CN114727907A - Connection device - Google Patents

Abstract

The invention provides a connector capable of preventing each syringe and each container from being connected by mistake. A connector (100) is provided with: a syringe-side mount (110) to which a first syringe (210) and a second syringe (220) are connected; a container-side mounting member (120) to which the first container (310) and the second container (320) are connected and which can be connected to the syringe-side mounting member; and a restricting section (150) that restricts, when the syringe-side attachment is connected to the container-side attachment, insertion of the syringe-side attachment into the receiving section of the container-side attachment in a state in which the first syringe connecting section of the syringe-side attachment is displaced with respect to the first needle holding section of the container-side attachment and the second syringe connecting section of the syringe-side attachment is displaced with respect to the second needle holding section of the container-side attachment.

Description

Connecting device

Technical Field

The present invention relates to a connector for connecting a plurality of syringes to a plurality of containers.

Background

A medical applicator used when a coating material such as an anti-adhesion material or a biological tissue adhesive is administered into the body of a patient is known (for example, see patent document 1).

When using the applicator, an operator such as a doctor injects a predetermined amount of a liquid such as a dissolving liquid into a container (vial) storing a drug, mixes the drug and the liquid in the container, and stirs the mixture to dissolve or dilute the drug. In the case of using a coating material composed of two or more kinds of drugs, two or more containers storing different drugs are prepared.

Patent document 1: japanese patent laid-open publication No. 2009-226189

The operator may use a syringe when injecting a liquid into the container. When two or more kinds of drugs are used, the operator injects a liquid into each of the two or more containers. In general, the concentration of the diluted chemical used for the coating material varies depending on the type. Therefore, the operator prepares a plurality of syringes having different volumes and connects the syringes to the containers. The connection between the syringe and the container can be performed using, for example, a syringe-side attachment for connecting the syringes and a container-side attachment for connecting the containers. After confirming the arrangement of each syringe and each container so that each syringe and each container are appropriately combined and connected, the operator connects the syringe-side mounting device and the container-side mounting device.

However, when the operator connects the syringe-side attachment device and the container-side attachment device, the operator may not easily recognize an appropriate combination of each syringe and each container by visual observation. When the operator connects each syringe and each container in combination with each other by mistake, a predetermined drug effect may not be obtained.

Disclosure of Invention

The present invention has been made in view of the above problems, and an object thereof is to provide a connector capable of preventing erroneous connection between each syringe and each container.

The connector of the present invention comprises: a syringe-side attachment, comprising: a first syringe connecting section to which a first syringe of a prefill type filled with a predetermined liquid is connected, and a second syringe connecting section to which a second syringe of a prefill type filled with a predetermined liquid is connected; and a container-side attachment member to which a first container holding a predetermined medicine and allowing the liquid contained in the first syringe to flow in and a second container holding a predetermined medicine and allowing the liquid contained in the second syringe to flow in are connected, and which is connectable to the syringe-side attachment member, the container-side attachment member including: a first needle holding unit that holds a first double-ended needle, the first double-ended needle including: a first needle portion projecting toward the first container side, and a second needle portion projecting toward a side opposite to a projecting direction of the first needle portion; a second needle holding unit that holds a second double-ended needle, the second double-ended needle including: a first needle portion projecting toward the second container side, and a second needle portion projecting toward a side opposite to a projecting direction of the first needle portion; a housing portion that houses the first needle holding portion and the second needle holding portion; and an opening portion through which the syringe-side attachment can be inserted into the housing portion, wherein the connector has a restriction portion that restricts insertion of the syringe-side attachment into the housing portion in a state where the first syringe connecting portion is displaced with respect to the first needle holding portion and the second syringe connecting portion is displaced with respect to the second needle holding portion when the syringe-side attachment is connected to the container-side attachment.

According to the connector of the present invention, when the syringe-side attachment device and the container-side attachment device are connected, if the combination of each syringe and each container is inappropriate, the connection between the syringe-side attachment device and the container-side attachment device is restricted by the restricting portion. Therefore, erroneous connection of each syringe to each container can be prevented.

Drawings

Fig. 1 is a perspective view showing a connector according to an embodiment.

Fig. 2 is a partial cross-sectional view of the container-side mount taken along the line of arrows 2A-2A of fig. 1.

Fig. 3 is a perspective view of the container-side mount.

Fig. 4 is a top view of the container-side mount.

Fig. 5 is a perspective view of the syringe-side mount.

Fig. 6 is a top view of the syringe-side mount.

Fig. 7 is a perspective view showing a state when the syringe-side mounting device is connected to the container-side mounting device.

Fig. 8 is a plan view showing a state when the syringe-side attachment device and the container-side attachment device are connected.

Fig. 9 is a perspective view for explaining the function of the regulating unit.

Fig. 10 is a plan view for explaining the function of the regulating section.

