JP2010126250A - Female connector, and connecting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a female connector which can be connected with various kinds of male connectors having different shapes and dimensions, and also of which the connecting work with the male connectors is easy, and to provide a connecting device. <P>SOLUTION: The female connector including a flexible member and a hard member can be connected with the male connector having a tubular section from which a liquid substance flows out. The flexible member has flexibility and resilientity, and is a cylindrical body having an opening in which the tubular section of the male connector is inserted on one end. The hard member has rigidity which is higher than that of the flexible member, and is laminated into a cylindrical shape around the outside of the flexible member so as to be integrated with the flexible member to form a gripping section for the female connector. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

The present invention relates to a female connector connected to a male connector through which a liquid material in a container flows out. The present invention also relates to a connector comprising a male connector and a female connector.

Enteral nutrition therapy and parenteral nutrition therapy are known as methods for administering nutrition and drugs to patients regardless of oral administration. In enteral nutrition therapy, a liquid (generally referred to as “enteral nutrition”) such as a nutrient, liquid food, or drug is administered through a tube passed from the patient's nasal cavity to the stomach or duodenum. In parenteral nutrition therapy, a liquid (generally referred to as “infusion”) containing nutritional components such as glucose and drug components is administered via an infusion line inserted into a patient's vein.

A liquid substance to be administered to a patient when performing enteral nutrition therapy is stored in a medical container. A male connector through which a liquid material flows out is provided at the lower end of the medical container. The liquid in the medical container is generally administered to the patient via a tube called an enteral nutrition set. A female connector connected to the male connector is provided at one end of the tube (see, for example, Patent Document 1).

A male connector provided in a medical container usually has a tubular portion through which a liquid material flows out. There is no standard for its shape and dimensions, and it varies from manufacturer to manufacturer of medical containers and male connectors. 19 to 27 are side views showing tubular portions 901A to 901I of a conventional male connector adopted by each manufacturer. As shown in these figures, the standards relating to the shape, outer diameter, length, etc. of the outer peripheral surface of the tubular portion of the male connector are different for each manufacturer.

In facilities for enteral nutrition (for example, medical institutions), containers filled with enteral nutrients and enteral nutrition sets are often reused. In such cases, the container and enteral nutrition set are often used. In the connected state, cleaning, disinfection, and enteral nutrient filling were performed. However, in recent years, from the viewpoint of preventing infection, prefilled nutrients sold in a state where enteral nutrients are filled in disposable containers are becoming widespread. With the spread of prefilled type nutrients, the chance that the container and enteral nutrition set are handled as separate bodies is increased, and due to the existence of various standards regarding the tubular part of the male connector of the container as described above, The problem of poor fitting (connection failure) between the male connector of the container and the female connector of the enteral nutrition set has become apparent.

As a conventional general-purpose female connector that can be connected to various male connectors, as shown in FIG. 28A, a tube is used so that it can be connected to tubular portions 901 of various male connectors having different shapes and dimensions. An elastic cylindrical rubber tube 902 connected to one end of 903 was used. As shown in FIG. 28B, the rubber tube 902 is inserted in the direction of the arrow 910 so as to cover the outer peripheral surface of the tubular portion 901, and the rubber tube 902 and the tubular portion 901 are connected as shown in FIG. Connecting. The rubber tube 902 extends and deforms according to the taper shape of the outer peripheral surface of the tubular portion 901, and is in close contact with the outer peripheral surface of the tubular portion 901 by its elastic recovery force.

JP-A-11-28244 Japanese Patent Application Laid-Open No. 2008-93211

However, in the conventional general-purpose female connector including the rubber tube 902 shown in FIG. 28A, the tubular portion 901 is connected to the rubber tube 902 due to a frictional force generated between the tubular portion 901 and the rubber tube 902. There was a problem that it was difficult to connect to the cable. That is, in the connection work, the region 902a of the rubber tube 902 in FIG. 29B is gripped and connected to the tubular portion 901, but the rubber tube 902 and the tubular portion 901 are pressed by the gripping force, and the friction between them is reduced. Since it increases, it is difficult to move the rubber tube 902 relative to the tubular portion 901. Therefore, in FIG. 28B, when the region 902b of the rubber tube 902 or the tube 903 that is not covered with the tubular portion 901 is gripped, the rubber tube 902 is easily buckled and deformed by the force in the direction of the arrow 910. It is difficult to move the rubber tube 902 relative to the tubular portion 901.

If the flexibility of the rubber tube 902 is increased so that the rubber tube 902 can be easily extended, the rubber tube 902 is more likely to buckle and be difficult to connect. Further, when the inner diameter of the rubber tube 902 is increased, the frictional force between the tubular portion 901 and the rubber tube 902 can be reduced, so that the connection work between the tubular portion 901 and the rubber tube 902 is facilitated. However, in this case, there arises a new problem that the rubber tube 902 attached to the tubular portion 901 easily falls off or a liquid material leaks between the tubular portion 901 and the rubber tube 902.

Further, depending on the shape and dimensions of the outer peripheral surface of the tubular portion 901 of the male connector, there is a problem that it may take time to insert the tubular portion 901 into the rubber tube 902.

As a method for reducing the frictional force generated between the tubular portion 901 and the rubber tube 902 when the rubber tube 902 is gripped, a technique described in Patent Document 2 is known. This is intended to reduce the frictional force generated between the tubular portion and the rubber tube by providing a grip portion configured to be harder than the container connection portion of the female connector and gripping the female connector. However, according to the contents of Patent Document 2, there still remains a problem that the soft portion of the female connector is likely to buckle when the tubular portion 901 is inserted.

The present invention provides a female connector and a connector that solve the above-described conventional problems, can be connected to various male connectors having different shapes and dimensions, and can be easily connected to the male connector. The purpose is to provide.

The female connector of the present invention is a female connector composed of a soft member and a hard member that can be connected to a male connector having a tubular portion through which a liquid material flows, and the soft member has flexibility and elasticity. And a cylindrical body having an opening into which a male connector tubular portion is inserted at one end, wherein the hard member has higher rigidity than the soft member, and is integrated with the soft member in a cylindrical shape around the outer side of the soft member. The gripping portion is formed by being laminated so that

Further, the connection tool of the present invention is a connection tool comprising a male connector having a tubular portion through which a liquid material flows and a female connector connected to the male connector, wherein the female connector is the above-described connector. It is the female connector of the present invention.

According to the present invention, since the insertion portion of the female connector into which the tubular portion of the male connector is inserted is composed of a flexible member having elasticity and flexibility, the female connector can be used in various shapes and dimensions. Can be connected to the male connector. Also, a gripping part in which a hard member is laminated outside the insertion part made of a soft member is provided, and the female connector and the male connector are connected by gripping the gripping part and connecting the female connector and the male connector. It is easy to apply a force in the direction in which the mold connectors approach each other. Even when the female connector is gripped, the gripping force is not directly transmitted to the soft member because the hard member is formed outside the soft member. Therefore, the soft member can be prevented from being crushed or buckled and deformed due to the force of gripping the female connector, and the operation of connecting the female connector and the male connector can be easily performed.

(Change according to CL3)
The hard member may be formed integrally on the outer surface of the soft member, or may be embedded in the soft member so that the soft member is located inside and outside the hard member. If the tubular portion of the male connector is in contact with the soft member when the tubular portion of the male connector is inserted into the female connector, the above effect can be exhibited.

In the female connector of the present invention, the hard member may be provided with an engaging portion that can be engaged with the male connector. With this configuration, it is possible to prevent the female connector connected to the male connector from being unintentionally dropped from the male connector.

(Change according to CL4)
In this case, the hard member is provided with a flange portion that protrudes further toward the male connector side than an end portion of the female connector on the male connector side, and the engagement portion is provided on the flange portion. Is desirable. With this configuration, the male connector and the female connector can be easily engaged. As a structure for engaging a male connector and a female connector, a male connector can be obtained by engaging a convex portion provided in one of the male connector and the female connector and a concave portion provided in the other. A structure for engaging with a female connector, either one of a male connector and a female connector is provided with a male screw, and the other is provided with a female screw that can be screwed with the male screw. The structure etc. which can connect a male connector and a female connector by screwing, and maintain the connection state are considered.

Further, the connection tool of the present invention is a connection tool comprising a male connector having a tubular portion through which a liquid material flows and a female connector connected to the male connector, wherein the female connector is the above-described connector. It is the female connector of the present invention. In the connection tool of the present invention, it is preferable that the male connector and the female connector are provided with engaging portions that engage with each other. With this configuration, it is possible to prevent the female connector connected to the tubular portion of the male connector from being unintentionally dropped from the tubular portion.

Hereinafter, the present invention will be described in detail with reference to preferred embodiments. However, the following embodiment is merely an example embodying the present invention, and the present invention is not limited to this.

(Embodiment 1)
1 is a cross-sectional view showing a schematic configuration of a female connector according to Embodiment 1 of the present invention. The female connector 100 according to the first embodiment includes a soft member 110 and a hard member 120 that is externally attached to the soft member and configured to be integrated. An alternate long and short dash line 130 is a central axis of the soft member 110 and a central axis of the female connector 100 in which the soft member 110 and the hard member 120 are integrated. In the description of the first embodiment, the direction of the central axis 130 is the vertical direction, the upper side of the paper in FIG. 1 (the side connected to a male connector described later) is “upper”, and the lower side of the paper is “lower”. And

The soft member 110 is a hollow cylindrical body, and a flexible tube 140 is fused to the lower end thereof. An opening 111 is formed at the upper end of the soft member 110, and the tubular portion 172 of the male connector is scheduled to be inserted into the lumen of the soft member 110 from the opening 110 in the direction of the central axis 130. A region of the soft member 110 including the end of the opening 111 is particularly referred to as an insertion portion. The soft member 110 is made of a material having flexibility and elasticity. For example, natural rubber, synthetic rubber (for example, PBD (polybutadiene)), PVC (polyvinyl chloride resin), ABS (acrylonitrile-butadiene-styrene copolymer), polyamide Resins, thermoplastic resins such as EVA (ethylene-vinyl acetate copolymer), polyurethane resins, and the like can be used. Since such a material is used, portions of the soft member 110 other than the portion to which the tube 140 is fused have flexibility and elasticity.

The hard member 120 is a hollow cylindrical body, and is attached so as to be integrated with the outer surface of the soft member 110 so that the central axis 130 thereof coincides with the central axis of the soft member 110. The hard member 120 is made of a material having higher rigidity and hardness than the soft member 110, and for example, polypropylene, polycarbonate, polyacetal, PVC, PBD, or the like can be used. In addition, as a method for forming the soft member 110 and the hard member 120 to be integrated, a method in which the members are integrated by adhesion or welding, a method in which the members are integrated by two-color molding or insert molding, and the like are conceivable. .

The hard member 120 is provided on the upper side of the soft member 110, that is, at a position close to the male connector 170. When the soft member 120 and the hard member 110 are integrated, a portion that forms a layer with each other is defined as a grip portion. When the female connector 100 is connected to the male connector 170, an operation is performed by holding the holding portion 150. By doing so, even if the female connector 100 is gripped, the force is not easily transmitted to the soft member insertion portion 112 by the hard member 120. Therefore, the frictional force generated between the tubular portion 172 of the male connector and the insertion portion 112 can be reduced, and the connection work between the male connector 170 and the female connector 100 can be easily performed.

FIG. 2 is an exploded view showing a schematic configuration of an example of a medical container and a male connector. The medical container 910 includes a pouch 920 and a port 930 for injecting a liquid material into the pouch or taking out the liquid material contained in the pouch. The pouch 920 is formed by a known method using a material selected from plastic materials such as polyethylene terephthalate, nylon, polypropylene, and polyethylene. The pouch 920 is preferably transparent or semi-transparent in order to confirm the contents, and may include a layer for acting as a barrier against oxygen and sunlight.

The port 930 integrated with the pouch 920 is provided with a male connector 170. The male connector 170 includes a cap part 180 and a tubular part 172. On the inner peripheral surface of the cap portion 180, a female screw that is screwed with a male screw provided in a port 930 integrated with the pouch is formed. The tubular portion 172 protrudes further downward from the center of the lower surface of the cap portion 180, and a through hole 173 through which a liquid material flows is formed inside. The outer peripheral surface of the tubular portion 172 has a tapered surface (conical frustum surface) whose outer diameter increases as it approaches the cap. The material of the male connector 170 is not particularly limited, and a known material such as a polyolefin resin such as polypropylene or polyethylene, or a polycarbonate resin can be used.

