JP2020142186A - Suction tool and dispenser - Google Patents

Abstract

To provide a suction tool having such a simple configuration that a non-use suction nozzle of arranged plural suction nozzles stops to suck without operation of a user, and a dispenser.SOLUTION: A suction tool 10 comprises a base member 14 on which suction port parts 12 are arranged, and suction nozzles 16 which are respectively connected to each suction port part. The suction nozzle 16 comprises: a nozzle base end side member 18; an advancing/retreating member 20 of which a head 20t projects to a suction nozzle tip side with respect to the nozzle base end side member 18, and is provided so as to be able to advance/retreat with respect to the nozzle base end side member 18; a compression coil spring 22 which energizes the advancing/retreating member 20 in a nozzle tip direction; and a changeover mechanism 24 which is formed by the nozzle base end side member 18, the advancing/retreating member 20 and the compression coil spring 22, makes non-communication between a suction port M and the suction port part 12 when the advancing/retreating member 20 extends and is positioned at an end E, and makes communication between the suction port M and the suction port part 12 when the advancing/retreating member 20 moves to the suction nozzle base end side.SELECTED DRAWING: Figure 1

Description

The present invention relates to a suction tool and a dispensing device in which suction nozzles are arranged.

There is known a suction tool in which suction nozzles are arranged on the suction surface side and a suction tip can be detachably attached to each suction nozzle (see, for example, Patent Document 1).

As such a suction tool, for example, it is used as a suction tool for sucking a sample supernatant or the like.

As an example, when using a suction tool, a suction tip is attached to each suction nozzle, the suction nozzle is directed downward, and the suction nozzle is arranged above each test tube arranged in a rack or the like. Then, the suction tool is lowered and each suction tip is inserted into each test tube at the same time, and the supernatant liquid of each sample is sucked from each suction tip.

Japanese Unexamined Patent Publication No. 2013-66851

By the way, depending on the shape of the rack on which the test tube is erected and the test content of the sample, the test may be performed without using some suction nozzles. In this case, if the unused suction nozzle (hereinafter referred to as the unused suction nozzle) is left open, air is sucked from the unused suction nozzle, which may hinder the suction action of other suction nozzles. There are many. Therefore, new work such as covering the unused suction nozzle is required.

Therefore, an object of the present invention is to provide a suction tool and a dispensing device having a simple configuration in which suction is stopped even if the user does not operate the suction nozzles that are not used among the plurality of arranged suction nozzles. To do.

In order to solve the above problems, the suction tool according to the present invention includes a base member in which suction ports are arranged and suction nozzles connected to each suction port of the base member. The suction nozzle has a nozzle base end side member connected to the suction port portion and a head portion protruding toward the suction nozzle tip side from the nozzle base end side member, and the nozzle base end side member. The advancing / retreating member provided so as to be able to advance / retreat with respect to the nozzle, the urging member for urging the advancing / retreating member toward the nozzle tip, the nozzle base end side member, the advancing / retreating member, and the urging member When the advancing / retreating member is formed and is located at the extension end, the suction port of the suction nozzle and the suction port portion of the base member are made non-communication, and when the advancing / retreating member moves to the suction nozzle base end side, the suction nozzle base end side. It is characterized by including a switching mechanism for communicating the suction port of the suction nozzle and the suction port portion of the base member.

Further, the dispensing device according to the present invention is characterized by including the suction tool according to the present invention.

According to the present invention, it is possible to provide a suction tool and a dispensing device having a simple configuration in which suction is stopped even if the user does not operate the suction nozzles that are not used among the plurality of arranged suction nozzles.

It is a perspective view of the suction tool which concerns on 1st Embodiment. It is a bottom view of the suction tool which concerns on 1st Embodiment. It is a developed view explaining that the suction tip is attached to the suction nozzle in the suction tool which concerns on 1st Embodiment. In the suction tool according to the first embodiment, (a) is a side sectional view for explaining a state before the suction tip is attached to the suction nozzle, and (b) is a state after the suction tip is attached to the suction nozzle. It is a side sectional view to explain. It is a partially enlarged view of FIG. 4 (b). FIG. 5 is a schematic side view illustrating that the suction tool according to the first embodiment lowers the suction tip into a test tube containing a sample to suck the supernatant liquid. In the suction tool of the modified example of the first embodiment, (a) is a side sectional view explaining a state before the suction tip is attached to the suction nozzle, and (b) is after the suction tip is attached to the suction nozzle. It is a side sectional view explaining a state. It is a partially enlarged view of FIG. 7B. It is a perspective view explaining the dispensing apparatus which concerns on 2nd Embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[First Embodiment]
First, the first embodiment will be described. FIG. 1 is a perspective view of the suction tool according to the present embodiment. FIG. 2 is a bottom view of the suction tool according to the present embodiment. FIG. 3 is a developed view illustrating that the suction tip is attached to the suction nozzle in the suction tool according to the present embodiment. 4A and 4B are suction tools according to the present embodiment, in which FIG. 4A is a side sectional view illustrating a state before the suction tip is attached to the suction nozzle, and FIG. 4B is after the suction tip is attached to the suction nozzle. It is a side sectional view explaining the state of. FIG. 5 is a partially enlarged view of FIG. 4 (b).

As shown in FIGS. 1 to 5, the suction tool 10 according to the present embodiment is connected to the base member 14 in which the suction port portions 12 are arranged and the suction port portions 12 of the base member 14, respectively. It is provided with a nozzle 16.

In the suction nozzle 16, the nozzle base end side member 18 connected to the suction port portion 12 and the head portion of the suction nozzle 16 project toward the suction nozzle tip side from the nozzle base end side member 18, with respect to the nozzle base end side member 18. The advancing / retreating member 20 provided so as to be able to advance / retreat, the compression coil spring 22 (biasing member) that abuts on the advancing / retreating member 20 and urges the nozzle tip, the nozzle base end side member 18 and the advancing / retreating member 20. It is formed by a compression coil spring 22 and includes a switching mechanism 24 for switching between starting and stopping suction from the advancing / retreating member 20.

As shown in FIGS. 4 and 5, the advancing / retreating member 20 includes a tip-side advancing / retreating member 20p having the head portion 20t to which the suction tip T can abut and the rear side of the tip-side advancing / retreating member 20p (FIG. It is provided with a rod-shaped rear side advancing / retreating member 20q which is fixed to the upper side in 4) and inserts the nozzle base end side member 18. The front end side advancing / retreating member 20p includes the above-mentioned head portion 20t and a base portion 20k extending from the rear side of the head portion 20t and fixing the rear side advancing / retreating member 20q.

The nozzle base end side member 18 is a rear portion (upper part in FIG. 4) of the nozzle base end side head member 18p for inserting the base portion 20k and the rear side advancing / retreating member 20q so as to be able to move forward and backward, and the nozzle base end side head member 18p. Is provided with a nozzle base end side main member 18q for fixing the nozzle.

The shape of the tip 18pt of the nozzle base end side head member 18p is determined according to the shape of the mounting opening Tm of the suction tip T so that the suction tip T can be easily mounted, and various suction tips. It is possible to replace the nozzle base end side head member 18p and the tip side advancing / retreating member 20p accordingly. Then, the rear side advancing / retreating member 20q inserts the base end side opening 18m of the nozzle base end side head member 18p.

The nozzle base end side main member 18q is formed with an insertion hole 18qh through which the rear side advancing / retreating member 20q can be inserted / retreated. A cylindrical suction path Ga having a ring-shaped cross section is formed between the insertion hole 18qh and the rear side advancing / retreating member 20q.

A holding portion H for holding the X ring 19 (seal member) is formed by the nozzle base end side head member 18p and the nozzle base end side main portion member 18q. The rear side advancing / retreating member 20q inserts the X ring 19.

Further, the rear side advancing / retreating member 20q includes a vertical suction path Gb that communicates with the suction path of the tip side advancing / retreating member 20p and extends along the longitudinal direction of the rear side advancing / retreating member 20q, and a vertical suction path Gb. A lateral suction path Gc extending in a direction orthogonal to the longitudinal direction (left-right direction in FIG. 4) on the rear end side and opening on the outer peripheral side of the rear side advancing / retreating member 20q is formed.

Further, inside the compression coil spring 22, a receiving portion 23 is arranged to support the lower end side of the compression coil spring 22 by inserting the rear side advancing / retreating member 20q. The rear side advancing / retreating member 20q inserts the receiving portion 23 so as to be able to advance / retreat.

An E-ring 25 for preventing the nozzle from coming off is attached between the receiving portion 23 and the nozzle base end side member 18 on the outer peripheral portion of the rear side advancing / retreating member 20q.

With such a configuration, the inside of the suction tip abuts on the head 20t of the advancing / retreating member 20, and the advancing / retreating member 20 retracts (that is, rises), and the suction tip T is placed on the tip side of the nozzle base end side head member 18p. Is to be installed.

Then, when the advancing / retreating member 20 is located at the extension end E (see FIGS. 1 and 4A), the lateral suction path Gc is not located above the X ring 19, and therefore the lateral suction path Gc is not located above the X ring 19. The path Gc does not communicate with the cylindrical suction path Ga. Therefore, the switching mechanism 24 makes the suction port M of the advancing / retreating member 20 and the suction port portion 12 of the base member 14 non-communication (see FIG. 4A).

When the advancing / retreating member 20 moves to the suction nozzle base end side (base member 14 side), the lateral suction path Gc also moves to the suction nozzle base end side, and the lateral suction path Gc is located above the X ring 19. As a result, the lateral suction path Gc communicates with the cylindrical suction path Ga. Therefore, the switching mechanism 24 communicates the suction port M of the advancing / retreating member 20 with the suction port portion 12 of the base member 14 (see FIG. 4B).

Further, in the present embodiment, the ejector portion or the aspirator portion communicating with the suction port portion 12 is arranged inside the base member 14, and the ejector portion or the aspirator portion sucks by the jet line formed inside the base member 14. It is configured to generate a force to act on the suction port portion 12.

Specifically, in order to form a jet line flowing to the ejector portion or the aspirator portion inside the base member 14, connecting pipes 32 and 34 (see FIG. 1) are provided at the center of the upper surface of the base member 14 and the base member 14, respectively. It is connected to the side of the. A suction path communicating with the suction port portion 12 communicates with the ejector portion or the aspirator portion. The connection pipe 32 is inserted into the space Z (see FIG. 3) penetrating the central portion of the support portion 30 and is connected to the upper surface side of the base member 14.

Further, the base member 14 is provided with a substantially cylindrical and thick support portion 30 extending upward from the upper central portion when the suction nozzle 16 is directed downward. Then, by pressing the support portion 30 downward, the head portion 20t comes into contact with the mounting opening Tm of the suction chips T arranged below the suction port portion 12 and is pressed. As a result, the head 20t moves (backward) in the direction of the nozzle base end side member 18, and the advancing / retreating member 20 and the nozzle base end side member 18 are switched from non-communication to communication and the nozzle base end side head. The suction tip T is attached to the tip portion 18pt of the member 18p.

(Action, effect)
The actions and effects of this embodiment will be described below. In order to use the suction tool 10, a suction tip T having a standard corresponding to the sample to be measured and the test tube is selected. Then, the selected suction tip T is attached to each suction nozzle. At the tip of the suction tip T, openings Ts are formed so that a liquid (such as a supernatant liquid of a sample) can be sucked into the tip.

In this mounting, the suction nozzle 16 is arranged in a rack for the suction nozzle 16 (not shown), and the suction tool 10 is arranged above the rack. Then, while applying a suction force from the suction port portion 12 of the base member 14 to the suction nozzle 16, the head 20t of the advancing / retreating member 20 is brought into contact with the mounting opening Tm of the suction tip T, and the suction tool 10 is pushed down. Then, the suction tip T is attached to the head 20t. In addition, this series of mounting operations may be performed automatically by using the mounting device, or may be performed manually. In the case of manual operation, it is preferable that the outer peripheral side of the support portion 30 has a grip shape from the viewpoint of facilitating pressing each suction nozzle 16 with a uniform force.

Here, when the suction tip T is arranged in the rack for the suction tip, the suction tip T is not arranged at the position corresponding to the unused suction nozzle 16n. Therefore, the suction tip T is not attached to the unused suction nozzle 16n. The suction nozzles that serve as the unused suction nozzles 16n are, for example, a plurality of suction nozzles that are lined up in a row at specific positions.

After mounting the suction tip T, the suction tool 10 is arranged so that each suction nozzle 16 is located above each test tube P (see FIG. 6) containing the sample arranged in the rack. Then, the suction tool 10 is lowered while sucking air from the suction nozzle 16. The descending height position is a height position set in advance according to the sample main part SM remaining in the test tube after removing the unnecessary supernatant liquid SL (after sucking into the suction tip).

As a result, a suction flow F (see FIG. 5) is generated in the suction nozzles 16 other than the unused suction nozzle 16n, and each suction tip T is simultaneously inserted into the supernatant liquid SL of each sample to release the finished liquid of the sample. It is sucked up into the suction tip T (see FIG. 6). Here, when the sample is sucked into the suction tip T, the advancing / retreating member 20 is located at the extension end E in the unused suction nozzle 16n, so that the suction port M of the unused suction nozzle 16n and the suction port portion of the base member 14 There is no communication with 12. Therefore, no suction flow is generated in the unused suction nozzle 16n, and air is not sucked from the unused suction nozzle 16n.

After sucking the supernatant liquid SL in this way, the suction tool 10 is raised to pull out the suction tip T from the test tube P. Then, the remaining sample main part SM is analyzed.

As described above, in the present embodiment, when the sample is sucked into the suction tip T, the suction port M of the unused suction nozzle 16n and the suction port portion 12 of the base member 14 are not communicated with each other in the unused suction nozzle 16n. It has become. Therefore, it is completely prevented that air is sucked from the unused suction nozzle 16n, and the suction action of the other suction nozzles 16 is not hindered. Therefore, among the plurality of arranged suction nozzles 16, the unused suction nozzle 16 realizes a suction tool 10 having a simple structure in which suction is stopped even if the user does not operate the suction nozzle 16.

Further, the nozzle base end side member 18 includes a nozzle base end side head member 18p through which the advancing / retreating member 20 can be inserted and the opening Tm for mounting the suction tip T can be mounted on the tip side. When the suction tip T is attached, the inside of the suction tip abuts on the tip side advancing / retreating member 20p, the tip side advancing / retreating member 20p retracts, and the suction tip is placed on the tip side of the nozzle base end side head member 18p. It is configured to be equipped with T.

Then, when the suction tip T is attached, the head 20t is pressed by the suction tip T and moves upward relative to the nozzle base end side member 18. Then, after the relative movement to the rising end of the nozzle base end side member 18, this relative movement is stopped. In this state, suction is performed by two forces, a fitting force due to the head 20t and the mounting opening Tm being pressed against each other, and a suction force for sucking the suction tip T by air suction from the head 20t. The tip T is held by the head 20t with sufficient force.

Further, the base member 14 is provided with a support portion 30 extending upward from the upper central portion when the suction nozzle 16 is directed downward, and by pressing the support portion 30 downward, the suction nozzle 16 is placed below the suction nozzle 16. The arranged suction tips T can be attached to the head 20t. That is, since the support portion 30 extends from the upper central portion of the base member 14, the head 20t of each suction nozzle 16 is pressed against each suction tip T with an equal force by pressing the support portion 30. can do.

Further, in the present embodiment, the ejector portion or the aspirator portion communicating with the suction port portion 12 is arranged inside the base member 14, and the suction force generated in the ejector portion or the aspirator portion acts on the suction port portion 12. ing. Therefore, the suction force from each suction port portion 12 can be made uniform with a simple configuration.

<Modification example>
In the first embodiment, a cylindrical suction path Ga is formed between the insertion hole 18qh and the rear side advancing / retreating member 20q, and in the switching mechanism 24, the lateral suction path Gc and the cylindrical suction path Ga are not communicated with each other. Although the configuration has been described in which the communication can be switched, a configuration in which the communication can be switched may be used. Hereinafter, a modified example will be described, but the same names and symbols will be used for the components having the same functions as those in the first embodiment, and the description thereof will be omitted as appropriate.

For example, as shown in FIGS. 7 and 8, the suction nozzle 116 has a nozzle base end side member 118, a tip side advancing / retreating member 120 capable of advancing / retreating with respect to the nozzle base end side member 118, and an advancing / retreating member 120. A compression coil spring 122 that abuts on the nozzle base end side of the nozzle is provided, and the compression coil spring 122 is arranged in the insertion hole 118qh of the nozzle base end side member 118 to urge the advancing / retreating member 120 toward the nozzle tip side. Good.

In this case, the proximal end side extending portion 127 that extends laterally to the proximal end side extending portion 127 extending on the proximal end side of the distal end side advancing / retreating member 120 (member corresponding to the distal end side advancing / retreating member 20p) has a proximal end side extending portion. When the opening 127 m is formed and the tip side advancing / retreating member 120 is located at the extension end, the suction port M of the suction nozzle 116 and the suction port portion 12 of the base member 14 are not communicated with each other, and the tip side advancing / retreating member When the 120 moves to the suction nozzle base end side (base member 14 side), the suction port M and the suction port portion 12 communicate with each other through the extension portion opening 127 m on the base end side, and a suction flow F (FIG. 8) is generated. It may be configured to be used.

[Second Embodiment]
Next, the second embodiment will be described. FIG. 9 is a perspective view illustrating the dispensing device according to the present embodiment. The dispensing device 200 according to the present embodiment includes a suction tool having the same configuration and function as the suction tool described in the first embodiment. Hereinafter, for convenience of explanation, the reference numerals given in the first embodiment will be described using the same reference numerals.

The dispensing device 200 uses a separating plate B (see FIGS. 1, 4, 7, and 8) for dropping the suction tip T (all of which see FIG. 4 and the like) mounted on the suction nozzle 16 from the suction tool. ) Is provided.

The separation plate B is provided with insertion holes 18qh through which the suction nozzles 16 are inserted so as to be able to move forward and backward with respect to the nozzle base end side member 18.

In the present embodiment, the suction tips T are arranged in a predetermined setting (for example, an arrangement in which the arrangement and non-arrangement of the suction tips are alternately generated), and are attached to the suction tool as described in the first embodiment.

Then, after finishing the use of the suction tip T (suction of the supernatant liquid, etc.), the suction tool is moved to the drop position (disposal position) of the suction tip T, and the separation plate B is moved (that is, lowered) to the suction nozzle tip side. By moving), the separation plate B is brought into contact with the upper edge of the suction tip T, and the suction tip T is dropped from the tip side advancing / retreating member 20p.

As a result, among the plurality of arranged suction nozzles, the suction nozzles that are not used can be dispensed using a suction tool having a simple structure that stops suction without the user's operation.

Although the embodiments have been described above, these embodiments are examples for embodying the technical idea of the present invention, and specify the material, shape, structure, arrangement, etc. of the component parts to the above embodiments. Instead, it can be implemented with various changes within the range that does not deviate from the gist.

10 Suction tool 12 Suction port 14 Base member 16 Suction nozzle 16n Unused suction nozzle 18 Nozzle base end side member 18m Base end side opening 18p Nozzle base end side head member 18pt Tip part 18q Nozzle base end side main part member 18qh Insertion Hole 19 X ring 20 Advance / retreat member 20k Base 20p Tip side advance / retreat member 20q Rear side advance / retreat member 20t Head 22 Compression coil spring (urging member)
23 Receiving part 24 Switching mechanism 25 E-ring 30 Support part 32 Connection pipe 34 Connection pipe 116 Suction nozzle 118 Nozzle base end side member 118qh Insertion hole 120 Advance / retreat member 122 Compression coil spring 127 Base end side extension part 127m Base end side extension Part opening 200 Dispensing device B Separation plate E Extension end F Suction flow Ga Cylindrical suction path Gb Vertical suction path Gc Horizontal suction path H Holding part M Suction port P Test tube SL supernatant SM Specimen main part T Suction tip Tm mounting opening Ts opening Z space

Claims (6)

A suction tool including a base member in which suction ports are arranged and suction nozzles connected to each suction port of the base member.
The suction nozzle
The nozzle base end side member connected to the suction port portion and
A moving member whose head protrudes toward the tip of the suction nozzle from the nozzle base end side member and is provided so as to be able to move forward and backward with respect to the nozzle base end side member.
An urging member that urges the advancing / retreating member toward the tip of the nozzle,
The suction port of the suction nozzle and the suction port portion of the base member are formed by the nozzle base end side member, the advancing / retreating member, and the urging member, and when the advancing / retreating member is located at the extension end. A suction tool that is non-communication and includes a switching mechanism that communicates the suction port of the suction nozzle and the suction port portion of the base member when the advancing / retreating member moves to the base end side of the suction nozzle. The nozzle base end side member includes a nozzle base end side head member through which the advancing / retreating member can be inserted and an opening for mounting a suction tip can be mounted on the tip side.
The first aspect of claim 1, wherein the inside of the suction tip abuts on the advancing / retreating member, the advancing / retreating member retracts, and the suction tip is attached to the tip end side of the nozzle base end side head member. Suction tool. The base member is provided with a support portion extending upward from the upper central portion when the suction nozzle is directed downward.
2. The second aspect of the present invention is characterized in that, by pressing the support portion downward, the suction tips arranged below the suction nozzle are mounted on the nozzle base end temporal member. Suction tool. The ejector portion or the aspirator portion communicating with the suction port portion is arranged inside the base member.
The suction tool according to any one of claims 1 to 3, wherein a suction force generated in the ejector portion or the aspirator portion acts on the suction port portion. A dispensing device comprising the suction tool according to any one of claims 1 to 4. An insertion hole for inserting each of the suction nozzles is arranged, and a separation plate provided so as to be able to move forward and backward with respect to the nozzle base end side member is provided.
The dispensing according to claim 5, wherein when the separation plate moves to the tip end side of the suction nozzle, the suction tip comes into contact with the suction tip attached to the advancing / retreating member and the suction tip is disengaged from the advancing / retreating member. apparatus.

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