CN102049073B - Enclosed type blood pollution prevention detaining needle guide tube component - Google Patents
Enclosed type blood pollution prevention detaining needle guide tube component Download PDFInfo
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- CN102049073B CN102049073B CN 201010535419 CN201010535419A CN102049073B CN 102049073 B CN102049073 B CN 102049073B CN 201010535419 CN201010535419 CN 201010535419 CN 201010535419 A CN201010535419 A CN 201010535419A CN 102049073 B CN102049073 B CN 102049073B
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Abstract
The invention relates to an apparatus for leading a medium into a human body, in particular to an enclosed type blood pollution prevention detaining needle guide tube component which comprises a guide tube, a guide tube seat and an isolation component, wherein the isolation component comprises an isolation plug; and the front end of the isolation plug forms a blood return cavity with an inner cavity of the guide tube seat. The enclosed type blood pollution prevention detaining needle guide tube component has the structural points that the isolation component further comprises a blood absorption plug; and the blood absorption plug is adjacent to the rear end surface of the isolation plug and is mounted at the rear end part of the inner cavity of the guide tube seat. The enclosed type blood pollution prevention detaining needle guide tube component has the advantages that in the enclosed type detaining needle guide tube component, the blood absorption plug, which is made of medical-level materials with high liquid absorption and additionally arranged at the at the rear end of the isolation plug in the inner cavity of the guide tube seat, can absorb moisture in blood as well as be quickly expanded to form an impermeable plug; and both the blood sprayed by a blood return groove and that overflowed from a passage of the blood return cavity that is not enclosed by the isolation plug in time are completely absorbed by the blood absorption plug during the withdrawal of the needle tube, so that the problem of blood pollution during the use of a detaining needle is completely eliminated.
Description
Technical field
The present invention relates to a kind of closed remaining needle catheter component of medium being introduced apparatus, particularly a kind of capable of preventing blood from pollution in the body.
Background technology
Enclosed remaining needle includes needle tubing assembly and conduit tube component, and wherein the needle tubing assembly includes needle tubing and needle stand, and needle tubing is hollow, and its leading section has been opened the blood back groove; Conduit tube component includes conduit, catheter block, barrier assembly and the joint of extending of transparent or translucent hollow, one end of conduit is connected with catheter block, needle tubing passes the catheter block inner chamber and is plugged in the catheter lumen, barrier assembly is a kind of batching pig with certain-length, and it is installed in the catheter block inner chamber in the tight fit mode; Under the effect of batching pig, the catheter block inner chamber forms a blood back cavity before batching pig, and this blood back cavity is communicated with joint of extending.
In clinical use, after the needle tubing of hollow thrusts blood vessel, under the effect of blood pressure, must have in some blood enter needle tubing via the blood back groove on the needle tubing the cavity and be trapped in wherein, pressure in the needle lumen is equivalent to the blood pressure of human body at this moment, after the success of retained needle puncture juxtaposition pipe, the needle tubing release conduit tube component of need to dropping back, in the process of recession, in case the blood back groove of needle tubing falls back on outside the batching pig rear end face, the needle lumen external and internal pressure is unbalance, and blood wherein is easily by the ejection of blood back groove, the remaining needle problem that causes blood contamination problem, especially major diameter specification is more serious.
Being problematic in that of prior art: because the batching pig of remaining needle all is to adopt elastomeric material to make, needle tubing is when passing the catheter block inner chamber, puncture by batching pig in the compressing mode, this moment, batching pig produced the compressing distortion, forming a passage passes for needle tubing, therefore batching pig with the compressing of needle tubing outer surface Long Term Contact under formed passage can moment after needle tubing is withdrawn from conduit tube component not closed, the blood that causes being detained for the observation blood back in the blood back cavity overflows the batching pig rear end face by this passage, causes another kind of blood contamination problem.
Summary of the invention
The object of the invention is to provides a kind of closed remaining needle catheter component that can solve the capable of preventing blood from pollution of the blood contamination problem in the clinical use according to the deficiencies in the prior art part.
