JP4770185B2 - Containment bag - Google Patents

Description

  The present invention relates to an accommodation bag that can be easily opened without interfering with the contents.

  For example, in a medical liquid bag used for the purpose of infusion of medical liquid medicine to a patient, oxygen in the air or the like permeates a resin film constituting the medical liquid bag depending on the stored chemical liquid. Therefore, there is a concern that the chemical solution is oxidized and deteriorated. For this reason, a medical solution bag containing a drug solution that easily oxidizes is distributed in a form packaged in a dedicated storage bag formed of a material that does not transmit oxygen.

  As a storage bag for collecting such a medical drug solution bag or the like, for example, Patent Document 1 discloses that the fusion width is obliquely widened toward the bottom so that the inner width is narrowed, or the bottom is directed toward the bottom. The medical bag for collecting medical liquid bags is patented in such a way that the inner bag is narrowed obliquely and the inner width is narrowed, or the storage bag is cut diagonally toward the bottom, and the width of the collecting bag itself is narrowed It is disclosed in Document 1. With such a configuration, vibration and shaking of the medical solution bag are suppressed, pinholes due to friction with the inner surface of the collection bag and pinholes due to bending fatigue of the containing bag are prevented, and rubbing with the packaging box during transportation, etc. It is said that pinholes are generated, gas barrier properties are lost, and the chemical solution filled in the medical solution bag is prevented from being altered by oxidation or the like.

And in order to improve the openability of such a collection bag and make it easy to take out the collected product (medical solution bag), a collection bag formed by a multilayer sheet imparted with tearability in one direction is patented. It is disclosed in Document 2.
Utility Model Registration No. 2509993 JP 2004-275382 A

However, in the collection bag shown in Patent Document 1, the position of the collection item (medical solution bag) in the collection bag is fixed at the center, and thus there is a problem that the tearing destination is buffered by the collection item. If these tear lines are buffered on the collected items, the bottom of the collection bag cannot be torn from that point, or if the opening is cut in a position that does not buffer the storage part extremely, the bottom part has an oblique shape. Therefore, even if only an opening smaller than the collected object is formed, and even if it can be torn in a straight line, there is a problem that it is impossible to secure an opening enough to easily remove the collected object from the collecting bag. there were. In addition, in such a collection bag, if a bag containing liquid such as a medical drug solution bag is collected as the collected product, opening it with a blade such as scissors or a knife may cause damage or leakage of the collected product. There is a concern and is not preferable.

The present invention has been made in view of the above circumstances, and the tear line does not buffer the collected object and the regulated fusion part sealed obliquely at the bottom, and forms an opening larger than the collected object. An object of the present invention is to provide a collection bag that can be taken out and can be taken out reliably and easily.

In order to achieve the above object, according to the present invention, a bag is formed by fusing two sheets of material together at the end portion into a bag shape, and containing a stored item in an internal storage space,
The storage bag has a substantially rectangular outer shape, and has a side fusion part in which two sheet materials are fused on at least a part of both side surfaces, and the entire width of the packaging bag at the bottom of the accommodation space. Formed in a fused bottom fusion part, a regulation fusion part that regulates the item in the central part of the accommodation space that is spaced apart from the side fusion part, and an upper fusion part above the accommodation bag An opening notch that extends toward a separation portion formed between the side of the container regulated at the central portion and the side fusion portion, and the regulation fusion portion. Is provided with an accommodation bag characterized in that the accommodation space is inclined and fused so as to narrow the width toward the bottom fusion part .

The bag has only to further a non-fused regions of substantially triangular partitioned by said said regulating fusion part bottom fusion part. The stored item may be a medical solution bag containing a medical solution.

  According to the storage bag of the present invention, at the time of forming the tear line, the storage bag is regulated at the central portion in the width direction of the accommodation space by the regulation fusion part, and the cut is formed at a position extending toward the separation part. Thus, the tear line is formed large up to the vicinity of the bottom of the storage bag without interfering with the storage bag. As a result, a large take-out opening is formed in the containing bag, which is sufficient for easily taking out the stored item. Thereby, it becomes possible to reliably take out the contained item from the containing bag easily and without being damaged.

  In addition, by forming a substantially triangular non-fused area at the bottom, corners and wrinkles are created in the non-fused area, absorbing the corners and wrinkles that occur in the storage part to eliminate wrinkles, and pins caused by repeated vibration, etc. Prevents damage to the collection bag, such as holes.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an external perspective view showing a medical drug solution bag containing a medical drug solution bag as a stored item as an embodiment of the storage bag of the present invention. FIG. 2 is a plan view of the medical solution bag housing bag in FIG. A medical solution bag storage bag (hereinafter referred to as a storage bag) 10 is generally formed by fusing the outer periphery of two sheet materials 11 (resin film) into a bag shape with a substantially rectangular outer shape. .

