JP5177494B2 - Medical container and medical container set - Google Patents

Description

  The present invention relates to a medical container for storing a liquid substance to be administered to a patient when performing enteral nutrition, parenteral nutrition, or the like. Moreover, this invention relates to the medical container set which consists of this medical container and a nutrition set.

  Enteral nutrition and parenteral nutrition are known as methods for administering nutrition and drugs to patients without oral administration. In enteral nutrition, a liquid such as a nutrient, liquid food, or drug is administered through a tube passed from the patient's nasal cavity to the stomach or duodenum. In the parenteral nutrition method, 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 a medical field such as a hospital, enteral nutrition and parenteral nutrition are performed, for example, in the following procedure. First, a liquid substance to be administered to a patient is adjusted in a working room and injected into a medical container. Next, one end of a so-called nutrition set including a long tube having flexibility is connected to the port (fluid passage) of the medical container. Next, the medical container is suspended from the hanger with the port to which the nutrition set is connected facing down. With the medical container suspended from a hanger, the medical container and nutrition set are transported to the patient room where the patient is. Then, the end of the nutrition set opposite to the side connected to the medical container is connected to the patient, and the liquid in the medical container is administered to the patient.

Medical containers used in such enteral nutrition and parenteral nutrition are known, for example, from Patent Documents 1 and 2.
Japanese Utility Model Publication No. 61-25795 JP 2006-199303 A

  In the above procedures for enteral nutrition and parenteral nutrition, the medical container filled with liquid material in the work room is hung on a hanger and then the nutrition set is connected to the patient in the hospital room until the nutrition set is connected to the patient. There is a problem that handling is complicated.

  That is, when a medical container and a nutrition set are transported to a hospital room where a patient is in a state where the medical container is suspended on a hanger, a flexible long tube constituting the nutrition set is entangled or hangs down. It is necessary to prevent contact with the floor surface. Conventionally, for example, a nutrition set tube is hung on a hanger, or a nutrition set tube is wound around a medical container. However, simply hung the tube of the nutrition set on the hanger may cause the nutrition set to fall easily due to vibrations or accidental touches of the operator while the medical container is being transported. high. Further, the method of winding the nutrition set around the medical container has a problem that the work of winding the nutrition set and the work of solving this are complicated.

  An object of the present invention is to solve the above-described conventional problems and to improve the handling of a nutrition set connected to a medical container.

The medical container of the present invention is a medical container having a bag-like container body in which a flexible sheet is bonded in a seal region, and an opening (first opening) is formed in the seal region. The opening is bent into a substantially U shape or a V shape by bending a flexible tube into the opening, and the portion of the tube inserted into the opening is bent into a substantially Ω shape. And holding the tube by engaging the substantially curved portion of the tube with the edge of the opening, as viewed along the direction perpendicular to the surface of the seal region. The shape of the edge of the opening satisfies the following conditions.

[Conditions] The shape of the edge of the opening is a substantially rhombus shape in which the inner angles at both ends in the major axis direction are acute angles, and two virtual circles of the same diameter having a value D of 3 mm or more and 6 mm or less as a diameter Are arranged so as to be inscribed in the edge of the opening so that the distance between them is maximized, the two virtual circles do not overlap each other and both contact the edge of the opening at two points.

  The medical container set of the present invention has the above-described medical container of the present invention and flexibility for injecting a liquid material into the container body or taking out the liquid material stored in the container body. And a nutrition set including a tube.

  According to the present invention, the predetermined opening (through hole) is formed in the seal region of the container body. If the tube constituting the nutrition set is bent and inserted into this opening, the tube can be stably held at the edge of the opening. Further, since the edge of the opening has a predetermined shape, it is possible to prevent the tube inserted into the opening from unintentionally falling out of the opening. Therefore, the handling property of the nutrition set including a long tube can be improved by a simple and low-cost method of forming an opening in the seal region.

  In the medical container according to the present invention, it is preferable that the internal angles at both ends in the major axis direction of the opening are acute angles, and the internal angles are preferably 60 ° or less. Thereby, the tube inserted in the opening can be held more stably on the edge of the opening.

  It is preferable that the radii of curvature RL at both ends in the major axis direction of the opening are 3 mm or less. Accordingly, when the tube is inserted into the opening, the possibility that the tube contacts the edge of the opening at two points is increased. Therefore, the tube can be held more stably at the edge of the opening.

  It is preferable that a dimension WL in the major axis direction of the opening is 20 mm or more and 50 mm or less. If the dimension WL is smaller than this range, it becomes difficult to insert the tube into the opening. On the contrary, if the dimension WL is larger than this range, the tube inserted into the opening tends to fall out of the opening due to vibration, external force, or the like.

