CN104815363B - A kind of positive pressure connector - Google Patents
A kind of positive pressure connector Download PDFInfo
- Publication number
- CN104815363B CN104815363B CN201510212868.2A CN201510212868A CN104815363B CN 104815363 B CN104815363 B CN 104815363B CN 201510212868 A CN201510212868 A CN 201510212868A CN 104815363 B CN104815363 B CN 104815363B
- Authority
- CN
- China
- Prior art keywords
- positive pressure
- rubber plug
- hollow part
- pressure connector
- rib
- 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.)
- Active
Links
- 229920001971 elastomer Polymers 0.000 claims abstract description 38
- 239000007787 solid Substances 0.000 claims abstract description 26
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 238000011084 recovery Methods 0.000 claims abstract description 11
- 238000010586 diagram Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000004816 latex Substances 0.000 description 2
- 229920000126 latex Polymers 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000008952 bacterial invasion Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 210000003462 vein Anatomy 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
-
- 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
- A61M2005/1401—Functional features
-
- 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
- A61M2005/1587—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body suitable for being connected to an infusion line after insertion into a patient
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
Present invention is disclosed a kind of positive pressure connector, including needleless joint and rubber plug, needleless joint includes that access interface, output port and a cavity with inner cavity, interior intracavitary are equipped with an internal core print seat；Rubber plug includes a solid part and hollow part, and the side wall of solid part is equipped at least one groove, and the outer wall of hollow part is equipped at least one rib for increasing hollow part elastic recovery；Rubber plug is set in the inner cavity of needleless joint, and the access interface of solid part and needleless joint forms sealing structure, and hollow part is secured to internal core print seat.Using the positive pressure connector of the present invention, the outer wall of hollow part is equipped at least one rib for increasing hollow part elastic recovery.With stronger screen resilience, ensures positive pressure amount, rubber plug is made to have enough mechanical strengths；Using mirror image setting or the rib of symmetrically arranged two flat types, there is stronger screen resilience, rib can limit the deformation direction of rubber plug, rubber plug is prevented to be locked to interior intracavitary.
Description
Technical field
Reliable, closure precision that the present invention relates to a kind of positive pressure connectors more particularly to a kind of grafting, deformation recovery are suitable rapidly
Positive pressure connector smooth and that there is reply guide rail.
Background technology
When needing to be infused during infusion prolonged and repeatedly, it is quiet that human body generally will be entered by connector
Venous detaining needle or inlying catheter in arteries and veins are interconnected with liquid medicine injecting device, to realize the operations such as dosing.
The connector of conventional belt latex septum has limitation, needs to realize dosing by needle thorn, due to latex septum quilt
After syringe needle pierces through, the pollutant and rubber scraps of syringe needle can enter liquid, and enter human body with liquid, to the health to patient
Cause great security risk.
In the prior art, there are many different positive pressure connectors using rubber plug as inner core, and rubber plug the material is soft,
Mechanical strength is relatively low, elastic recovery speed is slow, and in rubber plug Recovery Process, situations such as easily causing bacterial invasion occurs, and rubber plug
Compressive deformation track is not fixed, and is susceptible to situations such as rubber plug is locked on interior intracavitary, positive pressure connector is caused to damage.Also have
There is improved rubber plug, using the rubber plug of undaform, the plug and mould of undaform makes complexity, needs strictly to control production technology ginseng
The elastic force and positive pressure amount that number and material mixture ratio could have been realized, the requirement to material and production technology is all higher, and production cost is high
It is high.
Invention content
It is an object of the invention to solve above-mentioned technical problem, a kind of positive pressure connector is proposed.
The purpose of the present invention will be achieved by the following technical programs：
A kind of positive pressure connector, including needleless joint and rubber plug, particularly,
The needleless joint includes a cavity with inner cavity and access interface, output port positioned at cavity both ends, institute
The cavity wall for stating output port side cavity extends to inner cavity and the internal core print seat for carrying rubber plug equipped with one；
The rubber plug includes a solid part and a hollow part, and the side wall of the solid part is equipped at least one groove；
The rubber plug is set in the inner cavity of needleless joint, and the access interface of the solid part and needleless joint is formed
Sealing structure, the hollow part are secured to the internal core print seat away from one end of solid part,
The internal core print seat has the venthole of a connection outside atmosphere and hollow part internal cavity；
The outer wall of the hollow part is equipped at least one rib for increasing hollow part elastic recovery.
