JP2002069702A - Pantyhose - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pantyhose realizing comfortable wear feeling without giving a wearer any tightened feeling during exercise or change of the posture of the wearer while keeping enough venous return effect. SOLUTION: This pantyhose is such that at least a pair of leg parts has wearing pressure to push up the blood against the gravity so as to be easy for the venous blood to flow back, and also has such a wearing pressure balance that the wearing pressure becomes weak in the direction from the ankle to the femoral part according to the hydrostatic pressure balance based on the human physiology; wherein knit stitches forming the front and back faces of the leg portion are larger than knit stitches forming both side faces of the leg part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to pantyhose.

[0002]

2. Description of the Related Art From the viewpoint of comfort at the time of wearing and the like, various methods of varying the pressure applied to each part of pantyhose have been conventionally proposed. For example, Patent No. 282
Japanese Patent Publication No. 2090 (Prior Art Document 1) describes a pantyhose that gives a comfortable wearing feeling by gradually decreasing the pressure applied from the arch to the ankle, the calf, and the thigh. Further, there has been proposed a technique for controlling a vein by using a stocking. For example, Japanese Unexamined Patent Publication No. Hei 7-98053 (prior art document 2) and Japanese Unexamined Patent Publication No. Hei 8-199404 (prior art document 3) have disclosed. I have.

[0003] Prior Art 2 discloses ankles, calves,
A venous disease treatment stocking is described in which the vein is controlled by weakening the compressive force in the order of the thighs. Prior Document 3 also describes a pantyhose in which the pressure applied to the calf is stronger than that of the other parts.

[0004]

In a stocking for the purpose of controlling veins, a certain amount or more of power (clamping force) is applied to the foot by an optimal pressure balance in order to promote venous return to some extent. It is organized as follows. At this time, in order to effectively return the veins, it is necessary to apply a somewhat strong power to the feet. However, when the power is increased, the cloth (knitted fabric) becomes harder and the elasticity decreases in proportion thereto. As a result, the user feels cramped when exercising and the feeling of comfortable wearing is impaired, so strong power cannot be given to the feet, and effective venous return has not been sufficiently realized. Was.

The present invention has been made in view of the above problems, and has a strong power that can sufficiently return the veins to the veins, while reducing the cramped feeling during exercise and providing comfortable wear. The task is to realize the feeling.

[0006]

Means for Solving the Problems To solve the above-mentioned problems, (1) a good wearing pressure (hereinafter referred to as comfortable wearing) from the viewpoint of physiological function and wearing feeling based on hydrostatic pressure balance. It is necessary to practice the design (called pressure) and (2) to devise the knitting method of the leg part to eliminate the cramped feeling during exercise. In the blood circulatory system, a push-up force corresponding to hydrostatic pressure, which opposes gravity in human physiology, is required. For this reason, in order to promote venous return by pantyhose, a gradation-like pressure balance has a certain tightening force so that blood can easily return against the gravity, and the tightening force becomes weaker as it approaches the heart. (The realization of hydrostatic pressure theory based on the concept of the circulatory system). This is the meaning of the above (1).

In the present invention, in addition to securing comfortable wearing pressure according to (1), the knitting design of the leg portion is devised to eliminate the feeling of cramp during exercise. That is, in the pantyhose according to the present invention, at least one pair of leg portions has a pressure for pushing up blood against gravity so that the vein can easily return, and also has a large pressure from the ankle according to the hydrostatic pressure balance in human physiology. It has a pressure balance that becomes weaker toward the thigh, and the stitches forming the front and back surfaces of the leg portion are configured to be larger than the stitches forming both side surfaces of the leg portion. It is characterized by.

According to this means, the stitches on the front and back sides of the leg portion are configured to be larger than the stitches on both side surfaces of the leg portion. It is easy to stretch, and it is possible to reduce the cramped feeling during exercise while securing comfortable wearing pressure based on the hydrostatic pressure balance. In order not to inhibit venous return,
It is preferable that the contact pressure of the silicon part in the sitting position is 25 gf / cm ² or less. In order to perform sufficient venous return, the pressure on the thigh in the upright position is 9 to 17 gf / cm.
^2. It is preferable that the pressure applied to the lower leg is 14 to 28 gf / cm ² , and the pressure applied to the ankle is 17 to 35 gf / cm ² .

In consideration of the fact that the muscles of the calf, ie, the largest diameter portion of the lower leg, effectively act on the venous return effect, the pressure applied to the calf is slightly stronger than the pressure applied according to the hydrostatic pressure balance. Preferably, it is set.
In this case, the venous return effect can be further enhanced. The pressure applied in the present invention was measured using an air pack type AMI3037 clothing pressure transducer manufactured by AIMI Corporation. Further, the pantyhose in the present invention includes tights.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows the state of the tightening force (applied pressure) of the pantyhose 1 according to the embodiment in comparison with the tightening power according to the hydrostatic pressure. In order to promote venous return (return of blood), it is necessary to push up blood by a pressure (clamping force) that is not defeated by gravity. It is necessary to design the degree of tightening such that the ankle 7 farther from the heart becomes stronger and the closer to the heart, the weaker the gradation balance.

