CN201930353U - Disposable core and bar separated self-destruction injector - Google Patents

Abstract

The utility model discloses a disposable core bar separated self-destruction injector, which consists of an outer sleeve, a snap ring, a rubber plug, a core bar and a press handle, wherein the core bar is connected with grooves on 1 to 3 circles of arc-shaped loading surfaces of at the tail end of the core bar of the press handle; the inner wall of the press handle is provided with arc-shaped bumps; the grooves are sleeved with the arc-shaped bumps on the inner wall of the press handle in a matching way; the tail end of the core bar is provided with a bayonet position; and the tail part of the outer sleeve is provided with a one-way snap ring. After normal use of the disposable core bar separated self-destruction injector, the rubber plug and the core bar are clamped inside the outer sleeve and cannot be pulled out, and the press handle is separated from the core bar if the core bar is forcedly pulled out of the outer sleeve, so that the aim of avoiding reusing is fulfilled. Only the structure of the core bar is improved, so that little cost is increased compared with the ordinary core bar material and process. The disposable core bar separated self-destruction injector can be applied to snap ring self-destruction injectors in any size and specification.

Description

Disposable use core bar separate type self-destroyed syringe

Technical field

This utility model relates to a kind of self-destroyed syringe that adopts the separate type core bar structure, belongs to medical instruments field.

Background technology

Nowadays disposable sterilized injector is widely used, but people are still being perplexed in the repeated use of disposable syringe, so disposable self-destruction syringe just arises at the historic moment.At present, most of self-destroyed syringe adopts the snap ring-type self-distruction structure, but because snap ring is to cooperate by machinery to be embedded in the overcoat end, under big pulling force, there is the isolating possibility of core bar and overcoat, can causes core bar to be drawn out of and syringe is reused, thereby make the self-destroying function forfeiture.

Summary of the invention

In order to overcome the thoroughly deficiency of self-destruction of existing self-destroyed syringe, this utility model provides a kind of Disposable, self-destroying syringe that adopts the separate type core bar structure, this self-destroyed syringe not only satisfies the function of common self-destroyed syringe, and has stopped reusable by force possibility.

This utility model solves the problems of the technologies described above the technical scheme that is adopted: it is by forming by hands, snap ring, core bar, overcoat, plug, sheath, entry needle.Core bar is connected with the groove that encloses the arc sections by the core bar tail end of hands set 1-3, be provided with arc-shaped protrusions by the hands inwall, the socket that matches with arc-shaped protrusions of above-mentioned groove by the hands inwall, the core bar tail end is provided with the bayonet socket position, the afterbody of overcoat is provided with unidirectional snap ring, bayonet socket position on the core bar and snap ring form latch-up structure, in the time of can guaranteeing before injection, to extract liquid, and core bar and by enough firmness are arranged between the hands.After injection was finished, meeting of bayonet socket position and snap ring locking on the core bar reached the effect of self-destruction.If core bar is extracted out from overcoat by force, press hands so and can separate with core bar.Stop reusable purpose thereby reach.

The beneficial effects of the utility model are: function, operation all are as good as with generic card ring type self-destroyed syringe, but have fundamentally stopped reusable possibility after using.And this utility model just makes improvement from core bar structure, and is atomic compared with the cost that common core bar material and technology are increased, and easily is automated batch process, and can be extended to the snap ring-type self-destroyed syringe of any model specification.

Description of drawings

Fig. 1 self-destroyed syringe overall structure figure;

Fig. 2 presses the hands partial enlarged drawing;

Fig. 3 core bar tail end enlarged drawing.

The specific embodiment

Below in conjunction with drawings and Examples this utility model is further specified.

Fig. 1 is overall structure figure after the self-destroyed syringe self-destruction, and wherein core bar 3 forms latch-up structure with snap ring 2, reaches the self-destruction effect.If this moment, desire was pulled out core bar by force, because core bar and shown in Figure 2 only being in the same place shown in Figure 3 by the arc groove 9 and the structural grouping of arc-shaped protrusions 8 by hands, the separating force that can bear is limited, in case surpass limit value, core bar 4 will with separate by hands 5, stop core bar be drawn out cause syringe reusable may.

This utility model embodiment syringe is by forming by hands 1, snap ring 2, core bar 3, overcoat 4, plug 5, sheath 6, entry needle 7.Core bar 3 with by being connected of hands 1 by the tiny little groove 9 of arc of core bar tail end two circle with by the socket that matches of the tiny arc-shaped protrusions 8 of two circles is arranged by the hands inwall, groove 9 and projection 8 are just in time coincide.Core bar 3 tail ends are provided with the bayonet socket position, and the afterbody of overcoat 4 is provided with unidirectional snap ring 2, bayonet socket position on the core bar 3 can and snap ring 2 form latch-up structures,, in the time of can guaranteeing before injection extraction liquid, core bar and by enough firmness are arranged between the hands.After injection was finished, meeting of bayonet socket position and snap ring 2 on the core bar formed latch-up structures, reach the effect of self-destruction.If core bar 3 is extracted out from overcoat by force, press hands 1 so and can separate with core bar 3.Stop reusable purpose thereby reach.

Claims (2)

1. disposable use core bar separate type self-destroyed syringe, by overcoat, snap ring, plug, core bar, form by hands, it is characterized in that: core bar is connected with the groove that encloses the arc sections by the core bar tail end of hands set 1-3, be provided with arc-shaped protrusions by the hands inwall, the socket that matches with arc-shaped protrusions of above-mentioned groove by the hands inwall, the core bar tail end is provided with the bayonet socket position, and the afterbody of overcoat is provided with unidirectional snap ring, and bayonet socket position on the core bar and snap ring form latch-up structure.

2. disposable use core bar separate type self-destroyed syringe according to claim 1 is characterized in that: described core bar with two circle arc grooves are arranged by the link of hands; By the hands inwall the tiny arc-shaped protrusions of two circles is arranged.

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