CN102019010A - Catheter assembly of enclosed remaining needle with separated isolation assembly - Google Patents
Catheter assembly of enclosed remaining needle with separated isolation assembly Download PDFInfo
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- CN102019010A CN102019010A CN 201010535429 CN201010535429A CN102019010A CN 102019010 A CN102019010 A CN 102019010A CN 201010535429 CN201010535429 CN 201010535429 CN 201010535429 A CN201010535429 A CN 201010535429A CN 102019010 A CN102019010 A CN 102019010A
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- China
- Prior art keywords
- catheter
- batching pig
- blood
- assembly
- catheter block
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- 238000002955 isolation Methods 0.000 title abstract description 16
- 239000008280 blood Substances 0.000 claims abstract description 77
- 210000004369 blood Anatomy 0.000 claims abstract description 77
- 230000004888 barrier function Effects 0.000 claims description 27
- 230000004308 accommodation Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 4
- 238000011109 contamination Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 3
- 230000036772 blood pressure Effects 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Landscapes
- Media Introduction/Drainage Providing Device (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention relates to an apparatus for introducing medium to the body, in particular to a catheter assembly of an enclosed remaining needle with a separated isolation assembly, which comprises a hollow catheter, a catheter base, an isolation assembly and an extension tube joint. The isolation assembly comprises a first isolation plug and a second isolation plug structurally. The second isolation plug is arranged at the rear end part of the inner cavity of the catheter base. A blood accommodation chamber is formed in the inner cavity of the catheter base between the rear end surface of the first isolation plug and the front end surface of the second isolation plug. The invention has the advantages that the catheter assembly of the enclosed remaining needle provides a separated isolation assembly and a blood accommodation chamber with front and rear isolation plugs in the isolation assembly which provides a separated accommodation space for blood overflow possibly generated in process of use of the enclosed remaining needle and provides a further isolation guarantee for blood isolation so as to avoid the problem of blood pollution.
Description
Technical field
The present invention relates to a kind ofly medium be introduced intravital apparatus, particularly a kind of enclosed type indwelling needle catheter assembly with separate type barrier assembly.
Background technology
The enclosed type 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 a hollow, and its leading section has been opened the blood back groove; Conduit tube component includes conduit, catheter block, the barrier assembly of transparent or translucent hollow and prolongs pipe joint, 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 the prolongation pipe joint.
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, when retained needle puncture and put manage successfully after, the needle tubing release conduit tube component of need 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.
Prior art problems also is: 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 needle tubing outer surface contact for a long time under the compressing formed passage can moment after needle tubing is withdrawn from conduit tube component closure, 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 objective of the invention is to provides a kind of enclosed type indwelling needle catheter assembly with separate type barrier assembly that can solve 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:
Enclosed type indwelling needle catheter assembly with separate type barrier assembly, include conduit, catheter block, the barrier assembly of hollow and prolong pipe joint, one end of one end of conduit and prolongation pipe joint is 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 first batching pig, and it is installed in the catheter block inner chamber in the tight fit mode; The front end of first batching pig and catheter block inner chamber form blood back cavity, this blood back cavity is communicated with the prolongation pipe joint, its structural feature is, barrier assembly also comprises second batching pig, it is installed in the rearward end of catheter block inner chamber, forms a kind of appearance haemocoele at the catheter block inner chamber between the front end face of the rear end face of first batching pig and second batching pig.
Formed appearance haemocoele is a closed chamber between first batching pig and second batching pig, and air pressure wherein all is to be lower than blood back cavity pressure.In clinical use, needle tubing puncture and put manage successfully after, need withdraw conduit tube component, at this moment, in a single day the blood back groove on the needle tubing enters the appearance haemocoele, the blood of syringe intracavity will be released in this appearance haemocoele by blood back groove and needle point very soon; Even it is airtight that the needle tubing passage of first batching pig is failed moment, fraction blood in the blood back cavity also can only be trapped in and hold in the haemocoele, outside can the overflow duct seat, holding haemocoele so just provides a spatial accommodation for issuable blood in the use of enclosed type remaining needle is excessive, thereby has stopped the blood contamination problem.
