WO2001036294A1

WO2001036294A1 - Liquid storing container and package body

Info

Publication number: WO2001036294A1
Application number: PCT/JP2000/008123
Authority: WO
Inventors: Masaomi Imai; Hiroyuki Terada; Tamayo Toyama
Original assignee: Terumo Kabushiki Kaisha
Priority date: 1999-11-17
Filing date: 2000-11-17
Publication date: 2001-05-25
Also published as: JP4190185B2; AU1415601A

Abstract

A liquid storing container which permits simple and positive unsealing, has a directional pattern in liquid discharging, and can be downsized; and a package body storing the container. A liquid storing container consisting of a sealing material having a sealing material-to-sealing material joining sealing portion on at least part of the outer periphery to thereby form an inner space, and having liquid stored in the space in a sealed condition, wherein a weak sealing segment for forming an unsealing port and being weaker in joining strength than other sealing segments is formed in at least part of the above sealing portion. The weak sealing segment has a shape in which the length of the weak sealing segment in a direction parallel to an outer edge decreases from the center toward the outer edge side of the storing unit.

Description

Description Liquid storage container and package Technical field

TECHNICAL FIELD The present invention relates to a liquid storage container and a package ₍ Background Art)

At medical sites where aseptic operations are required, operations such as contacting a medical device with a liquid are performed inside a sealed package. At this time, as a liquid storage container that discharges liquid, a container or the like in which a space (liquid storage portion) is formed inside by joining (sealing) the outer peripheral portions of the superposed sheets together is known. The liquid stored in the container is usually subjected to external pressure, for example, by pressing the liquid storage portion from the outside, thereby exfoliating a part of the opening seal portion formed on the outer peripheral portion, so that the inner portion is removed. Release liquid.

In such a conventional liquid storage container, a seal portion serving as an opening opening at the time of discharging the liquid is formed by narrowing the seal width of a part of the outer peripheral seal portion formed in a band shape with the same strength throughout.

However, such a liquid container has the following problems.

· In order to open at a specific position of the seal part joined with a certain strength, it is necessary to make the seal area (width) of the open part relatively small. In this case, the seal part to be the open part is sealed. It is also necessary to secure a width that can maintain the property The width of the seal portion of the unopened portion sandwiching the area becomes relatively sufficiently large. Therefore, especially when the space for storing the liquid is small, the ratio of the seal portion to the entire liquid storage container is increased, and it is difficult to reduce the size of the liquid storage container.

• Depending on how the force is applied, the direction in which the liquid is discharged may vary, and the liquid may be discharged in a direction other than the intended direction. Disclosure of the invention

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a liquid container that can be easily and reliably opened, has directivity in liquid discharge, and can be downsized. An object of the present invention is to provide a package in which this is stored.

Such an object is achieved by the present invention of the following (1) to (15).

(1) A liquid storage container having a seal portion in which sheet materials are joined to each other on at least a part of an outer periphery thereof, the liquid storage container being made of a sheet material having a space formed therein, and having a liquid sealed and stored in the space And

A liquid container having at least a part of the seal portion having a weak seal portion for forming an opening having weaker joint strength than other seal portions.

(2) The liquid storage according to (1), wherein the weak seal portion has a shape in which the length of the weak seal portion in a direction parallel to the outer edge gradually decreases from the center of the space toward the outer edge. container.

(3) When the length of the weak seal portion in the direction parallel to the outer edge of the sheet material is L, the maximum value is L _max , and the minimum value is L _min , 0.05 ≤L _min ZL _max ≤0. 95 The liquid storage container according to the above (1) or (2), which satisfies the relationship of 5. (4) The liquid container according to any one of (1) to (3), wherein the minimum value _Lmi „of the length of the weak seal portion in a direction parallel to the outer edge of the sheet material is 2 to 100 mm. container.

(5) When the width of the weak seal portion in a direction perpendicular to the outer edge of the sheet material is W, and the minimum value of the length of the weak seal portion in a direction parallel to the outer edge of the sheet material is L _min ,

0.1. The liquid container according to any one of the above (1) or (4), which satisfies the relationship of 1≤W / L _min ≤10.

(6) the bonding strength of the sealing portion, when the bonding strength of the weak seal portions was set to F _2, 0. Omicron

The liquid container according to any one of the above (1) to (5), which satisfies the relationship 55.

(7) the bonding strength F ₂ of the weak seal portion, 50~: L 000 g fZl 5 liquid container according to any one of (1) to a mm width (6).

(8) The liquid storage container according to any one of (1) to (7), further including a plurality of the weak seal portions having different discharge directions of the liquid.

(9) The liquid container according to any one of the above (1) to (7), having a plurality of the weak seal portions in which the liquid discharge directions are substantially parallel.

(10) The liquid according to any one of (1) to (9), wherein the inside of the space is partitioned into a plurality of spaces, and at least one of the spaces has a weak seal portion as the opening port. Storage container.

(11) The liquid container according to any one of (1) to (10), wherein the sheet material has a gas barrier property.

(12) The liquid is used for medical purposes as described in (1) to (11) The liquid container according to any one of (1) and (2).

(13) The liquid storage container according to any one of the above (1) to (12), a device used in contact with the liquid in the liquid storage container, and the liquid storage container and the device are stored. A package comprising: a sheet material;

(14) The package according to (13), wherein the device is for medical use.

(15) The above (13) or (13) wherein a liquid absorbent material is stored in the sheet material.

The package according to (14). BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a plan view (internal perspective view) showing a first embodiment of a liquid container according to the present invention.

FIG. 2 is a plan view (an internal perspective view) showing a liquid storage container according to a second embodiment of the present invention.

FIG. 3 is a plan view (an internal perspective view) showing a third embodiment of the liquid container according to the present invention.

FIG. 4 is a plan view (an internal perspective view) illustrating a liquid storage container according to a fourth embodiment of the present invention.

FIG. 5 is a plan view (an internal perspective view) illustrating a liquid storage container according to a fifth embodiment of the present invention.

FIG. 6 is a plan view (an internal perspective view) showing an embodiment of the shape of the weak seal portion. FIG. 7 is a plan view (internal perspective view) showing an embodiment of the shape of the weak seal portion. FIG. 8 is a plan view (an internal perspective view) showing an embodiment of the shape of the weak seal portion. FIG. 9 is a plan view (internal perspective view) showing an embodiment of the shape of the weak seal portion. FIG. 10 is a plan view (an internal perspective view) showing the first embodiment of the package of the present invention.

FIG. 11 is a sectional view taken along line AA in FIG.

FIG. 12 is a plan view (an internal perspective view) showing a second embodiment of the package of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

The liquid storage container of the present invention has a seal portion in which sheet materials are joined to each other on at least a part of the outer periphery, and is made of a sheet material having a space formed therein, and is sealed and stored in the space. A liquid storage container having a liquid, wherein at least a part of the seal portion has a weak seal portion for forming an opening which has a weaker bonding strength than other seal portions.

Hereinafter, the liquid storage container and the package of the present invention will be specifically described with reference to the accompanying drawings. The drawings shown below illustrate preferred embodiments, and the liquid container and the package of the present invention are not limited to the embodiments shown in the drawings. FIG. 1 is a plan view (internal perspective view) showing a first embodiment of a liquid container according to the present invention. Hereinafter, the upper side of FIG. 1 (the same applies to FIGS. 2 to 10 and 12) will be referred to as the “base end” and the lower side as the “top end”.

As shown in FIG. 1, the liquid storage container 1 is formed by stacking sheet materials 2 and sealing the outer peripheral portion thereof into a bag shape, and the liquid 3 is stored in the inside thereof.

In FIG. 1, the liquid container 1 is substantially rectangular, and each corner is rounded. Although it has a shape, the shape is not particularly limited.

The sheet material 2 is made of a material that does not allow liquid to pass through, but preferably has a gas barrier property. Here, as one of a gas barrier, water vapor permeability, preferably rather is ^{50 g / m 2 - 24 hrs} - 40 ° C - 90% RH or less, more preferably ^{1 0 gZm 2 - 24 hrs -} 40 ° C - 9 0% RH or less, more preferably ^{1 g / m 2 - 24h rs} - 40 ° C - refers to is less than 90% RH. The water vapor transmission rate is measured by the method described in JIS K7129 (method). Since the sheet material 2 has the gas barrier property as described above, evaporation of moisture from the inside of the liquid storage container 1 can be prevented. As a result, reduction and concentration of the liquid 3 can be prevented, and the amount of the liquid 3 can be kept to a minimum necessary amount, and the volume and weight of the entire liquid storage container 1 can be reduced. In addition, intrusion of water vapor from the outside of the liquid container 1 can be prevented.

Examples of the sheet material having the gas barrier properties include polyolefin resins such as polyethylene and polypropylene, blend resins of these polyolefin resins, polyester resins such as polyethylene terephthalate, polyvinylidene chloride, and vinyl monochloride vinylidene. A single layer film such as a coalesced film, a film obtained by depositing aluminum, silica or the like on these films, a metal foil such as an aluminum film, an aluminum muramineto film, or a film containing a metal foil can be used. Further, a laminate of two or more of these films may be used.

The thickness of the sheet material (single-layer or multi-layer laminate) 2 is appropriately determined according to the layer configuration and the characteristics (flexibility, strength, water vapor permeability, heat resistance, etc.) of the material used. Limit Although not specified, it is usually preferably about 60 to 700 / m, more preferably about 100 to 500 m.

Sheet materials constituting such a sheet material 2 include, for example, an inflation method, a T-die method, a blow molding method, a dry lamination method, a hot melt lamination method, a coextrusion inflation method, a coextrusion T-die method, a hot press method, and the like. Sheets formed by the above various methods can be used.

A belt-shaped seal portion 21 is formed on the outer periphery of the sheet material 2. The seal portion 21 is formed by fusing the sheet material 2 (heat fusion, high frequency fusion, ultrasonic fusion, or the like) or bonding (adhesion with an adhesive or a solvent). As a result, a space (storage portion) 3a is formed inside the sheet material 2, and the liquid 3 stored in the space is sealed. In the present invention, as will be described later, the force for providing the weak seal portion 22 for forming the opening 21 in a part of the seal portion 21 below will be described below. It is referred to as part 21.

In the illustrated configuration, the seal portion 21 is formed in a band shape on the outer periphery of the sheet material 2 and has a substantially rectangular frame shape having four sides, and each corner portion has a rounded shape. .

The configuration is not limited to the illustrated one. For example, a sheet material may be folded in two from the center and three sides may be sealed.

