JP7625261B2 - Auxiliary equipment for multi-component liquid composition preparation kit - Google Patents

Description

The present invention relates to an auxiliary tool for assisting in the use of a kit for preparing a multi-component liquid composition such as a dental adhesive.

Composite resins and composite resin-type resin cement dental materials (hereinafter sometimes abbreviated as "CR, etc.") that are commonly used in dental treatment have almost no adhesiveness to tooth structure by themselves. For this reason, when performing treatment (tooth restoration), in order to firmly bond the hardened material such as CR to the tooth structure, it is necessary to apply a dental adhesive (also called a bonding material) to the tooth surface using an applicator before filling or pressing the CR, etc.

Dental adhesives generally contain polymerizable monomers, including polymerizable monomers having an acidic group, and a polymerization initiator for polymerizing and curing the polymerizable monomers. As the polymerization initiator, a chemical polymerization initiator that functions without the need for light irradiation or heating may be used. The chemical polymerization initiator contains a combination of multiple components, such as a reducing agent and an oxidizing agent, that can react immediately upon contact, and therefore must be stored in two or more portions. For this reason, dental adhesives using chemical polymerization initiators are generally prepared by appropriately dividing the polymerizable monomer component in accordance with the division of the chemical polymerization initiator component, mixing the two, and storing them as multiple liquid compositions, and mixing these divided liquid compositions when used to prepare the dental adhesive. In addition, kits (in the present invention, a kit means a product in which two or more agents are combined into one product for the purpose of reducing the burden during preparation and preventing contamination and foreign matter from entering) and jigs for facilitating such storage, preparation, and application (using an applicator) are also known.

For example, Patent Document 1 describes such a kit as "a synthetic resin package containing at least one bag that contains dental liquid and that, when pressed, opens one edge and allows the dental liquid to flow out through the opened edge, both side edges and the bottom edge are entirely closed, and an applicator insertion section and a bag storage section that are adjacent to each other in the lateral direction are defined, the upper edge is at least partially closed at a portion corresponding to the bag storage section, but is open at a portion corresponding to the applicator insertion section, the bag is positioned in the bag storage section with the one edge facing downward, and by pressing the bag through the package, the one edge of the bag is opened and the dental liquid flows from inside the bag through the one edge to the lower part of the bag storage section and flows to the lower part of the applicator insertion section, and the dental liquid can be applied to the tip of the applicator by inserting the applicator into the applicator insertion section through the open upper edge."

Patent Document 2 also describes a kit for storing components of a multi-component liquid composition that exhibits a specified function in two or more liquid formulations and for preparing the multi-component liquid composition by mixing the packaged liquid formulations at the time of use, the kit comprising: a composite liquid packaging body having a plurality of liquid storage sections and a connecting section, all of the plurality of liquid storage sections being connected to each other at the connecting sections to form an integrated body; and an outer bag that fixes the composite liquid packaging body therein and hermetically houses the composite liquid packaging body, the outer bag having a liquid collection space that is capable of holding all of the liquid that flows out when a pressing force is applied to the liquid held in the liquid storage section of the composite liquid packaging body fixed and housed therein, causing the liquid to flow out from one end of the liquid storage section, without causing the liquid to come into contact with the composite liquid packaging body. According to Patent Document 2, the use of this kit can solve the problem with the synthetic resin packaging described in Patent Document 1, namely, the problem that when pressing the bag to cause liquid to flow out to the bottom of the packaging, liquid may accidentally splash out of the packaging due to a portion of the other edge not being closed.

Furthermore, Patent Document 3 describes a synthetic resin container used when applying dental liquid to the tip of an applicator to an affected area, the container having a bottom wall and a side wall extending upward from the bottom wall that defines a space with an open top, the space having a package storage section and an applicator insertion section that are positioned adjacent to each other in the lateral direction, a package containing dental liquid is stored in the package storage section, and a compressive force is applied to the package by pressing the side wall, thereby discharging the dental liquid contained in the package into the space, and an applicator can be inserted into the applicator insertion section to apply dental liquid to the tip of the applicator.

International Publication No. 2016/104406 International Publication No. 2020/158238 JP 2016-055039 A

The kit described in Patent Document 2 can be used as follows if the weakened line 44 is formed as shown in Figure 1. That is, first, the outer bag 3 is pressed by pinching the front and back walls of the outer bag 3 with two fingers to allow the liquid agent to flow out of the composite liquid agent package into the liquid storage space, and then the outer bag 3 is broken along the weakened line 44 from the notch 46 to remove the upper part, forming an applicator insertion opening 48. Then, the outer bag 3 is held with one hand and the applicator 50 is held with the other hand, and the applicator 50 is inserted into the outer bag 3 through the applicator insertion opening 48 to deposit the liquid agent stored in the liquid holding portion 54, and then the dental adhesive composition can be applied to the required area of the patient's treated tooth by pulling it out. Thus, the above kit is convenient because it not only saves the effort of dispensing, but also eliminates the risk of liquid spillage. However, the "flowing operation" of pressing with a finger to make the liquid flow out of the composite liquid packaging can be time-consuming due to differences in the way force is applied or the part pressed is not aligned, and it can be inconvenient because both hands are occupied when applying the liquid.

On the other hand, if the composite liquid agent package described in Patent Document 2 is used as is (without being packaged in an outer bag to make a kit) and is housed in the package storage section of the container disclosed in Patent Document 3, and the side wall of the container is pressed, the outflow operation can be performed relatively easily, and furthermore, the dental adhesive can be applied (spread) with one hand. However, in this case, since the composite liquid agent package is pressed with the entire back surface of the side wall of the container, the pressing force is dispersed, and the outflow operation can be time-consuming. In addition, the remaining dental adhesive adheres after use, making it impossible to reuse the container.

The present invention aims to provide an auxiliary device that utilizes the advantages of the kit described in Patent Document 2 while allowing for easy and reliable pouring operations and application operations to be performed with one hand, and that can be used repeatedly.

The present invention solves the above-mentioned problems, and a first embodiment of the present invention comprises two or more bags of substantially the same shape, each having one end and the other end; and an outer bag consisting of a flat bag having one end and the other end and having a substantially identical rectangular shape with two main surfaces, front and back, and having a bag accommodation space and a liquid storage space therein, wherein each of the two or more bags holds the components of a multi -component liquid composition in two or more liquid agents, and is configured so that the liquid agents will flow out from one end by applying a pressing force to the liquid agents held inside each bag, and the two main surfaces, front and back, of the outer bag, which are the one main surface and the other main surface facing each other, have opposing surfaces. a pressurized area is defined at a predetermined position corresponding to the one end of each of the two or more bags, one end and the other end of each of the two or more bags are respectively directed toward the one end side and the other end side of the outer bag, and the other ends of all of the bags are overlapped and sandwiched between the other end on the one main surface side and the other end on the other main surface side, so that the liquid agent flows out from one end of all of the bags by pressing the pressurized area of the outer bag, and the liquid collecting space is a space that can hold the liquid agent flowing out from the two or more bags without contacting the two or more bags,
a holder portion including: a support portion having a receiving surface and a first clamping portion; and an outer bag holding mechanism capable of detachably holding the outer bag at a predetermined position in an upright state with one end of the outer bag facing downward; and
A pressing arm portion connected to the holder portion and rotatable around the vicinity of the connecting portion;
When the auxiliary device is self-supporting on a horizontal surface and the outer bag is held at a predetermined position in the holder section, the direction in which one main surface of the outer bag faces is defined as the forward direction, the direction parallel to the horizontal plane along which the bottom side of the rectangle forming the shape of the one main surface extends is defined as the horizontal axis direction, and the vertical direction is defined as the vertical axis direction.
In the support portion, the receiving surface is a plane having an area capable of pressing at least a major portion of a pressed area on the other main surface of the outer bag held at a predetermined position of the holder portion, and is disposed so as to face the pressed area, and the first clamping portion is disposed on the rear side and below,
the pressing arm portion includes: an arm body having a second clamping portion and a pressing force application surface; and a connecting mechanism having a hinge structure that is disposed in one end region of the arm body, connects the arm body to the top of the support portion or its periphery, and allows the arm body to rotate at least a predetermined angle around an axis in the horizontal axis direction near the connecting portion as a rotation axis;
When the angle on the front side between the longitudinal direction of the arm body and the vertical direction passing through the rotation axis is defined as an interior angle, and the direction that is forward when the interior angle is 0° is defined as the surface side of the arm body,
the second clamping portion is disposed on the other end of the arm body or on the surface side thereof in the vicinity thereof, the pressing force application surface is a flat surface having an area capable of pressing at least a major portion of a pressed area on one main surface of an outer bag held at a predetermined position in the holder portion, and the pressing force application surface is disposed on the back side of the arm body at a position capable of abutting against the pressed area and pressing the pressed area when the arm body is rotated in a direction that reduces the interior angle between the first clamping portion and the second clamping portion.
The present invention is an auxiliary tool for a multi-component liquid composition preparation kit.

The above-mentioned auxiliary tool for a multi-component liquid composition preparation kit (hereinafter also referred to as the "auxiliary tool of the present invention") preferably has a base part for fixing the holder part to which the pressing arm part is connected at the top and allowing the auxiliary tool to stand on its own with the height direction of the holder part perpendicular or approximately perpendicular to the horizontal plane.

In the auxiliary device of the present invention , the outer bag holding mechanism is preferably configured so that the upper groove rail and the lower groove rail are arranged so that their groove openings face each other and extend in the horizontal direction in front of the support portion with a predetermined distance in the vertical direction, so that when the outer bag is upright, the other end and one end of the outer bag can be inserted into the horizontal groove openings exposed on the end faces of one end of the upper groove rail and the lower groove rail, respectively, allowing the outer bag to slide freely back and forth within the grooves, and a stopper is provided in the groove on the other end side of at least one of the groove rails to hold the outer bag in a predetermined position.

It is also preferable that the first clamping portion and the second clamping portion can be clamped with fingers and pressed against each other to rotate the arm body and apply a pressing force, and further, in the above-mentioned preferred embodiment, the distance between the bottom surfaces of the grooves of the upper groove rail and the lower groove rail in the outer bag holding mechanism is smoothly reduced from one end side to the other end side so that at one end face, the distance is equal to or greater than the length equivalent to the height of the outer bag, and at the other end side, the distance is shorter than that length, and a stress is generated in the outer bag held in a predetermined position by the outer bag holding mechanism such that the distance in the fore-and-aft direction between one main surface and the other main surface is increased.

In addition, in the auxiliary tool of the present invention, in the multi-component liquid composition preparation kit, the two or more bags are flat bags, the width of the flat bag constituting the outer bag is longer than the width of the bag body by a predetermined length, the two or more bags are fixed inside the outer bag toward one side end of the outer bag, and an applicator insertion space adjacent to the bag body storage space is provided at the other end side of the liquid pool space at the other end side of the outer bag, and a weakened line is formed on one main surface and the other main surface of the outer bag to form an applicator insertion opening by cutting and removing a removal part consisting of a part of the other end side of the area covering the applicator insertion space, and it is particularly preferable that the support part, the holder part, and the pressing arm part are configured so that when the outer bag is held at a predetermined position in the holder part, the weakened line formed on the outer bag is exposed, and the removal part can be cut along the weakened line while the outer bag is held at the predetermined position.

The auxiliary tool of the present invention is particularly suitable as an auxiliary tool for a kit for preparing a dental adhesive using a chemical polymerization initiator.

The auxiliary device of the present invention makes it possible to easily and reliably carry out the outflow operation when using a multi-component liquid composition preparation kit, such as the kit described in Patent Document 2, in which multiple bags, the liquid contained inside of which flows out when pressed, are held inside a sealed outer bag, and further makes it possible not only to carry out the application operation with one hand, but also to use the device repeatedly.

This figure is a schematic diagram showing the kit disclosed in Patent Document 2 and how to use the kit, and corresponds to Figures 6 and 10 of Patent Document 2. The figure shows (A) a perspective view and (B) a XX' cross-sectional view of a multi-component liquid composition preparation kit suitable for use with the auxiliary device of the present invention. The figure shows (A) a side view and (B) a front view of a representative auxiliary device of the present invention. In the front view, the pressing arm part is shown by a dotted line in order to make it easier to understand the holding state of the multi-component liquid composition preparation kit (outer bag).

The multi-component liquid composition preparation kit (hereinafter also referred to as "this kit") for which the auxiliary device of the present invention is used and the auxiliary device of the present invention will be described in detail below with reference to the drawings.

In this specification, unless otherwise specified, the notation "x~y" using the numerical values x and y means "greater than or equal to x and less than or equal to y." In such notations, when a unit is added only to the numerical value y, the unit is also applied to the numerical value x. In addition, in this specification, the term "(meth)acrylate" means both "acrylate" and "methacrylate," and the term "(meth)acryloyl" means both "acryloyl" and "methacryloyl."

1. The Present Kit The multi-component liquid composition preparation kit (the present kit) for which the auxiliary device of the present invention is used is not particularly different from the kit disclosed in Patent Document 2. Hereinafter, the present kit 10 will be described with reference to Figures 1 and 2.

2, the kit 10 includes two or more bags 20 of substantially the same shape, each having one end 21 and the other end 22; and an outer bag 30 consisting of a flat bag 33 having one end 31 and the other end 32, and having two substantially identical rectangular shapes on the front and back main surfaces 34. The outer bag 30 has a bag accommodation space 36 and a liquid storage space 37 inside, and the two or more bags 20 are fixed and airtightly accommodated in the bag accommodation space 36. A liquid agent 23 is enclosed and held inside each of the two or more bags 20. The liquid agent 23 is enclosed in the bag by applying a pressing force to the liquid agent 23 held inside each bag, causing the liquid agent 23 to flow out from the one end 21. Regarding the liquid agent 23, each liquid agent 23 held inside each bag is a multi-component liquid composition having a predetermined function, divided into two or more components (specifically, the number of bags), and the multi-component liquid composition can be prepared by flowing all the liquid agents 23 held in the two or more bags into the liquid reservoir space 37 and mixing them. The liquid reservoir space 37 is a space that can hold the (all) liquid agent 23 that flows out without contacting the two or more bags 20 when a pressing force is applied to the liquid agent 23 held inside the two or more bags 20 contained in the bag accommodation space 36 by pressing the outer bag 30 to cause the liquid agent 23 to flow out of (all) the bags 20. The (all) liquid agent 23 that flows out is stored in the liquid reservoir space 37, so that the preparation of the multi-component liquid composition and the application operation described below can be performed without being hindered by the bags 20.

In the present kit 10 shown in FIG. 2, the two main surfaces 34 of the outer bag 30, that is, the one main surface 34a and the other main surface 34b facing each other, are defined with pressurized areas 35a, b at predetermined positions corresponding to each other. The pressurized areas 35 (a, b) are areas determined based on the shape and size of the two or more bags 20 (flat bags 24) and the amount of liquid 23 held therein, as well as the position of the bag storage space 36 (or the fixed position of the two or more bags 20), and are defined as areas where the liquid 23 can be reliably and efficiently flowed out of one end (one end) 21 of the bag 20 by pressing the areas on the outer bag 30. Therefore, the pressurized areas 35 (a, b) are defined at substantially the same positions on the front and back main surfaces 34 of the outer bag 30 (i.e., the one main surface 34a and the other main surface side 34b). In FIG. 2(A), the area printed with "Push here" corresponds to the pressed area 35.

In the present kit 10 shown in FIG. 2, each of the two or more bags 20 is a flat bag 24 having a substantially identical rectangular shape, and the two or more bags 20 (flat bags 24) are arranged so that the liquid agent 23 flows out from one end 21 of all the bags 20 (flat bags 24) by pressing the pressed areas 35a, b of the outer bag 30, with the one end 21 and the other end 22 facing the one end 31 side and the other end 32 side of the outer bag 30, respectively, and the other end 22 of all the bags 20 (flat bags 24) is overlapped and sandwiched between the other end 32a on the one main surface 34a side and the other end 32b on the other main surface side 34b, and fixed and airtightly contained in the bag containing space 36.

The sizes of the bag 20 and the outer bag 30 may be appropriately determined depending on the amount of the liquid agent 23 to be held, but when the multi-component liquid composition is a dental adhesive, the amount of the liquid agent 23 held in each bag 20 is usually about 0.03 to 0.1 ml because the multi-component liquid composition is disposable, and the size of the bag 20 (flat bag 24) is about 16 to 40 mm in length and about 5 to 15 mm in width. The size of the outer bag 30 is about 28 to 72 mm in length and about 12 to 36 mm in width, and the area of the pressed region 35 is about 240 to 400 ^mm2 .

The width of the flat bag 33 constituting the outer bag 30 is longer than the width of the bag body 20 (flat bag 24) by a predetermined length, and by moving the two or more bag bodies 20 toward one side end 31 toward the inside of the outer bag and fixing them, an applicator insertion space 38 adjacent to the bag body accommodation space 36 is provided on the other end side of the liquid pool space 37 of the outer bag 30. A weakened line WL is formed on one main surface 34a and the other main surface 34b of the outer bag 30 to form an applicator insertion opening (not shown) by cutting out and removing a removal portion 39 consisting of a part of the other end side of the area covering the applicator insertion space 38.
In the present kit 10 shown in Fig. 2, the fixing positions of two or more bags 20 or the position of the bag accommodation space 36 is set to be approximately the center of the outer bag 30, and when viewed from the one main surface 34a side, it corresponds to the multi-component liquid composition preparation kit 1 shown in Fig. 1. That is, each package, one end, the other end, and the liquid in the composite liquid agent package 2 in Fig. 1 respectively correspond to the bag 20 (flat bag 24), one end, the other end, and the liquid agent 23 in the present kit 10, and the composite liquid agent package 2 corresponds to the other end 22 of all the bags 20 in the present kit 10 stacked and integrated. Also, the outer bag 3, the lower end seal part (one end) 40, the upper end seal part (other end) 42, and the weakened line 44 in Fig. 1 respectively correspond to the outer bag 30 (flat bag 33), one end 31, the other end 32, and the weakened line WL in the present kit 10 in Fig. 2.

A typical example of the multi-component liquid composition is a so-called two-liquid mixed dental adhesive that contains polymerizable monomers including an acidic group-containing polymerizable monomer and a polymerizable monomer that does not have an acidic group, a chemical polymerization initiator, and a water-soluble organic solvent and/or water as the main components. Here, the following are suitable components that can be used in the two-liquid mixed dental adhesive.

That is, examples of the acidic group-containing polymerizable monomer include 2-(meth)acryloyloxyethyl dihydrogen phosphate, 10-(meth)acryloyloxydecyl dihydrogen phosphate, di[2-(meth)acryloyloxyethyl]hydrogen phosphate, di[10-(meth)acryloyloxydecyl]hydrogen phosphate, 4-(meth)acryloxyethyl trimellitic acid, 11-(meth)acryloyloxy-1,1-undecanedicarboxylic acid, 1,4-di(meth)acryloyloxypyrrolidone, 1,2-di(meth)acryloyloxyethyl dihydrogen phosphate, 1,3-di(meth)acryloyloxyethyl dihydrogen phosphate, 1,4-di(meth)acryloyloxyethyl dihydrogen phosphate, 1,5-di(meth)acryloyloxyethyl dihydrogen phosphate, 1,6-di(meth)acryloyloxyethyl dihydrogen phosphate, 1,7-di(meth)acryloyloxyethyl dihydrogen phosphate, 1,8-di(meth)acryloyloxyethyl dihydrogen phosphate, 1,9-di(meth)acryloyloxyethyl dihydrogen phosphate, 1,1-di(meth)acryloyloxyethyl dihydrogen phosphate, 1,2-di(meth)acryloyloxyethyl dihydrogen phosphate, 1,3-di(meth)acryloyloxyethyl dihydrogen phosphate, 1,4-di(meth)acryloyloxyethyl dihydrogen phosphate, 1,5-di(meth)acryloyloxyethyl dihydrogen phosphate, 1,6-di(meth)acryloyloxyethyl dihydrogen phosphate, 1,7-di(meth)acryloyloxyethyl dihydrogen phosphate, 1,8-di(meth)acryloyloxyethyl dihydrogen phosphate, 1,9-di(meth)acryloyloxyethyl dihydrogen phosphate, Compounds that have at least one acidic group, such as a phosphoric acid group, a carboxy group, a sulfonic acid group, or a phosphonic acid group, and at least one polymerizable unsaturated group in one molecule, such as mellitic acid, 2-(meth)acryloyloxyethyl maleic acid, 2-(meth)acryloyloxyethyl phthalic acid, 2-(meth)acryloyloxyethyl hexahydrophthalic acid, 2-methacrylamide-2-methylpropanesulfonic acid, 2-acrylamide-2-methylpropanesulfonic acid, p-vinylbenzenesulfonic acid, and vinylsulfonic acid, can be preferably used.

Examples of polymerizable monomers that do not have an acidic group include 2-hydroxyethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, glycerol di(meth)acrylate, 2,2'-bis{4-[3-(meth)acryloyloxy-2-hydroxypropoxy]phenyl}propane, 2,2'-bis[4-(meth)acryloyloxyphenyl]propane, 2,2'-bis[4-(meth)acryloyloxypolyethoxyphenyl]propane, 2,2'-bis[4-(meth)acryloyloxydiethoxyphenyl]propane, 2,2'-bis[4-(meth)acryloyloxytetraeth ... Bis[4-(meth)acryloyloxypentaethoxyphenyl]propane, 2,2'-bis[4-(meth)acryloyloxydipropoxyphenyl]propane, 2,2'-bis[4-(meth)acryloyloxyethoxyethoxyphenyl]propane, 2-[4-(meth)acryloyloxydiethoxyphenyl]-2-[4-(meth)acryloyloxytriethoxyphenyl]propane, 2-[4-(meth)acryloyloxydipropoxyphenyl]-2-[4-(meth)acryloyloxytriethoxyphenyl]propane, 2,2-bis[4-(meth)acryloyloxypropoxyphenyl]propane, etc. can be preferably used.

Suitable water-soluble organic solvents include acetone, methanol, ethanol, n-propanol, isopropyl alcohol, and methyl ethyl ketone.

As the chemical polymerization initiator, an appropriate combination of an oxidizing agent, a reducing agent, and a polymerization accelerator can be suitably used. As the oxidizing agent, organic peroxides such as benzoyl peroxide, parachlorobenzoyl peroxide, 2,4-dichlorobenzoyl peroxide, acetyl peroxide, lauroyl peroxide, tertiary butyl peroxide, cumene hydroperoxide, 2,5-dimethylhexane, 2,5-dihydroperoxide, methyl ethyl ketone peroxide, and tertiary butyl peroxybenzoate, and azo compounds such as azobisisobutyronitrile, methyl azobisisobutyrate, and azobiscyanovaleric acid can be suitably used. As reducing agents, amine compounds such as N,N'-dimethyl-p-toluidine, N,N'-dimethylaniline, N'-β-hydroxyethyl-aniline, N,N'-di(β-hydroxyethyl)-aniline, N,N'-di(β-hydroxyethyl)-p-toluidine, N-methyl-aniline, and N-methyl-p-toluidine can be preferably used. As polymerization accelerators, vanadium compounds, copper compounds, sulfinates, borate compounds, thiourea compounds, and the like can be preferably used. Note that all chemical polymerization initiator systems are designed to function as initiators when all components are present, and the combination of each component when packaging is appropriately determined in consideration of storage stability according to the type of liquid and the specific compounds used. For example, borate, which is classified as a polymerization accelerator in the above, functions as a reducing agent under certain conditions, but can also be stored in the presence of an oxidizing agent in the absence of an acidic compound (unless the conditions are acidic).

From the standpoint of manufacturing efficiency of the kit 10, it is preferable that the other end portions 22 of all the bag bodies 20 (flat bags 24) be stacked and integrated in advance to form a composite liquid agent package. The above-mentioned composite liquid agent package can be suitably manufactured by a method including: (I) a step of preparing a plurality of individual packages for liquid agent storage, in which the liquid agent is airtightly and liquidtightly held inside a bag body made of a flat pillow bag having a lower end heat-sealed portion as one end (one end) and an upper end heat-sealed portion as the other end (other end) by vertical pillow packaging using a heat-sealable laminate film or heat-sealable laminate sheet including at least an inner layer made of a sealant material and an outer layer made of an exterior material; and (II) a joining step of overlapping all the other ends (other ends) of the plurality of individual packages for liquid agent storage prepared in the step of preparing the individual packages for liquid agent storage, and heating and pressurizing the overlapping region where all the other ends are overlapped, thereby extruding a portion of the sealant material constituting the inner layer in the overlapping region of each other end outward from the end of the outer layer of each other end, and fusing the extruded extended sealant material to each other.

The inner layer of the heat-sealable laminate film (or heat-sealable laminate sheet) is composed of a resin with high heat fusion (heat-sealing properties) that serves as a sealant material, for example, a mixture of a polymer alloy mainly composed of an ionomer of a copolymer of ethylene and methacrylic acid acrylate, and polyethylene, and the inner layer (sealant material layer) usually has a thickness of 10 to 100 μm, preferably 30 to 80 μm. The outer layer 12 is composed of a resin with low heat fusion (no heat-sealing properties), an inorganic material, or a composite of both, and depending on the liquid agent contained inside, a material that imparts functions such as oxygen gas shielding (oxygen gas impermeability) and ultraviolet ray shielding properties, a material that provides transparency that allows the presence of the contents to be confirmed, and a material that enhances the printability on the outer surface are appropriately selected for the purpose of improving the storage stability, etc., depending on the liquid agent contained inside. In addition, an intermediate layer can be provided between the inner layer and the outer layer to further enhance functionality.

The outer bag 30 is also a pillow flat bag made of a heat-sealable laminate film (or a heat-sealable laminate sheet) including at least an inner layer made of a sealant material and an outer layer made of an exterior material, and is made into a bag body by heat-welding (heat sealing) both side edges of the rectangular heat-sealable laminate film (or heat-sealable laminate sheet) to each other to form a back seal part to form a cylindrical shape, and heat-welding (heat sealing) one end (one end edge) and the other end (the other end edge) to each other. The heat-sealable laminate film (or heat-sealable laminate sheet) basically has the same structure as the heat-sealable laminate film that constitutes the bag body 20, and the same heat-sealing material is used as the heat-sealing material in the heat-sealable laminate film. However, since it is preferable that the outer bag 30 has transparency overall so that the position of the liquid agent that has flowed out due to pressure can be easily confirmed, it is preferable to use a film or sheet of an olefin polymer such as polyethylene, polypropylene, polybutylene, or a copolymer obtained by copolymerizing at least two or more types of olefin monomers selected from ethylene, propylene, butene, etc., as the exterior material that constitutes the outer layer.

In this kit 10, the outer bag 30 is sealed on all four sides to form a hermetically sealed state. At this time, air (atmosphere) is usually enclosed in the space between the outer bag 3 and the two or more bags 20. In order to apply a pressing force to the liquid agent held in the two or more bags 20 (flat bags 24) to facilitate the liquid agent flowing out of one end (one end) of each liquid agent storage section, it is preferable to adjust the amount of air enclosed in the space so that the volume of the space is 1 to 70%, particularly 5 to 40%, of the maximum volume of the space (the volume when the outer bag 30 is filled with as much air as possible under atmospheric pressure or under a slight pressure that does not damage the outer bag 30, minus the volume occupied by the two or more bags 20 contained therein).

When using the kit 10 of the present invention, first, the outer bag 30 is pressed, and a pressing force is applied to all of the liquid 23 filled in each of the two or more bags 20, which is then allowed to flow out and mixed in the liquid collection space 37 to prepare the dental adhesive, which is the desired liquid composition. Next, the outer bag 30 is broken from the notch along the weakened line WL, 38: the removal portion 39 above the weakened line WL of the film or sheet covering the applicator insertion space is removed to open the applicator insertion opening (this operation is also called the "applicator insertion opening formation operation"). From there, as shown in the right diagram of Figure 1, an applicator 50 having a long and thin rod-shaped body 52 and a liquid holding portion 54 arranged at its tip is inserted, and the liquid holding portion 54 is immersed in the dental adhesive and then pulled out to apply the dental adhesive to the required area of the patient's treated tooth, performing the application operation.

2. Auxiliary Tool of the Present Invention The auxiliary tool for the multi-component liquid composition preparation kit of the present invention will now be described with reference to FIG.

The auxiliary device 100 of the present invention shown in FIG. 3 is an example of a preferred form of the auxiliary device of the present invention, and includes a holder part 200 that can hold the outer bag 30 in a predetermined position in an upright state with one end part 31 of the outer bag 30 facing downward in a freely attachable and detachable manner; a pressing arm part 300 that is connected to the holder part 200 and can rotate around the vicinity of the connecting part; and a base part 400 that fixes the holder part 200 connected to the pressing arm part 300 to the upper part and makes the height direction of the holder part 200 perpendicular or approximately perpendicular to the horizontal plane so that the auxiliary device 100 stands on its own. By rotating the pressing arm part 300, the outer bag 30 held in a predetermined position of the holder part 200 is pressed, causing the liquid agent 23 to flow out into the liquid storage space 37.

The material constituting the auxiliary tool 100 of the present invention is usually resin or metal, but when the multi-component liquid composition preparation kit is a dental adhesive, its size is relatively small as described above, and therefore the auxiliary tool 100 of the present invention is also quite compact in size. Therefore, from the standpoint of cost and productivity, it is preferable to integrally mold it using a plastic resin such as polyethylene (PE), polypropylene (PP), polyoxymethylene (POM), polybutadiene terephthalate (PBT), acrylonitrile-butadiene-styrene copolymer synthetic resin (ABS resin), and polyamide (PA).

The auxiliary device 100 of the present invention can hold the outer bag 30 of the present kit 10 in a "predetermined position" in an upright state with one end 31 of the outer bag 30 facing downwards on the holder part 200 in a freely attachable and detachable manner, so that the dental adhesive (prepared with the present kit) can be applied with one hand using an applicator. The auxiliary device 100 of the present invention not only has the function of a so-called stand, but also has a major feature in that it can reliably apply a pressing force from both sides of the pressed area 35a and the pressed area 35b of the present kit 10 (outer bag 30) by holding the outer bag 30 in a "predetermined position" in the above-mentioned state and then rotating the pressing arm part 300. This feature makes it possible to perform the above-mentioned outflow operation simply and reliably. Furthermore, the prepared multi-component liquid composition such as a dental adhesive remains contained in the outer bag and does not come into direct contact with the auxiliary device 100 of the present invention, so the auxiliary device 100 of the present invention can be used repeatedly.

The holder section 200 and the pressing arm section 300 are connected, and the pressing arm section 300 can rotate around the vicinity of the connection section, so the relative positional relationship between the holder section 200 and the pressing arm section 300 is fixed. Therefore, the relative positional relationship between these and the outer bag 30 is determined by the holding position in the holder section 200. Therefore, the above "predetermined position" is synonymous with the predetermined position in the holder section 200.

In order to ensure that the auxiliary device 100 of the present invention can perform the above functions, the holder section 200 and the pressing arm section 300 preferably have a configuration as shown in FIG. 3. Hereinafter, the holder section 200 and the pressing arm section 300 of the auxiliary device 100 of the present invention will be described in FIG. 3, with the auxiliary tool 100 standing on its own on a horizontal surface and the outer bag 30 held at a predetermined position on the holder section 200, assuming that the direction in which the one main surface 34a (the main surface facing the pressing arm section 300) of the outer bag 30 faces (leftward in FIG. 3A) is the front direction, the direction in which the other main surface 34b (the main surface facing the support section 210) faces (rightward in FIG. 3A) is the rear direction, the direction parallel to the horizontal plane on which the lower side of the rectangle forming the shape of the one main surface 34a extends (left-right direction in FIG. 3B) is the horizontal axis direction, and the vertical direction is the vertical axis direction.

In the auxiliary device 100 of the present invention shown in FIG. 3, the holder part 200 has a support part 210 having a receiving surface 211 and a first clamping part 212; and an outer bag holding mechanism 220 that can hold the outer bag 30 in a predetermined position of the holder part 200 in a state where it is detachably held upright with one end part 31 of the outer bag 30 facing downward. The pressing arm part 300 has a connecting mechanism 310 for connecting with the holder part 200, and an arm body 320 having a second clamping part 321 and a pressing force application surface 322. The receiving surface 211 and the pressing force application surface 322 sandwich the pressed area 35a and the pressed area 35b of the kit 10 (outer bag 30), so that the kit 10 (outer bag 30) can be held by the outer bag holding mechanism 220 in a "predetermined position" where a pressing force can be reliably applied to the area.

That is, the receiving surface 211 of the support part 210 is a plane having an area capable of pressing at least a major portion of the pressed area 35b on the other main surface 34b of the outer bag 30 held in a predetermined position of the holder part 200, and is disposed so as to face the pressed area 35b.

The pressing force application surface 322 is a plane having an area capable of pressing at least a major portion of the pressed area 35a on one main surface 34a of the outer bag 30 held in a predetermined position on the holder section 200. It is disposed in a position that faces one main surface 34a of the outer bag 30 when the pressing arm section 300 is rotated.

To explain in more detail the pressing arm section 300 and the relationship between the rotation and the orientation of the pressing force application surface 322, the pressing arm section 300 has a connection mechanism 310 for connecting to the holder section 200, and an arm body 320 having a second clamping section 321 and a pressing force application surface 322. The connection mechanism 310 has a hinge structure 311 that is disposed in one end section 323 region of the arm body 320 and connects the arm body 320 to the top of the support section 210 or its periphery, and allows the arm body 320 to rotate at least a predetermined angle around an axis in the horizontal direction near the connection section as a rotation axis (R-Ax). Here, if the angle on the forward side formed by the length direction of the arm body 320 and the vertical direction passing through the rotation axis is defined as the interior angle (α), and the direction that is forward when the interior angle is 0° is defined as the front side of the arm body 320, the pressure load surface 322 will be located on the back side of the arm body 320.

The first clamping portion 212 and the second clamping portion 321 are intended to allow the discharge operation to be performed reliably with one hand, and specifically, they can be clamped and pressed with the fingers (for example, the first clamping portion 212 with the index finger and/or middle finger of the right hand, and the second clamping portion 321 with the thumb of the right hand) to rotate the arm body in a direction that reduces the interior angle (α) and apply a pressing force. For this reason, the first clamping portion 212 is disposed on the lower rear side of the support portion 210, and the second clamping portion 321 is disposed on the surface side of the other end portion 324 of the arm body 320 or in the vicinity thereof.

From the viewpoint of operability, the hinge structure in the connecting mechanism 310 is preferably a spring hinge or a hinge structure having a leaf spring function, which is adjusted so that the interior angle is maintained at a predetermined angle within a range of 10 to 35° in an unloaded state, and a hinge structure having a leaf spring function is particularly preferable because the structure is simple and can be molded as a single unit. For this reason, in the figure, a hinge structure having a leaf spring function is used, in which a part of the side wall of a cylinder made of plastic resin is cut out so that the cross section is C-shaped. When such a structure is used, the arm body 320 functions as a lever with the joint or its vicinity as a fulcrum, the second clamping portion 321 as a force point, and the pressing force load surface 322 as a point of action, so that even a person with little strength can easily and reliably perform the outflow operation.

In the auxiliary device 100 of the present invention, in order to be able to perform the applicator insertion opening forming operation and the application operation while the outer bag 30 is held by the outer bag holding mechanism 220 after the outflow operation, it is preferable to configure the support part, the holder part, and the pressing arm part so that when the outer bag is held at a predetermined position on the holder part 200, the weakened line WL formed on the outer bag is exposed, and the removal part 39 can be cut out along the weakened line WL while the outer bag is held at the predetermined position.

The auxiliary device 100 of the present invention shown in Fig. 3 employs such a configuration. That is, the outer bag holding mechanism 220 shown in Fig. 3 has an upper groove rail 221a and a lower groove rail 221b, which are arranged to extend horizontally in front of the support part 210 with a predetermined separation distance: D in the vertical axis direction so that the openings 223a, b of the grooves 222a, b face each other. In this way, when the outer bag 30 is in an upright state, the other end 32 and one end 31 are inserted into the horizontal groove openings 225a, b exposed on the end faces of one ends 224a, b of the upper groove rail 221a and the lower groove rail 221b, respectively, so that they can slide freely back and forth within the grooves (slidable). Furthermore, a stopper 227 is provided in the groove 222 on the other end side 226 (a and/or b) of at least one of the groove rails to define the range of sliding, and the position where the sliding stops upon contact with the stopper 227 is defined as the "predetermined position," so that the outer bag 30 can be held in this position.

The stopper 227 may be a structure having a vertical surface that blocks the groove. The length of the groove of the upper groove rail 221a and the lower groove rail 221b (the length from the stopper to the outer bag 30 side) is preferably at least 1/3 of the horizontal length of the outer bag 30 for the reason that the outer bag 30 can be stably held. In addition, the length of the upper groove rail 221a is preferably such that the starting point of the weakened line WL (or a notch leading thereto) is exposed at the other end 32 of the outer bag 30 so that the weakened line formed on the outer bag is exposed and the removal portion can be cut along the weakened line while the outer bag is held in the specified position. Note that the upper limit of the length of the lower groove rail 221b is usually the horizontal length of the outer bag 30, but in FIG. 3, it is aligned with the length of the upper groove rail 221a.

3, the separation distance: D is expressed as the distance between the bottom surfaces of the grooves 222 (a, b) of the upper groove rail 221a and the lower groove rail 221b. The separation distance: D may be at least the length equivalent to the height of the outer bag 30 and less than the length obtained by adding the depth of both grooves 222a, b to the height of the outer bag 30 at all points in the longitudinal direction of the groove rail, but it is preferable that the separation distance: D is at least the length equivalent to the height of the outer bag 30 at one end 224a, b, which is the insertion side of the outer bag 30, and is shorter than the length equivalent to the height of the outer bag 30 at the other end 226a, b, so that the stress decreases smoothly from one end to the other end, and in the outer bag held in a predetermined position by the outer bag holding mechanism, a stress is generated that widens the front-rear distance between the one main surface 34a and the other main surface 34b. By doing so, it is possible to keep the applicator insertion opening open after the applicator insertion opening forming operation, and the application operation can be performed smoothly.

The above describes the auxiliary device of the present invention with reference to FIG. 3, but these are shown as one embodiment, and the technical scope of the present invention is not limited to this specific embodiment. For example, a guide piece for assisting the operation of forming the applicator insertion opening may be provided on one end 224a of the upper groove rail 221a. Also, without providing a base portion, the other end 324 of the arm body may be made to a length equivalent to the support portion 210, and a locking mechanism for fixing the arm body and the support portion to each other may be provided, and the receiving surface 211 and the pressing force application surface 322 may be configured to sandwich the pressed area 35a and the pressed area 35b of the kit 10 (outer bag 30) and lock them in a state in which a pressing force is applied, so that when locked, the other end 324 of the arm body and the support portion 210 can stand on their own as legs. This can strengthen the lever action and further improve the reliability of the outflow operation.

1: Multi-component liquid composition preparation kit 2: Composite liquid agent package 3: Outer bag 40: Bottom seal portion (one end or both ends)
42: Upper end seal portion (other end or other end)
43: Simple seal portion 44: Weakened line 46: Notch 48: Applicator insertion opening 50: Applicator 52: Rod-shaped main body 54: Liquid (liquid agent) holding portion 10: This kit (multi-component liquid composition preparation kit)
20: Bag body 21: One end of bag body 22: Other end of bag body 23: Liquid agent 24: Flat bag 30: Outer bag 31: One end of outer bag 32: Other end of outer bag 33: Flat bag 34: Main surface 34a: One main surface 34b: Other main surface 35(a, b): Pressurized area 36: Bag body accommodation space 37: Liquid pool space 38: Space for inserting applicator 39: Removal part WL: Weakened line 100: Auxiliary tool (for multi-component liquid composition preparation kit) 200: Holder part 210: Support part 211: Receiving surface 212: First clamping part 220: Outer bag holding mechanism 221a: Upper groove rail 221b: Lower groove rail 222(a, b): Groove 223(a, b): Groove opening 224(a, b): One end of groove rail 225(a, b): Lateral groove opening 226(a, b): Other end of groove rail 227: Stopper D: Distance 300: Pressing arm portion 310: Connection mechanism 311: Hinge structure 320: Arm body 321: Second clamping portion 322: Pressing force load surface 323: One end of arm body 324: Other end of arm body R-Ax: Rotation axis α: Interior angle 400: Base portion

Claims (6)

The present invention comprises two or more bags each having substantially the same shape and one end and the other end; and an outer bag consisting of a flat bag having one end and the other end and having a rectangular shape with two main surfaces on the front and back sides being substantially the same shape, and having a bag accommodation space and a liquid collection space inside; each of the two or more bags holds the components of a multi -component liquid composition in two or more liquid agents, and is configured so that the liquid agents flow out from one end by applying a pressing force to the liquid agents held inside each bag, and a pressing area is defined at a predetermined position corresponding to each other on the two main surfaces on the front and back sides of the outer bag, that is, the one main surface and the other main surface facing each other. the two or more bags are arranged so that one end and the other end are respectively directed to one end side and the other end side of the outer bag, and the other ends of all the bags are overlapped and sandwiched between the other end on the one main surface side and the other end on the other main surface side, so that the liquid agent flows out from one end of all the bags by pressing the pressed region of the outer bag, and the liquid pool space is a space that can hold the liquid agent flowing out from the two or more bags without contacting the two or more bags,
a holder portion including: a support portion having a receiving surface and a first clamping portion; and an outer bag holding mechanism capable of detachably holding the outer bag at a predetermined position in an upright state with one end of the outer bag facing downward; and
A pressing arm portion connected to the holder portion and rotatable around the vicinity of the connecting portion;
When the auxiliary device is self-supporting on a horizontal surface and the outer bag is held at a predetermined position in the holder section, the direction in which one main surface of the outer bag faces is defined as the forward direction, the direction parallel to the horizontal plane along which the bottom side of the rectangle forming the shape of the one main surface extends is defined as the horizontal axis direction, and the vertical direction is defined as the vertical axis direction.
In the support portion, the receiving surface is a plane having an area capable of pressing at least a major portion of a pressed area on the other main surface of the outer bag held at a predetermined position of the holder portion, and is disposed so as to face the pressed area, and the first clamping portion is disposed on the rear side and below,
the pressing arm portion includes: an arm body having a second clamping portion and a pressing force application surface; and a connecting mechanism having a hinge structure that is disposed in one end region of the arm body, connects the arm body to the top of the support portion or its periphery, and allows the arm body to rotate at least a predetermined angle around an axis in the horizontal axis direction near the connecting portion as a rotation axis;
When the angle on the front side between the longitudinal direction of the arm body and the vertical direction passing through the rotation axis is defined as an interior angle, and the direction that is forward when the interior angle is 0° is defined as the surface side of the arm body,
the second clamping portion is disposed on the other end of the arm body or on the surface side thereof in the vicinity thereof, the pressing force application surface is a flat surface having an area capable of pressing at least a major portion of a pressed area on one main surface of an outer bag held at a predetermined position in the holder portion, and the pressing force application surface is disposed on the back side of the arm body at a position capable of abutting against the pressed area and pressing the pressed area when the arm body is rotated in a direction that reduces the interior angle between the first clamping portion and the second clamping portion.
An auxiliary tool for a multi-component liquid composition preparation kit, comprising: The auxiliary tool for a multi-component liquid composition preparation kit according to claim 1, which has a base part for fixing the holder part connected to the pressing arm part at an upper part and allowing the auxiliary tool to stand independently with the height direction of the holder part being perpendicular or approximately perpendicular to a horizontal plane. The outer bag holding mechanism is structured such that the upper groove rail and the lower groove rail are arranged to extend in the horizontal direction in front of the support pillar with the groove openings facing each other and spaced a predetermined distance apart in the vertical direction, so that when the outer bag is in an upright state, the other end and one end of the outer bag are inserted into the horizontal groove openings exposed on the end faces of one ends of the upper groove rail and the lower groove rail, respectively, to allow the outer bag to slide freely back and forth within the grooves, and a stopper is provided in the groove on the other end side of at least one of the groove rails to hold the outer bag in a predetermined position.
3. An auxiliary tool for the multi-component liquid composition preparation kit according to claim 1 or 2 . 3. An auxiliary device for a multi-component liquid composition preparation kit as described in claim 1 or 2 , wherein the first clamping portion and the second clamping portion can be clamped and pressed between fingers to rotate the arm body and apply a pressing force . The auxiliary device for a multi-component liquid composition preparation kit according to claim 1 or 2, wherein the hinge structure in the connecting mechanism is a spring hinge or a hinge structure having a leaf spring function adjusted so that the interior angle is maintained at a predetermined angle within a range of 10 to 35° in an unloaded state. 4. An auxiliary device for a multi-component liquid composition preparation kit as described in claim 3, wherein the distance between the bottom surfaces of the grooves of the upper groove rail and the lower groove rail in the outer bag holding mechanism is greater than or equal to the length of the height of the outer bag at one end face and smoothly decreases from one end side to the other end side so that it is shorter than that length at the other end side, and wherein a stress is generated in the outer bag held in a predetermined position by the outer bag holding mechanism such that the front-to-rear distance between one main surface and the other main surface is widened.