  The storage bag 10 is formed by stacking two sheet materials 11a and 11b and fusing the side fusion parts 12a and 12b, the bottom fusion part 13, and the regulation fusion parts 14a and 14b to form a bag-like accommodation space 15. It is formed. After the medical liquid bag 21 is stored in the storage space 15, the upper opening 16 is formed by fusing the upper opening, and the medical bag 21 containing the medical bag is formed. Each fusion part of such an accommodation bag 10 should just heat-seal (heat seal) sheet material 11a and 11b mutually, for example.

  The sheet material 11 constituting the absorbent bag 10 is formed of a gas barrier property, in particular, a material that does not drop oxygen. For example, ethylene vinyl alcohol copolymer (EVOH), polyvinyl alcohol (PVA), polyvinylidene chloride (PVDC), metaxylene Diamine and adipic acid copolymer (MX nylon, MXDNy), layer made of resin such as poloacrylonitrile (PAN), laminated film containing these (for example, laminated film of polyamide / EVOH / polyamide), A transparent vapor-deposited film obtained by vapor-depositing silica or alumina on a polyester film or polyamide film, and a film coated with a coating agent containing the above-mentioned via resin can be used. Moreover, you may use the packaging bag of the multilayered structure described in the utility model number 2577511. By forming the sheet material 11 with such a gas barrier material that does not allow oxygen or the like to pass through, it is possible to prevent the chemical solution in the medical drug solution bag 21 collected in the collection bag 10 from being oxidized and denatured.

  A medical drug solution bag (contained item) 21 which is an example of an item contained in the containing bag 10 is formed of, for example, a synthetic resin film whose peripheral portion is sealed so as not to be peeled as shown in FIG. The resin used for the synthetic resin film is not particularly limited as long as it is a resin used in the field of medical containers. Specific examples include polyolefin resin, polyamide resin, polyester resin, (meth) acrylic resin, vinyl chloride resin, vinylidene chloride resin, polyethersulfone, and ethylene-vinyl alcohol copolymer. Of these, a low-cost polyolefin resin having excellent transparency, flexibility and hygiene is preferred.

  Examples of the polyolefin resin include high-density polyethylene, medium-density polyethylene, high-pressure low-density polyethylene, linear low-density polyethylene, ethylene-vinyl acetate copolymer and other polyethylene resins, ethylene-α olefin random copolymer, and the like. Olefin elastomers, polypropylene, ethylene-propylene random copolymers, polypropylene resins such as α-olefin-propylene random copolymers, cyclic polyolefin resins, single layers of these mixtures, and multilayer films. Such a resin may be partially crosslinked for the purpose of improving heat resistance. Such a synthetic resin film may have a thickness of 50 to 1000 μm, preferably about 100 to 500 μm.

  The medical drug solution bag 21 may be of a two-component mixed type, for example, and is divided into a first drug solution storage chamber 22 and a second drug solution storage chamber 23. A first chemical solution 24 is stored in the first chemical solution storage chamber 22, and a second chemical solution 25 is stored in the second chemical solution storage chamber 23. The first chemical solution storage chamber 22 and the second chemical solution storage chamber 23 are partitioned by a liquid-tight seal (liquid-tight partition means) 26 that is a liquid-tight partition means that can be separated and communicated.

  The liquid-tight seal 26 is peeled off by pressing the first chemical solution storage chamber 22 and the second chemical solution storage chamber 23 to increase the internal pressure of the first chemical solution storage chamber 22 and the second chemical solution storage chamber 23, and the first chemical solution The storage chamber 22 and the second chemical solution storage chamber 23 are integrated. By peeling off the liquid-tight seal 26, the first chemical liquid 24 and the second chemical liquid 25 stored in the first chemical liquid storage chamber 22 and the second chemical liquid storage chamber 23, respectively, are mixed.

  As a method for forming such a liquid-tight seal 26, for example, a synthetic resin film in which a layer made of a resin composition having different melting points and compatibility, such as a mixture of polyethylene and polypropylene, is formed on the inner surface side of the medical drug solution bag 21. And sealing at a temperature lower than the melting temperature of the high melting point resin. Alternatively, heat sealing is performed at a low temperature and weakly bonded in a semi-welded state, a flexible material previously cross-linked with an electron beam or the like is used for the formation portion of the liquid-tight seal 26, or a strong fusion portion is specified. A method of using a seal bar generated at an area ratio or a method of sandwiching an easily peelable resin tape between two flexible materials is also preferable.