Between the needle point of needle tubing and the blood back groove certain distance is arranged, when removing pin, after the blood back groove entered and holds haemocoele, needle point may also be stayed in the blood back cavity, like this, needle tubing will hold passage of formation between haemocoele and the blood back cavity, but because the time is shorter, and second batching pig and needle tubing remain air-tight state, so the blood in the blood back cavity can flow to limited in the appearance haemocoele, after needle point leaves first batching pig, just can intercept blood back cavity fully and hold haemocoele.
The present invention can further be specially:
Barrier assembly also includes isolated tube, it is installed in and holds in the haemocoele, the tube chamber axis of isolated tube and the lumen shaft line parallel of catheter block, and and the catheter block internal chamber wall between be matched in clearance, the front end face of isolated tube is near first batching pig, and rear end face is near second batching pig.
Can fix the position between first batching pig and second batching pig like this, guarantee enough to hold the space of haemocoele, form separate type barrier assembly with stable structure.
Have an end cap on the rear end face of catheter block, its periphery and catheter block rear end closely cooperate along intracavity sidewall, and the rear end face of second batching pig is close on the medial surface of this end cap.
End cap can also further adopt fastening means such as bonding and catheter block to carry out affixed.End cap plays to the whole isolated assembly provides the effect that limits the position, and in use, barrier assembly can not deviate from catheter block, has also guaranteed airtight between the separate type barrier assembly.Higher transfusion liquid pressure so just can be provided, make things convenient for high pressure infuser occasion.
Second batching pig can be a kind of and the same plug spare of first batching pig, can also be:
Second batching pig is a kind of plug of sucking blood.
The plug 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, in the process of needle tubing recession, itself does not exist and leaves needle tubing recession access issues.Therefore the plug of sucking blood can absorb the blood that holds in the haemocoele, even the bloodstain of needle tubing outer surface can both be absorbed cleanly, and has also just further stopped the problem of blood contamination.
In sum, the invention provides a kind of enclosed type indwelling needle catheter assembly that can stop blood contamination problem in the remaining needle use, it provides a kind of separate type barrier assembly, a kind of appearance haemocoele with front and back batching pig is provided in barrier assembly, it provides an isolated spatial accommodation for issuable blood in the use of enclosed type remaining needle is excessive, provide further isolation guarantee for isolating blood, thereby stopped the blood contamination problem.
Description of drawings
Figure 1 shows that the structural representation with enclosed type indwelling needle catheter assembly of separate type barrier assembly 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, have the enclosed type indwelling needle catheter assembly of separate type barrier assembly, include conduit 1, catheter block 2, the barrier assembly of hollow and prolong pipe joint 3; One end of one end of conduit 1 and prolongation pipe joint 3 is connected with catheter block 2 respectively, barrier assembly includes first batching pig 4, the isolated tube 6 of second batching pig 5 and hollow, first batching pig 4 and second batching pig 5 all are installed in the later half end of catheter block 2 inner chambers in the tight fit mode, second batching pig 5 is positioned at the rear end face of first batching pig 4, and form a kind of appearance haemocoele between first batching pig 4, isolated tube 6 is installed in this appearance haemocoele, the lumen shaft line parallel of tube chamber axis and catheter block 2, and and catheter block 2 internal chamber walls between be matched in clearance, front end face is near first batching pig 4, rear end face holds haemocoele and is located in the inner chamber of this isolated tube 6 near second isolated tube 5; Has an end cap 7 on the rear end face of catheter block 2, be a kind of concave configuration, its periphery and catheter block 2 rear ends closely cooperate and fixedly connected along intracavity sidewall, the rear end face of second batching pig 5 is close on the medial surface of recessed face of this end cap 7, and the handle of needle tubing assembly can be socketed in this recessed end cap face.
