CN104645460A - Fatigue-resistant needle-free joint - Google Patents
Fatigue-resistant needle-free joint Download PDFInfo
- Publication number
- CN104645460A CN104645460A CN201510076145.4A CN201510076145A CN104645460A CN 104645460 A CN104645460 A CN 104645460A CN 201510076145 A CN201510076145 A CN 201510076145A CN 104645460 A CN104645460 A CN 104645460A
- Authority
- CN
- China
- Prior art keywords
- plug
- sealing
- needleless joint
- shell
- otch
- 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
- A61M5/178—Syringes
- A61M5/31—Details
-
- 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
- A61M5/178—Syringes
- A61M5/31—Details
- A61M2005/3103—Leak prevention means for distal end of syringes, i.e. syringe end for mounting a needle
- A61M2005/3106—Plugs for syringes without needle
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- 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 fatigue-resistant needle-free joint. The fatigue-resistant needle-free joint comprises an outer shell, a sealing plug, a conical section and a base body part, wherein the outer shell is formed by pressing an upper shell and a lower shell which are of through hole structures; an accommodating cavity is formed in the upper shell; the sealing plug is arranged in the accommodating cavity formed in the outer shell; the sealing plug comprises an extrusion section which is of a cylindrical solid structure; a first circular budge is formed in the center of one side, towards to the upper end opening of the upper shell, of the sealing plug, and is positioned on the top surface of the extrusion section; the first circular budge is matched with the structure of a liquid outlet end of an injection syringe; the conical section is of a hollow structure; the conical section extends downwards from the bottom end of the extrusion section; the outer wall of the conical section is a conical surface with the inclination degree of 30 to 50 degrees; the base body part extends downwards from the bottom end of the conical section; the base body part is of a hollow cylindrical structure; a flow channel is formed along the central axis of the sealing plug.
Description
Technical field
The present invention relates to a kind of medical apparatus and instruments.More particularly, the present invention relates to a kind of injection zero-pressure joint with fatigue-resistance characteristics.
Background technology
All there is unstability in the quality of needleless joint and performance in the market, and wherein, in needleless joint, the design of sealing-plug exists the defect of fatigue durability difference, when needleless joint is long after injection extruding, sealing-plug there will be phenomenons such as subsiding, cannot reset, and its life-span is shorter, and dependability is poor.
Existing containment vessel adopts ultrasound wave structure to be fixedly arranged on sealing-plug periphery, and research finds that this structure there will be the problem of sealing difference after a long time use.
Summary of the invention
An object of the present invention is to solve at least above-mentioned defect, and the advantage will illustrated at least is below provided.
Another object of the present invention is to provide a kind of endurance type needleless joint, is reduced the hidden danger of Needleless injection, improve injection process safety by the use of this joint.
A further object of the invention is to provide a kind of endurance type needleless joint sealing-plug, is intended to, by sealing-plug and syringe connectivity port and the structural design of boring section outer wall, improve its fatigue durability, extends sealing-plug service life.
In order to realize, according to these objects of the present invention and other advantage, providing a kind of endurance type needleless joint, comprise,
Shell, formed by the upper and lower casing pressing all in through hole structure, described upper shell lower end inner wall is provided with some grooves, described lower house upper end outer wall is provided with described groove protruding one to one, described groove and described projection closely cooperate formation integrative-structure, designed one to one, realize closely cooperating of upper-lower casing by groove and projection, ensure the security seal of the rear joint entirety of assembling, described upper shell forms an accommodating cavity; And,
Sealing-plug, be located in the accommodating cavity of described shell formation, described sealing-plug comprises,
Extruded segment, in column type entity structure, described extruded segment is positioned at described upper shell upper port, described sealing-plug is provided with the first circular protrusions towards the central authorities of upper shell upper port side, described first circular protrusions is positioned at end face in described extruded segment, described first circular protrusions and syringe liquid outlet structure matching, the design of the first circular protrusions makes syringe liquid outlet and joint can form close-fitting state, plays good drainage;
Cone section, hollow structure, described cone section is from described extruded segment bottom to downward-extension, and described cone section outer wall is the conical surface that gradient is 30 ~ 50 degree, and described cone section and described upper enclosure inner wall fit tightly and form jam-packed state;
Matrix part, from described cone section bottom to downward-extension, described matrix part is hollow circuit cylinder body structure;
Wherein, described sealing-plug is provided with runner along central axial line, and described runner is made up of the through hole connection be located in described cone section and described matrix part, and described first circular protrusions offers the first otch, and it communicates with described runner.
