JP2009154024A - Double-chamber container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a double-chamber container with a fused part to be hardly peeled off accidentally during the transportation or storage, but to be securely peeled, when necessary with a simple operation to open the container. <P>SOLUTION: This double-chamber container 1 includes a bag 2 having a mixed injection port 8 and an outlet 9. The bag 2 is made of a flexible sheet material 21, and is divided by a first fused part 6 fused in the shape of a belt into a first space 3 and a second space 4. A liquid 30 and a liquid 40 different in composition are stored in the first space 3 and the second space 4, respectively. The outlet 9 has a projection part 92 projecting into the bag 2, and a second fused part 7 is formed by fusing the seat material 21 in the shape of a belt to enclose the projection part 92. The second fused part 7 is not connected to the first fused part 6 to be independently separable. The second fused part 7 has an angled part 71, and the angle θ of the outside of the angled part 71 is 70-150° (e.g. 90°). <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a multi-chamber container for storing a liquid such as an infusion solution or a peritoneal dialysis solution.

  For example, when performing infusion to a patient, when using a mixture of two or more components, if they are mixed from the beginning and stored in a bag, they may deteriorate or deteriorate over time. .

  Therefore, the middle part of the bag made of the resin sheet material is fused in a band shape to form a partition portion, and the partition portion partitions the inside of the bag into two chambers (spaces). A multi-chamber container has been developed that separates and stores and separates (opens) the partition portion when necessary (for example, immediately before infusion) to mix the liquids in both chambers and use them (see, for example, Patent Document 1). .

  In the embodiment described in FIG. 1 of Patent Document 1, a liquid discharge pipe 5 is provided at one end of the multi-chamber container, and is fused in the vicinity of the inside of the discharge pipe 5 in the same belt shape as the partition section 4. The formed closing means 3 is provided, and when the internal pressure (hydraulic pressure) is increased by pressing the container, the closing means 3 is peeled and opened after the partition part 4 is peeled and opened.

  In this case, the opening order of the partition portion 4 and the closing means 3 is made by adjusting their fusion strength (peeling strength). As shown in FIG. Since it is composed of a linear fusion part parallel to the part 4 and has a higher fusion strength than the partition part 4, the internal pressure is blocked when the internal pressure is raised and the closing means 3 is peeled and opened. Since it acts on the edge of the means 3 evenly, it is difficult to cause peeling. Simply by setting the sealing strength of the closing means 3 to be stronger than that of the partition part 4, the closing means 3 cannot be easily peeled off by a normal peeling / opening method, and the closing means 3 can be easily and reliably removed. , Cannot be peeled / opened with good reproducibility (with uniform force).

  In order to cause the closure means 3 to be peeled off, it may be possible to partially provide a protrusion or a notch as the shape of the fused portion. Since it decreases locally, there is a risk of accidental (unintentional) peeling when force is applied during transportation or storage of the multi-chamber container.

JP-A-9-327498

  An object of the present invention is to provide a multi-chamber container that is less likely to be accidentally peeled off during transportation or storage, and that can be peeled off and opened reliably by a simple operation when necessary.

Such an object is achieved by the present inventions (1) to (11) below.
(1) a container body composed of a flexible sheet material;
A first fusion part formed by fusing the sheet material in a strip shape and partitioning the interior of the container body into a first space and a second space;
A port provided at an end portion or an outer peripheral portion of the container body and capable of communicating with the inside of the container body;
A multi-chamber container formed by fusing the sheet material in a band shape and having a second fusion part that surrounds an end of the port inside the container body or near the end to form a third space; There,
The port protrudes into the third space and includes a protrusion that can be opened by breaking, and the second fusion part is formed so as to surround the protrusion.
The first fusion part and the second fusion part are not connected to each other and can be peeled independently.
The said 2nd melt | fusion part has at least 1 corner | angular part, and the angle of the outer side of the said corner | angular part is 70-150 degrees, The multi-chamber container characterized by the above-mentioned.

  (2) The multi-chamber container according to (1), wherein the second fusion part has a substantially U-shaped planar shape.

  (3) The said 2nd melt | fusion part is a multi-chamber container as described in said (1) whose planar shape is a shape which makes a substantially L shape.

  (4) The multi-chamber container according to any one of (1) to (3), wherein chamfering or rounding (R) is formed outside the corner portion.

