CN207477755U - Central vein puncture needle - Google Patents
Central vein puncture needle Download PDFInfo
- Publication number
- CN207477755U CN207477755U CN201720471811.9U CN201720471811U CN207477755U CN 207477755 U CN207477755 U CN 207477755U CN 201720471811 U CN201720471811 U CN 201720471811U CN 207477755 U CN207477755 U CN 207477755U
- Authority
- CN
- China
- Prior art keywords
- syringe
- inner tube
- piston rod
- stainless steel
- sleeve pipe
- 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
Abstract
The utility model discloses a kind of central vein puncture needles, including syringe, piston rod and syringe needle, the hollow setting of piston rod, piston rod inner is provided with core unit in the automatic telescopic in sleeve type structure, core unit includes extension inner tube and stainless steel sleeve pipe in automatic telescopic, extend piston rod, piston successively forward and extend at the nipple of syringe in stainless steel sleeve pipe forepart, stainless steel sleeve pipe is fixedly connected with syringe nipple, stainless steel sleeve pipe rear portion extends out to form enlarged portion backward, and enlarged portion rear end is fixed with compressed spring；The forepart of extension inner tube is pierced by syringe needle；Extension inner tube rear end and the front end of compressed spring are fixedly connected with.The utility model advantage is exactly that core unit in automatic telescopic is set in piston rod; extension inner tube stretches into intravascular during puncture; increase the insertion depth of this puncture needle in the blood vessels; increase stability; syringe needle is effectively avoided to improve puncture success rate from intravascular slip, effectively avoid secondary puncture or repeatedly puncture; reduce tissue damage, it is ensured that patient safety.
Description
Technical field
The utility model is related to medical auxiliary equipment, more particularly, to a kind of central vein puncture needle.
Background technology
It is that a kind of put with puncture needle through skin penetrating is stayed in central vein that central venous puncture, which puts pipe,（Subclavian vein, neck
Internal jugular vein, femoral vein）Intracavitary, through drugs such as this input hypertonicity liquid, hyperalimentation fluids, while can be with measuring center venous blood
The method of pressure.Central vein catheter is due to the advantages that retention time is long, infusion type is extensive, conduit is elastic good, in craniocerebral injury
Play the role of in terms of the rescue of patient, quick infusion, monitoring, nutritional support immeasurable.Traditional Central venous catherization
Step is as follows：The right hand holds puncture needle and first penetrates vein first, and puncture needle then is shifted to left hand, and the right hand separately holds manograph in pressure measurement
Hole pressure measurement extracts manograph, then guiding seal wire is penetrated from pore in puncture needle, then extracts puncture needle, continues to grasp in next step
Make.The syringe needle of existing puncture needle can only penetrate 2~3mm of blood vessel, and blood vessel elasticity is larger, and puncture needle head is easily from target blood
It inside skids off, easily damages vascular wall, cause hemotoncus, increase secondary puncture difficulty；And it punctures and is caused around site of puncture repeatedly
Blood vessel, nerve damage in addition subcutaneous, mediastinal hematoma and pneumothorax can be caused, also increase aeroembolism, thrombus enters the circulatory system
Risk once aeroembolism, thrombus enter leads to pulmonary embolism in vivo, can jeopardize patients ' lives.
Invention content
The utility model aim is that providing a kind of central vein simple in structure, easy to operate, that puncture success rate is high wears
Pricker.
To achieve the above object, the utility model takes following technical proposals：
Central vein puncture needle described in the utility model is set including carrying the syringe of graduation mark, being slided by piston
Piston rod in the syringe and the Supramammillary syringe needle of syringe, the hollow setting of piston rod are plugged on, piston rod inner is set
Core unit in the automatic telescopic in sleeve type structure is equipped with, core unit includes extension inner tube and is set in institute in the automatic telescopic
The stainless steel sleeve pipe in extension inner tube is stated, the stainless steel sleeve pipe forepart is extended forward the piston rod, piston and prolonged successively
At the nipple for extending to the syringe, stainless steel sleeve pipe is fixedly connected with syringe nipple, and stainless steel sleeve pipe rear portion extends out to form expansion backward
The portion of opening, the enlarged portion rear end is fixed with the compressed spring extended horizontally forward；The forepart of the extension inner tube is pierced by not successively
Become rusty steel sleeve, syringe needle, and the length that extension inner tube extends the syringe needle is 4~8mm；Extend inner tube rear end and the compressed spring
Front end be fixedly connected with.
Positioning bar is provided on the nipple of the syringe, is provided in the pintle of the syringe needle and is matched with the positioning bar
Locating slot.
The utility model advantage is exactly that core unit in automatic telescopic is set in piston rod, and extension inner tube stretches into blood during puncture
In pipe, increase the insertion depth of this puncture needle in the blood vessels, increase stability, syringe needle is effectively avoided to be improved from intravascular slip
Puncture success rate effectively avoids secondary puncture or repeatedly punctures, reduces tissue damage, it is ensured that patient safety.Supramammillary positioning
Locating slot on muscle and pintle madial wall is fitted close, and can not only prevent syringe needle from rotating, moreover it is possible to ensure the scalene cone back of the body of needle point
To the graduation mark on syringe, and then ensure the inclined-plane of syringe needle in operation towards proximal part.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
Fig. 2 is the attachment structure schematic diagram of syringe needle pintle and syringe nipple in Fig. 1.
