KR102421901B1 - Yarn for lifting a skin - Google Patents

Abstract

The lifting thread includes a core thread, at least one first anchor part fixed on the periphery of the core thread, fixed to the skin layer during skin treatment, and a second anchor part connected to the periphery of the core thread to be movable along the core thread. do. In addition, a plurality of the first anchor parts may be provided to be spaced apart from each other, and the second anchor part may be movably disposed between the first anchor parts. Accordingly, since the number of the second anchor parts per unit length of the core thread can be variably applied, it is possible to more precisely control the tensile force applied to the skin by the lifting thread. Therefore, facial lifting can be tailored to the skin conditions of various patients.

Description

Lifting thread {YARN FOR LIFTING A SKIN}

The present invention relates to a lifting thread, and more particularly, to a lifting thread fixed to a skin layer to suppress fine wrinkles on the skin.

Recently, in line with the growing interest in beauty, various surgical methods for removing wrinkles on the face or neck have appeared.

Wrinkle removal procedures include facial lift, filler insertion, botulinum toxin injection, or laser skin regeneration. A lifting method has been developed and used.

Facial lifting is a procedure in which a thread with small protrusions like a rose thorn is inserted into the skin and then wrinkles are pulled out. The thread used for face lifting is generally a medical thread that is harmless to the human body. Facial lifting involves implanting such a thread under the skin, pulling the soft tissue evenly, pulling sagging skin and tightening the skin that has lost its elasticity. Facial lifting improves wrinkles, sagging skin, and sagging cheeks, as well as removing wrinkles such as forehead wrinkles and nasolabial folds.

In particular, facial lifting is a simple local anesthetic that does not put a strain on the body and is performed using only special threads and needles, so it can reduce the burden on the patient and expect immediate facial lifting, wrinkle removal, and jawline improvement effects.

Accordingly, in recent years, a lifting thread used for procedures such as face lifting has been developed.

The conventional lifting thread includes a core thread forming the center of the lifting thread, and a plurality of anchors protruding from the periphery of the core thread and fixed to the skin and spaced apart from each other at regular intervals.

Such a conventional lifting thread has a problem in that the anchor part and the core thread are integrally formed or the anchor part is fixed to the core thread, so that the standardized lifting thread is uniformly applied to the patients regardless of the skin conditions of various patients. In addition, since the anchor part is fixed to the core thread, there is a difficulty in that the tensile force cannot be applied differently depending on the degree of elasticity of each fibrous tissue area within the skin area to be treated. In addition, when manufacturing a lifting seal tailored to a specific patient, there is a problem that the manufacturing cost is high.

Embodiments of the present invention provide a lifting thread that can be variably applied to various skin conditions.

The lifting thread according to embodiments of the present invention is fixed on the periphery of the core thread, the core thread, and at least one first anchor part fixed to the skin layer during skin treatment and the core thread to be movable along the core thread. and a second anchor portion connected to the periphery.

In one embodiment of the present invention, the first anchor portion is provided with a plurality of spaced apart from each other, the second anchor portion may be arranged movably between the first anchor portion.

In one embodiment of the present invention, at least one of the first anchor portion and the second anchor portion may have a cone shape.

In one embodiment of the present invention, the first anchor portion and the second anchor portion may be made of different materials.

In one embodiment of the present invention, the first anchor portion and the second anchor portion may be made of different colors.

The lifting thread according to the embodiments of the present invention as described above is fixed on the periphery of the core thread, the core thread, and at least one first anchor part fixed to the skin layer during skin treatment and movable along the core thread. and a second anchor portion connected to the periphery of the core seal.

In addition, a plurality of the first anchor parts may be provided to be spaced apart from each other, and the second anchor part may be movably disposed between the first anchor parts.

Accordingly, since the number of the second anchor parts per unit length of the core thread can be variably applied, it is possible to more precisely control the tensile force applied to the skin by the lifting thread. Therefore, facial lifting can be tailored to the skin conditions of various patients.

1 is a cross-sectional view for explaining a lifting seal according to an embodiment of the present invention.
FIG. 2 is an enlarged front view of a portion of the lifting seal shown in FIG. 1 ;
3 to 6 are cross-sectional views for explaining a manufacturing method for a lifting seal according to an embodiment of the present invention.
7 is a perspective view for explaining a lifting seal according to embodiments of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention should not be construed as being limited to the embodiments described below and may be embodied in various other forms. The following examples are provided to fully convey the scope of the present invention to those skilled in the art, rather than being provided so that the present invention can be fully completed.

