CN202342147U - Special syringe used for central ductus venosus - Google Patents
Special syringe used for central ductus venosus Download PDFInfo
- Publication number
- CN202342147U CN202342147U CN2011204360332U CN201120436033U CN202342147U CN 202342147 U CN202342147 U CN 202342147U CN 2011204360332 U CN2011204360332 U CN 2011204360332U CN 201120436033 U CN201120436033 U CN 201120436033U CN 202342147 U CN202342147 U CN 202342147U
- Authority
- CN
- China
- Prior art keywords
- puncture needle
- resilient bladder
- transparent conduit
- special syringe
- central
- 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
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- 230000009977 dual effect Effects 0.000 claims description 5
- 230000037361 pathway Effects 0.000 claims description 5
- 210000003462 vein Anatomy 0.000 abstract description 13
- 238000000034 method Methods 0.000 description 5
- 239000008280 blood Substances 0.000 description 4
- 210000004369 blood Anatomy 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 230000036461 convulsion Effects 0.000 description 2
- 238000002627 tracheal intubation Methods 0.000 description 2
- 206010028347 Muscle twitching Diseases 0.000 description 1
- 210000000709 aorta Anatomy 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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Abstract
The utility model discloses a special syringe used for a central ductus venosus, and belongs to the technical field of the central ductus venosus. The special syringe used for the central ductus venosus has the technical key point that the special syringe used for the central ductus venosus comprises a puncture needle, wherein the rear end of the puncture needle is connected with a transparent conduit; the rear end of the transparent conduit is connected with an elastic sacculus; the puncture needle, the transparent conduit and the elastic sacculus are successively conducted; the elastic sacculus is provided with a check valve; and the check valve causes the elastic sacculus to unidirectionally conduct from inside to outside. The utility model aims to provide a puncture device which has simple structure and is convenient to use, and the special syringe used for the central ductus venosus is used for cathetering in the central vein.
Description
Technical field
This utility model relates to a kind of special syringe, more particularly, relates in particular to a kind of special syringe that is used for central venous catheter.
Background technology
Along with the continuous development of Medical Technology, central vein puncture and intubation technology is widely used.Present various types of central vein puncture needles of usefulness clinically, its piercing method is: at first dual pathways puncture needle is connected with conventional syringe or the single channel puncture needle is connected with the syringe of being with centre pipe, then through the puncture needle searching large vein that punctures; After finding large vein; Guide pipe in puncture needle is inserted seal wire, fixedly withdraws from puncture needle behind the seal wire, again with sheathed catheter on seal wire; Along seal wire conduit is sent in the large vein blood vessel; Pull out seal wire, A/C is promptly accomplished and is put pipe.Above-mentioned method is in piercing process; After syringe needle gets into large vein and since large vein be negative pressure often blood can not overflow automatically, directly influence whether the operator gets into large vein to puncture needle judgement; Therefore need inserting needle limit, operator limit to twitch the injector push-rod that connects puncture needle and make formation negative pressure in the syringe; So that after syringe needle gets into large vein, blood gets in the syringe through puncture needle under the syringe suction function, just can make the operator can make judgement.This mode of operation in actual use; The operator is owing to also will continue or be interrupted the twitch injector push-rod in inserting needle, attention can not concentrate on the process of inserting needle fully, and the precision that makes syringe needle get into large vein reduces greatly; And when twitching push rod; Also might cause the displacement of syringe needle excessive, thereby cause wearing out its hetero-organization, cause unnecessary accident; In addition, the operator uses syringe to carry out negative pressure-pumping to confirm whether syringe needle gets in this process of large vein, aspirates the grasp neither one objective standard on opportunity, relies on operator's proficiency level fully, makes the puncture risk further improve.
The utility model content
The purpose of this utility model is the deficiency to above-mentioned prior art, and a kind of special syringe that is used for central venous catheter simple in structure, easy to use is provided.
The technical scheme of this utility model is achieved in that a kind of special syringe that is used for central venous catheter; Comprise puncture needle; Wherein said puncture needle rear end is connected with transparent conduit, is connected with resilient bladder in the transparent conduit rear end, the conducting in regular turn of described puncture needle, transparent conduit and resilient bladder; On resilient bladder, be provided with check valve, check valve makes resilient bladder by interior unidirectional conducting outwardly.
Further, above-mentioned a kind of special syringe that is used for central venous catheter, described transparent conduit and resilient bladder are with the interference fit socket; Described transparent conduit also can be through being threaded with resilient bladder.
Above-mentioned a kind of special syringe that is used for central venous catheter, described puncture needle is a dual pathways puncture needle.
