JP4212108B1 - Disposable stopper block for blood collection tube and stopper device using the same - Google Patents

Abstract

[PROBLEMS] To open a blood collection tube having a film seal type stopper, in order not only to suppress secondary infection due to scattering of blood but also to prevent contamination of the next sample by the previous sample. The plug member is also held by the opening device, and the opening device once used to open the plug is provided as it is.
An opening block is provided with a mechanism for punching a stopper of a blood collection tube and holding the punched opening portion. The opening block is opened for each blood collection tube using the opening block. Blocks are discarded each time to prevent contamination and secondary infection between specimens.
[Selection] Figure 9

Description

The present invention relates to the opening of a blood collection tube for preventing secondary infection due to scattering of blood as a specimen and contamination between specimens.

Various blood collection tubes are used for blood collection in clinical examinations. Recently, a plastic blood collection tube that is lighter than glass and does not break even if dropped is mainly used.

The blood collection tube and its stopper will be described with reference to FIGS. The resin blood collection tube 1 is formed by coating a resin with a resin bottomed tube 11 having a flange 12 on the outer periphery of a circular opening 13 and a metal foil such as an aluminum foil, and a blood collection needle 41 (FIG. 3) at the center thereof. The plug member 2 has a tab 22 provided on a part of the outer periphery of the resin coating. The tab 22 becomes a knob portion when the cap is manually opened. The blood collection tube 1 is called a vacuum blood collection tube in which the plug 2 is bonded to the opening 13 of the resin bottomed tube 11 by a method such as heat welding in a state where the internal pressure is reduced. Here, a resin blood collection tube and a decompressed vacuum blood collection tube are also included in the blood collection tube 1, and a resin film is used regardless of whether the resin is coated on a metal foil, and a rubber member in the center. The plug body 21 is referred to as a film seal type plug body 2. Unless otherwise specified, when the plug body is used, the film seal type plug body 2 is referred to.

The blood collection holder will be described with reference to FIG. The blood collection tube 1 is used as the vacuum blood collection tube 1 in a reduced pressure state as described above. As shown in FIG. 3, at the time of blood collection, an injection needle as a blood collection needle 41 is attached to the blood collection holder 4 and the tip 42 of the blood collection needle 41 is inserted into a blood vessel (not shown), and then the vacuum blood collection tube 1 is collected. The blood collecting needle 41 is inserted into the holder 4 and the rear end 43 of the blood collecting needle 41 pierces the plug body 2 bonded to the opening 13 of the vacuum blood collecting tube 1 to connect the inside of the blood vessel and the vacuum blood collecting tube 1. Since the vacuum blood collection tube 1 is decompressed, the blood 3 flows into the vacuum blood collection tube 1 and blood is collected. Blood collection is completed by retracting the vacuum blood collection tube 1 from the blood collection tube holder 4 and withdrawing the rear end 43 of the blood collection needle 41 from the plug 2. The stopper 2 is impermeable to air, and is configured so that the blood collection needle 41 can be pierced by the rubber member 21 and the airtightness can be maintained even after the blood collection needle 41 is removed. Some blood collection tubes 1 differ in the diameter of the opening 13 and the length of the bottomed tube 11, but the size of the flange 12 of the opening 13 of the bottomed tube 11 and the size of the rubber member 21 are common. In addition, blood can be collected with one kind of blood collection holder 4 in order to stabilize the blood collection operation.

In the blood test work, at the laboratory level, the operator manually picks and opens the tab 22 of the plug body 2, but the inside of the blood collection tube 1 is in a decompressed state even though blood is collected. When the film is peeled off, the decompression is released instantaneously, and blood is scattered to the outside, or by manual work, there is a risk of contamination of other specimens by blood and secondary infection to workers. Hereinafter, the term “specimen” means blood unless otherwise specified.