The present invention is achieved through the following channels:
The closed remaining needle catheter component of capable of preventing blood from pollution, include conduit, catheter block, barrier assembly and the joint of extending of hollow, one end of conduit and an end of joint of extending are connected with catheter block respectively, the needle tubing that front end is opened the blood back groove passes the catheter block inner chamber and is plugged in the catheter lumen, barrier assembly comprises a kind of batching pig, and it is installed in the catheter block inner chamber in the tight fit mode; The front end of batching pig and catheter block inner chamber form blood back cavity, and this blood back cavity is communicated with joint of extending, and its structural feature is that barrier assembly also comprises a kind of plug of sucking blood, and this plug of sucking blood is installed in the rearward end of catheter block inner chamber, are positioned at the rear end of batching pig.
The plug of sucking blood adopts the medical grade material of high imbibition to make, moisture in can absorbing blood also expands rapidly and forms fluid-tight obstruction, when remaining needle is installed, needle tubing sequentially interted the plug, batching pig, blood back cavity and puncture in conduit at last of sucking blood, in needle tubing recession process, the blood back groove of needle tubing is also sequentially by conduit, blood back cavity, batching pig, and via the plug recession of sucking blood, therefore the plug of sucking blood can absorb the blood that is overflowed by the blood back groove, even the bloodstain of needle tubing outer surface can both be absorbed cleanly, solve the blood contamination problem of coming because of the blood back troughed belt.In addition, plug can expand rapidly behind absorbing blood and form fluid-tight plug member owing to suck blood, therefore in the process of needle tubing recession, itself do not exist and leave needle tubing recession access issues, simultaneously, can also intercept blood in the blood back cavity via outside the batching pig overflow duct seat, give the sufficient closing time of batching pig, further solve the blood contamination problem that causes because of the batching pig s own situation.
The present invention can further be specially:
The jam-pack of sucking blood leans against the rear end face of batching pig;
Or suck blood to form between plug and the batching pig and hold haemocoele;
Leaving the effect of holding haemocoele comprises: at first can provide headspace for the expansion of the plug of sucking blood, the space that is discharged by blood back groove or needle point is provided secondly can for the blood in the needle tubing, be convenient to suck blood the plug better absorbing blood, temporarily providing room is provided in the time of at last can also be for the blood from overflowing in the blood back cavity, gives the time of the abundant absorbing blood of plug of sucking blood.
In catheter block intracavity posterior end section, has a projection snap ring on the rear end face of the plug of sucking blood.
Fill in the restriction of self function owing to suck blood, can not as batching pig, carry out tight fit between itself and the catheter block, therefore, take out of for preventing its needle tubing of being dropped back, be preferably in thereafter and on the end face stopping means be installed.Above-mentioned projection snap ring is the simplest and easy and effective stopping means, can prevent that like this barrier assembly from deviating from catheter block, can increase again the power of deviating from of whole barrier assembly, just can sustain the higher pressure of catheter block inner chamber liquid, has made things convenient for high pressure infuser occasion.
The plug of sucking blood is opened the through hole that cooperates with the needle tubing external diameter along needle tubing puncture direction.
This through hole should be slightly larger than the needle tubing external diameter, when needle tubing is dropped back like this, can avoid the needle tubing outer wall and suck blood the plug between friction, when batching pig generation blood is excessive, sucking blood plug can absorbing blood and rapid dilatancy, this through hole is closed in expansion process, and the front end face at the plug of sucking blood forms water barrier simultaneously, prevents that the blood in the blood back cavity is excessive.
In sum, the invention provides a kind of closed remaining needle catheter component that can solve the capable of preventing blood from pollution of a series of blood contamination problems of bringing when enclosed remaining needle is removed pin, its batching pig rear end in the catheter block inner chamber increases a kind of plug of sucking blood, this plug of sucking blood adopts the medical grade material of high imbibition to make, moisture in can absorbing blood also expands rapidly and forms fluid-tight obstruction, in needle tubing recession process, no matter be the blood of blood back groove ejection, or the blood that blood back cavity overflows via the passage of batching pig and sealing, all absorb cleanly via the plug of sucking blood, stopped the blood contamination problem in the remaining needle use procedure fully.
