Male connector and medical device

Abstract

The male connector according to the present disclosure is a male connector capable of being connected to a female connector provided with a resilient valve core, and is provided with a housing, a flow path tube member formed with an opening, and a valve core. The housing is provided with a housing main body and a moving body that deforms or moves the valve core in such a manner that the state changes between a first state in which the opening of the flow path tube member is closed by the valve core and a second state in which the opening of the flow path tube member is open from the valve core. The moving body is provided with a first locking portion capable of locking the female connector in the first state. The housing main body is provided with a second locking portion capable of locking the female connector in the second state.

Description

Technical Field

[0001] This disclosure relates to convex connectors and medical devices. Background Technology

[0002] When administering intravenous infusions to patients, a path (infusion tubing) needs to be created to deliver fluids such as medications. Infusion tubing is typically formed by connecting infusion tubing and other components. Furthermore, when injecting the medication or other fluid for the patient into a medication bag, the medication bag needs to be connected to a syringe or other component. In this way, male and female connectors are used to allow for the detachable connection and interlocking of different components.

[0003] The liquid contains drugs that are designated as highly toxic substances, such as anticancer agents. Medical workers need to take extra care when performing tasks such as assembling and disassembling male and female connectors to avoid such dangerous liquids or fluids adhering to their fingers.

[0004] Patent Document 1: International Publication No. 2018 / 056465

[0005] Patent Document 1 discloses a convex connector with a structure that prevents leakage of fluids such as medications to the outside when the connection with the concave connector is released. According to the convex connector described in Patent Document 1, it is possible to prevent liquids such as medications from adhering to the fingers of medical workers.

[0006] From the viewpoint of connection stability with the concave connector, the convex connector described in Patent Document 1 has room for further improvement. Summary of the Invention

[0007] The purpose of this disclosure is to provide a male connector that improves the connection stability with the female connector and can suppress leakage of fluids such as medicine to the outside when the connection with the female connector is released, as well as a medical device having the male connector.

[0008] The first aspect of the disclosed convex connector is a convex connector capable of connecting to a concave connector having a resilient valve core, and includes: a housing having a hollow portion; a flow path member extending within the hollow portion and having an opening formed at one end in the extending direction; and a valve core located within the hollow portion and capable of closing the opening of the flow path member. The housing includes: a housing body; and a moving body that, by moving relative to the housing body in the extending direction, causes the valve core to change its shape between a first form and a second form. The first form is where the opening of the flow path member is closed by the valve core, and the second form is where the opening of the flow path member is open from the valve core. The moving body has a first locking portion. In the first form, when the valve core abuts against the resilient valve core of the concave connector, the first locking portion can lock the concave connector. The housing body has a second locking portion. In the second form, when the first locking portion locks the concave connector, the second locking portion can lock the concave connector.

[0009] As one embodiment of this disclosure, the first locking portion of the moving body is provided only once in the circumferential direction of the flow path member, or multiple portions are provided at intervals.

[0010] As one embodiment of this disclosure, the first locking portion of the moving body can move radially in relation to the housing body in the extending direction.

[0011] As one embodiment of this disclosure, the second locking portion of the housing body is provided only once in the circumferential direction of the flow path member, or multiple portions are provided at intervals.

[0012] As one embodiment of this disclosure, if the state in which the second locking portion of the housing body locks the recessed connector is released, the moving body moves relative to the housing body in the extending direction by the restoring force of the deformed valve core or the force of the force-applying member that applies force to one end of the valve core or the moving body in the extending direction, and the shape changes from the second shape to the first shape.

[0013] As one embodiment of this disclosure, after the form changes from the second form to the first form, the moving body continues to move relative to the housing body in the extending direction by the restoring force or the force, thereby releasing the state in which the first locking part locks the recessed connector.

[0014] As one embodiment of this disclosure, the movable body includes a first movable body and a second movable body that are movable relative to each other in the extending direction. The second movable body is movable relative to the first movable body and the housing body in the extending direction when the first movable body is locked in a manner in which it does not move relative to the housing body in the extending direction.

[0015] The medical device according to the second aspect of this disclosure includes the aforementioned convex connector.

[0016] According to this disclosure, a convex connector can be provided to improve the connection stability with the concave connector and to suppress leakage of fluids such as medicine to the outside when the connection with the concave connector is released, as well as a medical device having the convex connector. Attached Figure Description

[0017] Figure 1 This is a perspective view showing a convex connector as an embodiment of the present disclosure and a concave connector that can be connected to the convex connector.

[0018] Figure 2 yes Figure 1 The side view of the convex connector and the concave connector before connection is shown.

[0019] Figure 3 From and Figure 2 Observed from different positions Figure 1 The side view of the convex connector and the concave connector before connection is shown.

[0020] Figure 4 It is along Figure 2 A sectional view along line II.

[0021] Figure 5 It is along Figure 3 A sectional view along line II-II.

[0022] Figure 6 It means Figure 1 The diagram shows a three-dimensional view of the housing body of the convex connector.

[0023] Figure 7 It means Figure 1 A perspective view of the first movable element of the convex connector shown.

[0024] Figure 8 yes Figure 1 An exploded perspective view of the flow path component, valve core, and second moving body of the convex connector shown.

[0025] Figure 9 It means Figure 1 The connection between the male and female connectors shown is as follows: Figure 4A sectional view at the same location.

[0026] Figure 10 It is aimed at Figure 9 The connection shown includes the male connector and the female connector in the middle of the connection. Figure 5 A sectional view at the same location.

[0027] Figure 11 It means Figure 1 The first connection state of the convex connector and the concave connector shown is related to Figure 4 , Figure 9 A sectional view at the same location.

[0028] Figure 12 It is aimed at Figure 11 The first connection state shown includes the male connector and the female connector. Figure 5 , Figure 10 A sectional view at the same location.

[0029] Figure 13 It means Figure 1 The second connection state of the convex connector and the concave connector shown is related to Figure 4 , Figure 9 , Figure 11 A sectional view at the same location.

[0030] Figure 14 It is aimed at Figure 13 The second connection state shown includes the male connector and the female connector. Figure 5 , Figure 10 , Figure 12 A sectional view at the same location.

[0031] Figure 15 This indicates that the second moving body is relative to... Figure 1 A diagram showing the movement of the first moving part of the convex connector.

[0032] Figure 16 This is a diagram showing a medical device as one embodiment of the present disclosure.

[0033] Figure 17 It means in Figure 1 The convex connector shown is connected to... Figure 1 The diagram shows the different states of the concave connector. Detailed Implementation

[0034] Hereinafter, embodiments of the convex connector and medical device involved in this disclosure will be described with reference to the accompanying drawings. Commonly used structures in the various figures are labeled with the same reference numerals.

[0035] Figure 1This is a perspective view showing a male connector 1, which is an embodiment of the male connector disclosed herein, and a female connector 2 that can be connected to the male connector 1. In this embodiment, the male connector 1 is, in a state where it is not connected to the female connector 2, the flow path tube body 46 (described later) of the Luer male connector. Figure 4 (etc.) So-called "closed convex connectors" that do not expose to the outside.

[0036] Figure 2 , Figure 3 yes Figure 1 The side view of the convex connector 1 and the concave connector 2 shown. Figure 2 , Figure 3 These are side views viewed from different positions. Figure 4 It is along Figure 2 A sectional view along line II. Figure 5 It is along Figure 3 A sectional view along line II-II. Figures 1-5 The convex connector 1 and concave connector 2 shown depict the state of each individual unit before they are interconnected (hereinafter referred to as the "pre-connection state"). Details will be described later. In this embodiment, the convex connector 1 and concave connector 2... Figure 1 In the state shown, connection can be achieved simply by bringing the flow path members 40 closer together in the extending direction A. Hereinafter, in the convex connector 1 and concave connector 2 according to this embodiment, the downstream side of the flow path in the infusion line, which contains fluids such as medication (…), will be connected. Figure 1 center right, Figures 2-5 The upper end of the infusion line is designated as the "distal side," referring to the upstream side of the fluid flow path within the infusion tubing. Figure 1 Center left Figures 2-5 The other end of the middle and lower part is recorded as the "proximal side".

[0037] like Figures 1-5 As shown, the convex connector 1 includes a housing 10, a flow path component 40, and a valve core 50. (As...) Figure 4 , Figure 5 As shown, the housing 10 is divided into a hollow portion 11. A flow path member 40 extends within the hollow portion 11 of the housing 10. Furthermore, an opening 42 is formed on the distal side of the flow path member 40 in the extending direction A. Figure 4 , Figure 5 As shown, the valve core 50 is located within the hollow portion 11 of the housing 10. Furthermore, as... Figure 4 As shown, the valve core 50 closes the opening 42 of the flow path member 40. Details will be described later; the convex connector 1 is capable of closing the opening 42 of the flow path member 40 in a first configuration (see reference). Figure 4 (etc.) and the valve core 50 open the opening 42 of the flow path component 40 in the second configuration (refer to) Figure 13 , Figure 14The changes in form between )

[0038] Hereinafter, the extension direction A of the flow path member 40 will be simply referred to as "extension direction A". In addition, the radial direction B of the imaginary circle around the central axis O of the flow path member 40 will be simply referred to as "radial B". Moreover, the circumferential direction C around the central axis O of the flow path member 40 will be simply referred to as "circumferential C".

[0039] like Figures 1-5 As shown, the recessed connector 2 includes a housing 60 and a resilient valve core 70. (As indicated...) Figure 4 , Figure 5 As shown, the housing 60 is divided into a convex connector insertion portion 61, which serves as a hollow section, and a flow path 66. A resilient valve core 70 is located near the proximal end of the convex connector insertion portion 61 of the housing 60, blocking the convex connector insertion portion 61. The top surface 72 of the resilient valve core 70 is exposed outside the concave connector 2. The flow path tube body 46 of the flow path tube member 40 of the convex connector 1 (described later) Figure 4 (etc.) Insert the convex connector insertion part 61 from the top surface 72 side of the elastic valve core 70.

[0040] The structures of the male connector 1 and the female connector 2 will now be described in detail. For ease of explanation, the housing 10 of the male connector 1 will be referred to as "first housing 10," and the housing 60 of the female connector 2 will be referred to as "second housing 60." Furthermore, for ease of explanation, the flow path 41 of the male connector 1 will be referred to as "first flow path 41," and the flow path 66 of the female connector 2 will be referred to as "second flow path 66."

[0041] <Convex Connector 1>

[0042] [First Shell 10]

[0043] The first housing 10 includes a housing body 20 and a movable body 30 that can move relative to the housing body 20. The hollow portion 11 of the first housing 10 is composed of a hollow portion 29 divided by the housing body 20 and a hollow portion 39 divided by the movable body 30.

[0044] [[Shell Body 20]]

[0045] Figure 6 This is a perspective view of the housing body 20. The housing body 20 includes a cylindrical portion 21 extending in the extending direction A and a locking claw portion 22 protruding from the cylindrical portion 21. The cylindrical portion 21 is divided into openings 21a extending radially through B at opposite positions in the radial direction B. Furthermore, a plurality of recesses 21c are formed on the distal end face of the cylindrical portion 21 in the extending direction A, recessed toward the proximal side. In this embodiment, four recesses 21c are formed on the aforementioned end face of the cylindrical portion 21 and are arranged separately in the circumferential direction C.

[0046] In addition, such as Figure 6 As shown, an elongated groove 21b extending along the extension direction A is formed on the inner surface of the cylindrical portion 21. The proximal end of the elongated groove 21b extends to the proximal end of the cylindrical portion 21 and opens at the proximal end of the cylindrical portion 21. In contrast, the distal end of the elongated groove 21b terminates at the position of the wall portion 21b1 formed on the inner surface of the cylindrical portion 21.

[0047] The locking claw part 22 includes a support part 22a, a claw body part 22b, and an operating part 22c.

[0048] The support portion 22a of the locking claw portion 22 protrudes radially outward from the cylindrical portion 21. In this embodiment, the support portion 22a supports the claw body portion 22b and the operating portion 22c. In this embodiment, the support portions 22a are provided at opposite positions in the radial direction B of the cylindrical portion 21. Specifically, in this embodiment, the two support portions 22a are arranged at the same position in the circumferential direction C as the two openings 21a of the cylindrical portion 21.

[0049] The claw body 22b protrudes distally from the support portion 22a in the extending direction A. The claw body 22b has a locking claw 22b1 protruding radially inward at its distal end, which is its front end portion. The claw body 22b is capable of swinging radially B with the support portion 22a as a fulcrum. As the claw body 22b swings radially B, the locking claw 22b1 also moves radially B. In this embodiment, the locking claw 22b1 of the claw body 22b... Figure 1 In the pre-connection state shown, it enters the opening 21a of the cylindrical part 21.

[0050] The distal end face of the locking claw 22b1 has an inclined surface 25a that slopes towards the proximal side in the extending direction A as it moves from the outer side of the radial direction B toward the inner side. In this embodiment, the inclined surface 25a extends to the inner end of the locking claw 22b1 in the radial direction B.

[0051] The proximal end face of the locking pawl 22b1 has a hook surface 25b that is substantially parallel to the radial direction B. In this embodiment, the hook surface 25b extends to the inner end of the locking pawl 22b1 in the radial direction B.

[0052] The operating part 22c protrudes from the support part 22a toward the proximal side in the extending direction A. The operating part 22c is capable of swinging radially B with the support part 22a as the fulcrum. By moving the operating part 22c to the inner side of radial B, the claw body part 22b moves radially outward with the support part 22a as the fulcrum. That is, by swinging the operating part 22c radially B, the claw body part 22b can be moved radially B.

[0053] [[30 moving units]]

[0054] The movable body 30 is movable relative to the housing body 20 along the extending direction A. By moving the movable body 30 relative to the housing body 20 along the extending direction A, the valve core can be deformed or moved (deformed in this embodiment) in a manner that changes its shape between a first shape and a second shape. The "first shape" is the shape in which the opening 42 of the flow path member 40 is closed by the valve core 50. For example... Figure 4 , Figure 5 As shown, in this embodiment, the valve core 50 covers one end of the flow path member 40 on the distal side of its extension direction A, closing the opening 42, thereby achieving the first form. The "second form" is the form in which the opening 42 of the flow path member 40 is open from the valve core 50. Details will be described later; in this embodiment, the flow path member 40 penetrates the valve core 50, and the opening 42 is exposed on the distal side beyond the valve core 50, thereby achieving the second form (see reference). Figure 13 , Figure 14 ).

[0055] The movable body 30 of this embodiment includes a first movable body 31 and a second movable body 32. The first movable body 31 and the second movable body 32 are capable of moving relative to each other in the extending direction A.

[0056] Figure 7 This is a perspective view of a single unit of the first movable body 31. The first movable body 31 has a cylindrical main body portion 31a and a locking claw portion 31b. The cylindrical main body portion 31a has a generally cylindrical shape. Figure 7 As shown, the main body 31a has an elongated hole 31a1 extending radially through B at an opposite position in the radial direction B. The elongated hole 31a1 is a relatively long opening in the extending direction A.