It has been proposed to automate the blood collection tube opening work in order to eliminate the risk of contamination of the work environment and secondary infection due to such manual work and to improve the efficiency of blood tests.
Opening the stopper of the blood collection tube with a hollow punch, and processing the punched piece in a reduced pressure space (Patent Document 1), bonding the adhesive surface of the adhesive tape to the surface of the stopper of the blood collection tube In the automatic opening device for removing the stopper of the blood collection tube (Patent Document 2), the method of peeling and opening the stopper that seals the opening of the blood collection tube by pulling the adhesive tape. There exists a thing provided with the detector to detect (patent document 3).
Patent Publication 6-64688 Patent Publication 9-24038 Patent Publication No. 6-8895

In recent years, analytical instruments and the like have been improved in performance, and the accuracy of analysis has been improved. If even a small amount of other substances, for example, other specimens other than the specimen is mixed in the specimen blood, the test results are May be different and may lead to misdiagnosis.
When an instrument such as a cutter that has opened a blood collection tube is used to open the next blood collection tube, the specimen when the previous blood collection tube is opened adheres to the jig, and the next blood collection tube is opened. There is also the possibility of contamination between so-called specimens that sometimes contaminate the specimen in the blood collection tube. In the above Patent Documents 1 to 3, an instrument in which a blood collection tube is opened is also used for the next blood collection tube, and there is a possibility of contamination between specimens. Further, it is not intended that the instrument that opens for each blood collection tube is disposable and the instrument that opens for each blood collection tube is replaced with a new one.

As an opening mechanism of a blood collection tube that can further suppress contamination of a specimen, there is a method in which an opening cutter that punches a plug is replaced for each blood collection tube (Patent Document 4). According to the application, it is equipped with a plug cutter and a cutter holder that punches out the lid that is a plug body, and the plug cutter is attached to the plug cutter holder, the plug body is punched out, and the plug body portion is punched and opened. Hold the needle separately provided on the cutter holder, move the needle forward and backward, discard the punched plug body, and also remove the opening cutter from the opening cutter holder. It is a mechanism that replaces things. By this method, contamination of the specimen can be further suppressed.
Patent Publication 2005-206180

  However, in the above invention, since the needle holding the punched plug portion is not replaced for each blood collection tube, the specimen adheres to the needle pierced with the blood collection tube plug, and the next time the blood collection tube is opened. There is a risk of contamination between specimens because the needle to which the specimen is attached pierces the stopper and touches the specimen later to contaminate the specimen. That is, not all the instruments involved in opening the blood collection tube are discarded, and all the instruments involved in opening the blood collection tube are not updated. Hereinafter, the needle is referred to as a holding means or a holding pin.

In view of this, the present invention provides a plug-opening device for disposing of an instrument engaged in opening a plug for each blood collection tube and renewing the instrument engaged in the opening for each blood collection tube in order to further suppress contamination between samples of the blood collection tube. And an opening device for the same.

In the present invention, in order to solve the above-mentioned problem, the opening block is provided with an opening means for opening the plug body of the blood collection tube and a holding means for holding the plug body portion that has been opened. Each opening block is renewed and opened, and the opening block used for opening is discarded together with the plug body portion to suppress contamination between samples.

That is, the first invention is a blood collection tube opening device having a film seal-type plug body, which opens the blood collection tube plug body and holds the opened plug body portion. And an opening / closing chuck for gripping the opening block, and an opening / closing chuck control means for controlling the opening / closing chuck. The opening / closing chuck moves to the supply position to grip the opening block, and then opens the opening block. The grasping opening / closing chuck moves to the opening position, the opening block held by the opening / closing chuck opens the stopper of the blood collection tube, and the opening block holds the stopper that has been opened. The opening / closing chuck that holds the stopper block moves to the disposal position, and the opening block is removed from the opening / closing chuck, and the opening block that holds the stopper part that has been opened is discarded. Do A cap removal device, which comprises using the unplugging block for discarded household.

The opening block is provided with means for opening the plug of the blood collection tube and means for holding the plug part that has been opened. Further, the opening block has a function of covering the opening of the blood collection tube in order to prevent the specimen from scattering around when the blood collection tube is opened. Here, it has an opening portion that covers the opening of the blood collection tube, opens the stopper of the blood collection tube, and holds the plug portion that has been opened, and a gripping portion that is gripped by an opening / closing chuck for movement If it can be handled as a part, it will be called an opening block regardless of its shape.