A method for connecting the female connector and the male connector in the first embodiment will be described. 3A is a cross-sectional view showing a state before connection, and FIG. 3B is a cross-sectional view showing a state after connection. First, the gripping portion 150 is gripped, and the male connector tubular portion 172 is inserted into the opening 111 of the female connector. Since the insertion part 112 of the female connector has flexibility and elasticity, the female connector insertion part 112 is deformed, for example, expanded in diameter according to the shape of the tubular part 172, and is brought into close contact with the outer peripheral surface of the tubular part 172 by its elastic recovery force. When a force in the direction of arrow 160 is applied to the female connector 100 in this state, the insertion portion 112 is deformed as the tubular portion 172 enters the depth of the insertion portion 112, and the tubular portion 172 is held by the elastic recovery force of the insertion portion 112. By doing so, the male connector 170 and the female connector 100 can be connected and held. Even if the shape, dimensions, etc. of the tubular portion 172 are different due to differences in manufacturers and standards, the insertion portion 112 is elastically deformed according to the outer peripheral surface of the tubular portion 172, so that the male connector 170 and the female connector 100 are made liquid. It can be connected securely without leakage.

At this time, the force gripping the female connector 100 is not transmitted to the insertion portion 112 by the hard member 120 having high rigidity. Therefore, the frictional force between the insertion portion 112 and the tubular portion 172 of the male connector is unlikely to increase, so that the connection operation can be easily performed. At this time, if the length X from the opening end of the female connector shown in FIG. 3C to the gripping portion is set to be shorter than the length of the tubular portion of the male connector, the force in the direction toward the male connector Even if (arrow 160) is added to the female connector 100, the soft member 110 of the female connector does not buckle and obstruct the connection between the female connector 100 and the male connector 170. Can be done.

The inner peripheral surface of the insertion part 112 of the female connector may be a cylindrical surface whose inner diameter is constant in the direction of the central axis 130, but as shown in FIG. 1, the taper increases as the inner diameter approaches the upper end. A surface is preferred. Thereby, even if the shape, size, etc. of the outer peripheral surface of the tubular portion of the male connector differ depending on the manufacturer or standard, at least a part of the outer peripheral surface of the tubular portion is at least a part of the inner peripheral surface of the insertion portion 112 Since they are in close contact, the male connector 170 and the female connector 100 can be reliably connected without leakage of the liquid material.

As shown in FIG. 1, the inner peripheral surface of the insertion portion 112 of the female connector is formed in a circle formed by a plane along the circumferential direction (that is, a plane perpendicular to the central axis 130 and the inner peripheral surface of the insertion portion). It is desirable that a continuous annular projection 113 is formed. Accordingly, as shown in FIG. 3B, when the male connector tubular portion 172 is inserted into the female connector 100, the protrusion 113 is in close contact with the outer peripheral surface of the tubular portion 172. Therefore, even when the shape and dimensions of the tubular portion 172 are different, the projection 113 maintains a close contact with the outer peripheral surface of the tubular portion 172 accordingly, so that the male connector 170 and the female connector 100 are leaked from the liquid material. And can be connected securely. As shown in FIG. 1, the annular protrusion 113 can be more reliably brought into contact with the tubular portion 172 if it is provided at a plurality of positions in the direction of the central axis 130, but only one annular protrusion 113 may be provided.

Moreover, you may provide the flange 115 as shown in FIG. 4 on the outer surface of the hard member 120 formed so that it may be united on the outer surface of a soft member, and embossing. This makes it easier to grip the female connector and makes it easier to apply a force in the direction of the arrow 160 to the female connector.

(Embodiment 2)
FIG. 5 is a sectional view showing a schematic configuration of the female connector according to Embodiment 2 of the present invention. The female connector 200 according to the second embodiment includes a cylindrical soft member 210 and a hard member 220 that is embedded in the soft member and integrated with the soft member. As in the first embodiment, the alternate long and short dash line 230 is the central axis of the soft member 210 and the central axis of the female connector 200 in which the soft member 210 and the hard member 220 are integrated. Also in the description of the second embodiment, the direction of the central axis 230 is the up-down direction, the upper side of FIG. 5 (the side connected to the male connector) is “upper side”, and the lower side of the page is “lower side”. . The description of the male connector and the pouch to which it is connected is the same as that of the first embodiment, and is therefore omitted.

The soft member 210 is a hollow cylindrical body as in the first embodiment, and a flexible tube 240 is fused to its lower end, and a male connector tubular portion 172 is inserted into its upper end. An opening 211 is formed. Also in the present embodiment, a region including the opening 211 of the soft member 210 into which the tubular portion 172 is inserted is particularly referred to as an insertion portion 212. Further, the material used for the soft member 210 and its characteristics are the same as those in the first embodiment.

The hard member 220 in the second embodiment is common to the first embodiment in that it is a hollow cylindrical body and is made of a material having higher rigidity and hardness than the soft member 210. In the second embodiment, as shown in FIG. 5, the layer of the soft member 210 is provided outside the hard member 220, that is, the hard member 220 is soft so as to be embedded in the soft member 210. It is characterized in that it is formed so as to be integrated with the member 210. The hard member 220 is provided above the soft member 210, that is, near the male connector 170, and is embedded in the soft member 210 in a state where the inner peripheral surface of the insertion portion 212 of the female connector 200 becomes a soft member. It is. A portion where the soft member 210 and the hard member 220 form a layer is referred to as a grip portion 250. When the female connector 200 and the male connector 170 are connected, the gripping portion 250 is gripped and a connection operation is performed, so that the gripping force applied when the female connector 200 is gripped is inserted by the hard member 220 into the soft member. It becomes difficult to be transmitted to the part 212. Therefore, the frictional force generated between the tubular portion 172 of the male connector and the insertion portion 212 can be reduced, and the connection operation between the male connector 170 and the female connector 200 can be easily performed.

A method for connecting the female connector 200 and the male connector 170 in the second embodiment will be described. 6A is a cross-sectional view showing a state before connection, and FIG. 6B is a cross-sectional view showing a state after connection. First, the grip portion 250 is gripped and the male connector tubular portion 172 is inserted into the opening 211 of the female connector. As in the first embodiment, the insertion portion 212 of the female connector is made of a soft member and thus has flexibility and elasticity. Therefore, deformation such as expanding the diameter according to the shape of the tubular portion 172 is performed, and the elastic recovery force closely contacts the outer peripheral surface of the tubular portion 172. When a force in the direction of the arrow 260 is applied to the female connector 200 in this state, the insertion portion 212 is deformed as the tubular portion 172 enters the depth of the insertion portion 212, and the tubular portion 172 is held by the elastic recovery force of the insertion portion 212. As a result, the male connector 170 and the female connector 220 can be connected and held. Even if the shape, dimensions, etc. of the tubular portion 172 vary depending on the manufacturer or standard, the insertion portion 212 is elastically deformed according to the outer peripheral surface of the tubular portion 172, so that the male connector 170 and the female connector 200 are made liquid. It can be connected securely without leakage.

