JP6930163B2 - cap - Google Patents

Description

The present disclosure relates to caps for medical devices.

A fluid circuit such as a blood circuit is generally provided with a connector for connecting to another fluid circuit or the like. In general, a cap that covers the port portion of the connector is attached to the unused connector in order to prevent the outflow of liquid and the intrusion of dust. When using the connector, the cap is removed from the port, and when it is finished, the cap is reattached to the port. Compared to snap-type caps, screw-type caps are less likely to fall off accidentally and are superior 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. Therefore, a cap has been proposed in which a ring portion is rotatably attached to the body portion of the port portion and the ring portion and the main body of the cap are connected by a connecting portion (see, for example, Patent Document 1). The joints are generally as short as possible so that they do not get in the way.

JP 2015-54137

However, the conventional cap has a problem that when the port portion is covered, the connecting portion greatly protrudes laterally from the cap body. The connection part that protrudes greatly to the side not only interferes with the operation, but also causes damage or damage to the packaging of the fluid circuit. In addition, a concentrated force is 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 shortened, the operability is deteriorated, 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 in which the connecting portion protrudes greatly.

Similar problems occur not only in fluid circuits but also in medical devices having connectors. Further, the same problem occurs not only in medical devices but also in other devices having a connector.

An object of the present disclosure is to realize a cap in which the connecting portion is large and does not protrude to the side when the port portion is covered.

One aspect of the cap of the present disclosure is a screw type cap body that covers the port portion to be attached, a ring portion that can be detachably and rotatably attached to the body portion of the port portion, and a cap body and a ring. When the ring portion is attached to the body of the port portion, the port portion is covered with the cap body, and the connecting portion is viewed in a plan view from the top surface side of the cap body, the connecting portion is provided with a connecting portion for connecting the portions. It is located between the first bent portion located on the cap body side, the second bent portion located on the ring portion side, and the first bent portion and the second bent portion, and is located along the outer periphery of the port portion. Has an intermediate portion extending from the surface.

With such a configuration, it is possible to prevent the connecting portion from extending along the outer circumference of the port portion and not greatly protruding to the outside of the attachment target.

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. With such a configuration, it is possible to make the protrusion of the connecting portion to the side very small while ensuring the operability of the cap.

In one aspect of the cap, the connecting portion has a thin portion that is thinner than the other portion of the connecting portion, and the thin portion attaches the ring portion to the body portion of the port portion and covers the port portion by the cap body. It can be made to be a bent part when it is used. By doing so, the bent portion can be easily provided at a predetermined position of the connecting portion.

In one aspect of the cap, when the ring portion is attached to the body portion of the port portion and the port portion is covered with the cap body, a straight line connecting the position where the connecting portion is connected to the cap body and the center of the cap body is formed. The angle formed by the position where the connecting portion is connected to the ring portion and the straight line connecting the center of the cap body can be 30 ° or more and 270 ° or less. With such a configuration, it is possible to make the protrusion of the connecting portion to the side very small while ensuring the operability of the cap.

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

In one aspect of the medical connector, the cap can be attached to the connector body so that the top surface of the cap 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 becomes easy. Further, the twist of the connecting portion can be reduced to prevent the connecting portion from breaking.

According to the cap of the present disclosure, it is possible to prevent the connecting portion from protruding significantly to the side with the port portion 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 which attached to the connector with the top surface of the cap which concerns on one Embodiment face up. It is a perspective view which shows the conventional connector with a cap.

As shown in FIGS. 1 to 5, the cap 110 of the present embodiment can be attached to and detached from the screw type cap body 111 which can be attached to the port portion 151 of the connector 150 and can be covered, and the body portion of the port portion 151. It also includes a ring portion 112 that can be rotatably attached, 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. It has two bent portions 115 when viewed in a plan view from the surface 123 side.

The connector 150 to be attached is not particularly limited, but may be a medical scalpel connector. The connector 150 has a tubular port portion 151 that receives a male connector, and a thread 153 for locking is provided on the outer periphery of the port portion 151.

The cap body 111 of the present embodiment has a tubular shape having a top surface 123, and is provided with a thread 121 on the inner surface that engages with the thread 153 of the port portion 151. Further, a protrusion 125 that protrudes in the axial direction is provided inside the cap body 111. The protrusion 125 has a male taper and fits inside 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 liquidtightness. The protrusion 125 may be provided as needed, and the inner surface of the top surface 123 may be a flat surface.