The straight line L1 in FIG. 1 shows the balance of the tightening according to the hydrostatic pressure. When the tightening force of the ankle 7 is 10 in the standing position, the tightening force of the lower leg (calf) 6 is 8, and the thigh is 8 The tightening force of 4 is set to 5. Note that numerical values such as “10, 8, 5” are approximate values and have some width. Specifically, the pressure applied to the thigh is 9 to 17 gf / cm ² , and the pressure applied to the lower leg is 14 to 28 g.
Within the range of f / cm ² and the ankle pressure of 17 to 35 gf / cm ² , the pressure of each part can be set along the above balance.

[0012] Within these ranges, a good feeling of wearing can be realized while venous return is performed. Such a range of the wearing pressure is called a comfort zone. In FIG. 1, the straight line L2 is
Fig. 3 shows a tightening balance of the pantyhose 1 according to the embodiment, and the tightening balance does not completely match the hydrostatic pressure balance, though it is in line with the hydrostatic pressure balance. First,
The tightening force of the calf, which is the maximum diameter of the lower leg, is set slightly larger than the hydrostatic pressure balance L1. In the calf, the muscle pumping action on the venous return works particularly effectively. Therefore, it is preferable to set the tightening force to the part from a little below slightly higher so as to support the action of the calf muscle to push up the blood. In addition, when the pressure applied to the calf is increased, an effect of making the ankle look thinner occurs in addition to the venous return effect.

Further, when the contact pressure of the portion 2 in the sitting position is 2
It is preferably at most 5 gf / cm ² . In order not to inhibit the venous return, the pressure of the silicon part 2 is particularly important. This is because, as shown in FIG. 2, the compression of the bellows portion 2 inhibits the return of blood and causes blood to accumulate in the entire lower limb.
As described above, if the leg portion has a pressure applied in accordance with the above-mentioned hydrostatic pressure balance and an attempt is made to achieve effective venous return, a feeling of tightening is generated, and the user feels cramped during exercise. . Therefore, the stitches forming the front and back surfaces of the leg portion are configured to be larger than the stitches forming both side surfaces of the leg portion.

The size of the stitch is adjusted by providing a stitch difference. That is, the stitches for knitting the front and back of the leg are set larger than those for knitting both sides of the leg. As a result, the stitch difference between the front and back sides of the leg portion is larger than that on both sides, so that the knitted loop becomes large, the stitch becomes coarse, and the cloth (knitted fabric) is easily stretched. On both sides, the stitch difference is smaller than the front and back sides, so that the knit loop is also small, the stitches are dense, and the knitted fabric is difficult to stretch.

At this time, the stitch difference is 0.1 to 0.3 m
m is preferable. If the thickness is less than 0.1, there is no difference in the stretchability of the cloth, and if it exceeds 0.3 mm, the difference in the size of the knitted loop is visually recognized.
<Example> To a polyurethane elastic yarn of 50 denier, 7
A double-covering yarn obtained by alternately covering denier and 5-filament nylon yarn filament yarns in the S and Z directions, and a 15-denier and 5-filament nylon raw yarn were used. In a stocking knitting machine with 400 needles, the cylinder is divided into four by 100 needles, and a stitch difference of 0.2 mm is provided between the left and right 100 stitches with respect to the front and rear 100 stitches. The covering yarn and the raw yarn were alternately knitted every other course to form a leg portion.

A portion with a large stitch has a large knit loop and a stitch is coarse and easily stretched, and a portion with a small stitch has a dense stitch and is difficult to stretch. A pantyhose was manufactured with a configuration in which a large portion of the knitted loop was arranged on the front and back of the leg portion and small portions were arranged on both side surfaces of the leg portion. Pressure applied to each part of the embodiment (unit is gf / c
m ² ) is 23.5 for ankle and 2 for lower leg in standing position.
0.2, 9.7 for knee, 11.5 for thigh, 1 for sokei
With 3.0, an ideal pressure gradation is realized. In addition, the seating pressure for the knee is 9.7 to 19.0 for the knee.
In the meantime, the temperature of the silicon part changed from 13.0 to 20.3.

When the stitch difference is not made with the same configuration as that of the embodiment, the pressure applied to the knee is from 9.7 in the standing position to 24.5 in the sitting position.
And changed. <Evaluation> The examples were compared with Comparative Examples 1 and 2 and evaluated. The details of the evaluation will be described with reference to FIGS.
In Comparative Examples 1 and 2, although the legs have gradations of compression based on hydrostatic pressure balance, they are knitted with stitches of a fixed size. (1) Evaluation by wearing pressure: The change in the wearing pressure of each part of the leg portion when the posture was changed from the standing position to the sitting position was measured. The results are shown in FIG. According to this result, in the example, the amount of increase in the contact pressure of the knee when the posture is changed is about 50 to 60% lower than the amount of increase in the comparative example.

Further, in the example, the pressure applied to the bellows portion in the sitting position was lower than that in the comparative example, and the result did not inhibit venous return. (2) Evaluation based on cardiac output: According to "Sterling's Theory of Heart", a single output depends on the amount of venous return, so one output was used as an index of venous return.
FIG. 4 shows a calculation result of a change rate of the stroke volume at 10 minutes after standing and standing based on the position immediately after standing. Only in the embodiment, the value is positive, and the cardiac output is recovered once. That is, it is suggested that the examples have sufficient power to promote venous return, but the powers of comparative examples 1 and 2 are insufficient. (3) Evaluation by reaction rate: reaction time before wearing was 100
It was calculated as FIG. 5 shows the results. It can be seen that in the examples, the reaction time during wearing is short, and the stress is small and comfortable. (4) Evaluation by α wave recovery test: Immediately after wearing, wearing 5
After a second, 10 seconds after wearing, and 15 seconds after wearing, the α-wave generation state was determined by ESA-16 manufactured by NF Circuit Design Block Co., Ltd.
It was measured by a sensitivity spectrum analyzer and the recovery state of the α-wave was observed. FIG. 6 shows the results.

FIG. 6 shows the state of generation of α-waves in the brain. A region A of a vertical stripe pattern and a region B of a black portion are represented by α.
Wave generation area. In the example, the recovery of the α-wave immediately after wearing was quick, and the amount was larger than that in the comparative example. From these results, it can be seen that the example has a more comfortable wearing feeling than the comparative example. (5) Evaluation by leg part transparency and burst strength: FIG. 7 shows the result of measuring the transparency, and FIG. 8 shows the result of measuring the burst strength. It can be seen that the examples have high levels in both transparency and burst strength.

The transparency was measured by a light source transmittance measurement, and the burst strength was measured by a burst strength A method of JISL1018. (6) Comprehensive evaluation: The results of the above (1) to (5) are shown in a graph shown in FIG. 9, and comprehensive evaluation was performed. Here, the skin care effect is also evaluated. The embodiment is excellent in terms of the gradation design based on the hydrostatic pressure balance theory of the leg portion and the adoption of a specific knitting structure, from the physiological viewpoint of venous return, and also from the viewpoint of the comfortable wearing feeling of eliminating the cramped feeling. It can be said that the pantyhose has a function.

[0021]

According to the present invention, at least one pair of legs of the pantyhose has a sufficient tightening force based on a pressure gradation design based on the hydrostatic pressure balance theory, and the front and back of the legs have legs. It is knitted with a large stitch extending from both sides of the section. Therefore, it is possible to realize a comfortable wearing feeling without cramping during exercise or posture change while maintaining a sufficient venous return effect.

[Brief description of the drawings]

FIG. 1 is a diagram showing a relationship between a tightening power according to hydrostatic pressure and a degree of tightening of a pantyhose according to an embodiment.

FIG. 2 is a conceptual diagram showing that blood accumulates when pressure is applied to a part of the body during sitting.

FIG. 3 is a diagram showing a change in the contact pressure when the posture changes from a standing position to a sitting position.

FIG. 4 is a graph showing a change in a stroke output.

FIG. 5 is a graph showing a change rate of a reaction time.

FIG. 6 is a diagram showing a change in an α-wave generation state.

FIG. 7 is a graph showing transparency.

FIG. 8 is a graph showing burst strength.

FIG. 9 is a graph showing an overall evaluation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pantyhose 2 Sokei part 4 Thigh 6 Lower leg 7 Ankle

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Katsuya Abu, Inventor F-term (reference) 3B018 AA01 AB02 AC01 AD05 HA05 HB01 4C101 in the Socks Division, Building No.6, Senba-chuo, Building 2-3 Chuo-ku, Chuo-ku, Osaka-shi, Osaka BA01 BB01 BC04 BD01 BD26 BE01 BE03 EA06

Claims (4)

[Claims] At least one pair of leg portions has a pressure for pushing up blood against gravity so that veins can easily return, and also from an ankle to a thigh according to a hydrophysiological balance in human physiology. A pantyhose having a weak pressure balance, wherein stitches forming the front and back surfaces of the leg portion are configured to be larger than stitches forming both side surfaces of the leg portion. Pantyhose. 2. The pressure applied to the bellows portion in the sitting position is 25 gf.
The pantyhose according to claim 1, wherein the pantyhose is at most / cm ² . 3. The pressure applied to the thigh in a standing position is 9 to 17 g.
pantyhose according to claim 1 or ² f / cm 2, the wearing pressure of the crus 14~28gf / cm ^2, ankle wearing pressure is being in the range of 17~35gf / cm ² . 4. The pantyhose according to claim 1, wherein a pressure applied to the calf is set to be slightly higher than a pressure applied according to the hydrostatic pressure balance.