CN202554658U - Safe syringe needle - Google Patents

Abstract

Provided is a safe syringe needle which comprises a needle point, a needle stand, a needle point protection sleeve, a spring, and a lock-release structure, wherein the needle point protection sleeve is sleeved on the needle stand before and during an injection process and moves to a position of the needle point after the injection is finished in order to protect the needle point, the spring is arranged between the needle stand and the needle point protection sleeve to drive the needle point protection sleeve to move from a position of the needle stand to the position of the needle point after the injection is finished, and the lock-release structure is arranged between the needle stand and the needle point protection sleeve for locking up the needle point protection sleeve at the position of the needle stand before and during the injection process as well as releasing the needle point protection sleeve after the injection is finished. The needle point protection sleeve can press the spring on the needle stand while at the position of the needle stand, and the spring is on a releasing state while the needle point protection sleeve is at the position of the needle point. With the safe syringe needle, medical personnel are prevented from being stuck accidentally by the needle point in use, and at the same time, a phenomenon of using a syringe/syringe needle repeatedly is put to an end, and the safe syringe needle is characterized by being disposable, safe, healthy, convenient to use and easy to recover and process.

Description

Safe injection needle

Technical field

This utility model relates to a kind of novel entry needle, particularly a kind of safe injection needle with the needle point guard function.The use that can match with the ordinary syringe of standard of this safe injection needle.After use, excite safety device, can make the needle point conductively-closed, thereby reach the effect of anti-pricking wound.

Background technology

Adopt syringe completion injection at present or behind patient's withdraw blood sample, for doctor or nurse, exist the danger of being stabbed by the entry needle on the syringe.Abroad, this phenomenon is referred to as " sticking pin ".This causes medical personnel and the personnel that handle these Biohazard Wastes often to be exposed to infection and blood diseases associated, under the danger like AIDS (HIV), hepatitis B (HBV), hepatitis C (HCV) etc.

Report according to World Health Organization (WHO) shows; The whole world suffers the pin evil every year and the patient that infects hepatitis B 800 to 1,600 ten thousand people nearly, and that infects C type hepatitis then has 200 to 4,500,000 people; Aids infection 7 to 150,000 people are also arranged, and annually 1300000 people are arranged approximately because of what the pin evil was got killed.The data of U.S. diseases prevention and treatment association shows that the whole America one annual has 1,600,000 acupuncture accidents to take place, and wherein nurse crowd and blood test personnel acupuncture accident event frequency are the highest, is the doctor secondly again.Under occupational safety Department of Health of the United States Federal (OSHA) estimates that occupation that the whole America has the employee of 5,600,000 medical industries to be exposed to BLOOD DISEASE threatens, operation medical sharp device (for example entry needle) such risk arranged per capita.Having 98% nursing staff can experience potential danger, secondly is doctor 70%.The wound that acupuncture causes is also little; But the thing followed is that fatefulue harm is arranged; Because used syringe has the blood or the body fluid of sufferer, belong to contaminated utensil, if healthy staff is stabbed by it again; Possibly infected, infectious disease the most often take place comprise hepatitis B, C type hepatitis, AIDS and syphilis etc.Research points out that healthy medical personnel are stabbed by the syringe needle that the B liver pollutes, and suitable rehabilitation is not arranged again, thus the probability that infects the B liver 6～30%, the probability that infects the C liver 2～10%, infect the AIDS probability 0.3～2%.The acupuncture incident the most often occurs in general ward, and other still comprises operating room, ICU, therapeutic room and emergency room etc.If again with medical act, the action of recovering needle guard is the most easily by the syringe injury, and the syringe that uses up is not put into the collection box as yet, stabs medical personnel easily yet, so manufacturer focuses on the program of avoiding back lid in the research and development of safety injector more.

Add up according to U.S. Center for Disease Control and Prevention; The annual acupuncture incident (needle stick) that reports to one's superior according to normal procedure of U.S. medical personnel is about 600,000 person-times; If comprise not report or the wounded that other sharp-pointed medical device stings; Should have more than 1,000,000 person-time, and U.S. medical personnel are equivalent to have 20% probability to be wounded by stabbing between 500 to six million peoples.American Nurses' Association thinks that healthy medical personnel are after suffering acupuncture; 2000～3000 dollars of the expenses of each check and prevention infection; If therefore infect hepatitis B or C type hepatitis; Annual medical expense 10,000～20,000 dollars, if infected (HIV can cause AIDS) by HIV, then annual medical expense is more up to 20,000～30,000 dollars.About 0.10～0.15 dollar of every market price of conventional syringe; With the annual consumption 50 of the U.S.～6,000,000,000 calculating; The syringe expenditure is 5～900,000,000 dollars; And receiving acupuncture, each inspection fee with 3000 dollars of calculating with 600,000 people, medical personnel's expenses for prevention and control promptly reaches 1,800,000,000 dollars, if higher by the infection expenditure.In fact the U.S. had 12000 medical care personnel to infect hepatitis B, C type hepatitis or AIDS because of the acupuncture incident in 1 year, and wherein the people is dead surplus in the of 300.Do not contain so compelled having a holiday or therapeutive medicine expenditure, estimate altogether more than 3,500,000,000 dollars.

The Center for Disease Control (CDC) estimates that the injury from sharp utensil evil of 62-88% can be avoided through using safer medical apparatus and instruments.On November 5th, 1999, occupational safety Department of Health of the United States Federal (OSHA) has issued " Directives 2-244D ", requires hospital and health agency to the worker safe pin apparatus to be provided, so that they avoid receiving " sticking pin " injury.November in 2000, the U.S. on the 6th former president Clinton signed " sticking pin safety of The Needlestick Safety and Prevention Act (HR5178) and strick precaution bill "; Require hospital and health agency to use safer band pin medical apparatus and instruments, so that they avoid receiving " sticking pin (Needle stick) " injury.The appearance of this bill; Make increasing medical apparatus and instruments manufacturer begin to close the medical sharp device of casting needle protection; Can be through such protector with hide and protect, avoid syringe needle to expose the accident that causes the personnel of stabbing and catch with the syringe needle of finishing.

Though the use of the honest force urges safety syringe-drum of U.S. government; But be not that idea like this is all arranged all over the world; Statistics according to World Health Organization (WHO); At present syringe/pin ratio of being repeated to use in countries in the world is still high, higher in the majority of the ratio of wherein reusing with developing country, and following these areas face sizable infection crisis always.Following table 1 is World Health Organization's statistical result.

The global syringe of table 1 is reused ratio

Source of data: http://www.who.int/home-page

The U.S. once furnished a huge amount of money for to buy RTI safety injector assistance South Africa to be used to prevent AIDS.

U.S. government's regulation must begin to use instead gradually safety injector in July calendar year 2001; Conventional syringe was forbidden in July, 03 comprehensively, if medical institutes does not handle according to regulation, will fine and with the offense of murder prosecution director of hospital; Existing so far within the border several the cases of the U.S.; But because the supplier can't provide liberal quantity in a short time, defendant also as the counterplea reason, finally obtains acquittal.Therefore U.S. government is loosened to 2005 with the time limit of using instead; Safety injector will be the situation that supply falls short of demand in the U.S. over the next several years; The U.S. is in leader status in the medical market simultaneously, can have influence on the medical policy of other country, and estimating other developed countries can be after 3～five year; Accomplish relevant legislation successively, developing country possibly use instead in six to ten years.Therefore safety injector has the growth stage in 10 years at least, but the USA and Europe is the biggest market, and after used instead the USA and Europe, Mirae Corp.'s growth power can weaken relatively.