  (5) The multi-chamber container according to any one of (1) to (3), wherein a roundness (R) having a radius of curvature of 20 mm or less is formed outside the corner portion.

  (6) The multi-chamber container according to any one of (1) to (5), wherein the first space and the second space are filled with liquids having different compositions.

  (7) When pressing the space where the third space of the first space and the second space is adjacent, the first fusion portion is peeled off prior to the second fusion portion. The multi-chamber container according to (6) above.

  (8) The minimum force required to squeeze the space where the third space of the first space and the second space is adjacent to separate the first fused portion is the other. The multi-chamber container according to the above (6) or (7), which is smaller than the minimum force required for pressing the space and peeling off the first fusion part.

  (9) The amount of liquid filled in a space adjacent to the third space of the first space and the second space is equal to or larger than the amount of liquid filled in the other space. The multi-chamber container according to any one of the above (6) to (8).

(10) _A capacity of a space of the first space and the second space adjacent to the third space is C _A , and a volume of liquid filled in the space is V _A. When the capacity of the other space is C _B and the amount of liquid filled in the space is V _B ,
The filling rate K _A = V _A / C _A and the filling rate K _B = V _A / C _A satisfy the following relationship: K _A > K _B Chamber container.

  (11) The capacity of the space adjacent to the third space of the first space and the second space is 200 to 2000 ml, and the capacity is larger than the capacity of the other space ( The multi-chamber container according to any one of 1) to (10).

  As described above, according to the multi-chamber container of the present invention, for example, when necessary, while preventing the fusion part (particularly the second fusion part) from being accidentally peeled off other than when necessary during transportation or storage, for example. It can be peeled and opened reliably and easily with simple operations.

  In particular, when the port has a protruding portion, when the multi-chamber container 1 is sterilized by heating, blocking of the third space can be prevented, and the peelability of the second fused portion and the dischargeability of the discharged liquid can be reduced. It can be made good.

  Further, when chamfering or rounding (R) is formed at the corner, the stress concentration on the corner can be reduced when the second fused portion is peeled off, and the angle θ of the corner is relatively small. Even if it is a value, moderate peeling strength can be given and it contributes to the reproducibility improvement of peeling of a corner part.

  Further, when the first fusion part is peeled off prior to the second fusion part, it is possible to more reliably prevent the unmixed liquid from being discharged and administered.

  In addition, the capacity of the first space and the second space and the amount of liquid stored in the first space and the second space are appropriately adjusted. Furthermore, the shapes, dimensions, and seal strengths of the first and second fusion parts. By appropriately adjusting (peel strength), the opening method and the opening order can be easily set.

  In the present invention, since the first and second spaces can be communicated with each other by, for example, pressing the container body from the outside of the multi-chamber container, the liquid can be quickly prepared. In addition, since the liquid does not come into contact with the outside air during the preparation of such a liquid, there is no possibility of contamination with bacteria and foreign substances, and the chemical liquid can be prepared safely.

  From the above, the multi-chamber container of the present invention is used not only when used by doctors and nurses in medical institutions such as hospitals, but also when used by elderly people or patients with weak physical strength in home medical care. Is suitable.

It is a top view which shows embodiment of the multiple chamber container of this invention. It is the sectional view on the AA line in FIG. It is a top view which expands and shows the 2nd melt | fusion part vicinity of the multi-chamber container shown in FIG. It is a top view which expands and shows the 2nd melt | fusion part vicinity in other embodiment of the multiple chamber container of this invention. It is a top view which expands and shows the 2nd melt | fusion part vicinity in other embodiment of the multiple chamber container of this invention. It is a top view which expands and shows the 2nd melt | fusion part vicinity in other embodiment of the multiple chamber container of this invention. It is a top view which expands and shows the 2nd melt | fusion part vicinity in other embodiment of the multiple chamber container of this invention. It is a top view which expands and shows the 2nd melt | fusion part vicinity in other embodiment of the multiple chamber container of this invention.

Hereinafter, the multi-chamber container of the present invention will be described in detail based on a preferred embodiment shown in the accompanying drawings.
1 is a plan view showing an embodiment of a multi-chamber container of the present invention, FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, and FIG. 3 is a second fusion part of the multi-chamber container shown in FIG. It is an enlarged view of the vicinity. In the following description, the upper side in FIGS. 1 and 3 is referred to as a “base end”, and the lower side is referred to as a “tip”. In addition, in order to facilitate understanding, the first fusion part and the second fusion part in FIGS. 1 and 3 are indicated by hatching.