The term “opened plug part” refers to the fact that the plug that seals the bottomed tube is not peeled off and opened, but a part of the plug is cut and opened. This is because the stopper block holds a part of the cut stopper.

At a supply position in which a plurality of opening blocks are placed side by side on a feeder or the like, one opening block is held by an opening / closing chuck and moved to an opening position with a blood collection tube. The opening block held by the opening / closing chuck at the opening position opens the stopper of the blood collection tube, and the opening block holds the stopper. The opening block holding the plug body part is moved to the disposal position while the opening / closing chuck holds the opening block, the opening block is detached from the opening / closing chuck, and discarded together with the opened plug body part. The control means for the opening / closing chuck controls not only the movement of the opening / closing chuck but also the gripping and detachment of the opening block. The supply position is the position where the open / close chuck grips the plug block, the open position is the position where the open block held by the open / close chuck opens the plug of the blood collection tube, and the discard position is the open / close chuck Refers to the position where the opening block is removed. The position of each position is not necessarily on the same plane. As a method of gripping the opening block by the opening / closing chuck, there is a method of gripping the inner wall or the outer wall of the cylinder which is the gripping portion of the opening block, but the method of gripping does not matter. Opening using one opening block for one blood collection tube, and using the opening block that is discarded together with the plug part that has been opened after being used once. It is a stopper device. In addition, it is not ask | required whether this opener is operated by computer control. In addition, this unplugging device can be used by being incorporated into an automatic analysis facility for blood collection tubes that automatically classifies, opens, dispenses, and analyzes the blood collection tubes. This includes the first invention.

According to a second aspect of the present invention, there is provided an opening block according to the first aspect of the present invention, wherein the opening block is provided with a partition wall in the cylinder perpendicular to the axial axis of the cylinder, An opening part with a holding pin for holding the plug part that is opened concentrically arranged inside the opening cutter is attached to the partition wall, and the opening and closing chuck sandwiches the partition wall for gripping the opening block. And an opening block comprising an opening portion and a cylindrical gripping portion on the opposite side.

A partition wall is provided in the cylinder, one cylindrical portion is used as an opening portion, and the other cylindrical portion is used as a gripping portion. The partition perpendicular to the cylindrical axis may or may not have a hole penetrating through the opening and gripping part at the center. The opening cutter is attached substantially perpendicularly to the partition wall, but may be attached to the cylindrical axis. Although the holding pin arranged inside the opening cutter is also attached substantially perpendicular to the partition wall, it is the same as the opening cutter that it may be attached toward the cylindrical axis. The holding pin was placed inside the plug cutter because the plug part that was opened could not be held unless it was placed inside the plug cutter to hold the plug part that was opened. is there. The holding pins are attached on the concentric circle of the cylinder at equal intervals of 90 degrees or 60 degrees, but the arrangement angle and the number of holding pins are not limited. The inner side refers to a direction toward the cylindrical axis. The length of the longest part of the plug cutter, that is, the length from the partition wall to the tip of the plug cutter is shorter than the cylinder length of the plug part, and the longest part of the plug cutter is the cylinder of the plug part. It is preferable to be inside. This is because the tip of the blood collection tube is covered with the opening portion of the opening block before the stopper of the blood collection tube is opened, and then the sample is opened with a plug cutter to prevent the specimen from scattering.

The third invention is the opening block of the second invention, wherein the opening cutter of the opening portion is a saw blade, and the holding pin has a length from the partition wall longer than the longest portion of the opening cutter, In order to hold the plug portion that has been opened at an acute angle, the opening block is formed as a holding pin with stepped retaining portions on both sides and inside or inside of the tip portion.