At this time, the force holding the female connector 200 is not transmitted to the insertion portion 212 by the hard member 220 embedded in the soft member 210. For this reason, the frictional force between the insertion portion 212 and the male connector tubular portion 172 is unlikely to increase, so that the connection operation can be easily performed. At this time, as in the first embodiment, the length from the open end of the female connector 200 to the gripping portion 250 is set to be shorter than the length of the tubular portion of the male connector, thereby moving toward the male connector. Even if the force (arrow 260) is applied to the female connector, the soft member of the female connector is not likely to buckle and the connection operation can be performed more easily as in the first embodiment. .

With the configuration in which the hard member 220 is embedded in the soft member 210, the outermost surface of the female connector is composed of the soft member 210. Therefore, the force for gripping the female connector 200 is absorbed by the soft member 210 due to its elasticity and flexibility, and the gripping force is not transmitted to the insertion portion 212 of the female connector due to the presence of the hard member 220. That is, even if the female connector 200 is gripped with a stronger force, the frictional force generated between the male connector tubular portion 172 and the insertion portion 212 can be reduced. Connection operation with the connector 200 can be performed more easily. In addition, it is desirable to provide the surface of the gripping portion 250 with pear processing, embossing, a flange, or the like because the gripping portion 250 is more easily gripped.

As in the first embodiment, the inner peripheral surface of the insertion portion 212 of the female connector in the second embodiment may be a tapered surface that increases as the inner diameter approaches the upper end, and on the inner peripheral surface of the insertion portion, A continuous annular protrusion along the circumferential direction may be formed. Furthermore, these configurations may be provided together. With these configurations, when the tubular portion of the male connector is inserted into the insertion portion, at least a portion of the tubular portion and at least a portion of the inner peripheral surface of the insertion portion are in close contact with each other. Can be reliably connected without leakage of the liquid material.

In addition to the above configuration, when the male connector and the female connector are connected, the female connector may be provided with an engaging portion for the female connector to be unintentionally dropped from the male connector. Hereinafter, a female connector provided with an engaging portion and a male connector provided with an engaging portion corresponding thereto will be described.

(Embodiment 3)
FIG. 7 (A) is a front view of male connector 370 according to Embodiment 3 of the present invention, and FIG. 7 (B) is a bottom view thereof. An alternate long and short dash line 330 indicates the central axis of the male connector 370, the direction of the central axis 330 is the vertical direction, the upper side in FIG. 7 (the side connected to the port of the medical container) is “upper side”, and the lower side (female) The side to which the mold connector is connected is called “lower”.

The male connector 370 according to the third embodiment includes a cap portion 380, a base 371, and a tubular portion 372. On the inner peripheral surface of the cap portion 380, a female screw that is screwed with a male screw provided in a port of the medical container is formed. On the lower surface of the cap portion 380, a pedestal 371 is formed in which a central circular region projects downward from the surrounding annular region 374, and a tubular portion projecting further downward is formed at the center of the pedestal 372. 372 is provided. A tapered surface (conical frustum surface) whose outer diameter increases as it approaches the cap portion 380 is formed on the outer peripheral surface of the tubular portion 372 in this example, and the liquid material in the medical container flows out to the tubular portion 372. A through-hole 373 is formed.

A pair of engaging claws 375 are formed on the outer peripheral surface of the base 371 so as to be symmetric with respect to the central axis 330. The engaging claw 375 is formed to protrude in the radial direction with respect to the central axis 330. The lower surface of the pedestal 371 is a flat surface, and this lower surface coincides with the lower surface of the engaging claw 375. The shape of the pair of engaging claws 375 is symmetric with respect to the central axis 330 and is formed such that the distance between the tops thereof is larger than the outer diameter of the portion of the base 371 where the engaging claws 375 are not provided. ing.

  8 is a cross-sectional view of the female connector 300 according to the third embodiment. FIG. 9A is a top view thereof, FIG. 9B is a front view of the upper end side of the female connector 300, and FIG. (C) is a side view of the upper end side of the female connector. 10A is a cross-sectional view taken along line BB ′ in FIG. 9B, and FIG. 10B is a cross-sectional view taken along line CC ′ in FIG. 9C. is there. An alternate long and short dash line 330 is the central axis of the female connector 300, and the direction of the central axis 330 is the vertical direction, the side connected to the male connector is “upper side”, and the opposite side is “lower side”.

As shown in FIG. 8, the female connector 300 according to the third embodiment includes a cylindrical soft member 310 and a hard member 320 formed so as to be integrated with the soft member. Most of the configuration is the same as the configuration described in the first or second embodiment, such that the portion where 310 and the hard member 320 form a layer becomes the grip portion 350. In the present embodiment, a flange portion 321 that protrudes further upward, that is, toward the male connector side, from the upper end portion of the hard member 320 is provided. The flange portion 321 in this embodiment includes an arc-shaped wall 322 having a shape substantially along a cylindrical surface with the central axis 330 as a central axis, and a crossing portion 323 that connects the lower end of the arc-shaped wall 322 and the upper end of the hard member 320. Consists of Further, as shown in FIG. 10A, the arc-shaped wall 322 is formed in three regions, that is, a passage region 324, an engagement region 325, and a sliding region 326 depending on the difference in the shape of the inner peripheral surface facing the central axis 330. Broadly divided. The distance from the central axis 330 of the inner peripheral surface of the passage region 324 is configured to be larger than the distance from the central axis 330 of the inner peripheral surface of the sliding region 326. The engagement region 325 positioned between the passage region 324 and the sliding region 326 has an engagement wall extending in the circumferential direction so as to connect the upper end of the passage region 324 and the upper end of the sliding region 326 to the upper end thereof. 327. Between the engaging wall 372 and the crossing part 322, there is a through hole 328 that is recessed in a concave shape and is opened in the radial direction.

