CN104815364A - Needleless connection piece - Google Patents
Needleless connection piece Download PDFInfo
- Publication number
- CN104815364A CN104815364A CN201510213159.6A CN201510213159A CN104815364A CN 104815364 A CN104815364 A CN 104815364A CN 201510213159 A CN201510213159 A CN 201510213159A CN 104815364 A CN104815364 A CN 104815364A
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- CN
- China
- Prior art keywords
- needleless
- joint
- hollow part
- connector according
- needleless connector
- 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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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
The invention discloses a needless connection piece. The needless connection piece comprises a needless connector and a rubber plug, wherein the needless connector comprises an access port, an output port and a cavity with an inner cavity, an inner core seat is arranged in the inner cavity, the rubber plug comprises a solid portion and a hollow portion, at least one groove is formed in the side wall of the solid portion, at least one rib used to increase elastic recovery ability of the hollow portion is arranged in the hollow portion, the rubber plug is arranged in the inner cavity of the needless connector, the solid portion and the access port of the needless connector form a seal structure, and the hollow portion is installed in the inner core seat in connection mode. According to the needless connection piece, the at least one rib used to increase the elastic recovery ability of the hollow portion is arranged on the inner wall of the hollow portion. The needless connection piece has strong resilience force, guarantees positive pressure, enables the rubber plug to have enough mechanical strength, uses the guiding rib which is in S shape and has strong resilience force, enables the guiding rib to limit the deformation direction of the rubber plug, and prevents the rubber plug from jamming in the inner cavity.
Description
Technical field
The present invention relates to a kind of needleless connector, particularly relate to a kind of grafting reliable, closed accurate, deformation recovery is smooth and easy rapidly and have the needleless connector of replying guide rail.
Background technology
When needing to infuse in infusion process prolonged and repeatedly, generally by joint, the venous detaining needle entered in human vein or inlying catheter and liquid medicine injecting device are connected to each other, thus realize the operations such as dosing.
The joint of conventional belt latex septum has limitation, need could realize dosing by acupuncture, because latex septum is by after needle pierces, the pollutant of syringe needle and rubber scraps can enter medicinal liquid, and enter human body with medicinal liquid, thus cause great potential safety hazard to the health of patient.
In prior art, there is the needleless connector of much different employing plug as inner core, and plug material is softer, mechanical strength is lower, elastic recovery speed is slow, in plug Recovery Process, the situations such as bacterial invasion are easily caused to occur, and plug compressive deformation track is not fixed, easily occur that plug is locked on interior intracavity, cause the situations such as needleless connector damage to occur.Also there is the plug of improvement, adopt the plug of undaform, the plug and mould of undaform makes complicated, the elastic force needing strict production control technological parameter and material mixture ratio to have realized and malleation amount, all higher to the requirement of material and production technology, production cost is high.
Summary of the invention
The object of the invention is to solve above-mentioned technical problem, propose a kind of needleless connector.
Object of the present invention, will be achieved by the following technical programs:
A kind of needleless connector, comprises needleless joint and plug, it is characterized in that:
Described needleless joint comprises one and has the cavity of inner chamber and be positioned at access interface, the output port at cavity two ends, and the chamber wall of described output port side cavity is provided with one and extends to inner chamber and internal core print seat for carrying plug;
Described plug comprises a solid part and a hollow part, and the sidewall of described solid part is provided with at least one groove;
Described plug is arranged in the inner chamber of needleless joint, and the access interface of described solid part and needleless joint forms hermetically-sealed construction, and one end that described hollow part deviates from solid part is secured to described internal core print seat,
Described internal core print seat has the passage of a connection outside atmosphere and described hollow part internal cavity;
There is in described hollow part at least one muscle rib for increasing hollow part elastic recovery.
Preferably, described muscle rib is arranged at the inwall of described hollow part.
Preferably, described muscle rib is vertically to the S-type guiding rib rib arranged.
Preferably, the upper surface of the solid part of described plug is arcs of recesses.
Preferably, the link of described solid part and hollow part has a tapered portion, and the bottom of described access interface is provided with the annular slope matched with described tapered portion, and described tapered portion and described annular slope form hermetically-sealed construction.
Preferably, be provided with sealing ring between described annular slope and tapered portion, described sealing ring is arranged on annular slope or in tapered portion.
Preferably, described internal core print seat and described hollow part are bonding or weld.
Preferably, the access interface of described needleless joint is provided with external screw thread.
Preferably, described needleless joint is provided with a joint.
Preferably, described joint is provided with arm external screw thread, and described joint is also provided with end cap.
