CN2684845Y - Disposable low-resistance injector - Google Patents
Disposable low-resistance injector Download PDFInfo
- Publication number
- CN2684845Y CN2684845Y CN 200420020258 CN200420020258U CN2684845Y CN 2684845 Y CN2684845 Y CN 2684845Y CN 200420020258 CN200420020258 CN 200420020258 CN 200420020258 U CN200420020258 U CN 200420020258U CN 2684845 Y CN2684845 Y CN 2684845Y
- Authority
- CN
- China
- Prior art keywords
- plunger
- rod
- sealing ring
- adjusting screw
- conehead
- 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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Abstract
The utility model provides a low-resistance injector which can reduce the frictional resistance between the inner side of a syringe and a plunger and can maintain the sealing between the inner side of the syringe and the plunger. The low-resistance injector comprises a syringe body and a plunger sliding in the syringe body; the inner side of the syringe body and the plunger keep sealed; the plunger is composed of a plunger cone head and a plunger rod; a sealing ring is arranged between the plunger cone head and the plunger rod, and the plunger cone head is connected with the plunger rod through an adjusting screw rod; the adjusting screw rod is rotated to adjust the tightness of the sealing ring. After the low-resistance injector adopts the structure, the pressure generated by the plunger pushed forwards can be dispersed by the plunger cone head, the pressure of the sealing ring can be changed when the adjusting screw rod adjusts the distance between the cone head and the plunger rod, the sealing ring can become circular or flattened so that the clearance between the sealing ring and the inner side wall of the syringe body can be adjusted, and the effect of the adjustment of the tightness is reached.
Description
Technical field
This utility model belongs to a kind of medical apparatus and instruments, anesthetic puncture syringe when specifically belonging to a kind of operation.
Background technology
Generally is furnished with a glass syringe in the existing anesthesia packet, syringe has the injection tube of a cylindrical shape and is located at the interior plunger of injection tube, the shortcoming of this syringe: it needs to be made by glass, because the syringe of this kind structure, need sealing between injection tube and the plunger, make the frictional resistance between injection tube and the plunger strengthen, and along with the pressure resistance also strengthens, and the syringe that other material is made, after adopting this structure, its plunger is difficult to move in cylindrical shell, must plunger be moved with more power, glass syringe is broken easily in addition, is not easy to transportation.
Summary of the invention
Technical problem to be solved in the utility model: a kind of frictional resistance that can reduce between cylindrical shell inboard and the plunger is provided, still can keeps the lower resistance plastic injector that seals between cylindrical shell inboard and the plunger simultaneously.
In order to solve above-mentioned technical problem, this utility model adopts following technical scheme: injection with low resistance, comprise cylindrical shell and the plunger that in cylindrical shell, slides, keep sealing between cylindrical shell inboard and the plunger, plunger is made up of plunger conehead, plunger rod, be provided with sealing ring between plunger conehead, the plunger rod, the plunger conehead is connected by adjusting screw(rod) with plunger rod, rotates the tightness that adjusting screw(rod) is regulated sealing ring.After adopting this structure: suffered pressure when the plunger conehead can disperse plunger to push away forward, spacing between adjusting screw(rod) pilot plunger conehead and the plunger rod, can change the size of sealing ring pressure, make sealing ring change circle or become flat, thereby regulate the gap of sealing ring and cylindrical shell medial wall, reach the effect of regulating tightness.
This utility model also can adopt following further technical scheme, is connected with slidably plunger pin on the plunger conehead, and plunger pin slides in the groove of adjusting screw(rod), and one of adjusting screw(rod) by the plunger pin locking, and the other end of adjusting screw(rod) is threaded with plunger rod.After adopting this structure: be convenient to adjusting screw(rod) is connected with the plunger conehead on the one hand, plunger pin slides in the groove of adjusting screw(rod) on the other hand, spacing between plunger conehead and the plunger rod is carried out automatic fine tuning, to prevent propelling along with plunger, the suffered pressure of plunger conehead also increases, fluid pressure between plunger and the cylindrical shell strengthens, and causes liquid to return leakage.
This utility model also can adopt following further technical scheme: be provided with two sealing rings staggered relatively between plunger conehead, the plunger rod, two sealing rings are fixed by holder and firm banking and adjusting screw(rod).Two sealing rings staggered relatively are in order to make in the plunger pumpback, to arrive balance, and holder is for two sealing rings are fixed.
Description of drawings
Fig. 1 is the structural representation of cylindrical shell 1.
Fig. 2 is the cutaway view of plunger 2.
Fig. 3 is the structural representation of sealing ring 5.
Fig. 4 is that the A-A of Fig. 3 is to cutaway view.
The specific embodiment
With reference to accompanying drawing, a kind of injection with low resistance, the plunger 2 that comprises cylindrical shell 1 and in cylindrical shell 1, slide, keep sealing between cylindrical shell 1 inboard and the plunger 2, plunger 2 is made of plunger conehead 3 and plunger rod 4, be connected with a plunger pin 7 on the plunger conehead 3, plunger pin 7 comprises a circular hole and passes the post bolt of circular hole, one of adjusting screw(rod) 6 is provided with the groove 8 that matches with plunger pin 7, the post bolt passes circular hole and snaps in the groove 8 with adjusting screw(rod) 6 one and be connected with plunger conehead 3, one sealing ring 5 is enclosed within on the adjusting screw(rod) 6, overlap upper fixed seat 9 then, again another sealing ring 5 is put, fixing by firm banking 10 at last, here need point out, the cross section of sealing ring 5 is substantially oblong-shaped, wherein the one side near the sealing ring appearance is the pointed shape of tilting upward, the placement of two sealing rings 5 is relative, the i.e. wedge angle of the appearance of a sealing ring 5 placement of tilting upward, the wedge angle of the appearance of another sealing ring 5 is to the placement that has a downwarp, adjusting screw(rod) 6 other ends are provided with female thread, be connected with the bolt thread on being fixedly connected on plunger rod 6, rotate the spacing between adjusting screw(rod) 6 scalable plunger coneheads 3 and the plunger rod 4, when adjusting screw(rod) 6 and bolt were screwed, the spacing between plunger conehead 3 and the plunger rod 4 was dwindled, sealing ring 5, holder 9, firm banking 10 is compacted, sealing ring 5 flattens, and makes sealing ring 5 and cylindrical shell 1 medial wall reach liquid sealing.During use, plunger 2 is enclosed within the cylindrical shell 1, with plunger 2 forward impelling, along with the propelling of plunger 2, plunger conehead 3 suffered pressure also increase, and plunger pin 7 slides backward along the groove on the adjusting screw(rod) 68, further dwindled the spacing between plunger conehead 3 and the plunger rod 4, make sealing ring 5 be pressed more flatly, it and cylindrical shell 1 medial wall seal more, and liquid can not return leakage.When plunger 2 pumpbacks, reduce owing to plunger conehead 3 suffered pressure this moment, plunger pin 7 is back sliding along the groove on the adjusting screw(rod) 68, spacing between plunger conehead 3 and the plunger rod 4 strengthens, the sealing ring 5 that is extruded becomes circle, the frictional resistance of it and cylindrical shell 1 medial wall reduces, and under the balanced action of two sealing rings 5 staggered relatively, can conveniently draw back plunger 2 simultaneously.
This utility model is simple in structure, and available plastic material is made, can be broken when transportation and use, and whole bag anesthesia packet can not be used.
Claims (4)
1, disposable injection with low resistance, the plunger (2) that comprises cylindrical shell (1) and in cylindrical shell (1), slide, keep sealing between cylindrical shell (1) inboard and the plunger (2), it is characterized in that: described plunger (2) is made up of plunger conehead (3), plunger rod (4), be provided with sealing ring (5) between plunger conehead (3), the plunger rod (4), plunger conehead (3) is connected by adjusting screw(rod) (6) with plunger rod (4), rotates the tightness that adjusting screw(rod) (6) is regulated sealing ring (5).
2, injection with low resistance as claimed in claim 1, it is characterized in that: be connected with slidably plunger pin (7) on the described plunger conehead (3), plunger pin (7) slides in the groove (8) of adjusting screw(rod) (6), one of adjusting screw(rod) (6) by plunger pin (7) locking, and the other end of adjusting screw(rod) (6) is threaded with plunger rod (4).
3, injection with low resistance as claimed in claim 2, it is characterized in that: be provided with two sealing rings staggered relatively (5) between plunger conehead (3), the plunger rod (4), two sealing rings (5) are fixed with adjusting screw(rod) (6) by holder (9) and firm banking (10).
4, injection with low resistance as claimed in claim 3 is characterized in that: described sealing ring (5) is an annular, and the cross section of sealing ring (5) is substantially oblong-shaped, and wherein the one side near sealing ring (5) appearance is the pointed shape of tilting upward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420020258 CN2684845Y (en) | 2004-02-16 | 2004-02-16 | Disposable low-resistance injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420020258 CN2684845Y (en) | 2004-02-16 | 2004-02-16 | Disposable low-resistance injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2684845Y true CN2684845Y (en) | 2005-03-16 |
Family
ID=34669270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420020258 Expired - Fee Related CN2684845Y (en) | 2004-02-16 | 2004-02-16 | Disposable low-resistance injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2684845Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100435871C (en) * | 2005-09-09 | 2008-11-26 | 余利荣 | Injection with low resistance |
| CN101884813A (en) * | 2010-07-19 | 2010-11-17 | 余利荣 | Novel low-resistance injector |
| CN1785447B (en) * | 2005-07-18 | 2011-08-03 | 李福根 | Self destroyed low resistance injector |
| CN108289996A (en) * | 2015-11-25 | 2018-07-17 | 美敦力迷你迈德公司 | The system for carrying out fluid delivery with wicking film |
| CN111921041A (en) * | 2020-08-06 | 2020-11-13 | 邢雪芳 | Medical hematology department injection cylinder that prevents dust |
-
2004
- 2004-02-16 CN CN 200420020258 patent/CN2684845Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1785447B (en) * | 2005-07-18 | 2011-08-03 | 李福根 | Self destroyed low resistance injector |
| CN100435871C (en) * | 2005-09-09 | 2008-11-26 | 余利荣 | Injection with low resistance |
| CN101884813A (en) * | 2010-07-19 | 2010-11-17 | 余利荣 | Novel low-resistance injector |
| CN108289996A (en) * | 2015-11-25 | 2018-07-17 | 美敦力迷你迈德公司 | The system for carrying out fluid delivery with wicking film |
| CN111921041A (en) * | 2020-08-06 | 2020-11-13 | 邢雪芳 | Medical hematology department injection cylinder that prevents dust |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |