JP2010194105A - Medical port and medical container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a medical port capable of being connected either to a rotary connector or a lever-locking connector, and capable of the slipping connection. <P>SOLUTION: The medical port includes a cylindrical part 110, a cap 150 fitted into the cylindrical part, and a valve element 180 with a slit 181, held between the cylindrical part and the cap. Rotation limiting structures for limiting the rotation of the cap relative to the cylindrical part are disposed in the cylindrical part and in the cap. A plurality of projections 160 rotationally symmetrical to the center axis of the cylindrical part and an annular projection 162 continued in the circumferential direction are disposed on the outer surface of the medical port in this order from the distal end toward the proximal end. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a medical port that can be suitably used for a medical container or the like that can store a liquid material such as a chemical solution or a high-calorie infusion. The present invention also relates to a medical container having a medical port.

  Infusion therapy such as parenteral nutrition therapy and enteral nutrition therapy is known as a method of administering a liquid substance containing a nutritional component and a pharmaceutical component to a patient regardless of oral administration. In infusion therapy, medical containers are used to adjust and temporarily store liquids to be administered to patients. This medical container generally comprises a container main body made of a bag-like material such as a pouch, and a medical port for taking a liquid material into and out of the container main body.

  As a medical port, a so-called needleless port is known which includes a disc-like rubber valve element (generally called “septum”) having a linear slit (cut) formed in the center. By piercing a tubular body that does not have a sharp tip into the slit of the septum, the inside and the outside of the container body can be communicated with each other through the tubular body. When the tubular body is removed from the septum, the septum slit is immediately closed. As described above, the septum has resealability, and the tubular body can be repeatedly inserted and removed (see, for example, Patent Document 1).

  Examples of the tubular body inserted into the slit of the septum include a tip (luer) of a syringe without a needle and a male connector attached to one end of a tube such as an infusion set. A method of inserting these tubular bodies into the slits of the septum and connecting the tubular body and the needleless port is generally called “slip connection”.

  In the slip connection, since the tubular body is simply inserted into the septum, there is a problem that when an external force is applied or a liquid material is pumped, the tubular body is easily detached from the septum. In order to prevent this, a connector configured to be engaged with a needleless port while a tubular body is inserted into a septum is known.

  For example, Patent Document 2 describes a so-called “rotary connector”. The rotary connector includes a tubular body that is inserted into the slit of the septum, and a free lock nut that is sheathed by the tubular body. A pair of convex portions is formed on the inner peripheral surface of the free lock nut. On the other hand, a pair of protrusions that can be engaged with a pair of protrusions of the freelock nut are formed on the outer peripheral surface of the needleless port where the septum is held. The tubular body is inserted into the slit of the septum, and then the free lock nut is rotated to engage the pair of protrusions of the free lock nut with the pair of protrusions of the needleless port.

  Patent Document 1, Patent Document 3 and Patent Document 4 describe so-called “lever lock type connectors”. The lever lock type connector includes a tubular body inserted into the slit of the septum, and a pair of lock levers disposed on both sides of the tubular body and having locking claws formed at the distal ends. On the other hand, an annular service protrusion and an annular protrusion that are continuous in the circumferential direction are formed on the outer peripheral surface of the needleless port holding the septum. In the temporarily connected state in which the locking claw of the lock lever is engaged with the annular service protrusion, the lever lock connector is locked to the needleless port without the tubular body being inserted into the slit of the septum. When the lever-locked connector is pushed into the needleless port from the temporarily connected state, the tubular body is inserted into the slit of the septum and the locking claw of the lock lever is engaged with the annular protrusion.

  According to the rotary connector and the lever lock type connector described above, the needleless port and the connector are formed with engaging structures that engage with each other, so that the state where the tubular body is inserted into the slit of the septum is stabilized. Can be maintained.

JP 2007-267986 A Japanese Patent No. 3389983 JP 2004-483 A JP 2006-141714 A

  However, the rotary connector and the lever lock connector differ in the engagement structure with respect to the needleless port. Therefore, the locking claw formed at the tip of the pair of lock levers of the lever-lock connector cannot be locked to the needle-less port suitable for the rotary connector, and the needle-less port suitable for the lever-lock connector. A pair of convex portions formed on the free lock nut of the rotary connector cannot be locked to the port. As described above, the medical port provided with the conventional needleless port has a limited connector that can be connected.

  An object of the present invention is to provide a medical port that can be connected to either a rotary connector or a lever lock connector, and can also be slip-connected. Moreover, an object of this invention is to provide the medical container provided with such a medical port.

  The medical port of the present invention has a cylindrical tubular portion, a cap fitted to the tubular portion, a slit formed in the center, and a peripheral portion sandwiched between the tubular portion and the cap. And a valve body. A rotation restricting structure for restricting the rotation of the cap with respect to the tubular portion is provided in the tubular portion and the cap. A plurality of protrusions that are rotationally symmetric with respect to the central axis of the cylindrical portion and an annular protrusion that is continuous in the circumferential direction are provided on the outer peripheral surface of the medical port in this order from the distal end to the proximal end. .

  The medical container of the present invention includes the medical port of the present invention and a container body.

  According to the medical port of the present invention, the rotary connector can be connected using a plurality of protrusions. In addition, since the rotation limiting structure limits the rotation of the cap with respect to the cylindrical portion, the operation of engaging and releasing the free lock nut and the plurality of protruding portions of the rotary connector can be performed stably. it can.

  Moreover, a lever lock type connector can be connected using an annular protrusion.

  Furthermore, a tubular body such as a male connector attached to the tip of a syringe without a needle or one end of a tube such as a nutrition set or an infusion set can be inserted into the slit of the valve body for slip connection.

  Therefore, it is possible to provide a medical port that can be connected to either a rotary connector or a lever lock connector, and further capable of slip connection.

FIG. 1 is a perspective view showing an embodiment of the medical port of the present invention. FIG. 2 is a cross-sectional view of the first port taken along the plane including line 2-2 in FIG. FIG. 3 is a perspective view showing a base constituting the medical port shown in FIG. FIG. 4 is a cross-sectional view of the base along the plane including line 4-4 in FIG. FIG. 5 is a cross-sectional view of the base along the plane including line 5-5 in FIG. 6A is a perspective view seen from the upper side of the cap constituting the medical port shown in FIG. 1, and FIG. 6B is a perspective view seen from the lower side of the cap. 7 is a cross-sectional view of the cap taken along the plane including line 7-7 in FIG. 6A. 8A is a perspective view of the plug body constituting the medical port shown in FIG. 1, and FIG. 8B is a cross-sectional view of the plug body along the plane including the line 8B-8B in FIG. 8A. 9A is a perspective view seen from the connection side of the rotary connector connectable to the first port of the medical port of the present invention, and FIG. 9B is a perspective view seen from the operation side of the rotary connector. FIG. 10 is a perspective view showing a state where a rotary connector is connected to the first port of the medical port of the present invention. 11 is a cross-sectional view taken along a plane including line 11-11 in FIG. FIG. 12A is a perspective view seen from the connection side of the lever lock type connector connectable to the first port of the medical port of the present invention, and FIG. 12B is a perspective view seen from the operation side of the rotary connector. FIG. 13 is a perspective view showing a state (temporary connection state) in which a lever-lock connector is temporarily connected to the first port of the medical port of the present invention. 14 is a cross-sectional view taken along a plane including line 14-14 in FIG. FIG. 15 is a perspective view showing a state where the lever-lock connector is permanently connected to the first port of the medical port of the present invention (mainly connected state). 16 is a cross-sectional view along a plane including line 16-16 in FIG. FIG. 17 is a view showing an embodiment of a medical container provided with the medical port of the present invention shown in FIG.

  In the medical port of the present invention, a first protrusion is formed on the outer peripheral surface of the cylindrical portion, a claw is formed on the inner peripheral surface of the cap, and the first protrusion of the cylindrical portion is formed. It is preferable that the valve body is sandwiched between the tubular portion and the cap by engaging the claw of the cap with the claw. In this case, the rotation restricting structure contacts the claw when the cap is about to rotate with respect to the tubular portion in a state where the claw, the first protrusion, and the claw are engaged. It is preferable that the outer peripheral surface of the cylindrical portion is constituted by a second protrusion provided closer to the base end side than the first protrusion. According to this preferred configuration, the claw formed on the cap can be shared for fixing the cap to the cylindrical portion and for limiting the rotation of the cap with respect to the cylindrical portion. The configuration can be simplified.

  The cylindrical shape is in contact with the claw when the cap is about to rotate relative to the cylindrical portion in a state where the first protrusion of the cylindrical portion and the claw of the cap are not engaged with each other. It is preferable that a third protrusion is provided on the outer peripheral surface of the portion on the tip side of the first protrusion. Thereby, the operation | work which attaches a cap to a cylindrical part becomes easy.

  It is preferable that the number of the protrusions is two. Thereby, the operation | work which connects a rotary connector becomes easy.

  The medical port can be connected to a rotary connector and a lever lock connector, and the plurality of protrusions engage with a plurality of protrusions formed on an inner peripheral surface of a free lock nut of the rotary connector. Preferably, the annular protrusion engages with a locking claw formed at the tip of a pair of lock levers of the lever lock type connector. Thereby, the medical port which can connect a well-known rotary connector and a well-known lever lock type connector is realizable.

  It is preferable that an annular service protrusion that is continuous in the circumferential direction is further provided on the outer peripheral surface between the plurality of protrusions and the annular protrusion. Thereby, the lever lock type connector can be temporarily connected using the annular service protrusion.

  Below, this invention is demonstrated in detail, showing suitable embodiment. However, it goes without saying that the present invention is not limited to the embodiments shown below.

[Composition of medical port]
FIG. 1 is a perspective view showing an embodiment of a medical port 300 of the present invention. As shown in FIG. 1, the medical port 300 includes a base 301 and a first port 100 and a second port 200 provided on the base 301.

  For convenience of the following description, as shown in the figure, the direction parallel to the central axis of the first port 100 is the Z axis, the direction orthogonal to the Z axis and the direction connecting the first port 100 and the second port 700 is the X axis. A direction perpendicular to the Z axis and the X axis is taken as a Y axis. The Z-axis direction is referred to as “vertical direction”, the arrow side of the Z-axis (that is, the upper side in FIG. 1) is referred to as “upper side” or “tip side”, and the opposite side (lower side in FIG. It is called “lower side” or “proximal side”.