[0057] Furthermore, the main body 31a has a protrusion 31a2 protruding outward toward radial B at a position opposite to it in the radial direction B. For example... Figure 5 As shown, the protrusion 31a2 and the elongated groove 21b of the aforementioned housing body 20 (see reference) Figure 6 The protrusion 31a2 moves along the elongated groove 21b, thereby enabling the first movable body 31 to move relative to the housing body 20 in the extending direction A. The first movable body 31 can move relative to the housing body 20 in the extending direction A to the distal side, until the protrusion 31a2 and the wall 21b1 of the elongated groove 21b (see reference) Figure 6 The elongated groove 21b of the housing body 20 is a guide groove that guides the first moving body 31 to move in the extending direction A. Furthermore, the wall portion 21b1 of the elongated groove 21b of the housing body 20 is a movement limiting wall that abuts against the first moving body 31 and restricts the first moving body 31 from moving further to the distal side in the extending direction A.

[0058] The locking claw portion 31b protrudes radially outward from the main body portion 31a. More specifically, the locking claw portion 31b of this embodiment includes: an arm portion 31b1 protruding radially outward from the main body portion 31a in a direction inclined to the extension direction A; and a locking claw 31b2 protruding radially inward from the front end, i.e., the distal end, of the arm portion 31b1. The arm portion 31b1 can swing radially B with its base end, i.e., the proximal end, connected to the main body portion 31a as a fulcrum. A engaging surface 33 facing the proximal side of the extension direction A is provided on the radially outward surface of the arm portion 31b1. This engaging surface 33 engages with the distal end face of the housing body 20 in the extension direction A. More specifically, the engaging surface 33 of this embodiment abuts against and engages with a recess 21c formed on the distal end face of the housing body 20 in the extension direction A. The engaging surface 33 engages with the aforementioned end face of the housing body 20, thereby restricting the movement of the first moving body 31 relative to the proximal side of the housing body 20 in the extending direction A.

[0059] Figure 8 This is an exploded perspective view of the flow path component 40, valve core 50, and second moving body 32 of the convex connector 1. Figure 4 , Figure 5 , Figure 8 As shown, the second movable body 32 has a generally cylindrical outer cylinder portion 32a, an annular flange portion 32b, and an inner cylinder portion 32c.

[0060] A protrusion 32a1 protruding radially outward (B) is provided on the outer surface of the outer cylinder portion 32a. The protrusion 32a1 is positioned facing each other in the radial direction (B). The protrusion 32a1 engages with the elongated hole 31a1 of the first moving body 31. The protrusion 32a1 is movable within the elongated hole 31a1 in the extending direction (A). Therefore, the second moving body 32 is movable relative to the first moving body 31 in the extending direction (A) within the range where the protrusion 32a1 is movable within the elongated hole 31a1.

[0061] The flange portion 32b protrudes radially inward from the inner surface of the outer cylinder portion 32a. For example... Figure 4 , Figure 5As shown, the flange portion 32b abuts against the distal side of the flange portion 58 of the valve core 50. Therefore, if the second moving body 32 is moved towards the proximal side in the extending direction A, the flange portion 32b presses the flange portion 58 of the valve core 50 towards the proximal side. Thus, by moving the second moving body 32 towards the proximal side in the extending direction A, the valve core 50 can be compressed and deformed towards the proximal side in the extending direction A. Conversely, when the valve core 50, in a state of compression and deformation towards the proximal side in the extending direction A, elongates towards the distal side in the extending direction A due to the restoring force, the flange portion 58 of the valve core 50 presses the flange portion 32b of the second moving body 32 towards the distal side. Thus, the second moving body 32 can be restored to its original position. This will be described in detail later.

[0062] The inner cylinder portion 32c protrudes from the inner edge of the flange portion 32b toward the distal side in the extending direction A. The inner cylinder portion 32c is arranged in a concentric circle inside the outer cylinder portion 32a in the radial direction B.

[0063] An annular protrusion 32c1 protruding radially inward is provided on the inner surface of the inner cylinder portion 32c. The annular protrusion 32c1 and the annular groove 57a on the outer surface of the front end portion 57 of the valve core 50 (see reference) Figure 8 ) Fitting. As a result, the front end portion 57 housed in the inner cylinder portion 32c is not easily dislodged from the inner cylinder portion 32c to the proximal side in the extending direction A.

[0064] Materials constituting the shell body 20, the first movable body 31, and the second movable body 32 of the first shell 10 include, for example: polyolefins such as polyethylene, polypropylene, and ethylene-propylene copolymer; ethylene-vinyl acetate copolymer (EVA); polyvinyl chloride; polyvinylidene chloride; polystyrene; polyamide; polyimide; polyamide-imide; polycarbonate; poly-(4-methylpentene-1); ionomer; acrylic resin; polymethyl methacrylate; acrylonitrile-butadiene-styrene copolymer (ABS resin); acrylonitrile-styrene Copolymers (AS resins); butadiene-styrene copolymers; polyesters such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT), and polycyclohexanedimethyl terephthalate (PCT); polyethers; polyetherketone (PEK); polyetheretherketone (PEEK); polyetherimide; polyacetal (POM); polyphenylene ether; modified polyphenylene ether; polysulfone; polyethersulfone; polyphenylene sulfide; polyarylates; aromatic polyesters (liquid crystal polymers); polytetrafluoroethylene, polyvinylidene fluoride, and other fluorinated resins; and various other resin materials. In addition, mixtures or polymer alloys containing one or more of these materials are also acceptable. Furthermore, various glass materials, ceramic materials, and metal materials are also possible.

[0065] [Flow path component 40]

[0066] The flow path member 40 internally divides into a first flow path 41. The first flow path 41 communicates with the outside through an opening 42. The flow path member 40 is connected to the proximal end of the housing body 20, which constitutes the proximal end of the first housing 10. Thus, the proximal side of the hollow portion 29 of the housing body 20 is sealed by the flow path member 40. The flow path member 40 has a medical device connection portion 43 at its proximal end, which can be connected to a medical device such as a medical tube. Furthermore, the flow path member 40 has a flow path body 46 extending within the hollow portion 11 of the first housing 10 and having an opening 42 formed at its distal end. The first flow path 41 communicates from the proximal end of the medical device connection portion 43 to the distal end of the flow path body 46. In addition, the flow path member 40 has a distally tapered front end portion 44 at its distal end, which faces the extension direction A. In this embodiment, the front end portion 44 is a shape composed of two tapered portions with different diameter reduction ratios, but it can also be other shapes that taper at the front end, such as a conical shape. The distal end of the front end portion 44 can also be non-sharp and formed in a planar shape along the radial direction B.

[0067] Furthermore, the flow path member 40 has an annular flange portion 45 that protrudes radially outward from the medical device connection portion 43. The proximal end of the bellows portion 56 of the valve core 50, described later, is supported by the distal side of the flange portion 45.

[0068] The flow path component 40 can be formed of the same material as the first housing 10 described above.

[0069] [Valve Core 50]

[0070] The valve core 50 covers the flow path body 46 within the first housing 10. Specifically, the valve core 50 of this embodiment includes: a bellows portion 56 that is elastically deformable along the extension direction A; a front end portion 57 that is continuous with the bellows portion 56 in such a way as to close the distal side of the hollow portion of the bellows portion 56 and is housed within the inner cylinder portion 32c of the second moving body 32; and a flange portion 58 that protrudes outward from the bellows portion 56 in a radial direction B.

[0071] The proximal end of the corrugated section 56 is supported by the flow path member 40. More specifically, with the flow path body 46 of the flow path member 40 covered by the corrugated section 56 and the front end 57, the proximal end of the corrugated section 56 is supported by abutting against the distal side of the flange portion 45 of the flow path member 40.