Beneficial effect of the present invention is mainly reflected in:
1. the inwall of hollow part is provided with at least one muscle rib for increasing hollow part elastic recovery.There is stronger resilience force, ensure malleation amount, make plug possess enough mechanical strengths;
2. adopt and have S-type guiding rib rib, have stronger resilience force, guiding rib rib can limit the deformation direction of plug, prevents plug to be locked to interior intracavity;
3. the upper surface of plug is arcs of recesses, adds the obturation effect of needleless connector, better hinders bacterium;
4. tapered portion and annular slope form hermetically-sealed construction, and form secondary seal, obturation effect is better;
5. be provided with sealing ring between annular slope and tapered portion, further increase the sealing property between tapered portion and circular slanting.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of needleless connector of the present invention;
Fig. 2 is the structural representation that a kind of needleless connector of the present invention is in closed state;
Fig. 3 is the structural representation that a kind of needleless connector of the present invention inserts external equipment;
Fig. 4 is muscle rib is mirror image or symmetrically arranged structural representation;
Fig. 5 is a structural representation for break the muscle rib;
Fig. 6 is the structural representation that muscle rib is arranged horizontal by 70 ° of angles;
Fig. 7 is the structural representation that muscle rib is arranged horizontal by 85 ° of angles;
Fig. 8 is the structural representation that muscle rib is arranged horizontal by 30 ° of angles;
Fig. 9 is the structural representation of X-type combination muscle rib;
Figure 10 is the structural representation of another kind of combination muscle rib.
Detailed description of the invention
The invention provides a kind of needleless connector, there is structure simple, cheap for manufacturing cost, grafting is reliable, closed accurate, there is enough mechanical strengths and the feature such as elastic recovery is smooth and easy.
As shown in Figure 1 to Figure 3, a kind of needleless connector, comprise needleless joint 1 and plug 2, plug preferably adopts silica gel plug, wherein, needleless joint 1 comprises one and has the cavity 11 of inner chamber 3 and be positioned at access interface 12, the output port 13 at cavity 11 two ends, access interface 12 attaching external input device, output port 13 is communicated with transfusion catheter, and the chamber wall of output port 13 side cavity 11 is provided with one and extends to inner chamber 3 and internal core print seat 4 for carrying plug 2; Plug 2 comprises a solid solid part 21 and a hollow hollow part 22, and the sidewall of solid part 21 is provided with at least one groove 5; Plug 2 is arranged in the inner chamber 3 of needleless joint 1, and solid part 21 forms hermetically-sealed construction with the access interface 12 of needleless joint 1, one end that hollow part 22 deviates from solid part 21 is secured to internal core print seat 4, internal core print seat 4 has the passage of a connection outside atmosphere and hollow part internal cavity, passage belongs to prior art, does not repeat them here; Internal core print seat 4 is bonding with hollow part 22 or welds, and is convenient to internal core print seat 4 and seals with hollow part 22 and connect, and certainly can ensure that the screw thread of its sealing and buckle connect and also be fine.Especially, there is in hollow part 22 at least one muscle rib 6 for increasing hollow part elastic recovery.This muscle rib has certain mechanical strength, and time bending, curvature is large, and elastic-restoring force is strong.
The muscle rib of this case is arranged at the inwall of hollow part 22 or suspends in the inner, and the preferred structure of muscle rib is that guiding rib rib can limit the deformation direction of plug, prevents plug to be locked to interior intracavity vertically to the S-type guiding rib rib arranged.
This case also can be optimized further, and as shown in Figure 4, the inwall of hollow part 22 is provided with mirror image and arranges or symmetrically arranged two muscle ribs 6, mirror image and being symmetrical arranged, and makes muscle rib elastic recovery dynamic balance, and adds the intensity of elastic-restoring force.
The quantity of certain muscle rib is not restricted; setting direction and shape all can be optimized further; the Change Example of shape is as the muscle rib of the muscle rib of the muscle rib of undulate, muscle rib in circular arc, bent and interruption as shown in Figure 5; the Change Example of setting direction as shown in Figure 6 to 8; muscle rib and horizontal plane are arranged in 70 °, 85 ° and 30 ° of angles respectively; further; this case also can adopt the X-type be made up of two muscle ribs combination muscle rib as shown in Figure 9, and other combination muscle ribs similar to Figure 10 that can reach this case technique effect are also within the protection domain of this case.