The reason why the opening cutter is in the shape of a saw blade is that the plug body is of a film seal type, and the plug body is punched out and opened by making the tip into a saw blade shape. The length of the holding pin from the partition wall is longer than the longest part of the plug cutter, that is, the length from the partition wall to the tip of the saw blade, because the holding pin penetrates the plug body before the plug cutter contacts the plug body. This is because it is easy to hold the plug part opened by the plug cutter. The length of the holding pin and the cylinder is arbitrary, but the length of the cylinder may be the same as or longer than the holding pin. Here, the length means the distance from the partition wall. At the opening position, the opening block is lowered to a predetermined height. First, the holding pin of the opening portion penetrates the plug body, and then the opening cutter punches the plug body and opens it. Next, when the stopper block rises, the retaining pin portion that has been punched and opened is held by the retaining pin retaining part, and the stopper block moves to the disposal position, together with the stopper member that has been opened. It is to be discarded.

The both sides of the tip of the holding pin and the inner side, or the inner stepped retaining part is for holding the plug part that has been opened, and when the plug is opened and the opening block rises, A step is provided on both sides and inside or inside of the tip of the holding pin, and the plug body portion opened at the retaining portion is held and discarded together with the opening block. Both sides of the tip of the holding pin are directed to the cylindrical axis and the left and right sides thereof, and the inner side is a direction directed to the cylindrical axis.

The fourth invention provides a plug block according to the first invention, in which a partition wall is provided in the cylinder perpendicular to the axial center of the cylinder, a concentrically arranged plug body is opened inside the cylinder, and the plug is opened. An opening part with a holding opening cutter that holds the plug part attached to the partition, and a cylindrical gripping part on the opposite side of the opening part with the opening and closing chuck holding the opening block It is an opening block consisting of

The 4th invention differs from the 2nd invention in that the opening plug cutter has the function of opening the plug body and the holding function of the plug part that has been opened. It is attached to the opening part. In order to distinguish it from an opening cutter with only an opening function, a holding opening cutter was used. Similarly to the third invention, the length of the longest part of the holding plug cutter, that is, the length from the partition wall to the tip of the plug cutter is made shorter than the cylindrical length of the plug part, and the holding plug is opened. The longest part of the cutter is preferably in the cylinder of the opening part. This is because before the stopper of the blood collection tube is opened, the distal end of the blood collection tube is covered with the opening portion of the opening block, and thereafter the opening is opened by a holding opening cutter to prevent the specimen from scattering.

According to a fifth aspect of the present invention, in the plug block according to the fourth aspect of the present invention, the plug cutter for holding the plug portion has a saw blade shape, and both sides of the saw blade shape for holding the plug member portion that has been opened. And an opening block as a holding opening cutter with a step-shaped retaining portion on the inside or inside.

As in the third aspect of the invention, the holding opening cutter is made into a saw blade shape. The plug body is of a film seal type, and the tip is punched out by opening the plug body with a saw blade shape. Because. The reason for attaching the step-shaped retaining portion on both sides and inside or inside of the saw blade is to hold the opened plug body portion, which is the same as the holding pin of the third invention. As described above, the length of the cylinder of the opening portion is preferably longer than the length of the holding opening cutter, that is, the length from the partition wall to the tip of the saw blade, in order to prevent scattering of the specimen. The inner side refers to the direction toward the cylindrical axis, and the both sides refer to the left and right sides toward the cylindrical axis.

Further, the sixth invention is the opening block according to any one of claims 2 to 5, wherein the tip of the opening portion of the opening block covers the blood collection tube opening.

The opening of the blood collection tube is generally provided with a flange portion as shown in FIG. The blood collection tube containing the sample is in a reduced pressure state. When the blood collection tube is opened, the depressurized state is released, and the specimen may scatter. Therefore, the specimen scatters around the blood collection tube so that the distal end of the cylindrical portion of the opening portion covers the outer wall of the blood collection tube, that is, the opening portion of the blood collection tube can be inserted into the distal end portion of the cylinder of the opening portion. This is to prevent this.

Furthermore, 7th invention is the opening block in any one of the Claims 2-6 which attached the rib to the inner periphery or outer periphery of the holding part of the opening block.

