CN201775831U - Non-needle positive pressure enclosed infusion joint and infusion device - Google Patents
Non-needle positive pressure enclosed infusion joint and infusion device Download PDFInfo
- Publication number
- CN201775831U CN201775831U CN2010202328728U CN201020232872U CN201775831U CN 201775831 U CN201775831 U CN 201775831U CN 2010202328728 U CN2010202328728 U CN 2010202328728U CN 201020232872 U CN201020232872 U CN 201020232872U CN 201775831 U CN201775831 U CN 201775831U
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- piston body
- flat side
- annular groove
- infusion
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Abstract
The utility model provides a non-needle positive pressure enclosed infusion joint, comprising a piston body, wherein the piston body is positioned inside a shell; the end of the piston body is provided with a ring slot; a flat is arranged between the ring slot and the other end of the piston body; and one end of the flat is 1-2mm distant from the side wall of the ring slot. The utility model also provides an infusion device, wherein the infusion device is provided with the non-needle positive pressure enclosed infusion joint. In the infusion joint, one end of the flat is distant from the side wall of the ring slot, thus preventing seal rings from irregular deformation and effectively avoiding liquid leakage.
Description
Technical field
This utility model relates to technical field of medical instruments, particularly a kind of malleation Needleless seal transfusion joint.
Background technology
In the infusion treatment process, often need repeatedly syringe needle to be penetrated vein blood vessel.For fear of vein blood vessel is damaged and prevents syringe needle from causing blood clotting, people to design the malleation Needleless seal transfusion joint when vein blood vessel is extracted out.As shown in Figure 1, this malleation Needleless seal transfusion joint comprises the shell 10 of tee T shape, the piston body 20 that is positioned at shell 10 and back-moving spring 30.Piston body 20 two ends are provided with annular groove 21, are used to hold sealing ring 40.Drive sealing ring 40 by piston body 20 and in shell 10, slide, realize transfusion and positive-pressure function.At present, have a kind of malleation Needleless seal transfusion joint, the outside of its piston body 20 is provided with flat side 22, can increase the space between piston body 20 and the housing 10, increases infusion flow, but in infusion process, the phenomenon of leakage often occurs.
The utility model content
Main purpose of the present utility model provides a kind of malleation Needleless seal transfusion joint, is intended to reduce the phenomenon of leakage.
This utility model malleation Needleless seal transfusion joint comprises piston body, and described piston body is positioned at enclosure, and the termination is provided with annular groove, is provided with flat side between the described annular groove and the piston body other end, and wherein, described flat side's a end is at a distance of annular groove sidewall 1～2mm.
Preferably, described piston body is step-like setting, and described flat side's surface and described little end surfaces are tangent.
This utility model also provides a kind of infusion set, be provided with the malleation Needleless seal transfusion joint, described malleation Needleless seal transfusion joint, comprise cylindric piston body, described piston body is positioned at enclosure, and the termination is provided with annular groove, is provided with flat side between the described annular groove and the piston body other end, wherein, described flat side's a end is at a distance of annular groove sidewall 1～2mm.
Preferably, described piston body is step-like setting, and described flat side's surface and described little end surfaces are tangent.
In this utility model malleation Needleless seal transfusion joint because flat side's a end at a distance of annular groove sidewall certain distance, thereby can prevent that sealing ring from producing irregular deformation, thereby effectively avoid leakage.
Description of drawings
Fig. 1 is the structural representation of malleation Needleless seal transfusion joint in the prior art;
Fig. 2 is the structural representation of malleation Needleless seal transfusion joint in the embodiment of the present utility model.
The realization of this utility model purpose, functional characteristics and advantage will be in conjunction with the embodiments, are described further with reference to accompanying drawing.
The specific embodiment
Should be appreciated that specific embodiment described herein only in order to explanation this utility model, and be not used in qualification this utility model.
As shown in Figure 2, this utility model malleation Needleless seal transfusion joint comprises plunger piston body 20, and described piston body 20 is positioned at shell 10 inside, and the termination is provided with annular groove 21, and is provided with flat side 22 between the other end of annular groove 21 and piston body 20.This flat side's 22 a end is at a distance of annular groove 21 sidewalls one L-value distance.In one embodiment, the span of this L can be 1～2mm.Owing to be provided with flat side 22, thereby can increase the space between piston body 20 and the shell 10, increase medicinal liquid flow; And, because flat side's 22 a end is at a distance of annular groove 21 sidewall L-value distances, thereby can be in piston body 20 motor processs, replace the sealing ring 40 that is fastened in the annular groove 21, make its each several part basic uniformity of suffered external force in sliding process, thereby avoid sealing ring 40 to produce because of unbalance stress that irregular deformation causes and the inwall of shell 20 between form the slit, thereby prevent that effectively the phenomenon of leakage from taking place.
Should be noted that flat side 22 in the present embodiment is among the more embodiment of this utility model one at a distance of the distance L of annular groove 21 sidewalls, among other embodiment, also can select be provided with flat side 22, command range L and length thereof according to needed medicinal liquid flow.
With reference to Fig. 2, in one embodiment, piston body 20 is step-like setting, is provided with big end 23 and small end 24, and flat side 22 is positioned at big end 23 outsides, and the surface is surperficial tangent with small end 24.Flat side's 22 the length and the degree of depth can be provided with according to required medicinal liquid flow, and for example, in a concrete example, flat side 22 can be arranged on the middle part of big end 23, and its surface can be lower than the surface of small end 24.In another concrete example, flat side's 22 a end is at a distance of annular groove 21 1 L-value distances, and the other end connects big end 23, and flat side 22 surface and small end 24 is surperficial tangent.Because two surfaces are tangent, can obtain bigger appearance liquid space, so that more medicinal liquid passes through.
This utility model also provides a kind of infusion set, be provided with the malleation Needleless seal transfusion joint, described malleation Needleless seal transfusion joint comprises plunger piston body 20, described piston body 20 is positioned at shell 10 inside, the termination is provided with annular groove 21, the outside is provided with flat side 22, is provided with flat side 22 between the described annular groove 21 and piston body 20 other ends, and flat side's 22 a end is at a distance of annular groove L-value distance.In one embodiment, but this L value 1～2mm.
The above only is a preferred embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure transformation that utilizes this utility model description and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (4)
1. a malleation Needleless seal transfusion joint comprises piston body, and described piston body is positioned at enclosure, and the termination is provided with annular groove, is provided with flat side between the described annular groove and the piston body other end, it is characterized in that, described flat side's a end is at a distance of annular groove sidewall 1～2mm.
2. malleation Needleless seal transfusion joint as claimed in claim 1 is characterized in that described piston body is step-like setting, and the little end surfaces of described flat side's surface and step is tangent.
3. infusion set, be provided with the malleation Needleless seal transfusion joint, described malleation Needleless seal transfusion joint, comprise cylindric piston body, described piston body is positioned at enclosure, and the termination is provided with annular groove, is provided with flat side between the described annular groove and the piston body other end, it is characterized in that described flat side's a end is at a distance of annular groove sidewall 1～2mm.
4. infusion set head as claimed in claim 3 is characterized in that described piston body is step-like setting, and the little end surfaces of described flat side's surface and step is tangent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202328728U CN201775831U (en) | 2010-06-22 | 2010-06-22 | Non-needle positive pressure enclosed infusion joint and infusion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202328728U CN201775831U (en) | 2010-06-22 | 2010-06-22 | Non-needle positive pressure enclosed infusion joint and infusion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201775831U true CN201775831U (en) | 2011-03-30 |
Family
ID=43789068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202328728U Expired - Lifetime CN201775831U (en) | 2010-06-22 | 2010-06-22 | Non-needle positive pressure enclosed infusion joint and infusion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201775831U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103418048A (en) * | 2012-05-24 | 2013-12-04 | 美昕医疗器械（上海）有限公司 | Needle-free joint |
-
2010
- 2010-06-22 CN CN2010202328728U patent/CN201775831U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103418048A (en) * | 2012-05-24 | 2013-12-04 | 美昕医疗器械（上海）有限公司 | Needle-free joint |
| CN103418048B (en) * | 2012-05-24 | 2015-08-19 | 美昕医疗器械（上海）有限公司 | Needleless joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 518000 Jinhui Road, Pingshan New District, Shenzhen, Guangdong Province, No. 18 Patentee after: Shenzhen ante medical Limited by Share Ltd Address before: 518052 11 Li Shan Industrial Park, Xinghai Road, Nanshan District, Shenzhen, Guangdong. Patentee before: Shenzhen Ante Gaoke Industrial Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110330 |