WO2017104689A1 - Female connector - Google Patents

Female connector Download PDF

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Publication number
WO2017104689A1
WO2017104689A1 PCT/JP2016/087167 JP2016087167W WO2017104689A1 WO 2017104689 A1 WO2017104689 A1 WO 2017104689A1 JP 2016087167 W JP2016087167 W JP 2016087167W WO 2017104689 A1 WO2017104689 A1 WO 2017104689A1
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WO
WIPO (PCT)
Prior art keywords
peripheral surface
female connector
male member
tubular portion
male
Prior art date
Application number
PCT/JP2016/087167
Other languages
French (fr)
Japanese (ja)
Inventor
幸毅彦
国重隆彦
上原康賢
瀧本和彦
Original Assignee
株式会社ジェイ・エム・エス
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to JP2015-244431 priority Critical
Priority to JP2015244431 priority
Priority to JP2016-164765 priority
Priority to JP2016164765A priority patent/JP2017109075A/en
Application filed by 株式会社ジェイ・エム・エス filed Critical 株式会社ジェイ・エム・エス
Priority claimed from US15/776,535 external-priority patent/US20180326198A1/en
Publication of WO2017104689A1 publication Critical patent/WO2017104689A1/en

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61JCONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J15/00Feeding-tubes for therapeutic purposes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/10Tube connectors; Tube couplings

Abstract

A female connector (1) is capable of connecting to a male connector (100) provided with a tubular male member (921). The female connector (1) is provided with: a tube part (11) configured such that a male member (921) can be inserted therein, the tube part (11) being of hollow cylindrical shape; and a tubular part (17) disposed so as to surround the tube part (11), the tubular part (17) being of hollow cylindrical shape. When the male member (921) is inserted into the tube part (11), a liquid-tight seal (19) is formed between the tubular part (17) and the male member (921), and the tubular part (17) and the male member (921) communicate with each other.

Description

Female connector

The present invention relates to a female connector preferably used for enteral nutrition.

Enteral nutrition is known as a method of administering liquids containing nutrients and drugs to patients who are unable to take their meals from their mouths. In enteral nutrition, a catheter is placed in a patient with the catheter inserted from the outside of the body into the digestive tract (for example, the stomach). Known catheters include a nasal catheter that is inserted from the patient's nose, a PEG (Percutaneous Endoscopic Gastrostomy) catheter that is inserted into a gastric fistula formed on the patient's abdomen, and the like. A liquid such as a nutrient, liquid food (commonly referred to as “enteral nutrient”), or a drug is administered to a patient via a catheter. When a liquid substance is administered to a patient, a container storing the liquid substance and a catheter (nasal catheter, PEG catheter, etc.) placed in the patient are connected via a flexible tube or the like. In order to connect different members, conventionally, a male connector has been used as an upstream (container side) connector (hereinafter referred to as “container side connector”) with respect to the flow of liquid material, and a downstream (patient side) connector (hereinafter referred to as “patient”). Female connectors are used as the “side connectors” (see, for example, Patent Document 1).

In recent years, in order to prevent erroneous connection with connectors used in fields other than enteral nutrition, the female connector 910 shown in FIGS. 12A and 12B is used as a container-side connector, and FIGS. 13A and 13B are used as patient-side connectors. It is considered that the male connector 920 shown in FIG. 1 is internationally standardized as an international standard ISO80369-3 regarding nutritional medical devices.

12A and 12B have a female connector (container-side connector) 910 having a hollow cylindrical tubular portion (female member) 911. The inner peripheral surface 912 of the tubular portion 911 is a tapered surface (so-called female tapered surface) whose inner diameter increases as it approaches the tip. A threaded projection (male thread) 915 is formed on the outer peripheral surface of the tubular portion 911.

A male connector (patient side connector) 920 shown in FIGS. 13A and 13B has a cylindrical male member 921 and an outer cylinder 923 surrounding the male member 921. The male member 921 and the outer cylinder 923 are connected via a bottom plate 924 protruding in a flange shape along the radial direction from the base end portion of the male member 921. The outer peripheral surface 922 of the male member 921 is a tapered surface (so-called male tapered surface) whose outer diameter decreases as it approaches the tip. The male member 921 is formed with a flow path 927 that penetrates the male member 921 along the longitudinal direction thereof. An inner peripheral surface 928 of the male member 921 that defines the flow path 927 is a cylindrical surface having a constant inner diameter in the longitudinal direction of the male member 921. A female screw 925 is formed on the inner peripheral surface of the outer cylinder 923 facing the male member 921.

As shown in FIG. 14, the female connector 910 and the male connector 920 are connected by inserting a male member 921 into the tubular portion 911 and screwing a screw-shaped protrusion 915 and a female screw 925. Since the inner peripheral surface 912 of the tubular portion 911 and the outer peripheral surface 922 of the male member 921 are tapered surfaces having the same diameter and taper angle, they form a liquid-tight seal and come into surface contact. The screw-like protrusion 915 and the female screw 925 that are screwed together constitute a screw lock mechanism for locking the connection state between the female connector 910 and the male connector 920. The female connector 910 and the male connector 920 are liquid-tight (property that liquid does not leak out from the connection portion between the female connector 910 and the male connector 920 even when pressure is applied to the liquid) and connection strength (connected female The connector 910 and the male connector 920 do not separate even when a tensile force is applied.

International Publication No. 2008/152871 Pamphlet

In a state where the female connector 910 and the male connector 920 are connected as shown in FIG. 14, a liquid material (for example, enteral nutrient) flows from the female connector 910 to the male connector 920 (from the top to the bottom in FIG. 14). . A space from the small-diameter portion 913 of the female connector 910 to the flow path 927 of the male member 921 (portion to which many dots are added in FIG. 14) is filled with a liquid material.

Thereafter, the female connector 910 and the male connector 920 are separated. A part of the liquid in the space includes a base end inner peripheral surface 912a (see FIG. 12B) of the tubular portion 911 of the female connector 910 and a distal end outer peripheral surface 922a of the male member 921 of the male connector 920 (FIG. 13A and FIG. 13B).

The liquid substance attached to the female connector 910 and the male connector 920 after separation is not administered to the patient. For this reason, the connection tool which consists of the female connector 910 and the male connector 920 has the subject that the liquid substance as measured cannot be administered to a patient. For example, when the liquid substance contains a drug, the accuracy of the dose of the drug to the patient is reduced, and an expensive drug is wasted.

The above-mentioned problem similarly has a connector that does not include a screw lock mechanism (screw projection 915 and female screw 925) and that simply inserts the male member 921 into the tubular portion 911 for connection (so-called slip connection). .

This invention aims at reducing the liquid substance adhering to a male connector and a female connector after isolate | separating a male connector and a female connector.

The female connector of the present invention can be connected to a male connector provided with a cylindrical male member. The female connector includes a tubular portion having a hollow cylindrical shape configured to be able to insert the male member, and a hollow cylindrical shape arranged coaxially with the tubular portion and surrounded by the tubular portion. The cylindrical part which has. When the male member is inserted into the tubular portion, the tubular portion is formed with a liquid-tight seal between the tubular portion and the male member, and the tubular portion and the male member communicate with each other. It is configured as follows.

According to the female connector of the present invention, when the female connector is connected to the male connector, a liquid-tight seal is formed between the tubular portion and the male member, and the tubular portion and the male member communicate with each other. The seal suppresses the liquid material from flowing to the inner peripheral surface of the tubular portion and the outer peripheral surface of the male member. For this reason, after separating a male connector and a female connector, the liquid substance adhering to a male connector and a female connector can be reduced.

1A is a perspective view of a female connector according to Embodiment 1 of the present invention, and FIG. 1B is a cross-sectional view along a plane including the central axis of the female connector. FIG. 2A is a perspective view of a male connector that can be connected to the female connector of the present invention, and FIG. 2B is a cross-sectional view along a plane including the central axis of the male connector. FIG. 3A is a perspective view illustrating a state in which the female connector according to Embodiment 1 of the present invention is connected to the male connector. 3B is a cross-sectional view of FIG. 3A. FIG. 4 is a cross-sectional perspective view of the female connector according to Embodiment 2 of the present invention. FIG. 5 is a cross-sectional view illustrating a state in which the female connector according to Embodiment 2 of the present invention is connected to the male connector. FIG. 6 is a cross-sectional view showing a state where the female connector according to Embodiment 3 of the present invention is connected to the male connector. FIG. 7 is a cross-sectional view of a female connector according to Embodiment 4 of the present invention. FIG. 8 is a cross-sectional view illustrating a state in which the female connector according to Embodiment 4 of the present invention is connected to the male connector. 9A is a perspective view of a female connector according to Embodiment 5 of the present invention, and FIG. 9B is a cross-sectional view taken along a plane including the central axis of the female connector. FIG. 10 is a cross-sectional view showing a state where the female connector according to Embodiment 5 of the present invention is connected to the male connector. FIG. 11: is sectional drawing along the surface containing the central axis of the female connector which concerns on Embodiment 6 of this invention. FIG. 12A is a perspective view of a female connector considered as ISO80369-3. FIG. 12B is a cross-sectional view along a plane including the central axis of the female connector. FIG. 13A is a perspective view of a male connector being considered as ISO80369-3. FIG. 13B is a cross-sectional view taken along a plane including the central axis of the male connector. FIG. 14 is a cross-sectional view showing a state in which a male connector and a female connector, which are considered as ISO 80369-3, are connected.

In one form of the female connector of the present invention, the liquid-tight seal may be formed between the outer peripheral surface of the cylindrical portion and the inner peripheral surface of the male member. Such a preferred form is advantageous for forming a liquid tight seal with a simple construction.

A male taper surface whose outer diameter decreases as it approaches the tip may be provided on the outer peripheral surface of the cylindrical portion. In this case, the liquid-tight seal may be formed between the male tapered surface and the inner peripheral surface of the male member. Such a preferred form is advantageous for easily forming a liquid-tight seal with a simple configuration.

The cylindrical portion may be made of a soft material. Such a preferable form is advantageous for relaxing the accuracy of the cylindrical portion and improving the liquid tightness of the seal.

In one form of the female connector of the present invention, an annular protrusion that is continuous in the circumferential direction may be provided on the outer peripheral surface of the cylindrical portion. In this case, the liquid-tight seal may be formed between the annular protrusion and the inner peripheral surface of the male member. Such a preferable form is also advantageous for forming a liquid-tight seal with a simple structure.

In the above, the annular protrusion may be an O-ring attached to the outer peripheral surface of the cylindrical portion. Such a preferable form is advantageous for easily manufacturing the annular protrusion forming the liquid-tight seal using a general-purpose member.

When the liquid-tight seal is formed, the inner peripheral surface of the tubular portion and the outer peripheral surface of the male member do not need to be liquid-tightly fitted. Such a configuration is advantageous in improving the liquid-tightness of the seal between the tubular portion and the male member and relaxing the accuracy of the inner peripheral surface of the tubular portion.

When the liquid-tight seal is formed, the inner peripheral surface of the tubular portion and the outer peripheral surface of the male member may be separated from each other. Such a configuration is advantageous in improving the liquid-tightness of the seal between the tubular portion and the male member and relaxing the accuracy of the inner peripheral surface of the tubular portion.

A slit may be provided in the tubular part so that the tubular part can be elastically deformed so that the diameter of the tubular part is expanded. Such a configuration is advantageous in improving the liquid-tightness of the seal between the tubular portion and the male member and relaxing the accuracy of the inner peripheral surface of the tubular portion.

The tubular portion may be made of a soft material. Such a configuration is advantageous for improving the liquid tightness of the seal between the tubular portion and the male member and for relaxing the accuracy of the tubular portion.

The inner peripheral surface of the tubular portion may be configured to be fluid-tightly fitted to the outer peripheral surface of the male member when the liquid-tight seal is formed. Such a configuration is advantageous in preventing the liquid material from leaking to the outside through a slight gap between the female connector and the male connector when the pressure of the liquid material increases. Further, a connection tool that does not include a screw lock mechanism for maintaining the connection state between the female connector and the male connector is advantageous in stably maintaining the connection state between the female connector and the male connector.

The male connector may further include an outer cylinder surrounding the male member and a female screw provided on the outer cylinder so as to face the male member. In this case, the female connector may further include a screw-like protrusion provided on the outer peripheral surface of the tubular portion so as to be screwed into the female screw. Such a preferable form is advantageous in applying the present invention to a connector having a screw lock mechanism represented by ISO 80369-3. In addition, after separating the female connector and the male connector, the liquid material flows into the gap between the male member and the outer cylinder, which is advantageous in preventing the occurrence of a situation in which the male connector reaches an unsanitary state.

Hereinafter, the present invention will be described in detail while showing preferred embodiments. However, it goes without saying that the present invention is not limited to the following embodiments. Each drawing referred to in the following description shows simplified main members constituting an embodiment of the present invention for convenience of description. Therefore, the present invention can include any member not shown in the following drawings. Further, within the scope of the present invention, each member shown in the following drawings can be changed or omitted.

(Embodiment 1)
1A is a perspective view of a female connector 1 according to Embodiment 1 of the present invention, and FIG. 1B is a sectional view thereof. The female connector 1 includes a tubular portion 11 having a hollow cylindrical shape. The inner peripheral surface 12 of the tubular portion 11 is a tapered surface (so-called female tapered surface) whose inner diameter increases as it approaches the tip. A screw-shaped projection (male thread) 15 is provided on the outer peripheral surface of the tubular portion 11. These are substantially the same as the female connector 910 shown in FIGS. 12A and 12B, and preferably conform to ISO 80369-3.

As shown in FIG. 1B, the female connector 1 of this embodiment further includes a cylindrical portion 17 having a hollow cylindrical shape. A cylindrical portion 17 is provided at a portion (small diameter portion 13) having a relatively small inner diameter provided at the proximal end of the tubular portion 11. The tubular portion 17 is arranged coaxially with the tubular portion 11 so as to be surrounded by the tubular portion 11. The cylindrical part 17 and the tubular part 11 are spaced apart in the radial direction. The outer peripheral surface 18 of the cylindrical portion 17 is provided with a tapered surface (so-called male tapered surface) whose outer diameter decreases as it approaches the tip.

In this embodiment, the female connector 1 is provided as a tube tip (nozzle) at the tip of an outer tube 9 of a syringe (injector). However, the present invention is not limited to this. The female connector of this invention can be provided in arbitrary members. For example, the female connector may be provided at the end of the flexible tube. The configuration on the side opposite to the female connector 1 (upper side in FIG. 1B) with respect to the small-diameter portion 13 can be arbitrarily changed.

The female connector 1 is preferably made of a hard material, and there is no limitation. For example, polycarbonate, polypropylene, polyacetal, polyamide, hard polyvinyl chloride, polyethylene, styrene ethylene, polyethylene terephthalate, polybutylene terephthalate, butylene styrene block copolymer Such resin materials can be used. The female connector 1 can be integrally manufactured as a single part by injection molding the resin material.

2A is a perspective view of the male connector 100, and FIG. 2B is a cross-sectional view thereof. The male connector 100 is compliant with ISO 80369-3, like the male connector 920 shown in FIGS. 13A and 13B. In FIG. 2A and FIG. 2B, the same code | symbol is attached | subjected to the same component as the component of the male connector 920 shown to FIG. 13A and FIG. 13B, and description about them is abbreviate | omitted. The male connector 100 includes a connection portion 102 at the end opposite to the male member 921.

2B, the connecting portion 102 communicates with a flow path 927 formed in the male member 921, and an inner peripheral surface thereof is a cylindrical surface coaxial with the male member 921. Although not shown, a flexible tube is inserted and fixed in the connecting portion 102. The tube may be a catheter (nasal catheter, PEG catheter, etc.) placed in the patient. Alternatively, the tube may be a tube connected to the catheter. A pair of grip portions 105 sandwich the connection portion 102 so that an operator can easily hold the male connector 100. The male connector 100 is merely an example, and in particular, the shape of a part not defined by ISO 80369-3 can be arbitrarily changed. For example, the shape of the grip part 105 may be changed, or the grip part 105 may be omitted. Instead of the tube being inserted into the connecting portion 102, the connecting portion 102 may be configured to be inserted into the tube.

FIG. 3A is a perspective view showing a state in which the female connector 1 is connected to the male connector 100, and FIG. 3B is a sectional view thereof. As shown in FIG. 3B, the cylindrical portion 17 of the female connector 1 is inserted into the male member 921 of the male connector 100. As described above, the outer peripheral surface 18 of the cylindrical portion 17 is provided with a tapered male taper surface, and the inner peripheral surface 928 of the male member 921 is a cylindrical surface. The minimum outer diameter on the distal end side of the male tapered surface of the cylindrical portion 17 is smaller than the inner diameter of the inner peripheral surface 928 of the male member 921, and the maximum outer diameter on the proximal end side of the male tapered surface is smaller than the inner diameter of the inner peripheral surface 928. large. Therefore, the male taper surface of the cylindrical portion 17 and the distal end portion of the inner peripheral surface 928 of the male member 921 (that is, the edge of the distal end side opening of the flow path 927) are fitted, and a liquid-tight seal 19 is formed between them. It is formed. As a result, the cylindrical portion 17 and the male member 921 are in fluid-tight communication.

The male member 921 of the male connector 100 is inserted into the tubular portion 11 of the female connector 1. The tubular portion 11 is inserted into a gap 926 between the male member 921 and the outer cylinder 923. The screw-like protrusion 15 and the female screw 925 are screwed together.

In a state where the female connector 1 and the male connector 100 are connected as shown in FIG. 3A and FIG. 3B, the liquid material (for example, enteral nutrient) moves from the female connector 1 to the male connector 100 (from top to bottom in FIG. 3B). E). As can be seen by comparing FIG. 3B with FIG. 14, in this embodiment, since the liquid-tight seal 19 is formed between the tubular portion 17 and the male member 921, the tubular portion 11 and the tubular portion 17. The liquid material does not flow into the space 1a surrounded by the male member 921. For this reason, after that, when the female connector 1 and the male connector 100 are separated, the liquid material does not adhere to the proximal inner peripheral surface 12a of the tubular portion 11 and the distal outer peripheral surface 922a of the male member 921. Therefore, compared with the case where the female connector 910 shown in FIG. 12A and FIG. 12B is used, the amount of liquid material adhering to the female connector 1 and the male connector 100 is reduced after the female connector 1 and the male connector 100 are separated. be able to.

For this reason, it becomes possible to administer the liquid as measured to the patient. When the liquid contains a drug, the dose of the drug to the patient can be managed with high accuracy, and an expensive drug is not wasted.

As described above, when the conventional female connector 910 (see FIGS. 12A and 12B) is used, the outer peripheral surface 922a of the male member 921 of the male connector 920 after the female connector 910 is separated (see FIGS. 13A and 13B). ) Adheres to the liquid. The liquid material may flow into a gap 926 (see FIGS. 13A and 13B) between the male member 921 and the outer cylinder 923. Since the gap between the outer peripheral surface 922 of the male member 921 and the female screw 925 of the outer cylinder 923 is very narrow, it is difficult to wipe off the liquid material flowing into the gap 926 by inserting, for example, a cotton swab into the gap 926. is there. If the male connector 920 is provided at the upstream end of the PEG catheter inserted into the patient, the male connector 920 will remain in the patient with the PEG catheter for an extended period of 1-3 months. If the male connector 920 in which the liquid substance remains in the gap 926 is kept in the patient for such a long period of time, the male connector 920 can be in an unsanitary state. Finally, bacteria may propagate in the male connector 920, and the bacteria may enter the patient's body and cause serious complications. On the other hand, when the female connector 1 of the present embodiment is used, the liquid material does not adhere to the distal end outer peripheral surface 922a (see FIGS. 2A and 2B) of the male connector 100 after the female connector 1 is separated. For this reason, the liquid material flows into the gap 926 between the male member 921 and the outer cylinder 923, and occurs when the female connector 910 (see FIGS. 12A and 12B) is used in which the male connector reaches an unsanitary state. The above-mentioned problem that can be solved is solved.

In the above example, the entire female connector 1 is made of the same material (for example, hard material), but the present invention is not limited to this. For example, you may comprise the cylindrical part 17 with a soft material. The soft material is not limited, but resin materials such as polypropylene (PP) and polyethylene (PE), rubbers such as natural rubber, isoprene rubber, and silicone rubber, styrene elastomers, olefin elastomers, polyurethane elastomers A material having rubber elasticity (also called an elastomer) such as a thermoplastic elastomer such as a vinyl chloride elastomer can be used. Portions other than the cylindrical portion 17 (hereinafter referred to as “main body portion”) of the female connector 1 can be made of the hard material described above. The method for combining the cylindrical portion 17 and the main body portion, which are made of different materials, is not limited, but the method of integrating the cylindrical portion 17 and the main body portion by two-color molding (two-color molding method), After manufacturing the main body separately, a method (connection method) of connecting the two in a liquid-tight manner can be used. As a method of connecting the cylindrical portion 17 and the main body portion separately manufactured in the connection method, any method such as a method using an adhesive or a method of fusing can be used. The cylindrical portion 17 made of a soft material is advantageous for reducing the accuracy of the cylindrical portion 17 and improving the liquid tightness of the seal 19.

The fact that the outer peripheral surface 18 of the cylindrical portion 17 has a male tapered surface is a simple configuration, and a liquid-tight seal 19 between the outer peripheral surface 18 of the cylindrical portion 17 and the inner peripheral surface 928 of the male member 921. Is advantageous in that it can be easily formed. However, the outer peripheral surface 18 may have a shape other than the male tapered surface. For example, the outer peripheral surface 18 of the cylindrical portion 17 may be a cylindrical surface having a constant outer diameter in the longitudinal direction. In this case, if the accuracy of the outer peripheral surface 18 is appropriately managed, the outer peripheral surface 18 of the cylindrical portion 17 and the inner peripheral surface 928 of the male member 921 are brought into surface contact with each other to form a liquid-tight seal therebetween. Is possible. In order to improve the liquid tightness of the seal, it is advantageous to form the cylindrical portion 17 with the soft material described above.

When the seal 19 is formed between the male tapered surface provided on the outer peripheral surface 18 of the cylindrical portion 17 and the tip portion of the inner peripheral surface 928 of the male member 921 (see FIG. 3B), the inner peripheral surface of the tubular portion 11 (Female taper surface) 12 may or may not be liquid-tightly fitted to the outer peripheral surface (male taper surface) 922 of the male member 921.

In the first configuration example, the inner peripheral surface 12 of the tubular portion 11 and the outer peripheral surface 922 of the male member 921 are liquid-tight almost simultaneously with the formation of the seal 19 between the tubular portion 17 and the male member 921. They are fitted and a liquid-tight seal is formed between them. In the first configuration example, since a plurality of seals are formed between the female connector 1 and the male connector 100, when the pressure of the liquid material rises, the liquid material is between the female connector 1 and the male connector 100. It is advantageous to prevent leaking to the outside through a slight gap.

In the first configuration example described above, the fitting between the cylindrical portion 17 and the male member 921 and the fitting between the inner peripheral surface 12 and the outer peripheral surface 922 need to be realized at the same time. It is difficult to realize the other fitting after that. Therefore, in the second configuration example, when the seal 19 is formed between the tubular portion 17 and the male member 921, the inner peripheral surface 12 of the tubular portion 11 and the outer peripheral surface 922 of the male member 921 are slightly separated from each other. For example, the inner peripheral surface 12 and the outer peripheral surface 922 are not liquid-tightly fitted. Such a second configuration example is advantageous for reducing the accuracy of the inner peripheral surface 12 and improving the liquid tightness of the seal 19 (see Embodiments 4 and 5 described later).

(Embodiment 2)
FIG. 4 is a cross-sectional perspective view of the female connector 2 according to Embodiment 2 of the present invention. In the drawings cited in the following description, members corresponding to the members shown in the drawings cited in the first embodiment are denoted by the same reference numerals as those in the drawings of the first embodiment. About such a member, the overlapping description is abbreviate | omitted in this embodiment, and the description of Embodiment 1 should be taken into consideration suitably. Hereinafter, the second embodiment will be described with a focus on differences from the first embodiment.

In the female connector 2 of the second embodiment, an annular protrusion 21 is provided on the outer peripheral surface 28 of the cylindrical portion 17. The annular protrusion 21 is continuous in the circumferential direction of the cylindrical portion 17 and protrudes toward the tubular portion 11. In the present embodiment, the annular protrusion 21 is composed of an O-ring. The O-ring 21 is fitted in an annular groove 28 a that is provided on the outer peripheral surface 28 of the cylindrical portion 17 and that is continuous in the circumferential direction.

As the O-ring constituting the annular protrusion 21, a general-purpose O-ring capable of forming a liquid-tight seal can be used. The material of the O-ring is not limited, but is preferably a soft material. For example, natural rubber, isoprene rubber, silicone rubber and the like, and heat such as styrene elastomer, olefin elastomer, polyurethane elastomer, vinyl chloride elastomer, etc. A material having rubber elasticity (also called an elastomer) such as a plastic elastomer can be used.

In this embodiment, the outer peripheral surface 28 of the cylindrical portion 17 is a tapered surface (so-called male tapered surface) whose outer diameter decreases as it approaches the tip, like the outer peripheral surface 18 of the first embodiment. However, in the present embodiment, the outer peripheral surface 28 does not need to be a male tapered surface, and may be a cylindrical surface whose outer diameter is constant in the longitudinal direction of the cylindrical portion 17, for example.

The female connector 2 can be connected to the male connector 100 (see FIG. 2A and FIG. 2B) as in the first embodiment. FIG. 5 is a cross-sectional view showing a state in which the female connector 2 is connected to the male connector 100. The cylindrical portion 17 of the female connector 2 is inserted into the male member 921 of the male connector 100. The outer peripheral surface 28 of the cylindrical portion 17 and the inner peripheral surface 928 of the male member 921 are separated in the radial direction due to the difference in diameter between the two. The annular protrusion 21 provided on the outer peripheral surface 28 of the cylindrical portion 17 is in close contact with the inner peripheral surface 928 of the male member 921, and a liquid-tight seal 29 is formed between the annular protrusion 21 and the inner peripheral surface 928. . That is, the annular protrusion 21 liquid-tightly closes the gap between the outer peripheral surface 28 and the inner peripheral surface 928. As a result, the cylindrical portion 17 and the male member 921 are in fluid-tight communication.

Similarly to the first embodiment, in a state where the female connector 2 and the male connector 100 are connected as shown in FIG. 5, the liquid material (for example, enteral nutrient) is transferred from the female connector 2 to the male connector 100 (upper in FIG. 5). From the bottom). Similarly to the first embodiment, since the liquid-tight seal 29 is formed between the tubular portion 17 and the male member 921, the space 2a surrounded by the tubular portion 11, the tubular portion 17, and the male member 921. Liquid material does not flow into. For this reason, after that, when the female connector 2 and the male connector 100 are separated, the liquid material does not adhere to the proximal inner peripheral surface 12a of the tubular portion 11 and the distal outer peripheral surface 922a of the male member 921. Therefore, compared with the case where the female connector 910 shown in FIGS. 12A and 12B is used, the amount of the liquid material attached to the female connector 2 and the male connector 100 is reduced after the female connector 2 and the male connector 100 are separated. The same effects as those of the first embodiment can be obtained.

The annular protrusion 21 can be configured by a member other than the O-ring. For example, the annular protrusion 21 can be provided integrally with the cylindrical portion 17 on the outer peripheral surface of the cylindrical portion 17 by the two-color molding method or the like using the soft material described in the first embodiment. This configuration eliminates the need for attaching an O-ring to the cylindrical portion 17.

The cylindrical portion 17 may be made of a soft material. Furthermore, you may comprise the whole cylindrical part 17 containing the cyclic | annular protrusion 21 with a soft material. In these cases, as the soft material, the same material as the soft material described in the first embodiment can be used, and as described in the first embodiment, the cylindrical portion 17 made of the soft material is used as the female connector 2. This is combined with a portion (main body portion) other than the cylindrical portion 17.

Two or more annular protrusions 21 may be provided at different positions in the longitudinal direction of the cylindrical portion 17. In this case, each annular protrusion 21 may be in close contact with the inner peripheral surface 928 of the male member 921 to form the liquid-tight seal 29. This configuration is advantageous in reducing the possibility that the liquid material leaks into the space 2a even when the pressure of the liquid material increases.

When the liquid-tight seal 29 is formed between the tubular portion 17 and the male member 921 (see FIG. 5), the inner peripheral surface (female taper surface) 12 of the tubular portion 11 is the outer peripheral surface (male taper surface) of the male member 921. ) It may or may not fit liquid-tightly with 922. When the inner peripheral surface 12 and the outer peripheral surface 922 are fitted in a liquid-tight manner, a liquid-tight seal is also formed between the inner peripheral surface 12 and the outer peripheral surface 922. In such a configuration, since a plurality of seals are formed between the female connector 2 and the male connector 100, when the pressure of the liquid material rises, the liquid material becomes a slight gap between the female connector 2 and the male connector 100. It is advantageous to prevent leakage to the outside world through the. When the annular protrusion 21 is made of a soft material, the seal 29 at the annular protrusion 21 and the seal between the inner peripheral surface 12 and the outer peripheral surface 922 can be simultaneously realized with relatively loose accuracy.

The annular protrusion 21 of the second embodiment may be applied to the female connector 1 of the first embodiment. In this case, a plurality of liquid-tight seals 19 and 29 are formed between the tubular portion 17 and the male member 921. This configuration is advantageous in reducing the possibility that the liquid material leaks into the space 1a even when the pressure of the liquid material increases.

The second embodiment is the same as the first embodiment except for the above. The description of the first embodiment can be appropriately applied to the second embodiment.

(Embodiment 3)
FIG. 6 is a cross-sectional view illustrating a state in which the female connector 3 according to Embodiment 3 of the present invention is connected to the male connector 130. In the drawings cited in the following description, members corresponding to the members shown in the drawings cited in the first embodiment are denoted by the same reference numerals as those in the drawings of the first embodiment. About such a member, the overlapping description is abbreviate | omitted in this embodiment, and the description of Embodiment 1 should be taken into consideration suitably. Hereinafter, the third embodiment will be described focusing on differences from the first embodiment.

The female connector 3 according to the third embodiment is different from the female connector 1 according to the first embodiment in that a screw-shaped protrusion 15 (see FIGS. 1A and 1B) is not provided on the outer peripheral surface of the tubular portion 11. In addition, the male connector 130 is not provided with the outer cylinder 923 and the female screw 925, and therefore, the male connector 100 (see FIGS. 2A and 2B) shown in the first and second embodiments and the male connector conforming to ISO80369-3. Different from 920 (see FIGS. 13A and 13B). That is, the third embodiment does not include a screw lock mechanism for maintaining the state where the female connector 3 and the male connector 130 are connected.

As shown in FIG. 6, the cylindrical portion 17 of the female connector 3 is inserted into the male member 921 of the male connector 130. The outer peripheral surface 18 of the cylindrical part 17 is provided with a tapered male taper surface, and the inner peripheral surface 928 of the male member 921 is a cylindrical surface. Therefore, as in the first embodiment, the male tapered surface of the cylindrical portion 17 and the tip end portion of the inner peripheral surface 928 of the male member 921 (that is, the edge of the opening on the tip end side of the flow path 927) are fitted, A liquid-tight seal 39 is formed. As a result, the cylindrical portion 17 and the male member 921 are in fluid-tight communication.

The male member 921 of the male connector 130 is inserted into the tubular portion 11 of the female connector 3.

In a state where the female connector 3 and the male connector 130 are connected as shown in FIG. 6, a liquid material (for example, enteral nutrient) flows from the female connector 3 to the male connector 130 (from top to bottom in FIG. 6). It is. Similarly to the first embodiment, since the liquid-tight seal 39 is formed between the tubular portion 17 and the male member 921, the space 3a surrounded by the tubular portion 11, the tubular portion 17, and the male member 921. Liquid material does not flow into. For this reason, after that, when the female connector 3 and the male connector 130 are separated, the liquid material does not adhere to the proximal inner peripheral surface 12a of the tubular portion 11 and the distal outer peripheral surface 922a of the male member 921. Therefore, compared with the case where the female connector 910 shown in FIGS. 12A and 12B is used, the amount of liquid material attached to the female connector 3 and the male connector 130 is reduced after the female connector 3 and the male connector 130 are separated. be able to. For this reason, similarly to Embodiment 1, it becomes possible to administer the liquid as measured to the patient.

In the third embodiment, when the liquid-tight seal 39 is formed between the tubular portion 17 and the male member 921, the inner peripheral surface 12 of the tubular portion 11 and the outer peripheral surface 922 of the male member 921 are liquid-tight. It may or may not be fitted. The liquid-tight fitting between the inner peripheral surface 12 and the outer peripheral surface 922 is advantageous for stable maintenance of the connection state between the female connector 3 and the male connector 130.

The third embodiment is the same as the first embodiment except for the above. The description of the first embodiment can be appropriately applied to the third embodiment.

Although not shown, the annular protrusion 21 described in the second embodiment may be provided on the cylindrical portion 17 of the female connector 3 of the third embodiment. In this case, the annular protrusion 21 is in close contact with the inner peripheral surface 928 of the male member 921, and a liquid-tight seal 29 (see FIG. 5) is formed between the annular protrusion 21 and the inner peripheral surface 928. The description of the second embodiment is appropriately applied to the female connector 3 provided with the annular protrusion 21.

