CN209004904U - A kind of syringe - Google Patents

Abstract

The utility model provides a kind of syringe, including needle cap, syringe needle and syringe, it is characterised in that: needle cap and syringe needle, syringe needle pass through forward and reverse helical structure with syringe respectively and connect, and the helical structure is made of a circle screw thread；The syringe needle lower end outside has symmetrical wing lug, and syringe needle lower end outside helical structure is located above wing lug.The utility model effectively prevents syringe needle during separating needle cap, syringe needle and separates with syringe, reduce the complexity of operation simultaneously, does not need firmly to pull out when removing needle cap or syringe needle, prevent from overexerting, syringe needle pricks people, and medical staff is facilitated to separate syringe needle with syringe.

Description

A kind of syringe

[technical field]

The utility model relates to a kind of syringes, and in particular to a kind of syringe with reverse acting spiral structure and wing lug, Belong to medical instruments field.

[background technique]

Syringe is a kind of common medical instruments, and early in the 15th century, Italian's Ka Di Nellie just proposes syringe Principle, mainly to liquid medicine injection or drawing liquid.

Currently, for the disposable aseptic plastic syringe of human injection, with it, sterilizing is reliable, cheap, takes It is generally used with the advantages that convenience in the whole world, and is widely used in the medical and nursing works field such as injecting, draw blood, make up a prescription.It is existing Syringe needle falls off from needle cap and is contaminated ordinary syringe in order to prevent, and design increases the planar friction between syringe needle and needle cap Power, but this causes big inconvenience to the use of syringe, and very big frictional force is overcome when medical staff pulls up needle cap. In this way, be increased by the probability of needlestick injuries, efficiency reduction is worked at the same time；Sometimes medical staff is firmly excessive, or even meeting one It rises and extracts syringe needle and needle cap, to increase the danger of syringe pollution.In addition, syringe needle is easy to and needle due to firmly excessive Cap collides or even leaves scratch on the inside of needle cap, influences the acutance of needle point, causes security risk.

To solve the above problems, Chinese patent CN201520006313.8 discloses a kind of syringe, the subordinate in needle cap 1/3 section is provided with needle cap helical structure, and helical structure corresponding with needle cap is provided with outside pintle.Its purpose of utility model It is that direct-insert connection type is replaced by helical structure, to be easily achieved the separation of needle cap and syringe needle.

Applicant passes through the technical solution the study found that patent CN201520006313.8, although being advantageously implemented syringe needle With the separation of needle cap, but its is complicated for operation, need to be through multiple rotary, and remains during separating needle cap and syringe needle, It is easy the defect for separating syringe needle with syringe.Meanwhile during separating syringe needle and syringe, it has not been convenient to operate.

[utility model content]

To solve technical problem of the existing technology, it is easily isolated applicant provide a kind of, it is anti-with wing lug To helical structure syringe.

The utility model the specific technical proposal is:

A kind of syringe, including needle cap, syringe needle and syringe, it is characterised in that: needle cap and syringe needle, syringe needle lead to respectively with syringe Forward and reverse helical structure connection is crossed, the helical structure is made of a circle screw thread；The syringe needle lower end outside has the symmetrical wing Ear, syringe needle lower end outside helical structure are located above wing lug.Specifically, needle cap lower end inside is provided with a circle counter clockwise direction spiral shell Line, it is corresponding with the anti-clockwise thread structure of syringe needle lower end outside；Syringe needle lower end inside is provided with a circle clockwise thread, with needle The clockwise thread structure of cylinder apical lateral setting is corresponding.

Further, the needle cap outer surface of the utility model is provided with prominent lines.The effect of the prominent lines is Increase friction, is easy to be pinched with hand-held.

Further, the prominent lines is parallel prominent lines.

Further, the parallel prominent lines is arranged along needle cap long axis direction.

Further, the wing lug is rectangle, round or arc.

The above-mentioned settable prominent lines in wing lug surface is convenient for grip.

The beneficial effects of the utility model are:

Forward and reverse spiral is respectively adopted as a result, preventing in Separated pin in the utility model needle cap and syringe needle, syringe needle and syringe Syringe needle is separated with syringe during cap, syringe needle；It does not need firmly to pull out when removal needle cap or syringe needle, prevents from overexerting, needle Head pricks people.

The utility model helical structure is reduced the complexity of operation, has been saved disengaging time using a circle screw thread.

The utility model syringe needle bottom outside is provided with symmetrical wing lug, uses when medical staff loads and unloads syringe needle hand-held It pinches.

The utility model needle cap outer surface is provided with prominent lines, increases friction, convenient for using hand grip.

[Detailed description of the invention]

Fig. 1 is the utility model injector needle cap structural design drawing

Fig. 2 is the utility model syringe needle structural design drawing

Fig. 3 is the utility model injector syringe structural design drawing

It is as follows that corresponding structure is numbered in figure:

1, syringe 2, needle cap 3, syringe needle 4, prominent lines 5 on the outside of needle cap, needle cap internal screw thread (counterclockwise) 6, outside syringe needle bottom end Side screw thread (counterclockwise) 7, syringe needle bottom end inside thread (clockwise) 8, syringe apical lateral screw thread (clockwise) 9, wing lug

[specific embodiment]

The application method of the utility model is as follows:

Separation: separation needle cap and when syringe needle, a hand-held syringe (1) at a hand-held needle cap rectangle (4), counterclockwise turn Dynamic syringe needle (3) one encloses, that is, completes separation.After separation, that is, injector operations can be used.Mistake in separation needle cap (2) and syringe needle (3) Cheng Zhong, the connection between syringe needle and syringe are further fixed by reverse acting spiral structure, are overcome syringe needle and are separated simultaneously with needle cap Obtain defect.

Installation: when being packed into syringe needle (3), a hand-held syringe (1), at a hand-held needle cap rectangle (4), by syringe needle junction (7) circle installs rotationally clockwise for alignment needle tubing junction screw thread (8).The utility model syringe size specification With existing clinical use ordinary syringe indifference.Because a circle screw thread is only arranged in the utility model, therefore it can simplify the prior art Spiral install operation, save the time.The protrusion of needle cap outer surface setting, increases the friction between hand and needle cap, is convenient for Operation.

Syringe needle (3) and syringe (1) can be separated in case of need, proficiency grip syringe needle wing lug (9), one is hand-held Syringe (1), syringe (1) one encloses rotationally clockwise, that is, completes separation.Opposite direction operation, can be completed syringe (1) and needle The connection of head (3).The setting of wing lug is convenient for grip, so that the separation process of syringe needle and syringe is easy to operate.

The utility model the embodiment shown in that figure is only used for illustrating the technical solution of the utility model, embodiment content Do not constitute the limitation to technical solutions of the utility model, it is any it is making on the basis of the present invention, do not depart from the utility model skill The change or deformation of art scheme thought, should all fall within the protection scope of the utility model.

Claims (5)

1. a kind of syringe, including needle cap, syringe needle and syringe, it is characterised in that: needle cap and syringe needle, syringe needle pass through respectively with syringe Forward and reverse helical structure connection, the helical structure are made of a circle screw thread；The syringe needle lower end outside has the symmetrical wing Ear, syringe needle lower end outside helical structure are located above wing lug.

2. syringe according to claim 1, it is characterised in that: needle cap outer surface has prominent lines.

3. syringe according to claim 2, it is characterised in that: the prominent lines is parallel prominent lines.

4. syringe according to claim 3, it is characterised in that: the parallel prominent lines is set along needle cap long axis direction It sets.

5. syringe according to claim 1 or 2, it is characterised in that: the wing lug is rectangle, round or arc.