CN101804228A - Self-destruction injector - Google Patents
Self-destruction injector Download PDFInfo
- Publication number
- CN101804228A CN101804228A CN 201010139857 CN201010139857A CN101804228A CN 101804228 A CN101804228 A CN 101804228A CN 201010139857 CN201010139857 CN 201010139857 CN 201010139857 A CN201010139857 A CN 201010139857A CN 101804228 A CN101804228 A CN 101804228A
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- core bar
- overcoat
- self
- conehead
- core rod
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Abstract
The invention relates to a self-destruction injector, which comprises a core rod, an outer sleeve, a needle tube and a needle tube protective sleeve, wherein a conical head of the front end of the outer sleeve and the outer sleeve have the same axle center, an inverted tooth groove is arranged on the wall of an inner hole of the conical head, a small plunger piston matched with the inner hole of the conical head at the front end of the outer sleeve is arranged on the front end surface of the core rod, the small plunger piston and the core rod have the same axle center, inverted teeth matched with the inverted tooth groove are arranged on the small plunger piston, the back part of the core rod is provided with a fracture belt, the core rod in front of the fracture and the core rod behind the fracture belt are connected through contacts, and a press handle is arranged at the tail end of the core rod. The invention has the advantages that the structure is compact; all medicine residual in the outer sleeve can be basically discharged after the use is completed; because the distance from the fracture belt to the front end of the piston is smaller than or equal to the actual depth in the outer sleeve, most of the core rod is locked in the outer sleeve and can not be withdrawn after the self destruction; and the core rod can be freely pulled or pushed in the outer sleeve before the front end of the core rod reaches the end.
Description
Technical field
The present invention relates to a kind of self-destruction syringe.
Background technology
Injection generally comprises water preparation and powder, as everyone knows, the powder injection can not be directly used in injection, must it be dissolved fully by solvent, often need in the use to drive piston back and forth movement in overcoat by the push-and-pull repeatedly of core bar, in the overcoat of piston nose, form the molten medicine zone that volume constantly changes, the push-and-pull repeatedly of core bar makes solvent produce disturbance, solvent and powder are only just fully dissolved rapidly in the disturbance that constantly changes easily, just can be used for injection after powder dissolves fully.
Modern medicine proves, for avoiding to the mankind or animal input or cross infection takes place when taking out medium, hypodermic syringe must disposable use.Disposable syringe worldwide is extensive use of, but it is found that in recent years disposable syringe is reused by lawless person's recovery, so last century Mo health organization proposed disposable syringe and should have the function of self-destruction, can destroy voluntarily after the use or locked and can not reuse.
Anhui Tiankang Medical Products Co., Ltd. has proposed the utility application that name is called " the aseptic self-destruction syringe of disposable use " on March 17th, 2005 to Patent Office of the People's Republic of China, and be awarded patent right on June 14th, 2006, the patent No. is: ZL200520069955.9, this patent changes traditional piston into rubber piston, and elastic seal ring and sheath have been disposed, solved the easy pollution problems of leakage and needle tubing preferably, but how form molten medicine zone in the overcoat before piston, do not propose solution effectively, this scheme can not be used for the powder injection of lyophilized powder and so on equally.
Anhui Tiankang Medical Products Co., Ltd. has submitted to name to be called " disposable type self-destroyed trace input syringe " PCT application on November 13rd, 2006, international application no is PCT/CN2006/003048, this patent application is provided with a no circular cone step and ganoid zone as molten medicine zone on core bar, solved molten medicine problem preferably, provide convenience for traditional self-destruction syringe uses the powder of lyophilized powder and so on.
Because self-destruction syringe is different with the core bar that the type self-destroyed trace input syringe that molten medicine function is arranged uses, even if produce two kinds of self-destruction syringes of same size, core bar is die sinking separately also, and production cost is higher.
Anhui Tiankang Medical Products Co., Ltd. in July 9 in 2008 order to Patent Office of the People's Republic of China the application for a patent for invention that name is called " a kind of syringe core rod and the application in syringe thereof " has been proposed, number of patent application is 200810123583.1, a kind of have concurrently molten medicine and non-molten Types of Medicine core bar and the application in self-destruction syringe thereof are provided, have realized in molten medicine and non-molten Types of Medicine core bar processing with problem with a mould.