  The base 301 includes a plate-like flat plate portion 310 parallel to the XY plane, and a peripheral wall 320 erected in parallel with the Z axis from the flat plate portion 310 downward.

  2 is a cross-sectional view of the first port 100 taken along the plane including the line 2-2 in FIG. 1 (that is, the plane including the central axis of the first port 100 and parallel to the YZ plane). The first port 100 includes a substantially cylindrical tubular portion 101 erected on the flat plate portion 311, a cap 150 fitted to the upper end of the tubular portion 101, and an upper (tip side) end of the tubular portion 101. And a valve body 180 that seals the opening.

  FIG. 3 is a perspective view of the base 301. 4 is a plane including line 4-4 in FIG. 3 (that is, a plane including the central axis 101a of the cylindrical portion 101 (which coincides with the central axis of the first port 100) and parallel to the YZ plane). It is arrow sectional drawing of the base 301 along. 5 is a cross-sectional view of the base 301 taken along the plane including the line 5-5 in FIG. 3 (that is, the plane including the central axis 101a of the cylindrical portion 101 and parallel to the XZ plane). A first opening 311 and a second opening 312 having circular edges are formed in the flat plate portion 310. The cylindrical portion 101 and the cylindrical portion 201 are erected on the flat plate portion 310 toward the opposite side (upper side) of the peripheral wall 320 so as to surround the first opening 311 and the second opening 312.

  On the outer peripheral surface of the substantially cylindrical tubular portion 101, a pair of first protrusions 110 extending in the circumferential direction, four second protrusions 120 extending in parallel with the Z-axis, and a pair of first protrusions extending in the circumferential direction. Three protrusions 130 are provided. The first protrusion 110, the second protrusion 120, and the third protrusion 130 have a rotationally symmetric shape that is two-fold symmetric with respect to the central axis 101a of the cylindrical portion 101 (which coincides with the original shape when rotated 180 degrees). ing.

  The 1st protrusion 110 is provided with the top part 111 which is a part where the outer diameter becomes the largest, and the inclined surface 112 distribute | arranged adjacent to the top part 111 above this (front end side).

The 3rd protrusion 130 is provided with the top part 131 which is a part where the outer diameter becomes the largest. The top 131 is located on the upper side (tip side) of the top 111 of the first protrusion 110. External dimensions D ₁₃₁ at the top 131 of the pair of third projections 130 is greater than the outer dimension D ₁₁₁ at the top 111 of the pair of first protrusions 110.

  In the circumferential direction of the cylindrical portion 101, the first protrusions 110 and the third protrusions 130 are alternately arranged. In the circumferential direction of the cylindrical portion 101, the position of the second protrusion 120 coincides with the position of the end portion 132 in the circumferential direction of the third protrusion 130. In the Z-axis direction, the second protrusion 120 is provided in a region closer to the base end (lower side) than the top 111 of the first protrusion 110.

  6A is a perspective view of the cap 150 as viewed from above, FIG. 6B is a perspective view of the cap 150 as viewed from below, and FIG. 7 is a cross-sectional view of the cap 150 along the plane including line 7-7 in FIG. 6A. It is. The cap 150 includes a peripheral wall 151 having a substantially cylindrical shape, and a top plate 170 provided at one end of the peripheral wall 151.

  On the outer peripheral surface of the peripheral wall 151, a pair of protrusions 160, an annular service protrusion 161, and an annular protrusion 162 are formed in this order from the top plate 170 side.

  The pair of protrusions 160 extend in the circumferential direction, and are disposed symmetrically with respect to the central axis of the cap 150 (which coincides with the central axis 101a of the cylindrical portion 101). The position, shape, and dimensions of the protrusion 160 are related to the pair of protrusions provided on the inner peripheral surface of the free lock nut that constitutes the rotary connector (see, for example, Patent Document 2) to be connected to the first port 100. It is set to be able to match. For example, it can be set to be the same as a pair of protrusions provided on the outer peripheral surface of a known needleless port suitable for a rotary connector.

  The annular service protrusion 161 and the annular protrusion 162 are continuously formed in the circumferential direction. The positions, shapes, and dimensions of the annular service protrusion 161 and the annular protrusion 162 are the same as those of a pair of lock levers of a lever lock type connector (see, for example, Patent Document 1, Patent Document 3, and Patent Document 4) to be connected to the first port 100 It is set so that it can be engaged with a locking claw provided at the tip. For example, it can be set to be the same as the annular service protrusion and the annular protrusion provided on the outer peripheral surface of a known needleless port suitable for the lever lock type connector.

  A pair of claws 165 are provided on the inner peripheral surface of the peripheral wall 151. The pair of claws 165 extend in the circumferential direction and are disposed symmetrically with respect to the central axis of the cap 150. The claw 165 includes a top portion 166 that has a minimum inner diameter, and an inclined surface 167 that is adjacent to the top portion 166 and is disposed on the opposite side of the top plate 170 from the top portion 166. The circumferential length of the claw 165 is equal to or smaller than the circumferential interval between the two second protrusions 120 sandwiching the first protrusion 110 formed on the outer peripheral surface of the cylindrical portion 101.

