KR102677617B1 - Thread for lifting - Google Patents

Abstract

The present invention relates to a lifting thread, comprising: a fixing part that is fixed to skin tissue to increase tensile strength; a rear end extending to one side of the fixing part and having a thickness smaller than that of the fixing part; It is characterized in that it includes a front end extending to the other side of the fixing part.

Description

Lifting thread{Thread for lifting}

The present invention relates to a lifting thread, and specifically, to provide a lifting thread that can increase the duration of pulling and supporting the skin after a thread lifting procedure to remove wrinkles by inserting the lifting thread under the skin and pulling and supporting the skin. will be.

As aging progresses, the subcutaneous fat layer shrinks and moves, wrinkles deepen, collagen and elastin components decrease, skin elasticity decreases, and the fascia layer on the face stretches, causing sagging skin.

The thread lifting procedure restores the elasticity of the stretched fascia layer by inserting a lifting thread into the fascial layer and pulling it to support it. The lifting thread is mainly made of bioabsorbable thread made of ingredients that are absorbed into the body, and in particular, polydye, a surgical material, is used. A representative example is a lifting thread made of polydioxanone (PDO), and it can be manufactured from at least one selected from polylactic acid, polyglycolic acid, polycaprolactone, and copolymers thereof.

Lifting threads are straight without protrusions and threads with protrusions of various shapes are used. Recently, threads with protrusions of various shapes are mainly used.

Threads with various types of protrusions called barbs or cogs can be manufactured through various manufacturing methods such as cutting, knotting, die cutting, pressing, and injection molding.

When the lifting thread is inserted under the skin and pulled through the thread lifting procedure, the lifting thread is fixed to the skin tissue and wrinkles are removed. However, as time passes, the supporting power of the lifting thread is weakened, and the use of thread with protrusions weakens the lifting thread. Thread lifting procedures can increase the duration of wrinkle removal to some extent, but the duration is still not significantly increased.

Registered Patent Publication No. 10-1455683 relates to a two-way barbed suture. In order to be stably fixed to the skin and elastically pull the skin, the hooking branches of the first barb and the hooking branches of the second barb are cut in opposite directions. However, there is a problem in that the duration of wrinkle removal cannot be significantly increased with only the support force of the hanging branch.

Registered Patent Publication No. 10-1581873 relates to a medical suture pressing device. In order to provide a suture pressing device useful in manufacturing medical sutures having barb-shaped projections with orientation and flexibility, the first pressing roller unit, the first pressing roller unit Although the raw suture material is gradually processed to become thinner by the second pressure roller unit and the third pressure roller unit, there is a problem in that the duration of wrinkle removal cannot be significantly increased with only the supporting force of the barb-shaped protrusions.

Registered Patent Publication No. 10-2237586 relates to a skin lifting thread inserter, which uses a single cog thread connected to multiple insertion needles to increase the lifting effect, but uses the first insertion needle to extend the skin lifting thread inserter to about half of the total length. There is a problem that both the thread and the skin can be easily damaged due to friction between the thread and the skin during the process of inserting the thread and inserting the remaining half of the thread using the second insertion needle.

Registered Patent Publication No. 10-1185583 relates to a suture that does not require knotting work, and is provided with a suture support to ensure that it can be held and fixed more firmly at the treatment site without the need for knotting work. There is a problem that the insertion procedure is difficult and the manufacturing cost increases as more suture supports are added.

Registered Patent Publication No. 10-1695339 relates to plastic surgery threads of different thicknesses, including a front end, a lifting part, a conversion part, a fixing part, and a grip part, and the lifting part and the fixing part are integrally injection molded. The length of the lifting part is shorter than the length of the fixing part, and the thickness of the lifting part is thicker than the thickness of the fixing part to ensure rigidity. However, the thickness of the front end portion and the gripping portion is greater than that of the fixing portion. Since the thickness of the portion is the same, there is a problem in that the front end portion and the grip portion are not flexible and cannot be tied.

Registered Patent Publication No. 10-1455683 Registered Patent Publication No. 10-1581873 Registered Patent Publication No. 10-2237586 Registered Patent Publication No. 10-1185583 Registered Patent Publication No. 10-1695339

The purpose of the present invention is to fix the lifting thread to the skin tissue when the lifting thread is inserted and pulled under the skin through a thread lifting procedure, and to significantly increase the duration for which the lifting thread is fixed to the skin tissue by fixing at least one side of the lifting thread. Do this.

Another object of the present invention is to connect a needle to one side of the lifting thread and make the thread thin so that it can be sewn.

Another purpose of the present invention is to make the thickness of one side of the lifting thread thin so that it can be tied.

Another purpose of the present invention is to facilitate the thread lifting procedure by easily and firmly fixing at least one side of the lifting thread.

Another object of the present invention is to reduce the manufacturing cost of the lifting thread by making it possible to easily fix at least one side of the lifting thread.

The problem to be solved by the present invention is not limited to the above object, and other technical problems not explicitly indicated above can be easily understood by those skilled in the art through the structure and operation of the present invention. You will be able to.

The present invention includes the following configuration to solve the above problems.

The present invention relates to a lifting thread, comprising: a fixing part that is fixed to skin tissue to increase tensile strength; a rear end extending to one side of the fixing part and having a thickness smaller than that of the fixing part; It is characterized in that it includes a front end extending to the other side of the fixing part.

The fixing part of the present invention is characterized by forming a plurality of protrusions to further increase the tensile strength of fixing it to skin tissue.

The present invention is characterized in that a needle is connected to the rear end.

The plurality of protrusions formed on the fixing part of the present invention are characterized in that they are formed to be inclined in one direction.

The plurality of protrusions formed on the fixing part of the present invention are characterized in that they are formed to be inclined in a plurality of different directions.

The fixing part of the present invention is disposed inside the cannula, the rear end is disposed to be exposed at the handle, and the front end is formed to be exposed at the opposite side to the handle of the cannula.

The needle connected to the rear end of the present invention is characterized by a small thickness so that it can penetrate the inside of the cannula.

The front end portion of the present invention is characterized in that it has a thickness smaller than the fixed portion.

The front end portion of the present invention is characterized in that it has the same thickness as the fixing portion.

The effect of the present invention is that when the lifting thread is inserted and pulled under the skin by the thread lifting procedure, the lifting thread is fixed to the skin tissue and fixes at least one side of the lifting thread, greatly increasing the duration for which the lifting thread is fixed to the skin tissue. It is what makes it possible.

Another effect of the present invention is to connect a needle to one side of the lifting thread and make it possible to sew by forming a thin thread.

Another effect of the present invention is to make it possible to make the thickness of one side of the lifting thread thin so that it can be tied.

In addition, another effect of the present invention is to make it possible to easily and firmly fix at least one side of the lifting thread, thereby making it possible to perform a thread lifting procedure easily.

Another effect of the present invention is to make it possible to easily fix at least one side of the lifting thread, thereby reducing the manufacturing cost of the lifting thread.

The effects of the present invention are not limited to the above effects, and other effects not explicitly shown above will be easily understood by those skilled in the art through the structure and operation of the present invention.

Figure 1 shows a configuration in which the lifting seal of the present invention is mounted on a cannula and combined with a protective cap.
Figure 2 shows a configuration in which the lifting seal of the present invention is mounted on a cannula and separated from the protective cap.
Figure 3 shows one embodiment of the lifting thread of the present invention.
Figure 4 shows another embodiment of the lifting thread of the present invention.
Figure 5 shows another embodiment of the lifting thread of the present invention.
Figure 6 shows another embodiment of the lifting thread of the present invention.
Figure 7 shows one situation in which the thread lifting procedure of the present invention is performed on the face.
Figure 8 shows another situation in which the thread lifting procedure of the present invention is performed on the face.
Figure 9 shows another situation in which the thread lifting procedure of the present invention is performed on the neck.
Figures 10(a), 10(b), 10(c), 10(d), and 10(e) show various embodiments of protrusions formed on the lifting thread.

Hereinafter, the overall configuration and operation according to a preferred embodiment of the present invention will be described. These examples are illustrative and do not limit the configuration and operation of the present invention, and other configurations and operations that are not explicitly shown in the examples are also provided by ordinary knowledge in the technical field to which the present invention pertains through the examples below. If it can be easily understood by those who have it, it can be seen as the technical idea of the present invention.

Figure 1 shows a configuration in which the lifting seal of the present invention is mounted on a cannula and combined with a protective cap.

Referring to Figure 1, the lifting seal 400 of the present invention is used together with the protective cap 100 and the cannula 200. The protective cap 100 protects the cannula 200 and is made of a transparent material. The status of the cannula 200 and the lifting thread 400 can be checked, and the cannula 200 is generally used for one-time use.

A handle 300 is attached to one end of the cannula 200, and the lifting thread 400 is installed through the inside from the other end of the cannula 200 to the handle 300.

Figure 2 shows a configuration in which the lifting seal of the present invention is mounted on a cannula and separated from the protective cap.

Referring to FIG. 2, the protective cap 100 is separated for the thread lifting procedure, and the cannula 200, which is empty inside, is protected by a lifting thread 400 that penetrates the inside, and the cannula 200 ) A handle 300 is attached to one end.

A portion of the lifting thread 400 is exposed to the handle 300 attached to one end of the cannula 200 and the other end of the cannula 200. A portion of the lifting seal 400 is bent and then inserted into the holding member 500, so that the holding member 500 stably fixes the lifting seal 400 to the cannula 200.

When a user, a doctor, holds the handle 300 in his hand and inserts the cannula 200 into the skin from the other end, a portion of the lifting thread 400 inserted into the holding member 500 is stably supported and the cannula 200 is inserted into the skin from the other end. It can be inserted into the skin together with 200, and the holding member 500 slides in the opposite direction in which the cannula 200 is inserted and is pushed toward the handle 300 of the cannula 200.

Figure 3 shows one embodiment of the lifting thread of the present invention.

Referring to FIG. 3, the lifting thread 400 of the present invention includes a fixing part 410 that is fixed to skin tissue to increase tensile strength when inserted into the skin, and extends to one side of the fixing part 410 to increase the tensile strength of the fixing part 410. ) and a rear end 420 that is smaller in thickness than the front end 430 extending to the other side of the fixing part 410.

The lifting thread 400 of the present invention is a bioabsorbable thread made of components that are absorbed into the body. In particular, it can be made of polydioxanone (PDO), a surgical material, along with polylactic acid, polyglycolic acid, It can be manufactured from a component consisting of at least one selected from polycaprolactone and copolymers thereof. The bioabsorbable thread is absorbed into skin tissue over time, helping to produce collagen and improve skin elasticity.

The thickness (d ₁ ) of the fixing part 410 is preferably about 0.4 to 0.5 mm, and the fixing part 410 may be straight without protrusions or a thread having various types of protrusions. (410) preferably includes a plurality of protrusions 411 so as to be inserted into the skin and strengthen the supporting force fixed to the skin tissue, and the plurality of protrusions 411 may be formed together in various shapes and directions. .

Part or all of the rear end 420 is exposed outside the skin so that the thickness d ₂ is preferably less than 0.2 mm, and more preferably 0.1 mm, so that it can be tied to another lifting thread inserted into the skin adjacent to it.

In the prior art, the thickness of the fixing part 410 and the rear end 420 are the same, and the thickness is about 0.5 mm, so flexibility is inevitably reduced and it is difficult to tie them together, whereas the rear end 420 of the present invention has a thickness of about 0.5 mm. The thickness (d ₂ ) of the fixing part 410 can be made small compared to the thickness (d ₁ ) of the fixing part 410 to provide flexibility, so that the rear end 420 can be tied during the thread lifting procedure.

In particular, the supporting force by which the lifting thread 410 is fixed to the skin tissue is bound to weaken over time. When the rear end 420 is inserted into the skin and tied to the rear end of another adjacent lifting thread, the lifting thread ( 410) can significantly increase the duration of fixation to skin tissue.

In addition, the lifting thread 410 of the present invention is fixed to the skin tissue only by making the thickness (d ₂ ) of the rear end 420 smaller than the thickness (d ₁ ) of the fixing part 410. In that the lifting seal 410 that greatly increases can be manufactured, the manufacturing process of the lifting seal 410 can be simplified and the manufacturing cost can be reduced.

In addition, it is preferable that the length (y ₂ ) of the rear end 420 is formed to be at least 5 cm to facilitate the operation of tying the rear end 420 during the thread lifting procedure, and the fixing part 410 The length (y ₁ ) can be varied, such as 7 cm or 10 cm, depending on the treatment area to which it is applied.

