WO2016133139A1 - レバーロック型オスコネクタ及びオスコネクタ組立体 - Google Patents
レバーロック型オスコネクタ及びオスコネクタ組立体 Download PDFInfo
- Publication number
- WO2016133139A1 WO2016133139A1 PCT/JP2016/054618 JP2016054618W WO2016133139A1 WO 2016133139 A1 WO2016133139 A1 WO 2016133139A1 JP 2016054618 W JP2016054618 W JP 2016054618W WO 2016133139 A1 WO2016133139 A1 WO 2016133139A1
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- WO
- WIPO (PCT)
- Prior art keywords
- lever
- male
- connector
- male connector
- luer
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
- A61M39/1011—Locking means for securing connection; Additional tamper safeties
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L37/00—Couplings of the quick-acting type
- F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
- F16L37/12—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members using hooks, pawls, or other movable or insertable locking members
- F16L37/133—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members using hooks, pawls, or other movable or insertable locking members using flexible hooks
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
- A61M2039/1016—Unlocking means providing a secure or comfortable disconnection
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
- A61M2039/1033—Swivel nut connectors, e.g. threaded connectors, bayonet-connectors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
- A61M2039/1066—Tube connectors; Tube couplings having protection means, e.g. sliding sleeve to protect connector itself, shrouds to protect a needle present in the connector, protective housing, isolating sheath
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
- A61M2039/1077—Adapters, e.g. couplings adapting a connector to one or several other connectors
Definitions
- the present invention relates to a male connector provided with a lever type lock mechanism for maintaining a connection state with a female connector. Moreover, this invention relates to the male connector assembly provided with the said male connector.
- circuits are used to transport various liquids such as chemicals, infusions, and blood.
- the circuit is generally formed by connecting containers, various instruments, tubes, and the like.
- a connector composed of a male connector and a female connector is used.
- a locking mechanism for locking the connection state between the male connector and the female connector is often provided so that the male connector and the female connector are not unintentionally separated during treatment. .
- Patent Document 1 describes a screw lock mechanism using screws.
- the male connector includes a male luer in which a tapered male taper surface is formed, and a lock nut that can rotate around the male luer.
- a female screw is formed on the lock nut.
- the female connector includes a female tapered surface that fits with the male tapered surface of the male luer, and a male screw that engages with a female screw of the lock nut.
- the screw lock mechanism has a problem that it is difficult for the user to accurately understand the screwed state of the male screw and the female screw. For this reason, if the male screw and the female screw are screwed together excessively, the screw may be damaged, and then it may be difficult to release the screwing. On the contrary, when the male screw and female screw are loosened, the male screw and female screw are loosened, and the liquid leaks between the male taper surface and the female taper surface. And the like may occur.
- Patent Literature 2 describes a lever locking mechanism that includes an elastically rotatable lever.
- the male connector includes a pair of levers so as to sandwich the male luer.
- the lever is held in a seesaw shape.
- a claw is formed at the tip of the lever. Insert the male luer into the female connector and engage the claw with the female connector (locked state).
- the lever is rotated by pressing the part (operation part) on the opposite side of the lever claw. Thereby, the engagement between the claw and the female connector is released.
- the lever lock mechanism is easy to connect and disconnect between the male connector and the female connector, so the workability is good. In addition, since the locked / unlocked state is switched depending on whether the lever claw is engaged with the female connector, the stability and reliability of the connected state are high.
- An object of the present invention is to solve the above-described problems of the conventional lever lock mechanism and reduce the possibility that the lock state is unintentionally released while maintaining good workability.
- the lever lock type male connector of the present invention has a connector main body including a rod-shaped male luer, a cylindrical hood surrounding the male luer, and a lever connected to a base end portion of the male luer via a base.
- the male luer is disposed coaxially with the central axis of the connector body.
- the lever includes a locking portion disposed on the same side as the male luer with respect to the base, an operation portion disposed on the opposite side of the male luer with respect to the base, and the male luer of the locking portion. And a locking claw protruding from the opposite side surface toward the male luer.
- locking part is distribute
- the lever can be elastically rotated so that when the outer surface of the operation portion is pressed, the locking claw is separated from the male luer.
- the connector main body when the connector main body is viewed along the central axis, the connector main body has a long axis in a direction in which the male luer and the lever face each other.
- the second lever lock male connector further has a lever rotation preventing mechanism for preventing the lever from rotating so that the locking claw is separated from the male luer.
- the male connector When the male connector is viewed along the central axis, the male connector has a long axis in a direction in which the male luer and the lever face each other.
- the male connector assembly of the present invention includes the first or second lever lock male connector and the screw lock connector of the present invention.
- the connector main body further includes a tubular portion communicating with the male luer on the opposite side of the base to the male luer.
- a female taper surface whose inner diameter increases as it approaches the tip is formed on the inner peripheral surface of the cylindrical portion.
- a male screw is formed on the outer peripheral surface of the cylindrical portion.
- the screw lock type connector includes a luer body provided with a male taper surface that fits with the female taper surface of the tubular part, and a lock nut rotatable around the luer body.
- the lock nut is provided with a female screw that is screwed with the male screw of the cylindrical portion.
- the connector body has a lever that is held in a seesaw shape by the base.
- the lever includes a locking claw that can be engaged with the female connector. Therefore, like the conventional male connector provided with the lever lock mechanism, the male connector and male connector assembly of the present invention having the connector main body are excellent in workability of connection and separation with respect to the female connector.
- the connector body or male connector when viewed along the central axis has a long axis in the direction in which the male luer and the lever face each other. Accordingly, when the male connector and the male connector assembly are placed under the patient with the central axis in the horizontal direction, the male connector and the male connector assembly easily rotate so that the major axis direction is in the horizontal direction. Therefore, the possibility that an unintended external force acts on the operation unit is low. As a result, there is a low possibility that the state in which the locking claw of the lever is engaged with the female connector (locked state) is unintentionally released.
- FIG. 1 is an exploded perspective view of a male connector assembly according to an embodiment of the present invention.
- FIG. 2A is a perspective view of the connector main body according to the embodiment of the present invention as viewed from above.
- FIG. 2B is a perspective view of the connector body as viewed from below.
- FIG. 2C is a front view of the connector main body.
- FIG. 2D is a side view of the connector body.
- FIG. 2E is a plan view of the connector body.
- FIG. 2F is a cross-sectional view of the connector body cut along a vertical plane including the line 2F-2F in FIG. 2D.
- FIG. 2G is a cross-sectional view of the connector body cut along a vertical plane including the line 2G-2G in FIG. 2C.
- FIG. 3A is a perspective view of a shield according to an embodiment of the present invention as viewed from above.
- FIG. 3B is a perspective view seen from below the shield.
- FIG. 3C is a cross-sectional view along the vertical plane of the shield.
- FIG. 4A is a perspective view of a lock ring according to an embodiment of the present invention as viewed from above.
- FIG. 4B is a plan view of the lock ring.
- FIG. 5A is a perspective view of a lever-lock male connector according to an embodiment of the present invention as viewed from above.
- FIG. 5B is a perspective view of the lever lock type male connector as viewed from below.
- FIG. 5C is a cross-sectional view of the lever-lock male connector.
- FIG. 5A is a perspective view of a lever-lock male connector according to an embodiment of the present invention as viewed from above.
- FIG. 5B is a perspective view of the lever lock type male connector as viewed from below.
- FIG. 5D is a cross-sectional view of another surface of the lever lock type male connector.
- FIG. 6A is a perspective view of a lure body according to an embodiment of the present invention.
- FIG. 6B is a cross-sectional view of the lure body.
- FIG. 7A is a perspective view of a lock nut according to an embodiment of the present invention as seen from above.
- FIG. 7B is a perspective view of the lock nut as viewed from below.
- FIG. 7C is a plan view of the lock nut.
- FIG. 7D is a cross-sectional view of the lock nut cut along the vertical plane including line 7D-7D in FIG. 7C.
- FIG. 8A is a perspective view of a screw lock type connector according to an embodiment of the present invention.
- FIG. 8A is a perspective view of a screw lock type connector according to an embodiment of the present invention.
- FIG. 8B is a cross-sectional view of the screw lock type connector.
- FIG. 9A is a side view of a male connector assembly according to an embodiment of the present invention.
- FIG. 9B is a cross-sectional view of the male connector assembly.
- FIG. 10A is a perspective view of an example of a female connector to which a male connector assembly according to an embodiment of the present invention is connected.
- FIG. 10B is a cross-sectional view of the female connector.
- FIG. 11 is a perspective view of a male connector assembly according to an embodiment of the present invention immediately before connection to a female connector.
- FIG. 12 is a perspective view of a male connector assembly according to one embodiment of the present invention, with the lever pawl engaging the female connector and the lock ring in the uppermost position.
- FIG. 13A is a perspective view of a male connector assembly according to an embodiment of the present invention in which connection with a female connector is completed.
- FIG. 13B is a front view of FIG. 13A.
- FIG. 13C is a side view of FIG. 13A.
- 13D is a cross-sectional view taken along the line including the line 13D-13D in FIG. 13C.
- FIG. 13E is a cross-sectional view taken along the line including the line 13E-13E in FIG. 13B.
- FIG. 14 is a plan view of a connector main body according to another embodiment of the present invention.
- FIG. 15 is a plan view of a connector main body according to another embodiment of the present invention.
- FIG. 16A is a perspective view of a connector main body according to still another embodiment of the present invention as viewed from above.
- FIG. 16B is a perspective view of the connector main body shown in FIG. 16A as viewed from below.
- FIG. 16C is a plan view of the connector main body shown in FIG. 16A.
- FIG. 17A is a perspective view of a lever-lock type male connector using the connector main body shown in FIGS. 16A to 16C.
- FIG. 17B is a plan view of the lever-locked male connector shown in FIG. 17A.
- the “major axis” means an axis along the direction in which the outer dimension is maximized. Therefore, when viewed along the central axis (that is, when viewed in plan), the connector main body (or male connector) is “having a long axis in the direction in which the male luer and the lever face each other”. This means that the outer dimension of the connector body (or male connector) when viewed along the line is maximized in the direction in which the male luer and the lever face each other.
- Outside dimension is the distance between two points where a straight line perpendicular to the central axis intersects the contour (projected shape along the central axis) that defines the outer shape of the connector body (or male connector) viewed along the central axis. Defined by distance.
