JP2000074909A - Blood component prartedly taking implement from segment tube - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a blood component partedly taking implement by which blood can be taken out easily without being splashed, which eliminates the need of a centrifugal operation and by which the blood can be inspected in a short time. SOLUTION: A pressing implement 6b which is fitted externally to a slender segment tube in which blood is sealed up is provided. In addition, a segment-tube opening implement which is fitted internally to the pressing implement 6b is provided. At this time, the blood in the reagent tube is separated into a red corpuscle 4 and blood serum (a blood serum housing part) 5. After that, the pressing implement 6b is fitted externally to the red corpuscle 4 or the blood serum housing part 5 in the segment tube. The segment tube is opened by the opening implement. The pressing implement 6b is pressed. The red corpuscle 4 or the blood serum 5 is dropped from the opening part of the opened segment tube. The red corpuscle 4 and the blood serum 5 can be partedly taken separately.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention separates blood into red blood cells and plasma for performing a blood transfusion test such as a cross-matching test from a blood transfusion segment tube of a blood bag containing blood to be transfused. The present invention relates to a blood component sorting device.

[0002]

2. Description of the Related Art A blood bag containing blood to be transfused has many segment tubes in which the same blood as the blood in the bag is sealed in order to perform blood tests such as blood type determination and cross-matching tests. Has been established.

[0003] Conventionally, in order to examine the blood in this transfusion segment tube, the segment tube is made vertical to separate it into red blood cells and plasma, and then it is cut with ordinary scissors.
The tube was cut to extract red blood cells and plasma, respectively.

[0004] Further, it is also possible to use a cutter or a container equipped with a needle for removing the blood inside by cutting or drilling the end of the segment and centrifuging the removed blood to separate it into plasma and red blood cells. Is being done.

[0005]

The former method of cutting with scissors is currently used in about 90% of the facilities for blood transfusion tests, but has the drawback that blood is scattered unless care is taken. If blood splatters, it not only fouls the blood test room and takes longer to clean up, but also workers who come into contact with blood may be infected with pathogenic bacteria in the blood.

[0006] The latter method using a container has a drawback that the operation is time-consuming because it has to be separated into red blood cells and plasma by centrifugation.

[0007] The present invention is intended to solve such a drawback, so that blood can be easily taken out without splattering, and a test can be performed in a short time without centrifugal operation. It is an object of the present invention to provide a blood component collecting tool which has been used.

[0008]

According to the first aspect of the present invention, there is provided a cylindrical pressing tool for extracting blood from an elongated segment tube in which blood is sealed, and an interior of the pressing tool. After the blood in the segment tube is separated into red blood cells and plasma, the segment tube is inserted into the pressing tool, whereby the segment tube is opened by the opening tool. A tube is opened, and the pressing tool is pressed before or after the opening to drop red blood cells or plasma from the opening of the segment tube or the opening of the opening tool.

According to a second aspect of the present invention, the segment includes a pressing tool for externally fitting a blood-sealed elongated segment tube, and a segment tube opening tool provided inside the pressing tool. After separating the blood in the tube into red blood cells and plasma, the pressing tool is externally fitted to the red blood cell or plasma accommodating portion of the segment tube, and the pressing tool is pressed, whereby the segment tube is pressed. The opening side of the tube is opened, and the red blood cells or the plasma flowing out from the side of the segment tube by pressing the pressing tool before or after the opening is dropped from the opening of the pressing tool side or the opening of the opening tool. It is characterized by having such a configuration.

According to a third aspect of the present invention, there is provided a pressing tool for externally fitting an elongated segment tube in which blood is sealed, and a red blood cell accommodating portion and a plasma accommodating portion of the segment tube on the side of the pressing device. A segment tube opening device is provided at each of the corresponding portions, and the pressing device is externally fitted to an elongated segment tube for separating sealed blood into red blood cells and plasma, and the opening of the pressing device is provided. The segment tube side is opened by pressing the part in which the tool is housed, and the red blood cells or plasma that have flowed out of the segment tube by pressing the pressing tool from before or after opening are pushed to the pressing tool side. It is characterized in that it is configured to drip from the opening of the opening or the opening of the opening device.

In short, according to the present invention, after separating blood in a segment tube into red blood cells and plasma, the red blood cell accommodating portion and the plasma accommodating portion of the segment tube are opened, and the segment tube is pressed. The gist of the present invention is that red blood cells and plasma are collected without performing centrifugal operation by pressing with a tool. By pressing the segment tube with the pressing tool, mixing of the separated red blood cells and plasma can be inevitably prevented.

[0012]

Next, an embodiment of the present invention will be described with reference to the drawings.

As shown in FIG. 1, a blood bag 1 containing blood to be transfused is provided with a number of segment tubes 2 in which the same blood as the blood in the blood bag is sealed.

Before transfusing blood, a transfusion test such as a cross-matching test is performed between the blood in the segment tube 2 and the patient's blood.

When the segment tube 2 is cut and separated from the blood bag 1, for example, when it is set up in a test tube 3,
Red blood cells 4 are separated downward, and plasma 5 is separated upward. The separation may be performed by centrifugation.

In this state, as shown in FIG. 2, when the segment tube 2 is inserted into the pressing tool 6, the end of the segment tube 2 is attached to the cutter (blade) 7 built in the pressing tool 6.
Dissected by.

Next, when the pressing tool 6 is pressed as shown by the arrow A, red blood cells are dropped, and the red blood cells may be received in an appropriate container and subjected to an inspection. If the upper and lower liquids are shut off by strongly pressing as shown by the arrow A, it is possible to almost completely prevent the plasma from being mixed, so that only the red blood cells are inevitably dropped.

Then, if the plasma accommodating section 5 is inserted into the pressing tool 6 to be inverted and the pressing tool 6 is pressed in the same manner, only the plasma can be dropped.

As shown in FIG. 3, the pressing tool 6 used in the above embodiment is formed in a cylindrical shape having a thin tip, and a cutter 7 is mounted slightly forward of the center.

As shown in FIG. 4, the cutter 7 is arranged in the diametrical direction of the pressing tool 6, and both ends thereof are fixedly held by projections 8, 8 'on the inner peripheral surface of the pressing tool.

The pressing member 6 is formed so as to have a certain degree of rigidity as a whole, but the pressing portions 9, 9 '
It is formed of a soft material such as a soft plastic or an elastic material.

Instead of the cutter 7, a needle 10 may be provided as shown in FIG. In the embodiment shown in FIG. 5, the needle 10 is inserted and fixed to a fixing member 11 provided like a plug at the tip of the pressing tool.

The needle 10 is preferably a hollow needle such as an injection needle. If the needle is not a hollow needle, it is necessary to form a through-hole in the fixing member 11 for dropping red blood cells and the like.

FIG. 6 shows another embodiment of the present invention. A cylindrical pressing tool 6a is fitted and attached to the red blood cell accommodating section 4 and the plasma accommodating section 5 of the segment tube 2, respectively. ing. As shown in FIG. 6, the pressing tool 6a has a needle 10a pinched and fixed to a projection 12 on the side.

A drop port 13 is formed adjacent to the projection 12. The red blood cells and the like that have flowed out by piercing the segment tube 2 with the needle 10a are dropped from the dropping port 13. In the case where the needle 10a is formed of a hollow needle such as an injection needle, the drip port 13 is of course not necessary.

In the above embodiment, the opening receiving member 14 made of a hard material is provided on the inner peripheral surface of the pressing device so as to face the needle 10a. Therefore, as shown on the left side of FIG. 6, even when the pressing tool is pressed, the needle 10a hits the opening tool receiving tool 14, so that
The pressing tool 6a is not cut.

FIG. 8 shows another embodiment of the present invention, in which a cutter 7a is clamped and fixed by a projection 12 instead of the needle 10a of FIG.

In the above embodiment, the cutting edge of the cutter 7a is formed obliquely. This need not be the case, but it is preferable to do so because of the ease of cutting.

As shown in FIG. 8, if the wall members 15 and 15 'for holding the cutter 7a in the longitudinal direction are provided so that the cutter 7a protrudes only slightly from the wall member, the opening member can be received. The cutting of the pressing tool 6a can be prevented without providing the tool 14.