The opening portion of the opening block is held by the opening / closing chuck and moves to each position. The movement means horizontal and vertical movement to each position, but it is necessary to prevent the opening block from being detached from the opening / closing chuck during the movement. By providing a rib on the inner periphery or outer periphery of the cylinder, which is the gripping portion, this rib serves to prevent slipping and prevents the opening block from being detached from the opening / closing chuck. Further, the opening block is reinforced by attaching a rib.

Further, an eighth invention is the opening device of the first invention using the opening block of any of the second to seventh inventions.

There are many prior arts regarding blood collection tube opening devices. However, there has not been found an opening device that renews the opening block used for opening each blood collection tube and makes it disposable. The eighth invention is directed to a blood collection tube opening device using an opening block which is a disposable opening device.

Further, the ninth invention is the opening device of the first invention or the eighth invention, wherein a plurality of the opening and closing chucks are provided so that a plurality of blood collection tubes can be opened at a time.

In the stopper device, a plurality of blood collection tubes are placed on a blood collection tube rack and moved for each blood collection tube rack. This is because a plurality of open / close chucks are connected in advance, and the open / close block is gripped by each open / close chuck to open the plurality of blood collection tubes on the blood collection tube rack at the same time. It is free to make a plurality of opening blocks according to the opening / closing chuck or to hold the opening blocks individually by the plurality of opening / closing chucks. Here, the term “multiple stations” refers to a structure in which a plurality of open / close chucks and opening blocks are connected and can operate simultaneously.

Subsequently, a tenth aspect of the invention is a blood collection tube opening system programmed so as to be continuously operable in the opening device according to any one of the first, eighth and ninth aspects.

In an opening device that uses an opening block, which is a disposable opening device, an opening / closing chuck holds one opening block at a supply position where a plurality of opening blocks are placed side by side on a feeder or the like. Move to the opening position with the blood collection tube. The opening block held by the opening / closing chuck at the opening position opens the stopper of the blood collection tube, and the opening block holds the stopper. The opening block holding the plug body part is moved to the disposal position while the opening / closing chuck holds the opening block, the opening block is detached from the opening / closing chuck, and discarded together with the opened plug body part. The opening system includes a program for controlling such a series of operations and gripping and detachment of the opening block of the opening / closing chuck.

According to the first aspect of the present invention, in the device for opening a blood collection tube, the opening block, which is an opening device, is updated and opened for each blood collection tube, so that the sample attached to the open block where the previous blood collection tube is opened is used. Thus, there is no possibility of contamination of the specimen of the blood collection tube that is later opened, and contamination between specimens can be prevented.

According to the second aspect of the present invention, the opening block is constituted by an opening portion and a gripping portion, and not only the opening cutter of the opening portion opens the plug body but also the holding pin holds the opened plug body portion. Therefore, it is possible to secure an opened plug body portion, and it is possible to prevent contamination of the specimen in other blood collection tubes and surroundings, or secondary infection.

In the third invention, the holding pin of the opening portion of the opening block is made longer than the longest part of the opening cutter, the tip of the holding pin penetrates the opening, and then the opening cutter is opened with a saw blade shape. A stopper cutter punches the stopper and opens it. The holding pin having the retaining portion can hold the plug portion thus opened.

According to a fourth aspect of the present invention, the opening portion of the opening block has a second opening structure by attaching a holding opening cutter having two functions of opening and holding the opened opening portion to the opening portion of the opening block. Compared with the invention, the structure is simplified and the manufacturing cost of the opening block is reduced.

5th invention can make it easy to hold | maintain the plug part which was opened by the holding plug cutter which punched out the plug body by making the holding plug cutter into a saw blade shape, and also provided the retaining part.

According to the sixth aspect of the present invention, the tip of the opening portion of the opening block covers the flange portion of the blood collection tube to prevent scattering of the specimen around the opening portion.

The seventh invention is for the stopper block to be gripped and moved by the opening / closing chuck, but to be easily gripped by the opening / closing chuck by attaching a rib to the gripping portion of the stopper block and to prevent the stopper block from being detached during the movement.