Upon injection, syringe inwardly extrudes described extruded segment, and cone section is shunk, and after injection terminates, syringe leaves extruded segment, and cone section is restored.
Preferably, wherein, described sealing-plug is formed in one structure.Integrated plug construction can ensure sealing when injecting.
Preferably, wherein, the ratio of described extruded segment, cone segment base body length is 1.5: 3: 5 ~ 3.5: 5: 7.The gradient design of described cone section outer wall and the design of each segment length ratio effectively improve sealing-plug fatigue durability.
Preferably, wherein, described sealing-plug lower end is also provided with sealing gasket, and described sealing gasket is provided with the second circular protrusions towards the side wall centers of lower house side, and described second circular protrusions central authorities are provided with the second otch, and described runner communicates with described second otch.
Preferably, wherein, described sealing gasket is thin rounded flakes, and described sealing gasket is column type or laminated structure.When injection terminates, when syringe leaves extruded segment, negative pressure drop in sealing-plug can be low to moderate zero-pressure state by the design of sealing gasket, stops backflow.
Preferably, wherein, the diameter of described second projection is less than described sealing gasket diameter.
Preferably, wherein, be provided with mozzle in described lower house, described mozzle communicates with described second otch.
Upon injection, syringe liquid outlet aims at the first circular protrusions, and the first otch opens, and liquid flows into described first otch, and enters in runner by the first otch, flows into the second otch along described runner, and flows into mozzle through the second otch.
Preferably, wherein, described sealing-plug and described sealing gasket are made by gum elastic.
Preferably, wherein, described upper-lower casing is all made of plastics.
The present invention at least comprises following beneficial effect: 1) because shell adopts tongue and groove pressing to form, instead of traditional supersonic machining process, therefore, it is possible to realize automated production, enhance productivity, reduce product cost; 2) because sealing-plug cone section adopts conical design, there is the best rebound reset design of golden section, avoid Reusability or unconventional use to cause the failed possibility that resets; 3) due to the design of sealing-plug top convex shaped arc, when nurse uses syringe crush seal plug top convex shaped arc, convex shaped arc and the sealing of syringe inner hole are better, prevent leaked liquid from remaining, in extrusion process, otch is just in time opened from center, otch can not be excessive too small, and convex shaped arc can be good at playing sealing effectiveness after resetting, the otch vestige of cutter die cutting is can't see on surface, and sealing-plug top convex shaped arc facilitates nurse to sterilize at Reusability cotton swab, can not sterilize as recessed heavy being not easy of product plane on market, easily miss; 4) because sealing gasket adopts convex shaped arc design, after liquid is extruded, otch can be closed in time, prevent extraneous antibacterial from entering infected patient blood.
Part is embodied by explanation below by other advantage of the present invention, target and feature, part also will by research and practice of the present invention by those skilled in the art is understood.
Accompanying drawing explanation
Fig. 1-1 is the structural representation of described endurance type needleless joint of the present invention;
Fig. 1-2 is the structural representation two of described endurance type needleless joint of the present invention;
Fig. 1-3 is the structural representation three of described endurance type needleless joint of the present invention;
Fig. 1-4 is the cross-sectional view of described endurance type needleless joint of the present invention;
Fig. 2-1 is the upper shell structural representation one of the shell of described endurance type needleless joint of the present invention;
Fig. 2-2 is the upper shell structural representation two of the shell of described endurance type needleless joint of the present invention;
Fig. 2-3 is the upper shell structural representation three of the shell of described endurance type needleless joint of the present invention;
Fig. 3-1 is the lower house structural representation one of the shell of described endurance type needleless joint of the present invention;
Fig. 3-2 is the lower house structural representation two of the shell of described endurance type needleless joint of the present invention;
Fig. 3-3 is the lower house structural representation three of the shell of described endurance type needleless joint of the present invention;
Fig. 3-4 is the lower house structural representation four of the shell of described endurance type needleless joint of the present invention;
Fig. 4-1 is the plug construction schematic diagram one of described endurance type needleless joint of the present invention;
Fig. 4-2 is the plug construction schematic diagram two of described endurance type needleless joint of the present invention;
Fig. 4-3 is the plug construction schematic diagram three of described endurance type needleless joint of the present invention;
Fig. 5-1 is the gasket structure schematic diagram one of described endurance type needleless joint of the present invention;
Fig. 5-2 is the gasket structure schematic diagram two of described endurance type needleless joint of the present invention;
Upper shell-1; Lower house-2; Groove-3; Protruding-4; Sealing-plug-5; Sealing gasket-6; First circular protrusions-7; First otch-8; Second circular protrusions-9; Second otch-10; Mozzle-11; Runner-12.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail, can implement according to this with reference to description word to make those skilled in the art.
