JP2018157919A - cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a cap where a connection part is not largely protruded sideward in a state where a port part is covered.SOLUTION: A cap 110 includes: a screw-type cap body 111 for covering a port part 151 being an attachment object; a ring part 112 to be removably and rotatably attached to a trunk of the port part 151; and a connection part 113 for connecting the cap body 111 to the ring part 112. The ring part 112 is attached to the trunk of the port part 151 and the port part 151 is covered by the cap body 111. In a plane view from a side of a top surface 123 of the cap body 111 in this state, the connection part 113 includes: a first bending part 115 positioned on a side of the cap body 111; a second bending part 116 positioned on a side of the ring part 112; and an intermediate part 117 positioned between the first bending part 115 and the second bending part 116 and extending along an outer periphery of the port part 151.SELECTED DRAWING: Figure 3

Description

  The present disclosure relates to medical device caps.

  Generally, a fluid circuit such as a blood circuit is provided with a connector for connecting to another fluid circuit or the like. In general, an unused connector is attached with a cap that covers the port portion of the connector in order to prevent outflow of liquid, intrusion of dust, and the like. When the connector is used, the cap is removed from the port portion. When the connector is used, the cap is attached to the port portion again. The screw-type cap is less prone to inadvertent dropping than the snap-type cap, and is excellent in terms of safety.

  On the other hand, in order to prevent the cap removed from the port portion from being dropped or lost, the cap and the connector are connected. In the case of a screw-type cap, the cap needs to be able to rotate freely with respect to the port portion. For this reason, a cap has been proposed in which a ring part is rotatably attached to a body part of a port part, and the ring part and the main body of the cap are connected by a connecting part (see, for example, Patent Document 1). In general, the connecting portion is as short as possible so as not to get in the way.

Japanese Patent Laying-Open No. 2015-54137

  However, the conventional cap has a problem that when the port portion is covered, the connecting portion largely protrudes sideways from the cap body. The connecting portion protruding greatly to the side not only disturbs the operation, but also causes damage to or damage to the packaging of the fluid circuit. In addition, a force is intensively applied to the connecting portion that protrudes greatly during storage and transportation, which may cause damage to the connecting portion.

  On the other hand, if the length of the connecting portion is made shorter and shorter, the operability is lowered, and finally the cap cannot be removed from the port portion. Even if the length of the connecting portion is set to the shortest length that can be removed from the port portion at the expense of the operability of the cap, it is difficult to eliminate the state where the connecting portion protrudes greatly.

  Similar problems occur not only in fluid circuits but also in medical devices having connectors. The same problem occurs not only in medical devices but also in other devices having connectors.

  The subject of this indication is enabling it to realize the cap which a connection part does not protrude greatly to the side in the state where the port part was covered.

  One aspect of the cap of the present disclosure includes a screw-type cap body that covers a port portion to be attached, a ring portion that can be detachably and rotatably attached to a body portion of the port portion, and the cap body and the ring. And connecting the ring portion to the trunk portion of the port portion, covering the port portion with the cap body, and when viewed in plan from the top side of the cap body, the connecting portion is: Located between the first bent portion located on the cap body side, the second bent portion located on the ring portion side, the first bent portion and the second bent portion, and along the outer periphery of the port portion And an intermediate portion extending.

  By setting it as such a structure, a connection part can be extended along the outer periphery of a port part, and can be prevented from jumping out greatly to the outer side of attachment object.

  In one aspect of the cap, the distance between the cap body and the first bent portion is 1/3 or less and 1/10 or more of the length of the connecting portion, and the distance between the ring portion and the second bent portion. Can be 1/3 or less and 1/10 or more of the length of the connecting portion. By setting it as such a structure, the protrusion to the side of a connection part can be made very small, ensuring the operativity of a cap.

  In one aspect of the cap, the connecting portion has a thin portion that is thinner than other portions of the connecting portion, and the thin portion is attached to the trunk portion of the port portion by the ring portion, and the port portion is covered by the cap body. When it is done, it can be bent. By doing in this way, a bending part can be easily provided in the predetermined position of a connection part.

