CN102284108A - Clamping-spring safety needle guard with jacket - Google Patents

Abstract

The invention relates to a clamping-spring safety needle guard with a jacket, which comprises a syringe needle, wherein a plastic shell is sleeved on the syringe needle. At the same time, one side of the plastic shell is provided with a needle through hole for the syringe needle to pass through, and the other side of the plastic shell is provided with a syringe connecting port. A needle limiting clamping spring is arranged inside the plastic shell, the needle limiting clamping spring is provided with a locking hole to be close to the needle through hole, and the needle limiting clamping spring is provided with a stop hole close to the syringe connecting port. A stop part is arranged on the front end needle pointer of the syringe needle. The clamping-spring safety needle guard is characterized in that: one end of the plastic shell which is provided with the needle through hole is provided with a connecting pipe, and an extension pipe is provided with a needle pipe jacket part. The plastic shell is matched with the needle pipe jacket part, so contaminants brought by the needle pipe can be effectively isolated after the injection; and by adopting the limiting clamping spring, the syringe needle pointer part can be safely sealed and isolated, and the used syringe needle can be prevented from accidentally puncturing people.

Description

A kind of circlip type safety needle guard with sheath

Technical field

The present invention relates to a kind of needle guard, relate in particular to a kind of circlip type safety needle guard with sheath.

Background technology

With regard to existing medical apparatus and instruments, syringe is one of medical device product of present global sales maximum, and according to conservative estimation, annual only world's overall consumption quantity of disposable syringe promptly reaches more than over ten billion prop up.Yet countries in the world hospital estimates all to take place every year millions of times because of the injection needle human injury accident that syringe needle ruptures or medical personnel's misoperation is caused at present, and the emergency treatment expense that produces therefrom accumulative total has reached surprising multi-billion dollar.Therefore, European and American countries begins to carry out energetically type syringe safe in utilization." the federal safety injector method " of the U.S. stipulates that U.S.'s clinical medicine circle should adopt safety syringe as far as possible, and each hospital must consult and carry out.Medical commission of European Union is by the resolution of " encouraging (European Union) various countries' medical circle type syringe safe in utilization ".

Further, the whole world has 6,000,000,000 injection operations to use non-sterile with regard to reusable syringe or syringe needle every year approximately; The newly-increased hepatitis B virus infection case that dangerous injection causes accounts for 33% of all newly-increased hepatitis B virus infection case in the whole world, and the newly-increased patients infected hiv that the dangerous injection in medical matters place causes accounts for 5% of the newly-increased patients infected hiv sum in the whole world.It is worth noting that countries in the world hospital takes place millions of person-times because of the injection needle human injury accident that syringe needle ruptures or medical personnel's misoperation is caused is annual at present.The statistical data that American Medical Association announces shows, only the U.S. 1,000,000 person-times of medical personnel's accidents take place every year is approximately stabbed accident by syringe, the hepatitis B virus, hepatitis C virus and the AIDS viral infection that wherein have at least over thousands of people to be adhered on the syringe needle.At every turn the emergency treatment expense that produces of medical personnel that stabbed because of the syringe needle head rupture and patient is 3000 dollars per capita.

Summary of the invention

Purpose of the present invention is exactly in order to solve the above-mentioned problems in the prior art, and a kind of circlip type safety needle guard with sheath is provided.

Purpose of the present invention is achieved through the following technical solutions:

A kind of circlip type safety needle guard with sheath, include syringe needle, be arranged with the plastic cement shell on the described syringe needle, a side of described plastic cement shell is provided with the syringe needle through hole of coming in and going out for syringe needle, and the opposite side of described plastic cement shell is provided with the syringe connectivity port; Be provided with the spacing jump ring of syringe needle in the described plastic cement shell, the spacing jump ring of described syringe needle is provided with lock hole near the syringe needle through hole, the spacing jump ring of described syringe needle is provided with position-arresting hole near place, syringe connectivity port, the front end needle point of described syringe needle is provided with the stop bit parts, wherein: the end that described plastic cement shell is provided with the syringe needle through hole is provided with connection tube, and described extension is provided with the needle tubing sheath component.