Specific embodiment
As shown in Figure 1 and Figure 2, central vein puncture needle described in the utility model, including carrying the syringe 1 of graduation mark, leading to
Cross the piston rod 3 and be plugged on 1 Supramammillary syringe needle 4 of syringe that piston 2 is slidably arranged in the syringe 1；Piston rod 3 is hollow to be set
It puts, pore is offered on the handle of 3 end of piston rod, facilitate insertion into seal wire, piston rod 3 is internally provided in sleeve type structure
Core unit in automatic telescopic, core unit includes extension inner tube 5 in automatic telescopic（For flexible material, such as high molecule plastic）Be arranged
Stainless steel sleeve pipe 6 in extension inner tube 5,6 forepart of stainless steel sleeve pipe extends anteriorly out piston rod 3, piston 2 and extends to successively
At the nipple of syringe 1, stainless steel sleeve pipe 6 is fixedly connected with 1 nipple of syringe by viscose glue, and 6 rear portion of stainless steel sleeve pipe extends out shape backward
Into enlarged portion 7,7 rear end of enlarged portion is fixed with the compressed spring 8 extended horizontally forward by viscose glue, and the length of compressed spring 8 is
8mm, length when being completely in compressive state are 3mm；The forepart of extension inner tube 5 is pierced by stainless steel sleeve pipe 6, syringe needle 4 successively, prolongs
Stretch inner tube 5 extend syringe needle 4 length be 5mm；Extension 5 rear end of inner tube and the front end of compressed spring 8 are fixedly connected with；During puncture, by
In by tissue resistance, 8 stress of compressed spring is in compressive state, extends inner tube 5 at this time and is retracted in syringe needle 4, treats that syringe needle 4 is inserted
Enter it is intravascular after, resistance that compressed spring 8 is subject to disappears, and extension inner tube 5 is pierced by syringe needle 4 and restores to home position, extends inner tube 5
It extend into intravascular, increases the intubating length of this puncture needle in the blood vessels, effectively avoid syringe needle 4 from intravascular abjection.
Scalene cone to ensure needle point ensures the inclined-plane of syringe needle in operation towards near back to the graduation mark on syringe
Heart end is correspondingly arranged on two positioning bars 9 on the lateral wall of 1 nipple of syringe, with 4 needle of syringe needle at 1 nipple link position of syringe
Bolt madial wall is offered to be fitted close with 9 matched locating slot of positioning bar, nipple with pintle, prevents syringe needle in place's puncture process
4 rotations.
In use, doctor holds this puncture needle sequentially passes through skin, fat and musculature by syringe needle 4, due to above-mentioned group
It is larger to knit resistance, 8 stress of compressed spring is in contraction state, extends inner tube 5 at this time and is retracted into syringe needle 4, when syringe needle 4 is inserted into
When intravascular, pressure that compressed spring 8 is subject to disappears, and 8 reset drives of compressed spring extension inner tube 5 is restored to home position, i.e.,
Extension inner tube 5 extend outward syringe needle 4 enter it is intravascular, increase syringe needle 4 penetrate endovascular length, effectively avoid syringe needle 4 from
It is intravascular to skid off, it avoids secondary puncture or repeatedly punctures, reduce tissue damage, it is ensured that patient safety.
Claims (2)
1. a kind of central vein puncture needle, the syringe including carrying graduation mark（1）, pass through piston（2）It is slidably arranged in the needle
Cylinder（1）Interior piston rod（3）Be plugged on syringe（1）Supramammillary syringe needle（4）, it is characterised in that：The piston rod（3）It is hollow
Setting, piston rod（3）It is in core unit in the automatic telescopic of sleeve type structure to be internally provided with, core unit packet in the automatic telescopic
Include extension inner tube（5）Be set in the extension inner tube（5）On stainless steel sleeve pipe（6）, the stainless steel sleeve pipe（6）Forepart to
It is preceding to extend the piston rod successively（3）, piston（2）And extend to the syringe（1）Nipple at, stainless steel sleeve pipe（6）With
Syringe（1）Nipple is fixedly connected with, stainless steel sleeve pipe（6）Rear portion extends out to form enlarged portion backward（7）, the enlarged portion（7）Rear end is consolidated
It is connected with the compressed spring extended horizontally forward（8）；The extension inner tube（5）Forepart be pierced by stainless steel sleeve pipe successively（6）, syringe needle
（4）, extend inner tube（5）Extend the syringe needle（4）Length be 4~8mm；Extend inner tube（5）Rear end and the compressed spring
（8）Front end be fixedly connected with.
2. central vein puncture needle according to claim 1, it is characterised in that：The syringe（1）Nipple on be provided with
Positioning bar（9）, the syringe needle（4）Pintle in be provided with and the positioning bar（9）Matched locating slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720471811.9U CN207477755U (en) | 2017-05-02 | 2017-05-02 | Central vein puncture needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720471811.9U CN207477755U (en) | 2017-05-02 | 2017-05-02 | Central vein puncture needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207477755U true CN207477755U (en) | 2018-06-12 |
Family
ID=62483741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720471811.9U Expired - Fee Related CN207477755U (en) | 2017-05-02 | 2017-05-02 | Central vein puncture needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207477755U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113577447A (en) * | 2021-07-30 | 2021-11-02 | 济南泽逸生物科技有限公司 | Venipuncture device and using method thereof |
-
2017
- 2017-05-02 CN CN201720471811.9U patent/CN207477755U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113577447A (en) * | 2021-07-30 | 2021-11-02 | 济南泽逸生物科技有限公司 | Venipuncture device and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180612 Termination date: 20190502 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |