JP2007063723A - Stockings or cylindrical lower limb supporter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pair of stockings or a cylindrical lower limb supporter (stockings or the like) improved in comfortability during wearing and durability and capable of effectively performing even if wearing for a long time fatigue reduction, and prevention or treatment of disease through stably giving appropriate pressure to prescribed regions. <P>SOLUTION: The pair of stockings 1 is made of a cloth covering part or the whole of the foot, the ankle and the calf, and makes a prescribed pressure distribution for fatigue reduction, and prevention or treatment of disease act on the ankle 4 and/or the calf 5 when wearing. The thickness of threads of ≥50 wt.% of threads constituting the cloth covering the ankle 4 and/or the calf 5 is 212-700μm. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to a sock or cylindrical lower limb supporter, and in particular for sports and daily use, socks used to reduce fatigue on the body during sports, prevention and reduction of swelling of the lower limbs, etc. The present invention relates to a cylindrical lower limb supporter. In addition, the present invention can be used for medical purposes for the prevention or treatment of diseases such as venous return disorder of the lower limbs and lymphedema.
The form of the sock or cylindrical lower limb supporter that is the subject of the present invention is one that covers from the foot to the calf (so-called socks), one that covers from the foot to the knees (so-called high socks), and the foot to the thigh. And so on (so-called pantyhose) that covers from the foot to the waist (so-called pantyhose). In the above-described various forms, the buttocks, the toes, or the feet may not be partially covered.
“Socks or cylindrical lower limb supporters” may be hereinafter referred to as “socks”.

Conventionally, in the medical field, compression pressure gradually decreases from the ankle to the thigh for the prevention and treatment of venous return disorders such as varicose veins and venous thrombosis in the lower limbs and lymphedema. An elastic sock has been proposed (see, for example, Patent Document 1), and its effect is well known.
For sports and daily use, elastic socks or cylindrical lower limb supporters are used to prevent fatigue of the lower limbs or to prevent or treat injuries. And in order to heighten the prevention or treatment effect, what was designed so that a higher pressure (tightening force) is applied to a predetermined part than the other part at the time of wearing has been proposed (for example, Patent Documents 2 and 3). reference).

  By the way, as a cloth constituting socks or the like, a knitted fabric is generally used conventionally. This knitted fabric is composed of a nylon yarn constituting the stitch and a polyurethane elastic yarn covered with a nylon yarn inserted in the lateral direction of the stitch. However, these nylon yarns often use relatively thin yarns to enhance the aesthetic impression. Especially, they are used for a long time in situations involving a lot of contact with the outside, such as for sports and daily use. In the case of repeated washing and use, it was not sufficiently satisfactory in terms of comfort and durability at the time of wearing.

  In the case of socks using the above thread, the polyurethane elastic thread covered with the nylon thread due to friction or the like is exposed on the skin contact surface, or pilling (hairball) on the fabric surface with the cut nylon thread. ) Or the like, the sufficient function as a knitted fabric cannot be exhibited. That is, conventional socks have a problem that durability decreases with use. The same applies to the case where a woven fabric or a non-woven fabric is used as the fabric constituting the socks.

  Furthermore, with the exposure of the polyurethane elastic yarn as described above and the generation of pills, there arises a problem that the touch at the time of wearing deteriorates. In addition, when there is a decrease in comfort during wearing, the wearer may unintentionally shift or rub the socks, etc., and the socks may be rubbed or wrinkled. . Therefore, there is a problem that the pressure set on these socks is not exhibited at a desired position, and the prevention and treatment effects are not effectively exhibited. In particular, when such a twist or wrinkle occurs at a site that is set to apply a strong pressure, discomfort and skin irritation increase. Furthermore, the above-described decrease in durability may disrupt the balance of the fabric structure and hinder appropriate pressure exertion.

  Moreover, the stuffiness in the shoes due to sweating causes the growth of bacteria and the generation of bad odor, and has a great influence in terms of comfort during wearing. In order to suppress the growth of such bacteria, a stocking is known in which zeolitic solid particles are added to and mixed with nylon yarn, and metal ions are held in the zeolitic solid particles (see, for example, Patent Document 4). However, the addition of such solid particles may deteriorate the feel of the yarn and impair the comfort during wearing.

