Medical resin container

Abstract

To provide a medical resin container that is less prone to cause splash back during the filling of a liquid.SOLUTION: A medical resin container 1 includes a container body 2 having a first sheet 2a and a second sheet 2b, wherein the container body 2 includes a bag-shaped chamber 20 formed by the first sheet and the second sheet, a discharge portion 5 is formed at one lower corner of the chamber 20, an extended portion 6, which extends upward from a part of the chamber 20, is formed at an upper corner positioned diagonally across from the discharge portion 5 of the chamber 20, the extended portion 6 is located on the central side in the left-right direction relative to a seal portion 21 that is formed outside one lateral edge of the chamber 20, and a through-hole 7 for opening and hanging is formed.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a medical resin container used as a supply source for nutrients and the like in a nutrition supply system. [Background technology]

[0002] Enteral nutrition therapy is known as a method of administering nutrients and medicines directly to the digestive tract for patients who have difficulty taking food orally due to injuries, dementia, etc. Enteral nutrition therapy uses a nasal catheter inserted into the stomach or duodenum from the patient's nasal cavity, or a percutaneous endoscopic gastrostomy (PEG) catheter inserted through a gastrostomy created in the abdomen.

[0003] These catheters are used to administer liquids such as enteral nutrients, warm water, or medicines, but in this case, it is necessary to inject the liquid to be administered to the patient into an empty medical plastic container beforehand.

[0004] A known example of a conventional medical resin container is the pouch container described in Patent Document 1. The pouch container described in this document includes at least a top sheet (11) constituting a top portion and a back sheet (12) constituting a back portion, an opening (15) connected to a filling space (14) for the contents surrounded by the sheets is formed between the top sheet (11) and the back sheet (12) at the top of the container, and a zipper (16) for closing the opening is provided in the pouch container, in which the top sheet (11) and the back sheet (12) extend above the zipper (16) and have a pair of extension pieces (20A, 20B) formed so as to be able to be separated from each other, and each of the extension pieces (20A, 20B) is formed with an insertion portion (21A, 21B) for allowing a finger to be inserted (Patent Document 1). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2014-31199 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, in the above-mentioned conventional pouch container, the sealed edge portion is protruded into the filling section and a hanging hole is provided on the protruding portion, so that when filling the filling section with a liquid, the liquid poured into the filling section hits the protruding portion around the hanging hole and splashes back, which may contaminate the worker's hands and the surrounding area.

[0007] An object of the present invention is to provide a medical resin container that is less likely to cause splashing when filled with a liquid. [Means for solving the problem]

[0008] That is, the above problems are solved by the following configuration of the present invention. (1) The medical resin container of the present invention is a medical resin container including a container body having a first sheet and a second sheet, the container body having a bag-shaped chamber formed by the first sheet and the second sheet, a discharge portion formed at one lower corner of the chamber, an extension portion formed by a part of the chamber formed by the first sheet and the second sheet extending upwardly at an upper corner diagonally opposite to the discharge portion of the chamber, the extension portion being formed toward the center in the left-right direction from a seal portion formed outside one side edge of the chamber, and having a through hole for opening and hanging (hereinafter referred to as the "first medical resin container of the present invention").

[0009] According to the first medical resin container of the present invention, since the through hole is formed in the extension portion, there is no need to form a protrusion for forming a hanging hole within the chamber, and there is little risk of the injected liquid hitting the protrusion and bouncing back.

[0010] (2) Furthermore, the medical resin container of the present invention is characterized in that the through hole has a pair of straight line portions along a first imaginary line connecting the discharge hole of the discharge portion and the center of the through hole, a semicircular portion connecting the upper ends of the pair of straight line portions, and a base portion connecting the lower ends of the pair of straight line portions and perpendicular to the first imaginary line (hereinafter referred to as the "second medical resin container of the present invention").

[0011] According to the second medical resin container of the present invention, when the container body is hung, frictional forces against the hook may cause the container body to tilt at an angle different from the desired angle when hung, but the straight portion of the through hole and the bottom portion perpendicular to it can indicate the horizontality when hung, and the posture of the container body can be adjusted to the appropriate angle.

[0012] (3) Furthermore, the medical resin container of the present invention is characterized in that the chamber has a recessed portion at the lower corner where the discharge portion is formed, which bulges outward from the lower end and lower end edge of the other side edge (hereinafter referred to as the "third medical resin container of the present invention").

[0013] According to the third medical resin container of the present invention, the lower corner has a recessed portion that bulges outward from the lower end of the side edge and the lower edge, so that any remaining liquid can be collected in one recessed area in the corner, thereby reducing the amount of remaining liquid.

[0014] (4) Furthermore, the medical resin container of the third invention is characterized in that a second imaginary line connecting the boundary between the recessed portion and the other side edge and the boundary between the recessed portion and the lower edge extends along the bottom portion (hereinafter referred to as the "medical resin container of the fourth invention").

[0015] According to the fourth medical resin container of the present invention, the second imaginary line which becomes the upper edge of the recess when the container body is tilted in a hanging position extends along the bottom edge, and is therefore roughly perpendicular to the imaginary vertical line when hanging, allowing the remaining liquid to be collected in one place.

[0016] (5) Furthermore, the medical resin container of the present invention is characterized in that a tubular body forming the discharge hole is fixed to the discharge section, and an upper portion of the tubular body is arranged in an exposed state within the internal space of the chamber (hereinafter referred to as the "fifth medical resin container of the present invention").

[0017] According to the fifth medical resin container of the present invention, a tubular body is fixed which penetrates the seal portion around the periphery of the discharge portion to form a discharge hole, and the upper end of the tubular body is positioned in an exposed state within the internal space of the chamber. Therefore, the portion of the tubular body which is positioned within the seal portion has a reduced diameter, while the portion exposed within the internal space of the chamber has a relatively increased diameter, and this exposed portion acts as a retainer so that the tubular body can be firmly fixed to the discharge portion.

[0018] (6) Furthermore, the medical resin container of the fifth aspect of the present invention is characterized in that the upper end of the tubular body is positioned on the second imaginary line or on the side of the recessed portion from the second imaginary line (hereinafter referred to as the "medical resin container of the sixth aspect of the present invention").

[0019] According to the medical resin container of the sixth aspect of the present invention, the upper end of the tubular body is disposed on the second imaginary line or on the recessed portion side of the second imaginary line, so that the remaining liquid can be further reduced. Effect of the Invention

[0020] The medical resin container of the present invention has the advantage that there is very little risk of splashing when a liquid material is filled into the filling portion. [Brief description of the drawings]

[0021] [Figure 1] FIG. 1 is a plan view showing one embodiment of a medical resin container. [Diagram 2] FIG. 2 is a partially enlarged plan view showing a lower corner where a discharge portion is formed in one embodiment of a medical resin container. [Diagram 3] FIG. 3 is a partially enlarged cross-sectional view showing a zipper structure of one embodiment of a medical resin container. [Figure 4]FIG. 4 is a plan view showing a manufacturing method of one embodiment of a medical resin container. [Diagram 5] FIG. 5 is a plan view showing a method of using one embodiment of a medical resin container. [Figure 6] FIG. 6 is a front view showing a method of using one embodiment of a medical resin container. [Figure 7] FIG. 7 is a front view showing a state in which a medical resin container is suspended in a method of using the medical resin container according to one embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] Hereinafter, one embodiment of the present invention (hereinafter referred to as "the present embodiment") will be described with reference to the accompanying drawings. Fig. 1 is a plan view showing a first embodiment of a medical resin container 1 of the present invention.

[0023] 1, the medical resin container 1 has a container body 2 consisting of a first sheet 2a and a second sheet 2b. That is, the container body 2 is formed by bonding together the resin films that make up the first sheet 2a and the second sheet 2b.

[0024] The means for bonding the first sheet 2a and the second sheet 2b together is not particularly limited, but in this embodiment it is adhesion, more specifically heat sealing.

[0025] The container body 2 is formed in a generally vertically long rectangle, and three sides thereof are bonded, i.e., heat sealed, except for an upper opening 3 which is the hanging side. More specifically, a first side seal portion 21 which is a seal portion formed on one side edge of the container body 2, a lower seal portion 22 which is a seal portion formed on the lower edge, and a second side seal portion 23 which is a seal portion formed on the other side edge are heat sealed to form a bag-shaped chamber 20.

[0026] Therefore, a first side seal portion 21 is formed outside one side edge 211 of the chamber 20, a lower seal portion 22 is formed outside the lower edge 221, and a second side seal portion 23 is formed outside the other side edge 231.

[0027] The widths of the first side seal portion 21, the lower seal portion 22 and the second side seal portion 23 are not particularly restricted, but may be any width that ensures the necessary adhesive strength and allows the sealing member (die or seal bar) to be appropriately positioned, for example, approximately 5 to 20 mm, excluding the portions that are set to be wide or narrow.

[0028] The capacity of the chamber 20 is set according to the amount of nutrients or the like administered per time required in a typical nutritional system, and is not particularly restricted, but is, for example, about 500 to 1500 mL.

[0029] At one of the lower corners, which is the intersection of the first side seal portion 21 and the lower seal portion 22, a corner seal portion 26 is formed by the seal portion expanding toward the inside of the chamber 20 due to a curved corner portion 25, and a secondary through hole 9 is further formed in the corner seal portion 26 for engaging a connector, etc.

[0030] At the other lower corner, which is the intersection between the second side seal portion 23 and the lower seal portion 22, a discharge portion 5 is formed on the side of the lower seal portion 22 biased toward the center by a bulge 232 that protrudes inward from the second side seal portion 23. A tubular body 51 is disposed in this discharge portion 5 and serves as a discharge hole to form a flow path for the liquid.

[0031] The tubular body 51 desirably has a size and shape for an internal flow path that does not impede the flow of the liquid, since it forms a flow path that serves as a discharge hole for the liquid contained in the chamber 20. The material for the tubular body 51 may be either soft or hard resin, but in this embodiment, a soft medical tube used in an enteral nutrition system is used.

[0032] Although the length of the tubular body 51 is shown short in the illustrated example, it can be set to any length as required.

[0033] The tubular body 51 is fixed to the discharge part 5 by heat-sealing the reseal part 53. At this time, the upper part 511 of the tubular body 51 is exposed inside the chamber 20, and the fixing part 512 of the tubular body 51 is sandwiched and sealed between the first sheet 2a and the second sheet 2b of the reseal part 53, and the outer diameter of the fixing part 512 is shrunk. In addition, the lower part 513 of the tubular body 51 extends outside the container body 2.

[0034] The upper portion 511 of the tubular body 51 becomes relatively larger in diameter due to the contraction of the outer diameter of the fixing portion 512, and as a result, acts as a retainer against the force to pull the tubular body 51 outward.

[0035] Around the upper part 511 of the tubular body 51, a recessed part 52 is formed where the space of the chamber 20 bulges outward from the lower end of the lower edge 221 and the other side edge 231. That is, the edge of the reseal part 53 on the inside side of the chamber 20 and the upper end of the tubular body 51 are in the same position, but around the upper part 511 of the tubular body 51, the reseal part 53 has a non-sealed part that spreads in a V shape from the fixed part 512 towards the periphery of the upper end of the tubular body 51 so as to expose the upper part 511.

[0036] As a result, a space is formed in the V-shaped unsealed portion of the reseal portion 53, which becomes a recess 52 facing outwardly of the chamber 20. The upper end of the tubular body 51 is located at the same position as the lower edge 221 of the chamber 20 or lower than that.

[0037] Also, as shown in FIG. 2, a second virtual line L2 connecting the boundary between the recessed portion 52 and the side edge 231 of the chamber 20 and the boundary between the recessed portion 52 and the lower edge 221 of the chamber 20 approximately coincides with the liquid level of the liquid contained in the chamber 20 and is perpendicular to the ideal virtual vertical line when the medical resin container 1 filled with the contents is hung.

