CN2705178Y

CN2705178Y - Leak-proof needle cover structure

Info

Publication number: CN2705178Y
Application number: CN 200420035540
Authority: CN
Inventors: 陈东豪
Original assignee: Individual
Current assignee: Vantex Biotechnology Co Ltd
Priority date: 2004-04-07
Filing date: 2004-04-07
Publication date: 2005-06-22
Anticipated expiration: 2014-04-07

Abstract

The utility model discloses a kind of anti-dropped stitch lid structure, refer to a kind ofly have the design that bounces back to function in the syringe at safety injector syringe needle and needle stand, wherein this pin is placed on the end and is provided with a cap, and be formed with the leakproof ring around the cap inboard, so when the pin lid is placed on needle retractable, cap will complied with lid and place the peristome of syringe, and effectively prevent the medicament outflow that syringe is inner residual.

Description

Anti-dropped stitch lid structure

Technical field

This utility model is mainly concerned with a kind of anti-dropped stitch lid structure, especially refer to that a kind of pin is placed on leading section and is provided with a cap, the external diameter of this cap is than the peristome greater than the safety syringe, thereby make when syringe needle and needle stand are pulled back by the push rod system of buckleing, can cover the peristome that places syringe simultaneously, and prevent the anti-dropped stitch lid structure that the residual medicament of syringe leaks.

Background technology

Medical treatment is infected, for medical personnel, major part all is because the improper use of medical apparatus and instruments causes, just be example with the syringe: the syringe needle of syringe is the utensil that directly contacts with sufferer, so the use of single only can be provided, yet medical personnel are often careless or lack experience because of one, just are used syringe needle and stab, and this measure certainly will cause the infection of medical secondary.Therefore just develop and safety injector, purpose is exactly to wish that syringe provides the application target of single, and can allow needle retractable in the function of syringe, and the protection medical personnel are not stabbed and cause medical treatment to infect by syringe needle.

In this safety injector, as shown in Figure 1: safety injector mainly is to be installed with a needle stand 5 and a push rod 4 in a hollow syringe 3, glue head 41 central authorities of these push rod 4 front ends are provided with one and buckle portion 42, it mainly is when utilizing push rod 4 to be pushed forward to the end, needle stand 5 and interlock syringe needle 2 can be lived by fastener by button portion 42, the right hollow bulb 31 that when push rod 4 is pulled back backward, needle stand 5 and syringe needle 2 will can be pulled in the lump in the hollow syringe 3, again push rod 4 is fractureed afterwards, and syringe needle 2 is remained in the syringe 3 fully and can not stab other people, and syringe 3 also can't be used once more and effectively stops syringe by the recovery of secondary.

The inventor invents this kind of safety injector, it is a creation of benefiting the healthcare givers, but in its operating process ignored finish using after, again pin lid 1 is nested with the action of syringe needle 2, though the final kenel push rod 4 of operation is fractureed, and can't be again with needle stand 5 and syringe needle 2 extrapolations, but do not promote after cannot say for sure to throw aside by other body of rod or less than the article of syringe 3 calibers, the personnel that place Biohazard Waste when the time comes just have the danger of being stabbed.

Even if existing pin lid 1 is placed on the syringe needle 2, because the retraction of needle stand 5 and syringe needle 2, hollow syringe 3 will certainly residual minim medicament, if be inverted a little time, still can cause leaking of medicament, so the disappearance that medicament leaks is not a pin lid 1 yet to be placed on syringe needle 2 and just can to solve, because, the peristome 32 of the syringe 3 of safety is to be open shape, if want effectively to prevent fully that syringe needle 1 from exposing because of carelessness stabs or medicament leaks, the capping that the peristome 32 of syringe 3 is complete that necessary is exactly is only solution.

The utility model content

The technical problems to be solved in the utility model just is: at the drawback of above-mentioned prior art, provide a kind of anti-dropped stitch lid structure, thereby prevent that effectively false touch that syringe needle exposes and residual medicament from leaking, and can stop the problem that the pin lid is arbitrarily abandoned.

In order to solve the problems of the technologies described above, the solution that the utility model proposes is: a kind of anti-dropped stitch lid structure, the pin lid is the one ejection formation, it is characterized in that: described pin is placed on the leading edge end and is formed with a cap, a pipe shaft and a lower cover, the external diameter of this cap is greater than the peristome of safety syringe, and places in interior side ring and to be provided with seal ring.

The external diameter of described lower cover needs the peristome less than syringe.Described pin lid also can be formed with helicitic texture around the pipe shaft of cap inboard, and correspondence another kind of syringe cylinder structure on the market is provided with the threaded portion in the peristome inboard.

