CN102319476A - Special injector for central venous catheter - Google Patents
Special injector for central venous catheter Download PDFInfo
- Publication number
- CN102319476A CN102319476A CN201110231826A CN201110231826A CN102319476A CN 102319476 A CN102319476 A CN 102319476A CN 201110231826 A CN201110231826 A CN 201110231826A CN 201110231826 A CN201110231826 A CN 201110231826A CN 102319476 A CN102319476 A CN 102319476A
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- China
- Prior art keywords
- syringe
- central venous
- push rod
- venous catheter
- special
- Prior art date
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- 230000009977 dual effect Effects 0.000 claims description 8
- 230000037361 pathway Effects 0.000 claims description 8
- 210000003462 vein Anatomy 0.000 description 12
- 238000000034 method Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 3
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 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
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The invention discloses a special injector for a central venous catheter, which belongs to the technical field of central venous catheterization and has the main technical scheme of comprising a needle tube, wherein a piston is arranged in the needle tube, a push rod is connected with the back end of the piston, at least one positioning notch is arranged on the side wall of the push rod in the length direction, a positioning baffle plate corresponding to the positioning notch is arranged on the back end surface of the needle tube. The invention aims at providing the special injector for the central venous catheter, which has the advantages that the structure is simple, the use is convenient, and the safety is better. The special injector for the central venous catheter is used for the central venous catheterization.
Description
Technical field
The present invention relates to a kind of syringe, more particularly, relate in particular to a kind of special syringe that is used for central venous catheter.
Background technology
Along with the continuous development of science and technology, central vein puncture and intubation technology is widely used.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 band centre pipe, then through the puncture needle searching large vein that punctures, find large vein after; 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.
Summary of the invention
The object of the invention provides a kind of property simple in structure, easy to use, safe to be used for the special syringe of central venous catheter preferably in the deficiency to above-mentioned prior art.
Technical scheme of the present invention is achieved in that a kind of special syringe that is used for central venous catheter; Comprise syringe; In syringe, be provided with piston; Be connected with push rod at piston rear end, be provided with at least one locating notch along its length on the wherein said push rod sidewall, on the back end of syringe face, be provided with and the corresponding positioning baffle of locating notch.
The above-mentioned special syringe that is used for central venous catheter, described positioning baffle and back end of syringe face facing surfaces are provided with positioning rotating shaft, and positioning rotating shaft is hinged on the back end of syringe face.
The above-mentioned special syringe that is used for central venous catheter, the quantity of described locating notch are 1～6.
The above-mentioned special syringe that is used for central venous catheter, described positioning baffle have one or two, are symmetricly set on respectively on the back end of syringe face of push rod both sides.
The above-mentioned special syringe that is used for central venous catheter, the cross section of said push rod are cross, and described locating notch is separately positioned on four support bars of push rod along its length.
The above-mentioned special syringe that is used for central venous catheter, described syringe front end is connected with dual pathways puncture needle.
The above-mentioned special syringe that is used for central venous catheter, described syringe front end is connected with the single channel puncture needle, in syringe, is provided with the conduit that is communicated with the single channel puncture needle, on piston and push rod, is equipped with the through hole that adapts with conduit.
After the present invention adopted said structure, through locating notch is set on push rod, the positioning baffle that adapts at the setting of back end of syringe face and locating notch simultaneously made push rod after pulling out certain distance, is fastened on the positioning baffle after can rotating.Owing to after piercing needle gets into human body skin, do not have air in the human body soft tissue.Therefore, after syringe needle gets into skin, push rod is pulled out backward and cooperated with positioning baffle through locating notch; Make to form negative pressure in the syringe and can keep this state always, 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 the precision of inserting needle simultaneously greatly, operate also convenient.
Description of drawings
Below in conjunction with the embodiment in the accompanying drawing the present invention is done further detailed description, but do not constitute any restriction of the present invention.
Fig. 1 is the structural representation of the specific embodiment of the invention 1;
Fig. 2 is the user mode sketch map of the specific embodiment of the invention 1;
Fig. 3 is the local enlarged diagram at A place among Fig. 2;
Fig. 4 is the cutaway view at B-B place among Fig. 2;
Fig. 5 is positioning baffle and a locating notch separated structures sketch map among Fig. 4;
Fig. 6 is the structural representation of the specific embodiment of the invention 2;
Fig. 7 is the structural representation of the specific embodiment of the invention 3;
Fig. 8 is the structural representation of the specific embodiment of the invention 4;
Fig. 9 is the user mode sketch map of the specific embodiment of the invention 4.
