CN103272302B - Positive pressure connector - Google Patents
Positive pressure connector Download PDFInfo
- Publication number
- CN103272302B CN103272302B CN201310209234.2A CN201310209234A CN103272302B CN 103272302 B CN103272302 B CN 103272302B CN 201310209234 A CN201310209234 A CN 201310209234A CN 103272302 B CN103272302 B CN 103272302B
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- CN
- China
- Prior art keywords
- inner shaft
- positive pressure
- guide structure
- screw guide
- pressure connector
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- 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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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The present invention relates to a kind of Novel positive-pressure joints, by the screw guide structure that interworking is arranged in the contact site of inner shaft and shell, generate local helical movement, when inner shaft being made to be restored to raw bits from compressed-bit, its speed effectively declines, it eliminates traditional positive pressure connector and commonly there is shock rebound effect, avoid negative pressure blood return.The configuration of the present invention is simple, does not increase component, and effect is obvious.
Description
Technical field
The present invention relates to a kind of medical supplies, specially positive pressure connector.
Background technique
The Preserving times such as remaining needle, central venous catheter, peripherally inserted central conduit and transfusion port are in blood of human body
The instrument of the circulatory system, can be carried out multiple dosing, avoid repeated puncture, reduces patient's pain and body injury, is the following infusion
The development trend for the treatment of.But after each infused, if directly pulling out needle tubing or conehead from indwelling instrument, it will be formed
Cavity leads to negative pressure, and blood backflow is caused to enter indwelling instrument, forms thrombus blocking, indwelling instrument is caused to scrap.
In this regard, care operation code requirement is wanted to inject when slowly pulling out needle when pulling out needle tubing, indwelling during needle is pulled out in holding
It is always positive pressure in instrument, avoids blood back, avoids blocking.And when pulling out conehead, due to loosening once retreating, it can not do at all
To slowly pulling out, positive pressure cannot keep.So can only be generally transfused by needle tubing, and pull out needle manually when there is no positive pressure connector
When need very high operation skill.
Elastic construction is set in positive pressure connector, and when pulling out conehead, elastic construction generates deformation, and volume expands, increased
Volume is greater than conehead and pulls out caused cavity, therefore pulls out conehead movement and generate positive pressure instead, is avoided that blood backflow, avoids blood
Bolt.But in the actual use of positive pressure connector, blocking probability does not improve at all, or even pulls out needle, reason not as good as manual
It is that the screen resilience of elastic construction is often larger, apparent shock rebound effect is often generated after rebound in place, it is subsequent in positive pressure
Hair generates negative pressure, leads to blood back and blocking.
Summary of the invention
In view of the above-mentioned problems, passing through screw guide structure the purpose of the present invention is to provide a kind of positive pressure connector
Guiding function makes the rebound deceleration of motion of elastic construction under the premise of not reducing screen resilience, eliminates and hits rebound effect, disappears
Except secondary negative pressure.It should be noted that shock rebound effect can also be eliminated by reducing screen resilience, but due to elastic construction with just crimp
Contact generates biggish starting force to head shell for a long time, and often will appear can not spring back.
To achieve the above object, it is achieved through the following technical solutions:
Positive pressure connector, including shell, inner shaft and elastomer, it is characterised in that: the shell medial surface and inner shaft lateral surface
It is designed with screw guide structure, when the outer shifting under elastomer effect of the inner shaft of invagination, the screw of lateral surface is drawn
Guide structure under the guidance of the screw guide structure of side, generates screw inside the shell, makes the Forward speed of entire inner shaft
Degree decline.
The inner shaft lateral surface screw guide structure is at least one salient point, screw guide structure on the inside of shell
For screw thread.
Compared with prior art, the present invention has the advantage that
1, screen resilience is not being reduced, under the premise of ensureing rebound, is reducing rebound velocity, avoided hitting rebound effect, avoid
Negative pressure blood return.
2, the design of screw guide structure is simple, for industrial common structure, does not increase production difficulty.
Detailed description of the invention
Fig. 1 is positive pressure connector overall schematic；
Fig. 2 is the positive pressure connector schematic diagram of infusion state；
Specific embodiment
The invention will be further described with reference to the accompanying drawing.
As shown in Figure 1, positive pressure connector includes shell 1, inner shaft 2 and elastomer 3, the inner wall of shell 1 has screw thread 11, inner shaft 2
Outer wall have salient point 21.
As shown in Fig. 2, be inserted into conehead 4 when infusion, the salient point 21 of inner shaft 2 is spinned retrogressing along outer casing screw 11, while interior
Axis 2 is whole to be retreated, and elastomer 3 is compressed.
When completing infusion, conehead 4 is pulled out, elastomer 3 is sprung back, and drives inner shaft 2 to move forward, since the salient point 21 of inner shaft 2 must
It must be threadingly advanced along outer casing screw 11, therefore effectively limit the integral forward lead speed of inner shaft 2, avoid shock rebound effect.
