CN208770563U - A kind of security closed positive pressure needle-free connector - Google Patents
A kind of security closed positive pressure needle-free connector Download PDFInfo
- Publication number
- CN208770563U CN208770563U CN201721761195.7U CN201721761195U CN208770563U CN 208770563 U CN208770563 U CN 208770563U CN 201721761195 U CN201721761195 U CN 201721761195U CN 208770563 U CN208770563 U CN 208770563U
- Authority
- CN
- China
- Prior art keywords
- elastomer
- shell
- infusion
- positive pressure
- pressure needle
- 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.)
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Links
- 229920001971 elastomer Polymers 0.000 claims abstract description 81
- 239000000806 elastomer Substances 0.000 claims abstract description 68
- 238000001802 infusion Methods 0.000 claims abstract description 48
- 239000007787 solid Substances 0.000 claims abstract description 28
- 230000001681 protective effect Effects 0.000 claims abstract description 22
- 210000003205 muscle Anatomy 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 230000008676 import Effects 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims abstract description 4
- 230000008569 process Effects 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 claims description 12
- 229910003460 diamond Inorganic materials 0.000 claims description 8
- 239000010432 diamond Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000741 silica gel Substances 0.000 claims description 4
- 229910002027 silica gel Inorganic materials 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000001739 rebound effect Effects 0.000 abstract description 2
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- -1 2.1 Substances 0.000 description 1
- 229920001875 Ebonite Polymers 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008952 bacterial invasion Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006386 memory function Effects 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a kind of security closed positive pressure needle-free connectors; including shell, elastomer, connector, protective cap, shell upper/lower terminal is separately formed infusion import and the infusion outlet cooperated with external infusion equipment and interior of shell forms accommodating cavity；Elastomer is arranged in the accommodating cavity of shell and elastomer is made of solid part and hollow part, the solid part and shell of elastomer fit closely to form sealing structure to infusion outlet inside wall, the solid part of elastomer processes hole, is machined with V-shape spring return muscle on the hollow part outer wall of elastomer.The utility model will not generate clogging, and in elastomer rebound, can steady, straight line rebound, elastomer will not be stuck in accommodating cavity, and the rebound effect of elastomer has been effectively ensured.
Description
Technical field
The utility model relates to a kind of security closed positive pressure needle-free connectors of infusion, belong to medical instruments field.
Background technique
During infusion, connector is generally required by liquid medicine injecting device and venous detaining needle or inlying catheter
It is connected with each other, and real training dosing etc. operates, and the connector being commonly used is positive pressure needle-free connector.Positive pressure needle-free connector is one
Kind can form a positive pressure on pipeline automatically, push liquid to human body by pipeline automatically when pulling up infusion connector, from
And blood is avoided to cause plugging phenomenon to the reflux of needle tubing.
In the prior art, positive pressure needle-free connector generally comprises shell, rubber plug, pedestal etc., and wherein rubber plug is as spool to whole
The airtightness of a connector is most important.But because the material is soft, mechanical strength is lower, elastic recovery speed is slow for rubber plug, returned in rubber plug
During multiple, situations such as easily causing bacterial invasion generation, and rubber plug compressive deformation track is not fixed, and is easy to produce the phenomenon of leakage.
CN2015102128682 discloses a kind of positive pressure connector, it includes needleless joint and rubber plug, and needleless joint includes
Access interface, output port and one have a cavity of inner cavity, it is interior it is intracavitary be equipped with an internal core print seat, rubber plug includes a solid part and hollow
Portion, the side wall of solid part are equipped at least one groove, and the outer wall of hollow part is equipped at least one and returns for increasing hollow part elasticity
Multiple rib, rubber plug are set in the inner cavity of needleless joint, and the access interface of solid part and needleless joint forms sealing knot
Structure, hollow part are secured to internal core print seat.This application is equipped at least one rib by the outer wall in hollow part, realize hollow part and
When spring back, and the reasonable Arrangement of rib can limit the deformation direction of rubber plug.But because the groove of solid part is equipped on side wall
, when accessing infusion equipment, under the squeezing action of infusion equipment, each position distortions of rubber plug are inconsistent, and rubber plug is caused to set
Fluted side compression deformation is big, and does not set groove side compressed shape and become smaller, and causes rubber plug solid part obliquely to enter interior intracavitary, gently
Person, the circumferential gap size between rubber plug surface and access interface inner wall is uneven, influences transfusion liquid flow velocity, severe one causes part
Blocking, and while still there is the risk being stuck in inner cavity when rebounding.