The eighth invention is limited to an opening device for a blood collection tube using an opening block which is a disposable opening device, and clarifies the extension of the present invention.

The ninth invention is to make the opening operation more efficient by providing a plurality of open / close chucks.

The tenth aspect of the present invention includes an opening system that controls an opening device using an opening block.

Embodiments of the present invention will be described below.

FIG. 4 is a sectional view and a bottom view of the opening block 5 with holding pins. A partition wall 58 is provided in a substantially central part of the cylinder 59 perpendicular to the axis of the cylinder, and a hole 581 is formed in the central part. On the opening portion 51 on one side with the partition wall 58 in between, a saw blade-shaped opening cutter 53 concentrically with the cylinder 59 inside the cylinder is attached substantially perpendicularly to the partition wall 58. On the inner side, holding pins 54 are attached substantially vertically to the four partition walls 58 every 90 degrees on a concentric circle with the cylinder 59. The opening cutter 53 has a continuous annular shape, and four sawtooth-shaped tip portions are formed. The holding pin 54 is attached in the inner direction of the saw blade tip, that is, in the axial direction of the cylinder in order to easily hold the plug body portion that has been opened. On the other side of the partition wall 58, a grip portion 52 is provided, and a rib 56 is provided on the outer periphery of the upper end thereof. The rib 56 can be attached not only to the outer periphery but also to the inner periphery.

The opening cutter has a saw blade shape having four tips, but is not limited to this number, and the number of holding pins is four, but is not limited thereto. The partition hole 581 is provided for injection molding or the like. However, there is an advantage that air can easily enter the blood collection tube when the plug passes through the hole. However, it does not matter whether there are holes.

FIG. 5 is a front view and left and right side views of the holding pin 54. (1) is a holding pin 54 with stepped retaining portions 541 and 542 on both sides and inside of the holding pin tip, and (2) is a holding pin 54 with stepped retaining portions 542 only on the inner side. It is. The right and left (both sides) slope angles R1 of the holding pin tip are (1) about 60 ° and (2) about 30 °, but are not limited to this. The angle R2 is about 30 °, but is not limited to this. Further, the angle R3 between the retaining portions 541 on both sides and the axis of the holding pin 54 is substantially a right angle in (1), but R3 can be an acute angle as in (3). Further, the angle R4 between the inner retaining portion 542 and the axis of the holding pin 54 is not only a right angle, but can also be an acute angle as shown in (4).

The opening block is disposable and is manufactured by injection molding in order to reduce the unit price, and the material is polypropylene. However, the present invention is not limited to this, and any manufacturing method or material may be used.

FIG. 6 is a view in which an opening block with an opening cutter 53 and a holding pin 54 punches out the plug body 2 of the blood collection tube 1 and holds the plug body portion 23 where the holding pin 54 is opened. . The opening block 5 held by the opening / closing chuck 6 moves to the opening position, descends to the blood collection tube, the holding pin 54 penetrates the plug of the blood collection tube, and then the opening cutter punches and opens the plug. Plug. Next, the opening block 5 is raised, and the holding pin 54 holds the plug body portion 23 opened at that time. The plug part 23 thus opened is moved to the disposal position together with the opening block 5 and discarded. In addition, although a movement means the movement to the horizontal and the up-down direction to each position, in order to demonstrate the movement of the capping block 5, the word of movement, a descent | fall / rise was used. Similarly, it is used as necessary.

FIG. 7 shows the opening block 5 with the holding opening cutter 55. The holding opener cutter 55 has a sawtooth-like continuous annular shape. Retaining portions 551 and 552 that hold the plug portion 23 that is opened are formed at the tip of the saw blade. Although four sawtooth-shaped tip portions are formed, the number is not limited to this.

