CN104815364B - A kind of needleless connector - Google Patents
A kind of needleless connector Download PDFInfo
- Publication number
- CN104815364B CN104815364B CN201510213159.6A CN201510213159A CN104815364B CN 104815364 B CN104815364 B CN 104815364B CN 201510213159 A CN201510213159 A CN 201510213159A CN 104815364 B CN104815364 B CN 104815364B
- Authority
- CN
- China
- Prior art keywords
- needleless
- rubber plug
- hollow part
- rib
- cavity
- 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
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
Abstract
Present invention is disclosed a kind of needleless connector, including needleless joint and rubber plug, needleless joint includes access interface, output port and a cavity with inner cavity, interior intracavitary and is 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 with least one groove, has at least one rib for being used to increase hollow part elastic recovery in hollow part；Rubber plug is arranged 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 needleless connector of the present invention, the inner wall of hollow part is equipped with least one rib for being used to increase hollow part elastic recovery.With stronger screen resilience, ensure positive pressure amount, rubber plug is possessed enough mechanical strengths；Using with S-type guiding rib, there is stronger screen resilience, the deformation direction of rubber plug can be limited by being oriented to rib, prevent rubber plug to be locked to interior intracavitary.
Description
Technical field
The present invention relates to a kind of needleless connector, more particularly to a kind of grafting is reliable, closure is accurate, deformation recovery is suitable rapidly
Needleless connector smooth and that there is reply guide rail.
Background technology
When needing prolonged and repeated infused during infusion, 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, are operated so as to fulfill dosing etc..
The connector of conventional belt latex septum has limitation, it is necessary to could realize dosing by acupuncture, due to latex septum quilt
After needle pierces, the pollutant and rubber scraps of syringe needle can enter liquid, and enter human body with liquid, so that the health to patient
Cause great security risk.
In the prior art, have it is many different using needleless connector of the rubber plug as inner core, and rubber plug material it is softer,
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 situations such as rubber plug is locked on interior intracavitary, causes needleless connector to damage easily occurs.Also have
There is improved rubber plug, using the rubber plug of undaform, the plug and mould of undaform makes complicated, it is necessary to strictly 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.
The content of the invention
It is an object of the invention to solve above-mentioned technical problem, a kind of needleless connector is proposed.
The purpose of the present invention, will be achieved by the following technical programs：
A kind of needleless connector, including needleless joint and rubber plug, it is characterised in that：
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 equipped with one and is used for the internal core print seat for carrying rubber plug；
The rubber plug includes a solid part and a hollow part, and the side wall of the solid part is equipped with least one groove；
The rubber plug is arranged 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 the hollow part internal cavity；
With at least one rib for being used to increase hollow part elastic recovery in the hollow part.
Preferably, the rib is arranged at the inner wall of the hollow part.
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 arranged on annular slope
Or in tapered portion.
Preferably, the internal core print seat is Nian Jie or welding 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 inner wall of hollow part is equipped with least one rib for being used to increase hollow part elastic recovery.With stronger rebound
Power, ensures positive pressure amount, rubber plug is possessed enough mechanical strengths；
2. using having S-type guiding rib, there is stronger screen resilience, the deformation side of rubber plug can be limited by being oriented to rib
To preventing rubber plug to be locked to interior intracavitary；
3. the upper surface of rubber plug is in concave arc shape, the obturation effect of needleless connector is added, preferably hinders bacterium；
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.
Brief description of the drawings
Fig. 1 is a kind of structure diagram of needleless connector of the present invention；
Fig. 2 is the structure diagram that a kind of needleless connector of the present invention is in closed state；
Fig. 3 is a kind of structure diagram of needleless connector insertion external equipment of the present invention；
Fig. 4 is that rib is in mirror image or symmetrically arranged structure diagram；
Fig. 5 is the structure diagram for being interrupted rib；
Fig. 6 is the structure diagram that rib is set horizontal by 70 ° of angles；
Fig. 7 is the structure diagram that rib is set horizontal by 85 ° of angles；
Fig. 8 is the structure diagram that rib is set horizontal by 30 ° of angles；
Fig. 9 is the structure diagram of X-type combination rib；
Figure 10 is the structure diagram of another combination rib.
Embodiment
The present invention provides a kind of needleless connector, have that simple in structure, manufacture is of low cost, grafting is reliable, closure essence
It is close, there is enough mechanical strengths and elastic recovery is smooth.
