CN2215277Y - Disposable hemostix - Google Patents

Abstract

The utility model relates to a disposable hemostix practically used for blood specimen acquisition in hospitals and laboratories in medical colleges. The utility model is formed by the combination of a needle head, an improved needle tube and a plastic test tube, wherein, the improved needle tube is a plug-like article which is provided with a central pore channel, the outer wall of the improved needle tube has a certain angle, a front opening of the central pore channel is arranged on a mastoid and is connected with the needle head, and a rear opening of the central pore channel is arranged at a concave position on the outer wall of the improved needle tube. When the blood acquisition is carried out, air in the test tube is fully exhausted, the outer wall of the test tube at the rear opening of the needle tube is lightly pressed by an index finger, and the purposes of maintaining the negative-pressure in the test tube and preventing the air from being pressed into blood vessels during the puncturing process are achieved. When the index finger is shifted, the blood is sucked into the test tube. The utility model has the advantages of simple structure, economy and practicality, safe use, easy manufacture, etc.

Description

Disposable hemostix

This utility model belongs to the disposable blood taking device that is used for hospital and the laboratory collection human or animal of medical colleges and schools blood preparation.

Existing laboratory adopts the disposable syringe blood sampling.After having adopted with syringe, again with the blood injecting tube, in the process of this injecting tube, increased the destruction chance of hemocyte, broken cell number has been increased, thereby the accuracy of assay is exerted an influence, in addition, the cost of disposable syringe is higher, relatively wastes with blood collection needle.With the plastic test tube is the disposable blood taking device of power set, test tube be the power resources of blood sampling be again to contain the container of blood, the blood of extraction can directly enter test tube, this hemostix can overcome the shortcoming with blood collection needle.But at present the disposable blood taking device in the design is perfect inadequately, establishes iron clamp in addition and control valve is kept the test tube negative pressure, this structure more complicated outside hemostix; Connect syringe needle and syringe needle is directly conjuncted with test tube with conduit, such hemostix is awkward, and the conjuncted hemostix of while syringe needle and test tube is not considered the probability that gas is pressed into blood vessel, the safety inadequately of taking a blood sample; Also have some hemostixes not meet processing technology, make difficulty.Existence in view of the foregoing is that the disposable blood taking device of power set can not get using always with the plastic test tube.

The purpose of this utility model is a kind of simple in structure for designing, and is safe in utilization and what be easy to make is the disposable blood taking device of power set with the plastic test tube.

This utility model is by syringe needle, changes a syringe and the plastic test tube trisome combines.Syringe needle and test tube are with general identical.The improvement syringe is one to have the plug shaped article that central duct, outer wall have certain angle, and the central duct prosopyle is opened in mastoid process, and deutostoma is opened in the side walls collapse place of improvement syringe.During blood sampling, invisible spectro air is drained, with the test tube wall of forefinger flicking improvement syringe back-mouth, can reach and keep negative pressure and the purpose that prevents from residual gas is pressed into blood vessel in the pipe when holding hemostix with hands.After the puncture, forefinger is removed, and blood will be inhaled into test tube.Blood sampling finishes, and will improve syringe and pull up, and can inspect by ready samples.In addition, but improve syringe, syringe needle and all one-step casting molding of test tube, be suitable for producing in batches.

Characteristics of the present utility model are: simple in structure, easy and simple to handle, safe in utilization, make easily.

1--syringe needle 2--improvement syringe 3--central duct

4--duct deutostoma 5--hollow (for saving material)

The 6--plastic test tube

Claims (3)

1, a kind of disposable blood taking device of the collecting blood sample that combines by syringe needle, test tube and improvement syringe trisome, it is characterized in that syringe needle and test tube are bound up by the improvement syringe, the central duct deutostoma of improvement syringe is opened in sidewall, uses by the method for syringe central duct back-mouth test tube wall and keeps invisible spectro negative pressure, prevents that gas is pressed into blood vessel and control blood sampling volume.

2,, it is characterized in that the outer wall of improveing syringe has certain angle, back lateral wall part depression according to right 1 described hemostix.

3, according to right 1 described hemostix, it is characterized in that improveing the central duct formula of syringe, the deutostoma in duct is opened in the recess of syringe lateral wall.

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