CN2897287Y - Low-resistance syringe - Google Patents
Low-resistance syringe Download PDFInfo
- Publication number
- CN2897287Y CN2897287Y CN 200620083416 CN200620083416U CN2897287Y CN 2897287 Y CN2897287 Y CN 2897287Y CN 200620083416 CN200620083416 CN 200620083416 CN 200620083416 U CN200620083416 U CN 200620083416U CN 2897287 Y CN2897287 Y CN 2897287Y
- Authority
- CN
- China
- Prior art keywords
- overcoat
- casing
- utility
- core bar
- model
- 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 - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- 241001149930 Protura <class> Species 0.000 claims description 7
- 206010002091 Anaesthesia Diseases 0.000 abstract description 3
- 230000037005 anaesthesia Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model relates to a low-resistance injector including a casing, a plunger, a core pole and a tapered head. The columned plunger is arranged in the anterior part of the core pole and slides inside the casing driven by the core pole, the circumferential surface of the columned plunger is provided with a plurality of circumferential sharp projection which form the loop line seal with the inner wall of overcoat. The casing of the utility model and the plunger have small contact surface, frictional force and resistance, excellent sliding performance, the sharp and ring projection provides high elasticity and wonderful sealing performance. A limit boss is provided on the posterior extremity of the casing to avoid efficiently the slippage of the core pole from the casing. The utility model is an ideal low-resistance injector with the simple structure and convenient operation, which fits for application combined with anesthesia kit.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, specifically a kind of injection with low resistance that cooperates anesthesia packet to use.
Background technology
We know that syringe is a kind of medical apparatus commonly used, and it generally comprises overcoat, piston, core bar, conehead.Piston is installed in the core bar front portion, is driven by core bar to slidably reciprocate in cylindrical jacket, takes out injection liquid, and conehead is located at the overcoat front end, and it is the joint of a band tapering, is used for connecting syringe needle or conduit etc.The syringe of said structure generally all is to be made by macromolecular material, and disposable use pushes away the sealing of liquid in order to keep piston to slide in overcoat, piston face of cylinder large tracts of land contact outer casing inner wall, its contact area in overcoat is big, causes frictional resistance big like this, and the injection debris is many.It is the glass syringe that glass is made that overcoat is also arranged, and frictional force is little between overcoat and the piston like this, and resistance is little, and sliding capability is superior.But the apparatus impact resistance is poor, is subjected to external force to be easy to generate overcoat fragmentation, conehead phenomenon of rupture, and application risk increases greatly.
Summary of the invention
Technical problem to be solved in the utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of simple structure is provided, and is easy for operation, and piston and outer casing inner wall contact area are little, the injection with low resistance of good seal performance.
The technical scheme in the invention for solving the above technical problem is: a kind of injection with low resistance, comprise overcoat, piston, core bar, conehead, cylindrical piston is installed in the core bar front portion, slide in overcoat by the core bar drive, it is characterized in that: the periphery of cylindrical piston is provided with several pointed annular protrusions, and pointed annular protrusion and outer casing inner wall form the annulus line contact sealing.
This utility model core bar middle part is provided with bulge loop, correspondingly is provided with positive stop lug boss on the inwall circumference of overcoat rear end.
The periphery of this utility model cylindrical piston is provided with two pointed annular protrusions that turn forward and two sweptback pointed annular protrusions.
This utility model is because piston and outer casing inner wall form the annulus line contact sealing, and against existing technologies, the contact surface between overcoat and the piston is little, and frictional force is little, and resistance is little, and sliding capability is superior, pointed annular protrusion elasticity height, good seal performance.The overcoat rear end is provided with positive stop lug boss, can effectively avoid core bar slippage from overcoat, pollutes or the generation of broken phenomenon.This utility model simple structure is a kind of ideal injection with low resistance.
Description of drawings
The utility model will be further described below in conjunction with accompanying drawing:
Fig. 1 is a structural representation of the present utility model;
1. overcoats among the figure, 2. piston, 3. core bar, 4. conehead, 5. pointed annular protrusion, 6. bulge loop, 7. positive stop lug boss.
The specific embodiment
As can be seen from Figure 1, a kind of injection with low resistance of this utility model, it comprises overcoat 1, piston 2, core bar 3, conehead 4 etc., cylindrical piston 2 is installed in core bar 3 front portions, can be slidably reciprocated in overcoat 1 by core bar 3 drives, needle holder 4 is located at overcoat 1 front end, is used for connecting syringe needle or conduit etc.Above-mentioned composition, structure and prior art are identical, no longer describe in detail.