Fig. 11 is a plan view for explaining the function of the regulating portion.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The following description does not limit the scope of the technology described in the claims, nor the meaning of the terms. For convenience of explanation, the dimensional ratios in the drawings are exaggerated and different from the actual ratios.

Fig. 1 to 6 are views showing the connector 100 (syringe-side attachment 110 and container-side attachment 120) according to the present embodiment, and fig. 7 to 11 are views for explaining the function of the regulating section 150. In the drawings shown in fig. 7 to 11, the syringes 210 and 220 and the containers 310 and 320 are not shown.

As shown in fig. 1, the connector 100 of the present embodiment includes a syringe-side fixture 110 and a container-side fixture 120. When the syringe-side fixture 110 and the container-side fixture 120 are connected to each other, the connector 100 includes a restricting portion 150 for assisting the connecting operation so that the syringe-side fixture 110 and the container-side fixture 120 are connected in an appropriate positional relationship.

When using a coating tool (sprayer) for applying a coating material such as an adhesion preventing material or a living tissue adhesive material, the connector 100 can be used to connect the syringes 210 and 220 to the containers 310 and 320 in order to supply liquid to the containers 310 and 320. The specific use of the connector 100 is not limited to the coating tool, and may be applied to other medical devices.

As shown in fig. 1, a first syringe 210 holding a predetermined liquid and a second syringe 220 holding a predetermined liquid can be connected to the syringe-side attachment 110.

The first syringe 210 includes a cylindrical body 211 for holding a liquid such as a dissolving solution. A part of the pressing head 213 is inserted into the cylinder 211. The first syringe 210 is advanced inside the cylinder 211 by the pressing head 213, and thereby liquid is discharged from a distal end opening (not shown) provided at the distal end of the first syringe 210. The first syringe 210 is a prefilled syringe filled with a predetermined liquid in advance. A sealing member (not shown) for preventing liquid leakage may be disposed at the distal end opening of the first syringe 210.

The second syringe 220 includes a cylinder 221 for holding a liquid such as a solution. A part of the pressing head 223 is inserted into the cylinder 221. The second syringe 220 is advanced inside the cylinder 221 by the pressing head 223, and thereby liquid is discharged from a distal end opening provided at the distal end of the second syringe 220. Like the first syringe 210, the second syringe 220 is a prefilled syringe filled with a predetermined liquid in advance. A sealing member (not shown) for preventing liquid leakage may be disposed at a distal end opening (not shown) of the second syringe 220.

The type of liquid held by each syringe 210, 220 is not particularly limited, but is, for example, distilled water.

The volume of the barrel 211 of the first syringe 210 is greater than the volume of the barrel 221 of the second syringe 220. In the present embodiment, the liquid discharged from the first syringe 210 is injected into the first container 310. On the other hand, the liquid discharged from the second syringe 220 is injected into the interior of the second container 320.

When the first syringe 210 and the second syringe 220 are prepared as prefilled syringes, the syringe-side fixture 110 can be accommodated in a predetermined packaging material (not shown) together with the syringes 210 and 220 in a state of being connected to the syringes 210 and 220 as shown in fig. 1. The syringe-side mount 110 may be provided in a state where the first syringe 210 and the second syringe 220 are not connected to each other before use.

For example, AC sterilization can be performed inside each of the syringes 210 and 220. Further, EB sterilization, EOG sterilization, AC sterilization, and the like may be performed on the outside of the syringe-side fixture 110 and the syringes 210 and 220. After sterilizing the syringes 210 and 220 and the syringe-side attachment device 110, the instruments can be stored in a packaging material.

When the operator starts injecting a liquid from each syringe 210, 220 into each container 310, 320, the operator takes out the syringe-side fixture 110 and each syringe 210, 220 from the packaging material and connects each syringe 210, 220 to the container-side fixture 120. When the syringe-side fixture 110 and the syringes 210 and 220 are housed in a connected state in the packaging material, the preparation for starting the operation using the application tool is simplified. The syringe-side attachment 110 and the syringes 210 and 220 may be fixed by an adhesive or the like.

As shown in fig. 1, the first container 310 holding a predetermined medicine and the second container 320 holding a predetermined medicine can be connected to each other by the container-side attachment 120.

The first container 310 is a vial that holds a medicament therein. As shown in fig. 2, the first container 310 includes: a container body 311 that contains a medicine, an opening 312 located at the upper end of the container body 311, and a sealing member 313 that seals the opening 312.

The second container 320 is a vial that holds therein a different kind of medicine from the medicine held in the first container 310. As shown in fig. 2, the second container 320 includes: a container body 321 for housing a medicine, an opening 322 located at the upper end of the container body 321, and a sealing member 323 for sealing the opening 322.

The type of the drug held in the first container 310 and the type of the drug held in the second container 320 are not particularly limited, but when a drug solution is used as the biological tissue adhesive, for example, thrombin can be used as the drug held in one container, and fibrinogen can be used as the drug held in the other container. In the case where the chemical solution is an anti-blocking material, the chemical held in one container can be carboxymethyl dextrin modified with a succinimide group, and the chemical held in the other container can be a mixture of sodium bicarbonate and sodium carbonate.