Among the figure: syringe 1, piston 2, push rod 3, locating notch 4, positioning baffle 5, positioning rotating shaft 6, dual pathways puncture needle 7, single channel puncture needle 8, conduit 9, through hole 10.
The specific embodiment
Consult Fig. 1 to shown in Figure 5; A kind of special syringe that is used for central venous catheter of the present invention comprises syringe 1, and (syringe 1 also can be connected with dual pathways puncture needle 7 through one section pipeline to be connected with dual pathways puncture needle 7 at syringe 1 front end; The puncture procedure of can being more convenient for like this); Dual pathways puncture needle 7 in the present embodiment is the Y type, in syringe 1, is provided with piston 2, is connected with push rod 3 in piston 2 rear ends; The cross section of push rod 3 is a cross; On four support bars of push rod 3, be evenly equipped with three locating notches 4 along its length respectively, the spacing between each locating notch 4 and the opening degree of depth of each locating notch 4 are decided as the case may be, wherein are provided with positioning baffle 5 on syringe 1 rear end face of a side at push rod 3; On positioning baffle 5 and syringe 1 rear end face facing surfaces, be provided with positioning rotating shaft 6, positioning rotating shaft 6 is hinged on syringe 1 rear end face; Positioning baffle 5 blocks packing into of piston 2 for preventing it when assembled syringe, can before use it be rotated to the outside, when needs carry out push rod 3 location, again it is rotated to the inboard, the convenient installation and use.
When adopting special syringe of the present invention to carry out the central vein puncture and intubation, the syringe needle of dual pathways puncture needle 7 thrust skin after, spur push rod 3 backward; As the case may be push rod 3 is pulled out certain distance and make one of them locating notch 4 on the push rod 3 corresponding, rotate push rod 3 then, positioning baffle 5 is fastened in the locating notch 4 with positioning baffle 5; Since action of negative pressure in the syringe 1, push rod 3 meetings past interior tension under the effect of pressure, thus positioning baffle 5 is clamped in the locating notch 4; Keep negative pressure state in the syringe 1 thereby make, make the operator when puncture, can focus one's attention on inserting needle, and need not limit inserting needle limit pull push rod 3 again; More convenient to operate; Because attention is able to concentrate, convenient medical personnel seek aorta vessel, reduce the misery of bringing to patient widely simultaneously.
Consult shown in Figure 6; A kind of special syringe that is used for central venous catheter of the present invention, its structure and embodiment 1 are basic identical, and difference is; On four support bars of push rod 3, be respectively equipped with a locating notch 4, and each locating notch 4 is positioned on the sustained height.Its method for using is identical with embodiment 1.
Consult shown in Figure 7; A kind of special syringe that is used for central venous catheter of the present invention, its structure and embodiment 1 are basic identical, and difference is; On four support bars of push rod 3, be respectively equipped with six locating notches 4; So that can make things convenient for the size of controlled pressure when taking out negative pressure, on syringe 1 rear end face of push rod 3 both sides, be equipped with positioning baffle 5, this structure can be so that fixing more firm to push rod 3.Its method for using is identical with embodiment 1.
Consult Fig. 8 and shown in Figure 9; A kind of special syringe that is used for central venous catheter of the present invention; Its structure and embodiment 1 are basic identical, and difference is that (syringe 1 also can be connected with single channel puncture needle 8 through one section pipeline to be connected with single channel pricker 8 at syringe 1 front end; Can play the purpose that makes things convenient for puncture procedure equally), single channel puncture needle 8 is common linear type puncture needle; In syringe 1, be provided with the conduit 9 that is communicated with single channel puncture needle 8, on piston 2 and push rod 3, be equipped with the through hole 10 that adapts with conduit 9; Simultaneously on syringe 1 rear end face of push rod 3 both sides, be equipped with positioning baffle 5, the overall structure that positioning baffle 5 and positioning rotating shaft 6 are formed in one, this structure can be so that more firm to fixing of push rod 3.The use of present embodiment is identical with embodiment 1, and just after puncture was accomplished, its position of advancing seal wire was at through hole 10 places of push rod 3 ends, and seal wire gets in the conduits 9 along through hole 10, again from conduit 9 to single channel puncture needle 8 last entering the central vein blood vessel.
