JP6718595B2 - Dialysis container - Google Patents

Description

The present invention relates to a dialysis container that is mounted on a dialysis machine and contains a dialysis agent for preparing a dialysate.

BACKGROUND ART Conventionally, a dialysis container has been used to house and provide a solid-state dialysis agent in artificial dialysis. As such a dialysis container, a hard resin container is used as described in Japanese Patent Application Laid-Open No. 2001-340447 (Patent Document 1), which is mounted on a dialysis machine at a dialysis site to store a solution for dissolution. The dialysis agent is dissolved in the solution by circulating it inside to prepare and supply the dialysate.

By the way, the conventional dialysis container made of a hard resin as described in Patent Document 1 is bulky in order to keep its original shape even after the dialysis agent is almost empty by dialysis and is discarded. There was a problem that it was difficult to dispose.

Therefore, in JP-A-2006-136615 (Patent Document 2), a dialysis container composed of a flexible sheet bag is proposed. The dialysis container disclosed in Patent Document 2 has two flexible sheets, one on the front and one on the back, superposed on the periphery of a hollow penetrating member so as to be welded to the periphery thereof, and is closely adhered to the outer periphery of both ends of the penetrating member to form an inlet port. The outflow port is formed. Since the bag itself made of a flexible sheet does not have substantial strength, the penetrating member is used to ensure stability when it is attached to the dialysis machine, and a penetrating member with a hollow tubular structure is used. By doing so, the inflow and outflow of the solution is permitted, and the dialysis agent in the bag is dissolved by providing the communication hole in the peripheral wall of the penetrating member.

However, in the bag body described in Patent Document 2, the bag body itself cannot maintain a constant shape because it is made of a flexible sheet. Therefore, the work of injecting and filling the dialysis agent is difficult, and particularly in the bag structure in which two flexible sheets are superposed in a close contact state as described in the embodiment of Patent Document 2, Due to the existence, it is difficult to inflate the flexible bag to secure the volume. In addition, since the bag is not formed into a constant shape even when the dialysis agent is contained, it is difficult to accurately check (check) the filling amount (internal volume) in the bag. In addition, it may be deformed unexpectedly during use while being attached to the dialysis machine.For this reason, for example, in a dialysis machine that measures and manages the pressure in the container and controls and controls it, There was also a problem that the measurement itself was difficult. Furthermore, since the dialysis container is required to have a predetermined pressure resistance when the solution is circulated or discharged, in a thin flexible sheet, they are fixed to each other or hard at the inlet and outlet ports. It was also difficult to secure the fluid tightness and the pressure resistance with sufficient reliability for fixing to the periphery of the penetrating member. In fact, it is difficult to put it into practical use because of the many problems inherent therein, and the bag-shaped container described in Patent Document 2 is not currently provided on the market.

JP, 2001-340447, A JP, 2006-136615, A

Here, the present invention has been made in view of the circumstances as described above, and the problem to be solved is a dialysis container that accommodates a dialysis agent and is provided to a dialysis site. It can be installed stably, can be reduced in volume after use and can be efficiently disposed of, and the dialysis agent can be easily filled. It is an object of the present invention to provide a dialysis container having a novel structure that can be easily confirmed.

Hereinafter, embodiments of the present invention made to solve such problems will be described. The constituent elements used in each of the following aspects can be used in any combination as much as possible. The aspects and technical features of the present invention are not limited to those described below, but are described in the entire specification and the drawings, or the invention idea that can be understood by those skilled in the art from those descriptions. It should be understood that it is recognized based on.

A first aspect of the present invention is a dialysis container that is provided on opposite sides of an inlet and an outlet to accommodate a dialysis agent, and has a hollow structure including a peripheral wall portion that is integrally formed. A bottle-shaped container having a deformable rigidity that is held in a substantially constant shape before and after containing the dialysis agent and that is crushed by the atmospheric pressure exerted on the outer peripheral surface of the peripheral wall portion by internal decompression is adopted, and the inlet and the flow In the bottle-shaped container, a core member is provided inside the bottle-shaped container, the core member being provided between the opposed two sides provided with an outlet.

According to the dialysis container having the structure according to this aspect, since the inside core is provided with the inflow/outflow port and the core member is provided between the opposing sides, the inflow/outflow port of the dialysis container is attached to the dialysis machine. Even if an external force such as compression is applied in the direction, the risk that the dialysis container is crushed in the direction is reduced, and the state of attachment to the dialysis device can be stably maintained.

Further, generally, in a dialysis container, deionized water is added from the inflow port to dissolve the dialysis agent and the dissolved solution is discharged from the outflow port. The inside of the dialysis container is depressurized. Here, in the dialysis container of the present aspect, since it is designed to be crushed by the atmospheric pressure exerted on the outer peripheral surface due to internal decompression, the dialysis container is automatically crushed as the solution is discharged, and the dialysis container after use is crushed. It can be made bulky when it is discarded, and work such as crushing the dialysis container can be omitted.

Further, since the shape of the dialysis container of the present aspect does not significantly change before and after containing the dialysis agent, for example, as compared with the bag-structured dialysis container described in Patent Document 2, for example, the dialysis container. It is not necessary to open the dialysis agent, a sufficient storage volume is ensured even before the dialysis agent is stored, and the dialysis agent can be easily filled. Further, since the shape of the dialysis container is substantially constant even after the dialysis agent is stored, it is easy to confirm the filling amount of the dialysis agent.

A second aspect of the present invention is the dialysis container according to the first aspect, wherein the bottle-shaped container is integrally formed with an inclined peripheral wall portion narrowed at both side opening portions of the cylindrical peripheral wall portion. And the inflow port and the outflow port are provided at the tip of each of the inclined peripheral wall portions.

According to the dialysis container having the structure according to this aspect, since the inclined peripheral wall portions are provided at both ends of the cylindrical peripheral wall portion, for example, both end surfaces of the cylindrical peripheral wall portion are flat surfaces extending in the direction perpendicular to the axis. As compared with the case where the inside of the container is sufficiently secured, when the inside of the container is decompressed and deforms by being crushed and deformed, the inclination angle of the inclined peripheral wall portion changes, thereby The crushing deformation of the portion provided with the peripheral wall portion can be easily realized. Thereby, the volume reduction effect of the dialysis container can be improved.

Further, since the peripheral portion of the outflow port is formed as the inclined peripheral wall portion, it is possible to reduce the possibility that the dissolved solution of the dialysis agent remains in the dialysis container. Incidentally, such an effect is exhibited by providing the inclined peripheral wall portion on the outlet side, but for example, by providing the inclined peripheral wall portion of the same shape on both the inlet side and the outlet side, a dialysis container can be provided. When mounting on the dialysis machine, it is not necessary to determine the direction of the inflow port and the direction of the outflow port, and thus mounting can be made easier.

In a third aspect of the present invention, in the dialysis container according to the second aspect, the wall thickness of the inclined peripheral wall portion provided with the inlet and the outlet is larger than that of the cylindrical peripheral wall portion. It has been enlarged.

According to the dialysis container having the structure according to the present aspect, the volumetric deformation of the tubular peripheral wall portion at the time of depressurization is relatively easily allowed, and excessive deformation near the inflow port and the outflow port is suppressed to reduce the flow rate. The connection state of the inlet and the outlet to the dialyzer can be more stably ensured. The dialysis container of this aspect can be suitably formed by, for example, blow molding.