Core bar in above-mentioned various self-destruction syringes, because ubiquity is piled up neatly folded circular cone step successively, the structure more complicated causes the processing of production mould relatively more difficult, cost is higher.In addition, the many designs of self-destruction syringe self-destruction characteristic on the market are at the piston connecting portion of the front end of core bar, reach self-destruction by the interior pawl that forms, or needle tubing and overcoat connecting portion, the self-destruction characteristic needs by overcoat, core bar, piston, or three parts of overcoat, core bar, needle tubing cooperate and finish, and carelessness is arranged slightly, can not self-destruction.
At the problems referred to above, this case applicant has proposed the application for a patent for invention that name is called " self-destruction syringe " in December in 2008 24 days to Patent Office of the People's Republic of China, number of patent application is 200810244141.2, and the self-destruction process is finished by overcoat and core bar, and structure is compact; Owing to only be provided with an annular groove and a fracture belt on the core bar, the processing of production mould is compared with self-destroyed syringe in the past, simpler relatively, simultaneously, the self-destruction boss is positioned at the rear portion of overcoat, before the retaining card is not crossed the self-destruction boss of overcoat, core bar can be in overcoat free pull, carry out molten medicine operation.
In the implementation process, we find, though the self-destroying function of this syringe is very good, because core bar is provided with annular groove and fracture belt, also are provided with the retaining card in the annular groove, and the core bar front end also has piston, and therefore, the Mould Machining of core bar and assembling are all difficult; In addition, in use, the left drug that concentrates in the conehead of overcoat front end can't emptying, does not note slightly in post-processed, will cause environmental pollution.
Summary of the invention
The objective of the invention is to: the structure more complicated of the core bar that exists in " self-destruction syringe " that relates at No. 200810244141.2 applications for a patent for invention, the Mould Machining cost is higher, and left drug can't emptying, in post-processed, do not note slightly, the practical problem that will cause environmental pollution provides a kind of new self-destruction syringe.
The object of the present invention is achieved like this: a kind of self-destruction syringe, comprise core bar, overcoat, needle tubing and needle tubing sheath, the overcoat front end is provided with conehead, core bar places overcoat, needle tubing is assemblied on the conehead of overcoat front end, needle tubing is furnished with sheath, it is characterized in that: described conehead and overcoat concentric, and the wall of conehead endoporus is provided with the pawl groove; The core bar front end face is provided with the small plunger with the conehead endoporus of overcoat front end coupling, and small plunger and core bar concentric, small plunger are provided with the pawl that mates with the pawl groove; The core bar rear portion is provided with fracture belt, and the core bar before and after the fracture belt connects by contact point; The end of core bar is provided with presses hands.
In the present invention: outer casing inner wall front end root is provided with the closed loop cannelure, and core bar is provided with the protruding weir of sealing, seals the front end face periphery that protruding weir is positioned at core bar; Described pawl groove is the closed loop groove on the conehead cross section of inboard wall, and the small plunger cross section is provided with the closed loop pawl with closed loop groove coupling; The distance that the core bar front end is taken in described fracture to is less than or equal to the interior actual grade of overcoat.
In the present invention: the core bar at described fracture belt two ends connects by the contact point that is evenly distributed on the core bar periphery.
In the present invention: the core bar at described fracture belt two ends connects by 3～5 contact points that are evenly distributed on the core bar periphery.
In the present invention: also be provided with on the core bar around the protruding weir of the reinforcement of the core bar body of rod, strengthen the rear that protruding weir is positioned at the protruding weir of sealing.
In the present invention: described is anti-skid structure by watch face, and described anti-skid structure is for pressing the equally distributed protruding weir of watch face or groove or salient point or pit.
The invention has the advantages that: because the core bar front end face is provided with the small plunger with the conehead inner hole wall of overcoat front end coupling, small plunger is provided with pawl, the core bar rear portion is provided with fracture belt, the end of core bar is provided with presses hands, these structures of core bar not only make Mould Machining simple relatively, and because of core bar itself need not follow-up assembling processing, processing cost is lower; Because the core bar front end face is provided with the small plunger with the conehead inner hole wall of overcoat front end coupling, can be with the residual basic emptying in the overcoat, reduce or avoid the pollution of post-processed environment; Before the core bar front end arrives at the overcoat end, core bar can be in overcoat free pull, carry out molten medicine behaviour; After small plunger enters the conehead endoporus fully, pawl will fall into the pawl groove, the protruding weir of the sealing of core bar front end also can enter the closed loop cannelure of outer casing inner wall front end root, they move after will stoping core bar jointly, it can't be used by secondary, in a single day move after forcing this moment, will cause core bar to rupture from fracture belt; Core bar is provided with the protruding weir of sealing and around the protruding weir of the reinforcement of the core bar body of rod, can not only guarantees the sealing of core bar and outer inner room, can also guarantee that the motion track of core bar in overcoat is steady; Be less than or equal to the interior actual grade of overcoat because the distance of core bar front end is taken in fracture to, post-rift most of core bar will be locked in the overcoat, can't withdraw from.