Above-mentioned a kind of circlip type safety needle guard with sheath, wherein: described needle tubing sheath component includes backplate, is extended with on the described backplate and protects needle guard; Described backplate is provided with connecting hole, and connecting hole is connected with described connection tube.

Further, above-mentioned a kind of circlip type safety needle guard with sheath, wherein: the spacing jump ring of described syringe needle is the concave shape jump ring, includes the jump ring base plate, described jump ring base plate is provided with preceding locking plate near a side of syringe needle through hole, offers lock hole on the preceding locking plate; Described jump ring base plate is provided with the back locking plate near a side of syringe connectivity port, offers position-arresting hole on the back locking plate; Constitute the needle point spatial accommodation between locking plate and the back locking plate before described.

Further, above-mentioned a kind of circlip type safety needle guard with sheath, wherein: locking plate locking plate direction bending backward before described, preceding locking plate is circular-arc.

Further, above-mentioned a kind of circlip type safety needle guard with sheath, wherein: be distributed with stuck point around the described lock hole; Described stuck point is the v-shaped openings that prolongs the circumferential external diffusion of lock hole.

Further, above-mentioned a kind of circlip type safety needle guard with sheath, wherein: described v-shaped openings is for to be crossing distribution around the lock hole circumference.

Further, above-mentioned a kind of circlip type safety needle guard with sheath, wherein: position ring till the described stop bit parts, the aperture of described position-arresting ring is greater than the aperture of position-arresting hole and lock hole; Or described stop bit parts are the expansion mouth, and the aperture of expansion mouth is greater than the aperture of position-arresting hole and lock hole.

Again further, above-mentioned a kind of circlip type safety needle guard with sheath, wherein: the two ends of described plastic cement shell are provided with parting bead, and the spacing jump ring of syringe needle is between parting bead.

The advantage of technical solution of the present invention is mainly reflected in: by cooperating of plastic cement shell and needle tubing sheath component, after finishing injection, at first can effectively isolate the incidental pollutant of needle tubing, and after syringe is finished using, by preceding locking plate and back cooperating between the locking plate, to syringe needle particularly the sealing of carrying out a safety of its tip portion isolate, can guarantee effectively that the syringe needle that has used can not pollute external environment condition.What is more important can prevent that used syringe needle accident from piercing through personnel, stops the pathophoresis approach of this danger.

Description of drawings

Purpose of the present invention, advantage and characteristics will illustrate by the non-limitative illustration of following preferred embodiment and explain.These embodiment only are the prominent examples of using technical solution of the present invention, and all technical schemes of taking to be equal to replacement or equivalent transformation and forming all drop within the scope of protection of present invention.In the middle of these accompanying drawings,

Fig. 1 is the organigram that the circlip type safety needle guard of this band sheath is in the injection user mode;

Fig. 2 is the organigram of concave shape jump ring;

Fig. 3 is the stuck point organigram of preceding locking plate v-shaped openings;

Fig. 4 is the stop bit parts organigram that position-arresting ring constitutes;

Fig. 5 is the expansion mouthful stop bit parts organigram that constitutes;

Fig. 6 is the view of locking plate before the needle point withdrawal;

Fig. 7 is the view that needle point is in spatial accommodation.

The implication of each Reference numeral is as follows among the figure:

1 syringe needle, 2 plastic cement shells

3 lock holes, 4 position-arresting holes

5 parting beads, 6 backplates

7 protectneedle guard 8 jump ring base plates

Locking plate 10 back locking plates before 9

11V font opening 12 position-arresting ring

13expansion mouthful 14 needle points

The specific embodiment

A kind of circlip type safety needle guard with sheath shown in Fig. 1～7 includes syringe needle 1, is arranged withplastic cement shell 2 on syringe needle 1.Simultaneously, be provided with the syringe needle through hole of coming in and going out for syringe needle 1 in a side ofplastic cement shell 2, the opposite side ofplastic cement shell 2 is provided with the syringe connectivity port.Be provided with the spacing jump ring of syringe needle in theplastic cement shell 2, the spacing jump ring of this syringe needle is provided withlock hole 3 near the syringe needle through hole, and the spacing jump ring of syringe needle is provided with position-arrestinghole 4 near place, syringe connectivity port.Frontend needle point 14 at syringe needle 1 is provided with the stop bit parts, and its unusual part is: the end that describedplastic cement shell 2 is provided with the syringe needle through hole is provided with connection tube, and described extension is provided with the needle tubing sheath component.Moreover, better spacing for spacing jump ring is carried out, prevent that it from coming off inplastic cement shell 2, be provided withparting bead 5 at the two ends ofplastic cement shell 2, the spacing jump ring of syringe needle is betweenparting bead 5.

