CN2385735Y

CN2385735Y - Propelling rod capable of fracture and covering needle head for safety injector

Info

Publication number: CN2385735Y
Application number: CN 99244015
Authority: CN
Inventors: 刘蓉娥
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-09-01
Filing date: 1999-09-01
Publication date: 2000-07-05
Anticipated expiration: 2009-09-01

Abstract

The utility model relates to a push rod capable of fracturing and covering a needle head for a safety injector, wherein, a needle cylinder is provided with an inner hole, a needle head is arranged at one end of the needle cylinder, and the push rod is movably inserted into the inner hole of the needle cylinder. The push rod comprises a front rod part with a butting ring which can be butted on the end edge of the inner hole of the needle cylinder, a seal which is sheathed on the front end of the push rod and is capable of being plugged in the peripheral face of the inner hole of the needle cylinder, and a rear rod part which is arranged at one end of the front rod part in a connecting way. A join part is arranged between the front rod part and the rear rod part, and the rear rod part is provided with a containing hole from outside to inside; the rear rod part can be taken off after broken by the rod at the join part, and then by the action that the rear rod part is sheathed on the needle head through the containing hole, the purpose of convenient use and member saving can be achieved.

Description

Safety injector is with push rod broken and the fit syringe needle

This utility model is relevant with medical device, but is meant that especially a kind of safety injector breaks with Zhe and the push rod of fit syringe needle.

Press, general syringe is that the front end in a syringe is equiped with a syringe needle, and is inserted in the endoporus of this syringe with a push rod, and can be for the usefulness of injection; And after injection finishes again with a sheathed pipe box should syringe needle, to prevent by situations such as needle sting and environmental pollutions.

But its disappearance is to increase by a sheathed pipe, in order to be sleeved on this syringe needle, therefore must to increase part and use cost, and can roll up the quantity of garbage; In addition, and can not find sheathed pipe sometimes, can't finish and to take at any time, thereby cause the inconvenience in the use in injection.

Moreover, be no lack of the improvement of multiple safety injector on the market, yet its structure and occupation mode are very complicated, and under effectively reduction situation of production cost, the generally rate of its use is not high.

Main purpose of the present utility model is promptly providing a kind of safety injector with push rod broken and the fit syringe needle, and it can be sleeved on syringe needle for utilizing again, and avoids causing thorn to injure pollution, and conveniently takes and use.

A time purpose of the present utility model is more providing a kind of safety injector with push rod broken and the fit syringe needle, and it can make simplifying the structure of safety injector, reduces the use of sheathed container, and can reduce its cost.

Edge is taken off purpose with before reaching, and a kind of safety injector provided by the utility model is to combine a safety injector with syringe and syringe needle with push rod broken and the fit syringe needle, and wherein this syringe has an endoporus, and this syringe needle is an end that is installed in this syringe; This push rod is to plug the endoporus that is active in this syringe, and this push rod consists predominantly of: bar portion has one to encircling the endoporus ora terminalis that can be butted on this syringe before one, and end plug was in the endoporus side face of this syringe before a sealing shroud was located at; One back bar portion is an end that is arranged in this preceding bar portion;

It is characterized in that: also be provided with a junction surface between this preceding bar portion and back bar portion, and this back bar portion ecto-entad is provided with a containing hole;

Can fracture by its junction surface by this push rod this back bar portion is taken off, will be somebody's turn to do of the effect of back bar portion again with sheathed this syringe needle of its containing hole.

Best, this back bar portion not ora terminalis more be provided with a cap can be for being covered on the containing hole opening of this back bar portion.

Moreover, also be provided with a pendulum between this back bar portion and this cap and end keeper.

Wherein this cap is to have the end face that a stick harness and a marginal ridge are located at this stick harness.

Wherein the stick harness periphery of this cap also is provided with some latches, and also being provided with some Ka Gou in the containing hole opening of this back bar portion week can be for each latch engages and seals of this cap.

Wherein to end its stage casing of keeper be can be reduced to the pendulum of this cap.

Again can, the containing hole desired depth place of this back bar portion is provided with one first card and ends edge and can end for card and support withdraw of the needle head.

In addition, the containing hole of this back bar portion ends edge than this first card and slightly more is provided with only edge of one second card in the depths, ends supporting for card and moves back a lid that is sleeved on this syringe needle.

Wherein first and second card of this back bar portion section of ending edge is to be overhead kick shape in the hole.

Wherein to end edge be respectively to be domain edge shape to first and second card of this back bar portion.

Wherein to end edge be respectively to be plurality of segments to first and second card of this back bar portion.

Wherein this junction surface is to be a thin bar.

Wherein this junction surface is the oblique cone shape adjacency with this forward and backward bar portion.

More understand characteristics of the present utility model and effect for making, lift following preferred embodiment now, and cooperate graphic being described further, wherein:

Fig. 1 is the combination view of this utility model and syringe and syringe needle.