  As shown in FIG. 1, a multi-chamber container 1 of the present invention includes a bag (container body) 2 made of a soft material having a first space 3, a second space 4, and a third space 5 therein. The bag 2 has a mixed injection port 8 and a discharge port 9 provided at the end (edge) of the bag 2.

  The bag 2 is formed by forming a sheet material 21 made of a flexible soft material into a tube (tube shape) (for example, inflation molding), and fusing both ends (thermal fusion, high frequency fusion, ultrasonic fusion). Or the like, or sealed by bonding to form a bag. The proximal end side seal portion 22 and the distal end side seal portion 24 of the bag 2 are each cut into a desired shape.

  In addition, the bag 2 is formed by forming the sheet material into a tubular shape (tube shape), the entire circumference (four sides) of the outer periphery of the bag, or the entire circumference of the outer periphery of the bag in which two sheet materials are stacked, Further, the sheet may be folded in two, and any shape may be used, such as a bag shape formed by sealing (strong sealing) three sides other than the bent portion by fusion.

  A hole (hanging portion) 23 for suspending the multi-chamber container 1 on a hanger or the like is provided at a substantially central portion of the seal portion 22 on the proximal end side of the bag 2.

  In the middle of the bag 2 in the vertical direction in FIG. 1, the sheet material 21 facing the bag 2 is fused in a band shape so that the inner surfaces thereof are in close contact (thermal fusion, high frequency fusion, ultrasonic fusion, etc.) ), And the interior of the bag 2 is divided into the first space 3 and the second space 4 by the first fusion portion 6. It is partitioned. Both spaces 3 and 4 store liquids 30 and 40 having different compositions, respectively. In this case, the liquid 30 and the liquid 40 are in a state in which the respective components are mixed, that is, reactions between components that occur when manufactured and stored as a single-chamber container, a pH that is an unstable factor for a certain component, a certain component In order to prevent deterioration and deterioration of the liquid due to the action of other components on the liquid, etc., they are stored and stored in a non-contact manner. As such a combination of the liquid 30 and the liquid 40, for example, in the peritoneal dialysis solution, the pH on the side where glucose is added is stabilized by 3 to 5, and after mixing the other, the pH in a substantially neutral range at the time of administration The infusion solution can be prepared as a glucose infusion preparation and an amino acid infusion preparation, and coloring due to the Maillard reaction can be prevented.

  Until used, the liquid 30 and the liquid 40 are stored separately without being mixed, and in use, the first fused portion 6 is peeled (opened) to separate the first space 3 and the second space 4. The liquid 30 and the liquid 40 are mixed by communicating. Thereby, deterioration with time, deterioration, etc. of the liquids 30 and 40 can be prevented, and the intended medicinal effect can be obtained more reliably.

  In addition, by storing a liquid that requires pH adjustment, for example, a peritoneal dialysis solution and a pH adjusting agent that neutralizes the liquid separately, that is, in each of the first space 3 and the second space 4, Such liquid alteration, decomposition, deterioration, coloring, discoloration, generation of precipitates and the like can be prevented.

  In the present invention, the liquids 30 and 40 are not particularly limited. For example, physiological saline, electrolyte solution, Ringer's solution, high-calorie infusion solution, glucose solution, amino acid infusion solution, fat infusion solution, water for injection, peritoneal dialysis solution, oral / transdermal Any substance such as an enteric nutrient may be used.

  The first fusion part 6 is obtained by fusing the sheet material 21 of the bag 2 in a band shape. For example, the first fusion part 6 presses (compresses) a portion of the bag 2 on the second space 4 side by hand to increase the internal pressure of the second space 4 or hangs the multi-chamber container 1 on a hanger. In this state, the bag 2 is composed of a weak seal portion that is separated by manually squeezing the portion of the bag 2 on the first space 3 side and increasing the internal pressure of the first space 3. Thereby, the interruption | blocking by the 1st melt | fusion part 6 can be cancelled | released by simple operation | work, without using a special instrument etc., and the liquid in both the spaces 3 and 4 can be mixed.

  In addition, it is not restricted to the case where all the 1st melt | fusion parts 6 are comprised by the weak seal part, A part of 1st melt | fusion part 6 may be comprised by the weak seal part. Further, for example, by providing a difference in the peel strength by a method such as providing a difference in the band width or adhesive strength of the first fused portion 6, a portion that is easily peeled and a portion that is difficult to peel are provided continuously or stepwise. May be.

