JP2016093465A - Thromboprophylaxis lower leg supporter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thromboprophylaxis lower leg supporter that suppresses reduction of a skin blood flow by the pressure of a wear's leg part (lower leg) entire circumference to a minimum and can be worn relatively comfortably.SOLUTION: A thromboprophylaxis lower leg supporter 10 includes: a cuff part (upper end cuff part 1a, and lower end cuff part 1b) becoming an upper end and a lower end of a cylindrical knitted fabric; a strong expansion and contraction part 2 avoiding a portion (blood storage opposite part 3a) opposed to the blood storage portion in a wearer's calf circumference front surface from a portion (storage part 2a) corresponding to a blood storage portion of a wearer's lower leg rear surface, being an upper end (upper end cuff part 1a) of a cylindrical knitted fabric and a lower end (lower end cuff part 1b) side, circulating the cylindrical knitted fabric toward a wearer's lower leg front surface, and having a stretching resistance larger than the upper end cuff part 1a; and a weak expansion and contraction part 3 being the blood storage opposite part 3a and having the stretching resistance lower than the upper end cuff part 1a.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a supporter for thromboprophylaxis for the purpose of promoting venous return by applying a strong pressure to the leg (lower leg).

  At present, elastic socks for medical use are mainly made in foreign countries such as Germany and the United States. Therefore, unlike Japanese leg (lower leg) size, the pressure is extremely high and conversely low, resulting in skin blood flow. There are doubts about inhibition and thrombus prevention effects. Therefore, there is a demand for the development of elastic socks with size adaptability that suit the Japanese.

  A conventional medical stocking is a medical stocking in which at least a leg portion is formed by an elastic knitted fabric knitted using a ground yarn and an insertion yarn having a compressive force stronger than the ground yarn, The ankle area from the calf to the lower end of the calf, the lower leg area from the lower end of the calf to the knee, and the thigh area from the knee to the base of the leg are gradually reduced in order, and the thread length of the ground thread and the thread length of the insertion thread Ratio in the lower leg region (thread length of the ground yarn): (thread length of the insertion yarn) = 4.3 to 6.0: 1, and in the thigh region (thread length of the ground yarn): (insertion yarn) Yarn length) = 3.3 to 5.0: 1 (see, for example, Patent Document 1).

  JP 2011-115571 A

  However, in the conventional medical stockings, although the pressure is gradually reduced in the order of the ankle region, the lower leg region, and the thigh region, the pressure design is not designed in each region. For this reason, in the lower leg region, the entire circumference of the wearer's leg (lower leg) is compressed (hoop tension), and in particular, the front part of the lower leg where the tibia is present is sensitive to pressure and is not affected by strong compression. There is a problem of great pleasure.

  The present invention has been made to solve the above-described problems, and can be worn relatively comfortably while minimizing a decrease in skin blood flow due to compression of the entire circumference of the wearer's leg (lower leg). An object of the present invention is to provide a thromboprophylaxis supporter capable of preventing blood clots.

  In the thromboprophylaxis lower leg supporter according to the present invention, from the mouth rubber part which becomes the upper end of the tubular knitted fabric and the part corresponding to the blood storage part of the wearer's lower leg back, Avoiding the facing parts, on the upper and lower ends of the tubular knitted fabric, turning around the tubular knitted fabric toward the front of the wearer's lower leg, and a strong stretchable part having a greater stretch resistance than the mouth rubber part, It is a part facing the blood storage part in the front surface of the maximum circumference of the wearer's lower leg, and includes a weakly stretchable part having a stretch resistance smaller than that of the mouth rubber part.

  In the thrombus-preventing crus supporter according to the present invention, the venous return amount of the wearer can be promoted to prevent the thrombus, and the skin blood flow can be reduced by the compression of the entire circumference of the wearer's leg (crus). Not only can it be worn relatively comfortably to the minimum, but even when the wearer's leg (lower leg) size is large, it can be compensated by the extension of the weakly stretchable part in front of the maximum lower leg circumference .

