeping the sealing property with syringe main body 1 inwall.
When piston is drop-down, support member 3 relative resilient part moves down, and the lower surface of support member 3 is convex with the lower damping of elastic component 2
Stupefied close, contact and extrude；Lower damping convex stupefied expand laterally, and then convex stupefied outer of lower sealing, keep and syringe main body 1 inwall
Sealing property.
Claims (4)
1. a kind of syringe pushes away fluid column plug assembly, and described plunger assembly includes piston, piston rod and piston handle；It is characterized in that：
Described piston is made up of with the support member being wrapped in elastic component and mated with elastic component the elastic component being arranged on outer layer；Described
On elastic component lateral wall, to be respectively arranged with a circle sealing convex stupefied for edge and lower edge：Upper sealing convex stupefied and lower seal convex stupefied；Described bullet
Property part medial wall on upper sealing convex stupefied and lower sealing convex stupefied corresponding position be provided with upper damping convex stupefied and lower damp convex stupefied；
Described elastic component middle inside is provided with a circle groove, and described support member position setting one circle corresponding with groove is convex
Stupefied；Described piston rod is flexibly connected with the lower surface of support member.
2. a kind of syringe according to claim 1 push away fluid column plug assembly it is characterised in that：Convex stupefied the indulging of described sealing
Section is semicircle, rectangle or trapezoidal.
3. a kind of syringe according to claim 1 push away fluid column plug assembly it is characterised in that：Described piston rod and support
The lower surface of part adopts universal connection.
4. a kind of syringe according to claim 1 push away fluid column plug assembly it is characterised in that：The upper end of described support member
The edge of face and lower surface is set to chamfering or fillet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620597898.XU CN205964631U (en) | 2016-06-17 | 2016-06-17 | Syringe pushes away liquid column plug assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620597898.XU CN205964631U (en) | 2016-06-17 | 2016-06-17 | Syringe pushes away liquid column plug assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205964631U true CN205964631U (en) | 2017-02-22 |
Family
ID=58021169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620597898.XU Active CN205964631U (en) | 2016-06-17 | 2016-06-17 | Syringe pushes away liquid column plug assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205964631U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105999483A (en) * | 2016-06-17 | 2016-10-12 | 上海宝舜医疗器械有限公司 | Injector liquid push plunger assembly |
| WO2020259494A1 (en) * | 2019-06-25 | 2020-12-30 | 北京北分瑞利分析仪器(集团)有限责任公司 | Piston sealing structure applicable in syringe |
-
2016
- 2016-06-17 CN CN201620597898.XU patent/CN205964631U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105999483A (en) * | 2016-06-17 | 2016-10-12 | 上海宝舜医疗器械有限公司 | Injector liquid push plunger assembly |
| WO2020259494A1 (en) * | 2019-06-25 | 2020-12-30 | 北京北分瑞利分析仪器(集团)有限责任公司 | Piston sealing structure applicable in syringe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |