CN103071200A - Positive-pressure needle-free connecting piece - Google Patents
Positive-pressure needle-free connecting piece Download PDFInfo
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- CN103071200A CN103071200A CN2013100330613A CN201310033061A CN103071200A CN 103071200 A CN103071200 A CN 103071200A CN 2013100330613 A CN2013100330613 A CN 2013100330613A CN 201310033061 A CN201310033061 A CN 201310033061A CN 103071200 A CN103071200 A CN 103071200A
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- shell
- plug
- pressure needle
- positive pressure
- free connector
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Abstract
The invention discloses a positive-pressure needle-free connecting piece comprising a shell with a hollow inner cavity, wherein the cross section of the shell is oval; the hollow inner cavity of the shell is internally provided with a rubber plug with a solid upper end part and a hollow lower end part; the cross section of the lower end part of the rubber plug is round; the lower end port of the shell is fixedly connected to the upper end of a connector base; the upper end of the connector base is provided with an annular groove; the lower end part of the rubber plug is sleeved in the annular groove; the bottom of the annular groove is provided with at least one air vent used for enabling the lower end part of the rubber plug to be communicated with the outside; a Luer connector with an inner pipe cavity is arranged at the lower end of the connector base; and one end, adjacent to the shell, of the inner pipe cavity of the Luer connector is provided with a diversion hole which is vertical to the axial direction and is used for enabling the inner pipe cavity of the Luer connector to be communicated with the hollow inner cavity of the shell. The positive-pressure needle-free connecting piece has the characteristics of improving the transfusion flow speed, being simple in structure, facilitating production and manufacture, lowering the production cost and the like.
Description
Technical field
The invention belongs to the infusion apparatus field, relate in particular to a kind of positive pressure needle-free connector.
Background technology
Positive pressure connector is a kind of infusion connector of Needleless seal, because it produces malleation extracting syringe or tube for transfusion moment, have simple to operate, avoid pricking wound, effectively reduce the blood back plugging and occur, prolong the advantages such as indwelling catheter time, be usually used in connecting Vein Tube.A kind of Needleless dosing positive pressure connector is disclosed among the Chinese patent CN101879339B, start the unlatching of plug by female Luer, thereby realize the liquid flow of single direction, the microgranule that may bring, the pollution of little bits because syringe needle punctures to avoid, when syringe was pulled up, this positive pressure connector can produce a malleation, and the liquid in the positive pressure connector is pushed ahead, avoiding blood backflow in remaining needle, to form thrombosis, thereby prevent the obstruction of remaining needle.But the cross section of the loam cake in the above-mentioned patent is circular, for the inwall that increases loam cake and the gap between the plug, to improve flow velocity, offer guiding gutter on the inwall of loam cake, but in the practical application, as containing macromolecular organizational structure in the liquid of carrying, such as blood, guiding gutter easy scuffing hemocyte is set, thereby impact transfusion curative effect.Simultaneously, the setting of guiding gutter also can form the dead angle at the inwall place of loam cake, causes the residual of medicine, affects the accuracy of pharmaceutical quantities.Because the cross section of loam cake be circular, for the ease of assembling, be provided with the structure of on-slip rib at the outer wall of loam cake, increased the difficulty of mfg. moulding die, the production cost height.
Summary of the invention
Defective in view of above-mentioned prior art exists the objective of the invention is to propose a kind of positive pressure needle-free connector, can improve infusion flow rate, and is simple in structure, is convenient to manufacture.
Purpose of the present invention will be achieved by the following technical programs:
A kind of positive pressure needle-free connector comprises that one has the shell of hollow cavity, and the cross section of described shell is oval; Be equipped with a plug with solid upper end and hollow bottom in the hollow cavity of described shell, the end face of the upper end of described plug is the plane and forms hermetically-sealed construction with the upper port of described shell, the side of the upper end of described plug is provided with the breach of at least one, and the cross section of the bottom of described plug is circular; The lower port of described shell is fixedly connected on the upper end of a plinth, the upper end of described plinth is provided with a toroidal cavity, the bottom of described plug is socketed in the described toroidal cavity, the bottom land of described toroidal cavity offers the bottom that makes described plug and the extraneous passage that communicates of at least one, the lower end of described plinth is provided with one and has the female Luer of interior tube chamber, and the interior tube chamber of described female Luer is provided with the pod apertures that the hollow cavity of an interior tube chamber that makes described female Luer perpendicular to axial direction and described shell is communicated with near an end of shell.
Preferably, above-mentioned positive pressure needle-free connector, wherein: the inwall of described shell is provided with a positioning strip, and the outer wall of the upper end of described plinth is provided with a locating slot corresponding with described positioning strip.
Preferably, above-mentioned positive pressure needle-free connector, wherein: the upper port of described shell has external screw thread.
Preferably, above-mentioned positive pressure needle-free connector, wherein: the sidewall of described shell is provided with an arm that is communicated with the hollow cavity of described shell.
Preferably, above-mentioned positive pressure needle-free connector, wherein: the upper end of described plug and bottom are formed in one.
Preferably, above-mentioned positive pressure needle-free connector, wherein: described toroidal cavity comprises an outer ring and a boss, and described boss is divided into the two halves boss by an axial cut-outs.
Preferably, above-mentioned positive pressure needle-free connector, wherein: the bottom land of described toroidal cavity offers two symmetrical passages, and it is fan-shaped that the cross section of described passage all is.
Outstanding effect of the present invention is: a kind of positive pressure needle-free connector of the present invention is that the hollow cavity of oval-shaped shell arranges cross section and is circular plug at cross section, increased the gap between the inwall of the outer wall of plug and shell, thereby improved infusion flow rate, avoided in the prior art because using the defective of the impact transfusion effects such as scuffing hemocyte that guide trough structure causes and drug residue; Simultaneously, need not to arrange on-slip rib structure on the outer wall of oval-shaped shell, can reach the purpose of being convenient to assemble, have simple in structurely, the characteristics such as be convenient to manufacture and reduce production costs.
Following constipation closes the embodiment accompanying drawing, the specific embodiment of the present invention is described in further detail, so that technical solution of the present invention is easier to understand, grasp.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is the cutaway view of the embodiment of the invention;
Cutaway view when Fig. 3 is the use of the embodiment of the invention;
Fig. 4 is the upward view of the embodiment of the invention.
The specific embodiment
Embodiment:
A kind of positive pressure needle-free connector of present embodiment such as Fig. 1～shown in Figure 4, comprises the shell 1 with hollow cavity, and the cross section of shell 1 is oval; The upper port 11 of shell 1 has external screw thread.Be equipped with the plug 2 with solid upper end 21 and hollow bottom 22 in the hollow cavity of shell 1, the upper end 21 of plug 2 and bottom 22 are formed in one.The end face of the upper end 21 of plug 2 is the plane and forms hermetically-sealed constructions with the upper port 11 of shell 1, and the side of the upper end 21 of plug 2 is provided with a breach 23, and the cross section of the bottom 22 of plug 2 be circle.The inwall of shell 1 is provided with positioning strip 12, and the outer wall of the upper end of plinth 3 is provided with the locating slot 31 corresponding with positioning strip 12, and positioning strip 12 is connected in the locating slot 31, works to install the location and prevents loading error.The sidewall of shell 1 is provided with the arm 13 that is communicated with the hollow cavity of shell 1.The lower port 14 of shell 1 is fixedly connected on the upper end of plinth 3, and the upper end of plinth 3 is provided with toroidal cavity, and the bottom 22 of plug 2 is socketed in the toroidal cavity.Toroidal cavity comprises outer ring 32 and boss 33, boss 33 is divided into the two halves boss by an axial cut-outs, the bottom land of toroidal cavity offers two symmetrical bottoms that make plug 2 22 and the extraneous passage 34 that communicates, and it is fan-shaped that the cross section of passage 34 all is.The lower end of plinth 3 is provided with the female Luer 35 with interior tube chamber, and the interior tube chamber of female Luer 35 is provided with the pod apertures 36 of the hollow cavity connection of the interior tube chamber that makes female Luer 35 perpendicular to axial direction and shell 1 near an end of shell 1.
When using present embodiment, such as Fig. 2～shown in Figure 3, seal up the upper port 11 of shell 1 in the upper end 21 of free state bottom plug 2, use is during with the syringe of straight mouthful or screw socket or other apparatus, the upper end 21 of the outer cone interface compression plug 2 by its female Luer, the breach 23 of plug 2 is so that upper end 21 bendings of plug 2, simultaneously with pressure 22 transmission toward the bottom, make its get rid of in hollow-core construction air and along surf deform, formed the upper port 11 along shell 1, the inwall of shell 1, pod apertures 36 is to a fluid passage of the interior tube chamber of female Luer 35.Simultaneously, the air in the bottom 22 of plug 2 is in communication with the outside aerofluxus by passage 34.Because plug 2 has elasticity, after having injected, plug 2 expands and resilience reseals the upper port 11 of the shell 1 of present embodiment, simultaneously because after the sealing, air in the plug 2 compression aforesaid liquid passages of resilience produces malleation, and liquid residual in the fluid passage is pushed ahead, prevent blood backflow, avoid forming thrombosis.
A kind of positive pressure needle-free connector of present embodiment is that the hollow cavity of oval-shaped shell 1 arranges cross section and is circular plug 2 at cross section, increased the gap between the inwall of the outer wall of plug 2 and shell 1, thereby improved infusion flow rate, avoided in the prior art because using the defective of the impact transfusion effects such as scuffing hemocyte that guide trough structure causes and drug residue; Simultaneously, need not to arrange on-slip rib structure on the outer wall of oval-shaped shell 1, can reach the purpose of being convenient to assemble, have simple in structurely, the characteristics such as be convenient to manufacture and reduce production costs.
The present invention still has numerous embodiments, and all employing equivalents or equivalent transformation and all technical schemes of forming all drop within protection scope of the present invention.
Claims (7)
1. positive pressure needle-free connector is characterized in that: comprise that one has the shell of hollow cavity, the cross section of described shell is oval; Be equipped with a plug with solid upper end and hollow bottom in the hollow cavity of described shell, the end face of the upper end of described plug is the plane and forms hermetically-sealed construction with the upper port of described shell, the side of the upper end of described plug is provided with the breach of at least one, and the cross section of the bottom of described plug is circular; The lower port of described shell is fixedly connected on the upper end of a plinth, the upper end of described plinth is provided with a toroidal cavity, the bottom of described plug is socketed in the described toroidal cavity, the bottom land of described toroidal cavity offers the bottom that makes described plug and the extraneous passage that communicates of at least one, the lower end of described plinth is provided with one and has the female Luer of interior tube chamber, and the interior tube chamber of described female Luer is provided with the pod apertures that the hollow cavity of an interior tube chamber that makes described female Luer perpendicular to axial direction and described shell is communicated with near an end of shell.
2. positive pressure needle-free connector according to claim 1, it is characterized in that: the inwall of described shell is provided with a positioning strip, and the outer wall of the upper end of described plinth is provided with a locating slot corresponding with described positioning strip.
3. positive pressure needle-free connector according to claim 1, it is characterized in that: the upper port of described shell has external screw thread.
4. positive pressure needle-free connector according to claim 1, it is characterized in that: the sidewall of described shell is provided with an arm that is communicated with the hollow cavity of described shell.
5. positive pressure needle-free connector according to claim 1, it is characterized in that: the upper end of described plug and bottom are formed in one.
6. positive pressure needle-free connector according to claim 1, it is characterized in that: described toroidal cavity comprises an outer ring and a boss, and described boss is divided into the two halves boss by an axial cut-outs.
7. positive pressure needle-free connector according to claim 1, it is characterized in that: the bottom land of described toroidal cavity offers two symmetrical passages, and it is fan-shaped that the cross section of described passage all is.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310033061.3A CN103071200B (en) | 2013-01-29 | 2013-01-29 | Positive-pressure needle-free connecting piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310033061.3A CN103071200B (en) | 2013-01-29 | 2013-01-29 | Positive-pressure needle-free connecting piece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103071200A true CN103071200A (en) | 2013-05-01 |
| CN103071200B CN103071200B (en) | 2014-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310033061.3A Active CN103071200B (en) | 2013-01-29 | 2013-01-29 | Positive-pressure needle-free connecting piece |
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| CN (1) | CN103071200B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103357086A (en) * | 2013-08-02 | 2013-10-23 | 苏州大学 | Positive-pressure infusion joint with fine filtration |
