CN201082281Y - Safe syringe - Google Patents
Safe syringe Download PDFInfo
- Publication number
- CN201082281Y CN201082281Y CNU2007201278857U CN200720127885U CN201082281Y CN 201082281 Y CN201082281 Y CN 201082281Y CN U2007201278857 U CNU2007201278857 U CN U2007201278857U CN 200720127885 U CN200720127885 U CN 200720127885U CN 201082281 Y CN201082281 Y CN 201082281Y
- Authority
- CN
- China
- Prior art keywords
- piston
- needle
- piston rod
- rod
- diameter
- 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
- 238000004804 winding Methods 0.000 claims description 4
- 239000000843 powder Substances 0.000 abstract description 7
- 239000012634 fragment Substances 0.000 abstract description 4
- 239000011521 glass Substances 0.000 abstract description 4
- 206010011409 Cross infection Diseases 0.000 abstract description 2
- 206010029803 Nosocomial infection Diseases 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 13
- 239000003814 drug Substances 0.000 description 5
- 239000008187 granular material Substances 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 229940079593 drug Drugs 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 239000003708 ampul Substances 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000010255 intramuscular injection Methods 0.000 description 1
- 239000007927 intramuscular injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Images
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model relates to a safety syringe, which is composed of a needle, a needle tube, a piston rod, a piston, a push bar and a filter screen; the push bar consists of a cylindrical rod and a rod head, wherein, the needle is installed in the needle tube, the piston rod and the cylindrical rod are installed in the needle tube, the piston is arranged at one end of the piston rod in the needle tube, the filter screen is arranged at the end of the cylindrical rod in the needle tube, the through holes are positioned on the piston rod and the piston, and the cylindrical rod of the push bar is installed in the through hole of the piston rod. The utility model has the outstanding advantages of simple structure, convenient operation and low cost. Because the filter screen is adopted, the utility mode can effectively filter glass fragments, rubber scraps, powder grains and so on, which have entered the syringe along with the liquor, so that the syringe is safe in usage. Moreover, the syringe is used disposably and avoids cross infection.
Description
Technical field:
This utility model relates to technical field of medical instruments, particularly a kind of safety injector.
Technical background:
At present, when the patient is carried out venous transfusion or injection, often need with some powder and liquid of glucose preparation, promptly earlier syringe is inserted and extract an amount of medicinal liquid in the medicinal liquid bottle, extract then medicinal liquid is injected powdered medicine bottle, after treating that medicated powder and medicinal liquid melt fully, extract mixed liquor again out and inject in the interior or direct suction injection tube of infusion bottle.But in the process of ought above-mentionedly making up a prescription, when melting liquid or medicinal liquid, need crack bottleneck then with the grinding wheel delineation in extracting ampoule bottle, the glass fragment that produces when cracking bottleneck is fallen in the medicine bottle easily; Solid medicated powder because the operating time is short or the difference of melting property of solid medicated powder, has the part granule to fail to melt when melting; Simultaneously, when drug feeding device puncture rubber, make the rubber stopper breakage easily, produce rubbery chip and enter in the medicinal liquid.Like this, when using Medicine adder for injection to extract medicinal liquid, glass fragment, part medicated powder granule or rubber scraps also are drawn into.To venous patient transfusion or injection the time, these chips or granule also can directly enter in the blood of human body, with blood circulation, can cause blood vessel blockage, bring harm to patient body, even threat to life.When carrying out intramuscular injection to patient, these chips or granule also can stimulate the muscle of injection site, increase misery to patient.
Summary of the invention:
The purpose of this utility model is to overcome the shortcoming that exists in the prior art, and a kind of simple in structure, easy to operate, safe in utilization, effective other chips or particulate safety injector beyond the filtering liquid medicine is provided.
To achieve these goals, this utility model provides a kind of safety injector, be made up of syringe needle, needle tubing, piston rod, piston, push rod, drainage screen, push rod is made up of cylindrical bar and bar head, wherein, syringe needle is installed on the needle tubing, piston rod and cylindrical bar are installed in the needle tubing, and the end in the piston rod winding the needle tube is provided with piston, and the end in the cylindrical bar winding the needle tube is provided with drainage screen, piston rod and piston are provided with through hole, and the cylindrical bar of push rod is installed in the through hole of piston rod.
Also be provided with needle holder on the described needle tubing, syringe needle is fixed on the needle holder.
Described cylindrical bar is connected with the bar head thread.
The diameter of described piston is identical with the internal diameter of needle tubing.
The diameter of described drainage screen is less than the internal diameter of needle tubing, greater than the internal diameter in needle holder hole.
The diameter of described cylindrical bar is identical with the through-hole diameter of piston rod and piston.
