CN2748098Y - Self-destruction disposable syringe - Google Patents
Self-destruction disposable syringe Download PDFInfo
- Publication number
- CN2748098Y CN2748098Y CN 200420109797 CN200420109797U CN2748098Y CN 2748098 Y CN2748098 Y CN 2748098Y CN 200420109797 CN200420109797 CN 200420109797 CN 200420109797 U CN200420109797 U CN 200420109797U CN 2748098 Y CN2748098 Y CN 2748098Y
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- CN
- China
- Prior art keywords
- injection tube
- rod
- injection
- tip
- self
- 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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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model provides a self-destruction disposable syringe which belongs to the technical field of medical appliances and solves the problems of the existing self-destruction syringe, such as much complicated structure, excessive amount of liquid medicine residue, etc. The self-destruction disposable syringe comprises an injection tube and an injection rod positioned inside the injection tube. A needle seat, of which a liquid flowing through hole is perforated the center, is positioned at the front end of the injection tube. The injection rod is composed of a rod head and a rod body which are connected with each other. The rod head is covered by a rubber stopper, and a prong is positioned at the front part of the rod head. The part positioned on the front end surface of the injection tube, where the prong can come into contact, is a thinner puncture area relative to other parts. The utility model has the advantages of firm structure, simple manufacturing technique, high self-destroying degree, little residual quantity of liquid medicine, and higher practical value.
Description
Technical field
This utility model belongs to technical field of medical instruments, particularly a kind of disposable syringe with self-destroying function.
Background technology
Self-destruction syringe since safe in utilization, health, characteristics easily be used widely.Therefore, many people design and have produced the re-use preventing once-used syringe of various different structure, have much also applied for patent." re-use preventing once-used syringe " that " re-use preventing once-used syringe " that provides as Chinese patent 98246224.7 and Chinese patent 99206725.1 provide or the like with safety.
As a kind of re-use preventing once-used syringe, want to have higher utility, except self-destroying function is arranged, also necessarily require the production technology of product simple, low cost of manufacture, could be accepted by medical department.The most structure of existing self-destruction syringe is complicated, and perhaps cost of manufacture is higher, thereby makes product be difficult to be widely used.
Self-destruction syringe simple in structure also has, " the Disposable, self-destroying syringe " that provides as Chinese patent 022119698, it is that syringe piston rod is set in syringe, and the front end face of piston rod is fixed with the T type by nail, and syringe outer tube wall top has a concave groove.This syringe is to utilize that the top needle point punctures the vertical thin-walled of syringe when pushing away medicine and finishing, and reaches the purpose of self-destroyed syringe.
But this syringe is when utilizing the T type to puncture thin-walled by nail, and liquid medicine injection is easy to flow out from opening part, causes fluid loss.On the other hand, this syringe also can't make the piston roof pressure of injection rod front end to injection tube the inner, thereby the medicinal liquid residue problem occurs, not only causes liquid waste, and also can pollute environment.
Summary of the invention
The purpose of this utility model is at the existing the problems referred to above of existing re-use preventing once-used syringe, and a kind of re-use preventing once-used syringe of novel structure is provided, and makes it have characteristics such as production technology is simple, the low cost of manufacture of product, self-destruction degree height.
For achieving the above object, this utility model has adopted following technical proposal to realize: this re-use preventing once-used syringe comprises the injection rod in injection tube and the injection tube, the front end of injection tube has needle holder, the center of needle holder is provided with the liquid-through hole of perforation, injection rod is made up of the interconnective bar head and the body of rod, be with a rubber stopper on the bar head, it is characterized in that, there is a tip front portion of described bar head, the position that can touch corresponding to tip on the front end face of injection tube be one with respect to other position thin puncture the district.
In above-mentioned re-use preventing once-used syringe, described tip is in the center of bar head, punctures the middle part that the district is in the injection tube front end face, and pinhead seat position is in the eccentric position of injection tube front end face.
This re-use preventing once-used syringe need be connected on pinhead sleeve on the needle holder before use.In use, at first pull back injection rod, by syringe needle with in the medicinal liquid suction injection tube; Then, push ahead injection rod, advance to the front end face place of injection tube until the bar head of injection rod; At last, when the bar head contacts with the front end face of injection tube, utilize tip, when medicinal liquid all is injected into human body, make the syringe self-destruction, thereby reach disposable purpose by the rubber stopper and the district that punctures of wearing out the injection tube front end face.In this syringe, after tip being entered fully puncture the district, the medicinal liquid in the injection tube also is injected into human body fully, so the residual quantity of medicinal liquid seldom.
In above-mentioned re-use preventing once-used syringe, it is conical that described tip is.Tip adopts this shape, passes gradually in the process that punctures the district at tip, because tip and the external diameter that punctures the contact position, district be in continuous increase, thereby just guarantee that its perforation place can not leak, prevents that medicinal liquid from flowing out from here.
