CN102038989B

CN102038989B - Safe self-destroying injector

Info

Publication number: CN102038989B
Application number: CN2011100269620A
Authority: CN
Inventors: 霍新
Original assignee: Guangdong Kang'ermei Medical Instrument Co Ltd
Current assignee: Guangdong Kang'ermei Medical Instrument Co Ltd
Priority date: 2011-01-25
Filing date: 2011-01-25
Publication date: 2012-08-01
Anticipated expiration: 2031-01-25
Also published as: CN102038989A

Abstract

The invention provides a safe self-destroying injector, which comprises an outer shell, a core bar, a core bar rubber stopper, a core bar cover, a core bar lock catch, an injection needle, a needle bed, a spring, a safety spring storage room and the outer cover of the safety spring storage room, wherein the core bar rubber stopper is arranged at the lower end of the core bar; the core bar cover is assembled on the core bar; the core bar lock catch is fixed on the upper inner wall of the outer shell; the core bar is arranged in the outer shell; the core bar is provided with a safety self-destroying switch pillar; the safety spring storage room is fixedly connected with the outer shell and is provided with an elastic distracting device; the tail end of the needle bed is arranged in the safety spring storage room, and the head of the needle bed is arranged in the outer cover of the safety spring storage room; the safety spring storage room is fixedly connected with the outer cover of the safety spring storage room; the spring is sleeved on the surface of the needle bed; and one end of the spring is connected with the tail end of the spring, and the other end of the spring is connected with the inner wall of the outer cover of the safety spring storage room. The safe self-destroying injector can realize the safe self-destruction, thus not only being safe in use but also being safe in postprocessing.

Description

A kind of safe self-breaking syringe

Technical field

The present invention relates to injector technology, particularly relate to a kind of safe self-breaking syringe.

Background technology

In treatment clinical course, many patients often need carry out injection for curing, to pass through this treatment means treating disease of liquid medicine injection and to rescue the patient.Thereby injection is an important medical skill measure carrying out the science treatment and give emergency treatment to a patient.Syringe is one of maximum medical device product of present global sales, according to conservative estimation, more than every year, only world's overall consumption up over ten billion of disposable syringe were propped up.

In the prior art, the disposable syringe that generally uses on the market is made up of syringe, syringe needle, piston and core bar usually.This syringe after injection prevalence of the following questions: First, because of the sharp sharp needles stuck naked exposed outside, only likely to cause accidental injury medical personnel, but also to the syringe waste handling, destroyed a lot of inconvenience, this easy on the above Workers cause secondary cross-infection, hidden dangers still exist, particularly for the treatment of patients suffering from serious infectious diseases (such as AIDS, hepatitis, SARS and other diseases) syringe.Two are to use the front and back syringe construction not have any variation, can are used for reusing by bad personnel fully, make " disposable use " fall short of the reality, and cause the hidden danger of cross infection still to exist thus.

To the problems referred to above, last century the nineties once the someone a kind of theory of self-destruction syringe has been proposed.In the prior art; The so-called self-destruction syringe that on market, has occurred generally has following two kinds: a kind of is that injection finishes that the back is destroyed, or locked core bar or syringe; With the problem of avoiding being repeated to use, but the unsafe problems that syringe needle exposes still exists; Another kind is that the injection back syringe needle that finishes can manual work retract syringe, solved syringe needle and exposed problem, but its to retract process be to lean on artificial the completion, bring many inconveniences to medical worker's operation.Not enough to prior art, provide a kind of safe self-breaking syringe very necessary with deficiency of the prior art more than solving.

Summary of the invention

The objective of the invention is to avoid the weak point of prior art and provide a kind of syringe needle is withdrawn automatically reach automatic self-destruction in the core bar, using still is all safe and reliable safe self-breaking syringe of post processing.

The object of the invention is realized through following technical measures.

A kind of safe self-breaking syringe is provided, is provided with overcoat, core bar, core bar plug, core bar lid, core bar snap close, entry needle, needle stand, spring, safety spring apotheca, safety spring apotheca enclosing cover;

Said core bar plug is arranged at said core bar bottom, and said core bar lid is assembled in said core bar, and said core bar snap close is fixed in said overcoat upper inside wall, and it is inner that said core bar is arranged at said overcoat;

Said safety spring apotheca is fixedly connected with said overcoat, and said safety spring apotheca is provided with the elasticity device for spreading;

Said needle stand is provided with head end and tail end; Said entry needle is fixed in said head end, and said tail end is packed in said safety spring apotheca, and said head end is packed in said safety spring apotheca enclosing cover; Said safety spring apotheca is fixedly connected with said safety spring apotheca enclosing cover; Said spring housing is located at said needle stand, and said spring one is terminated at said tail end, and the other end of said spring is connected to the inside of said safety spring apotheca enclosing cover.