Should be appreciated that used hereinly such as " to have ", other element one or more do not allotted in " comprising " and " comprising " term or the existence of its combination or interpolation.
Use in this case " on " D score uses in order to character express is clear, do not represent the restriction on direction, be interpreted as: be upper with upper shell side, under lower house side is.
Following figures illustrate according to a kind of way of realization of the present invention, comprising: shell, formed by the upper and lower casing pressing all in through hole structure, described upper shell lower end inner wall is provided with some grooves, described lower house upper end outer wall is provided with described groove protruding one to one, described groove and described projection closely cooperate formation integrative-structure, and can reduce difficulty of processing by tongue and groove pressing structure, structure is reliable, and black box, be located in the accommodating cavity of described upper shell formation, described black box comprises sealing-plug and is located at the sealing gasket of described sealing-plug lower end, described sealing-plug is provided with runner along central axial line, described sealing-plug is provided with the first circular protrusions towards the central authorities of upper shell upper port side, described first circular protrusions and syringe liquid outlet structure matching, described first circular protrusions offers the first otch, it communicates with described runner, when nurse uses syringe crush seal plug top convex shaped arc, convex shaped arc and the sealing of syringe inner hole are better, prevent leaked liquid from remaining, and the described runner other end communicates with the second otch of described sealing gasket central authorities, described second otch is located at and is positioned at described sealing gasket towards in the second circular protrusions of the side wall centers of lower house side, wherein, be provided with mozzle in described lower house, described mozzle communicates with described second otch.
Described sealing-plug is formed in one structure, is beneficial to and still can uses after sealing-plug extrudes repeatedly, and reliability improves.
Described sealing-plug comprises, extruded segment, and in column type entity structure, described extruded segment is positioned at described upper shell upper port, and described first circular protrusions is positioned at end face in described extruded segment; Cone section, hollow structure, described cone section is from described extruded segment bottom to downward-extension, and described cone section outer wall is the conical surface that gradient is 30 °, and described cone section and described upper enclosure inner wall fit tightly and form jam-packed state; Matrix part, from described cone section bottom to downward-extension, described matrix part is hollow circuit cylinder body structure; Wherein, described runner is made up of the accommodating cavity connects be located in described cone section and described matrix part, is beneficial to and still can uses after sealing-plug extrudes repeatedly, and reliability improves.
The ratio of described extruded segment, cone segment base body length is 1.5: 3: 5.Mate with syringe and use.
Described sealing gasket is thin rounded flakes, and described sealing gasket is unsuitable blocked up, otherwise injection pressure is not enough to open otch, is unfavorable for that liquid flows in patient body.
The diameter of described second projection is less than described sealing gasket diameter, and the diameter of the second projection is unsuitable excessive or too small, otherwise is unfavorable for that fluid pressure opens otch.
Described sealing-plug and described sealing gasket are made by gum elastic, are convenient to the resilience ensure fatigue durability after being extruded of sealing-plug and described sealing gasket.
Here the number of devices illustrated and treatment scale are used to simplify explanation of the present invention.The application of shell of the present invention and sealing-plug, modifications and variations be will be readily apparent to persons skilled in the art.
As mentioned above, according to the present invention, because shell adopts screw thread pressing to form, therefore, it is possible to realize automated production, enhance productivity, reduce product cost; Because sealing-plug adopts conical design, there is the best rebound reset design of golden section, avoid Reusability or unconventional use to cause the failed possibility that resets; Due to the design of sealing-plug top convex shaped arc, when nurse uses syringe crush seal plug top convex shaped arc, convex shaped arc and the sealing of syringe inner hole are better, prevent leaked liquid from remaining, in extrusion process, otch is just in time opened from center, otch can not be excessive too small, and can be good at playing sealing effectiveness after convex shaped arc reset, the otch vestige of cutter die cutting is can't see on surface, and sealing-plug top convex shaped arc facilitates nurse to sterilize at Reusability cotton swab, can not sterilize as recessed heavy being not easy of product plane on market, easily miss; Because sealing gasket adopts convex shaped arc design, after liquid is extruded, otch can be closed in time, prevent extraneous antibacterial from entering infected patient blood.。
Technological merit:
1., replace ultrasound wave, rely on physical engagement between plastics, easily can realize automated production, enhance productivity, reduce product cost.