Japanese Utility Model Publication No. 3-85025 Japanese Patent Publication No. 6-51921 Japanese Patent No. 2914614 JP-A-4-126802

  The present invention has been made in view of the above problems, and an object of the present invention is to improve comfort and durability at the time of wearing, and is suitable for a predetermined part even if worn for a long time. An object of the present invention is to provide a sock or tubular lower limb supporter capable of effectively reducing fatigue, preventing or treating a disease, etc. by stably applying a compression pressure.

  In order to solve the above-mentioned problem, the present invention comprises at least a part of the foot part, the ankle part, and the calf part covering the cloth, and at the time of wearing, the ankle part and / or the calf part is reduced in fatigue. In a sock or tubular lower limb supporter in which a predetermined pressure distribution for prevention or treatment of a disease acts, 50% by weight or more of the yarn constituting the cloth covering the ankle part and / or calf part The thickness of the yarn is 212 to 700 μm (Claim 1).

  When the thickness of the yarn constituting 50% by weight or more of the yarn constituting the cloth covering the ankle portion and / or calf portion is less than 212 μm, as described above, the polyurethane elastic yarn is covered with the nylon yarn by friction or the like May be exposed to the skin contact surface, or pilling may occur on the surface of the fabric, which may deteriorate the feel when worn. However, if the thickness is 212 μm or more, the durability is Large and comfort is not compromised. In addition, when the thickness of 50% by weight or more of the yarn constituting the cloth covering the ankle part and / or calf part exceeds 700 μm, the fabric is stiff and the fabric structure is not stabilized and the crimping or distortion is not caused. This is not preferable because it gives a hard feeling to the whole. The yarn constituting the cloth covering the ankle portion and / or the calf portion needs to have a yarn of 50% by weight or more having a thickness of 212 to 700 μm, and preferably a yarn having a thickness in the range of 220 to 400 μm. In addition, the yarn constituting the cloth covering the ankle part and / or calf part is preferably 55% by weight or more, more preferably 60% by weight or more with a thickness of 212 to 700 μm. It may be 100% by weight. In particular, it is preferable to use the thread on both the ankle part and the cloth covering the calf part.

As an embodiment of the invention of claim 1, the inventions of claims 2 to 8 below are preferable. That is, in the sock or tubular lower limb supporter according to claim 1, the compression energy of the cloth covering the ankle part and / or the calf part is 0.35 to 3.5 gf · cm / cm ² (invoice) Item 2). The compression energy is related to the softness of the cloth and the buffering effect. According to the second aspect of the present invention, a soft skin contact surface can be formed, and a suitable buffering action can be exerted against contact from the outside, thereby improving comfort during wearing. When the compression energy is less than 0.35 gf · cm / cm ² , the fabric feels bad, and when it exceeds 3.5 gf · cm / cm ² , it may feel bulky and may cause discomfort when worn. .

  Further, in the sock or tubular lower limb supporter according to claim 1 or 2, the surface roughness of the cloth covering the ankle part and / or calf part is 25.0 or less (claim 3). If the surface roughness exceeds 25.0, the texture may be deteriorated during wearing.

  Moreover, as an embodiment when the cloth covering the ankle part and / or the calf part is specified as the knitted fabric, the invention of the following claim 4 is preferable. That is, in the sock or tubular lower limb supporter according to any one of claims 1 to 3, the cloth covering the ankle part and / or the calf part is constituted by a knitted fabric, and the yarn 50 constituting the knitted fabric is formed. The yarn of the weight% or more is a yarn constituting a stitch having a thickness of 212 to 700 μm. When a sock or the like is formed of a knitted fabric, it is preferably configured of a yarn that forms the stitch and an elastic yarn that is inserted in the lateral direction of the stitch. At this time, since the yarn constituting the stitch is arranged on the surface of the knitted fabric and directly contacts the skin, in the present invention, it is possible to distribute the yarn having a thickness of 212 to 700 μm to the yarn constituting the stitch. This is important from the viewpoint of improving durability and comfort.