The cap body 111 is attached to the port portion 151 by engaging the screw thread 121 with the screw thread 153 of the port portion 151 by grasping and rotating the cap body 111 with a finger or the like, closing the opening of the port portion 151, and closing the lid. can do. Further, by rotating in the opposite 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 to the port portion 151 by rotating it about 1/3 to 3 times to cover it, and by rotating it in the opposite direction by about 1/3 to 3 turns, the port can be locked. It can be removed from the portion 151 to open it. The outer peripheral surface of the cap body 111 may 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. Further, from the viewpoint of preventing the ring portion 112 from falling off, it is preferable that the ring portion 112 has an inner diameter slightly smaller than the outer diameter of the screw thread 153 provided on the port portion 151. In the case of a female connector having a normal thread, the inner diameter of the ring portion 112 is preferably 80% or more, more preferably 85% or more, more preferably 85% or more of the outer diameter of the thread 153 from the viewpoint of free rotation. Is over 92%. Further, from the viewpoint of making it difficult to fall off, the inner diameter of the ring portion 112 is preferably 99.9% or less, more preferably 99% or less, still more preferably 98% or less of the outer diameter of the thread 153.

The ring portion 112 may be a ring whose entire circumference is completely connected, but it may also have a configuration in which a cut is provided in order to facilitate attachment of the port portion 151 to the body portion. It can also be a C-ring with a notch.

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

As shown in FIGS. 4 and 5, the ring portion 112 of the cap 110 of the present 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 attached. When the closed state is set, the connecting portion 113 is bent at the first bending forming portion 131 and the second bending forming portion 132, and the first bending portion 115 on the cap body 111 side and the second bending portion 112 side are bent. The bent portion 116 of the above is formed. The first bent portion 115 and the second bent portion 116 do not overlap each other when viewed in a plan view from the top surface 123 side of the cap body 111. Further, the position where the connecting portion 113 is connected to the cap main body 111 does not overlap with the position where the connecting portion 113 is connected to the ring portion 112. 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 formed on the outer circumference of the cap main body 111 and thus on the outer circumference of the port portion 151 covered by the cap main body 111. Since it extends along it, the protruding length of the connecting portion 113 from the connector 150 is determined by the position of the bending forming portion 131. Therefore, even if the length of the connecting portion 113 is increased in order to improve the operability of the cap main body 111, the connecting portion 113 does not protrude significantly to the outside of the connector 150.

On the other hand, when the 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 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 run along the outer periphery of the port portion 151. Therefore, when the length of the connecting portion 513 is increased, the protruding length of the connecting portion 113 increases proportionally.

In the present disclosure, when viewed in a plan view from the top surface 123 side, the angle formed by the direction in which the first bent portion 115 extends and the direction in which the intermediate portion 117 extends (the bending angle of the first bent portion), and the first The angle formed by the extending direction of the bent portion 116 of 2 and the extending direction of the intermediate portion 117 (bending angle of the second bent portion) is preferably 120 ° or less, more preferably 90 ° or less, respectively. By doing so, the intermediate portion 117 can be extended along the outer circumference of the cap main body 111 and the outer circumference 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 bending angle of the first bending portion and the bending angle of the second bending portion are preferably 20 °, respectively. Above, more preferably 40 ° or more. The bending angle of the first bending portion and the bending angle of the second bending portion can be the same, but may be different.

From the viewpoint of minimizing the protrusion length of the connecting portion 113 from the cap main body 111, the first bending forming portion 131 on the cap main body 111 side is made as close as possible to the cap main body 111, and the second bending forming portion on the ring portion 112 side is formed. It is preferable that the portion 132 is provided as close to the ring portion 112 as possible. Specifically, the distance between the first bending forming portion 131, the cap body 111, the second bending forming portion 132, and the ring portion 112 is preferably 1/3 or less of the length of the connecting portion 113, respectively. It is preferably 1/4 or less, more preferably 1/5 or less. Although it depends on the size of the cap body 111 and the length of the connecting portion 113, as a specific numerical value, 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 distances between the first bending forming portion 131, the cap body 111, the second bending forming portion 132, and the ring portion 112 are each one of the length of the connecting portion 113, preferably 1 /. It is 10 or more, more preferably 1/8 or more. Although it depends 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 bending forming portion 131 and the cap body 111 and the distance between the second bending 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, but from the viewpoint of operability of the cap main body 111 and from the viewpoint of avoiding breakage due to a large twist of the connecting portion 113, the outer peripheral length of the cap main body 111 is preferably 1/5. As mentioned above, it is more preferably 1/4 or more, still more preferably 1/3 or more. Further, from the viewpoint of not getting in the way when the cap body 111 is removed from the port portion 151, the peripheral length of the cap body 111 is preferably 1 times or less, more preferably 3/4 or less, still more preferably 2 /. It is 3 or less.

From the viewpoint of reducing the twist of the connecting portion 113, the connecting portion 113 has a straight line connecting the position where the connecting portion 113 is connected to the cap main body 111 and the center of the cap main body 111 with the port portion 151 covered. The angle formed by the straight line connecting the position connected to the ring portion 112 and the center of the cap body 111 may be preferably 30 ° or more, more preferably 45 ° or more, and further preferably 60 ° or more. Further, from the viewpoint of not getting in the way 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 with the port portion 151 covered. The angle formed by the straight line connecting the center of the cap body 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, still more preferable. 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 so as to form a straight line or a smooth curve when viewed in a plan view from the top surface 123 side. Can be in the state of being. However, one or more bent portions may be formed between the first bent portion 115 and the second bent portion 116. By providing the bending portion in the intermediate portion 117, the intermediate portion 117 can be extended along the outer circumference of the port portion 151 even if the bending angle of each bending portion is increased.