Description of drawings
Fig. 1 is the jacket structure sketch map of the embodiment of the invention;
Fig. 2 is the core bar structure sketch map of the embodiment of the invention;
Fig. 3 is the use sketch map of the embodiment of the invention, wherein a, use before, b, inhale medicine, c, air-out or unnecessary medicinal liquid, d, injection, e, the injection back self-locking that finishes is after f, the self-destruction.
Among the figure: 1, overcoat, 2, conehead, 3, the pawl groove, 4, core bar, 5, pawl, 6, fracture belt, 7, press hands, 8, contact point, 9, seal protruding weir, 10, needle tubing, 11, the medicinal liquid bottle, 12, small plunger, 13, the closed loop cannelure, 14, strengthen protruding weir.
The specific embodiment
Accompanying drawing discloses the concrete structure of the embodiment of the invention without limitation, and the invention will be further described below in conjunction with accompanying drawing.
As seen from Figure 1, overcoat 1 inwall front end root of the present invention is provided with closed loop cannelure 13, and the front end of overcoat 1 also is provided with conehead 2, conehead 2 and overcoat 1 concentric, the wall of conehead 2 endoporus is provided with pawl groove 3, and described pawl groove 3 is the closed loop groove on conehead 2 cross section of inboard wall.
During concrete enforcement, the core bar 4 at fracture belt 6 two ends connects by 3～5 contact points 8 that are evenly distributed on core bar 4 peripheries; Described fracture belt 6 should be less than or equal to actual grade in the overcoat 1 to the distance of core bar 4 front ends, is positioned in the overcoat to guarantee the most of core bar after the self-destruction; Press hands 7 surfaces and be anti-skid structure, described anti-skid structure is for pressing the equally distributed protruding weir of watch face or groove or salient point or pit.
During concrete enforcement, also must satisfy: the conehead 2 endoporus coupling of the shape of the small plunger 12 on core bar 4 front end faces and overcoat 1 front end, when the end face of core bar 4 arrives at overcoat 1 end, small plunger 12 on core bar 4 front end faces can insert in conehead 2 endoporus of overcoat 1 front end, simultaneously, pawl 5 on the small plunger 12 should engage with pawl groove 3, and the protruding weir 9 of sealing that is arranged in core bar 4 front end faces also should fall into the closed loop cannelure 13 of overcoat 1 inwall front end root.
Fig. 3 has disclosed use of the present invention, by 3 as seen, structure after the present invention's assembling is: core bar 4 places overcoat 1, needle tubing 10 is fixedly installed on the conehead 2 of overcoat 1 front end by the needle tubing seat, needle tubing 10 also should be furnished with the sheath (not shown), outer casing inner wall front end root is provided with closed loop cannelure 13, and the inwall of conehead 2 is provided with pawl groove 3 one; Core bar 4 front ends are provided with the protruding weir 9 of sealing, and the small plunger 12 on core bar 4 front end faces can insert in conehead 2 endoporus of overcoat 1 front end.
By a among the figure as seen, before the use, the front end face of core bar 4 does not arrive at the end of overcoat 1, at this moment, the protruding weir 9 of sealing in the core bar 4 is not touched outer casing inner wall front end root and is provided with closed loop cannelure 13, and the pawl 5 on the small plunger 12 does not touch the pawl groove 3 in the conehead 2 yet, and pull is freely in overcoat 1 for core bar 4.By b among the figure as seen, inhaling the medicine process is that needle tubing 10 is thrust in the medicinal liquid bottle 11, will be arranged in core bar 4 post-tensionings of overcoat 1, sucks medicinal liquid.By c among the figure as seen, need to promote forward air in the discharge overcoat 1 or unnecessary medicinal liquid before the injection by core bar 4.By d among the figure as seen, injection process, under the effect of external force, core bar 4 is pushed into overcoat 1 gradually, is positioned at the end of overcoat 1 until core bar 4, and at this moment, core bar 4 front end small plungers 12 enter the endoporus of the conehead 2 of overcoat 1 front end, discharge the medicinal liquid in conehead 2 endoporus.By e among the figure as seen, after injection finishes, pawl 5 on the small plunger 12 engages with pawl groove 3, the protruding weir 9 of sealing that is positioned at core bar 4 front end faces also falls into the closed loop cannelure 13 of overcoat 1 inwall front end root, under the combined effect of pawl 5 and pawl groove 3 and protruding weir 9 of sealing and closed loop cannelure 13, realize self-locking, core bar 4 is pull backward, causes syringe can't continue to use.By f among the figure as seen, if continue pull core bar 4 backward, the contact point 8 in core bar 4 fracture belts 6 will rupture, and forms self-destruction, and at this moment, the most of core bar after the self-destruction will be positioned in the overcoat.
Claims (6)
1. self-destruction syringe, comprise core bar, overcoat, needle tubing and needle tubing sheath, the overcoat front end is provided with conehead, core bar places overcoat, needle tubing is assemblied on the conehead of overcoat front end, needle tubing is furnished with sheath, it is characterized in that: described conehead and overcoat concentric, and the wall of conehead endoporus is provided with the pawl groove; The core bar front end face is provided with the small plunger with the conehead endoporus of overcoat front end coupling, and small plunger and core bar concentric, small plunger are provided with the pawl that mates with the pawl groove; The core bar rear portion is provided with fracture belt, and the core bar before and after the fracture belt connects by contact point; The end of core bar is provided with presses hands.
2. self-destruction syringe according to claim 1 is characterized in that: outer casing inner wall front end root is provided with the closed loop cannelure, and core bar is provided with the protruding weir of sealing, seals the front end face periphery that protruding weir is positioned at core bar; Described pawl groove is the closed loop groove on the conehead cross section of inboard wall, and the small plunger cross section is provided with the closed loop pawl with closed loop groove coupling; The distance that the core bar front end is taken in described fracture to is less than or equal to the interior actual grade of overcoat.
3. self-destruction syringe according to claim 1 and 2 is characterized in that: the core bar at described fracture belt two ends connects by the contact point that is evenly distributed on the core bar periphery.
4. self-destruction syringe according to claim 3 is characterized in that: the core bar at described fracture belt two ends connects by 3～5 contact points that are evenly distributed on the core bar periphery.
5. according to claim 2 or 4 described self-destruction syringes, it is characterized in that: also be provided with on the core bar around the protruding weir of the reinforcement of the core bar body of rod, strengthen the rear that protruding weir is positioned at the protruding weir of sealing.
6. self-destruction syringe according to claim 5 is characterized in that: described is anti-skid structure by watch face, and described anti-skid structure is for pressing the equally distributed protruding weir of watch face or groove or salient point or pit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010139857 CN101804228A (en) | 2010-04-02 | 2010-04-02 | Self-destruction injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010139857 CN101804228A (en) | 2010-04-02 | 2010-04-02 | Self-destruction injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101804228A true CN101804228A (en) | 2010-08-18 |
Family
ID=42606286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010139857 Pending CN101804228A (en) | 2010-04-02 | 2010-04-02 | Self-destruction injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101804228A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5458576A (en) * | 1993-12-22 | 1995-10-17 | Habley Medical Technology Corp. | Safety syringe with retracting needle |
| CN2612392Y (en) * | 2003-04-07 | 2004-04-21 | 钱云周 | Self-destructive disposable syringe |
| CN1597005A (en) * | 2004-08-25 | 2005-03-23 | 蒋甫定 | Self-distorying disposable aseptic injector |
| CN2882653Y (en) * | 2005-07-28 | 2007-03-28 | 王红光 | Safety self-destroying disposable syringe |
| CN101444651A (en) * | 2008-12-23 | 2009-06-03 | 安徽省天康医疗用品有限公司 | Auto-disable syringe |
-
2010
- 2010-04-02 CN CN 201010139857 patent/CN101804228A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5458576A (en) * | 1993-12-22 | 1995-10-17 | Habley Medical Technology Corp. | Safety syringe with retracting needle |
| CN2612392Y (en) * | 2003-04-07 | 2004-04-21 | 钱云周 | Self-destructive disposable syringe |
| CN1597005A (en) * | 2004-08-25 | 2005-03-23 | 蒋甫定 | Self-distorying disposable aseptic injector |
| CN2882653Y (en) * | 2005-07-28 | 2007-03-28 | 王红光 | Safety self-destroying disposable syringe |
| CN101444651A (en) * | 2008-12-23 | 2009-06-03 | 安徽省天康医疗用品有限公司 | Auto-disable syringe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100818 |