CN2185605Y - Disposable injector - Google Patents

Abstract

The utility model relates to a disposable injector, which is provide with the functions of injecting blood, sampling blood and being a test tube. The injector comprises a needle cylinder, a push rod, a piston, a needle head, a needle head seat and a needle head sleeve. The utility model is characterized in that one end of the needle head sleeve, which is near a sealed end, is provided with an easy-to-fold fault trough. A vent hole is arranged at a point outside the indicative scale at the back end of the needle cylinder. An indicative line is marked on the surface of the needle cylinder between the outside of the indicative scale and the vent hole. The needle cylinder of the injector can be used as the test tube. In addition, the utility model has the advantages of simple manufacturing technique, easy operation and use, no outflow of the sampling liquor from the needle cylinder, etc. The utility model is suitable to be an instrument for medical treatment and test.

Description

Disposable injector

This utility model relates to a kind of disposable syringe, has the function of injection, blood sampling and test tube.

The disposable sterilized injector that widely uses in the hospital is called for short disposable syringe now, is made up of syringe, push rod, piston, syringe needle, needle holder and pinhead sleeve, when the blood drawing chemical examination, to draw blood liquid earlier in syringe, in the teat glass that reinjects, use for the sampling chemical examination.Syringe with after promptly throw away, teat glass is reused with after formalities such as washing, sterilization, dryings again.Because the repeated use of test tube causes cross infection easily, and use trouble.In order to overcome the isolating defective of syringe and test tube, the design that syringe double as test tube is used also appears, but owing to structural reason, and for example complex structure, or unreasonable structure and causing uses to be gone up inconvenience etc. so that can not promote the use of.

This utility model purpose is that the structure of the existing disposable sterilized injector that uses is done a step to be improved, and it is the disposable device of penetrating of three usefulness of one that a kind of double injection, blood sampling and test tube function are provided.

Describe technology contents of the present utility model in detail below in conjunction with embodiment and accompanying drawing thereof.

Accompanying drawing is the structural representation of this utility model embodiment three usefulness disposable syringes.

By figure, this three usefulness disposable syringe comprises syringe (1), push rod (2), piston (3), syringe needle (6), needle holder (4) and pinhead sleeve (5), push rod (2) front end connects piston (3), there is indicating graduation (8) on syringe (1) surface, pinhead sleeve (5) has a fault trough easy to break (7) near one of sealed end, and one place, syringe (1) the rear end indicating graduation outside is provided with passage (10).In the enforcement, fault trough easy to break (7) is located at pinhead sleeve sealed end one centimeters, and passage (10) is from 0.6 centimetre of the full indicating graduation of syringe.Eye-catching sign is arranged when making push rod pull out the syringe full scale, and the needle cylinder surface of present embodiment between the indicating graduation outside and passage is marked with indicatrix (9) together, and embodiment adopts red line.

During use, take off needle guard, after blood drawing finishes, the injector syringe inner push-rod is moved to the red line place, again pinhead sleeve is fractureed gently or cuts off along fault trough easy to break.Take off syringe needle, the pinhead sleeve sealed end of cutting tightly is enclosed within on the syringe needle headstock, the injector push-rod push rod that head-up pulls outward, because passage can enter outside air, just reduce push rod pressure, make push rod be easy to extract, remaining syringe can work as test tube usefulness.

In sum, the utility model is structurally done rational improvement to the disposable sterilized injector that generally uses now, and makes it have three kinds of functions of injection, blood sampling and test tube concurrently. This syringe has following advantage: (1) manufacturing process is simple, just adds a readily removable fault trough on former disposable syringe, one red line, a passage again; (2) discarded object is utilized, and namely syringe is used as test tube, and pinhead sleeve is cut off part and is used as the test tube bottom; (3) the passage air of coming in and going out separates easily syringe with push rod; (4) the red line sign is arranged, easily grasp during operation; (5) liquid such as blood in syringe, can not flow out all the time, and is clean when keeping operation, accurately; (6) simple to operate, easy to use. Be suitable for and make the medical inspection apparatus.

Claims (3)

1, a kind of disposable syringe, comprise syringe (1), push rod (2), piston (3), syringe needle (6), needle holder (4) and pinhead sleeve (5), push rod (2) front end connects piston (3), there is indicating graduation (8) on syringe (1) surface, it is characterized in that pinhead sleeve (5) has a fault trough easy to break (7) near one of sealed end.

2, disposable syringe according to claim 1 is characterized in that one place, the indicating graduation outside, syringe (1) rear end is provided with passage (10).

3, disposable syringe according to claim 1 and 2 is characterized in that the needle cylinder surface between the indicating graduation outside and the passage is marked with indicatrix (9) together.

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