In embodiments of the present invention, when one element is described as being disposed or connected to another element, the element may be directly disposed or connected to the other element, and other elements are interposed therebetween. it might be Alternatively, when one element is described as being directly disposed on or connected to another element, there cannot be another element between them. Although the terms first, second, third, etc. may be used to describe various items such as various elements, compositions, regions, layers and/or portions, the items are not limited by these terms. will not

The terminology used in the embodiments of the present invention is only used for the purpose of describing specific embodiments, and is not intended to limit the present invention. In addition, unless otherwise limited, all terms including technical and scientific terms have the same meaning as understood by one of ordinary skill in the art of the present invention. The above terms, such as those defined in ordinary dictionaries, shall be interpreted as having meanings consistent with their meanings in the context of the relevant art and description of the present invention, and unless clearly defined, ideally or excessively outwardly intuitively. will not be interpreted.

Embodiments of the present invention are described with reference to schematic diagrams of ideal embodiments of the present invention. Accordingly, variations from the shapes of the diagrams, eg, variations in manufacturing methods and/or tolerances, are those that can be fully expected. Accordingly, the embodiments of the present invention are not to be described as being limited to the specific shapes of the areas described as diagrams, but rather to include deviations in the shapes, and the elements described in the drawings are entirely schematic and their shapes It is not intended to describe the precise shape of the elements, nor is it intended to limit the scope of the invention.

1 is a cross-sectional view for explaining a lifting seal 100 according to an embodiment of the present invention. FIG. 2 is an enlarged front view of a portion of the lifting seal 100 shown in FIG. 1 .

1 and 2 , the lifting seal 100 according to an embodiment of the present invention includes a core seal 10 and an anchor unit 20 .

The core yarn 10 forms the center of the lifting yarn 100 . In general, the core seal 10 may be inserted into the skin layer through a cannula (not shown). At this time, as the core thread 10 is tensioned, the anchor part 20 configured around the core thread 10 and fixed to the soft tissue of the skin layer can remove wrinkles by pulling the skin tissue.

The anchor portion 20 is formed on the periphery of the core seal 10 . As shown in FIG. 1 , the anchor units 20 may be arranged symmetrically with respect to the center of the core seal 10 . In addition, the anchor unit 20 may serve as an anchoring agent for fixing to the skin layer during skin treatment. Specifically, when the lifting thread 100 is inserted into the skin layer, the anchor unit 20 is inserted and fixed in the soft tissue of the skin layer. Thus, as the lifting thread 100 is pulled, the anchor part 20 fixed in the skin tissue pulls the skin tissue to effectively remove wrinkles formed in the skin.

In addition, the core yarn 10 and the anchor part 20 may be made of a biodegradable polymer material that is hydrolyzed and disappears in the skin layer. For example, the core seal 10 and the anchor part 20 may include at least one selected from poly lactic acid (PLA), polydioxanone (PDO), polyglycolic acid (PGA), and polycaprolactone (PCL). In addition, the core seal 10 may be configured by stacking at least two or more layers, and in this case, the layers may be made of different polymer materials.

The anchor part 20 includes a first anchor part 21 and a second anchor part 23 .

The first anchor part 21 is fixed on the circumference of the core thread 10 and is fixed to the soft tissue of the skin layer during skin treatment. In addition, the first anchor part 21 may be provided in plurality, and may be disposed along the longitudinal direction of the core seal 10 at preset intervals. In this state, when the lifting thread 100 is inserted into the skin layer, the first anchor portion 21 may be inserted onto the skin layer while maintaining a preset interval. Accordingly, the first anchor unit 21 can uniformly pull the soft tissue of the skin layer, pull the sagging skin, and tighten the skin that has lost elasticity.

The second anchor portion 23 is configured to be movable along the core yarn 10 on the circumference of the core yarn 10 . To this end, for example, a separation space 25 may be formed between the second anchor part 23 and the core seal 10 . That is, by being spaced apart from the second anchor part 23 along the circumference of the core seal 10 , the second anchor part 23 may be configured to be movable on the core seal 10 .

