JPH05187975A - Blood collecting tube - Google Patents

Abstract

PURPOSE:To make the stirring blood in a tube easy and enable exact hematology inspection, by providing a convex or a concave past on the inner surface of a blood collecting tube. CONSTITUTION:On the part of blood collecting tube inner surface contacting to blood which is consisting of a sealing part 1 and a tube 2 with a bottom, a convex or a concave part with two stripes with length of ca. 65mm, height or depth of ca. 1mm and width of ca. 1.5mm are provided and then turbulent flow is generated when the blood in the tube is stirred. Also, when the blood collecting tube is rotated at the vertical state, the blood component in the inspected sample in the tube is easily homogenized and the blood collecting tube is not fallen and troubled during the stirring.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to blood collection tubes. More specifically, it relates to a blood collection tube used for a general blood test.

[0002]

2. Description of the Related Art In order to determine the presence or absence of anemia, the type of anemia, the presence or absence of inflammatory toxicity mechanism, the presence or absence of leukemia, and the type, the number of formed components of red blood cells, white blood cells, and platelets in blood components is counted. -A hematology test is performed to examine physical properties such as size and shape from whole blood.

In the hematology test, blood as a sample is collected in a blood collection tube. The size of the blood collection tube is, for example, 2 to 7 m
1, the outer diameter is 13 mm, and the tube length is 75 to 100 mm.

The blood collection tube containing the sample is transferred to the rack of the automatic analyzer. In order to improve the measurement accuracy, the blood collection tube is rotated upright to agitate the blood in the blood collection tube to make the blood components in the blood collection tube uniform before the analysis. This stirring condition is 1,00
It takes 3 seconds or more at 0 to 1,500 times / minute.

Depending on the type of automatic analyzer, there is also a system in which a blood collection tube containing a sample is mixed by inversion. In that case, the stirring mechanism of the blood collection tube becomes complicated. Further, when the blood collection tube containing the sample is agitated by a manual method, the agitation effect is insufficient even if the blood collection tube is rotated upright, and therefore the blood collection tube must be tumbled and mixed.

[0006]

DISCLOSURE OF THE INVENTION The present invention provides a blood collection tube capable of quickly and uniformly distributing blood components in the blood collection tube when the blood collection tube is rotated in an upright state, and makes the blood components in the blood collection tube uniform. In doing so, it is intended to provide a blood collection tube which does not need to be mixed by inversion.

[0007]

SUMMARY OF THE INVENTION The present invention provides a bottomed tube having a bottomed tubular body having an opening for accommodating blood and a closed portion, and a member for sealing the opening, which has a bottomed bottom. The gist is a blood collection tube having a convex portion or a concave portion on an inner wall of a tubular body.

The blood collection tube of the present invention can be applied to open tubes such as spits as well as vacuum blood collection tubes. In the present invention, the material of the tube body of the blood collection tube may be glass or plastic, but it is preferable to use plastic which is easy to mold because it is easy to mold.

In the present invention, the term "sealing member" means a member that is sealed with a rubber plug or a film. In the present invention, a convex portion or a concave portion is provided on the inner wall of the bottomed tubular body, but providing it near the sealing member should be avoided because it impairs the sealing function. This convex portion or concave portion may be linear or granular,
This number is not limited. Usually, a linear convex portion is provided on the inner wall of the tubular body in the length direction of the bottomed tubular body. In the present invention, the blood of the sample usually contains an anticoagulant such as sodium heparin in order to make the blood components in the sample, that is, the blood collection tube, uniform.

[0010]

The blood collection tube of the present invention has a convex portion or a concave portion on the inner wall of the bottomed tubular body, and turbulent flow easily occurs in the blood inside the vessel due to stirring,
When the blood collection tube is rotated in an upright state, it is easy to make the blood components of the sample in the blood collection tube uniform, and it is not necessary to mix the sample by inversion when stirring the sample.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the drawings. Figure 1
FIG. 2 is a cross-sectional view showing an example of irregularities on the inner wall of a bottomed tube of the blood collection tube of the present invention, and FIG. 2 is a cross-sectional view showing a blood collection tube composed of a sealing member 1 and a bottomed tube 2. In FIG. 1A, a convex portion is provided on the inner wall of the blood collection tube. Even if a concave portion is provided as shown in FIG. 1B, the same effect as when a convex portion is provided can be expected.

A plastic blood collection tube was formed by molding, and two convex portions as shown in FIG. 1 (A) were linearly provided on the inner wall of the blood collection tube. In this case, the length of the blood collection tube was 75 mm, but the length of the linear convex portion was 65 mm because the convex portion was provided only where the inner wall was in contact with blood. Moreover, the height of the peak of the convex portion was 1 mm and the width thereof was 1.5 mm.

[0013]

EFFECTS OF THE INVENTION Since the blood collection tube of the present invention has the uneven portion on the inner wall of the tube, the blood in the tube can be easily stirred, and thus an accurate hematology test can be performed.

In the method of hematology examination, it is not necessary to mix the blood collection tubes by inversion, and the blood adhered to the sealing portion does not stain the hands when opening the cap.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an example of irregularities on the inner wall of a bottomed tube of a blood collection tube of the present invention.

FIG. 2 is a cross-sectional view showing a blood collection tube.

[Explanation of symbols]

 1 Sealing member 2 Bottomed tubular body

Claims (1)

[Claims] 1. A blood collection tube comprising a bottomed tube having an opening and a closed part for accommodating blood, and a member for sealing the opening, wherein a convex portion or an inner wall of the bottomed tube is provided. A blood collection tube having a recess.