As shown in Figure 1 to Figure 3, a kind of needleless 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, the output port positioned at 11 both ends of cavity
13,12 attaching external input device of access interface, output port 13 connects 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；It is hollow that rubber plug 2 includes a solid solid part 21 and one
Hollow part 22, the side wall of solid part 21 is equipped with least one groove 5；Rubber plug 2 is arranged 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
Internal core print seat 4, internal core print seat 4 have the venthole of a connection outside atmosphere and hollow part internal cavity, and venthole belongs to the prior art,
This is repeated no more；Internal core print seat 4 is Nian Jie or welding with hollow part 22, is connected easy to internal core print seat 4 with the sealing of hollow part 22, certain energy
Ensure the screw thread of its leakproofness and snap connection also to be possible.Especially, have in hollow part 22 at least one for increasing
The rib 6 of hollow part elastic recovery.The rib has certain mechanical strength, and curvature is big during bending, and elastic-restoring force is strong.
The rib of this case is arranged at the inner wall of hollow part 22 or suspends in the inner, and the preferred structure of rib is to be vertically disposed
S-type guiding rib, the deformation direction of rubber plug can be limited by being oriented to rib, prevent rubber plug to be locked to interior intracavitary.
This case can also further optimize, as shown in figure 4, the inner wall of hollow part 22 is equipped with mirror image setting or symmetrically arranged two
A rib 6, mirror image and is symmetrical arranged, and makes rib elastic recovery dynamic balance, and add the intensity of elastic-restoring force.
The quantity of certain rib is not restricted, and setting direction and shape can further optimize, the change of shape for example in
Corrugated rib, the rib being arc-shaped, the rib of the rib of bent and interruption as shown in Figure 5, setting direction change
As shown in Figure 6 to 8, rib is set variants in 70 °, 85 ° and 30 ° angles 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 of this programme and resistance bacterium performance, following design is employed, first, the solid part 21 of rubber plug 2
Upper surface be in concave arc shape, the structure of concave arc shape is easy to the sealing between solid part and access interface.Second, solid part 21 and sky
The connecting pin of center portion 22 has a tapered portion 7, and the bottom of access interface 12 is equipped with the annular slope 8 to match with tapered portion 7, 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 further optimize, such as the access interface 12 of needleless joint 1 is equipped with external screw thread.For another example needleless
The side wall of connector 1 sets branch connector 10, and 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 a kind of operation principle of needleless connector of the present invention below：
During original state, as shown in Fig. 2, needleless connector is in closed state；When needleless 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 needleless connector
State shown in Fig. 3 is formed, after external equipment leaves, the change such as Fig. 3 to Fig. 2 occurs for needleless connector, therebetween, due to being oriented to
Rib bending curvature is big, possesses stronger mechanical strength, increases the elastic-restoring force of rubber plug so being oriented to rib, replys speed
It is fast and smooth, prevent the situation of rubber plug locking in the lumen and occur, can easily prevent rubber plug aging from causing the inadequate situation of restoring force
Occur, indirectly add the service life of needleless connector.
The present invention still has numerous embodiments, all technical sides formed using equivalents or equivalent transformation
Case, is within the scope of the present invention.
Claims (9)
1. a kind of needleless connector, including needleless joint and rubber plug, it is characterised in that：The needleless joint, which includes one, has inner cavity
Cavity and access interface, output port positioned at cavity both ends, the cavity wall of output port side cavity be equipped with an extension
To inner cavity and it is used for the internal core print seat for carrying rubber plug；The rubber plug includes a solid part and a hollow part, the side wall of the solid part
Equipped with least one groove；The rubber plug is arranged 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 the hollow part internal cavity；Have in the hollow part at least one hollow for increasing
The rib of portion's elastic recovery；The rib is the S-type guiding rib being vertically disposed.
A kind of 2. needleless connector according to claim 1, it is characterised in that：The rib is arranged at the hollow part
Inner wall.
A kind of 3. needleless connector according to claim 1, it is characterised in that：The upper surface of the solid part of the rubber plug is in recessed
Arc.
A kind of 4. needleless connector according to claim 1, it is characterised in that：The connecting pin of the solid part and hollow part has
There is a tapered portion, the bottom of the access interface is equipped with the annular slope to match with the tapered portion, the tapered portion and institute
State annular slope and form sealing structure.
A kind of 5. needleless connector according to claim 4, it is characterised in that：It is equipped between the annular slope and tapered portion
Sealing ring, the sealing ring are arranged on annular slope or in tapered portion.
A kind of 6. needleless connector according to claim 1, it is characterised in that：The internal core print seat is Nian Jie with the hollow part
Or welding.