  In one aspect of the cap, when the ring part is attached to the body part of the port part and the port part is covered with the cap body, a straight line connecting the position where the connecting part is connected to the cap body and the center of the cap body, The angle formed by the straight line connecting the position where the coupling portion is connected to the ring portion and the center of the cap body can be 30 ° or more and 270 ° or less. By setting it as such a structure, the protrusion to the side of a connection part can be made very small, ensuring the operativity of a cap.

  One aspect of the medical connector of the present disclosure includes the cap of the present disclosure and a connector main body to which a ring portion is attached. By adopting such a configuration, it is possible to realize a connector in which the cap can be easily operated and the connecting portion is not protruded to the side.

  In one aspect of the medical connector, the cap can be attached to the connector main body so that the top surface of the cap main body and the opening of the port portion are on the same side in a state where the connecting portion is not twisted. With such a configuration, when the cap body is opened, the cap body is pushed out to the side of the port portion, so that the operation of the cap is facilitated. Moreover, the twist of a connection part can be made small and a connection part can be hard to fracture | rupture.

  According to the cap of the present disclosure, it is possible to prevent the connecting portion from protruding greatly to the side while the port portion is covered.

It is a perspective view which shows the cap which concerns on one Embodiment. It is a perspective view which shows the state which attached the cap which concerns on one Embodiment to a connector, and opened the port part. It is a perspective view which shows the state which attached the cap which concerns on one Embodiment to a connector, and covered the port part. It is a top view which shows the state which attached the cap which concerns on one Embodiment to a connector, and covered the port part. It is sectional drawing in the VV line of FIG. It is a perspective view which shows the state attached to the connector with the top | upper surface of the cap which concerns on one Embodiment facing up. It is a perspective view which shows the conventional connector with a cap.

  As shown in FIGS. 1 to 5, the cap 110 according to the present embodiment is detachably attached to a screw-type cap body 111 that can be attached to the port portion 151 of the connector 150 and can be covered, and a body portion of the port portion 151. And a ring portion 112 that can be rotatably mounted, and a connecting portion 113 that connects the cap body 111 and the ring portion 112.

  As shown in FIGS. 2 and 3, in a state where the ring portion 112 is attached to the body portion of the port portion 151 of the connector 150 and the port portion 151 is covered with the cap body 111, the connecting portion 113 is connected to the top of the cap body 111. When viewed from the surface 123 side, the two bent portions 115 are provided.

  The connector 150 to be attached is not particularly limited, but can be a medical female connector. The connector 150 has a cylindrical port portion 151 that receives a male connector, and a lock thread 153 is provided on the outer periphery of the port portion 151.

  The cap main body 111 of this embodiment has a cylindrical shape having a top surface 123, and a thread 121 that engages with the thread 153 of the port portion 151 is provided on the inner surface. In addition, a protrusion 125 protruding in the axial direction is provided inside the cap body 111. The protrusion 125 is a male taper and fits into the opening of the port portion 151. The outer peripheral surface of the protrusion 125 and the inner peripheral surface of the opening of the port portion 151 can be configured to be in close contact with each other in order to ensure liquid tightness. The protrusion 125 may be provided as necessary, and the inner surface of the top surface 123 may be a flat surface.

  The cap body 111 is gripped with a finger or the like and rotated to engage the screw thread 121 with the screw thread 153 of the port portion 151, attach to the port portion 151, close the opening of the port portion 151, and close the lid. can do. Further, by rotating in the reverse direction, the cap body 111 can be removed from the port portion 151 and the port portion 151 can be opened. In a normal case, the cap body 111 can be locked and covered with the port 151 by turning the cap body 111 about 1/3 to 3 rotations, and the port body can be locked about 1/3 to 3 rotations in the reverse direction. It can be removed from the portion 151 to be in an open state. The outer peripheral surface of the cap body 111 can be provided with irregularities or the like in order to facilitate gripping.