Utility model content
In view of the deficiency of the prior art, the purpose of the utility model is to provide one kind retain existing positive pressure without
Better tightness and safer security closed positive pressure needle-free connector on the basis of adapter function.
A kind of in order to achieve the above purposes, the technical solution adopted by the utility model is: security closed positive pressure needle-free connector, packet
Shell, elastomer, connector, protective cap are included, shell upper/lower terminal has been separately formed infusion import and has set with external infusion
Accommodating cavity is formed for the infusion outlet and interior of shell of cooperation；Elastomer is arranged in the accommodating cavity of shell and elastomer is by reality
Center portion and hollow part are constituted, and the solid part and shell of elastomer fit closely to form sealing structure to infusion outlet inside wall, special
Sign is that the solid part of above-mentioned elastomer processes hole, is machined with V-shape spring return on the hollow part outer wall of elastomer
Muscle；Connector includes elastomer stacker, protective cap attachment base, and elastomer stacker and elastomer hollow part are far from infusion
One end of outlet connects, and protective cap attachment base connect with protective cap, is fixedly connected between connector and shell, and connector center adds
Work has the channel for liquid flowing, and protective cap center is also provided with the channel for liquid flowing.
Preferably, above-mentioned hole is diamond shape hole or special-shaped hole.
Preferably, above-mentioned V-shape spring return muscle is multiple and is dislocatedly distributed above and below in elastomer hollow part outer wall, institute
The opening of some V-shape spring return muscle is towards elastomer hollow part outer wall center.
It preferably, is screw thread tight fit between the infusion outlet and external infusion equipment of shell.
Preferably, material used in above-mentioned elastomer is memory silica gel material.
Preferably, the solid part of elastomer and hollow part junction periphery are machined with inclined-plane and block up, accordingly, the infusion of shell
Outlet bottom, which is machined with, blocks up the annular slope matched with inclined-plane, and the stifled angle for deviateing infusion direction in inclined-plane is 30-45 °.
Preferably, it is interference fitted, protects between the one end of elastomer stacker and elastomer hollow part far from infusion outlet
Cap attachment base inner wall is provided with screw thread and is threadedly coupled between protective cap.
Preferably, it riveted, be bonded or welded using steel between above-mentioned shell and connector.
Compared with prior art, the beneficial effect that the utility model has is:
1, by processing diamond shape hole or special-shaped hole, when accessing external infusion equipment, elasticity in elastomer solid part
Body solid part periphery is deformed by uniform extruding force, and solid part outer end plane deformation is at concave surface, and transfusion liquid is from solid part
Gap in periphery and shell between accommodating cavity reserves, and will not generate clogging, and in elastomer rebound, Neng Gouping
Surely, straight line is sprung back, and elastomer will not be stuck in accommodating cavity；
2, V-shape spring return muscle is because of reasonable distribution design, can when elastomer is sprung back, from the centre of elastomer to
Both sides rebound, has been effectively ensured the rebound effect of elastomer；
3, connector, protective cap etc. are arranged, can be effective dust, fungi-proofing on the basis of ease of assembly, improve infusion
Safety, avoid hidden danger dispute；
4, it is as caused by elastomer stereomutation that needleless joint, which generates positive pressure,.
Detailed description of the invention
Fig. 1 is the utility model structural perspective
Fig. 2 is the utility model structure sectional view
Fig. 3 is that the utility model removes the structural perspective after shell
Fig. 4 is elastomer described in the utility model by external infusion equipment structural schematic diagram after extruding
Wherein, 1, shell, 1.1, infusion outlet, 1.2, accommodating cavity, 2, elastomer, 2.1, solid part, 2.2, hollow part,
2.3, inclined-plane is stifled, 3, connector, 3.1, elastomer stacker, 3.2, protective cap attachment base, 4, protective cap, 5, diamond shape or irregularly-shaped hole
Hole, 6, V-shape spring return muscle, 7, external infusion equipment.
