CN111214728B - Disposable self-destroying syringe - Google Patents

Abstract

The invention relates to a disposable self-destroying injector, which consists of a cross core bar, a sleeve, an upper cover, a lower cover, a breakable belt, a cylindrical groove and a rubber plug, wherein the cross core bar and the breakable belt are arranged in the upper cover and the lower cover which are fastened, the cylindrical groove in the breakable belt is arranged in the rubber plug, when the rubber plug is arranged in the sleeve and a push-pull handle is pushed, the groove on a 60-degree chamfer in the cross core bar gradually moves towards the axis direction when the groove on the 60-degree chamfer in the cross core bar moves forwards, the inclined surface in the top end of the lower cover is firstly promoted to be separated from the inclined surface on the top end of the other side of the 30-degree V-shaped hook in the breakable belt, and simultaneously the breakable mark point is broken, namely, the double functions of falling off at one place and breaking at the other place are achieved, and the rubber plug can not move outwards to extract liquid medicine at the moment, so that automatic destroying is achieved.

Description

Disposable self-destruct syringe

technical field

The invention relates to an injector device, in particular to a disposable self-destruct injector which can be automatically destroyed after the injection is completed.

Background technique

The health department stipulates that disposable syringes should be destroyed on the spot after use to prevent repeated use. From the perspective of preventing infectious diseases, this measure is to cut off the transmission route, control the source of infection, protect susceptible people and eliminate pathogens. However, because the material used in the disposable syringe is made of high-molecular polypropylene, it can still be used several times after it is used once. This situation is very common in some private clinics or private clinics in remote mountainous areas. Self-destructing syringes are available, but due to their high cost or other reasons, they have not been fully promoted.

Contents of the invention

In order to overcome the disadvantage that the above-mentioned syringe fails to achieve self-destruction after use and can still be reused, the present invention provides a disposable self-destruction syringe, which can be automatically destroyed after injection, avoiding the disadvantages of repeated use.

The technical scheme adopted by the present invention to solve its technical problems is that it is composed of a cross mandrel, a sleeve, an upper cover, a lower cover, a breakable belt, a cylindrical groove and a rubber plug, and the top cross on one side of the cross mandrel The two sides of the intersection are respectively provided with 60-degree chamfers inwardly, and a groove is provided on each 60-degree chamfer, and a rectangular through hole is provided at the lower end of the groove, and a protruding step is provided outside the groove. There is a push-pull handle on the other side, and there are four claws in equal parts at one end of the easy-to-break belt. There is a 60-degree chamfer at the contact point between the top of the four claws and the cylindrical groove, which is also a breakable crease. point, wherein a 30-degree V-shaped hook is provided at the other end of each claw, a slope is provided at the top of the other side of the 30-degree V-shaped hook, a stepped through hole is provided at the top of the upper cover, and a stepped through hole is provided at the other end of the hook. There is a concave card slot on the outer side of the lower cover, a through hole on the top of the lower cover, and a slope at the through hole, and a convex card slot on the inner side of the other end. The other side of the hook is put into the groove set on the 60-degree chamfer in the cross core rod. The protruding steps set on the outside of the inner groove are in contact with each other to prevent the cross core rod from falling off. After the lower cover passes through the cylindrical groove connected by the frangible belt, the slope inside the top of the lower cover is aligned with the 30-degree angle inside the frangible belt. The inclined surface at the top of the other side of the V-shaped hook is in contact with each other to prevent the breakable belt from falling off. Finally, fasten the concave-convex card slots set on the inner and outer sides of the upper and lower covers, and at the same time install the cylindrical groove connected by the breakable belt. Put the rubber plug into the casing. The method of use is to fasten the upper cover and the lower cover when pumping the medicine, so that the cross core rod and the easy-to-break belt are pinned together, and then pulled outward. When pushing and pulling the handle and driving the rubber plug to move outward, it plays the role of extracting the liquid medicine. When pushing the medicine, although the cross core rod and the breakable belt are in the area where the upper cover and the lower cover are fastened to each other, the cross There will be no restraint between the core rod and the breakable belt. At this time, when the push-pull handle is pushed, the groove on the 60-degree chamfer in the cross core rod will push forward the breakable belt installed in the groove. When the other side of the 30-degree V-shaped hook inside moves, because the inner hole of the needle is very thin, it takes a certain force to push the liquid medicine, and because the cross core rod pushes the rubber plug to move in the casing to push the liquid medicine Also will produce frictional force, the other side of the 30-degree V-shaped hook in the easy-break belt will gradually move towards the axial direction through the action of these forces, and this movement will at first impel the slope in the top of the lower cover to align with the easy-break hook. At the same time as the slope at the top of the other side of the 30-degree V-shaped hook in the belt is separated from each other, the four claws at the breakable crease point and the cylindrical groove will be broken at the same time, that is, one part will fall off, and the other will fall off. The double function of one break, at this time, the rubber stopper will not be able to move outward to extract the liquid medicine, so as to achieve automatic destruction.

The beneficial effect of the invention is that it can be automatically destroyed after the injection is completed, avoiding the disadvantage of repeated use.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a structural sectional view of the present invention.

In the figure 1. Cross core rod, 2. Sleeve, 3. Upper cover, 4. Lower cover, 5. Breakable belt, 6. Cylindrical groove, 7. Rubber plug.