  (A) is a front view which shows schematic structure of the supporter for the thrombus prevention leg according to the first embodiment, (b) is a rear view of the supporter for the thrombus prevention leg shown in FIG. ) Is a left side view of the thrombus-preventing leg supporter shown in FIG. 1 (a), (d) is a plan view of the thrombus-preventing leg supporter shown in FIG. 1 (a), and FIG. It is a bottom view of the supporter for thromboprophylaxis shown in a).   (A) is a front view showing a wearing state of the supporter for the thrombus prevention leg, (b) is a rear view showing a wearing state of the supporter for the thrombus prevention leg, and (c) is a wearing state of the supporter for the thrombus prevention leg. FIG.   (A) is a graph which shows the extension characteristic of a course direction, (b) is a graph which shows the extension characteristic of a wale direction.   (A) is a graph showing the relationship between leg size (lower leg) size and elongation rate in M size thrombus prevention leg supporter, and (b) is the leg size (lower leg) size and elongation in M size medical elastic socks. It is a graph which shows the relationship of a rate.   (A) is a graph which shows the change of the elongation rate by the difference in the size of the supporter for thromboprophylaxis, and (b) is a graph which shows the change of the elongation rate by the difference in the size of the medical socks.   (A) is a graph which shows the relationship between a leg part (lower leg) dimension and the clothing pressure in a supine position, (b) is a graph which shows the average value of the clothing pressure in the lower leg maximum surrounding part for every body position.   (A) is a graph which shows the change of the clothing pressure of the maximum leg part in the standing position by the difference in the size of the supporter for the thrombus prevention leg, and (b) is the maximum of the lower leg in the standing position by the difference in the size of the medical elastic socks. It is a graph which shows the change of the clothing pressure of a surrounding part.   (A) is a graph which shows the change of the clothing pressure in the lower coquette penetration branch part by the difference in the size of the supporter for thromboprophylaxis, (b) is the clothes in the lower coquette penetration branch part by the difference in the size of the elastic socks for medical use It is a graph which shows the change of a pressure.   (A) is a graph which shows the change of the clothing pressure in the ankle part by the difference in the size of the supporter for thrombus prevention leg, (b) is the graph which shows the change in the clothing pressure in the ankle part by the difference in the size of the medical socks It is.

(First embodiment of the present invention)
The thromboprophylaxis supporter 10 is a cylinder that is knitted into a circular knitting with two knitting yarns by a sock knitting machine (for example, a knitting model “Lambda Anfine (number of needles: 144)” manufactured by Murata Manufacturing Co., Ltd.). It consists of a knitted fabric, surrounds the wearer's ankle joint, and has a length up to the wearer's knee.
The thromboprophylaxis lower leg supporter 10 is a rubber band that forms the upper and lower ends of a tubular knitted fabric (hereinafter, the upper rubber band is referred to as the “upper rubber band 1a” and the lower rubber band is defined as the lower rubber band. The structure including the “lower end rubber part 1b” will be described, but an elastic sock including a toe-molded part corresponding to the wearer's toe may be used instead of the lower end rubber part 1b.

  The thrombus-preventing crus supporter 10 includes an upper end mouth rubber part 1a, a lower end mouth rubber part 1b, and a part corresponding to a blood storage part on the rear surface of the wearer's lower leg (hereinafter referred to as "blood storage part 2a"). Avoid the portion (hereinafter referred to as “blood storage facing portion 3a”) that faces the blood storage portion on the front surface of the maximum lower leg, and the upper end (upper end rubber portion 1a) and lower end (lower end mouth rubber portion 1b) side of the tubular knitted fabric These are the strong stretchable part 2 having a greater stretch resistance than the upper end mouth rubber part 1a and the blood storage facing part 3a, which wraps around the tubular knitted fabric toward the front of the lower leg of the wearer, and from the upper end mouth rubber part 1a. And a weakly stretchable portion 3 having a small stretch resistance.

As described above, the thromboprophylaxis supporter 10 includes the strong stretchable part 2 that goes around the tubular knitted fabric from the blood reservoir 2a toward the front surface of the wearer's lower crus at the maximum, thereby storing the blood reservoir 2a (strong stretchable part 2). ) Strongly pressurizes the blood storage part on the back of the lower leg of the wearer and promotes the muscle pumping action, thereby promoting the wearer's venous return and preventing thrombus in the wearer's lower leg.
In addition, the thrombus-preventing lower leg supporter 10 is provided with the weak elastic part 3 (blood storage facing part 3a) in the part corresponding to the front surface of the wearer's lower leg, so that the strong elastic part 2 is provided on the front surface of the wearer's lower leg. It is possible to avoid compressing (hoop tension) the entire circumference of the leg (lower leg) and to minimize the decrease in skin blood flow due to the compression.
Further, the thrombus prevention lower leg supporter 10 is provided with the weak elastic part 3 (blood storage facing part 3a) in the part corresponding to the front surface of the wearer's lower leg, so that the wearer's leg (lower leg) size is large. In addition, it can be compensated by the extension of the weak stretchable part 3 on the front surface of the maximum crus, and the front part of the crus where the pressure sensation is sensitive can be weakly pressed to be worn relatively comfortably.

The strong stretchable part 2 is a portion corresponding to a penetrating branch (upper coquette penetrating branch, intermediate coquette penetrating branch, lower coquette penetrating branch) that connects the wearer's superficial vein and deep vein (particularly the lower leg of the wearer). The portion corresponding to the lower coquette penetrating branch existing in the vicinity of the minimum surrounding portion is referred to as “lower penetrating branch corresponding portion 2b”).
As described above, the thrombus-preventing crus supporter 10 has the strong expansion / contraction part 2 in the portion corresponding to the wearer's coquette penetration branch, so that the strong expansion / contraction part 2 strongly presses the wearer's coquette penetration branch. The blood flow of the venous vein is efficiently sent to the deep veins (especially the soleus muscle veins where thrombus occurs frequently), and the venous return of the deep veins of the wearer is promoted, thereby deep clots of the wearer's lower leg. Can prevent the disease.

Here, the penetrating branch plays a role of traffic connecting the superficial vein and the deep vein, and since the penetrating branch has a valve, blood flows only in one direction from the superficial to the deep part. For this reason, there is also a principle of VDT (visual display terminal syndrome) prevention by the supporter 10 for thromboprophylaxis, which compresses the superficial vein to increase the blood flow of the deep vein and prevent the blood flow stagnation. It is the beginning.
In addition, there are three upper, upper, and lower (lower) pierced branches in the lower half of the lower leg and connect the posterior arcuate vein and the posterior tibial vein. The most functionally important part is the middle middle. This is because the blood vessels pass through the anterior surface of the soleus vein, which is most involved in the generation of VDT, and thus receive the venous return of the soleus vein.

The strong stretchable part 2 extends to a part corresponding to the sole of the wearer (hereinafter referred to as “foot sole part 2c”) and circulates around the tubular knitted fabric.
As described above, the thrombus-preventing crus supporter 10 has the strong stretchable part 2 extending to the sole part 2c, so that the blood storing part 2a from the blood storing part on the rear surface of the wearer's lower leg together with the lower penetrating branch corresponding part 2b. Functions as an anchor to prevent displacement.

Furthermore, the weak expansion / contraction part 3 exists in the part (henceforth the bending part 3b) corresponding to the bending part of a wearer's ankle joint.
As described above, the thrombus-preventing crus supporter 10 can weakly compress the bending part 3b where the thrombus-preventing crus supporter 10 is liable to be strongly compressed due to the presence of the weak stretchable part 3 in the bending part 3b. The pain of the wearer due to the bent portion 3b can be eliminated.

  In addition, the weak stretchable part 3 has a heel-molded part (hereinafter referred to as a “heel part 3 c”) corresponding to the wearer's heel, and a region between the upper end rubber part 1 a and the blood reservoir 2 a (hereinafter referred to as “first region”). 3d "), a region between the blood reservoir 2a (the portion corresponding to the intermediate coquette penetrating branch) and the lower penetrating branch corresponding portion 2b (hereinafter referred to as" second region 3e "), and the lower penetrating branch corresponding portion 2b And an area between the heel part 3c (hereinafter referred to as “third area 3f”), an area between the heel part 3c and the sole part 2c (hereinafter referred to as “fourth area 3g”), and a sole part 2c. And a region between the lower end rubber part 1b (hereinafter referred to as “fifth region 3h”).

  In particular, the weak extension / contraction part 3 exists in the second area 3e, thereby avoiding pressing by the strong extension / contraction part 2 on the area between the wearer's middle coquette penetration branch and the lower coquette penetration branch, thereby reducing the wearer's lower coquette. The strong stretchable part 2 can be efficiently pressed against the penetrating branch.

  In addition, the weak expansion-contraction part 3 which concerns on this embodiment (Blood storage opposing part 3a, bending part 3b, collar part 3c, 1st area | region 3d, 2nd area | region 3e, 3rd area | region 3f, 4th area | region 3g, 5th area | region 3h) Is knitted with plain knitting, which is a knitted fabric with continuous stitches and distinction between front and back.

The upper end rubber part 1a according to the present embodiment has a flat knitted fabric continuing from the first region 3d (weakly stretchable part 3) folded back inward at the upper end and sewn to the first region 3d (weakly stretchable part 3). It is a double flat knitted fabric.
Similarly, the lower-end rubber part 1b according to the present embodiment folds the flat knitted fabric continuing from the fifth region 3h (weakly stretchable part 3) inward at the lower end, and sews it to the fifth region 3h (weakly stretchable part 3). Made of double flat knitted fabric.

  Further, the strong stretchable part 2 (blood storing part 2a, lower penetrating branch corresponding part 2b, sole part 2c) according to the present embodiment is knitted with a knitted fabric composed of a knitted fabric using both a flat knitting and a splicing knitting, By supplying other knitting yarn (for example, woolly nylon yarn) in addition to the plain knitting yarn, the expansion and contraction is moderately suppressed. Cut (cut boss).

Further, in the present embodiment, as the ground knitting yarn used for the upper end rubber part 1a, the lower end rubber part 1b, the strong elastic part 2 and the weak elastic part 3, the filament count is applied to the elastic core yarn of polyurethane having a thickness of 20 denier. Two covered yarns (FTY: yarn twisted yarn) wound with 46 70-denier nylon yarns are used, but the yarn is not limited to this.
In the present embodiment, as another knitting yarn used for the strong stretchable portion 2, one woolen nylon yarn having a filament count of 46 and a thickness of 70 denier is used. However, the knitting yarn is limited to this. It is not a thing.
Further, in this embodiment, as a make part (thread for stopping the woolen nylon thread) with respect to the other knitting yarn used for the strong stretchable part 2, one woolen nylon thread having a filament count of 46 and a thickness of 70 denier double thread is used. Although used, it is not limited to this knitting yarn.

Next, clothes in the supporter 100 for thromboprophylaxis according to this embodiment (M size: Example 1, S size: Example 2) and two types of commercially available medical socks (Comparative Example 1, Comparative Example 2) The measurement results of pressure will be described with reference to Table 1.
The clothing pressure was measured using a mannequin having a standard size for women in their twenties. Also, the clothing pressure (P) generated by wearing clothes (thrombus prevention leg supporter 100, medical socks) Is assumed to be a sphere, it is calculated by equation (1).
In particular, in the case of the legs, since the pressure receiving portion is assumed to be a cylinder, the clothing pressure (P) generated by wearing clothes (thrombus prevention crus supporter 100, medical socks) is calculated by equation (2). .

  As shown in Table 1, two types of commercially available medical socks (Comparative Example 1 and Comparative Example 2) are compared with the thromboprophylaxis supporter 100 (Example 1 and Example 2) in the upper end mouth rubber part. It can be seen that the strength of the clothing pressure is very strong. In addition, since the commercially available medical socks (Comparative Example 2) were actually worn and suffered from internal bleeding at the upper end rubber part, the one having a pressure strength of 40 hpa or more at the upper end rubber part was long. Wearing time is difficult.