  An opening 171 is formed at the center of the top plate 170.

  FIG. 8A is a perspective view of the plug body 180. 8B is a cross-sectional view of the stopper taken along the plane including the line 8B-8B in FIG. 8A. The plug 180 is a disc-like valve having a straight slit 181 formed at the center. Such a valve is commonly referred to as a “septum”.

  There is no restriction | limiting in particular in the material of the plug body 180, For example, a well-known material can be used as a material of a septum. Preferably, a material exhibiting general rubber-like elasticity, for example, a material having a hardness JIS-A hardness of 20 to 60 can be used. Specific examples include silicone rubber, isoprene rubber, synthetic rubber such as butyl rubber and nitrile rubber, or thermoplastic elastomer.

  The first port 100 is assembled as follows.

  First, the plug body 180 is placed on the tip of the cylindrical portion 101. Next, the cap 150 is placed on the cylindrical portion 101 so as to cover the plug body 180.

Depending on the rotational position of the cap 150 around the central axis 101 a with respect to the tubular portion 101, the claw 165 formed on the inner peripheral surface of the cap 150 may collide with the third protrusion 130. In this case, the claw 165 of the cap 150 cannot get over the third protrusion 130 of the cylindrical portion 101 even if the cap 150 is pushed down downward (base end side). In this case, the cap 150 is rotated around the central axis 101a with respect to the tubular portion 101 while lightly pressing the cap 150 downward. The claw 165 of the cap 150 is released from the collision with the third projection 130 and collides with the first projection 110 instead. Since the top 111 of the first protrusion 110 is located below the top 131 of the third protrusion 130, the cap 150 moves slightly downward simultaneously with the claw 165 colliding with the first protrusion 110. When the cap 150 is rotated around the central axis 101a with respect to the tubular portion 101 in a state where the claw 165 collides with the first protrusion 110, the circumferential end 168 (see FIG. 6B) of the claw 165 is third. Since it collides with the circumferential end 132 of the protrusion 130, the rotation of the cap 150 is limited. When the cap 150 is pushed downward with the claw 165 colliding with the first protrusion 110, the inclined surface 167 of the claw 165 and the inclined surface 112 of the first protrusion 110 slide in opposite directions while coming into contact with each other. The cap 150 is elastically deformed so that the inner dimension between the top portions 166 of the 165 is enlarged. Since the outer dimension D ₁₁₁ at the top 111 of the pair of first protrusions 110 is smaller than the outer dimension D ₁₃₁ at the top 131 of the pair of third projections 130, the top portion 166 of the pawl 165 top 111 of the first protrusion 110 Can be overcome. When the top portion 166 of the claw 165 climbs over the top portion 111 of the first protrusion 110, the cap 150 is elastically recovered and the claw 165 and the first protrusion 110 are engaged. At the same time, the peripheral edge of the valve body 180 is sandwiched between the tip of the tubular portion 101 and the top plate 170 of the cap 150, and the opening on the distal end side of the tubular portion 101 is sealed by the valve body 180. Moreover, the center area | region in which the slit 181 of the valve body 180 was formed is exposed in the opening 171 of the center of the cap 150 (refer FIG. 1).

  Second protrusions 120 are provided at both ends of the first protrusion 110 in the circumferential direction. Therefore, when the cap 150 is rotated around the central axis 101a with respect to the tubular portion 101 in a state where the first protrusion 110 and the claw 165 are engaged, the circumferential end 168 of the claw 165 is second. Colliding with the protrusion 120, the cap 150 cannot be rotated further. That is, the second protrusion 120 formed on the outer peripheral surface of the cylindrical portion 101 and the claw 165 formed on the inner peripheral surface of the cap 150 cause the cap 150 to rotate around the central axis 101 a with respect to the cylindrical portion 101. A rotation restricting structure that restricts the operation is configured. In the present embodiment, the second protrusion 120 extends in parallel with the Z axis, but if the movement of the claw 165 in the circumferential direction can be restricted in a state where the first protrusion 110 and the claw 165 are engaged, the shape of the second protrusion 120 will be described. There are no particular restrictions. For example, the projection may be a columnar shape, a polygonal columnar shape, a conical shape, or a polygonal pyramid shape.

  In the assembly operation of the first port 100, the cylindrical portion 101 may be covered with the cap 150 without particularly considering the rotational position around the central axis 101a of the cap 150 with respect to the cylindrical portion 101. In some cases, the claw 165 formed on the inner peripheral surface of the cap 150 may collide with the third protrusion 130 of the cylindrical portion 101. However, when the cap 150 is rotated about the central axis 101a with respect to the tubular portion 101 while pushing the cap 150 lightly downward, the cap 150 slightly moves downward and the claw 165 moves to the first protrusion 110. collide. In this state, the claw 165 is in contact with the third protrusion 130, so that the rotation of the cap 150 with respect to the tubular portion 201 is limited. After confirming this state, when the cap 150 is pushed firmly to the proximal end side, the claw 165 is positioned between the two second protrusions 120 sandwiching the first protrusion 110 in the circumferential direction, Can be engaged. As described above, the third protrusion 130 serves to securely engage the claw 165 and the first protrusion 110 without the claw 165 of the cap 150 riding on the second protrusion 120. Therefore, the assembly operation of the first port 100 can be performed easily and quickly.