Those of ordinary skill in the art it should be appreciated that more than embodiment be used only to illustrate the present invention,
Rather than as limitation of the invention, as long as variation or modification in substantive scope of design of the invention, to above embodiments
It will all fall in scope of the presently claimed invention.
Claims (1)
1. a kind of positive pressure connector, including shell, inner shaft and elastomer, it is characterised in that: on the outside of the shell medial surface and inner shaft
Face is designed with screw guide structure, and the screw guide structure includes outside the screw thread and inner shaft of outer casing inner wall setting
The salient point of wall setting, when the outer shifting under elastomer effect of the inner shaft of invagination, the screw guide structure of lateral surface is outside
Under the guidance of the screw guide structure of shell medial surface, screw is generated, the speed of advancement of entire inner shaft is declined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310209234.2A CN103272302B (en) | 2013-05-15 | 2013-05-15 | Positive pressure connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310209234.2A CN103272302B (en) | 2013-05-15 | 2013-05-15 | Positive pressure connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103272302A CN103272302A (en) | 2013-09-04 |
| CN103272302B true CN103272302B (en) | 2019-05-14 |
Family
ID=49054989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310209234.2A Active CN103272302B (en) | 2013-05-15 | 2013-05-15 | Positive pressure connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103272302B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010091356A1 (en) * | 2009-02-07 | 2010-08-12 | Merit Medical Systems, Inc. | Valved connector |
| WO2011014265A1 (en) * | 2009-07-30 | 2011-02-03 | Medegen, Inc. | Collapsible valve |
| WO2012027386A3 (en) * | 2010-08-23 | 2012-06-28 | Imtec Biomedical Inc. | A method and system of devices for permanent access to the circulatory system for chronic hemodialysis |
| WO2012164514A2 (en) * | 2011-06-01 | 2012-12-06 | Industrie Borla S.P.A. | Injection site for tubular medical connectors |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2802432B1 (en) * | 1999-12-16 | 2002-03-08 | Vygon | AUTOMATIC SHUTTER CONNECTOR FOR CONNECTING A LIQUID INJECTION HEAD TO AN INJECTION OUTPUT |
| CN2868321Y (en) * | 2006-01-05 | 2007-02-14 | 黎阳 | Remaining needle transfusion system structure for preventing blood from back-flowing |
| CN1899633A (en) * | 2006-07-21 | 2007-01-24 | 张亚平 | Needleless seal transfusion joint |
| CN201020092Y (en) * | 2007-02-09 | 2008-02-13 | 扬州市瑞京科技发展有限公司 | Transfusion joint |
| CN201248965Y (en) * | 2008-08-27 | 2009-06-03 | 威海洁瑞医用制品有限公司 | Medical connecting device |
| CN201263811Y (en) * | 2008-09-22 | 2009-07-01 | 乐普（北京）医疗器械股份有限公司 | Positive-pressure joint for infusion without needle |
| CN201832285U (en) * | 2010-05-21 | 2011-05-18 | 成都普什医药塑料包装有限公司 | Disposable positive pressure joint |
| CN101879339B (en) * | 2010-07-12 | 2011-10-12 | 上海康德莱企业发展集团医疗器械有限公司 | Needleless dosing positive pressure connector |
| 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 |
| CN203303419U (en) * | 2013-05-15 | 2013-11-27 | 浙江康泰医疗器械有限公司 | Novel positive pressure joint |
-
2013
- 2013-05-15 CN CN201310209234.2A patent/CN103272302B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010091356A1 (en) * | 2009-02-07 | 2010-08-12 | Merit Medical Systems, Inc. | Valved connector |
| WO2011014265A1 (en) * | 2009-07-30 | 2011-02-03 | Medegen, Inc. | Collapsible valve |
| WO2012027386A3 (en) * | 2010-08-23 | 2012-06-28 | Imtec Biomedical Inc. | A method and system of devices for permanent access to the circulatory system for chronic hemodialysis |
| WO2012164514A2 (en) * | 2011-06-01 | 2012-12-06 | Industrie Borla S.P.A. | Injection site for tubular medical connectors |
| CA2837520A1 (en) * | 2011-06-01 | 2012-12-06 | Industrie Borla S.P.A. | Injection site for tubular medical connectors |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103272302A (en) | 2013-09-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Disposable positive pressure joint Effective date of registration: 20190617 Granted publication date: 20190514 Pledgee: Zhejiang Rural Commercial Bank of China branch of Limited by Share Ltd. Pledgor: ZHEJIANG KANGTAI MEDICAL DEVICES Co.,Ltd. Registration number: 2019330000160 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220617 Granted publication date: 20190514 Pledgee: Zhejiang Rural Commercial Bank of China branch of Limited by Share Ltd. Pledgor: ZHEJIANG KANGTAI MEDICAL DEVICES Co.,Ltd. Registration number: 2019330000160 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Positive pressure connector Effective date of registration: 20220729 Granted publication date: 20190514 Pledgee: Zhejiang Rural Commercial Bank of China branch of Limited by Share Ltd. Pledgor: ZHEJIANG KANGTAI MEDICAL DEVICES Co.,Ltd. Registration number: Y2022330001558 |