CN204017143U - Counterflow-preventing positive pressure connector - Google Patents
Counterflow-preventing positive pressure connector Download PDFInfo
- Publication number
- CN204017143U CN204017143U CN201420317724.4U CN201420317724U CN204017143U CN 204017143 U CN204017143 U CN 204017143U CN 201420317724 U CN201420317724 U CN 201420317724U CN 204017143 U CN204017143 U CN 204017143U
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- China
- Prior art keywords
- silica gel
- shell
- gel plug
- base
- counterflow
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Abstract
Counterflow-preventing positive pressure connector, comprise one and there is the shell of inner chamber, large silica gel plug, base, the cross section of shell is oval, described large silica gel plug is the hollow cylindrical structure that head end is closed, the projection that the cavity of large silica gel plug tail end is placed in base head end fits tightly with it, when preventing from using, large silica gel plug horizontally slips in shell, affect liquid fluidity, shell and base adopt ultrasonic bonding to be connected, and it is characterized in that the sidewall of shell is provided with the counterflow-preventing side branch be connected with the hollow cavity of shell; The beneficial effects of the utility model are: structure is simple, easy to use, can effective liquid return when carrying out multichannel transfusion.
Description
Technical field
This utility model relates to medical medical instruments field, is specifically related to the counterflow-preventing positive pressure connector that a kind of clinical care uses.
Background technology
Positive pressure connector is a kind of infusion connector of Needleless seal, because it is extracting syringe or tube for transfusion produces malleation instantaneously, when infusion-completed pulls up the joint of syringe, effect due to negative pressure can make blood backflow in remaining needle, immobilising blood easily solidifies, blood coagulation can cause the blocking of remaining needle, next time, transfusion just cannot be carried out again, ordinary couplings also wants withdraw of the needle limit, limit to push away liquid when the withdraw of the needle, in case Hemostatic Oral Liquid is back to blocking flexible pipe in remaining needle, thus impel the medicinal liquid remaining in joint inside to continue to push ahead, more loaded down with trivial details like this, also certain experience is needed.Notification number be CN103071200A patent discloses a kind of positive pressure needle-free connector, comprise the shell that has hollow cavity, the cross section of described shell is oval; Be equipped with the plug that has solid upper end and hollow bottom in the hollow cavity of described shell, 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 described toroidal cavity, the bottom land of described toroidal cavity offers the passage that the bottom of described plug is communicated with the external world of at least one, the lower end of described plinth is provided with the female Luer that has interior tube chamber, and the interior tube chamber of described female Luer is provided with one close to one end of shell and perpendicular to axial direction makes the pod apertures that in described female Luer, tube chamber is communicated with the hollow cavity of described shell.If but above-mentioned patent is when carrying out multichannel administration, collateral easy generation medicinal liquid backflow phenomena, affects medicinal liquid flow velocity.
Utility model content
The purpose of this utility model is the more practical counterflow-preventing positive pressure connector designed to solve the problem.
This utility model solve that its technical problem takes technical measures be:
Counterflow-preventing positive pressure connector, comprise one and there is the shell of inner chamber, large silica gel plug, base, the cross section of shell is oval, described large silica gel plug is the hollow cylindrical structure that head end is closed, the projection that the cavity of large silica gel plug tail end is placed in base head end fits tightly with it, when preventing from using, large silica gel plug horizontally slips in shell, affect liquid fluidity, shell and base adopt ultrasonic bonding to be connected, and it is characterized in that the sidewall of shell is provided with the counterflow-preventing side branch be connected with the hollow cavity of shell.
Above-mentioned counterflow-preventing positive pressure connector, it is characterized in that counterflow-preventing side branch comprises base, valve casing, little silica gel plug, Bacteria-prevention cap, base is the projection of a hollow, described little silica gel plug is hollow cylindrical structure, head end entirety is in closed state, head end crown center position is provided with one and communicates and the arc opening of symmetry with inside, tail end is open state, little silica gel plug tail end is placed in the projection of base, be interference fit with pedestal lobe, guarantee the seal in infusion process, valve casing head end opening part ovalize structure, little silica gel plug is interference fit with valve casing under diastole state, valve casing is connected by ultrasonic bonding with shell.
The beneficial effects of the utility model are: structure is simple, easy to use, can effective liquid return when carrying out multichannel transfusion.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation
Fig. 2 is this utility model sectional view
Fig. 3 is the medium and small silica gel plug structural representation of this utility model
Detailed description of the invention
Counterflow-preventing positive pressure connector, comprise the shell 1 that has inner chamber, large silica gel plug 2, base 3, the cross section of shell 1 is oval, the hollow cylindrical structure that described large silica gel plug 2 is closed for head end, the projection that the cavity of large silica gel plug 2 tail end is placed in base 3 head end fits tightly with it, when preventing from using, large silica gel plug 2 horizontally slips in shell 1, affect liquid fluidity, shell 1 adopts ultrasonic bonding to be connected with base 3, it is characterized in that the sidewall of shell 1 is provided with the counterflow-preventing side branch 4 be connected with the hollow cavity of shell 1, counterflow-preventing side branch 4 comprises base 5, valve casing 6, little silica gel plug 7, Bacteria-prevention cap 8, base 5 is the projection of a hollow, little silica gel plug 7 is hollow cylindrical structure, head end entirety is in closed state, head end crown center position is provided with one and communicates and the arc opening of symmetry with inside, 9, tail end is open state, little silica gel plug 7 tail end is placed in the projection of base 5, be interference fit with base 5 projection, guarantee the seal in infusion process, valve casing 6 head end opening part ovalize structure, little silica gel plug 7 is interference fit with valve casing 6 under diastole state, valve casing 6 is connected by ultrasonic bonding with shell 1.
