JP5209400B2 - Connector lock cover - Google Patents

Description

  The present invention relates to a connector lock cover attached to a connector provided at the tip of a medical tube.

  A medical tube is used when a medical solution or the like is introduced into a patient at a medical site. Also. When connecting these medical tubes, a female connector is attached to one medical tube, a male connector is attached to the other medical tube, and the male connector is screwed to the female connector. By combining them, it is possible to connect the medical tubes to each other. FIG. 13 and FIG. 14 show an outline of a medical tube.

  In FIG. 13, a female connector 100 is provided at the tip of the first medical tube 101, and a male connector 200 is provided at the tip of the second medical tube 201. The female connector 100 includes a coupling body portion 104 that is fixedly connected to the distal end of the first medical tube 101, and a rotor portion 102 that forms a body convex portion region that is rotatably provided with respect to the coupling body portion 104. The operation rotor portion 103 is provided integrally with the rotor portion 102 and has a smaller diameter than the rotor portion 102.

  On the outer surface of the operation rotor portion 103, a plurality of streak-shaped convex region 105 provided so as to extend in the axial direction is provided. A female-side passage 120 that does not rotate with the coupling body portion 104 and is connected to the first medical tube 101 is provided inside the operation rotor portion 103. Further, a female screw (not shown) is formed on the inner peripheral surface of the operation rotor portion 103 to which a flange portion 205 described later is screwed.

  The male connector 200 includes a coupling body portion 202 fixedly connected to the distal end of the second medical tube 201, and a male side provided with a small diameter with respect to the coupling body portion 202 and connected to the second medical tube 201. A passage 204 is provided. A flange portion 205 that is screwed into a female screw formed on the inner peripheral surface of the operation rotor portion 103 is provided at the distal end portion of the male side passage 204. In addition, a plurality of streaky convex regions 203 provided so as to extend in the axial direction are provided on the outer surface of the coupling body portion 202.

FIG. 14 is a diagram showing a state in which the female connector 100 and the male connector 200 are coupled. The flange portion 205 of the second medical tube 201 is inscribed in the operation rotor portion 103 of the first medical tube 101, and the operation rotor portion 103 is rotated, so that the first medical tube 101 and the second medical tube 201 are rotated. The female connector 100 and the male connector 200 can be coupled to each other without rotating them. The following patent document 1 is mentioned as what discloses the connection structure of such a connector.
Japanese translation of PCT publication No. 2002-501793

  According to the connector connection structure described above, the female connector 100 and the male connector 200 can be coupled without rotating the first medical tube 101 and the second medical tube 201, respectively. However, in a state where the medical tube is connected to the patient, it is considered that a twisting force is applied to each of the first medical tube 101 and the second medical tube 201 as the patient moves.

  In such a case, the first medical tube 101 is provided so as to be rotatable with respect to the operation rotor portion 103, and thus no twisting force is accumulated. However, since the second medical tube 201 is fixedly connected to the coupling body 202, when the twisting force of the second medical tube 201 is applied, the male side passage 204 is rotated to rotate the female tube 204. There is a possibility that the connection between the mold connector 100 and the male connector 200 is disconnected.

  The possibility of disconnection of such a connector is not limited to the connection of the connector having one rotor as described above, and the probability of occurrence of further disconnection in the connection of a connector having no rotor part in any connector. Becomes higher.

  Therefore, this invention is made in order to solve the said subject, and even if it is a case where the force of twist is added to a medical tube, it prevents that a connection with a female connector and a male connector is removed. An object of the present invention is to provide a connector lock cover.

  The connector lock cover according to the present invention is used when connecting the first connector provided at the distal end of the first medical tube and the second connector provided at the distal end of the second medical tube. The connector lock cover is attached to the first connector and has the following configuration.