Description of drawings
Figure 1 shows that the structural representation of the closed remaining needle catheter component of capable of preventing blood from pollution of the present invention, contain the needle tubing components.
Figure 2 shows that the structure for amplifying sketch map of A part among Fig. 1.
Below in conjunction with embodiment the present invention is described further.
Specific embodiment
Most preferred embodiment:
With reference to accompanying drawing 1 and accompanying drawing 2, the closed remaining needle catheter component of capable of preventing blood from pollution, include conduit 1, catheter block 2, barrier assembly and the joint of extending 3 of hollow, one end of conduit 1 and an end of joint of extending 3 are connected with catheter block 2 respectively, barrier assembly includes batching pig 4 and the plug 5 of sucking blood, the two all is installed in the later half end of catheter block 2 inner chambers in the tight fit mode, the plug 5 of sucking blood is positioned at the rear end face of batching pig 4, can select to abut against with batching pig 4, form an areola perhaps and between batching pig 4 rear end faces as temporary transient appearance haemocoele; The front end of batching pig 4 and catheter block 2 inner chambers form blood back cavity 6, and this blood back cavity 6 is communicated with joint of extending 3, and the plug 5 of sucking blood is opened the through hole that cooperates with the needle tubing external diameter along needle tubing puncture direction; Catheter block 2 inner chambers are positioned at the plug of sucking blood and have a projection snap ring 7 on the rear end face, can play position-limiting action to barrier assembly, prevent that barrier assembly from deviating from catheter block 2, increase the power of deviating from of whole barrier assembly.Extension tube street corner 3 is connected to transfusion overlapping joint 12 by extension tube 11.
The needle tubing assembly of remaining needle comprises needle tubing 8 and needle stand 9, needle tubing 8 is hollow, its leading section has been opened blood back groove 10, the rearward end of needle tubing 8 is installed on the needle stand 9, and the free front end of needle tubing 8 passes catheter block 2 inner chambers, sequentially interting plug 5, the batching pig 4, blood back cavity 6 of sucking blood, and puncturing in conduit 1 at last.
Its operation principle is:
After the success of retained needle puncture juxtaposition pipe, needle tubing 8 need to be withdrawn conduit tube component, under the drive of needle stand 9, the blood back groove of needle tubing sequentially withdraws from conduit 1, blood back cavity 6, batching pig 4, and via plug 5 recession of sucking blood, the plug of sucking blood can absorb the blood that is overflowed by the blood back groove, solves the blood contamination problem of coming because of the blood back troughed belt.In addition, plug can expand rapidly behind absorbing blood and form fluid-tight plug member owing to suck blood, therefore in the process of needle tubing recession, itself do not exist and leave needle tubing recession access issues, simultaneously, can also intercept blood in the blood back cavity via outside the batching pig overflow duct seat, give the sufficient closing time of batching pig, further solve the blood contamination problem that causes because of the batching pig s own situation.
It is same as the prior art that the present invention does not state part.
Claims (5)
1. the closed remaining needle catheter component of capable of preventing blood from pollution, include conduit (1), catheter block (2), barrier assembly and the joint of extending (3) of hollow, one end of one end of conduit (1) and joint of extending (3) is connected with catheter block (2) respectively, the needle tubing (8) that front end is opened the blood back groove passes catheter block (2) inner chamber and is plugged in conduit (1) chamber, barrier assembly comprises a kind of batching pig (4), and it is installed in catheter block (2) inner chamber in the tight fit mode; The front end of batching pig (4) and catheter block (2) inner chamber form blood back cavity (6), this blood back cavity (6) is communicated with joint of extending (3), it is characterized in that, barrier assembly also comprises a kind of plug (5) of sucking blood, this plug (5) of sucking blood is installed in the rearward end of catheter block (2) inner chamber, be positioned at batching pig (4) rear end, the plug (5) of sucking blood adopts the medical grade material of high imbibition to make, and the moisture in can absorbing blood also expands rapidly and forms fluid-tight obstruction.