The length between the pair of opposing passage areas 324 is greater than the distance between the tops of the pair of engaging claws 375 provided on the male connector 370. In addition, the length between the pair of opposed sliding regions 326 is smaller than the distance between the tops of the pair of engaging claws 375 and larger than the outer diameter of the base 371 of the male connector.

A method for connecting the female connector to the male connector in the third embodiment will be described. First, as in the first and second embodiments, the female connector gripping portion 350 is gripped, and the male connector tubular portion 372 is inserted into the female connector insertion portion 312. Since the insertion portion 312 is made of a soft member, it has elasticity and flexibility. Therefore, the insertion portion 312 is deformed according to the shape of the outer peripheral surface of the inserted tubular portion 372, and the outer peripheral surface of the tubular portion 372 is deformed by the elastic recovery force. Close contact with. Further, the force applied by gripping the female connector 300 and the force applied so that the female connector 300 faces the male connector 370 are not transmitted to the inner peripheral surface of the insertion portion 312 by the hard member 320. Therefore, the frictional force between the insertion portion 312 and the tubular portion 372 does not increase, and the male connector 370 and the female connector 300 can be easily connected. Further, since the hard member 320 has a shape that protrudes further upward from the upper end of the female connector 300 as a collar 321, the hard member 320 exists from the grip portion 350 to the opening 311 of the female connector. Therefore, no matter where the grip portion 350 is gripped, the region on the opening 311 side from the gripped portion does not undergo buckling deformation, and the connection operation can be easily performed.

Further, when the tubular portion 372 is inserted deeply into the insertion portion 312, the male connector base 371 is inserted between the arcuate walls 322 provided in the flange portion 321. Here, when the tubular region 372 is further inserted deeply into the insertion portion 312 in a state where the passage region 324 of the flange portion 321 and the position of the engagement claw 375 provided on the pedestal of the male connector coincide, the pedestal of the male connector 371 contacts the upper end of the opening 311 of the female connector. When the female connector 300 is rotated clockwise with respect to the male connector 370 in this state, the position of the engaging claw 375 is changed from the passing area 324 of the arcuate wall 322 to the engaging area 325. Since the length between the pair of sliding areas 326 is smaller than the distance between the tops of the pair of engaging claws 375, when the engaging claws 375 come into contact with the end of the through hole 328 on the sliding area 326 side, The rotation of the female connector 300 is limited. In this state, the engagement claw 375 and the through hole 328 are engaged, so that the connection state of the male connector 370 and the female connector 300 can be strengthened. The connection state is never released.

The connection state between the male connector 370 and the female connector 300 can be released by reversing the above operation. That is, when the female connector 300 is rotated counterclockwise with respect to the male connector 370, the position of the engagement claw 375 is changed from the engagement region 325 to the passage region 324. If the female connector 300 is pulled out from the male connector 370 in this state, the connected state can be released.

If the shape of the periphery of the engaging claw 375 including the pedestal 371 provided on the male connector 370 corresponds to the shape of the flange 321 provided on the female connector, the male connector and the female connector are engaged. Can be made. In other words, even if the shape and dimensions of the tubular part of the male connector differ depending on the manufacturer and standard, if the shape around the engaging claw including the base corresponds to the shape of the collar, Since the mold connector and the female connector can be engaged, the connection state can be maintained more firmly. Even if the shape of the periphery of the engaging claw including the pedestal does not correspond to the shape of the collar portion, the inner peripheral surface of the insertion portion 312 of the female connector is made of a soft member. The surface is elastically deformed according to the outer peripheral surface of the tubular portion of the male connector, and the male connector and the female connector can be connected without leakage of the liquid material.

If the engaging claws 375 are arranged along the surface of the base 371 of the male connector provided with the tubular portion 372, the height of the base 371 can be further reduced. As a result, the height of the arc-shaped wall 322 of the female connector 300 can be reduced, so that the entire member can be formed more compactly.

By making the height of the arc-shaped wall 322 equal to the height of the pedestal 371 of the male connector, the male connector 370 and the female connector 300 can be connected more firmly, and the female connector 300 and the male connector 300 can be connected more firmly. Since the connection portion with the mold connector 370 can be covered with the arc-shaped wall 322, it is advantageous in terms of hygiene.

The arc-shaped wall 322 may be formed in a part of the hard member 320 in the circumferential direction, but may be provided over the entire circumference of the hard member 320. If it is provided over the entire circumference of the hard member 320, the connecting portion between the male connector 370 and the female connector 300 is covered over the entire circumference, which is advantageous in terms of hygiene.

In the third embodiment, the outer side of the through hole 328 provided in the arc-shaped wall 322 may be closed with a wall. With this configuration, the connection portion between the male connector 370 and the female connector 300 can be covered by the arc-shaped wall 322, which is advantageous in terms of hygiene. Further, if a recess is provided on the upper side of the end of the through hole 328 on the sliding region 326 side so that the engagement claw 375 can be fitted, the male connector 370 and the female connector 300 are connected when the male connector 370 and the female connector 300 are connected. The movement of the engaging claw 375 can be limited by fitting the joint claw 375 into the recess. Therefore, even if a force that causes the female connector 300 to rotate unexpectedly is applied, the female connector 300 can be prevented from rotating.

The description of Embodiment 1 and / or Embodiment 2 can be applied to this embodiment as it is or by adding obvious modifications as appropriate.

(Embodiment 4)
FIG. 11A is a front view of a male connector according to Embodiment 4 of the present invention, and FIG. 11B is a bottom view thereof. An alternate long and short dash line 430 indicates the central axis of the male connector 470, the direction of the central axis 430 is the vertical direction, the upper side of the paper (the side connected to the port of the medical container) in FIG. The side to which the mold connector is connected is called “lower”.

The male connector 470 according to the fourth embodiment includes a cap part 480, a pedestal 471, and a tubular part 472. On the inner peripheral surface of the cap portion 480, a female screw that is screwed with a male screw provided in a port of the medical container is formed. On the lower surface of the cap portion 480, a pedestal 471 having a central circular region projecting downward from the surrounding annular region 473 is formed, and a tubular portion projecting further downward is formed at the center of the pedestal 471. 472 is provided. A tapered surface (conical frustum surface) whose outer diameter increases toward the cap portion 480 is formed on the outer peripheral surface of the tubular portion 472 in this example, and the liquid material in the medical container flows out to the tubular portion 472. A through-hole 475 is formed for this purpose. A male screw 474 is formed on the outer peripheral surface of the base 471.

FIG. 12 is a sectional view showing a schematic configuration of the female connector 400 according to the fourth embodiment. FIG. 13A is a front view of the female connector according to the fourth embodiment, and FIG. 13B is a cross-sectional view thereof. An alternate long and short dash line 430 is the central axis of the female connector 400, and the direction of the central axis 430 is the vertical direction, the side connected to the male connector is “upper”, and the opposite side is “lower”.

As shown in FIG. 12, the female connector 400 according to the fourth embodiment is mostly the same as that described in the first and / or second embodiments, and includes a cylindrical soft member 410 and the soft connector. The hard member 420 is formed so as to be integrated with the member. Then, similarly to the third embodiment, a flange portion 421 that protrudes further upward from the upper end portion of the hard member 420, that is, the male connector side 470 is provided. The collar portion 421 in the fourth embodiment is formed in a cylindrical shape, and is characterized in that a female screw 422 that engages with a male screw 474 provided on the outer peripheral surface of the base 471 is provided on the inner surface thereof. Have

A method for connecting the female connector 400 of the fourth embodiment to the male connector 470 will be described. First, as in the other embodiments, the grip portion 450 of the female connector is gripped, and the tubular portion 472 of the male connector is inserted into the insertion portion 412 of the female connector. Since the insertion portion 412 is made of a soft member, it has elasticity and flexibility. Therefore, the insertion portion 412 is deformed according to the shape of the outer peripheral surface of the inserted tubular portion 472, and the outer peripheral surface of the tubular portion 472 is deformed by the elastic recovery force. Close contact with. Further, the force applied by gripping the female connector 400 and the force applied to the female connector 400 so as to face the male connector 470 are not transmitted to the inner peripheral surface of the insertion portion 412 by the hard member 420. Therefore, the frictional force between the insertion portion 412 and the tubular portion 472 does not increase, and the male connector 470 and the female connector 400 can be easily connected. Further, the hard member 420 has a shape that protrudes further upward from the upper end of the female connector 400 as a flange 421. Therefore, the hard member 420 exists from the holding part 450 to the opening 411 of the female connector. Therefore, no matter where the grip portion 450 is gripped, the region on the opening 411 side from the gripped portion does not undergo buckling deformation, and the connection operation can be easily performed.

Further, a force in a direction toward the male connector is applied to the female connector 400 to insert the tubular portion 472 deeply into the insertion portion 412, and the female connector 400 is rotated clockwise with respect to the male connector 470. Then, the male screw 474 provided on the outer peripheral surface of the base 471 of the male connector meshes with the female screw 422 provided on the flange 421 of the female connector. If the female connector 400 is further rotated in the clockwise direction with respect to the male connector 470 in this state, the female connector 400 is raised by screwing with the male screw 474 of the pedestal and the female screw 422 of the buttocks, and finally. In this case, the upper end of the flange 422 abuts on the annular region 473 of the male connector, and the female connector 400 does not rotate any further. In this way, the male connector 470 and the female connector 400 are screwed together, so that the mutual connection can be further strengthened, and the connection state is not easily released even if an unexpected impact is applied.

The connection state between the male connector 470 and the female connector 400 can be released by reversing the above operation. That is, if the female connector 400 is rotated counterclockwise with respect to the male connector 470, the male connector 470 and the female connector 400 are unscrewed, and the male screw 474 and the female screw 422 are separated. If the female connector 400 is pulled out from the male connector 470 at that time, the connected state can be released.

If the shape of the male screw provided on the male connector 470 corresponds to the shape of the female screw provided on the flange 421 of the female connector, the male screw and the female screw are screwed together as described above. A male connector and a female connector can be connected. That is, even if the shape, dimensions, etc. of the tubular portion of the male connector differ depending on the manufacturer or standard, it corresponds to the female screw provided on the flange 421 of the female connector on the outer peripheral surface of the pedestal of the male connector. If the male screw is provided, the male connector and the female connector can be connected according to the above method, so that the connection state can be maintained more firmly. Even if the male connector is not provided with the male screw corresponding to the female screw 421, the inner peripheral surface of the insertion portion of the female connector is made of a soft member. It is elastically deformed according to the outer peripheral surface of the part, and the male connector and the female connector can be connected without leakage of the liquid material.

In the fourth embodiment, when the male screw 474 on the male connector side and the female screw 422 on the female connector side are screwed together, a mechanism may be provided to prevent the screwing from loosening. As the mechanism, for example, projections are provided on the upper surface of the annular region 473 and the flange portion 421 of the male connector, and the projections engage with each other when the male connector 470 and the female connector 400 are screwed together. Thus, a mechanism for preventing the screw from loosening, a mechanism for forming a part of the screw thread higher than the other part, and an effect for preventing the screw thread from loosening when the part is engaged with each other can be considered.

It is desirable that the height of the flange 421 in the fourth embodiment is substantially the same as the height of the base 471 of the male connector. With such a configuration, when the male connector 470 and the female connector 400 are connected by the above procedure, the male connector base 471 is almost entirely covered by the flange portion 421. Therefore, the male connector 470 and the female connector 470 are connected to each other. The connection portion of the mold connector 400 can be covered, which is advantageous in terms of hygiene.

The description of Embodiment 1 and / or Embodiment 2 can be applied to this embodiment as it is or by adding obvious modifications as appropriate.

(Embodiment 5)
FIG. 14 (A) is a front view of a male connector according to Embodiment 5 of the present invention, and FIG. 14 (B) is a bottom view thereof. An alternate long and short dash line 530 indicates the central axis of the male connector 570, the direction of the central axis 530 is the vertical direction, the upper side in FIG. 12 (the side connected to the port of the medical container) is “upper side”, The side to which the mold connector is connected is called “lower”.

The male connector 570 in the fifth embodiment includes a cap part 580, a base 571, and a tubular part 572. On the inner peripheral surface of the cap portion 580, a female screw that is screwed with a male screw provided in a port of the medical container is formed. On the lower surface of the cap portion 580, a pedestal 571 whose central circular region projects downward from the surrounding annular region 583 is formed. A tubular portion projecting further downward is formed at the center of the pedestal 571. 572 is provided. A tapered surface (conical frustum surface) whose outer diameter increases toward the cap portion 580 is formed on the outer peripheral surface of the tubular portion 572 in this example, and the liquid material in the medical container flows out to the tubular portion 572. A through hole 574 is formed for this purpose.

On the outer peripheral surface of the pedestal 571, an engagement protrusion 575 that protrudes in the radial direction with respect to the central axis 530 is formed continuously in an annular shape over the entire circumference of the pedestal 571. The lower surface of the pedestal 571 (that is, the surface on which the tubular portion 572 is provided) is a flat surface, and the lower surface coincides with the lower surface of the engaging protrusion 575. An undercut portion 576 having an outer diameter smaller than that of the engagement protrusion 575 is formed between the engagement protrusion 575 and the annular region 573.

FIG. 15 is a cross-sectional view showing a schematic configuration of female connector 500 according to the fifth embodiment. 16A is a top view thereof, FIG. 16B is a side view of the upper end side of the female connector 500, and FIG. 16C is a view taken along the line AA ′ in FIG. It is sectional drawing. An alternate long and short dash line 530 is the central axis of the female connector 500, and the direction of the central axis 530 is the vertical direction, the side connected to the male connector is “upper side”, and the opposite side is “lower side”.

As shown in FIG. 15, most of the female connector 500 according to the fifth embodiment is the same as that described in the first and / or the second embodiment, and the soft member 510 is integrated with the soft member. It consists of the hard member 520 formed so that it may become. The female connector 500 according to the fifth embodiment is characterized in that the hard member 520 includes a pair of clips 521 protruding further upward from the upper end of the female connector 500.

Each of the pair of clips 521 is provided with a pair of engaging claws 522 protruding toward the other clip. On the upper surface of the engaging claw 522, an inclined surface 523 that is inclined slightly downward with respect to the central axis 530 is formed. Desirably, the height of the pair of clips 521 is substantially equal to the height of the base 571 of the male connector. The height from the upper end surface of the female connector opening 511 to the lower surface of the engaging claw 522 is preferably substantially the same as the length from the lower surface of the base 571 to the upper surface of the engaging protrusion 575.

A method for connecting the female connector of the fifth embodiment to the male connector will be described. First, as in other embodiments, the female connector grip 550 is gripped, and the male connector tubular portion 572 is inserted into the female connector insert 512. Since the insertion portion 512 is made of a soft member, it has elasticity and flexibility. Therefore, the insertion portion 512 is deformed according to the shape of the outer peripheral surface of the inserted tubular portion 572, and the outer peripheral surface of the tubular portion 572 is deformed by the elastic recovery force. Close contact with. Further, the force applied by gripping the female connector 500 and the force applied so that the female connector 500 is directed toward the male connector 570 are not transmitted to the inner peripheral surface of the insertion portion 512 by the hard member 520. Therefore, the frictional force between the insertion portion 512 and the tubular portion 572 does not increase, and the male connector 570 and the female connector 500 can be easily connected. Further, since the hard member 520 has a shape protruding as a pair of clips 521 further upward from the upper end of the female connector 500, the hard member 520 exists from the grip 550 to the opening 511 of the female connector. Therefore, no matter where the grip portion 550 is gripped, the region on the opening 511 side from the gripped portion does not undergo buckling deformation, and the connection operation can be easily performed.

When the tubular portion 572 of the male connector is inserted deeply into the insertion portion 512 of the female connector, the inclined surface 523 of the clip 521 that protrudes from the upper end of the female connector 500 and the engagement protrusion 575 provided on the male connector eventually. The bottom surface comes into contact. When the tubular portion 572 is further inserted deeply into the insertion portion 512 in this state, the clips 521 are elastically deformed in directions away from each other (that is, outward of the female connector 500), and the engaging claws 522 cause the engaging protrusions 575 to move. When it gets over, the clip 521 recovers elastically, and the engaging claw 522 fits into the undercut portion 576 of the male connector. By engaging the engaging claws 522 and the engaging protrusions 575 in this manner, the connection state between the male connector 570 and the female connector 500 can be maintained more firmly, and even if an unexpected impact is applied, The connection state is difficult to be released. When the connection state between the male connector 570 and the female connector 500 is released, the clip 521 is elastically deformed outward, and the distance between the tips of the engagement claws 522 is longer than the distance in the diameter direction of the engagement protrusion 575. If the female connector 500 is pulled out from the male connector 570 in a state in which it is connected, the connected state can be released.

If the shape of the engagement protrusion 575 provided on the male connector 570 corresponds to the shape of the clip 521 provided on the female connector 500, the engagement protrusion 575 and the clip 521 are engaged with each other as described above. A male connector and a female connector can be connected to each other. In other words, even if the shape and dimensions of the tubular portion of the male connector are different due to differences in manufacturers and standards, the male connector and the female can be used according to the above method as long as the engagement protrusion is provided on the male connector. Since a type | mold connector can be connected, a connection state can be maintained more firmly. Even if the engagement protrusion is not provided on the male connector, the inner peripheral surface of the insertion portion 512 of the female connector is made of a soft member, so that the inner peripheral surface of the insertion portion 512 is the tubular portion 572. The male connector 570 and the female connector 500 are elastically deformed according to the outer peripheral surface, and the liquid material can be connected without leakage.

The engaging protrusion 576 is provided on the outer peripheral surface of the male connector base 571 over the entire circumference, but as shown in FIG. 17, a portion provided with a slit 577 extending radially with respect to the central axis 530. There may be. In this case, the slit 577 is preferably provided at a position corresponding to the clip 521 of the female connector. According to this configuration, if the clip 521 is passed through the slit 577 and the clip engaging claw 522 reaches the undercut portion 576, and the female connector 500 is rotated about the central shaft 530 in this state, the engaging protrusion 575 and the engaging claw 522 can be engaged, and even if a force is applied in the vertical direction, the connection state between the male connector 570 and the female connector 500 is difficult to be released. Further, when releasing the connection between the male connector 570 and the female connector 500, the female connector 500 is rotated so that the position of the clip 521 and the position of the slit 577 coincide with each other. By pulling out from the male connector 570, the connection can be easily released.

The engagement protrusion 575 is preferably provided along the surface of the base 571 where the tubular portion 572 is provided. According to this configuration, the length in the vertical direction of the clip 521 of the male connector 570 and the female connector 500 can be set small, and the member can be formed compactly.

Further, although the clip 521 and the engaging claws 522 provided in the female connector 500 have been described as a pair, the number is not limited to two, and may be one or three or more.

The description of Embodiment 1 and / or Embodiment 2 can be applied to this embodiment as it is or by adding obvious modifications as appropriate.

