JP2021065465A - Liquid transfer tool - Google Patents

Abstract

To provide a liquid transfer tool which reliably transfers a liquid with a simple constitution.SOLUTION: A liquid transfer tool 1 comprises: an unsealing member 20 which has a conduit needle 22 provided with an insertion part 22B for inserting a lure part of a syringe; and a guide member 10 which has a mounting part 12 movably housing the unsealing member 20 to attach to a vial 50. The guide member 10 has a holding part for holding the unsealing member 20 by regulating its movement.SELECTED DRAWING: Figure 4

Description

The present invention relates to a liquid transfer tool.

Conventionally, a vial and a liquid transfer tool attached to the vial have been disclosed. The liquid transfer tool of Patent Document 1 includes an opening member including a puncture member to be inserted into a rubber stopper of a vial, and a guide member formed in a double tubular shape and guiding the opening member with an inner cylinder. The opening member can advance downward and insert the puncture member into the rubber stopper by screwing the female screw formed on the outer side of the inner cylinder of the guide member with the male screw of the screw type syringe.

Patent No. 5965946

In the liquid transfer tool of Patent Document 1, when the tip of the puncture member is inserted into the rubber stopper from the beginning due to the limitation of the screwing amount of the syringe and the moving distance of the opening member, and the chemical solution is sealed in the vial from the beginning. Liquid leakage may occur during liquid transfer.

An object of the present invention is to provide a liquid transfer tool that reliably transfers a liquid with a simple configuration.

The liquid transfer tool of the present invention includes an opening member having a conduit needle provided with an insertion portion for inserting a luer portion of a syringe, and a guide member having an attachment portion that movably stores the opening member and can be attached to a vial. The guide member has a holding portion that regulates and holds the movement of the opening member.

According to the present invention, it is possible to provide a liquid transfer tool that reliably transfers a liquid with a simple configuration.

It is a perspective view of the liquid transfer tool which concerns on embodiment of this invention. A liquid transfer tool according to an embodiment of the present invention is shown, (a) is a perspective view of a guide member, and (b) is a perspective view of an opening member. It is an exploded perspective view of the liquid transfer tool which concerns on embodiment of this invention. The cross section of the main part corresponding to the cutting line AA of FIG. 3 in the liquid transfer tool according to the embodiment of the present invention is shown, (a) is a cross-sectional view of the main part before opening by the opening member, and (b) is a cross-sectional view of the main part. It is sectional drawing of the main part after opening by an opening member.

An embodiment of the present invention will be described with reference to the drawings. The liquid transfer tool 1 shown in FIG. 1 includes a guide member 10 and an opening member 20. Both members are molded by injection molding of a resin material such as polypropylene. The guide member 10 has a main body portion 11 for movably accommodating the opening member 20 and a mounting portion 12 that can be attached to the vial 50. The vial 50 is formed by blow molding of a synthetic resin material. The main body portion 11 is formed in a bottomed tubular shape having a substantially elongated hole shape on the inner and outer peripheral surfaces, and has an opening portion 13 and a closing portion 14. Therefore, the opening 13 and the closing portion 14 have a substantially elongated hole shape. The major axis direction of the opening 13 and the closing portion 14 coincides with the Y direction of the vial 50 (see FIG. 1). The size of the opening 13 and the closing portion 14 (liquid transfer tool 1) in the minor axis direction is equal to or smaller than the size of the vial 50 in the X direction (see FIG. 1). Further, a resin film may be attached to the opening 13.

The main body portion 11 has a plurality of protrusions 15 (holding portions) formed in an annular shape on the inner peripheral surface thereof. The protrusion 15 regulates and holds the movement of the opening member 20. The protrusions 15 are adjacent to each other at three locations, the protrusion 15a located on the uppermost side (most opening 13 side), the protrusion 15b adjacent to the lower side of the protrusion 15a, and the protrusion 15b adjacent to the lower side of the protrusion 15b (most). It is formed as a protrusion 15c (located on the closing portion 14 side) (see FIGS. 4 (a) and 4 (b)). The distance between the adjacent protrusions 15 and the protrusions 15c and the closing portion 14 is formed at substantially equal intervals. The distance between the adjacent protrusions 15 and the protrusions 15c and the closing portion 14 is formed to be slightly larger than the vertical length of the wall portion 23 described later in FIGS. 4 (a) and 4 (b). The protrusion 15a may be formed along the outer peripheral edge of the opening 13, and the upper end of the wall 23 may be engaged with the protrusion 15a.

As shown in FIG. 2A, the mounting portion 12 has a cylindrical shape, one end is connected to the closing portion 14 of the main body portion 11, and the other end has an opening 18. A communication hole 16 is formed at a position corresponding to the axial center of the mounting portion 12 in the closing portion 14. The inside of the mounting portion 12 and the inside of the main body portion 11 communicate with each other through the communication hole 16. The communication hole 16 has a circular shape, and a needle portion 22A, which will be described later, is inserted therethrough. Further, a locking portion 17 is provided on the inner peripheral surface of the mounting portion 12. The locking portion 17 is formed as an annular protrusion, and the opening 51 of the vial 50 can be locked to the mounting portion 12.

As shown in FIG. 2B, the opening member 20 has a substrate portion 21. The substrate portion 21 is formed into a substantially elongated hole shape following the shape of the inner peripheral surface of the main body portion 11. The outer shape of the substrate portion 21 is formed to be slightly smaller than the inner peripheral surface of the main body portion 11 and larger than the inner diameter of the protruding portion 15 (see FIGS. 4 (a) and 4 (b)). The substrate portion 21 is formed in a flat plate shape having a plurality of notched portions 24. The notch portions 24 have a substantially rectangular shape, and are formed at four equal intervals on the outer peripheral edge of the substrate portion 21. The notch 24 functions to allow air to escape between the substrate 21 and the closure 14. The same effect can be obtained by forming holes in the substrate portion 21 instead of the cutout portion 24. The substrate portion 21 has a conduit needle 22 provided eccentrically from the center of the substrate portion 21 corresponding to the communication hole 16. The conduit needle 22 has a needle portion 22A on the lower side of the substrate portion 21 and an insertion portion 22B on the upper side of the substrate portion 21 across the substrate portion 21 (see FIGS. 4 (a) and 4 (b)). ). The needle portion 22A sharpens as the distance from the substrate portion 21 increases. The needle portion 22A has a supply hole 22Aa at the tip of the needle portion 22A. The needle portion 22A is formed with a length of about 20 mm because the Teflon sheet 52 described later is easily stretched. The luer portion (tip portion) of the syringe can be inserted into the insertion portion 22B. The needle portion 22A and the insertion portion 22B have a flow path 22C communicating with each other inside (see FIGS. 4 (a) and 4 (b)). The flow path 22C communicates with the supply hole 22Aa.

Further, as shown in FIG. 3, the opening member 20 has a wall portion 23. Four wall portions 23 are formed so as to stand up with a slight inward inclination toward the insertion portion 22B side from the outer peripheral edge of the substrate portion 21 between the four notch portions 24. That is, the wall portion 23 is formed by separating the notch portion 24 extending from the outer peripheral surface of the substrate portion 21. Therefore, the wall portion 23 is formed to be curved. The cutout portion 24 has an elastic force even if it is formed only on the wall portion 23 side. Therefore, the notch portion 24 is not limited to being formed on the substrate portion 21 side. Each wall portion 23 has a regulation portion 23a. Each regulating portion 23a is formed on the outer upper end edge of the wall portion 23 along the upper end edge with a predetermined length. The height of each regulation portion 23a with respect to the wall portion 23 is highest at the top portion 23a1 and decreases as it approaches the substrate portion 21 (see FIGS. 4 (a) and 4 (b)). The outer shape of the upper end portion of the four restricting portions 23a (that is, the outer shape connecting the four top portions 23a1) in the top view is formed to be slightly smaller than the inner peripheral surface of the main body portion 11 and larger than the inner diameter of the protrusion portion 15. To. The upper end surface of the regulating portion 23a and the lower surface edge portion of the substrate portion 21 are sandwiched between the two protrusions 15 (or between the protrusions 15c and the closing portion 14) and are engaged with each other, whereby the opening member 20 is formed by the main body portion 11. Held within. In other words, the regulating portion 23a engages with the protruding portion 15 to limit the movement of the opening member 20. Further, the wall portion 23 has an elastic force in the radial direction.

As shown in FIGS. 3, 4 (a) and 4 (b), a rubber stopper 53 is fitted in the opening 51 of the vial 50. A Teflon sheet 52 (Teflon membrane film) (“Teflon” is a registered trademark) is attached to the lower surface of the rubber stopper 53 (inside the vial 50). The Teflon sheet 52 prevents adsorption between the content liquid filled in the vial 50 and the rubber stopper 53. The vial 50 contains a liquid chemical as a content, and can be formed into a relatively large volume of, for example, about 60 ml.

An example of using the liquid transfer tool 1 will be described. First, the liquid transfer tool 1 is attached to the vial 50 as shown in FIG. 1 by fitting the attachment portion 12 of the guide member 10 into the opening 51 of the vial 50 sealed by the rubber stopper 53 from the opening 18 side. Can be done.

Next, by inserting the luer portion of the syringe into the insertion portion 22B of the opening member 20, the opening member 20 and the syringe can be connected. Further, in order to facilitate the insertion of the luer portion of the syringe into the insertion portion 22B, the distance between the opening 13 and the protrusion 15a is preferably shorter than the length of the lure portion of the syringe. Here, the syringe is a large one having a size of 20 ml or more, and the luer portion has a lateral opening (in a biased position). The luer portion of the syringe may be provided with a needle. Here, the initial state of the opening member 20 housed in the guide member 10 is held between the protrusion 15a and the protrusion 15b (opening 13 side), and the conduit needle 22 included in the opening member 20 , Not in contact with the rubber stopper 53 of the vial 50 (see FIG. 4A). In other words, the distance between the protrusion 15b and the closing portion 14 is formed to be longer than the length of the needle portion 22A.

Next, a downward force is applied to the syringe connected to the opening member 20. Then, the substrate portion 21 is bent by the notch portion 24. As a result, the substrate portion 21 can get over the protrusion portion 15b. Then, the protrusion 15b relatively slides the regulation portion 23a. The height of the regulation portion 23a with respect to the wall portion 23 is highest at the top portion 23a1 and becomes smaller as it approaches the substrate portion 21, so that the regulation portion 23a smoothly gets over the protrusion portion 15b. When the restricting portion 23a gets over the protrusion 15b, it comes into contact with the inner peripheral surface of the main body 11 due to the elastic force of the wall 23, and the opening member 20 is held between the protrusion 15b and the protrusion 15c. To. Similarly, the opening member 20 held between the protrusion 15b and the protrusion 15c moves and is held between the protrusion 15c and the closing portion 14 (closed portion 14 side). When the opening member 20 is moved between the protrusion 15c and the closing portion 14, the conduit needle 22 inserts the communication hole 16 and penetrates the rubber stopper 53 of the vial 50 (see FIG. 4B). Next, by applying negative pressure to the syringe, the internal liquid (for example, 20 ml) of the vial 50 can be transferred into the syringe via the supply hole 22Aa and the flow path 22C. In the liquid transfer tool 1, when the syringe is to be removed, the regulating portion 23a engages with the protrusion 15c, so that the opening member 20 does not move with the syringe. Further, since the inner peripheral surface of the main body 11 has a flat shape formed into an elongated hole shape, rotation starting from the tip of the syringe can be suppressed. In addition, since the conduit needle 22 is formed eccentrically with respect to the center of the substrate portion 21, a large syringe or an L-shaped syringe can be easily used. Then, the syringe can be removed from the insertion portion 22B of the opening member 20, and the content liquid of the vial 50 can be transferred to another container.

Although the embodiment of the present invention has been described above, the present invention is not limited to the present embodiment and can be implemented with various modifications. The shape of the main body 11 is not limited to a long-hole-shaped bottomed cylinder, and may be cylindrical. The holding portion is not limited to the annular protrusion. For example, the holding portion may be a rib-shaped protrusion formed inside the main body portion 11. The rib-shaped protrusions can be formed so as to be radially arranged from the center of the main body 11 at a plurality of positions where the positions of the main body 11 are different in the vertical direction. The locking portion 17 is not limited to the annular protrusion, and may have a screw shape that is screwed with the outer circumference of the opening 51 of the vial 50.

The insertion portion 22B can include a spherical valve body and a joint member. The spherical valve body is formed in the flow path 22C inside the insertion portion 22B to be slightly larger than the diameter of the connection portion with the flow path 22C inside the needle portion 22A. The joint member is formed in a substantially cylindrical shape. The joint member is attached to the insertion portion 22B to form a valve chamber for accommodating the spherical valve body. The spherical valve body can swing in the valve chamber. The joint member has an opening for attaching a syringe and a valve body regulating portion that regulates the swing of the spherical valve body and allows only the chemical solution of the vial 50 to pass through. The valve body restricting portion is formed in a substantially elongated hole shape, and its length in the minor axis direction is formed to be smaller than the diameter of the spherical valve body.

Therefore, the insertion portion 22B is provided with the spherical valve body and the joint member, and when a negative pressure is applied from the syringe, the spherical valve body is attracted to the syringe side. It is kept in the room and only the chemical solution in the vial 50 is passed to the syringe side. Then, when the negative pressure from the syringe side disappears, the insertion portion 22B can block the flow path 22C by the spherical valve body.

1 Liquid transfer tool 10 Guide member 11 Main body 12 Mounting 13 Opening 14 Closing 15 Protrusion 15a Protrusion 15b Protrusion 15c Protrusion 16 Communication hole 17 Locking 18 Open 20 Opening member 21 Board 22 Conduit needle 22A Needle part 22Aa Supply hole 22B Insertion part 22C Flow path 23 Wall part 23a Restriction part 23a1 Top 24 Notch 50 Vial 51 Opening 52 Teflon sheet 53 Rubber stopper

Claims (5)

An opening member having a conduit needle provided with an insertion part for inserting the lure part of the syringe,
A guide member that movably stores the opening member and has a mounting portion that can be attached to a vial.
With
The guide member is a liquid transfer tool having a holding portion that regulates and holds the movement of the opening member. The opening member is
Board part and
A wall portion that stands up from the substrate portion and
Have,
The liquid transfer tool according to claim 1, wherein the wall portion has a notch formed on the outer peripheral edge of the wall portion. The guide member has a main body portion that movably stores the opening member.
The main body portion has the holding portion and
The liquid transfer tool according to claim 2, wherein the wall portion has a regulating portion that engages with the holding portion to regulate the movement of the opening member. The main body has a bottomed tubular shape.
With the opening
Closed part and
With the plurality of the holding parts
Have,
The liquid transfer tool according to claim 3, wherein the opening member can be held on the opening side and the closing portion side, respectively. The liquid transfer tool according to claim 3 or 4, wherein the main body has an elongated hole shape on the inner peripheral surface.

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