  The second port 200 includes a substantially cylindrical tubular portion 201 (see FIG. 3) erected on the flat plate portion 310 of the base 301, a cover member 212 fitted to the tip of the tubular portion 201, and a peripheral edge. The portion includes a plug 215 sandwiched between the tip of the cylindrical portion 201 and the cover member 212 (see FIG. 1).

  The plug 215 is generally called a “rubber plug”. By puncturing the plug body 215 with a needle having a sharp tip, the both side spaces of the plug body 215 can be communicated with each other through the needle. When the needle is removed from the plug 215, the hole formed by puncturing the needle is closed. There is no restriction | limiting in particular in the material of the stopper 215, For example, a well-known material can be used as a material of the rubber stopper which comprises a medical port. Specifically, materials showing rubber-like elasticity such as silicone rubber, isoprene rubber, and butyl rubber can be exemplified.

  The material of the base 301 is not particularly limited. For example, when a medical container is configured by heat sealing with a container main body 610 (see FIG. 17 described later) as described later, the base 301 has good heat sealability. It is preferable. Specifically, resin materials such as polyethylene, polypropylene, and polyvinyl chloride can be used. The base 301 can be integrally formed by injection molding using such a resin material.

  The material of the cap 150 and the cover member 212 is not particularly limited, and for example, the same material as that used in a conventional medical port can be used. The cap 150 preferably has the mechanical strength necessary to connect the rotary connector and the lock lever connector. Specifically, a resin material such as polyacetal, polycarbonate, polyamide, polyethylene, polypropylene, or polyethylene terephthalate can be used as the material for the cap 150 and the cover member 212. The cap 150 and the cover member 212 can also be integrally formed by injection molding using such a resin material.

[Slip connection]
In the slit 181 of the plug 180 of the first port 100 of the medical port 300 described above, a male connector attached to one end of a tube such as a nutritional set or an infusion set, etc. By inserting this tubular body, the first port 100 and the tubular body can be slip-connected. When the tubular body is pulled out from the plug body 180, the slit 181 of the plug body 180 is immediately closed.

  Thus, the 1st port 100 of this embodiment can be slip-connected similarly to the conventional needleless port.

[Connection with rotary connector]
For example, a conventional rotary connector known from Patent Document 2 can be connected to the first port 100 of the medical port 300. An example of a rotary connector that can be connected to the first port 100 will be described. 9A is a perspective view seen from the connection side of the rotary connector 400, and FIG. 9B is a perspective view seen from the operation side of the rotary connector 400. FIG.

  The rotary connector 400 includes a tubular body 410 through which a liquid material passes and a free lock nut 420 for fixing the tubular body 410.

  The tubular body 410 has a substantially cylindrical shape, and one end thereof is a connection portion 411 connected to a tube constituting a nutrition set or an infusion set, and the other end is a slit of a plug body (septum) 180 of the first port 100. This is an insertion portion 412 to be inserted into 181. A first locking projection 413 that is continuous in the circumferential direction is formed on the outer peripheral surface of the tubular body 410 (see FIG. 11 described later).

  The free lock nut 420 has a cylindrical shape as a whole, and has a cylindrical connection ring 421 at one end. On the inner peripheral surface of the connection ring 421, a pair of convex portions 422 projecting toward the tubular body 410 are formed symmetrically with respect to the central axis 420 a of the free lock nut 420. The contour of the convex portion 422 is substantially “L” -shaped, and includes an engagement wall 423 extending in the circumferential direction of the connection ring 421 and a stop wall 424 extending substantially parallel to the central axis 420a.

  A second locking projection 425 that is continuous in the circumferential direction is formed on the inner peripheral surface of the free lock nut 420 (see FIG. 11 described later).

  The rotary connector 400 is assembled by inserting the connection portion 411 of the tubular body 410 into the opening of the free lock nut 420 on the connection ring 421 side. When the first locking protrusion 413 of the tubular body 410 is locked to the second locking protrusion 425 of the free lock nut 420, the tubular body 410 falls out of the opening of the free lock nut 420 opposite to the connection ring 421. There is nothing.

  The tubular body 410 and the free lock nut 420 can be manufactured by a method such as injection molding using a resin material such as polycarbonate or polypropylene.

  The attachment / detachment method between the first port 100 and the rotary connector 400 is basically the same as the attachment / detachment between the conventional rotary connector and a medical port adapted thereto. This will be described below.

  FIG. 10 is a perspective view showing a state where the rotary connector 400 is connected to the first port 100. 11 is a cross-sectional view taken along a plane including the line 11-11 in FIG. 10 (that is, a plane including the central axis 101a of the cylindrical portion 101 and parallel to the YZ plane). The connection states shown in FIGS. 10 and 11 can be realized as follows. First, the insertion portion 412 of the tubular body 410 is inserted into the slit 181 of the plug (septum) 180 of the first port 100. At substantially the same time, the rotational position of the free lock nut 420 relative to the first port 100 is adjusted so that the convex portion 422 of the free lock nut 420 does not collide with the protruding portion 160 of the cap 150, and the connection ring 421 of the free lock nut 420 is adjusted. Is put on the cap 150. Next, the free lock nut 420 is slightly rotated with respect to the first port 100 to engage the protrusion 160 of the cap 150 and the engagement wall 423 of the convex portion 422 of the free lock nut 420. When the free lock nut 420 is rotated until the protrusion 160 of the cap 150 contacts the stop wall 424 of the free lock nut 420, the engagement area between the protrusion 160 and the engagement wall 423 is maximized, and the rotary connector 400 is moved. The first port 100 can be stably connected. Thus, as shown in FIG. 11, the first port 100 and the tubular body 410 communicate with each other.

