CN107802920A - A kind of security closed positive pressure needle-free joint - Google Patents
A kind of security closed positive pressure needle-free joint Download PDFInfo
- Publication number
- CN107802920A CN107802920A CN201711358933.8A CN201711358933A CN107802920A CN 107802920 A CN107802920 A CN 107802920A CN 201711358933 A CN201711358933 A CN 201711358933A CN 107802920 A CN107802920 A CN 107802920A
- Authority
- CN
- China
- Prior art keywords
- elastomer
- shell
- positive pressure
- transfusion
- 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.)
- Pending
Links
- 229920001971 elastomer Polymers 0.000 claims abstract description 68
- 239000000806 elastomer Substances 0.000 claims abstract description 67
- 239000007787 solid Substances 0.000 claims abstract description 26
- 230000001681 protective effect Effects 0.000 claims abstract description 21
- 238000001802 infusion Methods 0.000 claims abstract description 15
- 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
- 239000007788 liquid Substances 0.000 claims description 10
- 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
- 239000012530 fluid Substances 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
- 238000012545 processing Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000003466 welding Methods 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
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression 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
- 238000005516 engineering process Methods 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
- 238000011084 recovery Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
Landscapes
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a kind of security closed positive pressure needle-free joint, including shell, elastomer, connector, protective cap, shell upper/lower terminal forms transfusion import and the transfusion outlet coordinated with external infusion equipment respectively and enclosure forms accommodating cavity；Elastomer is arranged in the accommodating cavity of shell and elastomer is made up of solid part and hollow part, the solid part of elastomer is brought into close contact to form sealing structure with shell to transfusion outlet inside wall, the solid part of elastomer processes hole, and V-shape spring return muscle is machined with the hollow part outer wall of elastomer.The present invention will not produce clogging, and in elastomer resilience, can steadily, straight line resilience, elastomer will not be stuck in accommodating cavity, and the resilience effect of elastomer has been effectively ensured.
Description
Technical field
The present invention relates to a kind of security closed positive pressure needle-free joint of transfusion, belong to medical instruments field.
Background technology
During infusion, joint 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 joint being commonly used is positive pressure needle-free joint.Positive pressure needle-free joint is one
Kind can form a positive pressure on pipeline, push liquid to human body by pipeline automatically automatically when pulling up infusion joint, from
And blood is avoided to cause plugging phenomenon to the backflow of needle tubing.
In the prior art, positive pressure needle-free joint generally comprises shell, plug, base etc., wherein plug as valve element to whole
The seal of individual joint is most important.But because plug material is softer, mechanical strength is relatively low, elastic recovery speed is slow, returned in plug
During multiple, situations such as easily causing bacterial invasion, occurs, and plug compressive deformation track is not fixed, and easily produces the phenomenon of leakage.
CN2015102128682 discloses a kind of malleation connector, and it includes needleless joint and plug, and needleless joint includes
Access interface, output port and one have the cavity of inner chamber, and interior intracavitary is provided with an internal core print seat, and plug includes a solid part and hollow
Portion, the side wall of solid part are provided with least one groove, and the outer wall of hollow part is used to increase hollow part elasticity time provided with least one
Multiple rib, plug are arranged in the inner chamber 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 provided with least one rib by the outer wall in hollow part, realize hollow part and
When resilience, and the reasonable Arrangement of rib, the deformation direction of plug can be limited.But because the groove of solid part is provided with side wall
, when accessing fluid delivery apparatus, under the squeezing action of fluid delivery apparatus, each position distortions of plug are inconsistent, cause plug to set
Fluted side compression deformation is big, and does not set groove side compressed shape and diminish, and causes plug solid part obliquely to enter interior intracavitary, gently
Person, the circular gap size between plug surface and access interface inwall is uneven, influences transfusion liquid flow velocity, severe one causes part
Block, and while when rebounding, the risk being stuck in inner chamber still be present.
The content of the invention
For above-mentioned the shortcomings of the prior art, connect it is an object of the invention to provide one kind in the existing positive pressure needle-free of reservation
Better tightness and safer security closed positive pressure needle-free joint on the basis of camera function.
