CN2724736Y - Self-destroying disposable syringe - Google Patents
Self-destroying disposable syringe Download PDFInfo
- Publication number
- CN2724736Y CN2724736Y CN 200420061504 CN200420061504U CN2724736Y CN 2724736 Y CN2724736 Y CN 2724736Y CN 200420061504 CN200420061504 CN 200420061504 CN 200420061504 U CN200420061504 U CN 200420061504U CN 2724736 Y CN2724736 Y CN 2724736Y
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- CN
- China
- Prior art keywords
- syringe
- needle
- pushing cylinder
- lock ring
- self
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- 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 discloses a self-destroying disposable injector, comprising a syringe, a pushing tube and a needle. The front end and the back end of the pushing tube are respectively provided with a convex locking ring and a locking skew block; the inner wall of the needle tube, corresponding to the convex locking ring and the locking skew block which are on the pushing tube, is provided with a locking ring. The farther improvement is that the convex locking ring on the front end of the pushing tube is arranged on a pushing head which is connected with the pushing tube, the front end of the pushing tube is provided with a self-locking circular disk nose which is connected with the hole on the end of the pushing head. The joint part of the needle is sphere-shaped and is connected with a syringe inner containing joint having a semi-sphere-shaped containing joint, so the quick self-lock can be guaranteed and the purpose of the one-time use can be reached; so the cross infection and the secondary pollution are effectively prevented; at the same time, with a needle handle and the syringe being in bulb connection, even if the needle is taken off, another needle can not be fixed on; so the one-time use is guaranteed. The utility model has the advantages of safe use and convenient use.
Description
Technical field
This utility model relates to the medical apparatus and instruments that acts on human body, especially a kind of re-use preventing once-used syringe.
Background technology
Syringe is as a kind of medical apparatus and instruments that directly acts on human body, when hospital, clinic treatment patient, is widely used as the utensil of injection, transfusion etc.For the non-once syringe, owing to there is the problem of secondary pollution and cross infection, also to be eliminated by market and user substantially, national departments concerned is also expressly provided and is not allowed medical department to reuse the needle and syringe head.Disposable syringe kind of the prior art has a variety of, ultimate principle all is to make syringe after injection finishes, form self-locking or self-destruction between syringe cylinder and the pushing cylinder, make between syringe cylinder and the pushing cylinder and can not draw back again when forming self-locking, limit it and be used again.The disclosed re-use preventing once-used syringe of Chinese patent 98246224.7 and 02158527.X, all can form self-destruction, the banking stop of syringe cylinder and interior pushing cylinder is removed, makes between syringe cylinder and the interior pushing cylinder and can not form effective cooperation, can't be re-used as syringe and use.But still there is certain defective in said syringe: 1. just destroy certainly easily when extracting more condensed medicinal liquid midway, rather than use the back self-destruction; 2. its self-desttruction equipment is not firm, and illegal retailer still can just can utilize exhausted syringe after simple process once more, does not reach the purpose that prevents cross infection.
Summary of the invention
At the above-mentioned deficiency of prior art, the purpose of this utility model provide a kind of self-locking firm, can not reusable re-use preventing once-used syringe.
The technical solution of the utility model is: re-use preventing once-used syringe, comprise syringe, pushing cylinder and syringe needle, and the front end of pushing cylinder and rear side are respectively equipped with protruding lock ring and locking skewback; The inwall at corresponding pushing cylinder projection lock ring of syringe and locking skewback place is provided with lock ring.The projection lock ring is the 2-3 road, and corresponding lock ring also is the 2-3 road.
Further improve being that the protruding lock ring of pushing cylinder front end is located on the cutting somebody's hair of being connected with pushing cylinder, the front end of pushing cylinder is provided with self-locking ring dish plush copper and is connected with the hole of the afterbody of cutting somebody's hair.
Further improvement is that the connector portions of described syringe needle is that the spherosome shape is connected with containing joint in the syringe that contains head for the semicircle spheroid.
The front portion of locking skewback also is provided with the protruding lock ring that shields on the pushing cylinder.
