JP5833289B2 - Chemical solution applicator and chemical solution application kit - Google Patents

Description

  The present invention relates to a chemical solution applicator used for applying a chemical solution such as a disinfectant to an affected part, and a chemical solution application kit, i.e., the chemical solution applicator is placed in a container so that the chemical solution can be immediately applied to the affected part when opened It is related with the chemical | medical solution application kit accommodated in.

  When applying a chemical solution such as a disinfectant to the affected area, it is common to apply a chemical solution to a cotton swab or cotton ball. However, since it is cumbersome to prepare and impregnate the chemical solution separately every time the chemical solution is applied to the affected part, a cotton ball or a cotton swab impregnated with the chemical solution is enclosed in a container and provided as a chemical solution application kit. It has been proposed.

  For example, in Patent Document 1, a plurality of cotton balls impregnated with a chemical solution are respectively inserted into storage recesses formed in a container, and the opening of each storage recess is sealed with a seal member. A kit is disclosed.

  Patent Document 2 discloses a coating liquid-impregnated cotton swab provided with a coating liquid-impregnated portion at the end of a shaft body, a concave portion that accommodates the coating liquid-impregnated portion, and a shaft that is continuous from the concave portion and adjacent to the coating liquid-impregnated portion. There is disclosed a chemical solution coating kit including a cup member in which a groove portion for accommodating a body is formed and a covering film that is disposed on the opening surface of the cup member and seals the inside of the recess.

Claim 1 and FIG. 1 of Japanese Utility Model Laid-Open No. 62-172449. Claim 1 and FIG. 1 of Japanese Patent Laid-Open No. 2007-319535

  The chemical solution applicator that has been used in the past is not sufficient to release the chemical solution after absorbing the chemical solution (hereinafter also referred to as “liquid release amount”), so apply sufficient chemical solution to the impregnated chemical solution amount. However, it was difficult. In order to solve this problem, if a large amount of chemical solution is accommodated in the container together with the applicator, the amount of the chemical that can be absorbed and retained by the applicator (hereinafter also referred to as “amount of liquid embracing”) is not sufficient. When the swab is picked up, the medicinal solution dripping down, a lot of medicinal solution remains after use, causing waste, the shaft gets dirty with the medicinal solution, or the seal part is sealed This causes problems such as the chemical solution adhering to the surface and hindering sealing.

  Therefore, the inventor of the present invention has proposed that a chemical application part is provided by forming a chemical application part from a cellulose sponge formed by compression molding only in the thickness direction, and fixing a resin shaft to the chemical application part. . By forming the chemical solution application part from cellulose sponge formed by compression molding only in the thickness direction, the chemical solution application amount of the chemical solution application part is increased and the liquid discharge amount is increased, and the minimum required chemical solution is impregnated in the chemical application part. In this way, the chemical solution can be easily applied to the affected area, and when used, the chemical solution drippings, excessive excess chemical solution remains after use, the shaft gets dirty due to the chemical solution, manufacturing Occasionally a chemical solution adheres to the seal portion and does not disturb the sealing performance.

However, when the resin shaft part is fixed to the chemical solution application part made of cellulose sponge using an adhesive, the adhesive breakage occurs. On the other hand, if the adhesive is not used, the amount of the chemical solution is reduced. A new issue has been identified.
In addition, a sponge that is compression-molded only in the thickness direction exhibits a restoring force if it is alone, and swells in the thickness direction and absorbs a sufficient amount of drug solution while absorbing the drug solution (that is, absorbs the drug solution). However, it has been newly found that when the resin shaft is fixed, the resin enters the sponge and the restoring force is reduced, so that the amount of the liquid solution is reduced.

  Therefore, the present invention can fix the shaft portion to the cellulose sponge without causing adhesive breakage and without reducing the amount of the chemical solution, and more preferably compression molding only in the thickness direction. A new chemical applicator that investigates the cause of the reduction of the restoring force of the sponge and can hold (ie, absorb and hold) a sufficient amount of the chemical and efficiently release the chemical Is intended to provide.

  For this purpose, the present invention provides a chemical solution applicator provided with a chemical solution application portion made of cellulose sponge and a resin shaft portion fixed to the chemical solution application portion, wherein the resin constituting the shaft portion is made of Proposed is a chemical applicator having a structure in which a part of the chemical application part and the shaft part are fixed by partly entering and engaging with the internal gap of the sponge constituting the chemical application part.

  By melting the resin that constitutes the shaft part, etc., by allowing a part of the resin that constitutes the shaft part to enter the internal gap of the sponge, that is, the gap hole of the sponge, and solidify by cooling and physically engaging The chemical solution application portion and the shaft portion can be fixed without causing adhesive breakage or the like.

  Further, as a result of investigating the cause of the reduction of the restoring force of the sponge compression-molded only in the thickness direction, it was found that the restoring force is lowered when the sponge is fixed to the entire upper surface of the chemical solution application portion. Therefore, in the case of forming a chemical solution applicator from a cellulose sponge compression-molded only in the thickness direction, the base end portion of the shaft portion is fixed to an area portion of 2 to 90% of the upper surface of the chemical solution application portion. The shaft part can be firmly fixed to the chemical solution application part while maintaining the liquid holding power of the chemical solution application part.

