CN2857820Y

CN2857820Y - Disposable artery hemostix

Info

Publication number: CN2857820Y
Application number: CN 200520124323
Authority: CN
Inventors: 刘振义; 王庆菊
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-11-11
Filing date: 2005-11-11
Publication date: 2007-01-17
Anticipated expiration: 2015-11-11

Abstract

A medical instrument, especially a disposable artery hemostix, using for physiological and biochemical tests includes a needle tube 1 with scales, a needle 3, a needle cap 4, and a rubber plug 2 on the front end of the needle tube 1 to seal it. The needle 3 is a switch needle with double openings includes a cylinder handle 5, a ball valve 9 disposed in the handle 5, a handle 7, and a front needle 8 and a rear needle 6 disposed on both ends of the handle 5 and communicate with switch of ball valve 9. The needle tube 1 is in a vacuum negative pressure state and is filled with anticoagulant. The disclosed instrument is provided with simple structure, easy use, accuracy of blood collecting quantity, safe of transference, and no affection to the test result.

Description

Disposable arterial blood drawing device

Technical field

This utility model relates to a kind of medical apparatus and instruments, and particularly a kind of disposable arterial blood drawing device is used for medical department and carries out physiology, biochemical investigation.

Background technology

When gathering arterial blood gas analysis clinically at present, generally use 1-2 milliliter syringe to be the blood sampling instrument, before blood sampling, all push away again behind the lubricated whole tube chambers of need suction anticoagulant and drain, syringe must guarantee inner wall smooth, good seal performance, blood sampling back syringe needle need be used the plug shutoff immediately, influences assay otherwise enter air during easily because of blood sampling, and in transferring to the process in laboratory, can occur the syringe joint shirk cause specimen pollute and lost efficacy may.

Summary of the invention

The technical problems to be solved in the utility model is to overcome the shortcoming that exists in the prior art, provide a kind of simple in structure, easy to use, blood sampling volume accurately, pass on safety, the impregnable disposable arterial blood drawing device of assay.

This utility model is achieved in that a kind of disposable arterial blood drawing device for this reason, comprise and be with graduated syringe, syringe needle, pin medicated cap, the front end of syringe has the plug of sealing syringe, syringe needle is the double end switch pin of belt switch, it is by the cylinder needle handle, be contained in the globe valve in the needle handle, handle and device are formed at the needle handle two ends and in preceding pin, back pin that the globe valve switch is communicated with, are vacuum negative pressure condition in the syringe and are filled with anticoagulant.

The beneficial effects of the utility model are: simple in structure, easy to use, blood sampling volume accurately, to pass on safety, assay unaffected.

Description of drawings

Accompanying drawing 1 is this utility model structural representation;

Accompanying drawing 2 is this utility model switch needle construction sketch map.

Among the figure: 1. pin 9 globe valves 10. valve openings before pins 7. handles 8. of syringe 2. plugs 3. switch pins 4. pin medicated caps 5. needle handles 6. back.

The specific embodiment

With reference to the accompanying drawings, a kind of disposable arterial blood drawing device, comprise and be with graduated syringe 1, syringe needle 3, pin medicated cap 4, the front end of syringe 1 has the plug 2 of sealing syringe 1, and syringe needle 3 is the double end switch pin of belt switch, and it is by cylinder needle handle 5, be contained in the globe valve 9 in the needle handle 5, handle 7 and device are formed at needle handle 5 two ends and in preceding pin 8, back pin 6 that globe valve 9 switches are communicated with, are provided with the valve opening 10 of pin 8 and back pin 6 before being communicated with in the globe valve 9, are vacuum negative pressure condition in the syringe 1 and are filled with anticoagulant.

Using method: take out pin medicated cap 4, holding hemostix punctures, after syringe needle insertion patient is subcutaneous, the position that needle handle 5 switches are screwed to out, syringe 1 and syringe needle conducting like this, after entering tremulous pulse, especially during the tip arterial blood drawing, enter syringe 1 under the attraction of arterial blood negative pressure in syringe 1, close needle handle 5 switches after reaching required scale, preceding pin 8 is extracted from patient's blood sampling site, blood sampling finishes, after double needle taken off from syringe 1 front end,, can send the laboratory to check institute's blood sampling in the syringe 1 and anticoagulant mixing gently.

Claims

A kind of disposable arterial blood drawing device, comprise and be with graduated syringe (1), syringe needle (3), pin medicated cap (4), it is characterized in that: the front end of syringe (1) has the plug (2) of sealing syringe (1), syringe needle (3) is the double end switch pin of belt switch, it is by cylinder needle handle (5), be contained in the globe valve (9) in the needle handle (5), handle (7) and device are formed at needle handle (5) two ends and in preceding pin (8), back pin (6) that globe valve (9) switch is communicated with, are vacuum negative pressure condition and are filled with anticoagulant in the syringe (1).