  It is preferable that the medical container according to the present invention further includes a liquid passing portion that communicates the inside and the outside of the container main body, and the opening is formed in the vicinity of the liquid passing portion. Accordingly, when the medical container is suspended with the liquid passing portion on the lower side, the opening is also positioned on the lower side. Therefore, even an operator with a short height can easily perform tube insertion / extraction work with respect to the opening. Here, the opening is formed "near" the liquid passage part. When the medical container is viewed in plan, the opening is the same as the side where the liquid passage part is provided with respect to the center of the container body. In a narrower sense, the distance between the opening and the liquid passing part is less than the distance from the center of the container body to the liquid passing part (preferably less than half of this distance). Means.

  It is preferable that a second opening (through hole) is further formed in the seal region on the side opposite to the side on which the liquid passage portion of the container body is provided. Accordingly, when the container is suspended from the hanger using the second opening, the liquid passing portion faces downward. Therefore, the liquid substance in the container body can be discharged using gravity.

  In the medical container set of the present invention, it is preferable that the curvature radius RL at both ends in the major axis direction of the opening (first opening) is smaller than the curvature radius of the outer peripheral surface of the tube. Thus, when the tube is inserted into the opening, the tube contacts the edge of the opening at two points. Therefore, the tube can be held more stably at the edge of the opening.

  It is preferable that the maximum dimension WS of the opening in a direction orthogonal to the major axis direction of the opening is larger than the outer diameter of the tube. Thereby, the operation | work which inserts a tube in an opening or extracts from an opening becomes easy.

  It is preferable that the tube can be inserted into the opening and held. Thereby, the handleability of the nutrition set containing a long tube improves.

  Hereinafter, the present invention will be described in detail with reference to specific embodiments. However, the present invention is not limited to the following embodiments.

  FIG. 1 is a front view showing a schematic configuration of a medical container (hereinafter simply referred to as “container”) 1 according to an embodiment of the present invention. The container 1 of the present embodiment includes a container main body 10 and a port (liquid passing portion) 50 for injecting a liquid material into the container main body 10 or taking out the liquid material stored in the container main body 10. .

  The container body 10 is a bag-like object (so-called pouch) formed by superposing two sheets of the same size having flexibility and flexibility and joining them at a seal region 11 at the periphery thereof. A port 50 is attached to the seal region 11 of the container main body 10 to communicate the inside and outside of the container main body 10.

  FIG. 2 is a perspective view of the port 50. The port 50 includes a cylindrical tubular portion 52 having a liquid passage hole 51 through which a liquid material passes, a seal portion 55 provided on one end of the tubular portion 52 or an outer peripheral surface in the vicinity thereof, and a tubular portion. And a cap mounting portion 56 formed on the outer peripheral surface on the other end side of the head 52.

  The seal portion 55 has a quadrangular prism shape whose bottom surface is substantially rhombus. By sealing the periphery of the two sheets with the seal portion 55 of the port 50 sandwiched between the periphery of the two sheets constituting the container body 10 (for example, heat sealing or ultrasonic sealing), the sealing region 11 The port 50 and the container body 10 can be joined and integrated at the same time as forming (see FIG. 1).

  The cap mounting portion 56 includes a male screw that is screwed with a female screw formed on a cap to which one end of a nutrition set (details will be described later) is connected. However, the cap attaching part 56 is not limited to this, It can comprise in the known shape which can engage with a cap and can attach a cap.

As shown in FIG. 1, the outer shape of the container body 10 has a substantially rectangular shape, and a port 50 is attached to the center of one short side (first short side) 10S ₁ of the pair of short sides. . The first short side 10S sealing region 11 along _one substantially the pair of openings diamond (first opening) 20a, 20b are formed. A pair of openings (first openings) 20a, 20b are disposed the port 50 so as to sandwich the first short side 10S ₁ direction. Of the pair of short sides of the container body 10, a substantially circular second opening 32 and a pair of pairs are provided in the seal region 11 along the short side (second short side) 10S ₂ on which the port 50 is not attached. Substantially semicircular third openings 33a and 33b are formed. The second opening 32 is located approximately in the middle of the second short sides 10S _2, a pair of third openings 33a, 33b are arranged so as to sandwich the second opening 32 in the second direction of the short sides 10S ₂ . Second linear fastener 12 which can be opened and closed repeatedly in the vicinity of the seal region 11 along the short sides 10S ₂ is provided. When the linear fastener 12 is opened, an opening communicating with the inside of the container body 10 is formed.