This utility model characteristics are: the periphery of cylindrical piston 2 is provided with several pointed annular protrusions 5.As can be seen from Figure 1, being provided with a cross section in the middle of piston 2 peripheries is orthogonal annular groove, being provided with two cross sections before and after this annular groove is arcual annular groove, piston end surface also is provided with annular groove along its circumferencial direction, like this, just forming four cross sections on the periphery of cylindrical piston 2 is leg-of-mutton pointed annular protrusion 5, and two pointed annular protrusions that turn forward and two sweptback pointed annular protrusions are wherein arranged.Pointed annular protrusion 5 forms the annulus line contact sealing with overcoat 1 inwall, and the contact surface between overcoat and the piston is little, and frictional force is little, and resistance is little, and sliding capability is superior.When injection pushes away forward, 5 main sealing functions of the pointed annular protrusion that turns forward, when imbibition pulls back, 5 main sealing functions of sweptback pointed annular protrusion.Pointed annular protrusion elasticity height, good seal performance.
This utility model is because resistance is little, sliding capability is superior, for preventing operate miss, the senior general's core bar of exerting oneself is pulled out overcoat, pollute, this utility model core bar 3 middle parts are provided with bulge loop 6, correspondingly are provided with positive stop lug boss 7 on the overcoat 1 rear end inwall circumference, and it is used for stopping bulge loop 6 and whole core bar 3 outer moving.Can effectively avoid core bar slippage from overcoat like this.
This utility model simple structure, easy for operation, be a kind of ideal injection with low resistance, be particularly suitable for cooperating anesthesia packet to use.
Claims (3)
1, a kind of injection with low resistance, comprise overcoat, piston, core bar, conehead, cylindrical piston is installed in the core bar front portion, slide in overcoat by the core bar drive, it is characterized in that: the periphery of cylindrical piston is provided with several pointed annular protrusions, and pointed annular protrusion and outer casing inner wall form the annulus line contact sealing.
2, injection with low resistance as claimed in claim 1 is characterized in that: the core bar middle part is provided with bulge loop, correspondingly is provided with positive stop lug boss on the inwall circumference of overcoat rear end.
3, injection with low resistance as claimed in claim 1 is characterized in that: the periphery of cylindrical piston is provided with two pointed annular protrusions that turn forward and two sweptback pointed annular protrusions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620083416 CN2897287Y (en) | 2006-04-19 | 2006-04-19 | Low-resistance syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620083416 CN2897287Y (en) | 2006-04-19 | 2006-04-19 | Low-resistance syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2897287Y true CN2897287Y (en) | 2007-05-09 |
Family
ID=38072630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620083416 Expired - Lifetime CN2897287Y (en) | 2006-04-19 | 2006-04-19 | Low-resistance syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2897287Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102631731A (en) * | 2012-03-30 | 2012-08-15 | 杭州龙德医用器械有限公司 | Low-resistance syringe |
| CN105498048A (en) * | 2016-01-21 | 2016-04-20 | 余利荣 | Improved low-resistance injector |
| CN107427642A (en) * | 2015-03-02 | 2017-12-01 | 费森尤斯卡比奥地利有限公司 | For the piston rod with least three ring-type elements for the syringe being prefilled with |
-
2006
- 2006-04-19 CN CN 200620083416 patent/CN2897287Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102631731A (en) * | 2012-03-30 | 2012-08-15 | 杭州龙德医用器械有限公司 | Low-resistance syringe |
| CN102631731B (en) * | 2012-03-30 | 2013-11-13 | 杭州龙德医用器械有限公司 | Low-resistance syringe |
| CN107427642A (en) * | 2015-03-02 | 2017-12-01 | 费森尤斯卡比奥地利有限公司 | For the piston rod with least three ring-type elements for the syringe being prefilled with |
| CN107427642B (en) * | 2015-03-02 | 2021-04-02 | 费森尤斯卡比奥地利有限公司 | Plunger rod with at least three ring elements for a prefilled syringe |
| CN105498048A (en) * | 2016-01-21 | 2016-04-20 | 余利荣 | Improved low-resistance injector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070509 |
|
| EXPY | Termination of patent right or utility model |