The medical device that the armarium manufacturer Becton Dickinson company that forecourt is leading produces the band pin per year surpasses 12,000,000,000, and it has furnished funds for 500,000,000 dollars to develop syringe and the production equipment thereof that syringe needle can indentation.The RITA company that general headquarters are located at U.S. Atlanta provides a kind of LifeGuard ^TMThe double-vane safe transfusion system of Safety Infusion Set, transfusion finish the back syringe needle and are retracted in the containment.

Many enterprises research and develop the syringe of avoiding reusing with pricking wound gradually in the global range afterwards, and demonstrate design style miscellaneous.And it is wherein advanced with the design of automatic retracting type safety injector.

At present global preceding four great tradition syringe manufacturers, BD and Sherwood respectively occupy about 70% and 20% market in the U.S., and BD also is global maximum supplier, and Japanese Terumo and Nipro are the third-largest and the fourth-largest.Oneself releases Safety Lock safety injector to BD before year surplus ten, but medical personnel's acceptance is not high, and BD releases the series of products of Safety Glide subsequently again, because price is too high, influences the purchase intention of school.The product of Sherwood also has the problem on the certain operations, does not actively get involved this market as yet as for Terumo and Nipro.The medical treatment institutes has specific buying object when buying medical device, no matter the product of preceding four great tradition syringe manufacturers all has some shortcomings in operability or price, also let little factory smell the business opportunity place.

The big factory of conventional syringe does not develop safety injector with all strength in addition, and is relevant with market scale, 30,000,000,000, every 0.1 dollar of calculating of the annual demand of conventional syringe; Be equivalent to 3,000,000,000 Yankee dollar market values, and safety injector is about 700,000,000 dollars at American market, less relatively; Add that for the big factory in the worlds such as BD syringe only is product wherein, BD is 37.54 hundred million dollars of 2001 business revenues; Company is divided into Medical system, Clinical lab, Bioscience three big departments; Product item is numerous, and big factory is not eager to get involved, and lets little factory that vivosphere is arranged yet.

Though safety injector and self-destruction syringe have the superiority of use, fancy price has also stoped the paces of its popularization.This utility model in conjunction with the requirement that reuses of anti-pricking wound requirement and preventing, is developed a kind of safe injection needle with the needle point guard function under this opportunity situation.

The utility model content

The purpose of this utility model is to provide a kind of safe injection needle with the needle point guard function; After injection is used; Excite safety device, spring extends automatically and shields needle point, injures human body to prevent needle point; Avoid reusing, have disposable, safety, health, easy to use, the characteristics that are prone to recycling.

In view of this utility model is the characteristics that combine antiseized pin requirement (safe syringe) and prevent to reuse (self-destruction syringe).

In order to realize above-mentioned utility model purpose, the technical scheme that this utility model adopted is following:

A kind of safe injection needle; Comprise needle point, needle stand and sheath; Said needle point is fixed on the said needle stand; It is characterized in that: also comprise one the injection before with injection process in be enclosed within on the needle stand; And the needle point protective sleeve that after injection finishes, can move to the needle point position and needle point is protected; And be arranged between needle stand and the said needle point protective sleeve at the injection rear drive needle point protective sleeve that finishes and move to the spring of tip position by the needle stand position, and be arranged between said needle stand and the said needle point protective sleeve in order to before injection He in the injection process, said needle point protective sleeve being locked in the needle stand position, and the locking-releasing structure that after injection finishes, can the needle point protective sleeve be discharged; When said needle point protective sleeve was in the needle stand position, said needle point protective sleeve can be compressed in said spring on the said needle stand, and when said needle point protective sleeve was in tip position, spring became release conditions; Before injection, said sheath is enclosed within on the said needle stand, with the protection needle point.

