JP6329008B2 - Medical connector - Google Patents

Description

  The present invention relates to a medical connector.

  In recent years, the peritoneal dialysis treatment method is smaller and simpler, the treatment costs are lower, the peritoneal adhesion can be prevented, and the burden on the patient is less than the dialysis method using an artificial kidney. It is attracting attention for such reasons.

  Among these peritoneal dialysis methods, especially continuous ambulatory peritoneal dialysis, the patient can change dialysate containers (bags) at home or at work, and thus return to society. It is easy and attracts much attention.

  In this CAPD, a catheter tube (peritoneal catheter) is placed in the abdominal cavity of a patient, a transfer tube is connected to the outer end of the catheter tube, and a bag tube of a dialysate bag (injection bag) containing dialysate therein. The dialysate in the bag is injected into the abdominal cavity through each tube, and after dialyzing for a predetermined time, the dialysate drainage in the abdominal cavity is collected in the drainage bag through each tube. is there. The tubes are connected to each other by fitting a male connector and a female connector respectively attached to the ends of both tubes.

  As a connector for peritoneal dialysis having such a male connector and a female connector, for example, the one described in Patent Document 1 is known. In this peritoneal dialysis connector, when the male connector (patient side connector) and the female connector (circuit side connector) are connected, the male screw of the male connector and the female screw of the female connector are screwed together. Further, after use, a cap is attached to the male connector, and when the cap is attached, the male screw of the male connector and the female screw of the cap are screwed together.

  However, in such a peritoneal dialysis connector, when the male connector and the female connector are connected, it is necessary to screw the male screw of the male connector and the female screw of the female connector while maintaining liquid tightness. The connection work was difficult because it required force and did not know how much it should be tightened. The same applies when the cap is attached.

JP 2008-43562 A

  An object of the present invention is to provide a medical connector capable of easily connecting a first member and a second member.

Such an object is achieved by the present inventions (1) to (9) below.
(1) a first member composed of a first connector;
A second member constituted by a second connector or a second cap that is detachably connected to the first member;
The first member has a first protrusion,
The second member has a second convex portion that can be engaged with the first convex portion,
When connecting the first member and the second member, if the second member is moved in the direction of the central axis of the first member with respect to the first member, the first protrusion and the first member When the second member engages and the second member is removed from the first member, the second member is rotated by a predetermined amount around the central axis with respect to the first member. The engagement between the first convex portion and the second convex portion is released ,
A guide part for guiding the first convex part to the second convex part when connecting the first member and the second member;
The guide portion is a pair of wall portions provided on the second member. When the first member and the second member are connected, the first convex portion is the pair of wall portions. A medical connector characterized by being disposed between the two .
(2) a first member composed of a first connector;
A second member constituted by a second connector or a second cap that is detachably connected to the first member;
The first member has a first protrusion,
The second member has a second convex portion that can be engaged with the first convex portion,
When connecting the first member and the second member, if the second member is moved in the direction of the central axis of the first member with respect to the first member, the first protrusion and the first member When the second member engages and the second member is removed from the first member, the second member is rotated by a predetermined amount around the central axis with respect to the first member. The engagement between the first convex portion and the second convex portion is released,
The first convex portion has a first inclined surface on the second member side in a state where the first member and the second member are connected,
When connecting the first member and the second member, the second convex portion moves along the first inclined surface with respect to the first convex portion, and the first convex portion Medical connector characterized by overcoming

( 3 ) The medical connector according to ( 2 ), further including a guide portion that guides the first convex portion to the second convex portion when the first member and the second member are connected.

( 4 ) The guide portion is a pair of wall portions provided on the second member. When the first member and the second member are connected, the first convex portion is the pair of walls. The medical connector as described in said ( 3 ) arrange | positioned between wall parts.

( 5 ) When removing the second member from the first member, the second member is disengaged from the first convex portion and the second convex portion with respect to the first member. The medical connector according to any one of (1) to ( 4 ), further including a rotation prevention unit that prevents further rotation from the position.
(6) a first member composed of a first connector;
A second member constituted by a second connector or a second cap that is detachably connected to the first member;
The first member has a first protrusion,
The second member has a second convex portion that can be engaged with the first convex portion,
When connecting the first member and the second member, if the second member is moved in the direction of the central axis of the first member with respect to the first member, the first protrusion and the first member When the second member engages and the second member is removed from the first member, the second member is rotated by a predetermined amount around the central axis with respect to the first member. The engagement between the first convex portion and the second convex portion is released,
When removing the second member from the first member, the second member further moves from a position where the engagement between the first convex portion and the second convex portion is released with respect to the first member. A medical connector characterized by having a rotation preventing portion for preventing rotation.

( 7 ) The medical connector according to ( 5 ) or (6) , wherein the rotation blocking portion is a contact portion that is provided on the second member and contacts the first convex portion.

( 8 ) The second protrusion has a second inclined surface on the first member side in a state where the first member and the second member are connected.
When connecting the first member and the second member, the first convex portion moves along the second inclined surface with respect to the second convex portion, and the second convex portion The medical connector according to any one of the above (1) to ( 7 ).

( 9 ) a first member composed of a first connector;
A second member constituted by a second connector or a second cap that is detachably connected to the first member;
The first member has a first protrusion,
The second member has a second convex portion that can be engaged with the first convex portion,
When connecting the first member and the second member, if the second member is moved in the direction of the central axis of the first member with respect to the first member, the first protrusion and the first member When the second member engages and the second member is removed from the first member, the second member is rotated by a predetermined amount around the central axis with respect to the first member. The engagement between the first convex portion and the second convex portion is released,
A third member constituted by a third connector or a third cap detachably connected to the first member;
The first member has a first screw;
The third member has a third protrusion that can be engaged with the first protrusion and a second screw that can be screwed into the first screw.
When connecting the first member and the third member, if the third member is rotated around the central axis with respect to the first member, the first screw and the second screw Are screwed together, and the first convex portion climbs over the third convex portion, and when the third member is removed from the first member, the third member is moved relative to the first member with respect to the central axis. When rotating around in the opposite direction to the connection, the first convex portion gets over the third convex portion, and the screwing of the first screw and the second screw is released ,
The medical connector , wherein the third convex portion is a rib extending in an axial direction of the third member .