Said core bar is provided with the safety self-destruct switch column, and said safety self-destruct switch column is fixed in said core bar.

Said safe self-breaking syringe is provided with piston, and said piston is arranged at said core bar.

Said elasticity device for spreading is set to three or the elastic claw more than three.

Said elastic claw is the uniform distribution setting.

The tail end of said needle stand is provided with and is used for first boss that butt supports said spring one end.

The set inside of said safety spring apotheca enclosing cover is useful on second boss that butt supports the said spring other end.

Said safety spring apotheca is set to buckle with said safety spring apotheca enclosing cover and is connected.

The outside wall surface of said safety spring apotheca is provided with wedge-shaped impression, and the internal face of said safety spring apotheca enclosing cover is provided with the wedge shape convexity, and said wedge-shaped impression and said wedge shape convexity are complementary, and said wedge-shaped impression is packed into protruding in said wedge shape.

Said safe self-breaking syringe is provided with the silica gel circle, and said silica gel circle is arranged between said safety spring apotheca and the said needle stand tail end.

A kind of safe self-breaking syringe of the present invention is provided with overcoat, core bar, core bar plug, core bar lid, core bar snap close, entry needle, needle stand, spring, safety spring apotheca, safety spring apotheca enclosing cover; Said core bar plug is arranged at said core bar bottom, and said core bar lid is assembled in said core bar, and said core bar snap close is fixed in said overcoat upper inside wall, and it is inner that said core bar is arranged at said overcoat; Said safety spring apotheca is fixedly connected with said overcoat, and said safety spring apotheca is provided with the elasticity device for spreading; Said needle stand is provided with head end and tail end; Said entry needle is fixed in said head end, and said tail end is packed in said safety spring apotheca, and said head end is packed in said safety spring apotheca enclosing cover; Said safety spring apotheca is fixedly connected with said safety spring apotheca enclosing cover; Said spring housing is located at said needle stand, and said spring one is terminated at said tail end, and the other end of said spring is connected to the inside of said safety spring apotheca enclosing cover.Because safe self-breaking syringe of the present invention, its spring is in compressive state, and to be arranged at said safety spring apotheca inner with safety spring apotheca enclosing cover, when core bar promotion piston inject gradually finish after; The core bar plug is contact needle stand bottom earlier, and the core bar plug is pressed in the core bar, simultaneously; The core bar bottom is with the contact resilient device for spreading, and at this moment, spring is under the effect of elastic force; To drive needle stand, entry needle and get back to core bar inside together and reach self-destruction, this moment, core bar was supported in the overcoat by butt because the effect of core bar snap close; Core bar can not be drawn out, and keeps self-destroying function and effectively realizes.Make that thus the safety self-destruct entry needle can automatic self-destruction after injection finishes, and entry needle is driven in the core bar, avoided entry needle in the prior art to expose the defective of the superinfection that is caused, not only safe in utilization but also post processing is also very safe.

Description of drawings

Utilize accompanying drawing that the present invention is further described, but the content in the accompanying drawing does not constitute any restriction of the present invention.

Fig. 1 is the structural representation of a kind of safe self-breaking syringe of the present invention;

Fig. 2 is the sectional structure sketch map of a kind of safe self-breaking syringe of Fig. 1;

Structural representation when Fig. 3 is a kind of safe self-breaking syringe generation self-destruction of Fig. 1;

Fig. 4 is safety spring apotheca and the structural representation of packing into of safety spring apotheca enclosing cover of a kind of safe self-breaking syringe of Fig. 1;

Fig. 5 is the plan structure sketch map of safety spring apotheca of a kind of safe self-breaking syringe of Fig. 1;

Fig. 6 is the structural representation of a kind of safe self-breaking syringe of the present invention;

Fig. 7 is the sectional structure sketch map of a kind of safe self-breaking syringe of Fig. 6.

In Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, include:

Overcoat 100,

Core bar 200,

Core bar plug 210,

Core bar lid 220,

Core bar snap close 230,

Safety self-destruct switch column 240,

Piston 300,

Entry needle 400,

Needle stand 500,

Spring 600,

Safety spring apotheca 700,

Safety spring apotheca enclosing cover 800,

Silica gel circle 900,

Needle guard 10,

Elasticity device for spreading 710,

Elastic claw 711,

First boss 510,

Second boss 810,

Wedge-shaped impression 720,

Wedge shape protruding 820.