After this utility model adopts said structure,, check valve is set simultaneously on resilient bladder through being communicated with puncture needle and resilient bladder at conduit; Make the unidirectional from the inside to the outside conducting of resilient bladder, after the puncture needle syringe needle gets into human body skin, the extruding resilient bladder; Air in the resilient bladder is discharged from check valve, decontrol resilient bladder after, under the elastic force effect of resilient bladder, make conduit form negative pressure and can keep this state always in together with puncture needle; Thereby make the operator can not need inserting needle limit, limit pull push rod; Can focus one's attention on inserting needle, reduce the risk of inserting needle greatly, prevent the generation of contingency; Also improve simultaneously the precision of inserting needle greatly, operate also convenient.
Description of drawings
Below in conjunction with the embodiment in the accompanying drawing this utility model is done further to specify, but do not constitute any restriction this utility model.
Fig. 1 is the structural representation of this utility model.
Among the figure: puncture needle 1, transparent conduit 2, resilient bladder 3, check valve 4.
The specific embodiment
Consult shown in Figure 1ly, a kind of special syringe that is used for central venous catheter of this utility model comprises puncture needle 1, and puncture needle 1 is a dual pathways puncture needle; Be connected with transparent conduit 2 in puncture needle 1 rear end, transparent conduit 2 makes things convenient for medical personnel to observe the entering of blood, is connected with resilient bladder 3 in transparent conduit 2 rear ends, resilient bladder 3 with transparent be good, can shorten the length of transparent conduit 2, make things convenient for medical personnel to operate; Described puncture needle 1, transparent conduit 2 and resilient bladder 3 conducting in regular turn; On resilient bladder 3, be connected with check valve 4; Check valve 4 makes resilient bladder 3 by interior unidirectional conducting outwardly; The opening pressure of check valve 4 can guarantee like this that less than the pressure of human vas inner blood gas is discharged and can not be squeezed in the human body when extruding resilient bladder 3 outside check valve 4; Both can adopt interference fit to connect together between transparent conduit 2 and the resilient bladder 3, and also can adopt to be threaded.
When the special syringe that adopts this utility model carries out the central vein puncture and intubation; After the syringe needle of dual pathways puncture needle thrust skin, extruding resilient bladder 3 made gas discharge from check valve 4, kept negative pressure state thereby make in transparent conduit 2 and the puncture needle 1; Make the operator when puncture, can focus one's attention on inserting needle; And need not again the push rod in the pull conventional syringes of limit inserting needle limit, and more convenient to operate, be able to concentrate owing to attention simultaneously; Convenient medical personnel seek aorta vessel, reduce the misery of bringing to patient widely.
Claims (4)
1. special syringe that is used for central venous catheter; Comprise puncture needle (1), it is characterized in that described puncture needle (1) rear end is connected with transparent conduit (2); Be connected with resilient bladder (3) in transparent conduit (2) rear end; Described puncture needle (1), transparent conduit (2) and resilient bladder (3) conducting in regular turn are provided with check valve (4) on resilient bladder (3), check valve (4) makes resilient bladder (3) by interior unidirectional conducting outwardly.
2. a kind of special syringe that is used for central venous catheter according to claim 1 is characterized in that, described transparent conduit (2) and resilient bladder (3) are with the interference fit socket.
3. a kind of special syringe that is used for central venous catheter according to claim 1 is characterized in that, described transparent conduit (2) and resilient bladder (3) are through being threaded.
4. according to claim 1 or 2 or 3 described a kind of special syringes that are used for central venous catheter, it is characterized in that described puncture needle (1) is a dual pathways puncture needle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204360332U CN202342147U (en) | 2011-11-04 | 2011-11-04 | Special syringe used for central ductus venosus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204360332U CN202342147U (en) | 2011-11-04 | 2011-11-04 | Special syringe used for central ductus venosus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202342147U true CN202342147U (en) | 2012-07-25 |
Family
ID=46531166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204360332U Expired - Fee Related CN202342147U (en) | 2011-11-04 | 2011-11-04 | Special syringe used for central ductus venosus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202342147U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104905965A (en) * | 2015-06-29 | 2015-09-16 | 北京大学深圳医院 | Closed dosing device |
| CN117322972A (en) * | 2023-11-03 | 2024-01-02 | 天津大学 | A bleeding-free rapid percutaneous puncture device |
-
2011
- 2011-11-04 CN CN2011204360332U patent/CN202342147U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104905965A (en) * | 2015-06-29 | 2015-09-16 | 北京大学深圳医院 | Closed dosing device |
| CN117322972A (en) * | 2023-11-03 | 2024-01-02 | 天津大学 | A bleeding-free rapid percutaneous puncture device |
| CN117322972B (en) * | 2023-11-03 | 2024-04-30 | 天津大学 | A bleeding-free rapid percutaneous puncture device |
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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: 20120725 Termination date: 20141104 |
|
| EXPY | Termination of patent right or utility model |