JP5257673B2 - Medical port with cap - Google Patents

Description

  The present invention relates to a medical port with a cap that can be suitably used for a medical container that can store a liquid material such as a chemical solution or a high calorie infusion.

  Intravenous nutrition therapy and enteral nutrition therapy are known as methods for administering nutrition and drugs to patients regardless of oral administration. In parenteral nutrition therapy, a liquid (generally referred to as “infusion”) containing nutritional components such as glucose and drug components is administered via an infusion line inserted into a patient's vein. In enteral nutrition therapy, liquids such as nutrients, liquid foods, or drugs (generally “ Called enteral nutrient).

  In parenteral nutrition therapy, for example, a medical container 900 as shown in FIG. 4 is used to adjust and temporarily store a liquid substance to be administered to a patient (see Patent Document 1). The medical container 900 includes a container main body 920 and a medical port 930. The container body 920 is a bag (so-called pouch) formed by superposing two substantially rectangular sheets 921 having the same dimensions, which are soft and flexible, and joining them at a seal region 922 around them. . A medical port 930 is attached to the seal region 922 of the container body 920 in a state of being sandwiched between two sheets 921. The medical port 930 includes a first port 931 and a second port 932. The first port 931 is a so-called needleless port, and includes a rubber valve (septum) having resealability in which a linear slit (cut) is formed at the center. The second port 932 includes a rubber valve that is not formed with a slit.

  Such a medical container 900 is used as follows, for example.

  First, the liquid substance is adjusted in an empty medical container 900 in a clean area such as a drug department in a hospital. A case where adjustment of the liquid material is performed via the first port 931 will be described. For example, the lock connector 941 provided at one end of the liquid feeding circuit 940 is connected to the first port 931. By inserting a tube body (not shown) of the lock connector 941 into a slit formed in the septum of the first port 931, the inside of the container main body 920 and the liquid feeding circuit 940 communicate with each other. A plurality of puncture bodies 942 provided at the other end of the liquid feeding circuit 940 are connected to a plurality of vials in which various nutrient component liquids such as amino acids and various vitamins are separately stored. Various nutrient component liquids are introduced into the medical container 900 via the liquid feeding circuit 940 and mixed in the medical container 900. After removing the lock connector 941 from the first port 931, the tip of the syringe without a needle made of metal or resin (hereinafter simply referred to as “needle”) in the slit formed in the septum of the first port 931. (Male lure) may be inserted, and a small amount of drug solution such as insulin may be injected. Since the slit of the septum of the first port 931 has resealability, additional pipetting can be performed by inserting the tube of the lock connector 941 and the male luer as many times as necessary into the slit of the septum. Thus, the desired liquid material is adjusted in the container body 920.

  The medical container 900 in which the adjusted liquid material is stored is transported to a medical department or a hospital room, and the liquid material in the medical container 900 is administered to the patient. The liquid substance can be administered through the second port 932. For example, a needle provided at one end of the infusion set is punctured into a rubber valve provided at the second port 932, and a venous needle provided at the other end is punctured into a patient's vein.

In the above usage example, the liquid material is adjusted through the first port 931, but can also be adjusted through the second port 932. By puncturing a needle having a sharp tip into a rubber valve provided in the second port 932, various nutrient component liquids and chemical liquids can be injected into the container main body 920 through the needle. When the needle is removed from the rubber valve, the hole formed by puncturing the needle is closed and the sealed state of the container body 920 is maintained.
JP 2007-267986 A

  As described above, in the above-described conventional medical container 900, the first port 931 and the second port 931 that can be used as a mixed injection port so that the mixed injection necessary for obtaining a desired liquid material can be performed any number of times. The port 932 is provided with a rubber valve. Therefore, additional mixed injections and the like may be performed in a department other than a predetermined department such as a medicine department where the liquid substance should be adjusted, for example, in a medical department or a hospital room.

  However, in clinical departments and hospital rooms, the hygienic environment is worse than in areas where liquids such as the pharmacy are scheduled to be adjusted, so if additional mixed injection is performed in such an environment, infusion contamination occurs. there is a possibility. In addition, despite the completion of liquid preparation, there is a possibility that erroneous drug administration may occur due to unnecessary or erroneous additional mixed injection in the department or hospital room. Furthermore, an unaccustomed worker working in a medical department or a hospital room may puncture the septum by mistakenly piercing the septum provided in the first port 931, thereby causing liquid leakage. There is.