  The ring portion 112 has an inner diameter slightly larger than the outer diameter of the body portion of the port portion 151, and can be freely rotated when attached to the body portion of the port portion 151. Moreover, it is preferable that the ring part 112 has an inner diameter slightly smaller than the outer diameter of the screw thread 153 provided in the port part 151 from the viewpoint of preventing the dropout. In the case of a female luer connector having a normal thread, the inner diameter of the ring portion 112 is preferably 80% or more, more preferably 85% or more, even more preferably, of the outer diameter of the thread 153 from the viewpoint of free rotation. Is 92% or more. Further, from the viewpoint of making it difficult to drop off, the inner diameter of the ring portion 112 is preferably 99.9% or less, more preferably 99% or less, and still more preferably 98% or less of the outer diameter of the thread 153.

  The ring portion 112 can be a ring that is completely connected to the entire circumference, but can also be configured with a cut in order to facilitate the attachment of the port portion 151 to the trunk portion. Moreover, it can also be set as the C-ring shape which has a notch.

  The connecting portion 113 is a plate-like member that connects the cap body 111 and the ring portion 112. As shown in FIG. 1, the connecting portion 113 is provided with a first bend forming portion 131 on the cap body 111 side and a second bend forming portion 132 on the ring portion 112 side. When the cap 110 is used, the first bend forming portion 131 becomes the first bend portion 115, and the second bend forming portion 132 becomes the second bend portion 116. In the present embodiment, the first bend forming portion 131 and the second bend forming portion 132 are thin portions that are thinner than other portions of the connecting portion 113.

  As shown in FIGS. 4 and 5, the ring portion 112 of the cap 110 of this embodiment is attached to the body portion of the port portion 151 of the connector 150, the port portion 151 is covered with the cap body 111, and the port portion 151 is In the closed state, the connecting portion 113 bends in the first bend forming portion 131 and the second bend forming portion 132, and the first bent portion 115 on the cap body 111 side and the second bend on the ring portion 112 side. The bent portion 116 is formed. The first bent portion 115 and the second bent portion 116 do not overlap each other when viewed from the top surface 123 side of the cap body 111. Further, the position where the connecting portion 113 is connected to the cap body 111 and the position where the connecting portion 113 is connected to the ring portion 112 do not overlap. As a result, the intermediate portion 117 between the first bent portion 115 and the second bent portion 116 of the connecting portion 113 is located on the outer periphery of the cap main body 111 and thus the outer periphery of the port portion 151 covered by the cap main body 111. Therefore, the protruding length of the connecting portion 113 from the connector 150 is determined by the position of the bend forming portion 131. Therefore, even if the length of the connecting portion 113 is increased in order to improve the operability of the cap body 111, the connecting portion 113 does not jump out to the outside of the connector 150.

  On the other hand, when a conventional cap as shown in FIG. 7 is attached to the connector 150, the position where the connecting portion 513 is connected to the cap main body 511 and the position where the connecting portion 513 is connected to the ring portion 512 substantially overlap. The connecting portion 513 does not follow the outer periphery of the port portion 151. For this reason, if the length of the connection part 513 is lengthened, the protrusion length of the connection part 113 will become large in proportion to it.

  In the present disclosure, when viewed in plan from the top surface 123 side, an angle formed by the direction in which the first bent portion 115 extends and the direction in which the intermediate portion 117 extends (the bent angle of the first bent portion), and the first The angle formed by the direction in which the second bent portion 116 extends and the direction in which the intermediate portion 117 extends (the bent angle of the second bent portion) is preferably 120 ° or less, and more preferably 90 ° or less. By doing so, the intermediate portion 117 can extend along the outer periphery of the cap body 111 and the outer periphery of the port portion 151. Further, from the viewpoint of preventing the first bent portion 115 and the second bent portion 116 from damaging the bag, the bent angle of the first bent portion and the bent angle of the second bent portion are each preferably 20 °. More preferably, it is 40 ° or more. The bending angle of the first bent portion and the bent angle of the second bent portion can be the same, but may be different.