Fig. 2 is the front sectional elevation of this utility model one preferred embodiment.

Fig. 3 is the right view of this utility model one preferred embodiment.

Fig. 4 is along 4-4 directional profile view among Fig. 2.

Fig. 5 is the enlarged diagram of this back bar portion opening among Fig. 2.

Fig. 6 be this utility model one preferred embodiment retract user mode figure.

Fig. 7 is the user mode figure that fractures of this utility model one preferred embodiment.

Fig. 8 is the fit syringe needle state diagram of this utility model one preferred embodiment.

Fig. 9 be this utility model one preferred embodiment take off the syringe needle state diagram.

See also Fig. 1, this utility model one preferred embodiment safety injector is to combine a safety injector with syringe 7 and syringe needle 8 with the push rod 1 of broken and fit syringe needle, wherein:

This syringe 7 include portion 71 inside be formed with an endoporus 72, one ears 73 be located at an end can for the finger by holding, a protruding pipe 74 is located at front end and is run through a through hole 75 and communicates with this endoporus 72.

This syringe needle 8 includes a head 81 and is provided with a jack 82 and is located at this head 81 and the predetermined length that stretches out for protruding pipe 74, one needle bodies 83 that are sheathed on this syringe 7, and a card ear 84 is located at the periphery of this head 81 can be for the usefulness that fastens.

In addition, this syringe needle 8 is more to be arranged with a lid 9, injures the effect of protection to prevent its needle body 83 thorns.

And shown in Fig. 3 to 5, this push rod 1 of this utility model is to plug the endoporus 72 that is active in this syringe 7, and it consists predominantly of:

Bar portion 10 before one, its shaft section is to be criss-cross rib 11 to form, having one supports ring 12 and is located at endoporus 72 openings that front end can fasten this syringe 7 of turnover, one pullover 13 is located at this supports the usefulness of front end of ring 12 for installing, and a sealing shroud 15 is sheathed on that these pullover 13 confessions are butted on endoporus 72 perisporiums of this syringe 7 and the state that is sealing.

One back bar portion 20, its shaft is for the endoporus 72 that is inserted in this syringe 7, have that a containing hole 21 ecto-entads axially go deep into a desired depth and its aperture is the external diameter that is slightly larger than this syringe needle 8, one is located at thereafter to ear 22, and ora terminalis supplies hand by the usefulness of holding, one opening, 23 its inner peripherals are provided with some card ditches 24, one first card ends edge 25 and one second card and ends edge 26 preset distance of being separated by and be located at this containing hole 21 near the inner peripheral of its openings 23 and respectively be domain shape, and the truncation surface that this first and second card ends

edge

25,26 is to be overhead kick shape in the hole.

One junction surface 30 is to be formed by this preceding bar portion 10 and this 20 in back bar portion, has one first 31, one second oblique portions 32 of oblique portion, and a thin bar 33 is located between this first and second

oblique portion

31,32.

One cap 40 is to support ear 22 with what two braces 41 were engaged in this back bar portion 20, and a pendulum ends keeper 42 and is positioned at 41 of this two braces and can be connected to this back bar portion 20 with rolling over; Have a plug and lean on 43 its peripheries and be provided with some latches 44 and respectively block the end face that ditch 24, one marginal ridges 45 are located at this stick harness 43, when this cap 40 covers state, protrude from can being easy to open of this back bar portion 20 to ear 22 for what plug was located at this back bar portion 20.

The operation of relevant present embodiment and make flowing mode is described as follows now:

As shown in Figure 1, this syringe needle 8 has been combined on the syringe 7, and the endoporus 72 that this push rod 1 is plugged into this syringe 7 with its preceding bar portion 10, and is pushed into a desired depth, and sucks an amount of injection and can inject.

After injection finishes, as shown in Figure 6, syringe needle 8 is extracted out by injecting body, this push rod 1 is retracted endoporus 72 opening parts that make its junction surface 30 be positioned at this syringe 7; Again as shown in Figure 7, to side bending, this push rod 1 is promptly by its junction surface 30 fractures and can take off bar portion 20 thereafter with the back bar portion 20 of this push rod 1, and the preceding bar portion 10 of this push rod 1 is then to keep somewhere in the endoporus 72 of this syringe 7.

Again as shown in Figure 8, should back bar portion 20 with its containing hole 21 covers should syringe needle 8, end the position that edge 25 is limited to the card ear 84 of this syringe needle 8 until first card of this back bar portion 20, second of this back bar portion 20 blocks edge 26 only that is fastens the ora terminalis of this lid 9.