  Therefore, after the adjustment of the liquid in the medical container is completed in a predetermined department such as the medicine department, the above problem can be prevented by preventing the mixed injection port from being physically used. It is desirable to do.

  The purpose of the present invention is to make the operator aware that the adjustment of the liquid material is completed after the adjustment of the liquid material in the medical container is completed, and to make it impossible to use the mixed injection port physically. There is.

  The present invention is a medical port with a cap that is used by being attached to a container body, and includes a medical port having a first port and a second port that allow communication between the inside and the outside of the container body, and a cap attached to the first port. I will provide a. Each of the first port and the second port includes a partition member made of an elastic material that separates the inside and the outside of the container body. The cap includes a top plate made of a hard material that covers the partition member of the first port, and an engagement structure that engages with the medical port. The engagement structure is configured so that the cap cannot be removed from the first port after the cap is attached to the first port.

  The capped medical port of the present invention includes a cap that cannot be removed from the first port after being attached to the first port of the medical port. Therefore, if the cap is attached to the first port after the adjustment of the liquid substance in the container body is completed through the first port as the mixed injection port, the operator can easily recognize that the adjustment of the liquid substance is completed. be able to. In addition, since the partition member of the first port is covered with the top plate of the cap, the first port cannot be used thereafter, so additional mixed injection in an unsanitary environment, unnecessary or incorrect addition It is possible to prevent mixed injection and erroneous puncture of the partition member.

  In the medical port with a cap of the present invention described above, it is preferable that a slit is formed in the cap so that a portion including the engagement structure of the cap can be elastically displaced. Thereby, the attachment property with respect to the 1st port of a cap improves.

  Preferably, the first port has an outer peripheral surface that is a substantially cylindrical surface, and the cap has an inner peripheral surface that is a substantially cylindrical surface that fits with the outer peripheral surface of the first port. Since the outer peripheral surface of the first port and the inner peripheral surface of the cap that are fitted to each other are both substantially cylindrical surfaces, they can be fitted without considering the rotational position around the central axis of the cap. Therefore, the attachment property with respect to the 1st port of a cap improves. Here, the “substantially cylindrical surface” means that the cylindrical surface is provided with an engagement structure for engaging with other members.

  It is preferable that the cap is red. Thereby, a user can be made to recognize easily that the cap is attached to the 1st port.

  The top plate of the cap preferably has a Rockwell hardness R of 30 or more. Accordingly, it is possible to prevent erroneous use such as the needle penetrating the partition member of the first port through the top plate.

  The cap preferably includes an inner peripheral surface that fits with an outer peripheral surface of the first port, and the engagement structure is formed on the inner peripheral surface. Thus, after the cap is attached to the first port, it becomes difficult to remove the cap from the first port, so that the use of the first port can be reliably prohibited.

  It is preferable that an engagement structure that engages with the engagement structure of the cap is formed on the outer peripheral surface of the first port. Thus, after the cap is attached to the first port, it becomes difficult to remove the cap from the first port, so that the use of the first port can be reliably prohibited. In addition, there are many known medical ports that have an engagement structure with a connector on the outer peripheral surface of the first port. According to this preferred embodiment, the known medical ports are used as they are. Thus, the medical port with a cap of the present invention can be realized.

  In the above, at least one of the engagement structure formed on the inner peripheral surface of the cap and the engagement structure formed on the outer peripheral surface of the first port is formed continuously in the circumferential direction. It is preferable that Accordingly, the cap-side engagement structure and the first port-side engagement structure can be engaged regardless of the rotational position around the center axis of the cap, so that the cap can be easily attached to the first port. To do. Moreover, even if the cap attached to the first port rotates about its central axis, the cap does not fall off from the first port.

  Preferred embodiments of a medical port with a cap according to the present invention will be described below in detail with reference to the drawings. However, it goes without saying that the present invention is not limited to the following embodiments.

  The medical port with a cap according to the present invention includes a medical port used by being attached to a container body, and a cap. The medical port is not particularly limited as long as it has at least two ports that allow the inside and outside of the container body to communicate with each other, and may be a known medical port.