Further, FIG. 1 shows an example in which the surface of the cap body 111 on the same side as the top surface 123 is scraped to provide a thin portion, but the surface opposite to the top surface 123 may be scraped. , Both sides may be scraped. The shape of the thin portion can be V-shaped, U-shaped, U-shaped, or the like. It can also be a fine streak-like notch. Further, if the first bent portion 115 and the second bent portion 116 can be formed at predetermined positions in the used state by heat processing or the like with a material that easily memorizes 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 open end of the cap body 111. By doing so, the connecting portion 113 is less likely to get in the way when gripping the cap body 111. Further, the length of the connecting portion 113 can be shortened as compared with the case where the connecting portion 113 is connected to another position. However, the connecting portion 113 may be connected to another portion of the cap main 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 main 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 can be attached to the port portion 151 so that the opening of the port portion 151 and the top surface 123 of the cap main body 111 are both on the upper side in a state where the connecting portion 113 is not twisted. .. In this way, when the port portion 151 is attached so that the opening of the port portion 151 and the top surface 123 of the cap main body 111 are on the same side, the opening of the port portion 151 and the opening of the cap main body 111 are both on the upper side. It is necessary to twist the cap body 111 more to fit the port portion 151 as compared with the case where the cap body 111 is attached to the port portion 151, and as a result, the elastic force of the connecting portion 113 becomes larger. Therefore, when the cap body 111 is removed from the port portion 151, the cap body 111 tends to move to a position away from the port portion 151 due to the elastic force of the connecting portion 113. Therefore, it does not get in the way when it is opened, and the operation of attaching another connector or the like to the port portion 151 becomes easy. As a result, the operation of the connector 150 becomes easier.

Further, as compared with the case where the opening of the port portion 151 and the opening of the cap main body 111 are on the same side, the twist of the connecting portion 113 is smaller, so that there is an advantage that the connecting portion 113 is less likely to break.

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

It is preferable that the cap body 111, the ring portion 112, and the connecting portion 113 are integrally molded as a whole from the viewpoint of strength and facilitation of formation. However, it is also possible to assemble a plurality of separately molded members.

In this embodiment, an example is shown in which the connector 150 is attached to the end of a tube 160 used for a blood circuit or the like. However, the connector 150 is not limited to such a connector, and for example, it can be used by attaching it to another male connector or female connector, or it can be integrated with a medical device 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 commonly used resin material or the like.

The cap of the present disclosure is useful as a cap to be attached to a medical connector or the like because the connecting portion does not greatly protrude to the side when the port portion is covered.

110 Cap 111 Cap body 112 Ring part 113 Connecting part 115 First bending part 116 Second bending part 117 Intermediate part 121 Thread 123 Top surface 125 Protrusion 131 Bending forming part 150 Connector 151 Port part 153 Thread

Claims (7)

A screw-type cap body that covers the port to be attached, and
A ring portion that can be detachably and rotatably attached to the body portion of the port portion,
The cap body and the ring portion are connected to each other, and a thin plate-shaped connecting portion having two opposing main surfaces and two side surfaces narrower than the main surface is provided.
When the ring portion is attached to the body portion of the port portion, the port portion is covered with the cap body, and the port portion is viewed in a plan view from the top surface side of the cap body, the connecting portion is placed on the cap body side. It is located between the first bent portion located, the second bent portion located on the ring portion side, the first bent portion and the second bent portion, and is located along the outer periphery of the port portion. It has an intermediate portion that is curved, and sandwiches a part of the cap body side portion that is adjacent to each other across the first bent portion, a portion that is opposite to the cap body, and the second bent portion . A cap in which one of the main surfaces is bent so as to overlap in the extending direction of the port portion in a part of the portion on the ring portion side and the portion on the opposite side of the ring portion that are adjacent to each other. 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.
The cap according to claim 1, wherein the distance between the ring portion and the second bent portion is 1/3 or less and 1/10 or more of the length of the connecting portion. The connecting portion has a thin portion that is thinner than the other portions of the connecting portion.
The cap according to claim 1 or 2, wherein the thin portion becomes the bent portion when the ring portion is attached to the 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, a straight line connecting the position where the connecting portion is connected to the cap body and the center of the cap body is formed. 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 cap described. When the ring portion is attached to the body portion of the port portion, the port portion is covered with the cap body, and the port portion is viewed in a plan view from the top surface side of the cap body, the first bent portion is the cap body. The cap according to any one of claims 1 to 4, which is arranged at a position protruding radially outward from the ring portion, and the second bent portion is arranged at a position protruding radially outward from the ring portion. The cap according to any one of claims 1 to 5,
A medical connector including a connector body to which the ring portion is attached. The sixth aspect of claim 6, wherein the cap is 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. Medical connector.

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