In a preferred embodiment of this utility model; Said needle point protective sleeve is a tube structure; One end of said spring is fixed on the said needle stand, and the other end is extended in the needle point protective sleeve and with needle point protective sleeve inwall centre position by the rear end of this needle point protective sleeve and is connected; Offer one on the top of said needle point protective sleeve and hold the hole that needle stand and needle point pass, be provided with at this bore portion edge one by this bore portion edge to the oblique extension in said needle point protective sleeve rear end and cross the needle point covering plate of needle point protective sleeve central axis; Said needle point covering plate has certain elasticity, and when said needle point protective sleeve was enclosed within on the needle stand, this needle point covering plate can be turned round to a side, runs through whole needle point protective sleeve to hold needle stand and needle point; And after said needle point protective sleeve was ejected by spring, this needle point covering plate returned to original state and is positioned at the front end of needle point, and needle point is covered in.

In a preferred embodiment of this utility model; Said locking-releasing structure comprise one be arranged on the needle stand sidewall and outwards outstanding protuberance be opened in the limiting holes on the sidewall of said needle point protective sleeve rear end; When said needle point protective sleeve was enclosed within on the needle stand, said protuberance was inserted in the said limiting holes.

In a preferred embodiment of this utility model, said protuberance is provided with one protuberance is imported the inclined-plane in the limiting holes.

In a preferred embodiment of this utility model, contiguous said limiting holes position, the rear end of said needle stand is provided with one handle.

In a preferred embodiment of this utility model, said needle stand has the interface section that is connected with syringe, and said interface section is a female luer.

In a preferred embodiment of this utility model, after said needle point protective sleeve was ejected by spring, the nearest distance of the tip said needle point covering plate of distance of needle point was not less than 3mm.

The method for using of this utility model is following: the needle stand female luer in the safe injection needle of this utility model is enclosed within on the female luer of syringe; At this moment owing to the protuberance on the needle stand is inserted in the limiting holes of needle point protective sleeve; The needle point protective sleeve can not separate with needle stand; Spring is compressed in the needle point protective sleeve, and needle point exposes the needle point protective sleeve.Take down sheath, can take out medicine and injection operation.When injection is accomplished, promote to the needle point direction with the handle of hands the needle point protective sleeve, be under pressure, the protuberance on the needle stand is understood downwarping, withdraws from the limiting holes of needle point protective sleeve.After in case protuberance withdraws from limiting holes fully,

Spring loses restriction, discharges automatically, and the needle point protective sleeve is ejected the back to the former length of spring.After spring returned to former length, the needle point protective sleeve moved to tip position needle point is surrounded, and simultaneously the needle point covering plate in the needle point protective sleeve returns to original state and is positioned at the front end of needle point, and needle point is covered in.Since the needle point covering plate stop that the needle point protective sleeve can't come back to the needle stand position, the spring behind the simultaneous excitation also can't be withdrawn, and makes needle point be in the protection state all the time, reaches simultaneously to prevent reusable purpose.

This utility model can automatically reset, and send clear sound once protuberance withdraws from limiting holes and the needle point protective sleeve is ejected moment by spring, and operator obviously can see needle point guard cover by the spring bullet to covering the needle point place, promptly show, bounce back successfully.Whole process, operator's hands remains at the rear end of needle point, when pin leaves patient body, can not bounce back.The moment of this utility model needle point conductively-closed is because needle point is not moving, so the liquid splash phenomenon can not occur.Needle point by the needle point protective sleeve after, the tip of needle point surpasses 3mm from needle point covering plate distance, and because the original length of spring and elastic force existence remain this characteristic, can not lose the function that prevents that needle point from exposing because of the external force effect.The needle point guard cover of this utility model need just work under needle stand and needle point guard cover synergism.Because spring recovers can't bounce back back after the former length, therefore satisfy syringe and prevent the requirement that reuses.

This utility model adopts above technical scheme, is stabbed by accidental needle when having avoided the medical worker to use, and has stopped the repeated use phenomenon of syringe/entry needle simultaneously, has disposable, safety, health, easy to use, the characteristics that are prone to recycling.

Description of drawings

Fig. 1 does not use preceding assembling sketch map for this utility model.

Fig. 2 is pushed to the view of tip position for this utility model needle point protective sleeve.