  According to the present invention, by moving the second member in the direction of the central axis of the first member relative to the first member, the first convex portion of the first member and the second convex portion of the second member. And the first member and the second member are connected to each other, so that the connection work can be performed easily and quickly.

  When removing the second member from the first member, that is, when releasing the connection between the first member and the second member, the second member is rotated around the central axis of the first member with respect to the first member. Since the engagement between the first convex portion and the second convex portion is released when the first convex portion is rotated by a predetermined amount, the removal operation can be easily and quickly performed.

It is the schematic which shows 1st Embodiment at the time of applying the medical connector of this invention to the connector of a peritoneal dialysis set. It is a perspective view of the medical connector shown in FIG. It is a longitudinal cross-sectional view (AA sectional view taken on the line in FIG. 2) of the medical connector shown in FIG. It is a cross-sectional view (BB sectional view taken on the line in FIG. 3) of the medical connector shown in FIG. It is a perspective view of the 1st connector of the medical connector shown in FIG. It is a side view of the 1st connector of the medical connector shown in FIG. It is a longitudinal cross-sectional view (CC sectional view taken on the line in FIG. 5) of the 1st connector of the medical connector shown in FIG. It is a longitudinal cross-sectional view (DD sectional view taken on the line in FIG. 5) of the 1st connector of the medical connector shown in FIG. It is a perspective view of the cap of the medical connector shown in FIG. It is a side view of the cap of the medical connector shown in FIG. It is a bottom view of the cap of the medical connector shown in FIG. It is a longitudinal cross-sectional view (EE sectional view taken on the line in FIG. 10) of the cap of the medical connector shown in FIG. It is a cross-sectional view (FF sectional view taken on the line in FIG. 10) of the cap of the medical connector shown in FIG. It is a cross-sectional view (GG sectional view taken on the line in FIG. 10) of the cap of the medical connector shown in FIG. It is a longitudinal cross-sectional view of the medical connector shown in FIG. It is a longitudinal cross-sectional view of the 2nd connector of the medical connector shown in FIG. It is a longitudinal cross-sectional view which shows 2nd Embodiment of the medical connector of this invention. It is a perspective view of the 1st connector of the medical connector shown in FIG. It is a bottom view of the cap of the medical connector shown in FIG. It is a longitudinal cross-sectional view of the cap of the medical connector shown in FIG. It is a longitudinal cross-sectional view which shows 2nd Embodiment of the medical connector of this invention. It is a longitudinal cross-sectional view of the 2nd connector of the medical connector of this invention shown in FIG.

Hereinafter, the medical connector of the present invention will be described in detail based on an embodiment shown in the accompanying drawings.
In addition, although the medical connector of this invention can be applied to various medical connectors, the following embodiment demonstrates the case where the medical connector of this invention is applied to the connector of a peritoneal dialysis set.

<First Embodiment>
FIG. 1 is a schematic view showing a first embodiment when the medical connector of the present invention is applied to a connector of a peritoneal dialysis set. FIG. 2 is a perspective view of the medical connector shown in FIG. 3 is a longitudinal sectional view (a sectional view taken along line AA in FIG. 2) of the medical connector shown in FIG. 4 is a cross-sectional view of the medical connector shown in FIG. 1 (a cross-sectional view taken along line BB in FIG. 3). FIG. 5 is a perspective view of the first connector of the medical connector shown in FIG. 1. FIG. 6 is a side view of the first connector of the medical connector shown in FIG. 1. 7 is a longitudinal cross-sectional view (cross-sectional view taken along the line CC in FIG. 5) of the first connector of the medical connector shown in FIG. 8 is a longitudinal sectional view (a sectional view taken along line DD in FIG. 5) of the first connector of the medical connector shown in FIG. FIG. 9 is a perspective view of the cap of the medical connector shown in FIG. FIG. 10 is a side view of the cap of the medical connector shown in FIG. FIG. 11 is a bottom view of the cap of the medical connector shown in FIG. 12 is a vertical cross-sectional view (cross-sectional view taken along the line E-E in FIG. 10) of the cap of the medical connector shown in FIG. 1. 13 is a cross-sectional view (cross-sectional view taken along the line FF in FIG. 10) of the cap of the medical connector shown in FIG. 14 is a cross-sectional view (a cross-sectional view taken along the line GG in FIG. 10) of the cap of the medical connector shown in FIG. 15 is a longitudinal sectional view of the medical connector shown in FIG. 16 is a longitudinal sectional view of a second connector of the medical connector shown in FIG.

  In the following, for convenience of explanation, the right side in FIGS. 2, 3, 5 to 10, 12, 15, and 16 is “right” or “bag side”, and the left side is “left” or “patient”. Side ". 2 to 16, the upper side is referred to as “upper” or “upper”, and the lower side is referred to as “lower” or “lower”.

  Moreover, the illustration of the sealing member illustrated in FIGS. 3 and 15 is omitted in other drawings.

  In this specification, “displace B with respect to A” means that A and B are relatively displaced. For example, only A may be displaced, or only B may be displaced. Alternatively, A and B may be displaced. Moreover, the said displacement shows a movement, rotation, rotation, etc. by a high-order concept, for example.