FIG. 8 is a front view, a left-right side view, and the like of the tip of the holding opening cutter. (1) is provided with stepped retaining portions 551 and 552 on both sides and inside of the saw blade, and (2) is provided with stepped retaining portions 552 only on the inner side. The left and right (both sides) gradient angles R5 of the holding open cutter are about 60 degrees for (1) and about 30 degrees for (2), but are not limited thereto. The inclination angle R6 between the axis of the holding opening cutter 55 and the inner side is about 30 degrees, but is not limited thereto. Further, the angle R7 between the retaining portions 551 on both sides and the shaft of the holding opening cutter 55 is substantially a right angle in (1), but R7 can be an acute angle as in (3). Further, the angle R8 between the inner retaining portion 552 and the shaft of the holding opening cutter 55 can be not only a right angle but also an acute angle as shown in (4). This is to make it easier for the holding plug cutter to hold the plug part that has been opened. The opening block is also disposable and manufactured by injection molding in order to reduce the unit price, and the material is polypropylene. However, the present invention is not limited to this, and any manufacturing method or material may be used.

FIG. 9 is a view in which the opening block 5 with the holding opening cutter 55 punches the stopper 2 of the blood collection tube 1 and holds the stopper portion 23 where the holding opening cutter 55 is opened. It is. The opening block 5 held by the opening / closing chuck 6 moves to the opening position, moves down to the blood collection tube, and the holding opening cutter 55 punches and opens the stopper of the blood collection tube. Next, the stopper block 5 is raised, but the stopper part 23 opened at that time is held by the retaining portions 551 and 552 (in some cases, only 552) of the holding stopper cutter 55. The plug body portion 23 thus opened is moved to the disposal position together with the opening block and discarded.

It is preferable that a rib is attached to the holding portion of the opening block so that the opening block held by the opening / closing chuck does not come off during the movement. FIG. 10 shows an opening block in which a rib 56 is attached to a gripping portion of the opening block. (1) is provided with a rib 56 on the outer periphery of the cylindrical portion of the gripping portion, and (2) is provided with an inner periphery. The movement of the opening / closing chuck 6 and the opening / closing pin 61 is also controlled by the opening / closing chuck control means. Although not shown, there is also a method of attaching an extrusion pin to the opening / closing chuck in order to ensure the removal of the opening block.

FIG. 11 shows the movement of the opening block 5 with the holding opening cutter 55. The open / close chuck 6 and the like are moved along the vertical slider 10 and the horizontal slider 9 by an open / close chuck control means (not shown). The opening / closing chuck 6 moves to a supply position where the opening block 5 is located, and the opening / closing pin 61 is opened to hold the opening block 5. Next, the opening / closing chuck 6 that holds the opening block moves to the opening position to open the blood collection tube 1. The plug part 23 that has been opened is held by the opening block 5, and the opening block is held by the opening / closing chuck 6 and moved to the disposal position, and the opening / closing pin 61 is closed and discarded for each opening block. Note that the opening / closing chuck 6 and the opening / closing pin 61 are sufficient to hold the opening block 5, and the holding method, shape, and the like are arbitrary.

FIG. 12 shows an example of the positional relationship between the supply position, the opening position, and the disposal position. The opening / closing chuck 6 moves to the supply position on the left side when the opening block is removed after reaching the disposal position. The unblocking block 6 and the blood collection tube 1 are mounted on a 5-block plug block feeder 8 and a blood collection rack 7, respectively. The unblocking block feeder 8 and the blood collection rack 7 are arranged from the front surface to the back surface in FIG. It moves in conjunction with the movement of the open / close chuck 6.

In FIG. 12, it is also possible to open and close the open / close chuck 6 at a time for each rack of the blood collection tube 1 as a plurality of five continuous chucks. In this case, the shape of the opening block storage box 20 also changes.