  FIG. 1A is a perspective view seen from above a medical port 50 constituting a medical port with a cap according to an embodiment of the present invention, and FIG. 1B is a perspective view seen from below. FIG. 1C is a cross-sectional view of the medical port 50 taken along the section 1C-1C of FIG. 1A. The medical port 50 of the present embodiment has substantially the same configuration as the conventional medical port 930 shown in FIG. 4 described above, and includes a base 60, a first port 100 provided on the base 60, and A second connection port 200.

  The base 60 includes a plate-shaped flat plate portion 61, and a peripheral wall 62 erected from the outer peripheral edge of the flat plate portion 61 toward one side (lower side) of the flat plate portion 61. The medical port 50 of the present embodiment can be integrated with the container body 920 using the peripheral wall 62 to form a medical container, similarly to the conventional medical port 930 shown in FIG. That is, the periphery of the two sheets 921 is sealed (for example, heat-sealed, super-sealed) in a state where the peripheral wall 62 is sandwiched between the periphery of the two sheets 921 having flexibility constituting the container body 920 of the medical container. By performing sonic sealing or the like, the medical port 50 and the container main body 920 can be integrated at the same time when the sealing region 922 is formed.

  As shown in FIG. 1C, the flat plate portion 61 is formed with a first opening 71 and a second opening 72 that both penetrate the flat plate portion 61.

  The first port 100 includes a substantially cylindrical tubular portion 110 that communicates with the first opening 71, and a first partition member 120 that seals an opening on the upper side (opposite the flat plate portion 61) of the tubular portion 110. And a first cover 130 for fixing the first partition member 120 to the cylindrical portion 110. The cylindrical portion 110 is erected on the opposite side of the peripheral wall 62 with respect to the flat plate portion 61.

  The first partition member 120 is a disc-like valve having a straight slit 121 formed in the center thereof, and is generally called a “septum”. By inserting a male luer such as a tip of a syringe without a needle into the slit 121 of the first partition member 120, the spaces on both sides of the first partition member 120 can be communicated with each other through the male luer. Thereafter, when the male lure is removed, the slit 121 is immediately closed and resealed. The first port 100 including the first partition member 120 is called a needleless port.

  The first cover 130 has a substantially cylindrical first peripheral wall 131 fitted to the cylindrical part 110 so as to surround the outer peripheral surface of the cylindrical part 110, and a first cover provided at one end of the first peripheral wall 131. It consists of a main body 132. A circular opening 133 is formed in the center of the first cover main body 132.

  The first partition member 120 is placed on the upper end of the cylindrical part 110, and then the first cover 130 is fitted to the cylindrical part 110. Thereby, the first partition member 120 is fixed to the upper end of the cylindrical portion 110 in a state of being sandwiched between the upper end of the cylindrical portion 110 and the first cover main body 132 of the first cover 130. At this time, the slit 121 of the first partition member 120 is exposed in the central opening 133 of the first cover main body 132.

  The outer peripheral surface of the first peripheral wall 131 of the first cover 130 is a substantially cylindrical surface, and a first annular protrusion 134 and a second annular protrusion 135 projecting outward are formed on the outer peripheral surface. The first and second annular protrusions 134 and 135 are both continuous in the circumferential direction of the first peripheral wall 131, and the second protrusion 135 is positioned closer to the flat plate portion 61 side (lower side) than the first protrusion 134. Yes. The first and second annular protrusions 134 and 135 include engaging surfaces 134a and 135a substantially parallel to the flat plate portion 61, and inclined surfaces 134b and 135b on the opposite side of the flat plate portion 61 from the engaging surfaces 134a and 135a. Prepare each. The first and second annular protrusions 134 and 135 are for locking the lock connector 941 described in FIG. 4 to the first port 100. Since the mechanism in which the first and second annular protrusions 134 and 135 engage with the lock connector 941 is known in the above-mentioned Patent Document 1 and the like, the description thereof is omitted. Further, on the outer peripheral surface near the upper end of the first peripheral wall 131, a pair of hook-shaped protrusions 136a and 136b protruding outward are provided. The pair of hook-shaped protrusions 136 a and 136 b are for locking a connector having an engagement structure different from that of the lock connector 941 to the first port 100. Since the mechanism for locking the connector using the pair of hook-shaped protrusions 136a and 136b is also known, the description thereof is omitted. As described above, the first port 100 of the present embodiment has an engagement structure (first and second annular protrusions 134 and 135 and a pair of hook-shaped protrusions 136a and 136b) for locking at least two types of connectors. ).