The specific embodiment

For technological means, creation characteristic that this utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with concrete diagram, further set forth the embodiment of this utility model.

Referring to Fig. 1, Fig. 1 has provided this utility model safe injection needle and has not used preceding assembling sketch map.This safe injection needle comprises needle point 100, needle stand 200, needle point protective sleeve 300, spring 400 and sheath 500.Needle stand 200 has the interface section that is connected with syringe 600, and this interface section is a female luer 210.Can the female luer 210 of needle stand 200 be inserted in during use on the female luer 610 of syringe 600 and get final product.

The needle point 100 of this utility model safe injection needle is fixed on the needle stand 200.Needle point protective sleeve 300 is a tube structure; When not using; Needle point protective sleeve 300 is enclosed within needle stand 200 positions, and an end of spring 400 is fixed on the needle stand 200, and the other end is extended in the needle point protective sleeve 300 and with needle point protective sleeve 300 inwall centre positions by the rear end of needle point protective sleeve 300 and is connected.Offer one on the top of needle point protective sleeve 300 and hold the hole 310 that needle stand 200 and needle point 100 pass, before injection during with injection, needle point 100 can not surrounded by needle point protective sleeve 300 like this.

In order to make this utility model safe injection needle when not using; Promptly before the injection and in the injection process; Needle point protective sleeve 300 can be retained in needle stand 200 positions and spring 400 is compressed in the needle point protective sleeve 300; And after injection finishes; Spring 400 can be passed needle point protective sleeve 300 to needle point 100 positions, between needle stand 200 and needle point protective sleeve 300, is provided with one in order to before injection He in the injection process, needle point protective sleeve 300 being locked in needle stand 200 positions, and the locking-releasing structure that after injection finishes, can needle point protective sleeve 300 be discharged.

This locking-releasing structure comprise one be arranged on needle stand 200 sidewalls and outwards outstanding protuberance 220 be opened in the limiting holes 320 on the needle point protective sleeve 300 rear end sidewalls; Be enclosed within 200 last times of needle stand at needle point protective sleeve 300, protuberance 220 is inserted in the limiting holes 320.For dispatching from the factory when assembling, protuberance 220 is imported in the limiting holes 320 smoothly, simultaneously be set to inclined-plane 221 at that of protuberance 220 contiguous needle points 100.

In order smoothly needle point protective sleeve 300 to be pushed to needle point 100 directions, make protuberance 220 detach limiting holes 320, be provided with one handle 330 in 320 positions, proximity restriction hole, the rear end of needle stand 200.When injection is accomplished, promote to needle point 100 directions with the handle 330 of hands needle point protective sleeve 300, it is more laborsaving to operate like this.

After being pushed into needle point 100 positions at needle point protective sleeve 300; Prevent needle point protective sleeve 300 retractions; Simultaneously in order to prevent the repeated use of syringe/entry needle, in the hole 310 part edges be provided with one by these hole 310 part edges to the oblique extension in needle point protective sleeve 300 rear ends and cross the needle point covering plate 340 of needle point protective sleeve 300 central axis; This needle point covering plate 340 has certain elasticity, is enclosed within 200 last times of needle stand at needle point protective sleeve 300, and this needle point covering plate 340 can be turned round to a side, runs through whole needle point protective sleeve 300 to hold needle stand 200 with needle point 100; And after needle point protective sleeve 300 was ejected by spring 400, this needle point covering plate 340 returned to original state and is positioned at the front end of needle point 100, and needle point 100 is covered in.At this moment the tip of needle point 100 is not less than 3mm apart from needle point covering plate 340 nearest distances.Can make like this between the needle point covering plate 340 relative needle points 100 has a buffer distance, when making needle point protective sleeve 300 run into unexpected bump, can not touch needle point 100 immediately, but absorb the energy of bump through the retraction of spring 400.