FIG. 13 shows the positional relationship between the opening position and the opening confirmation sensor 30. Every five blood collection tubes 1 are mounted on the blood collection tube rack 7 and sent to the opening position. The blood collection rack 7 is stopped by a position sensor (not shown), and the blood collection tube 1 to be opened is fixed by the clamp 40. Subsequently, the opening and closing operation of the opening / closing chuck 6 as described above is performed. At the same time, the opening confirmation of the blood collection tube 1 previously opened is performed by the opening confirmation sensor 30. When the plug has not been opened by the plug-opening confirmation sensor 30, operations such as stopping the continuous operation or removing the blood collection tube 1 that has not been opened are performed by the plug-opening system according to the tenth aspect of the present invention. This is only an example of an opening system and is not limited to this. This plug-opening system automatically performs the movement of the plug-opening block, the movement of the blood collection tube, the plug-opening operation, and the plug-opening confirmation act.
In addition, as above-mentioned, FIG.11, FIG.12, FIG.13 only showed an example of the plug opening apparatus, and this invention is not limited to these figures.

Along with the advancement of analytical instruments, slight contamination of the sample greatly affects the analysis result, and contamination of the sample in the inspection process or the like must be suppressed as much as possible. This is especially true for blood used for clinical testing. In the present invention, the opening block is used as a disposable in the opening operation for each blood collection tube, and the structure is simple and the cost is low.

Cross section of blood collection tube Top view of plug Blood collection tube and blood collection holder Opening block schematic with holding pin Holding pin with clasp Figure holding the plug part with the holding pin open Opening block with holding opener cutter Tip of holding opening cutter The figure which held the plug part where the opening cutter for holding was opened Opening block with gripper cylinder rib Opening block movement and opening device Top view of each position of the opening block Blood collection tube moving system

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Blood collection tube 11 Bottomed tube 12 Flange part 13 Opening part 2 Plug body 21 Rubber member 22 Tab 23 Opened (punched) plug body part 3 Specimen (blood)
4 Blood collection holder 41 Blood collection needle 42 Blood collection needle tip part 43 Blood collection needle rear end part 5 Opening block 51 Opening part 52 Holding part 53 Opening cutter
54 Retaining Pins 541 (Holding Pin) Both-side Retainer 542 (Holding Pin) Inner Retainer 55 Retaining Opening Cutter 551 (Holding Opening Cutter) Both-side Retainer 552 (Holding Opening Cutter) Part 56 (at the tip of the gripping part) rib 58 partition wall 581 (partition wall) hole 59 cylindrical part 6 opening and closing chuck 61 opening and closing pin
7 Blood collection rack 8 Feeding block feeder
9 Horizontal slider 10 Vertical slider 20 Opening block storage box 30 Opening confirmation sensor 40 Clamp

Claims (5)

Oite the blood collection tube having a stopper film seal type, a disposable cap removal block to be updated for each blood collection tube,
A partition is provided in the cylinder perpendicular to the axis of the cylinder,
Concentrically arranged inside the cylinder, to open the plug body and to hold the plug part that has been opened, a saw blade is formed, and steps are formed on both sides and inside or inside of the saw blade. An opening portion with a retaining opening cutter attached to the partition wall,
A cylindrical gripping part for gripping the opening and closing chuck on the opposite side of the opening part across the partition,
Opening block consisting of Further, the distal end portion of the cylinder of cap removal portion of the cap removal block, cap removal block according to claim 1 which is adapted to cover the blood collecting tube opening. Furthermore, the opening block in any one of Claim 1 or Claim 2 which attached the rib to the inner periphery or outer periphery of the holding part of the opening block. Furthermore, the opening block according to any one of claims 1 to 3 is used, the opening / closing chuck for gripping the opening block, and an opening / closing chuck control means for controlling the opening / closing chuck. Move to the position to grip the stopper block, then the opening / closing chuck that grips the opening block moves to the opening position, and the opening block gripped by the opening / closing chuck opens the stopper of the blood collection tube The stopper block is held by the stopper block, and the opening / closing chuck that holds the stopper block moves to the disposal position to disengage the stopper block from the opening / closing chuck. An unplugging device is used, wherein the unblocking block that holds the container is discarded, and a disposable opening block that is renewed for each blood collection tube is used. Further, the opening / closing device according to claim 4 , wherein a plurality of the open / close chucks are connected to open a plurality of blood collection tubes at a time.