A fourth aspect of the present invention is the dialysis container according to any one of the first to third aspects, wherein the cylindrical peripheral wall portion has a non-cylindrical cross-sectional shape having at least a flat plate portion. Is what

According to the dialysis container having the structure according to this aspect, the cylindrical peripheral wall portion is more likely to be deformed by volume reduction during decompression, as compared with the case where the cylindrical peripheral wall portion has a cylindrical shape. In particular, compared to a cylindrical shape in which the stress generated during the action of the pressure difference between the inside and outside of the cylindrical peripheral wall is mainly the stress in the compression direction, when the cylindrical peripheral wall has a flat shape, Since the stress is positively generated, it is possible to easily secure the thickness of the cylindrical peripheral wall portion and the like in accordance with various conditions such as molding and strength, and to easily collapse due to the pressure difference between the inside and the outside.

A fifth aspect of the present invention is the dialysis container according to any one of the first to fourth aspects, wherein the bottle-shaped container is provided with a groove-shaped deformation control unit.

According to the dialysis container having the structure according to the present aspect, since the bottle-shaped container is provided with the groove-shaped deformation control unit, volume reduction deformation is likely to occur along the deformation control unit during depressurization. .. Thereby, the shape after the volume reduction deformation can be controlled, and the volume reduction efficiency can be improved. The deformation control unit may be formed, for example, by providing the concave groove on the outer peripheral surface or the inner peripheral surface of the cylindrical peripheral wall portion, or by forming the convex portion on the outer peripheral surface or the inner peripheral surface. A relatively concave portion may be formed.

A sixth aspect of the present invention is the dialysis container according to any one of the first to fifth aspects, wherein the core member is attached to both the inlet and the outlet of the bottle-shaped container. In at least one of the above, the structure does not have an annular peripheral wall that is continuous in the circumferential direction, but has a structure that is opened to the outer periphery.

According to the dialysis container having the structure according to the present aspect, since the core member is attached to the inflow port and the outflow port of the bottle-shaped container, at least a part of the core member has a structure opened to the outer periphery. As a result, the dialysis agent and deionized water can be easily filled in the bottle-shaped container through the opening. In addition, since at least one end of the core member has a structure in which it is opened to the outer periphery, when inserting a nozzle for injecting a dialysis agent or deionized water into the end of the core member. With, the end of the core member is easily bent and deformed, and the insertion resistance of the injection nozzle can be reduced.

In addition, in this aspect, it is preferable to employ the core member described in the following aspects.

A seventh aspect of the present invention is the dialysis container according to the sixth aspect, wherein the central core member is an arc in which at least a part in a lengthwise direction, a part on a circumference is opened to an outer circumference. The cross section extends in the longitudinal direction.

An eighth aspect of the present invention is the dialysis container according to the sixth or seventh aspect, wherein the core member is opened to the outer periphery at a plurality of locations on the periphery in at least a part of the length direction. With a plurality of circumferential upper portions divided in the circumferential direction, and a radial reinforcing portion extending in the length direction in a radial cross section consisting of a connecting portion extending in the radial direction from the central portion and connecting the respective circumferential upper portions to each other. There is something.

A ninth aspect of the present invention is the dialysis container according to any one of the sixth to eighth aspects, wherein both end portions in the length direction of the core member are opened to the outer periphery in a part on the periphery. While extending in the lengthwise direction in a circular arc cross section, the middle portion in the lengthwise direction of the core member extends in the lengthwise direction with a radial cross section protruding from the central portion toward the outer peripheral side.

According to the dialysis container having the structure according to these aspects, since the core member extends in the length direction with a predetermined cross-sectional shape, the structure of the core member can be simplified. Particularly, in the seventh aspect, a C-shaped cross section extending over a half circumference or more is preferable, and when such a C-shaped cross section or the radial cross section of the eighth or ninth aspect is adopted, the core member The second moment of area can be set large while suppressing the cross-sectional area of the core to be small, and the bending rigidity of the core member can be more efficiently ensured.

A tenth aspect of the present invention is the dialysis container according to any one of the first to ninth aspects, wherein the maximum width dimension in the lengthwise intermediate portion of the core member is the length of the core member. It is made smaller than the maximum width dimension at both ends in the direction.

According to the dialysis container having the structure according to the present aspect, the maximum width dimension of both lengthwise end portions of the core member is ensured to be large to some extent, so that both end portions on the inlet side and the outlet side of the dialysis container are secured. It is also possible to secure sufficient rigidity. Therefore, the dialysis container can be more stably attached to the dialysis machine. Further, since the maximum width dimension of the middle portion in the length direction of the core member is reduced, it is possible to reduce the possibility that the core member impedes volume reduction deformation of the dialysis container. Therefore, the volume of the dialysis container can be deformed more stably.

An eleventh aspect of the present invention is the dialysis container according to any one of the first to tenth aspects, wherein the core member is provided with a reinforcing rib.

According to the dialysis container having the structure according to the present aspect, the bending rigidity of the core member can be stably ensured. The shape of the reinforcing ribs can be designed and changed according to the shape of the core member, and the flexibility of setting the bending rigidity of the core member can be improved.

A twelfth aspect of the present invention is the dialysis container according to any one of the first to eleventh aspects, wherein the middle portion in the longitudinal direction of the core member has a smaller bending strength than other portions. Parts are provided.

According to the dialysis container having the structure according to the present aspect, since the hinge portion whose bending strength is smaller than that of the other portion is provided in the lengthwise intermediate portion of the core member, the dialysis container can be used for dialysis. After the solution of the agent flows out and the dialysis container is reduced in volume and deformed, the dialysis container can be easily detached and bent. This allows the dialysis container to be crushed into smaller pieces and discarded.

A thirteenth aspect of the present invention is the dialysis container according to any one of the first to twelfth aspects, wherein the bottle-shaped container is a separate body in at least one of the inlet and the outlet of a blow-molded article. The formed mouth member is fixed.

According to the dialysis container having the structure according to the present aspect, since the cylindrical peripheral wall portion is formed by blow molding, the wall thickness dimension of the cylindrical peripheral wall portion can be made substantially constant over substantially the entire area. The volume reduction deformation at the time of decompression can be stably realized without accompanying local deformation at an unexpected location.

In the dialysis container having the structure according to the present invention, since the core member is provided inside the bottle-shaped container, the dialysis container can be stably attached to the dialysis device due to the reinforcing effect of the core member. In addition, since the inside is crushed by being depressurized, it is possible to automatically reduce the volume after discharging the solution of the dialysis agent and discard it without making it bulky. Further, unlike the bag-shaped dialysis container having the conventional structure, the dialysis agent is bottle-shaped, so that it is possible to easily fill the dialysis agent and confirm the filling amount.