To achieve the above object, the technical solution adopted by the present invention is：A kind of security closed positive pressure needle-free joint, including it is outer
Shell, elastomer, connector, protective cap, shell upper/lower terminal form transfusion import and matched somebody with somebody with external infusion equipment respectively
The transfusion outlet of conjunction and enclosure forms accommodating cavity；Elastomer is arranged in the accommodating cavity of shell and elastomer is by solid part
Formed with hollow part, the solid part of elastomer is brought into close contact to form sealing structure with shell to transfusion outlet inside wall, and its feature exists
In the solid part of above-mentioned elastomer processes hole, and V-shape spring return muscle is machined with the hollow part outer wall of elastomer；Even
Fitting includes elastomer stacker, protective cap connecting seat, and its elastomer stacker exports with elastomer hollow part away from transfusion
One end connection, protective cap connecting seat is connected with protective cap, is fixedly connected between connector and shell, and connector center is machined with
The passage flowed for liquid, protective cap center are also provided with the passage flowed for liquid.
Preferably, above-mentioned hole is rhombus hole or special-shaped hole.
Preferably, above-mentioned V-shape spring return muscle is multiple and be dislocatedly distributed elastomer hollow part outer wall is upper and lower, institute
The opening of some V-shape spring return muscle is towards elastomer hollow part outer wall center.
Preferably, it is screw thread tight fit between the transfusion outlet of shell and external infusion equipment.
Preferably, material used in above-mentioned elastomer is memory silica gel material.
Preferably, the solid part of elastomer is machined with inclined-plane with hollow part junction periphery and blocked up, accordingly, the transfusion of shell
Outlet bottom is machined with blocks up the annular slope being engaged with inclined-plane, and the stifled angle for deviateing transfusion direction in inclined-plane is 30-45 °.
Preferably, it is interference fitted, protects between the one end of elastomer stacker and elastomer hollow part away from transfusion outlet
Cap connecting seat inwall is provided with screw thread and is threadedly coupled between protective cap.
Preferably, using steel riveting, Nian Jie or welding between above-mentioned shell and connector.
Compared with prior art, the beneficial effect that possesses of the present invention is：
1st, by processing rhombus hole or special-shaped hole in elastomer solid part, when accessing external infusion equipment, elastomer is real
Center portion periphery is deformed by uniform extruding force, and solid part outer end plane deformation is into concave surface, and transfusion liquid is from solid part periphery
Gap between accommodating cavity in shell reserves, and will not produce clogging, and in elastomer resilience, can steadily, directly
Line resilience, elastomer will not be stuck in accommodating cavity；
2nd, V-shape spring return muscle, can be in elastomer resilience, from the centre of elastomer to both sides because of rational distribution design
Resilience, the resilience effect of elastomer is effectively ensured；
3rd, connector, protective cap etc. are set, can be effective dust, fungi-proofing on the basis of ease of assembly, improve the peace of transfusion
Quan Xing, avoid the dispute that causes a hidden trouble；
4th, it is as caused by elastomer stereomutation that needleless joint, which produces malleation,.
Brief description of the drawings
Fig. 1 is structural perspective of the present invention
Fig. 2 is structure sectional view of the present invention
Fig. 3 is that the present invention removes the structural perspective after shell
Fig. 4 is the structural representation after elastomer of the present invention is extruded by external infusion equipment
Wherein, 1, shell, 1.1, transfusion outlet, 1.2, accommodating cavity, 2, elastomer, 2.1, solid part, 2.2, hollow part, 2.3,
Inclined-plane blocks up, and 3, connector, 3.1, elastomer stacker, 3.2, protective cap connecting seat, 4, protective cap, 5, rhombus or special-shaped hole,
6th, V-shape spring return muscle, 7, external infusion equipment.
Embodiment
Presently in connection with accompanying drawing, the invention will be further described.Obviously, it is impossible to therefore limit the present invention to described reality
Apply among a scope.Based on the embodiment in the present invention, those of ordinary skill in the art are not before creative work is made
The every other embodiment obtained is put, protection scope of the present invention all should be belonged to.It should be noted that work as building block quilt
Another part referred to as " is fixed on ", it can be directly on another part or there may also be part placed in the middle.When one
Part is considered as " connection " another part, and it can be directly to another part or the residence that may be simultaneously present
Middle part.Under term used in this specification " go up ", " ", " left side ", " right side ", "front", "rear" and similar expression be simply
The purpose of explanation, unreceipted model, size, condition in following embodiments, conventionally, or select according to catalogue
Select.
