CN215741008U - Self-destruction syringe - Google Patents

Abstract

The utility model provides a self-destruction syringe, and relates to the technical field of syringes. The novel rubber plug comprises a barrel body, wherein a connecting barrel is arranged at the closed end of the barrel body, a needle head is arranged on the connecting barrel, a rubber plug is arranged in the barrel body in a sliding mode, a push rod is arranged on the rubber plug, a groove is formed in the side face, close to the closed end of the barrel body, of the rubber plug, a pull ring is arranged at the end, located in the barrel body, of the connecting barrel, a convex ring is further arranged on the inner wall of the groove, a plug ball is arranged in the groove and connected with the groove through a connecting rod, the pull ring can be inserted into the groove to be meshed with the convex ring, and the plug ball can be pushed into the connecting barrel.

Description

Self-destruction syringe

Technical Field

The utility model relates to the technical field of syringes, in particular to a self-destruction syringe.

Background

Syringes are a common medical device. As early as the 15 th century, kathler, italian, proposed the principle of the syringe. Gas or liquid is primarily drawn or injected with a needle. Syringes may also be used for injection through rubber septa in medical devices, containers, scientific instruments such as in some chromatography. The self-destruction syringe is a disposable syringe product which can prevent the reuse after being used, and prevents the reuse of the syringe from infecting diseases.

The push rod of the existing self-destruction syringe can be inferred, and the rubber stopper in the syringe can not be pushed any more after the push rod is broken, so that the aim of preventing reuse is finally fulfilled. However, this method has two problems, one is complex operation, the push rod needs to be pulled out and broken along the weak part, and the other is that the user who wants to reuse the syringe can reuse the syringe without breaking the push rod, so that the operation of the existing self-destruction syringe is not simple, and the self-destruction is not mandatory.

Disclosure of Invention

The utility model aims to develop a self-destruction syringe with simple self-destruction operation and forced self-destruction function.

The utility model is realized by the following technical scheme:

self-destruction syringe, the novel nipple rectifier comprises a cylindrical shel, the blind end of barrel is equipped with the connecting cylinder, be equipped with the syringe needle on the connecting cylinder, it is equipped with the rubber buffer to slide in the barrel, be equipped with the push rod on the rubber buffer, the side that the rubber buffer is close to the barrel blind end is equipped with the recess, the tip that the connecting cylinder is located the barrel is equipped with the pull ring, still be equipped with protruding circle on the inner wall of recess, be equipped with stifled ball in the recess, it passes through connecting rod and groove connection, the pull ring can carry out the interlock with protruding circle in inserting the recess, stifled ball can be pushed in the connecting cylinder.

Optionally, the inner cavity of the connecting cylinder is in a truncated cone shape, and one end with a larger diameter faces the rubber plug.

Optionally, a rubber layer is arranged on the inner wall of the inner cavity of the connecting cylinder.

Optionally, the pull ring is arranged along the outer wall of the end of the connecting cylinder, the pull ring is in a circular truncated cone shape, and one end with a smaller diameter faces the rubber plug.

Optionally, the cross-sectional shape of the bead is a right triangle, and the inclined surface is disposed toward the tab.

Optionally, the outer surface of the ball plug is provided with a rubber layer.

Optionally, the blocking ball is arranged non-coaxially with the inner cavity of the connecting cylinder, and the connecting rod is arranged obliquely.

Optionally, one side that the rubber buffer kept away from the barrel blind end is equipped with the draw-in groove, the push rod tip correspondence be equipped with draw-in groove complex fixture block.

Optionally, the side wall of the clamping groove and the outer wall of the clamping block are cambered surfaces, so that the clamping groove and the clamping block are clamped.

