KR102366533B1 - Manufacturing method of personalized medical compression stockings - Google Patents

Abstract

The present invention relates to a method of manufacturing a personalized medical compression stocking specially manufactured so that blood can flow toward the heart due to the pressure difference by gradually reducing the pressure in each body part, such as ankle-calf-thigh, etc., and the present invention In the first step of measuring the length and circumference of each section of the wearer's lower extremities; and, the second step of calculating the number of knitting courses and rapid yarn speed in each area required for knitting; A third step of inputting the speed into the knitting program; and a fourth step of knitting the compression stocking; a fifth step of heat-shrinking the knitted stocking; and a sixth step of checking the size of each part of the heat-shrinkable stocking Disclosed is a method of manufacturing a personalized medical compression stockings comprising a; step.

Description

Manufacturing method of personalized medical compression stockings {Manufacturing method of personalized medical compression stockings}

The present invention relates to a method of manufacturing a personalized medical compression stocking specially manufactured so that blood can flow toward the heart due to the pressure difference by gradually reducing the pressure in each part of the body, such as ankle-calf-thigh.

Medical compression stockings are specially designed medical devices that gradually reduce pressure in each part of the body, such as ankles, calves, and thighs, so that blood flows toward the heart by the pressure difference.

These medical compression stockings use an elastic yarn such as spandex as a core and a synthetic fiber filament such as nylon or polyester as a covering yarn to cover them with S twist (or Z twist), and cover again with Z twist (or S twist) on it. Use a double covering yarn as a knitting yarn for knitting and an inlay for compression.

The knitting yarn plays a role in composing the body of the compression stocking by utilizing the three elements of general knit/turk/miss knitting, and the inlay yarn uses a thick spandex yarn and is rapidly spun at a pre-set rapid yarn speed when knitting. It plays a role in controlling the elasticity of the stocking body.

Since the core function of compression stockings is to apply relatively higher pressure to the area far from the heart, when supplying the inlay, if higher pressure is required for each area, increase the sudden yarn tension and then gradually lower the pressure. is to lower For this purpose, a knitting machine equipped with a separate part for controlling the feeding tension among the yarn feeding devices is used.

Compression stockings are divided into 4 levels. Based on the ankle area with the greatest compression, the 1st stage should have 18~21mmHg, the 2nd stage 23~32mmHg, the 3rd stage 34~46mmHg, and the 4th stage 49mmHg or more. In addition, when the ankle is 100%, the calf area is designed to have 50~80% pressure and the thigh area is designed to have 20~60% pressure.

However, these standards were developed overseas and designed by overseas standard body types, and it is difficult to expect the designed pressure from other body types. Therefore, in order to accurately implement such gradual compression, it is necessary to redesign the knitting conditions to fit one's body type. A change process is required. However, the compression stockings currently sold are mostly foreign products using standards developed abroad, so it is difficult to expect gradual decompression suitable for the Korean body type.

Therefore, in order to realize gradual decompression that is optimized for one's body type, the wearer knows the length of each section of the wearer's lower extremities and the size of the circumference in that part, and then measures the length between each part of the medical compression stocking and the circumference in that part accordingly. It has to be adjusted and organized.

1. Republic of Korea Patent Publication No. 10-0841001 2. Republic of Korea Patent Publication No. 10-1540906 3. Republic of Korea Patent Publication No. 10-1363802 4. Republic of Korea Patent Publication No. 10-1524019

The present invention has been devised in order to solve the above-mentioned conventional problems, and it is a task to provide a method for manufacturing a medical compression stocking optimized for the user's body type using a high-elasticity in-laid elastic yarn. .

The manufacturing method of the personalized medical compression stockings of the present invention that has solved the above problems is a first step of measuring the length and circumference of each section of the wearer's lower extremities; A second step of calculating a speed; A third step of inputting the calculated number of knitting courses and a yarn feed speed into a knitting program; A fourth step of knitting the compression stockings A fifth step of heat-shrinking the knitted stockings In the method of manufacturing a personalized medical compression stocking comprising; and a sixth step of checking the size of each part of the heat-shrink processed stocking,
The number of courses organized in the second step is characterized in that it is calculated by the following (Equation 1).

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(Equation 1) ----- (number of courses) = {(length between sections) (cm) × 10} + 6

The present invention also provides a method for manufacturing a personalized medical compression stocking, a first step of measuring the length and circumference of each section of the wearer's lower extremities; A second step; A third step of inputting the calculated number of knitting courses and a rapid yarn speed into a knitting program; A fourth step of knitting the compression stockings A fifth step of heat-shrinking the knitted stockings; And, In the method of manufacturing a personalized medical compression stocking comprising; a sixth step of checking the size of each part of the heat-shrink processed stocking,
The gold spinning speed of the second step is characterized in that it is calculated by the following (Equation 2).

(Equation 2) ----- (Rapid Fire Speed) = {(Knitting Circumference) × 7.5324} - 44.782

At this time, the number '7.5324' is the slope constant of the graph when the knitting circumferential slope and the rapid yarn speed are graphed, and '44.782' is the Y-intercept constant that meets the Y axis when the knitting circumference slope and the rapid yarn speed are expressed as a graph .

Preferably, the knitting circumference in (Equation 2) should be 6 cm or more.

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Here, the yarn used for knitting the compression stocking in the fourth step uses an in-laid elastic yarn, and the elastic yarn uses a servo motor to enable fine control of the rapid yarn tension in the knitting of the compression stocking in the fourth step. Knitting using a knitting machine equipped with a used yarn feeder separately, but receives information on the number of knitting courses and yarn speed for each knitting section inputted in the computer program written in step 3 above, and controls the number of cylinder rotations and yarn speed in the section It is characterized in that it is organized so that the pressure in the corresponding section can be adjusted for each part.

The elastic yarn arranges a polyurethane yarn having a fineness of 100 to 1,200 denier inside the core yarn, and prepares a nylon or polyester yarn having a fineness of 10 to 50 denier as a covering yarn, respectively, any of the nylon or polyester yarn Manufactured by a double covering process in which one is primarily covered inside in the s-direction or z-direction, and the other one of the nylon or polyester yarns is secondarily covered in the z-direction or s-direction, which is a direction different from the primary covering direction. It is characterized by using an elastic yarn having an elongation of 300 to 500% until fracture by covering the nylon or polyester yarn under the conditions of 1,000 to 1,500 TPM.

The manufacturing method of personalized medical compression stockings according to the present invention can expect the following effects.

[Technical aspect]

- Possible to upgrade medical compression stockings and develop customized products in Korea

With the development of yarn materials for compression stockings with data on the compression reduction characteristics by tensile and repeated use, it is possible to provide products with improved wearability, convenience, and durability compared to existing compression stockings.

[Economic and industrial aspects]

- Expected import substitution effect by localization of materials that were dependent on foreign production

It is judged that the localization of materials used in the production of related products will enable rapid import substitution. In particular, it is judged that it can lead to an increase in exports through the substitution of materials for foreign products as well as domestic production.

- Expected cost reduction effect through localization

Related foreign materials are mainly European products and have been imported at high cost due to high labor and logistics costs.

[Social aspect]

-Contribute to the promotion of public health through the dissemination and diffusion of medical compression stockings

In the case of the domestic market, it has passed the introduction period and is entering the early stage of growth. Through the development of domestic materials, it can contribute to the growth and spread of the domestic market, and furthermore, to the promotion of public health.

In the aging Korean society, the number of varicose veins patients is expected to continue to increase. Therefore, it is possible to contribute to the overall health of the nation by developing products suitable for Korean characteristics through the domestic production of textile products and materials for treatment.

1 is a block diagram showing a method of manufacturing a personalized medical compression stockings of the present invention.

Hereinafter, the present invention will be described in more detail.

In the present invention, the purpose of the present invention is to provide a method for manufacturing a personalized medical compression stocking specially manufactured so that the pressure in each body part, such as ankle-calf-thigh, is gradually reduced to allow blood to flow toward the heart by the pressure difference. as there is,

More specifically, when described with reference to the accompanying drawing 1,

1 is a block diagram illustrating a method of manufacturing a personalized medical compression stocking of the present invention, when the present invention is described with reference to this,

A method of manufacturing a personalized medical compression stocking according to the present invention comprises: a first step of measuring the length and circumference of each section of the lower extremity of the wearer;

a second step of calculating the number of knitting courses and the rapid yarn speed in each part required for knitting;

a third step of inputting the calculated number of knitting courses and rapid yarn speed into a knitting program;

A fourth step of knitting a compression stocking;

A fifth step of heat-shrink processing the flat stockings;

A sixth step of checking the size of each part of the heat-shrink processed stocking;

is made including

To explain this more specifically,

1. Step 1

The first step is a step of measuring the length and circumference of each section of the lower extremities of the wearer.

In medical compression stockings, the key factor that determines the pressure for each part is the wearer's body size, and even when wearing compression stockings with the same circumference, the larger the circumference of the wearer's part, the greater the pressure applied to the wearer's lower extremities. Determine the size of the compression stocking to be manufactured by measuring the length and circumference of each section.

2. Step 2

The second step is a step of calculating the number of knitting courses and the rapid yarn speed at each site required for knitting.

Using the length and circumference of each section of the wearer's lower extremities measured in the first step, the number of courses required for knitting the corresponding part and the rapid firing speed are converted by a calculation method calculated in advance.

As an example, as shown in Table 1 below for calculating the number of courses for each part section, a calculation formula derived through the pre-experimental results may be used.

section number of courses Knitted length (cm) B - B1 96 9 B1 - C 86 8 C - D 86 8 D - E 66 6 E - F 136 13 F - G 116 11

The relationship between the length of each section and the number of organized courses derived through this is as shown in Equation 1 below.

(Formula 1)---- (number of courses) = {(length between sections) (cm) × 10} + 6

The following <Figure 1> is a photograph showing the position of each section and part of Tables 1 and 2 of the compression stockings.

<Figure 1>

When described with reference to <Figure 1>,

At this time, the section of Table 1 is

The section B-B1 is the section from the ankle to the bottom of the calf when worn on the lower extremities of the body.

The section B1-C is the section from the bottom of the calf to the calf when worn on the lower extremities of the body.

The section C-D is the section from the calf to below the knee when worn on the lower extremities of the body.

The section D-E is the section from below the knee to the knee when worn on the lower extremities of the body.

The section E-F is the section from the knee to the lower part of the thigh when worn on the lower extremities of the body.

The F-G section is the section from the lower thigh to the thigh when worn on the lower extremities of the body.

In addition, for calculating the rapid death rate at each site, the formula derived from the pre-experimental results as shown in Table 2 below may be used.

part Rapid death rate (RPM) Knitted circumference (cm) B 72 15.0 B1 72 15.8 C 70 16.0 D 130 22.8 E 160 26.0 F 168 28.2 G 170 29.6

The calculation formula derived through this is as follows (Equation 2).

(Equation 2) ----- (Rapid Fire Speed) = {(Knitting Circumference) × 7.5324} - 44.782

At this time, the number '7.5324' is the slope constant of the graph when the knitting circumferential slope and the rapid yarn speed are graphed, and '44.782' is the Y-intercept constant that meets the Y axis when the knitting circumference slope and the rapid yarn speed are expressed as a graph .

Preferably, the knitting circumference in (Equation 2) should be 6 cm or more.

At this time, each part of Table 2 is

Part B is the ankle area when worn on the lower extremities of the body.

B1 is the lower part of the calf when worn on the lower extremities of the body.

Part C is the calf area when worn on the lower extremities of the body.

Part D is the area below the knee when worn on the lower extremities of the body.

Part E is the knee area when worn on the lower extremities of the body.

Part F is the lower part of the thigh when worn on the lower extremities of the body.

G is the thigh area when worn on the lower body.

3. Step 3

The third step is to input the number of knitting courses and the rapid yarn speed calculated in the second step into the knitting program.

The knitting program is created by inputting the number of knitting courses and the rapid yarn speed calculated in the second step into a program necessary for knitting the compression stockings.

3. Step 4

The fourth step is a compression stocking knitting step.

Knit the actual compression stockings using the created compression stocking knitting program.

More specifically, the compression stocking knitting in the fourth step is knitted using a knitting machine separately equipped with a yarn feed device using a servo motor to enable fine control of the feed yarn tension, but the knitting section is inputted into the computer program written in step 3 It is characterized in that it is organized so that the pressure in the corresponding section can be adjusted for each part by receiving information on the number of courses for each knitting and the rapid firing speed and controlling the number of cylinder rotations and the rapid firing speed in the corresponding section.

At this time, preferably, the yarn used for knitting the compression stocking in the fourth step uses an in-laid elastic yarn, and the elastic yarn is a polyurethane yarn having a high fineness of 100 to 1,200 denier disposed inside, 10 One of the nylon or polyester yarns having a low fineness of ~ 50 denier is primarily covered on the inside in the s-direction or z-direction, and the other one of the nylon or polyester yarns is secondarily covered in the z-direction or s-direction thereon However, it is to use an elastic yarn having a maximum elongation of 300 to 500% until rupture by covering under the conditions of 1,000 to 1,500 TPM when covering the nylon or polyester yarn.

5. Step 5

The fifth step is a step of heat-shrink processing the compression stockings knitted in the fourth step.

The heat-shrink processing is heat-shrinkable using a steam device so that the knitted yarn is thermally stabilized by heat-shrinkage.

Preferably, the heat shrink processing is performed under the condition that the yarn constituting the compression stockings are contracted by 5 to 20% by heat by treating the surface of the compression stockings using an iron capable of applying steam at 100° C. or higher, thereby having morphological stability.

6. Step 6

The sixth step is a step of confirming the size of each part of the compression stockings heat-shrinked in the fifth step.

It is to check the size of each part of the compression stockings knitted with different perimeters for each part to confirm that they are manufactured as designed.

It was confirmed from the experimental results as shown in Table 3 below that the compression stockings manufactured according to the above manufacturing process realized gradual decompression.

part Knitted circumference (cm) Measured pressure (mmHg) B 15.0 19.8 B1 15.8 19.0 C 16.0 13.0 D 22.8 8.1 E 26.0 8.2 F 28.2 7.5 G 29.6 7.2

The experiment in Table 3 shows the European (RAL-GZ 387) standard 'S' size with a pressure sensor that can simultaneously measure the pressure for each part (parts B, B2, C, D, E, F, G) The pressure stockings manufactured according to the manufacturing process were put on the wooden leg model made in the body shape and the pressure was measured for each part using a medical stocking pressure gauge. As this decreased, it was confirmed that the gradual decompression of the first stage required by the European standard (RAL-GZ 387) was realized.

As a result, the manufacturing method of the personalized medical compression stockings according to the present invention can be summarized in the manufacturing process as shown in FIG.

Claims (5)

delete A first step of measuring the length and circumference of each section of each part of the wearer's lower extremities; and a second step of calculating the number of knitting courses and rapid yarn speed in each area required for knitting; And, the calculated number of knitting courses and yarn speed. A third step of inputting into the knitting program; and a fourth step of knitting the compression stocking; a fifth step of heat-shrinking the knitted stocking; and a sixth step of checking the size of each part of the heat-shrinkable stocking In the method of manufacturing a personalized medical compression stocking comprising;
The number of knitting courses in the second step is a method of manufacturing personalized medical compression stockings, characterized in that calculated by the following (Equation 1)
(Formula 1) ----- (number of courses) = {(length between sections) (cm) × 10} + 6
(However, the knitted circumference must be at least 6 cm) A first step of measuring the length and circumference of each section of each part of the wearer's lower extremities; and a second step of calculating the number of knitting courses and rapid yarn speed in each area required for knitting; And, the calculated number of knitting courses and yarn speed. A third step of inputting into the knitting program; and a fourth step of knitting the compression stocking; a fifth step of heat-shrinking the knitted stocking; and a sixth step of checking the size of each part of the heat-shrinkable stocking In the method of manufacturing a personalized medical compression stocking comprising;
of the second step
The rapid death rate is a method of manufacturing a personalized medical compression stockings, characterized in that calculated by the following (Equation 2).
(Equation 2) ----- (Rapid Fire Speed) = {(Knitting Circumference)×7.5324} - 44.782
(Here, the knitting circumference must be 6cm or more) delete 4. The method of claim 2 or 3,
The yarn used for knitting the compression stocking in the fourth step uses an in-laid elastic yarn, and the elastic yarn is a polyurethane yarn having a fineness of 100 to 1,200 denier arranged inside the core yarn, and 10 to 50 Each of nylon or polyester yarn having a fineness of denier is prepared as a covering yarn, and any one of the nylon or polyester yarn is first covered on the inside in the s-direction or z-direction, and the other of the nylon or polyester yarn is thereon. It is an elastic yarn made by a double covering process of secondary covering one in the z-direction or s-direction, which is different from the primary covering direction. A method of manufacturing personalized medical compression stockings, characterized in that using an elastic yarn having an elongation of 300 to 500%.

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