  Further, the supporter 100 for thromboprophylaxis (Example 1 and Example 2) has a very strong clothing pressure strength at the ankle portion as compared with two types of commercially available medical socks (Comparative Example 1 and Comparative Example 2). It can be seen that it is low. In addition, since the commercially available medical socks (Comparative Example 1) are painful to the ankle portion when actually worn, those having an ankle portion pressure strength of 30 hpa or more are difficult to wear for a long time.

In addition, the thromboprophylaxis supporter 100 for the crus (Examples 1 and 2) has the highest clothing pressure strength on the back of the crus (the blood reservoir 2a and the strong stretchable portion 2), and the strength of the clothing pressure in the upper end rubber part 1a. And the strength of clothing pressure at the front of the lower leg (blood storage facing portion 3a, weakly stretchable portion 3) is the lowest.
The thromboprophylaxis supporter 100 (Example 1 and Example 2) has a clothing pressure strength of about 20 hPa to 30 hPa on the back of the lower leg (blood storage part 2a, strong stretchable part 2). Feels very loose.
The reason for this is that the pressure on the front of the lower leg, which is sensitive to pressure, is low, and the thrombus-preventing lower leg supporter 100 (Example 1 and Example 2) has two types of commercially available socks (Comparative Example 1). It can be seen that the discomfort is reduced as compared with Comparative Example 2).

Next, using the support device 100 for thromboprophylaxis according to this embodiment and a commercially available elastic sock, the measurement of the elongation rate by the stamping method and the experiment of clothing pressure are performed, and the size adaptation of the thromboprophylaxis supporter 100 for thrombus prevention is performed. The results of studying the sex will be described.
In the experiment, as shown in Table 2, five sizes (0.6M, 0.8M, M, 1.2M, 1.M) of the thromboprophylaxis supporter 100 developed by controlling the loop length around the M dimension were used. 4M) and three sizes (S, M, L) of elastic socks for medical use (Comparative Example 1) were used as samples.
In Table 2, the length of the sample is the length from the upper end of the upper end rubber part to the upper end of the heel part, and the peripheral diameter of the sample is twice the width of the body part.

  FIG. 3 (a) shows the course direction stretch characteristics of each sample (strong stretchable part 2 of thrombus prevention leg supporter 100, weak stretchable part 3 of thrombus prevention leg supporter 100, medical elastic sock), FIG. 3B shows the stretch characteristics in the wale direction of each sample (strong stretchable part 2 of the thrombus prevention leg supporter 100, weak stretchable part 3 of the thrombus prevention leg supporter 100, medical elastic socks).

For the experiment method, the following two types of experiments were performed on size adaptability with 13 adult women (M size adaptation) as subjects.
In the experiment, the body type items (height, weight, midpoint height of the patella, maximum lower leg circumference, minimum lower leg circumference, BMI) were measured.

  The first experiment is a measurement of the local elongation rate by the stamping method, and a position corresponding to the front surface of the wearer's lower leg maximum circumference (blood storage facing portion 3a) and a position corresponding to the rear surface of the wearer's lower leg maximum enclosure (blood storage part). 2a) The subject is wearing a thrombus-preventing crus supporter 100 or medical elastic socks with a 2 cm diameter circular stamp on the subject, and the local elongation rate due to the difference in leg (crus) size when the subject is standing Was measured.

  The second experiment is the measurement of clothing pressure, using the “Airpack clothing pressure measuring device” manufactured by AIM Corporation, and wearing the thromboprophylaxis supporter 100 for thromboprophylaxis or medical elastic socks A position corresponding to the front face (blood storing facing part 3a), a position corresponding to the rear surface of the maximum crus of the subject (blood storing part 2a), a position corresponding to the lower coquette penetrating branch of the subject (lower penetrating branch corresponding part 2b), A total of four points of clothing pressure with a position corresponding to the ankle of the subject (bending portion 3b) were measured in a standing position, a chair sitting position, or a supine position.

First, the relationship between the leg (crus) dimension and the elongation based on the first experiment will be described with reference to FIG.
FIG. 4 (a) shows the relationship between the leg size (lower leg) size and the elongation rate of the subject wearing the M size thrombus prevention lower leg supporter 100, and FIG. 4 (b) shows the M size medical elastic sock. The relationship of the leg part (lower leg) dimension and elongation rate of the test subject who wears is shown.

As shown in FIG. 4 (a), the thrombus-preventing crus supporter 100 has a horizontal direction of the front surface of the maximum crus (blood storage facing portion 3a) as shown in FIG. 4 (a). Front side ") is greatly extended.
On the other hand, as shown in FIG. 4 (b), the elastic socks for medical use have a horizontal direction on the front surface of the maximum crus ("front side" shown in FIG. 4 (b)) even if the maximum crus circumference of the subject increases. ) Elongation is small, and the elongation in the horizontal direction of the front of the maximum lower leg ("front side" shown in Fig. 4 (b)) and the horizontal direction of the rear of the maximum lower leg ("back" shown in Fig. 4 (b)) There is almost no difference from the growth rate of “Horizontal”).
As described above, the thromboprophylaxis supporter 100 has a wide leg portion by extending the horizontal direction of the front surface of the maximum crus (blood storage facing portion 3a), which is the weak stretchable portion 3, as compared with a commercially available elastic sock for medical use. It can be seen that it can be adapted to the (lower leg) dimensions.

Next, the influence on the elongation rate due to the difference in the sizes of the thrombus prevention leg supporter 100 and the medical elastic socks based on the first experiment will be described with reference to FIG.
FIG. 5A shows an average value of the elongation rate of each size of the thrombus-preventing crus supporter 100, and FIG. 5B shows an average value of the elongation rate of each size of the medical elastic socks.

As shown in FIG. 5B, the elastic socks for medical use have almost no difference in elongation due to the difference in size.
On the other hand, as shown in FIG. 5 (a), the thrombus-preventing crus supporter 100 has a lateral direction of the front surface of the maximum crus (blood storage facing portion 3a) ("front side" shown in FIG. 5 (a)). The elongation rate decreases in the order of S size, M size, and L size (S (= 0.8M)>M> L (= 1.2M)). This is considered to be due to the fact that the actual size is increased according to the indicated size (S, M, L) of the supporter 100 for the thrombus prevention leg.

Next, the relationship between leg (crus) dimensions and clothing pressure based on the second experiment will be described with reference to FIG.
FIG. 6A shows the relationship between the leg (lower leg) size of the subject (wearer) and the clothing pressure in the supine position.
As shown in FIG. 6 (a), an M-size medical elastic sock (front of M: front of maximum lower leg, rear of M: maximum back of lower leg) is M size thrombus prevention supporter 100 (front of M). : The lower front of the upper leg, and the rear of the rear upper part of the upper leg). However, the increase in the clothing pressure caused by the increase in the maximum lower leg is caused by the thromboprophylaxis supporter 100 and the elastic socks for medical use. Almost nowhere.
The reason for this is that, as shown in the equation (2), the clothing pressure P is inversely proportional to the radius of curvature r2 of the pressure receiving portion, and the lateral direction of the clothing (thrombus prevention leg supporter 100, medical elastic socks) increases. Since it is directly proportional to the tension T2, it is considered that it is canceled out. However, because the length of the garment (thrombus prevention leg supporter 100, medical elastic socks) varies depending on the length of the midpoint of the subject's (wearer) patella, the effect of the horizontal tension difference on clothing pressure Is concerned.

Finally, the influence on the clothing pressure due to the difference between the posture of the subject (wearer) based on the second experiment and the size of the supporter 100 for the thrombus prevention leg and the elastic socks for medical use will be described with reference to FIG. .
FIG. 6B shows a test subject (wearer) for an S (= 0.8M) size thrombus prevention leg supporter 100, an M size thrombus prevention leg supporter 100, and an M size medical elastic sock. The average value of clothing pressure is shown for each body position.

As shown in FIG. 6 (b), in all samples, when the subject wears, the pressure applied to the tibia, the pressure receiving part is hard, and the clothing pressure is high on the front surface of the lower crus with a small curvature radius. It is large for elastic socks for medical use (before Medical M) and small for supporter 100 for thromboprophylaxis (before S, before M).
This is the effect of different shrinkage knitting in which the lower crus front surface (blood storage opposing portion 3a) of the thromboprophylaxis supporter 100 is a weakly stretchable portion 3.

In this experiment, the amount of venous return was not measured. However, if a clothing pressure comparable to that of a medical elastic sock is required, the thromboprophylaxis supporter 100 has a loop length of S size (0.8M). It is considered desirable.
In the elastic socks for medical use, as shown in FIG. 7 (b), there was almost no change in the clothing pressure in the maximum surrounding area of the lower leg due to the difference in size. As shown in FIG. 7 (a), there is a difference in clothing pressure at the maximum circumference of the lower leg in the standing position due to the difference in size among the SS size, S size, and M size (L size, LL size). It was. This indicates that the size of the supporter 100 for preventing thrombus is designed in accordance with the leg size.
Further, as shown in FIG. 6 (b), no change in clothing pressure due to the posture of the subject (wearer) was observed in the maximum lower leg encircling portion, but in the ankle portion and the lower coquette penetrating branch portion, As shown in FIG. 8 and FIG. 9, there was a difference in clothing pressure depending on the posture of the subject (wearer), such as a decrease in clothing pressure in the chair sitting position and the supine position.

  As described above, the thromboprophylaxis lower leg supporter 100 uses the leg (lower leg) maximum lower leg front surface (blood storage facing part 3a) as a weakly stretchable part 3, and the leg (lower leg) lower leg maximum surrounding rear surface (blood storage part 2a). ) Is knitted into the strong expansion / contraction part 2 to have size adaptability corresponding to the leg parts (lower leg) of different sizes.

DESCRIPTION OF SYMBOLS 1a Upper end mouth rubber part 1b Lower end mouth rubber part 2 Strong elastic part 2a Blood storage part 2b Lower penetration branch corresponding part 2c Sole part 3 Weak elastic part 3a Blood storage opposite part 3b Bending part 3c Bump part 3d 1st area 3e 2nd area 3f 3rd region 3g 4th region 3h 5th region 10 Supporter for thromboprophylaxis

Claims (4)

A support for a thrombus-preventing crus consisting of a tubular knitted fabric knitted with a circular knitting, surrounding the wearer's ankle joint, and having a length up to the knee of the wearer,
A mouth rubber part to be the upper end of the tubular knitted fabric;
The upper and lower end sides of the tubular knitted fabric, avoiding the portion facing the blood storage portion on the front surface of the wearer's lower crus from the portion corresponding to the blood storage portion on the rear surface of the lower leg of the wearer, and the wear Toward the front of the lower leg of the person, orbiting the tubular knitted fabric, and a strong stretchable part having a greater stretch resistance than the mouth rubber part,
A portion of the wearer's lower leg that surrounds the front of the blood reservoir and is a portion that is opposed to the blood-storing portion, and has a weak expansion / contraction portion having a smaller expansion / contraction resistance than the mouth rubber portion,
A thromboprophylaxis lower leg supporter characterized by comprising: The supporter for thromboprophylaxis according to claim 1,
The thrombus-preventing crus supporter, wherein the strong stretchable part is present in a portion corresponding to a penetrating branch that connects the wearer's superficial vein and deep vein. In the supporter for thromboprophylaxis according to claim 1 or 2,
The thrombus-preventing crus supporter, wherein the weakly stretchable part is present in a part corresponding to a bent part of the wearer's ankle joint. In the thrombus prevention leg supporter according to any one of claims 1 to 3,
The thrombus-preventing crus supporter, wherein the strong stretchable part extends to a portion corresponding to the sole of the wearer and circulates around the tubular knitted fabric.

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