JP2002000634A - Medical heating agent storage bag - Google Patents

Abstract

(57) [Summary] [Description] A medical thermal agent storage bag comprising a non-breathable outer bag 1 and a breathable inner bag 2 containing a heating agent 11 that generates heat in the presence of air, the surface of the breathable inner bag Is a laminate of a porous synthetic resin film 4 and a synthetic resin non-woven fabric 3 having an air permeability of 30,000 to 50,000 seconds / 100 cc, and a back surface of a gas-permeable inner bag having a non-air-permeable synthetic resin film. 5 and a nonwoven fabric 6 made of synthetic resin.
A medical thermal agent storage bag characterized by applying a release film 8 thereon. [Effect] In a thermal medical device based on a heating agent that generates heat by air, the relationship between the air permeability of the air-permeable inner bag and the heat generation temperature is examined, and the air permeability is 30,000 to 50,000 seconds /.
If it is in the range of 100 cc, heat is generated at an appropriate temperature of 38 to 45 ° C., and there is an excellent effect that there is no concern about low-temperature burns.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a storage bag for a heating agent which generates heat in the presence of air, that is, a storage bag for a medical heating agent.

[0002]

2. Description of the Related Art A disposable body warmer using an exothermic agent which generates heat in the presence of air (oxygen) is known from Japanese Patent Publication No. Hei 5-30432 and many patent publications or utility model publications. ing.

[0003] However, there is hardly any mention of the relationship between the heat generation temperature of the heating element and the amount of ventilation, and when used for a thermal medical device of a type in which a breathable inner bag having the same air permeability as a disposable body warmer is directly attached to the skin. With the danger of cold skin burns.

[0004] The present invention provides a thermal medical device of the type that can be directly applied to the skin without excessively raising the temperature by adjusting the ventilation rate of the inner bag and without fear of low-temperature burns.

[0005]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and comprises a non-breathable outer bag (1) and a breathable inner bag (11) containing a heating agent (11) which generates heat in the presence of air. 2)
A medical thermal agent storage bag comprising a laminated body of a porous synthetic resin film (4) and a synthetic resin nonwoven fabric (3) having a gas permeability of 30,000 to
50,000 sec / 100 cc, the back of the air-permeable inner bag is a laminate of a non-permeable synthetic resin film (5) and a synthetic resin non-woven fabric (6), and a plaster (adhesive) on the non-woven fabric side
(7) is a medical warming agent storage bag, characterized in that a release film (8) is stacked thereon.

[0006] The air permeability indicates the amount of air permeation on the surface of the air-permeable inner bag, and is measured by an Oken (Oji Paper Co., Ltd.) type air permeability measuring device (Oken type air permeability manufactured by Asahi Seiko Co., Ltd.). Measured by a dedicated machine) and the number of seconds (seconds / 10
0 cc).

The non-breathable outer bag is for completely shielding the breathable inner bag from outside air before use, and is made of a heat-fusible thermoplastic resin such as polyethylene, polypropylene, vinyl chloride resin, EVA and PET. It may be a thin layer (200 to 50μ), and a laminate of these may be used.

As the porous membrane on the surface of the gas-permeable inner bag, polyethylene having fine and continuous pores on the surface and inside,
Any thermoplastic sheet or film made of polypropylene, ethylene-vinyl acetate copolymer, polyurethane or plastics or rubbers obtained by flexibly modifying them may be used.

The air permeability of the surface of this air-permeable inner bag is 30,0.
It is necessary to be 100 to 50,000 seconds / 100 cc, and if it is higher than this value, sufficient heat generation does not occur and it is not sufficient as a thermal medical device. If it is lower than this value, the heat generation temperature becomes too high and low-temperature burns occur. There is a risk.

That is, if the air permeability is in this range, the temperature of the thermal medical device is kept in the range of 38 to 45 ° C., and the thermal effect is sufficient and there is no fear of low-temperature burns. And the duration can be maintained at 37 ° C. or more for 5 hours or more.

The non-breathable synthetic resin film on the back of the breathable inner bag may be the same as the thermoplastic resin of the outer bag described above, and the synthetic resin nonwoven fabric is the same as the synthetic resin nonwoven fabric on the inner bag surface. Is good enough. The laminates on the front and back sides of the inner bag are preferably combined so that the non-woven fabric is on the outside.

The adhesive applied to the back side of the nonwoven fabric can be, for example, a plaster containing ester gum or the like, but can be directly applied to the skin and can be easily removed after use. Any object may be used. The thickness may be 120 to 20 μm, and the application area may be 50% or more, preferably 70% or more.

The release film may be any of conventional release films such as a polyethylene laminated film, and the thickness thereof is determined by each material.

The exothermic agent that generates heat in the presence of air includes:
For example, it is composed of iron powder, water, activated carbon, vermiculite, wood flour, and salts, and may be of any other known formulation, such as the exothermic agent disclosed in Japanese Utility Model Publication No. 5-30432.

When using the medical thermal agent storage bag of the present invention, open the outer bag, take out the inner bag, peel off the release film,
It is applied directly to the skin with a plaster (adhesive) to warm the affected area.

Although the exothermic agent generates heat by air, the amount of air passing through the surface of the inner bag is reduced by an air permeability of 30,000 to 50,000 seconds /.
Since the temperature is adjusted to 100 cc, the temperature is maintained at an appropriate temperature of 38 to 45 ° C., and there is no danger of a low-temperature burn. In addition, effects such as relief of neuralgia and muscle pain, recovery from fatigue, and activation of gastrointestinal function can be expected.

[0017]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a part of a non-breathable outer bag of a medical thermal agent storage bag used by sticking directly to the skin according to the present invention, and FIG. 2 is a longitudinal direction along line AA in FIG. Is a partially enlarged explanatory cross-sectional schematic view when cut at a right angle.

In FIG. 1 and FIG. 2, reference numeral 1 denotes a laminate (125 mm long, 17 mm wide) of a vinylidene chloride film having oxygen barrier properties and a copolymer of polyethylene and ethylene-vinyl acetate.
(0 mm, 63 μm in thickness), and the four end portions 9 (about 5 mm in width) are completely heat-sealed with a non-breathable outer bag.

2 is a breathable inner bag (length 100 mm, width 133)
mm), the surface of which is made of a synthetic resin nonwoven fabric 3 (40 g /
m ² ) and a porous polyethylene film 4 (70 μ) as a porous synthetic resin film having a pore size of 5 μm.
And the air permeability is 30,000-50,000 seconds /
100cc (R size).

On the other hand, an outer bag (95 mm long,
It was made in the same manner as the R size one using 130 mm in width and 63 μ in thickness) and an inner bag (70 mm in length and 100 mm in width).

The porous polyethylene film 4 is made of various air permeability by stretching polyethylene containing calcium carbonate, and a thermal medical device using them is made to generate heat, and the heat generation temperature and duration are measured. did.

The back of the air-permeable inner bag 2 is a laminate of a thin layer 5 of non-air-permeable thermoplastic resin (composed of 30 μm of Loden polyethylene film, 15 μm of polyethylene and PET) and a nonwoven fabric 6 of synthetic resin (30 g / m ² ). , Plaster (adhesive) 7
(80 μ) and a release film 8 (PET film). Heating agent 11 in inner bag is 2 for R size
0g ± 20%, 10g ± 20% for medium size. Reference numeral 10 denotes a heat seal portion of the inner bag.

The plaster (adhesive) 7 uses polystyrene / polyisoprene / polyisostyrene block copolymer and polyisoprene as the base material, and the ester gum HG (hydrogenated rosin and esterified with glycerin) as the plaster (adhesive) And a skin protectant (tocopherol acetate), a softener (liquid paraffin), and a filler (titanium oxide and silicon dioxide).

The composition of the exothermic agent 11 is as follows. Iron powder 50-60wt%, activated carbon 5-10wt
%, Vermiculite 5-10wt%, wood flour 0-5wt
%, Water 20-25 wt%, salts 2-5 wt%.

Next, the results of an experiment conducted on the relationship between air permeability and heat generation are shown in Table 1. Heat generation is JISS4100-1996
The measurement was carried out according to the standard measuring device defined in the above. The measured values are average values of 10 samples.

[0026]

[Table 1]

As described above, the air permeability is 50,000 seconds / 10
If it is 0 cc or more, heat generation is insufficient, and it is not suitable as a thermal medical device. On the other hand, if it is less than 30,000 seconds / 100 cc, the heat generation temperature becomes too high, and in some cases, there is a risk of low-temperature burns.

[0028]

The relationship between the air permeability of the air-permeable inner bag and the heat generation temperature of a heat-treating medical device based on a heat-generating agent that generates heat by air is examined, and the air permeability is 30,000 to 50,000.
In the range of seconds / 100 cc, heat is generated at an appropriate temperature of 38 to 45 ° C., and there is an excellent effect that there is no concern about low-temperature burns.

[Brief description of the drawings]

FIG. 1 is a perspective view of a part of a non-breathable outer bag of a medical thermal agent storage bag of the present invention.

FIG. 2 is a partially enlarged explanatory cross-sectional schematic view taken along a line AA of FIG. 1 at a right angle to a longitudinal direction.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Non-breathable outer bag 2 Breathable inner bag 3 Synthetic resin nonwoven fabric 4 Porous synthetic resin film 5 Non-breathable synthetic resin film 6 Synthetic resin nonwoven fabric 7 Glue (adhesive) 8 Release film 9 Heat of outer bag Seal part 10 Heat seal part of inner bag 11 Heat generating agent

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Ryutaro Marui 1-2-4, Hirano-cho, Chuo-ku, Osaka City Inside Takabishi Chemical Co., Ltd. F-term (reference) at Kaizuka Plant of Kagaku Co., Ltd.

Claims (1)

[Claims] 1. A medical warming agent storage bag comprising a non-breathable outer bag (1) and a breathable inner bag (2) containing a heating agent (11) that generates heat in the presence of air. The bag surface is a laminate of a porous synthetic resin film (4) and a synthetic resin nonwoven fabric (3), and its air permeability is 30,000 to 50,000.
00 seconds / 100cc (Oken type air permeability measurement device)
The back of the breathable inner bag is a laminate of a non-breathable synthetic resin film (5) and a non-woven fabric made of synthetic resin (6), and a plaster (adhesive) (7) is applied to the non-woven fabric side, and the mold is released thereon. A medical warming agent storage bag characterized by stacking films (8).