[0072] The front end portion 57 is held within the inner cylinder portion 32c of the second movable body 32 of the movable body 30. For example... Figure 8 As shown, an annular groove 57a is formed on the outer surface of the front end portion 57 in this embodiment. As described above, an annular protrusion 32c1 (see reference 32c1) is provided on the inner surface of the inner cylinder portion 32c. Figure 4The annular groove 57a on the outer surface of the front end portion 57 is fitted into the inner cylinder portion 32c. Therefore, the front end portion 57 is less likely to detach from the inner cylinder portion 32c towards the proximal side in the extending direction A. Furthermore, the front end portion 57 is configured to abut against the flange portion 32b of the second movable body 32 via the flange portion 58, thereby preventing it from detaching from the inner cylinder portion 32c towards the distal side in the extending direction A. Thus, the front end portion 57 remains housed within the inner cylinder portion 32c of the second movable body 32.

[0073] Furthermore, a slit 51 extending from the proximal side to the distal side is formed at the front end portion 57. Additionally, a conical protrusion 52a protruding distally is formed at the center of the distal end face, i.e., the top surface 52, of the front end portion 57. By providing the protrusion 52a at the center of the top surface 52, it is easy to tightly adhere to the top surface 72 of the resilient valve core 70 of the concave connector 2, which will be described later. Therefore, when disconnecting the convex connector 1 and the concave connector 2, liquids such as medicine are less likely to adhere to the top surface 52 of the valve core 50 and the top surface 72 of the resilient valve core 70. This will be described in detail later.

[0074] Figures 1-5 The convex connector 1 shown before connection is in its first configuration, where the opening 42 of the flow path component 40 is closed by the valve core 50. (As shown...) Figure 4 As shown, in this embodiment, the distal end of the flow path component 40a, including the opening 42, is covered by the valve core 50, and the opening 42 is closed.

[0075] The hardness of the valve core 50 is preferably 10 or higher and 70 or lower on the Shore A scale, more preferably 20 or higher and 50 or lower. If the hardness is lower than 10 on the Shore A scale, fluids such as medicine may leak to the outside when the pressure in the first flow path 41 increases. If the hardness is higher than 70 on the Shore A scale, the contact between the valve core 50 and the elastic valve core 70 of the concave connector 2 becomes insufficient, and fluids such as medicine may leak to the outside when the connection with the concave connector 2 is released. Furthermore, if the hardness of the valve core 50 is 20 or higher and 50 on the Shore A scale, proper tightness with the concave connector 2 can be ensured, and leakage of fluids such as medicine to the outside can be more reliably suppressed when the connection with the concave connector 2 is released.

[0076] The valve core 50 is molded and formed to be elastically deformable. Examples of materials for the valve core 50 include: various rubber materials such as natural rubber, isoprene rubber, butadiene rubber, styrene-butadiene rubber, nitrile rubber, chloroprene rubber, butyl rubber, acrylic rubber, ethylene propylene rubber, chloroprene rubber, polyurethane rubber, silicone rubber, and fluororubber; various thermoplastic elastomers such as styrene-based, polyolefin-based, polyvinyl chloride-based, polyurethane-based, polyester-based, polyamide-based, polybutadiene-based, trans-polyisoprene-based, fluororubber-based, and chlorinated polyethylene-based; and structures obtained by mixing one or more of these materials. The valve core 50 can be formed from different materials or from the same material.

[0077] <Concave Connector 2>

[0078] [Second shell 60]

[0079] like Figure 4 , Figure 5 As shown, the second housing 60 includes: a cap 62 that defines a connector insertion portion 61 for the connector 1 to be inserted from the outside; and a retainer 63 that supports the cap 62 and defines a second flow path 66. The connector insertion portion 61 is a hollow portion defined by the cap 62 and the retainer 63. The second flow path 66 is a hollow portion defined by the retainer 63. The connector insertion portion 61 is positioned closer to the position side than the second flow path 66. The hollow portion defined by the second housing 60 is formed by the connector insertion portion 61 and the second flow path 66.

[0080] An annular groove 65, serving as a locking portion, is formed on the outer peripheral wall of the cap 62, allowing the locking claw 31b2 of the locking claw portion 31b of the first movable body 31 to engage. Furthermore, the locking claw 22b1 of the locking claw portion 22 of the housing body 20 can also engage in the annular groove 65. Details regarding the engagement of the locking claws 31b2 and 22b1 into the annular groove 65 will be described later (see [reference]). Figures 9-14 Furthermore, the cap 62 is formed by two components that clamp and fix the resilient valve core 70 from both sides of the extending direction A.

[0081] The second housing 60 can be formed of the same material as the first housing 10 of the aforementioned convex connector 1.

[0082] [Elastic Valve Core 70]

[0083] A slit 71 is formed in the resilient valve core 70, extending from the proximal side to the distal side. For example... Figure 4 , Figure 5As shown, the top surface 72 of the resilient valve core 70 is exposed to the outside. The resilient valve core 70 can be formed of the same material as the valve core 50 of the aforementioned convex connector 1. The hardness of the resilient valve core 70 is preferably 20 or higher and 60 or lower on the Shore A scale. Furthermore, the hardness of the resilient valve core 70 is preferably greater than that of the valve core 50 of the convex connector 1. By making the hardness of the resilient valve core 70 greater than that of the valve core 50, leakage of fluids such as medication to the outside is suppressed when the pressure in the second flow path 66 increases, and the deformation of the resilient valve core 70 when the convex connector 1 and the concave connector 2 are easily suppressed. If the deformation of the resilient valve core 70 is large, a negative pressure will be generated in the second flow path 66 when the convex connector 1 is pulled out from the concave connector 2, which may draw blood from the patient's blood vessel connected to the second flow path 66.

[0084] <Connection operation of male connector 1 and female connector 2>

[0085] The following is for reference Figure 4 , Figure 5 , Figures 9-15 The connection operation of the male connector 1 and the female connector 2 will be explained. As described above, Figure 4 , Figure 5 This is a cross-sectional view showing the state of the male connector 1 and the female connector 2 before connection. Figure 9 , Figure 11 , Figure 13 Is with Figure 4 Cross-sections at the same location Figure 9 This indicates the connection is in progress. Figure 11 The first connection state is shown. Figure 13 This shows the second connection state. Similarly, Figure 10 , Figure 12 , Figure 14 Is with Figure 5 Cross-sections at the same location Figure 10 This indicates the connection is in progress. Figure 12 The first connection state is shown. Figure 14 The second connection state is shown. Figure 15 It means from Figure 9 , Figure 10 The connection midway status shown Figure 11 , Figure 12 This diagram illustrates the movement of the second moving body 32 up to the first connection state. Details regarding the first and second connection states will be described later.

[0086] The male connector 1 and the female connector 2 are from Figure 4 , Figure 5 The pre-connection states shown move in a manner that brings them closer together in the extension direction A, thereby enabling connection. Figure 9 , Figure 10 Showing from Figure 4 , Figure 5 The pre-connection state shown is such that the male connector 1 and the female connector 2 are close together in the extending direction A, and the top surface 52 of the valve core 50 of the male connector 1 abuts against the top surface 72 of the elastic valve core 70 of the female connector 2. Thus, in the case of the male connector 1 and the female connector 2 being connected in this embodiment, the top surface 52 of the valve core 50 of the male connector 1 and the top surface 72 of the elastic valve core 70 of the female connector 2 contact first. If the male connector 1 and the female connector 2 are brought closer together in the extending direction A, the top surface 62a of the cap 62 of the female connector 2 abuts against the distal end 32c2 of the inner cylinder portion 32c of the second moving body 32 of the male connector 1. Figure 9 , Figure 10 The diagram shows the top surface 52 of the valve core 50 of the convex connector 1 abutting against the top surface 72 of the elastic valve core 70 of the concave connector 2, and the distal end 32c2 of the second moving body 32 of the convex connector 1 abutting against the top surface 62a of the cap 62 of the concave connector 2.