If the front end portion 430 of the present invention is also formed small compared to the thickness (d ₁ ) of the fixing portion 410 to have flexibility, it can be inserted into the skin along with the cannula 200 during the thread lifting procedure. It is inserted so that it comes out of the skin on the other side, so that the front end portion 430 can also be tied.

Part or all of the front end portion 430 is exposed outside the skin so that the thickness d ₂ is preferably less than 0.2 mm, and more preferably 0.1 mm, so that it can be tied to another lifting thread inserted into the skin adjacent to it.

In addition, it is preferable that the length of the front end portion 430 is at least 5 cm to facilitate the operation of tying the front end portion 430 during the thread lifting procedure.

Figure 4 shows another embodiment of the lifting thread of the present invention.

Referring to FIG. 4, the lifting thread 400 of the present invention includes a fixing part 410 that is fixed to skin tissue to increase tensile strength when inserted into the skin, and extends to one side of the fixing part 410 to increase the tensile strength of the fixing part 410. ) includes a rear end 420 whose thickness is smaller than that of the rear end 420, a front end 430 extending to the other side of the fixing part 410, and a needle 600 is connected to the rear end 420.

The needle 600 has an empty hole formed inside it, and the rear end 420 can be inserted into the hole and fixed by compression. In addition, it can also be fixed using a conventional method.

The thickness of the needle 600 should be larger than that of the rear end 420, but should be small enough to pass through the inside of the cannula 200, and it should be easy for the user, the doctor, to bend and use while performing the thread lifting procedure. It is preferable that the thickness of the needle 600 is 0.3 mm, and the length of the needle 600 is preferably 11 mm or more and 15 mm or less.

Figure 5 shows another embodiment of the lifting thread of the present invention.

Referring to FIG. 5, the lifting thread 400 of the present invention includes a fixing part 410 that is fixed to skin tissue to increase tensile strength when inserted into the skin, and extends to one side of the fixing part 410 to increase the tensile strength of the fixing part 410. ) and a rear end 420 that is smaller in thickness than the front end 430 extending to the other side of the fixing part 410.

The lifting thread 400 of the present invention is a bioabsorbable thread made of components that are absorbed into the body. In particular, it can be made of polydioxanone (PDO), a surgical material, along with polylactic acid, polyglycolic acid, It can be manufactured from a component consisting of at least one selected from polycaprolactone and copolymers thereof. The bioabsorbable thread is absorbed into skin tissue over time, helping to produce collagen and improve skin elasticity.

The thickness (d ₁ ) of the fixing part 410 is preferably about 0.4 to 0.5 mm, and the fixing part 410 may be straight without protrusions or a thread having various types of protrusions. (410) preferably includes a plurality of protrusions 411 so as to be inserted into the skin and strengthen the supporting force fixed to the skin tissue, and the plurality of protrusions 411 may be formed together in various shapes and directions. .

Part or all of the rear end 420 is exposed outside the skin so that the thickness d ₂ is preferably less than 0.2 mm, and more preferably 0.1 mm, so that it can be tied to another lifting thread inserted into the skin adjacent to it.

In the prior art, the thickness of the fixing part 410 and the rear end 420 are the same, and the thickness is about 0.5 mm, so flexibility is inevitably reduced and it is difficult to tie them together, whereas the rear end 420 of the present invention has a thickness of about 0.5 mm. The thickness (d ₂ ) of the fixing part 410 can be made small compared to the thickness (d ₁ ) of the fixing part 410 to provide flexibility, so that the rear end 420 can be tied during the thread lifting procedure.

In particular, the supporting force by which the lifting thread 410 is fixed to the skin tissue is bound to weaken over time. When the rear end 420 is inserted into the skin and tied to the rear end of another adjacent lifting thread, the lifting thread ( 410) can significantly increase the duration of fixation to skin tissue.

In addition, the lifting thread 410 of the present invention is fixed to the skin tissue only by making the thickness (d ₂ ) of the rear end 420 smaller than the thickness (d ₁ ) of the fixing part 410. In that the lifting seal 410 that greatly increases can be manufactured, the manufacturing process of the lifting seal 410 can be simplified and the manufacturing cost can be reduced.

In addition, it is preferable that the length (y ₂ ) of the rear end 420 is formed to be at least 5 cm to facilitate the operation of tying the rear end 420 during the thread lifting procedure, and the fixing part 410 The length (y ₁ ) can be varied, such as 7 cm or 10 cm, depending on the treatment area to which it is applied.

