CN203842114U - Venous indwelling needle - Google Patents
Venous indwelling needle Download PDFInfo
- Publication number
- CN203842114U CN203842114U CN201420212014.5U CN201420212014U CN203842114U CN 203842114 U CN203842114 U CN 203842114U CN 201420212014 U CN201420212014 U CN 201420212014U CN 203842114 U CN203842114 U CN 203842114U
- Authority
- CN
- China
- Prior art keywords
- needle
- flow regulator
- fluid injection
- venous detaining
- rolling wheel
- 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 - Fee Related
Links
- 238000002347 injection Methods 0.000 claims abstract description 18
- 239000007924 injection Substances 0.000 claims abstract description 18
- 230000001105 regulatory effect Effects 0.000 claims abstract description 12
- 239000012530 fluid Substances 0.000 claims description 16
- 239000007788 liquid Substances 0.000 abstract description 10
- 238000005096 rolling process Methods 0.000 abstract description 9
- 239000008280 blood Substances 0.000 abstract description 5
- 210000004369 blood Anatomy 0.000 abstract description 5
- 238000001802 infusion Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 210000004204 blood vessel Anatomy 0.000 abstract 1
- 239000003814 drug Substances 0.000 abstract 1
- 238000011010 flushing procedure Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model provides a venous indwelling needle which comprises a needle head assembly and a liquid injection connector assembly. The needle head assembly is connected with the liquid injection connector assembly through a catheter which is provided with a flow regulator, the flow regulator comprises a shell and a rolling wheel, a rolling wheel regulating groove is formed in one side edge of the shell in the length direction of the shell, guide rails matched with the rolling wheel in the sliding process are arranged on the inner walls, located on the two sides of the rolling wheel regulating groove, of the shell, an entry end communicated with the rolling wheel regulating groove is arranged at the lower end of the shell, and the lower ends of the guide rails tilt down and extend to the entry end. The small flow regulator is installed on the catheter, after catheter flushing or infusion is carried out, the flow regulator is shut off first, and then infusion apparatus or an injector is disconnected. When the flow regulator is shut off, liquid in the catheter can flow in the forward direction because of rolling of the rolling wheel, in this way, blood return can be avoided, and meanwhile original liquid medicine in the indwelling needle can further flow into blood vessels.
Description
Technical field
This utility model relates to a kind of transfusion medical apparatus and instruments, particularly a kind of venous detaining needle.
Background technology
Along with the progress of technology, tube for transfusion transfusion requires also more and more higher, tradition remaining needle is to install tongs additional on the conduit between needle assembly and fluid injection adapter assembly, while use, carry out sealing by tongs, but this tongs is without the function that makes medicinal liquid forward flow, and it is dead to be difficult for folder, easily causes blood back.
Summary of the invention
Technical problem to be solved in the utility model is for the deficiencies in the prior art, provides a kind of rational in infrastructure, can make the liquid in conduit produce forward flow, avoids the venous detaining needle of blood back.
Technical problem to be solved in the utility model is to realize by following technical scheme, this utility model is a kind of venous detaining needle, comprise needle assembly, fluid injection adapter assembly, between needle assembly and fluid injection adapter assembly, connect by conduit, be characterized in: flow regulator is housed on conduit.
Technical problem to be solved in the utility model can also further realize by following technical scheme, described venous detaining needle, be characterized in: described flow regulator comprises housing and roller, on housing one side, be provided with roller regulating tank along shell length direction, in the inner walls of roller regulating tank both sides, be provided with roller and coordinate the guide rail sliding, the lower end of housing is provided with the arrival end communicating with roller regulating tank, the downward-sloping arrival end that extends in bottom of above-mentioned guide rail.
Technical problem to be solved in the utility model can also further realize by following technical scheme, described venous detaining needle, be characterized in: described needle assembly comprises casing seat and puncture needle, the front end of casing seat is provided with indwelling flexible pipe, batching pig is housed in casing seat, casing seat is divided into fluid injection chamber and puncture needle needle stand chamber by batching pig, and described conduit is communicated with fluid injection chamber.
Technical problem to be solved in the utility model can also further realize by following technical scheme, described venous detaining needle, be characterized in: described fluid injection adapter assembly is provided with threeway Connection Block, on an arm of threeway Connection Block, be connected with calparine cap, another arm is provided with needleless connector, in the external port of needleless connector, has been threaded connection end cap.
Technical problem to be solved in the utility model can also further realize by following technical scheme, described venous detaining needle, be characterized in: the outer wall of described arm is provided with external screw thread, the inner port of needleless connector is provided with the female cone female Luer coordinating with external screw thread.
Technical problem to be solved in the utility model can also further realize by following technical scheme, and described venous detaining needle, is characterized in: described end cap is provided with the connecting band being connected with needleless connector.
Compared with prior art, this utility model, by fill small-sized flow regulator on conduit, after washing pipe or after transfusion, is first closed flow regulator, then is disconnected transfusion device or syringe.In the process of closing flow regulator, due to the rolling of roller, can make the liquid in conduit produce forward flow, like this, not only can avoid blood back, and can make the further intravasation of original medicinal liquid in remaining needle.Here, flow regulator is equivalent to a positive pressure connector in function, but cost ratio positive pressure connector is much lower, not only economy but also practicality.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of flow regulator.
Detailed description of the invention
Referring to accompanying drawing, further describe concrete technical scheme of the present utility model, so that those skilled in the art understands this utility model further, and do not form the restriction to its right.
With reference to accompanying drawing 1, a kind of venous detaining needle, comprise needle assembly, fluid injection adapter assembly, between needle assembly and fluid injection adapter assembly, connect by conduit 5, described needle assembly comprises casing seat 4 and puncture needle 11, and the front end of casing seat 4 is provided with indwelling flexible pipe 1, and batching pig 3 is housed in casing seat 4, casing seat 4 is divided into fluid injection chamber 2 and puncture needle needle stand chamber by batching pig 3, and described conduit 5 is communicated with fluid injection chamber 2.Described fluid injection adapter assembly is provided with threeway Connection Block 7, on an arm of threeway Connection Block 7, be connected with calparine cap 8, also can be puncture type connector, another arm is provided with needleless connector 9, in the external port of needleless connector 9, be threaded connection end cap 10, the screw thread in needleless connector 9 external port is the external screw thread coordinating with infusion utensil 6% female Luer.Needleless connector 9 is non-puncture type connector, and end cap 10 is Bacteria-prevention cap.Described end cap 10 is provided with the connecting band being connected with needleless connector 9, can prevent that end cap from taking off rear loss.
Be connected transfusion device use time, back out end cap 10, infusion set is contained in to needleless connector 9 external port can be used.
Needleless connector 9 can be connected as a single entity with arm, can be also split-type structural, and when split-type structural, the outer wall of described arm is provided with external screw thread, and the inner port of needleless connector 9 is provided with the female cone female Luer coordinating with external screw thread.
Flow regulator 6 is housed on conduit 5, and flow regulator 6 can be disclosed any flow regulator of the present invention that is applicable in prior art, and the size of flow regulator is little.Preferred flow regulator 6 structures as shown in Figure 2, comprise housing 12 and roller 13, on housing 12 1 sides, be provided with roller regulating tank along shell length direction, on housing 12 inwalls of roller regulating tank both sides, be provided with roller 13 and coordinate the guide rail 14 sliding, the lower end of housing 12 is provided with the arrival end communicating with roller regulating tank, the downward-sloping arrival end that extends in bottom of above-mentioned guide rail 13.
When assembling, roller enters in housing easily from arrival end, and enters into the guide rail 14 in housing 12 along the inclined guide rails 15 of guide rail lower end, and roller 13 moves and cannot from housing 12, come off under the supporting role of guide rail 14.Closing in the process of flow regulator 6, due to the rolling of roller 13, can make the liquid in conduit 5 produce forward flow, like this, not only can avoid blood back, and can make the further intravasation of original medicinal liquid in remaining needle.
Claims (6)
1. a venous detaining needle, comprises needle assembly, fluid injection adapter assembly, between needle assembly and fluid injection adapter assembly, connects by conduit, it is characterized in that: flow regulator is housed on conduit.
2. venous detaining needle according to claim 1, it is characterized in that: described flow regulator comprises housing and roller, on housing one side, be provided with roller regulating tank along shell length direction, in the inner walls of roller regulating tank both sides, be provided with roller and coordinate the guide rail sliding, the lower end of housing is provided with the arrival end communicating with roller regulating tank, the downward-sloping arrival end that extends in bottom of above-mentioned guide rail.