If a wall body that sandwiches the cutter 7a is provided upright facing the length direction of the pressing tool 6a and the cutter 7a is surrounded by a rectangular wall body, the cutting of the pressing tool 6a can be further ensured. Can be prevented. In this case, the drip port 13 is formed between the wall body that is erected at intervals and the cutter 7a.

As shown in FIG. 6, finger guides 16, 16 'having an L-shaped cross section may be provided outside the dropping port 13 for dropping red blood cells or the like or the hollow needle 10a. In this way, it is possible to prevent the red blood cells and the like from hitting the finger during the dropping of the red blood cells and the like.

Even if the finger guides 16 and 16 'are provided so as to face each other in the length direction of the pressing tool as shown in FIG. 6, they may face each other in a direction orthogonal to the length direction as shown in FIG. May be provided.

In the embodiment shown in FIG. 6, the pressing tool 6a is
Although it is externally fitted to both the red blood cell storage part 4 and the plasma storage part 5, it is externally fitted to only one of them, for example, after red blood cells are dropped,
Of course, the plasma may be dropped onto the plasma storage unit 5 so that the plasma is dropped.

The pressing tool 6a may be formed of a soft material such as a soft plastic or an elastic material, but may be formed of a material capable of pressing the whole.

FIG. 9 shows another embodiment of the present invention. An elongated tubular pressing tool 6b is fitted around an elongated segment tube 2 which separates blood into red blood cells and plasma and seals the blood. The segment tubes 2 slightly protrude from both ends. Although FIG. 9 shows only the right half,
The left half is formed similarly to the right half.

At the portions of the segment tube 2 corresponding to the red blood cell storage section 4 and the plasma storage section 5, cutters are provided.
7b is clamped and fixed to the cutter fixture 12b.

A cylindrical dropping port 1 faces the cutter 7b.
3a are formed. Cut by cutter-7b,
The red blood cells and the like which have flowed out by pressing the segment tube 2 are dropped from the dropping port 13a.

As shown by the arrow A in FIG. 9, the portion where the segment tube 2 is pressed can be freely pressed.
It is formed of a soft material such as a soft plastic or an elastic material.

Separating members 19 and 19 'made of a hard material are fixed to the pressing member at the portion corresponding to the boundary between the red blood cell accommodating section 4 and the plasma accommodating section 5 of the segment tube. The separating members 19, 19 'are fixed to one of the opposing surfaces (the upper surface and the lower surface in FIG. 9), and the opposing inner surfaces are formed flat.
The flat portion is formed with fitting projections 17 and 17 'and fitting recesses 18 and 18' fitted into the fitting projections.

In the above-described embodiment, as shown in FIG.
It is formed in rows (17, 17 'and 18, 18').
Of course, only two protrusions and recesses in one row may be used. Further, the projection may be an elongated projection that is orthogonal to the length direction and a recess that fits into the projection.

With this structure, the pressing tool is manually pushed downward as shown by the arrow B, and the fitting recesses 18, 18 are pressed.
By fitting the fitting projections 17 and 17 'into the segment tube, the red blood cell accommodating portion 4 and the plasma accommodating portion 5 of the segment tube can be isolated.

In the embodiment shown in FIGS. 6 and 8, the opening device and the drip port can be formed as in the embodiment shown in FIG. If the drip port is formed as in the embodiment of FIG. 9, a finger guide is not required.

Conversely, in the embodiment of FIG. 9, the opening tool and the drip port may be formed as in the embodiments of FIGS.

According to the present invention, by opening the segment tube and pressing it with a pressing tool, red blood cells can be dropped and at the same time the red blood cells and the plasma can be separated by pressing, so that the centrifugal operation can be performed. It is unnecessary and prevents the blood from scattering, so that red blood cells and plasma can be separately collected.

[0045]

As described above, according to the present invention, scatter of blood is prevented, red blood cells and plasma can be easily and separately taken out, and centrifugation is not required. In addition, there is a remarkably remarkable effect that is not seen at all in the conventional method that the blood component sampling device to be used can be provided at a very low cost.

[Brief description of the drawings]

FIG. 1 is a side view showing a state where a segment tube of a blood bag is separated into red blood cells and plasma.

FIG. 2 is a perspective view showing an embodiment of the present invention.

FIG. 3 is a perspective view showing a pressing tool of the present invention.