Specific embodiment
Presently in connection with attached drawing, the utility model is further described.Obviously, therefore the utility model cannot be limited in
Among the embodiment described range.Based on the embodiments of the present invention, those of ordinary skill in the art are not making wound
Every other embodiment obtained under the premise of the property made is worked, all should belong to the protection range of the utility model.It needs to illustrate
, when building block is referred to as " being fixed on " another component, it can directly on the other part or there may also be
Component placed in the middle.When a component is considered as " connection " another component, it can be directly to another component or
The component placed in the middle that person may be simultaneously present.Term used in this specification " going up ", " under ", " left side ", " right side ", "front", "rear" with
And similar expression is for illustrative purposes only, and model, size, condition are not specified in following embodiments, conventionally,
Or it is selected according to product manual.
As shown in Figs 1-4, the security closed positive pressure needle-free connector of the utility model, including shell 1, elastomer 2, connector
3, protective cap 4, the left and right both ends of shell 1 are separately formed infusion import and defeated with 7 screw thread tight fit of external infusion equipment
Accommodating cavity 1.2 is formed inside liquid outlet 1.1 and shell 1；Elastomer 2 is arranged in the accommodating cavity 1.3 of shell 1 and elastomer 2
It is made of solid part 2.1 and hollow part 2.2, the solid part 2.1 of elastomer 2 exports 1.2 inner walls with the infusion of shell 1 and fits closely
Form sealing structure, the solid part 2.1 of elastomer 2 is machined with diamond shape or special-shaped hole 5, on 2.2 outer wall of hollow part of elastomer 2
It is machined with V-shape spring return muscle 6；Connector 3 includes elastomer stacker 3.1, protective cap attachment base 3.2, elastomer
Stacker 3.1 and 2 hollow part 2.2 of elastomer are interference fitted between one end far from infusion outlet 1.2, protective cap attachment base 3.2
Inner wall is provided with screw thread and is threadedly coupled between protective cap 4；It is fixedly connected between connector 3 and shell 1,3 center of connector adds
Work has the channel for liquid flowing, and 4 center of protective cap is also provided with the channel for liquid flowing.
When the work of the positive pressure needle-free connector of the utility model, there is the outside of one 6/100 national standard external screw joint defeated
When liquid equipment 7 connects, elastomer solid part and hollow part are squeezed and deform: the diamond shape of elastomer 2 or special-shaped hole 5 first
It can deform, 2 face deformation of elastomer is at a groove, while the V-shape spring return muscle on the outer wall of elastomer 2 can also become
The volume of shape, elastomer becomes smaller, and can generate one inside the shell than being set when removing external infusion without inner cavity bigger before being connected to
When standby, this biggish inner cavity is restored to former volume conditions, while the medical fluid of the big part of former volume out is passed through venous detaining needle
It is input in human body, forms positive pressure.Simultaneously because the infusion outlet 1.1 of external infusion equipment 7 and shell is screw thread tight fit,
After squeezing into connector once, hand unclamps, and the state that connector squeezes elastomer will not change, infusion can normally into
Row.
V-shape spring return muscle 6 is multiple and be dislocatedly distributed above and below in 2 hollow part outer wall of elastomer, all V-shapes
The opening of spring return muscle 6 is towards 2 hollow part of elastomer, 2.2 outer wall center.
Material used in elastomer 2 is memory silica gel.With memory function.
The solid part 2.1 of elastomer 2 and 2.2 junction periphery of hollow part are machined with inclined-plane stifled 2.3, accordingly, shell 1
1.2 bottoms of infusion outlet, which are machined with, blocks up 2.3 annular slopes matched with inclined-plane, and the stifled angle for deviateing infusion direction in inclined-plane is
30-45°.The stifled design in inclined-plane is high pressure resistant in energy, and in a high voltage state, elastomer will not deform, and prevent leakage.
It riveted, be bonded or welded using steel between shell and connector.Hard gel, hard rubber can be used in the use of shell
Glue, hard PVC etc.；Connector uses soft elastic material, such as natural rubber, isoprene, TPU, TPE, PVC, silica gel, even
Fitting can be a variety of characters, under the premise of meeting function, can change.
