JP2004073723A - Sterilizing bag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sterilizing bag which is suitable for storing medical equipment with a sharp point such as a knife, forceps and can effectively suppress the occurrence of an undesired accident by contact with the sharp tip end part. <P>SOLUTION: This sterilizing bag 10 is prepared by adhering side edge parts and the lower end parts or the neighborhood thereof of a gas permeable base material 12 and a synthetic resin film 14 and has an opening on its upper part. At the lower end part or the neighborhood thereof of the sterilizing bag 10, a side face film 14 made of a synthetic resin is mountain-and valley-folded to form a swelling part 16. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a sterilization bag excellent in handleability, and more particularly, to a sterilization bag suitably used for storing and sterilizing a medical device having a sharp end.
[0002]
[Prior art]
Instruments used for surgery and treatment must be sterilized before use. If the contents to be stored are tangible solids such as mechanical parts and various instruments, peel off and open. A peel-open method and an easily tearable film are employed. For example, as a sterilization method performed in a hospital or the like, an object to be sterilized such as a scalpel or forceps is placed in a sterilization bag having an area at least gas-permeable and impermeable to bacteria, sealed, and then heated to a high temperature. Sterilization using steam, plasma, ethylene oxide gas (EOG) or the like. The sterilized instrument is stored in this packaging bag until it is used for surgery or the like, and is opened and used for surgery or treatment. For this reason, sterile packaging bags should be easily opened even if gloves are used by doctors and practitioners in hospitals, so that thin rectangular bodies such as two rectangular sheets or films on both sides (hereinafter referred to as “films”) The film is manufactured using an easily tearable (easy to tear open) film. When opening, a tearing method or a so-called peel open method of peeling two films together is used. It is common that it is.
[0003]
Conventionally, a medical instrument having a sharp tip such as a scalpel or forceps is put into such a sterilization bag and sterilized, and then, for easy use, the bag is used with the tip standing down in a container such as a forceps stand. Often offered to. Sterilization bags are generally made of two films peelably heat-sealed, as described above, so that they can be used when storing such medical devices in sterilization bags or after sterilization. When the body is put into the forceps stand, there is a problem that the distal end portion comes into contact with the heat-sealed portion at the lower end of the sterilization bag, and the heat-sealed portion is peeled off and opened. When one of the gas-permeable substrates is paper and the other is a synthetic resin film, if sterilization requiring a high temperature during sterilization, such as autoclave sterilization (AC sterilization), only the synthetic resin film shrinks. The medical instrument tends to curl, and the tip of the medical instrument easily comes into contact with the paper base material at the lower end of the sterilization bag, and the paper base material tends to be damaged.
[0004]
[Problems to be solved by the invention]
The present invention has been made to solve such a problem, and an object of the present invention is to store a medical instrument having a sharp tip such as a scalpel or forceps and sterilize it by applying a temperature. It is still another object of the present invention to provide a sterilization bag that can effectively suppress occurrence of an undesired opening accident due to contact of a sharp tip.
[0005]
[Means for Solving the Problems]
The sterilization bag of the present invention is a sterilization bag formed by bonding a gas-permeable base material and side and lower portions of a synthetic resin film, leaving an opening at an upper portion, and a lower end portion of the sterilization bag or in the vicinity thereof. In addition, a swelling portion formed by folding a synthetic resin film into a mountain and a valley is provided.
The sterilization bag of the present invention according to claim 2 is a sterilization bag formed by bonding a gas-permeable base material and a side portion and a lower portion of a synthetic resin film while leaving an opening at an upper portion. The bag has a bulging portion formed by mountain-folding a synthetic resin film at the lower portion, and a folding line obtained by mountain-folding the side film is located at the lowermost end.
The side edge of the bulging portion is bonded obliquely so that the lower end side is shorter than the opening side, and the inclination of the oblique bonding portion is different from that of the side edge bonding portion of the bulging portion. In a preferred embodiment, the angle of intersection with the folding line formed by mountain-folding the side film made of the synthetic resin is in the range of 120 ° to 150 °.
The outside of the side edge bonding portion of the bulging portion may be cut and removed. These sterilization bags are suitably used for sterilizing one or more medical instruments selected from the group consisting of scalpels, tweezers, forceps and scissors.
[0006]
As described above, the adhesive portion of the sterilization bag is heat-sealed or lightly bonded to such an extent that it can be easily peeled off in order to make it easy to take out the inside of the bag during use. When the metal comes into direct contact with the heat-sealed portion, the tip enters the heat-sealed region so as to pierce the heat-sealed portion, and peels off the fused portion. In the present invention, by providing a swelling portion of a synthetic resin film at the lower portion of the sterilization bag, when a medical instrument having a sharp tip is inserted, the tip is held at the mountain-folded portion of the swelling portion and adhered. Since there is no contact with the part, undesired opening of the bonding part can be effectively suppressed. Also, when one of the base materials is paper and the other is a synthetic resin film, if the sterilization requiring a high temperature during sterilization such as autoclave sterilization (AC sterilization), only the synthetic resin film shrinks and curls, The tip of the instrument easily comes into contact with the paper base material at the lower end of the sterilization bag, and the problem that the paper base material is damaged does not occur. Here, by being fused obliquely so that the lower end side of the side edge of the bulging portion is narrowed, the bulging portion is easy to open, and the lower end can easily form a town. The tip of the medical device can be more effectively prevented from reaching the adhesive portion at the corner, or the weight of the medical device or the external force being concentrated on the corner of the packaging bag via the tip of the medical device. .
[0007]
The sterilization bag of the present invention is a synthetic resin in which one substrate is formed of a gas-permeable substrate, for example, paper or nonwoven fabric (hereinafter, appropriately referred to as sterilized paper), and the other substrate is formed into a film. Since it is composed of a film, it has excellent sterilization efficiency and adhesiveness, but from the viewpoint of the visibility of the object to be sterilized, the synthetic resin film is preferably transparent.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail.
First, a preferred embodiment of the sterilization bag of the present invention will be described with reference to examples. The sterilization bag of the present invention is obtained by adhering two substrates (side films) in a releasable manner. The adhesion between the two substrates is based on one of the gas-permeable substrates such as paper ( (Sterile paper) can be easily achieved by using the other as a synthetic resin film having heat fusibility. In order to control adhesive strength and peelability more reliably, use an easy peel (easy peeling) adhesive, or use a nonwoven fabric of thermoplastic resin for one substrate and develop appropriate adhesive strength as the other substrate A known method such as combining a thermoplastic transparent synthetic resin film, laminating a seal layer on sterilized paper without impairing gas permeability, and heat-sealing (heat-sealing) the two. Can be adopted.
[0009]
The sterilization paper used in the sterilization bag of the present invention is usually sterilized by using high-temperature steam, ethylene oxide gas (EOG), plasma, or the like. It must be made of a material that does not allow bacteria to permeate. As a material of such a sterilized paper, paper may be used, but it is preferable to select and use a moisture non-adsorbing material such as polyester, polyvinyl chloride, polyethylene, polypropylene, and fluorine. For example, nonwoven fabrics made of gas-permeable polyethylene or polypropylene may be used.
As the other synthetic resin film, a film formed by melt-extruding, casting, or calendering the synthetic resin is used from the viewpoints of cost, strength, and visibility of the contents. Although there is no particular limitation on these synthetic resin films, preferred synthetic resins include synthetic resins having a heat-fusing property, since the operation is easy at the time of bonding. Thus, polyolefins such as polyethylene (PE) and polypropylene (PP) and polyvinyl chloride are preferred. Since these synthetic resin films having heat fusibility only need to have heat fusibility on one side, a biaxially stretched film such as polyethylene terephthalate (PET), nylon, or PP is laminated on the other side. It is preferable to keep the strength because the strength against piercing and impact is improved. The biaxially stretched film may be laminated in two or more layers.
The thickness of the synthetic resin side film can be appropriately selected according to the purpose, but is generally in the range of 30 to 100 μm.
[0010]
FIG. 1 is a front view (A) and a cross-sectional view (B) showing a preferred embodiment of the sterilization bag of the present invention.
The gas permeable substrate (side film) 12 of the sterilization bag 10 is made of sterile paper. On the other base material, that is, on the side film 14 made of synthetic resin, a bulging portion 16 is formed by folding the film 14 outward and outward. The upper end 18 of the sterilization bag 10 is opened to accommodate an object to be sterilized, and the lowermost end is sealed with a sterilized paper 12 and a synthetic resin film 14 by heat sealing. The lowermost heat-sealed portion 20 is formed in a region projecting below the bulging portion 16. As shown in FIG. 1A, the side edges of the bulging portion are obliquely fused so that the lower end side becomes narrower.
In the bulging portion formed by mountain-folding the synthetic resin film, the folding line of the film is preferably located on the same line as the lowermost end of the sterilization bag or below the same. However, when forming a bag by forming a heat-sealed portion at the lowermost portion of the bag, the lowermost portion of the bulging portion may be an obstacle in the process of forming the fused portion, and consideration should be given to ease of manufacturing. Then, in this shape, it is preferable that the lowermost end is located above the heat-sealed portion by the width of the fused portion.
It is preferable that the oblique bonding portion 22 on the side edge portion of the bulging portion is bonded obliquely so that the lower end side is shorter than the opening side 21. More specifically, the bulging portion has The side edge bonding portion is obliquely bonded at an angle such that the intersection angle (indicated by θ in FIG. 1A) between the folding line formed by mountain-folding the synthetic resin film is in the range of 120 ° to 150 °. In this case, even if the tip of the stored medical device fits in the corner of the packaging bag, it is difficult to stay in the corner, so the tip of the medical device may be in the corner of the packaging bag. In this case, it is possible to avoid attacking the side edge bonding portion. And, by such a configuration, the bulging portion is easy to open, and the lower end thereof can easily form a town, so that the tip of the medical device reaches the bonding portion at the corner, or It is preferable because the self-weight and external force of the medical device can be more effectively prevented from concentrating on the corner of the packaging bag via the distal end of the medical device. In the present embodiment shown in FIG. 1, the outside of the obliquely bulging portion side end heat-sealed portion 22 is cut and removed. However, if such an oblique bonding region 22 is provided, the side end is not necessarily removed. It does not need to be cut off.
[0011]
In the sterilization bag 10 of the present embodiment, when the opening at the upper end is opened in order to put the material to be sterilized, the bulging portion 16 forms a town, and the surface of the synthetic resin film is combined with the smoothness of the material to be sterilized. Is guided to the side of the bulging portion 16 made of a synthetic resin film, and is held in contact with the mountain-folded end of the bulging portion 16.
[0012]
The sterilization bag of this embodiment can be easily manufactured by a conventional method. FIG. 2 is a schematic configuration diagram showing a process of manufacturing the sterilization bag of the first embodiment. One of the substrates, that is, the sterilized paper 12 is supplied from a roll 24, and the synthetic resin film 14 is supplied from a roll 26. When the film 14 supplied from the roll 26 passes through the folding plate portion 28, the side end is mountain-folded or valley-folded so that the N-shaped bulging portion 16 is larger than the outermost end of the synthetic resin side film. Formed inside. That is, the mountain fold at the tip of the bulging portion 16 is formed inside the outermost end of the synthetic resin film as shown in FIG. The sterilized paper 12 and the synthetic resin film 14 on which the bulging portion 16 is formed are layered, and the layer portion is located on the side where the bulging portion 16 is formed, and is located at an end of the bulging portion 16. One end of the sterilized paper 12 and one end of the synthetic resin film 14 are heat-sealed by a heating means such as a heat seal bar 28 in the overlapping portion where one synthetic resin film protrudes. The other end is an opening for inserting a member to be sterilized.
[0013]
After the heat-sealing portion 20 corresponding to the lowermost end of the sterilization bag 10 is provided in this manner, the oblique fusion portion on the side of the bulging portion and the heat-fusion portion on the side end of the sterilization bag are formed by a conventional method. The side end is cut by a cutter to obtain a sterilization bag 10. As shown in FIG. 2, the fusion and cutting of the side edges may be performed simultaneously by using a cutter 29 having a fusion means and a cutting means, and the fusion and cutting may be performed. Can be sequentially performed by another member.