In the above first to fifth embodiments, as shown in FIG. 2, the male screw provided on the inner surface of the cap part of the male connector and the male screw formed on the port of the medical container are screwed together so that the male Although the description has been made according to the example in which the mold connector is connected to the medical container, a configuration in which a female screw is provided in the port of the medical container and a male screw is provided on the male connector side may be employed. Moreover, as shown in FIG. 18, the structure of the base of a male connector, a tubular part, etc. may be integrated and formed in the port of a medical container.

Although there is no restriction | limiting in particular in the utilization field of this invention, For example, it can use for the medical container used when performing enteral nutrition therapy and parenteral nutrition therapy. In addition, liquid materials such as foods other than those for medical use can be used for handling containers and tubes.

It is sectional drawing which showed schematic structure of the female connector which concerns on Embodiment 1 of this invention. It is the figure which showed schematic structure of the medical container and the male connector. It is sectional drawing which showed the method of connecting the female connector which concerns on Embodiment 1 of this invention to a male connector, (A) shows the state before a connection, (B) shows the state after a connection, respectively. (C) is an enlarged view of the upper end side of the female connector. It is the figure which showed schematic structure of the other Example of the female connector which concerns on Embodiment 1 of this invention, (A) is the side view, (B) is the top view. It is the figure which showed schematic structure of the female connector which concerns on Embodiment 2 of this invention, (A) is the sectional drawing, (B) is the top view. It is sectional drawing which showed the method of connecting the female connector which concerns on Embodiment 2 of this invention to a male connector, (A) shows the state before a connection, (B) shows the state after a connection, respectively. (A) is a side view of the male connector according to Embodiment 3 of the present invention, and (B) is a bottom view thereof. It is sectional drawing which showed schematic structure of the female connector which concerns on Embodiment 3 of this invention. (A) is the top view of the female connector which concerns on Embodiment 3 of this invention, (B) is the front view, (C) is the side view. 9A is a cross-sectional view taken along line B-B ′ in FIG. 9B, and FIG. 9B is a cross-sectional view taken along line C-C ′ in FIG. (A) is a side view of the male connector according to Embodiment 4 of the present invention, and (B) is a bottom view thereof. It is sectional drawing which showed schematic structure of the female connector which concerns on Embodiment 4 of this invention. (A) is a side view of the female connector which concerns on Embodiment 4 of this invention, (B) is the sectional drawing. (A) is a side view of a male connector according to Embodiment 5 of the present invention, and (B) is a bottom view thereof. It is sectional drawing which showed schematic structure of the female connector which concerns on Embodiment 5 of this invention. (A) is a top view of a female connector according to Embodiment 5 of the present invention, (B) is a side view thereof, and (C) is a cross-sectional view taken along line AA ′ of FIG. 16 (A). is there. (A) is the side view which showed the other Example of the male connector which concerns on Embodiment 5 of this invention, (B) is the bottom view. It is the figure which showed schematic structure of the other Example of a medical container and a male connector. It is the side view which showed an example of the tubular part of the conventional male connector. It is the side view which showed an example of the tubular part of the conventional male connector. It is the side view which showed an example of the tubular part of the conventional male connector. It is the side view which showed an example of the tubular part of the conventional male connector. It is the side view which showed an example of the tubular part of the conventional male connector. It is the side view which showed an example of the tubular part of the conventional male connector. It is the side view which showed an example of the tubular part of the conventional male connector. It is the side view which showed an example of the tubular part of the conventional male connector. It is the side view which showed an example of the tubular part of the conventional male connector. It is sectional drawing which showed an example of the method of connecting the conventional general purpose female connector to a male connector, (A) is the state before connection, (B) is in the state of connection, (C) is after connection. Each state is shown.

Explanation of symbols

100 female connector 110 soft member 111 opening 112 insertion portion 113 annular projection 114 step 115 flange 120 hard member 122 slit 130 central axis 140 tube 150 gripping portion 160 force in the direction in which the female connector faces the male connector 170 male connector 172 Tubular part 173 Through-hole 180 Cap part 200 Female connector 210 Soft member 211 Opening 212 Insertion part 220 Hard member 230 Central shaft 240 Tube 250 Grasping part 260 Force in the direction of the female connector toward the male connector 300 Female connector 310 Soft member 311 Opening 312 Insertion part 320 Hard member 321 Gutter part 322 Arc-shaped wall 323 Crossing part 324 Passing area 325 Engaging area 326 Sliding area 327 Engaging wall 328 Through-hole 330 Central shaft 350 Gripping part 370 Type connector 371 pedestal 372 tubular portion 373 through-hole 374 annular region 375 engagement claw 400 female connector 410 soft member 411 opening 412 insertion portion 420 hard member 421 flange 422 female screw 430 center shaft 450 gripping portion 470 male connector 471 pedestal 472 Tubular portion 473 Annular region 474 Male screw 475 Through-hole 500 Female connector 510 Soft member 511 Opening 512 Insertion portion 520 Hard member 521 Clip 522 Engaging claw 523 Inclined portion 530 Center shaft 550 Grip portion 570 Male connector 571 Base 572 Tubular Portion 573 Annular region 574 Through hole 575 Engagement protrusion 576 Undercut portion 577 Slit 600 Medical container 620 Pouch 621 Seal region 622 Hole 623 Fastener 630 Male connector (port)
631 Tubular portion 901 Male connector 902 Rubber tube 903 Tube 910 Force of rubber tube toward male connector

Claims (6)

A female connector composed of a soft member and a hard member that can be connected to a male connector having a tubular portion through which a liquid material flows,
The soft member is a cylindrical body having flexibility and elasticity, and having an opening into which a male connector tubular portion is inserted at one end,
A female connector, wherein the hard member has higher rigidity than the soft member, and is formed by being laminated in a cylindrical shape so as to be integrated with the soft member around the outer periphery of the soft member. The female connector according to claim 1, wherein a soft member is further laminated on the outside of the hard member, and the hard member is embedded in the soft member. The female connector according to claim 1, wherein the hard member includes an engaging portion that can be engaged with the male connector. The female member according to claim 3, wherein the hard member includes a flange that protrudes from an end of the female connector-side soft member of the female connector, and the engagement shape is provided in the flange. Type connector. It is a connection tool which consists of a male connector which has a tubular part from which a liquid thing flows out, and a female connector connected to the male connector, The female connector according to any one of claims 1 to 4. A connector characterized by being a female connector. The connector according to claim 5, wherein each of the male connector and the female connector is provided with an engaging portion that engages with each other.

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