As Figure 1-4, security closed positive pressure needle-free joint of the invention, including shell 1, elastomer 2, connector 3, guarantor
Helmet 4,1 left and right both ends of shell form transfusion import and gone out with the transfusion of the screw thread tight fit of external infusion equipment 7 respectively
Accommodating cavity 1.2 is formed inside mouth 1.1 and shell 1；Elastomer 2 is arranged in the accommodating cavity 1.3 of shell 1 and elastomer 2 is by reality
Center portion 2.1 and hollow part 2.2 are formed, and the solid part 2.1 of elastomer 2 exports 1.2 inwalls with the transfusion of shell 1 and is brought into close contact to be formed
Sealing structure, the solid part 2.1 of elastomer 2 are machined with rhombus or special-shaped hole 5, processed on the outer wall of hollow part 2.2 of elastomer 2
There is V-shape spring return muscle 6；Connector 3 includes elastomer stacker 3.1, protective cap connecting seat 3.2, and its elastomer is accepted
Seat 3.1 and the hollow part 2.2 of elastomer 2 are interference fitted between one end away from transfusion outlet 1.2, the inwall of protective cap connecting seat 3.2
It is provided with screw thread and is threadedly coupled between protective cap 4；It is fixedly connected between connector 3 and shell 1, the center of connector 3 is machined with
The passage flowed for liquid, the center of protective cap 4 are also provided with the passage flowed for liquid.
When the positive pressure needle-free joint work of the present invention, the external infusion for having the national standard external screw joint of one 6/100 is set
During standby 7 connection, elastomer solid part and hollow part are squeezed and deformed：The rhombus of elastomer 2 or special-shaped hole 5 first can become
Shape, the face deformation of elastomer 2 is into a groove, while the V-shape spring return muscle on the outer wall of elastomer 2 can also deform, bullet
Property body volume diminish, a ratio can be produced in shell without bigger inner chamber before connection, when removing external infusion equipment,
This larger inner chamber returns to former volume conditions, while the decoction for going out former volume part greatly is input to by venous detaining needle
In human body, malleation is formed.Simultaneously because the transfusion outlet 1.1 of external infusion equipment 7 and shell is screw thread tight fit, once
After squeezing into connector, hand is unclamped, and the state of connector extruding elastomer will not be changed, and transfusion can be normally carried out.
V-shape spring return muscle 6 is multiple and be dislocatedly distributed the hollow part outer wall of elastomer 2 is upper and lower, all V-shapes
The opening of spring return muscle 6 is towards the outer wall center of 2 hollow part of elastomer 2.2.
Material used in elastomer 2 is memory silica gel.With memory function.
The solid part 2.1 of elastomer 2 is machined with inclined-plane stifled 2.3, accordingly, shell 1 with the junction periphery of hollow part 2.2
1.2 bottoms of transfusion outlet are machined with blocks up 2.3 annular slopes being engaged with inclined-plane, and the angle in the stifled deviation transfusion 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.
Using steel riveting, Nian Jie or welding between shell and connector.The use of shell can use hard gel, hard rubber
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, on the premise of function is met, can change.
When not accessing external infusion equipment, joint of the invention is in closed state, as shown in Figure 4.When access is outer
During portion's fluid delivery apparatus, external equipment extrudes the outer face of solid part, after solid part is pressurized, the deformation of rhombus hole, oppresses hollow part
Deformation, external infusion equipment turn on accommodating cavity.When removing external equipment, due to V-shape spring return muscle, rhombus hole
In the presence of, rebound velocity is fast and smooth, can elastomer is steady and near linear be pushed into the transfusion exit of shell, the reality of elastomer
Center portion will not be stuck in accommodating cavity.
Claims (8)
1. a kind of security closed positive pressure needle-free joint, including shell, elastomer, connector, protective cap, shell upper/lower terminal point
Transfusion import and the transfusion outlet coordinated with external infusion equipment are not formed and enclosure forms accommodating cavity；Elasticity
Body is arranged in the accommodating cavity of shell and elastomer is made up of solid part and hollow part, solid part and the shell to transfusion of elastomer
Outlet inside wall is brought into close contact to form sealing structure, it is characterised in that the solid part processing hole of above-mentioned elastomer, elastomer
V-shape spring return muscle is machined with hollow part outer wall；Connector includes elastomer stacker, protective cap connecting seat, and it is hit by a bullet
Property the one end of body stacker and elastomer hollow part away from transfusion outlet be connected, protective cap connecting seat is connected with protective cap, is connected
It is fixedly connected between part and shell, connector center is machined with the passage flowed for liquid, and protective cap center is also provided with for liquid
The passage of flowing.
2. security closed positive pressure needle-free joint according to claim 1, it is characterised in that above-mentioned hole be rhombus hole or
Special-shaped hole.