The present invention also includes the above-described chemical solution applicator,
A container containing a chemical liquid application part accommodating recess for accommodating the chemical liquid application part, and a shaft part accommodating concave part communicating with the chemical liquid application part accommodating concave part for accommodating a shaft part;
A chemical liquid application kit comprising: a sheet lid that can cover the chemical liquid application portion accommodating recess and the shaft portion accommodating recess;
In the chemical liquid application part housing recess, together with the chemical liquid application part, 15 to 95% by mass of the liquid storable amount of the chemical liquid application part is accommodated, the shaft part is accommodated in the shaft part accommodating recess, and the chemical liquid application part A chemical solution coating kit having a configuration in which a housing recess and a shaft housing recess are sealed with a sheet lid is proposed.

  Thus, even if the amount of the chemical solution to be absorbed and held in the chemical solution application part is 15 to 95% by mass of the solvable amount, not only can a sufficient amount of the chemical solution be applied to the affected part, Since it does not exist in the recess where the drug solution is applied, the drug solution may drip when applied to the affected area, excessive drug solution may remain after use, the shaft may become dirty due to the solution, and the seal part may become dirty during manufacturing. The chemical solution does not adhere and does not hinder sealing.

It is the perspective view which showed an example of one Embodiment of the chemical | medical solution applicator of this invention, and its container. It is the perspective view which showed an example of the use condition of the chemical | medical solution applicator of this invention. It is the top view which showed the axial part of the chemical | medical solution applicator used by the adhesion test. It is the top view which showed the axial part and chemical | medical solution application part of the chemical | medical solution applicator used by the adhesion test.

  Hereinafter, preferred embodiments of the present invention will be described. However, the present invention is not limited to the embodiments described below.

  A chemical solution application kit according to an embodiment of the present invention (hereinafter referred to as a “main drug solution application kit”) includes a chemical solution application part 2 made of a sponge and a shaft part 3 as shown in FIGS. An applicator 1, a container 4 having a chemical liquid application part accommodating recess 5 for accommodating the chemical liquid application part 2, a shaft part accommodating recess 4 a for accommodating the shaft part 3, and a chemical liquid accommodated in the chemical liquid application part accommodating recess 5 And a sheet lid (not shown) capable of covering the chemical solution application portion receiving recess 5 and the shaft portion receiving recess 4a.

(Chemical solution application part 2)
The shape of the chemical solution application unit 2 is arbitrary, but is preferably a flat plate from the viewpoint of simplifying the manufacturing process and easy application of the chemical solution. The shape when viewed from above is arbitrary, such as a circle, an ellipse, a square, or a polygon.

The chemical solution application part 2 is preferably formed from a sponge mainly composed of cellulose having an OH group.
If the chemical solution application part 2 is formed from a sponge mainly composed of cellulose having an OH group that is a hydrophilic group, the chemical solution, in particular, a chemical solution consisting of an aqueous solution (for example, povidone iodine solution) is easily compatible with and can absorb and retain the chemical solution, That is, it is possible to increase the amount of liquid that can be held. Moreover, when the wet state containing the chemical solution is reached, the surface becomes soft and can be applied with a soft feel.

At this time, the sponge may contain reinforcing fibers in cellulose, which is a base material fiber, for example, in order to increase strength. As the reinforcing fiber, cotton (cotton), flax, ramie, pulp and the like can be used alone or in combination.
For example, those containing 20 to 50 parts by weight of reinforcing fibers, such as cotton fibers, with respect to 100 parts by weight of cellulose are preferred, and those containing 20 to 40 parts by weight are particularly preferred. By containing 20 to 50 parts by weight of the reinforcing fiber, the tensile strength and shape retention can be increased, the shape of the sponge can be maintained even if a lot of chemicals are contained, and the chemical solution can be easily applied to the affected part. .

The porosity of the sponge of the chemical solution application part 2 is preferably 95 to 99%. If the porosity of the sponge is 95 to 99%, it is possible to increase the amount of liquid that is absorbed and retained, that is, the amount of liquid that can be held, and the liquid that has been absorbed and retained is easily released. can do.
The porosity is a value calculated by the following formula (1).
(1) Void ratio = (true density−apparent density) × 100 / true density Note that the apparent density is the ratio of the weight to the apparent volume (including voids) of the sponge. It is the ratio of the weight to the real volume of the sponge constituent material obtained by subtracting the void volume from the apparent volume of the sponge.

  The gap of the sponge of the chemical solution application part 2 is preferably a gap communicating with the outside. As will be described later, when the void is formed by the method of eluting the added mirabilite crystal, the void is a void communicating with the outside.

The average diameter of the gap in the sponge of the chemical solution application part 2 is preferably 0.1 mm to 3.3 mm, particularly preferably 0.5 mm to 2.0 mm, and particularly preferably 0.7 mm to 0.9 mm.
If the average diameter of the porosity of the sponge is 3.3 mm or less, particularly 2.0 mm or less, it is possible to increase the amount that absorbs and retains the chemical solution, that is, the amount that can be held.
The average diameter of the voids can be obtained by observing with an electron microscope. However, in the production method for forming voids by eluting the added mirabilite crystals, as described later, the particle size and voids of the mirabilite crystals are used. Since the average diameters of these are substantially the same, it can be read as the average diameter of the mirabilite crystals.

It is preferable that the amount of the liquid (for example, 10 w / v% povidone iodine liquid (specific gravity about 1.03)) that can be hydrated in the sponge constituting the chemical liquid application unit 2 is the same as the volume of the sponge. . Specifically, it is preferably 0.95 to 1.10 g / cm ³ , particularly preferably 0.98 to 1.10 g / cm ³ .
If the amount of lysable per unit volume is 0.95 to 1.10 g / cm ³ , a sufficient amount of drug solution to be applied to the affected area can be absorbed and held by a relatively small volume of sponge. 2 and the chemical solution application part accommodating recess 5 can be made small, and the need to store extra chemical in the chemical solution application part accommodating recess 5 can be eliminated.

The possible amount of liquid hydrate per unit volume is a value calculated by equation (2).
(2) ··· Amount of liquid held per unit volume = unit volume weight at the time of liquid absorption-unit volume weight at the time of drying At this time, the unit volume weight at the time of liquid absorption is 10 w / w for the entire specimen (a sponge cuboid) It is a unit volume weight measured after soaking in a v% povidone iodine solution and soaking for 5 minutes and then placing on a metal mesh to remove droplets from the specimen.
In addition, the liquid holding means that the sponge absorbs and holds the liquid.

It is preferable to use a sponge having a liquid absorption rate of 0.03 to 0.5 s / g, particularly 0.04 to 0.5 s / g for the chemical solution, particularly 10 w / v% povidone iodine solution.
If the sponge has a liquid absorption speed of 0.03 to 0.5 s / g, the chemical liquid applicator 1 is inserted into the container 4 and then the chemical liquid is supplied to the chemical liquid application section 2 in the chemical liquid application section receiving recess 5. In this case, since the chemical solution application unit 2 absorbs the chemical solution within an extremely short time, the steps from supplying the chemical solution to the chemical solution application unit 2 to sealing the sheet lid are performed on a series of production lines. The medicinal solution application kit can be manufactured online. Moreover, since it can absorb instantly when a chemical | medical solution is poured into the chemical | medical solution application part 2, a chemical | medical solution does not jump to a seal | sticker part, but can ensure sealing performance more reliably.

The liquid absorption speed of the chemical solution is as follows: 10% w / v povidone iodine solution is poured into a stainless steel pad, then the specimen (sponge cuboid) is placed in the stainless steel pad and the lower part is immersed in the povidone iodine liquid, and the specimen (sponge) is made of stainless steel. It can be calculated from the following equation (4) by measuring the time from when it is placed in the pad until the top surface of the specimen is sucked.
(4) .. Liquid absorption speed = measured value (sec) / weight of sample before liquid absorption (g)

The chemical solution application part 2 is a sponge that is compression-molded only in the thickness direction so that the thickness is ¼ to 1/10 of that before compression, in other words, the thickness corresponding to the compressed amount when absorbing the chemical solution. A sponge that expands and restores in the direction is preferred.
By using a sponge that is compression-molded only in the thickness direction so that the thickness is 1/4 or less compared to before compression, the form is stable, so it is easy to insert the sponge into the mold during insert molding. The liquid absorption speed can be increased as described above, and when the chemical liquid is absorbed, it is restored and expanded in the thickness direction, and the shape after absorption is stabilized. What is necessary is just to form a little large along the planar view shape of the chemical | medical solution application part 2, and also the chemical | medical solution application part 2 can be accommodated in the stable state. In addition, it is difficult in the present molding technique to compress only in the thickness direction so that the thickness is less than 1/10 compared to before compression.
From this point of view, the chemical solution application part 2 is a sponge that is compression-molded only in the thickness direction so that the thickness is 1/4 to 1/10, especially 1/5 to 1/10, compared to before compression. Is even more preferable.

(Sponge production method)
The method for producing the sponge as described above is not particularly limited. As a preferred example, chips from wood or the like are dissolved to form fiber, which is treated with an alkali such as sodium hydroxide, and then carbon disulfide or the like is added to make viscose. This viscose is mixed with fine sodium sulfate crystal made of sodium sulfate (sodium salt), molded into a sheet or block, boiled and acid coagulated to elute the fine salt crystal, make it porous, washed with water, dried, Can be obtained by pressing in the thickness direction and compressing.

As a more specific example, wood pulp is immersed in a sodium hydroxide solution, pulverized after pressing into alkali cellulose (crumb), then aged at 17 ° C. for 10 hours, and then carbon disulfide is added to obtain cellulose xanthate. The cellulose xanthate is dissolved by adding unaged crumb having a fiber length of 0.1 to 5 mm, sodium hydroxide, and water to obtain viscose.
The obtained viscose and fine sodium silicate crystals having an average particle size of 0.1 mm to 3.3 mm are mixed while being kept at 16 to 20 ° C. in a mixer. This mixture is pressurized and filled into a mold through an extruder. At that time, the temperature around the extruder is adjusted to 16 to 20 ° C. The mold filled with the mixture is boiled for about 8 hours in a mirabilite bath at about 90 ° C., solidified to elute the fine mirabilite crystals, and the resulting compact is washed with water, dried, Furthermore, it can be obtained by pressurizing and compressing in the thickness direction.
However, in this method, each temperature, time, etc. can be adjusted.

  As a method of compression-molding the sponge only in the thickness direction, for example, when the sponge is insert-molded and the shaft portion is fixed, the sponge can be compressed and molded when inserted.

  At this time, the size of the voids in the sponge can be adjusted by changing the average particle size of the mirabilite crystal, and the voids in the sponge can be reduced by using the mirabilite crystal having a small average particle size. . Therefore, the average particle size of the mirabilite crystal is particularly preferably 0.5 mm to 2.0 mm, and more preferably 0.7 mm to 0.9 mm.