[0038] The reseal portion 53 can be formed by heat sealing the relevant portion using a sealing member (a die or a seal bar) that matches the shapes of the tubular body 51 and the recessed portion 52.

[0039] An extension portion 6 is formed by a part of the chamber 20 extending upward at the upper corner diagonally opposite the lower corner where the discharge portion 5 is formed. In other words, the extension portion 6 is formed above the opening on the first side seal portion 21 side.

[0040] The extension portion 6 is formed by simply extending the first sheet 2a and the second sheet 2b upward, and most of its portion is formed on the first side seal portion 21 side of an imaginary center line CL that passes through the width center of the chamber 20 and extends in the vertical direction.

[0041] Further, an outer edge 61, which is the side edge of the extension portion 6 on the first side seal portion 21 side, is formed closer to the center than the first side seal portion 21. In other words, the outer edge 61 of the extension portion 6 is located at the same position as the side edge 211 of the chamber 20 or closer to the imaginary center line CL than this.

[0042] Since no part of the extension portion 6 is heat-sealed, the first extension portion 6a and the second extension portion 6b originating from the first sheet 2a and the second sheet 2b exist independently. In the following description, for convenience, components common to the first extension portion 6a and the second extension portion 6b are described using a single reference numeral.

[0043] The extension portion 6 is formed from an outer edge 61 extending upward in a straight line from the upper end on the first side seal portion 21 side, an upper edge 62 which curves in an outwardly convex arc from this outer edge 61 and then slopes slightly upward in a direction along the upper edge of the opening 3, and an inner edge 63 which curves in an outwardly convex arc from the central end of the upper edge 62 and then has a straight portion sloped toward the center, and which curves inwardly convexly near the upper edge of the opening 3 to overlap the upper edge of the opening 3 at a position slightly beyond the imaginary center line CL.

[0044] As described above, the extension portion 6 is formed in a trapezoid shape with curved corners. A through hole 7 is formed in the extension portion 6 at a position close to the imaginary center line CL. Note that, in the area of ​​the extension portion 6 close to the first side seal portion 21, information such as "Caution" and "Instructions" is displayed as necessary.

[0045] The through hole 7 has a tubular body 51 which serves as a discharge hole of the discharge section 5, a pair of straight sections 71, 72 along a first imaginary line L1 which connects the center of the through hole 7, a semicircular section 73 which connects the upper ends of the pair of straight sections 71, 72, and a base section 74 which connects the lower ends of the pair of straight sections 71, 72 and is perpendicular to the first imaginary line L1.

[0046] Here, the center of the tubular body 51 defining the first virtual line L1 is the center of a circle appearing in the cross section of the tubular body 51, and the position may be anywhere on the tubular body 51, but is preferably the midpoint in the longitudinal direction of the fixing part 512. On the other hand, the center of the through hole 7 refers to the midpoint in the vertical and horizontal directions when the inverted U-shaped through hole 7 is stood upright, but may be the central part of the base part 74 for convenience.

[0047] By forming the through-hole 7 in an inverted U-shape or a bell-shape, when the hanging device h is hung from a hook or other such hanging device h, the hanging device h can be naturally positioned at the top of the semicircular portion 73 (see FIG. 7). Also, when a finger is inserted into the through-hole 7, the semicircular portion 73 is positioned so as to fit along the finger.

[0048] The first virtual line L1 is inclined at a certain angle with respect to the virtual center line CL. Specifically, the inclination angle θ of the first virtual line L1 with respect to the virtual center line CL is preferably 15° to 25°, and more preferably 18° to 22°.

[0049] The first virtual line L1 is designed to roughly coincide with the ideal vertical line when the medical resin container 1 is suspended by the through hole 7 with a certain amount of liquid (for example, 70% or more of the capacity) poured into the chamber 20.

[0050] Therefore, the liquid surface of the liquid in the chamber 20 is generally aligned along the second imaginary line L2.