  Examples of the material (resin material) constituting the sheet material 21 of the bag 2 include polyolefins such as polyethylene (PE), polypropylene (PP), polybutadiene, ethylene-vinyl acetate copolymer (EVA), olefin elastomers, and styrene. Examples thereof include various thermoplastic elastomers such as elastomers, and combinations of these arbitrarily (blend resins, polymer alloys, laminates, etc.). These resin materials are preferable in that they are rich in flexibility and transparency, and have heat resistance and water resistance that can withstand high-pressure steam sterilization (autoclave sterilization).

  As a particularly preferable constituent material of the sheet material 21, polyethylene or polypropylene, styrene elastomer such as styrene-butadiene copolymer or styrene-ethylene-butylene-styrene block copolymer, ethylene-butene copolymer or ethylene are used. -A soft resin obtained by blending and softening an elastomer such as an olefin elastomer such as a propylene copolymer. This material is preferable in that it has high strength and flexibility, heat resistance (particularly heat resistance during sterilization) and water resistance, and is particularly excellent in workability and can reduce manufacturing costs. Furthermore, since two or more kinds of materials having different melting points (softening points) are used, the seal portions 22 and 24 by strong seals at both ends (or outer peripheral portions) of the bag 2 and the first fused portion by weak seals. It is possible to easily and satisfactorily set the seal conditions between the 6 and the second fusion part 7 and stabilize the seal strength of the weak seal part.

  Furthermore, in order to maintain the quality of the internal liquids 30 and 40, it is possible to further laminate a film such as an aluminum foil in order to provide the bag 2 with an oxygen barrier property and a light shielding property.

  In order to impart oxygen barrier properties, it is also possible to form a thin film such as a vapor deposition film made of an oxide such as titanium oxide, aluminum oxide, or silicon oxide as the outer surface or intermediate layer of the bag 2. Even in this case, the transparency of the bag 2 can be maintained, and internal visibility is ensured.

  The thickness of the sheet material 21 that constitutes the bag 2 is not particularly limited, and varies depending on other conditions such as the material of the sheet material 21, but is usually preferably about 0.18 to 0.55 mm. More preferably, it is about 22 to 0.36 mm.

  The front end of the bag 2 is provided with two ports that can communicate with the second space 4, that is, a mixed injection port 8 and a discharge port 9. The mixed injection port 8 and the discharge port 9 are fused so as to be sandwiched between the sheet materials 21 of the seal portion 24 and fixed to the bag 2 in a liquid-tight manner. The mixed injection port 8 and the discharge port 9 are respectively provided at positions shifted from the center of the bag 2 to the left side and the right side (see FIG. 1).

  The mixed injection port 8 includes a tube body 81 whose tip is expanded, an elastic plug 82 installed so as to seal the lumen of the tube body 81, and a cap 83 for fixing the elastic plug 82 to the tube body 81. It consists of and. Note that the tube 81 and the cap 83 can be integrally formed by performing two-color molding using the elastic plug 82 as a core.

  The elastic stopper 82 can pierce a needle tube (not shown) such as a bottle needle or a cannula needle. The needle tube is pierced when necessary, and a liquid such as a liquid medicine in the bag 2 is mixed with the liquid 30 and the liquid 40. Can be mixed (mixed). Further, the elastic plug 82 has a self-occlusion property, and after the needle tube is pulled out from the elastic plug 82, the puncture hole is instantaneously blocked to prevent leakage of the chemical solution.

  The discharge port 9 includes an elongated tube body 91, a cap 93 attached to the distal end portion of the tube body 91, and an opening mechanism that is installed in the lumen of the tube body 91 and can be broken and communicated. As an opening mechanism capable of breaking and communicating, for example, a click chip manufactured by Terumo Corporation (“click chip” is a registered trademark) can be used. The unsealing operation of this unsealing mechanism can be performed by pinching the tube body 91 with a finger from the sheet material of the bag 2 and bending it.

  In the illustrated embodiment, the tube body 91 of the discharge port 9 has a base end portion protruding into the bag 2 by a predetermined length (for example, about 20 to 30 mm) to form a protruding portion 92. The projecting portion 92 is formed of a member made of a hard material installed or fitted (connected) in the proximal end portion inner cavity of the tube body 91, and has an opening mechanism composed of a fragile portion 94 provided annularly on the entire outer periphery thereof. I have. The fragile portion 94 is configured by a thin portion (thin fragile portion) formed by forming an annular V-shaped groove, for example. And the opening operation similar to the above is performed and the weak part 94 is fractured | ruptured, the lumen | bore of the discharge port 9 and the inside of the bag 2 can be connected, and the liquid in the bag 2 can be discharged | emitted.

  By having such a projecting portion 92, when the multi-chamber container 1 is heat sterilized, blocking of the third space 5 can be prevented, and the peelability of the second fused portion 7 and the discharge of the discharged liquid can be prevented. There is an advantage that the property can be improved. In addition, even if the protrusion part 92 does not have a function as an opening mechanism, this advantage is exhibited, and in this case, the opening mechanism does not prevent the installation from being performed in another place.

  Further, a side hole (not shown) communicating with the inner cavity of the tube body 91 may be provided on the outer peripheral surface of the protruding portion 92. Thereby, when the liquid in the bag 2 is discharged through the discharge port 9, the amount of residual liquid can be reduced.

  In the present invention, the base end portion of the tube body 91 may not protrude into the bag 2 (the base end of the tube body 91 substantially coincides with the base end side edge portion of the seal portion 24). .

  The discharge port 9 is capable of discharging the mixed liquid of the liquid 30 and the liquid 40 in the bag 2 by breaking the opening mechanism that can be broken and communicating and removing the cap 93.

  The structure of attaching and detaching the cap 93 with respect to the distal end portion of the tube body 91 may be any structure such as fitting by frictional resistance, fitting by unevenness, and screwing.

  As a constituent material of the elastic plug 82, various thermoplastic elastomers such as styrene elastomers, olefin elastomers, polyamide elastomers, polyester elastomers, natural rubber, isoprene rubber, silicone rubber, butadiene rubber, styrene-butadiene rubber, and the like. Elastic materials such as various rubber materials, or combinations of any two or more of these (blends, laminates, etc.), polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, What blended polymer materials, such as polyolefin, polyester, polyvinyl chloride, polyurethane, polyamide, etc., such as a crosslinkable ethylene-vinyl acetate copolymer, is mentioned.

  As a constituent material of the pipe bodies 81 and 91, the projecting portion 92, and the caps 83 and 93, there are materials having conditions according to the use and function, for example, hardness, strength, toughness, chemical resistance, transparency, and other conditions. Used. The tubular body 81, the cap 83, and the protruding portion 92 having the fragile portion 94 are each preferably made of a relatively hard material, and the tubular body 91 is made of a relatively soft material. Preferably, the cap 93 may be a soft material or a hard material. Examples of these materials include polyolefins such as polyethylene and polypropylene (low density to high density), polyvinyl chloride (soft to hard), polycarbonate, polystyrene, polymethyl methacrylate, polyester (PET, PBT, etc.), polyamide, and ABS. Resins, AS resins, polyacetals, polyphenylene sulfides, fluorine-based resins and the like can be mentioned, and can be appropriately selected and used according to the conditions described above.

  Around the protruding portion 92 of the bag 2 (the end portion of the tube body 91), the opposing sheet material 21 is fused in a band shape so as to surround the protruding portion 92 (thermal fusion, high frequency fusion, ultrasonic fusion). Etc.), the second fusion part 7 obtained is obtained. The second fusion part 7 forms a third space 5 isolated from the second space.

  The second fusion part 7 is not connected to the first fusion part 6. Thereby, when the bag 2 is pressed and the 1st melt | fusion part 6 peels, from the joint (connection part) of the said 1st melt | fusion part 6 and the 2nd melt | fusion part 7, the 2nd melt | fusion part 7 Is prevented from being continuously peeled off, and the first fused portion 6 and the second fused portion 7 can be peeled independently.

  The third space 5 may be filled with a predetermined liquid or may be empty, but normally an empty state is preferable. The third space 5 may be in a dry state, but may contain some water vapor.

  It is preferable that the first fusion part 6 is configured to peel off prior to the second fusion part 7 when the portion of the second space 4 of the bag 2 is compressed. Thereby, it is prevented more reliably that only the liquid 40 is discharged | emitted from the discharge port 9, without mixing the liquid 30 and the liquid 40, and contributes to the improvement of safety | security.