  The second port 200 includes a substantially cylindrical pedestal portion 210 that communicates with the second opening 72, a second partition member 220 that seals the opening on the upper side of the pedestal portion 210 (the side opposite to the flat plate portion 61), And a second cover 230 that fixes the partition member 220 to the pedestal 210. The pedestal part 210 is erected on the opposite side of the peripheral wall 62 with respect to the flat plate part 61.

  The second partition member 220 does not have the slit 121 formed in the first partition member 120, and is a plug body generally called a “rubber plug”. By piercing the second partition member 220 with a sharp tip of a needle attached to the tip of a syringe or the like, the spaces on both sides of the second partition member 220 can be communicated with each other through the needle. Thereafter, when the needle is removed, the hole through which the needle has passed is immediately closed and sealed.

  The second cover 230 has a substantially cylindrical second peripheral wall 231 fitted to the pedestal part 210 so as to surround the outer peripheral surface of the pedestal part 210, and a second cover main body 232 provided at one end of the second peripheral wall 231. It consists of. A circular opening 233 is formed at the center of the second cover body 232.

  The second partition member 220 is placed on the upper end of the pedestal part 210, and then the second cover 230 is fitted to the pedestal part 210. As a result, the second partition member 220 is fixed to the upper end of the pedestal part 210 while being sandwiched between the upper end of the pedestal part 210 and the second cover body 232 of the second cover 230. At this time, the central portion of the second partition member 220 is exposed in the central opening 233 of the second cover 232.

  The material of each part constituting the medical port 50 excluding the first and second partition members 120 and 220 is not particularly limited, but is preferably a hard material, for example, a resin such as polypropylene, polyethylene, polycarbonate, polyvinyl chloride or the like. Hard plastics containing are preferred. Each of these parts can be integrally formed by injection molding using these materials.

  There is no restriction | limiting in particular in the material of the 1st partition member 120, A well-known elastic material can be used as a material of a septum. Especially, the material which shows general rubber-like elasticity is preferable, for example, the material of JIS-A hardness 20-60 can be used preferably. Specific examples include silicone rubber, isoprene rubber, synthetic rubber such as butyl rubber and nitrile rubber, thermoplastic elastomer, and polyvinyl chloride as a material other than rubber-based materials.

  The material of the second partition member 220 is also not particularly limited, and a known elastic material can be used as a plug material called a rubber plug. For example, materials showing rubber-like elasticity such as silicone rubber, isoprene rubber and butyl rubber, polyvinyl chloride and the like can be exemplified.

  FIG. 2A is a perspective view seen from above of a cap 300 constituting a medical port with a cap according to an embodiment of the present invention, and FIG. 2B is a perspective view seen from below. 2C is a cross-sectional view of the cap 300 taken along the section 2C-2C of FIG. 2A.

  The cap 300 includes a substantially cylindrical fitting tube 320 and a substantially disk-shaped top plate 310 provided at one end of the fitting tube 320. A plurality (three in this example) of slits 321 are formed from the end (lower side) of the fitting cylinder 320 where the top plate 310 is not provided toward the top plate 310 side. A plurality (three in this example) of engagement protrusions 322 are formed on the inner peripheral surface, which is a substantially cylindrical surface of the fitting cylinder 320, as an engagement structure that engages with the medical port 50. One engagement protrusion 322 is provided in each of a plurality (three in this example) of the fitting cylinder 320 divided in the circumferential direction by the plurality of slits 321. The distances from the top plate 310 of the plurality of engaging protrusions 322 are the same. The plurality of slits 321 and the plurality of engagement protrusions 322 are all provided at equiangular intervals with respect to the central axis 301 of the cap 300. Note that the engagement protrusion 322 may be formed on the inner peripheral surface of the fitting cylinder 320 over the entire periphery (except for the portion where the slit 321 is formed).