  From the viewpoint of minimizing the protrusion length of the coupling portion 113 from the cap body 111, the first bending formation portion 131 on the cap body 111 side is as close as possible to the cap body 111, and the second bending formation on the ring portion 112 side is performed. The portion 132 is preferably provided as close to the ring portion 112 as possible. Specifically, the distance between the first bend forming part 131 and the cap body 111 and the second bend forming part 132 and the ring part 112 is preferably 1/3 or less of the length of the connecting part 113, respectively. Preferably it is 1/4 or less, More preferably, it is 1/5 or less. Although depending on the size of the cap body 111 and the length of the connecting portion 113, as specific numerical values, when the outer diameter of the cap body 111 is about 10 mm, it is preferably 5 mm or less, more preferably 4 mm or less. From the viewpoint of workability and strength, the distance between the first bent forming portion 131 and the cap body 111 and the second bent forming portion 132 and the ring portion 112 is preferably the length of the connecting portion 113, preferably 1 / It is 10 or more, more preferably 1/8 or more. Although depending on the size of the cap body 111 and the length of the connecting portion 113, for example, when the outer diameter of the cap body 111 is about 10 mm, it is preferably 1 mm or more, more preferably 2 mm or more.

  The distance between the first bend forming portion 131 and the cap body 111 and the distance between the second bend forming portion 132 and the ring portion 112 can be the same, but may be different from each other. Good.

  The length of the connecting portion 113 is not particularly limited. However, from the viewpoint of operability of the cap body 111 and from the viewpoint of preventing the connecting portion 113 from being twisted and breaking, the outer peripheral length of the cap body 111 is preferably 1/5. Above, more preferably 1/4 or more, and still more preferably 1/3 or more. Further, from the viewpoint of not obstructing the cap body 111 when it is removed from the port portion 151, the circumference of the cap body 111 is preferably 1 time or less, more preferably 3/4 or less, and even more preferably 2 / 3 or less.

  From the viewpoint of reducing the twist of the connecting portion 113, a straight line connecting the position where the connecting portion 113 is connected to the cap body 111 and the center of the cap body 111 in a state where the port portion 151 is covered, and the connecting portion 113 is The angle formed between the position connected to the ring portion 112 and the straight line connecting the center of the cap body 111 is preferably 30 ° or more, more preferably 45 ° or more, and even more preferably 60 ° or more. Further, from the viewpoint of preventing the cap main body 111 from being obstructed when the cap main body 111 is removed from the port portion 151, the position where the connecting portion 113 is connected to the cap main body 111 and the cap main body 111 in a state where the port portion 151 is covered. The angle formed by the straight line connecting the center of the ring portion and the straight line connecting the position where the connecting portion 113 is connected to the ring portion 112 and the center of the cap body 111 is preferably 270 ° or less, more preferably 180 ° or less, and still more preferably May be 120 ° or less.

  No bent portion is provided between the first bent portion 115 and the second bent portion 116, and the intermediate portion 117 extends in a linear or smooth curve when viewed from the top surface 123 side. It can be in the state. However, one or more bent portions may be formed between the first bent portion 115 and the second bent portion 116. By providing a bent portion in the intermediate portion 117, the intermediate portion 117 can extend along the outer periphery of the port portion 151 even if the bending angle of each bent portion is increased.

  1 shows an example in which the surface on the same side as the top surface 123 of the cap body 111 is cut and a thin portion is provided, but the surface on the opposite side to the top surface 123 is cut off. Both sides may be cut off. The shape of the thin portion can be V-shaped, U-shaped, or U-shaped. Moreover, it can also be set as a thin streak-like notch. Furthermore, if the first bent portion 115 and the second bent portion 116 can be formed at predetermined positions in a use state by a thermal processing or the like with a material that easily stores the crease shape, a clear bent forming portion 131 such as a thin portion can be formed. It does not have to be provided.

  As shown in FIG. 1, the connecting portion 113 is preferably connected near the opening end of the cap body 111. By doing in this way, when connecting the cap main body 111, the connection part 113 becomes difficult to get in the way. Moreover, the length of the connection part 113 can be shortened compared with the case where it is connected to another position. However, the connecting part 113 may be connected to another part of the cap body 111.