Preferably, the outer wall of the hollow part is equipped with mirror image setting or symmetrically arranged two ribs.
Preferably, the rib is the S-type guiding rib being vertically disposed
Preferably, the upper surface of the solid part of the rubber plug is in concave arc shape.
Preferably, the connecting pin of the solid part and hollow part has a tapered portion, and the bottom of the access interface is equipped with
The annular slope to match with the tapered portion, the tapered portion form sealing structure with the annular slope.
Preferably, sealing ring is equipped between the annular slope and tapered portion, the sealing ring is set on annular slope
Or in tapered portion.
Preferably, the internal core print seat is to be bonded or welded with the hollow part.
Preferably, the access interface of the needleless joint is equipped with external screw thread.
Preferably, the needleless joint is equipped with branch connector.
Preferably, the branch connector is equipped with branch pipe external screw thread, and the branch connector is additionally provided with end cap.
The beneficial effects are mainly as follows：
1. the outer wall of hollow part is equipped at least one rib for increasing hollow part elastic recovery.With stronger rebound
Power ensures positive pressure amount, rubber plug is made to have enough mechanical strengths；
2. using mirror image setting or the rib of symmetrically arranged two flat types, there is stronger screen resilience, rib can limit
The deformation direction of glue plug, prevents rubber plug to be locked to interior intracavitary；
3. the upper surface of rubber plug is in concave arc shape, the obturation effect of positive pressure connector is increased, bacterium is preferably hindered；
4. tapered portion forms sealing structure with annular slope, secondary seal is formed, obturation effect is more preferable；
5. being equipped with sealing ring between annular slope and tapered portion, the sealing between tapered portion and circular slanting is further increased
Performance.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of positive pressure connector of the present invention；
Fig. 2 is the structural schematic diagram that a kind of positive pressure connector of the present invention is in closed state；
Fig. 3 is the structural schematic diagram that a kind of positive pressure connector of the present invention is inserted into external equipment；
Fig. 4 is the structural schematic diagram of rib preferred embodiment of the present invention；
Fig. 5 is the structural schematic diagram for being interrupted rib；
Fig. 6 is the structural schematic diagram that rib is arranged horizontal by 70 ° of angles；
Fig. 7 is the structural schematic diagram that rib is arranged horizontal by 85 ° of angles；
Fig. 8 is the structural schematic diagram that rib is arranged horizontal by 30 ° of angles；
Fig. 9 is the structural schematic diagram of X-type combination rib；
Figure 10 is the structural schematic diagram of another combination rib.
Specific implementation mode
The present invention provides a kind of positive pressure connector, have that simple in structure, manufacturing cost is cheap, grafting is reliable, is closed essence
It is close, have the characteristics that enough mechanical strengths and elastic recovery is smooth.
As shown in Figure 1 to Figure 3, a kind of positive pressure connector, including needleless joint 1 and rubber plug 2, rubber plug preferably use silica gel glue
Plug, wherein needleless joint 1 includes a cavity 11 with inner cavity 3 and access interface 12, output port positioned at 11 both ends of cavity
13,12 attaching external input device of access interface, output port 13 is connected to transfusion catheter, the chamber of 13 side cavity 11 of output port
Wall is equipped with one and extends to inner cavity 3 and the internal core print seat 4 for carrying rubber plug 2；Rubber plug 2 includes that a solid solid part 21 and one is hollow
Hollow part 22, the side wall of solid part 21 is equipped at least one groove 5；Rubber plug 2 is set in the inner cavity 3 of needleless joint 1, and
The access interface 12 of solid part 21 and needleless joint 1 forms sealing structure, and hollow part 22 is secured to away from one end of solid part 21
There is the venthole of a connection outside atmosphere and hollow part internal cavity, venthole to belong to the prior art for internal core print seat 4, internal core print seat 4,
This is repeated no more；Internal core print seat 4 is to be bonded or welded with hollow part 22, is connected with the sealing of hollow part 22 convenient for internal core print seat 4, certain energy
Ensure the screw thread of its leakproofness and snap connection also to be possible.Particularly, the outer wall of hollow part 22 is equipped at least one be used for
Increase the rib 6 of hollow part elastic recovery.The rib has certain mechanical strength, and curvature is big when bending, and elastic-restoring force is strong.