  The peritoneal dialysis set 1 shown in FIG. 1 can be preferably used for continuous ambulatory peritoneal dialysis among the peritoneal dialysis methods, that is, when performing peritoneal dialysis. The dialysate is injected into the inside (intraperitoneal cavity), and then the dialysate drainage is collected.

  The peritoneal dialysis set 1 includes a dialysate bag 4 filled with dialysate, a bag side tube 11 connected to the dialysate bag 4, and a drain for collecting dialysate drainage (hereinafter simply referred to as “drainage”). A liquid bag (not shown), a bag side tube (not shown) connected to the drainage bag, and a transfer tube (patient side tube) 18 connected to a catheter (not shown) placed in the patient's peritoneum. And the medical connector 2 for detachably connecting the bag side tube 11 and the transfer tube 18 and detachably connecting the bag side tube connected to the drainage bag and the transfer tube 18. The connection between the bag side tube 11 and the transfer tube 18 and the connection between the bag side tube connected to the drainage bag and the transfer tube 18 are made selectively.

  Although the medical connector 2 will be described in detail later, the medical connector 2 includes connectors 5 and 6 and a cap 7. And the connector 6 is connected to the bag side tube 11 and the bag side tube connected to the drainage bag, respectively, and the connector 5 is connected to the transfer tube 18. The tube 11 and the transfer tube 18 are connected by the connectors 5 and 6 of the medical connector 2. The bag side tube connected to the drainage bag and the transfer tube 18 are connected to the medical connector 2. This is done by our connectors 5 and 6. In addition, since the connector 6 connected to the bag side tube 11 and the connector 6 connected to the bag side tube connected to the drainage bag are the same, in the following, typically, the bag side tube 11 is connected to the bag side tube 11. The connected connector 6 will be described.

  The dialysate bag 4 is formed by forming a sheet material made of a flexible resin such as soft polyvinyl chloride into a bag shape. In addition, it is good also as a multi-chamber container which provided the partition 4a in the inside (lumen) as needed. The dialysate bag 4 is suspended from a hanger (not shown) with the side to which the bag-side tube 11 is connected facing downward in the vertical direction. The drainage bag is formed by forming a sheet material made of a flexible resin such as soft polyvinyl chloride into a bag shape.

  One end of the bag-side tube 11 is connected to the dialysate bag 4 and communicates with the dialysate bag 4, and the other end is connected to the connector 6 and communicates with the connector 6.

  In addition, it is preferable that the bag side tube 11 has flexibility and a softness | flexibility, As a constituent material, for example, polyolefin resin, such as polyvinyl chloride, polyethylene, polypropylene, EVA, PET, PBT And a thermoplastic resin such as a polyester resin, polyurethane, polyamide, silicone, polyester elastomer, polyamide elastomer, styrene-butadiene-styrene copolymer, or a resin in which two or more of these are appropriately combined.

  One end of the transfer tube 18 is connected to the connector 5 and communicates with the connector 5.

  The transfer tube 18 is provided with a connector 17 that removably connects the middle of the transfer tube 18. The connector 17 has a configuration (for example, a double structure) that can aseptically hold the flow path inside the connector 17 when the connector 17 is attached or detached.

  In addition, a roller clamp 16 that opens and closes a flow path in the transfer tube 18 is installed on the medical connector 2 side of the transfer tube 18 from the connector 17.

  Although it does not specifically limit as a constituent material of the transfer tube 18, For example, the thing similar to the constituent material quoted by description of the bag side tube 11 can be used.

  As shown in FIGS. 1 to 16, the medical connector 2 includes a connector (first connector) 5 that is a first member connected to the transfer tube 18 and a second member connected to the bag-side tube 11. A connector (second connector) 6 and a connector (not shown) connected to a bag side tube connected to the drainage bag (this connector is the same as the connector 6, and as described above, And a cap (first cap) 7 as a second member. The connector 6 is detachably connected to the connector 5, and similarly, the cap 7 is detachably attached to the connector 5. In this embodiment, the male and female connectors 5 and the cap 7 are female in the present embodiment.

  In the state where the connector 5 and the connector 6 are connected (the state shown in FIG. 15), the flow of the liquid (the dialysate from the bag side to the patient side) is passed through the connector 5 and the connector 6, that is, the medical connector 2. Distribution or distribution of drainage from the patient side to the bag side).

  As shown in FIGS. 5 to 8, the connector 5 has a cylindrical shape as a whole. This connector 5 is provided on the left side and is provided on the outer peripheral side of the inner tubular portion 52 and the inner tubular portion 52 that is provided on the right side and is formed in a tubular shape, and is connected to the transfer tube 18. It has an outer tubular portion 53 having a tubular shape and a large diameter portion 55 that is provided at the center portion in the direction of the central axis O1 of the connector 5 and has the largest outer diameter.

  A tapered surface is formed on the outer peripheral portion of the inner tubular portion 52 by gradually decreasing the outer diameter of the inner tubular portion 52 toward the right side. The inner tubular portion 52 has a tapered surface although the angle of inclination is small in the drawing, so that the inner tubular portion 52 does not appear to be a tapered surface. This action of the taper surface is performed when the taper surface of the cap 7 described later is described.

  In addition, you may make the outer peripheral part of the inner side tubular part 52 into a surface parallel to the center axis | shaft O1, without making it a taper surface. In this case, it is preferable to install the sealing member 32 which is an O-ring on the cap 7 and the connector 6 as in a second embodiment described later (see FIGS. 17 and 21). With this sealing member 32, the connector 5 and the cap 7, and the connector 5 and the connector 6 are sealed in a liquid-tight manner at that portion.

  The outer tubular portion 53 protrudes to the right side from the inner tubular portion 52. A pair of convex portions (first convex portions) 54 projecting outward (upper side or lower side in FIG. 7) is provided at the right end of the outer tubular portion 53. The pair of convex portions 54 are arranged so as to face each other via the central axis O1 of the connector 5, that is, at an interval of 180 °. In addition, since each convex part 54 is the same, below, the one convex part 54 is demonstrated typically.