  The engaging protrusion 322 has an inclined surface 322a on the lower side (side far from the top plate 310), an engaging surface 322c on the upper side (side closer to the top plate 310), and a peak between them. A surface 322b is provided. The top surface 322b is the surface closest to the central axis 301 among the surfaces of the engaging protrusions 322, and forms a part of a cylindrical surface having the central axis 301 as the central axis. The inclined surface 322a is a surface inclined such that the distance from the central axis 301 increases as the distance from the top surface 322b increases, and forms a part of a conical surface with the central axis 301 as the central axis. The engaging surface 322 c is substantially perpendicular to the central axis 301.

  The cap 300 is attached to the first port 100 of the medical port 50. 3A is a perspective view seen from above the medical port 50 with the cap 300 attached to the first port 100, and FIG. 3B is a perspective view seen from below. 3C is an arrow cross-sectional view of the medical port 50 taken along section 3C-3C in FIG. 3A.

  A first annular protrusion formed on the outer peripheral surface of the first peripheral wall 131 so that the first peripheral wall 131 of the first cover 130 of the first port 100 is fitted by the fitting cylinder 320 of the cap 300 so as to surround the first peripheral wall 131. 134 is engaged with an engaging protrusion 322 formed on the inner peripheral surface of the fitting cylinder 320. The top plate 310 of the cap 300 completely covers the first partition member 120 (see FIG. 1A) exposed in the central opening 133 of the first cover body 132 of the first port 100.

  An example of a method for using the capped medical port of the present embodiment configured as described above will be described below.

  As described above, the medical port 50 is integrated with the container body and delivered to a hospital or the like as an empty medical container (see FIG. 4). At this time, the cap 300 is not attached to the first port 100. In a clean area such as the pharmacy of a hospital, the liquid to be administered to the patient is adjusted in this empty medical container. This adjustment can be performed via the first port 100. The specific adjustment method is not different from the case where the conventional medical container 900 described in FIG. 4 is used. For example, a connector provided at one end of a liquid feeding circuit having a flexible tube is connected to the first port 100. Since the tube of the connector is inserted into the slit 121 formed in the first partition member (septum) 120 of the first port 100, various liquid agents can be introduced into the medical container through this liquid feeding circuit. This connector may include an engagement structure that engages with the first annular protrusion 134, the second annular protrusion 135, or the hook-shaped protrusions 136 a and 136 b of the first port 100. Alternatively, the medical solution may be injected by inserting the tip (male luer) of a needleless syringe into the slit 121 formed in the first partition member 120 of the first port 100. Since the slit 121 of the first partition member 120 of the first port 100 has resealability, additional pipetting can be performed by inserting a connector tube or a male luer into the slit 121 as many times as necessary.

  When the adjustment of the liquid material in the medical container is completed, the cap 300 is attached to the first port 100 as shown in FIGS. 3A to 3C. The cap 300 serves as a mark indicating that the adjustment of the liquid material has been completed.

  Thereafter, the medical container is transported to a medical department or hospital room in the hospital, and the liquid substance in the medical container is administered to the patient. The administration of the liquid material is performed through the second port 200 to which the cap 300 is not attached. The specific administration method is not different from the conventional one. For example, a needle provided at one end of the infusion set is punctured into the second partition member 220 of the second port 200, and a vein needle provided at the other end is punctured into the patient's vein.

  As described above, according to the present invention, when the adjustment of the liquid substance in the medical container is completed, a port other than the second port 200 used for administration of the liquid substance to the patient thereafter, that is, as a mixed injection port The cap 300 is attached to the used first port 100. By attaching the cap 300, the operator can easily recognize that the adjustment of the liquid material has been completed. Therefore, possibility that additional mixed injection will be performed can be reduced.

  When the cap 300 is attached to the first port 100, the first partition member 120 (see FIG. 1A) exposed in the central opening 133 of the first cover body 132 of the first port 100 is removed by the top plate 310 of the cap 300. It is completely covered (see FIG. 3A). Therefore, in the state where the cap 300 is attached, physical access to the first partition member 120 is impossible, so that additional mixed injection through the first port 100 can be prevented. Also, when a liquid substance is administered to a patient, the first partition member 120 of the first port 100 is accidentally inserted into the first partition member 120 to perforate the first partition member 120, thereby causing liquid leakage. Mistakes can be prevented.