The width of the seal portion 21 is determined by the side on the tip side, that is, the side 21 a having the weak seal portion for forming the opening (hereinafter, also simply referred to as the opening or weak seal portion) 22 and the other three sides 2 1b, 21c, and 21d may be different. Fig. 1 shows that the width of the seal part 21 is larger at the tip side 21a compared to the other sides 21b to 21d. The width of the sealing portion 21a around the sealing opening 22 may not be larger than the other sides 21b to 21d.

The width of the seal portion 21 varies depending on the joint strength of the seal, but is usually about 1 to 30 mm, preferably about 5 to 15 mm.

In FIG. 1, the width of the seal portion 21 on each side is constant, but the width of the seal portion 21 may change continuously.

In the present invention, the unsealing opening 22 is formed in such a sealing portion 21 by weakening the bonding strength as compared with the unsealing portion as described later. Unlike the case where the opening is formed by reducing the sealing area (width) with the same joining strength, the opening width of the weak sealing portion 22 for forming the opening is changed to the other sealing portion ( Since the width can be the same as that of the unopened part), if the unopened opening is sealed with the same joining strength using a conventional sheet material, the seal width 2 1 a of the side where the opening 2 2 is provided Can be made narrower than before. Therefore, the size of the liquid container can be reduced.

In this specification, the bonding strength refers to the strength measured by the following peel test.

Two sheets are stacked to produce a joint sheet having a seal portion with a seal width of 15 mm. Fix the end of one unsealed sheet and the other unsealed sheet at a constant speed (20 O mm / min) with a tensile tester at a constant speed (20 O mm / min), perpendicular to the seal width of 15 mm. Pull in the direction. The maximum strength when the seal was pulled until it peeled off was taken as the bonding strength.

The joining strength of the unopened part of the seal part 21 is not particularly limited, The width is preferably 500 gf / 15 mm, more preferably 100 to 500 gf Z15 mm.

Generally, the bonding strength of the seal portion 21 is preferably as high as possible. However, depending on the material of the sheet material 2 and the like, if the unsealed portion exceeds the upper limit, it may be difficult to manufacture. On the other hand, if the bonding strength of the unopened seal portion is less than the lower limit value, there is a possibility that the seal portion 21 other than the opening port (weak seal portion) 22 described later will peel off and cause a liquid leakage. You.

At least one opening is provided in a part of the outer periphery of the sheet material 2. In the present embodiment, one opening is formed at the center of the side of the tip.

This weak seal portion 22 has a bonding strength that can ensure liquid tightness (airtightness) before opening, but the bonding strength of the weak portion is smaller than that of the seal portion 21 so that the bonding of the portion can be peeled off. It is provided so that it can be easily opened and forms an opening.

Such a weak seal portion 22 can be formed by fusing the portion, for example, at a lower temperature, a shorter time, a lower pressure, or a combination thereof than the seal portion 21.

By forming the weak seal portion 22 having a different bonding strength from the seal portion 21 as described above, only the weak seal portion 22 is peeled off at the time of opening, and the liquid 3 is released from this portion. Become.

The weak seal portion 22 can be peeled off by pressing (pressing) the portion of the sheet material 2 that stores the liquid 3 to increase the internal pressure in the liquid storage container 1. In addition, the weak seal portion 22 may be rubbed and loosened by hand. You may use together. Thus, the liquid 3 can be discharged to the outside by an extremely simple operation.

Here, the outer edge of the side 21 a on the distal end side of the seal portion 21 is referred to as an outer edge 23.

The length of the weak seal portion 22 in a direction parallel to the outer edge 23 from the center direction of the sheet material 2 toward the outer edge 23 (hereinafter simply referred to as “weak seal portion 2 2”). ) Is reduced at a constant rate. That is, the shape of the weak seal portion 22 is trapezoidal as shown in the figure.

In addition to the low bonding strength of the weak seal portion 22, the length of the weak seal portion 22 on the center side (base end side) of the sheet material 2 is thus smaller than the outer edge 23 side of the sheet material 2. The opening of the weak seal portion 22 is further facilitated by the fact that the length is larger than the length (at the front end side).

In addition, since the weak seal portion 22 has such a shape, it can provide directivity when discharging the liquid 3 and can discharge the liquid 3 intensively toward a relatively narrow range. Becomes

Note that the reduction rate of the length of the weak seal portion 22 from the center direction of the sheet material 2 toward the outer edge 23 may not be constant. That is, the shape of the weak seal portion 22 need not be a trapezoid.

In the illustrated configuration, the weak seal portion 22 is formed at the center of the side of the tip, but the formation site is not particularly limited.

The bonding strength of the weak seal portion 22 is not particularly limited as long as the liquid-tightness can be maintained, but is preferably 50 to: L0000gfZl, preferably 5 mm, and 100 to More preferably, the width is 500 gf Zl 5 mm. Weak seal part 2 2 joint strength If the value exceeds the upper limit, a large force is required for opening, and the certainty of opening decreases.

On the other hand, if the bonding strength of the weak seal portion 22 is less than the lower limit, the weak seal portion 22 may be opened by mistake and liquid leakage may occur.

When the length of the weak seal portion 22 in the direction parallel to the outer edge of the sheet material is L, the maximum value is _Lmax , and the minimum value is _Lmin , it is preferable that the following formula (I) is satisfied.

_{_{0. 05≤L min / L ma x ≤}} 0. 95 ... (I)

It is more preferable that the formula (I) is satisfied instead of the formula (I).

0.1 ≤L _min ZL _max ≤0.7… (II)

When the value of L _min ZL _max exceeds the upper limit in the above formula, the width of the weak seal portion 22 in a direction perpendicular to the outer edge 23 (hereinafter, simply referred to as the “width of the weak seal portion 22”), etc. Can reduce the directivity of the release of liquid 3.

On the other hand, if the value of L _min / L _max is less than the lower limit in the above formula, a large force is required for opening and discharging the liquid 3 depending on the value of L _{min and} the like, and the flow rate of the liquid 3 is sufficient. May not be secured.

The value of L _min is not particularly limited, but is preferably from 2 to 100 mm, and more preferably from 5 to 50 mm.

When the value of L _min exceeds the upper limit, the directivity of the release of the liquid 3 may decrease depending on the value of L _{max and} the like.

On the other hand, if the value of L _min is less than the lower limit, depending on the width of the weak seal portion 22 and the joining strength of the weak seal portion, a large force is required for opening and discharging the liquid 3, and the flow rate of the liquid 3 is reduced. In some cases, it may not be possible to secure enough. When the width of the weak seal portion 22 is W, it is preferable that the following formula (ΠΙ) is satisfied.

0.1 ≤WXL _min / ≤ 10… (III)

It is more preferable that the formula (IV) is satisfied instead of the formula (III).

0.2≤W / L _min / ≤ 7 (IV)

When the value of W / L _min exceeds the upper limit in the above formula, the ratio of the seal portion 21 and the weak seal portion 22 to the entire liquid storage container 1 increases depending on the size of the liquid storage container 1 and the like. The storage container 1 is enlarged.

On the other hand, if the value of WZL _min is less than the lower limit in the above formula, stable molding of the weak seal portion 22 may be difficult depending on the bonding strength of the weak seal portion 22 and the like.

The bonding strength of the sealing portion 2 1, when the bonding strength of the weak seal part 22 was F _2, preferably satisfies the following formula (V).

0. 01≤F ₂ / F, ≤0. 55… (V)

It is more preferable that the formula (VI) is satisfied instead of the formula (V).

0. 02≤F ₂ / F ₁ ≤0.50… (VI)

F ₂ / F! If the value exceeds the upper limit in the above formula, a large force is required for opening, depending on the width W of the weak seal portion 22, and the like, and the reliability of opening is reduced. On the other hand, if the value of F ₂ ZF, is less than the lower limit in the above formula, the bonding strength of the weak seal portion 22 becomes relatively weak depending on the width W of the weak seal portion 22 and the like, and the weak seal portion 22 becomes It may peel off accidentally and cause liquid leakage.

The value of the bonding strength F ₂ weak seal portion 22 is preferably from 50 to 1000 gf Z 15 mm width as described above, that is 100~500 gf / l 5 mm width / JP00 / 08123

13

Is more preferable. The value of F ₂ exceeds the upper limit, depending on the width W and the like of the weak seal part 22, a large force to opening is required, the certainty of the opening is reduced. On the other hand, if the value of F ₂ is less than the lower limit, the weak seal portion 22 may be erroneously peeled off, causing liquid leakage.

As an example of an embodiment that satisfies F ₂ / F, as described above, a laminated film of aluminum and polypropylene is used as a sheet material, and in a liquid container as shown in FIG. the W was formed in 15 mm, the bonding strength F ₂ a 100~500 g fZl 5 mm width of the weak seal part 22, an example in which a bonding strength F 1 of the non-unsealing portion seal portion 21 was set to 1 000 gf Z 1 5mm width or It is preferably exemplified. In this example, the seal width of the seal portion 21 on the side 21a provided with the opening is as narrow as 15 mm, opening is easy, and liquid tightness is sufficiently maintained.

The liquid 3 stored in the liquid storage container 1 is not particularly limited, and includes, for example, various liquids such as water and solution, as well as semi-solid and viscous fluid substances. The liquid 3 is not particularly limited in kind and use, but when used for medical purposes, for example, a liquid medicine, a blood coagulant, an anesthetic, a disinfectant, an antibiotic, a lubricant, a diagnostic agent, a physiological saline solution , Purified water, xylocaine jelly, infusion, oral high-calorie nutritional supplement, and the like.

FIG. 2 is a plan view (an internal perspective view) showing a liquid storage container according to a second embodiment of the present invention. Hereinafter, the liquid container of the second embodiment will be described focusing on the differences from the first embodiment, and the description of the same items will be omitted.

As shown in FIG. 2, the seal portion 21 is formed in a band shape on the outer periphery of the sheet material 2 as in the first embodiment. However, in the first embodiment, the seal portion 21 While the width W of 21 a is larger than the other three sides 21 b to 21 d, in the second embodiment, the side 21 a at the tip and another The width W of the seal portion 21 on the side 21 b is larger than that of the other two sides 21 c and 21 d.

Further, the liquid container 1 of the second embodiment has two weak seal portions 22 and 24.

These two weak seal portions 22 and 24 are provided on the side 21 a at the tip and one of the sides 21 b and 21 d perpendicular thereto, respectively. An example is provided.

By having a plurality of weak seal portions in this manner, it is possible to discharge the liquid 3 from each of the weak seal portions 22 and 24 in a direction corresponding thereto, and to discharge the liquid 3 from the plurality of weak seal portions. It is also possible to discharge the liquid 3 at the same time, which makes it possible to use the liquid 3 when it is desired to discharge the liquid 3 in a relatively wide range or when there are a plurality of directions to discharge.