  The convex portion 54 has an inclined surface (first inclined surface) 541 on the right side (cap 7 side) in a state where the cap 7 is attached to the connector 5 (the state shown in FIG. 3), and the left side ( A flat surface (first flat surface) 542 orthogonal to the central axis O1 of the connector 5 is provided on the side opposite to the cap 7. The inclined surface 541 is inclined such that the height of the convex portion 54 in the vertical direction in FIG. 7 gradually decreases toward the right side, so that the height on the right side decreases. The function of the convex portion 54 will be described when explaining the convex portion of the cap 7 to be described later.

  A pair of markers 56 is provided on the outer peripheral portion of the large diameter portion 55. The pair of markers 56 are arranged so as to face each other via the central axis O1 of the connector 5, that is, at an interval of 180 °. And each marker 56 is arrange | positioned so that each marker 56 and each convex part 54 may be located on the straight line orthogonal to the central axis O1, when it sees from the direction of the central axis O1. Moreover, each marker 56 is comprised by protrusion in this embodiment. As a result, the position of the marker 56 can be grasped not only by visual observation but also by touching with a finger, and even the visually impaired can know the position of the marker 56. The function of the marker 56 will be described when the marker 73 of the cap 7 described later is described.

  A groove 57 is formed on the right side of the large-diameter portion 55 over the entire circumference in the circumferential direction. A sealing member 31 that is an O-ring is installed in the groove 57 (see FIG. 3). The sealing member 31 provides a liquid-tight seal between the connector 5 and the cap 7 at that portion.

  Although it does not specifically limit as a constituent material of the sealing member 31, For example, natural rubber, isoprene rubber, butadiene rubber, styrene-butadiene rubber, nitrile rubber, chloroprene rubber, butyl rubber, acrylic rubber, ethylene-propylene rubber, hydrin rubber, urethane Various rubber materials such as rubber, silicone rubber, fluoro rubber (especially vulcanized), styrene, polyolefin, polyvinyl chloride, polyurethane, polyester, polyamide, polybutadiene, trans polyisoprene And various thermoplastic elastomers such as fluororubber and chlorinated polyethylene, and relatively flexible resin materials such as polyethylene and vinyl chloride resin. One or more of these may be used in combination. be able to.

  In addition, the constituent materials of the connector 5, the connector 6 and the cap 7, which will be described later, are not particularly limited. For example, polyvinyl chloride, polyethylene, polypropylene, cyclic polyolefin, polystyrene, poly- (4-methylpentene-1) , Polycarbonate, acrylic resin, acrylonitrile-butadiene-styrene copolymer, polyester such as polyethylene terephthalate, polyethylene naphthalate, butadiene-styrene copolymer, polyamide (for example, nylon 6, nylon 6,6, nylon 6,10, nylon 12), various resins such as ethylene-vinyl alcohol copolymer, polyallylsulfone, polyethersulfone, methacryl-styrene copolymer, polyarylate, styrene-acrylonitrile copolymer. It is, but among them, molding in terms of easy, polypropylene, cyclic polyolefins, polyesters, poly - (4-methylpentene-1) resin such as is preferred. And 1 type or 2 types or more of the above can be mixed and used.

  As shown in FIGS. 9 to 14, the entire shape of the cap 7 is a bottomed cylindrical shape that opens to the left. The cap 7 includes an outer cylindrical portion 70 having a bottomed cylindrical shape and an inner cylindrical portion 71 provided on the inner peripheral side of the outer cylindrical portion 70 and having a bottomed cylindrical shape. A large-diameter portion 72 having the largest outer diameter among the outer cylindrical portions 70 is provided on the outer peripheral portion of the left end portion of the outer cylindrical portion 70. In addition, a plurality of (for example, 4 to 12) ribs 701 disposed intermittently along the circumferential direction are provided on the outer peripheral portion of the outer cylindrical portion 70. Thereby, the slip of the finger with respect to the cap 7 at the time of operation can be prevented.

  The inner cylindrical portion 71 is disposed at the central portion of the cap 7 in the direction of the central axis O <b> 2, and the left end portion of the inner cylindrical portion 71 is on the right side of the left end portion of the outer cylindrical portion 70. Is arranged.

  Further, a taper surface is formed on the inner peripheral portion on the left side of the inner cylindrical portion 71 by gradually increasing the inner diameter of the inner cylindrical portion 71 toward the left side. It should be noted that the tapered surface of the inner cylindrical portion 71 has a small inclination angle in the drawing, so that although it does not appear to be a tapered surface, it is a tapered surface. In a state where the cap 7 is attached to the connector 5, the inner tubular portion 52 of the connector 5 is inserted into the inner tubular portion 71, and the inner tubular portion 71 and the inner tubular portion 52 are taper-fitted. Thereby, the space between the inner cylindrical portion 71 and the inner tubular portion 52 is liquid-tightly sealed.

  As described above, when the sealing member 32 is installed on the cap 7, the inner peripheral surface of the inner cylindrical portion 71 may be a surface parallel to the central axis O <b> 2 instead of a tapered surface.

  In addition, a pair of outer cylindrical portions 70 that protrude toward the inner side (upper side or lower side in FIG. 12), that is, toward the central axis O2, are arranged at the inner peripheral portion of the central portion in the direction of the central axis O2. A convex portion (second convex portion) 74 is provided. The pair of convex portions 74 are arranged so as to face each other via the central axis O2 of the cap 7, that is, at an interval of 180 °. In addition, since each convex part 74 is the same, below, the one convex part 74 is demonstrated typically.