The form of the drug held by each container 310, 320 is not particularly limited, but examples thereof include solid (such as tablets, and particles of a powdery material), powder (such as powder), and liquid.

The inside of each of the containers 310 and 320 can be configured to maintain the negative pressure until the double-ended needles 130 and 140, which will be described later, penetrate the sealing members 313 and 323 disposed in the containers 310 and 320.

The containers 310 and 320 can be EB sterilized, for example.

Next, the syringe-side attachment member 110, the container-side attachment member 120, and the regulating portion 150 will be described in detail.

As shown in fig. 1, 5, and 6, the syringe-side attachment 110 includes: a first syringe connecting part 111 to which a first syringe 210 of a pre-filled type is connected, and a second syringe connecting part 112 to which a second syringe of a pre-filled type is connected.

As shown in fig. 5, the first syringe connecting portion 111 has a structure in which a slit is provided in a part of a cylindrical shape. The first syringe 210 can be connected to the syringe-side attachment 110 by inserting the tip end portion of the first syringe 210 into the first syringe connecting portion 111.

As shown in fig. 5, the second syringe connecting portion 112 has a structure in which a slit is provided in a part of a cylindrical shape. The second syringe 220 can be connected to the syringe-side attachment 110 by inserting the distal end portion of the second syringe 220 into the second syringe connecting portion 112. As described above, the volume of the first syringe 210 connected to the first syringe connecting part 111 is smaller than the volume of the second syringe 220 connected to the second syringe connecting part 112. Therefore, the inner circumference and the outer shape of the second syringe connecting portion 112 are formed smaller than those of the first syringe connecting portion 111.

An insertion guide portion 115 is provided between the first syringe connecting portion 111 and the second syringe connecting portion 112. The insertion guide portion 115 couples the first syringe connecting portion 111 and the second syringe connecting portion 112 in the width direction of the syringe-side attachment 110.

The insertion guide 115 is provided with coupling portions 111a and 112b on the other end side (lower end side) opposite to the one end side (upper end side) on which the syringe coupling portions 111 and 112 are disposed.

The first coupling portion 111a communicates with the first syringe coupling portion 111 via the inside of the insertion guide portion 115. The first connecting portion 111a is configured to be connectable to the first needle holding portion 121 (see fig. 2 and 7) of the container-side fixture 120. The second coupling portion 112b communicates with the second syringe connecting portion 112 via the inside of the insertion guide portion 115. The second coupling portion 112b is configured to be able to be coupled to the second needle holding portion 122 (see fig. 2 and 7) of the container-side attachment 120.

As shown in fig. 1 and 2, the container-side fixture 120 is configured to be able to connect a first container 310 into which the liquid stored in the first syringe 210 flows and a second container 320 into which the liquid stored in the second syringe 220 flows. The container-side attachment member 120 may be provided separately from the containers 310 and 320.

As shown in fig. 2, the container-side fixture 120 includes: a first needle holding portion 121, a second needle holding portion 122, a housing portion 123, and an opening portion 124.

The first needle holding portion 121 holds a hollow first double-ended needle 130 including a first needle portion 131 protruding toward the first container 310 (lower side in fig. 2) and a second needle portion 132 protruding toward the opposite side (upper side in fig. 2) to the protruding direction of the first needle portion 131.

The first double-ended needle 130 is configured such that the outer diameter of the first needle 131 is larger than the outer diameter of the second needle 132. Therefore, the resistance generated when the first needle 131 penetrates the member (in the present embodiment, the sealing member 313 of the first container 310) is larger than the resistance generated when the second needle 132 penetrates the member (in the present embodiment, the sealing member that seals the distal end opening of the first syringe 210).

The second needle holding portion 122 holds a hollow second double-ended needle 140 including a first needle 141 protruding toward the second container 320 (lower side in fig. 2) and a second needle 142 protruding toward the opposite side (upper side in fig. 2) to the protruding direction of the first needle 141.

The second double-ended needle 140 is configured such that the outer diameter of the first needle 141 is larger than the outer diameter of the second needle 142, as in the first double-ended needle 130. Therefore, the resistance generated when the first needle 141 penetrates the member (in the present embodiment, the sealing member 323 of the second container 320) is larger than the resistance generated when the second needle 142 penetrates the member (in the present embodiment, the sealing member that seals the distal end opening of the second syringe 220).

As shown in fig. 2, the housing portion 123 houses the first needle holding portion 121 and the second needle holding portion 122 together with the double-ended needles 130 and 140.

