CN2384575Y - Disposable micro-blood taking device - Google Patents

Abstract

The utility model relates to a disposable micro-blood sampling device. The utility model has a needle tube with a hollow needle head. One end of the needle tube, which is without a needle head, is movably matched with one sleeve. The outer tube wall at the matching end of the sleeve is provided with an exhaust groove. The utility model has the advantages of low costs, convenient operation, and short blood sampling time. After blood is sampled, the blood can be directly tested on a hematometer, and the utility model does not need other test tubes.

Description

The disposable micro hemostix

This utility model relates generally to a kind of medical apparatus and instruments, and particularly a kind of laboratory blood cell instrument is gathered the apparatus of blood with blood.

Gathering blood provides sample for test often to carry out in hospital, the blood sampling mode has a kind of for adopting tip blood, it is hemorrhage with acupuncture to be about to finger tip, use the suction pipe sucking-off then, splash in the teat glass standbyly again, but some laboratory indexes can not adopt tip blood, otherwise that the blood cell instrument goes out the result of laboratory test precision is not high, especially platelet can't be read accurately, blood cell instrument and plug-hole etc. often occurs.Obtain accurate result of laboratory test and must adopt venous blood, as extracting the venous blood of arm, usually all use disposable needle tubing, and the cost of disposable needle tubing is not low, be about 0.15-0.20 yuan, adopt the also bad operation of Micro blood volume (the blood cell instrument needs blood volume 20-300ul not wait), and want test tube to cooperate, thereby cost is higher.In order to reduce cost, improve analytical quality, easy and simple to handle, it is necessary that a kind of new blood sampling apparatus is provided.

The purpose of this utility model then is to provide a kind of shortcoming that can overcome known technology, and have with low cost, easy and simple to handle, the disposable micro hemostix that at every turn can draw blood on a small quantity exactly.

For achieving the above object, scheme of the present utility model is; The needle tubing of design one band hollow needle, with an end of syringe needle and the sleeve pipe clearance fit of termination sealing, the outer tube wall of sleeve pipe abutting end does not have air discharge duct for it.

Adopt such scheme, can realize the purpose of this utility model.

Below in conjunction with diagram and embodiment scheme is described in more detail.

Fig. 1 is the front view of disposable micro hemostix;

Fig. 2 is the another kind of front view that uses combination of disposable micro hemostix;

Fig. 3 is the sleeve pipe front view of disposable micro hemostix;

Fig. 4 be among Fig. 3 A to view;

Fig. 5 is a B-B cutaway view among Fig. 1;

Embodiment as shown in Figure 1 comprises the truncated cone-shaped needle tubing (2) of band syringe needle (1), syringe needle (1) is hollow, be fixed on during making on the needle tubing (2), the gradient of round platform is launched along the axis of needle tubing (2), with needle tubing (2) conical inboard wall clearance fit one sleeve pipe (3) is arranged, sleeve pipe (3) one ends have and the consistent gradient of needle tubing (2), the end sealing, and the outer wall of end has an air discharge duct (4) along the between centers extension.The pipe shaft of sleeve pipe (3) is that elongated shape is convenient to hands and is held, and the other end is an opening.

The inwall of garden platform shape needle tubing (2) also designs the spacer (5) that a symmetry distributes near syringe needle bearing, and its effect is that the blood cell instrument is got blood suction pipe location, in order to avoid suction pipe stops up

When user mode, needle tubing (2) cooperates by consistent gradient with sleeve pipe (3), as shown in Figure 1, leave a bit of space at needle tubing (2) with the sleeve pipe place, spatial sizableness lunges blood vessel with syringe needle in providing the blood sampling volume that enough chemical examinations are used after sterilization, local venous pressure raises after the arm colligation, rely on blood pressure blood to flow to the space of reservation automatically, because air discharge duct is arranged, flowing of blood can not hindered, and blood flow behind the full space is extracted syringe needle, on paraffin, stab and seal syringe needle and do not allow blood flow backwards, pull out sleeve pipe (3), the other end with needle tubing (2) skewer is gone into sleeve pipe (3) is placed on the shelf, as shown in Figure 2, so a blood collection procedure end.

Use this device, owing to extract action, and be reserved with the space, therefore can not produce operate miss and extract the blood of volume, and installation cost is cheap, estimate only 0.05 yuan of every cover cost, easy and simple to handle, blood sampling time is extremely short, through experiment, the blood of adopting 100ul only needed for 3 seconds, and blood is adopted the back and directly gone up the chemical examination of blood cell instrument, does not need other test tube

In sum, this utility model is effective.

Claims (4)

1. disposable micro hemostix is characterized in that: the needle tubing (2) of a band hollow needle is arranged, and sleeve pipe (3) clearance fit that an end of its band syringe needle and a termination are sealed, the outer tube wall of sleeve pipe (3) abutting end has air discharge duct (4).

2, disposable micro hemostix according to claim 1 is characterized in that: needle tubing (2) is a truncated cone-shaped.

3, disposable micro hemostix according to claim 1 and 2 is characterized in that: the abutting end of sleeve pipe (3) is consistent with the gradient of needle tubing (2), and the end sealing, and the other end is an opening.

4, disposable micro hemostix according to claim 2 is characterized in that; The spacer (5) that the inwall of garden platform shape needle tubing (2) has a symmetry to distribute near syringe needle bearing.