3. venous detaining needle according to claim 1, it is characterized in that: described needle assembly comprises casing seat and puncture needle, the front end of casing seat is provided with indwelling flexible pipe, batching pig is housed in casing seat, casing seat is divided into fluid injection chamber and puncture needle needle stand chamber by batching pig, and described conduit is communicated with fluid injection chamber.
4. venous detaining needle according to claim 1, it is characterized in that: described fluid injection adapter assembly is provided with threeway Connection Block, on an arm of threeway Connection Block, be connected with calparine cap, another arm is provided with needleless connector, in the external port of needleless connector, has been threaded connection end cap.
5. venous detaining needle according to claim 4, is characterized in that: the outer wall of described arm is provided with external screw thread, and the inner port of needleless connector is provided with the female cone female Luer coordinating with external screw thread.
6. venous detaining needle according to claim 4, is characterized in that: described end cap is provided with the connecting band being connected with needleless connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420212014.5U CN203842114U (en) | 2014-04-29 | 2014-04-29 | Venous indwelling needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420212014.5U CN203842114U (en) | 2014-04-29 | 2014-04-29 | Venous indwelling needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203842114U true CN203842114U (en) | 2014-09-24 |
Family
ID=51555184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420212014.5U Expired - Fee Related CN203842114U (en) | 2014-04-29 | 2014-04-29 | Venous indwelling needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203842114U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104622566A (en) * | 2015-01-23 | 2015-05-20 | 诸暨市鹏天医疗器械有限公司 | Electric snare allowing water injection |
| CN105879152A (en) * | 2015-01-26 | 2016-08-24 | 陈艳玲 | Long-handle two-way folding pipe-free rolling type backflow preventing venous indwelling needle |
| CN110141254A (en) * | 2018-02-10 | 2019-08-20 | 广西壮族自治区桂东人民医院 | Disposable controller formula blood taking needle |
-
2014
- 2014-04-29 CN CN201420212014.5U patent/CN203842114U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104622566A (en) * | 2015-01-23 | 2015-05-20 | 诸暨市鹏天医疗器械有限公司 | Electric snare allowing water injection |
| CN105879152A (en) * | 2015-01-26 | 2016-08-24 | 陈艳玲 | Long-handle two-way folding pipe-free rolling type backflow preventing venous indwelling needle |
| CN110141254A (en) * | 2018-02-10 | 2019-08-20 | 广西壮族自治区桂东人民医院 | Disposable controller formula blood taking needle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108079398A (en) | Medical infusion joint | |
| CN203842114U (en) | Venous indwelling needle | |
| CN203263917U (en) | Medical transfusion connector connected with external indwelling catheter | |
| CN105228670B (en) | The medical infusion joint plugged into non small cellCatheter | |
| CN201370832Y (en) | Disposable two-way infusion set | |
| CN203447576U (en) | Venous indwelling needle | |
| CN101869737A (en) | Pipe fitting connection mechanism for infusion set | |
| CN204337366U (en) | A kind of novel Respiratory Medicine sputum aspirator | |
| CN204121527U (en) | A kind of reverse flow resistant indwelling needle | |
| CN204428593U (en) | A kind of drainage tube | |
| CN202777252U (en) | Novel infusion device | |
| CN203027784U (en) | Adjustable tree infusion needle | |
| CN203303435U (en) | Novel pen type remaining needle | |
| CN103418048B (en) | Needleless joint | |
| CN205360221U (en) | Isobaric tube clipper of constant volume of two -chamber PICC pipe | |
| CN204563302U (en) | Connection tube is rinsed in a kind of three chambeies | |
| CN206045089U (en) | A kind of resistance bacterium positive pressure remaining needle device | |
| CN205434557U (en) | Medical transfusion system | |
| CN216755124U (en) | Heparin cap with spiral positive pressure connector | |
| CN204932435U (en) | Digestive System Department enteroclysm device | |
| CN203315440U (en) | Operation intravenous infusion set | |
| CN206473624U (en) | A kind of venous detaining needle | |
| CN209361498U (en) | A kind of infusion device | |
| CN204815088U (en) | Telescopic infusion gallows | |
| CN210728235U (en) | Disposable tube feeding infusion device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140924 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |