JP2023134596A - Transintestinal nutrition bag - Google Patents

Abstract

To provide a novel transintestinal nutrition bag which can stably open an opening, and hold the opening in an open state.SOLUTION: There is provided a transintestinal nutrition bag on which a liquid-state body storage region 24 with an opening part 12 on an upper part thereof, is formed between lamination surfaces of both of a front and a rear side sheets 18, 18, and the opening part 12 of the storage region 24 has an elastic member 46 extending in a width direction of the sheet 18 on at least one of front and rear side sheets 18, 18, and has a deformation assist mechanism for assisting deformation of the opening part 12 on the elastic member 46 in an open direction when opening operation force for pressing both edge parts of the sheets 18 on the opening part 12 in the width direction in a direction where the sheets approach, acts.SELECTED DRAWING: Figure 1

Description

The present invention relates to enteral feeding bags used in the medical field.

In the medical field, enteral nutrition involves administering nutrients and medicines to the stomach or intestines through tubes inserted into the patient's nasal cavity, oral cavity, or fistula. Nutritional bags are used.

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

By the way, when using an enteral nutrition bag, a liquid nutritional solution is poured into the bag through the opening. This injection work is generally performed by one person, and while holding the opening of the enteral feeding bag open with one hand, the patient tilts the cup or other container held in the other hand and places the bag into the container. This is done by pouring the liquid into the enteral feeding bag through the opening.

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

In addition, in view of such problems, Japanese Patent Laid-Open No. 2011-78737 (Patent Document 1) discloses that a sheet-like opening/closing operation section is fixed to the outer surface of each of the two resin sheets constituting the opening part. A structure has been proposed in which holes for finger insertion are provided on the outside of the seat so that both fingers inserted into each opening/closing operation part can be opened away from each other to hold the opening in the open state. .

Japanese Patent Application Publication No. 2011-78737

However, the present inventor's studies have revealed that in the conventional structure described in Patent Document 1, each finger must continue to be spread widely in order to maintain the shape of the opening portion formed of a soft resin sheet. In particular, in enteral feeding bags that are expected to hold about 1000 ml of liquid, it is difficult for the user to keep their fingers spread apart, and the weight of the liquid acts on the resin sheet at the opening, causing the bag to open. It has become clear that there is a new problem in that it is difficult to maintain a stable opening shape because the parts are easily deformed.

An object of the present invention is to provide an enteral nutrition bag with a novel structure that allows the opening portion to be opened more stably and to be maintained in the open state.

Hereinafter, aspects of the present invention made to solve such problems will be described. Note that the constituent elements employed in each aspect described below can be employed in any possible combination.

A first aspect of the present invention is an enteral nutrition bag in which a liquid storage area having an opening at the top is formed between the stacked surfaces of front and back sheets, wherein the opening of the storage area has a , an elastic member extending in the width direction of the sheet is attached to at least one of the front and back sheets, and an opening operation force that presses both widthwise edges of the sheet at the opening portion in a direction toward each other. During operation, a deformation assisting mechanism is provided that assists deformation of the opening portion of the elastic member in the opening direction.

In the enteral nutrition bag of this embodiment, the opening portion can be easily opened by deforming the elastic member whose deformation direction is directed outward using the deformation assisting mechanism using the force in the grasping direction with the fingers. At the same time, it becomes possible to maintain the open state in a stable shape. In other words, by utilizing the grasping force of the fingers, which exerts a much greater force when closing than when opening, the opening portion can be easily and stably shaped by increasing the rigidity with an elastic member and stabilizing the shape of the deformation. It can be opened and held with.

Therefore, liquids such as nutrient solutions and medicinal solutions can be easily introduced into the storage area through the openings, and even if the weight of the liquid becomes large, problems such as the openings unintentionally deforming or closing may occur. can be prevented.

A second aspect of the present invention is the enteral feeding bag according to the first aspect, in which the opening portion of the storage area has the elastic material extending in the width direction of the sheet on both the front and back sides of the sheet. The deformation auxiliary mechanism is a continuous structure in which the elastic member is folded back at at least one end in the width direction of the sheet.

In the enteral nutrition bag of this embodiment, since the elastic members attached to the front and back sheets are interconnected at least at one end, an inward opening operation force in the width direction is input between both ends of the elastic members. Then, a moment acts on the portion of the elastic member attached to the sheet, causing the portion to deform convexly in the opening direction of the opening portion. Therefore, since the folded elastic members are attached to both the front and back sheets, when the opening operation force is applied, the elastic members deform in the opening direction of the opening, stabilizing the opening. and open it.

A third aspect of the present invention is the enteral nutrition bag according to the second aspect, in which the elastic member made of the continuous structure has a folded end portion having a plurality of fold lines. It is said to be a structure.

In the enteral nutrition bag of this embodiment, it is possible to provide a portion where the opening operation force acts between the fold lines, and the opening operation efficiency can be improved.

A fourth aspect of the present invention is the enteral nutrition bag described in the third aspect, wherein the elastic member has a plate shape that spreads along the sheet, and the folded structure has two fold lines. A surface on which the opening operation force acts is provided between the two polygonal lines.

In the enteral nutrition bag of this embodiment, the opening operation force is easily transmitted to the portion of the elastic member attached to each sheet in the opening direction via each fold line. In particular, the deflection due to the pressing force applied to the working surface formed between the two fold lines is transmitted as a bending force in the direction of expanding the portion of the elastic member attached to each sheet outward through the fold line. to open the opening. In addition, the working surface formed between the two polygonal lines may be a substantially flat surface, or may be a curved surface where the two polygonal lines are curved or bent so that the central portion is concave inward.

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

In the enteral nutrition bag of this embodiment, the elastic member has a cross-sectional shape that is convex toward the outer surface, so that it is easier to bend in the direction of expanding outward from the opening rather than expanding inward. As a result, the elastic member is elastically deformed so as to swell outward due to the opening operation force, and the opening portion can be stably opened.

A sixth aspect of the present invention is the enteral nutrition bag according to any one of the first to fifth aspects, wherein the deformation assisting mechanism is configured such that the elastic member is in 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 feeding bag of this embodiment, the neutral axis of the elastic member is curved outward in the initial shape, so that the opening operation force applied in the compression direction from both ends of the elastic member causes the elastic member to curve outward. This results in a bending moment. As a result, the opening operation force causes the elastic member to elastically deform outward so that the curvature increases, and the opening portion can be stably opened.

A seventh aspect of the present invention is that in the enteral nutrition bag according to any one of the first to sixth aspects, the deformation assisting mechanism is configured such that the deformation assisting mechanism At least one edge portion of the sheets on both the front and back sides are stacked one on top of the other and are not fixed, but are open ends.

In the enteral feeding bag of this embodiment, at least one edge in the width direction of the front and back sheets is not fixed to each other and is an open end, thereby providing resistance to deformation in the opening direction of the opening portion. power is dissolved. As a result, when an opening operation force is applied, the elastic member attached to the opening of the sheet is not restrained by the adhesion of the front and back sheets, and is easily deformed in the opening direction of the opening. This makes it easier to open the opening.

An eighth aspect of the present invention is the enteral nutrition bag described in any one of the first to seventh aspects, wherein the sheet is provided with a storage section extending in the width direction of the sheet, By storing the elastic member in the accommodating portion, the elastic member is attached to the sheet, while an insertion port is provided on one side in the width direction of the sheet in the accommodating portion, and the elastic member is attached to the sheet. A peripheral wall portion of the accommodating portion is provided with a guide surface that partially extends outward in the circumferential direction of the insertion port and guides the tip of the elastic member inserted into the accommodating portion to the insertion port. be.

In the enteral nutrition bag of this embodiment, the elastic member can be easily attached to the sheet by inserting the elastic member into the accommodating portion of the sheet. In addition, by moving the elastic member along the guide surface, the elastic member is guided to the insertion port of the accommodating portion, so that the work of inserting the elastic member into the accommodating portion becomes easier.

According to the present invention, in an enteral nutrition bag, it becomes possible to more stably open the opening portion and further maintain the open state.

FIG. 1 is a front view showing an enteral nutrition bag as a first embodiment of the present invention. An enlarged view corresponding to the II-II cross section in FIG. 1. An enlarged view corresponding to the III-III cross section in FIG. 1. FIG. 2 is a diagram illustrating the operation of opening the opening of the enteral nutrition bag shown in FIG. 1, in which (a) shows a state where the opening is closed, and (b) shows a state where the opening is open. FIG. 2 is a sectional view showing an enteral nutrition bag as a second embodiment of the present invention. FIG. 7 is a perspective view of an elastic member constituting an enteral nutrition bag according to a third embodiment of the present invention. FIG. 7 is a front view showing the main parts of the enteral nutrition bag equipped with the elastic member shown in FIG. 6, with (a) showing the front side and (b) showing the back side, respectively. 7 is a cross-sectional view showing the main parts of the enteral feeding bag equipped with the elastic member shown in FIG. 6, in which (a) shows a state in which the elastic member has been attached, and (b) shows a state before the elastic member is attached, respectively. show. FIG. 2 is a perspective view of an elastic member constituting an enteral nutrition bag as another embodiment of the present invention.

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

1-3, an enteral feeding bag 10 according to a first embodiment of the invention is shown. This enteral feeding bag 10 has a bag structure that is long in the vertical direction in FIG. A port section 16 is provided as a port for use. A liquid substance such as a nutrient solution is stored inside and used as a nutrient supply bag. Note that the bag body 22 (described later) of the enteral feeding bag 10 in FIGS. 2 to 4 is enlarged in the thickness direction (horizontal direction in FIG. 2) compared to other directions for ease of understanding. It is illustrated as follows.

More specifically, the enteral nutrition bag 10 has a structure in which outer sheets 18, 18 as sheets are stacked on top of each other and fixed to each other at a surrounding fixing part 20, and a bag-like bag main body 22 It is equipped with The fixing portions 20 are provided in three directions around the two overlapping outer sheets 18, 18, and an opening portion 12 is provided above the outer sheets 18, 18, which are not fixed (upper side in FIG. 1). Note that the means for fixing the front and back outer sheets 18, 18 in this fixing portion 20 includes, for example, bonding with an adhesive, but is not particularly limited, and preferably thermal welding (heat sealing) is employed. Ru. By configuring the front and back outer sheets 18, 18 in a bag shape that opens upward, a storage area 24 for storing the liquid is provided inside the bag body 22, that is, between the front and back outer sheets 18, 18. It is formed.

Further, in the opening portion 12 of the bag body 22 above the storage area 24, a zipper-shaped sealing part 26 that allows the bag body 22, in other words, the storage area 24 to be opened and closed, is attached to the front and back outer sheets 18, 18. It is provided. In short, the opening portion 12 is formed by stacking the front and back outer sheets 18, 18 so that they can be opened and closed using the zipper-shaped sealing portion 26.

The chuck-shaped sealing portion 26 allows the opening portion 12 to be repeatedly opened and closed, and in the closed state, the storage area 24 can be sealed liquid-tightly from the outside. Although the specific structure of the chuck-shaped sealing portion 26 is not limited, for example, it may include a groove provided on the inner surface of one outer sheet 18 and extending in the width direction of the opening portion 12, and a groove provided on the inner surface of the other outer sheet 18. Various known structures can be employed, such as a resin chuck made of protrusions extending in the width direction of the opening portion 12. The chuck-shaped sealing portion 26 of this embodiment is a resin chuck consisting of a groove and a protrusion, and is closed by pressing the groove and the protrusion against each other and elastically engaging the protrusion and the protrusion.

In FIG. 1, the concavo-convex fitting portions constituting the zipper-like sealing portion 26 are formed on the inner surfaces of the front and back outer sheets 18, 18 inside the bag body 22. , 18 are made of a transparent material, and for the purpose of making the structure easier to understand, the chuck-shaped sealing portion 26 is shown in solid lines. Further, the chuck-shaped sealing portion 26 is formed over the entire length of the outer sheet 18 in the width direction (the left-right direction in FIG. 1) in the opening portion 12 so that the opening portion 12 can be sealed.

Furthermore, a pair of flap-shaped parts 28, 28 are formed at the upper end of the bag body 22. That is, the front and back outer sheets 18, 18 constituting the bag body 22 are formed with a pair of flap-shaped parts 28, 28 that extend upwards (upwards in FIG. 1) from the zipper-shaped sealing part 26. and are superimposed on each other.

In addition, although the pair of flap-like parts 28 and 28 are made into the same shape in this embodiment, a pair of flap-like part does not have to be the same in shape. For example, at least one of the pair of flaps is provided with a knob that protrudes outward, and the pair of flaps are opened by pinching the knob with fingers and applying an external force in the direction of opening. It is also possible to make it easier.

As the material for the front and back outer sheets 18, 18 constituting the bag body 22, a conventionally known soft resin sheet material may be appropriately employed in consideration of resistance to liquids, etc. That is, the front and back outer sheets 18, 18 are preferably transparent flexible resin sheets made of a resin material such as polypropylene, polyethylene, polyester, or polyvinyl chloride. The front and back outer sheets 18, 18 are preferably formed of the same resin material, but may be formed of different resin materials. Further, in the bag body 22, each of the outer sheets 18, 18 may be formed entirely of the same material, or, for example, the flap-shaped portion 28 and the portion forming the storage area 24 may be formed of different materials. For example, the forming material may be different depending on the part.

Further, at one end of the pair of flap-shaped parts 28, 28 in the width direction (the left side in FIG. 1), a fixed part 20 extends to the upper end. As a result, one end of the pair of flap-shaped portions 28, 28 forms a closed end 30 that is fixed to each other.

On the other hand, at the other widthwise end (right side in FIG. 1) of the pair of flap parts 28, 28, the fixed part 20 does not extend to the upper end of the pair of flap parts 28, 28. . In this embodiment, the right fixing part 20 extends only to the lower ends of the pair of flap-shaped parts 28, 28, so that the other end of the pair of flap-shaped parts 28, 28 They have open ends 32 that can be separated from each other. In short, at the open end 32, more than half of the length of the pair of flap-shaped parts 28, 28 in the vertical direction from the upper end is not fixed to each other and is open so that they can be separated from each other. The pair of flap-shaped parts 28, 28 may have both ends in the width direction as open ends 32, or both ends as closed ends 30, but preferably At least one end is an open end 32.

In particular, in this embodiment, the fixed portion 20 on the closed end 30 side of the pair of flap portions 28, 28 opens from the closed end 30 side as it goes downward from the upper end of the bag body 22 (downward in FIG. 1). It is inclined toward the end 32 (from the left to the right in FIG. 1). The inclined guide portion 34 is formed by welding the closed end 30 side of the pair of flap portions 28, 28 in an inclined manner in this manner. In the open state in which the flap portions 28, 28, which will be described later, are separated from each other, the opening dimension in the width direction (the left-right direction in FIG. 1) of the opening portion 12 is adjusted by the inclined guide portion 34 to the lower end of the opening portion 12. It gradually becomes larger from the top to the top.

Further, inner sheets 38, 38 are superimposed on the pair of flap-shaped portions 28, 28. The inner sheets 38, 38 are synthetic resin sheets similar to the outer sheets 18, 18, and are arranged in the height direction (vertical direction in FIG. 1) and width direction (vertical direction in FIG. 1) of the pair of flap-like portions 28, 28. The flaps are overlapped on the inner surfaces of the flaps 28, 28 at the middle portion in the left-right direction). The overlapped flap portions 28, 28 and inner sheets 38, 38 are fixed to each other at a surrounding fixing portion 36. As a result, the pair of flap-shaped parts 28, 28 are each formed with a bag-shaped part 40 as a housing part having a space inside. In addition, since the inner sheets 38, 38 are fixed to the upper end portions of the outer sheets 18, 18, the opening portion 12 in the outer sheets 18, 18 is reinforced by the inner sheets 38, 38, and the partial rigidity is reduced. Improvements are being made.

The bag-like portion 40 extends in the width direction (left-right direction in FIG. 1) with approximately constant vertical dimensions, and has one end sealed and the other end formed into a flap of the outer sheet 18. It is opened to the outside through an inlet 42 that opens in the section 28 . The peripheral wall portion of the bag-like portion 40 is constituted by the flap-like portion 28 of the outer sheet 18 and the inner sheet 38 that are fixed to each other at the fixing portion 36 . In this embodiment, by overlapping and fixing the inner sheets 38, 38 on the inner surface, which is the overlapping surface of the outer sheets 18, 18, a storage section (a bag-shaped section) having a space on the inner surface side of the outer sheets 18, 18 is constructed. 40) is formed. According to this, the outer sheet 18 and the inner sheet 38 can be easily heat-welded, and the bag-shaped portion 40 with excellent durability can be obtained at a low cost. Of course, for example, it is also possible to form a storage section (bag-shaped section) having a space on the outer surface side of the outer sheets 18, 18 by overlapping and fixing another sheet to the outer surface of the outer sheets 18, 18. be.

The fixing means of the fixing part 36 for forming the bag-like part 40 is the same as that of the fixing part 20 described above, and includes, for example, bonding with adhesive, etc., and is not particularly limited, but heat welding ( Heat sealing) is preferably employed. Furthermore, the material of the outer sheet 18 and the material of the inner sheet 38 may be the same or different.

The insertion port 42 can be formed by a notch, a window-like cutout, a notch, etc. provided in the outer sheet 18. The insertion port 42 of this embodiment is formed by a rectangular window-shaped cutout that opens in the outer sheet 18, and the portion of the peripheral wall of the bag-shaped portion 40 that is made up of the inner sheet 38 is made of the outer sheet 18. It extends to the outside in the width direction (to the right side in FIG. 1) than the part where it is inserted. A portion of the inner sheet 38 that is exposed to the outside through a cutout formed in the outer sheet 18 serves as a guide surface 44 that continues to the insertion port 42 .

Note that the insertion opening 42 can also be formed by, for example, making a U-shaped cut in the outer sheet 18 to form a section, and folding this section between the overlapping surfaces of the outer sheet 18 and the inner sheet 38. be. According to this, the outer sheet 18 and the inner sheet 38 are separated from each other by the cut piece, and the insertion opening 42, which is the opening of the bag-shaped portion 40, is widened, so that insertion of the elastic member 46, which will be described later, into the bag-shaped portion 40 is facilitated. It can be easy.

An elastic member 46 is inserted into each of the bag-shaped parts 40, 40. The elastic member 46 is a longitudinal plate-shaped member made of metal, synthetic resin, composite material, or the like, and has elasticity against bending deformation in the longitudinal direction, which is the left-right direction in FIG. The elastic member 46 is made harder than the bag body 22 and has greater deformation rigidity in the bending direction than the bag body 22. As shown in FIG. 3, the elastic member 46 of this embodiment is curved so as to draw an outwardly convex curve in the longitudinal direction (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 gradually change, but the elastic member 46 may be curved with a substantially constant radius of curvature, but the elastic member 46 may be curved with a substantially constant radius of curvature, but the elastic member 46 may be curved with a substantially constant radius of curvature, but the elastic member 46 may be curved with a radius of curvature that gradually changes. It is convex.

In this embodiment, a plate-shaped elastic member 46 is illustrated, but the elastic member may be, for example, rod-shaped or sheet-shaped, and is a longitudinal member whose deformation rigidity is increased relative to the outer sheet 18. will be 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 insertion port 42. Thereby, the elastic member 46 is attached to the outer sheet 18 at the opening portion 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, 18 on both the front and back sides, respectively. Note that the elastic member 46 may be attached only to either the front or back outer sheet 18.

As shown in FIG. 1, the elastic member 46 of this embodiment is made shorter than the bag-like part 40 in the width direction of the outer sheet 18 and is entirely housed in the bag-like part 40. It may have a longer length and protrude from the bag-shaped portion 40. Furthermore, by fixing the outer sheet 18 and the inner sheet 38 that constitute the wall of the bag-like part 40 to each other at the end on the insertion port 42 side, the elastic member 46 can be prevented from coming off from the bag-like part 40. You can also do it. Furthermore, when the insertion port 42 is provided on the closed end 30 side, the elastic member 46 is prevented from coming off by fixing the outer sheets 18, 18 to each other at the end of the bag-shaped portion 40 on the insertion port 42 side. It is possible to do so, and there is no need to fix the inner sheets 38, 38. In addition to fixing the end of the bag-shaped part 40 on the insertion port 42 side, for example, if a hole or a constriction is provided in the middle part of the elastic member, the part where the hole or constriction is formed is used to secure the bag-like part. By fixing the peripheral wall portion of the portion 40, the hole or constriction of the elastic member is engaged with the fixed portion of the bag-shaped portion 40, thereby preventing the elastic member from coming off. Further, the elastic member 46 of this embodiment has a curved plate shape, and both ends of the elastic member 46 in the insertion/removal direction (the left-right direction in FIGS. 1 and 3) with respect to the bag-shaped portion 40 are inclined toward the inner sheet 38 side. Therefore, it is difficult for the outer sheet 18 to come off through the insertion opening 42 formed in the outer sheet 18.

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

A through hole 48 is formed in the upper part of the bag body 22. The through hole 48 is provided above the opening portion 12 of the two outer sheets 18, 18 (above in FIG. 1). In this embodiment, the through-hole 48 is formed in an extending piece 50 provided on the closed end 30 side (left side in FIG. 1) of the pair of flap-shaped parts 28, 28, and is overlapped with each other. It passes through a pair of flap-like portions 28, 28 which are fixed together. The through hole 48 is preferably arranged in line with the bag-shaped portion 40 in the width direction of the bag body 22, and provided at substantially the same position in the vertical direction. Note that the through hole 48 does not necessarily need to be formed in the overlapped portion of the pair of flap-shaped parts 28, 28; for example, the extending piece 50 may be formed only in one flap-shaped part 28, and the extending piece 50 may be A through hole 48 may also be formed. Further, for example, it is also possible to form the through hole 48 in the peripheral wall of the bag-like portion 40 and use the through-hole 48 as the insertion port 42 of the bag-like portion 40 .

By inserting a hanging hook (not shown) or the like into this through hole 48, the enteral nutrition bag 10 can be suspended and supported from a drip stand (not shown) or the like. Further, the through hole 48 allows a finger to be inserted. The through hole 48 of this embodiment serves as a hook hole for hanging the enteral nutrition bag 10 on a hanging hook of a stand, etc., and a hole for a worker (described later) who injects a liquid into the storage area 24 through the opening portion 12. ) also serves as a finger insertion hole for supporting the enteral nutrition bag 10 with one hand.

At the bottom of the bag body 22, a port portion 16 is provided that penetrates the storage area 24 in and out. In this embodiment, the port portion 16 is provided at a corner portion of the lower edge of the bag body 22 that faces the through hole 48 in a diagonal direction. The port portion 16 is made of a hard material such as synthetic resin, and preferably has greater rigidity than the two outer sheets 18, 18 that constitute the bag body 22. The port portion 16 is sandwiched between the front and back outer sheets 18, 18, and is disposed through the fixed portion 20 of both sheets 18, 18, and is, for example, integrally welded to both sheets 18, 18. or fixed by adhesive, etc.

The port section 16 has an external opening opposite to an internal opening that is connected to the inside of the bag body 22 (accommodation area 24), as shown by the two-dot chain line in FIG. A tube 14 can be connected. This external tube 14 can be a conventionally known one, and is not a component of the present invention, so a detailed explanation will be omitted. (flow regulator), a connector, etc. (none of which are shown) are provided, and the device is inserted through the nasal cavity, fistula, etc., and reaches the patient's body (not shown), such as the stomach or small intestine. A liquid such as a nutrient solution contained in the storage area 24 is administered into the patient's body through the external tube 14.

The lower part of the bag main body 22 and the storage area 24 from the middle part in the height direction is a widened part 52 that is made larger toward the open end 32 side (to the right in FIG. 1) than the upper part in the width direction. The center of gravity position is shifted toward the open end 32 side. Further, a through hole 48 that serves as a support point when suspended from a hanging hook of a stand (not shown) is provided at the 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 tilted clockwise around the through hole 48 from the state shown in FIG. 1 . As a result, the port portion 16 is positioned so as to extend substantially vertically. Furthermore, 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 a stand, the liquid contained in the storage area 24 will flow into the port portion 16. This allows the liquid to flow in easily, 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, when an operator puts a liquid such as a nutrient solution or a medicinal solution into the storage area 24 of the bag body 22, as shown in FIG. , it becomes possible to open and hold the opening portion 12 with one hand.

First, as shown in FIG. 4(a), the operator inserts the thumb 54 into the through hole 48 of the enteral nutrition bag 10, and inserts the index finger 56 and middle finger 58 into the flap portion 28 of the enteral nutrition bag 10. 28 on the open end 32 side. Alternatively, the index finger 56 or middle finger 58 may be inserted into the through hole 48, and the thumb 54 may be placed on the open end 32 side of the flap-shaped portions 28, 28.

Next, the operator applies an opening operation force, which is a compressive force in the width direction, to the opening portion 12 of the enteral nutrition bag 10 in a direction that reduces the distance between the thumb 54 and the index finger 56 and middle finger 58. As a result, a compressive 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. Note that the operator can grasp the enteral nutrition bag 10 with one hand by applying an opening force to the elastic member 46, which is more rigid 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, when it is compressed by the opening operation force, it elastically deforms to increase its curvature. The elastic member 46 is disposed in the bag-shaped portion 40 so as to be convex toward the outer surface of the outer sheet 18 in 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 be separated 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 elastic member 46 in the opening direction of the opening portion 12 is configured such that the elastic member 46 is curved in the width direction of the outer sheet 18 in the opening direction of the opening portion 12. It is configured by taking the initial shape.

Since the outer sheets 18 , 18 forming the walls of the opening portion 12 are more flexible than the elastic members 46 , 46 , they follow the deformation of the elastic member 46 in the opening portion 12 . Therefore, as shown in FIG. 4(b), 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 this embodiment, the flap-shaped parts 28, 28 that hold the elastic member 46 have an open end 32 at one end edge in the width direction of the outer sheet 18. Therefore, the deformation of the outer sheets 18, 18 due to the deformation of the elastic members 46, 46 is allowed without being constrained at the open end 32, making it easier for the opening portion 12 to open. As described above, in the present embodiment, one end edge in the width direction of the flap-shaped parts 28, 28 is the open end 32, so that the deformation of the opening part 12 in the opening direction by the elastic member 46 is assisted. The deformation assisting mechanism is also constituted by the open end 32. Note that, although two or more types of deformation auxiliary mechanisms may be provided as in this embodiment, only one type may be provided.

The engaging force of the chuck in the chuck-shaped sealing portion 26 can be adjusted depending on the shape and size of the chuck, so by adjusting the engaging force of the chuck, the chuck can be opened from the closed state by the action of the opening operation force. It is also possible to switch to the state. When setting the meshing force of the chuck to be strong in order to improve the reliability of the chuck, it is sufficient to open the chuck-shaped sealing portion 26 in advance.

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

As the amount of liquid injected into the storage area 24 increases, a larger load acts on the hand gripping the enteral nutrition bag 10, but in this embodiment, the thumb 54 is inserted into the through hole 48. This makes it easier to support the weight of the liquid.

Although FIG. 4 shows the enteral feeding bag 10 being held with the left hand, for example, the enteral feeding bag 10 may be held with the right hand and the liquid is poured into the storage area 24 with the left hand. is also possible. If the operator is right-handed, by gripping the enteral nutrition bag 10 with the left hand as shown in FIG. 4, the liquid can be poured into the storage area 24 with high precision using the dominant hand. Alternatively, by grasping the enteral nutrition bag 10 with the right hand, the open portion 12 of the enteral nutrition bag 10 can be maintained in the open state more reliably. Therefore, it is preferable that the enteral nutrition bag 10 be symmetrical on the front and back.

The enteral nutrition bag 10 containing an appropriate amount of liquid in the storage area 24 is suspended with the port portion 16 facing downward by inserting a hanging hook of a stand (not shown) into the through hole 48. . Then, the liquid in the storage area 24 flows out from the port portion 16 due to gravity and is injected into the patient's body through the external tube 14.

In this embodiment, a case has been described in which the opening portion 12 is opened and liquid is poured in before the enteral feeding bag 10 is hung from the hanging hook of the stand. With the bag 10 suspended, an opening operation force may be applied to open the opening portion 12, and the liquid 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 placing the thumb 54 on the hanging hook, an opening operation force is applied between the hanging hook placed on 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, an increase in the weight of the enteral nutrition bag 10 due to injection of the liquid is less likely to become a problem.

In this way, according to the enteral nutrition bag 10, since the elastic member 46 is attached to the opening portion 12, an inward opening operation force can be applied in the width direction substantially perpendicular to the opening direction of the opening portion 12. Accordingly, 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 of deforming the opening portion 12 by collapsing it in the width direction between the thumb 54 and the index finger 56 and middle finger 58.

In contrast to the structure of Patent Document 1, which applies an opening operation force by moving the fingers in the direction of stretching, the enteral nutrition bag 10 according to the present invention applies the opening operation force by moving the fingers in the direction of bending. It becomes possible to efficiently apply operating force through more natural movements. Therefore, compared to the conventional structure disclosed in Patent Document 1, it is possible to apply a larger opening operation force, and it also becomes easier to adjust the opening operation force with more precision.

Moreover, the operator who pours the liquid into the enteral nutrition bag 10 can easily and stably realize the opening deformation of the opening portion 12 by applying an opening operation force to the opening portion 12 from the outside. Therefore, the operator does not need to touch the inner surfaces of the outer sheets 18, 18 and inner sheets 38, 38, which may come into contact with the liquid, and can avoid contamination of the liquid.

Furthermore, by continuously applying an opening operating force to the elastic member 46, it is easy to maintain the opening portion 12 in the open state. The enteral feeding bag 10 can be grasped with one hand, and the opening section 12 can be opened by applying an opening operation force with the grasping hand. The open state of the intestinal feeding bag 10 can be maintained. Therefore, the liquid can be injected into the storage area 24 with the other hand. Therefore, even if only one person is engaged in the work of putting the liquid into the storage area 24, the work can be performed with sufficiently high precision and efficiency.

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

Further, the inner sheet 38 forming a part of the peripheral wall of the bag-like part 40 extends further in the width direction than the outer sheet 18 forming the other part of the peripheral wall of the bag-like part 40, so that there is a difference. It constitutes a guide surface 44 that continues to the entrance 42. 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 insertion port 42 along the inner sheet 38. This facilitates the operation of inserting the elastic member 46 into the bag-shaped portion 40 from the insertion port 42. Note that the elastic member 46 may be guided to the guide surface 44 along the outer surface of a portion of the outer sheet 18 located closer to the open end 32 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, and the pair of flap-shaped portions 28, 28 are separated from the open end 32 side. Since the opening portion 12 is expanded by the opening portion 12, the opening portion 12 can be expanded to a larger extent than when both ends of the flap portions 28, 28 are sealed. Thereby, the worker who injects the liquid into the storage area 24 can do the work easily, and the mental and labor burden on the worker can be reduced.

In particular, in this embodiment, the edge portions of the pair of flap-like portions 28, 28 on the closed end 30 side are used as the inclined guide portions 34, and when the pair of flap-like portions 28, 28 are expanded, the opening portion The opening area of 12 gradually increases toward the upper end side into which the liquid is poured. As a result, the inlet for injecting the liquid into the storage area 24 is enlarged, and the liquid can be easily poured into the storage area 24 without spilling.

By the way, the specific structure of the elastic member is not limited to the illustration of the first embodiment. Below, some examples of elastic members with different structures will be shown. In the following description, members and parts that are substantially the same as those in other embodiments are designated by the same reference numerals in the drawings, and the description thereof will be omitted.

FIG. 5 shows the main parts of an enteral feeding bag 60 as a second embodiment of the present invention. The enteral nutrition bag 60 has a structure in which an elastic member 62 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 perpendicular to the paper plane in FIG. 5). . The elastic member 62 is disposed in a convex direction toward the outer surfaces of the outer sheets 18, 18 (left and right outer sides in FIG. 5) when inserted into the bag-shaped portion 40. In addition, in FIG. 5, in order to facilitate understanding, the thickness of each member is exaggerated and the curvature of the elastic member 62 is shown to be large.

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 62 in the intermediate portion 62 is elastically deformed so as to be bent, and the opening portion 12 of the enteral feeding bag 60 is deformed in the opening direction. As a result, the enteral nutrition bag 60 can easily open the opening portion 12 and stably maintain the open state of the opening portion 12, similarly to the enteral nutrition bag 10 of the first embodiment. be able to.

In particular, the elastic member 62 of this embodiment has a curved cross-sectional shape that is convex toward the opening direction of the opening portion 12 (left and right outward directions in FIG. 5). 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 cross-sectional shape. In short, in the present embodiment, the deformation assisting mechanism that assists the deformation of the opening portion 12 in the elastic member 62 in the opening direction is configured so that the elastic member 62 has a curved cross-sectional shape that is convex toward the outer surface of the outer sheet 18. It is configured by having 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 opened stably.

Further, since the elastic member 62 has a curved cross-sectional shape, it has higher deformation rigidity than a flat plate shape. Therefore, until it begins to bend, it has sufficient shape stability and resistance, but the ease with which the opening portion 12 opens is adjusted by adjusting the deformation rigidity of the elastic member depending on the cross-sectional shape of the elastic member. You can also do that. Note that by partially reducing the length in the vertical direction in the middle part of the elastic member 62 or forming a lightening hole in the middle part, the elastic member 62 can be easily bent at the middle part, and the elastic The opening operation force required before the member 62 starts to bend can also be set small.

Moreover, when the opening operation force is applied, in addition to bending at the intermediate portion when opening the opening portion 12, a change in the cross-sectional shape at the bend occurs. More specifically, the cross-sectional shape of the elastic member 62 changes so that the curvature becomes smaller at the bent portion. As a result, when the elastic member 46 is deformed by a sufficiently large opening operation force, the rigidity of the elastic member 62 at the deformed portion becomes smaller due to the change in the 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 open state of the opening portion 12 can be stably maintained.

FIG. 6 shows an elastic member 70 constituting an enteral nutrition bag as a 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 the front and back sides are interconnected by a folded portion 74.

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

The folded 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 and 72 by elastic deformation of the folded portion 74. It is considered possible. It is desirable that the ends of the pair of insertion pieces 72, 72 on the opposite side from the folded portion 74 are separated from each other in the initial shape of the elastic member 70 on which no external force is applied. More preferably, in the initial shape, the pair of insertion pieces 72, 72 are entirely spaced apart from each other and positioned opposite to each other. Note that the ends of the pair of insertion pieces 72, 72 on the side opposite to the folded part 74 may be in contact with each other in the initial shape, and may be separated from each other by insertion into the bag-shaped part, which will be described later.

For example, by processing a longitudinal flat plate so that it is folded back in the thickness direction at a portion in the length direction, the elastic member 70 that integrally includes the pair of insertion pieces 72, 72 and the folded portion 74 can be obtained. . Of course, the elastic member 70 may be obtained by forming the pair of insertion pieces 72, 72 and the folded portion 74 separately and combining them.

When the pair of insertion pieces 72, 72 are 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 front and back outer sheets 18, 18.

In the elastic member 70, since the pair of insertion pieces 72, 72 are connected to each other, there is a possibility that the operation becomes difficult when trying to insert the pair of insertion pieces 72, 72 at the same time. Therefore, in the bag-shaped portions 40, 40 of the enteral nutrition bag 80 shown in FIG. 7, the insertion opening 42a on the front side and the insertion opening 42b on the back side are provided at positions shifted from each other in the insertion direction of the elastic member 70. That is, the distance L1 from the edge of the outer sheet 18 to the front side insertion port 42a shown in FIG. 7(a), and the distance L1 from the edge of the outer sheet 18 to the back side insertion port 42b shown in FIG. 7(b). The distances L2 are different from each other, and in this embodiment, L1<L2.

Thereby, after inserting one insertion piece 72 of the elastic member 70 into the insertion opening 42a on the front side, the other insertion piece 72 can be inserted into the insertion opening 42b on the back side. Therefore, the pair of insertion pieces 72, 72 can be easily inserted into the front and back bag-shaped parts 40, 40, and the work of attaching the elastic member 70 to the outer sheets 18, 18 can be facilitated.

If the elastic member 70 having such a structure is adopted, the opening operation force input to the folded portion 74 will act as a moment on the pair of insertion pieces 72, 72, and the pair of insertion pieces 72, 72 will each The outer sheet 18 is deformed so as to be convex toward the outer surface side. Thereby, the opening portion 12 is brought into an open state. In this way, the deformation auxiliary mechanism of the present embodiment has a structure in which the elastic member 70 has a pair of insertion pieces 72, 72 connected to each other by the folded part 74, and the elastic member 70 has a continuous structure in which the elastic member 70 is folded back at one end. It is made up of a structure.

In FIG. 7, for ease of understanding, the folded portion 74 of the elastic member 70 is exposed from the bag-shaped portions 40, 40 and is arranged so as to be visible from the outside, but the elastic member 70 is not easily visible from the outside. It may be set in According to this, substantially the entire part visible from the outside is composed of the outer sheets 18, 18, and the appearance of the enteral nutrition bag 80 can be improved. For example, by forming the insertion ports 42a and 42b of the elastic member 70 not in the outer sheets 18 and 18 but in an inner sheet (not shown) that is superimposed on the inner surface of the outer sheets 18 and 18, the elastic member 70 can be seen from the outside. It is possible to make it more difficult.

Note that, for example, even if the distance from the edge of the outer sheet 18 to the insertion port 42a on the front side is the same as the distance from the edge of the outer sheet 18 to the insertion port 42b on the back side, one side of the elastic member 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 insertion openings 42a, 42b.

Moreover, 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 insertion ports 42a, 42b at the same time.

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

Further, in the peripheral wall portion of the bag-like portion 40, the front inner sheet 38a extends further to the open end 32 side (the right side in FIG. 8) than the front outer sheet 18a, and the front inner sheet 38a has a front insertion opening. The first guide surface 94 is configured by the end portion closer to the open end 32 than 92a. In addition, in the peripheral wall portion of the bag-shaped portion 40, the back side outer sheet 18b extends beyond the back side inner sheet 38b to the open end 32 side (right side in FIG. 8), and the back side outer sheet 18b has a back side insertion opening. The second guide surface 96 is configured by the end closer to the open end 32 than 92b.

When inserting the pair of insertion pieces 72, 72 of the elastic member 70 into the front and back insertion ports 92a, 92b, one insertion piece 72 is pressed against the first guide surface 94, as shown in FIG. 8(b). At the same time, it is possible to press the other insertion piece 72 against the second guide surface 96. As a result, one insertion piece 72 is inserted into the front side insertion port 92a along the first guide surface 94, while the other insertion piece 72 is inserted into the back side insertion port 92b along the second guide surface 96. be able to.

Note that on the side closer to the open end 32 than the first and second guide surfaces 94 and 96, a first insertion assisting surface 98 is formed by the outer surface (lower surface in FIG. 8) of the outer sheet 18a on the front side, and A second insertion assisting surface 99 is constituted by the inner surface (lower surface in FIG. 8) of the inner sheet 38b. Then, one insertion piece 72 of the elastic member 70 slides while contacting the first insertion assisting surface 98, thereby being guided to the first guide surface 94, and the other insertion piece 72 of the elastic member 70 slides while contacting the first insertion assisting surface 98. By sliding in contact with the insertion assisting surface 99, it 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 insertion ports 92a, 92b.

Further, as in the elastic member 100 shown in FIG. 9, the outer surface of the folded portion 102 can be used as a pressing surface 104 as an action surface to which an opening operation force is input. Like the elastic member 70, the elastic member 100 includes a pair of insertion pieces 72, 72 and a folded part 102 that connects the pair of insertion pieces 72, 72 to each other at one end, and partially It is said to be a continuous tong-shaped structure that is folded back. Furthermore, a fold line 106 is formed at the connection portion between the pair of insertion pieces 72, 72 and the folded portion 102. The fold line 106 is not necessarily limited to a rectangular ridge line, but may be a bent ridge line.

The folded portion 102 of the elastic member 100 has a flat plate shape or a curved cross-sectional shape concave toward the outside. As a result, the folded portion 102 is provided with a flat or concave pressing surface 104 on the opposite side to the direction in which the pair of insertion pieces 72, 72 extend. By providing the pressing surface 104 on the folded portion 102 in this way, when applying an opening operation force to the elastic member 100 with your fingers, you can stably apply the opening operation force by pressing the surface (pressing surface 104) with your 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 opposite to the surfaces 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 part 102 both have a curved cross-sectional shape, and the curved direction of the pair of insertion pieces 72, 72 and the curved direction of the folded part 102 are opposite to each other. This makes it easy for the pair of insertion pieces 72, 72 to deform to become convex outward in the thickness direction when an opening operation force is input. Therefore, it is possible to stabilize the deformation of the pair of insertion pieces 72, 72, and to ensure the deformation rigidity of the folded portion 102 against the action of the opening operation force.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited by the specific description. For example, the shape of the elastic member is not particularly limited. For example, in FIG. 6, the elastic member 70 has a structure in which only one end of the pair of insertion pieces 72, 72 is continuous with the folded part 74; It may be a continuous annular structure connected by. In addition, when the elastic 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 elastic member on which no external force is applied.

The elastic member is not limited to one that extends with a constant cross-sectional shape, and the cross-sectional shape may change partially or entirely. Specifically, for example, the vertical dimension may be partially made small or large, and in an elastic member having a curved cross-sectional shape as shown in FIG. 5, a partially non-curved cross-sectional shape, That is, a flat plate-like portion may be provided. By partially changing the cross-sectional shape of the elastic member in this way, it is also possible to control the curved form of the elastic member under the action of the opening operation force.

The elastic member 46 is not necessarily limited to a structure in which it is attached to the outer sheet 18 by being inserted into the bag-shaped portion 40, but may be attached to the outer sheet 18 by, for example, being fixed to the outer sheet 18 by means of adhesive or the like. In this case, since the bag-shaped portion 40 is not necessary, there is no need 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 embodiment described above, the bag-shaped portion 40 in which one end in the width direction of the outer sheet 18 is open and the other end is sealed is used as an example of the storage portion. structure. Specifically, for example, the accommodating portion may be configured by a cylindrical portion whose both ends are open in the width direction of the outer sheet 18. Further, the opening of the accommodating portion is not necessarily limited to one formed at the end in the width direction of the outer sheet 18. For example, the opening of the accommodating portion may be provided on the upper side, and the elastic member may be inserted from above through the opening. It is okay to be able to do so. Further, the circumferential wall of the storage portion is not necessarily limited to a continuous cylindrical shape over the entirety. For example, the outer sheet 18 and the inner sheet 38 may be connected to each other in the fixed portion 36 in a plurality of ways in the width direction of the outer sheet 18. It may be partially fixed at certain points.

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

Furthermore, although the accommodating portion in the embodiment described above is a bag-shaped portion 40 that has a substantially constant cross-sectional shape and extends in the width direction of the outer sheet 18, the accommodating portion has a cross-sectional shape that is generally constant in the width direction of the outer sheet 18. It may change completely or partially. Specifically, for example, the accommodating portion may gradually increase in vertical dimension toward the insertion port 42. According to this, a large opening size is ensured in the insertion port 42, making it easy to insert the elastic member 46, and the elastic member 46 is positioned in the vertical direction in a portion with a small vertical dimension away from the insertion port 42. .

The through hole 48 may be, for example, a long hole into which four fingers other than the thumb can be inserted. Further, the through hole 48 of the embodiment described above is a finger insertion hole for inserting a finger when opening the opening portion 12, and a finger insertion hole for hooking on a hanging hook of a stand when delivering a liquid into a patient's body. It is also possible to provide a through hole that is used only for either purpose. In this case, the finger insertion hole and the latching hole may be provided independently. Note that the insertion hole into which a finger is inserted to support the enteral nutrition bag 10 when injecting a liquid may be provided at a position where the finger can be inserted while opening the opening portion 12; It is also possible to provide a protrusion on the upper end and form an insertion hole in the protrusion.

Finger insertion holes may be formed on both sides of the outer sheet 18 in the width direction of the attachment portion of the elastic member 46, and the opening operation force may be applied with the fingers inserted into each hole. Specifically, for example, by providing a finger insertion hole into which the thumb is inserted on one side in the width direction of the outer sheet 18, and providing an elongated finger insertion hole into which the other four fingers are inserted on the other side. , it becomes easier to grasp the opening portion 12 of the enteral feeding bag 10. This makes it easier to support the enteral nutrition bag 10 that has become heavy due to containing the liquid, and allows the opening operation force to be applied from a position close to the elastic member 46 to efficiently deform the elastic member 46. You can also do it.

Furthermore, for example, if the outer sheets 18, 18 are partially reduced in width direction below the portion where the elastic member 46 is disposed, it becomes easier for the operator to grasp the enteral feeding bag. At the same time, the large width portion catches the hand, making it easier to support the enteral nutrition bag. Furthermore, for example, it is also possible to apply an opening operation force to the opening portion 12 using the thumb and forefinger while grasping the narrow portion of the enteral nutrition bag with the entire hand.

The insertion holes for the fingers that allow the operator to easily support the enteral nutrition bag 10 containing the liquid with their hands do not necessarily have to be in the form of the through-holes 48 in the above embodiment, which are formed through the outer sheet 18. Without limitation, by fixing a strip to the outside of the outer sheet 18 in the width direction, a finger insertion hole can be formed between the outer sheet 18 and the strip.

Further, 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, by supporting the enteral nutrition bag 10 with the hand passed through the support hole, the operator can apply an opening operation force to the opening portion 12 while supporting the enteral nutrition bag 10 with the band-shaped body. I can do it.

The chuck-shaped sealing portion 26 is not essential, and may be omitted, for example, if the liquid does not leak. It is also possible to provide the elastic member 46 below the chuck-shaped sealing part 26 (on the accommodation area 24 side), but preferably, the elastic member 46 is provided above the chuck-shaped sealing part 26. provided.

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

10, 60, 80, 90: Enteral feeding bag, 12: Opening portion, 18: Outer sheet (sheet), 24: Accommodation area, 32: Open end, 40: Bag-shaped portion, 42, 92: Inlet, 44 : Guide surface, 46, 62, 70, 100: Elastic member, 74, 102: Folded part, 94: First guide surface, 96: Second guide surface, 104: Pressing surface (action surface), 106: Broken line

Claims (1)

In an enteral nutrition bag in which a liquid storage area having an opening at the top is formed between the stacked surfaces of the front and back sheets,
An elastic member extending in the width direction of the sheet on at least one of the front and back sheets is attached to the opening portion of the storage area, and an elastic member extending in the width direction of the sheet in the opening portion is moved close to each other. The enteral nutrition bag is provided with a deformation assisting mechanism that assists deformation of the opening portion of the elastic member in the opening direction when an opening operation force is applied to press the opening in the opening direction.

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