Implementation

It is composed of a cross core rod (1), a sleeve (2), an upper cover (3), a lower cover (4), a breakable belt (5), a cylindrical groove (6) and a rubber plug (7). The two sides of the top cross on one side of the cross core rod (1) are respectively provided with 60 degree chamfers inwardly, and a groove is provided on each 60 degree chamfer, and a rectangular through hole is provided at the lower end of the groove. There is a protruding step on the outside of the groove, and a push-pull handle on the other side. Four equal parts of four claws are arranged on one end of the breakable belt (5). There is a 60-degree chamfer at the contact point, which is also a breakable crease point. There is a 30-degree V-shaped hook at the other end of each claw, and a 30-degree V-shaped hook at the top of the other side of the 30-degree V-shaped hook. The slope is provided with a stepped through hole at the top of the loam cake (3), and a concave card groove is provided at the outside of the other end, and a through hole is provided at the top of the lower cover (4), and a slope is provided at the through hole. The inner side of the other end is provided with a convex card slot, first put the other side of the 30-degree V-shaped hook set in the frangible belt (5) into the 60-degree chamfer set in the cross core rod (1). In the groove of the upper cover (3), after the upper cover (3) passes through the push-pull handle of the cross core rod (1), the inner side of the step through hole in the top of the upper cover (3) and the outer side of the groove in the cross core rod (1) are set. to prevent the cross core rod (1) from falling off, after the lower cover (4) passes through the cylindrical groove (6) in the frangible belt (5), the inclined surface in the top end of the lower cover (4) Contact with the slope at the top of the other side of the 30-degree V-shaped hook in the breakable belt (5) to prevent the breakable belt (5) from falling off, and finally put the upper cover (3) and the inner and outer sides of the lower cover (4) Fasten the concave-convex grooves, and at the same time put the cylindrical groove (6) in the breakable belt (5) into the rubber plug (7), and put the rubber plug (7) into the casing (2) .

It should be noted that the "left", "right", "front", "rear", "inner", "outer", "upper", "lower" mentioned in this document indicate the orientation or positional relationship is Based on the working state or the positional relationship shown in the drawings, it is only for the convenience of describing the technical solution and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed or operated in a specific orientation, Therefore, it should not be understood as a limitation on the technical solution, and the connection relationship may refer to a direct connection relationship or an indirect connection relationship.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (2)

1. Disposable self-destructing syringe, which is characterized in that it is composed of a cross core rod, a sleeve, an upper cover, a lower cover, a frangible belt, a cylindrical groove and a rubber plug, and the top of one side of the cross core rod crosses There are 60-degree chamfers on each of the two sides, and a groove is provided on each 60-degree chamfer, a rectangular through hole is provided at the lower end of the groove, and a protruding step is provided on the outside of the groove. There is a push-pull handle on one side, and four equally divided claws are set on one end of the easy-to-break belt. There is a 60-degree chamfer at the contact point between the top of the four claws and the cylindrical groove, which is also the easy-to-break crease point , wherein a 30-degree V-shaped hook is provided at the other end of each claw, a slope is provided at the top of the other side of the 30-degree V-shaped hook, a stepped through hole is provided at the top of the upper cover, and a There is a concave card slot on the outside, a through hole on the top of the lower cover, and a slope at the through hole, and a convex card slot on the inner side of the other end. First, put the 30-degree V-shaped hook in the breakable belt The other side of the cross core rod is put into the groove set on the 60-degree chamfer in the cross core rod. After the upper cover passes through the push-pull handle of the cross core rod, the inside of the step through hole in the top of the The protruding steps set on the outside of the groove of the lower cover are in contact with each other to prevent the cross core rod from falling off. After the lower cover passes through the cylindrical groove connected by the frangible belt, the slope in the top of the lower cover is aligned with the 30-degree V inside the frangible belt. The inclined surface at the top of the other side of the hook is in contact with the top of the other side of the hook to prevent the breakable belt from falling off. Finally, fasten the concave-convex card slots set on the inner and outer sides of the upper and lower covers, and at the same time put the cylindrical groove connected by the breakable belt into the Put the rubber plug into the casing. 2. The method of using the disposable self-destructing syringe according to claim 1, characterized in that: when the medicine is pumped, the upper cover and the lower cover are fastened to each other, so that the cross core rod and the breakable belt are restrained together , when the push-pull handle is pulled outward and the rubber plug is driven to move outward, it plays the role of extracting the liquid medicine, and when pushing the medicine, although the cross core rod and the breakable belt are fastened between the upper cover and the lower cover area, but the cross core rod and the fragile belt will no longer have a restraining effect on each other. At this time, when the push-pull handle is pushed, the groove on the 60-degree chamfer inside the cross core rod is pushed forward and installed in the groove When the other side of the 30-degree V-shaped hook in the inner breakable belt moves, because the inner hole of the needle is very thin, it takes a certain force to push the liquid medicine, and because the cross core rod pushes the rubber plug in the casing When moving and pushing the liquid medicine, friction force will also be generated. Through the action of these forces, the other side of the 30-degree V-shaped hook in the breakable belt will gradually move towards the axis. When the inclined surface of the easy-breaking belt is separated from the inclined surface at the top of the other side of the 30-degree V-shaped hook in the easy-breaking belt, it will also break the four claws at the easy-breaking crease point and the cylindrical groove at the same time, that is, the One part falls off and the other part breaks. At this time, the rubber stopper will not be able to move outward to extract the liquid medicine, so as to achieve automatic destruction.

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