When injection is accomplished, promote to needle point 100 directions with the handle 330 of hands needle point protective sleeve 300, be under pressure, the protuberance 220 on the needle stand 200 is understood downwarpings, withdraws from the limiting holes 320 of needle point protective sleeve 300.In case after protuberance 220 withdrawed from limiting holes 320 fully, spring 400 lost restriction, discharge automatically, needle point protective sleeve 300 is ejected the back to spring 400 former length.As shown in Figure 2, after spring 400 returned to former length, needle point protective sleeve 300 moved to needle point 100 positions needle point 100 is surrounded, and simultaneously the needle point covering plates 340 in the needle point protective sleeve 300 return to original state and are positioned at the front end of needle point 100, and needle point 100 is covered in.Since needle point covering plate 340 stop that needle point protective sleeve 300 can't come back to needle stand 200 positions, the spring 400 behind the simultaneous excitation also can't be withdrawn, and makes needle point 100 be in the protection state all the time, reaches simultaneously to prevent reusable purpose.

The various structures of above-mentioned enforcement only are used for explaining utility model, but are not limited to this utility model.Every any conversion or replacement of being done in this case spirit all belongs within the protection domain of this utility model claim.

Claims (7)

1. safe injection needle; Comprise needle point, needle stand and sheath; Said needle point is fixed on the said needle stand; It is characterized in that: also comprise one the injection before with injection process in be enclosed within on the needle stand; And the needle point protective sleeve that after injection finishes, can move to the needle point position and needle point is protected; And be arranged between needle stand and the said needle point protective sleeve at the injection rear drive needle point protective sleeve that finishes and move to the spring of tip position by the needle stand position, and be arranged between said needle stand and the said needle point protective sleeve in order to before injection He in the injection process, said needle point protective sleeve being locked in the needle stand position, and the locking-releasing structure that after injection finishes, can the needle point protective sleeve be discharged; When said needle point protective sleeve was in the needle stand position, said needle point protective sleeve can be compressed in said spring on the said needle stand, and when said needle point protective sleeve was in tip position, spring became release conditions; Before injection, said sheath is enclosed within on the said needle stand, with the protection needle point.

2. safe injection needle as claimed in claim 1; It is characterized in that; Said needle point protective sleeve is a tube structure, and an end of said spring is fixed on the said needle stand, and the other end is extended in the needle point protective sleeve and with needle point protective sleeve inwall centre position by the rear end of this needle point protective sleeve and is connected; Offer one on the top of said needle point protective sleeve and hold the hole that needle stand and needle point pass, be provided with at this bore portion edge one by this bore portion edge to the oblique extension in said needle point protective sleeve rear end and cross the needle point covering plate of needle point protective sleeve central axis; Said needle point covering plate has elasticity, and when said needle point protective sleeve was enclosed within on the needle stand, this needle point covering plate can be turned round to a side, runs through whole needle point protective sleeve to hold needle stand and needle point; And after said needle point protective sleeve was ejected by spring, this needle point covering plate returned to original state and is positioned at the front end of needle point, and needle point is covered in.

3. according to claim 1 or claim 2 safe injection needle; It is characterized in that; Said locking-releasing structure comprise one be arranged on the needle stand sidewall and outwards outstanding protuberance be opened in the limiting holes on the sidewall of said needle point protective sleeve rear end; When said needle point protective sleeve was enclosed within on the needle stand, said protuberance was inserted in the said limiting holes.

4. safe injection needle as claimed in claim 3 is characterized in that, said protuberance is provided with one protuberance imported the inclined-plane in the limiting holes.

5. safe injection needle as claimed in claim 3 is characterized in that, contiguous said limiting holes position, the rear end of said needle stand is provided with one handle.

6. safe injection needle as claimed in claim 1 is characterized in that said needle stand has the interface section that is connected with syringe, and said interface section is a female luer.

7. safe injection needle as claimed in claim 1 is characterized in that, after said needle point protective sleeve was ejected by spring, the nearest distance of the tip said needle point covering plate of distance of needle point was not less than 3mm.

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