[0051] The first extending portion 6a and the second extending portion 6b of the extending portion 6 are preferably bent outwardly so as to move away from each other.

[0052] A zipper 8 is preferably formed at the opening 3 of the medical resin container 1. The zipper 8 has the function of sealing the opening 3 so as to be freely openable and closable, and is therefore formed and disposed from the first side seal portion 21 side of the opening 3 to the second side seal portion 23 side.

[0053] In this embodiment, since emphasis is placed on the sealing function, a zipper 8 having a structure as shown in Fig. 3 is used. Fig. 3 is a partial cross-sectional view showing a cross section along an imaginary center line CL of the zipper 8, and other components of the medical resin container 1 are omitted to make the structure easier to understand.

[0054] 3 has a band-shaped male base material 810 and a female base material 820 arranged opposite each other, with a first male member 811 having a sawtooth cross section and a second male member 812 having an inverted J-shape or hook-shaped cross section formed at a predetermined distance on the male base material 810. These first male member 811 and second male member 812 are formed in stripes in the longitudinal direction of the zipper 8.

[0055] On the other hand, on the female side base material 820, a first female member 821 having a cross-sectional C-shape into which the head of the first male member 811 can be fitted is formed at a position facing the first male member 811, and a second female member 822 having a cross-sectionally partially cut-out C-shape or a hook-shaped cross section is formed adjacent to the first female member 821 at a position facing the second male member 812. These first female member 821 and second female member 822 are formed in a stripe shape in the longitudinal direction of the zipper 8.

[0056] The first male member 811 and the second male member 812, and the first female member 821 and the second female member 822 are arranged opposite each other between the male base material 810 and the female base material 820, so that when the male base material 810 and the female base material 820 are pressed from both outsides so as to bring them closer together, the tip of the C-shape of the first female member 821 is pushed by the head of the first male member 811 and deforms so as to open, and the head of the first male member 811 fits into the inside of the first female member 821 and is engaged.

[0057] Similarly, the hook-shaped portion of the second male member 812 and the hook-shaped portion of the second female member 822 deform relative to each other, and the hooks engage and lock. This seals the zipper 8. To open the zipper, the first extension portion 6a and the second extension portion 6b of the extension portion 6 are pulled outward, respectively, and the locking structures between the first male member 811 and the first female member 821, and between the second male member 812 and the second female member 822 are released by the reverse operation to the above, allowing the zipper to be opened.

[0058] The zipper 8 may be formed in a similar configuration to a zipper used in general pouch products or food storage bags, or a fastener.

[0059] The zipper 8 is formed by cutting the long zipper body having the above-mentioned structure to a predetermined length and heat sealing it to the upper part of the chamber 20. For this reason, the fixing surfaces of the male base material 810 and the female base material 820 must at least have heat sealability.

[0060] Specifically, a zipper body 81 having a first male member 811, a first female member 821, a second male member 812, and a second female member 822 is sandwiched between an upper heat-sealed portion 82 and a lower heat-sealed portion 83, and a male substrate 810 and a female substrate 820 are fixed to a first sheet 2a and a second sheet 2b, respectively, by heat sealing.

[0061] The resin film constituting the first sheet 2a and the second sheet 2b (hereinafter referred to as the sheet base material) not only has the basic performance required for a packaging material such as a pouch, but also requires heat sealability, since each sealed portion is formed by heat sealing.

[0062] The sheet substrate may be a multi-layer sheet having a base film layer and a sealant layer that provides heat sealability. If gas barrier properties are required, a gas barrier layer may be provided between the base film layer and the sealant layer.

[0063] The lamination of each layer can be carried out by a general lamination method, such as dry lamination using an adhesive dissolved in a solvent, solventless lamination using an adhesive that does not use an organic solvent, or extrusion lamination in which a molten resin is extruded with an extruder to form a thin film and then bonded together.

