CN201108644Y - Improved syringe - Google Patents

Abstract

The utility model discloses an improved syringe that comprises a needle cylinder, a piston and a needle head. The front end of the needle cylinder is provided with a one-way valve; the front end of the one-way valve is a papillary bulge; the needle head is arranged on the papillary bulge; the connecting position of the rear end of the one-way valve and the opening of the needle cylinder is provided with a cross-shaped blocking ball thread; the inside of the one-way valve is provided with a circular ball valve. After the blood sampling is completed, the needle cylinder is transformed into a test tube. On one hand, the improved syringe reduces the trouble of inserting the ordinary syringe into another test tube after the blood sampling; on the other hand, the improved syringe saves the material of the test tube, has a simple structure, and can be used conveniently.

Description

A kind of improved syringe

Technical field

This utility model belongs to medical instruments field, relates in particular to a kind of improved novel injector.

Background technology

At present, mostly be to adopt the piston type syringe of glass that human body is drawn blood, the blood of extracting out is reinjected in another test tube in order to chemically examining in hospital's blood drawing chemical examination.Used in the past syringe and test tube continue to use after washing away sterilization, and be often not thorough because of sterilization, causes cross infection.Adopt disposable syringe and test tube now, though solved the problem of the easy cross infection of former repeated use, on the one hand with still wanting in the injecting tube troublesome poeration behind the blood collection needle; And disposable syringe with after abandon it, certainly will cause the waste of material.

Summary of the invention

The purpose of this utility model is exactly when particularly using as hemostix at existing syringe, the problem of vulnerable to pollution, troublesome poeration and the waste material that exists, a kind of improved syringe is provided, has advantage simple in structure, easy to use, economical with materials.

The purpose of this utility model is to realize like this, this syringe comprises syringe, piston, syringe needle part, described syringe is a cylindrical shape, there is the handle of a handled easily rear end, the front end of syringe is provided with a check valve, and the front end of described check valve is a papillae, and described syringe needle is installed on the papillae, the opening junction of the rear end of check valve and syringe is provided with the silk of blocking of one " ten " font, is provided with the ball valve of a circle in the check valve.

When needs are taken a blood sample, outwards twitch piston, form negative pressure at the syringe front end, ball valve in the check valve is under the effect of syringe negative pressure, fall back on the silk place that blocks, opened the nipple endoporus this moment, blood through syringe needle, check valve, enter in the syringe, blood drawing finishes that the back ball valve is got back to nipple endoporus place and with its obstruction.This moment syringe needle is taken off, piston is all extracted from syringe, syringe test tube, a pin is used more.

The beneficial effects of the utility model are: because after blood sampling finishes, syringe test tube, reduced on the one hand with after the ordinary syringe blood sampling, inject the trouble of another test tube again, also saved tube material on the other hand, simple in structure, easy to use.

Description of drawings

Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing

Sketch map when Fig. 1 takes a blood sample for this utility model

Sketch map when Fig. 2 is this utility model test tube

Among the figure: 1, syringe 2, piston 3, syringe needle 4, handle 5, check valve 6, papillae 7, ball valve 8, the silk of blocking

The specific embodiment

As shown in Figure 1 and Figure 2, this syringe comprises syringe 1, piston 2, syringe needle 3 parts, described syringe 1 is a cylindrical shape, there is the handle 4 of a handled easily rear end, the front end of syringe 1 is provided with a check valve 5, and the front end of described check valve 5 is a papillae 6, and described syringe needle 3 is installed on the papillae 6, the opening junction of the rear end of check valve 5 and syringe is provided with the silk 8 of blocking of one " ten " font, is provided with the ball valve 7 of a circle in the check valve 5.

When needs are taken a blood sample, outwards twitch piston 2, form negative pressure at syringe 1 front end, ball valve 7 in the check valve 5 is under the effect of syringe negative pressure, fall back on silk 8 places that block, opened the nipple endoporus this moment, blood through syringe needle 3, check valve 5, enter in the syringe 1, blood drawing finishes that back ball valve 7 is got back to nipple endoporus place and with its obstruction.This moment syringe needle is taken off, piston is all extracted from syringe, syringe test tube, a pin is used more.

Owing to adopt said structure, after blood sampling is finished, syringe test tube, reduced on the one hand with after the ordinary syringe blood sampling, inject the trouble of another test tube again, also saved tube material on the other hand, simple in structure, easy to use.

Claims (1)

1, a kind of improved syringe, this syringe comprises syringe, piston, syringe needle part, described syringe is a cylindrical shape, there is the handle of a handled easily rear end, the front end that it is characterized in that syringe is provided with a check valve, the front end of described check valve is a papillae, and the opening junction of the rear end of check valve and syringe is provided with the silk of blocking of one " ten " font, is provided with the ball valve of a circle in the check valve.

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