The utility model has the beneficial effects that:

the utility model has simple use and simple and convenient operation, can automatically block the connecting cylinder after the rubber plug is pushed to the bottom and injection is finished, and can lead the connecting cylinder to be forcibly self-destructed, and the rubber plug is fixed at the closed end of the cylinder body, thus leading the injector to be incapable of being used any more, needing not to pull out the push rod to be broken off, reducing the fussy operation procedure of self-destruction after the injector is used, and preventing a user from continuously using the push rod without breaking off.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a block diagram of the present invention;

fig. 2 is an enlarged view of a portion a in fig. 1.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art can appreciate, the described embodiments may be modified in various different ways, without departing from the spirit or scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present invention.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 and 2, the utility model discloses a self-destruction syringe, which comprises a barrel 11, wherein a connecting barrel 21 is arranged at the closed end of the barrel 11, a needle 3 is arranged on the connecting barrel 21, a rubber plug 13 is arranged in the barrel 11 in a sliding manner, a push rod 12 is arranged on the rubber plug 13, a groove 16 is arranged on the side surface of the rubber plug 13 close to the closed end of the barrel 11, a pull ring 22 is arranged at the end part of the connecting barrel 21 positioned in the barrel 11, a convex ring 17 is further arranged on the inner wall of the groove 16, a blocking ball 19 is arranged in the groove 16 and is connected with the groove 16 through a connecting rod 18, the pull ring 22 can be inserted into the groove 16 to be meshed with the convex ring 17, and the blocking ball 19 can be pushed into the connecting barrel 21.

In one embodiment of the present application, the end of the syringe 1 is provided with a needle seat 2, the syringe 1 is connected with a needle 3 through the needle seat 2, and the needle 3 is further provided with a protective cover.

The needle cylinder 1 comprises a cylinder body 11, a slidable rubber plug 13 is arranged in the cylinder body 11, and the rubber plug 13 slides in the cylinder body 11 to perform piston movement. The needle seat 2 is arranged at the closed end of the barrel body 11, a push rod 12 is arranged on one side, away from the needle seat 2, of the rubber plug 13, and the push rod 12 pushes the rubber plug 13 to perform piston movement in the barrel body 11.

The side that rubber buffer 13 is close to needle file 2 is the cambered surface, makes its blind end cooperation with barrel 11 closely paste, the side that needle file 2 was kept away from to rubber buffer 13 is equipped with draw-in groove 15, draw-in groove 15 is the circular recess, the lateral wall of draw-in groove 15 is the cambered surface form, and push rod 12 tip is equipped with the fixture block 14 with draw-in groove 15 complex, fixture block 14 shape is the same with draw-in groove 15, because the lateral wall of draw-in groove 15 and the outer wall of fixture block 14 are the cambered surface, make both can the joint, receive under great external force at push rod 12, can pull out fixture block 14 from draw-in groove 15.

Needle file 2 includes connecting cylinder 21, connecting cylinder 21 is round platform shape, the inner chamber of connecting cylinder 21 also is round platform shape, inside the great one end of connecting cylinder 21 diameter stretched into 11 blind ends of barrel, connecting cylinder 21 still is equipped with pull ring 22 on being located the tip in barrel 11, pull ring 22 encircles the outer tip setting of connecting cylinder 21, pull ring 22 is round platform shape, the less one end of pull ring 22 diameter is towards rubber buffer 13, the inner intracavity wall of connecting cylinder 21 still is equipped with the one deck rubber layer.

The side surface of the rubber stopper 13 close to the closed end of the barrel body 11 is provided with a groove 16 matched with the pull ring 22, the groove 16 is a circular groove with the inner diameter same as the maximum outer diameter of the pull ring 22, the groove 16 and the pull ring 22 are arranged coaxially, the inner wall of the groove 16 is provided with a convex ring 17, the convex ring 17 is arranged around the circumference of the inner wall of the middle part of the groove 16, the cross section of the convex ring 17 is in the shape of a right triangle, and the inclined plane is arranged towards the pull ring 22, the convex ring 17 and the rubber plug 13 are made of the same material, when the push rod 12 pushes the rubber plug 13 to move to the bottom, the pull ring 22 passes through the convex ring 17 and is clamped at the bottom of the groove 16, at the moment, the convex ring 17 is meshed with the pull ring 22, so that the rubber plug 13 is fixed with the connecting cylinder 21, after the rubber plug 13 is fixed, the push rod 12 is pulled to reach a certain pulling force, and then the clamping block 14 at the end part of the push rod 12 is pulled out from the clamping groove 15 at the side surface of the rubber plug 13, so that the rubber plug 13 is left at the closed end of the barrel body 11.