  In the invention of claim 4, the cloth covering the ankle portion and / or the calf portion is preferably a knitted fabric comprising 18-60 rows of wales and 18-50 rows of course per 2.54 cm. This range is a suitable knitted structure balance for stably exerting a desired compression pressure.

  Moreover, the following aspect is preferable for the support for socks or a cylindrical leg of this invention. That is, 50% by weight or more of the yarn constituting the cloth covering the ankle portion and / or the calf portion is used as the spun yarn. Due to the short fibers constituting the spun yarn, moderate softness is imparted to the yarn, and fine irregularities are formed on the surface of the yarn, thereby improving the adhesion to the skin and making it difficult for deviation to occur.

  Furthermore, it is preferable that 50% by weight or more of the yarn constituting the cloth covering the ankle portion and / or the calf portion is a yarn made of cellulose fiber. As a result, the sock or the cylindrical supporter absorbs sweat well, it is hard to be stuffy even if it is used for a long time, the touch is good, and the wearing feeling is very good. Furthermore, in the aspect of claim 6, the cellulose fiber preferably comprises a carboxyalkylated cellulose fiber in which at least a part of the carboxyalkyl group is substituted with an antibacterial metal carboxyalkyl group (claim). 7).

  Moreover, the following aspect is preferable about the compression pressure distribution provided in the sock or cylindrical leg supporter of this invention. That is, it is assumed that a compression pressure distribution is provided in which the compression pressure gradually decreases from the ankle portion to the calf portion. In the invention of claim 8, the pressure of the ankle is preferably higher than the pressure of the calf, and is preferably in the range of 18 to 67 hPa and 9 to 54 hPa, respectively.

  According to the present invention, since the feeling of use at the time of wearing is good even after wearing for a long time, the wearer does not cause socks or wrinkles by shifting or rubbing socks or a cylindrical supporter. . As a result, even when using socks or supporters for the lower limbs for a long time, it becomes possible to stably apply an appropriate compression pressure to a predetermined position of the lower limbs, reducing wearer's fatigue, or swelling of the lower limbs. Can be effectively prevented or reduced.

  An embodiment of the present invention will be described based on FIG. 1 and FIG. FIG. 1 is a sock-type sock according to an example of an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a sock-type sock. In this embodiment, from the toe portion 2, the heel portion 3, the ankle portion 4, and the calf portion 5 to the foot mouth portion 7 slightly below the knee portion 6. Shows a type of sock.

As described above, the sock illustrated in FIG. 1 is formed of a cloth such as a knitted fabric, a woven fabric, or a non-woven fabric. The ratio of the yarn having a thickness in the range of 212 to 700 μm to the entire cloth covering the ankle part 4 and / or the calf part 5 is at least 50% by weight, preferably 55% by weight or more, more preferably 60% by weight or more. is there. It may be 100% by weight.
When the cloth covering the ankle part 4 and / or the calf part 5 is composed of a knitted fabric, the knitted fabric is preferably composed of yarns constituting the stitches and elastic yarns inserted in the lateral direction of the stitches. The yarn of 50% by weight or more of the yarn has a thickness of 212 to 700 μm. In particular, it is preferable that 50% by weight or more of the yarn constituting the knitted fabric is a yarn constituting a stitch having a thickness of 212 to 700 μm.
Further, when the fabric covering the ankle portion 4 and / or the calf portion 5 is formed of a woven fabric, the yarn of 50% by weight or more of both the warp and the weft of the woven fabric has a thickness of 212 to 700 μm. .
Furthermore, when the cloth covering the ankle part 4 and / or the calf part 5 is made of a nonwoven fabric, 50% by weight or more of threads (fibers) constituting the nonwoven fabric are made to have a thickness of 212 to 700 μm.

  The fabric in the sock or tubular lower limb supporter of the present invention can adopt the same knitting structure as conventional ones, for example, elastic yarn or the like from the lateral direction on a knitted structure formed by flat knitting, rubber knitting, pearl knitting, etc. A mode of insertion can be used.