In conjunction with the present invention's one preferred implementation, the needle tubing sheath component includesbackplate 6, is extended with on thebackplate 6 to protect needle guard 7.Simultaneously, be provided with connecting hole onbackplate 6, connecting hole is connected with described connection tube.Like this, in syringe needle 1 was postponed the whole process ofplastic cement shell 2 retraction,needle point 14 positions can be in fully to be protected in theneedle guard 7.

Simultaneously, the spacing jump ring of syringe needle of the present invention its be configured to the concave shape jump ring.Specifically, this concave shape jump ring includes jumpring base plate 8, and described jumpring base plate 8 is provided with precedinglocking plate 9 near a side of syringe needle through hole, offerslock hole 3 on the preceding locking plate 9.Corresponding with it is that jumpring base plate 8 is provided withback locking plate 10 near a side of syringe connectivity port, offers position-arrestinghole 4 on the back locking plate 10.And, matchformation needle point 14 spatial accommodations between thelocking plate 9,back locking plate 10 andplastic cement shell 2 before described.

Further, consider the correct work oflock hole 3, allowlock hole 3 can produce certain deformation, described precedinglocking plate 9locking plate 10 direction bendings backward, precedinglocking plate 9 is circular-arc.And, in order to improve the smooth and easy degree of deformation, aroundlock hole 3, being distributed with stuck point, these stuck points are the v-shaped openings 11 that prolonglock hole 3 circumferential external diffusions.Simultaneously, consider that v-shaped openings 11 is stressed even when syringe needle 1 motion, these v-shaped openings 11 are for to be crossing distribution aroundlock hole 3 circumference.

As Fig. 4, shown in Figure 5, for the ease of qualification to needle position,position ring 12 till the described stop bit parts, the aperture of described position-arrestingring 12 is greater than the aperture of position-arrestinghole 4 with lock hole 3.Certainly, consider the easy making process of whole syringe needle 1, also the stop bit parts can be changed into expansion mouth 13, the aperture of order expansion mouth 13 is greater than the aperture of position-arrestinghole 4 and the aperture oflock hole 3.

Be used for seeing in conjunction with actual making of the present invention, in existing injection, often need the medicament that some are liquid to mix, form together injection, the therefore process that exists a liquid to shift behind a kind of mixed solution with pulverous medicament.Such as, will be in the safe needle guard of protective-cover type syringe needle 1 usefulness in Fig. 1 state and insert in the container that holds liquid pharmaceutical and extract liquid.Inject the container that holds Powdered medicament afterwards.Extracting mixed liquor at last injects.During this period, because the existence of needle tubing sheath component the drawn needle pipe racks can not occur and go out container bottle material beyond the Great Wall, guaranteed injection safety.

Again further, in case after having carried predetermined close to patient, shortly will be when patient extracts out on one's body syringe needle 1.User advancesplastic cement shell 2 toward the injection site, move to patient's skin limit.Afterwards, continue to extract syringe needle 1 out, makeneedle point 14 from patient skin, bounce back and enter in the plastic cement shell 2.Simultaneously, in this process, because the needle tubing of syringe needle 1 is outside equipped with and protectsneedle guard 7, the injection back incidental pollutant of needle tubing institute possibility are all in protectingneedle guard 7, particularlyneedle point 14 is protectedneedle guard 7 fully and is taken in, the unexpected situation that pierces through user can in the process of taking in, not occur, realize first anti-pollution insurance.

Then, as shown in Figure 6: before the stop bit parts ofneedle point 14 run into behind thelocking plate 9, because the aperture of position-arrestingring 12 or the expansion mouthful 13 stop bit parts that constitute is greater than the aperture oflock hole 3,needle point 14 can apply certain power to lockhole 3 and the stuck point that distributes thereof when retraction, the stuck point that makes v-shaped openings 11 constitute irreversible deformation occurs towardsneedle point 14 retraction direction.This deformation directly causes the aperture oflock hole 3 further to diminish specifically, props uplock hole 3 evenneedle point 14 moves ahead once more, also can't pass therethrough, and has played the effect of the locking that travels forward.