2. the closed remaining needle catheter component of capable of preventing blood from pollution according to claim 1 is characterized in that, the plug (5) of sucking blood abuts against the rear end face of batching pig (4).
3. the closed remaining needle catheter component of capable of preventing blood from pollution according to claim 1 is characterized in that, sucks blood and leaves cavity between plug (5) and the batching pig (4), forms to hold haemocoele.
4. the closed remaining needle catheter component of capable of preventing blood from pollution according to claim 1 is characterized in that, in catheter block (2) intracavity posterior end section, has a projection snap ring (7) on the rear end face of plug (5) of sucking blood.
5. the closed remaining needle catheter component of capable of preventing blood from pollution according to claim 1 is characterized in that, the plug (5) of sucking blood is opened the through hole that cooperates with needle tubing (8) external diameter along needle tubing (8) puncture direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010535419 CN102049073B (en) | 2010-11-04 | 2010-11-04 | Enclosed type blood pollution prevention detaining needle guide tube component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010535419 CN102049073B (en) | 2010-11-04 | 2010-11-04 | Enclosed type blood pollution prevention detaining needle guide tube component |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102049073A CN102049073A (en) | 2011-05-11 |
| CN102049073B true CN102049073B (en) | 2013-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010535419 Active CN102049073B (en) | 2010-11-04 | 2010-11-04 | Enclosed type blood pollution prevention detaining needle guide tube component |
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| CN (1) | CN102049073B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9795766B2 (en) * | 2013-12-04 | 2017-10-24 | B. Braun Melsungen Ag | Catheter assembly blood control device and related methods |
| CN104941060B (en) * | 2015-06-29 | 2018-04-20 | 苏州林华医疗器械股份有限公司 | A kind of batching pig and the venous detaining needle with the batching pig |
| CN108744146B (en) * | 2018-07-04 | 2023-09-19 | 江苏苏云医疗器材有限公司 | Needle-stick-preventing remaining needle |
Citations (6)
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|---|---|---|---|---|
| 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 |
| CN101574547A (en) * | 2004-02-26 | 2009-11-11 | 尼普洛株式会社 | Safety indwelling needle |
| CN201612926U (en) * | 2010-02-08 | 2010-10-27 | 陈永曦 | Remaining needle anti-leakage isolating device |
| CN102019010A (en) * | 2010-11-04 | 2011-04-20 | 陈永曦 | Catheter assembly of enclosed remaining needle with separated isolation assembly |
| CN201855471U (en) * | 2010-11-04 | 2011-06-08 | 陈永曦 | Closed remaining needle catheter component with separate type isolation component |
| CN201855472U (en) * | 2010-11-04 | 2011-06-08 | 陈永曦 | Closed remaining needle catheter component capable of preventing blood from pollution |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4403013B2 (en) * | 2004-05-13 | 2010-01-20 | メディキット株式会社 | Indwelling needle |
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- 2010-11-04 CN CN 201010535419 patent/CN102049073B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101574547A (en) * | 2004-02-26 | 2009-11-11 | 尼普洛株式会社 | Safety indwelling needle |
| CN201612926U (en) * | 2010-02-08 | 2010-10-27 | 陈永曦 | Remaining needle anti-leakage isolating device |
| CN102019010A (en) * | 2010-11-04 | 2011-04-20 | 陈永曦 | Catheter assembly of enclosed remaining needle with separated isolation assembly |
| CN201855471U (en) * | 2010-11-04 | 2011-06-08 | 陈永曦 | Closed remaining needle catheter component with separate type isolation component |
| CN201855472U (en) * | 2010-11-04 | 2011-06-08 | 陈永曦 | Closed remaining needle catheter component capable of preventing blood from pollution |
Non-Patent Citations (1)
| Title |
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| JP特开2005-323762A 2005.11.24 |
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| CN102049073A (en) | 2011-05-11 |
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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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