CN2607145Y - Two-part self-destroying type safety syringe - Google Patents

Abstract

The utility model provides a two-piece self-destructed safe injector, which comprises a needle, a needle seat, a needle pintle and a syringe, wherein the top of the needle seat has a needle, the top of the syringe minimizes to be a syringe neck, and the needle seat is arranged in the syringe neck. The utility model is characterized in that: the needle seat and the inner surface of the syringe neck is damping sealed, the top of the inner core needle pintle which is corresponding to the needle seat is provided with a conversed hook, and a spine which is corresponding to the syringe at the bottom of the needle seat. When inject, push the needle pintle, the liquid medicine will be injected to the body, at the tome the liquid medicine is injected over, the spine at the top of the needle pintle will protrude to the outside of the needle seat bottom to realize self-destruction, simultaneously the conversed hook also penetrate into the inner core of the needle seat, in the process of the returning extract, the conversed hook which is fixed at the top of the needle pintle withdraw the needle seat with the needle into the syringe, to completely close the needle into the syringe, to prevent the needle lacerate the skin to cause the infection. The injector need not the rubber sealed device, completely eliminate the remains of the easy oxide, and the utility model is simple in structure, and has a good operation performance.

Description

Two self-destroy safety injectors

Affiliated technical field

This utility model provides a kind of two self-destroy safety injectors, belongs to the disposable syringe technical field.

Background technology

Present disposable syringe is provided with injection back self-destroying function more, prevents from repeatedly to use, and causes adverse consequences to patient.After syringe used the contact sick body, outside contaminated syringe needle just was exposed to, medical worker or cleaning employee did not note slightly, are very easily infected by needle sting.At the problems referred to above, existing at present technology report about safe re-use preventing once-used syringe, as Chinese patent communique disclosed utility model patent on April 17th, 2002: the safety self-destructing disposable sterilized syringe, the patent No.: 01221139, by overcoat, core bar in the overcoat, the sealing ring of core bar head, the syringe needle that is connected with overcoat, and pinhead sleeve etc. form, the forward connection tube of its overcoat, the needle stand of syringe needle is installed in the overcoat connection tube, be equipped with spring at the outer wall of needle stand, and core bar is a hollow pipe, bottom plug is installed on top at core bar, the core bar bottom plug matches with the afterbody of needle seat, and after liquid medicine injection injection finished, core bar bottom plug and syringe needle were under the effect of spring force automatically in the indentation core bar, prevent syringe needle from scratching skin and cause infection, avoid after the self-destruction reusing.Defective is that parts are many, complex structure, and cost height, the sealing ring of core bar head often adopt elastomeric material to make, and easily producing residual oxide influences medical effect.

The utility model content

The purpose of this utility model provides a kind of two self-destroy safety injectors that can overcome above-mentioned defective, simple in structure, excellent working performance.Its technical scheme is:

Comprise syringe needle, needle holder, pintle and syringe, wherein a syringe needle is put on the top of needle holder, the top of syringe attenuates and is the tube neck, needle holder places in the neck, it is characterized in that: needle holder seals with the inner surface damping of tube neck, top corresponding to the inner core pintle of needle holder is provided with down grapple, and also to be provided with spine corresponding with the syringe of needle holder bottom outside on the top of pintle simultaneously.

Described two self-destroy safety injectors, tube neck inwall is provided with damping ring, and needle holder adopts the Winged needle seat and the inner surface damping of tube neck to seal.

Its operation principle is: promote pintle during injection, medicinal liquid injects in the body, in the moment that injecting liquid drug is ended, the vertical spine of pintle passes the syringe of needle holder bottom outside and realizes self-destruction, the grapple that falls simultaneously also thrusts the inner core of needle holder, in the process of pumpback, be fixed on the vertical grapple of pintle needle holder is together drawn back syringe together with syringe needle, syringe needle is completely enclosed within the syringe, prevent that syringe needle from scratching skin and causing infection.

This utility model compared with prior art has the following advantages:

1, need not any the 3rd adnexa auxiliary, liquidate mutually by self part and can realize self-destruction;

2, utilize the needle holder and the damping sealing of tube neck inner surface to realize self-styled function, got rid of the employing rubber seal, produced residual oxide and influence medical effect;

3, owing to the function of grapple, thereby end at injecting liquid drug, the pumpback pintle can be completely enclosed within syringe needle in the syringe smoothly, guarantees that medical worker's skin avoids scratching and reaching security purpose;

4, the basic tight in the inside of syringe guarantees the medicinal liquid noresidue;

5, simple and reasonable, parts are few, and cost is low.

Description of drawings

Fig. 1 is the structural representation of this utility model embodiment.

The specific embodiment

1, syringe needle 2, needle holder 3, damping ring 4, fall grapple 5, syringe 6, spine 7, pintle 8, tube neck

The top of syringe 5 attenuates and is tube neck 8, tube neck 8 inwalls are provided with damping ring 3, wing needle holder 2 places in the neck 8 and with its inner surface damping and seals, a syringe needle 1 is put on the top of needle holder 2, corresponding to the inner core of needle holder 2 and the syringe 5 of needle holder 2 bottom outside, the top correspondence of pintle 7 is provided with down grapple 4 and spine 6.

Claims (2)

1, a kind of two self-destroy safety injectors, comprise syringe needle (1), needle holder (2), pintle (7) and syringe (5), wherein a syringe needle (1) is put on the top of needle holder (2), the top of syringe (5) attenuates and is tube neck (8), needle holder (2) places in the neck (8), it is characterized in that: needle holder (2) seals with the inner surface damping of tube neck (8), top corresponding to the inner core pintle (7) of needle holder (2) is provided with down grapple (4), and also to be provided with spine (6) corresponding with the syringe (5) of needle holder (2) bottom outside on the top of pintle (7) simultaneously.

2, two self-destroy safety injectors as claimed in claim 1 is characterized in that: tube neck (8) inwall is provided with damping ring (3), and needle holder (2) adopts the Winged needle seat and the inner surface damping of tube neck (8) to seal.