CN2179104Y

CN2179104Y - Disposable test tube blood taking device

Info

Publication number: CN2179104Y
Application number: CN 93245831
Authority: CN
Inventors: 尚礼
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-11-25
Filing date: 1993-11-25
Publication date: 1994-10-12
Anticipated expiration: 2003-11-25

Abstract

The utility model relates to a test tube blood taking device. The utility model can be used for directly pumping the blood into the test tube without pulling the test tube, and the utility model does not need pumping to form a vacuum state or retaining vacuum like a vacuum blood taking device. The utility model can be used for quantitatively taking blood and quantitatively distributing blood, and the operation is convenient.

Description

Disposable test tube blood taking device

This utility model belongs to the apparatus that takes out medium in the human body, is a kind of disposable directly with the hemostix of test tube blood drawing.

In the prior art field, can adopt the ordinary syringe blood drawing to the human body blood sample collection, but still need the blood sample injecting tube.

This utility model hemostix presets invisible spectro negative pressure when blood drawing, utilize negative pressure directly blood to be extracted in vitro, also the blood sample branch can be expelled to other in vitro in case of necessity.

Hemostix of the present utility model comprises the punch block of test tube, piston, rubber stopper and band pipe.

Below in conjunction with accompanying drawing this utility model is described in detail:

The front port 1a of test tube 1 is plugged with rubber stopper with holes 4, and piston 2 is fixed on the rear end of pipe 3a in the punch block 3.Piston 2 can slide in test tube 1 relatively, and pipe 3a can slide in rubber stopper 4 holes relatively in the punch block.Punch block overcoat 3b has the outside that the elasticity pine is enclosed within test tube 1.Make piston 2 nearer from rubber stopper 4 during assembling, promptly the test tube mouth advances test tube 1 relative punch block 3 during use near the rear end of punch block toward front end, makes the cavity between rubber stopper 4 and the piston 2 form negative pressure.At this moment clutch the overcoat 3b of punch block 3, just clutched simultaneously test tube 1, if standard needle has been contained on the front end 3c of punch block 3, just can lunge skin, unclamp the hands of clutching, the search vein is in case needle point thrusts vein, test tube 1 will retreat automatically gradually, and blood will flow to test tube automatically by the interior pipe 3a of punch block.

Hemostix therefore of the present utility model need not draw test tube when drawing blood, but as long as before needle point thrusts skin, advances test tube just passable earlier.If it is also very convenient blood will to be injected other test tube, as long as test tube 1 relative punch block 3 is pushed away forward, blood will flow out from punch block front end 3c.

Claims

1, a kind of disposable test tube automatic blood sampler, it includes test tube 1, piston 2, punch block 3 and rubber stopper 4, and feature of the present utility model is:

A. the front port 1a of test tube 1 is plugged with and is with foraminous rubber stopper 4;

B. piston 2 is fixed on the rear end of pipe 3a in the punch block 3;

C. the overcoat 3b of punch block 3 has the outside that the elasticity pine is enclosed within test tube 1, and the front end 3a of punch block 3 can adorn standard needle.

2, according to claims 1 described hemostix, it is characterized in that: the cavity between rubber stopper 4 and the piston 2 can form negative pressure.