CN2127597Y - SImple device for taking samples of blood - Google Patents

Abstract

The utility model relates to a simple device for taking samples of blood, which is composed of an outer tube, a syringe core bar and a syringe needle. The syringe core bar is sheathed in the outer tube, an opening is opened at one end of the outer tube, and the other end of the outer tube is closed. A liquid guiding hole penetrating the whole syringe core bar is provided along the axial line of the syringe core bar. When the simple device for taking samples of blood is used, the outer tube is drawn, blood flows into the inner chamber of the closed end of the outer tube along the syringe needle through the liquid guiding hole on the syringe core bar, and the blood drawing quantity contained in the inner chamber can displayed by the scale on the periphery surface of the outer tube. After the blood is drawn, the syringe core bar is drawn out of the outer tube, and then the outer tube becomes a blood drawing test tube. The simple device for taking samples of blood has the following advantages: it is convenient in use the simple device for taking samples of blood, the structure is simple, and the cost is low. The simple device for taking samples of blood can be used times without number and can adopt materials with low cost to make a disposable simple device for taking samples of blood to use.

Description

SImple device for taking samples of blood

This utility model relates to a kind of hemostix, particularly a kind of simple and easy hemostix that is suitable for hospital, clinic's collection blood.

At present the traditional blood-sampling method of hospital is to extract the required blood volume teat glass that reinjects with syringe out from need blood count person health to chemically examine, test tube and syringe use up after clean, sterilization re-uses, this mode exists operation sequence more, and thoroughly is not easy to cross infection and may produces Error and Assay as sterilization.Another kind of " sterilization chemical examination and haemospasia device " do not adopt the manpower suction and utilizes the intravital blood pressure reduction of people to make required blood volume be depressed in the hemospast lentamente, this hemospast inefficiency, and increase painful owing to blood sampling time is long for old man and blood pressure patient on the low side.And another kind of application number is the utility model patent (notification number: the CN2095638U day for announcing is on February 12nd, 1992) of 91218985.1 " dual-purpose hemostix ", though it not only can be used as hemostix but also can be used as blood sampling test tube, but structure is complicated, operate not easy, and flow out for fear of blood sample from pipe bottom aperture need to stay the test tube pipe as the rubber parts of piston at the bottom of, just might produce some chemical change, and make some index of blood sample make analysis data inaccurate thereupon changing because of rubber and blood sample.Particularly when blood being carried out some specific indexes (as liver function index) chemical examination, the test tube that needs blood sample will be housed carries out high pressure and centrifugal treating.Under centrifugal force and highly compressed effect, test tube heart rubber parts is easy to generate displacement and distortion, causes the aperture of blood sample at the bottom of the test tube pipe to flow out and can't be to this blood sample test, thus the treatment that causes the misery of blood drawing for the second time to incur loss through delay the state of an illness again to the patient.

The purpose of this utility model provides a kind of simple in structure, and is easy to operate, practical simple and easy hemostix with low cost.

The present invention is achieved in that it is made up of outer tube, injection core rod and syringe needle, in the outer tube that is cylindric and end sealing, be set with injection core rod, injection core rod by the union joint that protrudes in the outer tube opening and outside the plunger and the guide section between union joint and plunger of closed frame tube end one side form, the union joint that is used for the suit syringe needle is a cone that adapts with overlapping syringe needle, the inner chamber of the shape of plunger and outer tube blind end matches, and along the injection core rod axis direction one imbibing hole that runs through the injection core rod total length is arranged.Doing that on the outer peripheral face of outer tube the groove of indicating the blood drawing amount, the cross sectional shape of injection core rod are arranged is cross or circle.

This utility model only is made of outer tube, two parts of injection core rod except that syringe needle is standard component, and is simple in structure, after the blood sampling, injection core rod is extracted in outer tube, outer tube is promptly as blood sampling test tube, therefore extremely easy to use, if adopt disposable mode, also can finish and avoid cross infection.

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

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the profile at this utility model middle part.

By Fig. 1, Fig. 2 as can be known, this utility model is by syringe needle 1, injection core rod 3 and outer tube 5 are formed.Syringe needle is a standard component, it is hemispherical that outer tube 5 is that an end seals into, and the cylindrical tube of other end opening, the outer surface of outer tube 5 is carved with multiple tracks so that observe the groove 7 of blood drawing amount, and an end of injection core rod 3 is a cone 2, and its size is complementary with institute's gating head, the other end is a plunger 8, the profile of plunger 8 and size fit like a glove with the inner chamber of outer tube 5 blind ends, and can form vacuum chamber at outer tube 5 blind end inner chambers should guarantee that plunger 8 with outer tube 5 relative displacements takes place the time, to store blood.Guide section 4 cross section across, it mainly acts on is to play the guiding role.Delivery hole 6 is positioned at the axial location of injection core rod 3 and runs through the total length of injection core rod 3.During use, earlier the plunger 8 of injection core rod 3 is fitted with outer tube 5 blind end inner chambers, again syringe needle 1 is inserted blood count person's blood vessel, the operator can pinch injection core rod 3 on the other hand, another hands slowly spurs outer tube 5, and blood will inject the blind end inner chamber of outer tubes from the delivery hole 6 of the aperture injection core rod 3 of syringe needle 1.Observe groove 7, when reaching expectation blood drawing amount, extract syringe needle 1, this utility model is erect, make syringe needle be positioned at the upper end, pull out injection core rod 3 from outer tube 5, the outer tube 5 that can will fill blood this moment is inspected chemical examination by ready samples.This utility model use of can sterilizing repeatedly also can be adopted lower cost materials to make disposable simple and easy hemostix and use.

Claims (3)

1, simple and easy hemostix, it is made up of outer tube 5 and injection core rod 3 and syringe needle 1, it is characterized in that: be in the outer tube 5 of cylindric and end sealing and be set with injection core rod 3, injection core rod 3 is formed by the union joint 2 that protrudes in outer tube 5 openings with at the plunger 8 and the guide section 4 between union joint 2 and plunger 8 of outer tube 5 inner sealing ends one side, the union joint 2 that is used for suit syringe needle 1 is cones that adapt with overlapping syringe needle 1, the shape of plunger 8 and outer tube 5 blind end inner chambers match, and along injection core rod 3 axis directions one imbibing hole 6 that runs through injection core rod 3 total lengths are arranged.

2, simple and easy hemostix according to claim 1 is characterized in that: doing on the outer peripheral face of outer tube 5 has and the perpendicular groove 7 of outer tube 5 axis.

3, simple and easy hemostix according to claim 1 is characterized in that: the cross sectional shape of the guide section 4 of injection core rod 3 is a cross form circle.

Images