  The convex portion 74 has an inclined surface (second inclined surface) 741 on the left side (connector 5 side) in a state where the cap 7 is attached to the connector 5 and on the right side (opposite side of the connector 5). And a flat surface (second flat surface) 742 perpendicular to the central axis O2 of the cap 7. The inclined surface 741 is inclined so that the height on the left side becomes lower as the height of the convex portion 74 in FIG. 12 in the vertical direction gradually decreases toward the left side.

  When attaching the cap 7 to the connector 5, the cap 7 is moved relative to the connector 5 along the direction of the central axis O <b> 1 in a direction in which the caps 7 approach each other. Thereby, the convex part 54 of the connector 5 gets over the convex part 74 of the cap 7 (the convex part 74 of the cap 7 gets over the convex part 54 of the connector 5), and the convex part 54 and the convex part 74 engage. When the convex portion 54 gets over the convex portion 74, the inclined surface 541 of the convex portion 54 moves smoothly along the inclined surface 741 of the convex portion 74, and the convex portion 54 can easily get over the convex portion 74. In addition, after the convex portion 54 gets over the convex portion 74, the flat surface 542 of the convex portion 54 comes into contact with the flat surface 742 of the convex portion 74, thereby preventing the cap 7 from being detached from the connector 5. The state where the cap 7 is attached to 5 is maintained.

  Further, a pair of wall portions 751 and 752 constituting a guide portion for guiding the convex portion 54 to the convex portion 74 when the cap 7 is attached to the connector 5 are provided on the inner peripheral portion of the outer cylindrical portion 70. ing. Since one set of the pair of wall portions 751 and 752 is provided for one convex portion 74, two sets are provided in total. In the following, one pair of wall portions 751 and 752 will be described as a representative. In addition, a pair of other portions described later that are provided on the cap 7 and act on the pair of convex portions 54 are also provided, but one of them will be described below representatively.

  The pair of wall portions 751 and 752 have a longitudinal shape extending in the direction of the central axis O2, and are disposed so as to face each other with the convex portion 74 interposed therebetween. Further, the interval between the wall portions 751 and 752 is the widest at the left end portion in FIG. 12, gradually decreases from there to the right side, and finally becomes constant. When attaching the cap 7 to the connector 5, the convex portion 54 is disposed between the wall portions 751 and 752 as viewed from the direction of the central axes O1 and O2, but between the wall portions 751 and 752. Since the interval is wide at the left end, that is, the entrance side, the convex portion 54 can be easily and reliably disposed between the wall portions 751 and 752.

  The length of the wall 751 in the direction of the central axis O2 is longer than that of the wall 752. That is, the position of the right end of the wall 752 in FIG. 12 coincides with the position of the right end of the protrusion 74, while the right end of the wall 751 is the right end of the protrusion 74. It is located further to the right than the end. As a result, it is possible to rotate the cap 7 around the central axis O1 toward the wall 752 side with respect to the connector 5 with the cap 7 attached to the connector 5, but to the wall 751 side. It is impossible to rotate the convex portion 54 because it abuts against the wall portion 751.

  A rib 753 extending in the direction of the central axis O2 is provided on the right side in FIG. 12 of the wall portion 752 of the inner peripheral portion of the outer cylindrical portion 70 (see FIGS. 12 and 14). The height of the rib 753 in the direction orthogonal to the central axis O2 is lower than the height of the wall 751. The rib 753 can prevent the cap 7 from unintentionally rotating toward the wall 752 around the central axis O1 with respect to the connector 5 in a state where the cap 7 is attached to the connector 5. . That is, when the cap 7 is attached to the connector 5, the convex portion 54 is positioned between the wall portion 751 and the rib 753, and the cap 7 is prevented from rotating unintentionally with respect to the connector 5. However, since the height of the rib 753 is relatively low, it is possible to rotate the cap 7 around the central axis O1 toward the wall 752 with respect to the connector 5 by applying a predetermined force.

  Further, a wall portion 754 serving as a rotation preventing portion is provided on the inner peripheral portion of the outer cylindrical portion 70. The wall portion 754 is disposed at a position spaced apart from the wall portion 752 and the rib 753 by a predetermined distance in the clockwise direction in FIG. The wall portion 754 has an L shape, and the longitudinal direction thereof coincides with the direction of the central axis O2.

  Further, a hole 76 penetrating in the direction of the central axis O2 is provided in the immediate vicinity of the wall portion 754 in the counterclockwise direction in FIG. The hole 76 has a size through which the convex portion 54 can pass.

  When removing the cap 7 from the connector 5, the cap 7 is rotated by a predetermined amount around the central axis O1 toward the wall portion 754 with respect to the connector 5. At this time, the convex portion 54 gets over the rib 753, and the wall It abuts on the portion 754 and stops at the position of the hole 76. In this way, the cap 7 is further rotated with respect to the connector 5 from the position where the engagement between the convex portion 54 and the convex portion 74 is released, that is, the position where the convex portion 54 and the hole 76 coincide. To be prevented.

  A pair of markers 73 is provided on the outer peripheral portion of the large diameter portion 72. The pair of markers 73 are arranged so as to face each other via the central axis O2 of the cap 7, that is, at an interval of 180 °. And each marker 73 is arrange | positioned so that each marker 73 and each convex part 74 may be located on the straight line orthogonal to the central axis O2, when it sees from the direction of the central axis O2. Moreover, each marker 73 is comprised by protrusion in this embodiment. As a result, the position of the marker 73 can be grasped not only by visual observation but also by touching with a finger, and even the blind person can know the position of the marker 73. When the cap 7 is attached to the connector 5, the convex portion 54 of the connector 5 and the convex portion 74 of the cap 7 are centered by aligning the marker 56 of the connector 5 with the marker 73 of the cap 7. They are arranged to match the directions of O1 and O2.