  Removal of the rotary connector 400 from the first port 100 may be performed in the reverse manner to the above. That is, the free lock nut 420 is rotated in the opposite direction to the first port 100 to release the engagement between the protrusion 160 of the cap 150 and the engagement wall 423 of the convex portion 422 of the free lock nut 420. To do. Next, the insertion portion 412 of the tubular body 410 is pulled out from the slit 181 of the plug body 180 of the first port 100. The slit 181 of the plug 180 is immediately closed and sealed when the insertion portion 412 is removed.

  As described above, the claw 165 of the cap 150 comes into contact with the first protrusion 110 formed on the outer peripheral surface of the cylindrical portion 101 and the claw 165 formed on the inner peripheral surface of the cap 150 in an engaged state. By providing the second protrusion 120 on the outer peripheral surface of the cylindrical portion 101, the cap 150 is restricted from rotating with respect to the cylindrical portion 101. Therefore, even when the free lock nut 420 is rotated with respect to the first port 100 when the rotary connector 400 is attached to and detached from the first port 100, the cap 150 does not rotate with respect to the tubular portion 101 together with the free lock nut 420. . Therefore, by rotating the free lock nut 420, the protrusion 160 of the cap 150 and the engagement wall 423 of the free lock nut 420 can be engaged and released stably.

  As described above, the first port 100 of the present embodiment can connect the rotary connector 400 using the pair of protrusions 160.

[Connection with lever lock type connector]
To the first port 100 of the medical port 300 described above, for example, a conventional lever lock connector known in Patent Document 1, Patent Document 3, and Patent Document 4 can be connected. An example of a lever lock connector that can be connected to the first port 100 will be described. 12A is a perspective view seen from the connection side of the lever lock type connector 500, and FIG. 12B is a perspective view seen from the operation side of the lever lock type connector 500. FIG.

  The lever lock type connector 500 has a cylindrical tubular body 510 through which a liquid material passes in the center thereof. The tubular body 510 has a substantially cylindrical shape, one end of which is a connection portion 511 connected to a tube constituting a nutrition set or infusion set, and the other end is a slit of a plug body (septum) 180 of the first port 100. It is the insertion part 512 inserted into 181 (see FIGS. 14 and 16 described later).

  A substantially cylindrical hood 520 is disposed so as to surround the insertion portion 512 of the tubular body 510. A pair of connecting portions 521 connects the hood 520 and the tubular body 510.

  A pair of lock levers 530 are arranged with the tubular body 510 interposed therebetween. The lock lever 530 extends substantially parallel to the longitudinal direction of the tubular body 510, has a locking piece 531 on the insertion portion 512 side, and an operation piece 532 on the connection portion 511 side. The lock lever 530 is connected to the hood 520 via an elastic coupling portion 539 provided at a position between the locking piece 531 and the operation piece 532. The locking piece 531 is disposed in a notch 522 formed in the hood 520, and the operation piece 532 protrudes closer to the connecting portion 511 than the hood 520 substantially parallel to the longitudinal direction of the tubular body 510. When the pair of operation pieces 532 of the pair of lock levers 530 are pinched with fingers so as to approach each other, the elastic connecting portion 539 is elastically deformed and the pair of locking pieces 531 are displaced so as to be separated from each other. When the finger is released from the pair of operation pieces 532 from this state, the elastic connecting portion 539 is elastically restored and the pair of locking pieces 531 approach each other to return to the initial state. A locking claw 533 is erected on the surface of the locking piece 531 facing the insertion portion 512 toward the insertion portion 512.

  The lever lock type connector 500 can be integrally manufactured by a method such as injection molding using a resin material, for example. The material of the lever lock connector 500 is not particularly limited, but the hardness necessary for inserting the insertion portion 512 into the slit 181 of the plug body 180 and the elasticity necessary for allowing the lock lever 530 to swing. It is preferable to have. For example, polycarbonate, polypropylene and the like are suitable.

  The attachment / detachment method between the first port 100 and the lever lock type connector 500 is basically the same as the attachment / detachment between the conventional lever lock type connector and the medical port adapted thereto. This will be described below.

  First, a method of connecting the lever lock connector 500 to the first port 100 will be described.

  FIG. 13 is a perspective view showing a state (temporary connection state) in which the lever lock connector 500 is temporarily connected to the first port 100. 14 is a cross-sectional view taken along a plane including line 14-14 in FIG. 13 (that is, a plane including the central axis 101a of the cylindrical portion 101 and parallel to the YZ plane). The temporary connection state shown in FIGS. 13 and 14 can be obtained as follows. That is, the hood 520 of the lever lock connector 500 is externally inserted into the first port 100. Then, the locking claw 533 of the lever lock connector 500 is engaged with the annular service protrusion 161 formed on the outer peripheral surface of the cap 150. At this time, the insertion portion 512 of the lever lock connector 500 is close to or in contact with the plug body 180 of the first port 100, but is inserted into the slit 181 formed in the plug body 180 (see FIGS. 1 and 8). Not. In this temporary connection state, the first port 100 and the lever lock connector 500 are not separated unless the engagement state between the annular service protrusion 161 and the locking claw 533 is released by operating the pair of lock levers 530. Can not.