  In particular, it is preferable to form the ankle part and / or calf part with a knitted structure consisting of 18 to 60 rows of wales and a course of 18 to 50 rows per 2.54 cm. Can be made stable. More preferably, the ankle portion and / or the calf portion are formed by a knitted structure comprising 18-45 rows of wales per 2.54 cm and 18-30 rows of courses.

  Moreover, it is preferable to form an ankle part and / or a calf part with the knitting structure which consists of the stitch | gear comprised from an elastic yarn, and the elastic yarn inserted in the horizontal direction of a stitch | yarn. By doing so, the longitudinal and lateral elongation of the sock or cylindrical lower limb supporter becomes good, and it becomes easy to fit the extension of the skin and the movement of the body, and the shift is suppressed. The elastic yarn is preferably a so-called covered yarn, an elastic yarn in which polyurethane or natural rubber elastic yarn is used as a core yarn, and other yarns are wound around in a coil shape.

  In addition, the longitudinal direction as used in the field of this invention means the direction parallel to the manufacturing direction of a knitted fabric, and the waling direction of a knitted fabric corresponds normally. On the other hand, the horizontal direction means a direction orthogonal to the vertical direction, and usually corresponds to the course direction of the knitted fabric.

  As the yarn of 50% by weight or more of the yarn constituting the cloth covering the ankle portion and / or the calf portion, it is preferable to use a spun yarn. Preferably, 55% by weight or more, more preferably 60% by weight or more, and a spun yarn is used as the yarn constituting the fabric of the ankle part and / or calf part. Due to the short fibers constituting the spun yarn, moderate softness is imparted to the yarn, and fine irregularities are formed on the surface of the yarn, thereby improving the adhesion to the skin and making it difficult for deviation to occur.

  Moreover, it is preferable to use the thread | yarn which consists of a cellulose fiber as a material of 50 weight% or more of the thread | yarn which comprises the cloth which covers an ankle part and / or a calf part. Preferably, a yarn made of cellulose fiber is used as the yarn constituting the cloth structure of the ankle portion and / or calf portion, preferably 55% by weight or more, more preferably 60% by weight or more. As a result, the sock or cylindrical lower limb supporter absorbs sweat well, and even if it is used for a long time, it is hard to get stuffy, has a good touch, and has a very good wearing feeling.

Further, the cellulose fiber preferably comprises a carboxyalkylated cellulose fiber in which at least a part of the carboxyalkyl group is substituted with an antibacterial metal carboxyalkyl group. Examples of the antibacterial metal include zinc, silver, and copper. Zinc that is not discolored by oxidation or the like even when used for a long period of time is preferable. The average substitution degree of the carboxyalkyl group by the antibacterial metal carboxyalkyl group (number of moles of carboxyalkyl group per anhydroglucose unit of cellulose constituting the cellulose fiber) is preferably 0.01 to 0.3. . By performing such a treatment, it is possible to impart continuous antibacterial properties and deodorizing properties while maintaining a good texture. The antibacterial metal carboxyalkylation of the cellulose fiber can utilize a conventional method, for example, by converting the alkali metal to the antibacterial metal by metal ion exchange reaction after alkali metal carboxyalkylation of the cellulose fiber. be able to.
Moreover, as a method for imparting antibacterial properties and deodorizing properties, as long as the touch of a cloth such as socks and the set pressure pressure are not impaired, the cellulose fibers other than the method for antibacterial metal carboxyalkylation are used. As a method, you may use the method of apply | coating or impregnating other antibacterial agents and deodorizers to cloths and threads, such as socks. Furthermore, a substance that adjusts the physiological function of the skin for the purpose of moisturizing the skin, preventing aging, and whitening, and a substance such as a fragrance can be applied or impregnated on a cloth or thread such as socks.

The sock or tubular lower limb supporter of the present invention obtained by the method as described above has a compression energy of the ankle part and / or calf part of 0.35 to 3.5 gf · cm / cm ^2. Is preferred. By setting the compression energy in such a range, a soft skin contact surface is formed, and a suitable buffering action is exerted against contact from the outside, and comfort at the time of wearing is improved. Moreover, as mentioned above, it is preferable that the surface roughness of the cloth structure of an ankle part and / or a calf part is 25.0 or less.

  Next, a preferred knitted structure embodiment of the present invention is shown in FIG. In FIG. 2, 20 and 21 are yarns that form stitches that are continuous in the horizontal direction, 22 is an elastic yarn that is inserted in the horizontal direction, and these yarns constitute a fabric that covers an ankle part and a calf part of socks and the like. It is. In the embodiment of FIG. 2, a yarn having a thickness in the range of 212 to 700 μm is used for the yarn 20 constituting the stitch. 20 is a spun yarn made of cotton, for example, 21 is an elastic yarn in which a polyurethane elastic yarn is single-covered with a nylon yarn, and 22 is an elastic yarn in which a polyurethane elastic yarn is double-covered with a nylon yarn, for example. 2a shows a knitting structure in which the spun yarn 20 and the elastic yarn 21 run in parallel to form the same stitch by two yarns, and FIG. 2b) shows the spun yarn 20 and the elastic yarn. 21 shows a knitting structure in which different stitches (courses) are alternately configured.

  The sock or tubular lower limb supporter of the present invention provides a predetermined pressure distribution for reducing fatigue of the wearer and preventing or treating a disease at the ankle and / or calf. The compression pressure can be given a predetermined value by controlling the density of the yarn, the size of the stitches, and the degree of elongation of the elastic yarn. It is also possible to apply the compression pressure by stitching an elastic fabric at the position where the compression pressure is applied, or by applying or impregnating an elastic resin.

  The compression pressure distribution is preferably a compression pressure distribution in which the compression pressure sequentially decreases from the ankle portion to the calf portion. Moreover, it is preferable that the compression pressure of an ankle part is higher than the compression pressure of a calf part, and are 18-67 hPa and 9-54 hPa, respectively. In addition, the compression pressure of each said part is defined as a measurement pressure based on the following measurement parts and measurement methods.

  The ankle portion is the lower leg minimum surrounding portion, and the calf portion is the lower leg maximum surrounding portion. The pressure is measured by the following procedure using a pressure measuring device MST (manufactured by Salzmann AG). First, a probe of a measuring instrument is installed on the hard wooden or plastic foot. The foot shape has a cylindrical section with a circumference equivalent to the average Japanese body shape, and the foot shape specified there is used for measurement according to the sock size shown below. In addition, when the applicable perimeter of the sock extends over a plurality of sizes, an ankle having the ankle perimeter that is closest to the median value of the ankle applicable perimeter of the sock is used for the measurement.

Size 1: Socks with an applicable perimeter in the range of 15 to 19 cm at the ankle and 24 to 30 cm at the calf. An ankle with a circumference of 17 cm at the ankle, 27 cm at the calf, and 41.2 cm at the center of the thigh is used.
Size 2: Socks whose applicable perimeter is in the range of 17 to 21 cm at the ankle and 28 to 34 cm at the calf. An ankle with a circumference of 19 cm at the ankle, 31 cm at the calf, and 44.7 cm at the center of the thigh is used.
Size 3: Socks with an applicable perimeter in the range of 19-23 cm at the ankle and 32-38 cm at the calf. An ankle with a circumference of 21 cm at the ankle, 35 cm at the calf, and 46.5 cm at the center of the thigh is used.
Size 4: Socks having an applicable perimeter in the range of 21 to 25 cm at the ankle and 36 to 42 cm at the calf. An ankle with a circumference of 23 cm at the ankle, 39 cm at the calf, and 48.4 cm at the center of the thigh is used.
Size 5: Socks with an applicable perimeter in the range of ankle 23-27 cm and calf 40-46 cm. A foot with a circumference of 25 cm at the ankle, 43 cm at the calf, and 51.1 cm at the center of the thigh is used.
Next, an elastic sock is attached to the foot mold, the pressure at each part is measured, and this value is taken as the compression pressure.

Next, about the Example of this invention, the result evaluated with the comparative example is described below based on FIG.