  The material of the sheet | seat which comprises the container main body 10 is not specifically limited, Usually, the composite sheet of 2 or more layers is used. For example, a composite sheet including an inner layer and an outer layer formed by selecting different materials from plastic materials such as polyethylene terephthalate, nylon, polypropylene, and polyethylene can be used. A thin film such as aluminum oxide or silica may be formed on the composite sheet as a barrier layer. It is preferable that at least one of the two sheets is transparent or translucent so that the amount of the liquid material in the medical container 10 can be confirmed. When two sheets are sealed by a general heat sealing method in a medical container, a heat seal layer is provided on the surface of each sheet facing the counterpart sheet.

  The port 50 is made of a material that is relatively hard compared to the container body 10 such as polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate, ethylene vinyl acetate copolymer, thermoplastic elastomer, polyacetal, and the like. Can be manufactured.

  Next, an example of the usage method of the container 1 of this embodiment is demonstrated.

  The container 1 is supplied to a hospital or the like in an empty state. In a working room such as a hospital, the adjusted liquid material is injected into the container 1. The injection of the liquid material may be performed through the liquid passage hole 51 of the port 50 or may be performed by opening the linear fastener 12. When the liquid material is injected through the linear fastener 12, when the thumb and index finger of one hand are inserted into the pair of third openings 33 a and 33 b, the container 1 can be held with the linear fastener 12 being largely opened. The liquid can be easily injected.

  After injecting a predetermined amount of liquid material into the container 1, a cap 60 is attached to the cap mounting portion 56 at the tip of the port 50 as shown in FIG. 3. The cap 60 is formed with a female screw (not shown) that is screwed with the male screw of the cap mounting portion 56 of the port 50. Furthermore, the nutrition set 70 including the tube 71 having flexibility is connected to the cap 60. Thereby, the inside of the container 1 and the tube 71 of the nutrition set 70 communicate with each other through the cap 60. The nutrition set 70 shown in FIG. 3 includes a rubber tube 72 that is externally inserted into a cylindrical body 61 provided in a cap 60 at one end of the tube 71, and a drip tube 73 and a clamp 74 for adjusting the flow rate. The male connector 75 is provided at the other end of the tube 71. In the state of FIG. 3, the clamp 74 is closed. The nutrition set is not limited to the nutrition set 70 shown in FIG. 3, and a known nutrition set (sometimes referred to as an infusion set) used when performing enteral nutrition or parenteral nutrition is appropriately selected. Can be used. Further, the connection method between the cap 60 and the nutrition set 70 is not limited to the method of coupling the cylindrical body 61 and the rubber tube 72 shown in FIG. For example, a method in which a hollow needle attached to one end of a tube of a nutrition set is inserted into a rubber stopper provided in the cap 60, a luer connection method, or the like may be used.

  Next, as shown in FIG. 4, for example, the container 1 is passed through a second opening 32 formed in the seal region 11 of the container body 10 by passing an S-shaped hook 92 suspended from the Illrigator base 91. It is suspended from the Illrigator platform 91. By suspending the container 1 using the second opening 32, the longitudinal direction of the container body 10 (direction parallel to the pair of long sides of the substantially rectangular container body 10) is made substantially parallel to the gravity direction, and the port 50 Can be directed downward. Accordingly, the liquid material filled in the container main body 10 can be discharged from the port 50 without remaining using gravity.

  Furthermore, as shown in FIG. 4, the tube 71 of the nutrition set 70 is bent into a substantially U shape (or substantially V shape) and inserted into the openings 20a and 20b. The portion 71c of the tube 71 inserted into the openings 20a and 20b is curved in a substantially Ω-shape, the substantially Ω-shaped portion 71c is engaged with the edges of the openings 20a and 20b, and the tube 71 is connected to the openings 20a and 20b. Held on the edge.

  As shown in FIG. 4, the container 1 is transported to the patient room where the patient is located in a state where the container 1 is suspended on the irrigator base 91 and the tube 71 of the nutrition set 70 is inserted and held in the openings 20a and 20b. . Thereafter, the tube 71 is extracted from the openings 20a and 20b, the male connector 75 of the nutrition set 70 is connected to the patient, the clamp 74 is opened, and the liquid in the container 1 is administered to the patient.

  According to this embodiment, since the long tube 71 of the nutrition set 70 can be inserted and held in the openings 20a and 20b of the container body 10 as shown in FIG. 4, the container to which the nutrition set 70 is connected. When conveying 1, the long tube 71 is not entangled. As will be described later, the tube 71 does not fall out of the openings 20a and 20b even if vibration or impact is applied to the container 1 or the nutrition set 70 when the container 1 is transported in the state of FIG. Therefore, the handleability of the nutrition set 70 connected to the container 1 is improved. Moreover, the handling property of the nutrition set 70 can be improved by an extremely simple and low-cost method in which the openings 20a and 20b are simply formed in the seal region 11 of the container body 10.