  The cap 110 of the present embodiment can be attached to the port portion 151 so that the opening of the port portion 151 and the opening of the cap body 111 are both on the upper side in a state where the connecting portion 113 is not twisted. Further, as shown in FIG. 5, it is possible to attach to the port portion 151 so that the opening of the port portion 151 and the top surface 123 of the cap body 111 are both on the upper side in a state where the connecting portion 113 is not twisted. . As described above, when the port 151 and the top surface 123 of the cap body 111 are mounted on the same side, the port 151 and the cap body 111 are both on the upper side. Compared with the case where it attaches to, it is necessary to twist the cap main body 111 more and to make it fit with the port part 151, As a result, the elastic force of the connection part 113 becomes larger. Therefore, when the cap body 111 is removed from the port portion 151, the cap body 111 is easily moved to a position away from the port portion 151 due to the elastic force of the connecting portion 113. For this reason, when it is set to the open state, the operation of attaching another connector or the like to the port portion 151 is facilitated. As a result, the operation of the connector 150 becomes easier.

  Further, since the twist of the connecting portion 113 is reduced compared to the case where the opening of the port portion 151 and the opening of the cap body 111 are on the same side, there is an advantage that the connecting portion 113 is not easily broken.

  The cap 110 of the present embodiment is preferably formed using a material that is soft to some extent from the viewpoint of securing the deformability of the connecting portion 113. Specifically, it is made of relatively soft resin materials such as polyethylene, polypropylene, and polyvinyl chloride, elastomer materials such as styrene, olefin, polyester, and polyurethane, and rubber materials such as isoprene rubber, butyl rubber, and silicone rubber. can do.

  The cap body 111, the ring part 112, and the connecting part 113 are preferably integrally formed as a whole from the viewpoint of strength and ease of formation. However, a plurality of members molded separately can be assembled.

  In the present embodiment, an example is shown in which the connector 150 is attached to the end of a tube 160 used in a blood circuit or the like. However, the connector 150 is not limited to such a connector. For example, the connector 150 may be a connector that is used by being attached to another male connector or a female connector, and is integrated with medical devices such as a bottle, a syringe, a pump, and a dialyzer. It can also be a connector or the like. Further, the connector is not limited to a medical connector, and may be a connector used for other purposes. The connector 150 can be formed of a resin material that is usually used.

  The cap of the present disclosure is useful as a cap that is attached to a medical connector or the like without the connecting portion protruding greatly to the side in a state where the port portion is covered.

110 Cap 111 Cap body 112 Ring portion 113 Connection portion 115 First bent portion 116 Second bent portion 117 Intermediate portion 121 Thread 123 Top surface 125 Projection 131 Bend forming portion 150 Connector 151 Port portion 153 Thread

Claims (6)

Screw-type cap body that covers the port part to be installed;
A ring portion that can be detachably and rotatably attached to the body portion of the port portion;
A coupling portion for coupling the cap body and the ring portion;
When the ring part is attached to the body part of the port part, the port part is covered with the cap body, and the plan part is viewed from the top side of the cap body, the connecting part is placed on the cap body side. Located between the first bent portion, the second bent portion positioned on the ring portion side, the first bent portion and the second bent portion, and along the outer periphery of the port portion A cap having an intermediate portion extending in a vertical direction. The distance between the cap body and the first bent portion is 1/3 or less, 1/10 or more of the length of the connecting portion,
2. The cap according to claim 1, wherein a distance between the ring portion and the second bent portion is 1/3 or less and 1/10 or more of a length of the connecting portion. The connecting portion has a thin portion that is thinner than other portions of the connecting portion,
3. The cap according to claim 1, wherein the thin portion becomes the bent portion when the ring portion is attached to a body portion of the port portion and the port portion is covered with the cap body.   When the ring portion is attached to the body portion of the port portion and the port portion is covered with the cap body, the connecting portion is connected to the cap body and a straight line connecting the center of the cap body. The angle formed by the straight line connecting the position where the connecting portion is connected to the ring portion and the center of the cap body is 30 ° or more and 270 ° or less, according to any one of claims 1 to 3. The described cap. The cap according to any one of claims 1 to 4,
A medical connector comprising a connector main body to which the ring portion is attached.   The said cap is attached to the said connector main body so that the top | upper surface of the said cap main body and the opening of the said port part may become the same side in the state in which the said connection part does not have a twist. Medical connector.

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