In the preferred embodiment of this case, as shown in figure 4, the outer wall of hollow part 22 is equipped with mirror image setting or symmetrically arranged two
The rib 6 of a flat type, mirror image and be symmetrical arranged, make rib elastic recovery dynamic balance, and increase the intensity of elastic-restoring force.
This case can also advanced optimize, and rib 6 is the S-type guiding rib being vertically disposed, and being oriented to rib can limit
The deformation direction of rubber plug, prevents rubber plug to be locked to interior intracavitary.
The quantity of certain rib is not restricted, and setting direction and shape can advanced optimize, the change of shape for example in
Corrugated rib, the rib being arc-shaped, the rib of bent and intermittent rib as shown in Figure 5, setting direction change
Variants are as shown in Figure 6 to 8, and rib is in that 70 °, 85 ° and 30 ° angles are arranged respectively with horizontal plane, and further, this case can also adopt
Rib is combined with the X-type as shown in Figure 9 being made of two ribs, other can reach the similar to Figure 10 of this case technique effect
Combination rib also within the protection domain of this case.
To increase the sealing performance and resistance bacterium performance of this programme, following design is used, first, the solid part 21 of rubber plug 2
Upper surface be in concave arc shape, the structure of concave arc shape is convenient for the sealing between solid part and access interface.Second, solid part 21 and sky
There is a tapered portion 7, the bottom of access interface 12 to be equipped with the annular slope 8 to match with tapered portion 7 for the connecting pin of center portion 22, cone
Shape portion 7 forms sealing structure with annular slope 8.Third, being equipped with sealing ring 9 between annular slope 8 and tapered portion 7, sealing ring 9 is set
It is placed on annular slope 8 or in tapered portion 7.
This programme can also advanced optimize, such as the access interface 12 of needleless joint 1 is equipped with external screw thread.For another example needleless
The side wall setting branch connector 10 of connector 1, the branch connector 10 added is equipped with branch pipe external screw thread, and branch connector 10 is additionally provided with end cap.
It is the operation principle of positive pressure connector of the present invention below：
When original state, as shown in Fig. 2, positive pressure connector is in closed state；When positive pressure connector accesses external equipment
When, external equipment is no-needle transfusion equipment or needleless injection device, and external equipment oppresses the upper surface of solid part, and solid part is pressurized
Rearward recess deforms, while solid part compressing hollow part is deformed, external equipment and the unimpeded connection in inner cavity, at this time positive pressure connector
State shown in Fig. 3 is formed, after external equipment leaves, the variation such as Fig. 3 to Fig. 2 occurs for positive pressure connector, therebetween, due to being oriented to
Rib bending curvature is big, has stronger mechanical strength, so that the elastic-restoring force of rubber plug is increased so being oriented to rib, replys speed
It is fast and smooth, prevent the case where rubber plug engages in the lumen and occurs, the situation that can easily prevent rubber plug aging from causing restoring force inadequate
Occur, indirectly increases the service life of positive pressure connector.
Still there are many embodiment, all technical sides formed using equivalents or equivalent transformation by the present invention
Case is within the scope of the present invention.
Claims (9)
1. a kind of positive pressure connector, including needleless joint and rubber plug, it is characterised in that：The needleless joint includes one with inner cavity
Cavity and access interface, output port positioned at cavity both ends, the cavity wall of output port side cavity be equipped with one and extend
Internal core print seat to inner cavity and for carrying rubber plug；The rubber plug includes a solid part and a hollow part, the side wall of the solid part
Equipped at least one groove；The rubber plug is set in the inner cavity of needleless joint, and the solid part and needleless joint connect
Inbound port forms sealing structure, and the hollow part is secured to the internal core print seat away from one end of solid part, and the internal core print seat has
The venthole of one connection outside atmosphere and hollow part internal cavity；The outer wall of the hollow part is equipped at least one hollow for increasing
The rib of portion's elastic recovery；The rib is the S-type guiding rib being vertically disposed.
2. a kind of positive pressure connector according to claim 1, it is characterised in that：The outer wall of the hollow part is equipped with and symmetrically sets
Two ribs set.
3. a kind of positive pressure connector according to claim 1, it is characterised in that：The upper surface of the solid part of the rubber plug is in
Concave arc shape.