Compared with prior art, advantage of the present utility model is: just can cover the peristome of putting syringe synchronously when syringe needle and needle stand are pulled back by the push rod system of buckleing, and make syringe be a sealed shape, and needle stand and syringe needle are sealed among the hollow syringe fully, prevent that effectively false touch that syringe needle exposes and residual medicament from leaking; Moreover, because the pin lid is placed among syringe, can stop the problem that the pin lid is arbitrarily abandoned.

Description of drawings

Fig. 1 is the schematic perspective view that this utility model is implemented on known safe type syringe;

Fig. 2 is a generalized section of the present utility model;

Fig. 3 is this utility model combination action sketch map;

Fig. 4 is this utility model combination action sketch map;

Fig. 5 is the combination action sketch map of embodiment 2.

Marginal data

Syringe needle 1

Pipe shaft 10

Cap 11

Lower cover 12

Holding part 13

Seal ring 14

Screw thread 15

Syringe needle 2

Syringe 3

Hollow bulb 31

Peristome 32

Threaded portion 321

Push rod 4

Glue head 41

Button portion 42

Needle stand 5

Outer diameter A

External diameter B

The specific embodiment

Embodiment 1: as depicted in figs. 1 and 2: stab in order effectively to prevent syringe needle 1 from exposing because of carelessness fully or medicament leaks, necessary is exactly the capping that the peristome 32 of syringe 3 is complete, could effectively solve the described disappearance of prior art.And the anti-dropped stitch lid of this creation structural improvement mainly is meant pin lid 1, be the one ejection formation, be formed with a cap 11 1 pipe shafts 10 and a lower cover 12 in the leading edge end, wherein lower cover 12 is that an open opening inserts for syringe needle 2, pipe shaft 10 then is that the holding part 13 of hollow is ccontaining for the needle tubing of syringe needle 2, right cap 11 is that an outer diameter A needs the peristome 32 greater than syringe 3, and places in interior side ring and to be provided with seal ring 14, can effectively prevent to leak outside when cap 11 lids place syringe 3 peristomes 32.

This safety injector is when using, as shown in Figure 3 and Figure 4: it is inserted in syringe needle 2 on the needle stand 5 earlier, behind to be injected the finishing, again pin lid 1 is placed on the syringe needle 2, wherein the lower cover 12 external diameter B of this pin lid 1 need the internal diameter less than the peristome 32 of syringe 3, so utilize when shifting the end onto before the push rod 4, needle stand 5 and interlock syringe needle 2 can be lived by fastener by button portion 42, so when push rod 4 is pulled back backward, needle stand 5 and syringe needle 2 cover 1 hollow bulb 31 that will be drawn back in the lump in the hollow syringe 3 with pin, when the time comes then as shown in Figure 4, the seal ring 14 of the cap inboard of pin lid 1 is the peristome 32 of upper shield syringe 3 closely, and makes syringe 3 be a sealed shape, and needle stand 5 and syringe needle 2 are sealed among the hollow syringe 3 fully, effectively prevent from syringe needle 2 false touch improperly and expose to stab, and prevent that syringe 3 residual medicaments from leaking.

Embodiment 2: as shown in Figure 5, wherein pin lid 1 can screw thread 15 structures implement in the pipe shaft 10 of cap inboard, and corresponding to the threaded portion 321 of syringe 3 peristomes 32 inboards, because another kind of syringe 3 structures on the market are provided with threaded portion 321 in peristome 32, for making syringe needle 2 fixing with the mode and the needle stand 5 that screw, therefore, the embodiment 2 of this creation can design at this kind of syringe 3, the mode that pin lid 1 screws with screw thread 15 and the peristome 32 of syringe 3 are made up, thus, can more effectively prevent getting loose of pin lid 1, make pin lid 1 and syringe 3 reach more certain driving fit relation.

Claims

1, a kind of anti-dropped stitch lid structure, the pin lid is the one ejection formation, it is characterized in that: described pin is placed on the leading edge end and is formed with a cap, a pipe shaft and a lower cover, and the external diameter of this cap is greater than the peristome of safety syringe, and places in interior side ring and to be provided with seal ring.

2, anti-dropped stitch lid structure according to claim 1, it is characterized in that: the external diameter of described lower cover needs the peristome less than syringe.

3, anti-dropped stitch lid structure according to claim 1, it is characterized in that: described pin lid also can be formed with helicitic texture around the pipe shaft of cap inboard, and correspondence another kind of syringe cylinder structure on the market is provided with the threaded portion in the peristome inboard.