  As described above, since the second fusion part 7 is not connected to the first fusion part 6, when the first fusion part 6 peels off, the second fusion part 7 peels in a chain manner. In addition, the respective peeling conditions (ease of peeling) of the first fusion part 6 and the second fusion part 7 can be individually set.

Hereinafter, the shape of the second fusion part 7 will be described.
The second fused portion 7 has at least one corner portion 71, and the angle θ outside the corner portion 71 is 70 to 150 °. In the illustrated embodiment, the second fusion part 7 has a shape in which the planar shape is a substantially U shape (a U shape opened to the front end side of the bag 2). In this case, the pair of side parts of the second fusion part 7 are formed substantially in parallel with each other, and the tip part of the second fusion part 7 has a linear shape substantially parallel to the seal part 24. Corners 71 are respectively provided at both ends of the front end portion of the wearing portion 7, and the outer angles θ of these two corners 71 are about 90 °, respectively (see FIG. 3). In the present invention, a preferable range of the angle θ is 75 to 130 °, a more preferable range is 80 to 120 °, and a further preferable range is 83 to 105 °.

  By having such a corner portion 71, when the second space 4 is compressed and the hydraulic pressure rises, the second fusion portion 7 is peeled off from the outside of the corner portion 71, and the second fusion portion 7 The part 7 can be easily and reliably peeled off. That is, the second fused portion 7 can be peeled and opened with a uniform fluid pressure and good reproducibility.

  Here, when the angle θ is too small, a force is easily applied to the corner portion 71 (stress is easily concentrated), and the corner portion 71 is easily peeled off. As a result, there is a risk that the multi-chamber container 1 may be accidentally (unintentionally) peeled off due to the force applied during storage or transportation. Further, even during use, the second fusion part 7 may be peeled off before the first fusion part 6.

  On the other hand, if the angle θ is too large, the stress concentration on the corner portion 71 is eased when the second fused portion 7 is peeled off due to an increase in the hydraulic pressure, and the corner portion 71 becomes difficult to be the starting point of peeling. The required force is not stable. That is, there is a case where the peeling of the corner portion 71 is not performed with uniform force and good reproducibility.

  The outer side of the corner portion 71 of the second fused portion 7 may have a sharp shape, but the corner portion 71 is chamfered or has a round shape (R) as shown in FIG. Is preferred. By providing such chamfering or rounding (R), it is possible to finely adjust the ease of occurrence of peeling of the corner portion 71 together with the angle θ described above. More specifically, when the chamfered portion or the rounded portion (R) is not formed at the corner portion 71 (in the case of a sharp shape) at the time of peeling of the second fused portion 7 due to an increase in hydraulic pressure, Stress concentration is likely to occur and peeling occurs relatively easily. On the other hand, when chamfering or rounding (R) is formed in the corner portion 71, such stress concentration is relieved, so the angle θ is relatively small. Even if it is a value, moderate peeling strength can be given and the reproducibility of peeling of the corner 71 is improved.

  When the roundness (R) is formed outside the corner 71, the radius of curvature is preferably R20 mm or less, and more preferably about R5 to R15 mm. When the radius of curvature of the roundness (R) is too large, the function as the corner portion 71, that is, the effect of causing peeling is reduced. However, when the condition of the radius of curvature is satisfied, the angle is within the range of the angle θ described above. The ease of occurrence of peeling of the portion 71 can be optimally adjusted, and the reproducibility of peeling is also improved.

  The angle and shape inside the corner portion 71 are not particularly limited, and in the embodiment of FIG. Of course, the portion may be chamfered or rounded (R).

  4 to 8 are respectively plan views showing enlarged examples of other shapes of the second fusion part 7. The configuration shown in these drawings will be described below, but the description of the same matters as those described in the embodiment shown in FIGS. 1 to 3 will be omitted.

  The second fused part 7 shown in FIG. 4 has a substantially U-shaped (or substantially U-shaped) planar shape, and the distal end portion of the second fused part 7 has an arc shape toward the distal end side. It has a protruding shape. Chamfering or rounding (R) with respect to the angle θ outside the corner portion 71 and the corner portion 71 is the same as described above.

  The second fused portion 7 shown in FIG. 5 has a substantially U-shaped planar shape, and the distal end portion of the second fused portion 7 projects in an arc shape toward the proximal end side. Yes. Chamfering or rounding (R) with respect to the angle θ outside the corner portion 71 and the corner portion 71 is the same as described above.

  The second fused part 7 shown in FIG. 6 has a substantially U-shaped planar shape (a trapezoid with the base end as the base), and the distance between the pair of side parts of the second fused part 7 is It is shaped to approach the proximal direction. Chamfering or rounding (R) with respect to the angle θ outside the corner portion 71 and the corner portion 71 is the same as described above.

  The second fusion part 7 shown in FIG. 7 has a substantially U-shaped planar shape (a trapezoid with the tip side as the base), and the distance between the pair of side parts of the second fusion part 7 is the tip. It is shaped to approach the direction. Chamfering or rounding (R) with respect to the angle θ outside the corner portion 71 and the corner portion 71 is the same as described above.

  In addition, although the 2nd melt | fusion part 7 shown in FIGS. 1-7 has comprised the shape left-right symmetrical in the figure, an asymmetrical shape may be sufficient.

  The second fusion part 7 shown in FIG. 8 has a substantially L-shaped planar shape, one end of the second fusion part 7 is connected to the seal part 24, and the other end is a side part of the bag 2. Connected to the edge. The second fusion part 7 has one bent corner part 71. Chamfering or rounding (R) with respect to the angle θ outside the corner portion 71 and the corner portion 71 is the same as described above.

  In the multi-chamber container 1 as described above, when the first fusion part 6 is peeled / opened as described above, a method for narrowing the first space 3 of the bag 2 in a state where the multi-chamber container 1 is suspended in advance, A method of pressing the portion of the first space 3 by pressing the portion of the first space 3 of the second chamber 3 or by rolling the portion of the first space 3 toward the tip of the multi-chamber container 1, Examples include a method of pressing and pressing a part, but various opening methods as described above are used in that the operability is excellent and the first fusion part 6 can be peeled and opened with higher reproducibility. Even if it is attempted, it is preferable to set so that peeling and unsealing occurs when a force is applied to one specific space.

  When the multi-chamber container 1 of the present invention is subjected to the various opening methods as described above, unless the portion of the second space 4 of the bag 2 is pressurized (compressed or the like), the portion of the first space 3 is usually Even if it pressurizes with the force of this, it is preferable to set it as the structure which the 1st melt | fusion part 6 does not peel and open.

  In other words, in the multi-chamber container 1, the minimum force F1 required to press the portion of the second space 4 of the bag 2 and peel off the first fusion part 6 is the first space 3 of the bag 2. This is preferably smaller than the minimum force F2 required to squeeze this portion and peel off the first fused portion 6. In particular, it is more preferable that F1 / F2 = about 1.5 to 3.0.

The liquid volume V _A of the second space 4 liquid 40 filled in (third space 5 a space Write adjacent) the amount of the liquid 30 filled in the first space 3 V _B or Is preferred. In particular, the liquid volume _{V A} is more preferably from 1.3 to 7.0 times the liquid volume _{V B,} and further preferably about 2.0 to 6.0 times. Thereby, the operation of pressing the portion of the second space 4 of the bag 2 to peel and open the first fused portion 6 can be performed more easily and reliably (with good reproducibility).

Here, the liquid amount V _A is not particularly limited, but is preferably about 300 to 3000 ml, and more preferably about 500 to 2500 ml.

In addition, the capacity (maximum capacity) of the second space 4 (the space adjacent to the third space 5) is C _A , and the amount of the liquid 40 filled in the second space 4 is V _A. When the capacity (maximum capacity) of the first space 3 is C _B , and the liquid amount of the liquid 30 filled in the first space 3 is V _B , the filling rate K _A = V _A / C _A The ratio K _B = V _B / C _B preferably satisfies the relationship K _A > K _B , and more preferably satisfies the relationship K _A / K _B = 1.1 to 1.8. Moreover, it is preferable that C _A > C _B , and C _A / C _B = 1.1 to 3.5 is more preferable.

  By setting it as such conditions, operation which presses the part of the 2nd space 4 of the bag 2, and peels and opens the 1st melt | fusion part 6 can be performed more easily and reliably (with high reproducibility). .

Here, the capacitance _{C A,} is not particularly limited, is preferably about 200～2000Ml, and more preferably about 400～1800Ml.

Further, the amount of liquid _VA is not particularly limited, but is preferably about 300 to 1900 ml, and more preferably about 500 to 1700 ml.

  The seal strength (initial peel strength) of the first fusion part 6 is not particularly limited, but it is usually preferably about 0.12 to 4.5 kgf / 20 mm width, and preferably 0.35 to 2.7 kgf / More preferably, the width is 20 mm. If the seal strength is less than this range, the first fused portion 6 is easily peeled off accidentally during transportation or storage. If the seal strength exceeds this range, the first fused portion 6 is peeled off (opened). ), The operability is reduced.

  Further, the seal strength (initial peel strength) of the second fused portion 7 is not particularly limited, but it is usually preferably about 0.5 to 6.0 kgf / 20 mm width, and preferably 1.0 to 5. More preferably, the width is 0 kgf / 20 mm. When the seal strength is less than this range, when the portion of the second space 4 of the bag 2 is pressed, the second fusion part 7 may be peeled off before the first fusion part 6, The first fused part 6 is easily peeled off accidentally during storage. On the other hand, when the seal strength exceeds this range, the operability when peeling (opening) the second fused portion 7 is lowered.

  In each of the above-described embodiments, the discharge port 9 and the second fusion part 7 are formed on the second space 4 side (the front end portion of the bag 2). The 2 fusion | fusion part 7 may be formed in the 1st space 3 side (base end part of the bag 2).

  Moreover, although each said embodiment is a suitable example for the bag containing a chemical | medical solution for peritoneal dialysis (peritoneal dialysis bag), in this invention, the number and formation position of the port formed in the bag 2 are not specifically limited, For example, The discharge port 9 and the mixed injection port 8 are integrated (common) so that they can be suitably used for a medical solution bag (infusion bag) for infusion. For example, if the shape is the same as the mixed injection port 8, the discharge is also mixed. Similarly, a needle tube (in particular, a bottle needle) may be used.

  As described above, the multi-chamber container of the present invention has been described based on the illustrated embodiments, but the present invention is not limited thereto, and the configuration of each part is replaced with an arbitrary configuration that can exhibit the same function. In addition, an arbitrary configuration may be added. In particular, it goes without saying that the shape of the second fusion part 7 is not limited to that shown in the drawings.

DESCRIPTION OF SYMBOLS 1 Multi-chamber container 2 Bag 21 Sheet material 22 Seal part 23 Hole 24 Seal part 3 1st space 4 2nd space 30, 40 Liquid 5 3rd space 6 1st melt | fusion part 7 2nd melt | fusion part 71 Corner Part 8 Mixed injection port 81 Tubing body 82 Elastic stopper 83 Cap 9 Discharge port 91 Tubing body 92 Projection part 93 Cap 94 Vulnerable part

Claims (7)

A container body composed of a sheet material having flexibility;
A first fusion part formed by fusing the sheet material in a strip shape and partitioning the interior of the container body into a first space and a second space;
A port provided at an end portion or an outer peripheral portion of the container body and capable of communicating with the inside of the container body;
A multi-chamber container formed by fusing the sheet material in a strip shape, and having a second fusion part that surrounds an end of the port inside the container body or near the end to form a third space; There,
The port includes a protrusion that protrudes into the third space and can be opened by breakage, and the second fusion part is formed so as to surround the protrusion,
The first fusion part and the second fusion part are not connected to each other and can be peeled independently.
The said 2nd melt | fusion part has at least 1 corner | angular part, and the angle outside the said corner | angular part is 70-150 degrees, The multi-chamber container characterized by the above-mentioned. The multi-chamber container according to claim 1, wherein the second fusion part has a substantially U-shaped planar shape. The multi-chamber container according to claim 1 or 2, wherein chamfering or rounding (R) is formed outside the corner portion. The multi-chamber container according to claim 1 or 2, wherein a roundness (R) having a radius of curvature of 20 mm or less is formed outside the corner portion. The multi-chamber container according to any one of claims 1 to 4, wherein the first space and the second space are filled with liquids having different compositions. The said 1st fusion | bonding part peels prior to a said 2nd fusion | melting part, when the space where the said 3rd space of the said 1st space and the said 2nd space adjoins is pressed. 5. The multi-chamber container according to 5. The capacity of a space in which the third space of the first space and the second space is adjacent is 200 to 2000 ml, and the capacity is larger than the capacity of the other space. A multi-chamber container according to any one of the above.

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