The front end of first batching pig 4 and catheter block 2 inner chambers form blood back cavity 8, and this blood back cavity 8 is communicated with prolongation pipe joint 3, and when second batching pig 5 was filled in for sucking blood, it opened the through hole that cooperates with the needle tubing crest clearance along needle tubing puncture direction.Prolong pipe joint 3 and be connected to transfusion overlapping joint 13 by prolonging pipe 12.
The needle tubing assembly of remaining needle comprises needle tubing 9 and needle stand 10, needle tubing 9 is a hollow, its leading section has been opened blood back groove 11, during installation, the rearward end of needle tubing 9 is installed on the needle stand 10, and the needle point of free front end passes catheter block 2 inner chambers: interted in regular turn end cap 7, second batching pig 5, hold haemocoele (isolated tube 6), first batching pig 4, blood back cavity 8, and intert at last in conduit 1.
Its operation principle is:
When retained needle puncture and put manage successfully after, needle tubing 9 need be withdrawn conduit tube component, under the drive of needle stand 10, the blood back groove 11 of needle tubing withdraws from conduit 1 in regular turn, blood back cavity 8, first batching pig 4, hold haemocoele (isolated tube 6), and via 5 recession of second batching pig, remaining needle blood in use like this, comprise blood in the blood back cavity and the blood in the needle tubing, the capital is via first batching pig not airtight passage or needle tubing blood back groove, needle point flows to and holds in the haemocoele, this appearance haemocoele provides an isolated spatial accommodation for issuable blood in the use of enclosed type remaining needle is excessive, provide further isolation guarantee for isolating blood, thereby stopped the blood contamination problem.
If second batching pig is a kind of sucking blood when filling in, this 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 spare 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 (4)
1. the enclosed type indwelling needle catheter assembly that has the separate type barrier assembly, include conduit (1), catheter block (2), the barrier assembly of hollow and prolong pipe joint (3), one end of one end of conduit (1) and prolongation pipe joint (3) is connected with catheter block (2) respectively, the needle tubing (9) 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 first batching pig (4), and it is installed in catheter block (2) inner chamber in the tight fit mode; The front end of first batching pig (4) and catheter block (2) inner chamber form blood back cavity, this blood back cavity is communicated with prolongation pipe joint (3), it is characterized in that, barrier assembly also comprises second batching pig (5), it is installed in the rearward end of catheter block (2) inner chamber, forms a kind of appearance haemocoele at catheter block (2) inner chamber between the front end face of the rear end face of first batching pig (4) and second batching pig (5).
2. the enclosed type indwelling needle catheter assembly with separate type barrier assembly according to claim 1, it is characterized in that, barrier assembly also includes isolated tube (6), it is installed in and holds in the haemocoele, the lumen shaft line parallel of the tube chamber axis of isolated tube (6) and catheter block (2), and and catheter block (2) internal chamber wall between be matched in clearance, the front end face of isolated tube (6) is near first batching pig (4), rear end face is near second batching pig (5).
3. the enclosed type indwelling needle catheter assembly with separate type barrier assembly according to claim 1, it is characterized in that, has an end cap (7) on the rear end face of catheter block (2), its periphery and catheter block (2) rear end closely cooperates along intracavity sidewall, and the rear end face of second batching pig (5) is close on the medial surface of this end cap (7).