[0014]
FIG. 3 is a front view (A) and a sectional view (B) showing another preferred embodiment of the sterilization bag of the present invention.
The sterilizing paper 12 and the synthetic resin film 14, which are the gas permeable substrates used for the sterilization bag 30, may be the same as those in the first embodiment. In this embodiment, the bulging portion 32 formed by mountain-folding the film 14 outward has a fold line located at the lowermost end of the sterilization bag 30, and the bulging portion 32 is formed between the sterilizing paper 12 and the synthetic resin film 14. The bonding portion 34 is located on a side surface portion near the lower end of the sterilization bag 30. In this embodiment, since the lower end of the sterilization bag 30 is formed of the synthetic resin film 14 and the heat-sealing portion 34 is located on the side surface of the bag 30, even if a material having a sharp tip is supplied, the tip is It is stored smoothly without being caught by the heat-sealed portion 34, is held by the swelling portion 32 of the synthetic resin film, and there is no fear of contacting the adhesive region and its vicinity in the direction in which the fused portion 34 is peeled off.
[0015]
FIG. 4 is a schematic configuration diagram showing a process of manufacturing the sterilization bag of the second embodiment. One substrate, sterile paper 12, is supplied from a roll 24, and the other synthetic resin film 14 is supplied from a roll 36. When the film 14 supplied from the roll 36 passes through the folding plate portion 38, the side end is mountain-folded to form a U-shaped bulged portion 32 at the outermost end of the synthetic resin film. That is, the mountain fold at the tip of the bulging portion 32 is located at the lowermost end of the sterilization bag 30, as shown in FIG. Is formed. Although the synthetic resin film 14 folded so as to form the sterilized paper 12 and the bulging portion 32 is overlaid, the other synthetic resin film 14 may be deformed due to heat generated when the heat-sealed portion 34 is formed. The sterilized paper 12 at the end of the synthetic resin film 14 is shaped so as to sandwich the heat insulation plate between the U-shaped bulging portions 34 so that undesired fusion does not occur. The portion to be adhered is overlaid with the sterilized paper 12, and in that region, the end of the synthetic resin film 14 that is mountain-folded in a U-shape and the sterilized paper 12 are thermally fused by a heating means such as a heat seal bar 28. The other end is an opening for inserting a member to be sterilized.
[0016]
In this way, the lowermost end of the sterilization bag 30 becomes the mountain-folded portion of the bulging portion 32 of the synthetic resin film 14, and the folded end portion of the synthetic resin film 14 and the sterilized paper 12 are bonded to each other, and then bulged by a normal method. After forming the oblique fusion portion at the end of the protruding portion and the heat fusion portion at the side end of the sterilization bag, the side end is cut with a cutter to obtain the sterilization bag 30. As shown in FIG. 4, the fusion and cutting of the side edges may be performed simultaneously by using a cutter 29 having a fusion means and a cutting means, as shown in FIG. Can be sequentially performed by another member as in the first embodiment.
[0017]
In the second aspect, the tip of the thrown object to be sterilized is held by the synthetic resin film at the lowermost end of the sterilization bag. When a large capacity is taken for the purpose of insertion or the like, a gusset may be provided at the side end of the sterilization bag.
[0018]
The shape of the sterilization bag of the present invention is not limited to this. For example, the synthetic resin film does not necessarily need to be composed entirely of one film, but may be composed of a plurality of films joined together. With such a configuration, the bottom surface where the sharp tip of the object to be sterilized is easily contacted, or in the vicinity thereof, is obtained by laminating two or more layers of a high-strength resin film such as PET or nylon as a base film and has excellent strength. A gas-permeable nonwoven fabric can be used, and a single-layer high-strength resin film can be used in other portions, so that a configuration advantageous in cost can be obtained. Further, by configuring in this manner, using a well-known, general-purpose bag making machine for standing pouches, as opposed to valley folds of the standing pouches, the bottom film is mountain-folded to form bulges. Since it can be folded, inserted and fused, it also has the advantage of being easily molded.
In the sterilization bag of the present invention, when an object to be sterilized is inserted, its tip is held by the bulging portion of the synthetic resin side film, and does not enter the bonding portion between the two side films. It is possible to effectively prevent undesired breakage and opening of the bag when inserting and holding an object to be sterilized having a sharp tip such as forceps, scissors, etc., so that the application range is wide.
[0019]
【Example】
Hereinafter, the present invention will be described in detail with reference to specific examples, but the present invention is not limited thereto.
(Example 1)
The height of the bulging portion 16, that is, the overlap of the folded portion is 40 mm at a position 50 mm from one end of the gas-permeable base material (side film) 12 made of a high-density polyethylene nonwoven fabric having a width of 300 mm. The N-shaped folded biaxially stretched PET / 15 μm biaxially stretched nylon / 30 μm PP synthetic resin film 14 is laminated, and a 10 mm wide heat seal is formed on the side surface on which the bulging portion is formed. Heat welding was performed using a bar. Next, both sides of the bulging portion are heat-sealed obliquely with a width of 10 mm so that an intersection angle with a folding line formed by mountain-folding the synthetic resin film is 45 °, and then folding lines are formed on both sides. A heat-sealed portion of 10 mm is formed at an interval of an inner width of 160 mm so as to be perpendicular to the center, and a central portion thereof and an outer portion of the obliquely-sealed portion of the bulging portion are cut to have a width of 170 mm, and A sterilization bag 10 having a size of 300 mm as shown in FIG. 1 was obtained.
[0020]
When the opening end of the sterilization bag 10 was opened by hand and two forceps with sharp tips were thrown in, the tips of the forceps were formed by mountain-folding a bulging portion formed of a synthetic resin side film. It was inserted so as to be in contact with the folded line, and no damage to the sterilization bag due to this insertion was observed.
[0021]
【The invention's effect】
According to the sterilization bag of the present invention, even when storing a medical instrument having a sharp tip such as a scalpel or forceps, it is possible to effectively suppress the occurrence of an undesired opening accident due to the contact of the sharp tip. Play.
[Brief description of the drawings]
FIG. 1A is a front view showing a first embodiment of a sterilization bag of the present invention, and FIG. 1B is a cross-sectional view thereof.
FIG. 2 is a schematic configuration diagram illustrating a process of manufacturing the sterilization bag according to the first embodiment of the present invention.
FIG. 3 (A) is a front view showing a second embodiment of the sterilization bag of the present invention, and FIG. 3 (B) is a sectional view thereof.
FIG. 4 is a schematic configuration diagram showing a step of manufacturing a sterilization bag according to the second embodiment of the present invention.
[Explanation of symbols]
10, 30 sterilization bag 12 gas-permeable base material (sterile paper)
14 Synthetic resin film 16, 32 Swelling part

Claims (6)

A sterilization bag comprising a gas-permeable base material and a side portion and a lower portion of a synthetic resin film adhered, leaving an opening at an upper portion,
A sterilization bag having a bulge formed by folding a synthetic resin film into a mountain fold and a valley at or near a lower end of the sterilization bag. A sterilization bag comprising a gas-permeable base material and a side portion and a lower portion of a synthetic resin film adhered, leaving an opening at an upper portion,
A sterilization bag having a bulging portion formed by mountain-folding a synthetic resin film at a lower portion of the sterilization bag, wherein a folding line obtained by mountain-folding the side film is located at the lowermost end. The sterilization bag according to claim 1, wherein a side edge of the bulging portion is obliquely adhered such that a lower end side is shorter than an opening side. The sterilization bag according to claim 1, wherein an intersection angle between a side edge bonding portion of the bulging portion and a folding line obtained by mountain-folding the side film made of the synthetic resin is in a range of 120 ° to 150 °. The sterilization bag according to claim 3 or 4, wherein the outside of the side edge bonding portion of the bulging portion is cut and removed. The sterilization device according to any one of claims 1 to 5, wherein the sterilization bag is for sterilizing one or more medical instruments selected from the group consisting of a scalpel, tweezers, forceps and scissors. bag.

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