  In order to prevent physical access to the first partition member 120 by attaching the cap 300 to the first port 100, the top plate 310 that covers at least the first partition member 120 of the cap 300 has a needle. It is necessary to be made of a hard material having a hardness that cannot be punctured. Specifically, the hardness of the top plate 310 is preferably 30 or more in Rockwell hardness R, and more preferably 40 or more. In addition, the thickness of the top plate 310 may vary depending on the material, but in general, it is preferably 0.5 mm or more from the viewpoint of ensuring mechanical strength that does not allow the needle to penetrate, and ensures good moldability. It is preferable that it is 5 mm or less from a viewpoint to do. The material of the top plate 310 is not particularly limited, and for example, resin materials such as polycarbonate, ABS resin, polyacetal, polyethylene terephthalate, polypropylene, polyethylene, and polyamide, and metal materials such as stainless steel can be used. In addition, by making the material of the fitting cylinder 320 the same as that of the top plate 310, the entire cap 300 can be integrally formed of the same material, which is preferable in terms of reducing the number of parts and the number of manufacturing steps. In this case, it is preferable to use the above resin material because complicated shapes such as the slits 321 and the engagement protrusions 322 can be easily and accurately formed by injection molding.

  In addition, in order to allow the operator to reliably recognize that the cap 300 is attached to the first port 100, that is, the adjustment of the liquid material is completed, at least the outer surface of the cap 300 (the first port 100 The surface on the side not facing the surface) may be colored. Although it does not specifically limit as a color to color, For example, red, yellow, etc. which are easy to appeal to human vision can be used, and especially red is preferable. The outer surface of the cap 300 may not be colored with the same color but may be colored with a pattern such as a stripe pattern. There are no particular restrictions on the coloring method, but there are known methods such as a method of applying a coating to the surface of the cap 300 by printing, a method of molding the cap 300 using a resin material mixed with a pigment of a predetermined color, and the like. This method can be used. However, the method of injection molding the cap 300 using a resin material mixed with a pigment of a predetermined color is preferable because the cap 300 can be easily colored with a small number of steps.

  In order to ensure the above effect of the cap 300, once the cap 300 is attached to the first port 100, the cap 300 is attached to the first port unless means such as destroying the cap 300 is used. It must be prevented from being removed from 100. In the present embodiment, the engagement surface 322 c of the engagement protrusion 322 of the cap 300 that engages with the first annular protrusion 134 of the first port 100 is a surface that is substantially perpendicular to the central axis 301. When a force in the direction of pulling out from the first port 100 is applied to the cap 300, the engaging surface 322c of the cap 300 and the engaging surface 134a of the first annular protrusion 134 that are perpendicular to the direction of this force come into contact. It is extremely difficult to pull out the cap 300 from the first port 100. Furthermore, an engagement protrusion 322 as an engagement structure that engages with the medical port 50 is formed on the inner peripheral surface of the fitting cylinder 320 of the cap 300, or the cap 300 is removed from the first port 100. Is even more difficult. However, these are only examples, and the cap 300 may be provided with an engagement structure other than the above, such that the cap 300 cannot be removed from the first port 100.

  On the other hand, in this embodiment, in order to improve the attachment property of the cap 300 to the first port 100, the following configuration is adopted.

  The first is that a plurality of slits 321 are formed in the fitting cylinder 320 so as to sandwich the individual engaging protrusions 322 formed on the cap 300. The plurality of slits 321 facilitate the elastic displacement of the engagement protrusion 322 with respect to the central axis 301 in the radial direction. As a result, when the cap 300 is pushed into the first port 100, the engagement protrusion 322 is elastically displaced away from the central axis 301 when it makes contact with the first annular protrusion 134 of the first port 100. The annular protrusion 134 can be easily overcome.

  Second, the engagement protrusion 322 of the cap 300 has an inclined surface 322a on the side opposite to the engagement surface 322c. As a result, the engaging protrusion 322 can be elastically displaced away from the central axis 301 by using the pressing force when the cap 300 is pressed into the first port 100, so that the engaging protrusion 322 is the first annular protrusion. 134 can be easily overcome.