4. the enclosed type indwelling needle catheter assembly with separate type barrier assembly according to claim 1 is characterized in that second batching pig (5) is a kind of plug of sucking blood.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105354292A CN102019010B (en) | 2010-11-04 | 2010-11-04 | Catheter assembly of enclosed remaining needle with separated isolation assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105354292A CN102019010B (en) | 2010-11-04 | 2010-11-04 | Catheter assembly of enclosed remaining needle with separated isolation assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102019010A true CN102019010A (en) | 2011-04-20 |
| CN102019010B CN102019010B (en) | 2012-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105354292A Active CN102019010B (en) | 2010-11-04 | 2010-11-04 | Catheter assembly of enclosed remaining needle with separated isolation assembly |
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| Country | Link |
|---|---|
| CN (1) | CN102019010B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102049073A (en) * | 2010-11-04 | 2011-05-11 | 陈永曦 | Enclosed type blood pollution prevention detaining needle guide tube component |
| CN103330970A (en) * | 2013-07-25 | 2013-10-02 | 谢世庚 | Automatically-sealed thrombus-prevented venous indwelling needle and use method thereof |
| CN104740710A (en) * | 2013-12-04 | 2015-07-01 | B.布劳恩梅尔松根股份公司 | Catheter assembly blood control device and related methods |
| CN107569738A (en) * | 2017-09-26 | 2018-01-12 | 湖北楚天药业有限责任公司 | A kind of positive pressure vein remaining needle |
| WO2019019167A1 (en) * | 2017-07-28 | 2019-01-31 | 福建省百仕韦医用高分子股份有限公司 | Indwelling needle with indwelling air cavity capable of quickly observing blood return |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4904240A (en) * | 1988-06-09 | 1990-02-27 | Hoover Rocklin L | Method and apparatus for starting intravenous solutions |
| WO2000056388A2 (en) * | 1999-03-19 | 2000-09-28 | Anglo Operations Limited | Intravenous catheter insertion assembly |
| CN101316621A (en) * | 2005-10-11 | 2008-12-03 | 科维蒂恩股份公司 | Iv catheter with in-line valve and methods related thereto |
| CN201855471U (en) * | 2010-11-04 | 2011-06-08 | 陈永曦 | Closed remaining needle catheter component with separate type isolation component |
-
2010
- 2010-11-04 CN CN2010105354292A patent/CN102019010B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4904240A (en) * | 1988-06-09 | 1990-02-27 | Hoover Rocklin L | Method and apparatus for starting intravenous solutions |
| WO2000056388A2 (en) * | 1999-03-19 | 2000-09-28 | Anglo Operations Limited | Intravenous catheter insertion assembly |
| CN101316621A (en) * | 2005-10-11 | 2008-12-03 | 科维蒂恩股份公司 | Iv catheter with in-line valve and methods related thereto |
| CN201855471U (en) * | 2010-11-04 | 2011-06-08 | 陈永曦 | Closed remaining needle catheter component with separate type isolation component |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102049073A (en) * | 2010-11-04 | 2011-05-11 | 陈永曦 | Enclosed type blood pollution prevention detaining needle guide tube component |
| CN102049073B (en) * | 2010-11-04 | 2013-03-13 | 福建省百仕韦医用高分子股份有限公司 | Enclosed type blood pollution prevention detaining needle guide tube component |
| CN103330970A (en) * | 2013-07-25 | 2013-10-02 | 谢世庚 | Automatically-sealed thrombus-prevented venous indwelling needle and use method thereof |
| CN103330970B (en) * | 2013-07-25 | 2015-01-07 | 谢世庚 | Automatically-sealed thrombus-prevented venous indwelling needle and use method thereof |
| CN104740710A (en) * | 2013-12-04 | 2015-07-01 | B.布劳恩梅尔松根股份公司 | Catheter assembly blood control device and related methods |
| WO2019019167A1 (en) * | 2017-07-28 | 2019-01-31 | 福建省百仕韦医用高分子股份有限公司 | Indwelling needle with indwelling air cavity capable of quickly observing blood return |
| CN107569738A (en) * | 2017-09-26 | 2018-01-12 | 湖北楚天药业有限责任公司 | A kind of positive pressure vein remaining needle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102019010B (en) | 2012-11-21 |
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Owner name: FUJIAN BESTWAY MED-MACROMOLECULE CORP. Free format text: FORMER OWNER: CHEN YONGXI Effective date: 20120720 |
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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: 20120720 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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