Then, as shown in Figure 9, bar portion 20 separation are afterwards pulled out this syringe needle 8 and lid 9 are taken off, and can not make syringe needle 8 and lid 9 drop out the containing hole 21 of this back bar portion 20, again this cap 40 is covered the opening 23 of this back bar portion 20 with its stick harness 43, each latch 44 of this cap 40 then meshes the ditch 24 that respectively blocks of this back bar portion 20 and promptly finishes sealing.

In addition, general cap is only to connect with brace, causes the wing that returns of cap to cover its opening easily, and regular meeting gets in the way in use; And the pendulum of this cap 40 of this utility model to end keeper 42 are the positions that can make this cap 40 be positioned out and close, therefore use in the operation more convenient.

Replenish at this, first and second of this utility model this back bar portion blocks that edge only also can be made as vertical endoporus perisporium or towards the direction of opening, so that the easy demoulding of mould; This first and second card section of ending edge also can be gibbosity form or triangle in addition, and this card only edge do not exceed with domain shape, also can be a plurality of sections and be divided into the endoporus side face, and can reach the effect that fastens equally.

Can conclude characteristics of the present utility model by above embodiment is:

1. do not increasing under other member situations of use, the design of this push rod of this utility model itself can provide another purposes of sheathed syringe needle, therefore can exempt the usage quantity of additional member, and reaches the purpose that reduces cost.

2. this push rod can promptly fracture after using and take the fit syringe needle, and the convenience that operation can be provided and take must not taken other garbage packing container again, and can prevent dropping of syringe needle really and situation such as prevent to pollute and stab wound.

To sum up institute is old, this utility model safety injector is with push rod broken and the fit syringe needle, have aforesaid every characteristics and reached and respectively create purpose, and commonly use the making progress property of push rod and the practicality of safety injector, for ensureing the rights and interests of creator's hammer away, patent is filed an application in the whence in accordance with the law.

Claims

1. a safety injector is to combine a safety injector with syringe and syringe needle with push rod broken and the fit syringe needle, wherein this syringe its endoporus is arranged, this syringe needle is an end that is installed in this syringe;

This push rod is to plug the endoporus that is active in this syringe, and this push rod consists predominantly of:

Bar portion before one has one and supports the endoporus ora terminalis that ring can be butted on this syringe, and a sealing shroud is located at front end for the endoporus of filling in this syringe;

One back bar portion is an end that is arranged in this preceding bar portion;

It is characterized in that:

Also be provided with a junction surface between bar portion and back bar portion before being somebody's turn to do, and this back bar portion ecto-entad is provided with a containing hole;

2. safety injector according to claim 1 is characterized in that with push rod broken and the fit syringe needle, wherein this back bar portion not ora terminalis also be provided with a cap can be for the containing hole that is covered on this back bar portion.

3. safety injector according to claim 2 is characterized in that with push rod broken and the fit syringe needle, wherein also is provided with a pendulum between this back bar portion and this cap and ends keeper.

According to claim 2 or 3 described safety injectors with push rod broken and the fit syringe needle, it is characterized in that wherein this cap is to have the end face that a stick harness and a marginal ridge are located at this stick harness.

5. safety injector according to claim 4 is with push rod broken and the fit syringe needle, it is characterized in that, wherein the stick harness periphery of this cap also is provided with some latches, and also being provided with some Ka Gou in the containing hole opening of this back bar portion week can be for each latch engages and seals of this cap.

6. safety injector according to claim 3 is characterized in that with push rod broken and the fit syringe needle, and wherein to end its stage casing of keeper be can be reduced to the pendulum of this cap.

7. safety injector according to claim 1 is characterized in that with push rod broken and the fit syringe needle, and wherein the containing hole desired depth place of this back bar portion is provided with one and can ends for card and support first card that moves back this syringe needle and end edge.

8. safety injector according to claim 7 is characterized in that with push rod broken and the fit syringe needle, and wherein this back bar portion ends edge than this first card and slightly more is provided with one and ends for card and to support drill drift and be located at second card of the lid on this syringe needle and end edge in the depths.

9. safety injector according to claim 8 is characterized in that with push rod broken and the fit syringe needle, and wherein first and second card of this back bar portion section of ending edge is to be overhead kick shape in the hole.

According to Claim 8 or 9 described safety injectors with push rod broken and the fit syringe needle, it is characterized in that wherein to end edge be respectively to be domain edge shape to first and second card of this back bar portion.

11. according to Claim 8 or 9 described safety injectors with push rod broken and the fit syringe needle, it is characterized in that wherein to end edge be respectively to be plurality of segments to first and second card of this back bar portion.

12. safety injector according to claim 1 is characterized in that with push rod broken and the fit syringe needle wherein this junction surface is to be a thin bar.

13. safety injector according to claim 12 is characterized in that with push rod broken and the fit syringe needle, wherein this junction surface is the oblique cone shape adjacency with this forward and backward bar portion.

14. safety injector according to claim 1 is characterized in that with push rod broken and the fit syringe needle it is to penetrate integrally formed with plastic cement.