Example 1
A sock type sock was knitted by the knitting structure as shown in FIG.
The yarn that forms the flat knitted stitch is made of elastic elastic yarn and cotton spun yarn covered with polyurethane elastic yarn with wooly nylon yarn. Polyurethane elastic yarn is double-covered with nylon yarn as the yarn to be inserted from the side into the stitch. Used elastic yarn.
This sock is immersed in an aqueous solution in which both sodium monochloroacetate and sodium hydroxide are dissolved, and then the sock is dehydrated at an appropriate dehydration rate, and then dried until it becomes completely dry, and the cellulose in the cotton spun yarn The fiber was sodium carboxymethylated. Thereafter, the socks were immersed in an aqueous solution in which zinc sulfate heptahydrate, acetic acid and sodium acetate were dissolved to neutralize, and at the same time, sodium carboxymethylated cellulose fibers were converted to zinc carboxymethylated cellulose fibers. Thereafter, the remaining zinc sulfate, acetic acid, and sodium acetate were removed by washing with water, followed by drying to obtain socks with zinc carboxymethylation of the cotton spun yarn (average substitution degree 0.03).
The thickness, ratio, etc. of the yarn used are shown in FIG. The socks obtained in this way correspond to the above-mentioned size 3, and the pressure distribution of the socks was 20.6 hPa at the ankle part and 17.0 hPa at the calf part.

(Example 2)
A sock-type sock was produced in the same manner as in Example 1 except that the type and ratio of the yarn used were changed. The thickness, ratio, etc. of the yarn used are shown in FIG. The socks obtained in this manner correspond to the above-mentioned size 3, and the pressure distribution of the socks was 25.3 hPa at the ankle part and 20.9 hPa at the calf part.

(Example 3)
Socks-type socks were knitted by using elastic yarn and cotton spun yarn with rubber elastic yarn single-covered with wooly nylon yarn as the yarn constituting the rubber knitting stitch. The thickness, ratio, etc. of the yarn used are shown in FIG. The socks obtained in this manner correspond to the size 3 described above, and the pressure distribution of the socks was 20.0 hPa at the ankle and 18.2 hPa at the calf.

The following evaluation was performed about the Example of this invention. In addition, as a comparison with the examples of the present invention, commercially available socks type socks were used.
(Comparative Example 1)
Medical socks with a pressure distribution that gradually reduces the pressure from the ankle to the calf (brand name Ansilk II High Socks, M size, manufactured by ALCARE).
(Comparative Example 2)
Socks for daily life with a pressure distribution that gradually reduces the pressure from the ankle to the calf (trade name: Slim Walk Cotton, SM size, manufactured by Pip Tokyo).

(Thread thickness)
Loosen the thread from the cloth that covers the ankle and calf of the sock, and collect five at random. If multiple types of yarn are used, five are collected for each type of yarn. One end of the yarn is fixed, a weight of 50 g is hung on the other end, and the strain is eliminated, and the thickness of the yarn is measured using a 50 × electron microscope (VH-8000 manufactured by Keyence Corporation). The thickness of the yarn is expressed as an average value of the five yarns by measuring the distance between two points in the field of electron microscope, assuming that the yarn width is the yarn width in the direction perpendicular to the longitudinal direction of the yarn. .

(Cloth compression energy)
An automated compression tester (KESFB3-AUTO-A manufactured by Kato Tech Co., Ltd.) is used, and the compression energy is measured by the following method. A 5 × 5 cm test piece is taken from the sock ankle and calf fabrics. The test piece is placed in the center of the testing machine, and a compressive force is applied to the cloth at a speed of 0.2 mm / sec on a 2 cm ² circular plane, and the load is measured. The compression energy (gf · cm / cm ² ) is displayed as an average value of the measurement results of two samples. The larger the value of the compression energy, the easier it is to compress.

(Cloth surface roughness)
Using an automated surface testing machine (KESFB4-AUTO-A, manufactured by Kato Tech Co., Ltd.), the surface roughness is measured by the following method. A test piece having a size of 20 × 5 cm is collected from the fabric of the ankle and calf of the sock. A test piece to which 400 g of tension is applied is placed on the test machine, a 50 g metal friction element is placed on the test piece, the test piece is moved 20 mm back and forth, and the variation in the frictional force of the test piece is measured. The surface roughness is displayed as an average value of the measurement results of two samples calculated from the frictional force. The surface roughness indicates the variation of the unevenness on the surface of the fabric, and the larger the value, the larger the unevenness.

(Edema suppression effect)
Three test subjects wear socks according to Examples and Comparative Examples, and from there, a probe of a silicone tube filled with mercury (DE Hokason. Inc. Co., Ltd.) for inspecting the volume change in the calf portion. Strain gauge press chemograph EC-5R) is installed, and resting position is taken. The leg with socks in the resting position is raised to a position higher than the upper body to promote venous return and the measured venous volume (ml / dl) decreases and becomes constant (minimum venous volume). Record. Thereafter, the knee joint is seated at a right angle, and the value (maximum vein capacity) when the measured vein volume (ml / dl) rises and becomes constant is recorded. The difference between the maximum venous volume (ml / dl) and the minimum venous volume (ml / dl) is recorded as the amount of edema (ml / dl). A lower edema amount (ml / dl) indicates a higher edema suppression effect. Results are expressed as the average of 3 people.

(Comfort when wearing)
When evaluating the above “edema suppression effect”, the subject is allowed to walk on a treadmill for 20 minutes, and the degree of comfort after wearing the socks is evaluated in the following five levels, and the total score is scored. And A higher score indicates higher comfort.
5-point evaluation: 5 points that are comfortable, 4 points that are slightly comfortable, 3 points that are usually uncomfortable, 2 points that are slightly uncomfortable, and 1 point that is uncomfortable.

  These results are shown in FIG. It can be seen that the sock according to the example has high comfort even when worn for a long time, and also effectively exhibits the effect of suppressing edema. Moreover, the sock of Example 1 and Example 2 using the cotton spun yarn which carried out zinc carboxymethylation suppressed the smell of the sock compared with the other socks.

The side view of the sock which concerns on an example of embodiment of this invention. The figure which shows the knitting structure which concerns on an example of embodiment of this invention. The figure which shows the evaluation result of the Example and comparative example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Socks 2 Toe part 3 Abutment part 4 Ankle part 5 Calf part 6 Knee part 7 Foot mouth part 20 The thread | yarn which comprises a stitch 21 The thread | yarn which comprises a stitch | gear 22 The elastic thread inserted laterally

Claims (8)

  It consists of a cloth covering at least a part or all of the foot part, the ankle part, and the calf part. At the time of wearing, the ankle part and / or the calf part has a predetermined pressure for reducing fatigue, preventing or treating the disease. In the sock or cylindrical lower limb supporter in which the distribution acts, the thickness of 50% by weight or more of the yarn constituting the cloth covering the ankle portion and / or calf portion is 212 to 700 μm Socks or cylindrical lower limb supporter. ^2. The sock or tubular lower limb supporter according to claim 1, wherein the compression energy of the cloth covering the ankle portion and / or the calf portion is 0.35 to 3.5 gf · cm / cm ² .   3. The sock or tubular lower limb supporter according to claim 1, wherein the cloth covering the ankle and / or calf has a surface roughness of 25.0 or less.   The cloth covering the ankle part and / or calf part is composed of a knitted fabric, and 50% by weight or more of the yarn constituting the knitted fabric is a yarn constituting a stitch having a thickness of 212 to 700 μm. The sock or cylindrical lower limb supporter according to any one of claims 1 to 3.   The sock or tubular shape according to any one of claims 1 to 4, wherein 50% by weight or more of the yarn constituting the cloth covering the ankle portion and / or calf portion is a spun yarn. Lower limb supporter.   The sock according to any one of claims 1 to 5, wherein 50% by weight or more of the yarn constituting the cloth covering the ankle portion and / or calf portion is a yarn made of cellulose fiber. Or a cylindrical lower limb supporter.   The cellulose fiber comprises a carboxyalkylated cellulose fiber in which at least a part of a carboxyalkyl group is substituted with an antibacterial metal carboxyalkyl group, sock or tubular lower limb according to claim 6, Supporter. The sock or tubular lower limb supporter according to claim 1, wherein the predetermined compression pressure distribution is a distribution in which the compression pressure gradually decreases from the ankle portion to the calf portion.

Images