CN101947337B - Closed type detaining needle catheter assembly - Google Patents
Closed type detaining needle catheter assembly Download PDFInfo
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- CN101947337B CN101947337B CN 201010278207 CN201010278207A CN101947337B CN 101947337 B CN101947337 B CN 101947337B CN 201010278207 CN201010278207 CN 201010278207 CN 201010278207 A CN201010278207 A CN 201010278207A CN 101947337 B CN101947337 B CN 101947337B
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- catheter
- guide hole
- aerofluxus
- extending
- catheter block
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Abstract
The invention relates to a device for introducing a medium into a body, in particular to a closed type detaining needle catheter assembly comprising a needle tube, a catheter, a catheter holder and an extending tube joint, wherein the needle tube penetrates through a catheter cavity through a centre shaft of an inner cavity of the catheter holder, and an annular gap cavity is formed between the needle tube and the catheter. The closed type detaining needle catheter assembly is structurally characterized by also comprising an exhaust guide hole, and the exhaust guide hole is arranged on the front end of the catheter holder and communicated with a blood return cavity. The invention has the advantages that the inventor provides the closed type detaining needle catheter assembly capable of enabling transfusion to be fast and convenient by overcoming the technical prejudice of the field; the exhaust guide hole communicated with the blood return cavity is arranged on the front end part of the catheter holder and communicated with an extending tube with an infusion tube during infusion, a gas inside the catheter assembly is fast exhausted to outside through the exhaust guide hole, and infusing fluid can fast enter the catheter assembly through the extending tube for the infusion simultaneously. The invention solves the problems of long-term inconvenient infusion and long waiting timeand provides powerful support for medical needle using demands against time.
Description
Technical field
The present invention relates to a kind of medium be introduced device, particularly a kind of closed remaining needle catheter component in the body.
Background technology
In the prior art, closed remaining needle catheter component includes front end and opens the needle tubing of blood back groove, transparent or translucent conduit, catheter block and joint of extending, one end of conduit is connected with catheter block, needle tubing is plugged in the catheter lumen, and between needle tubing wall and the conduit slit is arranged, form a kind of annular chamber; The inner chamber hollow of catheter block, front end leaves blood back cavity, and is connected and is communicated with joint of extending, and the rear end then is equipped with batching pig.Joint of extending, blood back cavity are by sequentially being communicated with the external world by the passage of annular chamber, blood back groove, syringe intracavity, needle point interruption-forming.In the clinical use, gas in the extension tube that is connected with the joint of extending tube for transfusion of plugging in advance, this moment extension tube, joint of extending, blood back cavity must be discharged by the passage that is in communication with the outside, and transfusion can enter extension tube, and enter blood back cavity via joint of extending, then infuse.But because in the conduit tube component, extension tube and blood back cavity only are the chamber, annulus with the extraneous passage that communicates, passage is too small, and aerofluxus is slow, also can leave the aerofluxus dead angle in the blood back cavity, affects the use of this enclosed remaining needle.Enclosed remaining needle also has a kind of structure, and it adopts the needle tubing without the blood back groove, and this remaining needle exhaust passage is less, and the gas outlet is airtight live almost, and it is more inconvenient to use.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part and provide a kind of easy to use, the closed remaining needle catheter component of smooth gas discharge.
Closed remaining needle catheter component of the present invention is realized by following approach:
Closed remaining needle catheter component, include needle tubing, conduit, catheter block and joint of extending, one end of conduit is connected with catheter block, needle tubing interts in catheter lumen via catheter block inner chamber axis, and form the chamber, annulus between the conduit, the inner chamber hollow of catheter block, the inner chamber front end leaves blood back cavity, is communicated with conduit, and the rear end is equipped with batching pig, joint of extending is installed in the catheter block front end, be communicated with blood back cavity, its structural feature is, also includes an aerofluxus guide hole, it is installed in the catheter block front end, and is communicated with blood back cavity.
During use, the extension tube that connects by the joint of extending tube for transfusion of plugging into can be discharged by the aerofluxus guide hole extraneously along with the gas of extension tube, catheter block inner chamber, and transfusion enters extension tube smoothly, and arrives blood back cavity.Like this, no matter enclosed remaining needle adopts with the blood back groove or does not have the needle tubing of blood back groove, and special-purpose aerofluxus guide hole can be got rid of rapidly the air in extension tube and the conduit tube component so that transfusion can be fast, carry out easily.