The specific embodiment

In conjunction with following examples the present invention is further described.

embodiment 1.

A kind of safe self-breaking syringe; Like Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, be provided with overcoat 100, core bar 200, core bar plug 210, core bar lid 220, core bar snap close 230, entry needle 400, needle stand 500, spring 600, safety spring apotheca 700 and safety spring apotheca enclosing cover 800.

Core bar snap close 230 is fixed in overcoat 100 upper inside wall, and core bar 200 is arranged at overcoat 100 inside, and core bar snap close 230 is assembled in overcoat 100 through button bit, and the core bar 200 in the time of can preventing self-destruction is drawn out once more, keeps the self-destruction effect.

Core bar plug 210 is arranged at core bar 200 bottoms, when liquid medicine injection, plays sealing.Core bar lid 220 is assembled in core bar 200 tops, and core bar plug 210 and entry needle 400 when preventing self-destruction drop out.

Core bar 200 is provided with safety self-destruct switch column 240, and safety self-destruct switch column 240 is fixed in core bar 200.When pumping liquid is completed, the safety post 240 destruct switch ON or Fu Fu curved, no resist coat 100, so that when pushed to make the injection, the core rod 200 to the elastic distraction device 710 triggers start self-destruction function, or can not start a secure self-destruct feature.

Safety spring apotheca 700 is fixedly connected with overcoat 100; Safety spring apotheca 700 is provided with elasticity device for spreading 710; Elasticity device for spreading 710 is set to three elastic claws 711, when receiving that not external force or external force are smaller, and elasticity device for spreading 710 state that keeps shut; And when receiving external force effect and external force when bigger, elastic claw 711 will strut.Usually, elastic claw 711 is generally the uniform distribution setting.When pumping liquid is completed, the safety post 240 destruct switch ON or Fu Fu curved, no resist coat 100, so that when pushed to make the injection, the core rod 200 to the elastic distraction device 710 triggers start self-destruction function

Need to prove that the quantity of elastic claw 711 is not limited only to three in the present embodiment, also can be set to other quantity,, also can be set to two like four, five or other quantity according to concrete instructions for use.

Needle stand 500 is provided with head end and tail end; Entry needle 400 is fixed in head end, and tail end is packed in safety spring apotheca 700, and head end is packed in safety spring apotheca enclosing cover 800; Safety spring apotheca 700 is fixedly connected with safety spring apotheca enclosing cover 800; Spring 600 is sheathed on said needle stand 500, and said spring 600 1 is terminated at tail end, and the other end of spring 600 is fixed in the inside of safety spring apotheca enclosing cover 800.The tail end of needle stand 500 is provided with first boss 510 that is used for butt support spring 600 1 ends, and the set inside of safety spring apotheca enclosing cover 800 is useful on second boss 810 of butt support spring 600 other ends.Spring 600 is placed in needle stand 500 outer surfaces, and an end supports through said first boss, 510 butts, and the other end of spring 600 supports through said second boss, 810 butts, and at this moment, spring 600 is in compressive state.

Safety spring apotheca 700 is connected with safety spring apotheca enclosing cover 800 buckles.Specifically be; The outside wall surface of safety spring apotheca 700 is provided with wedge-shaped impression 720710; The internal face of safety spring 600 apothecas 700 enclosing covers is provided with wedge shape protruding 820; Wedge-shaped impression 720 is complementary with wedge shape protruding 820, and wedge-shaped impression 720 is packed in wedge shape convexity 820, makes safety spring apotheca 700 be fixedly connected with safety spring apotheca enclosing cover 800; Be connected with safety spring apotheca enclosing cover 800 through safety spring apotheca 700, inside is in the spring 600 of compressive state will be more safe and reliable.

In order to guarantee the assembling performance between safety spring apotheca 700 and needle stand 500 and the spring 600; Safe self-breaking syringe of the present invention can also be provided with silica gel circle 900; Silica gel circle 900 is arranged between safety spring apotheca 700 and needle stand 500 tail ends, plays the effect that sealing prevents leakage.

In order to guarantee the safety of finished product safe self-breaking syringe, this safe self-breaking syringe is provided with needle guard 10, and needle guard 10 is packed in safety spring apotheca 700.