  FIG. 15 is a perspective view showing a state where the lever lock connector 500 is permanently connected to the first port 100 (mainly connected state). 16 is a cross-sectional view taken along a plane including line 16-16 in FIG. 15 (that is, a plane including the central axis 101a of the cylindrical portion 101 and parallel to the YZ plane). The main connection state shown in FIGS. 15 and 16 can be obtained by further pushing the lever-lock connector 500 toward the base 301 from the temporary connection state shown in FIGS. 13 and 14. In this connection state, the locking claw 533 of the lever lock type connector 500 engages with the annular protrusion 162 formed on the outer peripheral surface of the cap 150. In addition, the insertion portion 512 of the lever lock connector 500 is inserted into the slit 181 of the plug 180 of the first port 100. Thus, as shown in FIG. 16, the first port 100 and the tubular body 510 communicate with each other. Even in this fully connected state, the first port 100 and the lever-lock connector 500 cannot be separated unless the pair of lock levers 530 is operated to release the engagement state between the annular protrusion 162 and the locking claw 533. .

  The lever lock connector 500 is removed from the first port 100 as follows. That is, in the main connection state shown in FIGS. 15 and 16, the pair of operation pieces 532 of the pair of lock levers 530 of the lever lock connector 500 are pinched with fingers so as to approach each other, and the locking claws 533 and the annular protrusions The state of engagement with 162 is released. In this state, the lever lock type connector 500 is pulled out from the first port 100. The slit 181 of the plug 180 is immediately closed and sealed when the insertion portion 512 is extracted.

  As described above, the lever lock connector 500 can be connected to the first port 100 of the present embodiment using the annular service protrusion 161 and the annular protrusion 162.

[Medical container]
FIG. 17 is a view showing an embodiment of a medical container 600 provided with the medical port 300 described above.

  The medical container 600 includes a container body 610 and a medical port 300. The container body 610 is a bag (so-called pouch) formed by superposing two substantially rectangular sheets 611 having the same dimensions, which are soft and flexible, and joining them at a seal region 612 at the periphery thereof. . The medical port 300 described above is attached to the seal region 612 of the container body 610 in a state of being sandwiched between two sheets 611.

  The material of the sheet 611 is not particularly limited, and examples thereof include vinyl chloride resin, polyethylene, ethylene-vinyl acetate copolymer, polyester, polybutadiene, polypropylene, polyamide, and ethylene-methacrylate copolymer. Although there is no restriction | limiting in particular in the thickness of the sheet | seat 611, For example, about 0.1-0.4 mm is suitable. There is no restriction | limiting in particular also about the planar view shape of the container main body 610, For example, rectangular shape, elliptical shape, etc. may be sufficient.

  The peripheral edges of the two sheets 611 are sealed (for example, heat is applied) with the peripheral wall 320 (see FIG. 1) of the base 301 of the medical port 300 sandwiched between the peripheral edges of the two sheets 611 constituting the container body 610. By performing sealing or ultrasonic sealing, the medical port 300 and the container body 610 can be joined and integrated at the same time as the sealing region 612 is formed.

  As described above, for example, the tip (luer) 701 of the syringe 700 without a needle can be slip-connected to the first port 100 of the medical port 300. Moreover, the rotary connector 400 attached to the end of the tube 450 which comprises a nutrient set, an infusion set, etc. can be connected. Further, a lever lock connector 500 attached to one end of a tube 550 constituting a nutrition set, an infusion set, or the like can be connected.

  The above embodiment is merely an example, and the present invention is not limited to this, and various modifications can be made.

  For example, the medical port 300 has the second port 200 having a so-called rubber plug in addition to the first port 100. However, the medical port of the present invention has a rotary connector and a lever lock type. It suffices to have at least one port to which a connector can be connected and a slip connection is possible. Therefore, for example, the second port 200 may be omitted. Two or more ports having substantially the same configuration as the first port 100 may be provided. Alternatively, a third port other than the first port 100 and the second port 200 may be further provided.

  The specifications of the protrusion 160, the annular service protrusion 161, and the annular protrusion 162 provided on the outer peripheral surface of the first port 100 can be appropriately changed according to the specifications of the rotary connector and lever lock connector to be connected. . For example, the number of protrusions 160 is two in the above embodiment, but may be three or more. Regardless of the number of protrusions, the protrusions are arranged rotationally symmetrical. However, the smaller the number of protrusions 160, the more the insertion portion 412 can be moved even when the rotational alignment of the freelock nut 420 relative to the first port 100 is rougher when the rotary connector 400 is connected to the first port 100. It becomes possible to insert into the slit 181 of the plug body 180, and the connection workability of the rotary connector is improved.