Original enclosed remaining needle has been reserved with the passage that communicates with the external world in design, be convenient in the process of transfusion the gas in the conduit tube component be discharged the external world, so that transfusion can enter extension tube under external pressure, arrives blood back cavity.Such design intrinsic existence in more than ten years long-time, to such an extent as to those skilled in the art this for a long time in, do not go to consider to establish in addition the possibility of exhaust passage to form in the course of time technology prejudice.Designer of the present invention has broken through the technology prejudice of this technical field, in the conduit tube component of enclosed remaining needle, increased the aerofluxus guide hole, solution is inconvenient aspect for a long time transfusion, and the problem that the waiting time is long provides strong support for what race against time on medical with the pin demand.
The present invention can further be specially:
The aerofluxus barrier film is installed on the aerofluxus guide hole.Or:
In the aerofluxus guide hole venting plug is installed, it is made every the liquid material by ventilative.
No matter be aerofluxus barrier film or venting plug, all need to possess good breathability and every fluidity, guarantee aerofluxus smooth and easy, quick, simultaneously so that transfusion can not go out from this aerofluxus guide hole seepage.Optimal choice is the medical material that adopts permeable watertight, automatic airtight in a minute behind the chance water, and in infusion process, this aerofluxus guide hole just can be fully airtight, do not affect the carrying out of transfusion like this.
Can be: the area of section of venting plug be greater than the interior area of section of aerofluxus guide hole, and venting plug just is installed in the aerofluxus guide hole in friction tight mode like this.
Can also be: the outlet end at the aerofluxus guide hole be provided with protruding snap ring, with the front end of venting plug clamp at this snap ring, guarantees the fastening installation of venting plug in the aerofluxus guide hole, can not deviate from.
The present invention can also further be specially:
The interior area of section of aerofluxus guide hole is greater than the interior area of section of extension tube.
Like this, can so that the air in conduit tube component and the extension tube discharge from the aerofluxus guide hole faster.
The axis of aerofluxus guide hole and the axis of catheter block have angle, and are symmetrically distributed in the dual-side of catheter block with joint of extending.
The installation of aerofluxus guide hole should not affect the normal use of enclosed remaining needle, therefore best mode be its axial plane that axial plane and joint of extending arranged at grade.
Better mode is that the connectivity part of aerofluxus guide hole and catheter block is the extension point of joint of extending axis and the junction point of catheter block inwall.
The aerofluxus most critical of enclosed remaining needle is the aerofluxus in the joint of extending, and the position arrangement of above-mentioned aerofluxus guide hole can make the air in extension tube and the joint of extending can discharge with the fastest speed extraneous.
Simultaneously, the height of aerofluxus guide hole should be less than the height of joint of extending.Under the installation prerequisite that guarantees venting plug, the height of aerofluxus guide hole should be the smaller the better.
In sum, the invention provides and a kind ofly can make the quick and easy closed remaining needle catheter component of transfusion, those skilled in the art overcome technology prejudice, at the leading section of catheter block the aerofluxus guide hole have been installed, and are communicated with blood back cavity in the catheter block inner chamber.When transfusion, be communicated with extension tube with tube for transfusion, gas in the conduit tube component is discharged rapidly extraneous via the aerofluxus guide hole, this moment, transfusion can enter in the conduit tube component via extension tube rapidly, infuse, solution is inconvenient aspect for a long time transfusion, and the problem that the waiting time is long provides strong support for what race against time on medical with the pin demand.
Description of drawings
Figure 1 shows that the structural representation of closed remaining needle catheter component of the present invention;
Below in conjunction with embodiment the present invention is described further
The specific embodiment
Most preferred embodiment
With reference to accompanying drawing 1, closed remaining needle catheter component includes needle tubing 1, conduit 2, catheter block 3, joint of extending 4 and aerofluxus guide hole 5,
One end of conduit 2 is connected with catheter block 3, and needle tubing 1 interts in conduit 2 chambeies via catheter block 3 inner chamber axis, and forms the chamber, annulus between the conduit 2, the inner chamber hollow of catheter block 3, the inner chamber front end leaves blood back cavity 9, is communicated with conduit 2, and the rear end is equipped with batching pig 8; Joint of extending 4 connects extension tube 7, and it is installed in catheter block 3 front ends, is communicated with blood back cavity 9.
Aerofluxus guide hole 5 is installed on the junction point of the extension point of joint of extending 4 axis and catheter block 3 another sidewalls, be distributed in the both sides of catheter block 3 with joint of extending 4 is symmetrical with catheter block 3, simultaneously, the interior area of section of aerofluxus guide hole 5 is greater than the interior area of section of extension tube 7;
Be equipped with in the aerofluxus guide hole 5 and the friction tight venting plug 6 of guide hole 5 internal diameters, the area of section of venting plug 6 is greater than the interior area of section of aerofluxus guide hole 5 at this moment, simultaneously, rear side at venting plug 6, be positioned on the medial wall of aerofluxus guide hole 5 and be provided with protruding snap ring 10, can further guarantee being fastenedly connected of venting plug 6 and aerofluxus guide hole 5.
It is a kind of cylindrical that aerofluxus guide hole 5 can be, or vertebral body, and the axis of its axis and catheter block 3 has angle, and can be the right angle, namely is installed on the catheter block 3 with vertical mode.
During use, tube for transfusion and extension tube 7 are plugged into, open transfuse switch, depress outside, gas in the conduit tube component is discharged rapidly extraneous via the aerofluxus guide hole, this moment, transfusion can enter in the conduit tube component via extension tube rapidly, infused, general needs tens seconds, or even several seconds time got final product.
It is same as the prior art that the present embodiment is not stated part.
Claims (8)
1. closed remaining needle catheter component, include needle tubing (1), conduit (2), catheter block (3) and joint of extending (4), one end of conduit (2) is connected with catheter block (3), needle tubing (1) interts in conduit (2) chamber via catheter block (3) inner chamber axis, and form the chamber, annulus between the conduit (2), the inner chamber hollow of catheter block (3), the inner chamber front end leaves blood back cavity (9), be communicated with conduit (2), the rear end is equipped with batching pig (8), joint of extending (4) is installed in catheter block (3) front end, and connection extension tube (7), be communicated with blood back cavity (9), it is characterized in that, also include an aerofluxus guide hole (5), it is installed in catheter block (3) front end, and be communicated with blood back cavity (9), simultaneously, the interior area of section of aerofluxus guide hole (5) is greater than the interior area of section of extension tube (7).
2. closed remaining needle catheter component according to claim 1 is characterized in that, the upper aerofluxus barrier film of installing of aerofluxus guide hole (5), and it covers the transverse section of aerofluxus guide hole.
3. closed remaining needle catheter component according to claim 1 is characterized in that, venting plug (6) is installed in the aerofluxus guide hole (5), and it is made every the liquid material by ventilative, automatic airtight in a minute behind the chance water.
4. closed remaining needle catheter component according to claim 3 is characterized in that, the area of section of venting plug (6) is greater than the interior area of section of aerofluxus guide hole (5).
5. closed remaining needle catheter component according to claim 1 is characterized in that, is provided with protruding snap ring (11) at the outlet end of aerofluxus guide hole (5), and venting plug (6) clamp are at the front end of this snap ring (10).
6. closed remaining needle catheter component according to claim 1, it is characterized in that, the axis of the axis of aerofluxus guide hole (5) and catheter block (3) has angle, and is symmetrically distributed in the dual-side of catheter block (3) with joint of extending (4).
7. according to claim 1 or 6 described closed remaining needle catheter components, it is characterized in that, aerofluxus guide hole (5) is the extension point of joint of extending (4) axis and the junction point of catheter block (3) inwall with the connectivity part of catheter block (3).
8. closed remaining needle catheter component according to claim 6 is characterized in that, the height of aerofluxus guide hole (5) is less than the height of joint of extending (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010278207 CN101947337B (en) | 2010-09-08 | 2010-09-08 | Closed type detaining needle catheter assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010278207 CN101947337B (en) | 2010-09-08 | 2010-09-08 | Closed type detaining needle catheter assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101947337A CN101947337A (en) | 2011-01-19 |
| CN101947337B true CN101947337B (en) | 2013-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010278207 Active CN101947337B (en) | 2010-09-08 | 2010-09-08 | Closed type detaining needle catheter assembly |
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| CN (1) | CN101947337B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104245017B (en) | 2011-09-02 | 2017-06-09 | 尤尼特拉克特注射器控股有限公司 | The plant mechanism at medicine conveying side Pu |
| CN103157153A (en) * | 2011-12-15 | 2013-06-19 | 广东康尔美医疗器械有限公司 | Safe venous indwelling needle used for preventing thrombus |
| KR20150030269A (en) | 2012-07-11 | 2015-03-19 | 유니트랙트 시린지 피티와이 엘티디 | Insertion mechanisms having vented fluid pathways for drug delivery pumps |
| CN103330965B (en) * | 2013-03-25 | 2015-08-05 | 南通恒泰医疗器材有限公司 | A kind of single use periphery cannula infusion device |
| CN107278158A (en) | 2014-09-29 | 2017-10-20 | 尤尼特拉克特注射器控股有限公司 | Rigid needle insertion mechanism for drug delivery pump |
| CN105435331A (en) * | 2015-12-12 | 2016-03-30 | 上海宝舜医疗器械有限公司 | Safety indwelling needle |
| CN106237455B (en) * | 2016-08-31 | 2022-09-20 | 广东龙心医疗器械有限公司 | Exhaust joint |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1245077A (en) * | 1998-08-19 | 2000-02-23 | 刘文能 | Multipurpose high-safety needle staying on vein for automatic infusion |
| CN2614685Y (en) * | 2003-04-24 | 2004-05-12 | 苏州碧迪医疗器械有限公司 | Venous retention needle capable of preventing blood from overflowing |
| CN1660453A (en) * | 2004-02-26 | 2005-08-31 | 尼普洛株式会社 | Safety indwelling needle |
| CN201356857Y (en) * | 2009-01-21 | 2009-12-09 | 威海洁瑞医用制品有限公司 | Connector pipe type positive pressure vein remaining needle |
| CN201481910U (en) * | 2009-06-25 | 2010-05-26 | 陈玉华 | Disposable safe remaining needle |
| CN201759927U (en) * | 2010-09-08 | 2011-03-16 | 陈永曦 | Sealed indwelling needle cannula assembly |
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2010
- 2010-09-08 CN CN 201010278207 patent/CN101947337B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1245077A (en) * | 1998-08-19 | 2000-02-23 | 刘文能 | Multipurpose high-safety needle staying on vein for automatic infusion |
| CN2614685Y (en) * | 2003-04-24 | 2004-05-12 | 苏州碧迪医疗器械有限公司 | Venous retention needle capable of preventing blood from overflowing |
| CN1660453A (en) * | 2004-02-26 | 2005-08-31 | 尼普洛株式会社 | Safety indwelling needle |
| CN201356857Y (en) * | 2009-01-21 | 2009-12-09 | 威海洁瑞医用制品有限公司 | Connector pipe type positive pressure vein remaining needle |
| CN201481910U (en) * | 2009-06-25 | 2010-05-26 | 陈玉华 | Disposable safe remaining needle |
| CN201759927U (en) * | 2010-09-08 | 2011-03-16 | 陈永曦 | Sealed indwelling needle cannula assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101947337A (en) | 2011-01-19 |
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Owner name: FUJIAN BESTWAY MED-MACROMOLECULE CORP. Free format text: FORMER OWNER: CHEN YONGXI Effective date: 20120723 |
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Free format text: CORRECT: ADDRESS; FROM: 350005 FUZHOU, FUJIAN PROVINCE TO: 350004 FUZHOU, FUJIAN PROVINCE |
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Effective date of registration: 20120723 Address after: Fuzhou City, Fujian province 350004 Industrial Road, Taijiang District No. 193 Baolong city square southwest side Xiaobailou 2 layer 202 Applicant after: FUJIAN BESTWAY MEDICAL POLYMER Corp. Address before: Fu Taijiang Village District of Fuzhou City, Fujian province 350005 15 3 Building No. 305 Applicant before: Chen Yongxi |
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Effective date of registration: 20230904 Granted publication date: 20130918 |
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