This utility model disposable syringe, on syringe and pushing cylinder, be provided with three road self-locking mechanisms at least, and for the front portion of pushing cylinder can only can not be moved forward backward, pushing cylinder adopts two joints promptly to be connected with the mode of cutting somebody's hair, guaranteeing that self-locking is firm reaches that really accomplish can only nonrecoverable purpose, effectively prevents the generation of cross infection and secondary pollution; Also set up safety lock one, guarantee in transportation, keeping, not damage auto-lock function.Simultaneously, pinhead handle and syringe adopt the bulb connected mode, can not change use even take off, and the disposable use of syringe needle also is guaranteed.Have safe and reliable, easy to use, be easy to characteristics such as popularization.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is this utility model syringe cylinder structural representation.
Fig. 2 is this utility model pushing cylinder structural representation.
Fig. 3 is this utility model assembling sketch map.
The specific embodiment
Embodiment 1: referring to Fig. 1, Fig. 2, re-use preventing once-used syringe comprises syringe 1, pushing cylinder 2 and syringe needle 3, and syringe cylinder 1 is a hollow, and pushing cylinder 2 places this cavity and can move forward and backward, and the sectional area of pars papillaris is less, and syringe needle 3 is installed on the pars papillaris; The front end of pushing cylinder 2 is respectively equipped with three roads projection lock ring 4 and locks skewback 5 with rear side; The protruding lock ring 4 of syringe 1 corresponding pushing cylinder 2 is provided with three road lock ring 6 and lock rings 7 with the inwall at locking skewback 5 places; The fixedly connected syringe needle 3 in present embodiment syringe 1 end (not drawing among the figure).Adopt the limited block after the multiple tracks lock ring finishes as injector to inject in this utility model, play the effect of self-destruction and self-locking.Fig. 3 is an installation diagram of the present utility model.
Embodiment 2: referring to Fig. 2, on the basis of embodiment 1, projection lock ring 4 is located at cutting somebody's hair on 8 of being connected with pushing cylinder 2,8 afterbodys of cutting somebody's hair are provided with connecting hole and dock with the ring dish projection lock 9 of pushing cylinder 2 front ends, so further safe self-locking, after being disposable syringe, pushing cylinder 2 is retreated because the effect of protruding lock ring 4 and ring dish projection lock 9 must make it 4 front ends of staying syringe 1 of cutting somebody's hair separate with pushing cylinder 2.
Embodiment 3: as shown in Figure 1, further improving is that syringe needle 3 is that the spherosome shape is connected with the interior joint 10 that contains of the syringe that contains head for the semicircle spheroid with the connector portions of syringe 1.This structure guarantees can not reinstall syringe needle again after syringe needle takes off.
Embodiment 4: as shown in Figure 2, further improving is that the front portion of locking skewback 5 on the pushing cylinder 2 also is provided with protruding lock ring 11, guarantees not damage self-locking mechanism in transportation, keeping to have safe and reliable characteristics.
In the aforesaid way, lock ring 6, lock ring 7, self-destruction lock ring 11 (or protruding lock ring 4 and locking skewback 5) are relative softness, resilient rubber, plastics class material, its slightly larger in diameter is in the diameter of the cavity of syringe cylinder 1, could guarantee like this when aspiration medicinal liquid and liquid medicine injection, have the better seal effect between syringe cylinder 1 and the pushing cylinder 2, play the effect of syringe.
Work process of the present utility model: pushing cylinder is filled in the cavity of syringe cylinder from the afterbody of syringe cylinder, pushed ahead suitable distance; Syringe needle is inserted in the medicinal liquid, pull back pushing cylinder then with aspiration medicinal liquid; After suction finishes, turn down the air in the syringe cylinder, again syringe needle is thrust in patient's body, slowly push ahead interior pushing cylinder then, medicinal liquid is slowly injected in patient's body.When the medicinal liquid in the syringe cylinder has been arranged soon, the groove of the rubber gasket of pushing cylinder front end snaps in respectively in one lock ring and two road lock rings of syringe cylinder, the lock ring of self-destruction simultaneously snaps in the three road lock rings, the chucking lock dog snaps in the four road lock rings, chucking, formation self-locking mutually respectively, after injection finishes, interior pushing cylinder can not be pulled out from syringe cylinder, prevent that effectively this syringe is used again.Perhaps, when with bigger strength with interior pushing cylinder during toward post-tensioning because the twice groove of rubber gasket snaps in respectively in one lock ring and two road lock rings of syringe cylinder, cutting somebody's hair slides out from the bulb-type joint, just separate with pushing cylinder, cut somebody's hair and just for good and all stay in the syringe cylinder.