- the central axis of the connector main body when the connector main body (or male connector) has a long axis in the direction in which the male luer and the lever face each other when viewed along the central axis, the central axis of the connector main body (or male connector) is used.
- the contour shape (that is, the projected shape along the central axis) when viewed along is arbitrary.
- the contour shape is symmetric with respect to the major axis.
- the minor axis of the contour shape is orthogonal to the major axis at the central axis.
- the “short axis” means an axis along the direction in which the outer dimension is minimized.
- the contour shape has only one major axis.
- the contour shape has only one minor axis. Accordingly, a shape having two or more major axes (for example, a regular polygon such as a square) and a circle whose outer dimension is constant in any direction around the central axis are contours of the connector body and the male connector of the present invention. It is not preferable as a shape. Even when the contour shape has a convex portion or a concave portion, the convex portion or the concave portion is fine as viewed from the whole contour shape, and serves as an underlay for the male connector and the male connector assembly. If it is determined that the convex portion or the concave portion does not substantially affect the rotation in the case of the rotation, the major axis, the short axis, and the contour shape may be defined ignoring the convex portion or the concave portion.
- the outline of the connector body when viewed along the central axis is substantially elliptical.
- the male connector and the male connector assembly provided with such a connector main body have a substantially elliptical long-axis direction horizontally when the center axis is horizontal and the patient is laid down. Rotate more easily to face the direction. Therefore, the possibility that the latching claw of the lever is engaged with the female connector (locked state) unintentionally is further reduced.
- the first male connector of the present invention may further include a lever rotation preventing mechanism that prevents the lever from rotating so that the locking claw is separated from the male luer. According to such a preferable configuration, the possibility that the locking claw of the lever is engaged with the female connector (locked state) unintentionally is further reduced.
- the lever rotation preventing mechanism does not protrude beyond the connector body (in particular, the substantially elliptical outline of the connector body). . According to such a preferable configuration, the male connector and the male connector assembly are easily rotated such that the major axis direction is directed to the horizontal direction when the patient is laid down.
- the outline of the male connector when viewed along the central axis is substantially elliptical.
- the major axis direction of the substantially elliptical shape is the horizontal direction. Rotate more easily to face. Therefore, the possibility that the latching claw of the lever is engaged with the female connector (locked state) unintentionally is further reduced.
- the substantially elliptical outline may be constituted by the connector body and the lever rotation preventing mechanism. According to this configuration, the degree of freedom in designing the connector main body and the lever rotation preventing mechanism is improved.
- the lever rotation preventing mechanism may be disposed so as to contact the inner surface of the operation unit. According to such a preferable configuration, the configuration of the lever rotation preventing mechanism can be simplified and the reliability of the operation can be improved. In addition, a lever rotation preventing mechanism that does not protrude from the substantially elliptical outline of the connector body when viewed along the central axis can be easily realized.
- the lever rotation preventing mechanism can be displaced between a first position where the lever can be rotated and a second position where the lever cannot be rotated. According to such a preferable configuration, it is possible to switch between enabling / disabling of the lever rotation prevention mechanism by an extremely simple operation of moving the lever rotation prevention mechanism.
- the male connector according to the present invention is configured such that the lever rotation preventing mechanism at the first position prevents the lever rotation preventing mechanism from moving toward the second position, or the second position at the second position.
- a second movement prevention mechanism that prevents the lever rotation prevention mechanism from moving toward the first position may be provided.
- the male connector of the present invention can include both the first movement prevention mechanism and the second movement prevention mechanism. Providing the first movement preventing mechanism prevents the workability of the connection between the male connector and the female connector from deteriorating due to the movement of the lever rotation preventing mechanism at the first position toward the second position. Can do. By providing the second movement prevention mechanism, the lever rotation prevention mechanism in the second position moves toward the first position, so that the engagement between the lever locking claw and the female connector is unintentionally released. Can be prevented.
- the tip of the hood may be a circle that is coaxial with the central axis.
- the outer diameter at the tip of the hood is equal to or smaller than the minor diameter along the minor axis of the substantially elliptical shape.
- the upper part (hood side) of the base can be reduced in size.
- the operating portion of the lever may be located closer to the central axis than a portion connected to the base of the lever. According to such a preferable configuration, when the male connector collides with surrounding devices, or when the male connector becomes an underlay of the patient's body, the possibility that an unintended external force acts on the operation unit is low. For this reason, the possibility that the locking claw of the lever is engaged with the female connector (locked state) unintentionally is further reduced.
- the portion of the male connector that protrudes most in the radial direction from the central axis may be a portion (lever base) connected to the base of the lever. According to such a preferable configuration, the possibility that an unintended external force is applied to the lever base portion is high, and the possibility that it is applied to the operation portion is low. For this reason, the possibility that the locking claw of the lever is engaged with the female connector (locked state) unintentionally is further reduced.
- a channel through which liquid flows in the male luer may be provided.
- An opening communicating with the flow path may be provided on the outer peripheral surface of the male luer.
- the male connector may further include a shield that closes the opening.
- the shield is preferably compressed and deformed in the longitudinal direction of the male luer, and the opening is exposed.
- the above male connector of the present invention can include two levers.
- the two levers are arranged at symmetrical positions with respect to the central axis. According to such a preferable configuration, the female connector can be stably held by the two locking claws, so that the locked state can be stably maintained.
- the male tapered surface of the luer body is fitted to the female tapered surface of the cylindrical portion, and the female screw of the lock nut is screwed onto the male screw of the cylindrical portion.
- the rotation preventing mechanism also functions as a lever rotation preventing mechanism that prevents the lever from rotating so that the locking claw is separated from the male luer. According to such a preferable configuration, the number of members constituting the male connector assembly can be reduced, and the configuration of the male connector assembly can be simplified.
- the rotation prevention mechanism may have an annular shape with an opening formed in the center.
- the cylindrical portion or the lure body is disposed in the opening of the rotation prevention mechanism. According to such a preferable configuration, it is possible to easily realize the rotation prevention mechanism that prevents the lock nut from rotating by engaging or fitting with the lock nut.
- FIG. 1 is an exploded perspective view of a male connector assembly 1 according to an embodiment of the present invention.
- the male connector assembly 1 includes a lever lock type male connector (hereinafter simply referred to as “male connector”) 2 and a screw lock type connector 100.
- the male connector 2 includes a connector main body 3, a shield 6, and a lock ring 8.
- the screw lock connector 100 includes a luer body 110 and a lock nut 120.
- the flexible tube 190 is connected to the male connector 2 via the screw lock type connector 100.
- FIG. 2A is a perspective view of the connector body 3 as viewed from above
- FIG. 2B is a perspective view of the connector body 3 as viewed from below
- 2C, 2D, and 2E are a front view, a side view, and a plan view of the connector main body 3 in order.
- FIG. 2F is a cross-sectional view of the connector main body 3 cut along a vertical plane including the line 2F-2F in FIG. 2D
- FIG. 2G is a cross-sectional view of the connector main body 3 cut along a vertical plane including the line 2G-2G in FIG. 2C. 2F and 2G
- the alternate long and short dash line 3a is the central axis of the connector body 3.
- the central axis 3a is also the central axis of all members (see FIG. 1) constituting the male connector assembly 1.
- the direction parallel to the central axis 3a is “up and down direction”
- the direction parallel to the plane perpendicular to the central axis 3a is “horizontal direction”
- the direction perpendicular to the central axis 3a is “radial direction”.
- the “radial direction” and the direction of rotation around the central axis 3 a are referred to as “circumferential direction”.
- the side closer to the central axis 3a is referred to as “inner side” and the side farther from the central axis 3a is referred to as “outer side”.
- “Upper” and “Lower” are defined based on FIGS. 1 and 2A.
- the “vertical direction” and “horizontal direction” do not mean the orientation of the male connector 2 and the male connector assembly 1 in actual use.
- the connector main body 3 includes a male luer 10 as a male member.
- the male luer 10 is a rod-like member extending along the central axis 3a coaxially with the central axis 3a.
- the outer peripheral surface (side surface) of the male luer 10 is a cylindrical surface whose outer diameter is constant in the direction of the central axis 3a in the portion inserted into the female member (a septum 210 described later) in the vicinity of the tip 10a.
- the portion in the vicinity of the base end portion 13 is a tapered surface (conical surface) whose outer diameter decreases as it approaches the distal end 10a.
- the shape of the outer peripheral surface of the male luer 10 is not limited to this, and can be arbitrarily selected.
- the outer peripheral surface of the male luer 10 may be a cylindrical surface whose outer diameter is constant from the proximal end portion 13 to the distal end 10a.
- the outer peripheral surface of the male luer 10 may be a smooth curved surface whose outer diameter gradually decreases as it approaches the distal end 10 a from the base end portion 13.
- a flow path 11 is formed along the central axis 3a.
- the channel 11 is not open at the tip 10 a of the male luer 10.
- Two lateral holes 12 communicating with the flow path 11 are formed at positions near the front end 10 a of the outer peripheral surface of the male luer 10.
- Each lateral hole 12 penetrates the male luer 10 in the radial direction and opens on the outer peripheral surface of the male luer 10.
- the number of the horizontal holes 12 does not need to be two, and may be one or three or more.
- the base 15 protrudes outward from the base end portion 13 of the male luer 10.
- the base 15 is a flat plate-like member parallel to the horizontal direction. As can be understood from FIG. 2E, the base 15 has a substantially elliptical shape when viewed along the central axis 3a.
- the cylindrical portion 17 protrudes downward from the base 15.
- the cylindrical portion 17 has a substantially cylindrical shape that is coaxial with the central axis 3 a, and a flow path that communicates with the flow path 11 of the male luer 10 is formed.
- the inner peripheral surface 17a of the cylindrical portion 17 is a female taper surface (for example, a 6% taper surface) whose inner diameter increases as the distance from the base 15 increases.
- a male screw 18 is formed on the outer peripheral surface of the cylindrical portion 17.
- the hood 20 is erected from the outer edge of the base 15 on the same side as the male luer 10.
- the hood 20 has a hollow cylindrical shape surrounding the male luer 10.
- the hood 20 is open upward.
- a front end (upper end) 20a of the hood 20 surrounding the opening 21 is a circle coaxial with the central axis 3a.
- the tip 20 a of the hood 20 is located at a position higher than the tip 10 a of the male luer 10.
- a pair of cutouts 23 are provided on the side wall of the hood 20.
- the notch 23 is a hole (opening) penetrating the hood 20 in the radial direction.
- the pair of notches 23 oppose each other with the male luer 10 in between.
- the direction in which the pair of notches 23 face each other coincides with the direction of the long axis 15a (see FIG. 2E) of the base 15 having a substantially elliptical shape.
- the notch 23 has an inverted “U” shape (see FIG. 2D), and its lower end reaches the base 15. On the other hand, the notch 23 does not reach the tip 20 a of the hood 20.
- a pair of levers 30 face each other with the central axis 3a interposed therebetween.
- the direction in which the pair of levers 30 face each other coincides with the direction of the long axis 15a (see FIG. 2E) of the base 15 having a substantially elliptical shape.
- the lever 30 is a strip-shaped member extending substantially parallel to the central axis 3a.
- the longitudinal direction of the lever 30 is along the vertical surface including the central axis 3a and the long axis 15a.
- the lever 30 is connected to the outer edge of the base 15.
- the lever 30 includes a locking portion 31 disposed on the same side (upper side) as the male luer 10 with respect to the base 15, and an operation portion 35 disposed on the opposite side (lower side) of the male luer 10 with respect to the base 15. Is provided. A portion of the lever 30 to which the base 15 is connected between the locking portion 31 and the operation portion 35 is referred to as a lever base portion 39.
- the locking portion 31 is disposed in a notch 23 formed in the hood 20.
- the locking portion 31 is surrounded by an inverted “U” -shaped slit 23 that penetrates the hood 20 in the radial direction (see FIG. 2D).
- the locking claw 32 protrudes toward the male luer 10 from the surface (inner surface) of the locking portion 31 on the side facing the male luer 10.
- the locking claw 32 includes an inclined surface 32a and an engaging surface 32b.
- the inclined surface 32 a is inclined so as to move away from the male luer 10 as the distance from the base 15 increases.
- the engagement surface 32b is disposed on the base 15 side with respect to the inclined surface 32a, and is a plane substantially parallel to a horizontal plane (a plane orthogonal to the central axis 3a). As shown in FIG. 2E, when viewed from above, the top of the claw 32 (the portion closest to the male luer 10) protrudes toward the male luer 10 from the tip 20 a surrounding the opening 21 of the hood 20.
- the lever 30 functions as a “lever lock mechanism” that maintains a state in which the male connector 2 and the female connector are connected. Since the two levers 30 are arranged in a symmetrical position with respect to the central axis 3a (that is, the male luer 10), the two locking claws 32 are engaged with the female connector in a symmetrical position with respect to the central axis 3a. Can do. Therefore, since the female connector can be stably held, the reliability of the lever lock mechanism is improved. A state where the locking claw 32 is engaged with the female connector is referred to as a “locked state”.
- the lever 30 has a mechanical strength such that the entire portion from the upper end (the locking portion 31) to the lower end (the operation portion 35) can be regarded as a substantially rigid body.
- the mechanical strength of the base 15 that connects the base end portion 13 of the male luer 10 and the lever 30 is relatively low. Therefore, as shown in FIG. 2F, when a force F is applied to the outer surface of the operation portion 35 toward the central axis 3a, the base 15 is elastically bent and deformed, and the locking portion 31 and the engagement formed thereon are formed.
- the lever 30 can be rotated (or oscillated) so that the pawl 32 is separated from the male luer 10 (in the direction of arrow A).
- a rib 36 protruding toward the central axis 3a extends along the vertical direction on the inner side surface (the surface facing the cylindrical portion 17) of the operation portion 35. .
- a stop protrusion 38 that protrudes further toward the central axis 3 a than the rib 36 is provided at the lower end of the rib 36.
- a locking protrusion 37 protruding toward the central axis 3a is provided at a position slightly away from the stop protrusion 38 upward. The protruding amount of the locking projection 37 from the inner surface of the operation portion 35 is smaller than the stop projection 38.
- the sliding rib 35a extended along the up-down direction protrudes. Further, a press-contact rib 35b protrudes from a position near the base 15 on the side surface of the operation portion 35 adjacent to the side opposite to the cylindrical portion 17 with respect to the slide rib 35a.
- a pair of holes 16 penetrating the base 15 in the vertical direction are formed in the base 15.
- the hole 16 is disposed on the short axis 15b (see FIG. 2E) of the base 15 having a substantially elliptical shape.
- the connector body 3 when viewed along the direction orthogonal to the central axis 3a and the long axis 15a (when viewed from the front), the connector body 3 is at the maximum at the position of the base 15 (ie, the lever base 39). Horizontal dimension.
- the portion above the base 15 of the connector body 3 has a tapered shape (or trapezoidal shape) in which the horizontal dimension gradually decreases as the distance from the base 15 increases.
- the locking portion 31 of the lever 30 and the portion of the hood 20 above this are along a common straight line.
- the operating portion 35 of the lever 30 is located closer to the cylindrical portion 17 (or the central shaft 3a) than the lever base 39.
- the lever base 39 of the lever 30 protrudes most outward from the central axis 3a in the horizontal direction, rather than the locking portion 31 and the operation portion 35.
- the portion above the base 15 of the connector main body 3 extends from the base 15 to the hood 20. It is a rectangle whose horizontal dimension is substantially constant up to the tip 20a.
- the horizontal dimension of the operating portion 35 of the lever 30 is smaller than the horizontal dimension of the base 15 and the portion of the connector main body 3 above it.
- the outer dimension of the connector body 3 is the direction in which the male luer 10 and the lever 30 face each other (the horizontal direction in FIG. 2E).
- the outline (projected shape) of the connector main body 3 of the present embodiment is a substantially elliptical shape having the long axis 15a in the direction in which the outer dimension is maximum and the short axis 15b in the direction in which the outer dimension is minimum.
- the substantially elliptical shape is based on the shape of the connector main body 3 at the position of the base 15 (or the lever base 39).
- the major axis 15a and the minor axis 15b are orthogonal to each other at the central axis 3a.
- the front end 20a of the hood 20 has a circular shape that is coaxial with the central axis 3a, and is inscribed in the outline of the connector body 3 that is substantially elliptical.
- the schematic shape of the outer peripheral surface of the connector body 3 above the base 15 is smoothly rounded at the tip 20 a of the hood 20 and substantially elliptical at the position of the base 15. It is a curved surface that connects.
- the curved surface is constituted by the outer peripheral surface of the hood 20 and the outer peripheral surface of the lever 30.
- the connector body 3 is preferably made of a hard material. Specifically, resin materials such as polyacetal, polycarbonate, polystyrene, polyamide, polypropylene, and hard polyvinyl chloride can be used.
- the connector main body 3 can be integrally formed as a single part using such a resin material by an injection molding method or the like.
- FIG. 3A is a perspective view of the shield 6 as viewed from above
- FIG. 3B is a perspective view of the shield 6 as viewed from below
- FIG. 3C is a cross-sectional view of the shield.
- the shield 6 includes a head 61, an outer peripheral wall 65, and a base 68 in this order from the top to the bottom. As shown in FIG. 3C, the shield 6 has a substantially cylindrical shape penetrating in the vertical direction.
- the shield 6 is integrally formed as a single part using a soft material (so-called elastomer) having rubber elasticity (or flexibility).
- elastomer a soft material having rubber elasticity (or flexibility).
- the material of the shield 6 is not limited, but for example, isoprene rubber, silicone rubber, butyl rubber, thermoplastic elastomer, or the like can be used.
- the head 61 is formed with a through hole 62 penetrating in the vertical direction.
- the inner peripheral surface of the through-hole 62 preferably has a shape along the outer peripheral surface of the male luer 10 so as to be in close contact with the outer peripheral surface of the male luer 10 of the connector body 3.
- the inner peripheral surface of the through hole 62 is a cylindrical surface whose inner diameter is constant in the vertical direction.
- the inner diameter of the through hole 62 is preferably the same as or slightly smaller than the outer diameter of the male luer 10 of the connector body 3.
- the outer peripheral wall 65 is elastically compressed and deformed so that the vertical dimension is shortened when a vertical compressive force is applied to the shield 6 (see FIGS. 13D and 13E described later). As shown in FIG. 3C, the outer peripheral wall 65 has a larger inner diameter than the through hole 62 of the head 61.
- the outer peripheral wall 65 is separated from the male luer 10 in the radial direction (see FIGS. 5C and 5D described later). For this reason, when the outer peripheral wall 65 is compressed and deformed in the vertical direction, the possibility that the inner peripheral surface of the outer peripheral wall 65 collides with the male luer 10 is reduced. This is advantageous in increasing the amount of compressive deformation in the vertical direction of the outer peripheral wall 65.
- the outer peripheral wall 65 has a tapered (conical) portion whose outer diameter and inner diameter increase as the distance from the head 61 increases, and a cylindrical portion whose outer diameter and inner diameter are constant in the vertical direction. Alternatingly arranged. For this reason, the outer peripheral wall 65 has a thin conical shape on the head 61 side as a whole. This shape enables the outer peripheral wall 65 to be deformed so that the tapered portion is indented into the cylindrical portion under the compressive force in the vertical direction applied to the shield 6 (see FIG. 13D described later). , See FIG. 13E). This is advantageous in increasing the amount of compressive deformation in the vertical direction of the outer peripheral wall 65.
- the base 68 has a flat bottom surface 68a.
- a pair of fixing protrusions 69 protrude downward from the bottom surface 68a. From the outer peripheral surface of the fixed protrusion 69, a fixed claw 69a protrudes outward.
- the fixing protrusion 69 and the fixing claw 69 a are used for fixing the shield 6 to the connector main body 3.
- FIG. 4A is a perspective view of the lock ring 8 as viewed from above
- FIG. 4B is a plan view of the lock ring 8.
- the lock ring 8 has an annular shape with a circular opening 81 formed in the center.
- An inner peripheral surface 82 surrounding the opening 81 is a cylindrical surface.
- a plurality of ribs 83 project from the inner peripheral surface 82 into the opening 81.
- the rib 83 extends along the vertical direction.
- the number of ribs 83 is eight, but the number of ribs 83 is not limited to this, and may be more or less.
- the ribs 83 are preferably arranged at equal intervals in the circumferential direction.