Then, constitute inneedle point 14 spatial accommodations betweenlocking plate 9 and theback locking plate 10 beforeneedle point 14 further retracts to, finish taking in of needle point 14.In conjunction with Fig. 7, afterneedle point 14 is received intoneedle point 14 spatial accommodations, because the aperture of position-arrestingring 12 or the expansion mouthful 13 stop bit parts that constitute is greater than the aperture of position-arrestinghole 4,needle point 14 can't further retreat, the abnormal phenomena that 2 slippages of plastic cement shell can not occur has been guaranteed the safe and effective of syringe needle 1 especiallyneedle point 14 taken in.

By above-mentioned character express also in conjunction with the accompanying drawings as can be seen, after adopting the present invention, by cooperating of plastic cement shell and needle tubing sheath component, after finishing injection, at first can effectively isolate the incidental pollutant of needle tubing, and after syringe is finished using, by preceding locking plate and back cooperating between the locking plate, to syringe needle particularly the sealing of carrying out a safety of its tip portion isolate, can guarantee effectively that the syringe needle that has used can not pollute external environment condition.What is more important can prevent that used syringe needle accident from piercing through personnel, stops the pathophoresis approach of this danger.Simultaneously, simple structure of the present invention is convenient to extensive manufacturing, is worthy to be popularized.

Claims (8)

1. circlip type safety needle guard with sheath, include syringe needle, be arranged with the plastic cement shell on the described syringe needle, a side of described plastic cement shell is provided with the syringe needle through hole of coming in and going out for syringe needle, and the opposite side of described plastic cement shell is provided with the syringe connectivity port; Be provided with the spacing jump ring of syringe needle in the described plastic cement shell, the spacing jump ring of described syringe needle is provided with lock hole near the syringe needle through hole, the spacing jump ring of described syringe needle is provided with position-arresting hole near place, syringe connectivity port, the front end needle point of described syringe needle is provided with the stop bit parts, it is characterized in that: the end that described plastic cement shell is provided with the syringe needle through hole is provided with connection tube, and described extension is provided with the needle tubing sheath component.

2. a kind of circlip type safety needle guard according to claim 1 with sheath, it is characterized in that: described needle tubing sheath component includes backplate, is extended with on the described backplate and protects needle guard; Described backplate is provided with connecting hole, and connecting hole is connected with described connection tube.

3. a kind of circlip type safety needle guard according to claim 1 with sheath, it is characterized in that: the spacing jump ring of described syringe needle is the concave shape jump ring, include the jump ring base plate, described jump ring base plate is provided with preceding locking plate near a side of syringe needle through hole, offers lock hole on the preceding locking plate; Described jump ring base plate is provided with the back locking plate near a side of syringe connectivity port, offers position-arresting hole on the back locking plate; Constitute the needle point spatial accommodation between locking plate and the back locking plate before described.

4. a kind of circlip type safety needle guard with sheath according to claim 3 is characterized in that: locking plate locking plate direction bending backward before described, preceding locking plate is circular-arc.

5. a kind of circlip type safety needle guard with sheath according to claim 1 is characterized in that: be distributed with stuck point around the described lock hole; Described stuck point is the v-shaped openings that prolongs the circumferential external diffusion of lock hole.

6. a kind of circlip type safety needle guard with sheath according to claim 5, it is characterized in that: described v-shaped openings is for to be crossing distribution around the lock hole circumference.

7. a kind of circlip type safety needle guard with sheath according to claim 1 is characterized in that: position ring till the described stop bit parts, and the aperture of described position-arresting ring is greater than the aperture of position-arresting hole and lock hole; Or described stop bit parts are the expansion mouth, and the aperture of expansion mouth is greater than the aperture of position-arresting hole and lock hole.

8. a kind of circlip type safety needle guard according to claim 1 with sheath, it is characterized in that: the two ends of described plastic cement shell are provided with parting bead, and the spacing jump ring of syringe needle is between parting bead.

Images