  Sponges produced by compression molding in the thickness direction not only have a large amount of liquid that can hold medicinal solution (capable of lysing), but also have a high liquid absorption rate and a predetermined thickness (for example, around 90%) when the medicinal solution is absorbed. Therefore, the size of the chemical solution application portion receiving recess 5 can be accurately designed according to the supply amount of the chemical solution and the volume of the sponge.

  Although the shape of the chemical solution application part 2 is not particularly limited, it is preferably a flat plate-like body as shown in FIG. 1 so that a small amount of chemical solution can be efficiently and widely applied.

(Shaft 3)
The material of the shaft portion 3 of the chemical solution applicator 1 is not particularly limited as long as it is made of resin, but polypropylene, polyethylene, polystyrene, and the like are preferable in consideration of moldability and price.

The axial part 3 should just be equipped with the thin-plate-like adhering piece part 3b in the base end part of the rod-shaped grip part 3a.
The shape of the fixed piece 3b is not particularly limited, but is preferably circular, semicircular, or elliptic when viewed in plan. Among these, a semicircular shape is preferable.

The size of the fixing piece portion 3b, that is, the area when viewed from above, in other words, the fixing area when the base end portion of the shaft portion 3 is fixed to the upper surface of the chemical solution application portion 2, is the upper surface of the chemical solution application portion 2, that is, the sponge. It is preferable to design so as to occupy 2 to 90% of the area of the upper surface.
If it is fixed to the entire upper surface of the chemical solution application part 2, the melted resin enters the internal space of the sponge and reduces the amount of liquid that can be held. On the other hand, even when the fixing area is small, the shaft portion 3 can be fixed to the chemical solution application part 2, but when the sponge is impregnated with the chemical solution, it cannot withstand its own weight and the sponge hangs down.
From this point of view, the area where the shaft portion 3 is fixed to the upper surface of the chemical solution application part 2 is preferably 2 to 90% of the area of the upper surface of the chemical solution application part 2, particularly 30 to 85%, and particularly preferably 60 to 60%. It is preferably 75%.

The means for fixing the shaft portion 3 to the chemical solution application portion 2 is not fixed by an adhesive, but melts the resin constituting the shaft portion, so that a part of the resin constituting the shaft portion is made into an internal space of the sponge. That is, it is important to fix by making it penetrate into the pores of the sponge, solidify by cooling and physically engage.
Specifically, for example, it is preferably fixed like insert molding (including outsert molding) or heat fusion.
When the shaft part 3 is fixed to the chemical solution application part 2 with an adhesive, the adhesive may dissolve in the chemical solution and become contaminated during long-term storage. There is a risk of peeling off. On the other hand, in the case of insert molding (including outsert molding) or thermal fusion, the resin forming the shaft portion 3 penetrates into the pores of the sponge of the chemical solution application portion 2 and is physically engaged. Therefore, there is no adhesion failure, the fixing force does not decrease with time, and there is no fear of contaminating the chemical solution.
More specifically, the chemical liquid application part 2 as an insert product is loaded and fixed in a mold, and the molten resin forming the shaft part 3 is injected onto the upper surface of the chemical liquid application part 2 so as to be injected. And is fixed to the chemical solution application unit 2.
In the case of insert molding, the outer peripheral edge portion of the fixing piece portion 3 b is disposed inside the outer peripheral edge portion of the upper surface of the chemical solution application portion 2. In other words, it is preferable to dispose a distance between the outer peripheral edge of the fixing piece 3b and the outer peripheral edge of the upper surface of the chemical solution application section 2. In the case of insert molding, if the outer peripheral edge portion of the fixed piece 3b and the outer peripheral edge portion of the upper surface of the chemical solution application portion 2 are arranged to be flush with each other, the resin constituting the shaft portion 3 wraps around the side surface of the chemical solution application portion 2. It has been found.

(Container 4)
The storage container 4 includes, for example, a chemical solution application portion storage recess 5 that stores the chemical solution application portion 2 and a shaft portion storage recess 4a that stores the shaft portion 3. It can form in the structure provided with the seal collar part 4e so that it may surround.

  The material of the container 4 is not particularly limited, but is preferably formed from a sheet or film made of a resin having shape retention, chemical resistance, barrier properties for suppressing chemical penetration and volatilization, and the like. . For example, polystyrene, polyethylene, polypropylene, polyethylene terephthalate and the like can be preferably used.

It is preferable that the chemical liquid application part accommodating recess 5 is formed to have a larger size in plan view along the planar view shape of the chemical liquid application part 2 so that the chemical liquid application part 2 can be completely accommodated without gaps. . In the example of FIG. 1, a shallow concave portion is formed along the flat plate-shaped chemical solution application portion 2.
At this time, “larger” means that when the chemical solution application part 2 absorbs the chemical solution, it slightly expands in the lateral direction, that is, about 15 to 25% of the whole in the lateral direction. In addition to 15 to 25%, a slight margin (0.5 mm to 5 mm) is preferably added to form a large planar view width.
On the other hand, the depth of the concave portion 5 containing the chemical solution application portion is a length obtained by adding a slight margin (0.5 mm to 5 mm) to the thickness when the chemical solution application portion 2 absorbs the chemical solution and expands and restores in the thickness direction. Preferably, it is formed to a depth of.