Unlike the previous embodiment, the front end portion 430 can be formed to be the same as the thickness (d ₁ ) of the fixing portion 410, and is inserted into the skin together with the cannula 200 during the thread lifting procedure to be inserted from the opposite side. The front end portion 430 is cut so that it comes out of the skin.

Figure 6 shows another embodiment of the lifting thread of the present invention.

Referring to FIG. 6, the lifting thread 400 of the present invention includes a fixing part 410 that is fixed to skin tissue to increase tensile strength when inserted into the skin, and extends to one side of the fixing part 410 to increase the tensile strength of the fixing part 410. ) includes a rear end 420 whose thickness is smaller than that of the rear end 420, a front end 430 extending to the other side of the fixing part 410, and a needle 600 is connected to the rear end 420.

The needle 600 has an empty hole formed inside it, and the rear end 420 can be inserted into the hole and fixed by compression. In addition, it can also be fixed using a conventional method.

The thickness of the needle 600 should be larger than that of the rear end 420, but should be small enough to pass through the inside of the cannula 200, and it should be easy for the user, the doctor, to bend and use while performing the thread lifting procedure. It is preferable that the thickness of the needle 600 is 0.3 mm, and the length of the needle 600 is preferably 11 mm or more and 15 mm or less.

In addition, the front end portion 430 can be formed to be the same as the thickness (d ₁ ) of the fixing portion 410, and is inserted into the skin together with the cannula 200 during the thread lifting procedure to come out of the skin on the other side. The front end portion 430 is cut.

Figure 7 shows one situation in which the thread lifting procedure of the present invention is performed.

Referring to FIG. 7, the cannula 200 is inserted into the skin at the ear area, penetrates into the wrinkle area around the mouth, and the lifting thread 400 is injected, and the cannula 200 exits the ear area. The fixing part 410 of the lifting thread 400 is injected into the skin indicated by a dotted line, the front end 430 is exposed through the wrinkle area around the mouth, and the rear end 420 remains exposed in the ear area. .

The rear end portion 420 is formed to be small and flexible compared to the thickness d ₁ of the fixing portion 410, so that adjacent rear ends 420 can be bound together.

When the needle 600 is connected to the rear end 420, the needle 600 is slightly bent and fixed by sewing to an area such as the periosteum, or inserted into the skin and sewn to the rear end 420 of another adjacent lifting thread. It can also be fixed.

If the front end portion 430 is formed small and flexible compared to the thickness d ₁ of the fixing portion 410, the front end portions 430 adjacent to each other can be bound together.

Part or all of the rear end 420 or the front end 430 is exposed outside the skin and is adjacent to it so that it can be tied with another lifting thread inserted into the skin. It is preferable that the thickness (d ₂ ) is less than 0.2 mm, and 0.1 mm. It is even more desirable.

In addition, it is desirable to make the length at least 5 cm or more to facilitate the operation of tying the rear end 420 or the front end 430 during the thread lifting procedure.

Figure 8 shows another situation in which the thread lifting procedure of the present invention is performed on the face.

Referring to FIG. 8, the front end portion 430 may be formed to be the same as the thickness (d ₁ ) of the fixing portion 410, and in this case, it is difficult to bind the adjacent front end portions 430 together. The front end portion 430 that protrudes out of the skin is cut off.

Figure 9 shows another situation in which the thread lifting procedure of the present invention is performed on the neck.

Referring to FIG. 9, the cannula 200 is inserted into the skin from the area below the ear, penetrates into the wrinkle area of the neck, and the lifting thread 400 is injected, and the cannula 200 exits the skin in the middle of the neck. In this, the fixing part 410 of the lifting thread 400 is injected into the skin indicated by a dotted line, the front end 430 is exposed by penetrating outside the skin in the middle of the neck, and the rear end 420 remains exposed in the ear area. there is.

With two lifting threads (400) from each area below the ears being injected through the wrinkles of the neck, the rear end (420) or the front end (430) of the adjacent lifting threads (400) are tied together to form a lifting thread ( 410) can significantly increase the duration of fixation to skin tissue.

Part or all of the rear end 420 or the front end 430 is exposed outside the skin and is adjacent to it so that it can be tied with another lifting thread inserted into the skin. It is preferable that the thickness (d ₂ ) is less than 0.2 mm, and 0.1 mm. It is even more desirable.

In addition, it is desirable to make the length at least 5 cm or more to facilitate the operation of tying the rear end 420 or the front end 430 during the thread lifting procedure.

Figures 10(a), 10(b), 10(c), 10(d), and 10(e) show various embodiments of protrusions formed on the lifting thread.

Referring to FIG. 10(a), the fixing portion 410 of one lifting thread generally includes a portion where protrusions 411 are formed in one direction and a portion where protrusions 411 are formed in a different direction. This allows it to be fixed to the skin tissue. However, there is a limit to increasing the duration for which the lifting thread is fixed to the skin tissue using only the protrusion 411.

Referring to FIG. 10(b), the fixing portion 410 of one lifting thread can be fixed to the skin tissue by including only the portion where the protrusion 411 is formed in one direction. In this case, the lifting thread is fixed to the skin tissue. It is preferable that the length of the top 410 is 7 cm.

The rear end 420 of the lifting thread or part or all of the front end 430 is exposed outside the skin so that it can be easily and firmly fixed by tying it with another lifting thread inserted into the skin adjacent to it. As a result, the lifting thread is It can significantly increase the duration of fixation to skin tissue.

Referring to FIG. 10(c), when the length of the fixing part 410 of one lifting thread is 10 cm, a protrusion is formed in only one direction for a length of about 8 cm (d ₁ ), and the remaining length is about 2 cm. (d ₂ ) can cause protrusions to be formed in the opposite direction.

Even in this case, the rear end 420 of the lifting thread or part or all of the front end 430 is exposed outside the skin and can be easily and firmly fixed by tying it with another lifting thread inserted into the skin adjacent to it, and thus. It can significantly increase the duration that the lifting thread is fixed to the skin tissue.

Referring to FIG. 10(d), the vertical cross-section of the lifting thread is enlarged in the longitudinal direction, and protrusions 411 are formed on the fixing part 410 of the lifting thread in three directions on the vertical cross-section. The supporting force with which the lifting thread is fixed to the skin tissue can be further increased.

Referring to FIG. 10(e), the protrusions formed on the lifting thread may be formed in various shapes such as irregularities, and the fixing portion 410 and the protrusions of the lifting thread may vary depending on the thread lifting treatment area and the fixing force or tensile strength required for this. (411) may also use protrusions having a concavo-convex shape formed in a zigzag pattern.

100: protective cap
200: cannula
300: handle
400: lifting thread
410: fixing part
411: protrusion
420: rear end
430: front end
500: Holding member
600: Needle

Claims (9)

In the lifting thread that can tie one side,
A fixing part that is fixed to the skin tissue to increase tensile strength;
a rear end extending to one side of the fixing part and having a thickness smaller than that of the fixing part;
It includes a front end extending to the other side of the fixing part,
The thickness (d1) of the fixing part is 0.4 to 0.5 mm, and the thickness (d2) of the rear end is less than 0.2 mm,
A lifting thread capable of tying one side, which is manufactured from at least one component selected from polydioxanone, polylactic acid, polyglycolic acid, polycaprolactone, and copolymers thereof.
According to claim 1,
A lifting thread capable of tying one side, characterized in that a plurality of protrusions are formed on the fixing part to increase the tensile strength of being fixed to skin tissue.
According to claim 1,
A lifting thread capable of tying one side, characterized in that a needle is connected to the rear end.
According to claim 2,
A lifting thread capable of tying one side, characterized in that the plurality of protrusions formed on the fixing part are formed to be inclined in one direction.
According to claim 2,
A lifting thread capable of binding one side, characterized in that the plurality of protrusions formed on the fixing part are inclined in a plurality of different directions.
According to claim 1,
The fixing part is disposed inside the cannula,
The rear end is arranged to be exposed at the handle portion,
A lifting thread capable of tying one side, characterized in that the front end is formed to be exposed at a portion opposite to the handle of the cannula.
According to claim 6,
A lifting thread capable of tying one side, characterized in that the needle connected to the rear end is small in thickness so as to penetrate the inside of the cannula.
According to claim 1,
A lifting thread capable of tying one side, wherein the front end portion has a thickness smaller than that of the fixing portion.
According to claim 1,
A lifting thread capable of tying one side, wherein the front end portion has the same thickness as the fixing portion.