Safe self-breaking syringe of the present invention, its use is such, takes needle guard 10, moves core bar 200 pumping liquids to, with core bar 200 safe reference column bendings, directly injects.When core bar 200 pushes away when discharging needle guard 10 bottoms; Core bar 200 ends can contact the afterbody of needle stand 500; To pushing back moving the time, the front end face of core bar 200 can contact with the elasticity device for spreading 710 of safety spring apotheca 700 with core bar 200 stoppers, struts elasticity device for spreading 710 and triggers springs 600 elastic force; Transfusion needle is bounce back in the core bar 200 automatically, thereby after injection finishes, carry out self-destruction automatically.

Safe self-breaking syringe of the present invention; After finishing, these safety self-destruct entry needle 400 injections get final product automatic self-destruction; Entry needle 400 is driven in the core bar 200, and therefore, this safety self-destruct entry needle 400 can only use once; Avoid entry needle 400 nonexpondable probabilities in the prior art, guarantee once to use from the source.

Because after injection finished, entry needle 400 rebounded under the effect of spring 600 automatically, therefore; In subsequent treatment; Entry needle 400 can not expose outside, avoided stabbing medical personnel or other cleanup crew, has avoided entry needle 400 in the prior art to expose the defective of the superinfection that is caused; So can not have the possibility of superinfection from stop superinfection at all.

In addition, safe self-breaking syringe of the present invention is simple in structure, and is easy to use, and the patient can not feel pain when starting forced self-destruction.

Need to prove, safe self-breaking syringe of the present invention, its product specification can be set to 1ml, 2ml, 5ml, 10ml, 20ml, 30ml, 50ml as required, also can be set to other specifications.

embodiment 2.

The specific embodiment of a kind of safe self-breaking syringe of the present invention, like Fig. 6, shown in Figure 7, other structure is identical with embodiment 1, and difference is, also is provided with piston 300.Piston 300 is sheathed on the outer surface of core bar 200 lower ends, promotes core bar 200 and will drive piston 300 its external sleeve 100 inner moving, thereby realize extracting or injecting fluid.

Should be noted that at last; Above embodiment is only in order to technical scheme of the present invention to be described but not to the restriction of protection domain of the present invention; Although the present invention has been done detailed description with reference to preferred embodiment; Those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention, and do not break away from the essence and the scope of technical scheme of the present invention.

Claims

1. a safe self-breaking syringe is characterized in that: be provided with overcoat, core bar, core bar plug, core bar lid, core bar snap close, entry needle, needle stand, spring, safety spring apotheca, safety spring apotheca enclosing cover;

Said needle stand is provided with head end and tail end; The tail end of said needle stand is provided with and is used for first boss that butt supports said spring one end; Said entry needle is fixed in said head end; Said tail end is packed in said safety spring apotheca, and said head end is packed in said safety spring apotheca enclosing cover, and said safety spring apotheca is fixedly connected with said safety spring apotheca enclosing cover; The set inside of said safety spring apotheca enclosing cover is useful on second boss that butt supports the said spring other end; Said spring housing is located at said needle stand, and said spring one is terminated at said first boss of said tail end, and the other end of said spring is connected to said second boss of the set inside of said safety spring apotheca enclosing cover.

2. safe self-breaking syringe according to claim 1 is characterized in that: said core bar is provided with the safety self-destruct switch column, and said safety self-destruct switch column is fixed in said core bar.

3. safe self-breaking syringe according to claim 1 and 2 is characterized in that: be provided with piston, said piston is arranged at said core bar.

4. safe self-breaking syringe according to claim 3 is characterized in that: said elasticity device for spreading is set to three or the elastic claw more than three.

5. safe self-breaking syringe according to claim 4 is characterized in that: said elastic claw is the uniform distribution setting.

6. safe self-breaking syringe according to claim 3 is characterized in that: said safety spring apotheca is set to buckle with said safety spring apotheca enclosing cover and is connected.

7. safe self-breaking syringe according to claim 6; It is characterized in that: the outside wall surface of said safety spring apotheca is provided with wedge-shaped impression; The internal face of said safety spring apotheca enclosing cover is provided with the wedge shape convexity; Said wedge-shaped impression and said wedge shape convexity are complementary, and said wedge-shaped impression is packed into protruding in said wedge shape.

8. safe self-breaking syringe according to claim 3 is characterized in that: be provided with the silica gel circle, said silica gel circle is arranged between said safety spring apotheca and the said needle stand tail end.