FIG. 4 is a sectional view taken along line BB of FIG. 3;

FIG. 5 is a perspective view showing another example of the pressing tool of the present invention.

FIG. 6 is a perspective view showing another embodiment of the present invention.

FIG. 7 is a top view of the opening tool and the dropper of FIG. 6;

FIG. 8 is a sectional view showing another embodiment of the present invention.

FIG. 9 is a sectional view showing another embodiment of the present invention.

FIG. 10 is a surface view of a protrusion of the isolation member of FIG. 9; FIG.
3, 5 and 6, the pressing device, blood bag and segment tube are drawn as transparent materials.

[Explanation of symbols]

 2 ... segment tube 4 ... red blood cells (red blood cell storage part) 5 ... plasma (plasma storage part) 6, 6a, 6b ... pressing tool 7, 7a, 7b ... cutter (blade) 10, 10a ... ... Needle 13, 13a... Drip port 14... Opening receiving device 15, 15 ′... Wall body 16 and 16 ′ sandwiching opening.

Claims (9)

[Claims] 1. A cylindrical pressing device for taking out blood from an elongated segment tube in which blood is sealed, and a segment tube opening device provided inside the pressing device, wherein the blood in the segment tube is removed. After separation into red blood cells and plasma, the segment tube is inserted into the pressing tool to open the segment tube with the opening tool, and the pressing tool is pressed before or after the opening to press the red blood cells or A blood component separating device from a segment tube, wherein plasma is dropped from an opening of the segment tube or an opening of the opening device. 2. A pressure tool for externally fitting a blood-tight sealed elongated segment tube, and a segment tube opening tool provided inside the pressure tool, wherein the blood in the segment tube is combined with red blood cells. After being separated from the plasma, the pressing tool is externally fitted to the red blood cell or plasma accommodating portion of the segment tube, and by pressing the pressing tool, the side of the segment tube is opened. Red blood cells or blood plasma which has been released from the side of the segment tube by pressing the pressing tool from or after the opening is dropped from the opening of the pressing tool side or the opening of the opening tool. A device for collecting blood components from a segment tube. 3. A pressing tool for externally fitting a blood into a sealed elongated tube, and a portion of the pressing tube on the side of the pressing tool corresponding to the red blood cell accommodating section and the plasma accommodating section. A segment tube opening device, wherein the pressing device is fitted to an elongated segment tube in which sealed blood is separated into red blood cells and plasma, and a portion of the pressing device in which the opening device is provided is pressed. By opening the side of the segment tube, the red blood cells or the plasma flowing out of the segment tube by pressing the pressing tool before or after the opening can be opened at the side of the pressing tool or the opening tool. A blood component collecting device from a segment tube, characterized in that the device is configured to be dropped from an opening of a blood vessel. 4. A fitting projection is formed on the inner peripheral surface of the pressing tool corresponding to the boundary between the red blood cell accommodating section and the plasma accommodating section of the segment tube, and is fitted on the opposing inner peripheral surface of the pressing instrument. The method according to claim 3, wherein a concave portion is formed, and a pressing tool is manually pressed to fit the fitting concave portion and the fitting convex portion so as to isolate the fitting portion from the red blood cell storage portion and the plasma storage portion. The blood component sorting device according to the above. 5. The pressing tool according to claim 2, wherein an opening receiving member for preventing the opening from penetrating the pressing tool is provided on the inner peripheral surface of the pressing tool facing the opening. Blood component sorter. 6. A wall is provided so as to sandwich said opening, and said opening is projected only slightly from the upper end of said wall when said segment is opened by pressing said pressing. The blood component collecting tool according to any one of claims 2 to 5, wherein the tool is configured so as not to penetrate the pressing tool. 7. The method according to claim 6, wherein an opening for dropping red blood cells or plasma flowing out of the segment tube is formed between said opposing walls, or said opening is formed in a hollow needle. Blood component sorter. 8. A wall serving as a finger guide is provided to face an opening on the side of the pressing tool or a hollow needle on which the red blood cells or plasma are dropped, and the finger is placed outside the wall when the drop is dropped. The blood component fractionating device according to claim 7, wherein the finger is arranged so as not to touch red blood cells or plasma. 9. A method for collecting blood components from a segment tube, comprising using the collecting device according to claim 1.