  Next, the connector 6 will be described. The difference from the cap 7 will be mainly described. Regarding the same matters, the highest digit of each symbol of the cap 7 is changed from “7” to “6”. The description is omitted.

  As shown in FIGS. 15 and 16, the connector 6 has a cylindrical shape as a whole. The connector 6 is provided on the left side and has an outer cylindrical part 70 having a bottomed cylindrical shape, and an inner cylindrical part 71 which is provided on the left side and the inner peripheral side of the outer cylindrical part 70 and has a bottomed cylindrical shape. And a connecting portion 69 having a tubular shape that is provided on the right side and connected to the bag-side tube 11.

  Further, a plurality of (for example, 4 to 12) ribs 601 are provided on the outer peripheral portion of the connector 6 intermittently along the circumferential direction (see FIG. 1). Thereby, the slip of the finger with respect to the connector 6 at the time of operation can be prevented.

  Next, the procedure and operation when the cap 7 is attached to and detached from the connector 5 and when the connector 5 and the connector 6 are connected and released are described. Note that the procedure and action when the cap 7 is attached to and detached from the connector 5 and when the connector 5 and the connector 6 are connected and released are the same. The procedure and operation when attaching and detaching are described.

  When attaching the cap 7 to the connector 5, first, the marker 56 of the connector 5 is matched with the marker 73 of the cap 7. Thereby, the convex part 54 of the connector 5 and the convex part 74 of the cap 7 are arranged so as to coincide with the directions of the central axes O1 and O2. Further, the convex portion 54 of the connector 5 is disposed between the pair of wall portions 751 and 752 of the cap 7 when viewed from the direction of the central axis O1.

  Next, the cap 7 is moved with respect to the connector 5 along the direction of the central axis O1 in a direction in which the caps 7 approach each other. At this time, the convex portion 54 of the connector 5 is guided by the pair of wall portions 751 and 752 and moves toward the convex portion 74 of the cap 7. And the convex part 54 of the connector 5 gets over the convex part 74 of the cap 7, and the convex part 54 and the convex part 74 engage. In addition, when the convex part 54 gets over the convex part 74, the inclined surface 541 of the convex part 54 moves smoothly along the inclined surface 741 of the convex part 74, and the convex part 54 can easily get over the convex part 74. it can. In addition, after the convex portion 54 gets over the convex portion 74, the flat surface 542 of the convex portion 54 comes into contact with the flat surface 742 of the convex portion 74, thereby preventing the cap 7 from being detached from the connector 5. The state where the cap 7 is attached to 5 is maintained. Further, when the convex portion 54 gets over the convex portion 74, the operator can get a click feeling and a “click” sound is generated, so that it is easy to grasp that the cap 7 is attached to the connector 5. can do.

  Further, when the cap 7 is attached to the connector 5, the convex portion 54 is positioned between the wall portion 751 and the rib 753, and the cap 7 is prevented from rotating unintentionally with respect to the connector 5.

  When the cap 7 is attached to the connector 5, the inner tubular portion 52 of the connector 5 is inserted into the inner tubular portion 71, and the inner tubular portion 71 and the inner tubular portion 52 are fitted. In this case, since the inner peripheral portion of the inner tubular portion 71 and the outer peripheral portion of the inner tubular portion 52 are respectively provided with tapered surfaces, the inner tubular portion 71 and the inner tubular portion 52 are firmly fitted. The space between the inner cylindrical portion 71 and the inner tubular portion 52 is sealed in a liquid-tight manner.

  Thus, in this medical connector 2, the cap 7 can be attached to the connector 5 easily and reliably by simply moving the cap 7 in the direction of the central axis O <b> 1 with respect to the connector 5.

  Further, when removing the cap 7 from the connector 5, first, the cap 7 is rotated by a predetermined amount around the central axis O <b> 1 with respect to the connector 5. As a result, the positions of the convex portion 54 and the convex portion 74 are shifted so as not to overlap in the direction of the central axis O1, and the engagement between the convex portion 54 and the convex portion 74 is released.

  When the cap 7 is rotated, the convex portion 54 of the connector 5 gets over the rib 753 of the cap 7, contacts the wall portion 754, and stops at the position of the hole 76. In this way, the cap 7 is further rotated with respect to the connector 5 from the position where the engagement between the convex portion 54 and the convex portion 74 is released, that is, the position where the convex portion 54 and the hole 76 coincide. To be prevented. Further, when the convex portion 54 gets over the rib 753, the operator can feel a click and a sound of “click” is generated, so that the engagement between the convex portion 54 and the convex portion 74 is released. This can be easily grasped.

  Next, the cap 7 is moved with respect to the connector 5 along the direction of the central axis O1 in a direction away from each other. At this time, the convex portion 54 of the connector 5 is guided by the wall portion 754, moves toward the outside of the connector 5 through the hole 76, and the cap 7 is removed from the connector 5.

  Thus, in this medical connector 2, the cap 7 is rotated by a predetermined amount around the central axis O <b> 1 with respect to the connector 5 and then moved in the direction of the central axis O <b> 1. The cap 7 can be removed from 5.

  As described above, according to the medical connector 2, the operation of attaching (connecting) the cap 7 to the connector 5 and the operation of removing the cap 7 from the connector 5 can be performed easily and quickly. Similarly, the operation of connecting the connector 5 and the connector 6 and the operation of removing the connector 6 from the connector 5 can be performed easily and quickly.

  In addition, although a marker is a protrusion in this embodiment, it is not limited to this, For example, a recessed part, a coloring part, etc. may be sufficient.

Second Embodiment
FIG. 17 is a longitudinal sectional view showing a second embodiment of the medical connector of the present invention. 18 is a perspective view of the first connector of the medical connector shown in FIG. FIG. 19 is a bottom view of the cap of the medical connector shown in FIG. 20 is a longitudinal sectional view of the cap of the medical connector shown in FIG. FIG. 21 is a longitudinal sectional view showing a second embodiment of the medical connector of the present invention. 22 is a longitudinal sectional view of the second connector of the medical connector of the present invention shown in FIG.