[0087] If from Figure 9 , Figure 10 The state shown brings the convex connector 1 and the concave connector 2 closer together in the extending direction A. The top surface 62a of the cap 62 of the concave connector 2 presses the distal end 32c2 of the inner cylinder portion 32c of the second moving body 32 of the convex connector 1 towards the proximal side in the extending direction A. As a result, the second moving body 32... Figure 15 The state shown in (a) is towards Figure 15 The state shown in (b) moves towards the proximal side in the extension direction A. For example... Figure 15 of (a), Figure 15 As shown in (b), at this time, the second moving body 32 moves relative to the first moving body 31 and the housing body 20. Meanwhile, the first moving body 31 remains locked in a position where it does not move relative to the housing body 20 in the extending direction A. More specifically, as... Figure 15 of (a), Figure 15 As shown in (b), the engaging surface 33 of the locking claw portion 31b of the first moving body 31 remains in contact with the recess 21c of the end face of the cylindrical portion 21 of the housing body 20. Therefore, the first moving body 31 remains in a locked state, unable to move relative to the housing body 20 in the proximal direction A.

[0088] like Figure 15 of (a), Figure 15 As shown in (b), in this embodiment, the second movable body 32 can move relative to the first movable body 31 in the extending direction A from the position where the protrusion 32a1 abuts against the distal wall of the elongated hole 31a1 to the position where the protrusion 32a1 abuts against the proximal wall of the elongated hole 31a1. The second movable body 32 moves from... Figure 15 The state shown in (a) is moved to Figure 15 In the state shown in (b), the valve core 50 also undergoes compression deformation in the extending direction A. Specifically, the flange portion 32b of the second moving body 32 (refer to...) Figure 4 (etc.) the flange portion 58 of the valve core 50 (refer to) Figure 4 (etc.) is pressed towards the proximal side in the extension direction A. As a result, the bellows portion 56 of the valve core 50 is elastically deformed and compressed in the extension direction A.

[0089] If the second moving body 32 from Figure 15 If the state shown in (b) is further pressed towards the proximal side in the extending direction A, the protrusion 32a1 of the second moving body 32 presses against the proximal wall of the elongated hole 31a1 towards the proximal side. As a result, the engaging surface 33 of the locking claw portion 31b of the first moving body 31 moves radially inward towards the inner side of B in a manner that slides against the recess 21c, which is part of the end face of the cylindrical portion 21 of the housing body 20 (see reference). Figure 11 Therefore, the locking claw portion 31b of the first moving body 31 is inserted entirely into the cylindrical portion 21 of the housing body 20. In other words, the first moving body 31 is released from its locked state in a manner that prevents it from moving proximal to the extending direction A relative to the housing body 20. As a result, the first moving body 31 becomes capable of moving proximal to the extending direction A relative to the housing body 20.

[0090] Figure 11 The locking claw portion 31b of the first moving body 31 is shown as being entirely from... Figure 15 The state shown in (b) indicates that the body has entered the cylindrical portion 21 of the housing body 20. Figure 11 As shown, the locking claw portion 31b of the first moving body 31 moves inward in the radial direction B, thereby engaging the locking claw 31b2 into the annular groove 65 of the cap 62 of the concave connector 2. Thus, the first moving body 31 can lock the concave connector 2 in place, preventing it from moving distally in the extending direction A. Therefore, it is possible to stably maintain the state in which the valve core 50 of the convex connector 1 and the elastic valve core 70 of the concave connector 2 form an abutment region. In this embodiment, the state in which the locking claw 31b2 engages the annular groove 65 of the cap 62 of the concave connector 2 is referred to as the "first connection state".

[0091] If from Figure 11 , Figure 12 As shown, the convex connector 1 and the concave connector 2 are brought closer together in the extending direction A. While the first moving body 31 is holding the concave connector 2 in place, the first moving body 31 and the second moving body 32 move further relative to the housing body 20 towards the proximal side in the extending direction A. As a result, the bellows portion 56 of the valve core 50 undergoes further compression deformation in the extending direction A. As a result, such as Figure 13 , Figure 14As shown, the front end of the flow path body 46 of the flow path component 40 passes through the abutment area of ​​the valve core 50 and the resilient valve core 70. Thus, the convex connector 1 closes the opening 42 of the flow path component 40 from the valve core 50 in the first configuration (see reference). Figure 4 , Figure 9 , Figure 11 The shape changes to the second form where the valve core 50 opens the opening 42 of the flow path component 40 (refer to...). Figure 13 Furthermore, the first flow path 41 of the convex connector 1 and the second flow path 66 of the concave connector 2 are in a state of liquid-tight communication.

[0092] Furthermore, if the first moving body 31 and the second moving body 32 move further relative to the housing body 20 in the extending direction A, then as Figure 14 As shown, the locking claw 22b1 of the locking claw portion 22 of the housing body 20 passes over a portion of the outer peripheral surface of the cap 62 of the concave connector 2. As a result, the locking claw 22b1 enters the annular groove 65 of the concave connector 2. More specifically, the locking claw 22b1 is pressed radially outward by sliding its inclined surface 25a against the outer edge of the top surface 62a of the cap 62 of the concave connector 2. As a result, the claw body portion 22b moves in a manner that swings radially outward by B. As a result, the locking claw 22b1 moves radially outward by B and can pass over a portion of the outer peripheral surface of the cap 62. In other words, during the connection operation of the convex connector 1 and the concave connector 2, it is not necessary to operate the operating portion 22c of the locking claw portion 22. In the convex connector 1 and the concave connector 2 of this embodiment, the locking claw 22b1 can enter the annular groove 65 of the concave connector 2 simply by moving both in a direction that approaches each other in the extending direction A. Therefore, it is possible to maintain the locking claw 31b2 in the state where it enters the annular groove 65 (refer to...). Figure 13 ),like Figure 14 As shown, the locking claw 22b1 also enters the annular groove 65. In this embodiment, the state in which the locking claw 31b2 enters the annular groove 65 of the cap 62 of the concave connector 2 and the locking claw 22b1 enters the annular groove 65 of the cap 62 of the concave connector 2 is called the "second connection state".

[0093] The connection between the convex connector 1 and the concave connector 2 ends by achieving the second connection state described above.

[0094] <Disassembly of the male connector 1 and female connector 2>

[0095] Next, regarding the lifting of the state Figure 13 , Figure 14The disassembly process of the convex connector 1 and concave connector 2 in the second connection state will be explained. During disassembly, the operating portion 22c of the locking claw portion 22 of the convex connector 1 is pressed inwards radially B, causing it to move. This allows the claw body portion 22b, located on the opposite side of the operating portion 22c and separated from the support portion 22a, to move outwards radially B, using the support portion 22a as a fulcrum. Consequently, the locking claw 22b1, which enters the annular groove 65 of the cap 62 of the concave connector 2, also moves outwards radially B, disengaging from the annular groove 65. In other words, the second connection state is released.

[0096] If the locking claw 22b1 disengages from the annular groove 65, the second moving body 32 is pressed distally in the extending direction A by the elastic force of the restoring force of the bellows portion 56 of the compressed and deformed valve core 50. More specifically, the flange portion 58 of the valve core 50 presses the flange portion 32b of the second moving body 32 distally. As a result, the second moving body 32 moves distally in the extending direction A.

[0097] At this moment, the locking claw 31b2 of the first moving body 31 remains in the state of entering the annular groove 65 of the cap 62 of the concave connector 2. Therefore, if the second moving body 32 moves to the distal side in the extension direction A, the first moving body 31 and the concave connector 2 also move to the distal side in the extension direction A.

[0098] In this way, the first moving body 31, the second moving body 32, and the recessed connector 2 become one unit and move toward the distal side in the extending direction A, thereby causing the flow path body 46 of the flow path member 40 to be pulled out from the valve core 50 and the resilient valve core 70. In other words, the flow path body 46 of the flow path member 40 can be pulled out from the valve core 50 and the resilient valve core 70 while maintaining the first connection state in which the locking claw 31b2 of the first moving body 31 is engaged in the annular groove 65 of the cap 62 of the recessed connector 2. As a result, with the abutment area of ​​the valve core 50 and the resilient valve core 70 stably formed, the flow path body 46 of the flow path member 40 can be pulled out from the valve core 50 and the resilient valve core 70 through this abutment area. As a result, it is possible to suppress the adhesion of liquids such as medicine to the top surface 52 of the valve core 50 and the top surface 72 of the elastic valve core 70 after they are pulled out. In other words, it is possible to suppress the formation of "droplet residue" on the top surface 52 of the valve core 50 and the top surface 72 of the elastic valve core 70.

[0099] Furthermore, after the flow path body 46 of the flow path component 40 is pulled out from the valve core 50 and the elastic valve core 70, the engaging surface 33 of the locking claw portion 31b of the first moving body 31 reaches a position in the extending direction A of the recess 21c, which is part of the end face of the cylindrical portion 21 of the housing body 20. At this time, by the elastic force of the restoring force of the arm portion 31b1, the locking claw portion 31b moves outward in the radial direction B, and the locking claw 31b2 disengages from the annular groove 65. In other words, the first connection state is released. As a result, the convex connector 1 and the concave connector 2 are in a state where they can be separated in the extending direction A.

[0100] The first moving body 31 and the second moving body 32 return to their original positions via the restoring force of the valve core 50. Figure 4 , Figure 5 The state shown. That is, the first moving body 31 returns to the protrusion 31a2 (see reference). Figure 7 (etc.) and the wall portion 21b1 of the elongated groove portion 21b of the housing body 20 (refer to) Figure 6 Until the point of contact (etc.). Furthermore, the second moving body 32 returns to the protrusion 32a1 (see reference). Figure 8 , Figure 15 (etc.) and the elongated hole 31a1 of the first moving body 31 (refer to) Figure 7 , Figure 15 Until the distal wall of the first moving body 31 abuts. In other words, the second moving body 32 returns to the state where it protrudes distally from the first moving body 31 in the extending direction A.

[0101] As described above, the convex connector 1 can be in the first configuration where the valve core 50 closes the opening 42 of the flow path member 40 (see reference). Figure 4 , Figure 5 , Figures 9-12 The second configuration (refer to) involves the valve core 50 opening the opening 42 of the flow path component 40. Figure 13 , Figure 14 The flow path tube component 40 can be configured in two ways. In this embodiment, the entire flow path tube body 46 of the flow path tube component 40 is covered by the valve core 50, thus achieving the first form. Furthermore, in this embodiment, the front end of the flow path tube body 46 of the flow path tube component 40 penetrates the valve core 50, and the opening 42 at the front end is exposed outside the valve core 50, thus achieving the second form. The structures for achieving the first and second forms are not limited to the structure of this embodiment. Therefore, as long as the structures can achieve the first and second forms, the structures of the flow path tube component 40 and the valve core 50 are not limited to the structure of this embodiment.

[0102] Furthermore, the moving body 30 of the male connector 1 has a locking claw 31b2 as a first locking portion, which, in the first configuration, can lock the female connector 2 when the valve core 50 abuts against the elastic valve core 70 of the female connector 2. Figure 11 As shown, the locking claw 31b2 of the first locking portion of the first moving body 31 of the moving body 30 can engage with the annular groove 65 of the concave connector 2 in the first mode when the valve core 50 and the elastic valve core 70 abut to form an abutment area.

[0103] Furthermore, the housing body 20 of the convex connector 1 has a locking claw 22b1 as a second locking portion. In the second configuration, when the locking claw 31b2, which is the first locking portion, locks the recessed connector 2, it can lock the recessed connector 2 at a position different from the locking position of the locking claw 31b2, which is the first locking portion. For example... Figure 14 As shown, in the second configuration, the locking claw 22b1 of the second locking portion of the housing body 20 can engage with other positions of the annular groove 65 while maintaining the locking claw 31b2 of the first locking portion engaged in the annular groove 65 of the recessed connector 2.

[0104] The first locking portion of this embodiment is composed of a locking claw 31b2, but it is configured to restrict the movement of the concave connector 2 to the distal side of the extending direction A in a manner that prevents the concave connector 2 from separating towards the distal side of the extending direction A; its structure is not particularly limited. Furthermore, the second locking portion of this embodiment is composed of a locking claw 22b1, but it is configured to restrict the movement of the concave connector 2 to the distal side of the extending direction A in a manner that prevents the concave connector 2 from separating towards the distal side of the extending direction A; its structure is not particularly limited.

[0105] The male connector 1 can change its shape between a first form and a second form, thereby suppressing leakage of fluids such as medicine to the outside when the connection with the female connector 2 is released. Furthermore, the male connector 1 has the aforementioned first locking portion and second locking portion, thereby improving the connection stability with the female connector 2.

[0106] Furthermore, in this embodiment, two locking claws 31b2 of the first moving body 31, which is the first locking portion of the moving body 30, are provided at intervals in the circumferential direction C. More specifically, in this embodiment, the two locking claws 31b2 are arranged facing each other in the radial direction B. Thus, the locking claws 31b2 of the first locking portion are preferably not endless structures such as cylindrical shapes. In this way, locking claws 31b2 that can easily move in the radial direction B can be achieved. The number and position of the first locking portion are not limited to those in this embodiment. The first locking portion may be provided only once in a part of the circumferential direction C, or it may be provided at intervals in the circumferential direction C, with three or more.

[0107] Furthermore, in this embodiment, the locking claw 31b2, which is the first locking portion of the moving body 30, can move radially B as the moving body 30 moves relative to the housing body 20 in the extending direction A. More specifically, the locking claw 31b2 of the first moving body 31, which is the first locking portion of the moving body 30 in this embodiment, can move radially B as the first moving body 31 moves relative to the housing body 20 in the extending direction A. Figure 4 As shown, in this embodiment, the first movable body 31 abuts against and hooks onto a portion of the end face of the cylindrical portion 21 of the housing body 20, i.e., the recess 21c, via the engaging surface 33, thereby locking it against the housing body 20 and restricting its movement toward the proximal side in the extending direction A. If the first movable body 31 is pressed toward the proximal side in the extending direction A from this state, the arm portion 31b1 of the locking claw portion 31b of the first movable body 31 elastically deforms toward the radially inward side B, and the engaging surface 33 moves to the radially inward side of the recess 21c. Thus, as Figure 11 As shown, the locking of the first moving body 31 relative to the housing body 20 is released. Furthermore, the locking claw 31b2, which is the first locking part, moves radially inward (B). In other words, the locking claw 31b2, as the first locking part, can move radially inward (B) in conjunction with the movement of the first moving body 31 towards the proximal side in the extending direction A (see reference). Figure 11 Conversely, when the connection with the concave connector 2 is released, the locking claw 31b2, as the first locking part, moves in conjunction with the movement of the first moving body 31 in the distal direction A, and moves radially outward by the restoring force of the arm 31b1. As a result, the locking claw 31b2, as the first locking part, moves towards... Figure 4 Restore the positions shown in the figure.

[0108] Wherein, the first locking part is not limited to the structure of the locking claw 31b2 of this embodiment, as long as it is a structure that moves in the radial direction B in conjunction with the movement of the moving body 30 in the extension direction A.

[0109] The movable body 30 of the convex connector 1 has a first locking part that moves radially in conjunction with the movement of the movable body 30 in the extension direction A, thereby enabling the first locking part to lock the concave connector 2 during the connection operation of the convex connector 1 and the concave connector 2, which is carried out only by the approach movement in the extension direction A.

[0110] Furthermore, in this embodiment, two locking claws 22b1, which constitute the second locking portion of the housing body 20, are provided at intervals in the circumferential direction C. More specifically, in this embodiment, the two locking claws 22b1 are arranged facing each other in the radial direction B. Thus, it is preferable that two locking claws 22b1, which constitute the second locking portion, are arranged in facing positions. In this way, the recessed connector 2 can be stably locked. In particular, in this embodiment, the locking claws 22b1 release the locking state with the recessed connector 2 by pressing the operating part 22c inward in the radial direction B. Therefore, when the connection with the recessed connector 2 is released, the medical worker can easily release the locking state of the locking claws 22b1 with the recessed connector 2 by operating the two operating parts 22c arranged in facing positions in a clamping manner.

[0111] The number and position of the second locking part are not limited to those in this embodiment. The second locking part may be provided only once in a part of the circumferential C, or three or more may be provided at intervals on the circumferential C.

[0112] Furthermore, in this embodiment, if the locking claw 22b1, which is the second locking part of the housing body 20, is released from locking the recessed connector 2, the moving body 30 moves relative to the housing body 20 in the extending direction A by the restoring force of the deformed valve core 50. As a result, the convex connector 1 changes from a second form with the opening 42 open to a first form with the opening 42 closed. In other words, the convex connector 1 according to this embodiment can change its form from a second form to a first form in conjunction with the operation of releasing the locking claw 22b1, which is the second locking part, from locking the recessed connector 2. Therefore, when the connection with the recessed connector 2 is released, the valve core 50 can more reliably close the opening 42 of the flow path member 40.

[0113] In this embodiment, as described above, the movable body 30 can be restored to its original position by the restoring force of the bellows portion 56 of the valve core 50, which has been compressed and deformed in the extending direction A, but this structure is not limited to this. The convex connector 1 may also be configured to have a force-applying member that applies force to the valve core 50 or the movable body 30 in the distal direction A. In other words, the convex connector 1 can also restore the movable body 30 to its original position through the force of the force-applying member.

[0114] Furthermore, in this embodiment, after the form changes from the second form with the opening 42 open to the first form with the opening 42 closed, the moving body 30 continues to move distally relative to the housing body 20 in the extending direction A due to the restoring force of the valve core 50. This releases the state in which the locking claw 31b2, as the first locking part, locks the recessed connector 2. More specifically, when the connection with the recessed connector 2 is released, the locking claw 31b2, as the first locking part in this embodiment, moves distally in the extending direction A in conjunction with the moving body 30, and moves radially outward (see reference 31b1) due to the restoring force of the arm 31b1. Figure 9 , Figure 11 Therefore, the locking claw 31b2, which is the first locking part, disengages from the annular groove 65 of the concave connector 2, releasing the state in which the locking claw 31b2 locks the concave connector 2. In other words, according to the convex connector 1 of this embodiment, the locking state of the locking claw 31b2, which is the first locking part, to the concave connector 2 can be released by the restoring force of the valve core 50, and as a result, the concave connector 2 can be completely separated from the convex connector 1. In other words, in the convex connector 1 of this embodiment, the morphological change from the second form to the first form and the release of the locking state of the locking claw 22b1, which is the second locking part, to the concave connector 2 can be realized simply by releasing the locking state of the locking claw 22b1, which is the second locking part, to the concave connector 2. That is, according to the convex connector 1 of this embodiment, when medical workers disconnect from the concave connector 2, they can easily disconnect from the concave connector 2 simply by operating the clamping operation part 22c. As described above, when the convex connector 1 of this embodiment is connected to the concave connector 2, it can be easily connected to the concave connector 2 simply by approaching the concave connector 2 in the extending direction A.

[0115] Furthermore, the movable body 30 of this embodiment, as described above, includes a first movable body 31 and a second movable body 32 capable of relative movement in the extending direction A. Moreover, as... Figure 15 of (a), Figure 15 As shown in (b), the second movable body 32, when the first movable body 31 is locked in a manner in which it does not move relative to the housing body 20 in the extending direction A, is capable of moving relative to both the first movable body 31 and the housing body 20 in the extending direction A. More specifically, when the first movable body 31 is locked in a manner in which it does not move relative to the housing body 20 in the extending direction A, the second movable body 32 is capable of moving in the protruding position (refer to...) Figure 15 (a) and retreat position (refer to) Figure 15 (b) The second moving body 32 moves relative to the first moving body 31 in the extending direction A. "Protruding position" refers to the position where the second moving body 32, together with the valve core 50, protrudes distally from the first moving body 31 in the extending direction A (refer to...). Figure 15(a)). Furthermore, the "retracted position" refers to the position where the second moving body 32, together with the valve core 50, retracts from the protruding position towards the proximal side in the extending direction A (see reference). Figure 15 (b)

[0116] Thus, the movable body 30 includes a first movable body 31 and a second movable body 32 capable of relative movement in the extending direction A, thereby enabling movement between the protruding position and the retracted position of the second movable body 32. By positioning the second movable body 32 in the protruding position, the top surface 52 of the valve core 50 held by the second movable body 32 can be positioned in a location easily cleaned from the outside of the convex connector 1. In this embodiment, the top surface 52 of the valve core 50 constitutes the distal end of the convex connector 1 as a whole.

[0117] <Medical device equipped with convex connector 1>

[0118] Finally, refer to Figure 16 The infusion tubing assembly 100, which is a medical device equipped with the aforementioned convex connector 1, will be described. Figure 16 This diagram illustrates the connection between an infusion tubing assembly 100 equipped with a male connector 1 and another infusion tubing assembly 110 equipped with the aforementioned female connector 2. The infusion tubing assembly 100 and the other infusion tubing assemblies 110 are used for administering intravenous fluids such as medications to living organisms. Figure 16 As shown, the infusion tubing assembly 100 includes: a connector 102 connected to a medication container 200; a convex connector 1 located downstream of the connector 102, i.e., distally; and a medical tube 103 connecting the connector 102 and the convex connector 1. Furthermore, a clamp 104 for blocking this portion may be fitted midway through the medical tube 103. This clamp 104 is configured to press and close the medical tube 103 from the outside.

[0119] In this infusion tubing assembly 100 with the clamp 104 open, liquids such as medication in the medication container 200 flow from the connector 102 through the medical tubing 103 into the male connector 1. Furthermore, when the male connector 1 is connected, for example, via a female connector 2 to another infusion tubing assembly 110 that has the aforementioned female connector 2 as a mixing port, the liquid flowing into the male connector 1 passes through both the male connector 1 and the female connector 2, flowing into the other infusion tubing assembly 110 and being supplied to the organism.

[0120] The connector 102 includes: a first connecting portion 105 located at the proximal end and connected to the liquid container 200; a second connecting portion 106 located at the distal end and connected to the medical tubing 103; and a third connecting portion 107 protruding laterally from the outer wall for connection to a syringe. Within the connector 102, a main flow path is defined, connecting the first connecting portion 105 to the second connecting portion 106 and enabling the delivery of liquid from the liquid container 200 to the medical tubing 103; and a sub-flow path is defined, connecting the first connecting portion 105 and the third connecting portion 107 and enabling the delivery of liquid between the liquid container 200 and the syringe connected to the third connecting portion 107.

[0121] Therefore, by connecting a syringe containing, for example, an anticancer drug solution to the third connection portion 107 of the connector 102, the drug solution in the syringe can be delivered to the drug solution container 200 via the sub-flow path of the connector 102. Furthermore, the anticancer drug solution contained in the drug solution container 200 is supplied to the convex connector 1 through the main flow path of the connector 102 and the medical tubing 103.

[0122] As described above, by connecting the concave connector 2 to the distal side of the convex connector 1 and supplying the anticancer drug solution to other infusion tubing assemblies 110, the anticancer drug solution can be administered to the organism. Furthermore, when the drug administration is completed and the connection between the convex connector 1 and the concave connector 2 is released, the valve core 50 of the convex connector 1 closes, thus preventing leakage of the anticancer drug solution from the distal end of the convex connector 1.

[0123] An infusion tubing assembly 100 is illustrated as a medical device equipped with a male connector 1, but the male connector 1 is not limited to infusion tubing assemblies and can also be used in other medical devices. For example, it can also be used in a syringe with the male connector 1 at the front end of the syringe body. In such a case, for example, the third connecting portion 107 of the aforementioned connector 102 can be made to have the same structure as the female connector 2, and the syringe equipped with the male connector 1 can be connected to the third connecting portion 107.

[0124] The convex connector and medical device equipped with the convex connector disclosed herein are not limited to the structure of the embodiments described above, and can be implemented with various structures without departing from the scope of the claims. The valve core 50 of the above embodiments is a structure capable of compressing and deforming in the extension direction A via the bellows portion 56, but is not limited to this structure. For example, the valve core 50 may also be a structure capable of moving together with the moving body 30 in the extension direction A. Furthermore, the slit 51 of the valve core 50 and the slit 71 of the elastic valve core 70 may not be pre-set, and may be configured to be pierced and connected by the flow path member 40.

[0125] Furthermore, in the above-described embodiment, the locking claw 31b2, which serves as the first locking portion of the convex connector 1, and the locking claw 22b1, which serves as the second locking portion, are fitted into the same annular groove 65, which serves as the locking portion of the concave connector 2, to lock the concave connector 2. However, this structure is not limited to this. In other words, the locking portion for which the first locking portion of the convex connector 1 engages and the locking portion for which the second locking portion of the convex connector 1 engages can be different parts of the concave connector 2. Moreover, the structure of the locking portion is not limited to the annular groove 65 of this embodiment and can be appropriately modified depending on the structure of the first locking portion and the second locking portion.

[0126] Furthermore, in the above embodiments, a so-called "I-type connector" having a straight second flow path 66 was exemplified as the concave connector 2 capable of connecting to the convex connector 1, but the embodiment is not limited to this structure. The concave connector 2 capable of connecting to the convex connector 1 could also be, for example, a T-shaped concave connector having an upstream port, a downstream port, and a mixed injection port capable of connecting to the convex connector 1. Moreover, the convex connector 1 in the above embodiments is configured to not only be able to connect to... Figure 1 The straight concave connector 2 shown can be connected to, and can also be used with Figure 17 The T-shaped concave connector 82 is connected. The mixing inlet 83 of the T-shaped concave connector 82 has the same structure as the part of the concave connector 2 shown in the above embodiment that can be connected to the convex connector 1. The upstream port 84 and the downstream port 85 of the T-shaped concave connector 82 are configured to be in the state before connection (refer to the four recesses 21c formed on the end face of the cylindrical portion 21 of the housing body 20) when the convex connector 1 is connected to the mixing inlet 83. Figure 4 The lower part does not engage with the locking claw 31b (refer to...) Figure 1 The remaining two recesses 21c, etc., extend outwards from their positions. In the convex connector 1 of the above embodiment, in the pre-connection state (refer to...), Figure 4 ) lower and locking claw part 31b (refer to) Figure 1 The two recesses 21c that engage are positioned facing each other in the radial direction B. Furthermore, in the convex connector 1 of the above embodiment, the two recesses 21c that receive the upstream port 84 and downstream port 85 of the concave connector 82 are also positioned facing each other in the radial direction B.

[0127] Industrial availability

[0128] This disclosure relates to convex connectors and medical devices.

[0129] Explanation of reference numerals in the attached figures

[0130] 1...convex connector; 2...concave connector; 10...first housing; 11...hollow portion; 20...housing body; 21...cylindrical portion; 21a...opening; 21b...long slot portion; 21b1...wall portion; 21c...recess; 22...locking claw portion; 22a...support portion; 22b...claw body portion; 22b1...locking claw (example of the second locking portion); 22c...operating portion; 25a...inclined surface; 25b...hooking surface; 29...hollow portion; 30...moving body; 31...first moving part Moving body; 31a...main body; 31a1...elongated hole; 31a2...protrusion; 31b...locking claw; 31b1...arm; 31b2...locking claw (example of the first locking part); 32...second moving body; 32a...outer cylinder; 32a1...protrusion; 32b...flange; 32c...inner cylinder; 32c1...annular protrusion; 32c2...distal end; 33...engaging surface; 39...hollow part; 40...flow path component; 41...first flow path; 42...opening; 43... 44... Medical device connection part; 45... Front end part; 46... Flange part; 50... Flow path tube body; 51... Valve core; 52... Slit; 52... Top surface; 52a... Protrusion; 56... Corrugated cylinder part; 57... Front end part; 57a... Annular groove; 58... Flange part; 60... Second housing; 61... Protruding connector insertion part; 62... Cap; 62a... Top surface; 63... Retainer; 65... Annular groove; 66... ​​Second flow path; 70... Resilient valve core; 71... Slit; 72... Top surface ; 82... Concave connector; 83... Mixing inlet; 84... Upstream port; 85... Downstream port; 100... Infusion tubing assembly (example of a medical device with a convex connector); 110... Infusion tubing assembly; 102... Connecting device; 103... Medical tubing; 104... Clip; 105... First connection; 106... Second connection; 107... Third connection; A... Extension direction of the flow path member; B... Radial direction of the flow path member; C... Circumferential direction of the flow path member; O... Central axis of the flow path member.

Claims

1. A male connector capable of connecting to a female connector having a resilient valve core, the male connector being characterized by comprising: The shell is divided into a hollow section; A flow path component extending within the hollow portion and having an opening formed at one end in the extending direction; and A valve core, located within the hollow portion, is capable of closing the opening of the flow path component. The housing includes: Shell body; as well as A movable body that deforms or moves the valve core by moving relative to the housing body in the extending direction, thereby changing the shape between a first shape and a second shape, wherein the first shape is in which the opening of the flow path member is closed by the valve core, and the second shape is in which the opening of the flow path member is open from the valve core. The movable body has a first locking portion, which, in the first configuration, when the valve core abuts against the resilient valve core of the recessed connector, can lock the locked portion of the recessed connector. The housing body has a second locking portion. In the second configuration, when the first locking portion locks the locked portion of the recessed connector, the second locking portion can also lock the locked portion of the recessed connector. If the second locking portion of the housing body is released from locking the recessed connector, the moving body moves relative to the housing body in the extending direction due to the restoring force of the deformed valve core or the force exerted by the force-applying member on the valve core or the moving body towards one end in the extending direction, and the shape changes from the second shape to the first shape. After the form changes from the second form to the first form, the moving body continues to move relative to the housing body in the extending direction by the restoring force or the action force, thereby releasing the state in which the first locking part locks the concave connector.

2. The convex connector according to claim 1, characterized in that, The first locking part of the moving body is provided only once in the circumferential direction of the flow path member, or multiple parts are provided at intervals.

3. The convex connector according to claim 1 or 2, characterized in that, The first locking portion of the movable body is movable in the radial direction by moving the movable body relative to the housing body in the extending direction.

4. The convex connector according to claim 1 or 2, characterized in that, The second locking portion of the housing body may be provided only once in the circumferential direction of the flow path component, or multiple portions may be provided at intervals.

5. The convex connector according to claim 1 or 2, characterized in that, The movable body includes a first movable body and a second movable body that are capable of relative movement in the extending direction. The second movable body is movable relative to the first movable body and the housing body in the extending direction when the first movable body is locked in a manner in which it does not move relative to the housing body in the extending direction.

6. A medical device, characterized in that, The connector comprising any one of claims 1 to 5.

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