The outstanding advantage of this utility model is: simple in structure, easy to operate, with low cost, owing to adopted drainage screen, can effectively filter out with medicinal liquid and enter glass fragment in the syringe, rubber scraps and medicated powder granule etc., safe in utilization, and be disposable use, avoid cross infection.
Description of drawings:
Fig. 1 is overall structure master's pseudosection of this utility model embodiment.
Fig. 2 is piston rod and the piston structure sketch map of this utility model embodiment.
Fig. 3 is the needle tubing structure cutaway view of this utility model embodiment.
The specific embodiment:
Its design agents mechanism comprised syringe needle 1 when embodiment of the present utility model implemented, needle tubing 2, piston rod 3, bar head 4, cylindrical bar 5, piston 6, drainage screen 7, needle holder 8 is formed, wherein, needle tubing 2 is provided with needle holder 8, syringe needle 1 is fixed on the needle holder 8, piston rod 3 and cylindrical bar 5 are installed in the needle tubing 2, piston rod 3 is provided with piston 6, cylindrical bar 5 is provided with drainage screen 7, piston rod 3 and piston 6 are provided with through hole 9, cylindrical bar 5 is installed in the through hole 9 of piston rod 3, cylindrical bar 5 and bar head 4 are threaded, the diameter of piston 6 is identical with the internal diameter of needle tubing 2, the diameter of drainage screen 7 is less than the internal diameter of needle tubing 2, and greater than the internal diameter in needle holder hole 10, the diameter of cylindrical bar 5 is identical with the through-hole diameter of piston rod 3 and piston 6.
During use, behind the suction medicinal liquid, under the situation that syringe level or syringe needle 1 make progress, fixed piston rod 3, catch bar head 4, driving cylindrical bar 5 and drainage screen 7 moves in needle tubing 2, arrive needle tubing 2 bottoms until drainage screen 7, cover needle holder hole 10, promote piston rod 3 this moment again, force medicinal liquid to enter needle holder hole 10, enter syringe needle 1 through drainage screen 7.
Claims (8)
1. safety injector, form by syringe needle, needle tubing, piston rod, piston, push rod, drainage screen, push rod is made up of cylindrical bar and bar head, it is characterized in that: syringe needle is installed on the needle tubing, piston rod and cylindrical bar are installed in the needle tubing, and the end in the piston rod winding the needle tube is provided with piston, and the end in the cylindrical bar winding the needle tube is provided with drainage screen, piston rod and piston are provided with through hole, and the cylindrical bar of push rod is installed in the through hole of piston rod.
2. a kind of safety injector according to claim 1 is characterized in that, also is provided with needle holder on the described needle tubing, and syringe needle is fixed on the needle holder.
3. a kind of safety injector according to claim 1 and 2 is characterized in that, described cylindrical bar is connected with the bar head thread.
4. a kind of safety injector according to claim 3 is characterized in that, the diameter of described piston is identical with the internal diameter of needle tubing.
5. a kind of safety injector according to claim 1 and 2 is characterized in that, the diameter of described drainage screen is less than the internal diameter of needle tubing, greater than the internal diameter in needle holder hole.
6. a kind of safety injector according to claim 4 is characterized in that, the diameter of described drainage screen is less than the internal diameter of needle tubing, greater than the internal diameter in needle holder hole.
7. a kind of safety injector according to claim 5 is characterized in that, the diameter of described cylindrical bar is identical with the through-hole diameter of piston rod and piston.
8. a kind of safety injector according to claim 6 is characterized in that, the diameter of described cylindrical bar is identical with the through-hole diameter of piston rod and piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201278857U CN201082281Y (en) | 2007-07-27 | 2007-07-27 | Safe syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201278857U CN201082281Y (en) | 2007-07-27 | 2007-07-27 | Safe syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201082281Y true CN201082281Y (en) | 2008-07-09 |
Family
ID=39624743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201278857U Expired - Fee Related CN201082281Y (en) | 2007-07-27 | 2007-07-27 | Safe syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201082281Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102803958A (en) * | 2009-06-17 | 2012-11-28 | 白血球保健股份有限公司 | Blood filter and method of filtering blood |
| CN104198229A (en) * | 2014-09-03 | 2014-12-10 | 中国科学院植物研究所 | Gas sampling injector |
-
2007
- 2007-07-27 CN CNU2007201278857U patent/CN201082281Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102803958A (en) * | 2009-06-17 | 2012-11-28 | 白血球保健股份有限公司 | Blood filter and method of filtering blood |
| CN102803958B (en) * | 2009-06-17 | 2014-08-20 | 白血球保健股份有限公司 | Blood filter and method of filtering blood |
| CN104198229A (en) * | 2014-09-03 | 2014-12-10 | 中国科学院植物研究所 | Gas sampling injector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080709 |