  Third, the inner peripheral surface of the fitting tube 320 of the cap 300 is a substantially cylindrical surface, and the outer peripheral surface of the first port 100 that fits with the inner peripheral surface of the fitting tube 320 (the first cover in this embodiment). The outer peripheral surface of the first peripheral wall 131 of 130 is also a substantially cylindrical surface. Thus, when the cap 300 is attached to the first port 100, it is not necessary to adjust the rotational position of the cap 300 around the central axis 301 with respect to the first port 100.

  Fourth, the first annular protrusion 134 of the first port 100 with which the engagement protrusion 322 of the cap 300 engages is formed continuously in the circumferential direction on the outer peripheral surface of the first port 100. Accordingly, the engagement protrusion 322 of the cap 300 can be engaged with the first annular protrusion 134 of the first port 100 regardless of the rotational position of the cap 300 around the central axis 301 with respect to the first port 100. it can.

  In this invention, said 1st-4th structure is not essential, The one part or all part can also be abbreviate | omitted.

  The engagement protrusion 322 of the cap 300 of this embodiment is engaged with a first annular protrusion 134 that is used to engage with the lock connector 941 when the lock connector 941 is connected to the first port 100. That is, the engagement protrusion 322 of the cap 300 is designed so as to engage with the engagement structure provided in the existing first port 100. Therefore, it is not necessary to newly design the medical port 50, and the cap-equipped medical port of the present invention can be realized only by adding the cap 300 to the existing medical port 50.

  The above embodiment is merely an example, and the present invention is not limited to this, and various modifications are possible.

  For example, in the above embodiment, the cap 300 includes the engagement structure (engagement protrusion 322) that engages with the first annular protrusion 134 of the first port 100, but the second annular protrusion 135 or the pair of hooks An engagement structure that engages with the projections 136a and 136b may be provided. When an engagement structure that engages with a pair of circumferentially discontinuous hook-shaped protrusions 136a and 136b is provided, the cap 300 can be engaged regardless of the rotational position around the central axis 301 of the cap 300. It is preferable that the engagement structure provided in the is continuous in the circumferential direction, or the length of the discontinuous portion is less than the length of the hook-shaped protrusions 136a and 136b.

  In the above embodiment, the engagement structure on the first port 100 side that engages with the engagement structure (engagement protrusion 322) on the cap 300 side is the outer peripheral surface of the first peripheral wall 131 of the first cover 130. For example, it may be provided on the outer peripheral surface of the cylindrical portion 110 that is not covered by the first cover 130. Furthermore, the engagement structure on the medical port 50 side may be provided not in the first port 100 but in the vicinity of the first port 100 of the base 60, for example. Further, the engagement structure on the cap 300 side does not need to be provided on the inner peripheral surface of the fitting cylinder 310, and may be provided on the tip surface or the outer peripheral surface thereof. For example, when the engagement structure on the cap 300 side is provided on the distal end surface of the fitting cylinder 310, the engagement structure on the medical port 50 side can be provided on the flat plate portion 61, for example. When the engagement structure on the cap 300 side is provided on the outer peripheral surface of the fitting cylinder 310, for example, a substantially cylindrical second cylindrical part surrounding the cylindrical part 110 is erected on the flat plate part 61, and the medical port 50 is provided. The side engagement structure can be provided on the inner peripheral surface of the second cylindrical portion.

  In the embodiment described above, the medical port 50 includes the two ports 100 and 200, but may include three or more ports. In this case, it is preferred that one port is used to administer the adjusted liquid in the medical container to the patient and the remaining ports are used for adjustment of the liquid. And it is preferable to provide the cap which can be attached to all this remaining ports.

  The partition member provided in each of the plurality of ports provided in the medical port is not limited to the above embodiment. The partition member provided in the first port that is used for the adjustment of the liquid material and is then attached to the cap is the septum in which the slit 121 is formed in the above embodiment, but is provided in the second port 200. Such a rubber plug in which no slit is formed may be used, and other known partition members may be used. In addition, the partition member provided in the second port that is used to administer the liquid substance to the patient, and therefore the cap is not attached, is a rubber stopper in the above embodiment, but a septum or other than these A known partition member may be used. The material of the partition member provided in the first and second ports is not limited to that described in the above embodiment, and is known as a material of the partition member that can insert a male luer or puncture a needle. Elastic materials can be used. For example, a material having a JIS-A hardness of 20 to 60 can be used with its thickness set appropriately.