During concrete use, little silica gel plug 7 is withstood by female Luer, the stressed downward generation deformation of little silica gel plug 7, moving downward in process, because the elastic reactance of little silica gel plug 7 and the characteristic of its silica gel material make little silica gel plug 7 and female Luer head end remain the state of fitting tightly, when joint moves to expansion place 10 of valve casing 6 inside, due to elastic reaction, diastole opens the opening 9 at little silica gel plug 7 top, and then little silica gel plug 7 has been connected with female Luer, now liquid can flow through in little silica gel plug, after transfusion completes, extract female Luer, the upwards resilience under the effect of resilience force of little silica gel plug 7, due to valve casing 6 from the bottom to top internal cavities diminish gradually, little silica gel plug 7 head end in springback process is caused to be squeezed and to make the opening 9 of little silica gel plug 7 head end be closed into gap, thus reach the effect of sealing, prevent liquid return from overflowing.
Be more than preferred embodiment of the present utility model, all changes done according to technical solutions of the utility model, when the function produced does not exceed the scope of technical solutions of the utility model, all belong to protection of the present utility model.
Claims (2)
1. counterflow-preventing positive pressure connector, comprise one and there is the shell of inner chamber, large silica gel plug, base, the cross section of shell is oval, described large silica gel plug is the hollow cylindrical structure that head end is closed, the projection that the cavity of large silica gel plug tail end is placed in base head end fits tightly with it, when preventing from using, large silica gel plug horizontally slips in shell, affect liquid fluidity, shell and base adopt ultrasonic bonding to be connected, and it is characterized in that the sidewall of shell is provided with the counterflow-preventing side branch be connected with the hollow cavity of shell.
2. counterflow-preventing positive pressure connector according to claim 1, it is characterized in that counterflow-preventing side branch comprises base, valve casing, little silica gel plug, Bacteria-prevention cap, base is the projection of a hollow, described little silica gel plug is hollow cylindrical structure, head end entirety is in closed state, head end crown center position is provided with one and communicates and the arc opening of symmetry with inside, tail end is open state, little silica gel plug tail end is placed in the projection of base, be interference fit with pedestal lobe, guarantee the seal in infusion process, valve casing head end opening part ovalize structure, little silica gel plug is interference fit with valve casing under diastole state, valve casing is connected by ultrasonic bonding with shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420317724.4U CN204017143U (en) | 2014-06-11 | 2014-06-11 | Counterflow-preventing positive pressure connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420317724.4U CN204017143U (en) | 2014-06-11 | 2014-06-11 | Counterflow-preventing positive pressure connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204017143U true CN204017143U (en) | 2014-12-17 |
Family
ID=52057059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420317724.4U Active CN204017143U (en) | 2014-06-11 | 2014-06-11 | Counterflow-preventing positive pressure connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204017143U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104758997A (en) * | 2015-04-17 | 2015-07-08 | 南通恒泰医疗器材有限公司 | Integrated micro-resistance needle-free anti-counterflow infusion positive pressure connector |
| CN104784812A (en) * | 2015-04-29 | 2015-07-22 | 美昕医疗器械(昆山)有限公司 | Needleless sampling valve |
-
2014
- 2014-06-11 CN CN201420317724.4U patent/CN204017143U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104758997A (en) * | 2015-04-17 | 2015-07-08 | 南通恒泰医疗器材有限公司 | Integrated micro-resistance needle-free anti-counterflow infusion positive pressure connector |
| CN104784812A (en) * | 2015-04-29 | 2015-07-22 | 美昕医疗器械(昆山)有限公司 | Needleless sampling valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HENAN TUOREN MEDICAL APPLIANCES GROUP CO., LTD. Free format text: FORMER NAME: XINXIANG TUOREN MEDICAL APPLIANCES CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 453400, Henan County, Xinxiang City, Changyuan Province Meng Gang reed Garden Industrial Zone Patentee after: HENAN TUOREN MEDICAL DEVICE GROUP CO., LTD. Address before: 453400 Henan city of Xinxiang province Changyuan Mu Gang Industrial Zone a health science and Technology Industrial Park Patentee before: Xinxiang Tuoren Medical Appliances Co., Ltd. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160204 Address after: 453400 Changyuan County, Henan Province, the village of Industrial Zone Patentee after: Henan Tuoren Beisite Medical Instrument Co., Ltd. Address before: 453400, Henan County, Xinxiang City, Changyuan Province Meng Gang reed Garden Industrial Zone Patentee before: HENAN TUOREN MEDICAL DEVICE GROUP CO., LTD. |