Certainly, in concrete enforcement, should be specifically noted that the mutual alignment relation of the totally four road lock rings on the syringe cylinder, pushing cylinder is after injection finishes in making, two road grooves of rubber gasket can snap in respectively in one lock ring and the two road lock rings, also should guarantee that self-destruction lock ring and chucking lock dog snap in respectively in three road lock rings and the four road lock rings simultaneously.
Referring to shown in Figure 3, further to improve as of the present utility model, the connector portions of the pinhead handle of syringe needle is that the spherosome shape is fixedlyed connected with the syringe that contains head for the semicircle spheroid.Containing connector portions in the front end of syringe cylinder is established contains connector portions outside establishing on pinhead handle, contain outside to be provided with the spherical joint in the connector portions.During installation, the outer containing connector portions on the pinhead handle is connected with the interior containing connector portions of syringe cylinder front end, forms the device of a similar ball point pen principle.Sealing in this structure can be adopted mature technology of the prior art, is not further described at this.
Claims (7)
1. re-use preventing once-used syringe, comprise syringe (1), pushing cylinder (2) and syringe needle (3), it is characterized in that: the front end of pushing cylinder (2) and rear side are respectively equipped with protruding lock ring (4) and locking skewback (5), on the inwall that the protruding lock ring (3) of the corresponding pushing cylinder of syringe (1) (2) and locking skewback (5) are located, be provided with lock ring (6), (7).
2. re-use preventing once-used syringe according to claim 1 is characterized in that: described protruding lock ring (4) is the 2-3 road, and corresponding lock ring (6) also is the 2-3 road.
3. re-use preventing once-used syringe according to claim 1 and 2, it is characterized in that: on described protruding lock ring (4) is located at pushing cylinder (2) is connected cut somebody's hair (8), (8) afterbody of cutting somebody's hair is provided with connecting hole and docks with the ring dish projection lock (9) of pushing cylinder (2) front end.
4. re-use preventing once-used syringe according to claim 3 is characterized in that: the fixedly connected syringe needle in described syringe (1) end (3).
5. according to claim 1,2 or 4 described re-use preventing once-used syringes, it is characterized in that: the connector portions of described syringe needle (3) is that the spherosome shape is connected with the syringe (1) that contains head (10) for the semicircle spheroid.
6. re-use preventing once-used syringe according to claim 5 is characterized in that: the connector portions of described syringe needle (3) is that the spherosome shape is connected with the syringe (1) that contains head (10) for the semicircle spheroid.
7. re-use preventing once-used syringe according to claim 6 is characterized in that: the front portion that pushing cylinder (2) is gone up locking skewback (5) also is provided with protruding lock ring (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420061504 CN2724736Y (en) | 2004-09-24 | 2004-09-24 | Self-destroying disposable syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420061504 CN2724736Y (en) | 2004-09-24 | 2004-09-24 | Self-destroying disposable syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2724736Y true CN2724736Y (en) | 2005-09-14 |
Family
ID=35039464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420061504 Expired - Fee Related CN2724736Y (en) | 2004-09-24 | 2004-09-24 | Self-destroying disposable syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2724736Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007115481A1 (en) * | 2006-03-28 | 2007-10-18 | Jianquan Li | Self-destroying disposable syringe and self-destroying method thereof |
-
2004
- 2004-09-24 CN CN 200420061504 patent/CN2724736Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007115481A1 (en) * | 2006-03-28 | 2007-10-18 | Jianquan Li | Self-destroying disposable syringe and self-destroying method thereof |
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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: 20050914 Termination date: 20130924 |