The opening 124 allows the syringe-side attachment 110 to be inserted into the receiving portion 123 (operation indicated by arrow D in fig. 7). The operator can couple the first coupling portion 111a (see fig. 5) to the first needle holding portion 121 and can couple the second coupling portion 112b (see fig. 5) to the second needle holding portion 122 by housing the syringe-side attachment 110 in the housing portion 123. The syringe-side attachment 110 and the container-side attachment 120 can be connected by coupling the needle holding portions 121 and 122 and the coupling portions 111a and 112b to each other.

Further, by connecting the syringe-side fixture 110 to the container-side fixture 120 as described above, the first double-ended needle 130 held by the first needle holding portion 121 of the container-side fixture 120 can penetrate the seal member of the first syringe 210 and the seal member 313 of the first container 310. The interior of the first syringe 210 and the interior of the first container 310 communicate via the lumen of the first double-ended needle 130. Similarly, the operator connects the syringe-side fixture 110 to the vessel-side fixture 120, and can thereby pass through the seal member of the second syringe 220 and the seal member 323 of the second vessel 320 via the second double-ended needle 140 held by the second needle holding portion 122 of the vessel-side fixture 120. The interior of the second syringe 220 and the interior of the second container 320 communicate via the lumen of the second double-ended needle 140.

When the syringe-side attachment 110 is connected to the container-side attachment 120, the regulating portion 150 regulates the insertion of the syringe-side attachment 110 into the receiving portion 123 in a state where the first syringe connecting portion 111 is displaced from the first needle holding portion 121 and the second syringe connecting portion 112 is displaced from the second needle holding portion 122.

The above-described "state in which the first syringe connecting section 111 is displaced from the first needle holder 121 and the second syringe connecting section 112 is displaced from the second needle holder 122" means: for example, as shown in fig. 9 and 10, when the syringe-side fixture 110 is connected to the container-side fixture 120, the second syringe connecting portion 112 is disposed on the first needle holding portion 121 side, and the first syringe connecting portion 111 is disposed on the second needle holding portion 122 side. More specifically, the state refers to a state in which the inside of the first container 310 and the inside of the second syringe 220 communicate with each other through the first double-ended needle 130 and a state in which the inside of the second container 320 and the inside of the first syringe 210 communicate with each other through the second double-ended needle 140 when the syringe-side mounting device 110 is connected to the container-side mounting device 120.

As shown in fig. 1 and 7, the restricting portion 150 includes an outer frame 125 forming the outer shape of the receiving portion 123 of the container-side mounting device 120, and an insertion guide 115 provided in the syringe-side mounting device 110 and forming an outer shape similar to the outer shape of the outer frame 125.

As shown in fig. 9 and 10, when the syringe-side mounting element 110 is connected to the container-side mounting element 120, the restriction portion 150 configured as described above is in a state in which the first syringe connecting portion 111 is displaced from the first needle holding portion 121 and the second syringe connecting portion 112 is displaced from the second needle holding portion 122, and thereby the insertion guide portion 115 is brought into contact with the outer frame portion 125, thereby restricting the insertion of the syringe-side mounting element 110 into the receiving portion 123. The operator can easily grasp that the syringe-side attachment 110 is in an inappropriate position or posture relative to the vessel-side attachment 120 by restricting the insertion of the syringe-side attachment 110 into the receiving portion 123 by physical contact between the insertion guide 115 and the outer frame 125.

As shown in fig. 2, 3, and 4, the outer frame 125 of the vessel-side mounting member 120 has a first portion 125a surrounding the first needle holding portion 121 and has a larger outer shape than a second portion 125b surrounding the second needle holding portion 122. As shown in fig. 5 and 6, the insertion guide portion 115 of the syringe-side attachment 110 has a third portion 115a located in the peripheral portion of the first syringe connecting portion 111 and a fourth portion 115b located in the peripheral portion of the second syringe connecting portion 112, which have a larger outer shape.

As shown in fig. 7, when the syringe-side attachment device 110 and the container-side attachment device 120 are connected, the third section 115a of the insertion guide portion is disposed on the first section 125a side of the outer frame 125. The fourth portion 115b of the insertion guide is disposed on the second portion 125b side of the outer frame 125. In this way, the insertion guide 115 can be properly inserted into the receiving portion 123 by aligning the first portion 125a and the third portion 115a having the large outer shapes with each other and aligning the second portion 125b and the fourth portion 115b having the small outer shapes with each other. On the other hand, in a state where the first portion 125a having a large outer shape and the fourth portion 115b having a small outer shape are aligned with each other and the second portion 125b having a small outer shape and the third portion 115a having a large outer shape are aligned with each other, the insertion of the insertion guide 115 into the receiving portion 123 is restricted because the insertion guide 115 abuts on the outer peripheral edge of the outer frame portion 125 (see fig. 9). Therefore, the syringe-side attachment 110 and the container-side attachment 120 can be prevented from being erroneously connected.

In the present embodiment, the first section 125a of the outer frame 125 and the second section 125b of the outer frame 125 are formed with an outer shape that is convexly curved outward (see fig. 3). The third portion 115a of the insertion guide 115 and the fourth portion 115b of the insertion guide 115 are formed in an outer shape that is substantially similar to the first portion 125a and the second portion 125b, i.e., is convexly curved outward. However, the outer shape of each of the portions 125a and 125b of the outer frame portion 125 and each of the portions 115a and 115b of the insertion guide 115 is not particularly limited as long as the insertion guide 115 is inserted into the receiving portion 123 when the syringe-side mounting element 110 and the container-side mounting element 120 are connected in a properly aligned state.

The restricting portion 150 includes: a convex portion 127 (see fig. 3 and 4) formed on the inner peripheral surface 126 of the second portion 125b of the outer frame 125 of the container-side attachment member 120, and a concave portion 117 (see fig. 5 and 6) formed on the outer peripheral surface 116 of the fourth portion 115b of the insertion guide portion 115 of the syringe-side attachment member 110 and into which the convex portion 127 can be inserted.

When the syringe-side attachment 110 and the container-side attachment 120 are connected to each other, as shown in fig. 7 and 8, if the convex portion 127 formed in the outer frame 125 of the container-side attachment 120 and the concave portion 117 formed in the insertion guide portion 115 of the syringe-side attachment 110 are aligned with each other, the syringe-side attachment 110 can be moved in a direction approaching the container-side attachment 120 in a state where the convex portion 127 is inserted into the concave portion 117.

On the other hand, when the syringe-side attachment 110 and the container-side attachment 120 are connected, as shown in fig. 9 and 10, in a state where the convex portion 127 formed in the outer frame portion 125 of the container-side attachment 120 and the concave portion 117 formed in the insertion guide portion 115 of the syringe-side attachment 110 are not appropriately aligned, that is, in a state where the first portion 125a of the outer frame portion 125 and the fourth portion 115b of the insertion guide portion 115 are aligned and the second portion 125b of the outer frame portion 125 and the third portion 115a of the insertion guide portion 115 are aligned, the convex portion 127 and the concave portion 117 are misaligned, and therefore the convex portion 127 and the lower end surface of the insertion guide portion 115 are brought into contact with each other. Therefore, the insertion of the insertion guide 115 into the receiving portion 123 is restricted.

Since the restricting portion 150 has the convex portion 127 and the concave portion 117, the following effects are further achieved.

In the case where the syringe-side attachment 110 and the container-side attachment 120 are made of an elastically deformable resin material or the like, when a force is applied to the insertion guide 115 and the outer frame 125 when the syringe-side attachment 110 and the container-side attachment 120 are connected, the insertion guide 115 may be forcibly pushed into the accommodating portion 123 even though the outer frame 125 abuts against the insertion guide 115. In this case, although the restriction by the restricting portion 150 is performed, the syringe-side attachment 110 and the container-side attachment 120 are erroneously connected. Since the restricting portion 150 of the present embodiment has the convex portion 127 and the concave portion 117, the inner side of the outer frame portion 125 on the second portion 125b side (for example, the inner diameter in the case where the outer shape is circular) is locally narrowed. Therefore, in a state where the third section 115a of the insertion guide 115 is disposed on the second section 125b side of the outer frame 125 (see fig. 9), the insertion guide 115 cannot be easily pushed into the receiving portion 123. As described above, if the convex portion 127 and the concave portion 117 are not aligned, the syringe-side attachment 110 cannot be moved in the direction approaching the container-side attachment 120. Therefore, as shown in fig. 11, even when a part of the syringe-side attachment 110 is tilted or deformed, the insertion guide 115 cannot be inserted into the housing portion 123. Therefore, the stopper 150 can more effectively prevent the syringe-side attachment 110 and the container-side attachment 120 from being erroneously connected.

The plurality of convex portions 127 are provided at different positions in the circumferential direction of the inner circumferential surface 126 of the second portion 125b of the outer frame portion 125. In addition, the plurality of concave portions 117 are provided at different positions in the circumferential direction of the outer circumferential surface 116 of the fourth portion 115b of the insertion guide portion 115. The number of convex portions 127 is the same as the number of concave portions 117. The number, cross-sectional shape, and the like of concave portions 117 and convex portions 127 are not particularly limited. For example, a concave portion may be provided on the inner peripheral surface 126 of the second section 125b of the outer frame 125, a convex portion may be provided on the outer peripheral surface 116 of the fourth section 115b of the insertion guide 115 of the syringe-side mounting device 110, or a concave portion and a convex portion may be provided on each of the surfaces 126 and 116.

The syringe-side fixture 110 and the container-side fixture 120 are not particularly limited in their structural material, but for example, resin materials such as polypropylene, polyethylene terephthalate, polymethyl methacrylate, polycarbonate, and ultraviolet-curable resin, glass, ceramics, and the like can be used. The vessel-side mount 120 includes a first double-ended needle 130 and a second double-ended needle 140, and can perform sterilization by EB sterilization, EOG sterilization, AO sterilization, or the like, for example.

When the syringe-side mounting device 110 is inserted into the receiving portion 123 and the container-side mounting device 120 and the syringe-side mounting device 110 are connected in a state where the first syringe connecting portion 111 is aligned with the first needle holding portion 121 and the second syringe connecting portion 112 is aligned with the second needle holding portion 122 via the regulating portion 150, the first double-ended needle 130 and the second double-ended needle 140 arranged in the container-side mounting device 120 penetrate the sealing member of the first syringe 210 and the sealing member of the second syringe 220 through the second needle portions 132 and 142, respectively. After the double-ended needles 130 and 140 penetrate the sealing members of the syringes 210 and 220, the first needles 131 and 141 penetrate the sealing member 313 provided in the first container 310 and the sealing member 323 provided in the second container 320.

As described above, the first needle portion 131 of the first double-ended needle 130 is configured to have a larger outer diameter than the second needle portion 132. Therefore, the resistance generated when the first needle 131 penetrates the seal member 313 of the first container 310 is larger than the resistance generated when the second needle 132 penetrates the seal member of the distal end opening of the first syringe 210. The first needle portion 141 of the second double-ended needle 140 is formed to have a larger outer diameter than the second needle portion 142. Therefore, the resistance generated when the first needle 141 penetrates the sealing member 313 of the first container 310 is larger than the resistance generated when the second needle 142 penetrates the sealing member of the distal end opening of the second syringe 220.

Therefore, in order to connect the syringe-side attachment 110 to which the first syringe 210 and the second syringe 220 are connected to the receptacle-side attachment 120, when the syringe-side attachment 110 and the receptacle-side attachment 120 are brought into relatively close proximity, the second needle portion 132 of the first double-ended needle 130 penetrates the seal member of the first syringe 210, and the second needle portion 142 of the second double-ended needle 140 penetrates the seal member of the second syringe 220. When the operator relatively approaches the syringe-side mounting element 110 to the vessel-side mounting element 120, the first needle portion 131 of the first double-ended needle 130 penetrates the seal member 313 of the first vessel 310, and the first needle portion 141 of the second double-ended needle 140 penetrates the seal member 323 of the second vessel 320. Thus, the inside of the first syringe 210 and the inside of the first container 310 communicate with each other via the first double-ended needle 130, and the inside of the second syringe 220 and the inside of the second container 320 communicate with each other via the second double-ended needle 140.

In the present embodiment, the inside of each container 310, 320 is maintained at a negative pressure in a state before each double-ended needle 130, 140 penetrates the seal members 313, 323 of each container 310, 320. Therefore, when the inside of the first syringe 210 and the inside of the first container 310 communicate with each other via the first double-ended needle 130, the liquid held in the inside of the first syringe 210 moves into the inside of the first container 310. Similarly, when the inside of the second syringe 220 and the inside of the second container 320 communicate with each other via the second double-ended needle 140, the liquid held in the inside of the second syringe 220 moves into the inside of the second container 320.

After injecting a predetermined amount of liquid into the vessels 310 and 320, the operator removes the syringe-side fixture 110 and the vessel-side fixture 120 from the vessels 310 and 320 and the syringes 210 and 220. The operator stirs the containers 310 and 320 separated from the syringes 210 and 220 to dissolve or dilute the medicines held in the containers 310 and 320. After dissolving and diluting the drug held in each container 310, 320, the operator can connect each container 310, 320 to the application tool (not shown) using a predetermined fitting or the like.

As described above, the connector 100 of the present embodiment includes: a syringe-side fixture 110 including a first syringe connecting portion 111 to which a first syringe 210 of a prefill type filled with a predetermined liquid is connected, and a second syringe connecting portion 112 to which a second syringe 220 of a prefill type filled with a predetermined liquid is connected; and a container-side mounting member 120 to which a first container 310 for holding a predetermined medicine and allowing the liquid contained in the first syringe 210 to flow in and a second container 320 for holding a predetermined medicine and allowing the liquid contained in the second syringe 220 to flow in are connected and which is connectable to the syringe-side mounting member 110. The container-side mount 120 includes: a first needle holding portion 121 that holds a first double-ended needle 130, the first double-ended needle 130 including: a first needle 131 protruding to the first container 310 side, and a second needle 132 protruding to the opposite side of the protruding direction of the first needle 131; a second needle holding portion 122 for holding a second double-ended needle 140, the second double-ended needle 140 including a first needle portion 141 protruding toward the second container 320 side and a second needle portion 142 protruding toward the side opposite to the protruding direction of the first needle portion 141; a housing portion 123 that houses the first needle holding portion 121 and the second needle holding portion 122; and an opening 124 through which the syringe-side attachment 110 can be inserted into the housing portion 123. The connector 100 further includes a regulating portion 150, and when the syringe-side attachment 110 is connected to the container-side attachment 120, the regulating portion 150 regulates the insertion of the syringe-side attachment 110 into the receiving portion 123 in a state where the first syringe connecting portion 111 is displaced with respect to the first needle holding portion 121 and the second syringe connecting portion 112 is displaced with respect to the second needle holding portion 122.

According to the connector 100 configured as described above, the syringes 210 and 220 and the containers 310 and 320 can be prevented from being erroneously connected. Further, when the syringe-side attachment 110 and the container-side attachment 120 are connected to each other, if the syringe-side attachment 110 and the container-side attachment 120 are not in an appropriate positional relationship, the syringe-side attachment 110 can be prevented from being inserted into the receiving portion 123 of the container-side attachment 120 holding the double-ended needles 130 and 140. Therefore, the sealing members of the syringes 210 and 220 connected to the syringe-side attachment device 110 can be prevented from being erroneously inserted by the double-ended needles 130 and 140.

Further, the restricting unit 150 includes: an outer frame 125 forming the outer shape of the receiving portion 123 of the container side attachment 120; and an insertion guide 115 provided in the syringe-side attachment 110 and having an outer shape similar to the outer shape of the outer frame 125. When the syringe-side mounting element 110 and the container-side mounting element 120 are connected, the regulating portion 150 regulates the insertion of the syringe-side mounting element 110 into the receiving portion 123 by bringing the insertion guide portion 115 into contact with the outer frame portion 125 in a state where the first syringe connecting portion 111 is displaced with respect to the first needle holding portion 121 and the second syringe connecting portion 112 is displaced with respect to the second needle holding portion 122. According to the connector 100 configured as described above, when the syringe-side mounting element 110 and the container-side mounting element 120 are connected and the two are not in an appropriate positional relationship, the insertion guide 115 comes into contact with the outer frame 125, whereby erroneous connection between the two can be more reliably prevented. Further, since the regulating portion 150 is constituted by a part of the syringe-side attachment 110 and a part of the container-side attachment 120, the number of components can be reduced and the manufacturing cost can be reduced as compared with the case where the regulating portion 150 is constituted by another component.

In addition, the outer frame portion 125 is formed such that the outer shape of the first portion 125a surrounding the first needle holding portion 121 is larger than the outer shape of the second portion 125b surrounding the second needle holding portion 122. The insertion guide part 115 is formed such that the outer shape of the third portion 115a located at the peripheral portion of the first syringe connecting part 111 is larger than the outer shape of the fourth portion 115b located at the peripheral portion of the second syringe connecting part 112. Therefore, when the first section 125a and the second section 125b of the outer frame 125 are not properly positioned with respect to the third section 115a and the fourth section 115b of the insertion guide 115 when the syringe-side attachment 110 and the container-side attachment 120 are connected, the stopper 150 can more reliably prevent the syringe-side attachment 110 and the container-side attachment 120 from being erroneously connected.

Further, the restricting portion 150 includes: a convex portion 127 formed on the inner peripheral surface of the second portion 125b of the outer frame portion 125; and a recess 117 formed on the outer circumferential surface 116 of the fourth portion 115b of the insertion guide 115 and into which the protrusion 127 can be inserted. Therefore, in the connector 100, even when a part of the syringe-side attachment 110 is tilted or deformed when the syringe-side attachment 110 and the container-side attachment 120 are not in an appropriate positional relationship, the insertion guide 115 cannot be inserted into the receiving portion 123. Therefore, the connector 100 can effectively prevent the syringe-side attachment 110 and the container-side attachment 120 from being erroneously connected.

In addition, when the syringe-side mounting element 110 is inserted into the accommodating portion 123 and the container-side mounting element 120 and the syringe-side mounting element 110 are connected in a state where the first syringe connecting portion 111 is aligned with the first needle holding portion 121 and the second syringe connecting portion 112 is aligned with the second needle holding portion 122 by the regulating portion 150, the first double-ended needle 130 and the second double-ended needle 140 are each penetrated by the sealing member provided in the first syringe 210 and the sealing member provided in the second syringe 220 through each of the second needle portions 132 and 142, and after the penetration, the sealing member 313 provided in the first container 310 and the sealing member 323 provided in the second container 320 are penetrated through each of the first needle portions 131 and 132. According to the connector 100 configured as described above, the syringe-side mounting tool 110 and the container-side mounting tool 120 are connected in an appropriate positional relationship, and thus the seal members of the syringes 210 and 220 can be penetrated by the double-ended needles 130 and 140, and then the seal members 313 and 323 of the containers 310 and 320 can be penetrated by the double-ended needles 130 and 140.

Although the connector of the present invention has been described above with reference to the embodiments, the present invention is not limited to the description of the embodiments, and can be appropriately modified based on the description of the technical means.

In the embodiment, the connection tool configured to be able to connect two syringes to two containers has been described, but the connection tool may be configured to connect at least two or more containers and two or more syringes. Therefore, the connecting tool may be configured to connect three or more containers and three or more syringes. In the case where the connector is configured to be able to connect three or more containers and three or more syringes, the regulating unit may be configured to regulate the operation of each unit at the time of connection so that the three or more containers and the three or more syringes can be appropriately connected.

The specific structure of the connector is not particularly limited as long as the syringe-side attachment device and the container-side attachment device can be prevented from being erroneously connected by the restricting portion. Therefore, the shapes of the parts of the connection tool (syringe-side attachment tool and container-side attachment tool) are not limited to the shapes described in the drawings. For example, the restricting portion may be formed of a separate member from the syringe-side attachment member and the container-side attachment member. Further, the structure, the specification, and the like of each syringe and each container are not particularly limited.

The present application is based on Japanese patent application No. 2020-035333, filed 3/2/2020, the disclosure of which is incorporated by reference in its entirety.

Description of the reference numerals

100 … connecting the appliances; 110 … syringe side mounting; 111 … first syringe connection; 111a … first connecting part; 112 … second syringe connection; 112b … second joint; 115 … insertion guide; 115a … third part; 115b … fourth part; 116 … outer peripheral surface; a 117 … recess; 120 … container side mounts; 121 … a first needle holding portion; 122 … a second needle holding portion; 123 … accommodating part; 124 … opening part; 125 … outer frame portion; 125a … first part; 125b … second part; 126 … inner peripheral surface; 127 … protrusions; 130 … a first double-ended needle; 131 … a first needle portion; 132 … a second needle portion; 140 … second double-ended needle; 141 … a first needle portion; 142 … second needle portion; 150 … restriction; 210 … a first syringe; 220 … second syringe; 310 … a first container; 313 … sealing member; 320 … a second container; 323 … seal the components.

Claims (5)

1. An attachment device, comprising:

a syringe-side attachment device provided with: a first syringe connecting section to which a first syringe of a prefill type filled with a predetermined liquid is connected, and a second syringe connecting section to which a second syringe of a prefill type filled with a predetermined liquid is connected; and

a container-side attachment member to which a first container holding a predetermined medicine and allowing the liquid contained in the first syringe to flow in and a second container holding a predetermined medicine and allowing the liquid contained in the second syringe to flow in are connected and which is connectable to the syringe-side attachment member,

the container-side mounting member has: a first needle holding unit that holds a first double-ended needle, the first double-ended needle including: a first needle portion protruding toward the first container side, and a second needle portion protruding toward a side opposite to a protruding direction of the first needle portion; a second needle holding unit that holds a second double-ended needle, the second double-ended needle including: a first needle portion projecting toward the second container side, and a second needle portion projecting toward a side opposite to a projecting direction of the first needle portion; a housing portion that houses the first needle holding portion and the second needle holding portion; and an opening portion capable of inserting the syringe-side attachment into the housing portion,

the connector includes a regulating portion that regulates insertion of the syringe-side attachment into the accommodating portion in a state where the first syringe connecting portion is displaced with respect to the first needle holding portion and the second syringe connecting portion is displaced with respect to the second needle holding portion when the syringe-side attachment is connected to the container-side attachment.

2. Connection means according to claim 1,

the restricting portion has: an outer frame portion forming an outer shape of the housing portion of the container-side attachment member, and an insertion guide portion provided to the syringe-side attachment member and forming an outer shape similar to the outer shape of the outer frame portion,

when the syringe-side attachment is connected to the container-side attachment, the restriction portion causes the insertion guide portion to abut against the outer frame portion in a state where the first syringe connecting portion is displaced from the first needle holding portion and the second syringe connecting portion is displaced from the second needle holding portion, thereby restricting insertion of the syringe-side attachment into the receiving portion.

3. Connection means according to claim 2,

the outer frame portion is formed by: an outer shape of a first portion surrounding a circumference of the first needle holding portion is larger than an outer shape of a second portion surrounding a circumference of the second needle holding portion,

the insertion guide portion is formed such that: the outer shape of the third portion of the peripheral portion of the first syringe connecting portion is larger than the outer shape of the fourth portion of the peripheral portion of the second syringe connecting portion.

4. Connection means according to claim 3,

the restricting portion has: a convex portion formed on an inner peripheral surface of the second portion of the outer frame portion; and a concave portion formed on an outer circumferential surface of the fourth portion of the insertion guide portion and into which the convex portion can be inserted.

5. The connecting device according to any one of claims 1 to 4,

in the first double-ended needle and the second double-ended needle, when the syringe-side attachment is inserted into the receiving portion and the container-side attachment is connected to the syringe-side attachment in a state where the first syringe connecting portion is aligned with the first needle holding portion via the regulating portion and the second syringe connecting portion is aligned with the second needle holding portion, the seal member provided in the first syringe and the seal member provided in the second syringe are penetrated by the second needle portions, and after the penetration, the seal member provided in the first container and the seal member provided in the second container are penetrated by the first needle portions.

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