[0064] Examples of the film constituting the base film layer include polyester resins such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT), polycarbonate (PC), etc., polyolefin resins such as polyethylene (PE), polypropylene (PP), biaxially oriented polypropylene (OPP), etc., and other single-layer or two-layer or more stretched or unstretched films made of polyamide (nylon-6, nylon-66), polyacrylonitrile (PAN), polyimide (PI), polyvinyl chloride (PVC), polyvinylidene chloride (PVDC), polymethyl methacrylate (PMMA), polyethersulfone (PES), ethylene-vinyl alcohol copolymer (EVOH), etc. Among these, polyethylene terephthalate (PET), biaxially oriented polypropylene (OPP), and polyamide (nylon-6, nylon-66) are preferred.

[0065] Examples of films constituting the sealant layer include one or more layered oriented or unoriented films composed of low density polyethylene (LDPE), linear low density polyethylene (LLDPE), ethylene-propylene copolymer (EP), unoriented polypropylene (CPP), biaxially oriented nylon (ONY), ethylene-vinyl acetate copolymer (EVA), etc. Among these, low density polyethylene (LDPE), linear low density polyethylene (LLDPE), and unoriented polypropylene (CPP) are preferred.

[0066] The combined thickness of the sheet substrate and the sealant layer is not particularly restricted, but is, for example, about 0.01 mm or more and 0.3 mm or less.

[0067] The material for the tubular body 51 may be any medical tube used in ordinary enteral nutrition systems, such as polyurethane, polyvinyl chloride, cyclic polyolefin, polypropylene, polycarbonate, polyethylene, polyethylene terephthalate, polyethylene naphthalate, EVA (ethylene vinyl acetate copolymer), polybutadiene, etc.

[0068] Next, a method for manufacturing the medical resin container 1 of this embodiment will be described with reference to FIG.

[0069] (1) First, a film substrate having a base film layer and a sealant layer and having necessary markings printed on both sides, and a long zipper body are prepared.

[0070] (2) Next, the film substrate is cut at the center in the width direction while being conveyed in the longitudinal direction, and the two are laminated so that the sealant layer side faces inward (opposing surface). At this time, the zipper body is inserted at a predetermined position (lamination process).

[0071] (3) Next, as shown in FIG. 4, the pair of film substrates and the elongated bodies are heat-sealed so that they are properly joined at predetermined positions. Note that in FIG. 4, the outer edges of each film substrate, which should be visible at the top and bottom of the figure, are omitted.

[0072] Specifically, the zipper 8 is heat-sealed and joined using a heat sealing member not shown, and then the lower portion 20X (the portion surrounded by the dashed line in FIG. 4) is heated and joined using heat sealing members 101a, 101b (dies or seal bars) that are shaped to match the lower part of the first side seal portion 21, the bottom seal portion 22, and the lower part of the second side seal portion 23 (first joining process).

[0073] Thereafter, the side edges of adjacent medical resin containers 1 are joined together by a long heat sealing member 102 (die or sealing bar) placed at that location, and the remaining portion of the first side seal portion 21 and the remaining portion of the second side seal portion 23 are heat sealed together to simultaneously form the first side seal portion 21 and the second side seal portion 23 (second joining process).

[0074] (4) Next, the through holes 7 and the sub through holes 9 are punched out, and the outer shape of the medical resin container 1 is punched out together with the long zipper body as an outer frame (cutting process).

[0075] (5) Finally, after placing the tubular body 51 in the discharge part 5, the part is heat-sealed using a heat-sealing member (not shown) that forms a reseal part 53 conforming to the shapes of the tubular body 51 and the recessed part 52. This bonds the discharge part 5 and the tubular body 51 together, forms the recessed part 52, and produces the medical resin container 1 of this embodiment (third bonding process).

[0076] [Usage and Effects]

[0077] Next, the method of use and the effects of the medical resin container 1 of this embodiment will be described. As shown in FIG. 5, the index finger (second finger) P2 and the thumb (first finger) P1 are inserted into the through holes 7 of the first extension portion 6a and the second extension portion 6b, respectively, from the inside (or outside) of the first side seal portion 21 while scooping them up from below.

[0078] Next, when the inserted index finger (second finger) P2 and thumb (first finger) P1 are spread apart, the opening 3 opens, and the first extension portion 6a and the second extension portion 6b deform so as to collapse toward the index finger (second finger) P2 and thumb (first finger) P1, making contact along each finger.

[0079] 6, since the extension 6 is formed away from the first side seal portion 21, the through hole 7 is also located away from the first side seal portion 21. Therefore, the length from the part where the inserted index finger (second finger) P2 and thumb (first finger) P1 are located at the through hole 7 to the palm is approximately the same as the length from the through hole 7 to the edge of the first side seal portion 21, and the edge of the first side seal portion 21 abuts against the little finger ball Px of the palm, so that the medical resin container 1 stands upright and the opening 3 is held in a horizontal state.

[0080] In this way, the extension portion 6 in which the through hole 7 is formed is formed toward the center in the left-right direction from the first side seal portion 21, which is a seal portion formed on the side edge of the chamber 20. Therefore, when the thumb P1 and index finger P2 are inserted into the through hole 7 to open the opening (zipper) 3 of the medical resin container 1, the side edge of the first side seal portion 21 comes into contact with the palm (ball of the little finger) Px, and the medical resin container 1 can be held stably in an upright position, making it easier to inject liquid and preventing splashing.

[0081] In addition, Fig. 6 shows a state in which an index finger (second finger) P2 and a thumb (first finger) P1 are inserted from the outside into the through holes 7 of the first extending portion 6a and the second extending portion 6b, respectively. In this way, fingers can be inserted from both the inside and the outside into the through holes 7 of the first extending portion 6a and the second extending portion 6b.

[0082] In this state, the liquid material to be contained, such as nutrients, is poured into the container body 2. At this time, since there is no protruding structure inside the chamber 20, there is no risk of the poured liquid material splashing back.

[0083] Furthermore, since the extension portion 6 is formed toward the center in the left-right direction from the first side seal portion 21 formed on the side edge of the container body 2, the sealing member (die or seal bar) of the heat sealer that forms the first side seal portion 21 does not need to avoid the extension portion 6 and can be arranged to extend longer than the longitudinal length of the sealed portion.Even if the formation position of the sealing zipper 8 provided at the opening 3 of the container body 2 is shifted in the vertical direction, the first side seal portion 21, which is the side edge portion, can be formed according to the position of the shifted zipper 8, thereby preventing the occurrence of unsealed areas and leakage of liquid materials.

[0084] When the chamber 20 of the container body 2 is filled with a liquid material and hung by a hanging device h such as a hook of a stand, the container body 2 becomes inclined as shown in Figure 7 because the extension portion 6 having a through hole 7 for hanging is formed in the upper corner diagonally opposite the discharge portion 5.

[0085] In this state, a first virtual line L1 connecting the widthwise center of the through hole 7 (the center of the bottom portion 74) and the center of the inner diameter of the tubular body 51 approximately coincides with a virtual vertical line (not shown) hanging down from the widthwise center of the through hole 7 (the center of the bottom portion 74).

[0086] Therefore, the liquid level of the liquid material poured into and held in the chamber 20 is generally aligned with a second imaginary line L2 perpendicular to the first imaginary line L1 shown in FIG.

[0087] In addition, since the discharge section 5 is formed in the lower corner of the chamber 20, not only is there less liquid matter such as nutrients that accumulates in the corner of the inclined chamber 20 to begin with, but also there is less liquid matter remaining after the discharge from the discharge section 5, making it possible to reduce the amount of liquid matter that is wasted.

[0088] In addition, the upper edge of the tubular body 51 exposed inside the container body 2 of the discharge portion 5 is positioned at the same level as the upper end of the lower seal portion 22, which is the bottom edge of the chamber 20, or lower than that (the position when the container body 2 is upright).

[0089] Therefore, little liquid matter such as nutrients accumulates in the lower corners of the inclined chamber 20, and in principle remains only in the recessed portion 52 in the ideal inclined state as shown in the example.

[0090] Furthermore, the extension portion 6 having the through hole 7 is formed from the first side seal portion 21 side toward the widthwise center of the container body 2, and the through hole 7 is similarly formed toward the center, so that the inclination angle θ of the first virtual line L1 with respect to the virtual center line CL shown in Figure 1 is relatively small.

[0091] Therefore, even if the inclination changes to some extent from the ideal inclination state, the amount of liquid remaining after final discharge from the discharge portion 5 is small, and the amount of liquid that is wasted can be reduced.

[0092] In addition, since the inclination angle θ of the first imaginary line L1 with respect to the imaginary center line CL is relatively small, the poured liquid is less likely to spill, and there is little error between the scale and the actual capacity.

[0093] Furthermore, since the extension portion 6 is formed toward the center in the left-right direction from the first side seal portion 21 formed on the side edge of the container body 2, the sealing member (die or seal bar) of the heat sealer that forms the first side seal portion 21 does not need to avoid the extension portion 6 and can be arranged to extend longer than the longitudinal length of the first side seal portion 21.Even if the formation position of the sealing zipper 8 provided at the opening 3 of the container body 2 is shifted in the vertical direction, the side edge can be sealed according to the position of the shifted zipper 8, preventing leakage of liquid due to unsealed portions.

[0094] [Variations] Next, a modification of this embodiment will be described.

[0095] In this embodiment, an example has been described in which the first side seal portion 21, the lower seal portion 22 and the second side seal portion 23 are formed by heat sealing, but the present invention is not limited to this, and it is also possible to form them by other bonding methods, for example using a resin adhesive.

[0096] In this embodiment, an example has been shown and described in which the tubular body 51 is formed from a soft medical tube, but the present invention is not limited to this, and for example, the tubular body 51 may be formed from a hard resin material, or a connecting device such as a connector may be attached.

[0097] In this embodiment, an example in which the sub-through holes 9 are formed has been described, but the sub-through holes 9 may be omitted. [Explanation of symbols]

[0098] 1. Medical resin containers 2 Container body 2a 1st sheet 2b 2nd sheet 5 Discharge section 6 Extension 7 Through hole 20 Chambers 21 First side seal portion (side edge seal portion) 51 Tubular body (exhaust hole) 511 Upper part (of tubular body) 52 Recess 71 Straight section 72 Straight section 73 Semicircular section 74 Bottom CL Virtual center line L1 First virtual line L2 Second virtual line

Claims

1. A medical resin container including a container body having a first sheet and a second sheet, the container body has a bag-shaped chamber formed by the first sheet and the second sheet, A discharge port is formed at one lower corner of the chamber, an extension portion is formed by extending a part of the chamber upward at an upper corner diagonally opposite the discharge portion of the chamber; The medical resin container is characterized in that the extension portion is formed toward the center in the left-right direction from the seal portion formed on the outside of one side edge of the chamber, and has a through hole for opening and hanging.

2. The medical resin container according to claim 1, characterized in that the through hole has a pair of straight lines along a first imaginary line connecting the discharge hole of the discharge portion and the center of the through hole, a semicircular portion connecting the upper ends of the pair of straight lines, and a base portion connecting the lower ends of the pair of straight lines and perpendicular to the first imaginary line.

3. 3. The medical resin container according to claim 1, wherein the chamber has a lower corner where the discharge portion is formed, and a recessed portion that bulges outward from the lower end and the lower end edge of the other side edge.

4. The medical resin container according to claim 3, characterized in that a second virtual line connecting the boundary between the recessed portion and the other side edge and the boundary between the recessed portion and the lower edge extends along the bottom portion.

5. The medical resin container according to claim 4, characterized in that a tubular body forming the discharge hole is fixed to the discharge portion, and an upper portion of the tubular body is arranged in an exposed state within the internal space of the chamber.

6. 6. The medical resin container according to claim 5, wherein an upper end of the tubular body is disposed on the second imaginary line or on the side of the second imaginary line that faces the recessed portion.

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