CN201643254U - Disposable self-destructive type syringe - Google Patents

Abstract

The utility model discloses a disposable self-destructive type syringe comprising a core bar, a jacket, a needle stand, a needle tube and a protective cap, wherein the core bar is arranged in the jacket and is connected with the needle stand, the needle tube is arranged on the needle stand, the protective cap is also covered on the needle stand, a stop blocking edge and an inner flange are arranged on the jacket, and the corresponding position of the needle stand and the inner flange is provided with an outer groove; and one end of the jacket, which is far away from the stop blocking edge, is also provided with a retreat stop groove, and a flange is arranged on the core bar. The utility model effectively avoids the secondary pain of a patient, which is caused by the too deep puncture or the too shallow puncture of a needle point and the movement of the jacket. Moreover, the utility model has simple structure, convenient operation and low cost and is suitable for extensive populations to use.

Description

Single-Use Auto-Disable Syringes

Technical field

This utility model relates to a kind of aseptic medical equipment that once uses, and specifically is a kind of Single-Use Auto-Disable Syringes.

Background technology

Disposable syringe is a kind of disposable medical instrument, clinical at home extensive use.At present domestic disposable syringe generally has two kinds of plain edition and self-destruction typies.The plain edition syringe only has basic functions such as the extraction medicinal liquid of syringe and liquid medicine injection, has following 2 deficiencies: the one, do not have protection to needle tip, and in use if operation is careless, needle point is easily stabbed medical personnel, causes cross infection; The 2nd, do not have the effect of unmaking to core bar, reused by bad personnel easily.Though self-destruction syringe has had the function that needle point guard and core bar unmake, but in the injection manipulation, because the retraction of core bar operation (to reach the effect of needle point guard) needs certain active force, causes needle point to move at the intravital secondary of people, will make patient produce pain.Therefore need conventional injector is improved.

The utility model content

The purpose of this utility model is the deficiency that overcomes above-mentioned existence, provides a kind of easy to operate, and avoids needle point to thrust dark or cross shallow and overcoat moves the Single-Use Auto-Disable Syringes that causes patient's secondary pain.

In order to reach above technique effect, the technical scheme of taking of the present utility model is: Single-Use Auto-Disable Syringes, comprise core bar, overcoat, needle stand, needle tubing and protective cap, described core bar is arranged in the overcoat and with needle stand and is connected, needle tubing is arranged on the needle stand, also be covered with protective cap on the needle stand, it is characterized in that: described overcoat is provided with spacing rib and inward flange, and needle stand and inward flange corresponding position are provided with outer groove; Described overcoat also is provided with back stop slot away from spacing rib one end, also is provided with flange on the described core bar; Described core bar top is a nose cone, and needle stand is provided with the cross recess of band tapering, and core bar is connected with needle stand by the cross recess of nose cone with the band tapering.

The spacing rib that this utility model overcoat front end is provided with can carry out spacingly to the subcutaneous muscle degree of depth that needle point thrusts the patient, and it is dark or shallow excessively to avoid needle point to thrust, therefore easy to operate; And when after injection is finished, bouncing back core bar, can make this grade limit be close to patient skin, prevent that overcoat from moving forward and backward, having avoided because of overcoat moves is the secondary pain that a recessed active force that contracts during core bar to overcoat causes the patient, and is once to use the type self-destroyed cross infection of avoiding the patient because of it.The letter of this utility model structure, single operation convenience, with low cost are fit to all kinds of occasions and use, and have favorable economic benefit and social benefit.

Description of drawings

Overall structure sketch map before Fig. 1, this utility model use

The local enlarged diagram of outer groove of needle stand and overcoat inward flange cooperation place when Fig. 2, Fig. 1 state

Fig. 3, this utility model are injected status architecture sketch map when putting in place

The local enlarged diagram in core bar and needle stand junction when Fig. 4, Fig. 3 state

Structural representation when core bar was withdrawn after Fig. 5, this utility model injection were finished

The local enlarged diagram in core bar flange when Fig. 6, Fig. 5 state and overcoat back stop slot place

Among the figure: 1, core bar 1.1, flange 2, overcoat 2.1, spacing rib 2.2, inward flange 2.3, back stop slot 3, needle stand 3.1, outer groove 3.2, cross recess 4, needle tubing 5, protective cap

The specific embodiment

Below in conjunction with accompanying drawing the technical solution of the utility model is described further:

Shown in Fig. 1-6: Single-Use Auto-Disable Syringes, comprise core bar 1, overcoat 2, needle stand 3, needle tubing 4 and protective cap 5, described core bar 1 is arranged in the overcoat 2 and with needle stand 3 and is connected, needle tubing 4 is arranged on the needle stand 3, also be covered with protective cap 5 on the needle stand 3, described overcoat 2 is provided with spacing rib 2.1 and inward flange 2.2, and needle stand 3 is provided with outer groove 3.1 with inward flange 2.2 corresponding positions; Described overcoat 2 also is provided with back stop slot 2.3 away from spacing rib 2.1 1 ends, also is provided with flange 1.1 on the described core bar 1.Described core bar 1 top is a nose cone, and needle stand 3 is provided with the cross recess 3.2 of band tapering, and core bar 1 is connected with needle stand 3 by the cross recess 3.2 of nose cone with the band tapering.

Before use, overcoat inward flange 2.2 agrees with the outer groove 3.1 of needle stand, to realize the fixing and sealing of needle stand and overcoat.In when injection, take off protective cap 5, return core bar 1 and extract medicinal liquid, when the patient being carried out subcutaneous muscle puncture, it is spacing to utilize the spacing rib 2.1 of overcoat to carry out, and to limit the degree of depth that needle tubing thrusts human body, it is dark or shallow excessively to avoid needle tubing to thrust.Shift core bar 1 bottom of overcoat 2 onto, finish action of injection, this moment, the nose cone of core bar 1 entered in the cross recess 3.2 of needle stand 3 band taperings, and core bar 1 head and the cross recess 3.2 of needle stand 3 band taperings are agreed with, and had therefore reduced the two and had agreed with exerting oneself of process.After having injected, with hands fixed jacket 2, make the spacing shelves of overcoat limit 2.1 be adjacent to patient skin, draw back core bar 1, make needle tubing 4 break away from patient's muscle, retraction causes overcoat 2 inner chambers.Continue to draw back the afterbody of core bar 1 to overcoat 2 this moment, and core bar flange 1.1 and overcoat back stop slot 2.3 are agreed with, and like this, core bar 1 can not slide to overcoat 2 front ends under the effect of less power, makes needle point expose overcoat 2 again.At the place of fractureing of core bar 1 core bar is fractureed at last, finish unmaking of syringe.

Claims (2)

1. Single-Use Auto-Disable Syringes, comprise core bar (1), overcoat (2), needle stand (3), needle tubing (4) and protective cap (5), described core bar (1) is arranged in the overcoat (2) and with needle stand (3) and is connected, needle tubing (4) is arranged on the needle stand (3), also be covered with protective cap (5) on the needle stand (3), it is characterized in that: described overcoat (2) is provided with spacing rib (2.1) and inward flange (2.2), and needle stand (3) is provided with outer groove (3.1) with inward flange (2.2) corresponding position; Described overcoat (2) also is provided with back stop slot (2.3) away from spacing rib (2.1) one ends, and described core bar (1) is provided with flange (1.1).

2. Single-Use Auto-Disable Syringes according to claim 1, it is characterized in that described core bar (1) top is a nose cone, needle stand (3) is provided with the cross recess (3.2) of band tapering, and core bar (1) is connected with needle stand (3) by the cross recess (3.2) of nose cone with the band tapering.

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