A kind of 7. needleless connector according to claim 1, it is characterised in that：The access interface of the needleless joint is equipped with outer
Screw thread.
A kind of 8. needleless connector according to claim 1, it is characterised in that：The needleless joint is equipped with branch connector.
A kind of 9. needleless connector according to claim 8, it is characterised in that：The branch connector is equipped with branch pipe external screw thread, institute
State branch connector and be additionally provided with end cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510213159.6A CN104815364B (en) | 2015-04-30 | 2015-04-30 | A kind of needleless connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510213159.6A CN104815364B (en) | 2015-04-30 | 2015-04-30 | A kind of needleless connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104815364A CN104815364A (en) | 2015-08-05 |
| CN104815364B true CN104815364B (en) | 2018-04-20 |
Family
ID=53725996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510213159.6A Active CN104815364B (en) | 2015-04-30 | 2015-04-30 | A kind of needleless connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104815364B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114082040A (en) * | 2021-10-12 | 2022-02-25 | 杭州美克恒辉实业有限公司 | Infusion needleless connector with positive pressure elastic valve |
| CN115177855B (en) * | 2022-06-24 | 2024-02-27 | 苏州林华医疗器械股份有限公司 | Non-rebound double-end needleless connector |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201880205U (en) * | 2010-10-29 | 2011-06-29 | 李丹青 | Integrated germproof needle-less closed transfusion joint |
| CN102145198A (en) * | 2010-02-09 | 2011-08-10 | 怡安医疗器材股份有限公司 | Low back pressure needle-free assembly and device thereof |
| 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 |
| CN103418049A (en) * | 2012-08-29 | 2013-12-04 | 美昕医疗器械(昆山)有限公司 | Needleless connector |
| CN204655653U (en) * | 2015-04-30 | 2015-09-23 | 苏州林华医疗器械有限公司 | A kind of needleless connector |
-
2015
- 2015-04-30 CN CN201510213159.6A patent/CN104815364B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102145198A (en) * | 2010-02-09 | 2011-08-10 | 怡安医疗器材股份有限公司 | Low back pressure needle-free assembly and device thereof |
| CN201880205U (en) * | 2010-10-29 | 2011-06-29 | 李丹青 | Integrated germproof needle-less closed transfusion joint |
| CN103418049A (en) * | 2012-08-29 | 2013-12-04 | 美昕医疗器械(昆山)有限公司 | Needleless connector |
| 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 |
| CN204655653U (en) * | 2015-04-30 | 2015-09-23 | 苏州林华医疗器械有限公司 | A kind of needleless connector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104815364A (en) | 2015-08-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9289588B2 (en) | Connector against contrary flowing for medical treatment | |
| CN104815363B (en) | A kind of positive pressure connector | |
| US20190314624A1 (en) | Compressible cannula valve | |
| CN105726206B (en) | Auripuncture, Injection in Tympanic Cavity medical treatment device | |
| CN104815364B (en) | A kind of needleless connector | |
| CN106730119B (en) | Needleless connector for transfusion | |
| CN204655652U (en) | A kind of malleation connector | |
| CN204582131U (en) | A kind of safety transfusion apparatus for children | |
| CN205832284U (en) | A kind of positive pressure needle-free infusion connector | |
| CN204655653U (en) | A kind of needleless connector | |
| CN204364655U (en) | A kind of positive pressure connector | |
| CN201061638Y (en) | Non-needle enclosed transfusion joint | |
| CN204158808U (en) | A kind of high pressure remaining needle | |
| CN105476751B (en) | Auripuncture, Injection in Tympanic Cavity medical treatment device | |
| CN204017143U (en) | Counterflow-preventing positive pressure connector | |
| CN207412511U (en) | A kind of disposable needleless medicine-feeding joint | |
| CN103418049B (en) | Needleless joint | |
| CN208770563U (en) | A kind of security closed positive pressure needle-free connector | |
| CN207445281U (en) | A kind of infusion needleless joint | |
| CN208838883U (en) | Calparine cap | |
| CN105496644B (en) | Auripuncture, Injection in Tympanic Cavity medical treatment device | |
| CN206443968U (en) | Blood purification | |
| CN217697505U (en) | Positive pressure needle-free connector valve core | |
| CN107802920A (en) | A kind of security closed positive pressure needle-free joint | |
| CN211751490U (en) | Positive pressure closed type transfusion joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |
|
| COR | Change of bibliographic data | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |