WO2020138504A1 - Enteral feeding bag and production method for enteral feeding bag - Google Patents

Abstract

Provided are: an enteral feeding bag that has a novel structure and that makes it possible to more stably open an opening portion and to keep the opening portion open; and a production method for the enteral feeding bag.　An enteral feeding bag 10 in which a liquid storage area 24 that has an opening portion 12 at an upper part thereof is formed between overlapping surfaces of top and bottom sheets 18, 18. An action member 46 that extends in the width direction of the sheets 18 is attached to at least one of the top and bottom sheets 18 at the opening portion 12 of the storage area 24, and the opening portion 12 of the storage area 24 is provided with a deformation assistance mechanism that, during the action of opening operation force that presses sheet 18 width direction edge parts of the opening portion 12 toward each other, assists the deformation of the action member 46 in the opening direction of the opening portion 12.

Description

Enteral nutrition bag and method for producing enteral nutrition bag

The present invention relates to an enteral nutrition bag used in the medical field and a method for producing the enteral nutrition bag.

In the medical field, enteral nutrition in which a nutrient solution or drug solution is administered to the stomach or intestine through a tube inserted into the nasal cavity, oral cavity, or fistula of a patient is used to store a predetermined amount of nutrient solution or drug solution. Nutrition bags are used.

In such an enteral nutrition bag, a soft synthetic resin sheet is generally processed into a bag shape to form a liquid containing area inside, and an opening is provided on the upper side.

By the way, when using an enteral nutrition bag, pour a liquid nutrient solution through the opening. This injection work is generally performed by one person, and while holding the opening part of the enteral nutrition bag open with one hand, tilt the container such as a cup held by the other hand and store it in the container. This is done by pouring the liquid into the enteral nutrition bag through the opening.

However, since the main body of the enteral nutrition bag is made of a soft resin sheet, there was a problem that it was difficult to keep the opening part sufficiently and constantly open when pouring the liquid material.

In view of such a problem, Japanese Unexamined Patent Application Publication No. 2011-78737 (Patent Document 1) discloses that a sheet-like opening/closing operation unit is fixed to the outer surface of each of two resin sheets forming an opening portion. A structure has been proposed in which holes for finger insertion are provided on the outer side of the seat, so that both the fingers inserted into each opening/closing operation unit can be opened so as to move them away from each other so that the opening portion can be held in the open state. ..

JP, 2011-78737, A

However, as a result of examination by the present inventor, in the conventional structure described in Patent Document 1, each finger has to be kept wide open to maintain the shape of the opening formed by the soft resin sheet. In particular, in an enteral nutrition bag that is supposed to contain about 1000 ml of liquid, it is difficult for the user to maintain the state in which each finger is spread, and the weight of the liquid acts on the resin sheet at the opening to open it. It became clear that there is a new problem that it is difficult to keep a stable opening shape because the portion is easily deformed.

The problem to be solved by the present invention is to provide an enteral nutrition bag having a novel structure and a method for producing the enteral nutrition bag, which can open the opening portion more stably and can be held in the open state. It is in.

The following describes aspects of the present invention made to solve such problems. In addition, the constituent elements adopted in the respective aspects described below can be adopted in any combination as much as possible.

A first aspect of the present invention is an enteral nutrition bag in which a storage area for a liquid material having an opening portion in the upper part is formed between the overlapping surfaces of the sheets on both front and back sides, wherein the opening portion in the storage area is , An action member extending in the width direction of the sheet is attached to at least one of the sheets on both front and back sides, and an opening operation force for pressing both widthwise edges of the sheet in the opening portion in a direction to approach each other. Upon operation, a deformation assisting mechanism is provided to assist the deformation of the opening of the acting member in the opening direction.

In the enteral nutrition bag of this aspect, the opening portion can be easily opened by deforming the action member whose deformation direction is directed outward by the deformation assisting mechanism by using the force of the fingers in the gripping direction. At the same time, it becomes possible to maintain the open state in a stable shape. In other words, by utilizing the gripping force of the fingers, which is much stronger when it is closed than when it is opened, it is possible to easily and stably open the opening part where the rigidity is increased by the action member to stabilize the deformed shape. Can be opened and held.

Therefore, it is easy to put a liquid such as a nutrient solution or a drug solution into the storage area through the opening, and even if the weight of the liquid becomes large, the opening may be unintentionally deformed or closed. Can be prevented.

A second aspect of the present invention is the enteral nutrition bag according to the first aspect, wherein the opening portion of the storage area extends in the width direction of the sheet on both the front and back sides of the sheet. The member is attached, and the deformation assisting mechanism is configured by forming the acting member into a continuous structure in which at least one end portion in the width direction of the sheet is folded back.

In the enteral nutrition bag of this aspect, since the action members attached to the front and back sheets are connected to each other at least at one end, the opening operation force inward in the width direction is input between the both ends of the action member. Then, a moment that induces a deformation that makes it convex toward the opening direction of the opening acts on the portion of the acting member attached to the seat. Therefore, since the folded action members are attached to both the front and back sheets, when the opening operation force acts, the action members are deformed in the opening direction of the opening portion to stabilize the opening portion. And open it.

A third aspect of the present invention is the enteral nutrition bag according to the second aspect, wherein in the operating member made of the continuous structure, the folded end has a plurality of folding lines. It is structured.

In the enteral nutrition bag of this aspect, it becomes possible to provide an action portion for the opening operation force between the fold lines, and the opening operability can be improved.

A fourth aspect of the present invention is the enteral nutrition bag according to the third aspect, wherein the acting member is in the shape of a plate spreading along the sheet, and the folding structure has two fold lines. In addition, the action surface of the opening operation force is provided between the two broken lines.

In the enteral feeding bag of this aspect, it becomes easy to transmit the opening operation force to the portion of the action member attached to each sheet through each fold line in the opening direction. In particular, the bending due to the pressing force exerted on the working surface formed between the two fold lines is transmitted as a bending force in the direction of expanding the portion of the acting member attached to each sheet outward through the fold line. You can open the opening. The acting surface formed between the two fold lines may be a substantially flat surface or a curved surface in which the two fold lines are curved or bent so that the central portion is recessed inward.

A fifth aspect of the present invention is the enteral nutrition bag according to any one of the first to fourth aspects, wherein the deformation assisting mechanism causes the acting member to be convex on the outer surface side of the sheet. The sheet has a curved or bent cross-sectional shape and extends in the width direction of the sheet.

In the enteral nutrition bag of this aspect, the acting member has a cross-sectional shape that is convex on the outer surface side, so that it is easier to bend in the direction of bulging outward rather than inward of the opening. As a result, the action member is elastically deformed so as to bulge outward by the opening operation force, and the opening portion can be stably opened.

According to a sixth aspect of the present invention, in the enteral nutrition bag according to any one of the first to fifth aspects, the deformation assisting mechanism is configured such that the action member has the opening portion in the width direction of the sheet. It is configured by having an initial shape curved in the opening direction.

In the enteral nutrition bag of the present aspect, in the initial shape, the central plane connecting the neutral axis of the action member in the lengthwise direction or the central axis connecting the center of the neutral axis of the action member in the lengthwise direction is curved outward. As a result, the opening operation force applied from both ends of the acting member in the compression direction causes a bending moment that causes the acting member to bend outward. As a result, the opening operation force elastically deforms outward so that the acting member has a large curvature, and the opening portion can be stably opened.

A seventh aspect of the present invention is the enteral nutrition bag according to the sixth aspect, wherein the acting member is accommodated in the package in a state of being curved in the opening direction of the opening portion in the width direction of the sheet. It is packaged.

An eighth aspect of the present invention is the enteral nutrition bag according to the sixth or seventh aspect, wherein the opening has a wide portion with a large width dimension and a narrow portion with a small width dimension. A pressing portion to which the opening operation force is applied is provided on the outer side in the width direction of the narrow portion, and the acting member is provided on the wide portion.

In the enteral nutrition bag of this aspect, the opening operation force is transmitted to the action member provided in the wide portion by pressing the narrowed portion in the opening portion and exerting the opening operation force. The opening can be opened wide. In particular, since the acting member has an initial shape curved in the opening direction of the opening portion, it is possible to open the entire wide portion largely with a smaller operating force.

A ninth aspect of the present invention is the enteral nutrition bag according to any one of the first to eighth aspects, in which the deformation assisting mechanism has a notch extending vertically with respect to an outer surface of the acting member. It is configured by being provided.

In the enteral nutrition bag of this aspect, when the opening operation force acts on the action member in the opening portion in the width direction of the sheet, the notch provided on the outer surface of the action member opens, so that the action member is opened. It is easy to deform so that it becomes convex toward the opening direction. The deformation of the acting member that becomes concave toward the opening direction of the opening portion is unlikely to occur because the inner surfaces of the cuts are pressed against each other. As a result, the action member is induced to deform in the direction in which the opening portion opens in response to the action of the opening operation force, and a stable opening of the opening portion is realized.

Also, since the notch is provided on the outer surface to guide the deformation direction of the action member, the initial action member to which the opening operation force is not applied can be made into a flat shape. Therefore, it is easy to fix the sheet and insert the sheet. Furthermore, since the opening portion in which the action member is arranged has a flat initial shape, it is difficult to be bulky during transportation and storage.

A tenth aspect of the present invention is the enteral nutrition bag according to any one of the first to ninth aspects, in which the deformation assisting mechanism acts toward the center from both sides in the width direction of the sheet. The thickness dimension of the member is increased to the outer surface side of the sheet, and the central axis of the acting member extending in the width direction of the sheet is formed to be convex to the outer surface side of the sheet.

In the enteral nutrition bag of this aspect, when the opening operation force is input from both side portions of the action member in the width direction of the sheet, the action member is likely to be deformed in the opening direction of the action member, so that the opening portion can be stably opened. Is realized.

Guidance of the deformation direction of the acting member by the deformation assist mechanism is realized by increasing the thickness dimension of the acting member from the both sides in the seat width direction toward the center toward the outer surface side of the seat. Therefore, for example, when the action member is fixed to the outer surface of the sheet, the inner surface of the action member fixed to the outer surface of the sheet is made flat, so that the action member is easily fixed to the sheet.

An eleventh aspect of the present invention is the enteral nutrition bag according to any one of the first to tenth aspects, wherein the deformation assisting mechanism is provided in a width direction of the sheet at the opening portion of the accommodation area. At least one edge portion is configured such that the sheets on both front and back sides are not fixed in a state of being overlapped with each other but are open ends.

In the enteral feeding bag of this aspect, at least one edge portion in the width direction of the sheet on the front and back sides is an open end that is not fixed to each other, and thus resistance to deformation in the opening direction of the opening portion is obtained. The power is eliminated. As a result, when the opening operation force acts, the action member attached to the opening portion of the seat is not constrained by the fixation of the front and back sheets, and is easily deformed in the opening direction of the opening portion. The opening will be easier to open.

A twelfth aspect of the present invention is the enteral nutrition bag according to any one of the first to eleventh aspects, wherein the sheet is provided with a storage portion extending in a width direction of the sheet. By accommodating the acting member in the accommodating portion, the acting member is attached to the seat, while the inlet is provided on one side in the width direction of the seat in the accommodating portion, and A peripheral wall portion of the accommodating portion partially extends outward in the circumferential direction of the inlet, and a guide surface is provided for guiding the tip of the acting member inserted into the accommodating portion to the inlet. is there.

In the enteral nutrition bag of this aspect, the action member can be easily attached to the seat by inserting the action member into the accommodation portion of the seat. Further, by moving the action member along the guide surface, the action member is guided to the inlet of the accommodation portion, so that the operation member can be easily inserted into the accommodation portion.

In addition, in the enteral nutrition bag according to the present invention, it is preferable that the deformation assisting mechanism is configured by a chuck-shaped sealing portion that can open and close the opening portion.

In the enteral nutrition bag of this aspect, when the opening operation force is applied to the action member, the zipper-shaped sealing portion provided in the opening portion is opened in advance. As a result, the chuck-shaped sealing portion has a curved shape that is convex toward the opening direction of the opening portion, and the sheet near the chuck-shaped sealing portion has a curved shape that is convex toward the opening direction of the opening portion. It Therefore, when the opening operation force is applied to the action member, the deformation direction of the action member is guided to the opening direction, and the opening portion can be stably opened.

Further, the enteral nutrition bag according to the present invention is provided with a zipper-shaped sealing portion that can open and close the opening portion, and the zipper-shaped sealing portion is located closer to the opening end of the opening portion than the zipper-shaped sealing portion. It is preferable that an action member is provided.

In the enteral nutrition bag of this aspect, the opening portion is deformed in the opening direction at a position closer to the opening end by the deformation of the acting member in the opening direction. This makes it easy to secure a large opening area at the opening end. Further, a portion of the opening portion located between the chuck-shaped sealing portion and the acting member and apart from the opening end is reinforced by the chuck-shaped sealing portion and the acting member. Therefore, the force in the opening direction due to the deformation of the acting member is efficiently transmitted, and the portion of the opening portion apart from the opening end can be sufficiently opened.

A thirteenth aspect of the present invention is the enteral nutrition bag according to any one of the first to twelfth aspects, which is provided with a zipper-shaped sealing portion capable of opening and closing the opening. The side closer to the opening end of the opening portion than the chuck-like sealing portion is a closed end in which the sheets on both front and back sides are fixed in a state of being superposed on each other at least at one end in the width direction of the sheet. Since the closed end has an inclined shape, the opening width dimension of the opening portion increases toward the opening end side, and the inclined closed end has a width direction of the seat with respect to the action member. It is provided outside the.

In the enteral nutrition bag of this aspect, the closed end in the inclined shape that expands toward the open end is provided on the outer side in the seat width direction with respect to the action member, so that the closed end in the inclined shape is formed. On the other hand, when the force is exerted from the acting member, the opening portion is well spread in the shape that expands upward.

A fourteenth aspect of the present invention is, when manufacturing the enteral nutrition bag according to the fifth aspect, presses the action member attached to the opening portion outward in the opening direction of the opening portion. It is a method for producing an enteral nutrition bag that gives a convex habit.

In the method for producing an enteral nutrition bag of this aspect, the working member is easily formed into a shape that is convex outward in the opening direction by pressing. Since the action member is habituated in the state in which the action member is attached to the opening portion, the opening portion of the action member is larger than that in the case where the action member having a curved or bent shape in advance is attached to the opening portion. Can also be easily attached.

According to the present invention, in the enteral nutrition bag, it is possible to more stably open the opening portion and further maintain the opening state. Further, it is possible to easily manufacture and provide an enteral nutrition bag capable of opening the opening portion more stably and holding it in the opened state.

The front view which shows the enteral nutrition bag as the 1st Embodiment of this invention. Enlarged view corresponding to section II-II of FIG. Enlarged view corresponding to section III-III in FIG. It is a figure explaining the operation which opens the opening of the enteral nutrition bag shown in Drawing 1, (a) shows the state where the opening was closed, and (b) shows the state where the opening was opened, respectively. Sectional drawing which shows the enteral nutrition bag as the 2nd Embodiment of this invention. The perspective view of the elastic member which comprises the enteral nutrition bag as the 3rd Embodiment of this invention. It is a figure which shows the principal part of the enteral nutrition bag provided with the elastic member shown in FIG. 6, (a) shows the front side and (b) shows the back side, respectively. It is sectional drawing which shows the principal part of the enteral-nutrition bag provided with the elastic member shown in FIG. 6, (a) shows the attachment completed state of an elastic member, (b) shows the state before attachment of an elastic member, respectively. Show. A perspective view of an elastic member which constitutes an enteral feeding bag as another embodiment of the present invention. The perspective view of the elastic member which comprises the enteral nutrition bag as the 4th Embodiment of this invention. The perspective view of the elastic member which comprises the enteral nutrition bag as the 5th Embodiment of this invention. Front view of an enteral nutrition bag including the elastic member shown in FIG. A photograph showing a state in which an opening operation force is exerted on the enteral nutrition bag shown in FIG. The photograph which shows the opening state of the opening part of the enteral nutrition bag shown in FIG. The front view which shows the enteral nutrition bag as the 6th Embodiment of this invention. Exploded perspective view explaining the manufacturing process of the enteral nutrition bag shown in FIG. Front view showing an enteral nutrition bag as a seventh embodiment of the present invention Exploded perspective view illustrating the manufacturing process of the enteral nutrition bag shown in FIG. The front view which shows the enteral nutrition bag as the 8th Embodiment of this invention. It is sectional drawing of the opening part of the enteral nutrition bag shown in FIG. 19, and is a figure corresponded to the XX-XX cross section of FIG. Sectional drawing explaining the process of giving a habit to the opening part of the enteral nutrition bag shown in FIG. Front view showing an enteral nutrition bag as a ninth embodiment of the present invention A perspective view of an elastic member which constitutes an enteral feeding bag as another embodiment of the present invention. A perspective view of an elastic member constituting an enteral nutrition bag as another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 to 3 show an enteral nutrition bag 10 as a first embodiment of the present invention. This enteral nutrition bag 10 has a bag structure that is long in the up-down direction in FIG. A port section 16 is provided as a working port. Then, a liquid material such as a nutrient solution is housed inside and used as a nutritional supplement supply bag. The bag body 22 (described later) of the enteral nutrition bag 10 in FIGS. 2 to 4 has a reduced scale in the thickness direction (left and right direction in FIG. 2) in comparison with other directions for easy understanding. And illustrated.

More specifically, the enteral nutrition bag 10 has a structure in which outer sheets 18, 18 as sheets are superposed on each other and fixed to each other at a fixing portion 20 in the periphery thereof, and has a bag-shaped bag body 22. Is equipped with. The fixing portions 20 are provided in three directions around the outer sheets 18, 18 that are superposed on each other, and the opening portion 12 is provided on the upper side (the upper side in FIG. 1) where they are not fixed. The fixing means for fixing the front and back outer sheets 18, 18 in the fixing portion 20 may be, for example, adhesion by an adhesive, but is not particularly limited, and preferably heat welding (heat sealing) is adopted. It By configuring the front and back outer sheets 18, 18 into a bag shape that opens upward, a storage area 24 for storing a liquid material is provided inside the bag body 22, that is, between the front and back outer sheets 18, 18. Has been formed.

Further, in the opening portion 12 of the bag body 22 above the accommodation area 24, the bag-shaped body 22, in other words, the zipper-like sealing portion 26 that can open and close the accommodation area 24 is attached to the outer sheets 18, 18 on the front and back sides. It is provided. In short, the opening portions 12 are formed by superposing the outer sheets 18, 18 on the front and back sides so as to be openable and closable by the chuck-shaped sealing portion 26.

The chuck-shaped sealing portion 26 is capable of repeatedly opening and closing the opening portion 12, and is capable of liquid-tightly sealing the storage area 24 from the outside in the closed state. Although the specific structure of the chuck-shaped sealing portion 26 is not limited, for example, it is provided on the inner surface of one outer sheet 18 and a groove extending in the width direction of the opening 12 and on the inner surface of the other outer sheet 18. Various well-known structures such as a resin-made chuck configured by a protrusion extending in the width direction of the opening portion 12 can be adopted. The chuck-shaped sealing portion 26 of the present embodiment is a resin-made chuck including a concave groove and a convex strip, and is closed by pressing the concave groove and the convex strip against each other and elastically fitting the concave and convex.

In addition, in FIG. 1, the concave-convex fitting portion forming the chuck-shaped sealing portion 26 is formed inside the bag body 22 on each inner surface of the outer sheets 18 and 18 on the front and back sides. , 18 are made of a transparent material, and the chuck-shaped sealing portion 26 is shown by a solid line for the purpose of facilitating understanding of the structure. Further, the chuck-shaped sealing portion 26 is formed over the entire length of the outer sheet 18 in the opening portion 12 in the width direction (left-right direction in FIG. 1) so that the opening portion 12 can be sealed.

Further, a pair of flap-shaped portions 28, 28 are formed on the upper end of the bag body 22. That is, a pair of flap-shaped portions 28, 28 extending above the chuck-shaped sealing portion 26 (upper side in FIG. 1) are formed on the outer sheets 18 and 18 on the front and back sides which form the bag body 22. And are superimposed on each other.

In this embodiment, the pair of flap-shaped portions 28, 28 have the same shape, but the pair of flap-shaped portions may not have the same shape. For example, at least one of the pair of flap-shaped portions is provided with a tab protruding outward, and the tab is pinched with fingers to exert an external force in a direction to open the pair of flap-shaped portions. It is possible to make it easier.

As the material for the outer sheets 18 on the front and back sides forming the bag body 22, a conventionally known soft resin sheet material can be appropriately adopted in consideration of resistance to a liquid material and the like. That is, the front and back outer sheets 18, 18 are made of a resin material such as polypropylene, polyethylene, polyester, or polyvinyl chloride, and are preferably transparent flexible resin sheets. The front and back outer sheets 18, 18 are preferably made of the same resin material, but may be made of different resin materials. Further, in the bag body 22, the outer sheets 18, 18 may be formed of the same material over the whole, for example, the flap-shaped portion 28 and the portion forming the accommodation area 24 may be formed of different materials. The forming material may be different depending on the part.

Further, the fixing portion 20 extends to the upper end at one end (left side in FIG. 1) in the width direction of the pair of flap-shaped portions 28, 28. As a result, one end of the pair of flap-shaped portions 28, 28 serves as a closed end 30 fixed to each other.

On the other hand, at the other end of the pair of flap-shaped portions 28, 28 in the width direction (right side in FIG. 1), the fixing portion 20 does not extend to the upper ends of the pair of flap-shaped portions 28, 28. .. In the present embodiment, the right fixing portion 20 extends only to the lower ends of the pair of flap-shaped portions 28, 28, so that the other end portion of the pair of flap-shaped portions 28, 28 is aligned in the stacking direction. The open ends 32 can be separated from each other. In short, at the open end 32, the pair of flap-shaped portions 28, 28 are not fixed to each other in the range of half or more from the upper end with respect to the length in the vertical direction, but are openable to be separated from each other. When it is a closed end, the front and back sheets tend to bend in the direction in which the closed end is curved because the closed end is composed of front and back sheets. It is possible to reduce the action of force on the front and back sheets. Further, in the case of a closed end, in the form in which the lateral side in the width direction is pressed inward to open, the closed end moves inward in the width direction, and the opening area of the open end becomes small. Since the widthwise end of the opening end 174 is movable in the opening direction due to the presence, it is unlikely that the widthwise end of the opening end 174 moves inward in the widthwise direction in conjunction with the opening operation. The opening area of the opening end 174 can be increased. In addition, both ends of the pair of flap-shaped portions 28, 28 in the width direction may be open ends 32, or both ends may be closed ends 30, but it is preferable. At least one end is the open end 32.

In particular, in the present embodiment, the fixed portion 20 on the closed end 30 side of the pair of flap-shaped portions 28, 28 opens from the closed end 30 side as it goes downward (downward in FIG. 1) from the upper end of the bag body 22. The end 32 is inclined (from left to right in FIG. 1). As described above, the pair of flap-shaped portions 28, 28 are inclined and welded on the closed end 30 side, so that the inclined guide portion 34 is formed. Then, in the open state in which the flap-shaped portions 28, 28 described later are separated from each other, the opening dimension in the width direction (left-right direction in FIG. 1) of the opening portion 12 is determined by the inclined guide portion 34 at the lower end of the opening portion 12. It gradually increases from the top to the top.

Furthermore, the inner sheets 38, 38 are superposed on the pair of flap-shaped portions 28, 28. The inner sheets 38, 38 are the same synthetic resin sheets as the outer sheets 18, 18 and have a height direction (vertical direction in FIG. 1) and a width direction (in FIG. 1) of the pair of flap-shaped portions 28, 28. In the middle portion in the left-right direction), the flap-shaped portions 28, 28 are superposed on the inner surface side. The flap-shaped portions 28, 28 and the inner sheets 38, 38 that are overlapped with each other are fixed to each other at the peripheral fixing portion 36. As a result, the pair of flap-shaped portions 28, 28 are respectively formed with bag-shaped portions 40 having a space inside as a storage portion. Since the inner sheets 38, 38 are fixed to the upper end portions of the outer sheets 18, 18, the opening portion 12 of the outer sheets 18, 18 is reinforced by the inner sheets 38, 38, and the partial rigidity Improvements are being made.

The bag-shaped portion 40 extends in the width direction (horizontal direction in FIG. 1) with a substantially constant vertical dimension, and has one end sealed and the other end shaped like a flap of the outer sheet 18. It is open to the outside through an inlet 42 that opens to the portion 28. The peripheral wall portion of the bag-shaped portion 40 is configured by the flap-shaped portion 28 of the outer sheet 18 and the inner sheet 38 that are fixed to each other at the fixing portion 36. In the present embodiment, by accommodating and fixing the inner sheets 38, 38 to the inner surface, which is the superimposing surface of the outer sheets 18, 18, the inner sheet 38, 38 is provided with a space on the inner surface side (bag-shaped portion). 40) has been formed. According to this, the outer sheet 18 and the inner sheet 38 can be easily heat-welded, and the bag-shaped portion 40 having excellent durability can be obtained at low cost. However, for example, by accommodating and fixing another sheet on the outer surface of the outer sheets 18, 18, it is possible to form a housing portion (bag-shaped portion) having a space on the outer surface side of the outer sheets 18, 18. is there.

The fixing means of the fixing portion 36 for forming the bag-shaped portion 40 is the same as the above-mentioned fixing portion 20, and examples thereof include adhesion with an adhesive, and are not particularly limited, but heat welding ( Heat sealing) is preferably adopted. The material of the outer sheet 18 and the material of the inner sheet 38 may be the same or different from each other.

The inlet 42 can be formed by a notch provided in the outer sheet 18, a window-shaped cutout, a notch, or the like. The inlet 42 of the present embodiment is formed by a rectangular window-shaped cutout opening to the outer sheet 18, and in the peripheral wall portion of the bag-shaped portion 40, the portion formed by the inner sheet 38 is formed by the outer sheet 18. It extends to the outer side in the width direction (right side in FIG. 1) than the portion formed. The portion of the inner sheet 38 exposed to the outside through the cutout formed in the outer sheet 18 serves as a guide surface 44 that continues to the inlet 42.

The inlet 42 can also be formed, for example, by making a U-shaped cut into the outer sheet 18 to form a segment and folding the segment between the overlapping surfaces of the outer sheet 18 and the inner sheet 38. is there. According to this, the outer sheet 18 and the inner sheet 38 are separated from each other by the segment, and the inlet 42 which is the opening of the bag-shaped portion 40 is widened, so that the elastic member 46 described later can be inserted into the bag-shaped portion 40. Can be easy.

Elastic members 46 as acting members are inserted in the bag-shaped portions 40, 40, respectively. The elastic member 46 is a long plate-shaped member made of metal, synthetic resin, or composite material, and has elasticity with respect to bending deformation that bends in the length direction that is the left-right direction in FIG. 1. The elastic member 46 is harder than the bag body 22 and has a larger deformation rigidity in the bending direction than the bag body 22. As shown in FIG. 3, the elastic member 46 of the present embodiment is curved so as to draw a curve that is convex outward in the longitudinal direction (the left-right direction in FIGS. 1 and 3). The elastic member 46 may be curved with a substantially constant radius of curvature, or the radius of curvature may be gradually changed. However, as a whole, the elastic member 46 faces the outer sheet 18 in a state of being housed in the bag-shaped portion 40 described later. It is convex.

In the present embodiment, the plate-shaped elastic member 46 is illustrated, but the elastic member may be, for example, a rod shape or a sheet shape, and is a long member having a large deformation rigidity with respect to the outer sheet 18. Is adopted. The elastic member 46 is preferably made of synthetic resin such as polypropylene, polyethylene, acrylonitrile-butadiene-styrene copolymer synthetic resin (ABS resin), nylon resin, polycarbonate, acrylic resin, hard vinyl chloride, etc. Formed by.

The elastic member 46 is inserted into the bag-shaped portion 40 through the inlet 42. As a result, the elastic member 46 is attached to the outer sheet 18 at the opening 12 and extends in the width direction of the outer sheet 18. In this embodiment, as shown in FIGS. 2 and 3, elastic members 46 are attached to the outer sheets 18 on both front and back sides. The elastic member 46 may be attached to only one of the front and back outer sheets 18.

As shown in FIG. 1, the elastic member 46 of the present embodiment is shorter than the bag-shaped portion 40 in the width direction of the outer sheet 18 and is entirely housed in the bag-shaped portion 40. It may have the above length and may protrude from the bag-like portion 40. Further, the outer sheet 18 and the inner sheet 38 forming the wall portion of the bag-shaped portion 40 are fixed to each other at the end portion on the side of the inlet 42, so that the elastic member 46 is prevented from coming off from the bag-shaped portion 40. You can also When the inlet 42 is provided on the closed end 30 side, the elastic sheets 46 are prevented from coming off by fixing the outer sheets 18, 18 to each other at the ends of the bag-shaped portion 40 on the inlet 42 side. It is possible that the inner sheets 38, 38 need not be fixed. Note that, in addition to fixing the end portion of the bag-shaped portion 40 on the inlet 42 side, for example, when a hole or a constriction is provided in the intermediate portion of the elastic member, the bag-shaped portion is formed at the hole or constricted portion. By fixing the peripheral wall portion of the portion 40, it is possible to prevent the loosening by locking the hole or constriction of the elastic member and the fixing portion of the bag-shaped portion 40. Further, the elastic member 46 of the present embodiment is formed into a curved plate shape, and both ends of the bag-shaped portion 40 in the insertion/removal direction (the left-right direction in FIGS. 1 and 3) are inclined toward the inner sheet 38 side. Therefore, the slip-out from the inlet 42 formed in the outer sheet 18 is unlikely to occur.

By disposing the curved plate-shaped elastic member 46 in the bag-shaped portion 40 in a housed state, the flap-shaped portions 28, 28 have a force in a direction of opening the opening portion 12, that is, a force in the opening direction based on the shape of the elastic member 46. Then, a force is exerted in the direction in which the flap portions 28, 28 are separated from each other.

A through hole 48 is formed in the upper portion of the bag body 22. The through hole 48 is provided above the opening portion 12 of the two outer sheets 18, 18 (upper side in FIG. 1). In the present embodiment, the through hole 48 is formed in the extension piece 50 provided on the closed end 30 side (left side in FIG. 1) of the pair of flap-shaped portions 28, 28, and is in a state of being overlapped with each other. The pair of fixed flap-shaped portions 28, 28 penetrates. The through holes 48 are preferably arranged side by side with the bag-shaped portion 40 in the width direction of the bag body 22, and are provided at substantially the same position in the vertical direction. The through hole 48 does not necessarily have to be formed in the overlapping portion of the pair of flap-shaped portions 28, 28. For example, the extension piece 50 is formed only in one flap-shaped portion 28, and the extension piece 50 is formed. The through hole 48 may be formed. Further, for example, it is possible to form the through hole 48 in the peripheral wall portion of the bag-shaped portion 40 and use the through hole 48 as the inlet 42 of the bag-shaped portion 40.

By inserting a hanging hook (not shown) or the like into the through hole 48, the enteral nutrition bag 10 can be suspended and supported by a drip stand or the like (not shown). Further, the through hole 48 can be inserted with fingers. The through hole 48 of the present embodiment is a hooking hole for hooking the enteral nutrition bag 10 on a hanging hook of a stand or the like, and an operator who performs a work of injecting the liquid material into the storage area 24 through the opening 12 (described later). ) Also serves as a finger insertion hole for supporting the enteral nutrition bag 10 with one hand.

The bottom portion of the bag body 22 is provided with a port portion 16 that penetrates the accommodation area 24 in and out. In the present embodiment, the port portion 16 is provided at a corner portion of the lower end edge portion of the bag body 22 that diagonally faces the through hole 48. The port portion 16 is made of a hard material such as synthetic resin, and is preferably made more rigid than the two outer sheets 18 and 18 that form the bag body 22. The port portion 16 is sandwiched between the front and back outer sheets 18 and 18 and penetrates through the fixing portions 20 of the two sheets 18 and 18, and is welded integrally with the both sheets 18 and 18, for example. Or fixed by adhesion or the like.

Then, the port portion 16 is provided with an external opening as shown by a two-dot chain line in FIG. The tube 14 is connectable. The outer tube 14 may be a conventionally known one and is not a constituent of the present invention, so a detailed description thereof will be omitted. However, the outer tube 14 is a flexible tube and may be a chamber (drip tube) or a cleanser as necessary. A (flow rate adjuster), a connector and the like (none of which are shown) are provided, and they are inserted through a nasal cavity, a fistula or the like to reach the inside of a patient (not shown) such as the stomach or small intestine. Then, the liquid material such as the nutrient solution stored in the storage area 24 is administered into the patient's body through the external tube 14.

Below the middle portion in the height direction of the bag body 22 and the housing area 24, there is a widened portion 52 that is wider in the width direction toward the open end 32 side (right side in FIG. 1) than in the width direction. The position of the center of gravity is biased toward the open end 32 side. Further, a through hole 48 serving as a support point in a state of being suspended from a suspension hook of a stand (not shown) is provided at an upper end portion of the enteral nutrition bag 10 on the closed end 30 side. As a result, when the enteral nutrition bag 10 is suspended on a stand (not shown), the enteral nutrition bag 10 is left standing in the clockwise direction about the through hole 48 from the state of FIG. As a result, the port portion 16 is positioned so as to extend substantially vertically. Further, since the peripheral portion of the port portion 16 in the storage area 24 is narrow, when the enteral nutrition bag 10 is suspended on the stand, the liquid material stored in the storage area 24 is stored in the port portion 16. It is easy for the liquid to flow in, and the amount of liquid remaining in the storage area 24 can be reduced.

According to the enteral nutrition bag 10 having such a structure, as shown in FIG. 4, when the operator performs the operation of inserting the liquid material such as the nutrient solution or the drug solution into the accommodation area 24 of the bag body 22, as shown in FIG. It is possible to open and hold the opening 12 with one hand.

First, as shown in FIG. 4A, the operator inserts the thumb 54 into the through hole 48 of the enteral feeding bag 10, and sets the index finger 56 and the middle finger 58 to the flap-shaped portion 28 of the enteral feeding bag 10, 28 to the open end 32 side. Alternatively, the index finger 56 or the middle finger 58 may be inserted into the through hole 48, and the thumb 54 may be applied to the flap-shaped portions 28, 28 on the open end 32 side. The fingers applied to the widthwise ends of the flap-shaped portions 28, 28 are not necessarily limited to the index finger 56 or the middle finger 58. Specifically, for example, instead of the index finger 56 and the middle finger 58, the ring finger or the little finger may be applied, or a plurality of the index finger, the middle finger, the ring finger, and the little finger may be applied. In short, the thumb and at least one of the index finger, the middle finger, the ring finger, and the little finger may be applied to both ends of the flap-shaped portions 28, 28 in the width direction.

Next, the operator applies an opening operation force, which is a compression force in the width direction, to the opening portion 12 of the enteral nutrition bag 10 in a direction of reducing the distance between the thumb 54 and the index finger 56 and the middle finger 58. As a result, a compression force in the width direction of the outer sheet 18 (vertical direction in FIG. 4) acts on the elastic members 46, 46 provided in the opening portion 12 of the enteral nutrition bag 10. The operator can grip the enteral nutrition bag 10 with one hand by applying an opening operation force to the elastic member 46 having higher rigidity than the outer sheets 18, 18.

Since the elastic member 46 has an initial shape that is curved in the width direction of the outer sheet 18 in advance, when it is compressed by the opening operation force, it elastically deforms so as to increase its curvature. The elastic member 46 is arranged in the bag-shaped portion 40 so as to be convex toward the outer surface side of the outer sheet 18 which is the opening direction of the opening portion 12 in the initial shape. Therefore, the elastic members 46, 46 are deformed in the opening direction of the opening portion 12 so as to separate from each other by the action of the opening operation force. As described above, in the present embodiment, the deformation assisting mechanism that assists the deformation of the opening portion 12 in the elastic member 46 in the opening direction is bent by the elastic member 46 in the opening direction of the opening portion 12 in the width direction of the outer sheet 18. It is configured by having an initial shape.

The outer sheets 18, 18 forming the wall portion of the opening portion 12 are more flexible than the elastic members 46, 46, and therefore follow the deformation of the elastic member 46 in the opening portion 12. Therefore, as shown in FIG. 4B, when the elastic members 46, 46 deform in the opening direction of the opening portion 12, the outer sheets 18, 18 of the opening portion 12 follow and deform, and the opening portion 12 opens. ..

In the present embodiment, the flap-shaped portions 28, 28 holding the elastic member 46 have one end in the width direction of the outer sheet 18 as the open end 32. Therefore, the deformation of the outer sheets 18, 18 due to the deformation of the elastic members 46, 46 is allowed without being restrained at the open end 32, and the opening portion 12 becomes easier to open. As described above, in the present embodiment, the one edge portion of the flap-shaped portions 28, 28 in the width direction is the open end 32, so that the deformation of the opening portion 12 by the elastic member 46 in the opening direction is assisted. The deformation assisting mechanism is also configured by the open end 32. The deformation assisting mechanism may be provided in a plurality of two or more kinds as in the present embodiment, but may be provided in only one kind.

Since the meshing force of the chuck in the chuck-shaped sealing portion 26 can be adjusted by the shape and size of the chuck, the meshing force of the chuck is adjusted so that the chuck is opened from the closed state by the action of the opening operation force. It is also possible to switch to the state. When the engaging force of the chuck is set to be strong in order to improve the reliability of the chuck, the chuck-shaped sealing portion 26 may be opened in advance.

Then, a liquid such as a nutrient solution is poured into the storage area 24 from a cup (not shown) to the opened opening 12. After injecting the liquid material into the storage area 24, the opening operation force is released, and the chuck of the chuck-shaped sealing portion 26 is closed, whereby the storage area 24 is sealed. Thereby, it is possible to prevent the liquid material from leaking from the opening portion 12 of the enteral nutrition bag 10, and reduce the risk that the liquid material in the storage area 24 is contaminated with bacteria or the like.

Note that the member pressed by the finger may be the chuck-shaped sealing portion 26 instead of the elastic member 46. Further, it is preferable that the opening portion 12 is previously opened in the opening direction by the action member, so that the opening portion 12 does not move in the closing direction when the zipper sealing portion 26 is pressed with a finger, The opening portion 12 can be surely opened in the opening direction by pressing the finger.

A larger load acts on the hand holding the enteral nutrition bag 10 as the injection amount of the liquid material into the storage area 24 increases, but in the present embodiment, the thumb 54 is inserted into the through hole 48. Therefore, it is easy to support the weight of the liquid material.

Although FIG. 4 shows a state where the enteral nutrition bag 10 is held by the left hand, for example, the enteral nutrition bag 10 is held by the right hand and the liquid is poured into the storage area 24 by the left hand. Is also possible. When the operator is right-handed, if the enteral nutrition bag 10 is held by the left hand as shown in FIG. 4, the liquid material can be poured into the accommodation area 24 with high precision by the handed hand. Alternatively, by gripping the enteral nutrition bag 10 with the right hand, the opening 12 of the enteral nutrition bag 10 can be more reliably maintained in the open state. Therefore, it is preferable that the enteral nutrition bag 10 has front and back symmetry.

The enteral nutrition bag 10 in which an appropriate amount of liquid is stored in the storage area 24 is hung in a direction in which the hanging hook of a stand (not shown) is inserted into the through hole 48 and the port 16 is on the lower side. .. Then, the liquid material in the storage area 24 flows out from the port portion 16 by gravity and is injected into the patient's body through the external tube 14.

In the present embodiment, the case where the opening 12 is opened and the liquid is poured before the enteral nutrition bag 10 is hung on the hanging hook of the stand has been described. In a state where the bag 10 is suspended, an opening operation force may be applied to open the opening portion 12, and the liquid material may be poured into the suspended enteral nutrition bag 10. In this case, instead of inserting the thumb 54 into the through hole 48, by attaching the thumb 54 to the suspension hook, an opening operation force is exerted between the suspension hook applied to the thumb 54 and the index finger 56 and the middle finger 58. Can be affected. According to this, since the enteral nutrition bag 10 is supported by the stand in advance, the increase in weight of the enteral nutrition bag 10 due to the injection of the liquid material is unlikely to be a problem.

As described above, according to the enteral feeding bag 10, the elastic member 46 is attached to the opening portion 12, so that the opening operation force is applied inward in the width direction substantially orthogonal to the opening direction of the opening portion 12. Thus, the elastic member 46 can be bent and deformed in the opening direction of the opening portion 12. Therefore, the opening portion 12 can be opened by a simple operation in which the opening portion 12 is deformed so as to be crushed in the width direction between the thumb 54 and the index finger 56 and the middle finger 58.

The enteral nutrition bag 10 according to the present invention, which exerts an opening operation force by moving a finger in a bending direction, has an opening operation force that is different from the structure of Patent Document 1 in which an opening operation force is exerted by moving a finger in an extension direction. It becomes possible to efficiently apply the operating force by a more natural motion. Therefore, as compared with the conventional structure disclosed in Patent Document 1, it is possible to exert a larger opening operation force and it becomes easier to adjust the opening operation force with higher accuracy.

Moreover, the operator who pours the liquid into the enteral nutrition bag 10 can easily and stably realize the opening deformation of the opening 12 by exerting the opening operation force on the opening 12 from the outside. Therefore, it is not necessary for the worker to touch the inner surfaces of the outer sheets 18 and 18 and the inner sheets 38 and 38 that can come into contact with the liquid material, and the contamination of the liquid material can be avoided.

Further, it is easy to hold the opening 12 in the open state by continuously applying the opening operation force to the elastic member 46. The enteral nutrition bag 10 can be grasped with one hand, and the grasping hand can exert an opening operation force to open the opening portion 12, and by continuously exerting the opening operation force, The open state of the enteral nutrition bag 10 can be maintained. Therefore, the liquid material can be injected into the accommodation area 24 with the other hand. Therefore, even if only one worker is required to put the liquid material into the storage area 24, the work can be performed with sufficiently high accuracy and high efficiency.

Further, the elastic member 46 can be easily attached to the outer sheets 18, 18 of the opening 12 by inserting the elastic member 46 into the bag-shaped portion 40 from the inlet 42.

Further, the inner sheet 38 forming a part of the peripheral wall portion of the bag-shaped portion 40 extends outward in the width direction more than the outer sheet 18 forming another portion of the peripheral wall portion of the bag-shaped portion 40, and A guide surface 44 leading to the entrance 42 is formed. Then, by sliding the elastic member 46 in contact with the guide surface 44 of the inner sheet 38, the elastic member 46 is guided to the inlet 42 along the inner sheet 38. This facilitates the work of inserting the elastic member 46 into the bag-shaped portion 40 from the inlet 42. The elastic member 46 can be guided to the guide surface 44 along the outer surface of the portion of the outer sheet 18 which is located closer to the open end 32 side in the width direction than the guide surface 44.

Further, a closed end 30 is provided at one end of the pair of flap-shaped portions 28, 28 and an open end 32 is provided at the other end thereof, and the pair of flap-shaped portions 28, 28 are separated from the open end 32 side. Since the opening portion 12 is widened by opening the opening portion 12, the opening portion 12 can be widened as compared with the case where both ends of the flap-shaped portions 28, 28 are sealed. Thereby, the worker who injects the liquid material into the storage area 24 can easily perform the work, and the mental and labor burden on the worker can be reduced.

In particular, in the present embodiment, the edge portions of the pair of flap-shaped portions 28, 28 on the closed end 30 side are the inclined guide portions 34, and the opening portions when the pair of flap-shaped portions 28, 28 are expanded. The opening area of 12 is gradually increased toward the upper end side into which the liquid material is poured. As a result, the liquid material inlet to the accommodation area 24 is enlarged, and the liquid material can be easily poured into the accommodation area 24 without squeezing.

By the way, the specific structure of the acting member is not limitedly interpreted by the exemplification of the first embodiment. Below, some examples of the action member of another structure are shown. In the following description, members and parts that are substantially the same as those in the other embodiments are denoted by the same reference numerals in the drawings, and the description thereof will be omitted.

FIG. 5 shows a main part of an enteral nutrition bag 60 according to a second embodiment of the present invention. The enteral nutrition bag 60 has a structure in which an elastic member 62 as an acting member is inserted into the bag-shaped portion 40. The elastic member 62 has a curved plate shape whose inclination angle changes in the vertical direction (vertical direction in FIG. 5) and extends in the width direction of the outer sheets 18, 18 (direction orthogonal to the paper surface in FIG. 5). .. The elastic member 62 is arranged so as to be convex toward the outer surface side of the outer sheets 18, 18 (left and right outer sides in FIG. 5) when inserted into the bag-shaped portion 40. In FIG. 5, the thickness of each member is exaggerated and the curvature of the elastic member 62 is shown to be large for easy understanding.

According to the elastic member 62 of the enteral nutrition bag 60 having the structure according to the present embodiment, when the compressive force acting in the width direction of the outer sheet 18 is input as the opening operation force, the elastic member at the intermediate portion. 62 is elastically deformed so as to be bent, so that the opening portion 12 of the enteral nutrition bag 60 is deformed in the opening direction. As a result, the enteral nutrition bag 60 can easily open the opening 12 as in the enteral nutrition bag 10 of the first embodiment, and stably maintains the open state of the opening 12. be able to.

In particular, since the elastic member 62 of the present embodiment has a curved cross-sectional shape that is convex toward the opening direction of the opening portion 12 (the outer left and right direction in FIG. 5), the elastic member 62 is the same as that of the outer sheet 18. When compressed by the opening operation force acting in the width direction, the deformation direction is guided in the opening direction of the opening portion 12 based on the sectional shape. In short, in the present embodiment, the deformation assisting mechanism that assists the deformation of the opening portion 12 of the elastic member 62 in the opening direction has a curved cross-sectional shape in which the elastic member 62 is convex on the outer surface side of the outer sheet 18, It is configured to have a shape extending in the width direction. Therefore, the opening portion 12 is prevented from being deformed in an unintended direction or distorted, and the opening portion 12 can be stably opened.

Further, the elastic member 62 has a curved cross-sectional shape, and thus has a higher deformation rigidity than the flat plate shape. Therefore, although it has sufficient shape stability and resistance force associated therewith until it starts to bend, the deformation rigidity of the elastic member is adjusted by the sectional shape of the elastic member to adjust the ease of opening the opening portion 12. You can also The elastic member 62 can be easily bent at the intermediate portion by partially reducing the vertical length in the intermediate portion or forming a lightening hole in the intermediate portion. The opening operation force required until the member 62 starts to bend can be set to be small.

Moreover, when the opening operation force is applied, in addition to the bending at the intermediate portion that opens the opening portion 12, a change in the cross-sectional shape occurs at the bending portion. More specifically, the cross-sectional shape of the elastic member 62 changes so that the curvature becomes small at the bent portion. As a result, when the elastic member 62 is deformed by a sufficiently large opening operation force, the rigidity of the elastic member 62 in the deformed portion becomes small due to the change in cross-sectional shape. As a result, the deformed state of the elastic member 62 can be maintained with a force smaller than the force required to open the opening portion 12, and the opening state of the opening portion 12 can be stably maintained.

FIG. 6 shows an elastic member 70 as an operating member that constitutes an enteral nutrition bag according to the third embodiment of the present invention. The elastic member 70 is a continuous structure in which a pair of insertion pieces 72, 72 attached to outer sheets (described later) on both front and back sides are connected to each other by a folded portion 74.

The insertion piece 72 is a portion attached to the outer sheet by being inserted into a bag-shaped portion (described later), and has a substantially flat plate shape in the present embodiment. The insertion piece 72 may have a curved plate shape like the elastic member 46 of the first embodiment, or may have a plate shape extending with a curved cross section like the elastic member 62 of the second embodiment. ..

The folded-back portion 74 has a substantially semi-cylindrical shape, and both end portions are connected to the base end portions of the pair of insertion pieces 72, 72. Since the folded portion 74 is elastically deformable in the thickness direction, the elastic member 70 can change the relative inclination angle of the pair of insertion pieces 72, 72 by the elastic deformation of the folded portion 74. It is possible. In the initial shape of the elastic member 70 where no external force acts, the pair of insertion pieces 72, 72 are preferably separated from each other at the ends on the opposite side to the folded-back portion 74. More preferably, in the initial shape, the pair of insertion pieces 72 and 72 are entirely separated from each other and face each other. The ends of the pair of insertion pieces 72, 72 on the side opposite to the folded-back portion 74 may be in contact with each other in the initial shape, and may be separated from each other by insertion into a bag-shaped portion described later.

For example, by processing a long flat plate so as to be folded back in the thickness direction in a part of the length direction, the elastic member 70 integrally including the pair of insertion pieces 72, 72 and the folding portion 74 can be obtained. .. However, the elastic member 70 may be obtained by forming the pair of insertion pieces 72, 72 and the folded-back portion 74 separately and combining them.

Then, the elastic member 70 is inserted into the bag-shaped portions 40, 40 of the enteral nutrition bag 80 shown in FIG. 7 or the enteral nutrition bag 90 shown in FIG. The insertion pieces 72, 72 are arranged so as to extend in the width direction of the outer sheets 18, 18, and are attached to the outer sheets 18, 18 on the front and back sides.

Since the elastic member 70 has the pair of insertion pieces 72, 72 connected to each other, the work may become difficult if the pair of insertion pieces 72, 72 are inserted at the same time. Therefore, in the bag-shaped portions 40, 40 of the enteral nutrition bag 80 shown in FIG. 7, the front inlet 42a and the rear inlet 42b are provided at positions displaced from each other in the inserting direction of the elastic member 70. That is, the distance L1 from the edge of the outer sheet 18 to the front inlet 42a shown in FIG. 7A and the distance from the edge of the outer sheet 18 to the rear inlet 42b shown in FIG. 7B. The distances L2 are different from each other, and in this embodiment, L1<L2.

With this, after inserting one insertion piece 72 of the elastic member 70 into the front side inlet 42a, the other insertion piece 72 can be inserted into the rear side inlet 42b. Therefore, it becomes easy to insert the pair of insertion pieces 72, 72 into the bag-shaped portions 40, 40 on the front and back sides, and the work of attaching the elastic member 70 to the outer sheets 18, 18 is facilitated.

If the elastic member 70 having such a structure is adopted, the opening operation force input to the folding portion 74 acts as a moment on the pair of insertion pieces 72, 72, so that the pair of insertion pieces 72, 72 respectively. It deforms so as to be convex toward the outer surface side of the outer sheet 18. As a result, the opening 12 is opened. As described above, in the deformation assisting mechanism of the present embodiment, the elastic member 70 has a structure in which the pair of insertion pieces 72, 72 are continuous by the folding part 74, and the elastic member 70 is folded back at one end. It is configured by being a structure.

In FIG. 7, the folded-back portion 74 of the elastic member 70 is arranged so as to be exposed from the bag-shaped portions 40, 40 and visible from the outside for the sake of easy understanding, but it is difficult to see the elastic member 70 from the outside. It may be provided in. According to this, substantially the entire externally visible portion can be configured by the outer sheets 18 and 18, and the enteral nutrition bag 80 can be made to look good. For example, by forming the inlets 42a and 42b of the elastic member 70 not on the outer sheets 18 and 18 but on an inner sheet (not shown) that is superposed on the inner surface side of the outer sheets 18 and 18, the elastic member 70 can be seen from the outside. It is possible to make it difficult.

Note that, for example, even if the distance from the edge of the outer sheet 18 to the front inlet 42a and the distance from the edge of the outer sheet 18 to the rear inlet 42b are the same, one of the elastic members 70 By making the lengths of the insertion piece 72 and the other insertion piece 72 different from each other, the pair of insertion pieces 72, 72 can be sequentially inserted into the front and back inlets 42a, 42b.

Further, if the structure shown in FIG. 8 is adopted, it becomes easy to insert the pair of insertion pieces 72, 72 of the elastic member 70 into the front and back inlets 42a, 42b at the same time.

That is, in the enteral nutrition bag 90 shown in FIG. 8A, the front inlet 92a is formed in the front outer sheet 18a, and the back inlet 92b is not the back outer sheet 18b, It is formed on the inner sheet 38b on the back side which is fixed to the outer sheet 18b on the back side. As a result, both the front side inlet 92a and the back side inlet 92b are open to the front side surface (the lower side in FIG. 8) of the enteral nutrition bag 90.

Further, in the peripheral wall portion of the bag-shaped portion 40, the front inner sheet 38a extends to the open end 32 side (right side in FIG. 8) from the inlet 92a of the front outer sheet 18a, and the front inner sheet 38a The first guide surface 94 is formed by the portion on the open end 32 side of the front-side inlet 92a. Further, in the peripheral wall portion of the bag-shaped portion 40, the back side outer sheet 18b extends to the open end 32 side (the right side in FIG. 8) beyond the inlet 92b of the back side inner sheet 38b, and the back side outer sheet 18b The second guide surface 96 is formed by the portion on the open end 32 side of the back inlet 92b.

Then, when inserting the pair of insertion pieces 72, 72 of the elastic member 70 into the front and back inlets 92a, 92b, as shown in FIG. 8B, one insertion piece 72 is pressed against the first guide surface 94. However, the other insertion piece 72 can be pressed against the second guide surface 96. As a result, one insertion piece 72 is inserted along the first guide surface 94 into the front side inlet 92a, while the other insertion piece 72 is inserted along the second guide surface 96 into the back side inlet 92b. be able to.

A first insertion assisting surface 98 is formed on the open end 32 side of the first and second guide surfaces 94 and 96 by the outer surface (the lower surface in FIG. 8) of the front outer sheet 18a, and at the back side. The inner surface of the inner sheet 38b (the lower surface in FIG. 8) constitutes a second insertion assisting surface 99. Then, one insertion piece 72 of the elastic member 70 slides while being in contact with the first insertion auxiliary surface 98, so that the insertion piece 72 is guided to the first guide surface 94 and the other insertion piece 72 of the elastic member 70 moves to the second insertion piece 72. By sliding while contacting the insertion assisting surface 99, the insertion assisting surface 99 is guided to the second guide surface 96. This makes it easier to insert the pair of insertion pieces 72, 72 of the elastic member 70 into the inlets 92a, 92b.

Further, like the elastic member 100 as the acting member shown in FIG. 9, the outer surface of the folded portion 102 can be used as the pressing surface 104 as the acting surface to which the opening operation force is input. Similar to the elastic member 70, the elastic member 100 includes a pair of insertion pieces 72, 72 and a folded portion 102 that connects the pair of insertion pieces 72, 72 to each other at one end, and is partially It is a folded tong-shaped continuous structure. A fold line 106 is formed at the connecting portion between the pair of insertion pieces 72, 72 and the folded portion 102. The polygonal line 106 is not necessarily limited to a corner-shaped refraction ridge line, but may be a bending ridge line.

The folded portion 102 of the elastic member 100 has a flat plate shape or a curved cross-sectional shape that is concave toward the outside. As a result, the folding portion 102 is provided with the flat or concave pressing surface 104 on the side opposite to the extending direction of the pair of insertion pieces 72, 72. By providing the pressing surface 104 on the folded portion 102 in this way, when the opening operation force is applied to the elastic member 100 with the fingers, the opening operation force is stably applied by pressing the surface (the pressing surface 104) with the fingers. be able to.

In the elastic member 100 of FIG. 9, the pair of insertion pieces 72, 72 have a curved cross-sectional shape that is convex toward the outside, and the pressing surface 104 of the folded portion 102 has a concave curved cross-sectional shape. ing. In short, in the elastic member 100 of this embodiment, the pressing surface 104, which is the outer surface of the folded portion 102, has a curved cross-sectional shape that is opposite to the surface of the pair of insertion pieces 72, 72 in the thickness direction. In this way, the pair of insertion pieces 72, 72 and the folded-back portion 102 each have a curved cross-sectional shape, and the bending directions of the pair of insertion pieces 72, 72 and the folded-back portion 102 are opposite to each other. Therefore, when the opening operation force is input, the pair of insertion pieces 72, 72 are easily deformed so as to be convex outward in the thickness direction. Therefore, it is possible to realize the stabilization of the deformation mode of the pair of insertion pieces 72, 72, and the securing of the deformation rigidity of the folded portion 102 against the action of the opening operation force.

FIG. 10 shows an elastic member 110 as an operating member that constitutes an enteral nutrition bag according to the fourth embodiment of the present invention. In the elastic member 110 of the present embodiment, at least one end portion in the width direction of the outer sheet of the enteral nutrition bag (not shown) has an upper inclined portion 114 that inclines outward toward the upper side and an outward inclination toward the downward direction. It has a constricted portion 118 with a downward sloping portion 116. In particular, it is desirable that the upper inclined portion 114 be longer than the lower inclined portion 116 in the vertical direction.

More specifically, each of the insert pieces 112 of the elastic member 110 is formed into a long plate shape, and the insert piece 112 in the width direction of the enteral nutrition bag in the width direction of the enteral nutrition bag when accommodated in a bag-shaped portion (not shown) is in the longitudinal direction. Both edges are constricted. The end of the insertion piece 112 in the lengthwise direction is such that the upper part is an upper inclined part 114 that inclines upward in the lengthwise direction, while the lower part is downward in the lengthwise direction. It is a lower inclined portion 116 that inclines to. As a result, a constricted portion 118 is formed at the end of the insertion piece 112 in the lengthwise direction, in which the connecting portion of the vertically inclined portions 114 and 116, which is located lower than the center in the vertical direction, is most recessed.

Then, in the elastic member 110, the pair of insertion pieces 112, 112 are inserted into a bag-shaped portion of an enteral nutrition bag (not shown) as shown in the third embodiment (see FIG. 7). An operator, who is a user, applies an opening operation force acting on the compression side in the length direction of the insertion piece 112 to the pair of insertion pieces 112, 112 inserted in the bag-shaped portion, thereby inserting the pair of insertion pieces. When the pieces 112 and 112 are deformed so as to bend outward in the thickness direction and are separated from each other in the stacking direction, the opening portion of the enteral nutrition bag is expanded in the opening direction by the pair of insertion pieces 112 and 112.

Here, the index finger, the middle finger, or the thumb of the operator who opens the enteral nutrition bag is pressed against the constricted portions 118 provided at both ends in the length direction of the pair of insertion pieces 112, 112. Since the length dimension of the insert pieces 112, 112 to which the gripping force of the fingers in the bag width direction is exerted is lengthened upward by the upper inclined portion 114, the arc length at the time of bending deformation is lengthened upward. Become. As a result, the opening portion of the nutrition bag is tapered so that the opening area increases upward, and the opening portion of the bag can be easily opened larger. Since the downward movement of the fingertip due to the inclination of the upper inclined portion 114 is also suppressed by the lower inclined portion 116, the pressing of the fingertip from the edge of the elastic member 110 is prevented from coming off. Further, even if the weight of the bag is increased due to the filling of the nutritional supplement or the like, the upper inclined portion 114 is easily caught by the fingers to support the bag.

In the present embodiment, the upper sloping portion 114 and the lower sloping portion 116 each have a linearly sloping shape. Further, the length of each of the upper inclined portion 114 and the lower inclined portion 116, the relative length ratio, and the like are not limited. The lower sloping portion 116 may not be provided, and instead of the lower sloping portion 116, a protrusion may be provided at the lower end of the upper sloping portion 114. Further, for example, in order to prevent the ends of the upper sloping portion 114 and the lower sloping portion 116 from sharply sharpening, the corners may be curved.

FIG. 11 shows an elastic member 120 as an operating member that constitutes an enteral nutrition bag 132 (described later) according to the fifth embodiment of the present invention. The elastic member 120 of the present embodiment includes a folded-back portion 124 that connects the pair of insertion pieces 122, 122 at one end side, and the folded-back portion 124 is widened upward to form the pair of insertion pieces 122, 122. The both edges of which the is extended are inclined sides. Note that, in FIG. 11, the folded-back portion 124 has a substantially isosceles trapezoidal flat plate shape that is turned upside down. Alternatively, the folded portion 124 may have a triangular shape.

More specifically, the folded-back portion 124 in the present embodiment is a substantially isosceles trapezoid in the reverse direction in which the upper side 126 is longer than the lower side 128, and the folded opposite side 130, 130 on both sides in the width direction of the folded-back portion 124 has , A pair of insertion pieces 122, 122 extend substantially at right angles. The pair of insertion pieces 122, 122 are inclined at least at the base end side where the folded-back portion 124 is located so as to expand toward each other upward toward the opening of the enteral nutrition bag 132. Each insertion piece 122 may have a twisted shape at the central portion in the longitudinal direction, and the tip portions may overlap each other in parallel, whereby the tip of the insertion piece 122 may be placed in a bag described later in the enteral feeding bag. It can be easily inserted into the shaped portion 40.

The elastic member 120 is inserted into the bag-shaped portion 40 of the enteral nutrition bag 132 as shown in FIG. The bag-shaped portion 40 is provided at a position near and above the chuck-shaped sealing portion 26 so that an opening operation force (described later) exerted on the chuck-shaped sealing portion 26 can be effectively transmitted to the bag-shaped portion 40. It has become. The enteral nutrition bag 132 of the present embodiment does not include the through hole 48 of the above embodiment, but the through hole 48 similar to that of the above embodiment may be appropriately provided.

In the enteral nutrition bag 132, a step portion 134 is formed on one side in the width direction of the zipper-shaped sealing portion 26, and the lower side of the step portion 134 projects outward in the bag width direction compared to the upper side. The enteral nutrition bag 132 has a constricted portion 136 formed on the other side in the width direction of the zipper-shaped sealing portion 26. The constricted portion 136 is shaped to be concave outward in the width direction, a hook portion 138 protruding outward in the width direction is provided on the upper side of the constricted portion 136, and the constricted portion 136 protrudes outward in the width direction downward. A supporting portion 140 is provided. In the following description, the welded regions of the outer sheet and the inner sheet are shown in gray for easy understanding. Further, the welded areas of the outer sheets were colored with a lighter gray than the welded areas of the outer sheet and the inner sheet. Further, the hidden line of the structure is shown by a thick broken line, and the welding region is shown by a thin broken line.

In the present embodiment, the folded-back portion 124 of the elastic member 120 is located on the open end 32 side of the pair of flap-shaped portions 28, 28, and is free on the side opposite to the folded-back portion 124 of the pair of insertion pieces 122, 122. The ends are located on the closed end 30 side of the pair of flap-shaped portions 28, 28.

Then, as shown in FIG. 13, the operator applies the thumb 54 to one end of the chuck-shaped sealing portion 26 in the width direction, and applies the index finger 56 to the other end of the chuck-shaped sealing portion 26 in the width direction. Then, the opening operation force is input between the thumb 54 and the index finger 56. The opening operation force input to the portion reinforced by the chuck-shaped sealing portion 26 is transmitted to the elastic member 120 via the inner peripheral surface of the bag-shaped portion, and the elastic member 120 moves toward the opening side in the thickness direction. Bend to be convex. Thereby, as shown in FIG. 14, the opening portion 12 of the enteral nutrition bag 132 is spread by the elastic member 120. The opening operation force may be input by placing one finger on the zipper-shaped sealing portion 26 and the other finger on the elastic member 120.

In the elastic member 120, since the folded-back portion 124 has a plate shape, the folded-back portion 124 is bent and deformed by the action of the opening operation force, so that the pair of insertion pieces 122, 122 is connected to the folded-back portion 124. The end portion comes to extend in the opening direction. Therefore, the opening portion 12 can be efficiently and largely opened by the opening operation force.

Since the folded-back portion 124 has a trapezoidal plate shape and the pair of insertion pieces 122, 122 extending from the folded-back portion 124 are inclined upward in the opening direction, the insertion pieces 122, 122 are respectively formed in the thickness direction. When it is flexibly deformed, the opening shape of the opening portion 12 becomes a funnel-shaped taper shape that widens upward. As a result, a large opening area is secured at the upper end portion of the opening portion 12, and it becomes easy to put a nutrient or the like into the enteral feeding bag 132 through the opening portion 12.

Further, since the step portion 134 is formed on one side in the width direction of the chuck-shaped sealing portion 26, the position of the thumb 54 can be easily guided to an appropriate position by the step portion 134, and the opening operating force by the thumb 54 can be increased. Can be induced to be added in place.

Further, a constricted portion 136 is provided on one side in the width direction of the chuck-shaped sealing portion 26, and the width dimension of the enteral nutrition bag 132 is reduced in the constricted portion 136. This allows the operator to intuitively grasp the position to be held when opening the enteral nutrition bag 132 from the shape. Even if the enteral nutrition bag 132 is in a heavy state filled with nutrients by the hooking portion 138 provided on the upper side of the constriction portion 136, the hooking portion 138 is caught on the finger from above, and the grip force is relatively small. Can also support the enteral nutrition bag 132. In particular, when the enteral nutrition bag 132 is deformed by exerting an opening operation force on the zipper-shaped sealing portion 26, the insertion pieces 122, 122 of the elastic member 120 are located above the index finger 56, and thus the insertion piece 122 is located. , 122 are hooked on the index finger 56, the weight sharing of the enteral nutrition bag 132 is more effectively realized. The support portion 140 provided below the constricted portion 136 facilitates positioning of the index finger 56 at an appropriate position with respect to the enteral nutrition bag 132. Therefore, the opening operation force exerted on the enteral feeding bag 132 from the index finger 56 can be applied to an appropriate position of the enteral feeding bag 132.

Further, since the end of the elastic member 120 on the side of the folded-back portion 124 projects from the bag-shaped portion 40, the weight of the enteral nutrition bag 132 is shared and supported even when the elastic member 120 is caught by the thumb 54. Therefore, even an operator having a small grip strength can stably support the enteral nutrition bag 132.

In the present embodiment, the folded portion 124 of the elastic member 120 is located on the open end 32 side of the pair of flap-shaped portions 28, 28, and the folded portion 124 of the insertion piece 122 that is the free end of the elastic member 120. The ends on the opposite side are located on the closed end 30 side of the pair of flap-shaped portions 28, 28. In addition, the closed end 30 spreads outward in the bag width direction. As a result, in the open state shown in FIG. 14, one end in the bag width direction is widened upward at the open end 32, and the other end in the bag width direction is widened upward at the inclined closed end 30. As a result, the opening portion 12 as a whole can be expanded more upward in a funnel shape. Moreover, since the folded-back portion 124 of the elastic member 120 is arranged so as to cover the opened open portion on the side of the open end 32, the fingers that are located outside or below the open end 32 and exert an operating force. It is also possible to prevent the injected drug solution and the like from directly falling. However, the folded-back portion 124 of the elastic member 120 may be arranged on the closed end 30 side of the pair of flap-shaped portions 28, 28, and the free end of the elastic member 120 may be arranged on the open end 32 side. According to this, when the opening portion 12 is opened, the open ends 32 of the pair of flap-shaped portions 28, 28 can be displaced so as to separate from each other. Thereby, the opening area of the opening portion 12 can be increased. Both ends in the width direction of the pair of flap-shaped portions 28, 28 may be open ends 32.

Moreover, by positioning the free end of the elastic member 120 on the open end 32 side of the pair of flap-shaped portions 28, 28, when the opening portion 12 is opened, the length separated from the free end of the insertion piece 122 in the longitudinal direction. The moment increases in the central portion of the vertical direction, making it easier to bend. Therefore, a convex curve tends to occur in the vicinity of the center in the bag width direction, and as a result, the bag opening portion 12 spreads in a substantially pentagonal shape in combination with the expansion of the open end 32. A large area can be secured.

FIG. 15 shows an enteral nutrition bag 150 according to the sixth embodiment of the present invention. In the enteral feeding bag 150, the inner sheet 38 is fixed to the pair of flap-shaped portions 28, 28 of the outer sheets 18, 18, and the bag-shaped portion 40 formed between the outer sheet 18 and the inner sheet 38 has an elastic member. 70 has a structure in which it is inserted. In the following description, the welding region between the inner sheets is colored with a gray color that is thinner than the welding region between the outer sheet and the inner sheet and darker than the welding region between the outer sheets. Further, the portions where the four sheets, the outer sheets on the front and back sides and the inner sheets on the front and back sides, are welded are shown in a darker gray color than the other welding regions.

The enteral nutrition bag of the present embodiment has a step of stacking the front and back inner sheets 38, 38, a step of stacking the elastic members 70 on the outer surfaces of the front and back inner sheets 38, 38, and a front and back inner sheet 38. , 38 and the outer sheets 18 on the front and back are overlapped and fixed to each other to form the bag-shaped portion 40 in which the elastic member 70 is arranged between the inner sheet 38 and the outer sheet 18. be able to.

That is, as shown in FIG. 16, elongated rectangular thin film-shaped inner sheets 38, 38 are superposed on each other in the thickness direction. The inner sheets 38, 38 may be fixed to each other at both ends in the width direction of the opening portion 12, or may be overlapped with each other in an independent state.

Next, the pair of insertion pieces 72, 72 of the elastic member 70 are arranged on the outer surface of the inner sheets 38, 38 that are overlapped. In FIG. 16, an elastic member 70 having a structure in which a pair of insertion pieces 72, 72 are connected to each other by a folded portion 74 is illustrated, but one insertion piece 72 such as the elastic member 46 of the first embodiment is used. Corresponding plate-type elastic members can also be used.

Next, the outer sheets 18, 18 are superposed on the inner sheets 38, 38 so that the inner sheets 38, 38 are sandwiched from both sides of the front and back, and the outer peripheral portion of the inner sheet 38 on the front side becomes the outer sheet 18 on the front side. While welding, the outer peripheral portion of the inner sheet 38 on the back side is welded to the outer sheet 18 on the back side. Thus, the bag-shaped portions 40, 40 are formed between the inner sheets 38, 38 and the outer sheets 18, 18 with the pair of insertion pieces 72, 72 of the elastic member 70 inserted (see FIG. 15 ).

Further, the front and back outer sheets 18, 18 are welded to each other to form a bag body 22 shown in FIG. Thereby, the enteral nutrition bag 150 in which the elastic member 70 is attached to the opening portion 12 of the bag body 22 is obtained.

By adopting such a manufacturing method, the work of inserting the insertion piece 72 of the elastic member 70 into the preformed bag-shaped portion 40 becomes unnecessary, and the manufacturing becomes easy. Even when the bag-shaped portion 40 is in the sealed state, the elastic member 70 can be arranged in the bag-shaped portion 40 in a housed state.

In the sixth embodiment, the front and back inner sheets 38, 38 are elongated rectangular sheets, and the front and back outer sheets 18, 18 are configured to form the bag body 22, but, for example, FIG. Even with a structure in which the inner and outer sheets 162 and 162 form the bag body 22 as in the enteral nutrition bag 160 shown in FIG. 6, the manufacturing method similar to that of the sixth embodiment can be applied. Note that, in FIG. 17, the portions where the four sheets of the outer sheets 164 and 164 and the inner sheets 162 and 162 are welded are shown in a darker gray color than the other welding regions.

That is, in the enteral nutrition bag 160 according to the seventh embodiment of the present invention, the step of forming the bag body 22 by stacking the inner sheets 162 and 162 on the front and back and fixing them to each other, and the opening of the bag body 22. The step of superposing the elastic member 70 on the outer surface of the inner sheets 162, 162 in the portion 12, and the outer sheets 164, 164 superposed so as to cover the superposed portions of the inner sheet 162, 162 and the elastic member 70. And a step of forming the bag-shaped portions 40, 40 in which the elastic member 70 is accommodated by being fixed to 162, 162.

More specifically, as shown in FIGS. 17 and 18, the front and back inner sheets 162 and 162 of the present embodiment substantially correspond to the outer sheets 18 and 18 of the first embodiment. By welding the outer peripheral portions of the front and back inner sheets 162, 162 to each other, the bag body 22 having the opening portion 12 on the upper side is formed.

Next, the pair of insertion pieces 72, 72 of the elastic member 70 are superposed on the opening portion 12 of the bag body 22. Also in this embodiment, the elastic member 70 is not necessarily limited to the integral structure including the folded-back portion 74.

Next, the outer sheets 164 and 164, which are long and narrow rectangular sheets, are superposed from the front and back sides so as to sandwich the bag body 22 and the elastic member 70. Then, by welding the outer peripheral portions of the outer sheets 164 and 164 to the inner sheets 162 and 162, the bag-shaped portion 40 in which the elastic member 70 is inserted is provided between the inner sheet 162 and the outer sheet 164 fixed to each other. Form each. With this configuration, it is difficult to expose the elastic member 70 to the outside, and it is possible to prevent the elastic member 70 from coming off during transportation. Before the elastic member 70 is assembled, the inner sheet and the outer sheet are partially fixed, and the inner sheet and the outer sheet are fixed in a state where the fixed portion and the elastic member 70 are brought into contact with each other to position the elastic member 70. You may form the accommodating part (bag-shaped part) which accommodates.

In the present embodiment, the outer sheets 164 and 164 extend to the outside of the inner sheets 162 and 162 on one widthwise side of the inner sheets 162 and 162 (left side in FIG. 17). Then, the ends of the outer sheets 164 and 164 extending to the position where the inner sheets 162 and 162 are separated are welded to each other. As a result, the bag-shaped portion 40 is formed in a substantially sealed state, and the elastic member 70 is housed in the bag-shaped portion 40 without being exposed to the outside.

In this way, also in the enteral nutrition bag 160 having the structure in which the bag body 22 is constituted by the inner sheets 162 and 162, the elastic member 70 can be arranged in an inserted state in advance when the bag-shaped portion 40 is formed. Further, the elastic member 70 can be housed in the internal space of the bag-shaped portion 40 that is separated from the outside.

FIG. 19 shows an enteral nutrition bag 170 according to the eighth embodiment of the present invention. The enteral nutrition bag 170 has a structure in which elastic members 172 are fixed to the pair of flap-shaped portions 28, 28 of the outer sheets 18, 18 as acting members. In the following description, the welded areas of the outer sheets 18, 18 are colored gray.

The elastic member 172 is an elongated plate-shaped member made of resin, metal, or the like, and can be flexibly deformed in the thickness direction. As shown in FIG. 20, the elastic members 172 are fixed to the outer surfaces 173 of the outer sheets 18 and 18, respectively. The method of fixing the elastic member 172 to the outer sheet 18 is not particularly limited, and it is possible to adhere the elastic member 172 to the outer sheet 18, for example, using an adhesive. However, in the present embodiment, the elastic member 172 is formed of a thermoplastic resin, It is fixed to the outer sheet 18 by welding.

As shown in FIG. 19, the elastic member 172 extends linearly in the width direction of the outer sheet 18 and is arranged at a position closer to the opening end 174 of the opening portion 12 than the chuck-shaped sealing portion 26. The open end 174 is the upper end of the open portion 12 and is constituted by the uppermost ends of the outer sheets 18, 18.

The inclined guide portion 34 of the closed end 30 is provided on the outer side in the width direction of the outer sheet 18 with respect to the elastic member 172 (left side in FIG. 19). In the present embodiment, one end of the elastic member 172 is located in the tilt guide portion 34 and has an inclined shape. The elastic member 172 extends from the inclined guide portion 34 in the width direction of the outer sheet 18. One end of the elastic member 172 may be located on the tilt guide portion 34, or may be located away from the tilt guide portion 34 in the width direction.

The other end of the outer sheet 18 in the width direction is provided with an open end 32 on the side closer to the open end 174 than the chuck-shaped sealing portion 26. The other end of the elastic member 172 is located at the open end 32. It should be noted that both sides in the width direction of the chuck-shaped sealing portion 26 arranged at a position farther from the open end 174 than the open end 32 are fixed portions 20. Therefore, both ends of the chuck-shaped sealing portion 26 are limited in deformation in the opening direction.

According to the enteral nutrition bag 170 having the structure according to the present embodiment, by applying a force to the elastic member 172 in the width direction of the outer sheets 18, 18, the opening portion 12 of the accommodation area 24 can be stably opened. Can be transformed into.

That is, since the elastic member 172 is fixed to the position where the inclined guide portion 34 is provided in the vertical direction, the elastic member 172 is guided to be deformed in the direction in which the opening end 174 of the opening portion 12 is opened, and the opening portion is opened. It is easy to open 12 in a funnel shape. That is, in addition to the force in the width direction of the outer sheet 18, a force toward the opening end 174 is input to the elastic member 172 as a component force of the opening operation force transmitted from the inclined guide portion 34 of the closed end 30. It As a result, the elastic member 172 is compressed in the width direction of the outer sheet 18 while the end portion on the side of the inclined guide portion 34 is displaced toward the opening end 174 side, causing bending deformation that becomes concave toward the opening end 174. To be done. As a result, the opening portion 12 is guided to be deformed in the opening direction. In addition, since one end of the elastic member 172 has an inclined shape, the outer sheet 18 is guided to be deformed along the inclined shape. In other words, the opening portion 12 increases in opening area toward the opening end 174 by exerting a force from the end of the elastic member 172 to the inclination guiding portion 34 in a direction of expanding the inclination guiding portion 34. Transforms into a shape. In particular, the opening portion 12 is easily deformed into a funnel shape in which the opening area increases toward the opening end 174, and the opened opening portion 12 has a shape in which the liquid material can be easily inserted.

Also, the chuck-shaped sealing portion 26 provided in the opening portion 12 is brought into an open state before exerting an opening operation force on the elastic member 172. That is, for example, the enteral nutrition bag 10 is packaged in the packaging body 175 with the chuck-shaped sealing portion 26 opened in advance. As a result, during use, the front and back sheets 18, 18 in the vicinity of the chuck-shaped sealing portion 26 are located in the opening direction from the closed end 30, and the front and back sheets 18, 18 are easily opened in the opening direction. .. Further, the zipper-shaped sealing portion 26 is brought into a wide open state by pulling the outer sheets 18, 18 apart in the opening direction at the opening portion 12, but the zipper-shaped sealing portion 26 is in an opened state in which the front and back chucks are simply separated. Even at the central sealing portion 26, at the center in the width direction of the outer sheet 18, the front and back surfaces are separated from each other by a distance larger than the both ends, so that the outer sealing sheet 18 has a convex curved shape in the opening direction. As a result, the opening portion 12 has a shape that is easily deformed in the opening direction even when the chuck-shaped sealing portion 26 is simply in the opened state with the chuck separated. Therefore, when an opening operation force is applied to the opening portion 12 with the chuck-shaped sealing portion 26 opened, the elastic member 172 is easily deformed in the opening direction.

In the deformation assisting mechanism of the present embodiment, (i) the elastic member 172 extends from the inclined guide portion 34 of the closed end 30, in other words, the closed end is provided outside the elastic member 172 in the width direction of the outer sheet 18. 30 and/or (ii) the chuck-shaped sealing portion 26 is provided in the opening portion 12.

Since the other end in the width direction of the opening 12 is the open end 32, the opening area of the opening end 174 of the opening 12 can be further increased. In particular, since the other ends of the elastic members 172 and 172 fixed to the outer sheets 18 and 18 are located at the open end 32, the other ends of the elastic members 172 and 172 are separated from each other in the opening direction. It is possible to displace. Therefore, compared with the case where both ends of the elastic members 172 and 172 are restrained by the closed ends 30, the opening area at the opening end 174 of the opening portion 12 can be stably increased.

Note that the elastic member 172 may be curved so as to project in the opening direction of the opening 12 from both ends toward the center in the width direction of the outer sheet 18, like the elastic member 46 of FIGS. According to this, when a force is applied to the elastic member 172 in the width direction of the outer sheet 18, elastic deformation of the elastic member 172 is easily induced in the opening direction of the opening portion 12.

When the elastic member 172 has a curved shape, the elastic member 172 that is curved in advance may be fixed to the outer sheet 18, but the elastic member 172 fixed to the opening 12 of the outer sheet 18 is curved by press working. You can also

Specifically, as shown in FIG. 21, the convex press die 176 is inserted into the opening portion 12 of the enteral nutrition bag 170 in which the elastic members 172 and 172 are fixed to the outer surfaces 173 of the outer sheets 18 and 18. .. Concave press dies 178, 178 are arranged on both sides of the opening 12 in the opening direction at positions corresponding to the inserted convex press 176. Then, the opening portion 12 including the elastic member 172 is pressed between the convex press die 176 and the concave press die 178, 178. As a result, the elastic member 172 provided in the opening 12 is bent into a curved shape corresponding to the pressing surfaces of the convex press die 176 and the concave press die 178, 178 by press working.

Preferably, the convex press die 176 and the concave press die 178, 178 are heated to a predetermined temperature, and the opening portion 12 having the elastic member 172 to be formed is heated during the press working. .. As a result, the elastic member 172 made of thermoplastic resin is pressed and efficiently deformed while being softened by heat. When the elastic member 172 provided in the opening 12 is pressed and then cooled during heating, the elastic member 172 is formed into a convex shape outward in the opening direction. By such a hot pressing process, the elastic member 172 is efficiently formed into a shape that is convex outward in the opening direction of the opening portion 12. However, the hot pressing process of performing the pressing process while heating is not essential, and the elastic member 172 can be made to have a habit only by the pressing process. Since the elastic member 172 provided in the opening portion 12 is bent, the opening portion 12 formed by the outer sheets 18, 18 may be bent together with the elastic member 172.

FIG. 22 shows an enteral nutrition bag 180 as a ninth embodiment of the present invention. The enteral nutrition bag 180 has a structure in which elastic members 182 are fixed to the opening portions 12 of the outer sheets 18 and 18 as acting members.

In the present embodiment, the outer sheets 18, 18 are welded in a bag shape in which the outer peripheral portion is opened only at the upper portion. In short, the enteral nutrition bag 180 has the closed ends 30 and 30 in which both ends in the width direction of the pair of flap-shaped portions 28 and 28 are welded to each other, and the open end 32 is not provided. The opening portions 12 provided in the upper portions of the outer sheets 18 and 18 have the widthwise dimension gradually increasing in the upward direction by forming the inclined guide portions 34 on both sides in the width direction. That is, in the opening portion 12, the lowermost portion of the inclined guide portion 34 is the narrow portion 184 having a reduced width direction dimension, and the portion above the narrow portion 184 is wider than the narrow portion 184. The wide portion 186 has a larger directional dimension.

Then, at the position where the inclined guide portions 34, 34 are displaced downward in the opening portion 12, a chuck-shaped sealing portion 26 is provided extending in the width direction. In the present embodiment, a portion extending vertically is provided below the inclined guide portion 34 with a widthwise dimension substantially equal to that of the narrow portion 184, and the narrow portion 184 has a certain vertical dimension. Has been formed. The narrow sealing portion 184 is provided with the chuck-shaped sealing portion 26. An elastic member 182 is provided on the upper side of the opening portion 12 closer to the opening end 174 of the opening portion 12 than the chuck-shaped sealing portion 26, that is, on the wide portion 186. The elastic member 182 extends in the width direction of the outer sheet 18 between the inclined guide portions 34, 34. Both ends of the elastic member 182 extend to a position close to or reach the inclined guide portions 34, 34. By setting the narrow portion 184 in the opening operation portion, it becomes possible to obtain good opening operability even if the user has a short finger. Further, by providing the wide portion 186 on the opening side of the narrow portion 184, it is possible to secure a good opening operability by the narrow portion 184 and secure a large opening area at the opening end 174. In addition, the operability of filling the enteral nutrition bag 180 with liquid by the user can be improved. Further, the outer side in the width direction of the wide portion 186 is a portion in which the operating force in the opening direction is relatively hard to be transmitted, but since the wide portion 186 is opened in the opening direction in advance, the required operating force can be reduced. Thus, it is possible to open the wide portion 186 large with a small force. The elastic member 182 is preferably curved in the opening direction of the opening 12 in the initial state.

In addition, the width dimension of the accommodation area 24 is narrowed in the upper portion in the vertical direction of the enteral nutrition bag 180, and the chuck-shaped sealing portion 26 is provided in the narrowed neck-shaped portion (opening portion 12). It is provided. A flap-shaped portion 28 having a width dimension wider than that of the neck-shaped portion is provided above the narrowed opening portion 12. The flap-shaped portion 28 has a width larger than that of the chuck-shaped sealing portion 26. An elastic member 182 having a large width dimension (left-right dimension in FIG. 22) is provided.

It is sufficient that the flap-shaped portion 28 is wider than the opening portion 12, and the flap portion 28 is not limited to the inclined guide portion 34 that is linearly inclined upward as shown in the figure, and may be, for example, the opening portion 12 and the flap-shaped portion. At the boundary with 28, the width dimension suddenly widens in a stepped manner, the width dimension spreads in multiple steps in a stepwise manner toward the upper opening end 174, and the inclination angle of the inclination guide portion 34 is curved or bent. It may be a mode that changes with a line. Further, since the slant guide portion 34 is not provided and the closed end portion is L-shaped, the width dimension of the opening end 174 is smaller than that of the opening portion 12 located below the flap portion 28. May be made larger. In particular, in order to open the flap-like portion 28 in a flare shape that greatly expands toward the opening end 174, the flap-like portion 28 has a vertical dimension of 2 cm or more, and the opening end 174 has a widthwise dimension equal to that of the opening portion 12. It is desirable that the width is 2 cm or more larger than the width dimension. Further, it is desirable that both ends of the opening end 174 in the width direction are positioned outward in the width direction of both ends of the opening portion 12 in the width direction. In particular, in the case where the open end 32 is not provided and the side in the width direction is pressed inward to open, the both ends in the width direction of the opening end 174 are positioned more outward in the width direction than the ends in the width direction of the opening portion 12. Is preferred. For example, when the one end of the opening end 174 in the width direction and the one end of the opening portion 12 in the width direction are in the same position in the width direction when the opening 12 is closed, the opening 12 opens. The one end of the opening end 174 in the width direction may be located inside the one end of the opening portion 12 in the width direction, and the opening area of the opening end 174 may be reduced.

Note that in the embodiment shown in FIG. 22, the elastic member 182 is arranged below the center in the vertical direction of the flap-shaped portion 28, but the arrangement position of the elastic member 182 is not limited. It is also possible to dispose the elastic member 182 at a position close to the opening end 174 of the flap-shaped portion 28. Further, a plurality of elastic members may be arranged side by side in the vertical direction of the flap-shaped portion 28, or an elastic member whose thickness dimension and/or vertical dimension changes in the width direction of the outer sheet is adopted. Is also possible.

Further, in the present embodiment, the narrow portion 184 is provided at the upper end portion of the enteral nutrition bag 180, in other words, the widthwise dimension of the fixing portion 20 is increased on both the left and right sides of the narrow portion 184. .. Then, a through hole 48 is provided in a portion of the fixing portion 20 where the dimension in the width direction is increased. That is, a through hole 48 into which a finger is inserted is provided on the outer side of the narrow portion 184 in the width direction, and the width direction both edge portions of the outer sheet 18 are moved toward each other by moving the finger in a direction of approaching each other. Since the opening operation force is exerted by pressing, the through hole 48 constitutes a pressing portion to which the opening operation force is exerted.

According to the enteral nutrition bag 180 having the structure according to the present embodiment, since both ends of the elastic member 182 are located close to the closed portion where the outer sheets 18, 18 are welded to each other, the elastic member The opening shape of the opening portion 12 can be stabilized against the deformation of 182. Further, both ends of the elastic member 182 are located in the inclined guide portions 34, 34 on both sides. As a result, the opening portion 12 opens in a funnel shape so as to secure a larger opening area of the opening end 174, so that the liquid material can be easily poured into the accommodation area 24 through the opening portion 12.

In addition, an operator often holds the neck-shaped opening portion 12 having a reduced width dimension of the accommodation area 24 with one hand, and the external operation force for holding the opening portion 12 in the open state is chuck-shaped sealing. It will be applied to the part 26. In such a situation, even if the width dimension of the flap-shaped portion 28 is widened to the upper side of the opening portion 12 in which the chuck-shaped sealing portion 26 is arranged, the chuck-shaped sealing portion is formed in the flap-shaped portion 28. It is difficult for the opening force exerted on the chuck-shaped sealing portion 26 to be transmitted to a portion that does not vertically overlap 26 (a portion that spreads to both sides in the width direction than the chuck-shaped sealing portion 26). However, in the flap-shaped portion 28 of the present embodiment, the elastic members 182 are positioned such that the both ends extend to a portion that does not overlap the chuck-shaped sealing portion 26 in the vertical direction, so that the flap-shaped portion 28 also opens in that portion. The force can be transmitted, and a larger opening area of the opening end 174 is ensured.

That is, for example, in the case where there is only the chuck-shaped sealing portion 26 provided in the opening portion 12, no matter how wide the flap-shaped portion 28 is provided above, the force exerted by the operator's grasping or the like is transmitted skillfully. Therefore, it is difficult to open only in a tubular shape having substantially the same width as the chuck-shaped sealing portion 26, and it is difficult to open in a funnel shape in which the flap-shaped portion 28 spreads upward. On the other hand, in the flap-shaped portion 28 having the opening end 174 having a longer length in the width direction than the opening portion 12 as in the present embodiment, the elastic member 182 extending in the seat width direction rather than the opening portion 12 is adopted. By this, the operating force exerted on the opening portion 12 in which the chuck-shaped sealing portion 26 is arranged is not limited to the width dimension of the chuck-shaped sealing portion 26, and the pair of elastic members 182 can be used over the entire width dimension. Can be exerted as a force to widen the flap-like portion 28 by separating the outer sheets 18 and 18 from each other. This means that, for example, the opening operation force exerted on the chuck-shaped sealing portion 26 is applied to the elastic member 182 from each one end portion of the chuck-shaped sealing portion 26 to each one end portion of the elastic member 182. It can be understood as a mode in which the power is transmitted so as to linearly spread toward the user. Alternatively, for example, the opening operation force exerted on the chuck-shaped sealing portion 26 is transmitted upward by the width of the chuck-shaped sealing portion 26, but the width of the elastic member 182 is changed by the elastic member 182 that receives the force. It can be understood as a mode in which the opening operation force is applied to a wide region in the width direction by being dispersed over the entire direction. Alternatively, for example, although the opening operation force exerted on the outer sheet 18 is transmitted upward in the width of the opening portion 12, the elastic member 182 that receives the force causes the elastic member 182 to extend over the entire width direction of the elastic member 182. By being dispersed, it can be understood as a mode in which the opening operation force is applied to a wide region in the width direction. Alternatively, for example, it is understood that the opening operation force exerted on the elastic member 182 is distributed over the entire width direction of the elastic member 182, so that the opening operation force is exerted on a wide region in the width direction. Can be done. In any case, since the elastic member 182 is provided above the opening portion 12 having a width in the width direction shorter than that of the opening end 174 and has a width direction dimension larger than that of the opening portion 12, the opening portion is provided. At the opening end 174 of the flap-shaped portion 28 whose width dimension is wider than that of the opening 12, the outer sheets 18 on both side portions in the width direction are guided in the opening direction to open the opening end 174 larger than the opening portion 12. Therefore, the opening can be made so as to spread in a flare shape toward the opening end 174, and the opening area can be made to appear large when viewed from above.

Particularly, when the elastic member 182 has an initial shape curved in the opening direction of the opening portion 12, the elastic member 182 is easily deformed in the opening direction of the opening portion 12 at the time of opening operation, and the opening portion 12 can be largely opened. As a result, the pressing portion (the through hole 48 in the present embodiment) and the chuck-shaped sealing portion 26 provided inside thereof and the elastic member 182 can be provided with a certain distance in the vertical direction, and the elastic member 182 is opened. It can also be provided near the end 174.

Note that, as another exemplary embodiment of the acting member, for example, an elastic member 190 as shown in FIG. 23 can be adopted as the acting member. The elastic member 190 has a substantially rectangular plate shape whose longitudinal direction is the width direction of the sheet (not shown) (left-right direction in FIG. 23). The elastic member 190 has an inner surface 192 that is substantially flat and is fixed to the outer surface of a sheet (not shown), and the outer surface 194 is provided with a plurality of cuts 196.

The cut 196 extends in the vertical direction shown in FIG. In the present embodiment, the cut 196 is continuous over the entire length of the elastic member 190 in the vertical direction. The cut 196 extends linearly. The notch 196 is formed at a depth from the outer surface 194 to the middle of the thickness direction without penetrating the elastic member 190 in the thickness direction. The width dimension of the notch 196 is preferably substantially 0, and the inner surfaces of the notch 196 in the width direction are in close contact with each other in the initial shape of the elastic member 190.

The elastic member 190 having such a structure has a shape in which each notch 196 opens when an opening operation force is applied in the width direction of the sheet, so that the notch 196 is convex toward the outer surface 194, which is the opening direction of the opening. Transforms into. As a result, the opening portion of the sheet to which the elastic member 190 is attached is deformed in the opening direction. The elastic member 190 is guided in the deformation direction with respect to the opening operation force by opening the notch 196, and the notch 196 is provided on the outer surface 194 of the elastic member 190 to configure the deformation assisting mechanism of the present embodiment. ..

Note that the number and arrangement of the cuts 196 are not particularly limited. For example, even if only one cut 196 is formed in the center of the elastic member 190 in the width direction of the sheet, the effect of guiding the deformation direction of the elastic member 190 is exhibited. The cross-sectional shape of the cut 196 is preferably a linear shape in which the widthwise inner surfaces of the cut 196 are in contact with each other in the initial shape of the elastic member 190 in order to define the deformation direction of the elastic member 190. However, the notch 196 may have, for example, a groove shape in which the inner surfaces in the width direction are separated from each other.

Further, the acting member provided with the cut 196 on the outer surface side is not limited to the plate shape like the elastic member 190, and may have another shape such as a rod shape or a cylinder shape. Further, a chuck-shaped sealing portion having the cut 196 on the outer surface side can be adopted as the acting member having the cut 196 on the outer surface side.

Also, the acting member may be composed of, for example, a plurality of divided bodies arranged adjacent to each other in the width direction of the seat. According to this, when the opening operation force is input to the action member in the width direction of the seat, the gap between the adjacent divided bodies is opened to function similarly to the notch 196, and in the opening direction of the action member. The transformation of is assisted. That is, the inner surface side of the adjacent divided bodies is cut by a fixed depth from the outer surface side, for example, by the state in which the fixed sheets are restrained in a state where the adjacent divided bodies are in contact with each other and are substantially connected. It can function in much the same manner as the elastic member 190 described above with 196 encased therein. It should be noted that the adjacent divided bodies may be lined up in a contact state or may be lined apart from each other in a stationary state where the opening operation force does not act, but to the side opposite to the opening direction of the action member. Are arranged so close to each other that deformation of them can be restricted.

Also, an elastic member 200 as shown in FIG. 24 can be adopted as the acting member. The elastic member 200 has an inner surface 202 that is a flat surface and an outer surface 204 that is a convex curved surface. Thus, the elastic member 200 has a thickness dimension (vertical dimension in FIG. 24) increased toward the outer surface 204 side from both sides in the lateral direction in FIG. 24, which is the width direction of the outer sheet 18, toward the center. ing. In the present embodiment, the rate of change in the thickness dimension of the elastic member 200 gradually changes in the width direction of the outer sheet 18, and the outer surface 204 of the elastic member 200 is a curved surface.

The elastic member 200 has an inner surface 202 fixed to an outer surface 173 of the outer sheet 18. The thickness dimension of the elastic member 200, which is the height of the protrusion from the outer surface 173, is the outer surface 173 side (in FIG. 24) of the outer sheet 18 to which the elastic member 200 is fixed, from both sides in the width direction of the outer sheet 18 toward the center. (Upper side of) is enlarged. The outer surface 173 side of the outer sheet 18 is a direction from the center in the thickness direction of the outer sheet 18 which is the opening direction of the opening portion 12 of the outer sheet 18 toward the outer surface 173, and is not necessarily the outer surface 173 of the outer sheet 18. Does not mean the direction to approach.

Since the thickness dimension of the elastic member 200 is increased from both sides in the width direction of the outer sheet 18 toward the center toward the outer surface 173 side of the outer sheet 18, the central axis L shown by the alternate long and short dash line in FIG. It is convex toward the outer surface 173 side of the outer sheet 18. In the present embodiment, since the rate of change in the thickness dimension of the elastic member 200 gradually decreases toward the center in the width direction of the outer sheet 18, the central axis L is directed toward the outer surface 173 side of the outer sheet 18. It has a convex curved shape. The central axis L of the elastic member 200 connects the centers of the neutral axes in each cross section of the elastic member 200 orthogonal to the width direction of the outer sheet 18.

Thus, since the central axis L of the elastic member 200 is convex toward the outer surface 173 side of the outer sheet 18, when an opening operation force inward in the width direction is applied to both ends of the elastic member 200. The elastic member 200 is curved and deformed so as to project to the outer surface 173 side of the outer sheet 18. As a result, the opening portion 12 of the outer sheet 18 to which the elastic member 200 is fixed is deformed toward the upper side in FIG. 24, which is the outer side in the opening direction.

Although only one outer sheet 18 and the elastic member 200 are shown and described in the drawing, the outer sheet 18 is formed into a bag shape by stacking the two outer sheets 18 on the front and back and appropriately welding the outer peripheral portion, The elastic member 200 is fixed to the outer surface 173 of each outer sheet 18. Then, each elastic member 200 is deformed by the opening operation force, and each outer sheet 18 is deformed in the opening direction, whereby the opening area of the opening portion 12 is secured.

The elastic member 200 having the curved outer surface 204 is shown as an example of the working member whose thickness dimension increases from both sides in the sheet width direction toward the center, but the outer surface of the working member is not necessarily limited to the curved surface. .. For example, the outer surface of the acting member may have a polygonal shape in which a plurality of flat surfaces are combined, or a structure in which a flat surface and a curved surface are combined may be employed. Further, the thickness dimension of the acting member does not need to change over the entire sheet width direction, and if the thickness is thicker from both sides in the width direction toward the center as a whole, the thickness is partially reduced. It may have a certain portion. Further, the inner surface of the acting member is preferably a flat surface like the inner surface 202 of the elastic member 200, but may be concave or convex. As the acting member whose thickness dimension increases from both sides in the sheet width direction toward the center, a chuck-shaped sealing portion whose thickness dimension increases from both sides in the sheet width direction toward the center may be adopted.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited by the specific description thereof. For example, the shape of the action member is not particularly limited. For example, in FIG. 6, the elastic member 70 having a structure in which only one end of the pair of insert pieces 72, 72 is continuous by the folded-back portion 74 is illustrated as the acting member, but the acting member is such that both ends of the pair of insert pieces 72, 72 are It may be an annular continuous structure connected by the folded portion 74. When the acting member is an annular continuous structure, it is desirable that the intermediate portions of the pair of insertion pieces 72, 72 are separated from each other in the initial shape of the acting member on which no external force acts.

The acting member is not limited to one extending in a constant cross-sectional shape, and the cross-sectional shape may be partially or wholly changed. Specifically, for example, the vertical dimension may be partially reduced or increased, or in an elastic member having a curved cross-sectional shape as shown in FIG. 5, a portion having a non-curved cross-sectional shape, That is, a flat plate-shaped portion may be provided. By partially changing the cross-sectional shape of the elastic member in this manner, it becomes possible to control the curved shape of the elastic member in the state in which the opening operation force is applied.

In the above embodiment, an elastic member that exerts an elastic restoring force against deformation is illustrated as the acting member, but the acting member is not limited to the elastic member and may be a member having no elasticity. Further, when the acting member is composed of an elastic member, the forming material does not necessarily have to be an elastic material, and may have elasticity depending on the shape, for example.

The elastic member 46 is not limited to the structure in which the elastic member 46 is attached to the outer sheet 18 by being necessarily inserted into the bag-shaped portion 40, and may be attached to the outer sheet 18 by, for example, being fixed by means such as adhesion. In this case, since the bag-shaped portion 40 is unnecessary, it is not necessary to provide the inner sheet 38, and the elastic member 46 can be directly fixed to at least one of the outer surface and the inner surface of the outer sheet 18.

In the above-described embodiment, as the accommodating portion, the bag-shaped portion 40 having one end opened in the width direction of the outer sheet 18 and the other end sealed is illustrated. The structure is not limited to. Specifically, for example, the accommodating portion can be configured by a tubular portion having both ends open in the width direction of the outer sheet 18. Further, the opening of the accommodating portion is not necessarily limited to the one formed in the end portion in the width direction of the outer sheet 18, and for example, the opening of the accommodating portion is provided on the upper side and the action member is inserted from the upper side through the opening. You may be allowed to do so. In addition, the peripheral wall of the accommodating portion is not necessarily limited to a cylindrical shape continuously provided over the whole, and, for example, the outer sheet 18 and the inner sheet 38 are provided in the fixing portion 36 in the width direction of the outer sheet 18. It may be partially fixed at a location.

Also, the accommodation section is not necessarily limited to one formed by stacking and fixing two sheets. Specifically, for example, the accommodating portion may be formed by rolling one sheet into a tubular shape or folding it back and fixing both ends. The accommodating portion may be integrally formed with the outer sheet 18, or the accommodating portion formed separately may be fixed to the upper end portion of the bag body 22.

Further, although the accommodating portion of the above-described embodiment is the bag-shaped portion 40 extending in the width direction of the outer sheet 18 with a substantially constant cross-sectional shape, the accommodating portion has an entire cross-sectional shape in the width direction of the outer sheet 18. It may be partially or partially changed. Specifically, for example, the accommodation portion may have a gradually increasing vertical dimension toward the inlet 42. According to this, a large opening size is secured at the inlet 42, the elastic member 46 can be easily inserted, and the elastic member 46 is positioned in the vertical direction at a portion having a small vertical size apart from the inlet 42. ..

The through hole 48 may be a long hole into which four fingers other than the thumb can be inserted, for example. Further, the through hole 48 of the above-described embodiment is hooked on a finger insertion hole for inserting a finger when opening the opening portion 12 and a hanging hook of a stand when the liquid material is fed into the body of a patient. Although it also serves as a hooking hole for the purpose, it is also possible to provide a through hole used only for one of the purposes. In this case, the finger insertion hole and the hook hole may be provided independently. The insertion hole into which a finger is inserted to support the enteral nutrition bag 10 at the time of injecting the liquid material may be provided at a position where the finger can be inserted while opening the opening portion 12, for example, the outer sheet 18 It is also possible to provide a projecting piece on the upper end portion and form an insertion hole in the projecting piece.

The finger insertion holes may be formed on both sides in the width direction of the attachment portion of the elastic member 46 in the outer sheet 18, and the opening operation force may be exerted with the fingers inserted into each. Specifically, for example, by providing an insertion hole for a finger into which the thumb is inserted on one side in the width direction of the outer sheet 18 and an elongated hole-like insertion hole for inserting the other four fingers on the other side. It becomes easy to grasp the opening portion 12 of the enteral nutrition bag 10. This makes it easier to support the enteral nutrition bag 10 that contains a liquid material and becomes heavier, and causes the opening operation force to act from a position close to the elastic member 46 to efficiently deform the elastic member 46. Can also

Further, for example, if the outer sheets 18, 18 whose widthwise dimension is partially reduced are adopted below the portion where the elastic member 46 is arranged, it becomes easier for the operator to grip the enteral nutrition bag. At the same time, the portion having a large width is caught by the hand, so that the enteral nutrition bag can be easily supported. Moreover, for example, it is possible to apply an opening operation force to the opening portion 12 by the thumb and the index finger while grasping the narrow portion of the enteral nutrition bag with the whole hand.

The insertion holes of the fingers for facilitating the operator's support of the enteral nutrition bag 10 containing the liquid by hand are not necessarily the same as the through holes 48 of the above-described embodiment formed by penetrating the outer sheet 18. Without being limited to this, by fixing the band-shaped body to the outer side of the outer sheet 18 in the width direction, it is possible to form an insertion hole for a finger between the outer sheet 18 and the band-shaped body. Further, the supporting portion by hand can be formed by simply notching or providing a slit on the inner side in the width direction.

Preferably, opening operation force acting portions are provided on both sides of the opening portion 12 of the enteral nutrition bag 10 in the seat width direction, and the closed end 30 is provided between the opening operating force acting portions in the width direction. In, the inclination guide portion 34, which is an inclined portion (hereinafter, an inclined portion), is located. In other words, an action portion of the opening operation force is provided on the outer side in the seat width direction with respect to the inclined guide portion 34 which is the inclined portion of the closed end 30. Accordingly, when the opening operation force is exerted by pressing the opening portion 12 from both sides in the seat width direction toward the inside in the width direction, the inclined guide portion 34 is located on the extension line of the acting direction of the opening operation force. Then, due to the component force of the opening operation force exerted on the inclined guide portion 34 and the guide action based on the inclined shape of the inclined guide portion 34, the opening portion 12 is likely to open like a flare. Note that, for example, in the enteral feeding bag 180 of FIG. 22, the through holes 48, 48 are the portions on which the opening operation force acts, and the inclined portions of the closed ends 30, 30 are between the through holes 48, 48 in the seat width direction. The inclined guide portions 34, 34 are located. However, even when one end of the opening portion 12 is the open end 32, by arranging the inclined portion of the closed end 30 which is the other end between the acting portions of the opening operation force, the same is true. The effect of can be obtained.

Alternatively, for example, a band-shaped body having both ends fixed to the outer surface of the outer sheet 18 may be provided, and a support hole extending in the width direction of the outer sheet 18 may be formed between the outer sheet 18 and the band-shaped body. Then, the operator applies the opening operation force to the opening portion 12 while supporting the enteral nutrition bag 10 with the band-shaped body by supporting the enteral nutrition bag 10 with the hands passed through the support holes. You can

The chuck-shaped sealing portion 26 is not essential and can be omitted, for example, when the liquid material does not leak. Further, the elastic member 46 can be provided below the chuck-shaped sealing portion 26 (on the accommodation area 24 side), but preferably, the elastic member 46 is provided above the chuck-shaped sealing portion 26. It is provided.

Further, the elastic member 62 shown in FIG. 5 has a curved cross-section, but substantially the same effect is exhibited even if the elastic member 62 has a chevron cross-section that is bent at the center. Furthermore, in the elastic member 100 shown in FIG. 9, the folded-back portion 102 has two fold lines 106 and 106, and is an action surface of the opening operation force between the two fold lines 106 and 106. Although the pressing surface 104 is formed, the folded portion 102 may be formed with, for example, three or more broken lines.

The structures described in each of the above-mentioned embodiments can also be adopted in an appropriate combination.

10, 60, 80, 90, 132, 150, 160, 170, 180: Enteral nutrition bag, 12: Opening portion, 18: Outer sheet (sheet), 24: Storage area, 32: Open end, 34: Inclination guide Part, 40: bag-shaped part (accommodation part), 42, 92: inlet, 44: guide surface, 46, 62, 70, 100, 110, 120, 172, 182, 190, 200: elastic member (acting member) , 48: through hole (pressing portion), 74, 102, 124: folded portion, 94: first guiding surface, 96: second guiding surface, 104: pressing surface (working surface), 106: broken line, 162: inner sheet (Sheet), 173: outer surface (outer surface of sheet), 174: open end, 175: package, 184: narrow portion, 186: wide portion, 194: outer surface (outer surface of action member), 196: cut

Claims (14)

1. In the enteral nutrition bag in which the accommodation area of the liquid material having the opening portion in the upper part is formed between the overlapping surfaces of the sheets on both the front and back sides,
   An action member extending in the width direction of the sheet is attached to at least one of the sheets on both sides of the front and back in the opening portion of the accommodation area, and both widthwise edges of the sheet in the opening portion are close to each other. An enteral nutrition bag provided with a deformation assisting mechanism for assisting the deformation of the opening portion of the acting member in the opening direction when the opening operation force pressing in the direction of action is applied.
2. In the opening portion of the accommodation area, the action member extending in the width direction of the sheet is attached to both of the sheets on both front and back sides,
   The enteral nutrition bag according to claim 1, wherein the deformation assisting mechanism is configured by forming the action member into a continuous structure in which at least one end portion in the width direction of the sheet is folded back.
3. The enteral nutrition bag according to claim 2, wherein, in the acting member made of the continuous structure, the folded end has a folded structure having a plurality of folding lines.
4. The acting member has a plate shape extending along the seat, and the folded structure has two fold lines, and the opening operation force acting surface is provided between the two fold lines. The enteral nutrition bag according to claim 3, which is provided.
5. 5. The deformation assisting mechanism is configured such that the acting member has a cross-sectional shape that is curved or bent so as to be convex on the outer surface side of the seat and extends in the width direction of the seat. The enteral nutrition bag according to any one of 1.
6. The warp according to any one of claims 1 to 5, wherein the deformation assisting mechanism is configured such that the acting member has an initial shape that curves in the opening direction of the opening in the width direction of the sheet. Enteral feeding bag.
7. The enteral nutrition bag according to claim 6, wherein the acting member is housed and packaged in a package in a state of being curved in the opening direction of the opening in the width direction of the sheet.
8. The opening portion has a wide portion having a large width dimension and a narrow portion having a small width dimension,
   The enteral nutrition bag according to claim 6 or 7, wherein a pressing portion to which the opening operation force is applied is provided on the outer side in the width direction of the narrow portion, and the action member is provided on the wide portion.
9. The enteral nutrition bag according to any one of claims 1 to 8, wherein the deformation assisting mechanism is configured by providing a notch extending vertically with respect to an outer surface of the acting member.
10. In the deformation assisting mechanism, the thickness dimension of the acting member is increased toward the outer side of the sheet from both sides in the width direction of the sheet toward the center, and the central axis of the acting member extending in the width direction of the sheet is The enteral nutrition bag according to any one of claims 1 to 9, which has a convex shape on the outer surface side of the sheet.
11. In the deformation assisting mechanism, at least one widthwise end edge portion of the sheet in the opening portion of the accommodation area, the sheets on both front and back sides are not fixed to each other in an overlapping state but are open ends. The enteral nutrition bag according to any one of claims 1 to 10, which is constituted by:
12. The seat is provided with an accommodating portion extending in the width direction of the sheet, and by accommodating the operating member in the accommodating portion, the operating member is attached to the seat,
    An inlet is provided on one side of the accommodation portion in the width direction of the seat, and a peripheral wall portion of the accommodation portion partially extends outward in the circumferential direction of the accommodation portion to form the accommodation portion. The enteral nutrition bag according to any one of claims 1 to 11, further comprising a guide surface for guiding the tip of the action member inserted into the inlet to the inlet.
13. A chuck-like sealing portion that can open and close the opening portion is provided, and the side closer to the opening end of the opening portion than the chuck-like sealing portion is the front and back sides at at least one end in the width direction of the sheet. The sheets on both sides are closed ends that are fixed in a state of being overlapped with each other, and the closed ends have an inclined shape, whereby the opening width dimension of the opening portion increases toward the opening end side, The enteral nutrition bag according to any one of claims 1 to 12, wherein the inclined closed end is provided outside the action member in the width direction of the sheet.
14. When manufacturing the enteral nutrition bag according to claim 5, an enteral in which the action member attached to the opening is subjected to press working so as to be convex outward in the opening direction of the opening. Method for manufacturing nutrition bag.

Images