Still be equipped with stifled ball 19 in the recess 16, stifled ball 19 is used for blockking up connecting cylinder 21, stifled ball 19 is the spheroid structure, 19 outward appearances of stifled ball are equipped with one deck rubber layer, stifled ball 19 passes through connecting rod 18 and is connected bottom recess 16, and connecting rod 18 slopes to set up, connecting rod 18 one end is connected with stifled ball 19, and the other end is connected bottom recess 16, stifled ball 19 not with connecting cylinder 21 coaxial line, stifled ball 19 off-centre sets up, when making rubber buffer 13 promote stifled ball 19 motion, stifled ball 19 makes it gradually with connecting cylinder 21 coaxial line along the motion of 21 inner walls of connecting cylinder, and connecting rod 18 buckles this moment and is broken, makes stifled ball 19 stay in the cavity of connecting cylinder 21, and the rubber layer of 19 surfaces of stifled ball and the 21 inner walls of connecting cylinder makes stifled ball 19 block up connecting cylinder 21 completely.

When the utility model is not used, the ball block 19 does not enter the connecting cylinder 21, the pull ring 22 does not engage with the convex ring 17, after the medicine is sucked by the push rod 12, the push rod 12 is pushed to discharge air, injection is carried out, after injection is finished, the rubber plug 13 is pushed to be low by the push rod 12, the ball block 19 enters the connecting cylinder 21, the connecting rod 18 is broken along with the movement of the ball block 19, the ball block 19 is left in the connecting cylinder 21, the pull ring 22 engages with the convex ring 17, and the rubber plug 13 is fixed at the closed end of the cylinder body 11, so that the injector can not be used any more.

The utility model has simple use and simple and convenient operation, the rubber plug 13 is pushed to the bottom, the connection barrel 21 can be automatically blocked after injection is finished, and the rubber plug 13 is fixed at the closed end of the barrel body 11, so that the injector can not be used any more, the push rod 12 does not need to be pulled out and broken, the fussy operation procedure that the injector needs to be self-destructed after being used is reduced, and the user is prevented from continuously using the push rod 12 without breaking.

The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the technical solutions of the present invention, so long as the technical solutions can be realized on the basis of the above embodiments without creative efforts, which should be considered to fall within the protection scope of the patent of the present invention.

Claims (9)

1. A self-destructing syringe, comprising:

a barrel;

the connecting cylinder is arranged at the closed end of the cylinder body;

the needle head is arranged on the connecting cylinder;

the rubber plug is arranged in the barrel in a sliding manner;

the push rod is arranged on the rubber plug;

the groove is arranged on the side surface of the rubber plug close to the closed end of the cylinder body;

the pull ring is arranged at the end part of the connecting cylinder in the cylinder body;

the convex ring is arranged along the inner wall of the groove;

the blocking ball is arranged in the groove and is connected with the groove through a connecting rod;

wherein, the pull ring can be inserted into the groove to be meshed with the convex ring, and the blocking ball can be pushed into the connecting cylinder.

2. The self-destructing syringe according to claim 1, wherein the connecting barrel has a truncated cone-shaped inner cavity and the larger diameter end faces the rubber stopper.

3. The self-destructing syringe according to claim 2, wherein a rubber layer is provided on the inner wall of the inner cavity of the connecting barrel.

4. The self-destructing syringe according to claim 3, wherein the pull ring is arranged along the outer wall of the connecting cylinder end, the pull ring is in a truncated cone shape, and the end with the smaller diameter faces the rubber plug.

5. The self-destruct syringe of claim 4, wherein the cross-sectional shape of the bead is a right triangle and the bevel is disposed toward the pull ring.

6. The self-destructing syringe according to claim 5, wherein the outer surface of the ball stopper is provided with a rubber layer.

7. The self-destructing syringe according to claim 6, wherein the ball stopper is arranged non-coaxially with the lumen of the connecting barrel and the connecting rod is arranged obliquely.

8. The self-destruction syringe as claimed in claim 7, wherein a slot is provided on one side of the rubber plug away from the closed end of the barrel, and a block fitting the slot is correspondingly provided on the end of the push rod.

9. The self-destruction syringe of claim 8, wherein the side wall of the locking groove and the outer wall of the locking block are curved surfaces, so that the locking groove and the locking block are locked.

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