3. security closed positive pressure needle-free joint according to claim 1 or 2, it is characterised in that above-mentioned V-shape spring return
Muscle is multiple and be dislocatedly distributed elastomer hollow part outer wall is upper and lower, and the openings of all V-shape spring return muscle is towards elasticity
Body hollow part outer wall center.
4. security closed positive pressure needle-free joint according to claim 3, it is characterised in that transfusion outlet and the outside of shell
It is screw thread tight fit between fluid delivery apparatus.
5. security closed positive pressure needle-free joint according to claim 4, it is characterised in that material used in above-mentioned elastomer is
Remember silica gel material.
6. security closed positive pressure needle-free joint according to claim 1, it is characterised in that the solid part of elastomer with it is hollow
Portion junction periphery is machined with inclined-plane and blocked up, and accordingly, the transfusion outlet bottom of shell is machined with and the stifled annular being engaged in inclined-plane
Inclined-plane, the stifled angle for deviateing transfusion direction in inclined-plane is 30-45 °.
7. security closed positive pressure needle-free joint according to claim 1, it is characterised in that elastomer stacker and elastomer
Hollow part is interference fitted between one end away from transfusion outlet, and protective cap connecting seat inwall is provided with screw thread and the spiral shell between protective cap
Line connects.
8. security closed positive pressure needle-free joint according to claim 1, it is characterised in that between above-mentioned shell and connector
Riveted, be bonded or welded using steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711358933.8A CN107802920A (en) | 2017-12-17 | 2017-12-17 | A kind of security closed positive pressure needle-free joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711358933.8A CN107802920A (en) | 2017-12-17 | 2017-12-17 | A kind of security closed positive pressure needle-free joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107802920A true CN107802920A (en) | 2018-03-16 |
Family
ID=61580012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711358933.8A Pending CN107802920A (en) | 2017-12-17 | 2017-12-17 | A kind of security closed positive pressure needle-free joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107802920A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108619591A (en) * | 2018-05-31 | 2018-10-09 | 郑州迪奥医学技术有限公司 | Zero-pressure connector |
| CN110732080A (en) * | 2019-09-27 | 2020-01-31 | 锐嘉（宜兴）科技有限公司 | rubber cap without pin joint |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103212154A (en) * | 2012-01-21 | 2013-07-24 | 美昕医疗器械（上海）有限公司 | One-way positive valve |
| CN104815363A (en) * | 2015-04-30 | 2015-08-05 | 苏州林华医疗器械有限公司 | Positive pressure connector |
| CN105007978A (en) * | 2013-03-13 | 2015-10-28 | 康尔福盛303公司 | Collapsible valve with internal dimples |
| CN105073182A (en) * | 2013-03-13 | 2015-11-18 | 康尔福盛303公司 | Zero reflux female valve with small priming volume |
| EP3011994A1 (en) * | 2015-08-10 | 2016-04-27 | Cair L. G. L. | Female luer connector |
| CN208770563U (en) * | 2017-12-17 | 2019-04-23 | 湖南平安医械科技有限公司 | A kind of security closed positive pressure needle-free connector |
-
2017
- 2017-12-17 CN CN201711358933.8A patent/CN107802920A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103212154A (en) * | 2012-01-21 | 2013-07-24 | 美昕医疗器械（上海）有限公司 | One-way positive valve |
| CN105007978A (en) * | 2013-03-13 | 2015-10-28 | 康尔福盛303公司 | Collapsible valve with internal dimples |
| CN105073182A (en) * | 2013-03-13 | 2015-11-18 | 康尔福盛303公司 | Zero reflux female valve with small priming volume |
| CN104815363A (en) * | 2015-04-30 | 2015-08-05 | 苏州林华医疗器械有限公司 | Positive pressure connector |
| EP3011994A1 (en) * | 2015-08-10 | 2016-04-27 | Cair L. G. L. | Female luer connector |
| CN208770563U (en) * | 2017-12-17 | 2019-04-23 | 湖南平安医械科技有限公司 | A kind of security closed positive pressure needle-free connector |
Non-Patent Citations (1)
| Title |
|---|
| 胡必杰 等, 上海科学技术出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108619591A (en) * | 2018-05-31 | 2018-10-09 | 郑州迪奥医学技术有限公司 | Zero-pressure connector |
| CN108619591B (en) * | 2018-05-31 | 2024-02-09 | 郑州迪奥医学技术有限公司 | Zero pressure Joint |
| CN110732080A (en) * | 2019-09-27 | 2020-01-31 | 锐嘉（宜兴）科技有限公司 | rubber cap without pin joint |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180316 |