Compare with existing re-use preventing once-used syringe, the utlity model has following advantage:
1, in the structure of this syringe, because tip is arranged at bar head place, tip and bar head are connected as a single entity, can disposal molding, so sound construction and production technology are simple.
2, with tip the front end face of injection tube is punctured after, this syringe just can not have been reused its self-destruction degree height fully.
3, the structure of this re-use preventing once-used syringe is very simple, and operation is also convenient, and the residual quantity of medicinal liquid seldom has higher utility simultaneously.
Description of drawings
Fig. 1 is the structural representation of the re-use preventing once-used syringe that provides of this utility model.
Fig. 2 is the structural representation of re-use preventing once-used syringe after self-destruction that this utility model provides.
Among the figure, 1, injection tube; 11, needle holder; 12, liquid-through hole; 13, puncture the district; 14, front end face; 2, injection rod; 21, bar head; 22, the body of rod; 23, tip; 3, rubber stopper.
The specific embodiment
As shown in Figure 1, this re-use preventing once-used syringe comprises injection tube 1 and injection rod 2.The shape of injection tube 1 main body is identical with the common syringe injection tube, but the needle holder 11 of injection tube 1 front end is in eccentric position.The center of needle holder 11 is provided with the liquid-through hole 12 of perforation, and pinhead sleeve was on needle holder 11 when syringe used, and the medicinal liquid in the injection tube 1 is injected in the human body by syringe needle at last by the liquid-through hole 12 of needle holder 11.
As shown in Figure 1, injection rod 2 is made up of the interconnective bar head 21 and the body of rod 22, and there is tip 23 front portion of bar head 21.The body of rod 22, bar head 21 and tip 23 3 are connected as a single entity, and adopt the plastics once injection moulding.
In the present embodiment, it is conical that tip 23 is.Be with rubber stopper 3 on the bar head 21, rubber stopper 3 will comprise that the whole bar head 21 of tip 23 encases.Thickness at tip 23 place's rubber stoppers 3 is thinner than other position, helps tip 23 like this and passes rubber stopper 3.
Tip 23 is in the center of bar head 21.On the front end face 14 of injection tube 1, there is one to puncture district 13.Puncture the medium position that district 13 also is in injection tube front end face 14, and its thickness is thinner with respect to other position.
As shown in Figure 2, in the syringe use, push ahead injection rod 2, make tip 23 over against puncturing district 13, final force can make tip 23 pass rubber stopper 3 and puncture district 13.
Claims (5)
1, a kind of re-use preventing once-used syringe, comprise the injection rod (2) in injection tube (1) and the injection tube (1), the front end of injection tube (1) has needle holder (11), the center of needle holder (11) is provided with the liquid-through hole (12) of perforation, injection rod (2) is made up of the interconnective bar head (21) and the body of rod (22), be with a rubber stopper (3) on the bar head (21), it is characterized in that, there is a tip (23) front portion of described bar head (21), the front end face (14) of injection tube (1) go up the position that can touch corresponding to tip (23) be one with respect to other position thin puncture district (13).
2, re-use preventing once-used syringe according to claim 1, it is characterized in that, described tip (23) is in the center of bar head (21), punctures the middle part that district (13) is in injection tube front end face (14), and needle holder (11) is in the eccentric position of injection tube front end face (14).
3, re-use preventing once-used syringe according to claim 2 is characterized in that, it is conical that described tip (23) is.
According to claim 1,2 or 3 described re-use preventing once-used syringes, it is characterized in that 4, the described body of rod (22), bar head (21) and tip (23) three are connected as a single entity, adopt the plastics once injection moulding.
According to claim 1,2 or 3 described re-use preventing once-used syringes, it is characterized in that 5, the thickness of locating rubber stopper (3) at tip (23) is thinner than other position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420109797 CN2748098Y (en) | 2004-11-12 | 2004-11-12 | Self-destruction disposable syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420109797 CN2748098Y (en) | 2004-11-12 | 2004-11-12 | Self-destruction disposable syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2748098Y true CN2748098Y (en) | 2005-12-28 |
Family
ID=35719592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420109797 Expired - Fee Related CN2748098Y (en) | 2004-11-12 | 2004-11-12 | Self-destruction disposable syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2748098Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109172957A (en) * | 2018-09-30 | 2019-01-11 | 四川大学华西医院 | Self-destroying disposable syringe |
-
2004
- 2004-11-12 CN CN 200420109797 patent/CN2748098Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109172957A (en) * | 2018-09-30 | 2019-01-11 | 四川大学华西医院 | Self-destroying disposable syringe |
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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 |