  In FIG. 4, it goes without saying that the tube may be inserted into only one of the openings 20 a and 20 b depending on the length of the tube 71 and the like.

  The principle that the edges of the openings 20a and 20b of the container body 10 hold the tube 71 as shown in FIG. 4 will be described with reference to FIGS. FIG. 5 is an enlarged view of a portion V of FIG. 1 including the opening 20a as seen along a direction perpendicular to the surface of the seal region 11. FIG. 6 is an enlarged cross-sectional view showing the arrangement of the tube 71 inserted into the opening 20a and the edge of the opening 20a when viewed along a direction perpendicular to the surface of the seal region 11 of the container body 10. . In FIG. 6, the tube 71 is shown as tube sections 71 a and 71 b which are sectional views along the surface of the seal region 11. Since the outer peripheral surface of the tube 71 is a cylindrical surface, the outlines of the tube cross-sections 71a and 71b, which are cross-sectional views thereof, are circular. 7 is a cross-sectional view taken along line VII-VII in FIG. In FIG. 7, only the outline of the tube 71 is shown in order to simplify the drawing. Hereinafter, the opening 20a will be described with reference to FIGS. 5, 6, and 7. In this embodiment, the opening 20b passes through the opening 20a and the central axis of the container 1 (through the center of the port 50 and the long side of the container body 10). The following description of the opening 20a applies to the opening 20b as well.

As shown in FIG. 7, when the tube 71 is bent and inserted into the opening 20a, a portion 71c of the tube 71 that has passed through the opening 20a swells in a substantially Ω shape. The major axis of the opening 20a of the approximately Ω-shaped portion 71c (that is, the longer diagonal axis of the two diagonal axes of the approximately rhombic shape of the opening 20a) is a dimension W in the direction of the major axis 20L of the opening 20a. It is larger than the dimension WL. In this state, let us consider a case where a tensile force F _{0 in the} direction of pulling out the tube 71 from the opening 20a is applied to the two tubes 71 on the opposite side of the container body 10 from the substantially Ω-shaped portion 71c. In order for the approximately Ω-shaped portion 71c of the tube 71 to pass through the opening 20a by this pulling force F ₀ , the dimension W of the approximately Ω-shaped portion 71c is smaller than the major axis dimension WL of the opening 20a. The edge of the opening 20a must bend the substantially Ω-shaped portion 71c. At this time, an elastic recovery force F that resists the bending is generated in the substantially Ω-shaped portion 71c.

With this elastic recovery force F, as shown in FIG. 6, the tube cross-sections 71a and 71b are disposed in the opening 20a so as to be inscribed in the end edge of the opening 20a so that the interval between them is maximized. In the present embodiment, since the opening 20a has a substantially rhombus shape, the centers of the tube cross-sections 71a and 71b are arranged on the long axis 20L of the opening 20a. At this time, the tube cross section 71a is in contact with the sides 22a ₁ and 22a ₂ sandwiching one long axis end PLa at points Pa ₁ and Pa ₂ , and the tube cross section 71b is a side 22b ₁ and 22b ₁ sandwiching the other long axis end PLb. to contact 22b ₂ and the point Pb _1, Pb _2.

When the tensile force F ₀ is applied, the tube cross section 71a receives the pressing forces Fa ₁ and Fa ₂ from the sides 22a ₁ and 22a ₂ toward the center of the tube cross section 71a, and the tube cross section 71b receives the tubes from the sides 22b ₁ and 22b _2. The pressing forces Fb ₁ and Fb ₂ are applied toward the center of the cross section 71b.

The force that the edge of the opening 20a applies to the tube cross section 71a will be described with reference to FIG. The force applied to the tube cross section 71b is equal to the force applied to the tube cross section 71a and the short axis 20S of the opening 20a (that is, the shorter diagonal axis of the two diagonal axes of the approximately rhombus shape of the opening 20a). Is not shown in the figure. The pushing force Fa ₁ can be decomposed and force components Fa _1L parallel to the long axis 20L of the opening 20a, the parallel force component Fa _1S minor axis 20S of the opening 20a. Similarly, the pushing force Fa ₂ can be decomposed and the long axis 20L force component parallel to the Fa _2L opening 20a, to the short axis 20S parallel force component Fa _2S opening 20a. The elastic recovery force F generated in the substantially Ω-shaped portion 71c of the tube 71 when the tensile force F ₀ is applied is balanced with the resultant force of the force components Fa _1L and Fa _2L parallel to the long axis 20L.

The greater the pulling force F ₀ , the greater the force that the tube 71 receives from the edge of the opening 20a. That is, the force components Fa _1L and Fa _2L for reducing the dimension W of the substantially Ω-shaped portion 71c are increased, and the pressing forces Fa ₁ and Fa ₂ are increased accordingly. Accordingly, the frictional force between the tube cross section 71a and the two sides 22a ₁ and 22a ₂ increases. Further, the force components Fa _1S and Fa _2S parallel to the short axis 20S of the opening 20a are increased, whereby the sides 22a ₁ and 22a ₂ are locally disposed so that the dimension of the tube cross section 71a in the direction of the short axis 20S is reduced. Then, it is compressed and deformed and bites into the tube 71. A similar phenomenon occurs between the tube cross section 71b and the sides 22b ₁ and 22b ₂ . As a result, it becomes difficult to pull out the tube 71 from the opening 20a in the pulling force F _0.

  On the other hand, in FIG. 7, the tube 71 can be easily removed from the opening 20a by deforming the substantially 71-shaped portion 71c of the tube 71 with a finger so that the dimension W is reduced and pushing it back into the opening 20a. Can be extracted. Alternatively, only one of the two tubes 71 opposite to the substantially Ω-shaped portion 71c with respect to the container body 10 is pulled slightly strongly, or the container body 10 is opposite to the substantially Ω-shaped portion 71c. Even if both the two tubes 71 on the side are pulled strongly, the tube 71 can be extracted from the opening 20a.

  As described above, in the present embodiment, the edge shape of the opening 20a in the vicinity of both the long axis ends PLa and PLb in the long axis direction is substantially wedge-shaped so that the opening width becomes narrower toward the long axis ends PLa and PLb. Is formed. Accordingly, the tube cross-sections 71a and 71b inserted into the opening 20a are in contact with the edge of the opening 20a forming a substantially wedge shape at two points. As a result, the elastic recovery force F acting on the tube cross sections 71a and 71b are both supported at these two points, so that the tube 71 is stably held at the edge of the opening 20a. Therefore, when the container 1 is transported in a suspended state as shown in FIG. 4, the tube 71 falls from the openings 20 a and 20 b to the extent that vibration is applied to the tube 71 or the hand touches the tube 71. There is nothing. On the other hand, the tube 71 can be easily extracted from the openings 20a and 20b by, for example, deforming the substantially Ω-shaped portion 71c that has passed through the openings 20a and 20b with a finger so as to be deformed and pushed back into the openings 20a and 20b. Therefore, the handling property of the nutrition set connected to the medical container can be improved.

  As is clear from the above description, in the present invention, when the tube cross-sections 71a and 71b inserted into the opening 20a are arranged inscribed in the edge of the opening 20a so that the distance between them is maximized, the circular shape is obtained. Each of the tube cross sections 71a and 71b needs to contact the edge of the opening 20a at two points. As long as this is satisfied, the shape of the edge of the opening formed in the seal region 11 of the container body 10 is not limited to a substantially rhombus like the openings 20a and 20b of the above-described embodiment. For example, the edge shape of the opening may be a substantially parallelogram having two pairs of sides that are parallel to each other as shown in FIG. 9A, or a substantially trapezoid having a pair of sides that are parallel to each other as shown in FIG. 9B. Alternatively, as shown in FIG. 9C, it may be a substantially rectangular shape having no sides parallel to each other. Furthermore, as shown to FIG. 9D, the substantially hexagon which has three pairs of sides which are mutually parallel may be sufficient. Moreover, hexagons other than the substantially hexagon shown to FIG. 9D and polygons other than a square and a hexagon may be sufficient. Two adjacent sides of the polygon may be smoothly connected by a curve (for example, an arc) as shown in FIGS. 5 and 9A to 9D in order to reduce stress concentration. Furthermore, the shape of the edge of the opening does not need to be a polygon. For example, as shown in FIG. 9E, it may be substantially elliptical, and as shown in FIG. An ellipse shape in which both ends of the two are connected by a smooth curve may be used. Furthermore, as shown to FIG. 9G, the shape which has the narrow part which the opening width narrowed in the center part of a longitudinal direction may be sufficient.

  9A to 9G, the alternate long and short dash line 20L means the long axis of each opening. The long axis 20L of the opening is defined by a straight line connecting the two points PLa and PLb on the edge of the opening selected so as to maximize the opening width. These points PLa and PLb are called major axis ends. Let WL be the distance between the long axis ends PLa and PLb (that is, the maximum opening width of the opening). The maximum dimension of the opening in the direction orthogonal to the long axis 20L is WS.

9A to 9G, two circles 80a and 80b having the same diameter indicated by a two-dot chain line are cross sections along the surface of the seal region 11 of the container body 10 on the outer peripheral surface of the tube inserted into the opening. A virtual circle that assumes a shape. As described above, since the elastic recovery force F is generated in the tube inserted into the opening, the two circles 80a and 80b are the most spaced apart from each other like the tube cross sections 71a and 71b in the above embodiment. It is arranged inscribed in the edge of the opening so as to be large. Similarly to the above-described embodiment, the circle 80a is in contact with the edge of the opening at points Pa ₁ and Pa ₂ , and the circle 80b is in contact with the edge of the opening at points Pb ₁ and Pb ₂ .

  Whether or not each of the two circles 80a and 80b contacts the edge of the opening at two points depends on not only the shape of the edge of the opening but also the diameter D of the two circles 80a and 80b. The outer diameter of the tube used in the medical container of the present invention is not particularly limited, but is generally about 3.7 to 5 mm. Accordingly, in the present invention, when two virtual circles 80a and 80b having a certain value D of 3 mm or more and 6 mm or less as a diameter are arranged inscribed in the edge of the opening so that the distance between them is maximized, Each of the two virtual circles 80a and 80b needs to contact the edge of the opening at two points. In the present invention, it is sufficient that at least one diameter D of the virtual circles 80a and 80b having the same diameter that are in contact with the edge of the opening at two points is within a range of 3 mm to 6 mm. It is not necessary for all of the virtual circles 80a and 80b having the same diameter D as the diameter to contact the edge of the opening 20a at two points.

As shown in FIGS. 5, 9A to 9D, and 9G, an internal angle defined by two sides sandwiching the long axis end PLa is θLa, and an internal angle defined by two sides sandwiching the long axis end PLb is θLb. To do. The inner angles θLa and θLb are preferably acute angles (θLa <90 ° and θLb <90 °), and more preferably θLa <60 ° and θLb <60 °. In FIG. 8, if the elastic recovery force F is the same (that is, the force components Fa _1L and Fa _2L are the same), the smaller the inner angles θLa and θLb, the smaller the pressing forces Fa ₁ and Fa ₂ and the force components Fa _1S and Fa. _2S gets bigger. As the pressing forces Fa ₁ and Fa ₂ are increased, the frictional force between the edge of the opening and the tube inserted into the opening increases. Further, as the force components Fa _1S and Fa _2S are larger, the edge of the opening further compresses and deforms the tube and bites into the tube. Therefore, the tube can be held more stably at the edge of the opening.

  As shown in FIGS. 5, 9A to 9D, and 9G, the curvature radii of the edge of the opening in the vicinity of the long axis ends PLa and PLb are RLa and RLb. The values of the curvature radii RLa and RLb are not particularly limited, but the larger the value, the more the stress concentration near the long axis ends PLa and PLb can be reduced. However, it is preferable that the curvature radii RLa and RLb are both 3 mm or less. As described above, since the outer diameter of the tube used for the medical container of the present invention is generally 3.7 mm or more, if the curvature radii RLa and RLb of the major axis ends PLa and PLb are 3 mm or less, the tube is There is a high possibility of contact with the edge of the opening at two points.

  Moreover, it is preferable that curvature radii RLa and RLb are smaller than the curvature radius of the outer peripheral surface of the tube 71 of the nutrient set 70 connected to the port 50 of the container 1. Accordingly, when the tube 71 is inserted into the opening as shown in FIG. 4, the tube 71 can contact the edge of the opening at two points.

  As shown in FIGS. 5 and 9A to 9G, the dimension WL in the direction of the long axis 20L of the opening is appropriate in consideration of the outer diameter, mechanical strength (for example, bending rigidity) of the tube 71 inserted into the opening 20a. In general, it is preferably 20 mm or more and 50 mm or less. If the dimension WL is smaller than this range, it becomes difficult to insert the tube 70 into the opening. On the contrary, if the dimension WL is larger than this range, the tube 71 inserted into the opening is likely to fall out of the opening due to vibration, external force or the like.

  The maximum dimension WS of the opening in the direction orthogonal to the long axis 20L is preferably larger than the outer diameter of the tube 71 of the nutrient set 70 connected to the port 50 of the container 1. Thereby, the operation | work which inserts the tube 71 in an opening or removes from an opening becomes easy.

  As shown in FIGS. 5 and 9D to 9G, the edge shape of the opening is preferably symmetrical with respect to the long axis 20L. Thereby, since the tube 71 can be held in a balanced manner at the edge of the opening, the holding characteristics of the tube 71 are improved.

  In the present invention, the tube 71 is not particularly limited, and for example, a known tube constituting a nutrition set used when performing enteral nutrition, parenteral nutrition, or the like can be appropriately selected and used. The material is not particularly limited. For example, rubber, PVC (polyvinyl chloride), PP (polypropylene), PBD (polybutadiene), polyurethane, silicone, and polyethyl acetate are preferable. Among these, PVC is particularly preferable. The outer diameter of the tube 71 is generally about 3.7 to 5 mm, but a tube having an outer diameter outside this range may be used.

  The above embodiment is merely an example, and the present invention is not limited to this embodiment, and can be changed as appropriate.

  For example, in the container body 10 of the above embodiment, two sheets having the same shape are joined in a bag shape, but the present invention is not limited to this, and three or more sheets are joined in a bag shape. May be. Further, the shape of the container body in plan view need not be rectangular. Furthermore, the container body may not have the linear fastener 12. There is no limitation on the number, shape, and combination of the sheets constituting the container body of the present invention, and the container body includes a seal region in which at least two sheets are bonded together, and the nutrition set is contained in the seal region. The 1st opening for inserting a tube should just be formed.

  In said embodiment, although the tube 71 of the nutrient set 70 was connected to the port 50 as a liquid flow part which connects the inside and outside of the container main body 10, this invention is not limited to this. For example, a nutrient set tube may be attached to the seal region 11 of the container body 10 in the same manner as the port 50 described above. In this case, the tube of the nutrition set functions as a liquid passing portion that communicates the inside and the outside of the container body 10.

  The arrangement of the liquid passage portion (for example, the port 50) in the container 1 and the arrangement of the openings formed in the seal region are not limited to the above embodiment. For example, the liquid passing part may be attached to one of the four corners of the container body having a rectangular shape in plan view. In this case, it is preferable that the second opening 32 for suspending the container 1 is provided at a corner that is at a diagonal position with respect to the corner to which the liquid passing portion is attached. Thereby, since the opening of the liquid passing portion can be suspended downward along the direction of gravity, the liquid material in the container body 10 can be discharged using gravity.

  Further, the number of liquid passing portions that communicate between the inside and the outside of the container 1 is not limited to one and may be two or more.

  A scale for visually determining the amount of the liquid substance in the container body 10 in a state where the container 1 is suspended may be provided on the container body 10 by printing or the like.

  The number of the first openings for inserting the tubes of the nutrition set does not need to be two as in the above-described embodiment, and may be one or three or more. When a plurality of first openings are provided, it is not necessary to insert a tube of the nutrition set into all of the plurality of first openings, and the tube is only in a part of the plurality of first openings according to the length of the tube. It goes without saying that can be inserted. Further, the shapes and sizes of the edges of the plurality of first openings need not all be the same.

  Although the long axis 20L of the first opening is inclined with respect to the central axis of the container 1 in the above embodiment, the present invention is not limited to this. Generally, in a state where the container 1 is suspended using the second opening, the tube can be stably held as the angle formed by the major axis 20L direction of the first opening with respect to the horizontal direction becomes smaller.

  Further, the arrangement position of the first opening only needs to be within the seal region, and is not limited to the above embodiment. However, if the container 1 is disposed near the liquid passing part for allowing the liquid substance in the container 1 to flow out, the first opening is also located on the lower side when the container 1 is suspended with the liquid passing part on the lower side. It is preferable because even a worker with a short height can easily perform the insertion / extraction operation of the tube with respect to the first opening.

  A container 1 as shown in FIG. 1 was prepared by stacking two substantially rectangular sheets of 30 cm in length and 14 cm in width with the port 50 on one short side and heat-sealing the periphery. . As the sheet, a composite sheet having a thickness of 0.1 mm including a nylon layer and a polyethylene layer was used. In the seal region 11, substantially rhombic openings 20a and 20b as shown in FIG. The major axis 20L of the openings 20a and 20b was inclined 45 ° with respect to the central axis of the container 1. The dimension WL in the major axis 20L direction of the openings 20a and 20b was 30 mm, and the dimension WS in the minor axis 20S direction was 10 mm. The edges of the openings 20a and 20b in the vicinity of the major axis ends PLa and PLb are formed in an arc shape having a curvature radius RLa and RLb of 1 mm, and the edge of the opening in the vicinity of the minor axis end PS has a curvature radius RS of 5 mm. It was formed in an arc shape.

  A nutrition set 70 including a tube made of polybutadiene having an outer diameter of 5 mm was connected to the port 50.

  The container 1 to which the nutrition set 70 was connected was suspended as shown in FIG. 4, and the tube 70 was inserted into the openings 20a and 20b. The tube 70 did not fall out of the openings 20a and 20b to such an extent that vibration was applied to the container 1 or the tube 70 was pulled lightly.

  The field of use of the present invention is not particularly limited, but can be preferably used as a medical container and a medical container set used when performing enteral nutrition, parenteral nutrition, or the like.

FIG. 1 is a front view showing a schematic configuration of a medical container according to an embodiment of the present invention. FIG. 2 is a perspective view showing a schematic configuration of a port used in the medical container according to the embodiment of the present invention. FIG. 3 is a diagram showing a schematic configuration of a medical container according to an embodiment of the present invention in which a nutrition set is connected to a port. FIG. 4 is a view showing a state in which a medical container according to an embodiment of the present invention in which a nutrition set is connected to a port is suspended with the port facing downward. FIG. 5 is an enlarged view of the portion V of FIG. 1 including the opening as viewed along a direction perpendicular to the surface of the seal region. FIG. 6 is an enlarged cross-sectional view illustrating a state where a tube is inserted into an opening formed in the medical container according to the embodiment of the present invention. 7 is a cross-sectional view taken along the line VII-VII in FIG. FIG. 8 is an enlarged cross-sectional view illustrating the force that the tube inserted into the opening formed in the medical container according to the embodiment of the present invention receives from the edge of the opening. FIG. 9A is an enlarged front view showing another example of the shape of the edge of the opening that holds the tube formed in the seal region of the medical container of the present invention. FIG. 9B is an enlarged front view showing still another example of the shape of the edge of the opening that holds the tube formed in the seal region of the medical container of the present invention. FIG. 9C is an enlarged front view showing still another example of the shape of the edge of the opening for holding the tube formed in the seal region of the medical container of the present invention. FIG. 9D is an enlarged front view showing still another example of the shape of the edge of the opening that holds the tube formed in the seal region of the medical container of the present invention. FIG. 9E is an enlarged front view showing still another example of the shape of the edge of the opening for holding the tube formed in the seal region of the medical container of the present invention. FIG. 9F is an enlarged front view showing still another example of the shape of the edge of the opening for holding the tube formed in the seal region of the medical container of the present invention. FIG. 9G is an enlarged front view showing still another example of the shape of the edge of the opening for holding the tube formed in the seal region of the medical container of the present invention.

Explanation of symbols

1 Medical container (container)
DESCRIPTION OF SYMBOLS 10 Container main body 11 Sealing area | region 12 Linear fastener 20a, 20b Opening (1st opening)
32 2nd opening 33a, 33b 3rd opening 50 port (liquid passing part)
51 Fluid passage hole 52 Tubular portion 55 Seal portion 56 Cap mounting portion 70 Nutritional set 71 Tube 71a, 71b Tube cross section 80a, 80b Virtual circle

Claims (9)

A medical container provided with a bag-like container body in which a flexible sheet is bonded in a seal region,
An opening is formed in the seal region;
The opening includes a flexible tube bent into a substantially U shape or a V shape and inserted into the opening, and a portion of the tube inserted into the opening is bent into a substantially Ω shape. For holding the tube by engaging a portion curved in a substantially Ω shape with an edge of the opening,
A medical container characterized in that the shape of the edge of the opening viewed along the direction perpendicular to the surface of the seal region satisfies the following conditions.
[Conditions] The shape of the edge of the opening is a substantially rhombus shape in which the inner angles at both ends in the major axis direction are acute angles, and two virtual circles of the same diameter having a value D of 3 mm or more and 6 mm or less as a diameter. Are arranged so as to be inscribed in the edge of the opening so that the distance between them is maximized, the two virtual circles do not overlap each other and both contact the edge of the opening at two points.   2. The medical container according to claim 1, wherein the curvature RL at both ends in the major axis direction of the opening is 3 mm or less.   The medical container according to claim 1, wherein a dimension WL in the major axis direction of the opening is 20 mm or more and 50 mm or less. A liquid passing part for communicating the inside and outside of the container body;
The medical container according to claim 1, wherein the opening is formed in the vicinity of the liquid passing portion.   The medical container according to claim 4, wherein a second opening is further formed in the seal region on the side opposite to the side on which the liquid passing portion of the container body is provided.   A medical container according to any one of claims 1 to 5 and a flexible tube for injecting a liquid material into the container body or taking out the liquid material stored in the container body. A medical container set comprising a nutrition set.   The medical container set according to claim 6, wherein the radius of curvature RL at both ends in the major axis direction of the opening is smaller than the radius of curvature of the outer peripheral surface of the tube.   The medical container set according to claim 6, wherein a maximum dimension WS of the opening in a direction orthogonal to the major axis direction of the opening is larger than an outer diameter of the tube.   The medical container set according to claim 6, wherein the tube can be inserted into the opening and held.

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