JPS6316176A - Vessel - Google Patents

Abstract

PURPOSE:To dispense with a pipet device, by unitizing a chamber part, where a liquid is housed, and a distributing pump part as one body, and performing suction and discharge of the liquid in utilizing the passage groove formed in a piston rod and a peripheral wall surface. CONSTITUTION:A vessel B is solidly made up of a chamber part 2, where a liquid 1 is housed, and a pump part 2 sucking this liquid 1 and distributing it. The pump part 3 consists of a valve chest 6 fitting a piston rod 5, where a passage groove 4 is installed, retractably, a liquid suction passage 7 and a liquid distributing passage 8. And, utilizing the passage groove 4 and a peripheral wall surface of the piston rod 5, suction and discharge of the liquid are carried out. Therefore, a pipet device heretofore in use is no longer required.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a container suitable for an automatic analyzer that performs biochemical analysis or immunological analysis, and in particular a container containing reagents corresponding to measurement items. The present invention relates to a container suitable for a reagent container.

[Prior art]

Among the containers applied to many conventional automatic analyzers, taking a reagent container as an example, a substantially box-shaped reagent container B°, which is simply configured to store a reagent, is shown in FIG. As shown, a plurality of reagent containers B'' containing reagents corresponding to the measurement item arranged in a loop are transferred to the reagent suction position, and then the required amount of reagent corresponding to the measurement item is extracted from the reagent container B''. Currently, the reagent is used to aspirate with a pipette P°, and then transfer the pipette to just above the reaction container to dispense the reagent into the reaction container.

[Problems with conventional technology]

However, when a reagent container with the conventional configuration described above is applied to an automatic analyzer, the required amount of reagent must be aspirated from inside the reagent container B with a pipette P'. In addition to becoming an essential component,
Since a cleaning device is also required to clean the pipette P°, the configuration of the automatic analyzer becomes significantly more complicated and larger.Furthermore, one pipette P° There is a problem that cross-contamination of reagents is likely to occur because the reagents of the seeds are aspirated, and when reagents are aspirated with a pipette P°, there is a problem that reagent loss is likely to occur because more reagent than the required amount must be aspirated. It also had

(Configuration and operation for solving problems) This invention has the following features:
It was devised in view of this current situation, and its purpose is to eliminate pipette devices;
As a result, it is possible to significantly reduce the size, simplicity, and cost of an automatic analyzer, and also to provide an easy-to-configure container that reduces reagent loss and eliminates the risk of cross-contamination of reagents. It is something.

In order to achieve the above object, the present invention is based on a container that is integrally formed with a chamber containing a liquid and a pump section that sucks and dispenses a required amount of the liquid in this chamber,
The pump section includes a valve chamber into which a piston rod having a flow passage groove is inserted so as to be able to move forward and backward, and a liquid suction flow having one end connected in communication with the valve chamber and the other end connected in communication with the chamber. road and
It has a liquid dispensing flow path with one end connected to the chamber and the other end connected to the discharge pipe, and by rotating the piston rod, when one of the flow paths is connected, the other end is connected to the discharge pipe. This is characterized in that the other flow path is closed by the circumferential surface of the piston rod.

(Examples) Hereinafter, the present invention will be described in detail based on the examples shown in Appendix 1': A side.

1 to 4 show a container according to a first embodiment of the invention.

In the container B according to this embodiment, a chamber 2 containing liquid 1 and a pump part 3 for sucking and dispensing the required amount of liquid 1 in this chamber 2 are integrally formed. A liquid inlet is formed in the upper part of the portion 2, and a cap C is removably attached to the liquid inlet. In addition, the reference numeral 9 in the figure is an air hole formed through the cap C.

The pump section 3 includes a bottomed cylindrical valve chamber 6 into which a piston rod 5, which is perpendicularly perforated through a channel groove 4, is fitted in a fluid-tight manner so that it can move forward and backward; A line of liquid suction channel 7 which is connected to the chamber 6 and the other end is connected to the chamber section 2, and a line whose one end is connected to the T distribution section 2 and the other end is connected to the discharge pipe P. By rotating the piston rod 5 every 180 degrees, one liquid suction channel 7 and one channel 111! 4 are in communication, the liquid dispensing channel 8 is connected to the piston rod 5.
The peripheral surface 5a of the piston rod 5 is fluid-tightly closed, and when the liquid dispensing channel 8 and the channel groove 4 are in communication, the liquid suction channel 7 is fluid-tightly closed by the peripheral surface 5a of the piston rod 5. It is configured to

Further, the discharge pipe P is removably screwed onto the lower end of the pump section 3, and when attached, the flow path of the discharge pipe P and the liquid dispensing flow path 8 are connected in communication.

Next, by the container B configured as follows, the same container B
A case will be described in which a required amount of liquid 1 is dispensed from within.

First, the piston rod 5 is raised from the state shown in FIG. In this case, the liquid suction channel 7 and the channel groove 4 communicate with each other,
On the other hand, since the liquid dispensing channel 8 is liquid-tightly closed by the circumferential surface 5a of the piston rod 5, the liquid l in the chamber 2 flows from the liquid suction channel 7 through the channel groove 4 into the valve chamber 6. and inflow.

When the piston rod 5 is raised to the position shown in FIG. 3 in this way, a certain amount of liquid 1' is contained in the valve chamber 6! J＜Satisfied.

When the piston rod 51i4 is rotated 180 degrees from the L state as shown in the figure, the liquid dispensing channel 8 and the channel groove 4 communicate with each other.On the other hand, the liquid suction channel 7 connects to the circumferential surface 5a of the piston rod 5. After the CM is tightly closed, when the piston rod 5 is pressed down and lowered, the liquid in the go 1 chamber 6 flows from the flow path groove 4 through the liquid dispensing flow path 8 and from the discharge pipe P to other sources. container (not shown).

Figures 5 to 7 show the capacity of this emitting device according to the second embodiment.

The basic structure of the container B according to this embodiment is the same as that of the container iB according to the first embodiment, or the container B according to the first embodiment is provided with a switching means for the piston rod 5. It is different from.

That is, the cutting means disposed in the piston rod 5 includes an upper gear 10 disposed at the upper end of the piston rod 5, and an upper gear disposed at a predetermined interval below the upper gear lO. 11, and a suppressor 12 disposed at the upper end of the piston rod 5, and a piston rod suppressor 14 is fitted in the engagement groove 13 of the presser 12 at a predetermined position. It is composed of Further, both gears 10, 11 disposed on the piston rod 5 are configured to mesh at a predetermined position with a spur gear 16 of a motor 15 disposed at a predetermined position. The spacing between the two gears 10° and 11 is determined by the relative relationship with the amount of liquid to be dispensed.

A case where the piston rod 5 can be turned 180 degrees by the switching means configured in this way will be described.

First, the piston rod 5 is raised from the state shown in FIG. 5 by the piston rod pressing member 14. In this case, the upper gear 11 is engaged with the spur gear 16 of the motor 15 by 1 m.
Furthermore, the liquid suction channel 7 and the channel groove 4 communicate with each other, while the liquid dispensing channel 8 is fluid-tightly closed by the circumferential surface 5a of the piston rod 5, so that the liquid in the chamber 2 is 1 flows into the valve chamber 6 from the liquid suction channel 7 via the channel groove 4 as the piston rod 5 moves up. When the piston rod 5 rises to the position shown in FIG. 6 in this way, the valve chamber 6
A certain amount of liquid 1 is filled inside, and the spur gear 16 of the motor 15 and the upper gear 10 mesh with each other.

When the motor 15 is then driven to rotate from the above state and the piston rod 5 is rotated 180 degrees as shown in FIG. Since the passage 7 is liquid-tightly closed by the circumferential surface 5a of the piston rod 5, when the piston rod 5 or the piston rod presser 14 presses down and descends, the liquid 1 in the valve chamber 6 is released.
is dispensed from the flow channel 4 through the liquid dispensing channel 8 and from the discharge pipe P into another container (not shown).

In the second embodiment, the switching means for the piston rod 5 is provided separately from the container B, but the present invention is not limited to this. It can also be configured in one piece. Further, in each of the above embodiments, the piston rod 5 is rotated 180 degrees to
Theory 1 takes as an example a configuration that performs one-way switching.
1t, but the present invention is not limited to this.

〔Effect of the invention〕

As explained above, in this invention, since the chamber in which the liquid is stored and the pump part that dispenses the liquid are integrated, there is no need for a separate bed device as in the past. It is possible to significantly reduce the size, simplification, and cost of the automatic analysis type.

In addition, in this invention, the liquid is sucked in and discharged using the flow path groove formed in the piston rod and the wall surface of the piston rod. As a result, the number of parts can be significantly reduced and the configuration simplified, and an extremely inexpensive container that does not cause reagent loss or cross-contamination of reagents can be provided, among other advantages. It has a great effect.

[Brief explanation of the drawing]

FIG. 1 is a section 1'Iil':JI showing the structure of a container according to the first embodiment of this invention 11, and FIG.
Line sectional view, FIG. 3 is a cross section L4 showing the liquid suction operation state by the same container, FIG. 4 is a cross section L''A showing the liquid discharge operation state y calm by the same container, and FIG. 5 is a second embodiment of the present invention. FIG. 6 is a cross-sectional view showing the configuration of the container according to the example, FIG. 6 is a cross-sectional view showing the liquid suction operation state of the same container, FIG. 7 is a front view showing the liquid discharge operation state of the same container, and FIG. 8 is a conventional The configuration of the reagent container is shown 1
FIG. [Explanation of symbols] B... Container P... Discharge pipe l... Liquid
2... Chamber part 3... Pump part 4
...Flow path groove 5...Piston rod 6...Valve chamber 7
...Liquid suction channel 8...Liquid dispensing channel Patent applicant: NITTECH ENGINEERING Co., Ltd. Representative: Tetsu Yamaguchi, patent attorney Figure 1 Figure 3 Figure 4

Claims (1)

[Claims] This is a container in which a chamber containing a liquid and a pump section that aspirates and dispenses a required amount of the liquid in the chamber are integrally formed, and the pump section is a piston having a flow channel formed therein. a valve chamber in which a rod is fitted so as to be movable forwards and backwards; a liquid suction flow path having one end connected in communication with the valve chamber and the other end connected in communication with the chamber; and one end connected in communication with the chamber and the other end. has a liquid dispensing channel that is connected to the discharge pipe, and by rotating the piston rod, when one channel is communicating, the other channel is connected to the circumferential surface of the piston rod. A container configured to be occluded.