JPH073328Y2 - Sample suction device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to an apparatus for holding a sample container sealed by a stopper and sucking a sample in the container.

[Conventional technology]

In order to aspirate a sample such as blood from a sealed sample container, a method is generally used in which the sample container is held and then a stopper is pierced with an injection needle-shaped thin tube to aspirate the sample. JP-A-63-187158 discloses a specific example. That is, with respect to the sample container with the stopper side lower than the bottom side, the container support moves to contact the bottom of the container, and then the suction needle washing tank moves to contact the stopper,
The sample container is held. The needle-shaped thin tube penetrates the washing tank and pierces the stopper, and the sample in the container is sucked.

[Problems to be solved by the device]

In the above-mentioned conventional apparatus, three drive sources are used to move the container support, the suction needle washing tank, and the needle-shaped thin tube, respectively. If the number of drive sources can be reduced, the device can be downsized and the cost can be reduced.

The present invention has been made in view of the above points, and the operation of sandwiching and holding both sides of a sample container can be performed by one drive source, and the operation of piercing a thin tube into a stopper can be reliably performed. An object of the present invention is to provide a sample suction device that can be used.

[Means for Solving the Problems]

In order to achieve the above object, in the sample suction device of claim 1, as shown in FIGS. 1 and 2, the support 24 provided with the recess 26 is moved toward the bottom of the sample container 10. By moving the washing tank 34 toward the stopper 12, the sample container 10 is sandwiched and held from both sides, and the injection needle-like thin tube 46 is inserted into the washing tank 34.
The sample container by piercing the
In the device adapted to suck the sample in 10, one end penetrates the stationary member 70 and is connected to the support tool 24, and the other end is connected to the cleaning tank 34. Source 64
And a spring 68 arranged between the drive source 64 and the inside of the stationary member 70, and the other end of the drive source 64 or the cleaning tank 34 in order to keep the spring 68 in a contracted state when the drive source 64 extends.
It is characterized in that it includes a stopper 78 provided so as to abut.

In Claim 1, the drive source 64 is an air cylinder,
The piston rod 66 is preferably connected to the support 24, and the cylinder 63 is preferably connected to the cleaning tank 34.

Further, in the sample suction device of claim 3, as shown in FIGS. 3 and 4, the support 24 provided with the recess 26 moves toward the bottom of the sample container 10, and the washing tank 34 is attached to the stopper 12. By moving toward, holding the sample container 10 sandwiched from both sides,
An injection needle-like thin tube 46 penetrates the washing tank 34, and further pierces the stopper 12, thereby aspirating the sample in the sample container 10, one end of which is connected to the support 24 and the other end. Was connected to the cleaning tank 34 through the stationary member 70a,
A drive source 64a having a variable distance between both ends, a spring 68a arranged between the other end of the drive source 64a and the outside of the stationary member 70a, and a state in which the spring 68a is contracted when the drive source 64a extends. Therefore, it is characterized by including the other end of the drive source 64a or a stopper 78a provided so as to come into contact with the cleaning tank 34.

The drive source 64a is an air cylinder, the piston rod 66a is connected to the cleaning tank 34, and a spring is provided between the stationary member 70a and the tip of the piston rod 66a.
It is desirable to construct it so that 68a is provided.

[Action]

In claim 1, as shown in FIG. 1 and FIG.
In order to move the other end, the spring 68 must be further contracted, so a relatively large force is required. Therefore, when the drive source 64 contracts, first, the one with the smaller load moves. That is, one end (left side in FIG. 2) moves to the other end. After one end contacts the stationary member 70, the other end moves toward the one end while compressing and contracting the spring 68. Since the support 24 is attached to one end and the cleaning tank 34 is attached to the other end, the support 24 first comes into contact with the bottom 14 of the sample container 10 so that the bottom 14 fits into the recess 26, and then the cleaning is performed. The tank 34 contacts the stopper 12.

After that, the thin tube 46 moves forward (moves to the left in FIG. 2).
By doing so, the sample 12 in the container passes through the washing tank 34 and pierces the stopper 12 of the held sample container 10, and the sample in the container is sucked from the thin tube 46.

When the drive source 64 expands, it is pushed by the spring 68 and first returns until the other end of the drive source 64 contacts the stopper 78, and then one end returns to the original position. That is, the cleaning tank 34 first separates from the stopper 12, and then the support 24 separates from the bottom portion 14.

In claim 3, as shown in FIGS. 3 and 4,
The other end (right side in FIG. 3) of the movable part of the drive source 64a is connected to the cleaning tank 34, and the spring 68a is arranged between the stationary member 70a and the tip of the movable part of the drive source 64a. Therefore, when the drive source 64a contracts, first, one end (the left side in FIGS. 3 and 4) moves to the other end,
The support 24 abuts on the bottom of the sample container, the bottom fits into the depression 26, and the other end moves to the one end while compressing the spring 68a, and the cleaning tank 34 abuts on the stopper.

〔Example〕

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. However, unless otherwise specified, the materials, shapes, relative positions, etc. of the constituent devices described in this embodiment are not intended to limit the scope of the present invention to them only, and are merely descriptions. It's just an example.

FIG. 1 is a front view of an embodiment of the sample suction device of the present invention. Reference numeral 10 is a sample container in which a sample 16 such as blood to be measured is placed, and is sealed with a stopper 12 made of rubber or the like. Reference numeral 18 denotes a substrate, and each member and the like are attached to the substrate 18. The lower end surface of the substrate 18 has, for example, an inclination of 30 degrees, and two rails 20 and 28 are attached. A slider 22 is placed on one rail 20
20 Move straight back and forth. Similarly, sliders 30 and 42 are mounted on the other rail 28 and reciprocate linearly on the rail 28. A support 24 is attached to the slider 22. A cleaning tank 34 is attached to the slider 30 via a fixture 32. Further, a thin tube holder 48 to which a thin tube 46 is joined is attached to the slider 42 via a fitting 44. Reference numeral 50 is a holder for attaching the thin tube holder 48 to the fitting 44.

The support 24 is a member that comes into contact with the bottom portion 14 of the sample container 10,
A conical recess 26 is provided at the abutting position. The thin tube 46 has a needle-like shape.

The cleaning tank 34 is a hollow box having a discharge port 40 at the bottom, and small holes 36 and 38 are provided so that a thin tube 46 can pass therethrough. The sample container in which the sample has been stirred is tilted, for example, at 30 degrees so that the rubber stopper 12 side is below the bottom portion 14 as shown in FIG. First, the support 24 moves diagonally downward to contact the bottom portion 14, and then the cleaning tank 34 moves obliquely upward to contact the stopper 12, so that the sample container 10 has the support 24 and the cleaning tank 34. Caught in and held firmly.

After that, the thin tube 46 moves diagonally upward and pierces the stopper 12,
Enter the specimen container 10. The sample 16 is sucked from the thin tube 46 by operating the suction device 82 connected to the thin tube 46.
A fixed amount of the aspirated sample is collected by the quantification unit 80.
When the sample is completely sucked in, the reverse of the above procedure
6. Return to the original position in the order of the washing tank 34 and the support 24. Capillary 46
The cleaning liquid is supplied from the cleaning device 84 connected to the inner wall and the outer wall of the thin tube 46 by further supplying the cleaning liquid toward the thin tube 46 from the mouthpiece (not shown) provided in the cleaning tank 34. Are washed. The drainage liquid is discharged from the discharge port 40. Incidentally, 60 is a drive source such as an air cylinder attached to the substrate 18. The drive source 60 is attached to the base plate 18, and the piston rod 62 thereof is connected to the fixture 44. By expanding and contracting the piston rod 62,
46 moves straight back and forth.

Conventionally, two drive sources have been used to move the support 24 and the cleaning tank 34, respectively. In the present invention, this is 1
I made it possible to do it with a stand. This will be described with reference to FIG.

FIG. 2 is a view seen from the direction of arrow A in FIG.
Reference numeral 64 is a drive source such as an air cylinder for moving the support tool 24 and the cleaning tank 34. The drive source 64 is a fastening member 74, 76.
Is attached to the attachment 32. 72 is a mounting member. On the other hand, the piston rod 66 of the cylinder 63 passes through the disc 73, further penetrates the stationary member 70 attached to the substrate 18, and is connected to the support tool 24 at the tip portion. A spring 68 is arranged between the disc 73 and the cylinder 63. When the piston rod 66 is extended, the cylinder 63 is pushed by a spring 68 such as a compression coil spring and is in contact with a stopper 78 attached to the base plate 18.
As shown, the support 24 and the stationary member 70 are open.

Next, the piston rod 66 contracts. That is, the distance between the support tool 24 and the mounting tool 32 is reduced. In order to move the cylinder 63 and the fixture 32 to the left in FIG. 2, a relatively large force is required to compress the spring 68 such as a compression coil spring. No such force is needed to move the support 24 to the right, only a small force is required. Therefore, when the piston rod 66 contracts, first, the one with the smaller load contracts. That is, the tip end portion of the piston rod 66 and the support tool 24 move to the right while the cylinder 63 remains in contact with the stopper 78. Then, it abuts on the left end of the stationary member 70. When the support 24 abuts on the bottom of the sample container, the bottom fits into the recess 26, so that even if the position of the sample container is displaced, it is corrected. Next, the larger load shrinks. That is, while the support 24 remains in contact with the stationary member 70,
The contracting force of the piston rod 66 overcomes the force of the spring 68 such as a compression coil spring, and the cylinder 63 and the fixture 32 move leftward. Then, the cleaning tank 34 is brought into contact with the stopper of the sample container to hold the sample container between the support 24 and the cleaning tank 34.

On the contrary, when the piston rod 66 extends, the cylinder 63 first moves to the right by the action of the spring 68 such as a compression coil spring, and then the tip of the piston rod 66 moves to the left.

As described above, when the spring 68 is provided between the stationary member 70 and the cylinder 63, the tip of the piston rod 66 first moves to the right and then the cylinder 63 moves to the left, as described above.

It should be noted that two thin tubes can be provided, one for sample suction and the other for aeration. The details are described in the specification of the utility model registration application (Japanese Utility Model Application No. 63-65938) filed earlier by the applicant.

Next, another embodiment of the sample suction device of the present invention will be described with reference to FIGS. 3 and 4.

The sample suction device of this example has one end (left side in FIG. 3).
Is connected to the support tool 24, and the other end is connected to the cleaning tank 34 by penetrating the stationary member 70a.
64a, a spring 68a arranged between the other end of the drive source 64a and the outside of the stationary member 70a, and the other end of the drive source 64a in order to keep the spring 68a in a contracted state when the drive source 64a extends. Part or the cleaning tank 34, and a stopper 78a fixedly provided on the substrate 18 is included.

It is desirable to use an air cylinder as the drive source 64a. In this case, the piston rod 66a is connected to the cleaning tank 34, and the spring 68a is arranged between the stationary member 70a and the tip of the piston rod 66a.

When the piston rod 66a contracts as shown in FIG. 4, the cylinder 63a first moves to the right, the support 24 abuts on the bottom of the sample container, the bottom fits into the recess 26, and then the piston rod 66a. While pressing the spring 68a at the other end of
It moves to the one end side (left side), and the cleaning tank 34 comes into contact with the stopper.

Then, the thin tube advances to pass through the washing tank 34, pierces the stopper of the held sample container, and the sample in the container is sucked from the thin tube.

When the piston rod 66a extends as shown in FIG. 3,
The washing tank 34 is pushed by the spring 68a, and the stopper 78a
Until it comes into contact with the cylinder 63a, and then the cylinder 63a returns to its original position. That is, the cleaning tank 34 is first separated from the stopper, and then the support
24 separates from the bottom of the container. Other configurations and operations are similar to those in FIGS. 1 and 2.

[Effect of device]

Since the sample suction device of the present invention holds the member by sandwiching it from both sides of the sample container, one drive source 64 or 64a is used, so the cost of the device can be reduced and the size can be reduced. .

Further, the spring 68 or 68a is provided between the stationary member 70 and the other end of the drive source 64, or between the stationary member 70a and the tip of the movable part.
Therefore, when the drive source contracts, the support 24 first contacts the bottom of the sample container, and then the cleaning tank 34 contacts the stopper. Since the support tool is provided with the depression 26, if the position of the sample container is slightly deviated, the sample container is held after the position is corrected. Because of this, thin tubes
The operation to pierce 46 plugs can be performed reliably.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the sample suction device of the present invention, FIG. 2 is an explanatory view seen from the direction of arrow A in FIG. 1, and FIG. 3 is another embodiment of the device of the present invention. Explanatory diagram showing
FIG. 4 is an explanatory diagram of a main part in a state where the drive source in FIG. 3 is contracted. 10 …… Sample container, 12 …… Stopper, 14 …… Bottom part, 16 …… Sample,
18 …… Board, 20, 28 …… Rail, 22, 30 …… Slider,
24 …… Supporting tool, 26 …… Dimple, 32 …… Mounting tool, 34 …… Cleaning tank, 36,38 …… Small hole, 40 …… Discharge port, 42 …… Slider,
44 …… Mounting device, 46 …… Small tube, 48 …… Small tube holder, 50 ……
Holder, 60 …… Drive source, 62 …… Piston rod, 63, 63
a ... cylinder, 64, 64a ... drive source, 66,66a ... piston rod, 68,68a ... spring, 70,70a ... stationary member, 72 ... mounting member, 73 ... disc, 74, 76 ... Fastening member, 78, 78a ... Stopper, 80 ... Fixed amount part, 82 ... Suction device, 84 ... Cleaning device

Claims (4)

[Scope of utility model registration request] 1. A support tool (24) provided with a recess (26) moves toward the bottom of a sample container (10), and a washing tank (34) moves toward a stopper (12). The sample container (10) is sandwiched and held from both sides, the injection needle-shaped thin tube (46) penetrates the washing tank (34), and the stopper (12) is pierced to allow the sample in the sample container (10) to be held. In the suction device, one end penetrates the stationary member (70) and is connected to the support tool (24), and the other end is connected to the cleaning tank (34). A drive source (64), a spring (68) arranged between the drive source (64) and the inside of the stationary member (70), and a state in which the spring (68) is contracted when the drive source (64) is extended. In order to achieve the above, a stopper (78) provided so as to come into contact with the other end of the drive source (64) or the cleaning tank (34) is included. Fee suction device. 2. A drive source (64) is an air cylinder, a piston rod (66) is connected to a support (24), and a cylinder (63) is connected to a cleaning tank (34). The sample suction device according to claim 1. 3. A support tool (24) provided with a recess (26) moves toward the bottom of a sample container (10), and a washing tank (34) moves toward a stopper (12), The sample container (10) is sandwiched and held from both sides, the injection needle-shaped thin tube (46) penetrates the washing tank (34), and the stopper (12) is pierced to allow the sample in the sample container (10) to be held. In the suction device, one end is connected to the support tool (24) and the other end is connected to the cleaning tank (34) by penetrating the stationary member (70a). A drive source (64a), a spring (68a) arranged between the other end of the drive source (64a) and the outside of the stationary member (70a), and a spring (68a) when the drive source (64a) extends. A stopper (78a) provided so as to come into contact with the other end of the drive source (64a) or the cleaning tank (34) in order to make the contracted state. Sample suction device according to claim. 4. The drive source (64a) is an air cylinder,
The piston rod (66a) is connected to the cleaning tank (34), and a spring (68a) is arranged between the stationary member (70a) and the tip of the piston rod (66a). The sample suction device described.