4. a kind of positive pressure connector according to claim 1, it is characterised in that：The connecting pin of the solid part and hollow part
With a tapered portion, the bottom of the access interface is equipped with the annular slope to match with the tapered portion, the tapered portion with
The annular slope forms sealing structure.
5. a kind of positive pressure connector according to claim 4, it is characterised in that：It is set between the annular slope and tapered portion
There are sealing ring, the sealing ring to be set on annular slope or in tapered portion.
6. a kind of positive pressure connector according to claim 1, it is characterised in that：The internal core print seat and the hollow part are viscous
It connects or welds.
7. a kind of positive pressure connector according to claim 1, it is characterised in that：The access interface of the needleless joint is equipped with
External screw thread.
8. a kind of positive pressure connector according to claim 1, it is characterised in that：The needleless joint is equipped with branch connector.
9. a kind of positive pressure connector according to claim 8, it is characterised in that：The branch connector is equipped with branch pipe external screw thread, institute
It states branch connector and is additionally provided with end cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510212868.2A CN104815363B (en) | 2015-04-30 | 2015-04-30 | A kind of positive pressure connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510212868.2A CN104815363B (en) | 2015-04-30 | 2015-04-30 | A kind of positive pressure connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104815363A CN104815363A (en) | 2015-08-05 |
| CN104815363B true CN104815363B (en) | 2018-11-02 |
Family
ID=53725995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510212868.2A Active CN104815363B (en) | 2015-04-30 | 2015-04-30 | A kind of positive pressure connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104815363B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6878613B2 (en) * | 2017-10-30 | 2021-05-26 | 株式会社Ｑｐｓ研究所 | Reflectors, deployable antennas, and spacecraft |
| 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 |
| CN108236759B (en) * | 2018-01-17 | 2024-06-21 | 威海洁瑞医用制品有限公司 | Medical transfusion forward flow joint device |
| CN108030976B (en) * | 2018-01-17 | 2024-07-23 | 威海洁瑞医用制品有限公司 | Positive pressure three-way infusion connecting device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1658923A (en) * | 2002-05-08 | 2005-08-24 | 阿拉里医疗设备有限公司 | Needle-free medical connector with expandable valve arrangement and method of fluid flow control |
| CN102686265A (en) * | 2009-11-16 | 2012-09-19 | 康尔福盛303公司 | Needleless access connectors and valve elements therefor |
| CN103071200A (en) * | 2013-01-29 | 2013-05-01 | 苏州林华医疗器械有限公司 | Positive-pressure needle-free connecting piece |
| CN204121509U (en) * | 2014-08-25 | 2015-01-28 | 苏州林华医疗器械有限公司 | A kind of positive pressure needle-free connector |
| CN204655652U (en) * | 2015-04-30 | 2015-09-23 | 苏州林华医疗器械有限公司 | A kind of malleation connector |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1639286B1 (en) * | 2003-06-17 | 2014-12-03 | Filtertek Inc. | Fluid handling device |
-
2015
- 2015-04-30 CN CN201510212868.2A patent/CN104815363B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1658923A (en) * | 2002-05-08 | 2005-08-24 | 阿拉里医疗设备有限公司 | Needle-free medical connector with expandable valve arrangement and method of fluid flow control |
| CN102686265A (en) * | 2009-11-16 | 2012-09-19 | 康尔福盛303公司 | Needleless access connectors and valve elements therefor |
| CN103071200A (en) * | 2013-01-29 | 2013-05-01 | 苏州林华医疗器械有限公司 | Positive-pressure needle-free connecting piece |
| CN204121509U (en) * | 2014-08-25 | 2015-01-28 | 苏州林华医疗器械有限公司 | A kind of positive pressure needle-free connector |
| CN204655652U (en) * | 2015-04-30 | 2015-09-23 | 苏州林华医疗器械有限公司 | A kind of malleation connector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104815363A (en) | 2015-08-05 |
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| C06 | Publication | ||
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| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 215101 No. 3, new road, Suzhou Industrial Park, Jiangsu, China Applicant after: SUZHOU LINHUA MEDICAL INSTRUMENT CO., LTD. Address before: 215101 No. 3, new road, Suzhou Industrial Park, Jiangsu, China Applicant before: Linhua Medical Appliances Co., Ltd., Suzhou |
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