2., plug construction design, the best rebound reset design of concrete golden section, according to sealing-plug experiment detection extruding for a long time in 48 hours, still can reset, and accomplishes according to effectively, avoids unconventional use to cause resetting unsuccessfully possibility.
3., sealing-plug top convex shaped arc, effect is that nurse is when using after syringe extruding, better with the sealing of syringe 6: 100 inner hole, prevent leaked liquid from remaining, in extrusion process, cut is just in time opened from center, cut can not be excessive too small, and can be good at playing sealing effectiveness after convex shaped arc reset, and the cut vestige of cutter die cutting is can't see on surface.On market, obviously there is very long cut at center at present, obviously has gap, can pollute after some Reusabilities.
4., sealing-plug top convex shaped arc nurse Reusability time cotton swab sterilization can play very good effect, heavy can not be not easy sterilization as product plane on market is recessed, easily miss.
Operation principle:
When nurse uses, extrude F place with syringe 6: 100, now liquid medicine opens H place cut through G place passage by fluid pressure extruding by the cut at F place, and liquid medicine flow in tube for transfusion.
1., overall structure form
2., gasket, disk center spill, convex, middle cut.
3., sealing plug, B place, top convex-concave circular arc or cylindricality.
4., sealing-plug C, D place height, angle, parameter area.
5., male screw socket H and female screw socket G coordinate F place concave-convex type muscle be connected and be sealed and matched.
Comparative example: existing sealing-plug there will be serious problem on deformation after injecting 24h continuously, and be difficult to resilience, practical application exists potential safety hazard, compared with this sealing-plug, after the sealing-plug that this patent provides injects 24h continuously, resilience is good, and injection risk reduces greatly.
Although embodiment of the present invention are open as above, it is not restricted to listed in description and embodiment utilization.It can be applied to various applicable the field of the invention completely.For those skilled in the art, can easily realize other amendment.Therefore do not deviating under the general concept that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the legend described.
Claims (9)
1. an endurance type needleless joint, comprises,
Shell, formed by the upper and lower casing pressing all in through hole structure, described upper shell lower end inner wall is provided with some grooves, described lower house upper end outer wall is provided with described groove protruding one to one, described groove and described projection closely cooperate formation integrative-structure, and described upper shell forms an accommodating cavity; And,
Sealing-plug, be located in the accommodating cavity of described shell formation, described sealing-plug comprises,
Extruded segment, in column type entity structure, described extruded segment is positioned at described upper shell upper port, described sealing-plug is provided with the first circular protrusions towards the central authorities of upper shell upper port side, described first circular protrusions is positioned at end face in described extruded segment, described first circular protrusions and syringe liquid outlet structure matching;
Cone section, hollow structure, described cone section is from described extruded segment bottom to downward-extension, and described cone section outer wall is the conical surface that gradient is 30 ~ 50 degree, and described cone section and described upper enclosure inner wall fit tightly and form jam-packed state;
Matrix part, from described cone section bottom to downward-extension, described matrix part is hollow circuit cylinder body structure;
Wherein, described sealing-plug is provided with runner along central axial line, and described runner is made up of the through hole connection be located in described cone section and described matrix part, and described first circular protrusions offers the first otch, and it communicates with described runner.
2. endurance type needleless joint as claimed in claim 1, wherein, described sealing-plug is formed in one structure.
3. endurance type needleless joint as claimed in claim 2, wherein, the ratio of described extruded segment, cone segment base body length is 1.5: 3: 5 ~ 3.5: 5: 7.
4. endurance type needleless joint as claimed any one in claims 1 to 3, wherein, described sealing-plug lower end is also provided with sealing gasket, described sealing gasket is provided with the second circular protrusions towards the side wall centers of lower house side, and described second circular protrusions central authorities are provided with the second otch, described runner communicates with described second otch.