When the liquid 3 is discharged, the direction and order of the discharge can be arbitrarily selected. For example, the pressure of the liquid 3 is applied to the weak seal part by pressing the unsealed part or the specific weak seal part after opening with a finger in advance, or bending the sheet material 2 around it. After preventing the liquid 3 from being applied, the portion of the sheet material 2 that stores the liquid 3 is pressed, and only the weak seal portion to which the pressure of the liquid 3 is applied is opened, and the liquid 3 can be discharged therefrom.

The conditions such as the shape of the weak seal portion, L _max , L _min , and the joint strength F 2 are the same as those in the first embodiment, but these conditions are applied to the weak seal portion 22 and the weak seal portion 24. May be the same or different.

FIG. 3 is a plan view (an internal perspective view) showing a third embodiment of the liquid container according to the present invention. Hereinafter, the liquid storage container according to the third embodiment will be described focusing on differences from the first and second embodiments, and description of the same items will be omitted.

As shown in FIG. 3, the liquid storage container 1 of the third embodiment is formed by fusing or bonding both sides 21 a and 21 c of a sheet material (inflation sheet material) 2 formed in a cylindrical shape. It has a bag shape, and a liquid 3 is stored in a space 3a formed therein.

Further, the liquid storage container 1 of the present embodiment has two weak seal portions 22 and 24 similarly to the liquid storage container 1 of the second embodiment, but in the second embodiment, two weak seal portions are provided. The seal portions 22 and 24 are positioned so that the discharge direction of the liquid 3 is substantially vertical, whereas in the third embodiment, one of the seal portions 21 a and 21 c (FIG. In 3, the liquid 3 is positioned so as to be almost parallel to 2 1 a).

As described above, when there are a plurality of weak seal portions on the outer periphery of the sheet material 2, these weak seal portions are substantially parallel even if the discharge directions of the discharged liquid are different. It may be located so that it becomes.

The conditions such as the shape of the weak seal portion, L _max , L _min , and the joining strength F ₂ are the same as those in the first embodiment, but the weak seal portion 22 and the weak seal portion 24 have the same conditions. May be the same or different.

FIG. 4 is a plan view (an internal perspective view) illustrating a liquid storage container according to a fourth embodiment of the present invention. Hereinafter, the liquid storage container according to the fourth embodiment will be described focusing on differences from the first to third embodiments, and description of the same items will be omitted. As shown in FIG. 4, the liquid storage container 1 according to the fourth embodiment is internally partitioned into two spaces (storage portions) 3 a and 4 a by a partition portion (seal portion 21 e) 28. The liquids 3 and 4 are stored in the spaces 3a and 4a, respectively. In addition, weak seal portions 22 and 24 are provided for each space. In this case, the volumes of the two spaces may be different.

The liquid 3 and the liquid 4 may have the same composition or different compositions.

When the liquid 3 and the liquid 4 have the same composition, the supply amount of the liquid can be adjusted in three stages. If both liquid 3 and liquid 4 are released, the total supply of liquid will be the largest, if only liquid 3 is supplied, the supply of liquid will be medium, if only liquid 4 is released, The supply of liquid is the lowest.

In this way, by opening the weak seal according to the required amount of liquid, the amount of liquid remaining in the opened state in the liquid storage container 1 after use can be minimized, which is convenient. Is improved.

If liquid 3 and liquid 4 have different compositions, they should be stored separately until use, and mixed before use in order to prevent alteration and deterioration due to reactions, etc. It can be applied when preferable, when releasing liquid 3 and liquid 4, when it is necessary to release in a certain order, and the like.

Examples of the liquid 3 and the liquid 4 include an arbitrary combination of two of an anesthetic, a disinfectant, an antithrombotic agent, an antibiotic, and a lubricant.

The conditions of the shape of the weak seal portion, L _max , L _min , joining strength F 2, and the like are the same as in the first embodiment, but the weak seal portion 22 and the weak seal portion 24 May be the same or different.

FIG. 5 is a plan view (an internal perspective view) illustrating a liquid storage container according to a fifth embodiment of the present invention. Hereinafter, the liquid storage container of the fifth embodiment will be described focusing on differences from the first to fourth embodiments, and description of the same items will be omitted.

As shown in FIG. 5, the liquid storage container 1 according to the fifth embodiment has a partition (seal portion 21 e) 28 having two spaces (storage portions) 3 as in the fourth embodiment. a and 4a are partitioned and liquid 3 and liquid 4 are stored in each space, but only one opening is formed in the space on the tip side. In addition, a weak seal portion 29 is formed substantially at the center of the partition portion. By peeling off the weak seal portion 29, the two spaces communicate with each other.

Thus, at least one weak seal portion as an opening is sufficient. The liquid 3 and the liquid 4 may have the same composition or different compositions.

When the liquid 3 and the liquid 4 have the same composition, the supply amount of the liquid can be adjusted similarly to the third embodiment. In particular, when discharging all the stored liquid, However, by peeling off the weak seal portion 29, the liquid can be continuously discharged.

If liquid 3 and liquid 4 have different compositions, store them separately until use to prevent deterioration or deterioration due to reaction, etc., and mix both liquids when using. Etc. can be applied.

In particular, according to the present embodiment, since the liquid 3 and the liquid 4 can be mixed in the liquid container 1, the liquid must be sufficiently mixed so as to be uniform before discharging. It can be applied when it is not necessary.

Examples of the combination of the liquid 3 and the liquid 4 include physiological saline and heparin, and physiological saline and xylocaine.

In the illustrated configuration, the weak seal portion 29 for communicating a plurality of spaces in the liquid storage container 1 is formed substantially at the center of the partition portion 28, but such a weak seal portion is It may not be formed at the center of the part. Further, in the illustrated configuration, only one such weak seal portion is formed, but two or more weak seal portions may be formed, or the weak seal portion may be formed over substantially the entire partition portion 28. . The shape is not particularly limited.

Note that conditions such as bonding strength F ₂ weak seal portion is the same as the first embodiment, these conditions in the weak seal part 2 2 a weak seal portion 2 9 can be the same or different May be.

In FIGS. 1 to 5 (first to fifth embodiments), the weak seal portion 22 serving as an opening is formed such that the direction of liquid discharge is relative to the outer edge of the side where the weak seal portion is formed. Although the aspect in which it is provided to be vertical is shown, it may be set so as to be oblique to the outer edge of the side.

That is, as shown in FIG. 6, the shape of the weak seal portion 22 is a trapezoid in which two adjacent corners are at right angles, and the discharge direction of the liquid 3 is slightly from the direction perpendicular to the outer edge 23. It may be inclined, and as shown in FIG. 7, the two corners where the shape of the weak seal portion 22 faces each other are both obtuse angles or trapezoidal shapes that are both acute angles, and the discharge direction of the liquid 3 is It may be a large inclination from a direction perpendicular to the outer edge 23. 6 and 7, the method of discharging the liquid 3 is indicated by arrows. Further, in the first to fifth embodiments shown in FIGS. 1 to 5, the weak seal portion serving as the opening is a rate of decrease in length, but the rate of decrease in length is constant. May not be fixed.

As shown in FIG. 8, the length of the weak seal portion 22 may decrease at a constant rate from the base end side toward the distal end partway, and thereafter the length may be constant. Further, as shown in FIG. 9, the decreasing rate of the length of the weak seal portion 22 may decrease continuously from the base end side to the distal end side. That is, the weak seal portion 22 may have a shape having a curved portion.

According to the present invention, there is provided the liquid storage container as described above, a device used in contact with the liquid in the liquid storage container, and a sheet material for storing the liquid storage container and the device. The present invention also provides a package characterized by the following.

FIG. 10 is a plan view (internal perspective view) showing a first embodiment of a package having the above-described liquid storage containers therein, and FIG. 11 is a cross-sectional view taken along line AA in FIG. It is a figure.

As shown in FIGS. 10 and 11, the package 5 is composed of a liquid container 1, a device 7 used in contact with the liquid 3 in the liquid container 1, and a liquid container 1 and the device 7. Packaging material 6 to be stored.

The packaging material 6 includes a pair of opposed sheet materials 6a and 6b. As shown in FIG. 11, one sheet material 6a has a flat shape, and the other sheet material 6b has a desired pattern projection corresponding to the shape of the liquid storage container 1 and the device 7 to be stored. It is formed into a shape (froth shape), and both sheet materials 6a and 6b are overlapped and their outer peripheral parts are fused (heat fusion, high frequency fusion, ultrasonic fusion, etc.) ) Or glue (adhesive or It is sealed with a solvent (adhesion with a solvent) to form a bag.

An opening portion 62 is formed at the base end of the packaging material 6. The unsealing portion 62 is formed by pulling the pair of tabs 63, 63 in opposite directions to each other without sealing the base ends of the sheet materials 6a, 6b, thereby sealing the unsealing portion 62. The part 61 can be peeled off and opened.

Since the unsealing portion 62 is formed on the base portion 72 side of the device (catheter) 7 described later, particularly near the base portion 72, the insertion portion 71 is wetted with the liquid 3 by the device (catheter) 7 It is possible to more effectively prevent the base portion 72 from coming into contact with the liquid 3 and getting wet when the container is taken out of the opened opening portion 62.

The configuration of the packaging material opening portion is not limited to the one shown in the figure. For example, a notch is formed at the outer edge of the packaging material, and the packaging material 6 is torn and opened from the cutout portion. The weak seal portion similar to that described above may be formed in a part of the seal portion of the packaging material 6, and the weak seal portion may be peeled off and opened.

The packaging material 6 has seal portions 61 near the proximal end and the distal end of the device (catheter) 7 housed therein. Therefore, the longitudinal movement of the device (catheter) 7 in the packaging material 6 is restricted. In other words, the device (categorical device) 7 can move only a small distance in the longitudinal direction.

Further, the packaging material 6 has seal portions 61 near the base end and near the distal end of the liquid storage container 1 stored therein. For this reason, in the liquid container 1, the longitudinal movement of the device (catheter) 7 in the packaging material 6 is restricted. That is, the liquid container 1 can move only a small distance in the longitudinal direction of the device (catheter) 7. The method and material for forming the sheet material constituting the packaging material 6 are not particularly limited, but are preferably the same as in the case of the sheet material 2 described above.

The device 7 used in contact with the liquid 3 is not particularly limited, and when used for medical purposes, for example, a catheter, a guide wire, and the like are used. In the embodiment shown in FIG. 10, a catheter is used as the device 7.

The catheter 7 has an insertion portion 71 to be inserted into a living body, and a base portion 72 for holding and operating the catheter 7 by hand.

The insertion portion 71 is required to be smoothly inserted into a living body, and for that purpose, a material that expresses lubricity by wetting is applied to the surface of the insertion portion 71. Examples of such a substance include hydrophilic polymers as described in JP-A-60-259269 and JP-A-1195863. Also, for example, Japanese Patent Publication No. 6-32652, Japanese Patent Application Laid-Open No. 6-7426, International Application WO 8802623, International Application WO 8907521, International Application WO 8909246, International Application WO 9001344, International Application WO 9219289, International Application W 9393511, The substances and methods disclosed in International Application WO 9529722, JP-T10-502854, JP-T10-502855, and JP-T10-502856 may be used. Such a substance is usually present on the surface of the insertion section 71 in a non-wet state (dry state).

Such a substance is a polymer chemically bonded to the surface of the base material of the insertion portion 71, and is unlikely to be separated from the surface of the base material and eluted into water, a physiological isotonic solution, a lubricant, or the like. Is preferred from the viewpoint of sustainability of lubrication and safety.

Therefore, prior to using the catheter 7, release the liquid from the liquid container 1. The discharged liquid 3 is brought into contact with the insertion portion 71 to develop lubricity by wetting. On the other hand, the base 7 2 of the catheter 7 is a portion to be held by hand, so if wet with the liquid 3, it is slippery and reduces the operability of the catheter 7, and the liquid 3 adheres to the hand, Contact with liquid 3 is not preferred.

As described above, the catheter 7 has a portion that requires contact with the liquid 3, that is, a portion that does not require contact with the liquid 3 (particularly, a contact with the liquid 3). However, the base 72 is present, and the contact with the liquid 3 needs to be performed only for the insertion portion 71.

In the package 5, the liquid storage container 1 as described above is stored.

The weak seal portion 22 of the liquid storage container 1 is located near the side of the insertion portion of the catheter 7.

When the weak seal portion 22 is in such a position, the base portion 72 of the catheter 7 is hardly wet by the liquid 3 discharged from the weak seal portion 22, and furthermore, the insertion portion 7 1 Can be quickly and uniformly wetted.

At the position of the packaging material 6 facing the weak seal portion 22 of the liquid container 1, a tapered wall portion 64 is formed by the seal portion 61. The wall portion 64 is inclined at a predetermined angle with respect to the discharge direction of the liquid 3 discharged from the weak seal portion 22. By providing such a wall portion 64, the following actions and effects are produced.

The liquid 3 discharged from the weak seal portion 22 first collides with the wall portion 64, and its momentum is reduced, and as shown by the arrow in FIG. 10, the tape-like wall portion 6 4 And scatters at a wide angle toward the insertion portion 71 of the catheter 7. As a result, the liquid 3 spreads evenly in the longitudinal direction of the insertion portion 71, and the wide area of the insertion portion 71 is made more uniform. Can be wet.

Further, since the liquid container 1 has directivity as described above, it is possible to discharge the liquid 3 in the direction of the wall portion 64. As a result, these effects act synergistically to wet the insertion section 71 of the catheter 7 with the liquid 3 and not wet the base 72 of the catheter 7 with the liquid 3 ( Or, even if it gets wet, it is possible to partially wet the tip side of the base 72).

Although not shown, the packaging material 6 may contain a liquid-absorbing material that can absorb and hold the liquid 3.

As a result, after the liquid 3 is brought into contact with the insertion portion 71 of the catheter 7, the surplus liquid 3 can be absorbed and held by the liquid absorbent material. Therefore, the possibility that the base 72 of the force container 7 comes into contact with the liquid 3 and gets wet becomes lower.

The position of the liquid absorbing material in the packaging material 6 is not particularly limited, but is preferably, for example, near the tip of the catheter 7. As a result, the liquid 3 discharged from the liquid container 1 is sufficiently brought into contact with the insertion section 71 of the catheter 7 and then absorbed and held by the liquid absorbing material, so that the use efficiency of the liquid 3 is high.

Examples of the liquid absorbing material include synthetic polymers such as polyacrylate, polyvinyl alcohol, polyacrylamide, polyoxyethylene, and maleic acid materials, and polysaccharide materials such as starch, cellulose, and alginic acid. Polymeric water-absorbing materials such as natural materials are preferred. Other examples include sponge, cotton, gauze, nonwoven fabric, and those carrying the above-mentioned polymer water-absorbing material (for example, those used for diapers, sanitary goods, etc.). It is. These liquid absorbing materials can take various forms such as powder, film, sheet, and fiber (aggregate of fibers).

Next, an example of the method of use (action) of the above-described package 5 will be described.

For example, the liquid container 1 is pressed and pressed from outside the packaging material 6 with a finger or the like while the packaging body 5 is kept horizontal. As a result, the weak seal portion (opening opening) 22 of the liquid storage container 1 is peeled (ruptured), and the liquid 3 in the liquid storage container 1 is released.

The liquid 3 discharged from the opening 22 first collides with the wall portion 64, the momentum is reduced, and the liquid 3 scatters at a relatively wide angle. As a result, the liquid 3 spreads evenly in the longitudinal direction of the insertion portion 71 and uniformly wets at least a portion of the insertion portion 71 on the base end side. At this time, the base 72 of the catheter 7 hardly gets wet with the liquid 3, or even if it gets wet, the distal end side of the base 72 gets wet only partially. The body 5 is oriented such that its tip faces vertically downward. As a result, the liquid 3 adhering to the surface of the insertion portion 71 flows down along the surface of the insertion portion 71, so that the liquid 3 can evenly and uniformly wet up to the tip of the insertion portion 71.

When the liquid absorbing material (not shown) is stored in the packaging material 6, the excess liquid 3 is absorbed and held by the absorbent. This prevents, for example, when the base end of the package 5 is accidentally turned vertically downward, the base 2 of the force table テー comes into contact with the excess liquid 3 and gets wet. can do.

When the surface of the insertion portion 71 is wet with the liquid 3 as described above, the surface of the insertion portion 71 exhibits lubricity and reduces frictional resistance. After opening the weakly sealed part (opening opening) 2 2 of the liquid container 1, squeeze the liquid container 1 with a finger from the outside of the packaging material 6 as necessary to remove the liquid 3 in the liquid container 1. The operation of discharging all of the waste may be performed.

The interior of the packaging material 6 and the interior of the liquid storage container 1 are sterilized in advance, and the operation of developing lubricity on the surface of the insertion portion 71 of the catheter 7 by contact with the liquid 3 is sealed. This is performed without contacting the outside air in the packaged material 6, so that the force catheter 7 can maintain sterility.

As described above, when the surface of the insertion portion 71 of the catheter 7 is wet with the liquid 3 and exhibits lubricity, the opening portion 62 of the packaging material 6 is peeled (ruptured) and opened.

Then, the user holds the base 72 of the catheter 7 by hand, and takes out the catheter 7 from the inside of the packaging material 6. At this time, since the base 72 of the catheter 7 is not wet with the liquid 3, the base 72 is not slipped due to wetness when held by hand, and the operation of removing the catheter 7 can be performed quickly and reliably. be able to.

Further, since the base 72 of the catheter 7 is located near the unsealing portion 62, the base 72 adheres to the inner surface of the packaging material 6 even when the catheter 7 is taken out of the packaging material 6. It is prevented from contacting with the liquid 3 that has become wet.

The insertion portion 71 of the catheter 7 removed from the packaging material 6 is inserted or attached to a target site of a living body. When the catheter 7 is a urethral catheter (urinary catheter), the insertion portion 71 is inserted into the urethra and the bladder from the distal end side, and urination is performed via the catheter 7. At this time, since the surface of the insertion portion 71 has lubricity, it can be performed smoothly and safely.

In addition, such an insertion operation into a living body is performed by grasping the base 72 of the catheter 7 by hand. As described above, since the base 72 of the catheter 7 is not wet with the liquid 3, the base 72 does not slip when wet by hand when held by hand, and therefore, the catheter 7 Can be inserted quickly and reliably.

FIG. 12 is a plan view (an internal perspective view) showing a second embodiment of the package having the above-described liquid storage containers therein. Hereinafter, the package of the second embodiment will be described focusing on the differences from the first embodiment, and the description of the same items will be omitted. As shown in FIG. 12, the wall portion 64 is formed at a position facing the weak seal portion 22 of the liquid storage container 1, as in the first embodiment, but in the first embodiment, While the shape of the wall portion 64 is tapered, in the second embodiment, the wall portion 64 is formed so as to be substantially perpendicular to the direction in which the liquid 3 is released.

Therefore, in the first embodiment, when the discharged liquid 3 collides with the wall portion 64, the liquid 3 scatters at a wide angle toward the base end, whereas in the second embodiment, the liquid 3 flows toward the base end. It is hard to scatter.

As described above, by making the shape of the wall portion 64 substantially perpendicular to the discharge direction of the liquid 3, it is possible to adapt even when the portion to be brought into contact with the liquid 3 is limited to a relatively narrow range. Industrial applicability

As described above, according to the present invention, the liquid container can be easily and reliably opened, and the size can be reduced. In addition, the shape of the weak seal portion can provide directivity for discharging the liquid.

Claims

The scope of the claims

1. A liquid storage container having a seal portion in which sheet materials are joined to each other on at least a part of an outer periphery thereof, the liquid storage container being made of a sheet material having a space formed therein, and having a liquid sealed and stored in the space. And

2. The liquid container according to claim 1, wherein the weak seal portion has a shape in which a length of the weak seal portion in a direction parallel to the outer edge gradually decreases from a center of the space toward an outer edge.

3. When the length of the weak seal portion in the direction parallel to the outer edge of the sheet material is L, the maximum value is L _max , and the minimum value is L _min , 0.055 L _min ZL _max ≤ 0.95 3. The liquid container according to claim 1, which satisfies the relationship.

4. Fi bonding strength of the sealing portion, when the bonding strength of the weak seal portions was set to _{_{F 2, 0. 01≤F 2 ZF ≤}} 0. satisfies a relationship of 55 claims 1 to 3 Neu Zureka A liquid storage container according to claim 1.

5. bonding strength F ₂ of the weak seal portion, 50~: L 000 g iZl 5 mm container according to any one of the width der Ru claims 1 to 4.

6. The liquid container according to claim 1, wherein the inside of the space is partitioned into a plurality of spaces, and at least one of the spaces has a weak seal portion as the opening.

7. A liquid container according to any one of claims 1 to 6, and inside the liquid container. A package comprising: a device used in contact with the liquid; and a sheet material for storing the liquid container and the device.