  In the following, for convenience of explanation, the right side in FIGS. 17, 18, and 20 to 22 is “right” or “bag side”, the left side is “left” or “patient side”, and the upper side is “up” “Upper” and lower side are referred to as “lower” or “lower”.

  Moreover, the illustration of the sealing member illustrated in FIGS. 17 and 21 is omitted in other drawings.

  Hereinafter, the second embodiment will be described with a focus on differences from the first embodiment described above, and descriptions of similar matters will be omitted.

  As shown in FIGS. 17-22, in the medical connector 2 of 2nd Embodiment, the structure of the connector (1st connector) 5a which is a 1st member differs from the said 1st Embodiment, Moreover, a medical connector 2 includes a connector (third connector) 6a and a cap (second cap) 7a as a third member in addition to the connector 6 and the cap 7. That is, in the medical connector 2, both the connector 6 and the connector 6a can be detachably connected to the connector 5a, and both the cap 7 and the cap 7a are detachably connected to the connector 5a. Be able to. In addition, as for the relationship between the males and females of each member and each part, the connector 5a is male and the connector 6a and the cap 7a are female similarly to 1st Embodiment.

  First, as shown in FIGS. 17 and 18, the connector 5a is the same as the connector 5 of the first embodiment except that a male screw (first screw) 58 is provided. Thereby, the connector 6 and the cap 7 of the first embodiment can be detachably connected to the connector 5a.

  On the other hand, as shown in FIGS. 21 and 22, the connector 6 a is provided with a female screw (second screw) 67 that can be screwed into the male screw 58. Similarly, as shown in FIGS. 17 and 22, the cap 7 a is provided with a female screw (second screw) 77 that can be screwed into the male screw 58. Thereby, the connector 6a and the cap 7a can be detachably connected to the connector 5a. When attaching the cap 7a to the connector 5a, the male screw 58 and the female screw 77 are screwed together, and when connecting the connector 5a and the connector 6a, the male screw 58 and the female screw 67 are screwed together. .

  As shown in FIGS. 17, 19, and 20, a rib (third convex portion) 755 is provided on the inner peripheral portion of the outer cylindrical portion 70 of the cap 7a. The rib 755 extends in the direction of the central axis O2 of the cap 7a.

  When attaching (connecting) the cap 7a to the connector 5a, the male screw 58 and the female screw 77 are screwed together. The rib 755 has the convex portion 54 of the connector 5a formed by the rib 755 when the screwing is completed. It is arranged at the position overcoming.

  A sealing member 32 that is an O-ring is installed between the inner tubular portion 52 of the connector 5a and the inner tubular portion 71 of the cap 7a. The sealing member 32 seals the space between the inner tubular portion 52 and the inner tubular portion 71 in a liquid-tight manner. In addition, although the sealing member 32 is installed in the cap 7a side, it is not restricted to this, You may install in the connector 5a side.

  When attaching the cap 7a to the connector 5a, the cap 7a is rotated around the central axis O1 with respect to the connector 5a. Thereby, the male screw 58 and the female screw 77 are screwed together, and when the screwing is completed, the convex portion 54 gets over the rib 755. At this time, since the operator can feel a click and a sound of “click” is generated, the operator can easily grasp that the cap 7a is attached to the connector 5a.

  When removing the cap 7a from the connector 5a, the cap 7a is rotated around the central axis O1 in the opposite direction to the connector 5a. Thereby, the convex part 54 gets over the rib 755, and the screwing of the male screw 58 and the female screw 77 is released.

  The connector 6a is also provided with a rib (third convex portion) 655 and a sealing member 32 in the same manner as the cap 7a. In addition, since the effect | action at the time of connecting and removing the connector 6a to the connector 5a is the same as that of the case of the said cap 7a, the description is abbreviate | omitted.

Moreover, since the effect | action at the time of connecting and removing the connector 6 and the cap 7 to the connector 5a is the same as that of 1st Embodiment, the description is abbreviate | omitted.
According to this medical connector 2, the same effect as the first embodiment described above can be obtained.

  As mentioned above, although the medical connector of this invention was demonstrated based on embodiment of illustration, this invention is not limited to this, Each part is substituted by the thing of the arbitrary structures which can exhibit the same function. can do. Moreover, arbitrary components may be added.

  Further, the present invention may be a combination of any two or more configurations (features) of the above embodiments.

  Moreover, the relationship between each member and the male and female of each part is not limited to the said embodiment. For example, in the above-described embodiment, the connectors 5 and 5a are male, and the connectors 6 and 6a and the caps 7 and 7a are female. However, the present invention is not limited to this. For example, the connectors 5, 5a are female, the connectors 6, 6a and caps 7 and 7a may be male. Similarly, regarding the screw, the male-female relationship may be the reverse of that of the above embodiment.

  In the first embodiment, the medical connector includes the connectors 5 and 6 and the cap 7. However, the present invention is not limited thereto. It is good also as a connector for medical supplies, and what is comprised by the connector 5 and the cap 7 is good also as a medical connector. That is, the medical connector has a first member constituted by the first connector and a second member constituted by the second connector or the first cap detachably connected to the first member. If you do.

  In the second embodiment, the medical connector includes the connectors 5 and 5a, the connectors 6 and 6a, and the caps 7 and 7a. However, the present invention is not limited thereto. And 6a may be used as the medical connector, and the connector 5 and the caps 7 and 7a may be used as the medical connector. That is, the medical connector includes a first member constituted by a first connector, a second connector detachably connected to the first member or a second member constituted by a first cap, What is necessary is just to have the 3rd member comprised by the 3rd connector or 2nd cap connected detachably with the 1st member.