  In the above embodiment, the protrusion 160, the annular service protrusion 161, and the annular protrusion 162 are all formed on the outer peripheral surface of the cap 150, but these may be formed on the outer peripheral surface of the first port 100, For example, at least one of these may be formed on the outer peripheral surface of the cylindrical portion 101. However, the protrusion 160, the annular service protrusion 161, and the annular protrusion 162 are required to have mechanical strength enough to lock the rotary connector and the lever lock connector. When the cylindrical portion 101 is formed integrally with the peripheral wall 320 that requires good heat-sealability as in the above embodiment, the room for selecting the material of the cylindrical portion 101 is narrowed, and the cylindrical portion 101 is reduced. It may be difficult to form the protrusion 160, the annular service protrusion 161, and the annular protrusion 162 having the desired mechanical strength on the tubular portion 101. In such a case, as in the above-described embodiment, the protrusion 160, the annular service protrusion 161, and the annular protrusion 162 are provided on the cap 150, which is a separate part from the tubular portion 101, so that a desired mechanical property is obtained. The protrusion 160, the annular service protrusion 161, and the annular protrusion 162 having strength can be easily obtained.

  The annular service protrusion 161 can be omitted. In this case, the lever lock type connector 500 cannot be temporarily connected.

  The configuration of the medical container provided with the medical port of the present invention is not limited to FIG. For example, the container main body is not limited to a bag-like material composed of two sheets, and may have any configuration known in medical containers. Depending on the configuration of the container body, the configuration of the connection portion of the medical port of the present invention with the container body can be changed as appropriate. Further, the medical port of the present invention may constitute at least a part of the container body.

  The field of use of the medical port of the present invention is not particularly limited. For example, it can be used by being attached to a medical container used for infusion therapy such as parenteral nutrition therapy or enteral nutrition therapy. Or it can also be used as a mixed injection port provided in the middle of a nutrition set, an infusion set, etc. used when performing infusion therapy.

100 1st port 101 Tubular part 101a Center axis 110 of the tubular part 1st protrusion 111 1st protrusion top part 112 1st protrusion inclined surface 120 2nd protrusion 130 3rd protrusion 131 3rd protrusion top part 132 3rd protrusion End portion 150 cap 151 peripheral wall 160 projecting portion 161 annular service projection 162 annular projection 165 claw 166 claw top portion 167 claw inclined surface 168 claw end portion 170 top plate 171 opening 180 valve element 181 slit 200 second port 201 cylinder Shaped part 212 cover member 215 plug 300 medical port 301 base 310 flat plate part 311 first opening 312 second opening 320 peripheral wall 400 rotary connector 410 tubular body 411 connection part 412 insertion part 413 first locking projection 420 free Lock nut 421 Connection ring 422 Protruding portion 423 Engagement wall 424 Stopping wall 425 Second locking Origin 450 Tube 500 Lever lock type connector 510 Tubular body 511 Connection portion 512 Insertion portion 520 Hood 521 Connection portion 522 Notch 530 Lock lever 531 Locking claw 532 Operation piece 533 Locking claw 539 Elastic connection portion 550 Tube 600 Medical container 610 Container body 611 Sheet 612 Seal region 700 Syringe 701 Syringe tip

Claims (7)

A medical device comprising a cylindrical tubular portion, a cap fitted to the tubular portion, and a valve body in which a slit is formed in the center and a peripheral portion is sandwiched between the tubular portion and the cap. Port,
A rotation limiting structure for limiting the rotation of the cap with respect to the cylindrical portion is provided in the cylindrical portion and the cap,
A plurality of protrusions that are rotationally symmetric with respect to the central axis of the cylindrical portion and an annular protrusion that is continuous in the circumferential direction are provided on the outer peripheral surface in this order from the distal end to the proximal end. Medical port. A first protrusion is formed on the outer peripheral surface of the cylindrical portion, and a claw is formed on the inner peripheral surface of the cap;
The valve element is sandwiched between the tubular portion and the cap by the engagement of the first protrusion of the tubular portion and the claw of the cap.
In the state where the claw, the first protrusion, and the claw are engaged, the rotation restricting structure is configured to contact the claw when the cap is about to rotate with respect to the cylindrical portion. The medical port according to claim 1, further comprising: a second protrusion provided on the outer peripheral surface of the portion closer to the base end side than the first protrusion.   The cylindrical shape is in contact with the claw when the cap is about to rotate relative to the cylindrical portion in a state where the first protrusion of the cylindrical portion and the claw of the cap are not engaged with each other. The medical port according to claim 2, wherein a third protrusion is provided on a distal end side of the first protrusion on the outer peripheral surface of the portion.   The medical port according to any one of claims 1 to 3, wherein the number of the projecting portions is two. The medical port can be connected to a rotary connector and a lever lock connector,
The plurality of protrusions engage with a plurality of protrusions formed on an inner peripheral surface of a free lock nut of the rotary connector,
The medical port according to any one of claims 1 to 4, wherein the annular protrusion is engaged with a locking claw formed at a tip of a pair of lock levers of the lever lock connector.   The medical port according to any one of claims 1 to 5, wherein an annular service protrusion that is continuous in a circumferential direction is further provided on the outer peripheral surface between the plurality of protrusions and the annular protrusion.   The medical container provided with the medical port and container main body in any one of Claims 1-6.

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