  A rotation having a first open end and a second open end located on the opposite side of the first open end, housing the first connector therein, and preventing rotation with respect to the first connector on an inner peripheral surface thereof In the state where the cylindrical body portion provided with the blocking region is connected to the first open end side via a hinge mechanism, and the first medical tube and the second medical tube are connected. The mechanism includes a lock member that is movable between a position that engages with the second medical tube and a position that is separated from the second medical tube.

  In another form of the connector lock cover according to the present invention, on the inner peripheral surface of the cylindrical main body portion, in order to limit the movement of the first connector relative to the cylindrical main body portion in the axial direction, A sandwiching region for sandwiching a fuselage convex region provided from the axial direction so as to surround the outer surface of the first connector, and a plurality of stripe-shaped convex portions provided to extend in the axial direction on the outer surface of the first connector An engagement region as the rotation prevention region that engages with the region, and the lock member is provided with an engagement recess for engaging with the second medical tube.

  In another form of the connector lock cover according to the present invention, the lock member is provided with an engagement recess for engaging with the second medical tube.

  In another form of the connector lock cover according to the present invention, the cylindrical main body is located on the first open end side and on the second open end side, and A second cylindrical portion having a smaller diameter than the first cylindrical portion, and the first cylindrical portion side and the second open end side of the second cylindrical portion are each in a radial direction. A plurality of engagement pieces are provided that protrude inward and are divided and arranged along the circumferential direction.

  In another form of the connector lock cover according to the present invention, the clamping region is constituted by the engagement pieces provided on the first cylindrical portion side and the second open end side, respectively. The engagement region is configured by a circumferential clearance between the engagement pieces provided on the cylindrical portion side.

  In another form of the connector lock cover according to the present invention, the lock member includes an arm member extending from the hinge mechanism and an engagement member rising in a vertical direction from the arm member, and the engagement member The engaging concave portion is provided at the tip portion.

  In another form of the connector lock cover according to the present invention, the arm member has a lid member for closing the opening on the first open end side in a state where the arm member is folded on the first open end side. Yes.

  According to the lock cover for a connector based on the present invention, in the state where the first connector of the first medical tube is housed inside, the rotation of the first connector is prevented by the rotation prevention region, and the lock member is used as the second medical tube. By engaging with the medical tube, the rotation of the second connector of the second medical tube is prevented.

  As a result, the mutual rotation of the first connector of the first medical tube and the second connector of the second medical tube is prevented by the connector lock cover. Accordingly, even when a twisting force is applied to the medical tube, the connection between the first connector and the second connector is prevented from being disconnected, and the reliability of the connected state of the medical tube can be improved. It becomes possible.

  Each embodiment of the present invention will be described below. In the following embodiments, the same or corresponding parts are denoted by the same reference numerals, and the description thereof may not be repeated. Since the subject of the present invention is a connector lock cover attached to the connector, it is provided at the distal ends of the female connector 100 and the second medical tube 201 provided at the distal end of the first medical tube 101 described above. The male connector 200 is denoted by the same reference numeral, and the description thereof will not be repeated. Further, when referring to the number, amount, and the like, the scope of the present invention is not necessarily limited to the number, amount, and the like unless otherwise specified.

<Embodiment 1>
A connector lock cover according to an embodiment of the present invention will be described below with reference to FIGS. 1 is a first view showing the overall configuration of the connector lock cover according to the present embodiment, FIG. 2 is a sectional view taken along line II-II in FIG. 1, and FIG. 3 is in FIG. FIG. 4 is a sectional view taken along line IV-IV in FIG. 1, FIG. 5 is a sectional view taken along line VV in FIG. 1, and FIG. It is a 2nd figure which shows the whole structure of the lock cover for connectors in the form.

(Lock cover for connector 1)
1 and 2, a connector lock cover 1 according to an embodiment of the present invention includes a female connector 100 provided at the tip of a first medical tube 101 shown in FIG. 2 A lock cover for a connector that is used when connecting to the male connector 200 provided at the tip of the medical tube 201 and is attached to the female connector 100, and has the following configuration.

  The connector lock cover 1 is, for example, a polypropylene (PP) resin molded product, and has a first open end 11a and a second open end 11b located on the opposite side of the first open end 11a. It has a cylindrical main body 11 that houses the mold connector 100, and a lock member 20 that is connected to the first open end 11a via a hinge mechanism 30.

(Cylindrical body 11)
The cylindrical main body 11 includes a first cylindrical portion 11c having a first open end 11a, and a second cylindrical portion 11d having a second open end 11b that is provided with a smaller diameter than the outer diameter of the first cylindrical portion 11c. And. A conical part 11e that connects the first cylindrical part 11c and the second cylindrical part 1d is provided between the first cylindrical part 11c and the second cylindrical part 11d.

  As shown in FIG. 3, a plurality of streaky convex regions 18 provided to extend in the axial direction are provided on the inner peripheral surface of the first cylindrical portion 11c. In the present embodiment, streaky convex regions 18 are provided at a total of four locations at a 90 ° pitch on the circumference.

  As shown in FIG. 4, a plurality of streaky convex regions 14 provided to extend in the axial direction are provided on the outer surface of the second cylindrical portion 11 d. In the present embodiment, streaky convex regions 14 are provided at a total of four locations at a 90 ° pitch on the circumference.

  As shown in FIGS. 4 and 5, engagement pieces 15 and 17 each having a convex region are provided on the inner peripheral surface of the second cylindrical portion 11 d. The engagement piece 17 is provided in a connection region with the conical portion 11e of the second cylindrical portion 11d, protrudes inward in the radial direction, and is divided into four portions at a 90 ° pitch along the circumferential direction. . A gap is formed along the circumferential direction between the adjacent engagement pieces 17, and an engagement region 17 a as a rotation prevention region is formed by this gap.

  As shown in FIG. 5, the engagement piece 15 projects radially inward on the second open end 11b side of the second cylindrical portion 11d, and is divided into four locations at a 90 ° pitch along the circumferential direction. Has been placed. The shape and the like are provided to be the same as the engagement piece 17.

  The engaging piece 15 and the engaging piece 17 constitute a sandwiching region for sandwiching the rotor portion 102 forming the body convex portion region provided so as to surround the outer surface of the female connector 100 from the axial direction. 11, the movement of the female connector 100 in the axial direction with respect to 11 can be restricted. Further, the engagement piece 17 and the engagement region 17a can be engaged with the streak-shaped convex region 105 provided on the outer surface of the female connector 100, thereby preventing the rotation with respect to the female connector 100. To do.

(Lock member 20)
Next, the structure of the lock member 20 will be described with reference to FIGS. 1 and 6. The lock member 20 is connected to the first open end 11a of the cylindrical main body 11 with the hinge mechanism 30 interposed therebetween, and in the state where the first medical tube 101 and the second medical tube 201 are connected, the hinge mechanism 30 is provided so as to be movable between a position engaging with the second medical tube 201 (position shown in FIG. 6) and a position separating from the second medical tube 201 (position shown in FIG. 1). Yes.

  The lock member 20 includes an arm member 21 extending from the hinge mechanism 30 and an engagement member 22 rising from the arm member 21 in the vertical direction. Ribs 23 and 23 for reinforcement are provided at the connecting portion between the arm member 21 and the engaging member 22. Further, an engagement recess 24 for engaging the second medical tube 201 so as to sandwich the second medical tube 201 is provided at the distal end portion of the engagement member 22.

(Hinge mechanism 30)
A hinge mechanism 30 provided between the lock member 20 and the first open end 11a of the cylindrical main body portion 11 straddles the lock member 20 and the cylindrical main body portion 11 as appears well in FIGS. A rectangular opening 33 provided in the opening 33, connecting members 31, 31 provided on both sides of the opening 33 for connecting the lock member 20 and the cylindrical main body 11, and the opening 33. And a folded piece 34 that connects the lock member 20 and the cylindrical main body 11.

  In the state in which the lock member 20 is most opened with respect to the cylindrical main body 11, the folded piece 34 is bent in a “U” shape toward the outside as shown in FIGS. The open state of the lock member 20 is maintained by the elastic force 34. As shown in FIG. 6, in the state where the lock member 20 is erected, the engagement recess 24 is engaged so as to sandwich the second medical tube 201, so that the erected state of the lock member 20 is maintained. It will be.

  Next, a state where the connector lock cover 1 is attached to the female connector 100 will be described with reference to FIGS. 7 and 8. 7 is a diagram showing an overall configuration in a state where the connector lock cover 1 is attached to the female connector 100, and FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG.

  As shown in FIG. 8, the trunk convex region provided so as to surround the outer surface of the female connector 100 by the engagement piece 15 and the engagement piece 17 provided on the inner peripheral surface of the second cylindrical portion 11 d. Thus, it is possible to limit the movement of the female connector 100 in the axial direction with respect to the cylindrical main body 11.

  Furthermore, the engagement piece 17 and the engagement region 17a can be engaged with the streak-shaped convex region 105 provided on the outer surface of the female connector 100, thereby preventing rotation with respect to the female connector 100. To do.

  Next, a state in which the connector lock cover 1 is attached to the female connector 100 and the male connector 200 is connected to the female connector 100 will be described with reference to FIGS. 9 and 10. 9 shows a state where the lock member 20 is not engaged with the second medical tube 201 to which the male connector 200 is connected, and FIG. 10 shows the second medical device to which the male connector 200 is connected. It is a figure which shows the state which the lock member 20 is engaging with the tube 201. FIG.

  As shown in FIG. 10, the engagement recess 24 provided in the engagement member 22 of the lock member 20 is engaged with the second medical tube 201. Thereby, the mutual rotation of the first connector 101 of the first medical tube 101 and the male connector 200 of the second medical tube 201 is blocked by the connector lock cover 1.

  As a result, even when a twisting force is applied to each of the first medical tube 101 and the second medical tube 201, the connection between the female connector 100 and the male connector 200 is prevented from being disconnected, It is possible to improve the reliability of the connected state of the medical tube.

<Embodiment 2>
Next, the structure of the connector lock cover 1A according to the second embodiment based on the present invention will be described with reference to FIGS. FIG. 11 is a diagram showing the overall configuration of the connector lock cover in the present embodiment, and FIG. 12 is a diagram showing the overall configuration in a state where the connector lock cover 1A is attached to the female connector 100. . In the present embodiment, the basic structure is the same as the structure of the connector lock cover 1 in the first embodiment, and the difference is that the shape of the lock member is different.

  As shown in FIG. 11, the lock member 20 </ b> A in the present embodiment is provided with a substantially circular lid member 21 </ b> A in a region corresponding to the arm member 21 of the lock member 20 in the first embodiment. Thus, in the state where the connector lock cover 1A is attached to the female connector 100, the opening of the first open end 11a is closed in the state where the lock member 20A is folded to the first open end 11a as shown in FIG. It becomes possible. As a result, the exposure of the female side passage 120 in the state where the male connector 200 is not connected to the female connector 100 is avoided, and adhesion of bacteria to the female side passage 120 can be prevented.

  Although the embodiments of the present invention have been described above, the embodiments disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

1 is a first diagram illustrating an overall configuration of a connector lock cover according to Embodiment 1. FIG. FIG. 2 is a cross-sectional view taken along line II-II in FIG. 1. FIG. 3 is a cross-sectional view taken along line III-III in FIG. 1. FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 1. FIG. 5 is a view taken along line VV in FIG. It is a 2nd figure which shows the whole structure of the lock cover for connectors in this Embodiment. It is a figure which shows the whole structure of the state which attached the lock cover for connectors in Embodiment 1 to the 1st connector. 8 is a cross-sectional view taken along line VIII-VIII in FIG. It is a figure which shows the state which the lock member of the lock cover for connectors in Embodiment 1 is not engaging with the 2nd medical tube. It is a figure which shows the state which the lock member of the lock cover for connectors in Embodiment 1 engaged with the 2nd medical tube. FIG. 6 is a diagram showing an overall configuration of a connector lock cover according to a second embodiment. It is a figure which shows the whole structure of the state which attached the lock cover for connectors in Embodiment 2 to the 1st connector. It is a figure which shows schematic structure of the medical tube in background art. It is a figure which shows schematic structure of the medical tube of the connected state in background art.