  In the above embodiment, the peritoneal dialysis set can be used for a continuous portable peritoneal dialysis method among the peritoneal dialysis methods. However, the present invention is not limited to this, for example, peritoneal dialysis solution. It can also be used for automated peritoneal dialysis.

  Moreover, in the said embodiment, the connector for peritoneal dialysis was mentioned as an example as a medical connector, However In this invention, it can use for another use not only in this.

DESCRIPTION OF SYMBOLS 1 Peritoneal dialysis set 2 Medical connector 31, 32 Sealing member 4 Dialysis fluid bag (dialysis fluid container)
4a Bulkhead 5, 5a Connector 51 Connection portion 52 Inner tubular portion 53 Outer tubular portion 54 Convex portion 541 Inclined surface 542 Flat surface 55 Large diameter portion 56 Marker 57 Groove 58 Male screw 6, 6a Connector 60 Outer cylindrical portion 601 Rib 61 Inside Cylindrical part 62 Large diameter part 63 Marker 652 Wall part 655 Rib 67 Female screw 69 Connection part 7, 7a Cap 70 Outer cylindrical part 701 Rib 71 Inner cylindrical part 72 Large diameter part 73 Marker 74 Convex part 741 Inclined surface 742 Flat Surface 751, 752, 754 Wall 753, 755 Rib 76 Hole 77 Female thread 11 Bag side tube 16 Roller clamp 17 Connector 18 Transfer tube (patient side tube)
O1, O2 center axis

Claims (9)

A first member composed of a first connector;
A second member constituted by a second connector or a second cap that is detachably connected to the first member;
The first member has a first protrusion,
The second member has a second convex portion that can be engaged with the first convex portion,
When connecting the first member and the second member, if the second member is moved in the direction of the central axis of the first member with respect to the first member, the first protrusion and the first member When the second member engages and the second member is removed from the first member, the second member is rotated by a predetermined amount around the central axis with respect to the first member. The engagement between the first convex portion and the second convex portion is released ,
A guide part for guiding the first convex part to the second convex part when connecting the first member and the second member;
The guide portion is a pair of wall portions provided on the second member. When the first member and the second member are connected, the first convex portion is the pair of wall portions. A medical connector characterized by being disposed between the two . A first member composed of a first connector;
A second member constituted by a second connector or a second cap that is detachably connected to the first member;
The first member has a first protrusion,
The second member has a second convex portion that can be engaged with the first convex portion,
When connecting the first member and the second member, if the second member is moved in the direction of the central axis of the first member with respect to the first member, the first protrusion and the first member When the second member engages and the second member is removed from the first member, the second member is rotated by a predetermined amount around the central axis with respect to the first member. The engagement between the first convex portion and the second convex portion is released ,
The first convex portion has a first inclined surface on the second member side in a state where the first member and the second member are connected,
When connecting the first member and the second member, the second convex portion moves along the first inclined surface with respect to the first convex portion, and the first convex portion Medical connector characterized by overcoming The medical connector according to claim 2 , further comprising a guide portion that guides the first convex portion to the second convex portion when connecting the first member and the second member. The guide portion is a pair of wall portions provided on the second member. When the first member and the second member are connected, the first convex portion is the pair of wall portions. The medical connector of Claim 3 arrange | positioned between. When removing the second member from the first member, the second member further moves from a position where the engagement between the first convex portion and the second convex portion is released with respect to the first member. The medical connector according to any one of claims 1 to 4 , further comprising a rotation prevention unit that prevents the rotation. A first member composed of a first connector;
A second member constituted by a second connector or a second cap that is detachably connected to the first member;
The first member has a first protrusion,
The second member has a second convex portion that can be engaged with the first convex portion,
When connecting the first member and the second member, if the second member is moved in the direction of the central axis of the first member with respect to the first member, the first protrusion and the first member When the second member engages and the second member is removed from the first member, the second member is rotated by a predetermined amount around the central axis with respect to the first member. The engagement between the first convex portion and the second convex portion is released ,
When removing the second member from the first member, the second member further moves from a position where the engagement between the first convex portion and the second convex portion is released with respect to the first member. A medical connector characterized by having a rotation preventing portion for preventing rotation . The medical connector according to claim 5 or 6 , wherein the rotation preventing portion is a contact portion that is provided on the second member and contacts the first convex portion. The second convex portion has a second inclined surface on the first member side in a state where the first member and the second member are connected,
When connecting the first member and the second member, the first convex portion moves along the second inclined surface with respect to the second convex portion, and the second convex portion The medical connector according to any one of claims 1 to 7 , wherein the medical connector is overcome. A first member composed of a first connector;
A second member constituted by a second connector or a second cap that is detachably connected to the first member;
The first member has a first protrusion,
The second member has a second convex portion that can be engaged with the first convex portion,
When connecting the first member and the second member, if the second member is moved in the direction of the central axis of the first member with respect to the first member, the first protrusion and the first member When the second member engages and the second member is removed from the first member, the second member is rotated by a predetermined amount around the central axis with respect to the first member. The engagement between the first convex portion and the second convex portion is released ,
A third member constituted by a third connector or a third cap detachably connected to the first member;
The first member has a first screw;
The third member has a third protrusion that can be engaged with the first protrusion and a second screw that can be screwed into the first screw.
When connecting the first member and the third member, if the third member is rotated around the central axis with respect to the first member, the first screw and the second screw Are screwed together, and the first convex portion climbs over the third convex portion, and when the third member is removed from the first member, the third member is moved relative to the first member with respect to the central axis. When rotating around in the opposite direction to the connection, the first convex portion gets over the third convex portion, and the screwing of the first screw and the second screw is released,
The medical connector , wherein the third convex portion is a rib extending in an axial direction of the third member .

Images