For increasing sealing property and the resistance bacterium performance of this programme, have employed following design, one, the upper surface of the solid part 21 of plug 2 is arcs of recesses, and the structure of arcs of recesses is convenient to the sealing between solid part and access interface.Its two, solid part 21 has a tapered portion 7 with the link of hollow part 22, and the bottom of access interface 12 is provided with the annular slope 8 matched with tapered portion 7, and tapered portion 7 and annular slope 8 form hermetically-sealed construction.Its three, be provided with sealing ring 9 between annular slope 8 and tapered portion 7, sealing ring 9 is arranged on annular slope 8 or in tapered portion 7.
This programme also can be optimized further, and the access interface 12 of such as needleless joint 1 is provided with external screw thread.Again such as, the sidewall of needleless joint 1 arranges a joint 10, and the joint 10 set up is provided with arm external screw thread, and a joint 10 is also provided with end cap.
Below the operation principle of a kind of needleless connector of the present invention:
During original state, as shown in Figure 2, needleless connector is in closed state, when needleless connector access external equipment, external equipment is no-needle transfusion equipment or needleless injection device, the upper surface of external equipment compressing solid part, solid part pressurized rearward recess is out of shape, the hollow part of solid part compressing simultaneously produces distortion, external equipment is connected with inner chamber is unimpeded, now needleless connector forms state shown in Fig. 3, after external equipment leaves, there is the change as Fig. 3 to Fig. 2 in needleless connector, therebetween, because guiding rib rib bending curvature is large, possesses stronger mechanical strength, so guiding rib rib makes the elastic-restoring force of plug increase, reply speed is fast and smooth and easy, stop plug locking situation in the lumen to occur, easily can prevent the aging situation causing restoring force inadequate of plug from occurring, indirectly add the service life of needleless connector.
The present invention still has numerous embodiments, all employing equivalents or equivalent transformation and all technical schemes formed, and all drops within protection scope of the present invention.
Claims (10)
1. a needleless connector, comprises needleless joint and plug, it is characterized in that:
Described needleless joint comprises one and has the cavity of inner chamber and be positioned at access interface, the output port at cavity two ends, and the chamber wall of described output port side cavity is provided with one and extends to inner chamber and internal core print seat for carrying plug;
Described plug comprises a solid part and a hollow part, and the sidewall of described solid part is provided with at least one groove;
Described plug is arranged in the inner chamber of needleless joint, and the access interface of described solid part and needleless joint forms hermetically-sealed construction, and one end that described hollow part deviates from solid part is secured to described internal core print seat,
Described internal core print seat has the passage of a connection outside atmosphere and described hollow part internal cavity;
There is in described hollow part at least one muscle rib for increasing hollow part elastic recovery.
2. a kind of needleless connector according to claim 1, is characterized in that: described muscle rib is arranged at the inwall of described hollow part.
3. a kind of needleless connector according to claim 1, is characterized in that: described muscle rib is vertically to the S-type guiding rib rib arranged.
4. a kind of needleless connector according to claim 1, is characterized in that: the upper surface of the solid part of described plug is arcs of recesses.
5. a kind of needleless connector according to claim 1, it is characterized in that: the link of described solid part and hollow part has a tapered portion, the bottom of described access interface is provided with the annular slope matched with described tapered portion, and described tapered portion and described annular slope form hermetically-sealed construction.
6. a kind of needleless connector according to claim 5, it is characterized in that: be provided with sealing ring between described annular slope and tapered portion, described sealing ring is arranged on annular slope or in tapered portion.
7. a kind of needleless connector according to claim 1, is characterized in that: described internal core print seat and described hollow part are bonding or weld.
8. a kind of needleless connector according to claim 1, is characterized in that: the access interface of described needleless joint is provided with external screw thread.
9. a kind of needleless connector according to claim 1, is characterized in that: described needleless joint is provided with a joint.
10. a kind of needleless connector according to claim 9, it is characterized in that: described joint is provided with arm external screw thread, described joint is also 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 true CN104815364A (en) | 2015-08-05 |
| CN104815364B 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) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113041431A (en) * | 2019-12-26 | 2021-06-29 | 美昕医疗器械(昆山)有限公司 | Needleless connector |
| 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 |
| CN115177855A (en) * | 2022-06-24 | 2022-10-14 | 苏州林华医疗器械股份有限公司 | Non-rebound prevention type 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 combination 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 combination 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113041431A (en) * | 2019-12-26 | 2021-06-29 | 美昕医疗器械(昆山)有限公司 | Needleless connector |
| 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 |
| CN115177855A (en) * | 2022-06-24 | 2022-10-14 | 苏州林华医疗器械股份有限公司 | Non-rebound prevention type double-end needleless connector |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104815364B (en) | 2018-04-20 |
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| 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 |
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| COR | Change of bibliographic data | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |