Operating lever, syringe connector and connector

Abstract

An operating lever (160) is disposed within a hole (131) formed in the outer body (110) of a syringe connector (100) and engages with a locking portion (78) of a container connector (20) inserted into the syringe connector (100). It comprises: a pair of pillars (163a) arranged side-by-side in one direction, one end of which is integrally formed with the outer body (110); and a claw member (161a) including: a first claw portion (161a1) inclined in one direction toward the outside of the outer body (110), and a second claw portion (161a2) integrally formed with the first claw portion (161a1) and formed along one direction; and an operating head (16... 1b) is integrally formed at the end of the first claw portion (161a1) and located on the outer side of the outer body (110) at that end; and locking claw (162) is integrally formed at the end of the second claw portion (161a2) and located on the inner side of the outer body (110) at that end, and can engage with the engaging portion (78); and a pair of support portions (163b) are integrally formed on: a pair of pillars (163a) and claw members (161a); and a pair of hinge portions (163c) are integrally formed on: the other end side of the outer body (110) and the pair of pillars (163a) facing the outer body (110).

Description

Technical Field

[0001] This invention relates to an operating lever, a syringe connector, and a connector that can connect two components and lock the engagement state between the engaging part of one component and the engaged part of the other component. Prior Technology

[0002] Previously known connectors link containers and apparatuses involve using a syringe to draw liquid medication from a small glass vial or similar container, or mixing the syringe's liquid medication with the container's liquid medication. Here, the liquid medication includes not only liquid medications but also those made by dissolving powdered or solid medications in a liquid such as saline solution. Such connectors typically include: a container connector that can be fixed to the opening of a container; and an apparatus connector that can be fixed to an apparatus, with one end open, through which the container connector is inserted to connect the two apparatuses.

[0003] For example, International Publication No. 2018 / 186361 discloses that a connector maintains the connection between the appliance connector and the container connector by means of engaging: engaging portions provided on the peripheral wall of the appliance connector and engaging portions provided on the outer peripheral surface of the container connector.

[0004] However, because the aforementioned engaging portion has a fixed portion that serves as the center of rotation between the engaging portion and the pressing portion, the engagement between the engaging portion of the appliance connector and the engaged portion of the container connector may be released whenever the container connector is pulled out from the appliance connector. Here, as disclosed in Japanese Patent No. 7322139, a known locking mechanism, by locking the engaging portion and the engaged portion, prevents the engagement between them from being released even during a stretching operation, and the lock can be released by pressing the operating lever. [Previous Technical Documents] [Patent Literature]

[0005] [Patent Document 1] International Publication No. 2018 / 186361 [Patent Document 2] Japanese Patent No. 7322139 Summary of the Invention

[0006] [The problem the invention aims to solve] For example, the locking mechanism disclosed in Japanese Patent No. 7322139, when operated correctly, involves pressing the operating lever to release the lock, and then, with the operating lever moved away, pulling the engaging and engaged parts separately in the direction of separation to release the lock. However, if the engaging and engaged parts are mistakenly pulled while the operating lever is pressed, although the lock on the operating lever is released, the locking claw may be damaged because the other components may remain engaged. If the locking claw is damaged, the tool can no longer be used.

[0007] There are also disposable connectors. Since the chemicals and agents are also adjusted and added, if the connector is damaged during operation or use, it may also become unusable.

[0008] The purpose of this invention is to provide an operating lever, syringe connector, and connector that can prevent misoperation. [Technical means used to solve the problem]

[0009] An operating lever of the present invention is disposed in a hole formed in the outer body of a syringe connector and engages with a locking portion of a container connector inserted into the syringe connector. The lever comprises: a pair of pillars arranged side-by-side in a direction orthogonal to a certain direction, one end of which is integrally formed with the outer body; a claw member comprising: a first claw portion inclined toward the outer side of the outer body in the aforementioned direction, and a second claw portion integrally formed with the first claw portion along the aforementioned direction; an operating head integrally formed at the end of the first claw portion and located on the outer side of that end relative to the outer body; a locking claw integrally formed at the end of the second claw portion and located on the inner side of that end relative to the outer body, the locking claw being capable of engaging with the locking portion; a pair of support portions integrally formed on the pair of pillars and the claw member; and a pair of hinge portions integrally formed on the other end side of the outer body and the side surface facing the outer body. [The effects of the invention]

[0010] According to the present invention, an operating lever, a syringe connector, and a connector can be provided to prevent misoperation. Simple Explanation of the Diagram

[0011] [Figure 1] shows a perspective view of the structure of the connector according to an embodiment of the present invention. [Figure 2] shows a cross-sectional view of the structure of the same connector. [Figure 3] Side view showing a portion of the structure of the connector cut off. [Figure 4] shows a perspective view of the structure of the container connector used with the same connector. [Figure 5] shows a side view of the structure of the container connector. [Figure 6] shows a top view of the structure of the container connector. [Figure 7] shows a cross-sectional view of the structure of the container connector. [Figure 8] shows a perspective view of the structure of the container fixing part body used in the same container connector. [Figure 9] shows a top view of the structure of the container fixing part body. [Figure 10] shows a cross-sectional view of the container fixing part body of the container connector being fixed to the container, with a portion of it omitted. [Figure 11] shows a perspective view of the structure of the needle component used in the same container connector. [Figure 12] shows a top view of the structure of the same needle component. [Figure 13] shows a side view of the structure of the same needle component. [Figure 14] shows a perspective view of the structure of the sealing cap used in the same container connector. [Figure 15] shows a side view of the structure of the same sealing cap. [Figure 16] shows a side view of the structure of the same sealing cap. [Figure 17] shows a bottom view of the structure of the same sealing cap. [Figure 18] A cross-sectional view of the same sealing cap structure shown by the F18-F18 line section in Figure 16. [Figure 19] A cross-sectional view of the same sealing cap structure shown by the cross-section along line F19-F19 in Figure 15. [Figure 20] shows a perspective view of the structure of the container seal used in the same container connector. [Figure 21] shows a side view of the structure of the same container seal. [Figure 22] shows a perspective view of the structure of the syringe connector used with the same connector. [Figure 23] shows a side view of the structure of the syringe connector. [Figure 24] shows a cross-sectional view of the structure of the syringe connector. [Figure 25] shows a perspective view of the structure of the outer body of the component used with the syringe connector. [Figure 26] shows a side view of the structure that forms the component with the outer perimeter. [Figure 27] shows a side view of the structure of the outer body component used with the syringe connector. [Figure 28] shows a side view of the structure that forms the component with the outer perimeter. [Figure 29] shows a side view of the structure of the operating lever provided on the same peripheral component. [Figure 30] shows a cross-sectional view of the same structure as the operating lever. [Figure 31] shows a perspective view of the structure of the needle holder used in the syringe connector. [Figure 32] shows a perspective view of the structure of the inner sleeve used in the same connector. [Figure 33] shows a side view of the structure of the inner sleeve. [Figure 34] shows the bottom view of the structure of the inner sleeve. [Figure 35] shows a perspective view of the structure of the head sleeve used with the syringe connector. [Figure 36] shows a side view of the structure of the same-head sleeve. [Figure 37] shows a side view of the structure of the same-head sleeve. [Figure 38] shows a top view of the structure of the same-head sleeve. [Figure 39] shows the bottom view of the structure of the same head sleeve. [Figure 40] shows a cross-sectional view of the structure of the same-head sleeve. [Figure 41] shows a perspective view of the structure of the stop sleeve used in the same connector. [Figure 42] shows a cross-sectional view of the structure of the stop sleeve. [Figure 43] shows a cross-sectional view of the structure of the stop sleeve. [Figure 44] shows a flowchart of an example of connecting a container connector and a syringe connector. [Figure 45] shows a flowchart of an example of connecting a container connector and a syringe connector. [Figure 46] shows a flowchart of an example of separating the container connector and the syringe connector. [Figure 47] shows a flowchart of an example of separating the container connector and the syringe connector. [Figure 48] Explanation of the connection between the container connector and the syringe connector. [Figure 49] Explanation of the connection between the container connector and the syringe connector. [Figure 50] Explanation of the connection between the container connector and the syringe connector. [Figure 51] Explanation of the connection between the container connector and the syringe connector. [Figure 52] Explanation of the connection between the container connector and the syringe connector. [Figure 53] Explanation of the connection between the container connector and the syringe connector. [Figure 54] Explanation of the connection between the container connector and the syringe connector. [Figure 55] shows a flowchart of an example of separating the container connector and the syringe connector. [Figure 56] shows a flowchart of an example of separating the container connector and the syringe connector. [Figure 57] shows a perspective view of the structure of a container connector according to another embodiment of the present invention. [Figure 58] shows a cross-sectional view of the structure of the container connector. [Figure 59] shows a side view of the structure of the operating lever used in the peripheral component of the syringe connector according to another embodiment of the present invention. [Figure 60] shows a side view of the structure of the operating lever used in the peripheral component of the syringe connector according to another embodiment of the present invention. [Figure 61] shows a cross-sectional view of the structure of the operating rod used in the peripheral component of the syringe connector according to another embodiment of the present invention. [Figure 62] shows a side view of the structure of the operating lever used in the peripheral component of the syringe connector according to another embodiment of the present invention. [Figure 63] shows a cross-sectional view of the same structure as the operating lever. [Figure 64] shows a side view of the structure of the operating lever used in the peripheral component of the syringe connector according to another embodiment of the present invention. [Figure 65] shows a cross-sectional view of the same structure as the operating lever. Implementation

[0012] The connector 10 of the present invention is illustrated using Figures 1 to 56. Figure 1 is a perspective view showing a portion of the connector 10 structure cut away. Figure 2 is a cross-sectional view showing the structure of the connector 10. Figure 3 is a side view showing a portion of the connector 10 structure cut away. Figure 4 shows the outer body 111 in Figure 2 rotated 90 degrees around its axis. Figure 5 is a perspective view showing the structure of the container connector 20 used by the connector 10.

[0013] Figure 6 is a top view showing the structure of the container connector 20. Figure 7 is a cross-sectional view showing the structure of the container connector 20. Figure 8 is a perspective view showing the structure of the container fixing part body 40 used in the container connector 20. Figure 9 is a top view showing the structure of the container fixing part body 40. Figure 10 is a cross-sectional view showing the container fixing part body 40 of the container connector 20 fixed to the container 1.

[0014] Figure 11 is a perspective view showing the structure of the needle member 60 used in the container connector 20. Figure 12 is a top view showing the structure of the needle member 60. Figure 13 is a side view showing the structure of the needle member 60. Figure 14 is a perspective view showing the structure of the sealing cap 70 used in the container connector 20. Figure 15 is a side view showing the structure of the sealing cap 70. Figure 16 is a side view showing the structure of the sealing cap 70 rotated 90 degrees about the axis shown in Figure 15.

[0015] Figure 17 is a bottom view showing the structure of the sealing cap 70. Figure 18 is a cross-sectional view showing the sealing cap 70 cut along line F18-F18 shown in Figure 16. Figure 19 is a cross-sectional view showing the sealing cap 70 cut along line F19-F19 shown in Figure 15. Figure 20 is a perspective view showing the structure of the container seal 90 used in the container connector 20. Figure 21 is a side view showing the structure of the container seal 90.

[0016] Figure 22 is a perspective view showing the structure of the syringe connector 100 used by the connector 10. Figure 23 is a side view showing the structure of the syringe connector 100. Figure 24 is a cross-sectional view showing the structure of the syringe connector 100. Figure 25 is a perspective view showing the structure of one of the peripheral body constituent members 132 used by the syringe connector 100. Figure 26 is a side view showing the structure of the peripheral body constituent member 132.

[0017] Figure 27 is a side view showing the structure of the outer body component 132 used in the syringe connector 100. Figure 28 is a side view showing the structure of the outer body component 132 and the flow of resin during molding indicated by arrows. Figure 29 is a side view showing the structure of the operating rods 160 formed on the outer body components 132 of both components. Figure 30 is a cross-sectional view showing the structure of the operating rods 160. Figure 31 is a perspective view showing the structure of the needle holder 122 used in the syringe connector 100. Figure 32 is a perspective view showing the structure of the inner sleeve 140 used in the syringe connector 100. Figure 33 is a side view showing the structure of the inner sleeve 140. Figure 34 is a bottom view showing the structure of the inner sleeve 140.

[0018] Figure 35 is a perspective view showing the structure of the head sleeve 180 used in the syringe connector 100. Figure 36 is a side view showing the structure of the head sleeve 180. Figure 37 is a side view showing the structure of the head sleeve 180. Figure 38 is a top view showing the structure of the head sleeve 180. Figure 39 is a bottom view showing the structure of the head sleeve 180. Figure 40 is a cross-sectional view showing the structure of the head sleeve 180. Figure 41 is a perspective view showing the structure of the stop sleeve 230 used in the connector 10. Figure 42 is a cross-sectional view showing the structure of the stop sleeve 230, with each of the two first wrists 231 of the stop sleeve 230 cut at different cutting positions. Figure 43 is a cross-sectional view showing the structure of the stop sleeve, with respect to the stop sleeve 230 shown in Figure 42, rotated 90 degrees around the axis. Furthermore, Figure 43 shows the state in which each of the two second wrists 232 of the stop sleeve 230 is cut off at a different cutting position.

[0019] Figures 44 and 45 are flowcharts showing examples of connecting the container connector 20 and the syringe connector 100, particularly examples of engaging the sealing cap 70 and the operating rod 160. Figures 46 and 47 are flowcharts showing examples of separating the container connector 20 and the syringe connector 100, particularly examples of disengaging the sealing cap 70 and the operating rod 160 (unengaging). Furthermore, in Figures 44 to 46, a portion of the structure of the container connector 20 and the syringe connector 100 is omitted. Figures 48 to 54 are explanatory diagrams showing examples of connecting the container connector 20 and the syringe connector 100, particularly examples of engaging the sealing cap 70 and the stop sleeve 230. Figures 55 and 56 are flowcharts showing other examples of separating the container connector 20 and the syringe connector 100, particularly examples of disengaging the sealing cap 70 and the operating rod 160 (unengaging).

[0020] As shown in Figures 1 to 3 and Figure 10, the connector 10 includes: a container connector 20, which is fixed to a container 1 containing a liquid medicine; and a syringe connector 100, which can be fixed to the barrel 8 of a syringe 7, and the container connector 20 can be detachably connected. Here, the container 1, for example, a small glass medicine bottle and an IV bag, as shown in Figure 10, includes: a body 2, which can be filled with liquid medicine; a neck 4, which is formed at the end of the body 2; and a plug 6, which seals the opening of the neck 4.

[0021] The plug 6 is made of resin such as rubber and elastomer and is flexible. Furthermore, if the plug 6 is inserted into the needle portion 62 of the needle member 60 described later in the container connector 20, a hole will be formed in the plug 6. However, the plug 6 itself has a restoring force, and when the needle portion 62 of the needle member 60 is removed, the hole can be plugged by the restoring force in a liquid-tight and airtight manner.

[0022] Furthermore, any container 1 can be used as long as it has a plug 6 and a structure that can contain the liquid medicine. However, in this embodiment, the example of the small glass medicine bottle shown in FIG10 will be described. The container 1 of the small glass medicine bottle is formed into a bottomed cylindrical shape that can contain the liquid medicine. The container 1, for example, includes: a body 2, which is formed into a cylindrical shape; a bottom wall portion 3, which is formed at the bottom end of the body 2 and closes the body 2; a neck 4, which is formed at the upper end of the body 2 and is formed into a cylindrical shape with a smaller diameter than the body 2; a flange 5, which is formed at the upper edge of the neck 4; and a plug 6, which is fixed in the opening of the neck 4 and seals the opening of the neck 4.

[0023] As shown in Figure 2, the connector 10 has a liquid flow path L1 communicating with the container 1 and the syringe 7, through which the syringe 7 can draw the liquid medicine from the container 1. Also as shown in Figure 2, the connector 10 has a gas flow path L2 communicating with the container 1 and the air bag 152 (described later), through which the pressure inside the container 1 can be maintained at a constant level. The connector 10 is configured with its vertical direction based on the position of the container 1 below and the syringe 7 above.

[0024] As shown in Figures 4 to 7, the container connector 20 includes: a container fixing part 30, which can be fixed to the container 1; a sealing cap 70, which is fixed to the container fixing part 30; and a container sealing element 90, which is disposed on the sealing cap 70. The container connector 20 may, for example, be configured as a sealing cap assembly that connects the sealing cap 70 and the container sealing element 90 to the syringe connector 100. The container fixing part 30 may be appropriately set according to the type of container 1, but the sealing cap assembly can use the same structure regardless of the container 1.

[0025] As shown in Figures 2 and 7, the container fixing part 30 includes: a liquid flow path component part L3, which forms part of the liquid flow path L1; and a gas flow path component part L4, which forms part of the gas flow path L2. This liquid flow path component part L3 and gas flow path component part L4 are container-side flow path component parts. Furthermore, the portions of the liquid flow path L1 and gas flow path L2 other than the liquid flow path component part L3 and gas flow path component part L4 are syringe-side flow path component parts. As shown in Figure 7, the container fixing part 30 specifically includes: a container fixing part body 40, which can be fixed to the container 1; and a needle component 60, which is fixed to the container fixing part body 40 and has flow path component parts L3 and L4 inside.

[0026] The container fixing body 40 can be fixed to the container 1 when the needle member 60 is inserted into the plug 6 at the opening of the container 1. As shown in Figures 7 to 9, the container fixing body 40 specifically includes: a base 41 on which the needle member 60 is fixed; two wrists 42 provided on the base 41; and two engaging parts 43 provided on each of the two wrists 42, each of which can engage with the neck 4 of the container 1.

[0027] As shown in Figures 8 and 9, the base 41 is plate-shaped and has a hole 44 in the center for mounting the needle member 60. As shown in Figure 9, the hole 44 has an arc-shaped arc portion 45 and a rectangular portion 46.

[0028] As shown in Figures 8 and 9, a locking claw 47 is formed on the base 41, which engages with the needle member 60 inserted into the hole 44. The locking claw 47 is disposed on the upper surface of the base 41, for example, near the hole 44. A plurality of locking claws 47 are formed, specifically two. The two locking claws 47 are arranged facing each other on both sides of the hole 44.

[0029] As shown in Figure 8, the engaging claw 47 has: a base 48 extending upward from the upper surface of the base 41, forming an elongated plate shape; and a claw 49 formed at the upper end of the base 48. The surface of the claw 49 that does not face the other engaging claw 47 is an inclined surface, and the lower end of the inclined surface is located further outward in the radial direction from the hole 44 than the upper end.

[0030] As shown in Figures 8 and 9, two wrists 42 are integrally formed with the base 41. The two wrists 42 are positioned symmetrically with respect to the base 41. A portion of each wrist 42 is located above one end of the wrist 42 on the side of the base 41. As shown in Figure 8, the wrist 42 specifically includes: a first wrist 50, a folded-back portion 51, and a second wrist 52.

[0031] The first wrist portion 50 is continuously formed with the base portion 41, extending upwards in a plate-like shape. The folded-back portion 51 is continuously formed with the first wrist portion 50, folding downwards relative to the first wrist portion 50. The second wrist portion 52 is continuously formed with the folded-back portion 51. The second wrist portion 52, for example, extends downwards further than the base portion 41, and its front end bends towards the side opposite to the second wrist portion 52. A locking portion 43 is provided at the front end of the second wrist portion 52.

[0032] With such a structure, the two wrists 42 can be moved in the direction of approaching and separating from each other by elastically deforming the first wrist 50, the folding part 51 and the second wrist 52.

[0033] As shown in Figures 3 to 5 and Figure 8, the engaging portion 43 is inclined away from the opposing engaging portion 43 in the direction of separation from the base 41. Furthermore, as shown in Figures 4, 6, and 8, in the width direction (the circumferential direction centered on the vertical direction) orthogonal to the vertical direction, the central side of the engaging portion 43 is curved outwards more than the end side. Also, as shown in Figures 4, 6, and 8, the engaging portion 43 is formed in a curved shape that becomes convex from the side away from the other engaging portion 43.

[0034] The circumferential length of the lower end of the engaging portion 43 is set to be longer than the circumferential length of the upper end of the engaging portion 43. Furthermore, the circumferential length of the lower end of the engaging portion 43 is set to be longer than the length along the vertical direction of the engaging portion 43 from its upper end to its lower end. Here, the circumferential length of the engaging portion 43 is the length of the engaging portion 43 in the circumferential direction centered on the vertical direction.

[0035] The upper end of the engaging portion 43 becomes the abutting portion 53 that abuts against the neck 4 of the container 1. The inner surface of the engaging portion 43, that is, the surface facing the paired engaging portions 43, becomes the guide surface 54 that abuts against the flange 5 of the container 1 and guides the neck 4 toward the abutting portion 53.

[0036] The abutting portion 53 is shaped to abut against the neck 4 of the container 1 at two points. In other words, a pair of abutting portions 53 abut against the neck 4 at four points. Furthermore, the guide surface 54 of the engaging portion 43 is shaped to contact the flange 5 at two points during the process of guiding the neck 4 toward the abutting portion 53.

[0037] The guide surface 54 is tilted in the vertical direction such that the lower end of the guide surface 54 is located further away from the upper end of the guide surface 54 in the vertical direction.

[0038] As shown in Figures 4 to 9, the guide surface 54 is formed as a convex curved surface toward the engaging portion 43. Furthermore, the circumferential length of the lower end of the guide surface 54 is set to be longer than the circumferential length of the upper end of the guide surface 54. Also, the circumferential length of the lower end of the guide surface 54 is set to be longer than the length along the vertical direction of the guide surface 54 from the upper end to the lower end.

[0039] The guide surface 54 with such a structure, for example, by becoming a curved surface symmetrical about the center in the circumferential direction on both sides in the circumferential direction, can become the surface of the flange 5 of the container 1 that contacts the container 1 at two points when the container connector 20 is fixed to the container 1.

[0040] The shape of the guide surface 54 is set such that even if the container 1 with the largest outer diameter of the body 2 among the plurality of containers 1 with different outer diameters is used, when its flange 5 abuts against the guide surface 54 and is guided toward the abutting part 53, the guide surface 54 can still be prevented from abutting against the body 2.

[0041] As shown in Figures 7, 11 to 13, the needle member 60 has: a needle member base 61 that forms one end of the needle member 60; and a needle portion 62 that forms the other end of the needle member 60.

[0042] The needle member base 61 forms the upper portion of the base 41. The needle member base 61 is columnar. A flange 63 is formed in the upper edge of the needle member base 61. Furthermore, an annular protrusion 64 is formed on the outer peripheral surface of the needle member base 61, extending in a direction away from the axis of the needle member base 61. Specifically, three protrusions 64 are formed. A columnar portion 65 is formed between the flange 63 and the protrusions 64 facing the flange 63. A columnar portion 65 is formed between two facing protrusions 64.

[0043] Furthermore, an anti-rotation portion 66 is provided at the lower end of the outer peripheral surface of the needle member base 61, and the anti-rotation portion 66 can be disposed within the rectangular portion 46 of the hole 44. The shape of the cross section of the anti-rotation portion 66, which is orthogonal to the axial direction of the needle member base 61, is, for example, the same shape as the rectangular portion 46 or a smaller shape.

[0044] As shown in FIG7, an abutment portion 67 is formed at the lower end of the outer peripheral surface of the needle member base 61, and the abutment portion 67 abuts against the edge of the hole 44 from above. The abutment portion 67, for example, constitutes a protrusion that causes a portion of the outer peripheral surface of the needle member base 61 to protrude. By having the abutment portion 67 abut against the edge of the hole 44 from above, the needle member 60 is held in the hole 44.

[0045] The needle portion 62 is positioned below the base 41. The front end of the needle portion 62 forms a sharp point.

[0046] The needle member 60 with such a structure has, internally: a liquid flow path member part L3, which forms part of the liquid flow path L1; and a gas flow path member part L4, which forms part of the gas flow path L2.

[0047] The liquid flow path component L3 is a hole extending in the axial direction of the needle member 60 from the upper end face of the needle member base 61 toward the lower end face of the needle member 62. The lower end of the liquid flow path component L3 opens onto the surface of the needle member 62. The shape of the liquid flow path component L3 is such that, compared with the flow path area orthogonal to the axial direction of the needle member 60, the portion of the liquid flow path component L3 located at the needle member base 61 is larger than the portion located at the needle member 62.

[0048] The gas flow path component L4 is a hole extending from the upper end face of the needle member base 61 toward the lower end face of the needle part 62 in the axial direction of the needle member 60. The lower end of the gas flow path component L4 opens onto the surface of the needle part 62. The shape of the gas flow path component L4 is such that, compared with the flow path area orthogonal to the axial direction of the needle member 60, the portion constituting the needle member base 61 is larger than the portion constituting the needle part 62.

[0049] Furthermore, the lower opening of the liquid flow path component L3 is located above the lower opening of the gas flow path component L4. This is so that when the connector 10, the container 1, and the syringe 7 are tilted while the container 1 is positioned above the connector 10, the liquid medicine remaining on the neck side of the container 1 can be guided to the liquid flow path component L3.

[0050] As shown in Figures 14 to 19, the sealing cap 70 is formed in a cylindrical shape on the inside to accommodate the needle member base 61 and the container seal 90. Furthermore, the sealing cap 70 is designed to release the lock between the peripheral body 110 of the syringe connector 100 (described later) and the stop sleeve 230, and can be locked together with the stop sleeve 230. The sealing cap 70 is cylindrical in shape to fit into the needle member base 61.

[0051] As shown in Figures 14 and 15, the sealing cap 70 specifically includes: a cylindrical large-diameter portion 71 for sealing cap, a medium-diameter portion 72 for sealing cap formed on the large-diameter portion 71 for sealing cap, and a small-diameter portion 73 for sealing cap formed on the medium-diameter portion 72 for sealing cap.

[0052] A plurality of grooves extending in the circumferential direction are formed on the outer peripheral surface of the large-diameter portion 71 of the sealing cap. The intermediate-diameter portion 72 of the sealing cap is formed with a smaller diameter than the large-diameter portion 71 of the sealing cap. The intermediate-diameter portion 72 of the sealing cap is formed in such a way that if the container connector 20 is inserted into the syringe connector 100 and reaches a predetermined position within the syringe connector 100, it can abut against the stop sleeve 230 of the syringe connector 100 (described later) and release the lock between the stop sleeve 230 and the outer body 110. Specifically, the upper end 72a of the outer peripheral surface of the intermediate-diameter portion 72 of the sealing cap is formed into a conical surface that gradually narrows upward.

[0053] Furthermore, a locking recess 77 is formed in the middle diameter portion 72 of the sealing cap. If the container connector 20 is inserted into the syringe connector 100 and reaches the predetermined position within the syringe connector 100, the locking recess 77 can engage with the stop sleeve 230.

[0054] The locking recess 77 is a recess formed in the axial direction from the lower end to the middle part of a portion of the outer peripheral surface of the sealing cap's intermediate diameter portion 72. The upper surface inside the locking recess 77 forms a locking surface that can engage with the stop sleeve 230.

[0055] Furthermore, a locking portion 78 is formed in the middle diameter portion 72 of the sealing cap, which can engage with the operating lever 160 of the syringe connector 100 (described later). Specifically, the locking portion 78 is formed in a part of the upper end portion 72a, which is a conical surface formed on the outer peripheral surface of the middle diameter portion 72 of the sealing cap. The locking portion 78 is a protrusion that protrudes radially outward from a part of the middle diameter portion 72 of the sealing cap. The lower surface 79 of the locking portion 78 is, for example, a plane orthogonal to the axial direction of the sealing cap 70. The upper surface 162a of the locking claw 162 of the operating lever 160 (described later) engages with the lower surface 79 of the locking portion 78.

[0056] Furthermore, a first guide protrusion 75 is formed on the outer peripheral surface of the large diameter portion 71 of the sealing cap and the outer peripheral surface of the medium diameter portion 72 of the sealing cap. The first guide protrusion 75 guides the container connector 20 to move in the axial direction of the outer peripheral body 111 within the outer peripheral body 111 of the syringe connector 100.

[0057] The first guide protrusion 75 forms a protrusion that extends outward in the radial direction. The first guide protrusion 75 forms a first guide groove 126 that can be housed within the outer body 111. The first guide protrusion 75 may be multiple, for example. The first guide protrusion 75 may be single, for example.

[0058] The sealing cap small diameter portion 73 is formed into a cylindrical shape with a smaller diameter than the upper end of the sealing cap medium diameter portion 72. The sealing cap small diameter portion 73 is formed into a cylindrical shape that is movably fitted into the head sleeve 180 of the syringe connector 100 (described later).

[0059] As shown in Figures 18 and 19, the edge 73b of the opening 73a at the upper end of the small-diameter portion 73 of the sealing cap forms an annular shape extending inward in the radial direction. The opening 73a is circular. Furthermore, the length of the small-diameter portion 73 of the sealing cap between the lower surface 73c of the edge 73b and the upper end of the needle member base 61 in the axial direction can accommodate a portion of the container seal 90.

[0060] As shown in Figures 18 and 19, the inner circumferential surface 76 of the sealing cap 70 with this structure has a groove 81, in which the engaging claws 47 of the container fixing body 40 can be disposed. The groove 81 extends in the axial direction and has an engaging surface 82 at its end that engages with the claw portion 49 of the engaging claw 47. The engaging surface 82 is, for example, a plane orthogonal to the axial direction. The engaging claws 47 of the container fixing body 40 are received in the groove 81, and the sealing cap 70 and the container fixing body 40 are fixed by engaging the claw portion 49 with the engaging surface 82 in the axial direction.

[0061] A portion of the container seal 90 is housed within the sealing cap 70, while another portion of the container seal 90 is disposed outside the sealing cap 70 through an opening 73a at the upper end of the sealing cap 70. The container seal 90 is configured to seal the opening 73a of the sealing cap 70. Furthermore, the container seal 90 forms seals that can seal the openings of the liquid flow path member L3 and the gas flow path member L4 in the needle member 60.

[0062] The container seal 90 is formed from a resin such as rubber and elastomer and is flexible. Furthermore, it is formed in such a way that, after the liquid needle 170 and gas needle 175 have moved, the restoring force can seal the hole formed by the insertion of the liquid needle 170 and gas needle 175 (described later) via the syringe connector 100, thus achieving both liquid and gas tightness.

[0063] As shown in Figures 20 and 21, the container seal 90 specifically includes: a large-diameter portion 93 disposed within the sealing cap 70; a small-diameter portion 94 formed on the upper surface of the large-diameter portion 93 and disposed within the opening 73a; a first fitting portion 96 formed on the lower surface of the large-diameter portion 93 and disposed within the opening of the liquid flow path member portion L3; and a second fitting portion 97 formed on the lower surface of the large-diameter portion 93 and disposed within the opening of the gas flow path member portion L4.

[0064] The large-diameter portion 93 of the seal is formed to seal between the seal and the inner circumferential surface 76 of the sealing cap 70. Specifically, the large-diameter portion 93 of the seal is cylindrical and has an outer diameter larger than the inner diameter of the sealing cap 70, and is longer in the axial direction than the distance from the upper end of the needle member 60 to the edge 73b of the small-diameter portion 73 of the sealing cap.

[0065] The small diameter portion 94 of the seal is formed to seal the opening 73a. Specifically, the small diameter portion 94 of the seal is formed into a cylinder, having an outer diameter larger than the inner diameter of the opening 73a, and a portion therein protruding upwards in the axial direction than the upper surface of the small diameter portion 73 of the seal cap.

[0066] The small-diameter portion 94 of the seal, which protrudes further outward than the upper surface of the small-diameter portion 73 of the sealing cap, is the amount of compression that seals the area between the small-diameter portion 94 and the needle seal 200 by abutting against and being crushed. This amount of compression is set to seal the area between the upper surface of the small-diameter portion 94 and the needle seal 200. The upper end face 95 of the small-diameter portion 94 forms a plane orthogonal to the axial direction of the small-diameter portion 94.

[0067] The first fitting portion 96 is formed to seal the opening of the liquid flow path component portion L3. Specifically, the first fitting portion 96 is cylindrical and has an outer diameter larger than the inner diameter of the liquid flow path component portion L3.

[0068] The second fitting portion 97 is formed to seal the opening of the gas flow path component portion L4. Specifically, the second fitting portion 97 is cylindrical and has an outer diameter larger than the inner diameter of the gas flow path component portion L4.

[0069] Next, the syringe connector 100 will be described. As shown in Figures 1 to 3 and Figures 22 to 24, the syringe connector 100 includes: an outer body 110, an air bag 152 housed within the outer body 110, a liquid needle 170 forming part of a liquid flow path L1, a gas needle 175 forming part of a gas flow path L2, a cylindrical head sleeve 180 movably housed within the outer body 110, a needle seal 200 fixed within the head sleeve 180, a stop sleeve 230 selectively fixing the head sleeve 180 to the outer body 110 and selectively fixing the head sleeve 180 and the container connector 20, and a pushing member 250 that pushes the head sleeve 180 from the outer body 111 in the dispensing direction.

[0070] As shown in Figures 22 to 24, the outer body 110 has: an outer body body 111; an air bag storage part 150 for storing an air bag 152; and an operating lever 160 for releasably locking the outer body body 111 to the container connector 20.

[0071] The outer body 111 is formed into a bottom cylindrical shape. Specifically, the outer body 111 has: a top wall portion 114; a syringe fixing portion 115 formed in the top wall portion 114, which can fix the barrel portion 8 of the syringe 7; a liquid needle fixing portion 116 formed in the top wall portion 114, which can fix the liquid needle 170; a cylindrical body portion 117 formed at the periphery of the top wall portion 114; and an inner sleeve 140, which is fixed inside the outer body 111.

[0072] As shown in Figures 22 and 24, the top wall portion 114 is, for example, formed in a circular plate shape. A syringe fixing portion 115 is formed on the upper surface of the top wall portion 114 and is cylindrical, protruding upwards from other parts of the upper surface. The syringe fixing portion 115 is designed to fit into the front end of the cylindrical portion 8. Specifically, the syringe fixing portion 115 includes: a cylindrical syringe fixing body 120 and a syringe fixing protrusion 121 formed on the periphery of the upper end of the syringe fixing body 120 and protruding radially outwards.

[0073] The syringe fixing part protrusion 121 is formed in multiple forms. The syringe fixing part protrusion 121 has a predetermined length in the circumferential direction of the syringe fixing part body 120. The syringe fixing part protrusion 121 fixes the syringe 7 and the syringe connector 100 by screwing into the female thread formed at the front end of the barrel part 8.

[0074] The liquid needle fixing part 116 protrudes downward from the lower surface of the top wall part 114 and forms a cylindrical shape inside to fix the liquid needle 170. The liquid needle fixing part 116 communicates with the syringe fixing part body 120. The liquid needle fixing part 116 is, for example, formed into a cylindrical shape.

[0075] The syringe fixing part 115 and the liquid needle fixing part 116 are formed, for example, by a needle holder 122 that is a different component from other parts of the outer body 111. In other words, the syringe fixing part 115 and the liquid needle fixing part 116 are formed by mounting the needle holder 122 on the outer body 111.

[0076] As shown in Figure 31, the needle holder 122 has: a base 124, a syringe fixing part 115, and a liquid needle fixing part 116. As shown in Figure 31, the base 124 is cylindrical, with a larger diameter than the liquid needle fixing part 116 and a smaller diameter than the syringe fixing part 115. As shown in Figure 31, a ratchet 124a is formed on the outer peripheral surface of the base 124. The ratchet 124a only allows the needle holder 122 to rotate in one direction about the axis of the syringe fixing part 115, and restricts rotation in the opposite direction. The direction of rotation of the needle holder 122 allowed by the ratchet 124a is the direction in which the syringe 7 is rotated relative to the syringe fixing part 115 to remove it from the syringe fixing part 115.

[0077] As shown in Figures 22 and 23, a protrusion 123 is formed on a portion of the outer peripheral surface of the outer body 111 and below the top wall portion 114, protruding inward toward the outer body 111. Specifically, as shown in Figure 27, the protrusion 123 is formed as a strip extending in the circumferential direction, with one end integrally formed with the outer body 111 and disposed within a hole in the outer body 111. Furthermore, a protrusion 123a is formed on the inner surface of the other end of the protrusion 123. When the syringe 7 is rotated in a snap-fit ​​manner to secure it to the syringe fixing portion 115, the protrusion 123a restricts the rotation of the needle holder 122 by abutting against the ratchet 124a.

[0078] As shown in Figures 22 and 23, the body portion 117 is cylindrical in shape, movably fitted with a large-diameter portion 71 for sealing the container connector 20. A hole 117a is formed in the upper end portion of the body portion 117 for housing a portion of the inner sleeve 140. The hole 117a communicates with the air bag storage portion 150.

[0079] As shown in Figures 26 and 27, a first guide groove 126 and a second guide groove 127 are formed inside the body portion 117. Specifically, a first guide groove 126 is formed on a portion of the lower end of the inner circumferential surface 117b of the body portion 117, in which a first guide protrusion 75 movably accommodates the sealing cap 70 of the container connector 20. The first guide groove 126 opens at the lower end of the body portion 117. The first guide protrusion 75 penetrates into the first guide groove 126 through this opening.

[0080] The length of the first guide groove 126 is such that it can guide the container connector 20 to move upward until the liquid needle 170 is disposed in the liquid flow path component L3 and the gas needle 175 is disposed in the gas flow path component L4, and the liquid flow path L1 and the gas flow path L2 can be formed.

[0081] The first guide groove 126 extends along the axial direction of the outer body 110. The width of the first guide groove 126 along the circumferential direction of the outer body 110 is such that the first guide protrusion 75 is movably embedded within it. The inner surface of the first guide groove 126, by abutting against the first guide protrusion 75 in the circumferential direction, prevents rotation of the container connector 20. The first guide groove 126 is formed with a number corresponding to the number of first guide protrusions 75. For example, one first guide groove 126 is formed.

[0082] Furthermore, in the middle part of the inner circumferential surface of the torso 117 in the axial direction, a second guide groove 127 is formed that is parallel to the first guide groove 126 in the axial direction, in which the second guide protrusion 182 of the head sleeve 180 (described later) is movably housed.

[0083] The second guide groove 127 extends along the axis of the outer body 111. The length of the second guide groove 127 is sufficient to guide the container connector 20 upward until the liquid flow path L1 and the gas flow path L2 are formed.

[0084] The second guide groove 127, with a width along the circumferential direction of the outer body 111, is sized such that the second guide protrusion 182 can be movably embedded. The inner surface of the second guide groove 127 is configured to prevent rotation of the head sleeve 180 by abutting against the second guide protrusion 182 in the circumferential direction. For example, a plurality of second guide grooves 127 may be formed. For example, two second guide grooves 127 may be formed, each arranged 180 degrees apart in the circumferential direction of the outer body 111.

[0085] Furthermore, in the middle portion of the inner circumferential surface of the torso 117 in the axial direction, at a position offset in the circumferential direction from the second guide groove 127, as shown in FIG26, a locking protrusion 128 is formed. The locking protrusion 128 protrudes radially inward toward the outer body 111.

[0086] The locking protrusion 128 is formed to restrict movement toward the head sleeve 180 that is fixed to the stop sleeve 230 by engaging with the stop sleeve 230.

[0087] Locking protrusions 128, for example, are formed in a plurality. Locking protrusions 128, for example, are formed in two. The two locking protrusions 128 are arranged 180 degrees apart in the circumferential direction of the body 117, and are positioned at a position that is offset by 45 degrees from the circumferential direction of the outer body 111 relative to the first guide groove 126 and the second guide groove 127.

[0088] Furthermore, in the middle portion of the inner circumferential surface of the torso 117 in the axial direction, at a position offset in the circumferential direction from the locking protrusion 128, as shown in FIG27, a locking release protrusion 129 is formed. The locking release protrusion 129 protrudes radially inward toward the outer body 111.

[0089] The locking release protrusion 129 is formed to release the engagement between the stop sleeve 230 and the locking recess 77 of the container connector 20 by abutting against the stop sleeve 230.

[0090] The locking release protrusion 129, for example, is formed such that the middle part of the torso 117 protrudes radially inward from the outermost body body 111 in the axial direction, and crosses the middle part from its upper and lower ends, with the amount of protrusion in the radial direction gradually increasing.

[0091] Lock release protrusions 129, for example, are formed in a plurality. Lock release protrusions 129, for example, are formed in two. The two lock release protrusions 129 are arranged 180 degrees apart in the circumferential direction of the outer body 111, and are positioned 90 degrees away from the locking protrusion 128 in the circumferential direction.

[0092] A hole 131 is formed in the lower end of the body 117, as shown in Figures 22 to 27. An operating rod 160 integrally formed with the body 117 can be disposed in the hole 131. The hole 131 extends through the body 117 in the radial direction. For example, a plurality of holes 131 are formed. For example, two holes 131 are formed. The two holes 131 are arranged to be 180 degrees apart in the circumferential direction of the outer body 110, for example, at a position 90 degrees away in the circumferential direction from the first guide groove 126 and the second guide groove 127.

[0093] The outer body 111 with such a structure is, for example, composed of a plurality of components. The outer body 111 is, for example, constructed by fixing and integrally assembling two outer body constituent components 132. Figures 25 and 26 show one of the outer body constituent components 132. Figure 27 shows the inner surface of the other outer body constituent component 132.

[0094] As shown in Figures 25 to 27, each of the two peripheral body components 132 has a shape that divides the peripheral body body 111 into two parts by the following surface, which passes through the axis of the peripheral body body 111 and is parallel to the axial direction of the peripheral body body 111 and the direction in which the peripheral body body 111 and the air bag storage part 150 are parallel.

[0095] For example, one of the peripheral body components 132 has a plurality of pins 134. In the other peripheral body component 132, a plurality of holes 135 are formed for the plurality of pins 134 to engage. By engaging the plurality of pins 134 with the plurality of holes 135, the two peripheral body components 132 are fixed together.

[0096] As shown in FIG2, the inner sleeve 140 forms a gas flow path component L5 in the gas flow path L2, which is the portion from the gas needle 175 to the air bag 152. Specifically, as shown in FIG32 to FIG34, the inner sleeve 140 has an inner sleeve body 141 and an extension 142 extending from the inner sleeve body 141 toward the air bag storage portion 150.

[0097] The inner sleeve body 141 is cylindrical. A hole 143 is formed in the inner sleeve body 141 to rotatably assemble the liquid needle fixing part 116. As shown in FIG34, a gas needle fixing part 144 is formed on the lower surface of the inner sleeve body 141 at a position parallel to the hole 143, for example in the radial direction, to fix the gas needle 175. The gas needle fixing part 144 is the hole that fixes the gas needle 175. The gas needle fixing part 144 communicates with the gas flow path member part L5 of the gas flow path L2.

[0098] The protrusion 142 is connected to the air bag 152. The protrusion 142 is, for example, formed into a cylindrical shape that protrudes radially outward from the upper end of the outer peripheral surface of the inner sleeve body 141. As shown in FIG2, the protrusion 142 has: a support portion 145 disposed in and supported by a hole 117a in the outer body body 111; and a fixing portion 146 disposed within the air bag storage portion 150 and fixing the air bag 152.

[0099] The support portion 145 is formed into a cylindrical shape with an inner diameter approximately the same as that of the hole 117a. The fixing portion 146 is, for example, formed into a cylindrical shape with a larger diameter than that of the support portion 145. A flange 147 is formed at the front end of the fixing portion 146.

[0100] The fixing part 146 is, for example, disposed above or below the center of the air bag storage part 150 in the vertical direction. In this embodiment, as one example, the fixing part 146 is disposed above the center of the air bag storage part 150 in the vertical direction.

[0101] Furthermore, as shown in Figures 2 and 33, the end face 148 of the flange 147 forms various inclined planes in the vertical direction and the axial direction of the fixing part 146 when the inner sleeve 140 is installed on the outer body 110.

[0102] When the fixing part 146 is positioned above the center of the air bag storage part 150 in the vertical direction, the lower end 148a of the end face 148 is located on the plane closer to the support part 145 than the upper end 148b. In other words, the upper end 148b is located closer to the centerline of the air bag storage part 150 than the lower end 148a. Here, the centerline is a line parallel to the center of the air bag storage part 150 in the vertical direction.

[0103] Furthermore, when the fixing part 146 is positioned below the center of the air bag storage part 150 in the vertical direction, the upper end 148b of the end face 148 is located on the plane closer to the support part 145 than the lower end 148a. In other words, the lower end 148a is located closer to the centerline of the air bag storage part 150 than the upper end 148b.

[0104] The thickness of the flange 147 gradually increases from the upper end 148b to the center in the vertical direction, and gradually decreases from the center in the vertical direction to the lower end 148a. The inner sleeve 140 with this shape can be manufactured by injection molding by setting the dividing line at the center of the flange 147 as the junction of the upper and lower molds.

[0105] Furthermore, end face 148 may be formed such that when the fixing part 146 is located below the center of the air bag storage part 150 in the vertical direction, the lower end 148a is located on a plane that is closer to the center line of the air bag storage part 150 than the upper end 148b.

[0106] As shown in FIG2, the air bag storage section 150 is configured to be separated from the outer body body 111 in a direction orthogonal to the axial direction of the outer body body 111. In this embodiment, the air bag storage section 150 is arranged side by side on the outer body body 111 in a direction in which the two first guide grooves 126 are parallel. The air bag storage section 150 is formed in the shape of a box with an internal space for storing the air bag 152.

[0107] Furthermore, the airbag storage section 150, for example, is cylindrical in appearance, with its axis arranged parallel to the axis of the outer body 111. The upper wall of the airbag storage section 150 forms an upward-protruding dome shape, and the upper surface 150a of the internal space of the airbag storage section 150 also forms an upward-protruding dome shape. The upper surface 150a has a shape where its upper end protrudes upward along the axis of the airbag storage section 150, for example, forming a bowl shape. The lower wall of the airbag storage section 150 forms a downward-protruding dome shape, and the bottom surface 150b of the internal space of the airbag storage section 150 also forms a downward-protruding dome shape. The bottom surface 150b has a shape where its lower end protrudes downward along the axis of the airbag storage section 150, for example, forming a bowl shape.

[0108] The air bag storage section 150 is fixed to the outer body 111 by the connecting part 151. Furthermore, the shape of the air bag 152 can be seen by using a transparent or translucent resin material, or by providing an opening and a transparent window on a part of the wall of the air bag storage section 150.

[0109] The air bag storage section 150 and the connecting section 151 with such a structure can be constructed, for example, by combining multiple components. The air bag storage section 150 can be constructed, for example, by fixing two constituent components. In this embodiment, as shown in Figures 3 and 6, one of the constituent components constituting the air bag storage section 150 is integrally formed with a portion of the outer body constituent component 132 and the connecting section 151. The other constituent component constituting the air bag storage section 150 is integrally formed with the other portion of the connecting section 151 with the other outer body constituent component 132. In other words, by fixing two outer body constituent components 132, the outer body body 111, the air bag storage section 150, and the connecting section 151 are constructed.

[0110] As shown in Figures 22 to 24, the operating lever 160 is, for example, partially disposed within the hole 131. When the container connector 20 is inserted into the outer body 111, forming a liquid flow path L1 and a gas flow path L2, the operating lever 160 engages with the engaging portion 78 of the sealing cap 70. The operating lever 160 is locked in place by engaging with the engaging portion 78, preventing movement in the direction in which the connected container connector 20 and syringe connector 100 are separated. Furthermore, the operating lever 160 is configured such that its engagement with the engaging portion 78 can be released by operation. Additionally, the operating lever 160 is configured to lock into engagement with the engaging portion 78. This operating lever 160 and engaging portion 78 constitute a locking mechanism for locking each other in place. For example, a plurality of operating levers 160 may be provided; specifically, two are provided. The two operating levers 160 are arranged 180 degrees apart around the axis of the outer body 111.

[0111] The operating lever 160 is integrally formed with the body 117. Specifically, as shown in Figures 28 to 30, the operating lever 160 includes: an operating lever 161 whose length direction is arranged in the axial direction of the outer body 111; a locking pawl 162 formed at the end of the operating lever 161 and engaged with the engaging portion 78 of the sealing cap 70; and an operating lever hinge portion 163 that supports the operating lever 161 and allows it to rotate about a predetermined axis.

[0112] The operating lever 161 is an operating body that allows the operator to press and operate when the locking claw 162 and the engaged part 78 are disengaged.

[0113] The operating lever 161 includes a claw member 161a and an operating head 161b. Specifically, the operating head 161b is integrally provided at the upper end of one end of the claw member 161a, and a locking claw 162 is integrally formed at the lower end of the other end of the claw member 161a.

[0114] The claw member 161a includes, for example, a first claw portion 161a1, which is formed as a plate that is elongated in one direction and extends from the center of the claw member 161a to one end; and a second claw portion 161a2, which is integrally formed with the first claw portion 161a1 and is also formed as a plate that is elongated in one direction and extends from the center of the claw member 161a to the other end. The first claw portion 161a1 and the second claw portion 161a2 are inclined at a predetermined angle, for example, 155 degrees. For example, in the initial position where no external force is applied to the operating lever 161, the first claw portion 161a1 is inclined, for example, at 25 degrees relative to the axial direction of the peripheral body 111 such that its upper end faces outward toward the outer side of the peripheral body 111, and the second claw portion 161a2 extends along the axial direction of the peripheral body 111.

[0115] The operating head 161b is the end of the first claw portion 161a1 and is integrally formed on the outer side of the outer body 111 (outer body) of the first claw portion 161a1. The operating head 161b is thicker than the first claw portion 161a1 and wider than the width orthogonal to the vertical direction of the first claw portion 161a1. Specifically, the operating head 161b is formed into a rectangular plate shape. For example, the corners and edges of the operating head 161b are formed into curved surfaces. The outer surface of the operating head 161b is planar and is formed into a rectangle that is longer in the vertical direction when viewed from above. Furthermore, the corners and edges of the operating head 161b are formed into curved surfaces. That is, the corners between the upper surface (first surface) and the side surface (second surface) in the width direction of the operating head 161b, and the corners between the lower surface (third surface) and the side surface (second surface) are formed into curved surfaces with a specified radius of curvature. Furthermore, the edges between the upper surface (first surface), side surface (second surface), and lower surface (third surface) of the operating head 161b and the outer surface being operated (i.e. the edges in the outer periphery of the outer surface of the operating head 161b) are curved surfaces forming a specified radius of curvature.

[0116] For example, in the operating head 161b, the radius of curvature of the corner between the upper surface and the side surface is larger than the radius of curvature of the corner between the lower surface and the side surface, and the radii of curvature of the edges between the upper surface, the side surface, the lower surface and the outer surface. In one example, the radius of curvature of the corner between the upper surface and the side surface is 1.2 mm, and the radius of curvature of the corner between the lower surface and the side surface, and the radii of curvature of the edges between the upper surface, the side surface, the lower surface and the outer surface is 0.4 mm. Furthermore, the radius of curvature of the corner between the upper surface and the side surface in the operating head 161b is smaller than half the width dimension of the operating head 161b, thereby forming a straight section on the upper surface of the operating head 161b.

[0117] The locking claw 162 engages with the engaging portion 78 of the sealing cap 70 when the syringe connector 100 is inserted into the container connector 20 to form a liquid flow path L1 and a gas flow path L2. The locking claw 162 is integrally formed at the end of the second claw portion 161a2 and is located on the side of the second claw portion 161a2 opposite to the first claw portion 161a1, and is located inside the outer body body 111. Specifically, the locking claw 162 faces inward in the radial direction of the outer body body 111 and protrudes from the main surface (inner surface) of the second claw portion 161a2, which is inside the outer body body 111. The upper surface 162a of the locking claw 162 abuts against the lower surface of the engaging portion 78 in the vertical direction, thereby bearing the axial load of the body 117 of the container connector 20 from the engaging portion 78. In other words, the engaging portion 78 bears the load when the container connector 20 is pulled out of the syringe connector 100, i.e., pulled downwards. The upper surface 162a may be formed as a plane orthogonal to the vertical direction. The lower surface 162b of the locking claw 162 abuts against the sealing cap 70 when the container connector 20 is inserted into the syringe connector 100. The lower surface 162b is formed as a guide surface for guiding the movement of the sealing cap 70. Specifically, the lower surface 162b is formed as a plane or curved surface that gradually extends upwards toward the inner side of the outer body 111. In other words, the lower surface 162b is inclined upwards in the vertical direction from the base of the locking claw 162 located on the side of the second claw portion 161b2 toward the front end.

[0118] The control lever hinge 163 includes: a pair of support pillars 163a that are integrally continuous with the body 117 at one end; a pair of support portions 163b that connect the control lever 161 and the pair of support pillars 163a; and a pair of hinge portions 163c that connect the pair of support pillars 163a and the outer body 111.

[0119] The support column 163a is formed into a plate-like shape that is relatively long in one direction. A pair of support columns 163a are arranged side by side with a predetermined gap in the width direction (circumferential direction) of the outer body 111. In the pair of support columns 163a, the upper end is integrally and continuously formed with the outer body 111, and the lower end and side edge are formed separately from the hole 131 in the outer body 111 (body 117). Furthermore, an operating lever 161 is arranged in the side-by-side direction of the pair of support columns 163a, that is, between the width direction (circumferential direction) of the outer body 111.

[0120] A pair of support portions 163b support the operating lever 161 at two points via a pair of pillars 163a, connecting the pair of pillars 163a and the operating lever 161 disposed between the pair of pillars 163a. ​​The pair of support portions 163b are integrally formed with the operating lever 161 and the pair of pillars 163a. ​​The support portions 163b are, for example, formed as plates with a rectangular cross-section. The support portions 163b are located at the lower ends of the pillars 163a and are provided on the opposite surfaces of the pair of pillars 163a. ​​In other words, the support portions 163b are integrally formed with the lower ends of the side surfaces of the pillars 163a that face the other pillar. Furthermore, the pair of support portions 163b are located on both sides of the operating lever 161 in the width direction and are positioned at the same height in the height direction. For example, a pair of support portions 163b are provided on the upper end of the second claw portion 161a2 of the operating lever 161.

[0121] A pair of hinges 163c support a pair of supports 163a on the body 117 at two locations, connecting the pair of supports 163a and the inner surface of the hole 131 in the body 117. The pair of hinges 163c are integrally formed with the pair of supports 163a and the inner surface of the hole 131 (i.e., the body 117). The hinges 163c are, for example, formed as plates with a rectangular cross-section. At the height of the operating lever 161 at its central side, the hinges 163c are located on the opposite side of the facing side surfaces of the pair of supports 163a, and on the side surface facing the inner surface of the hole 131. For a specific example, as shown in Figure 29, a pair of hinge portions 163c are provided at the same height position as the upper end of the second claw portion 161a2. More preferably, most of them are provided at the upper end of the second claw portion 161a2, and a number of portions are provided at the lower end of the first claw portion 161a1.

[0122] Furthermore, the support portion 163b is configured, for example, to be at the same vertical position as the hinge portion 163c, or to be partially or entirely lower than the hinge portion 163c, thus offset downwards in the vertical direction from the hinge portion 163c. In this embodiment, the support portion 163b is located lower than the hinge portion 163c, with a portion positioned lower than the hinge portion 163c. That is, in this embodiment, the hinge portion 163c is positioned above the support portion 163b in the vertical direction.

[0123] The operating lever 160, with this structure, is arranged with a predetermined gap from the hole 131, except for the portion that is integrally continuous with the body 117. Next, examples of the dimensions of each part of the operating lever 160 will be explained using Figures 29 to 30.

[0124] Furthermore, in the following description, the width of the first claw portion 161a1 of the claw member 161a of the operating lever 161 is set to A, the thickness of the first claw portion 161a1 is set to B, the width of the second claw portion 161a2 is set to C, and the thickness of the second claw portion 161a2 is set to D. Also, the inclination angle formed by the first claw portion 161a1 with respect to the length direction (axial direction of the outer body 111) of the second claw portion 161a2 is set to E. The width of the operating head 161b of the operating lever 161 is set to F, the thickness of the operating head 161b is set to G, the radius of curvature of the curved surface at the corner between the upper surface and the side surface in the width direction of the operating head 161b is set to R1, the radius of curvature of the curved surface of the edge between the upper surface, side surface and lower surface of the operating head 161b and the outer surface to be operated (i.e. the edge in the outer periphery of the outer surface of the operating head 161b) is set to R2, and the radius of curvature of the curved surface at the corner between the side surface and the lower surface in the width direction of the operating head 161b is set to R3.

[0125] The width of the support 163a is set to H, and the thickness of the support 163a is set to I. Furthermore, the widths A, C, and F of the operating lever 161 and the width H of the support 163a are dimensions along a direction orthogonal to the vertical direction. The width of the support portion 163b is set to J, and the width of the hinge portion 163c is set to K. The widths H and J of the support portion 163b and the hinge portion 163c are dimensions along the vertical direction. Moreover, in the vertical direction, the length from the upper end continuous with the hole 131 of the support 163a to the hinge portion 163c is set to L, the distance from the lower end of the hinge portion 163c to the lower end of the support portion 163b is set to M, the distance from the lower end of the support portion 163b to the locking pawl 162 is set to N, and the distance from the lower end of the support portion 163b to the lower end of the second pawl portion 161a2 (locking pawl 162) is set to O.

[0126] Furthermore, in the operating lever 160, the width H and thickness I of the support 163a, and the width J of the support 163b, primarily form the elasticity of the operating lever 161 and the pair of support 163a. ​​Also, the distance M from the lower end of the hinge 163c to the lower end of the support 163b, and the distance N from the lower end of the support 163b to the locking pawl 162, primarily form the engagement strength of the locking pawl 162 towards the engaged portion 78. Furthermore, if the distance M from the lower end of the hinge 163c to the lower end of the support 163b increases, the engagement force decreases, and the rotational force of the hinge 163c increases.

[0127] Furthermore, in the operating lever 161, the width A of the first claw portion 161a1 and the width C of the second claw portion 161a2, when the locking claw 162 engages with the engaging portion 78, mainly form the strength required to maintain the tension of the connector 10 when it is stretched, that is, to maintain the engagement.

[0128] Furthermore, the width F and thickness G of the operating head 161b, as well as the shape of the operating head 161b, are mainly designed to bear the pressure area and stress concentration of the fingers when the operating lever 161 is operated.

[0129] The dimensions A~N of the operating lever 160 are set, for example, to the range of A=2.0mm~4.0mm, B=1.0mm~2.0mm, C=2.0mm~4.0mm, D=1.0mm~2.0mm, E=15°~40°, F=3.0mm~6.0mm, G=1.0mm~4.0mm, H=1.0mm~2.0mm, I=1.0mm~2.0mm, J=1.0mm~4.0mm, K=1.0mm~3.0mm, L=8.0mm~15.0mm, M=0mm~4.0mm, N=0mm~4.0mm, R1=1.0mm~2.0mm, R2=0.2mm~0.5mm, and R3=0.2mm~0.5mm.

[0130] In a preferred example, the dimensions A to N of the operating lever 160 are set as follows: A=3.0mm, B=1.5mm, C=3.0mm, D=1.5mm, E=25°, F=3.8mm, G=1.9mm, H=1.5mm, I=1.5mm, J=2.0mm, K=2.0mm, L=9.4mm, M=1.0mm, N=2mm, O=4.5mm, R1=1.2mm, R2=0.4mm, and R3=0.4mm.

[0131] As shown in Figure 2, the air bag 152 is housed within the air bag housing 150. The air bag 152 is formed of a thin, easily deformable resin material that allows air to enter and exit the container. The pressure inside the container 1 can be adjusted by deforming the air bag 152. The air bag 152 has a volume equal to or greater than the volume of the syringe barrel 8.

[0132] The air bag 152 is fixed to the end face 148 of the flange 147 of the protrusion 142 of the inner sleeve 140. The air bag 152 is fixed to the end face 148, for example, by adhesive. The air bag 152 communicates with the outer body 111 through the protrusion 142. Furthermore, when not in use, the air bag 152 is stored in the air bag storage part 150 in a folded state. Figure 2 shows the air bag 152 in the folded state.

[0133] Because the end face 148 of the gas needle fixing part 144 of the inner sleeve 140 is inclined vertically, and the upper end 148b is a plane located closer to the center of the air bag storage part 150 than the lower end 148a, the upper end of the folded air bag 152 is located at the center of the air bag storage part 150 compared to the lower end of the folded air bag 152. Therefore, sufficient space is provided between the upper end of the folded air bag 152 and the upper surface 150a of the internal space of the air bag storage part 150.

[0134] Therefore, the upper end of the folded air bag 152 does not contact the upper surface of the internal space of the air bag storage section 150. In other words, the end face 148 of the inner sleeve 140 is formed such that the upper end of the folded air bag 152 is positioned at a position that does not contact the upper surface of the internal space of the air bag storage section 150, that is, positioned closer to the center than the outer periphery of the upper surface.

[0135] As shown in Figure 2, the liquid needle 170 is cylindrical. The upper end of the liquid needle 170 is housed within and fixed to the liquid needle fixing part 116. The liquid needle 170 constitutes part of the liquid flow path L1.

[0136] In this embodiment, the liquid needle 170 is formed into a cylindrical shape with its lower end 171 closed. The lower end 171 is formed into a sharp point. A hole 172 is formed in the lower end of the outer peripheral surface 173 of the liquid needle 170, which communicates the interior and exterior of the liquid needle 170.

[0137] Hole 172 is an example of an opening on the front end side of the liquid needle 170. Hole 172 may, for example, be disposed on the circumferential surface of the lower end of the outer peripheral surface 173. Alternatively, hole 172 may be formed at the lower end of the liquid needle 170, that is, formed at the pointed portion. In short, hole 172 may be disposed on the front end side of the liquid needle 170.

[0138] The gas needle 175 is configured to allow gas flow. The gas needle 175 has the same structure as, for example, the liquid needle 170. In the gas needle 175, structures having the same function as the liquid needle 170 are indicated by the same reference numerals as those in the liquid needle 170, and their descriptions are omitted. The end of the gas needle 175 is fixed to the gas needle fixing portion 144 of the inner sleeve 140.

[0139] The vertical position of the hole 172 of the gas needle 175 is configured at the same vertical position as the hole 172 of the liquid needle 170. Furthermore, in this embodiment, the vertical position of the lower end of the gas needle 175 is configured at the same vertical position as the lower end of the liquid needle 170. Therefore, as described later, the gas needle 175, along with the movement within the outer body 110 of the head sleeve 180, penetrates the needle seal 200 at the same time point as the liquid needle 170. Further, the hole 172 of the gas needle 175 enters the container seal 90 at the same time point as the liquid needle 170.

[0140] The lengths of the liquid needle 170 and the gas needle 175, with the head sleeve 180 positioned at the lower end of its travel range within the outer body 111, allow the lower ends of each of the liquid needle 170 and the gas needle 175 to be positioned within the needle seal 200. That is, their lengths are such that when the holes 172 of each of the liquid needle 170 and the gas needle 175 are positioned within the needle seal 200, these holes 172 are sealed by the needle seal 200.

[0141] As shown in Figures 1 to 3, the head sleeve 180 is formed into a movable cylindrical shape within the outer body 111. As shown in Figures 35 to 40, the head sleeve 180 has a head sleeve body 181 and a second guide protrusion 182. The head sleeve body 181 is, for example, formed into a cylindrical shape that movably fits into the inner circumferential surface of the body 117.

[0142] The head sleeve body 181 is formed in a cylindrical shape that is movably fitted into the inner circumferential surface of the inner sleeve 140. In the lower end of the outer circumferential surface 183 of the head sleeve body 181, a first wrist receiving recess 185 is formed, which can receive a part of the first wrist 231 of the stop sleeve 230 (described later), and a second wrist receiving recess 186 is formed, which can receive a part of the second wrist 232 of the stop sleeve 230 (described later).

[0143] The first wrist receiving recess 185 is formed by recessing a portion of the outer peripheral surface 183 radially inward. The first wrist receiving recess 185 is formed such that its radial depth gradually increases from the lower end to the upper end. For example, a plurality of first wrist receiving recesses 185 are formed. In this embodiment, two first wrist receiving recesses 185 are formed. The two first wrist receiving recesses 185 are arranged 180 degrees apart in the circumferential direction of the head sleeve body 181.

[0144] The second wrist-receiving recess 186 is formed in a shape that recesses a portion of the outer peripheral surface 183 radially inward. The second wrist-receiving recess 186 is formed such that its radial depth gradually increases from the lower end to the upper end. For example, a plurality of second wrist-receiving recesses 186 are formed. In this embodiment, two second wrist-receiving recesses 186 are formed. Each of the two second wrist-receiving recesses 186 is configured to be 90 degrees away from the first wrist-receiving recess 185 in the circumferential direction of the head sleeve body 181.

[0145] Furthermore, a fixing protrusion receiving recess 187 is formed at the lower end of the outer peripheral surface 183 to receive the fixing protrusion 236 of the stop sleeve 230 (described later). The fixing protrusion receiving recess 187 is shaped to recess a portion of the outer peripheral surface 183 radially inward.

[0146] The fixing protrusion receiving recess 187 has: an inlet 188 that opens at the lower end of the head sleeve body 181, allowing the fixing protrusion 236 to pass through when the stop sleeve 230 is fixed to the head sleeve 180; and a retaining portion 189 that extends in the circumferential direction of the head sleeve body 181 to retain the fixing protrusion 236 that has entered through the inlet 188. The retaining portion 189 communicates with the inlet 188 and is formed above the inlet 188. The retaining portion 189 is formed in a shape that is longer than the inlet in the circumferential direction of the head sleeve body 181.

[0147] The fixing protrusion receiving recess 187 thus formed can be, for example, multiple. In this embodiment, four fixing protrusion receiving recesses 187 are formed. The four fixing protrusion receiving recesses 187 are equally spaced apart in the circumferential direction of the head sleeve body 181, and each communicates with either the first wrist receiving recess 185 or the second wrist receiving recess 186.

[0148] The second guide protrusion 182 is formed at the midpoint of the axial direction of the outer peripheral surface 183. The second guide protrusion 182 is housed in the second guide groove 127 of the body portion 117. Furthermore, the second guide protrusion 182 is movable within the second guide groove 127.

[0149] The second reference protrusion 182 may be plural. In this embodiment, two second reference protrusions 182 are formed. Each of the two second reference protrusions 182 is disposed at a position 45 degrees away from the circumference of the head sleeve 180 relative to the first wrist receiving recess 185. The second reference protrusion 182 may be, for example, formed into a rectangular cuboid shape. Furthermore, the two second reference protrusions 182 have different height positions measured from the lower end of the head sleeve body 181. Specifically, one second reference protrusion 182 is disposed on the upper end side of the head sleeve body 181, and the other second reference protrusion 182 is disposed on the lower end side of the head sleeve body.

[0150] As shown in Figures 38 to 40, a partition 191 is formed in the inner circumferential surface 190 of the head sleeve body 181. The partition 191 divides the internal space of the head sleeve body 181 into two parts in the vertical direction. The partition 191 is formed at the midpoint of the inner circumferential surface 190 in the axial direction. The partition 191 is a wall-like structure protruding inward from the inner circumferential surface 190. A hole 192 is formed in the partition 191 for arranging a portion of the needle seal 200. The hole 192 is, for example, formed in an oblong shape.

[0151] In the upper surface 193 of the partition 191, there is a guide portion 194 for the movement of the guide needle seal 200 by the liquid needle 170 and the gas needle 175. The guide portion 194 has: a guide body 195 and a support portion 196 for supporting the guide body 195 on the upper surface 193.

[0152] The guide body 195, for example, is formed into a cuboid shape and has: a hole 197 for arranging a portion of the liquid needle 170 to be fixed to the liquid needle fixing part 116, and a hole 198 for arranging a portion of the gas needle 175 to be fixed to the gas needle fixing part 144. Holes 197 and 198 penetrate the guide body 195.

[0153] Hole 197 is formed to allow the liquid needle 170 to move relative to the head sleeve 180. Specifically, the inner diameter of hole 197 is set to be larger than the outer diameter of liquid needle 170 in terms of the degree of movement of liquid needle 170. Furthermore, an upwardly expanding hole is formed at the upper end of hole 197.

[0154] Hole 198 is formed to allow the gas needle 175 to move relative to the head sleeve 180. Specifically, the inner diameter of hole 198 is set to be larger than the outer diameter of gas needle 175 to allow for greater mobility. Furthermore, an expansion hole is formed at the upper end of hole 198.

[0155] As shown in FIG. 38, support portions 196 are formed on both sides of the hole 192. The support portions 196 are formed into a column shape extending in the axial direction. The support portions 196 are fixed to the guide body 195. The support portions 196 provide a gap between the guide body 195 and the upper surface 193, and the holes 197 and 198 are fixed at positions facing the holes 192 of the partition portion 191 in the axial direction.

[0156] As shown in FIG24, the needle seal 200 is fixed to the hole 192. The needle seal 200 is formed from a resin such as rubber and elastomer, and can, by means of a restoring force, seal the hole formed by the liquid needle 170 and the gas needle 175 in a liquid-tight and gas-tight manner after the liquid needle 170 and the gas needle 175 are removed.

[0157] The needle seal 200, specifically, has: a first portion 201 disposed on the side of the partition 191 outside the hole 192, facing the guide body 195; a second portion 202 disposed inside the hole 192; and a third portion 203 disposed on the opposite side of the partition 191 outside the hole 192, facing the guide body 195.

[0158] Part 1, 201, is formed into a cylindrical shape, for example, an elongated oval, that abuts against the lower surface of the guide body 195 and the two support portions 196. A recess, for example, is formed in the upper surface of Part 1, 201, which serves as a target for inserting the liquid needle 170 and the gas needle 175 during the assembly of the syringe connector 100. Part 1, 201, is shaped such that a cross-section orthogonal to the axial direction is larger than a cross-section orthogonal to the axial direction of Part 2, 202.

[0159] Part 202 is formed into an elongated cylindrical shape that fits into the hole 192. Part 303 is, for example, formed into a cylindrical shape. Part 303 is formed into a shape such that the cross-section orthogonal to the axial direction is larger than the cross-section orthogonal to the axial direction of Part 202. The lower end face 204 of Part 303 forms a sealing surface, which seals the connection between Part 303 and the upper end face 95 by abutting against the upper end face 95 of the container seal 90.

[0160] As shown in Figure 3, the stop sleeve 230 is fixed to the outer peripheral surface of the head sleeve 180. The stop sleeve 230 selectively restricts the movement of the head sleeve 180 relative to the outer body 110 and selectively fixes the head sleeve 180 to the sealing cap 70.

[0161] As shown in Figures 41 to 43, the stop sleeve 230 specifically has: a first wrist 231 that can engage with the locking protrusion 128 of the body 117, a second wrist 232 that can engage with the locking recess of the sealing cap 70, and a connecting portion 233 that connects the first wrist 231 and the second wrist 232.

[0162] As shown in Figures 48 and 49, the first wrist portion 231 is formed in such a way that it can engage with the locking protrusion 128 when the head sleeve 180 is located at its lower end within the outer body 110. The first wrist portion 231 prevents the head sleeve 180 from moving upward within the outer body 110 by engaging with the locking protrusion 128.

[0163] Specifically, as shown in Figures 41, 48, and 49, the first wrist portion 231, when fixed to the outer peripheral surface of the head sleeve 180, is formed as a plate that is longer in the axial direction of the head sleeve 180. A fixing protrusion 236 is formed in the center of the surface 235 facing the head sleeve 180 of the first wrist portion 231. The upper end surface of the first wrist portion 231 is designed to abut against the locking protrusion 128 from below to above. The upper end surface, for example, is a flat surface.

[0164] A first wrist protrusion 237 is formed at the lower end of the surface 235 of the first wrist portion 231. The lower end surface 238 of the first wrist protrusion 237 can abut against the upper end 72a of the conical surface formed on the outer peripheral surface of the sealing cap portion 72 of the sealing cap 70. The lower end surface 238 is an inclined surface that is inclined relative to the axis of the head sleeve 180 when the stopper sleeve 230 is fixed to the head sleeve 180.

[0165] Furthermore, the first wrist portion has a protrusion 237, which, through its lower end face 238, abuts against the upper end face 72a of the conical surface formed on the outer peripheral surface of the sealing cap's middle diameter portion 72. By rotating the first wrist portion 231 so that its upper end face moves toward the head sleeve 180, the engagement between the first wrist portion 231 and the locking protrusion 128 can be released. The first wrist portion protrusion 237 may be multiple. In this embodiment, two first wrist portion protrusions 237 are formed. The first wrist portion 231 may be multiple. In this embodiment, two first wrist portion 231 are formed.

[0166] As shown in Figures 41, 50 and 51, the second wrist portion 232 is formed so that the small diameter portion 73 of the sealing cap is fitted into the head sleeve 180 by engaging with the sealing cap 70, thereby maintaining a tight seal between the upper end face 95 of the container seal 90 and the lower end face 204 of the third part 203 of the needle seal 200.

[0167] Specifically, as shown in FIG41, the second wrist portion 232, when fixed to the outer peripheral surface of the head sleeve 180, forms a plate-like shape that is longer in the axial direction of the head sleeve 180. In the lower end of the face 239 on the head sleeve 180 side of the second wrist portion 232, a second wrist portion protrusion 240 is formed that can engage with the locking recess 77 of the sealing cap 70.

[0168] The upper surface 241 of the second wrist protrusion 240 can engage with the locking recess 77 of the sealing cap 70. The lower end face 242 of the second wrist protrusion 240 forms an inclined surface that is inclined with respect to the axis of the head sleeve 180 when the stop sleeve 230 is fixed to the head sleeve 180.

[0169] A fixing protrusion 236 is formed in the center of the surface 239. On the opposite side of the head sleeve 180 of the second wrist 232, a protrusion 129 for locking release is formed, which can abut against the torso 117.

[0170] Specifically, the second wrist portion 232 has a generally trapezoidal cross-section that protrudes outward from the central portion of the circumferential direction of the surface 243. The central portion 243a of the circumferential direction of the surface 243 is formed to abut against the locking release protrusion 129. By abutting against the locking release protrusion 129, the second wrist portion 232 is rotated away from the head sleeve 180 degrees, and the second wrist protrusion 240 is moved towards the outside of the locking recess 77, thereby releasing the engagement between the second wrist protrusion 240 and the locking recess 77. Furthermore, a plurality of second wrist portions 232 are formed, for example. In this embodiment, two second wrist portions 232 are formed.

[0171] The second wrist 232 thus formed, with the first wrist 231 engaged with the locking protrusion 128 under the head sleeve 180 disposed inside the outer body 111 as shown in FIG. 50, is rotated until the middle part (the most protruding part in the radial direction inside the body 117 of the body 117) of the locking release protrusion 129 abuts against the upper part of the center part 243a of the surface 243 in the axial direction of the body 117 of the locking release protrusion 129, until the engagement between the second wrist protrusion 240 and the locking recess 77 of the sealing cap 70 is released.

[0172] Furthermore, by moving the stop sleeve 230 upward, the second wrist 232 moves upward relative to the locking release protrusion 129, and the middle part of the most prominent part of the locking release protrusion 129 abuts against the lower end of the center part 243a of the surface 243 of the second wrist 232.

[0173] The second wrist 232 is formed to rotate until the second wrist protrusion 240 engages with the locking recess 77 of the sealing cap 70 by abutting against the locking release protrusion 129 at its lower end and by the restoring force of the connecting portion 233.

[0174] The connecting portion 233 connects the first wrist portion 231 and the second wrist portion 232. The connecting portion 233 is flexible, allowing the first wrist portion 231 and the second wrist portion 232 to be rotatably formed by twisting. When no external force is applied to the first wrist portion 231, the connecting portion 233 is positioned to engage the first wrist portion 231 with the locking protrusion 128. When no external force is applied to the second wrist portion 232, the connecting portion 233 is positioned to engage the second wrist portion 232 with the locking recess 77 of the sealing cap 70.

[0175] The stop sleeve 230 with this structure forms an annular shape in which the first wrist 231 and the second wrist 232 are alternately arranged in the circumferential direction. The first wrist 231 and the second wrist 232 are separately arranged in the circumferential direction.

[0176] When the fixing protrusion 236 is inserted into the retaining portion 189 of the head sleeve body 181 through the inlet 188 of the fixing protrusion receiving recess 187 in the axial direction of the head sleeve body 181, the stop sleeve 230 is rotated by a predetermined angle in the circumferential direction. Because the fixing protrusion 236 is rotated to a position that is not parallel to the inlet 188, it will not fall off the inlet 188. Therefore, the stop sleeve 230 is fixed to the head sleeve 180.

[0177] As described above, with the fixing protrusion 236 housed in the retaining portion 189, the first wrist portion 231 faces the first wrist portion receiving recess 185, and the second wrist portion 232 faces the second wrist portion receiving recess 186.

[0178] By aligning the first wrist portion 231 with the first wrist receiving recess 185, a portion of the upper part of the first wrist portion 231 can be stored within the first wrist receiving recess 185 during rotation. That is, since the first wrist receiving recess 185 becomes part of the movement space during the rotation of the first wrist portion 231, the first wrist portion 231 can be rotated until the engagement between its upper end and the locking protrusion 128 is released. By aligning the second wrist portion 232 with the second wrist receiving recess 186, a portion of the upper part of the second wrist portion 232 can be stored within the second wrist receiving recess 186 during rotation. That is, since the second wrist receiving recess 186 becomes part of the movement space during the rotation of the second wrist portion 232, the second wrist portion 232 can be rotated until the engagement between the second wrist protrusion 240 and the locking recess 77 is released.

[0179] As shown in FIG. 2, the pushing member 250 is housed within the outer body 111, forming a configuration that can push the head sleeve 180 downwards. Specifically, the pushing member 250 is housed above the partition 191 within the head sleeve 180. The pushing member 250 is, for example, a coil spring. One end of the pushing member 250 abuts against the inner sleeve 140. The other end of the pushing member 250 abuts against the partition 191. The pushing member 250 has a structure that is in a compressed state when the head sleeve 180 is located at the lowermost position of the movement range of the outer body 111.

[0180] Furthermore, a pushing portion 118 is formed in the torso 117 of the outer body 111. The pushing portion 118 is configured to press the first wrist 231 of the stop sleeve 230, which engages with the locking protrusion 128, in the engagement direction of the locking protrusion 128. That is, the pushing portion 118 is configured to forcefully engage the first wrist 231 and the locking protrusion 128 by pushing the first wrist 231.

[0181] The pushing part 118, specifically, is the edge of the hole 117a provided in the torso 117, the hole 117a being formed at a position facing the first wrist 231 of the stop sleeve 230 which is positioned at the lower end.

[0182] Next, an example of the operation of connecting the container connector 20 to the container 1 will be described using Figure 10. In Figure 10, the base 41, the needle member 60, and the sealing cap 70 of the container connector 20 are omitted.

[0183] First, the operator places container 1, as shown in Figure 10, on workbench 9. While placing container 1 on workbench 9, the operator abuts the front end of needle 62 of needle member 60 against the center of the upper surface of plug 6 of container 1. While abutting the front end of needle 62 against the center of the upper surface of plug 6, the operator pushes needle 62 into container 1 by moving container connector 20 towards container 1.

[0184] When the needle 62 is pushed into the container 1 by a predetermined amount, the guide surfaces 54 of the two engaging parts 43 of the container connector 20 will contact the outer periphery of the flange 5 of the container 1. By forming the guide surfaces 54 into a V-shape, the guide surfaces 54 can abut against the flange 5 at two points. Therefore, the container connector 20 abuts against the container 1 at four points.

[0185] If the operator contacts the guide surfaces 54 of each of the two engaging parts 43 with the flange 5 of the container 1, the container connector 20 can be pushed further downward. As the container connector 20 is pushed further downward, the two engaging parts 43, by bearing external force in a direction away from the flange 5, cause the two wrists 42 to bend respectively, and by expanding the two engaging parts 43, the abutting parts 53 of each of the two engaging parts 43 move the outer peripheral surface of the flange 5 of the container 1 downward.

[0186] If the container connector 20 is pushed further downward and moved to a position where the abutment portions 53 of each of the two engaging portions 43 face the neck 4 of the container 1, then each of the two engaging portions 43 is moved towards the neck 4 by the restoring force of the wrist 42, causing the abutment portions 53 to abut against the neck 4. That is, the neck 4 is engaged by the abutment portions 53, which are supported at four points, abutting against the neck 4. Through these steps, the container connector 20 is connected to the container.

[0187] Next, Figures 44 to 56 will be used to illustrate the flow of movement of each structure during the connection and separation of the syringe connector 100 and the container connector 20. Also, in Figures 44 to 56, some parts of the structures are omitted or simplified.

[0188] First, the connection between the sealing cap 70 and the head sleeve 180 will be explained. Then, using Figures 44, 45, 48 to 54, the operation of connecting the syringe connector 100 and the container connector 20 to form the liquid flow path L1 and the gas flow path L2 will be explained.

[0189] As shown in steps ST11 of FIG44 and FIG48, when the syringe connector 100 is not connected to the container connector 20, the head sleeve 180 is located at its lower end within the outer body 110. Further, the first wrist 231 of the stop sleeve 230 engages with the locking protrusion 128. Further, the second wrist 232 of the stop sleeve 230 abuts against the locking release protrusion 129 of the body 117 and rotates until the engagement between the second wrist protrusion 240 and the locking recess 77 of the sealing cap 70 is released. A portion of the second wrist 232 is housed within the second wrist housing recess 186 of the head sleeve 180. And, at this time, as shown in step ST11 of FIG44, the locking claw 162, for example, is positioned between the first wrist 231 and the second wrist 232. At this time, the locking claw 162 can either come into contact with or separate from the outer peripheral surface of the head sleeve 180.

[0190] Furthermore, the portions formed by the holes 172 of the liquid needle 170 and the gas needle 175 are disposed within the needle seal 200. That is, the holes 172 of the liquid needle 170 and the gas needle 175 are sealed both airtightly and liquidtightly by the needle seal 200.

[0191] Next, as shown in steps ST12 of Figure 44, Figures 49 and 50, the small-diameter portion 73 of the sealing cap 70 is inserted into the head sleeve 180. Until the upper end face 95 of the container seal 90 is in close contact with the lower end face 204 of the needle seal 200, the lower end face 238 of the protrusion 237 of the first wrist portion 231 of the stop sleeve 230 abuts against the upper end 72a of the conical surface of the outer circumferential surface of the sealing cap's middle diameter portion 72. The curved upper end face 95 of the container seal 90 is deformed and in close contact with the lower end face 204 of the needle seal 200 by being pressed towards it. Furthermore, as shown in step ST12 of Figure 44, the positional relationship between the locking claw 162 and the head sleeve 180 remains unchanged from step ST11 onwards.

[0192] If the syringe connector 100 is further lowered from this state, as shown in FIG49, the first wrist portion 237 is guided upward at its upper end 72a and moved radially outward. The first wrist portion 231 rotates as the first wrist portion 237 moves radially outward. With the upper end face 95 of the container seal 90 and the lower end face 204 of the needle seal 200 in a closed state, the first wrist portion 231 is guided towards its upper end 72a forming a conical surface and rotates until the locking protrusion 128 is released. At this time, a portion of the first wrist portion 231 is housed in the first wrist portion receiving recess 185 of the head sleeve 180. The head sleeve 180, by releasing the engagement of the first wrist portion 231 and the locking protrusion 128, becomes movable upward within the outer body body 111.

[0193] At this time, as shown in FIG50, if the syringe connector 100 is lowered until the upper end face 95 of the container seal 90 is in close contact with the lower end face 204 of the needle seal 200, the protrusion 240 of the second wrist 232 faces the locking recess 77.

[0194] If the syringe connector 100 is lowered further, the sealing cap 70 and the head sleeve 180 move upward integrally within the outer body 111. As the head sleeve 180 moves upward within the outer body 111, the liquid needle 170 and the gas needle 175 move downward relative to the needle seal 200.

[0195] If the sealing cap 70 and the head sleeve 180 move upward as a whole within the outer body 111, the operating lever 160, as shown in step ST13 of FIG44, moves downward relative to the sealing cap 70 and the head sleeve 180, and the lower surface 162b of the locking claw 162 abuts against the connecting part 233.

[0196] If the syringe connector 100 is lowered further, the container connector 20 and the head sleeve 180 are moved further upward within the outer body 111, causing the liquid needle 170 and the gas needle 175 to pierce the container seal 90 through the needle seal 200. Furthermore, the liquid needle 170 and the container seal 90 are sealed by tightly fitting the container seal 90 with the liquid needle 170, achieving both liquid and gas tightness. Similarly, the gas needle 175 and the container seal 90 are sealed by tightly fitting the container seal 90 with the gas needle 175. Further, as shown in step ST14 of FIG45, the locking claw 162, because its lower surface 162b is inclined in the vertical direction, allows the operating lever 161 to rotate away from the head sleeve 180 via the abutting connecting portion 233 and the hinge portion 163c. Specifically, the operating lever 161 rotates around the hinge 163c such that the first claw portion 161a1 and the operating head 161b approach the head sleeve 180, while the second claw portion 161a2 and the locking claw 162 move away from the head sleeve 180. As a result, the locking claw 162 climbs up the connecting portion 233.

[0197] With the liquid needle 170 and gas needle 175 penetrating the needle seal 200, the second wrist 232 is moved upward toward the locking release protrusion 129. During this upward movement of the second wrist 232 toward the locking release protrusion 129, the contact position of the most prominent midpoint of the outermost part of the outer body body 111 of the locking release protrusion 129 in the radial direction in the center portion 243a of the surface 243 of the second wrist 232 moves downward. By moving the contact position downward, the pushing force that forces the second wrist protrusion 240 toward the outermost part of the outer body body 111 in the radial direction can be reduced.

[0198] With the liquid needle 170 and gas needle 175 penetrating the needle seal 200, as shown in FIG51, the second wrist 232 is released from the radial inward push generated by the locking release protrusion 129 of the body 117. By the elastic force (restoring force) of the connecting part 233 and the second wrist protrusion 240, the lower end of the second wrist 232 is rotated to abut against the ground, and the second wrist protrusion 240 can then engage with the locking recess 77. That is, the stop sleeve 230 and the sealing cap 70 are fixed to each other before the liquid needle 170 penetrates the needle seal 200.

[0199] As shown in Figure 51, with the second wrist portion 232 engaged with the locking recess 77 by the protrusion 240, as shown in Figure 52, the first wrist portion 231 is maintained in contact with the outer peripheral surface of the sealing cap portion 72 of the sealing cap 70 by the protrusion 237.

[0200] If the syringe connector 100 is lowered further, as shown in FIG2, the liquid needle 170 and the gas needle 175 pass through the container seal 90. The hole 172 of the liquid needle 170 is disposed in the liquid flow path component L3, and the hole 172 of the gas needle 175 is disposed in the gas flow path component L4.

[0201] By placing the hole 172 of the liquid needle 170 within L3, the liquid flow path component L3 of the container connector 20 and the liquid needle 170 are connected. A liquid flow path L1 is formed by connecting the liquid flow path component L3 and the liquid needle 170. By placing the hole 172 of the gas needle 175 within L4, the gas flow path component L4 of the container connector 20 and the gas needle 175 are connected. A gas flow path L2 is formed by connecting the gas flow path component L4 and the gas needle 175. At this time, as shown in step ST15 of FIG45, the locking claw 162 climbs onto the engaging portion 78 and is positioned on the outer peripheral surface of the engaging portion 78.

[0202] As the syringe connector 100 is further lowered, as shown in Figures 53 and 54, the first guide protrusion 75 abuts against the upper end of the first guide groove 126. Furthermore, the second guide protrusion 182 abuts against the upper end of the second guide groove 127. These abutments restrict the movement of the head sleeve 180 and the container connector 20 within the outer body 111. That is, the syringe connector 100 is lowered until it reaches the bottom. And, as shown in step ST16 of Figure 45, the locking claw 162 is positioned below the engaged portion 78 in the vertical direction, beyond the engaged portion 78, such that the first claw portion 161a1 and the operating head 161b are separated from the head sleeve 180. This causes the operating lever 161 to rotate around the hinge portion 163c, causing the upper surface 162a of the locking claw 162 to engage with the lower surface 79 of the engaged portion 78.

[0203] The operator identifies the formation of the liquid flow path L1 and the gas flow path L2 by confirming that the syringe connector 100 has descended to the bottom. Once the syringe connector 100 has descended to the bottom, the operator can draw the medication from the container 1 by operating the syringe 7. The medication can then be moved from the container 1 to the syringe 7 through the liquid flow path L1.

[0204] Next, the operation of separating the container connector 20 from the syringe connector 100 will be described. As shown in step ST21 of FIG46, when separating the connected syringe connector 100 and container connector 20, the operator presses the operating head 161b of the operating lever 160 as shown in step ST22 of FIG46. This causes the operating lever 161 to rotate around the hinge 163c in the direction of separation from the sealing cap 70, thereby releasing the engagement between the upper surface 162a of the locking pawl 162 and the lower surface 79 of the engaged portion 78 of the sealing cap 70. With the engagement between the locking pawl 162 and the engaged portion 78 released, as shown in step ST22 of FIG46, the sealing cap 70 and the head sleeve 180 move downward relative to the outer body 111 by the pushing member 250.

[0205] Next, the operator releases the pressure on the operating head 161b and pulls up the syringe connector 100. At this time, the locking claw 162, as shown in steps ST22 and ST23 of FIG46, contacts the outer peripheral surface of the engaged portion 78 and the connecting portion 233. Furthermore, the head sleeve 180 is fixed to the sealing cap 70 by the second wrist 232 of the stop sleeve 230. Therefore, when the syringe connector 100 is pulled up, the outer body 110, the liquid needle 170, and the gas needle 175 move upward relative to the head sleeve 180 and the needle seal 200.

[0206] For the head sleeve 180 and needle seal 200, by moving the outer body 110, the liquid needle 170, and the gas needle 175 upward, the liquid needle 170 and the gas needle 175 can move upward within the container seal 90. Furthermore, as shown in step ST24 of FIG47, when the locking pawl 162 passes the connecting portion 233, the operating lever 161 rotates the locking pawl 162 towards the head sleeve 180, centered on the hinge portion 163c.

[0207] If the syringe connector 100 is pulled up a specified distance, the liquid needle 170 and the gas needle 175 are pulled out from the container seal 90. The container seal 90, through its restoring force, seals the holes formed by the liquid needle 170 and the gas needle 175 in a liquid-tight and gas-tight manner. Furthermore, the hole 172 of the liquid needle 170 is sealed by the needle seal 200. The hole 172 of the gas needle 175 is sealed by the needle seal 200. Also, as shown in step ST25 of FIG47, although the locking pawl 162 moves relative to the head sleeve 180 in the vertical direction, the operating lever 161 does not rotate around the hinge 163c.

[0208] After the liquid needle 170 and the gas needle 175 are removed from the container seal 90, if the syringe connector 100 is pulled up a predetermined distance further, the second wrist 232 is rotated by the locking release protrusion 129 of the body 117. The second wrist protrusion 240 of the second wrist 232 moves radially outward from the locking recess 77, and the engagement between the second wrist protrusion 240 and the locking recess 77 is released. That is, the fixation of the stop sleeve 230 and the sealing cap 70 is released.

[0209] In this state, the portions forming the holes 172 of the liquid needle 170 and the portions forming the holes 172 of the gas needle 175 are housed within the needle seal 200, and both holes 172 are sealed by the needle seal 200. The needle seal 200, through its restoring force, seals the holes formed by the liquid needle 170 and the gas needle 175 in a liquid-tight and gas-tight manner.

[0210] Furthermore, the holes 172 of the liquid needle 170 and the gas needle 175 extend from the container seal 90 at the same time point and are housed within the needle seal 200 at the same time point.

[0211] Thus, the liquid flow path L1 is disconnected, the liquid needle 170 that forms part of the syringe connector 100 in the liquid flow path L1 is sealed, and the liquid flow path component L3 that forms part of the container connector 20 in the liquid flow path L1 is sealed.

[0212] Similarly, the gas flow path L2 is disconnected, the gas needle 175 that forms part of the syringe connector 100 in the gas flow path L2 is sealed, and the gas flow path component L4 that forms part of the container connector 20 in the gas flow path L2 is sealed.

[0213] After the sealing cap 70 and the head sleeve 180 are released, if the syringe connector 100 is pulled up further, the sealing cap 70 moves downward relative to the first wrist 231 of the stop sleeve 230. By moving the sealing cap 70 downward relative to the first wrist 231, the pushing force exerted by the outer peripheral surface of the sealing cap 70 on the first wrist 231 is released. Also, as shown in step ST26 of FIG47, the operating lever 161 does not rotate about the hinge 163c.

[0214] If the first wrist 231 is released from the push from the outer peripheral surface of the sealing cap 70, it rotates due to the elasticity (restoring force) of the connecting part 233. By rotating, the upper end of the first wrist 231 is positioned below the locking protrusion 128. That is, the first wrist 231 is engaged with the locking protrusion 128.

[0215] Because the first wrist 231 engages with the locking protrusion 128, the head sleeve 180 is prevented from moving in the following states: the portion of the liquid flow path L1 formed within the syringe connector 100, namely the liquid needle 170, is sealed, i.e., the hole 172 is sealed by the needle seal 200; and the portion of the gas flow path L2 formed within the syringe connector 100, namely the gas needle 175, is sealed, i.e., the hole 172 is sealed by the needle seal 200.

[0216] Furthermore, in this embodiment, the syringe connector 100 and the container connector 20 can also be separated while the operating lever 161 is pressed. Next, an example of separating the syringe connector 100 and the container connector 20 while the operating lever 161 is pressed will be described using Figures 55 and 56.

[0217] As shown in step ST31 of Figure 55, with the syringe connector 100 and container connector 20 connected, as shown in step ST32, the operator presses the operating head 161b toward the inside of the outer body 111. The operating lever 161 rotates around the hinge 163c by pressing the operating head 161b toward the inside of the outer body 111. As a result, as shown in step ST32, the locking pawl 162 separates from the engaged portion 78, and the engagement between the locking pawl 162 and the engaged portion 78 is released. Furthermore, by the pushing member 250, the sealing cap 70 and the head sleeve 180 move downwards relative to the outer body 111.

[0218] Next, while maintaining the pressed state of the operating head 161b, the operator pulls up the syringe connector 100. The locking claw 162 is maintained in a radially separated state from the engaged portion 78 and the connecting portion 233, as shown in steps ST33-ST35 of Figures 55 and 56. While maintaining the locking claw 162 separated from the sealing cap 70 and the head sleeve 180, the sealing cap 70 and the head sleeve 180 are moved, thereby separating the syringe connector 100 and the container connector 20. Furthermore, as shown in step ST36 of Figure 56, after the syringe connector 100 and the container connector 20 are separated, if the operator releases the pressure on the operating head 161b, the operating lever 161 rotates about the hinge portion 163c in a direction that brings the locking claw 162 closer to the head sleeve 180 and moves the operating head 161b away from the head sleeve 180.

[0219] The operating lever 160 of the syringe connector 100 with this structure is designed such that the operating lever 161 is supported by a pair of supports 163a and is rotatable around a pair of hinges 163c integrally formed on the supports 163a and the body 117. Therefore, when the operating head 161b is operated, because the operating lever 161 rotates around the hinges 163c, the locking claw 162 moves outward, i.e., away from the head sleeve 180, so the engagement with the engaged portion 78 can be reliably released.

[0220] To separate the syringe connector 100 and the container connector 20, first press the operating head 161b once to separate the locking claw 162 and the engaged portion 78. Then, after releasing the pressure of the operating head 161b, move the syringe connector 100 and the container connector 20 relative to each other in the separation direction. Alternatively, to separate the syringe connector 100 and the container connector 20, first press the operating head 161b to separate the operating locking claw 162 and the engaged portion 78, and then, while maintaining the pressed state of the operating head 161b, move the syringe connector 100 and the container connector 20 relative to each other in the separation direction. Thus, either the first operation of pressing the operating head 161b once and then releasing the press, or the second operation of maintaining the pressed state of the operating head 161b, can be used to separate the syringe connector 100 and the container connector 20. Thus, because the syringe connector 100 can be separated by two assumed operating methods of the operating lever 160 that is pressed, the operator will not misoperate. Therefore, because the syringe connector 100 prevents misoperation, it also prevents damage caused by misoperation.

[0221] In this operating lever 160, a pair of support columns 163a and a pair of hinge portions 163c are continuous with the body portion 117. Therefore, when the outer body component 132 is formed by injection molding, in the molding die, the resin material around the hole 131 flows toward the operating lever 160 from four locations as shown by the arrow in FIG. 28. Specifically, the resin material flows through a pair of support columns 163a and a pair of hinge portions 163c around the hole 131, and as shown by the arrows in FIGS. 28 and 30, flows toward the operating head 161b that forms the end. As described above, even when resin molding is performed, the resin material easily flows toward the operating lever 160, preventing molding defects from occurring.

[0222] Moreover, for the operating lever 160, by making the corner portions and ridge portions of the operating head 161b into curved surfaces and forming them within the above-described dimensional range, a surface can be formed at the portion that comes into contact with the finger when pressed. Specifically, the radius of curvature R1 of the corner between the upper surface and the side surface of the operating head 161b is formed to be larger than the radius of curvature R2 of the ridge between the upper surface, side surface, and lower surface of the operating head 161b and the outer surface to be operated, and the radius of curvature R3 of the corner between the lower surface and the side surface, and the radius of curvature R1 is formed to be smaller than half of the width F of the operating head 161b (R1 < F / 2). Thus, when the operating head 161b is pressed by the finger, since partial pressure can be prevented from being applied to the finger, finger pain can be prevented when the pressing operation of the operating head 161b is repeatedly performed.

[0223] As described above, according to the syringe connector 100 of the present embodiment, when separating the syringe connector 100 and the container connector 20, since either the first operation of releasing after pressing the operating lever 160 or the second operation of maintaining the pressing of the operating lever 160 can be performed, misoperation of the operating lever 160 does not occur, preventing breakage.

[0224] Furthermore, the present invention is not limited to the above-described embodiment. For example, in the above example, although it was described that the container connector 20 is connected to the container 1 of the vial and the syringe connector 100 has a structure including an air bag 152 and a gas flow path L2, it is not limited thereto.

[0225] Next, the container connector 20A of another embodiment of the present invention will be described using FIGS. 57 and 58. Also, structures having the same functions as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment and the description thereof is omitted.

[0226] Figure 57 is a perspective view showing the structure of the container connector 20A. Figure 58 is a cross-sectional view showing the structure of the container connector 20A. The container connector 20A can be fixed to a syringe connector that does not have related structures such as the air bag 152 and the gas flow path L2. One example of this syringe connector has the following structure, in which the following is omitted from the syringe connector 100 described in the first embodiment: air bag 152, air bag storage part 150, gas needle 175, and inner sleeve 140.

[0227] As shown in Figures 57 and 58, the container connector 20A includes: a needle component 60A, a sealing cap 70, and a container seal 90.

[0228] The needle component 60A includes: a needle component base 61A, a needle portion 62A, and a tube connection portion 300. The needle portion 62A of the needle component 60A is connected to an infusion bag, for example, by being inserted into an infusion bag.

[0229] The needle component base 61A is configured, for example, as a gas flow path component L4 without the needle component base 61 described in the first embodiment. The needle portion 62A extends in a direction inclined relative to the needle component base 61A, specifically orthogonal to it. The needle portion 62A internally includes a liquid flow path component L3 and a gas flow path component L4.

[0230] A tube connector 300 extends from the needle portion 62A. The tube connector 300 is a tube used to connect to an infusion tube, etc. Specifically, it is fixed to the tube, and the tube connector 300 is connected to the tube by inserting a needle with an internal flow path into the tube connector 300. The tube connector 300 is cylindrical and communicates with the gas flow path member portion L4. A plug 301 is provided in the opening of the tube connector 300 to close the opening. The plug 301 allows the needle of the tube to be inserted.

[0231] Plug 301 is formed from resins such as rubber and elastomers and is flexible. Furthermore, plug 301 can seal holes formed by the insertion of a needle placed in the tube in a liquid-tight and airtight manner after the needle is removed by a restoring force.

[0232] This container connector 20A is also fixed to the syringe connector by the same operating lever 160 as the syringe connector 100 of the above embodiment.

[0233] Furthermore, in the above example, although the operating lever 160 illustrates one example of a structure provided in the syringe connector 100, it is not limited to this. The operating lever 160 may also be a structure provided in the outer body (outer body body) of a first member with an opening, so that the second member inserted into the first member and the locking claw 162 engage. In other words, the syringe connector 100 is an example of the first member, and the container connectors 20 and 20A are examples of the second member. That is, if the operating lever 160 engages with the engaging part 78, the operating lever 160 can be applied to the outer body (outer body body) of various members. Thus, the operating lever 160 may also be a structure in which, by pressing the operating head 161b, the operating lever 161, supported by a pair of support parts 163b on a pair of pillars 163a, rotates around the hinge part 163c, separating the locking claw 162 provided at the opposite end of the operating head 161b from the engaging part 78.

[0234] Furthermore, while the above examples illustrate the optimal example of the operating head 161b of the operating lever 160 that can suppress finger pain during pressing, the shape of the operating head 161b is not limited to this. For example, in the modified example shown in FIG59, the operating head 161b may not have a straight portion on its upper surface, but may instead have a curved structure formed by a radius of curvature on its upper surface. Also, in the modified example shown in FIG60, the radius of curvature R1 of the corner between the upper surface and the side surface, and the radius of curvature R3 of the corner between the lower surface and the side surface may be the same, and the edges between the outer surface and the side surface may be curved by a predetermined radius of curvature, and the edges between the outer surface and the upper surface, and the edges between the outer surface and the lower surface may form non-circular corners. Furthermore, in the modified example shown in FIG61, the thickness of the operating head 161b may exceed the aforementioned range. And, in the modified examples shown in FIG62 and FIG63, the outer surface may be curved. Furthermore, as shown in Figures 64 and 65, the operating head 161b is formed across most of the first claw portion 161a1, and may also be triangular in shape when viewed from the side. However, in order to achieve the effect of not causing pain to the fingers during operation, the operating head 161b shown in Figures 29 and 30 is preferred, as described in the above embodiment.

[0235] Furthermore, although the example above illustrates that the operating lever 160 is configured in a vertical direction, it is not limited to this. That is, the configuration of the operating lever 160 can also be replaced by setting the vertical direction as one direction, with the upper part of the operating lever 160 located on one side of that direction and the lower part of the operating lever 160 located on the other side of that direction.

[0236] Furthermore, the present invention is not limited to the embodiments described above, and various modifications can be made to the embodiments without departing from their essence. Moreover, the embodiments can be suitably combined, and the combined effect can be obtained. Furthermore, the above embodiments include various inventions, and various inventions can be extracted by selecting and combining from the disclosed plurality of constituent elements. For example, even if some constituent elements are removed from all the constituent elements shown in the embodiments, as long as the problem can be solved and the effect can be obtained, the removed constituent element can still be extracted as an invention.

[0237] 2:Torch 5: Flange 6:bolt 10: Connecting devices 20: Container connector 20A: Container connector 30: Container fixing part 40:Container fixing part body 41: Base 42: Wrist 43: Card-connecting section 44: Kong 45: Arc section 46: Rectangular section 47: Claw engagement 48: Base 49:Claws 50: First wrist 51: Return to Section 52: Second wrist 53:Butt part 54: Guiding surface 60, 60A: Needle component 61, 61A: Base of needle component 62: Needle 62A: Needle 63: Flange 64: Protruding part 65: Column 66: Anti-rotation part 67:Butt part 70: Sealing cap 71: Large diameter part for sealing cap 72: Sealing cap with intermediate diameter 72a: Upper end 73: Small diameter part for sealing cap 73a: Opening 73b: Edge section 73c: Lower surface 75: First guideline reference protrusion 76: Inner circumferential surface 77: Locking recess 78: The part that was stuck 79: Lower surface 81: Ditch 82: Stuck face 90: Container seal 93:Large diameter part of seal 94: Small diameter section of the seal 95: Top surface 96: 1st fitting part 97: 2nd chimeric part 100: Syringe connector 110: Peripheral Body 111: Peripheral Body 114: Top wall part 115: Syringe fixing part 116: Liquid needle fixing part 117:Torch 117a: Hole 117b: Inner circumferential surface 118: Pushing Department 120: Syringe fixing part body 121: Protrusion for syringe fixing part 122: Needle support 123: Protrusion 123a: protrusion 124: Base 124a: Ratchet 126: First guiding trench 127: Second guide trench 128: Locking protrusion 129: Lockout Release Protrusion 131: Kong 132: Components constituting the outer perimeter 134: Sales 135: Kong 140: Inner sleeve 141: Inner sleeve body 142: Protruding part 143: Kong 144: Gas needle fixing part 145: Support section 146: Fixing part 147: Flange 148: End face 148a: Lower end 148b: Upper end 150: Airbag Storage Section 150a: Top surface 150b: Top surface 151: Connecting Part 152: Airbag 160: Control lever 161: Control lever 161a: Claw component 161a1: First claw 161a2: Second claw 161b: Operating head 161b2: Second claw 162: Locking Claw 162a: Upper surface 162b: Lower surface 163: Control lever hinge 163a: Pillar 163b: Support section 163c: Hinge 170: Liquid needle 171: Lower end 172: Kong 173: Outer Peripheral Surface 175: Gas needle 180: Headgear 181: Head sleeve body 182: Second guideline reference protrusion 183: Outer Peripheral Surface 185: First wrist storage recess 186: Second wrist storage recess 187: Recessed section for securing protrusions 188: Entrance Department 189: Maintaining Department 190: Inner circumference 191: Divider 192: Kong 193: Upper surface 194: Guiding Department 195: Guiding Body 196: Support section 197: Kong 198: Kong 200: Needle seal 201: Part 1 202: Part 2 203: Part 3 204: Lower end face 230: Stopper sleeve 231: First wrist 232: Second wrist 233: Connecting Part 235: Noodles 236: Fixing protrusion 237: The first wrist is marked with a protrusion. 238: Lower end face 239: Noodles 240: The second wrist is marked with a protrusion. 241: Upper surface 242: Lower end face 243: Noodles 243a: Central Department 250: Pushing component 300: Pipe connection part 301:Tie L1: Liquid flow path L2: Gas flow path L3: Liquid flow path component section L4: Gas flow path component L5: Gas Flow Path Components A: Width B: Thickness C: Width D: Thickness E: Tilt Angle F: Width G: Thickness H: Width I: Thickness J: Width K: Width L: Length M: Distance N: Distance O: Distance R1~R3: Radius of curvature

Claims

1. An operating lever disposed within a hole formed in the outer body of a syringe connector, engaging with a locking portion of a container connector inserted into the syringe connector, comprising: a pair of pillars arranged side-by-side in a direction orthogonal to a certain direction, one end of which is integrally formed with the outer body; a claw member comprising: a first claw portion inclined toward the outer side of the outer body in the certain direction, and a second claw portion integrally formed with the first claw portion along the certain direction; an operating head integrally formed at the end of the first claw portion and located on the outer side of the end of the outer body; a locking claw integrally formed at the end of the second claw portion and located on the inner side of the outer body of the end of the second claw portion, the locking claw being capable of engaging with the locking portion; a pair of support portions integrally formed on the pair of pillars and the claw member; and a pair of hinge portions integrally formed on the other end side of the outer body and the side surface facing the outer body.

2. As in request item 1, the operating lever, where, In the aforementioned direction, the aforementioned support portion and the aforementioned hinge portion are arranged in the same position, or the aforementioned hinge portion is arranged on the side of the aforementioned support portion that is closer to the aforementioned direction.

3. As in request item 2, the operating lever, where, In the aforementioned direction, the aforementioned operating head is positioned on one side further away from the aforementioned hinge than the aforementioned hinge portion, and the aforementioned locking pawl is positioned on the other side further away from the aforementioned hinge portion than the aforementioned hinge portion.

4. As in request item 3, the operating lever, where, The aforementioned hinge portion, in the aforementioned direction, is disposed at the end of the aforementioned second claw portion on the side of the aforementioned first claw portion.

5. As in request item 1, the operating lever, where, The aforementioned operating head is formed into a rectangular shape with a longer side in the aforementioned direction. The corner between the first surface on one side of the aforementioned direction and the second surface orthogonal to the aforementioned direction is formed into a curved surface. The corner between the third surface on the other side of the aforementioned direction and the aforementioned second surface is formed into a curved surface. The radius of curvature of the corner formed by the aforementioned first surface and the aforementioned second surface is larger than the radius of curvature of the corner formed by the aforementioned second surface and the aforementioned third surface, and smaller than half of the width orthogonal to the aforementioned direction of the aforementioned operating head.

6. As in request item 5, the operating lever, where, In the aforementioned operating head, the edges between the aforementioned first surface, the aforementioned second surface, and the aforementioned third surface and the outer surface are curved surfaces.

7. A syringe connector, wherein a container connector having a container-side flow path member portion inside and a locking portion on an outer surface is fixed to a container, the syringe connector being used in a syringe and connected to the container connector, comprising: a body portion forming a cylindrical shape into which the container connector can be inserted from one end, and having a hole formed at a position facing the container connector in the radial direction; a syringe-side flow path member portion housed within the body portion, wherein the container connector communicates with the container-side flow path member portion when inserted into the body portion; and an operating lever, as claimed in any one of claims 1 to 6, provided on the outer body, i.e., the body portion.

8. A connector comprising: a container connector fixed to a container, having a container-side flow path member portion inside and an engaging portion on an outer surface; and a syringe connector as claimed in claim 7.

Images