- the lock ring 8 includes a pair of arched portions 85 arranged to face each other.
- a pair of bridging portions 88 connect the pair of arched portions 85.
- FIG. 4B when the lock ring 8 is viewed from above (plan view), the outer surface of the arch-shaped portion 85 has a substantially elliptical contour when the connector body 3 is viewed in plan (FIG. 2E). It is almost the same as the ellipse.
- the arcuate portion 85 is disposed on the substantially elliptical short axis.
- the bridging portion 88 is disposed on the major axis of the substantially ellipse at a position retreated inward from the substantially ellipse.
- the substantially oval shape is notched by a pair of notches 86 provided on the major axis.
- the surface facing the outside of the bridging portion 88 is a flat surface parallel to the vertical direction. On this flat surface, a groove 87 is formed along the vertical direction.
- the sliding rib 85a protrudes from the both ends of the arch-shaped part 85 toward the arch-shaped part 85 which opposes.
- the sliding rib 85a extends along the vertical direction.
- the lock ring 8 is rotationally symmetric twice (overlapping with the state before rotation when rotated 180 degrees). Although illustration is omitted, the lock ring 8 has the same shape even if it is turned upside down.
- the lock ring 8 is preferably made of a hard material. Specifically, resin materials such as polyacetal, polycarbonate, polystyrene, polyamide, polypropylene, and hard polyvinyl chloride can be used.
- the lock ring 8 can be integrally formed as a single part using these resin materials by an injection molding method or the like.
- FIG. 5A is a perspective view seen from above the male connector 2 in which the shield 6 and the lock ring 8 are attached to the connector main body 3
- FIG. 5B is a perspective view seen from below the male connector 2.
- 5C is a cross-sectional view of the male connector 2 along a plane including the central axis 3a and the long axis 15a
- FIG. 5D is a cross-sectional view of the male connector 2 along a plane including the central axis 3a and the short axis 15b.
- the plan view of the male connector 2 is the same as that shown in FIG. 2E except that the shield 6 is provided.
- the fixing protrusion 69 of the shield 6 is inserted into the hole 16 provided in the base 15 of the connector main body 3.
- the fixed claw 69 a passes through the hole 16 and engages with the lower surface of the base 15.
- the bottom surface 68a of the shield 6 is in close contact with the upper surface of the base 15 (FIG. 5C).
- the tip 10a of the male luer 10 and its vicinity are inserted into the through hole 62 of the head 61 of the shield 6.
- the tip 10 a of the male luer 10 is exposed in the through hole 62 of the head 61.
- the inner peripheral surface of the through hole 62 is in close contact with the outer peripheral surface while being appropriately deformed according to the outer shape of the outer peripheral surface of the male luer 10.
- the opening of the lateral hole 12 of the male luer 10 is liquid-tightly closed by the inner peripheral surface of the through hole 62.
- the outer peripheral wall 65 of the shield 6 is separated from the male luer 10 in the radial direction. For this reason, a liquid-tight space is formed between the shield 6 and the connector body 3. Further, the outer peripheral wall 65 is spaced apart from both the hood 20 and the lever 30 in the radial direction.
- the cylindrical portion 17 of the connector main body 3 is inserted into the opening 81 (see FIG. 4A) of the lock ring 8.
- the operation portion 35 of the connector main body 3 is fitted into the notch 86 (see FIG. 4A) of the lock ring 8.
- the ribs 36 provided in the operation part 35 are fitted into the grooves 87 provided in the bridging part 88. For this reason, the lock ring 8 cannot rotate with respect to the connector body 3.
- the lock ring 8 is movable in the vertical direction while being sandwiched between the pair of operation portions 35 as described above.
- the upward movement of the lock ring 8 is restricted by the collision of the lock ring 8 with the lower surface of the base 15.
- the downward movement of the lock ring 8 is restricted when the lock ring 8 collides with a stop protrusion 38 provided on the operation unit 35.
- 5A to 5D show a state where the lock ring 8 is moved to the uppermost position (uppermost position).
- the sliding rib 85a (see FIGS. 4A and 4B) of the lock ring 8 is directed to the press-contact rib 35b (see FIG. 2B) of the operating portion 35a in the direction of the long axis 15a (FIG. 2E). Abut.
- the frictional force between the sliding rib 85a and the pressure-contacting rib 35b prevents the lock ring 8 from descending from the uppermost position due to gravity or vibration. That is, the press-contact rib 35b that contacts the lock ring 8 constitutes a “first movement prevention mechanism” that prevents the lock ring 8 at the uppermost position from unintentionally descending.
- Screw lock type connector 2.1 Luer body
- the luer body 110 constituting the screw lock connector 100 will be described.
- 6A is a perspective view of the luer body 110
- FIG. 6B is a cross-sectional view of the luer body 110.
- the lure main body 110 has a substantially cylindrical shape as a whole in which a through-hole (flow path) 111 is formed along the longitudinal direction thereof.
- the luer body 110 includes a male luer 112, a cylindrical portion 115, and a connecting portion 119 in this order from top to bottom.
- the outer peripheral surface 112a of the male luer 112 is a male taper surface (for example, a 6% taper surface) whose outer diameter decreases as it approaches the tip.
- the outer peripheral surface of the cylindrical part 115 is a cylindrical surface whose outer diameter is constant in the vertical direction.
- a pair of convex portions 116 protrudes outward from the outer peripheral surface of the cylindrical portion 115.
- An annular protrusion 117 that is continuous in the circumferential direction is provided at the boundary between the male luer 112 and the cylindrical portion 115.
- the annular protrusion 117 has a larger outer diameter than the male luer 112 and the cylindrical portion 115.
- the lure body 110 is preferably made of a hard material. Specifically, resin materials such as polyacetal, polycarbonate, polystyrene, polyamide, polypropylene, and hard polyvinyl chloride can be used.
- resin materials such as polyacetal, polycarbonate, polystyrene, polyamide, polypropylene, and hard polyvinyl chloride can be used.
- the luer main body 110 can be integrally formed as a single part using these resin materials by an injection molding method or the like.
- FIG. 7A is a perspective view of the lock nut 120 as viewed from above
- FIG. 7B is a perspective view of the lock nut 120 as viewed from below
- FIG. 7C is a plan view of the lock nut 120
- FIG. 7D is a cross-sectional view of the lock nut 120.
- the lock nut 120 has a hollow, generally cylindrical shape as a whole.
- the outer peripheral surface of the lock nut 120 is composed of two cylindrical surfaces having different outer diameters.
- a plurality of ribs 123 project outward from a cylindrical surface having a relatively large outer diameter on the upper side.
- the rib 123 extends along the vertical direction.
- the number of ribs 123 is eight, but is not limited to this, and may be more or less.
- the ribs 83 are preferably arranged at equal intervals in the circumferential direction.
- the outer peripheral surface of the lock nut 120 is composed of two cylindrical surfaces, but the present invention is not limited to this. For example, you may be comprised with the single cylindrical surface from the upper end to the lower end.
- the outer peripheral surface may include a surface other than the cylindrical surface (for example, a polygonal column surface).
- a female screw 128 is formed on the inner peripheral surface of the lock nut 120 in a region from the upper end to the approximate center.
- a portion of the inner peripheral surface of the lock nut 120 below the female screw 128 is a cylindrical surface 125 having a constant inner diameter.
- a position restricting protrusion 127 extending in the circumferential direction protrudes from the cylindrical surface 125.
- a pair of guide paths 126 are formed on the position restricting protrusion 127.
- the guide path 126 extends in the vertical direction.
- the guide path 126 divides the position restricting protrusion 127 in the circumferential direction.
- the lock nut 120 is preferably made of a hard material. Specifically, resin materials such as polyacetal, polycarbonate, polystyrene, polyamide, polypropylene, and hard polyvinyl chloride can be used.
- the lock nut 120 can be integrally formed as a single part using such a resin material by an injection molding method or the like.
- a flexible tube 190 is passed through the lock nut 120. Then, the connection part 119 of the luer body 110 is inserted into the upper end of the tube 190. Subsequently, the lock nut 120 is raised. The luer body 110 is inserted into the female screw 128 of the lock nut 120. The protrusion 116 protruding from the outer peripheral surface of the luer main body 110 may collide with the position restricting protrusion 127 protruding from the inner peripheral surface of the lock nut 120. In this case, the lock nut 120 is slightly rotated with respect to the luer body 110.
- the screw lock connector 100 can be assembled as shown in FIGS. 8A and 8B.
- the position restricting protrusion 127 of the lock nut 120 is located between the annular protrusion 117 of the luer body 110 and the convex portion 116. Since the position restricting protrusion 127 collides with the annular protrusion 117 and the convex portion 116, the lock nut 120 is restricted from moving upward (tapered surface 112 side) and downward (connecting portion 119 side) with respect to the luer body 110. The However, the lock nut 120 can freely rotate around the luer body 110.
- male connector and screw lock type connector (assembly of male connector assembly)
- the male connector 2 (FIGS. 5A to 5D) and the screw lock type connector 100 (FIGS. 8A and 8B) are connected by inserting the male luer 112 of the luer main body 110 into the cylindrical portion 17 of the connector main body 3 and This is possible by screwing the female screw 128 into the male screw 18 of the cylindrical portion 17.
- FIG. 9A is a side view of the male connector assembly 1 obtained by connecting the male connector 2 and the screw lock connector 100
- FIG. 9B is a cross-sectional view of the male connector assembly 1.
- the outer peripheral surface 112a of the male luer 112 and the inner peripheral surface 17a of the cylindrical portion 17 are tapered surfaces having the same diameter and taper angle. Therefore, as shown in FIG. 9B, the outer peripheral surface 112a and the inner peripheral surface 17a are in close contact with each other in a liquid-tight manner. Thus, the tube 190 and the flow path 11 of the male luer 10 are communicated.
- the female screw 128 of the lock nut 120 and the male screw 18 of the cylindrical portion 17 are screwed together. Further, the position restricting protrusion 127 of the lock nut 120 and the annular protrusion 117 of the luer body 110 are engaged. For this reason, the male luer 112 and the cylindrical part 17 are firmly connected. Even if an unintended tensile force acts between the male connector 2 (or the connector main body 3) and the screw lock type connector 100 (or the luer main body 110), they are not separated.
- the lock nut 120 is disposed between the pair of operation portions 35.
- the lock nut 120 In an initial state in which the lock ring 8 is moved to the uppermost position, the lock nut 120 is positioned below the lock ring 8. Therefore, the rib 123 formed on the outer peripheral surface of the lock nut 120 is used as a slip stopper, and the lock nut 120 is rotated, so that the female screw 128 can be screwed into the male screw 18 or the screw can be loosened. .
- FIGS. 10A and 10B An example of the female connector is shown in FIGS. 10A and 10B.
- FIG. 10A is a perspective view of the female connector 200
- FIG. 10B is a cross-sectional view of the female connector 200.
- the female connector 200 includes a disc-shaped partition member (hereinafter referred to as “septum”) 210, a base 220 and a cap 230 that sandwich and fix the septum 210 in the vertical direction.
- septum a disc-shaped partition member
- a linear slit (cut) 211 penetrating the septum 210 in the vertical direction is formed.
- the material of the septum 210 is not limited, but is preferably a soft material having rubber elasticity.
- isoprene rubber, silicone rubber, butyl rubber, thermoplastic elastomer, or the like can be used.
- the base 220 includes a pedestal 221 having a substantially cylindrical shape on the upper side thereof.
- the outer peripheral surface of the base 221 is a cylindrical surface.
- a pair of engaging claws 222 and an annular protrusion 223 protrude outward from the outer peripheral surface of the base 221.
- the annular protrusion 223 is slightly spaced downward from the engagement claw 222.
- a male luer 227 communicating with the lumen 225 of the pedestal 221 and a female screw 228 coaxial with the male luer 227.
- the outer peripheral surface of the male luer 227 is a male tapered surface (conical surface) whose outer diameter decreases as it approaches the tip (that is, as it moves away from the base 221).
- the cap 230 includes a top plate 231 having a disc shape, and a peripheral wall 235 having a cylindrical shape extending downward from the outer peripheral edge of the top plate 231.
- a circular opening (through hole) 232 is formed at the center of the top plate 231.
- a pair of engagement holes 236 are formed in the peripheral wall 235.
- the engagement hole 236 is a through hole that penetrates the peripheral wall 235 in the radial direction.
- the septum 210 is placed on the upper end of the base 221 and the cap 230 is put on the septum 210 from above.
- the engaging claw 222 formed on the base 221 is fitted into the engaging hole 236 formed in the cap 230, whereby the cap 230 is engaged with the engaging claw 222.
- the cap 230 is fixed to the base 220 (see FIG. 10A).
- the septum 210 is sandwiched between the upper end of the base 221 and the top plate 231 of the cap 230 in the thickness direction (that is, the vertical direction).
- the slit 211 of the septum 210 is exposed in an opening 232 formed in the top plate 231.
- the annular protrusion 223 formed on the base 220 is adjacent to the lower side with respect to the peripheral wall 235 of the cap 230.
- the top surface of the annular protrusion 223 forms a cylindrical surface that is substantially the same as the outer peripheral surface of the peripheral wall 235.
- the female connector 200 including the septum 210 in which the slit 211 is formed is generally called a needleless port.
- the male connector assembly 1 and the female connector 200 are opposed to each other.
- a flexible tube is connected to the male luer 227 of the female connector 200 directly or indirectly through some member.
- the tip 10a (see FIG. 9B) of the male luer 10 abuts on a septum 210 (see FIGS. 10A and 10B) exposed in the opening 232 of the cap 230, and then the septum 210 is deformed to form a slit. Enter 211.
- the head 61 of the shield 6 contacts the septum 210 or the top plate 231 of the cap 230.
- the shield 6 is compressed in the vertical direction, and the outer peripheral wall 65 is deformed to reduce its vertical dimension.
- FIG. 12 is a side view showing this state.
- the positions of the lever 30 and the lock ring 8 are the same as in the initial state shown in FIGS. 5A and 9A.
- the lock ring 8 is moved downward until it collides with a stop protrusion 38 provided on the operation unit 35.
- a locking projection 37 is provided on the inner side surface of the operation unit 35 above the stop projection 38 (see FIG. 5B).
- the bridging portion 88 gets over the locking projection 37. The operator can feel as a click feeling that the force for moving the lock ring 8 changes when the bridging portion 88 gets over the locking projection 37.
- 13A, 13B, and 13C are a perspective view, a front view, and a side view showing a state in which the lock ring 8 is moved to the lowest position.
- 13D is a cross-sectional view taken along the line including the line 13D-13D in FIG. 13C.
- FIG. 13E is a cross-sectional view taken along the line including the line 13E-13E in FIG. 13B.
- the male luer 10 passes through the slit 211 (see FIGS. 10A and 10B) of the septum 210, and the septum 210 is deformed toward the lumen 225 of the base 221.
- the opening of the lateral hole 12 of the male luer 10 is exposed in the lumen 225 of the base 221. Therefore, the flow path 11 of the male luer 10 and the lumen 225 of the base 221 communicate with each other.
- the liquid can flow from the tube 190 to the flow path 111 of the lure body 110, the flow path 11 of the male luer 10, the lumen 225 of the pedestal 221, the male luer 227, or vice versa.
- the shield 6 receives a compressive force in the vertical direction, and in particular, the outer peripheral wall 65 is deformed so that its vertical dimension is reduced.
- the rib 83 of the lock ring 8 and the rib 123 of the lock nut 120 are engaged with each other. Further, as described above, the operation portion 35 and the rib 36 of the connector main body 3 are engaged with the notch 86 and the groove 87 of the lock ring 8 (see FIG. 5B). Therefore, the lock nut 120 cannot be rotated with respect to the connector body 3. Thus, when the lock ring 8 is moved to the lowest position, it functions as a “rotation prevention mechanism” that prevents the lock nut 120 from rotating.
- the lock ring 8 serves as both a “rotation prevention mechanism” for preventing the lock nut 120 from rotating and a “lever rotation prevention mechanism” for preventing the lever 30 from rotating. Thereby, the number of members constituting the male connector assembly 1 can be reduced, and the configuration of the male connector assembly 1 can be simplified.
- the stop protrusion 38 abuts against the bridging portion 88 of the lock ring 8. Accordingly, the stop protrusion 38 prevents the lock ring 8 from dropping downward from between the operation portions 35.
- the locking projection 37 (see FIG. 5B) is in contact with the upper end of the bridging portion 88. For this reason, the lock ring 8 does not move unintentionally from the lowest position due to vibration or external force. That is, the locking protrusion 37 constitutes a “second movement prevention mechanism” that prevents the lock ring 8 at the lowest position from being unintentionally raised. Since the lock ring 8 is held at the lowest position, the possibility that the activated state of the rotation prevention mechanism and the lever rotation prevention mechanism is released unintentionally is reduced.
- Separation of the male connector assembly 1 and the female connector 200 can be roughly performed in a procedure reverse to the above.
- the lock nut 120 may be rotated to loosen the threaded engagement between the female screw 128 and the male screw 18, and then the male connector 2 and the screw lock connector 100 may be separated.
- the lever 30 provided with the locking claw 32 functions as a “lever lock mechanism” for maintaining (locking) the connection state with the female connector 200.
- the lever 30 rotates when the female connector 200 enters the hood 20. Thereafter, when the female connector 200 is inserted into the hood 20 to a predetermined depth, the lever 30 returns to the initial position, and the locking claw 32 engages with the female connector 200.
- the engagement of the locking claw 32 with the female connector 200 is due to the change in the radial position of the lever 30 (particularly the locking portion 31), and further, the locking claw 32 is engaged with the female connector 200.
- it can be easily confirmed by a “click” sound generated when the lever 30 returns to the initial position. Since the edge of the opening 21 of the hood 20 positions the female connector 200 in the horizontal direction, a stable engagement operation is always performed. The operator does not need to touch the lever 30 in order to engage the locking claw 32 with the female connector 200.
- the engagement between the locking claw 32 and the female connector 200 may be released by pressing the outer surface of the operation unit 35 and slightly rotating the lever 30.
- the male connector assembly 1 of the present embodiment provided with the lever lock mechanism is excellent in workability of connection and separation with respect to the female connector 200.
- the horizontal dimension of the connector body 3 is the maximum in the direction in which the male luer 10 and the lever 30 face each other. More specifically, the outline of the connector main body 3 (or the projected shape of the connector main body 3) viewed from above is a substantially elliptical shape having a long axis 15a in the direction in which the male luer 10 and the lever 30 face each other (see FIG. 2E).
- the lock ring 8 also does not protrude from the outline of the connector body 3.
- the distal end portion of the female connector 200 that is, the cap 230 is housed in the hood 20.
- the male connector assembly 1 when the male connector assembly 1 is placed under the patient with the central axis 3a in the horizontal direction, the male connector assembly 1 easily rotates so that the direction of the long axis 15a is in the horizontal direction.
- the possibility that the patient's weight acts on the male connector assembly 1 along the long axis direction 15a is low.
- the possibility that the patient's weight acts on the operation unit 35 is low. Therefore, the possibility that the locking claw 32 of the lever 30 is engaged with the female connector 200 (locked state) is unintentionally released is lower than that of a male connector provided with a conventional lever lock mechanism.
- the operation part 35 of the lever 30 is retracted from the lever base part 39 toward the central axis 3a. Therefore, when the male connector assembly 1 is an underlay of the patient, the possibility that the patient's weight is applied to the operation portion 35 of the lever 30 along the long axis direction 15a is even lower.
- the external force applied to the male connector assembly 1 when the male connector assembly 1 collides with surrounding members or when the male connector assembly 1 is laid on the patient's body is a lever that protrudes to the outermost side.
- the possibility of being applied to the base 39 is high. It is unlikely that the external force is applied to the operation unit 35 that is retracted to the central axis 3a side from the lever base 39.
- the lever base 39 protrudes outward in the radial direction, and the operation part 35 is located closer to the central axis 3a than the lever base 39, so that the locking claw 32 of the lever 30 is connected to the female connector 200.
- the possibility that the engaged state (locked state) is released unintentionally is further reduced.
- the lock ring 8 is disposed so as to contact the inner surface of the operation unit 35. For this reason, the lock ring 8 which does not protrude from the substantially elliptical outline of the connector main body 3 when viewed from above can be easily realized.