Claims (7)
1. special syringe that is used for central venous catheter; Comprise syringe (1); In syringe (1), be provided with piston (2), be connected with push rod (3), it is characterized in that in piston (2) rear end; Be provided with at least one locating notch (4) along its length on described push rod (3) sidewall, on syringe (1) rear end face, be provided with and the corresponding positioning baffle of locating notch (4) (5).
2. the special syringe that is used for central venous catheter according to claim 1 is characterized in that, described positioning baffle (5) is provided with positioning rotating shaft (6) with syringe (1) rear end face facing surfaces, and positioning rotating shaft (6) is hinged on syringe (1) rear end face.
3. the special syringe that is used for central venous catheter according to claim 1 is characterized in that, the quantity of described locating notch (4) is 1～6.
4. according to the arbitrary described special syringe that is used for central venous catheter of claim 1 to 3, it is characterized in that described positioning baffle (5) has two, be symmetricly set on respectively on syringe (1) rear end face of push rod (3) both sides.
5. the special syringe that is used for central venous catheter according to claim 4 is characterized in that, the cross section of said push rod (3) is a cross, and described locating notch (4) is separately positioned on four support bars of push rod (3) along its length.
6. the special syringe that is used for central venous catheter according to claim 5 is characterized in that, described syringe (1) front end is connected with dual pathways puncture needle (7).
7. the special syringe that is used for central venous catheter according to claim 5; It is characterized in that; Described syringe (1) front end is connected with single channel puncture needle (8); In syringe (1), be provided with the conduit (9) that is communicated with single channel puncture needle (8), on piston (2) and push rod (3), be equipped with the through hole (10) that adapts with conduit (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110231826A CN102319476A (en) | 2011-08-12 | 2011-08-12 | Special injector for central venous catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110231826A CN102319476A (en) | 2011-08-12 | 2011-08-12 | Special injector for central venous catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102319476A true CN102319476A (en) | 2012-01-18 |
Family
ID=45447385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110231826A Pending CN102319476A (en) | 2011-08-12 | 2011-08-12 | Special injector for central venous catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102319476A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109771743A (en) * | 2019-03-25 | 2019-05-21 | 吉林大学 | A sub-packed intravenous injection and flushing integrated syringe |
| CN109771744A (en) * | 2019-03-25 | 2019-05-21 | 吉林大学 | An integrated syringe for intravenous administration and flushing |
| JP2021112640A (en) * | 2015-04-30 | 2021-08-05 | スミスズ メディカル エーエスディー，インコーポレイティド | Vascular access device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101332325A (en) * | 2007-06-29 | 2008-12-31 | 赵菁 | Injector capable locking and fixing absorption capacity |
| CN201295453Y (en) * | 2008-12-10 | 2009-08-26 | 国立祥 | Thoracic puncture indwelling needle without additive injure |
| CN201510600U (en) * | 2009-10-19 | 2010-06-23 | 刘若楠 | Disposable microsyringe |
-
2011
- 2011-08-12 CN CN201110231826A patent/CN102319476A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101332325A (en) * | 2007-06-29 | 2008-12-31 | 赵菁 | Injector capable locking and fixing absorption capacity |
| CN201295453Y (en) * | 2008-12-10 | 2009-08-26 | 国立祥 | Thoracic puncture indwelling needle without additive injure |
| CN201510600U (en) * | 2009-10-19 | 2010-06-23 | 刘若楠 | Disposable microsyringe |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021112640A (en) * | 2015-04-30 | 2021-08-05 | スミスズ メディカル エーエスディー，インコーポレイティド | Vascular access device |
| CN109771743A (en) * | 2019-03-25 | 2019-05-21 | 吉林大学 | A sub-packed intravenous injection and flushing integrated syringe |
| CN109771744A (en) * | 2019-03-25 | 2019-05-21 | 吉林大学 | An integrated syringe for intravenous administration and flushing |
| CN109771743B (en) * | 2019-03-25 | 2024-11-29 | 吉林大学 | Split-charging type intravenous injection administration and wash pipe integrated injector |
| CN109771744B (en) * | 2019-03-25 | 2024-12-27 | 吉林大学 | An integrated syringe for intravenous drug administration and flushing |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120118 |