Explanation of symbols

  1, 1A Connector lock cover, 11 cylindrical body, 11a first open end, 11b second open end, 11c first cylindrical portion, 11d second cylindrical portion, 11e conical portion, 14, 18 streaky convex Part region, 15, 17 Engagement piece, 17a Engagement region, 20 Lock member, 21 Arm member, 22 Engagement member, 23 Rib, 24 Engagement recess, 30 Hinge mechanism, 31 Connecting member, 33 Opening part, 34 Folding Piece, 100 Female connector, 101 First medical tube, 102 Rotor part, 103 Operation rotor part, 104 Coupling body part, 105 Line-shaped convex region, 120 Female side passage, 200 Male connector, 201 Second medical use Tube, 202 coupling body part, 203 streaky convex region, 204 male side passage, 205 flange part, 21A lid member.

Claims (5)

Used to connect the first connector (100) provided at the tip of the first medical tube (101) and the second connector (200) provided at the tip of the second medical tube (201). A connector lock cover attached to the first connector,
It has a first open end (11a) and a second open end (11b) located on the opposite side of the first open end (11a), and accommodates the first connector (102) inside, and its inner periphery A cylindrical main body (11) provided with a rotation preventing region (17a) for preventing rotation with respect to the first connector (102) on a surface;
In a state where the first medical tube (101) and the second medical tube (201) are connected to each other via the hinge mechanism (30 ) on the first open end (11a) side, A lock member (20) provided by a hinge mechanism (30) so as to be movable between a position engaging with the second medical tube (201) and a position separating from the second medical tube (201). And a connector lock cover. On the inner peripheral surface of the cylindrical main body (11),
In order to limit the movement of the first connector (102) in the axial direction with respect to the cylindrical main body (11), a fuselage convex region (around the outer surface of the first connector (102)). 102) from the axial direction sandwiching area (15, 17),
An engagement region (17a) as the rotation-preventing region (17a) that engages with a plurality of stripe-shaped convex region (105) provided to extend in the axial direction on the outer surface of the first connector (102); Is provided,
The connector lock cover according to claim 1, wherein the lock member (20) is provided with an engagement recess (24) for engaging with the second medical tube (201). The cylindrical main body (11)
A first cylindrical portion (11c) located on the first open end (11a) side;
A second cylindrical part (11d) located on the second open end (11b) side and having a smaller diameter than the first cylindrical part (11c) ,
The second cylindrical portion (11d) protrudes radially inward from the first cylindrical portion (11c) side and the second open end (11b) side, and is divided and arranged along the circumferential direction. A plurality of engagement pieces (15, 17) are provided,
The clamping region is configured by the engagement pieces (15, 17) provided on the first cylindrical portion (11c) side and the second open end (11b) side, respectively, and the first cylindrical portion (11c ) side the engagement region (17a) is constituted by circumferential gap of the engagement tabs provided (17) to lock the cover connector according to claim 2. The locking member (20)
An arm member (21) extending from the hinge mechanism (30);
An engagement member (22) rising vertically from the arm member (21),
The connector lock cover according to claim 2 or 3, wherein the engagement recess (24) is provided at a distal end portion of the engagement member (22). Said arm member (21), in a state where the first folded open end (11a) side, a lid member (21A) which closes the opening of the first open end (11a) side, of claims 1-4 The lock cover for connectors according to any one of the above.

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