When not accessing external infusion equipment, the connector of the utility model is in closed state, as shown in Figure 4.When connecing
When entering external infusion equipment, external equipment squeezes the outer end face of solid part, after solid part is pressurized, the deformation of diamond shape hole, and compressing sky
Center portion deformation, external infusion equipment are connected with accommodating cavity.When removing external equipment, due to V-shape spring return muscle, diamond hole
The presence in hole, rebound velocity is fast and smooth, can elastomer is steady and near linear be pushed into the infusion exit of shell, elastomer
Solid part will not be stuck in accommodating cavity.
Claims (8)
1. a kind of security closed positive pressure needle-free connector, including shell, elastomer, connector, protective cap, shell upper/lower terminal point
Infusion import and the infusion outlet cooperated with external infusion equipment are not formed and interior of shell forms accommodating cavity；Elasticity
Body is arranged in the accommodating cavity of shell and elastomer is made of solid part and hollow part, solid part and the shell to infusion of elastomer
Outlet inside wall fits closely to form sealing structure, which is characterized in that the solid part of above-mentioned elastomer processes hole, elastomer
V-shape spring return muscle is machined on hollow part outer wall；Connector includes elastomer stacker, protective cap attachment base, is hit by a bullet
Property body stacker and elastomer hollow part connect far from one end of infusion outlet, protective cap attachment base is connect with protective cap, is connected
It is fixedly connected between part and shell, connector center is machined with the channel for liquid flowing, and protective cap center is also provided with for liquid
The channel of flowing.
2. security closed positive pressure needle-free connector according to claim 1, which is characterized in that above-mentioned hole be diamond shape hole or
Special-shaped hole.
3. security closed positive pressure needle-free connector according to claim 1 or 2, which is characterized in that above-mentioned V-shape spring return
Muscle is multiple and is dislocatedly distributed above and below in elastomer hollow part outer wall that the opening direction of all V-shape spring return muscle is elastic
Body hollow part outer wall center.
4. security closed positive pressure needle-free connector according to claim 3, which is characterized in that infusion outlet and the outside of shell
It is screw thread tight fit between infusion equipment.
5. security closed positive pressure needle-free connector according to claim 4, which is characterized in that material used in above-mentioned elastomer is
Remember silica gel material.
6. security closed positive pressure needle-free connector according to claim 1, which is characterized in that the solid part of elastomer with it is hollow
Portion, periphery, junction is machined with inclined-plane and blocks up, and accordingly, the infusion outlet bottom of shell is machined with and the stifled annular matched in inclined-plane
Inclined-plane, the stifled angle for deviateing infusion direction in inclined-plane is 30-45 °.
7. security closed positive pressure needle-free connector according to claim 1, which is characterized in that elastomer stacker and elastomer
Hollow part is interference fitted between one end far from infusion outlet, and protective cap attachment base inner wall is provided with screw thread and the spiral shell between protective cap
Line connection.
8. security closed positive pressure needle-free connector according to claim 1, which is characterized in that between above-mentioned shell and connector
Using steel riveting, it is bonded or welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721761195.7U CN208770563U (en) | 2017-12-17 | 2017-12-17 | A kind of security closed positive pressure needle-free connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721761195.7U CN208770563U (en) | 2017-12-17 | 2017-12-17 | A kind of security closed positive pressure needle-free connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208770563U true CN208770563U (en) | 2019-04-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721761195.7U Active CN208770563U (en) | 2017-12-17 | 2017-12-17 | A kind of security closed positive pressure needle-free connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208770563U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107802920A (en) * | 2017-12-17 | 2018-03-16 | 湖南平安医械科技有限公司 | A kind of security closed positive pressure needle-free joint |
-
2017
- 2017-12-17 CN CN201721761195.7U patent/CN208770563U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107802920A (en) * | 2017-12-17 | 2018-03-16 | 湖南平安医械科技有限公司 | A kind of security closed positive pressure needle-free joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 415000 No.8 Industrial Avenue, economic development zone, Li County, Changde City, Hunan Province Patentee after: Robust Ping'an medical technology (Hunan) Co.,Ltd. Address before: 415000 No.8 Industrial Avenue, economic development zone, Li County, Changde City, Hunan Province Patentee before: HUNAN PINGAN MEDICAL DEVICES TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |