Vial adapter

Abstract

To provide a vial adapter that eliminates concerns about liquid leakage and coring, is easy to attach to and detach from vials, and can be used in a wide range of applications. [Solution] A vial adapter having a vial fixing part, an upper vial receiving part, and an injection needle receiving part, with an injection needle receiving hole at the interface between the upper vial receiving part and the injection needle receiving part. The vial adapter has a protrusion for detachably installing a vial inside. The vial adapter also has a protrusion on its upper part for detachably installing an injection needle fixing part.

Description

Technical Field

[0001] The present invention relates to a vial adapter used when transferring a chemical solution enclosed in a vial.

Background Art

[0002] A vial adapter is known as an auxiliary tool used to suck up a chemical solution enclosed in a vial with a syringe. Normally, a chemical solution is enclosed inside a vial, and a flexible member such as synthetic rubber called a septum is installed on the upper part of the vial. A vial adapter having a penetrating part that penetrates the flexible member such as synthetic rubber called this septum has been proposed (Patent Documents 1 to 4). By using these vial adapters, it is said that the chemical solution inside the vial can be easily transferred to a syringe or the like.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, conventional vial adapters use a cylindrical component with a larger outer diameter than the injection needle for the through-hole. Therefore, when the through-hole of the vial adapter is inserted through the septum at the top of the vial, problems may arise such as leakage of the drug solution from inside the vial or scraping away of the flexible component of the septum, such as the synthetic rubber called the coring. In particular, when coring occurs, the drug solution inside the vial is directly exposed to the outside air, which creates the problem that the drug solution inside the vial must be discarded after a single use. Furthermore, some vial adapters use metal needles as the through-holes, but these through-holes are specific to the vial adapter, making it impossible to change their size, which limits their applications. Furthermore, conventional vial adapters have problems such as the claws of the vial adapter digging into the neck of the vial when attached, making it difficult to attach and detach them easily. The objective of the present invention is to provide a vial adapter that eliminates concerns about liquid leakage and coring, is easy to attach to and detach from vials, and can be used in a wide range of applications. [Means for solving the problem]

[0005] In order to solve the above problems, the inventors conducted diligent studies and found that a vial adapter having a vial fixing portion, a vial upper receiving portion, and an injection needle receiving portion, with an injection needle receiving hole at the interface between the vial upper receiving portion and the injection needle receiving portion, is suitable for the purpose of the present invention, and thus the present invention was completed.

[0006] In other words, the present invention is [1] It has a vial fixing part, a vial upper receiving part, and an injection needle receiving part, The vial fixing part has a cylindrical part and an upper part for housing the vial inside, and the inner surface of the cylindrical part has a plurality of protrusions for detachably fixing the vial. The upper vial receiving section has a cylindrical part for storing vials and a ceiling part for storing the upper end of the vial inside. The injection needle receiving section has a cylindrical portion for storing the injection needle and the injection needle fixing portion inside, and a plurality of protrusions on the inner surface of the cylindrical portion for storing the injection needle for detachably fixing the injection needle fixing portion. The present invention provides a vial adapter characterized by having a hole for inserting an injection needle in the ceiling portion of the upper vial receiving portion, which forms the interface between the upper vial receiving portion and the injection needle receiving portion. [Effects of the Invention]

[0007] The vial adapter of the present invention can house a vial internally, and since it has multiple protrusions on the inner surface of the cylindrical part of the vial fixing section, the vial can be detachably fixed inside. Furthermore, even if the outer diameter and length of the injection needle change, the injection needle receiving section can flexibly accommodate it, so unlike conventional vial adapters, its use is not fixed, and it has a wide range of applications. Furthermore, since only the injection needle passes through the septum, a flexible component made of synthetic rubber or similar material located at the top of the vial, and there is no need to pierce the septum with a thick insertion part like in conventional vial adapters, leakage from the vial can be prevented. In addition, because the injection needle can be precisely inserted into the septum from a vertical direction, coring can be prevented. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 is a schematic front view illustrating the vial adapter of the present invention as viewed from the side. [Figure 2] Figure 2 is a schematic top view illustrating the vial adapter of the present invention as seen from above. [Figure 3] Figure 3 is a schematic front cross-sectional view illustrating the vial adapter of the present invention as viewed from the side. [Figure 4] Figure 4 is a schematic bottom view illustrating the vial adapter of the present invention as viewed from the bottom. [Figure 5]FIG. 5 is a schematic diagram for explaining how to install a syringe on the vial adapter of the present invention.

Embodiments for Carrying out the Invention

[0009] The vial adapter according to the present invention will be described in detail based on embodiments with reference to the drawings below. The vial adapter of the present invention is not limited in any way by the following embodiments.

Examples

[0010] FIG. 1 is a schematic front view illustrating the state of observing the vial adapter of the present invention from the side. FIG. 2 is a schematic top view illustrating the state of looking down on the vial adapter of the present invention from above. As illustrated in FIG. 1, the vial adapter 100 of the present invention includes a vial fixing portion 10, a vial upper receiving portion 20, and a syringe needle receiving portion 30. The vial adapter 100 of the present invention can be integrally formed, for example, with a synthetic resin such as polyethylene or polypropylene.

[0011] As also illustrated in FIG. 2, the vial adapter 100 of the present invention has an upper surface portion 12 of the vial fixing portion 10 and a ceiling portion 22 of the vial upper receiving portion 20. The syringe needle receiving portion 30 is cylindrical, and when looking down on the vial adapter 100 from above, a syringe needle insertion hole 24 can be confirmed. The upper surface portion 12 of the vial fixing portion 10 and the ceiling portion 22 of the vial upper receiving portion 20 in the vial adapter 100 are continuously formed, and when light is applied from the back in FIG. 2, the light only passes through the portion of the syringe needle insertion hole 24.

[0012] FIG. 3 is a schematic front cross-sectional view illustrating the state of observing the vial adapter of the present invention from the side. As illustrated in FIG. 3, it has a cylindrical portion 14 and an upper surface portion 12 for storing a vial inside the vial fixing portion 10, and a plurality of protrusions 16 for detachably fixing the vial are provided on the inner surface of the cylindrical portion 14. The plurality of protrusions 16 come into contact with the side surface of the vial, and the vial inserted inside the vial fixing portion 10 can be fixed by frictional force. In the case of FIG. 3, the protrusions 16 are installed in the vertical direction and there are no claws on the vial, so the vial can be easily and detachably fixed.

[0013] Also, as illustrated in FIG. 3, a cylindrical portion 26 for storing a vial and a ceiling portion 22 are continuously installed in the vial upper receiving portion 20. The upper part of the vial can be inserted into the cylindrical portion 26 for storing the vial of the vial upper receiving portion 20. In addition, since the ceiling portion 22 is installed in the vial upper receiving portion 20, even if the vial is inserted inside the vial adapter 100 of the present invention, the vial will not penetrate.

[0014] Also, an injection needle insertion hole 24 penetrating vertically with reference to FIG. 3 is installed in the ceiling portion 22 of the vial upper receiving portion 20, and through this injection needle insertion hole 24, the needle of the syringe can be inserted into the septum of the vial.

[0015] Also, an injection needle receiving portion 30 is installed at the upper part of the vial adapter 100 of the present invention. The injection needle receiving portion 30 has a cylindrical portion 32 for storing an injection needle and an injection needle fixing portion inside, and a plurality of protrusions 34 for detachably fixing the injection needle fixing portion are installed on the inner surface of the cylindrical portion 32 for storing the injection needle. The plurality of protrusions 34 come into contact with the side surface of the injection needle fixing portion, and the injection needle inserted inside the injection needle receiving portion 30 can be fixed by frictional force. Increasing the number of protrusions 34 increases the contact area between the vial adapter 100 and the injection needle fixing part, thus increasing the frictional force. Conversely, decreasing the number of protrusions reduces the contact area between the vial adapter 100 and the injection needle fixing part, thus decreasing the frictional force. In this way, by increasing or decreasing the shape and number of protrusions 34, the degree of attachment and detachment to the injection needle fixed inside the vial adapter 100 can be adjusted. In the case of Figure 3, the protruding portion 34 is installed in the vertical direction, allowing injection needles of different specifications to be easily attached and detached and fixed in place.

[0016] Figure 4 is a schematic bottom view illustrating the vial adapter 100 of the present invention as viewed from the bottom. As shown in Figure 4, a needle insertion hole 24 can be seen in the center. In addition, multiple protrusions 16 for detachably fixing the vial can be seen on the inner surface of the cylindrical part 14 for housing the vial inside the vial fixing part 10. Increasing the number of protrusions 16 increases the contact area between the vial adapter 100 and the vial, thereby increasing the frictional force. Conversely, decreasing the number of protrusions reduces the contact area between the vial adapter 100 and the vial, thus decreasing the frictional force. In this way, by increasing or decreasing the shape and number of protrusions 16, the degree to which the vial is attached to and detached from the vial fixed inside the vial adapter 100 can be adjusted.

[0017] Figure 5 is a schematic diagram illustrating how a syringe is installed in the vial adapter 100 of the present invention. As illustrated in Figure 5, a syringe equipped with a needle 200 and a needle fixing part 210 can be attached to the vial adapter 100. For the sake of clarity, the syringe itself is not shown in the diagram.

[0018] When the injection needle fixing part 210 is inserted into the injection needle receiving part 30 located at the top of the vial adapter 100, it comes into contact with the protrusion 34 installed on the inner surface of the injection needle receiving part 30, and the injection needle fixing part 210 can be attached to and detached from the injection needle receiving part 30 by frictional force.

[0019] Furthermore, since a needle insertion hole 24 is provided that penetrates vertically through the ceiling portion 22 of the upper vial receiving portion 20 inside the vial adapter 100, the injection needle 200 can be inserted through this needle insertion hole 24 to the lower side of the vial adapter 100.

[0020] Even if the injection needle 200 that can be placed in the injection needle receiving section 30 is changed to an injection needle of a different thickness, the injection needle can still be placed in the vial adapter 100 without any problems. For this reason, the vial adapter of the present invention has a wide range of applications.

[0021] Next, vial 300 is placed into vial adapter 100. The vial 300 contains drug solution 310. An annular fixing member 320 is installed on the top of the vial 300. A flexible member 330 made of synthetic rubber or the like, called a septum, is installed on the upper surface of this annular fixing member 320.

[0022] When the vial adapter 100 is installed on the vial 300, the injection needle 200 passes through the flexible member 330 of the vial 300, and the drug solution 310 inside the vial 300 can be delivered to the syringe through the injection needle 200.

[0023] Furthermore, since the vial 300 has multiple protrusions 16 installed on the inner surface of the cylindrical portion 14 for storing the vial, which is located inside the vial fixing portion 10 of the vial adapter 100, these multiple protrusions 16 come into contact with the outer surface of the vial 300, thereby fixing the vial 300 to the vial adapter 100.

[0024] In the case of the vial adapter 100 of the present invention, since the vial adapter 100 can be installed on the vial 300 along the outer surface of the vial 300, the injection needle 200 penetrates perpendicularly to the flexible member 330 of the vial 300, thus preventing diagonal force from being applied to the injection needle 200 and preventing coring.

[0025] Furthermore, in the case of the vial adapter 100 of the present invention, since the injection needle 200 can be freely replaced, there is no need to insert an insertion member with an outer diameter greater than or equal to the injection needle 200 into the flexible member 330 of the vial 300, and leakage of the drug solution 310 from the vial 300 can be prevented.

[0026] The drug solution 310, drawn up from vial 300 using a syringe, can be easily transferred to another vial by replacing vial 300 with another vial. Furthermore, the drug solution 310 drawn up with a syringe can be easily injected into the patient after removing the vial adapter 100 of the present invention. Thus, the vial adapter 100 according to the present invention offers excellent operability. [Industrial applicability]

[0027] The vial adapter according to the present invention has a simple structure, making it suitable for mass production. Therefore, it can be widely applied in fields where the use of syringes is required, such as in the medical and research fields. [Explanation of symbols]

[0028] 10 Vial fixing part 12 Top part 14 Cylindrical part 16 Protrusion 20 vial upper receiving section 22 Ceiling section 24 Hole for needle insertion 26 Cylindrical section for vial storage 30 Syringe needle receiving part 32 Cylindrical section for storing injection needles 34 Protrusion 100 vial adapters 200 needles 210 Syringe needle fixing part 300 vials 310 Chemical Solution 320 Annular fixing member 330 Flexible member

Claims

[Claim 1] It has a vial fixing section, a vial upper receiving section, and an injection needle receiving section. The vial fixing part has a cylindrical part and an upper part for housing the vial inside, and the inner surface of the cylindrical part has a plurality of protrusions for detachably fixing the vial. The upper vial receiving section has a cylindrical part for storing vials and a ceiling part for storing the upper end of the vial inside. The injection needle receiving section has a cylindrical portion for storing the injection needle and the injection needle fixing portion inside, and a plurality of protrusions on the inner surface of the cylindrical portion for storing the injection needle for detachably fixing the injection needle fixing portion. A vial adapter characterized by having a hole for inserting an injection needle in the ceiling portion of the upper vial receiving portion, which forms the interface between the upper vial receiving portion and the injection needle receiving portion.

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