| CN103845791A (en) * | 2014-03-13 | 2014-06-11 | 李宜 | Indwelling catheter trace slow-release transfusion device |
| CN104815364A (en) * | 2015-04-30 | 2015-08-05 | 苏州林华医疗器械有限公司 | Needleless connection piece |
| CN104815363A (en) * | 2015-04-30 | 2015-08-05 | 苏州林华医疗器械有限公司 | Positive pressure connector |
| CN105169519A (en) * | 2015-10-28 | 2015-12-23 | 苏州鱼跃医疗科技有限公司 | Positive-pressure needle-free connecting piece |
| CN105944173A (en) * | 2016-05-27 | 2016-09-21 | 淄博嘉尚国际贸易有限公司 | A Y-shaped needless medicine adding connector |
| CN107596496A (en) * | 2017-10-31 | 2018-01-19 | 安徽赢创医疗科技有限公司 | Disposable Needleless seal transfusion joint |
| CN108030976A (en) * | 2018-01-17 | 2018-05-15 | 威海洁瑞医用制品有限公司 | Positive pressure threeway is transfused attachment device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5782816A (en) * | 1995-09-07 | 1998-07-21 | David R. Kipp | Bi-directional valve and method of using same |
| WO2001093936A1 (en) * | 2000-06-07 | 2001-12-13 | Creative Plastic Technology, Llc | Needle-less medical connector with female luer stopper |
| US20060027270A1 (en) * | 2004-08-09 | 2006-02-09 | Truitt Tim L | Connector with check valve and method of use |
| CN101879339A (en) * | 2010-07-12 | 2010-11-10 | 上海康德莱企业发展集团医疗器械有限公司 | Needleless dosing positive pressure connector |
| CN102497897A (en) * | 2009-07-30 | 2012-06-13 | 康尔福盛303公司 | Collapsible valve |
| CN202459844U (en) * | 2012-01-21 | 2012-10-03 | 上海美华医疗器具股份有限公司 | One-way positive valve |
| CN202682450U (en) * | 2012-06-19 | 2013-01-23 | 江西三鑫医疗科技股份有限公司 | Positive pressure joint capable of medicating without using needle |
| CN203169706U (en) * | 2013-01-29 | 2013-09-04 | 苏州林华医疗器械有限公司 | Positive pressure non-needle connecting piece |
-
2013
- 2013-01-29 CN CN201310033061.3A patent/CN103071200B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5782816A (en) * | 1995-09-07 | 1998-07-21 | David R. Kipp | Bi-directional valve and method of using same |
| WO2001093936A1 (en) * | 2000-06-07 | 2001-12-13 | Creative Plastic Technology, Llc | Needle-less medical connector with female luer stopper |
| US20060027270A1 (en) * | 2004-08-09 | 2006-02-09 | Truitt Tim L | Connector with check valve and method of use |
| CN102497897A (en) * | 2009-07-30 | 2012-06-13 | 康尔福盛303公司 | Collapsible valve |
| CN101879339A (en) * | 2010-07-12 | 2010-11-10 | 上海康德莱企业发展集团医疗器械有限公司 | Needleless dosing positive pressure connector |
| CN202459844U (en) * | 2012-01-21 | 2012-10-03 | 上海美华医疗器具股份有限公司 | One-way positive valve |
| CN202682450U (en) * | 2012-06-19 | 2013-01-23 | 江西三鑫医疗科技股份有限公司 | Positive pressure joint capable of medicating without using needle |
| CN203169706U (en) * | 2013-01-29 | 2013-09-04 | 苏州林华医疗器械有限公司 | Positive pressure non-needle connecting piece |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103357086A (en) * | 2013-08-02 | 2013-10-23 | 苏州大学 | Positive-pressure infusion joint with fine filtration |
| CN103845791A (en) * | 2014-03-13 | 2014-06-11 | 李宜 | Indwelling catheter trace slow-release transfusion device |
| CN103845791B (en) * | 2014-03-13 | 2017-01-11 | 广东先来医疗器械有限公司 | Indwelling catheter trace slow-release transfusion device |
| CN104815364A (en) * | 2015-04-30 | 2015-08-05 | 苏州林华医疗器械有限公司 | Needleless connection piece |
| CN104815363A (en) * | 2015-04-30 | 2015-08-05 | 苏州林华医疗器械有限公司 | Positive pressure connector |
| CN104815364B (en) * | 2015-04-30 | 2018-04-20 | 苏州林华医疗器械股份有限公司 | A kind of needleless connector |
| CN104815363B (en) * | 2015-04-30 | 2018-11-02 | 苏州林华医疗器械股份有限公司 | A kind of positive pressure connector |
| CN105169519A (en) * | 2015-10-28 | 2015-12-23 | 苏州鱼跃医疗科技有限公司 | Positive-pressure needle-free connecting piece |
| CN105944173A (en) * | 2016-05-27 | 2016-09-21 | 淄博嘉尚国际贸易有限公司 | A Y-shaped needless medicine adding connector |
| CN107596496A (en) * | 2017-10-31 | 2018-01-19 | 安徽赢创医疗科技有限公司 | Disposable Needleless seal transfusion joint |
| CN108030976A (en) * | 2018-01-17 | 2018-05-15 | 威海洁瑞医用制品有限公司 | Positive pressure threeway is transfused attachment device |
Also Published As
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| CN103071200B (en) | 2014-02-26 |
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Address after: 215101 No. 3, new road, Suzhou Industrial Park, Jiangsu, China Patentee after: SUZHOU LINHUA MEDICAL INSTRUMENT CO., LTD. Address before: 215101 No. 3, new road, Suzhou Industrial Park, Jiangsu, China Patentee before: Linhua Medical Appliances Co., Ltd., Suzhou |