- This is advantageous for rotating the male connector assembly 1 so that the direction of the long axis 15a is in the horizontal direction when the male connector assembly 1 is a patient's underlay. Further, when the male connector assembly 1 is placed under the patient, it is advantageous for reducing the pain felt by the lock ring 8 by the patient. Further, it is advantageous for simplifying the structure of the lever rotation preventing mechanism for preventing the rotation of the lever 30 and improving the reliability of the operation.
- the tip 20a of the hood 20 has a circular shape coaxial with the central axis 3a.
- the outer diameter of the hood 20 at the distal end 20a of the hood 20 is substantially the same as the diameter (short diameter) of the connector body 3 in the direction of the minor axis 15b of the substantially elliptical outline.
- the outer dimension of the hood 20 at the tip 20a is set to the minimum necessary and necessary for housing the female connector 200 and positioning the female connector 200 in the horizontal direction.
- the male connector assembly 1 (especially connector main body 3) can be reduced in size. This is advantageous in reducing the pain felt by the male connector assembly 1 when the male connector assembly 1 is placed under the patient.
- the portion of the male connector assembly 1 that protrudes most in the radial direction from the central axis 3a is the lever base 39 (see FIG. 13B).
- the male connector assembly 1 At the position of the lever base 39 (or base 15), the male connector assembly 1 has the largest horizontal dimension.
- the locking portion 31 of the lever 30 is inclined so as to approach the central axis 3a as the distance from the lever base 39 increases. Thereby, a smooth curved surface in which the outer surface of the locking portion 31 and the outer surface of the hood 20 are continuous can be formed in the male connector assembly 1 (particularly the connector main body 3). This is advantageous for improving the design value of the male connector assembly 1.
- the male connector assembly 1 becomes an underlay of a patient, it is advantageous for reducing the pain felt by the male connector assembly 1 by the patient.
- the shield 6 is attached to the male lure 10.
- the shield 6 closes the opening of the lateral hole 12 provided in the male luer 10 and communicating with the flow path 11.
- the shield 6 prevents the liquid from leaking even when the above-described various mechanisms that prevent the connection between the male connector assembly 1 and the female connector 200 from being unintentionally released are not functioning. It functions as a further safety mechanism (fail-safe mechanism).
- the external shape of the male connector assembly 1 (particularly the connector body 3) is not limited to the above embodiment.
- FIG. 14 is a plan view of a connector main body 3 ′ having a substantially rhombus outline
- FIG. 15 is a connector main body 3 ′′ having a shape that approximates the track shape of an athletic stadium (hereinafter referred to as “substantially track shape”).
- members corresponding to those shown in Fig. 2E are denoted by the same reference numerals as in Fig. 2E, like the connector main body 3 shown in Fig. 2E.
- the contour of the main body 3 ′, 3 ′′ is defined by the contour of the base 15.
- the outline of the connector main body 3 ′ in FIG. 14 is not an exact rhombus because the four corners of the rhombus located on the long axis 15 a and the short axis 15 b are rounded and chamfered.
- the outline of the connector main body 3 ′′ in FIG. 15 is composed of two semicircles having the same radius facing each other in the direction of the long axis 15a and two straight lines parallel to the long axis 15a connecting the two semicircles.
- the radius of the two semicircles and the length of the two straight lines can be arbitrarily set. Therefore, the outline of the connector body 3 ′′ in FIG. It may be a shape that is not.
- the outline is “substantially oval” means that the axis is orthogonal to the central axis 3a and has the largest outer dimension (the axis along the direction in which the male luer 10 and the lever 30 face each other). Is the long axis 15a, the horizontal dimension along the long axis 15a is larger than the horizontal dimension along the direction perpendicular to the long axis 15a (not including the same case).
- the “substantially oval” of the present invention is symmetric with respect to the major axis 15a.
- the “substantially oval” of the present invention includes an approximately rhombus (see FIG. 14) and an approximately track shape (see FIG. 15) in addition to an exact ellipse (excluding a circle).
- the above-described contour of the connector body 3 can be said to be an accurate ellipse.
- a connector main body 3 ′ (see FIG. 14) having a substantially rhomboid shape, a connector main body 3 ′′ having a substantially track shape (see FIG. 15), and a connector main body having a substantially elliptical outline other than these are used.
- the male connector and the male connector assembly of the present invention can be configured in the same manner as in the above-described embodiment, and the male connector and the male connector assembly are placed under the patient with the central axis 3a in the horizontal direction.
- the long axis 15a can be easily rotated so that the direction of the long axis 15a is in the horizontal direction, so that the locking claw 32 of the lever 30 is engaged with the female connector 200.
- the above-described effect of the present invention is that the possibility that the combined state (locked state) is unintentionally released is low.
- the lock ring 8 (lever rotation prevention mechanism) when viewed along the central axis 3a. As the rotation prevention mechanism) does not protrude outside from the contour of the connector body, the plan view shape of the locking ring 8 in accordance with the contour of the connector body are preferably suitably changed.
- the shape of the portion above the base 15 of the connector main body 3 as viewed along the short axis 15b is a tapered shape in which the horizontal dimension decreases as the distance from the base 15 increases (FIG. 2C).
- the shape is not limited to this, and may be a rectangle having a constant horizontal dimension, for example.
- the locking portion 31 of the lever 30 extends in parallel with the central axis 3a.
- the shape of the portion above the base 15 of the connector main body 3 viewed along the long axis 15a is a substantially rectangular shape having a constant horizontal dimension (see FIGS. 2D and 13C). It is not limited to this, for example, the taper shape in which a horizontal dimension becomes small as it leaves
- the outer surface of the operation portion 35 of the lever 30 is located closer to the central axis 3a than the outer surface of the lever base 39 (see FIGS. 2C and 13B). It is not limited to.
- the operation unit 35 may have the same horizontal position as the lever base 39, or may protrude from the lever base 39 outward in the horizontal direction. As the horizontal position of the operation portion 35 is farther from the central axis 3a, the possibility that an unintended external force acts on the operation portion 35 and the engagement claw 32 is engaged with the female connector 200 (locked state) may be released. Get higher.
- the possibility that the locked state is unintentionally released is that the rigidity of the base 15 that supports the lever 30 is increased, and the outline of the connector body 3 when viewed along the central axis 3a is substantially elliptical. It can be reduced by increasing the flatness, moving the lock ring 8 to the lowest position, or the like.
- the lever 30 and the hood 20 are provided on the substantially elliptical base 15, but the present invention is not limited to this.
- the base 15 is divided into four parts, and the two parts along the long axis 15a are divided into two parts.
- the lever 30 may be supported, and the hood 20 may be supported by two portions along the short axis 15b.
- Four notches or four slits can be advantageous to facilitate the rotation of the lever 30 while firmly connecting the hood 20 to the male luer 10.
- FIGS. 16A to 16C An embodiment of this configuration is shown in FIGS. 16A to 16C.
- 16A to 16C members corresponding to those shown in FIGS. 2A to 2G are denoted by the same reference numerals as in FIGS. 2A to 2G.
- the base 15 of the connector body 3 ′ ′′ is provided with four notches 15n.
- the notch 15n is provided in a region other than the portion (the portion on the long shaft 15a and the short shaft 15b) where the lever 30 and the hood 20 are provided on the outer edge of the base 15.
- the base 15 When viewed from above along the central axis 3a (plan view), the base 15 has a substantially cross shape.
- the outer dimension of the connector body 3 ′ ′′ is the largest in the direction in which the male luer 10 and the lever 30 face each other (the direction of the long axis 15a), and in the direction orthogonal to the direction (the direction of the short axis 15b). Is the least.
- the outline of the connector main body 3 ′ ′′ when viewed in plan is recessed at the notch 15n.
- the outline of the connector body 3 ′ ′′ excluding the notch 15n is along an ellipse 19 indicated by a two-dot chain line.
- the lever lock male connector 2 ′ of the present invention can be configured by mounting the shield 6 (see FIGS. 3A to 3C) and the lock ring 8 (see FIGS. 4A and 4B) on the connector body 3 ′ ′′.
- FIG. 17A is a perspective view of the male connector 2 ′
- FIG. 17B is a plan view thereof.
- the outer surface of the arched portion 85 of the lock ring 8 is along an ellipse (see FIG. 4B).
- the ellipse along which the arched portion 85 is aligned corresponds to the ellipse 19 shown in FIG. 16C. For this reason, as shown in FIG.
- the outline of the male connector 2 ′ when viewed from above along the central axis 3a (in plan view), the outline of the male connector 2 ′ is an ellipse having a long axis 15a and a short axis 15b. .
- the elliptical contour is constituted by the connector body 3 ′ ′′ and the lock ring 8.
- the outer surface of the lock ring 8 complements the notch 15n, so that the contour when viewed in plan view is obtained.
- a male connector 2 ′ having an oval shape can be realized.
- the male connector 2 ′ and the male connector assembly using the male connector 2 ′ are long when the center axis 3a is horizontal and the patient is laid down. It easily rotates so that the direction of the shaft 15a is oriented in the horizontal direction. Therefore, the possibility that the locking claw 32 of the lever 30 is engaged with the female connector 200 (locked state) is unintentionally released is lower than that of a male connector provided with a conventional lever lock mechanism.
- a male connector having a substantially rhombus outline when viewed in plan can be realized by attaching a lock ring that can complement the notch 15n to the connector body 3 '.
- a lock ring that can complement the notch 15n to the connector body 3 '. The same applies when the notch 15n is provided in the base 15 of the connector main body 3 "in FIG.
- each of the connector main body and the lock ring does not need to have a substantially elliptical contour shape.
- a notch 15n can be provided in the base 15 of the connector body 3 ′ ′′ (see FIGS. 16A to 16C), or a notch 86 can be provided in the lock ring (see FIGS. 4A and 4B). Therefore, the degree of freedom in designing the connector body and the lock ring is improved.
- the base 15 of the connector body 3 ′ ′′ is not a flat plate in a strict sense.
- the base 15 has a stepped shape (or an inclined shape) such that a portion near the lever 30 is positioned above a portion near the male luer 10.
- This staircase shape (or inclined shape) increases the creeping distance of the base 15 from the male luer 10 to the lever 30 without changing the outer dimension of the connector body in the direction of the long axis 15a. This is advantageous in facilitating the rotation of the lever 30 because the elastically deformable region of the base 15 is enlarged.
- the hood 20 is provided on the base 15 that connects the base end portion 13 of the male luer 10 and the lever 30.
- the connection method of the hood 20 and the base end part 13 is not limited to this.
- the hood 20 may be connected to the male luer 10 via a member different from the base 15 that holds the lever 30. This configuration may also facilitate the rotation of the lever 30 while firmly connecting the hood 20 to the male luer 10.
- the number of levers 30 is not limited to two.
- the male connector 2 having only one lever 30 can be configured. If the number of the locking claws 32 is two or more, it is necessary to simultaneously engage and release all these locking claws 32 with respect to the female connector 200. Therefore, the male connector 2 and the female There is a possibility that workability of connection and separation with the connector 200 may be complicated. When the number of levers 30 is only one, connection and separation workability may be improved.
- the locking claw 32 is engaged with the annular protrusion 223 of the female connector 200, but the portion of the female connector 200 that is engaged with the locking claw 32 is appropriately changed according to the configuration of the female connector 200. It's okay. Depending on the portion engaged with the female connector 200, the shape and position of the locking claw 32 can be changed.
- the shape of the male lure 10 can be arbitrarily changed.
- the number of the lateral holes 12 communicating with the flow path 11 is not necessarily two, and may be one or three or more.
- the horizontal hole 12 may be omitted, and the flow path 11 may be open at the tip 10 a of the male luer 10.
- the female connector may be a rubber stopper that seals the opening of the vial.
- a through hole such as the slit 211 of the septum 210 is not formed in advance in the rubber stopper. Therefore, in this case, the male luer can be provided with a sharp tip so that the rubber stopper can be punctured.
- a liquid channel and a gas channel independent of each other may be formed in the male luer. .
- the lever (particularly the locking claw 32) is appropriately changed so that it can be engaged with the opening of the vial.
- the configuration of the shield 6 can be arbitrarily changed.
- the outer peripheral wall 65 may have a bellows shape in which two tapered portions having opposite taper directions are alternately connected.
- a slit similar to the slit 211 of the septum 210 is provided on the upper surface of the head 61 so that the opening facing upward of the through hole 62 may be liquid-tightly closed when the male connector assembly 1 is not connected to the female connector.
- the method of fixing the shield 6 to the base 15 is not limited to the method of locking the fixing claw 69a to the base 15, and any method such as adhesion, welding, fitting, or the like can be used.
- the shield 6 may be omitted.
- the configuration of the lock ring 8 can be arbitrarily changed.
- the structure for preventing the lock nut 120 from rotating is not limited to the rib 83 provided on the inner peripheral surface 82.
- regular polygonal column surfaces for example, regular octagonal column surfaces
- a shape that fits (including engagement) with each other may be provided.
- the rotation prevention mechanism that prevents the lock nut 120 from rotating may be omitted.
- one or both of the rib 83 provided on the inner peripheral surface 82 of the lock ring 8 and the rib 123 provided on the outer peripheral surface of the lock nut 120 may be omitted.
- the rotation prevention mechanism is provided, the movement of the lock nut 120 from the uppermost position (see FIG. 12) to the lowermost position (see FIG. 13B) depends on the position of the lock nut 120 in the rotational direction. The situation that it becomes difficult by collision with 123 may occur.
- a configuration in which the rotation prevention mechanism is omitted is advantageous in avoiding such a situation.
- the lock ring 8 at the uppermost position unintentionally moves downward by utilizing the frictional force between the pressure contact rib 35b of the operation portion 35 and the sliding rib 85a of the lock ring 8.
- the locking ring 37 protruding from the inner surface of the operation portion 35 is engaged with the lock ring 8 so that the lock ring 8 at the lowest position moves unintentionally upward.
- the mechanism for preventing the movement of the lock ring 8 (movement prevention mechanism) is not limited to this. A mechanism for preventing the movement of the lock ring 8 by frictional force may be applied to the lock ring 8 at the lowest position.
- the operation portion 35 may be provided with any convex portion or concave portion that fits or engages with the lock ring 8. Or you may abbreviate
- the lock ring 8 may be omitted.
- the tube 190 may be directly connected to the cylindrical portion 17 of the male connector 2.
- the tube 190 can be inserted into the cylindrical portion 17 and fixed by adhesion or the like.
- the screw lock type connector 100 is unnecessary.
- the lock ring 8 does not need to function as a rotation prevention mechanism for preventing the lock nut 120 from rotating, the rib 83 can be omitted.
- the field of application of the present invention is not limited, but in the medical field, it can be widely used as a connector for forming a circuit (line) for transporting various liquids such as medicinal liquids, infusions and blood. . Furthermore, it can also be used in various fields that handle liquids such as foods other than those for medical use.
- Male connector assembly 2 2 ′ Lever lock type male connector 3, 3 ′, 3 ′′, 3 ′ ′′ Connector body 3 a Central shaft 6 Shield 8 Lock ring (lever rotation prevention mechanism, rotation prevention mechanism) 10 male luer 11 male luer flow path 13 male luer base end 15 base 15a long shaft 15b short shaft 17 cylindrical portion 17a female taper surface 18 male screw 20 hood 20a hood tip 23 notch 30 lever 31 locking portion 32 locking claw 35 Operation part 35b Pressure welding rib (1st movement prevention mechanism) 37 Locking projection (second movement prevention mechanism) 39 Lever base 81 Lock ring opening 100 Screw lock connector 110 Luer body 112a Male taper surface 120 Lock nut 128 Female screw 200 Female connector
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Abstract
Description
1.1.コネクタ本体
オスコネクタ2を構成するコネクタ本体3を説明する。図2Aはコネクタ本体3の上方から見た斜視図、図2Bはコネクタ本体3の下方から見た斜視図である。図2C、図2D、図2Eは、順にコネクタ本体3の正面図、側面図、平面図である。図2Fは、図2Dの2F-2F線を含む上下方向面で切断されたコネクタ本体3の断面図である。図2Gは、図2Cの2G-2G線を含む上下方向面で切断されたコネクタ本体3の断面図である。図2F及び図2Gにおいて、一点鎖線3aは、コネクタ本体3の中心軸である。中心軸3aは、オスコネクタ組立体1を構成する全ての部材(図1参照)の中心軸でもある。
オスコネクタ2を構成するシールド6を説明する。図3Aはシールド6の上方から見た斜視図、図3Bはシールド6の下方から見た斜視図、図3Cはシールドの断面図である。シールド6は、上から下に、頭部61、外周壁65、基部68をこの順に備える。図3Cに示されているように、シールド6は、上下方向に貫通した略筒形状を有している。
オスコネクタ2を構成するロックリング8を説明する。図4Aはロックリング8の上方から見た斜視図、図4Bはロックリング8の平面図である。
図1に示したように、シールド6は、コネクタ本体3の上方から、フード20内に挿入される。また、ロックリング8は、コネクタ本体3の下方から、一対の操作部35間に挿入される。図5Aは、コネクタ本体3にシールド6及びロックリング8が装着されたオスコネクタ2の上方から見た斜視図、図5Bは、オスコネクタ2の下方から見た斜視図である。図5Cは、中心軸3a及び長軸15aを含む面に沿ったオスコネクタ2の断面図、図5Dは、中心軸3a及び短軸15bを含む面に沿ったオスコネクタ2の断面図である。オスコネクタ2の平面図は、シールド6が設けられている点を除いて図2Eと同じであるので省略する。
2.1.ルアー本体
ネジロック型コネクタ100を構成するルアー本体110を説明する。図6Aはルアー本体110の斜視図、図6Bはルアー本体110の断面図である。
ネジロック型コネクタ100を構成するロックナット120を説明する。図7Aはロックナット120の上方から見た斜視図、図7Bはロックナット120の下方から見た斜視図、図7Cはロックナット120の平面図、図7Dはロックナット120の断面図である。ロックナット120は、全体として中空の略円筒形状を有する。
図1に示したように、柔軟性を有するチューブ190をロックナット120に貫通させる。そして、チューブ190の上端に、ルアー本体110の接続部119を挿入する。続いて、ロックナット120を上昇させる。ロックナット120の雌ネジ128内にルアー本体110を挿入する。ルアー本体110の外周面から突出した凸部116が、ロックナット120の内周面から突出した位置規制突起127に衝突するかも知れない。この場合には、ロックナット120をルアー本体110に対してわずかに回転させる。ルアー本体110の凸部116の周方向の位置とロックナット120の案内路126の周方向の位置とが一致すると、凸部116は案内路126を通過することができる。かくして、図8A及び図8Bに示すようにネジロック型コネクタ100を組み立てることができる。
オスコネクタ2(図5A~図5D)とネジロック型コネクタ100(図8A、図8B)との接続は、ルアー本体110のオスルアー112をコネクタ本体3の筒状部17に挿入し、ロックナット120の雌ネジ128を筒状部17の雄ネジ18に螺合させることにより可能である。
4.1.メスコネクタ
オスコネクタ組立体1は、メスコネクタに接続して使用される。メスコネクタの一例を図10A、図10Bに示す。図10Aはメスコネクタ200の斜視図であり、図10Bはメスコネクタ200の断面図である。
オスコネクタ組立体1とメスコネクタ200との接続は以下のようにして行うことができる。
本実施形態のオスコネクタ組立体1では、係止爪32を備えたレバー30が、メスコネクタ200との接続状態を維持(ロック)するための「レバーロック機構」として機能する。オスコネクタ組立体1をメスコネクタ200に接続するためには、メスコネクタ200をフード20の開口21に挿入し、更にメスコネクタ200をオスコネクタ組立体1に向かって押し込むだけでよい。係止爪32に傾斜面32aが設けられているので、メスコネクタ200をフード20内に進入させるとレバー30が回動する。その後、メスコネクタ200をフード20内に所定の深さまで挿入すると、レバー30は初期位置に復帰して、係止爪32がメスコネクタ200に係合する。係止爪32がメスコネクタ200に係合したこと(ロック状態)は、レバー30(特に係止部31)の半径方向の位置の変化により、更には、係止爪32がメスコネクタ200に係合してレバー30が初期位置に復帰する時に発せられる「カチッ」という音により、容易に確認することができる。フード20の開口21の端縁はメスコネクタ200を水平方向に位置決めするので、常に安定した係合動作が行われる。作業者は、係止爪32をメスコネクタ200に係合させるために、レバー30に触れる必要がない。
上記の実施形態は例示にすぎない。本発明は、上記の実施形態に限定されず、適宜変更することができる。
2,2’ レバーロック型オスコネクタ
3,3’,3”,3''' コネクタ本体
3a 中心軸
6 シールド
8 ロックリング(レバー回動防止機構、回転防止機構)
10 オスルアー
11 オスルアーの流路
13 オスルアーの基端部
15 ベース
15a 長軸
15b 短軸
17 筒状部
17a メステーパ面
18 雄ネジ
20 フード
20a フードの先端
23 切り欠き
30 レバー
31 係止部
32 係止爪
35 操作部
35b 圧接リブ(第1移動防止機構)
37 係止突起(第2移動防止機構)
39 レバー基部
81 ロックリングの開口
100 ネジロック型コネクタ
110 ルアー本体
112a オステーパ面
120 ロックナット
128 雌ネジ
200 メスコネクタ
Claims (19)
- 棒状のオスルアーと、前記オスルアーを取り囲む筒状のフードと、前記オスルアーの基端部にベースを介して接続されたレバーとを備えたコネクタ本体を有するレバーロック型オスコネクタであって、
前記オスルアーは前記コネクタ本体の中心軸と同軸に配置され、
前記レバーは、前記ベースに対して前記オスルアーと同じ側に配された係止部と、前記ベースに対して前記オスルアーとは反対側に配された操作部と、前記係止部の前記オスルアーに対向する側の面から前記オスルアーに向かって突出した係止爪とを備え、
前記係止部は、前記フードに形成された切り欠き内に配されており、
前記操作部の外側面を押すと前記係止爪が前記オスルアーから離れるように、前記レバーは弾性的に回動可能であり、
前記コネクタ本体を前記中心軸に沿って見たとき、前記コネクタ本体は、前記オスルアーと前記レバーとが対向する方向に長軸を有することを特徴とするレバーロック型オスコネクタ。 - 前記中心軸に沿って見たときの前記コネクタ本体の輪郭は略楕円形である請求項1に記載のレバーロック型オスコネクタ。
- 前記係止爪が前記オスルアーから離れるように前記レバーが回動するのを防止するレバー回動防止機構を更に備える請求項1又は2に記載のレバーロック型オスコネクタ。
- 前記オスコネクタを前記中心軸に沿って見たとき、前記レバー回動防止機構は、前記コネクタ本体より外にはみ出さない請求項3に記載のレバーロック型オスコネクタ。
- 棒状のオスルアーと、前記オスルアーを取り囲む筒状のフードと、前記オスルアーの基端部にベースを介して接続されたレバーとを備えたコネクタ本体、及び、レバー回動防止機構を有するレバーロック型オスコネクタであって、
前記オスルアーは前記コネクタ本体の中心軸と同軸に配置され、
前記レバーは、前記ベースに対して前記オスルアーと同じ側に配された係止部と、前記ベースに対して前記オスルアーとは反対側に配された操作部と、前記係止部の前記オスルアーに対向する側の面から前記オスルアーに向かって突出した係止爪とを備え、
前記係止部は、前記フードに形成された切り欠き内に配されており、
前記操作部の外側面を押すと前記係止爪が前記オスルアーから離れるように、前記レバーは弾性的に回動可能であり、
前記レバー回動防止機構は、前記係止爪が前記オスルアーから離れるように前記レバーが回動するのを防止するものであり、
前記オスコネクタを前記中心軸に沿って見たとき、前記オスコネクタは、前記オスルアーと前記レバーとが対向する方向に長軸を有することを特徴とするレバーロック型オスコネクタ。 - 前記中心軸に沿って見たときの前記オスコネクタの輪郭は略楕円形である請求項5に記載のレバーロック型オスコネクタ。
- 前記略楕円形の輪郭は、前記コネクタ本体と前記レバー回動防止機構とによって構成される請求項6に記載のレバーロック型オスコネクタ。
- 前記レバー回動防止機構は、前記操作部の内側面に当接するように配置されている請求項3~7のいずれか一項に記載のレバーロック型オスコネクタ。
- 前記レバー回動防止機構を、前記レバーを回動させることができる第1位置と、前記レバーを回動させることができない第2位置とに変位させることができる請求項3~8のいずれか一項に記載のレバーロック型オスコネクタ。
- 前記第1位置にある前記レバー回動防止機構が前記第2位置に向かって移動するのを防止する第1移動防止機構、または、前記第2位置にある前記レバー回動防止機構が前記第1位置に向かって移動するのを防止する第2移動防止機構を備える請求項9に記載のレバーロック型オスコネクタ。
- 前記フードの先端は前記中心軸と同軸の円形であり、
前記フードの前記先端での外径は、前記略楕円形の短軸に沿った短径と同じかこれより小さい請求項2又は6に記載のレバーロック型オスコネクタ。 - 前記レバーの前記操作部は、前記レバーの前記ベースに接続された部分より、前記中心軸に近い側に位置している請求項1~11のいずれか一項に記載のレバーロック型オスコネクタ。
- 前記オスコネクタのうち、前記中心軸から半径方向に最も突出した部分は、前記レバーの前記ベースに接続された部分である請求項1~12のいずれか一項に記載のレバーロック型オスコネクタ。
- 前記オスルアー内に液体が流れる流路が設けられており、
前記流路に連通した開口が、前記オスルアーの外周面に設けられており
前記オスコネクタは、前記開口を塞ぐシールドを更に備え、
前記オスルアーがメスコネクタに挿入されたとき、前記シールドは前記オスルアーの長手方向に圧縮変形し、前記開口が露出する請求項1~13のいずれか一項に記載のレバーロック型オスコネクタ。 - 前記レバーを2つ備え、
2つのレバーは、前記中心軸に対して対称位置に配されている請求項1~14のいずれか一項に記載のレバーロック型オスコネクタ。 - 請求項1~15のいずれか一項に記載のレバーロック型オスコネクタとネジロック型コネクタとを備えたオスコネクタ組立体であって、
前記コネクタ本体は、前記ベースに対して前記オスルアーとは反対側に、前記オスルアーと連通した筒状部を更に備え、
前記筒状部の内周面には先端に近づくにしたがって内径が大きくなるメステーパ面が形成されており、
前記筒状部の外周面には、雄ネジが形成されており、
前記ネジロック型コネクタは、前記筒状部の前記メステーパ面と嵌合するオステーパ面が設けられたルアー本体と、前記ルアー本体の周りに回転可能なロックナットとを備え、
前記ロックナットには、前記筒状部の前記雄ネジと螺合する雌ネジが設けられているオスコネクタ組立体。 - 前記ルアー本体の前記オステーパ面を前記筒状部の前記メステーパ面に嵌合させ且つ前記ロックナットの前記雌ネジを前記筒状部の前記雄ネジに螺合させた状態において前記ロックナットの回転を防止する回転防止機構を更に備える請求項16に記載のオスコネクタ組立体。
- 前記回転防止機構は、前記係止爪が前記オスルアーから離れるように前記レバーが回動するのを防止するレバー回動防止機構としても機能する請求項17に記載のオスコネクタ組立体。
- 前記回転防止機構は中央に開口が形成された環状形状を有し、
前記筒状部又は前記ルアー本体が、前記回転防止機構の前記開口内に配される請求項17又は18に記載のオスコネクタ組立体。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP16752525.2A EP3260161B1 (en) | 2015-02-18 | 2016-02-17 | Lever lock male connector and male connector assembly |
| JP2017500724A JP6839390B2 (ja) | 2015-02-18 | 2016-02-17 | レバーロック型オスコネクタ及びオスコネクタ組立体 |
| CA2977030A CA2977030C (en) | 2015-02-18 | 2016-02-17 | MALE LEVER LOCKING FITTING AND MALE FITTING ASSEMBLY |
| US15/551,837 US10556099B2 (en) | 2015-02-18 | 2016-02-17 | Lever lock male connector and male connector assembly |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-030007 | 2015-02-18 | ||
| JP2015030007 | 2015-02-18 |
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| WO2016133139A1 true WO2016133139A1 (ja) | 2016-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2016/054618 Ceased WO2016133139A1 (ja) | 2015-02-18 | 2016-02-17 | レバーロック型オスコネクタ及びオスコネクタ組立体 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10556099B2 (ja) |
| EP (1) | EP3260161B1 (ja) |
| JP (1) | JP6839390B2 (ja) |
| CA (1) | CA2977030C (ja) |
| WO (1) | WO2016133139A1 (ja) |
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| JP2018198744A (ja) * | 2017-05-26 | 2018-12-20 | 株式会社ジェイ・エム・エス | オスコネクタ |
| WO2019096864A1 (en) * | 2017-11-14 | 2019-05-23 | Conceptomed As | Fluid transfer devices |
| WO2019203014A1 (ja) | 2018-04-17 | 2019-10-24 | 株式会社ジェイ・エム・エス | 輸液セットのプライミング方法及び輸液セット |
| WO2021131860A1 (ja) | 2019-12-27 | 2021-07-01 | 株式会社ジェイ・エム・エス | 接続具 |
| WO2022163311A1 (ja) | 2021-02-01 | 2022-08-04 | 株式会社ジェイ・エム・エス | 医療用コネクタ |
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| JP2024153604A (ja) * | 2023-04-17 | 2024-10-29 | エスティーエス バイオ カンパニー,リミテッド | 閉鎖薬物送達型マイクロカテーテル |
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| JP2018198744A (ja) * | 2017-05-26 | 2018-12-20 | 株式会社ジェイ・エム・エス | オスコネクタ |
| WO2019096864A1 (en) * | 2017-11-14 | 2019-05-23 | Conceptomed As | Fluid transfer devices |
| WO2019203014A1 (ja) | 2018-04-17 | 2019-10-24 | 株式会社ジェイ・エム・エス | 輸液セットのプライミング方法及び輸液セット |
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Also Published As
| Publication number | Publication date |
|---|---|
| CA2977030C (en) | 2024-10-29 |
| EP3260161B1 (en) | 2021-05-12 |
| JPWO2016133139A1 (ja) | 2017-11-24 |
| US10556099B2 (en) | 2020-02-11 |
| US20180064923A1 (en) | 2018-03-08 |
| JP6839390B2 (ja) | 2021-03-10 |
| EP3260161A4 (en) | 2018-10-24 |
| CA2977030A1 (en) | 2016-08-25 |
| EP3260161A1 (en) | 2017-12-27 |
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