  The container body to which the medical port of the present invention is attached is not particularly limited, and is formed into a predetermined three-dimensional shape other than a so-called pouch in which two flexible sheets as shown in FIG. 4 are bonded together in a bag shape. It may be a hard container or other known container. Depending on the container body, the configuration of the joint portion of the medical port with respect to the container body (the peripheral wall 62 in the above embodiment) can be changed as appropriate.

  The field of application of the present invention is not particularly limited, and can be widely used as a part having a plurality of ports attached to a medical container used in, for example, parenteral nutrition therapy.

FIG. 1A is a perspective view of a medical port with a cap according to an embodiment of the present invention as viewed from above. FIG. 1B is a perspective view of a medical port with a cap according to an embodiment of the present invention as viewed from below. 1C is an arrow cross-sectional view of the medical port taken along section 1C-1C in FIG. 1A. FIG. 2A is a perspective view of a cap-equipped medical port according to an embodiment of the present invention as viewed from above. FIG. 2B is a perspective view of the cap-equipped medical port according to the embodiment of the present invention as seen from below. 2C is a cross-sectional view of the cap taken along the section 2C-2C of FIG. 2A. FIG. 3A is a perspective view, as viewed from above, of a medical port with a cap according to an embodiment of the present invention, in which a cap is attached to the first port. FIG. 3B is a perspective view from below of a medical port with a cap according to an embodiment of the present invention, in which a cap is attached to the first port. FIG. 3C is an arrow cross-sectional view of the medical port with a cap according to the embodiment of the present invention along the cross section 3C-3C of FIG. 3A. FIG. 4 is a view showing an example of a medical container used for adjusting and temporarily storing a liquid substance to be administered to a patient.

Explanation of symbols

50 medical port 60 base 61 flat part 62 peripheral wall 71 first opening 72 second opening 100 first port 110 cylindrical part 120 first partition member 121 slit 130 first cover 131 first peripheral wall 132 first cover main body 133 Opening 134 First annular protrusion 134a Engagement surface 134b Inclined surface 135 Second annular protrusion 135a Engagement surface 135b Inclined surface 136a, 136b Hook-shaped protrusion 200 Second port 210 Base portion 220 Second partition member 230 Second cover 231 First 2 surrounding wall 232 second cover body 233 opening 300 cap 301 central shaft 310 top plate 320 fitting cylinder 321 slit 322 engaging projection 322a inclined surface 322b top surface 322c engaging surface

Claims (8)

A medical port that is used by being attached to a container body and has a first port and a second port that allow the inside and outside of the container body to communicate with each other; and a cap attached to the first port;
Each of the first port and the second port includes a partition member made of an elastic material that separates the inside and the outside of the container body,
The cap includes a top plate made of a hard material that covers the partition member of the first port, and an engagement structure that engages with the medical port,
The medical port with a cap, wherein the engagement structure is configured so that the cap cannot be removed from the first port after the cap is attached to the first port.   The medical port with a cap according to claim 1, wherein a slit is formed in the cap so that a portion including the engagement structure of the cap can be elastically displaced.   The said 1st port has an outer peripheral surface which is a substantially cylindrical surface, The said cap has an inner peripheral surface which is a substantially cylindrical surface which fits with the said outer peripheral surface of the said 1st port. Medical port with cap.   The medical port with a cap according to claim 1, wherein the cap is red.   The medical port with a cap according to any one of claims 1 to 4, wherein the top plate of the cap has a Rockwell hardness R of 30 or more.   The medical device with a cap according to any one of claims 1 to 5, wherein the cap includes an inner peripheral surface that fits with an outer peripheral surface of the first port, and the engagement structure is formed on the inner peripheral surface. port.   The medical port with a cap according to claim 6, wherein an engagement structure that engages with the engagement structure of the cap is formed on the outer peripheral surface of the first port.   At least one of the engagement structure formed on the inner peripheral surface of the cap and the engagement structure formed on the outer peripheral surface of the first port is formed continuously in the circumferential direction. The medical port with a cap according to claim 7.

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