  A discharge port 27 is formed in the first chemical solution storage chamber 22. The discharge port 27 is an outlet for taking out the mixed chemical solution in which the first chemical solution 24 and the second chemical solution 25 are mixed, and the mixed chemical solution is taken out from the medical chemical solution bag 21 by connecting a discharge means such as a dedicated adapter or a needle. It is. Moreover, it may be used as an injection port for injecting another chemical solution into the mixed chemical solution.

  The medical liquid bag 21 having the above-described configuration is, for example, the first chemical liquid storage chamber 22 and the second chemical liquid in the storage space 15 of the medical liquid bag storage bag 10 of the present invention, for example, with a liquid-tight seal 26 as a boundary. What is necessary is just to fold and accommodate so that the storage chamber 23 may face.

  Referring to FIGS. 1 and 2 again, the bottom fusion portion 13 is formed with a predetermined width over the entire length of the containing bag 10 in the width direction. On the other hand, the regulation fusion parts 14 a and 14 b are inclined and fused so that the width of the accommodation space 15 is narrowed toward the bottom fusion part 13 and the distance from the both sides of the accommodation bag 10 is reduced toward the center of the accommodation space 15. It is worn. One end of each of the regulation fusion portions 14a and 14b is connected to the bottom fusion portion 13, and the other end is connected to one end of the side fusion portions 12a and 12b.

  The regulation fusion portions 14a and 14b are formed so as to be inclined with respect to the bottom fusion portion 13 at an internal angle θ of 95 degrees or more and 120 degrees or less, more preferably 105 degrees or more and 115 degrees or less. Further, the width (interval) M between the bottom fusion parts 13 connected to the regulation fusion parts 14 a and 14 b is the length m of the width (bottom side) of the medical drug solution bag 21 to be taken into the collection space 15. They are almost the same or slightly shorter.

  The medical medicinal solution bag (contained item) 21 accommodated in the accommodating space 15 is regulated by the central portion in the width direction of the accommodating bag 10 and is not easily moved from this position by the regulating fusion portions 14a and 14b. Is done. A separation portion 31 is formed between the side sides 21a and 21b of the medical drug solution bag (contained item) 21 and the side fusion portions 12a and 12b.

  Moreover, the substantially triangular area | region divided by the regulation melt | fusion part 14a, 14b and the bottom melt | fusion part 13 is made into the non-fusion area | region 17 where the sheet | seat material 11a and the sheet | seat material 11b are not mutually fused. In the non-fused region 17, a state where the sheet material 11a and the sheet material 11b spread apart from each other is allowed.

  It is easy to tear the storage bag 10 and take out the medical solution bag 21 from the storage space 15 near one end of the upper fusion part 16 to be fused after the medical solution bag 21 is stored in the storage space 15. An opening notch 18 is formed. The cut 18 is formed at a position extending toward the separation portion 31 between the side portions 21a and 21b and the side fusion portions 12a and 12b of the medical liquid bag (containment) 21.

  When the medical chemical solution bag containing bag 10 of the present invention having the above-described configuration is opened and the medical chemical solution bag 21 as an example of a stored item is taken out, as shown in FIG. When the end side of the storage bag 10 is torn toward the bottom fusion part 13 from the notch 18 formed near one end of the sheet, a tear line C is formed from the notch 18 toward the separation part 31.

When the tear line C is formed, the accommodation bag 10 is configured such that the accommodation 21 is regulated by the center portion in the width direction of the accommodation space 15 by the regulation fusion portions 14 a and 14 b and the notch 18 extends toward the separation portion 31. By being formed at the position, the tear line C is formed large up to the vicinity of the bottom of the storage bag 10 without interfering with the storage bag 10. As a result, the storage bag 10 is formed with a large extraction opening S sufficient to easily take out the medical drug solution bag 21 as the stored item.

  As a result, it is possible to easily and reliably take out the medical drug solution bag 21 as the collected product from the medical drug solution bag collection bag 10 without damage. In addition, the collection bag 10 of the present invention prevents pinholes from being generated by rubbing even if vibration is applied to the medical solution bag collection bag 10 during transportation, for example. In other words, due to manufacturing problems, the medical solution bag is collected in a large collection bag and enclosed in a box smaller in width than the collection bag in order to avoid falling inside the transport box. A large number of wrinkles and corners are formed in the collection bag.

  If vibration during transportation is applied in such a state, pinholes are likely to be generated by rubbing a large number of ridges and corners inside the shipping box. However, by forming a substantially triangular non-fused region 17 defined by the regulation fused portions 14a and 14b and the bottom fused portion 13 on both sides of the bottom portion of the collecting bag 10, a sheet is formed in the non-fused region 17. Since corners and wrinkles are generated in the non-fused region between the material 11a and the sheet material 11b, it is possible to prevent a pinhole from being formed in the collection space, and to effectively prevent a pinhole from being rubbed due to vibration in the collection space.

  If such a non-fused region 17 is completely fused as in the prior art, this portion becomes hard, and the original purpose of generating corners and wrinkles in the non-fused region 17 cannot be achieved, and expropriation is achieved. A strong crease or corner is easily formed in the space, and pinholes are easily generated from here. However, by forming a substantially triangular non-fused region 17 at the bottom as in the present invention, as described above, corners and wrinkles are generated in the non-fused region 17 to absorb the wrinkles that are formed in the collection space 15. Thus, it is possible to eliminate wrinkles and corners, and as a result, it is possible to prevent deterioration due to oxidation of the first chemical liquid 24 and the second chemical liquid 25 in the medical chemical liquid bag 21 due to pinholes.

  In the above-described embodiment, the two-liquid mixed type medical liquid bag 21 is cited. However, the medical liquid bag accommodated in the storage bag 10 of the present invention is not limited to this and is not limited to this. The present invention can be similarly applied to a one-pack type medical solution bag of one room and a multi-solution mixed type medical solution bag having three or more rooms. Furthermore, the accommodation accommodated in the accommodation bag 10 of the present invention is not limited to the medical solution bag, and can be applied to general various accommodations.

  The applicant has verified the effect of the present invention. In the verification, as shown in FIG. 5, 100 storage bags each having cuts at the positions A to F in the upper fused portion were prepared. In each of the storage bags, a medical solution bag was stored in advance as a stored item. The sample in which the cut A and the cut B are formed is an example of the present invention in which the cut is formed at a position corresponding to the upper portion of the separation portion formed between the side of the medical drug solution bag and the side fusion portion of the containing bag. is there. The sample in which the cuts C to F are formed is a conventional comparative example in which the cut is formed at a position corresponding to the upper part of the medical liquid bag from the center rather than the separation part.

A plurality of subjects opened the samples in which the cuts were formed at the respective positions, and verified the openability. Such verification results are shown in FIG. In addition, the meaning of the rank display of openability in FIG. 6 is as follows.
A: Can be opened without problems.
B: It tears in an internal direction and a tear line hits a contained thing.
B1: Can be opened with a little force.
B2: Even if force is applied, no further opening is possible.
C: Ripped to the outside direction and cut as it was from the side fusion part.
C1: The contents can be taken out.
C2: The contents can be taken out while being caught slightly.
C3: The contents cannot be taken out.

  According to the results shown in FIG. 6, it was found that the storage bag of the present invention has greatly improved unsealing properties and can easily take out the stored items. On the other hand, in the comparative examples, all of them had difficulty in opening, and the result was that the contents could not be taken out with a considerable number of samples. The effect of the storage bag of the present invention was verified.

FIG. 1 is an external perspective view showing a storage bag of the present invention. FIG. 2 is a plan view showing the accommodation bag of the present invention. FIG. 3 is an external perspective view showing a medical liquid bag that is an example of a container. FIG. 4 is an explanatory view showing the operation of the containing bag of the present invention. FIG. 5 is a plan view showing a sample used for verification of the present invention. FIG. 6 is a graph showing the verification results of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Storage bag 13 Bottom fusion | fusion part 14a, 14b Restriction fusion | fusion part 15 Storage space 17 Non-fusion area | region 18 Incision 21 Medical liquid bag (containment)
21a, 21b side 31 separation part

Claims (3)

Two sheets of material are fused to each other at the ends to form a bag, and a storage bag for storing a stored item in an internal storage space,
The storage bag has a substantially rectangular outer shape, and has a side fusion part in which two sheet materials are fused on at least a part of both side surfaces, and the entire width of the packaging bag at the bottom of the accommodation space. Formed in a fused bottom fusion part, a regulation fusion part that regulates the item in the central part of the accommodation space that is spaced apart from the side fusion part, and an upper fusion part above the accommodation bag And a notch for opening extending toward the separation portion formed between the side edge of the accommodation and the side fusion portion restricted by the central portion ,
The accommodation bag is characterized in that the regulation fusion portion is inclined and fused so as to narrow the width of the accommodation space toward the bottom fusion portion . The accommodation bag according to claim 1 , further comprising a substantially triangular non-fusion region partitioned by the regulation fusion portion and the bottom fusion portion. The accommodation bag according to any one of claims 1 to 2 , wherein the container is a medical solution bag containing a medical solution.

Images