(Embodiment 4)
FIG. 7 is a cross-sectional view of the female connector 4 according to Embodiment 4 of the present invention. In the drawings cited in the following description, members corresponding to the members shown in the drawings cited in the first embodiment are denoted by the same reference numerals as those in the drawings of the first embodiment. About such a member, the overlapping description is abbreviate | omitted in this embodiment, and the description of Embodiment 1 should be taken into consideration suitably. Hereinafter, the fourth embodiment will be described focusing on differences from the first embodiment.

In the female connector 4 of the fourth embodiment, the inner peripheral surface 42 of the tubular portion 11 is a cylindrical surface having a constant inner diameter in the longitudinal direction of the tubular portion 11 (that is, the vertical direction in FIG. 7). The inner diameter of the inner peripheral surface 42 is larger than the maximum outer diameter of the outer peripheral surface 922 of the male member 921 of the male connector 100 (see FIGS. 2A and 2B) connected to the female connector 4.

The female connector 4 can be connected to the male connector 100 (see FIG. 2A and FIG. 2B) as in the first embodiment. FIG. 8 is a cross-sectional view showing a state in which the female connector 4 is connected to the male connector 100. Similar to the first embodiment, the cylindrical portion 17 of the female connector 4 is inserted into the male member 921 of the male connector 100. The male taper surface provided on the outer peripheral surface 18 of the cylindrical portion 17 and the distal end portion of the inner peripheral surface 928 of the male member 921 (that is, the end edge of the opening on the front end side of the flow path 927) are fitted, and a liquid is interposed therebetween. A tight seal 19 is formed. As a result, the cylindrical portion 17 and the male member 921 are in fluid-tight communication. The screw-shaped protrusion 15 of the female connector 4 is screwed into the female screw 925 of the male connector 100.

Unlike Embodiment 1, since the inner peripheral surface 42 of the tubular part 11 is larger than the outer diameter of the outer peripheral surface 922 of the male member 921, the inner peripheral surface 42 and the outer peripheral surface 922 are spaced apart in the radial direction.

Unlike the fourth embodiment, when the inner peripheral surface of the tubular portion 11 is the inner peripheral surface 912 of the female connector 910 shown in FIGS. 12A and 12B, the inner surface of the outer peripheral surface 18 of the cylindrical portion 17 and the male member 921 There is a possibility that the inner peripheral surface 912 and the outer peripheral surface 922 are fitted before the peripheral surface 928 is fitted. In that case, since the male member 921 cannot be inserted deeper into the tubular portion 11, a liquid-tight seal 19 is formed between the outer peripheral surface 18 of the tubular portion 17 and the inner peripheral surface 928 of the male member 921. It is not possible. As described as the first configuration example in the first embodiment, the outer peripheral surface 18 of the tubular portion 17 and the inner peripheral surface 928 of the male member 921 are fitted together, and at the same time, the inner peripheral surface 912 and the outer peripheral surface 922 are Although fitting is possible, in order to implement | achieve this, each fitting part needs to have a high precision.

In the fourth embodiment, the inner peripheral surface 42 of the tubular portion 11 does not fit into the outer peripheral surface 922 of the male member 921. The inner peripheral surface 42 does not adversely affect the formation of the seal 19 and its liquid tightness. The inner peripheral surface 42 generates a coupling force of the male connector 100 to the female connector 4 (force that pulls the male connector 100 toward the female connector 4) generated by screwing the female screw 925 into the screw-shaped protrusion 15. Since it can make it act on the fitting part of the outer peripheral surface 18 of the shape part 17 and the inner peripheral surface 928 of the male member 921, it improves the liquid-tightness of the seal 19 formed in the fitting part. Is advantageous. In addition, the accuracy of the inner peripheral surface 42 of the tubular portion 11 is advantageous compared to the inner peripheral surface 912.

In the above example, the inner peripheral surface 42 of the tubular portion 11 is a cylindrical surface having a constant inner diameter, but the present invention is not limited to this. For example, the inner peripheral surface 42 may be a tapered surface (so-called female tapered surface) whose inner diameter increases as it approaches the tip. However, when the liquid-tight seal 19 is formed between the outer peripheral surface 18 of the cylindrical portion 17 and the inner peripheral surface 928 of the male member 921, the inner peripheral surface 42 is fitted to the outer peripheral surface 922 of the male member 921. To prevent this, the inner diameter of the female taper surface of the inner peripheral surface 42 needs to be set larger than the outer diameter of the outer peripheral surface 922 of the male member 921.

As described above, in the fourth embodiment, when the liquid-tight seal 19 is formed between the tubular portion 17 and the male member 921, the inner peripheral surface 42 of the tubular portion 11 and the outer peripheral surface 922 of the male member 921 are The inner peripheral surface 42 of the tubular portion 11 is configured so as to be separated (that is, not fitted). Thereby, the liquid-tightness of the seal | sticker 19 formed between the cylindrical part 17 and the male member 921 can be improved.

The liquid material flows through the cylindrical portion 17 and the male member 921 that are in fluid-tight communication. Since the seal 19 is formed, the liquid material passes between the tubular portion 17 and the male member 921 and adheres to the proximal inner peripheral surface 12a of the tubular portion 11 and the distal outer peripheral surface 922a of the male member 921. , It does not flow into the gap 926. Therefore, the fourth embodiment has the same effect as the first embodiment.

The inner peripheral surface 42 of the fourth embodiment may be applied to the female connectors 2 and 3 of the second and third embodiments.

Embodiment 4 is the same as Embodiment 1 except for the above. The description of the first embodiment can be appropriately applied to the fourth embodiment.

(Embodiment 5)
FIG. 9A is a perspective view of a female connector 5 according to Embodiment 5 of the present invention, and FIG. 9B is a sectional view thereof. In the drawings cited in the following description, members corresponding to the members shown in the drawings cited in the first embodiment are denoted by the same reference numerals as those in the drawings of the first embodiment. About such a member, the overlapping description is abbreviate | omitted in this embodiment, and the description of Embodiment 1 should be taken into consideration suitably. Hereinafter, the fifth embodiment will be described focusing on differences from the first embodiment.

In the female connector 5 of the fifth embodiment, two slits 51 are provided in the tubular portion 11. The slit 51 extends from the distal end of the tubular portion 11 to the proximal end portion of the tubular portion 11 in parallel with the longitudinal direction of the tubular portion 11 (that is, the central axis direction of the female connector 5). The two slits 51 are arranged symmetrically with respect to the tubular portion 17 in a region where the screw-like protrusion 15 of the tubular portion 11 is not provided. Since the tubular portion 11 is provided with the slit 51, the tubular portion 11 can be elastically bent and deformed in the direction of the arrow A in FIG. 9B, and the circumferential curvature of the inner peripheral surface 12 increases. Thus, it can be elastically deformed. When the tubular portion 11 is deformed in this way, the tubular portion 11 is expanded in diameter, and the inner diameter of the inner peripheral surface 12 is increased.

