CN201855472U - Closed remaining needle catheter component capable of preventing blood from pollution - Google Patents
Closed remaining needle catheter component capable of preventing blood from pollution Download PDFInfo
- Publication number
- CN201855472U CN201855472U CN2010205971536U CN201020597153U CN201855472U CN 201855472 U CN201855472 U CN 201855472U CN 2010205971536 U CN2010205971536 U CN 2010205971536U CN 201020597153 U CN201020597153 U CN 201020597153U CN 201855472 U CN201855472 U CN 201855472U
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- CN
- China
- Prior art keywords
- blood
- plug
- catheter
- batching pig
- remaining needle
- Prior art date
- 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.)
- Expired - Lifetime
Links
- 239000008280 blood Substances 0.000 title claims abstract description 124
- 210000004369 blood Anatomy 0.000 title claims abstract description 124
- 230000004888 barrier function Effects 0.000 claims description 14
- 238000000034 method Methods 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000002955 isolation Methods 0.000 abstract 8
- 238000010521 absorption reaction Methods 0.000 abstract 6
- 238000011109 contamination Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 3
- 230000036772 blood pressure Effects 0.000 description 2
- 238000005213 imbibition Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 210000004883 areola Anatomy 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
- 238000007789 sealing Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to a device for leading a medium into a human body, in particular to a closed remaining needle catheter component capable preventing blood from pollution. The closed remaining needle catheter component comprises a catheter, a catheter base and an isolation component, wherein the isolation component comprises an isolation plug; and the front end of the isolation plug and an inner cavity of the catheter base form a blood return cavity. The closed remaining needle catheter component has the structural key points that the isolation component also comprises a blood absorption plug; and the blood absorption plug is close to the rear end surface of the isolation plug and is mounted at the rear end part of the inner cavity of the catcher base. The closed remaining needle catheter component has the advantages that in the closed remaining needle catheter component, the blood absorption plug is additionally arranged at the rear end of the isolation plug in the inner cavity of the catcher base; the blood absorption plug is made of high-liquid absorption medical-level materials and can absorb the moisture in blood and quickly expand to form a watertight plug; and during the process of withdrawing a needle tube, both blood sprayed by a blood return groove and blood overflowed from a channel unsealed by the isolation plug in time in the blood return cavity are cleanly absorbed by the blood absorption plugs, thereby completely eliminating the blood pollution during the use of a remaining needle.
Description
Technical field
This utility model relates to a kind ofly introduces intravital apparatus with medium, the enclosed type indwelling needle catheter assembly that particularly a kind of resistant to blood pollutes.
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.
The utility model content
The purpose of this utility model is to provide a kind of enclosed type indwelling needle catheter assembly that can solve the resistant to blood pollution of the blood contamination problem in the clinical use according to the deficiencies in the prior art part.
This utility model is realized by following approach:
The enclosed type indwelling needle catheter assembly that resistant to blood pollutes, 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 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 the prolongation pipe joint, 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, is 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 interted the plug, batching pig, blood back cavity and puncture in conduit at last of sucking blood in regular turn, in needle tubing recession process, the blood back groove of needle tubing is also in regular turn 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 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.
This utility model 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 can also overflowing for the blood in the blood back cavity at last, gives the time of the abundant absorbing blood of plug of sucking blood.
In catheter block intracavity posterior end portion, 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, be preferably in thereafter and on the end face stopping means be installed for preventing its needle tubing of being dropped back.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 the power of deviating from of whole isolated assembly again, 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 dilatancy rapidly, 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 enclosed type indwelling needle catheter assembly that this utility model provides a kind of resistant to blood that can solve a series of blood contamination problems of bringing when the enclosed type remaining needle is removed pin to pollute, 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, still the blood that overflows via the passage of batching pig and sealing of blood back cavity, all absorb cleanly, stopped the blood contamination problem in the remaining needle use fully via the plug of sucking blood.
Description of drawings
Figure 1 shows that the structural representation of the enclosed type indwelling needle catheter assembly that resistant to blood described in the utility model pollutes, 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 this utility model is described further.
Specific embodiment
Most preferred embodiment:
With reference to accompanying drawing 1 and accompanying drawing 2, the enclosed type indwelling needle catheter assembly that resistant to blood pollutes, 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 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, form an areola perhaps and between batching pig 4 rear end faces as temporary transient appearance haemocoele with batching pig 4; 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 prolongation pipe joint 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 isolated assembly.Prolong pipe street corner 3 and be connected to transfusion overlapping joint 12 by prolonging pipe 11.
The needle tubing assembly of remaining needle comprises needle tubing 8 and needle stand 9, needle tubing 8 is a 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, interting plug 5, the batching pig 4, blood back cavity 6 of sucking blood in regular turn, and puncturing in conduit 1 at last.
Its operation principle is:
When retained needle puncture and put manage successfully after, needle tubing 8 need be withdrawn conduit tube component, under the drive of needle stand 9, the blood back groove of needle tubing withdraws from conduit 1, blood back cavity 6, batching pig 4 in regular turn, 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 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 this utility model is not stated part.
Claims (5)
1. the enclosed type indwelling needle catheter assembly that pollutes of resistant to blood, 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 (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 prolongation pipe joint (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, is positioned at batching pig (4) rear end.
2. the enclosed type indwelling needle catheter assembly that resistant to blood according to claim 1 pollutes is characterized in that the plug (5) of sucking blood abuts against the rear end face of batching pig (4).
3. the enclosed type indwelling needle catheter assembly that resistant to blood according to claim 1 pollutes is characterized in that, sucks blood and leaves cavity between plug (5) and the batching pig (4), forms to hold haemocoele.
4. the enclosed type indwelling needle catheter assembly that resistant to blood according to claim 1 pollutes is characterized in that in catheter block (2) intracavity posterior end portion, having a projection snap ring (7) on the rear end face of plug (5) of sucking blood.
5. the enclosed type indwelling needle catheter assembly that resistant to blood according to claim 1 pollutes 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 |
|---|---|---|---|
| CN2010205971536U CN201855472U (en) | 2010-11-04 | 2010-11-04 | Closed remaining needle catheter component capable of preventing blood from pollution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205971536U CN201855472U (en) | 2010-11-04 | 2010-11-04 | Closed remaining needle catheter component capable of preventing blood from pollution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201855472U true CN201855472U (en) | 2011-06-08 |
Family
ID=44101292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205971536U Expired - Lifetime CN201855472U (en) | 2010-11-04 | 2010-11-04 | Closed remaining needle catheter component capable of preventing blood from pollution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201855472U (en) |
Cited By (2)
| 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 |
| CN103239775A (en) * | 2012-02-13 | 2013-08-14 | 王治明 | Venous indwelling needle |
-
2010
- 2010-11-04 CN CN2010205971536U patent/CN201855472U/en not_active Expired - Lifetime
Cited By (3)
| 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 |
| CN103239775A (en) * | 2012-02-13 | 2013-08-14 | 王治明 | Venous indwelling needle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: FUJIAN BESTWAY MED-MACROMOLECULE CORP. Free format text: FORMER OWNER: CHEN YONGXI Effective date: 20120720 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 350005 FUZHOU, FUJIAN PROVINCE TO: 350004 FUZHOU, FUJIAN PROVINCE |
|
| TR01 | Transfer of patent right |
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 Patentee after: Fuzhou Bestway Med-Macromolecule Corp. Address before: Fu Taijiang Village District of Fuzhou City, Fujian province 350005 15 3 Building No. 305 Patentee before: Chen Yongxi |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110608 |