  The shaft housing recess 4a may be formed so as to communicate with the chemical solution coating housing housing recess 5 and to completely store the shaft 3. For example, it may be formed in an elongated groove-like planar view shape along the planar view shape of the shaft portion 3, and a wide portion is provided at a portion on the opposite side to the chemical solution application portion receiving recessed portion 5, and the shaft portion You may make it easy to grasp 3 with a finger.

  The seal collar 4e is a portion for sealing the sheet lid body in an overlapping manner, and is preferably formed with an appropriate width.

(Medical solution)
The type of chemical solution to be stored is not particularly limited. For example, povidone iodine solution, antiseptic chemicals such as alcohol and hydrogen peroxide, cosmetics such as lotion and baby oil, other liquid chemicals, and distilled water can be used. Among these, a chemical solution (for example, povidone iodine solution) composed of an aqueous solution is particularly preferable from the viewpoint of easy compatibility with a sponge mainly composed of cellulose having an OH group.

The chemical solution is to be accommodated in the chemical solution application part accommodating recess 5 together with the chemical solution application part 2, but in the present invention, the amount to be accommodated in the chemical solution application part accommodating recess 5 is important. That is, in the chemical solution application part receiving recess 5, the amount of the liquid solution that can be held in the chemical solution application unit 2 together with the chemical solution application unit 2, that is, in a specific numerical value, 15 to 95% by mass of the liquid solution possible amount. It is important to accommodate.
By storing the same amount of the lysable amount of the medicinal solution application part 2, that is, 15 to 95% by mass of the lysable amount, it is possible to apply a necessary and sufficient amount of medicinal solution to the affected part, Since there is no excess chemical in the recess where the chemical solution is applied, the chemical may drip, excessive excess chemical may remain after use, or the chemical may adhere to the seal part during manufacturing and prevent sealing. It can be lost.
From this point of view, the amount of the chemical liquid stored in the chemical liquid application part receiving recess 5 is preferably 15 to 95% by mass, particularly 20 to 90% by mass, especially 50 to 50% by mass of the liquid application part 2 capable of lysing. More preferably, the amount is 70% by mass.

  The amount of the chemical solution stored in the chemical solution application portion receiving recess 5 is preferably changed as appropriate depending on the type and size of the affected part, the size of the drug solution application portion storage recess 5, and the like. It is preferable to adjust the size and the amount of the chemical solution to be contained.

(Seat lid)
The material of the seat lid is not particularly limited, but it needs to be waterproof and chemical resistant. For example, a composite sheet formed by laminating a metal thin film layer on the sheet surface of a resin base sheet can be cited as a preferred example. Specifically, a resin base sheet such as polyethylene, polypropylene, polyethylene terephthalate, aluminum, etc. A composite sheet obtained by depositing or laminating a metal and laminating a metal thin film layer can be preferably used.

(Production method)
The method for producing the drug solution coating kit is not particularly limited. For example, after inserting the chemical solution application part 2 into the chemical solution application part accommodating recess 5 and inserting the chemical solution applicator 1 into the receiving container 4 so as to insert the shaft part 3 into the shaft part accommodating recess 4a, Is preferably poured into the chemical solution application section 2 and then the chemical solution application kit is manufactured by covering and sealing the sheet lid so as to cover the chemical solution application section receiving recess 5 and the shaft portion receiving recess 4a.

Since the chemical solution applicator 1 is accommodated in the container 4 prior to the chemical solution, and then the chemical solution is supplied to the chemical solution application unit 2 in the chemical solution application unit receiving recess 5, the chemical solution application unit 2 absorbs the chemical solution. The chemical can be supplied without spilling.
At this time, with respect to the chemical solution application unit 2, the same amount of the chemical solution as the lysable amount of the chemical solution application unit 2, that is, 15 to 95% by mass of the lysable amount is stored in the chemical solution application unit housing recess 5. By supplying to the chemical solution application part 2, it is possible to prevent the chemical liquid from splashing on the seal collar 4 e and the like, and the sheet lid can be covered and sealed in a sealed state.

In such a manufacturing method, as described above, a sponge that is compression-molded only in the thickness direction so as to have a thickness of ¼ to 1/10 of that before compression, in other words, compressed when absorbing a chemical solution. It is preferable to form the chemical solution application part 2 from a sponge that expands and restores in the thickness direction.
By using a sponge that is compression-molded only in the thickness direction so that the thickness is 1/4 to 1/10 compared to before compression, the liquid absorption speed can be increased and the chemical liquid is absorbed. Therefore, the shape in plan view of the chemical solution application portion receiving recess 5 may be slightly larger along the shape in plan view of the chemical solution application portion 2. And the chemical | medical solution application part 2 can be accommodated in the stable state.
From this point of view, the chemical solution application part 2 is a sponge that is compression-molded only in the thickness direction so that the thickness is 1/4 to 1/10, particularly 1/5 to 1/10, compared to before compression. Even more preferably.

Similarly, as described above, the chemical solution application part comprising a sponge having a liquid absorption rate of 0.03 to 0.5 s / g, particularly 0.04 to 0.5 s / g, of the chemical solution, particularly 10 w / v% povidone iodine solution. 2 is preferably used.
If the sponge has a liquid absorption speed of 0.03 to 0.5 s / g, when the chemical solution is poured into the chemical solution application portion 2 in the chemical solution application portion receiving recess 5, the chemical solution application portion 2 is instantly wetted. In order to absorb the chemical solution, when the chemical solution is poured into the chemical application unit 2, the chemical solution does not scatter, and the time from the supply of the chemical solution to the sealing of the seat lid can be shortened. It can be carried out in one production line, and the production of the drug solution application kit can be performed online.

(how to use)
In this chemical solution application kit, after the sheet lid is peeled off from the storage container 4, as shown in FIG. 2, the chemical solution application tool 1 is taken out from the storage container 4, and the chemical solution application part 2 of the chemical solution application tool 1 is applied to the affected part. The chemical solution impregnated in the chemical solution application part 2 can be applied to the affected part, and the excessive chemical solution is not accommodated in the chemical solution application part accommodating recess 5, so that the chemical solution may drip or become extra after use. Therefore, there is no excess chemical solution remaining, and the hand is not soiled by shaft contamination by the chemical solution.
At that time, the chemical solution application part 2 made of a sponge as described above is flexible in a state of being impregnated with the chemical solution, so that the chemical solution can be applied to the affected area with a soft coating comfort. Furthermore, since the chemical liquid oozes out without being pressed by simply placing the cellulose sponge 2 on the affected area, the chemical liquid can be uniformly and sufficiently applied to the affected area.

(Other embodiments)
In addition to the medical solution application portion receiving recess 5 and the shaft portion receiving recess 4a for storing the shaft portion 3, a partition is provided, and a medical device receiving recess for receiving medical devices such as tweezers, gauze, bandages, hemostatic tape is provided. A medical instrument can be accommodated in the instrument accommodating recess to form a medical kit.

(Explanation of terms)
In the present invention, “cellulose sponge” means a sponge mainly composed of cellulose.
In the present invention, the “main component” includes the meaning of allowing other components to be contained within a range that does not interfere with the function of the main component, unless otherwise specified. At this time, the content ratio of the main component is not specified, but the main component (when two or more components are main components, the total amount thereof) is 50% by mass or more, particularly 70% by mass in the composition. %, More preferably 90% by mass or more (including 100%).

In the present specification, when expressed as “X to Y” (X and Y are arbitrary numbers), unless otherwise stated, “preferably greater than X” and “preferably greater than or equal to X” "Less than Y" is included.
In addition, when expressed as “X or more” (X is an arbitrary number) or “Y or less” (Y is an arbitrary number), it is “preferably greater than X” or “preferably less than Y”. Includes intentions.

  Hereinafter, although this invention is demonstrated based on various tests and an Example, this invention is not limited to the following Example.

<Material selection test for chemical application part>
In order to select the material for the chemical solution application part, the following test was performed on the following specimens made of different materials, the physical properties of each specimen were compared, and the material for the chemical solution application part was examined.
It was.

(Sample)
Specimen A: Compressed sponge containing cellulose having OH group as a main component and 30 parts by weight of cotton fibers as reinforcing fibers with respect to 100 parts by weight of cellulose (compression rate 1/5, porosity 98%, average diameter of voids) 0.8mm, length 50.1mm x width 50.6mm x height 0.8mm, volume 2,114mm ³ )
Specimen B: Commercially available cotton ball (No. 20, vertical 24.0 mm × width 21.7 mm × height 19.7 mm)
Specimen C: Commercially available cotton swab (5 inch cotton swab small)

  Sponge A is obtained by immersing wood pulp in a sodium hydroxide solution and crushing it to obtain alkali cellulose (crumb), then aging at 17 ° C. for 10 hours, and then adding carbon disulfide to obtain cellulose xanthate. Add undissolved crumb with 0.1-5 mm fiber length, sodium hydroxide and water to the tate to obtain viscose, and mix the resulting viscose with mirabilite crystals with an average particle size of 0.8 mm The mixture was kept while maintaining the temperature at 16 to 20 ° C., and water was added to adjust the mixture. This mixture was press-filled into a mold through an extruder. At that time, the temperature around the extruder was adjusted to 16 to 20 ° C. The mold filled with the mixture is boiled for about 8 hours in an about 90 ° C. mirabilite bath and solidified, and the resulting molded body is washed with water, dried, and the thickness becomes 1/5 in the thickness direction. A compression sponge obtained by pressurizing and compression-molding was cut into a predetermined size.

(Measurement of possible amount of liquid)
Pour 10w / v% povidone iodine solution in an amount sufficient to immerse the entire specimen in a stainless steel pad, immerse the entire specimen in povidone iodine solution and immerse for 5 minutes, then place it on a metal mesh to remove the droplets from the specimen. In addition, the unit volume weight at the time of liquid absorption was measured.
The weight of the sample in a dry state was measured in advance, and the amount of liquid that could be held per unit volume was calculated from the following formula (2).
(2) ··· Amount of liquid held per unit volume = Unit volume weight at the time of liquid absorption-Unit volume weight at the time of drying

(Measurement of liquid discharge rate)
As described above, after measuring the unit volume weight at the time of liquid absorption, a weight of 200 g is applied to the sample and left for 30 seconds, and then the weight of the sample (: unit volume weight after liquid discharge) is measured, and the formula (3) The liquid release rate was calculated.
(3) .. Release rate = (unit volume weight upon liquid absorption−unit volume weight after liquid discharge) × 100 / (unit volume weight upon liquid absorption−unit volume weight upon drying)
In addition, when performing disinfection work, since it is thought that the chemical | medical solution application tool was pressed against the disinfection location with the load of 200 g or less, the liquid discharge rate was measured with the load of 200 g.

(Liquid absorption speed)
Pour 10 w / v% povidone iodine solution into a stainless steel pad, then place the specimen (sponge rectangular parallelepiped) in the stainless steel pad, immerse the lower part in the povidone iodine liquid, place the specimen (sponge) in the stainless steel pad, and then the specimen. The time until the liquid was absorbed up to the upper surface was measured and calculated from the following equation (4).
(4) .. Liquid absorption speed = measured value (sec) / weight of sample before liquid absorption (g)

(Compression rate)
After the specimen was hydrated, the compressibility was measured in a state where water was squeezed lightly enough to prevent dripping.
The compression rate was measured by measuring the thickness (T0: initial load thickness, mm) when a load of 50 g / cm ² was applied to the measurement sample using a compression elasticity tester, and then applying a load of 200 g / cm ^2. The thickness (T1: initial load thickness, mm) was measured, and the compression rate (%) was calculated from the following equation (5).
(5) .. Compression rate = (T0−T1) × 100 / T0
Table 1 shows the average value of n = 3.

The amount of the sample A that can be hydrated and the liquid absorption speed were extremely large compared to the sample B, and it was found that the sample A can absorb and retain a large amount of the drug solution.
In addition, the liquid discharge rate and the compression rate of the sample A are extremely larger than those of the sample C, and the sample A can release most of the absorbed and retained chemical solution, and the compression rate is higher than that of the sample C (cotton swab). I found that it was soft and gentle to the skin.

(Chemical solution application test)
Each specimen was placed in a stainless steel pad, and 2000 mL of 10 w / v% povidone iodine solution was poured into it to absorb the drug solution, and then immediately placed on the skin and moved to compare the application state. As a result, Sample A absorbed the chemical solution instantaneously and absorbed all the poured chemical solution, but Sample B could not absorb all the chemical solution.
In addition, the sample A can be applied evenly by simply moving it on the skin while absorbing the chemical solution, and the chemical solution did not sag. A large amount of the chemical solution oozes out and dripped down, and it was not possible to apply the solution evenly.

<Fixing test>
Various types of fixing means and fixing area of the shaft portion with respect to the chemical solution application portion were changed, and preferred fixing means were examined.

(Adhesion with various adhesives)
Using the sponge of specimen A, two sponges having a thickness of 5 mm and a radius of 30 mm were bonded together to form a flat disc-shaped (upper surface area 706.5 mm ² ) chemical solution application part 2.
On the other hand, as shown in FIG. 3, the shaft portion 3 was formed by forming a fixed piece portion 3 b made of polypropylene and having an elliptical thin plate shape (area: 100.48 mm ² ) at the shaft end portion.
Then, on the back surface of the fixed piece 3b of the shaft 3, any one of a polyvinyl alcohol adhesive, an ethylene vinyl alcohol adhesive, an acrylic adhesive, an olefin hot melt adhesive, and a synthetic rubber hot melt adhesive is applied. As shown in FIG. 4, the fixed piece 3 b of the shaft portion 3 was fixed to the upper surface of the chemical solution applying portion 2.
After that, impregnated with 10 w / v% povidone iodine solution, sealed with a multilayer film containing aluminum, stored for 2 weeks and 1 month in an environment of 40 ° C. and humidity 75%, and then tensile strength was measured by a Shimadzu tensile tester. It was measured.

Polyvinyl alcohol adhesives and acrylic adhesives obtained extremely low tensile strength after 2 weeks.
The ethylene vinyl alcohol adhesive had good tensile strength after 2 weeks, but because it was liquid, it penetrated into the sponge of the chemical application part 2 and absorbed the chemical while restoring in the thickness direction. It has been found that there is a problem in that the ability (restoring power) is reduced and the amount of liquid held in the chemical solution is reduced.
It has been found that when the olefin-based hot melt adhesive and the synthetic rubber-based hot melt adhesive are stored for one month, the adhesive strength decreases and the tensile strength decreases.
However, in all the adhesives, when the shaft portion and the sponge of the specimen A were directly bonded, cohesive failure or adhesive failure occurred, and it was considered that there was a problem in bonding with the adhesive.

(Fixed by insert molding)
Sample A sponge, that is, cellulose sponge, is a flat disk-shaped (upper surface area 314 mm ² ) with a thickness of 1 mm after compression (thickness 5, 7, 10 mm before compression) and a radius of 20 mm. 2 was formed.
The chemical solution application part 2 was set in a mold, and a shaft portion 3 was formed so as to inject a molten polypropylene resin onto the upper surface of the chemical solution application part 2 and fixed to the upper surface of the chemical solution application part 2. At this time, as shown in FIG. 4, the shaft portion 3 is formed with an elliptical thin plate-like fixing piece portion 3b at the end portion of the shaft. The area of the fixing piece portion 3b is in the range of 0 to 100%. Changed in.
Similar to the above test, impregnated with 10 w / v% povidone iodine solution, sealed with a multilayer film containing aluminum, stored for 2 weeks and 1 month in an environment of 40 ° C. and 75% humidity, and then using a Shimadzu tensile tester. Tensile strength was measured. In addition, the amount of liquid that could be hydrated was measured in the same manner as described above, and the appearance of the sponge was observed.

The state of the sponge hanging was evaluated according to the following criteria and shown in Table 2.
○: No problem.
Δ: Slightly drooping.
×: Dripping vigorously −: Not adhered.

It has been found that when the insert molding is performed in this manner, the fixing force does not decrease with time unlike an adhesive, and the shaft portion 3 can be firmly fixed to the chemical solution application portion 2 even if stored for a long time. In this case, it was considered that the base material destruction in which the sponge of the specimen A was broken occurred and the adhesive force was sufficient.
Moreover, when the chemical | medical solution application part 2 was peeled and the adhesion surface surface of the axial part 3 was observed, it was confirmed that the unevenness | corrugation was made. This unevenness can be considered that the molten resin enters the void (hole) in the sponge and is physically engaged and fixed.

This has solved the problem of the sticking force, but it has been found that the restoring force (in other words, the liquid holding force) when the chemical solution application unit 2 absorbs the chemical solution and restores it in the thickness direction may decrease.
It has been found that this can be solved by reducing the size of the piece 3b, that is, the fixing area. Therefore, in order to maintain the liquid holding power, it was found that the fixing area of the upper surface of the chemical solution application part 2 is preferably 90% or less, particularly 85% or less, and particularly preferably 75% or less. .
On the other hand, when the fixing area of the upper surface of the chemical solution application part 2 is 2% or more (width 1 mm or more), the fixing force can be maintained, and when it is 30% or more (width 4 mm or more), the chemical solution application part 2 removes the chemical solution. It has also been found that the chemical application part 2 can be prevented from dripping drastically due to its own weight when absorbed, and it can be prevented from dripping at all when it is 60% or less (width 12 mm or less).
Therefore, the size of the fixed piece 3b, that is, the fixed area of the shaft portion 3 with respect to the chemical solution application part 2 is preferably 2 to 90% of the upper surface of the chemical solution application part 2, particularly 30 to 85%, especially 60. It has been found that it is preferably ˜75%.

(Example)
As described above, the shaft part 3 is formed by insert molding, the area of the fixed piece part 3b is 50%, and the chemical solution application part 2 made of the sponge of the specimen A and the shaft part 3 are integrated to form the chemical solution applicator 1. Formed. At this time, the amount capable of immersing is about 1.8 g (maximum about 2.1 g to minimum about 1.6 g), and the recoverable amount is about 80%.
Then, after the chemical solution application part 2 is inserted into the chemical solution application part receiving recess 5 and the shaft part 3 is inserted into the shaft part storage recess 4a, the chemical solution applicator 1 is stored in the storage container 4, and then the chemical solution application part 2 to 0.13 to 2.06 (0.103, 0.206, 0.309, 0.412, 0.515, 1.03, from above to the chemical solution application unit 2 in 1.133, 1.236, 1.339, 1.442, 1.545, 1.648, 1.751, 1.854, 1.957, 2.06) g of chemical liquid is poured, and then the chemical liquid application section The sheet lid was covered and sealed so as to cover the housing recess 5 and the shaft housing recess 4a, to produce a chemical solution coating kit.

  As a result, the amount of the chemical liquid stored in the chemical liquid application part receiving recess 5, that is, the amount of the chemical liquid poured into the chemical liquid application part 2 can apply a necessary and sufficient amount of chemical liquid to the affected part, From the point that the chemical solution dripped when the chemical solution application unit 2 is taken out from 5, the extra chemical solution remaining after use, the point that the chemical solution adheres to the seal part at the time of manufacture, etc. It was found that the amount was preferably -95% by mass, particularly 20-90% by mass, and particularly preferably 50-70% by mass.

DESCRIPTION OF SYMBOLS 1 Chemical solution applicator 2 Chemical solution application part 3 Shaft part 3a Grasp part 3b Adhering piece part 4 Storage container 4a Shaft part accommodation recessed part 4e Seal collar part 5 Chemical solution application part accommodation recessed part

Claims (3)

A chemical solution applicator comprising a plate-shaped chemical solution application portion made of cellulose sponge, and a resin shaft portion having a fixing piece portion and a grip portion fixed to the upper surface of the chemical solution application portion,
In the manufacturing process of the chemical solution applicator, the upper surface of the chemical solution application portion is fixed by fixing means in which the resin constituting the shaft portion is melted and the molten resin enters and engages the gap in the sponge constituting the chemical solution application portion. And a chemical solution applicator having a configuration in which the lower surface portion of the fixing piece portion of the shaft portion is fixed.   The chemical solution applicator according to claim 1, wherein the fixing piece portion of the shaft portion covers 40 to 90% of the area of the upper surface of the chemical solution application portion. The chemical solution applicator according to claim 1 or 2 ,
A container containing a chemical liquid application part accommodating recess for accommodating the chemical liquid application part, and a shaft part accommodating concave part communicating with the chemical liquid application part accommodating concave part for accommodating a shaft part;
A chemical liquid application kit comprising: a sheet lid that can cover the chemical liquid application portion accommodating recess and the shaft portion accommodating recess;
In the chemical liquid application part housing recess, together with the chemical liquid application part, 15 to 95% by mass of the liquid storable amount of the chemical liquid application part is accommodated, the shaft part is accommodated in the shaft part accommodating recess, and the chemical liquid application part A chemical solution coating kit having a configuration in which a housing recess and a shaft housing recess are sealed with a sheet lid.

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