The female connector 5 can be connected to the male connector 100 (see FIG. 2A and FIG. 2B) as in the first embodiment. FIG. 10 is a cross-sectional view showing a state where the female connector 5 is connected to the male connector 100. The cross section of FIG. 10 passes through the slit 51 and is orthogonal to the cross section of FIG. 9B. Similar to the first embodiment, the cylindrical portion 17 of the female connector 5 is inserted into the male member 921 of the male connector 100. The male taper surface of the outer peripheral surface 18 of the cylindrical portion 17 and the distal end portion of the inner peripheral surface 928 of the male member 921 (that is, the edge of the opening on the distal end side of the flow path 927) are fitted, and a liquid-tight seal is provided between them. 19 is formed. As a result, the cylindrical portion 17 and the male member 921 are in fluid-tight communication. Although not shown in FIG. 10, the screw-like protrusion 15 of the female connector 4 is screwed into the female screw 925 of the male connector 100.

In the process of connecting the female connector 5 to the male connector 100, the inner peripheral surface 12 of the tubular portion 11 is male before the outer peripheral surface 18 of the tubular portion 17 and the inner peripheral surface 928 of the male member 921 are fitted. It may collide with the outer peripheral surface 922 of the member 921. Even in such a case, since the tubular portion 11 can be elastically deformed so as to expand, the male member 921 can be inserted deeper into the tubular portion 11. Therefore, the outer peripheral surface 18 of the cylindrical portion 17 and the inner peripheral surface 928 of the male member 921 can be fitted to form a liquid-tight seal 19 therebetween. Further, the accuracy of the inner peripheral surface 12 of the tubular portion 11 can be relaxed.

In the fifth embodiment, the inner peripheral surface of the tubular portion 11 may be the inner peripheral surface 912 of the female connector 910 shown in FIGS. 12A and 12B. Even in this case, the liquid-tight seal 19 can be formed between the tubular portion 17 and the male member 921 by deforming the tubular portion 11 as described above.

In the fifth embodiment, the number, arrangement, and size (width, depth) of the slits 51 are not limited to the above example, and are arbitrary. From the viewpoint of facilitating deformation of the tubular portion 11, the number of slits 51 is preferably 2 or more, and more preferably 3 or more. In this case, the plurality of slits 51 are preferably arranged at equal intervals in the circumferential direction. Regarding the depth of the slit 51, as shown in FIG. 10, the slit 51 extends to the small diameter portion 13 side from the region where the male member 921 will contact when the seal 19 is formed. Preferably it is.

The liquid material flows through the cylindrical portion 17 and the male member 921 that are in fluid-tight communication. Since the seal 19 is formed, the liquid material passes between the tubular portion 17 and the male member 921 and adheres to the proximal inner peripheral surface 12a of the tubular portion 11 and the distal outer peripheral surface 922a of the male member 921. , It does not flow into the gap 926. Therefore, the fifth embodiment has the same effect as the first embodiment.

The slit 51 of the fifth embodiment may be applied to the female connectors 2 to 4 of the second to fourth embodiments. When the slit 51 is applied to the female connector 3 (see FIG. 6) of the third embodiment, the tubular portion 17 and the male member are fitted while the inner peripheral surface 12 of the tubular portion 11 and the outer peripheral surface 922 of the male member 921 are fitted. The liquid-tight seal 39 can be reliably formed between the nozzles 921.

The fifth embodiment is the same as the first embodiment except for the above. The description of the first embodiment can be appropriately applied to the fifth embodiment.

(Embodiment 6)
FIG. 11 is a cross-sectional view of the female connector 6 according to Embodiment 6 of the present invention. In the drawings cited in the following description, members corresponding to the members shown in the drawings cited in the first embodiment are denoted by the same reference numerals as those in the drawings of the first embodiment. About such a member, the overlapping description is abbreviate | omitted in this embodiment, and the description of Embodiment 1 should be taken into consideration suitably. Hereinafter, the sixth embodiment will be described focusing on differences from the first embodiment.

In the female connector 6 according to the sixth embodiment, the tubular portion 61 including the screw-shaped protrusion 15 is made of a material that is relatively softer than the material that forms a portion other than the tubular portion 61. Although there is no restriction | limiting as a soft material which comprises the tubular part 61, The same soft material as described as a soft material which can comprise the cylindrical part 17 in Embodiment 1 can be used.

The tubular portion 61 made of a soft material is integrated as one part with the other portions of the female connector 6. The method of integrating is not limited, but for example, the two-color molding method or the connection method described in Embodiment 1 can be used.

The female connector 6 can be connected to the male connector 100 (see FIGS. 2A and 2B) as in the first embodiment (see FIGS. 3A and 3B).

In the process of connecting the female connector 6 to the male connector 100, the inner peripheral surface 12 of the tubular portion 61 is male before the outer peripheral surface 18 of the tubular portion 17 and the inner peripheral surface 928 of the male member 921 are fitted. It may collide with the outer peripheral surface 922 of the member 921. Even in this case, the tubular portion 61 made of a soft material receives the pressing force from the male member 921 and is appropriately elastically deformed, so that the male member 921 can be inserted deeper into the tubular portion 61. Therefore, similarly to the first embodiment, the outer peripheral surface 18 of the cylindrical portion 17 and the inner peripheral surface 928 of the male member 921 can be fitted to form a liquid-tight seal 19 therebetween.

In the sixth embodiment, the inner peripheral surface of the tubular portion 61 may be the inner peripheral surface 912 of the female connector 910 shown in FIGS. 12A and 12B. Even in this case, since the tubular portion 61 is appropriately deformed as described above, the liquid-tight seal 19 can be formed between the tubular portion 17 and the male member 921.

In the liquid-tight seal 19, the liquid material passes between the tubular portion 17 and the male member 921, and adheres to the proximal inner peripheral surface 12 a of the tubular portion 11 and the distal outer peripheral surface 922 a of the male member 921. It is prevented from flowing into the gap 926. Therefore, the sixth embodiment has the same effect as the first embodiment.

The tubular portion 61 can be brought into close contact with the outer peripheral surface 922 of the male member 921 while appropriately deforming according to the male member 921, and can form a liquid-tight seal with the outer peripheral surface 922. This seal is advantageous in preventing the liquid material leaking from the seal 19 between the cylindrical portion 17 and the male member 921 from leaking to the outside when the pressure of the liquid material increases.

Since the tubular part 61 can be deformed relatively easily, the accuracy of the tubular part 61 can be relaxed.

The tubular portion 61 made of a soft material according to the sixth embodiment may be applied to the female connectors 2 to 5 according to the second to fifth embodiments. Since the tubular part 11 of the female connector 3 of Embodiment 3 is made of a soft material, the tubular part 11 can be fitted to the male member 921, so that the connection state between the female connector 3 and the male connector 130 is stable. It is advantageous for maintenance.

The sixth embodiment is the same as the first embodiment except for the above. The description of the first embodiment can be appropriately applied to the sixth embodiment.

In the first to sixth embodiments, the liquid-tight seals 19, 29, and 39 are formed by inserting the cylindrical portion 17 into the male member 921 (FIGS. 3B, 5, 6, 8, and 8). (See FIG. 10). However, the present invention is not limited to this. For example, a liquid-tight seal may be formed between the distal end of the tubular portion 17 and the distal end of the male member 921 by butting the tubular portion 17 and the male member 921 in the longitudinal direction. Also in this case, the effect of the present invention is achieved. Furthermore, since the inner diameter of the cylindrical portion 17 can be made larger than those in the first to sixth embodiments, it is advantageous for suppressing a decrease in the flow resistance of the liquid material in the cylindrical portion 17. In order to improve the liquid-tightness of the seal formed between the tip of the cylindrical portion 17 and the tip of the male member 921, it is advantageous that at least the tip of the cylindrical portion 17 is made of the soft material. It is. In the configuration in which the cylindrical portion 17 and the male member 921 are butted to form a seal therebetween, in order to apply a compressive force between the cylindrical portion 17 and the male member 921, (1) the female connector and the male connector are screw-locked. It is preferable that a mechanism (screw-like projection 15 and female screw 925) is provided, or (2) that the tubular portion of the female connector is fitted to the male member of the male connector.

The female connector of the present invention may not conform to ISO80369-3. In addition, the male connector to which the female connector of the present invention is connected may not conform to ISO 80369-3.

Although this invention does not have a restriction | limiting, it can utilize as arbitrary female connectors provided with the tubular part which can insert the male member of a male connector. Among them, it can be preferably used as a medical female connector, and further as a female connector used when performing enteral nutrition, particularly as a female connector connected to a male connector based on ISO80369-3. The female connector of the present invention is suitable as a female connector connected to a male connector attached to an upstream end of a catheter inserted into a patient's body for performing enteral nutrition.

1, 2, 3, 4, 5, 6 Female connectors 11, 61 Tubular parts 12, 42 Inner peripheral surface 15 of tubular part 17 Spiral projection 17 Tubular part 18 Peripheral surface 19 of cylindrical part Liquid-tight seal 21 Annular projection (O-ring)
28 Outer peripheral surface 29 of the cylindrical portion 29 Liquid-tight seal 39 Liquid-tight seal 51 Slit 100, 130 Male connector 921 Male member 922 Male member outer peripheral surface 923 Outer cylinder 925 Female screw 928 Male member inner peripheral surface

Claims (12)

  1. A female connector that can be connected to a male connector having a cylindrical male member,
    A tubular part having a hollow cylindrical shape configured to be able to insert the male member;
    A cylindrical portion having a hollow cylindrical shape, arranged coaxially with the tubular portion and surrounded by the tubular portion;
    When the male member is inserted into the tubular portion, the tubular portion is formed with a liquid-tight seal between the tubular portion and the male member, and the tubular portion and the male member communicate with each other. A female connector characterized by being configured as described above.
  2. The female connector according to claim 1, wherein the liquid-tight seal is formed between an outer peripheral surface of the cylindrical portion and an inner peripheral surface of the male member.
  3. On the outer peripheral surface of the cylindrical part, a male taper surface is provided whose outer diameter decreases as it approaches the tip,
    The female connector according to claim 1 or 2, wherein the liquid-tight seal is formed between the male tapered surface and an inner peripheral surface of the male member.
  4. The female connector according to any one of claims 1 to 3, wherein the cylindrical portion is made of a soft material.
  5. An annular projection that is continuous in the circumferential direction is provided on the outer peripheral surface of the cylindrical portion,
    The female connector according to any one of claims 1 to 4, wherein the liquid-tight seal is formed between the annular protrusion and an inner peripheral surface of the male member.
  6. The female connector according to claim 5, wherein the annular protrusion is an O-ring mounted on an outer peripheral surface of the cylindrical portion.
  7. 7. The structure according to claim 1, wherein when the liquid-tight seal is formed, the inner peripheral surface of the tubular portion and the outer peripheral surface of the male member are not fitted in a liquid-tight manner. Female connector as described.
  8. The female connector according to any one of claims 1 to 7, wherein when the liquid-tight seal is formed, an inner peripheral surface of the tubular portion and an outer peripheral surface of the male member are separated from each other. .
  9. The female connector according to any one of claims 1 to 8, wherein a slit is provided in the tubular portion so that the tubular portion can be elastically deformed so that the diameter of the tubular portion is expanded.
  10. 10. The female connector according to claim 1, wherein the tubular portion is made of a soft material.
  11. The inner peripheral surface of the tubular portion is configured to fit in a liquid-tight manner with an outer peripheral surface of the male member when the liquid-tight seal is formed. Female connector as described.
  12. The male connector further includes an outer cylinder surrounding the male member and a female screw provided on the outer cylinder so as to face the male member, and the female connector is screwed into the female screw. The female connector according to any one of claims 1 to 11, further comprising a screw-like protrusion provided on an outer peripheral surface of the tubular portion.
PCT/JP2016/087167 2015-12-15 2016-12-14 Female connector WO2017104689A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2015-244431 2015-12-15
JP2015244431 2015-12-15
JP2016-164765 2016-08-25
JP2016164765A JP2017109075A (en) 2015-12-15 2016-08-25 Female connector

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US15/776,535 US20180326198A1 (en) 2015-12-15 2016-12-14 Female connector
KR1020187019703A KR20180094019A (en) 2015-12-15 2016-12-14 Female connector
CN201680073871.3A CN108367145A (en) 2015-12-15 2016-12-14 Female connector

Publications (1)

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WO2017104689A1 true WO2017104689A1 (en) 2017-06-22

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PCT/JP2016/087167 WO2017104689A1 (en) 2015-12-15 2016-12-14 Female connector

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WO (1) WO2017104689A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008521577A (en) * 2004-12-03 2008-06-26 メドラッド インコーポレーテッドMedrad,Inc. Fluid delivery system including a fluid passage set having a sterile check valve connector
JP2012522577A (en) * 2009-04-06 2012-09-27 ケアフュージョン 303、インコーポレイテッド Closed male luer device for use with needleless access devices

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008521577A (en) * 2004-12-03 2008-06-26 メドラッド インコーポレーテッドMedrad,Inc. Fluid delivery system including a fluid passage set having a sterile check valve connector
JP2012522577A (en) * 2009-04-06 2012-09-27 ケアフュージョン 303、インコーポレイテッド Closed male luer device for use with needleless access devices

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