CN2240990Y - Disposable contamination prevention syringe - Google Patents
Disposable contamination prevention syringe Download PDFInfo
- Publication number
- CN2240990Y CN2240990Y CN 95215386 CN95215386U CN2240990Y CN 2240990 Y CN2240990 Y CN 2240990Y CN 95215386 CN95215386 CN 95215386 CN 95215386 U CN95215386 U CN 95215386U CN 2240990 Y CN2240990 Y CN 2240990Y
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- CN
- China
- Prior art keywords
- syringe
- piston
- utility
- model
- piston rod
- 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 relates to a disposable contamination prevention syringe which belongs to the technical field of medical appliances. The utility model is mainly composed of a needle cylinder, a piston, a piston rod, a thin emulsion sleeve and a brake rod. The inner wall of the needle cylinder of the utility model is in a closed state in the process of injection, which stops the iatrogenic cross infection caused by the contamination of the inner wall. The utility model is suitable not only for conventional use of various medical units, but also for battlefields and emergent salvage under conditions such as vile environments, serious dust pollution, etc.
Description
This utility model provides a kind of medical apparatus and instruments, disposable anti-pollution injector.The disposable syringe of being promoted the use of clinically at present, by syringe cylinder, syringe piston rod and syringe piston are formed.When piston rod drove piston and slides in syringe cylinder, the syringe cylinder inwall directly communicated with the external world all the time, and operator's hands contacts with piston rod and also is easy to cause the pollution of syringe cylinder inwall and medical cross infection takes place.
The purpose of this utility model is to provide a kind of disposable anti-pollution injector that really can prevent to cause owing to the syringe cylinder wall polluting medical cross infection, and it can fundamentally stop the generation of this medical cross infection.
Embodiment of the present utility model is such: fixing (bonding) sealing connects the thin rubber finger sleeve of a tubbiness on the terminal circular edge of syringe cylinder, thin rubber finger sleeve wraps tightly at piston face and forms one, and flexibly advance or retreat and flexible with piston forward, between syringe cylinder inner wall surface and corresponding thin rubber finger sleeve surface, form an airtight lacuna piston can not directly be contacted with the syringe cylinder inwall, thereby guaranteed that structurally the syringe cylinder inwall is in air-tight state all the time and is hedged off from the outer world in injection manipulation.Therefore fundamentally stopped to cause this unsolved always difficult problem since the syringe invention of medical cross infection owing to the syringe cylinder wall polluting.In addition, syringe of the present utility model, piston does not directly contact with medicinal liquid with the syringe cylinder inwall in injection process with the piston rod part, with after can behind routine disinfection, reuse fully, reduced cost, therefore syringe of the present utility model not only is suitable for the routine use of various medical institutions, and is applicable to that more field, battlefield and various environment are abominable, urgent rescue under the dust pollution serious condition is used, so this is a kind of syringe with development prospect.
Following syringe of the present utility model is described in detail.
Fig. 1 is the syringe construction sketch map.
Fig. 2 is the thin open-ended sketch map of rubber finger sleeve closed injection device tube.
Fig. 3 is piston I-I cut-away view.
Fig. 4 A is the brake bar front view.
Fig. 4 B is brake bar and the bayonet socket user mode figure that joins.
Fig. 4 C is that brake bar places "T"-shaped groove internal state figure.
Fig. 4 D is a syringe upper latch notch structure chart.
This utility model mainly is made up of syringe (1), piston (3), piston rod (2), thin rubber finger sleeve (4) and brake bar (10).Piston and piston rod in the syringe are connected as a single entity, leave the small de-air hole (6) of a garden shape in the nearly centre of piston (3), the hole is provided with the unidirectional flap valve of a garden shape (14), the thin rubber finger sleeve (4) of bonding one tubbiness on the shape periphery of the terminal garden of syringe, this cover diameter equates with the syringe internal diameter, and syringe is sealed.One end of brake bar (10) is thin layer point (10,1) with piston rod handle (5) edge and is connected, the other end is a free end, be "T"-shaped dop (10,2), on the syringe terminal edge, have the bayonet socket (11) of an inner wide and outer narrow, have shape and the identical groove of brake bar (10) (12) on the outer face of piston rod handle (5).
In the use, in the time of in piston (3) enters syringe cylinder (1), remaining air is washed the unidirectional flap valve of thin layer (14) of steam vent (6) covering suitable for reading open and is discharged between piston (3) and the thin rubber finger sleeve (4) under the effect of pressure, thin rubber finger sleeve (4) closely wrapped up with piston (3) and fusing this moment, when piston (3) when retreating, the unidirectional flap valve of thin layer (14) is closed automatically because of vacuum suction between thin rubber finger sleeve (4) and the piston (3), thereby guaranteed that thin rubber finger sleeve (4) flexibly protracts with piston (3) or after contract, when thin rubber finger sleeve (4) parcel piston (3) slides in syringe, at syringe inner wall surface 7 (parietal layer film), with corresponding thin rubber finger sleeve surface (3) (visceral layer film), between form the airtight lacuna (9) of a similar pleural space structure, piston can not directly be contacted with the syringe inwall, and being in air-tight state all the time, the syringe inwall is hedged off from the outer world, prevent the intervention of various possibility pollution factors, really reached the purpose that prevents iatrogenic pollution
When injection finishes, because the elastic reaction of thin rubber finger sleeve (4), when being advanced into syringe (1) front end and cancelling external force, piston (3) can slide the back, the operator can reverse the brake bar (10) that is placed in the groove (12) 270 °, "T"-shaped dop snapped in the bayonet socket (11) go, piston is fixed and can not the back sliding.
This product has guaranteed that the syringe inwall is hedged off from the outer world all the time and is in air-tight state, has really reached the purpose that prevents medical cross infection.
Claims (3)
1, a kind of disposable anti-pollution injector mainly is made up of syringe (1), piston (3) and piston rod (2), it is characterized in that: the thin rubber finger sleeve (4) of bonding one tubbiness on the shape periphery of the terminal garden of syringe, and this cover diameter equates with the syringe internal diameter, and syringe is sealed; Leave the small de-air hole (6) of a garden shape in the nearly centre of piston (3), the hole is provided with the unidirectional flap valve of a garden shape (14).
2, syringe according to claim 1 is characterized in that: syringe is provided with brake bar (10), and its end is thin layer point (10,1) with piston rod handle (5) edge and is connected, and the other end is a free end, is "T"-shaped dop (10,2).
3, syringe according to claim 1 is characterized in that: syringe does not have the bayonet socket (11) of an inner wide and outer narrow on the end margin, has shape and the identical groove of brake bar (10) (12) on the outer face of piston rod handle (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95215386 CN2240990Y (en) | 1995-07-10 | 1995-07-10 | Disposable contamination prevention syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95215386 CN2240990Y (en) | 1995-07-10 | 1995-07-10 | Disposable contamination prevention syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2240990Y true CN2240990Y (en) | 1996-11-27 |
Family
ID=33864754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95215386 Expired - Fee Related CN2240990Y (en) | 1995-07-10 | 1995-07-10 | Disposable contamination prevention syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2240990Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110658704A (en) * | 2019-09-04 | 2020-01-07 | 江西凯利德科技有限公司 | Novel developer supply container and developer supply method |
-
1995
- 1995-07-10 CN CN 95215386 patent/CN2240990Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110658704A (en) * | 2019-09-04 | 2020-01-07 | 江西凯利德科技有限公司 | Novel developer supply container and developer supply method |
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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 |