The front view of the dialysis container as a 1st Embodiment of this invention. The side view of the dialysis container shown by FIG. The top view of the dialysis container shown by FIG. IV-IV sectional drawing in FIG. VV sectional drawing in FIG. VI-VI sectional drawing in FIG. The front view of the dialysis container as a 2nd Embodiment of this invention. The side view of the container for dialysis shown by FIG. It is a longitudinal cross-sectional view of the dialysis container as a 3rd Embodiment of this invention, Comprising: It is a figure corresponding to FIG. FIG. 10 is another vertical cross-sectional view of the dialysis container shown in FIG. 9 and corresponds to FIG. 5. FIG. 10 is a cross-sectional view of the dialysis container shown in FIG. 9, corresponding to FIG. 6. It is a longitudinal cross-sectional view of the dialysis container as a 4th Embodiment of this invention, Comprising: It is a figure corresponding to FIG. FIG. 13 is another vertical cross-sectional view of the dialysis container shown in FIG. 12, corresponding to FIG. 5. FIG. 13 is a cross-sectional view of the dialysis container shown in FIG. 12, corresponding to FIG. 6. It is a figure which shows another aspect of the core member which comprises the dialysis container of this invention, (a) is a top view, (b) is a longitudinal cross-sectional view. It is a figure which shows another aspect of the core member which comprises the dialysis container of this invention, (a) is a top view, (b) is a longitudinal cross-sectional view. It is a figure which shows another aspect of the core member which comprises the dialysis container of this invention, (a) is a top view, (b) is a longitudinal cross-sectional view. It is a front view of the dialysis container as a 5th Embodiment of this invention, Comprising: It is a figure corresponding to FIG. FIG. 19 is a left side view of the dialysis container shown in FIG. 18, corresponding to FIG. 2. FIG. 20 is a sectional view taken along line XX-XX in FIG. 19. XXI-XXI sectional drawing in FIG. FIG. 19 is a lateral cross-sectional view showing an enlarged XXII-XXII cross section in FIG. 18. FIG. 19 is a lateral cross-sectional view showing an enlarged XXIII-XIII cross section in FIG. 18. It is a longitudinal cross-sectional view of the dialysis container as a 6th Embodiment of this invention, Comprising: It is a figure corresponding to FIG.

Embodiments of the present invention will be described below with reference to the drawings.

First, FIGS. 1 to 6 show a dialysis container 10 as a first embodiment of the present invention. The dialysis container 10 includes a bottle-shaped container 11 that extends in a substantially straight line, and a dialysis agent 12 is stored in the inside thereof. Both ends of the dialysis container 10 in the length direction (vertical direction in FIG. 1) are attached to a dialysis device (not shown). Deionized water, for example, is supplied from the dialysis device to the inside of the dialysis container 10 through the inflow port 14 of the dialysis container 10 to dissolve the dialysis agent 12 while the dissolution liquid flows into the dialysis container 10. It is adapted to be discharged to the dialysis machine through the outlet 16. Further, this solution is mixed with another solution prepared separately in a dialysis device to prepare a dialysis solution for use in artificial dialysis. In the following description, the up-down direction refers to the up-down direction in FIG.

More specifically, the bottle-shaped container 11 has a hollow thin-walled tubular shape extending in the vertical direction as a whole, and an intermediate portion in the length direction is a tubular peripheral wall portion 18 extending straight in the vertical direction. The tubular peripheral wall portion 18 has a non-cylindrical cross section, and in the present embodiment, it has a rounded rectangular shape as shown in FIG. 6 and the like. That is, the tubular peripheral wall portion 18 is composed of flat plate-shaped portions 20, 20, 20, 20 that spread in parallel with the length direction in four directions (vertical and horizontal directions in FIG. 6 ), and each flat plate-shaped portion 20. , 20 are smoothly connected by the curved portions 22, 22, 22, 22.

In addition, upper and lower inclined peripheral wall portions 24 and 26 projecting in the vertical direction are integrally formed in the upper and lower openings of the cylindrical peripheral wall portion 18. In the present embodiment, the tubular peripheral wall portion 18 and the upper and lower inclined peripheral wall portions 24 and 26 form the peripheral wall portion 25 of the bottle-shaped container 11. The upper and lower inclined peripheral wall portions 24 and 26 are formed in substantially the same tapered cylindrical shape, and the large-diameter side opening portions thereof are smoothly connected to the upper and lower opening portions of the cylindrical peripheral wall portion 18, respectively. The upper and lower inclined peripheral wall portions 24, 26 project in a funnel-like shape narrowing toward the inner peripheral side toward the outer side in the longitudinal direction, and the circular inlets are respectively provided at the projecting tips on the small diameter side. 14 and the outlet 16 are open. The inflow port 14 and the outflow port 16 are provided on both sides of the bottle-shaped container 11 facing each other on the central axis and extend on the central axis. The inflow port 14 and the outflow port 16 allow the internal space surrounded by the peripheral wall portion 25 of the bottle-shaped container 11 to communicate with the outside.

It should be noted that small-diameter cylindrical portions 27, 27 are straightly projected outward in the longitudinal direction with a predetermined length dimension from the protruding tips of the upper and lower inclined peripheral wall portions 24, 26, and the openings of the small-diameter cylindrical portions 27, 27 are formed. Are the inflow port 14 and the outflow port 16, respectively, and the opening edge portions of the small-diameter cylindrical portions 27, 27 (inflow port 14 and the outflow port 16) have a large outer diameter size, and are circular in shape extending in the direction perpendicular to the axis. Flange portions 28, 28 are provided.

The bottle-shaped container 11 is integrally formed by blow molding with a soft synthetic resin, for example. Examples of such soft synthetic resin include, for example, polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate (PET), and the like. In this embodiment, polypropylene is used. Since these are integrally formed by blow molding, the wall thickness of the upper and lower inclined peripheral wall portions 24, 26 is made larger than the wall thickness of the tubular peripheral wall portion 18.

Caps 30 and 30 as mouth members are attached to the flange-shaped portions 28 and 28 of the upper and lower inclined peripheral wall portions 24 and 26, respectively. Each of these caps 30, 30 has a substantially stepped cylindrical shape, and the inner holes of the caps 30, 30 are aligned with the inflow port 14 and the outflow port 16. Then, the large-diameter side tubular portions of the caps 30, 30 are superposed on the flange-shaped portions 28, 28 of the upper and lower inclined peripheral wall portions 24, 26, and fixed by adhesion or welding. Further, the small-diameter side tubular portions of both the caps 30 and 30 project outward in the length direction, and the cap 30 end portion projecting upward is used as the inflow side port 32, while the cap 30 end portion projecting downward. Is the outflow side port 34.

Further, filters 36, 36 are fixed inside the both caps 30, 30. The filters 36, 36 are incapable of passing the dialysis agent 12 before dissolution, while being capable of passing deionized water or a solution in which the dialysis agent 12 is dissolved.

The caps 30 and 30 are formed, for example, by injection molding using a hard synthetic resin, and are formed separately from the bottle-shaped container 11. The deformation rigidity of these caps 30, 30 is not particularly limited, but the dialysis container 10 can be stably attached to the dialysis device by making it larger than the deformation rigidity of the bottle-shaped container 11 described later.

Further, inside the bottle-shaped container 11 having such a shape, a core member 38 is stretched between the upper and lower inclined peripheral wall portions 24 and 26. The center core member 38 extends in a straight line in the vertical direction from the inlet 14 which is the upper end of the upper inclined peripheral wall portion 24 to the outlet 16 which is the lower end of the lower inclined peripheral wall portion 26, and is attached. Has been.

As shown in FIG. 6 and the like, the middle core member 38 has a substantially C-shaped cross section, and has a circular arc cross section in which a part of the circumference is opened to the outer circumference. Over at least a part in the length direction, in the present embodiment, the entire length in the length direction. In short, in the present embodiment, the core member 38 does not have an annular peripheral wall or a solid portion that is continuous in the circumferential direction in any portion in the length direction, and a part of the circumference is the outer periphery. Is open to. The circumferential dimension of the core member 38 is not particularly limited, but it is preferable to have a circumferential dimension of at least half the circumference. As a result, the second moment of area can be set large while suppressing the cross-sectional area of the core member 38, and the bending rigidity of the core member 38 can be efficiently secured. Further, the maximum width dimension of the core member 38 (dimension in the left-right direction in FIG. 6, approximately twice the radius of curvature of the core member 38) is the small-diameter tubular portion 27 provided on the upper and lower inclined peripheral wall portions 24, 26. , 27, and the inner peripheral surfaces of the small-diameter tubular portions 27, 27 and the outer peripheral surface of the center core member 38 are fixed to each other, so that the center core member 38 is connected to the inlet port 14 and the inlet port. It is attached to the outlet 16.

The material of the core member 38 is not limited in any way, but can be suitably formed by injection molding of a hard synthetic resin, for example. Examples of such a hard synthetic resin include polyethylene, polypropylene, polycarbonate, acrylonitrile-butadiene-styrene copolymer synthetic resin (ABS resin), etc. In this embodiment, high density polyethylene is adopted. Further, the rigidity of the core member 38 is not limited in any way, but it is preferable that the rigidity is made higher than the deformation rigidity of the bottle-shaped container 11 described later.

The dialysis agent 12 is contained in the dialysis container 10 having the above-described shape. The dialysis agent 12 is used, for example, for injecting the dialysis agent 12 into the inflow port 14 (center member 38) which is the upper opening of the bottle-shaped container 11 while the lower opening of the bottle-shaped container 11 is closed. It is injected by inserting a nozzle or the like. Since the core member 38 of the present embodiment has a structure in which a part of the circumference is opened to the outer circumference, the dialysis agent 12 enters the bottle-shaped container 11 through the opening on the circumference. Easily injected. Then, after the injection of the dialysis agent 12, the upper opening of the bottle-shaped container 11 is closed by the cap 30, so that the dialysis agent 12 is stored inside the dialysis container 10.

The dialysis agent 12 contained in the dialysis container 10 is not particularly limited, but sodium hydrogencarbonate is adopted in the present embodiment.

The dialysis container 10 having such a structure is attached to the dialysis device so as to be sandwiched from above and below and compressed. As a result, the deionized water supply unit provided in the dialysis device is connected to the inflow port 32 of the dialysis container 10, and the solution discharge unit provided in the dialysis device is connected to the outflow port 34 of the dialysis device 10. It is designed to be connected to. As a result, the deionized water supplied from the dialysis device is introduced into the dialysis container 10 through the inflow port 32 and the inflow port 14 to dissolve the dialysis agent 12 contained in the dialysis container 10. Meanwhile, the solution of the dialysis agent 12 is fed to the dialyzer through the outlet 16 and the outlet port 34.

Here, the deformation rigidity of the bottle-shaped container 11 does not substantially change its shape before and after containing the dialysis agent 12, and the dialysis agent 12 in the dialysis container 10 is dissolved in deionized water. When the pressure inside the bottle-shaped container 11 is reduced, the difference between the pressure inside the bottle-shaped container 11 and the atmospheric pressure exerted on the outer peripheral surface 39 of the bottle-shaped container 11 causes the bottle-shaped container 11 to collapse. It is set.

In the bottle-shaped container 11 applied to the present invention, in consideration of a general dialysis device, a negative pressure of 10 mmHg is applied so that the bottle-shaped container 11 can be efficiently crushed and reduced in volume by the reduced pressure applied to the inside of the bottle-shaped container 11. Those having a volume reduction rate of 5% or more are preferable, and those having a volume reduction rate of 10% or more at a negative pressure of 10 mmHg are more preferable.

Further, the bottle-shaped container 11 is crushed by an external force during transportation or mounting on the dialysis device, or when the dialysis container 10 is removed from the dialysis device and released to the atmosphere after discharging the solution of the dialysis agent 12. Although the shape may be restored to some extent by the elastic restoring action, it is preferable that the bottle-shaped container 11 of the present invention maintains the volume-reduced state even when it is opened to the atmosphere. For example, when the internal volume of the bottle-shaped container 11 is reduced to 50% or less by the internal pressure reduction, the volume-reduced state is maintained to such an extent that the volume does not recover to 80% even if the interior is opened to the atmosphere thereafter. Those are preferable.

The dialysis container 10 having the above-described structure is attached to the dialysis device so as to be vertically sandwiched and compressed. Here, since the dialysis container 10 is provided with the core member 38 extending in the vertical direction, when the dialysis container 10 is attached to the dialysis device due to the reinforcing effect of the core member 38, The risk that the dialysis container 10 is compressed and deformed in the vertical direction can be effectively reduced. As a result, the caps 30, 30 at the upper and lower ends and the dialysis machine can be stably connected, and the mounted state can be stably maintained.

Further, since the bottle-shaped container 11 has a deformation rigidity such that the shape thereof is maintained substantially constant before and after containing the dialysis agent 12, for example, the bag-shaped dialysis described in Patent Document 2 described above. It is not necessary to hold the opening in an open state and to secure the accommodation area as compared with the container for use, and the dialysis agent 12 can be easily filled. Further, as compared with the bag-shaped dialysis container, the shape thereof does not change even when the dialysis agent 12 is filled, so that the filling amount of the dialysis agent 12 can be easily confirmed. Further, since the dialysis container of Patent Document 2 has a bag structure in which two flexible sheets are welded to each other, when a large positive pressure is exerted in the container by adding deionized water. Although there is a possibility that the contents may leak out from the welded portion, in the dialysis container 10 of the present embodiment, since the tubular peripheral wall portion 18 is integrally formed, such a possibility can be avoided.

Furthermore, the bottle-shaped container 11 has a deformation rigidity such that when the dialysis agent 12 inside is dissolved in deionized water and discharged, the inside is depressurized and crushed due to the difference from the outside atmospheric pressure. There is. As a result, after the dissolution liquid of the dialysis agent 12 is discharged, the dialysis container 10 is automatically crushed and the volume is reduced, so that the dialysis container 10 can be efficiently discarded without being bulky.

In particular, since the peripheral wall portion 25 of the bottle-shaped container 11 is configured to include the upper and lower inclined peripheral wall portions 24 and 26, the bottle-shaped container 11 can have a sufficient volume and the bottle-shaped container 11 can be secured. Even when a reduced pressure is applied to the bottle-shaped container 11, the volume of the bottle-shaped container 11 can be easily reduced by changing the inclination angles of the upper and lower inclined peripheral wall portions 24 and 26. Further, since the lower side of the peripheral wall portion 25 is the inclined peripheral wall portion 26 and the outflow port 16 is provided at the projecting tip portion of the inclined peripheral wall portion 26, the dissolution liquid remains inside the bottle-shaped container 11. Can be efficiently discharged without. Further, since the upper and lower inclined peripheral wall portions 24, 26 have substantially the same shape and the dialysis container 10 has a vertically symmetrical shape, the dialysis machine can be mounted on the dialysis machine without distinction between upper and lower parts, and work efficiency can be improved. Can be achieved.

Further, in the present embodiment, the cylindrical peripheral wall portion 18 has a rounded rectangular cross section and has the flat plate-shaped portions 20, 20, 20, 20. In comparison, shearing and bending direction stress are more likely to occur, and a more efficient volume reduction effect can be achieved.