5. endurance type needleless joint as claimed in claim 4, wherein, described sealing gasket is cylindricality or laminated structure.
6. endurance type needleless joint as claimed in claim 5, wherein, the diameter of described second projection is less than described sealing gasket diameter.
7. endurance type needleless joint as claimed in claim 6, wherein, be provided with mozzle in described lower house, described mozzle communicates with described second otch.
8. endurance type needleless joint as claimed in claim 7, wherein, described sealing-plug and described sealing gasket are made by gum elastic.
9. the endurance type needleless joint according to any one of claim 1,2,3,5,6,7 or 8, wherein, described upper-lower casing is all made of plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510076145.4A CN104645460B (en) | 2015-02-12 | 2015-02-12 | A kind of endurance type needleless joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510076145.4A CN104645460B (en) | 2015-02-12 | 2015-02-12 | A kind of endurance type needleless joint |
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| Publication Number | Publication Date |
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| CN104645460A true CN104645460A (en) | 2015-05-27 |
| CN104645460B CN104645460B (en) | 2018-01-26 |
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| CN201510076145.4A Active CN104645460B (en) | 2015-02-12 | 2015-02-12 | A kind of endurance type needleless joint |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105148359A (en) * | 2015-07-27 | 2015-12-16 | 昆山安卓精密模具有限公司 | Pressure-resistant needle-free connector |
| WO2019134081A1 (en) * | 2018-01-04 | 2019-07-11 | 福建省百仕韦医用高分子股份有限公司 | Self-resetting sealing needleless medical infusion connector |
| CN114557886A (en) * | 2022-01-21 | 2022-05-31 | 宁波汉科医疗器械有限公司 | Needleless connector and medicine adding assembly |
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| US6050978A (en) * | 1997-05-09 | 2000-04-18 | Becton Dickinson And Company | Needleless valve connector |
| CN101189466A (en) * | 2005-02-14 | 2008-05-28 | 吉莱罗有限责任公司 | Valved fluid connector |
| CN203694241U (en) * | 2014-01-20 | 2014-07-09 | 山东威高集团医用高分子制品股份有限公司 | Closed type infusion connector |
| CN104023786A (en) * | 2011-12-27 | 2014-09-03 | 尼普洛株式会社 | Needleless connector |
| CN204723523U (en) * | 2015-02-12 | 2015-10-28 | 昆山安卓精密模具有限公司 | A kind of endurance type needleless joint |
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2015
- 2015-02-12 CN CN201510076145.4A patent/CN104645460B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6050978A (en) * | 1997-05-09 | 2000-04-18 | Becton Dickinson And Company | Needleless valve connector |
| CN101189466A (en) * | 2005-02-14 | 2008-05-28 | 吉莱罗有限责任公司 | Valved fluid connector |
| CN104023786A (en) * | 2011-12-27 | 2014-09-03 | 尼普洛株式会社 | Needleless connector |
| CN203694241U (en) * | 2014-01-20 | 2014-07-09 | 山东威高集团医用高分子制品股份有限公司 | Closed type infusion connector |
| CN204723523U (en) * | 2015-02-12 | 2015-10-28 | 昆山安卓精密模具有限公司 | A kind of endurance type needleless joint |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105148359A (en) * | 2015-07-27 | 2015-12-16 | 昆山安卓精密模具有限公司 | Pressure-resistant needle-free connector |
| WO2019134081A1 (en) * | 2018-01-04 | 2019-07-11 | 福建省百仕韦医用高分子股份有限公司 | Self-resetting sealing needleless medical infusion connector |
| CN114557886A (en) * | 2022-01-21 | 2022-05-31 | 宁波汉科医疗器械有限公司 | Needleless connector and medicine adding assembly |
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| Publication number | Publication date |
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| CN104645460B (en) | 2018-01-26 |
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Effective date of registration: 20221021 Address after: No. 6, Zhenxing Third Road, Juegang Street, Rudong County, Nantong City, Jiangsu Province 226000 Patentee after: Jiangsu Android Medical Technology Co.,Ltd. Address before: Building 6, Industrial Zone, Original Base, No. 2588, Huanqing Road, North of Kunshan City, Suzhou City, Jiangsu Province, 215300 Patentee before: KUNSHAN ANGEL PRECISION MOLD CO.,LTD. |