Furthermore, since the bottle-shaped container 11 of the present embodiment is integrally formed by blow molding, the plate thickness dimension can be made substantially constant, and the bottle-shaped container 11 can be locally localized at an unexpected location during depressurization. Deformation can be effectively prevented. Further, when the bottle-shaped container 11 is formed by blow molding, generally, the inclined peripheral wall portions 24, 26 on the upper side or the lower side, for example, on the outlet side of the cylindrical peripheral wall portion 18 which is the intermediate portion, are formed. One is considered thicker. As described above, the tubular peripheral wall portion 18 is thinner than the upper and lower inclined peripheral wall portions 24, 26, so that the volumetric deformation of the tubular peripheral wall portion 18 is relatively likely to occur at the time of decompression. The volume reduction efficiency can be improved.

Furthermore, the core member 38 of the present embodiment has a circular arc cross section in which a part of the circumference is opened to the outer circumference, and extends along the entire length in the length direction with the circular arc cross section. Therefore, for example, when the dialysis agent 12 is filled, when the injection nozzle is inserted into the end of the core member 38, the core member 38 is easily bent and deformed, and the injection nozzle can be easily inserted. To be done.

Next, FIGS. 7 and 8 show a dialysis container 40 as a second embodiment of the present invention. In the dialysis container 40 of the present embodiment, a groove-shaped deformation control unit 42 is provided on the outer peripheral surface 39 of the bottle-shaped container 11. In the following description, the members and parts substantially the same as those in the first embodiment will be denoted by the same reference numerals as those in the first embodiment in the drawings, and detailed description thereof will be omitted. ..

A plurality of deformation control units 42 of the present embodiment are provided on the outer peripheral surface 39 of the bottle-shaped container 11, and as shown in FIGS. 7 and 8, a groove extending in the circumferential direction of the bottle-shaped container 11 and a vertical extension. Grooves, grooves extending along the curved portions of the upper and lower inclined peripheral wall portions 24, 26, etc. are provided at predetermined positions. Further, the deformation control unit 42 of the present embodiment is formed by providing the outer peripheral surface 39 of the bottle-shaped container 11 with a groove having a substantially semicircular cross section and providing the inner peripheral surface with a ridge having a substantially semicircular cross section. Thus, the thickness dimension of the deformation control portion 42 formed in the bottle-shaped container 11 is substantially equal to the thickness dimension of the portion where the deformation control portion 42 is not formed.

By providing such a deformation control unit 42 in the bottle-shaped container 11, when the inside of the bottle-shaped container 11 is decompressed and the bottle-shaped container 11 is crushed, the formation location of the deformation control unit 42 is preferentially crushed. It has become. As a result, the shape of the dialysis container 40 after volume reduction is controlled, and for example, by setting the shape, size, and number of the deformation control unit 42 so that the volume after volume reduction becomes smaller, The container 40 is not bulky and can be disposed of more efficiently.

The deformation control unit may be any one that controls the shape of the bottle-shaped container 11 after being deformed due to the depressurizing action. In addition to providing a concave groove on the outer peripheral surface 39 or the inner peripheral surface of the bottle-shaped container 11, As in the embodiment, a groove may be provided on the outer peripheral surface 39 and a convex strip may be provided on the inner peripheral surface, or a convex portion may be provided on the outer peripheral surface 39 or the inner peripheral surface to form a relatively concave portion. It may be formed. Further, as the shape of the deformation control portion, a spiral groove or the like may be adopted in addition to the linearly or annularly extending groove. Furthermore, the groove cross section does not have to be semicircular, and various shapes such as a polygonal shape such as a triangle can be adopted.

Next, FIGS. 9 to 11 show a dialysis container 44 as a third embodiment of the present invention. The core member 46 of this embodiment is different from the core member 38 of the first embodiment in shape.

That is, the center core member 46 has at least a part in the longitudinal direction with a radial cross section composed of the pair of peripheral upper portions 48, 48 and the pair of connecting portions 50, 50, and in the present embodiment, extends over the entire length in the longitudinal direction. Is formed to extend. The upper peripheral portions 48, 48 are opposed to each other in the radial direction (left-right direction in FIG. 11) with a predetermined circumferential dimension. In other words, with respect to the tubular member, the tubular member is provided in the circumferential direction on both sides in the vertical direction of FIG. 11 with a predetermined circumferential dimension and extending over the entire length in the axial direction. It is divided to form a pair of peripheral upper portions 48, 48.

On the other hand, the connecting portions 50, 50 extend toward the center from the circumferential central portions of the upper peripheral portions 48, 48, and are connected to each other at the central portions. In other words, the connecting portions 50, 50 extend in the radial direction from the central portion and are connected to the upper peripheral portions 48, 48, and the pair of upper peripheral portions 48, 48 are connected to each other by the connecting portions 50, 50.

The peripheral upper portions 48, 48 and the connecting portions 50, 50 form a radial cross section shown in FIG. 11 and the like, and the radial reinforcing section is formed by extending the radial cross section in the longitudinal direction. That is, in the present embodiment, the core member 46 is a radial reinforcing portion over the entire length.

By adopting the core member 46 as in this embodiment, excellent bending rigidity can be secured while suppressing the cross-sectional area of the core member 46 to be small. Therefore, the storage area for the dialysis agent 12 in the bottle-shaped container 11 can be secured more stably.

Next, FIGS. 12 to 14 show a dialysis container 52 as a fourth embodiment of the present invention. The core member 54 of the present embodiment has a radial cross section extending over the entire length in the lengthwise direction, as in the third embodiment, and the core member 54 is entirely a radial reinforcing portion.

In the present embodiment, the peripheral upper portions 56, 56, 56 are provided at three positions on the periphery at equal intervals, and the connecting portions are connected from the central portion in the peripheral direction of each peripheral upper portion 56, 56, 56 toward the central direction. 58, 58, 58 extend and the connecting portions 58, 58, 58 are connected to each other at the central portion.

Also for the dialysis container 52 of the present embodiment, the same effect as that of the third embodiment can be exhibited.

Further, FIGS. 15 to 17 show core members 60, 62, 64 which can be applied to the dialysis container of the present invention, respectively.

The core member 60 shown in FIG. 15 includes an arcuate portion 66 having a substantially C-shape or a substantially U-shape in a plan view, and a bottom wall portion 68 in which the arcuate portion 66 is curved, and a bottom. It is constituted by side wall portions 70, 70 protruding from both ends of the wall portion 68 in the circumferential direction. A substantially semicircular reinforcing rib 72 projects from the inner peripheral surface of the bottom wall portion 68. The core member 60 is configured by extending the entire length in the length direction with such a cross-sectional shape.

Further, in the core member 62 shown in FIG. 16, a plurality of notches 74 are provided in the sidewall portions 70, 70 at substantially equal intervals in the vertical direction, and the sidewall 70 is provided in each of the plurality of notches 74. Reinforcing ribs 76, 76 projecting inward from the inner circumference 70 are formed. It should be noted that these reinforcing ribs 76, 76 project toward the inner peripheral side at a projecting height that does not reach the central reinforcing rib 72, and the reinforcing ribs 76, 76 face each other with a gap in the vertical direction in FIG. There is.

Furthermore, the core member 64 shown in FIG. 17 is provided with reinforcing ribs 78 having a shape in which the reinforcing ribs 76, 76 in FIG. 16 are connected to each other, that is, provided on the side wall portions 70, 70. In each of the cutouts 74, reinforcing ribs 78 having a substantially semicircular shape project so as to fill the inner peripheral side of the arcuate portion 66.

Any of the reinforcing ribs 72, 76, 78 and the like shown in FIGS. 15 to 17 can be appropriately adopted according to the required deformation rigidity of the core member, and by providing the reinforcing rib to the core member, The degree of freedom in setting the deformation rigidity of the core member can be improved.

Next, FIGS. 18 to 23 show a dialysis container 80 as a fifth embodiment of the present invention. The dialysis container 80 of the present embodiment is provided with the groove-shaped deformation control section 42 on the outer peripheral surface 39 of the bottle-shaped container 11 as in the second embodiment, while the shape of the core member 82 is the above-mentioned. It is different from the one described in the embodiment. That is, in the core member 82 of the present embodiment, the maximum width dimension of the vertical middle portion is smaller than the maximum width dimension of the vertical end portions.

As shown in FIGS. 22 and 23, both end portions in the up-down direction of the core member 82 have a substantially C-shaped cross section in the transverse direction, and a widening having a predetermined length direction in the up-down direction. The parts 84 and 84. The widened portions 84, 84 have openings 86, 86 formed in a part of the circumference (downward in FIGS. 22 and 23), and are opened to the outer peripheral side through the openings 86, 86. In the present embodiment, the widened portions 84, 84 are formed with a circumferential dimension of at least half the circumference.

In addition, the maximum width dimension (the horizontal dimension in FIG. 18) on the inner surfaces of the widened portions 84, 84 is made substantially equal to the inner diameter dimension of the large diameter side tubular portion of the caps 30, 30. The inner surface and the inner surfaces of the caps 30, 30 are smoothly connected. Further, the maximum width dimension on the outer surface of the widened portions 84, 84 is smaller than the inner diameter dimension of the small diameter cylindrical portions 27, 27 provided on the upper and lower inclined peripheral wall portions 24, 26. Therefore, the outer peripheral surfaces of both end portions (widened portions 84, 84) in the vertical direction of the core member 82 are not fixed to the inner peripheral surfaces of the small-diameter cylindrical portions 27, 27, and the core member 82 is a bottle-shaped container. 11 is in a non-fixed state. Alternatively, whether the core member 82 is fixed to the bottle-shaped container 11 via the caps 30 and 30 by being fixed to the large-diameter side tubular portion of the caps 30 and 30, or It is fixed in the bottle-shaped container 11 by being sandwiched between the upper and lower directions.

On the other hand, the vertical middle portion of the core member 82 is a narrow width portion 88 having a maximum width dimension smaller than the maximum width dimensions of the widened portions 84, 84. As shown in FIG. 23, the narrow portion 88 as a whole has a substantially cruciform cross section. That is, four projecting portions 90, 90, 90, 90 projecting outward in the vertical and horizontal directions in FIG. 23 from the central portion are provided. The projecting portions 90, 90, 90, 90 are provided at substantially equal intervals in the circumferential direction, and by these projecting portions 90, the central portion of the center core member 82 in the longitudinal direction extends from the central portion to the outer circumferential side. A protruding radial cross section is formed. Then, each of these projecting portions 90 extends vertically between the widened portions 84, 84 with the radial cross section.

The narrow width portion 88 and the widened portions 84, 84 are formed substantially concentrically, and the protrusion height from the center of the protrusion 90 (width dimension of the protrusion 90) is greater than the radius of curvature of the widened portions 84, 84. Also, the maximum width dimension of the narrow portion 88 (approximately twice the width dimension of the protruding portion 90) is made smaller than the maximum width dimension of the inner surfaces of the widened portions 84, 84. As a result, when projected from the plane direction of the dialysis container 80, substantially the entire narrow portion 88 is located inside the wide portion 84.

Further, the narrow width portion 88 is provided with a plurality of reinforcing ribs 92 spaced apart in the vertical direction. In the present embodiment, the three reinforcing ribs 92, 92, 92 in the narrow width portion 88 are arranged in the vertical direction. They are formed at substantially equal intervals. The reinforcing rib 92 is formed so as to connect the protruding portions 90, 90 adjacent to each other in the circumferential direction in a substantially triangular shape. As shown in FIG. 22, the reinforcing rib 92 has a narrow width at the forming position. The portion 88 has a substantially square cross section.

Further, a reinforcing rib 94 is formed at the connecting portion between the narrow width portion 88 and the wide width portions 84, 84 to improve the strength. That is, on both upper and lower end surfaces of the narrow portion 88, a plate-like reinforcement that interconnects the narrow portion 88 and the inner surfaces of the widened portions 84, 84 at a part of the circumference (left side in FIG. 21). Ribs 94a, 94a are formed. As shown in FIG. 21, the reinforcing ribs 94a, 94a are formed in a substantially triangular shape, and connect the protruding portion 90 located on the left side in FIG. 21 and the inner surfaces of the widened portions 84, 84. It is provided to do.

Further, at both upper and lower ends of the narrow portion 88, the outer surface of the narrow portion 88 and the upper and lower portions of the wide portions 84, 84 are provided on a part of the circumference (both in the left-right direction in FIG. 20 and on the left side in FIG. Plate-shaped reinforcing ribs 94b are formed to mutually connect the direction ends. As shown in FIG. 20 and the like, these reinforcing ribs 94b have a curved surface that gradually expands to the outer peripheral side as it goes outward in the vertical direction, and the outer surface of the narrow width portion 88 and the widened portions 84, 84. The upper and lower ends are connected smoothly. Then, as shown in FIGS. 20 and 21, the reinforcing ribs 94b are provided with the protrusions 90, 90 located on both the left and right sides of FIG. 20, and the protrusion 90 and the widened portion located on the left side of FIG. It is provided so as to connect the upper and lower ends of 84, 84.

In the dialysis container 80 of the present embodiment having such a structure, the core member 82 is provided so as to be stretched between the inflow port 14 and the outflow port 16 inside the bottle-shaped container 11, The same effect as that of the first embodiment can be exhibited.

In particular, in the present embodiment, the maximum width dimension of the vertical middle portion (narrow width portion 88) is smaller than the maximum width dimension of the vertical end portions (widened portions 84, 84) of the core member 82. Therefore, when the dialysis agent 12 is dissolved and discharged, the dialysis container 80 can be deformed to a smaller volume.

On the other hand, since widened portions 84, 84 having large width dimensions are formed at both end portions in the vertical direction of the core member 82, the rigidity of the both end portions in the vertical direction of the core member 82 is sufficiently secured, and dialysis is performed. The dialysis container 80 can be stably attached to the device. In addition, when the dialysis agent 12 is filled in the bottle-shaped container 11, for example, when the injection nozzle is also inserted, the injection nozzle can be stably inserted into the widened portions 84, 84. You can In particular, since the widened portions 84, 84 have an arcuate cross-sectional shape having the openings 86, 86, the widened portions 84, 84 can be easily bent and deformed when the injection nozzle is inserted.

Next, FIG. 24 shows a dialysis container 96 as a sixth embodiment of the present invention. The core member 98 in the present embodiment has a structure similar to that of the core member 82 in the fifth embodiment as a whole, but the middle portion of the middle member 98 in the up-down direction is more than the other portions. The hinge portion 100 is provided which has a small bending strength such as a reduced cross-sectional area.

That is, in this embodiment, the narrow portion 88 of the core member 98 has the notch 102 that opens to the right in FIG. The notch 102 is formed, for example, in a triangular cross section, and extends from the right end portion in FIG. 24 to the middle portion of the protruding portion 90 located leftward in FIG. Further, the notch 102 extends over the entire length of both the projecting portions 90, 90 also in the direction orthogonal to the paper surface of FIG. 24 (front-back direction). As a result, in the protruding portion 90 located on the left side in FIG. 24, the portion facing the notch 102 in the left-right direction in FIG. 24 is thin, and the core member 98 can be bent with the thin portion. Has been done. Therefore, the thin wall portion constitutes the hinge portion 100 having a bending strength smaller than that of the other portions. In addition, in the present embodiment, the notch 102 has a triangular cross section, but the thickness dimension (vertical dimension) of the notch 102 may be substantially 0 to have a slit shape, or the width direction (FIG. Notches may be provided from both sides (in the left-right direction in 24), or notches extending from the outer circumference to the inner circumference over the entire circumference may be employed.

In the dialysis container 96 of the present embodiment having such a structure, since the hinge portion 100 having a small bending strength is formed in the vertical middle portion of the core member 98, the dialysis agent 12 is discharged after being discharged. The core member 98 can be easily removed from the dialysis machine and bent. As a result, the dialysis container 96 can be crushed into smaller pieces and discarded.

The hinge portion 100 (notch 102) may be provided at the position where the widened portion 84 and the reinforcing ribs 92, 94a, 94b are formed instead of or in addition to the narrowed portion 88.

[Example]
A blow-molded product of a bottle-shaped container, which has a structure according to the second embodiment and can be preferably used as the dialysis container of the present invention, was actually prototyped, and the amount of collapse in the dialysis container during depressurization was measured. .. Polyethylene was used as the material of the bottle-shaped container, and containers having a container weight (not including the cap and the core member) of 25 g, 29 g, 33 g, and 39 g were manufactured. The volume of each dialysis container (including the volume of the core member) was 760 mL.

Among these prototype dialysis containers, those having a container weight of 25 g and 33 g were measured for the thickness dimension at each point with a dial gauge. As a result, in the dialysis container having a container weight of 25 g, approximately 1300 to 1600 μm in the vicinity of the upper flange portion (small-diameter tubular portion) and in the central portion (flat plate portion) of the tubular peripheral wall portion in front view and rear view. Approximately 500 to 800 μm, approximately 350 to 600 μm in the outer portion (near the boundary between the flat plate-shaped portion and the curved portion) of the cylindrical peripheral wall portion in front view and rear view, and approximately 250 to 500 μm in the cylindrical peripheral wall portion in side view, lower side In the vicinity of the flange-shaped portion (small-diameter cylindrical portion), it was approximately 1500 to 1900 μm. Further, in a dialysis container having a container weight of 33 g, approximately 1300 to 1600 μm in the vicinity of the upper flange portion (small-diameter tubular portion), and approximately in the central portion (flat plate portion) of the tubular peripheral wall portion in front and rear views. 750 to 1200 μm, approximately 450 to 850 μm in the outer portion (near the boundary between the flat plate-shaped portion and the curved portion) of the cylindrical peripheral wall portion in front view and rear view, approximately 400 to 800 μm in the cylindrical peripheral wall portion in side view, and In the vicinity of the flange-shaped portion (small-diameter cylindrical portion), it was approximately 2000 to 2500 μm. From this, in the bottle-like container of the present invention, it is estimated that the thickness of the peripheral wall portion 25 is preferably about 250 to 1200 μm.

Then, according to the following procedure, the inside of each prototyped dialysis container was depressurized, and the amount of collapse was measured. First, caps were welded to the upper and lower ends of the bottle-like container, and a vacuum pump and a pressure gauge were connected to one port (for example, the upper inlet port). A tube and a three-way stopcock were used for the other port (for example, the lower outlet port), and a syringe was connected so that water could be injected while maintaining airtightness. Then, the vacuum pump was operated to reduce the pressure until the inside of the dialysis container reached a predetermined negative pressure. Further, while maintaining airtightness, the three-way stopcock was operated to fill the dialysis container with water until the dialysis container returned to its original shape. After the dialysis container returns to its original shape, the water in the dialysis container is transferred to the graduated cylinder, and the amount of water required for the dialysis container to return to its original shape is crushed during depressurization. It was measured as a quantity.

The results of such measurement are shown in [Table 1] below. In any dialysis container of any weight, the dialysis container is reduced in volume by exerting a negative pressure, but as a result of examination by the present inventor, a dialysis container having a bottle weight of 44 g or more is also conceivable. In this case, assuming that the volume of the bottle is smaller than the volume reduction rate of 39 g (for example, approximately half), it is desirable to reduce the volume by 5% or more by the negative pressure action of 10 mmHg in the bottle-like container of the present invention, or It is estimated that a negative pressure of 20 mmHg reduces the volume by 20% or more, or a negative pressure of 30 mmHg reduces the volume by 30% or more. In addition, in [Table 1], the value of the collapse amount is represented by mL, and the value in the parentheses is a percentage with respect to the total amount (760 mL). Further, in [Table 1], for the bottle weights of 25 g and 29 g, no measurement was performed when a negative pressure of 30 mmHg was exerted, but the bottle weight of 25 g exerted a negative pressure of 10 mmHg and 20 mmHg. Since the same values are obtained, it is presumed that the same result is obtained when a negative pressure of 30 mmHg is exerted. Further, it is speculated that the result when a negative pressure of 30 mmHg is exerted on the bottle having a weight of 29 g will be larger than that when a negative pressure of 20 mmHg is exerted.

Although the embodiments and examples of the present invention have been described above, the present invention should not be construed as limited by the specific description of the embodiments, and various changes and modifications are made based on the knowledge of those skilled in the art. It can be implemented in a mode in which improvements and the like are added.

For example, in the embodiment and the modes shown in FIGS. 15 to 17, the core members 38, 46, 54, 60, 62, 64, 82, 98 extend in parallel in the vertical direction, but As long as the dialysis container is bridged in between and exerts a reinforcing effect when the dialysis container is attached to the dialysis machine, for example, the dialysis container may be entirely or partially inclined or curved in the vertical direction It is also possible to make the cross-sectional shape partially different as in the fifth and sixth embodiments, which makes it easier to bend the core member after removing the dialysis container from the dialysis machine, for example. The volume at the time of disposal can be further reduced.

Further, in the above embodiment, the inflow port 14 and the outflow port 16 are provided in the same structure so as to face each other on the same straight line, but the shape, size, etc. may be appropriately set so as to be suitable for the dialysis machine. You can

Furthermore, in the above-described embodiment, the tubular peripheral wall portion 18 is formed into a rectangular shape (a non-cylindrical shape) having substantially rounded corners, and the flat plate-shaped portions 20, 20, 20, 20 are provided on four sides of the tubular peripheral wall portion 18. However, if the flat plate-shaped portion is provided on at least a part of the cylindrical peripheral wall portion, the flat plate-shaped portion can be easily deformed by volume reduction. In particular, it is preferable that the tubular peripheral wall portion has a flattened cross-sectional shape such as an ellipse, a rectangle with rounded corners, or a rectangle, rather than a cross-sectional shape that is rotationally symmetrical with respect to the center such as a circle or a square. In addition, in the said embodiment, the flat peripheral part 20 was provided in the cylindrical peripheral wall part 18, and the part which is easy to be crushed in the circumferential direction was formed, but for example, the deformation control part 42 described in the said 2nd Embodiment is. If a portion that is easily crushed in the circumferential direction is formed by being provided, a rotationally symmetrical shape such as a circular cross-sectional shape may be used. However, it is preferable that the bottle-like container is provided with such a crushable portion, but even if the crushable portion is not provided and the atmospheric pressure is evenly applied to the entire outer peripheral surface during depressurization. Good.

Furthermore, in the above-described embodiment, the upper and lower end portions of the peripheral wall portion 25 are the inclined peripheral wall portions 24 and 26 that are inclined in the length direction, respectively. However, the plate-shaped wall portion that spreads in the direction orthogonal to the length direction is used. May be Further, in the above-described embodiment, the tubular peripheral wall portion 18 extends straight in the vertical direction, but it may have, for example, a tapered tubular shape in which the diameter gradually decreases downward as a whole.

Moreover, in the said embodiment and the aspect shown to FIGS. 15-17, the center core member 38,46,54,60,62,64,82,98 is the part opened to the outer periphery over the whole length of a length direction. However, the present invention is not limited to this mode. That is, the core member may have a partially annular structure or a solid structure in the length direction, and the cross-sectional shape may change in the length direction. In short, it suffices if the core member is provided so that the inflow port and the outflow port are closed and the flow of the liquid is blocked.

Further, in the third and fourth embodiments, the upper peripheral portions 48, 56 forming the radial cross section are arcuate, but they do not have to be such and may be linear, for example. On the other hand, the connecting portion does not have to be linear, and may be curved or bent.

When the core member has a radial cross section, the directions extending from the central portion are the two directions of the third embodiment, the three directions of the fourth embodiment, and the four directions of the fifth embodiment. However, the connecting portion and the protruding portion may extend from the central portion in five or more directions. The connecting portions and the protruding portions are preferably provided at substantially equal intervals in the circumferential direction, but are not limited to this aspect.

Furthermore, the shape of the reinforcing ribs provided on the core member is not limited to the modes described in the fifth and sixth embodiments and FIGS. 15 to 17, and the length direction and the circumferential direction of the core member, It may extend in various directions such as a spiral direction. The reinforcing rib may be manufactured separately from the core member and fixed to the core member, but may be integrally formed, for example, by partially thickening the core member. Good.

Furthermore, the hinge portion 100 (notch 102) provided in the sixth embodiment is the middle core member 38, 46, 54 in the first to fourth embodiments or the one shown in FIGS. It may be provided on the core members 60, 62, 64. In addition, in the sixth embodiment, one hinge portion 100 (notch 102) is provided, but a plurality of hinge portions (notches) are separated from each other in the length direction of the core member. It may be provided. The notch for forming the hinge portion may be formed so as to be inclined with respect to the horizontal direction.

Further, the bottle-shaped container does not need to be formed by blow molding. For example, after forming a container with a bottomed cylindrical shape by injection molding or the like, an opening is provided in the bottom wall, or a bottle-shaped container having both side openings is formed as a whole. The container may be integrally formed.

Furthermore, in the above-described embodiment, separate caps 30 and 30 are attached to both ends in the vertical direction of the bottle-shaped container 11, but these caps 30 and 30 are not essential, and for example, a cap is not provided and the bottle-shaped container 11 is bottle-shaped. It may be directly attached to the dialysis device at the small-diameter cylindrical portions at the upper and lower ends of the container, or the bottle-shaped container may be integrally formed including the structural portion of the cap.

10, 40, 44, 52, 80, 96: dialysis container, 11: bottle-shaped container, 12: dialysis agent, 14: inflow port, 16: outflow port, 18: tubular peripheral wall part, 20: flat plate part , 24: upper inclined peripheral wall portion, 25: peripheral wall portion, 26: lower inclined peripheral wall portion, 30: cap (mouth member), 38, 46, 54, 60, 62, 64, 82, 98: core member , 39: outer peripheral surface, 42: deformation control portion, 48, 56: upper peripheral portion, 50, 58: connecting portion, 72, 76, 78, 92, 94a, 94b: reinforcing rib, 84: widening portion, 86: opening portion , 88: narrow portion, 90: protruding portion, 100: hinge portion

Claims (13)

In a dialysis container that contains a dialysis agent and is provided on both sides where the inflow port and the outflow port face each other,
A hollow structure having an integrally formed peripheral wall portion, a deformation that is maintained in a substantially constant shape before and after containing the dialysis agent and is crushed by the atmospheric pressure exerted on the outer peripheral surface of the peripheral wall portion by internal decompression. Adopting a bottle-shaped container with rigidity,
A dialysis container, characterized in that a core member is provided inside the bottle-shaped container, the core member being provided between the opposite sides provided with the inflow port and the outflow port. The bottle-shaped container is provided with the peripheral wall portion integrally formed with inclined peripheral wall portions narrowed at both side opening portions of the cylindrical peripheral wall portion, and the inflow port and the flow port are provided at a tip portion of each inclined peripheral wall portion. The dialysis container according to claim 1, wherein an outlet is provided. The dialysis container according to claim 2, wherein a thickness of the inclined peripheral wall portion provided with the inflow port and the outflow port is larger than that of the cylindrical peripheral wall portion. The dialysis container according to any one of claims 1 to 3, wherein the tubular peripheral wall portion has a non-cylindrical cross-sectional shape having a flat plate portion at least in a part thereof. The dialysis container according to any one of claims 1 to 4, wherein the bottle-shaped container is provided with a groove-shaped deformation control unit. The core member, at least one of both ends attached to the inflow port and the outflow port of the bottle-shaped container, has a structure in which it does not have an annular peripheral wall continuous in the circumferential direction and is opened to the outer periphery. The dialysis container according to any one of claims 1 to 5. The dialysis container according to claim 6, wherein the central core member extends in the length direction at least in a part in the length direction in a circular arc cross section in which a part of the circumference is opened to the outer circumference. At least a part of the length direction of the core member, a plurality of upper peripheral portions divided in the circumferential direction by being opened to the outer periphery at a plurality of locations on the periphery, and each of the peripheral portions extending in the radial direction from the central portion. The dialysis container according to claim 6 or 7, further comprising a radial reinforcing portion that extends in the lengthwise direction and has a radial cross section that includes a connecting portion that connects upper portions to each other. While both end portions in the length direction of the core member extend in the length direction in an arcuate cross section opened to the outer periphery on a part of the circumference, the middle portion in the length direction of the core member is located at the outer peripheral side from the central portion. The dialysis container according to any one of claims 6 to 8, which has a radial cross section protruding in the longitudinal direction and extends in the longitudinal direction. 10. The dialysis according to any one of claims 1 to 9, wherein the maximum width dimension of the middle portion in the length direction middle portion is smaller than the maximum width dimension of both ends of the center core member in the length direction. container. The dialysis container according to any one of claims 1 to 10, wherein the core member is provided with a reinforcing rib. The dialysis container according to any one of claims 1 to 11, wherein a hinge portion, which has a smaller bending strength than other portions, is provided at an intermediate portion in the length direction of the core member. The dialysis container according to any one of claims 1 to 12, wherein the bottle-shaped container has a mouth member separately formed at at least one of the inflow port and the outflow port of a blow-molded product.

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