The second anchor part 23 is configured to be movable along the longitudinal direction of the core seal 10 as necessary, and may have a variable density on the core seal 10 . That is, the number of the second anchors 23 per unit length of the core thread 10 may be adjusted according to the degree of elasticity of each fibrous tissue region within the skin area where the lifting thread 100 is treated.

For example, in the core thread 10 inserted into a region of low elasticity of the fibrous tissue, the number of the second anchor parts 23 is plural, so that the tensile force applied to the fibrous tissue may be increased. . In addition, by the plurality of second anchors 23 fixed to the fibrous tissue tensioning the fibrous tissue, the tensile force acting on the fibrous tissue can be more uniformly distributed.

On the other hand, in the core yarn 10 inserted into a portion of the fibrous tissue having high elasticity, the number of the second anchor parts 23 is small, so that the tensile force applied to the fibrous tissue can be reduced.

On the other hand, in one embodiment of the present invention, the first anchor portion 21 is provided in plurality and spaced apart from each other, and the second anchor portion 23 is movable between the first anchor portions 21 . can be placed. That is, the movable range of the second anchor part 23 may be defined by the first anchor parts 21 spaced apart from each other. In this case, the first anchor parts 21 may serve as a kind of stopper of the second anchor part 23 .

In one embodiment of the present invention, at least one of the first anchor portion 21 and the second anchor portion 23 may have a cone shape. Accordingly, the anchor part 20 is firmly fixed in the skin tissue, so that wrinkles formed in the skin can be effectively removed. Furthermore, the contact area between the anchor part 20 and the skin is increased so that the anchor part 20 can be naturally destroyed in the skin by hydrolysis.

In one embodiment of the present invention, the first anchor portion 21 and the second anchor portion 23 may be made of different materials. That is, as the core yarn 10 and the anchor portion 20 are made of different materials, the core yarn 10 and the anchor portion 20 may have different elongations. Accordingly, when the lifting thread 100 including the core thread 10 and the anchor part 20 is transplanted into the skin, damage to the skin due to the tension applied to the lifting thread 100 can be suppressed. .

Specifically, the core yarn 10 and the anchor part 20 may be made of different polymer materials having an elongation difference ratio of less than 10%. Furthermore, the core seal 10 may be made of a material having a higher elongation than the anchor part 20 . For example, when the core seal 10 is polydioxanone (PDO), the anchor unit 20 may include at least one of poly lactic acid (PLA), polyglycolic acid (PGA), and polycaprolactone (PCL).

Therefore, when the lifting thread 100 including the core thread 10 and the anchor part 20 is implanted into the skin, the core thread 10 effectively absorbs the tension applied to the lifting thread 100 . can do. Accordingly, damage to the anchor unit 20 due to the tension can be suppressed.

In one embodiment of the present invention, the first anchor portion 21 and the second anchor portion 23 may be made of different colors. For example, the anchor part 20 may further include a pigment having a specific color, so that the anchor part 20 may exhibit a unique color different from that of the core yarn 10 . Accordingly, when the anchor portion 20 is implanted in the skin, the anchor portion 20, which is relatively visible, can be naturally assimilated into the skin externally.

7 is a perspective view for explaining the lifting seal 100 according to an embodiment of the present invention.

As shown in FIG. 7 , the anchor unit 20 may be disposed symmetrically with respect to the center point of the lifting thread 100 . At this time, in order to prevent the anchor part 20 from being disposed in the center of the lifting thread 100 , the first anchor part 21 is disposed as the first anchor part close to the center of the lifting thread 100 . can be Thus, it is possible to prevent the second anchor portion 23 from moving to the central portion of the lifting seal 100 .

3 to 6 are cross-sectional views for explaining a manufacturing method for the lifting seal 100 according to an embodiment of the present invention.

Referring to FIG. 3 , a pair of first and second molds 200 and 300 that face each other and define a plurality of cavities that can be opened and closed are prepared. The first and second molds 200 and 300 are provided to inject molten resin into the cavity through the gate 230 . To this end, a heat source controller (not shown) capable of controlling the temperature of the molten resin may be mounted in the first mold 200 or the second mold 300 . By controlling the temperature of the molten resin, the heat source control unit not only allows the molten resin to flow smoothly, but also cools the molten resin to form anchor parts in the cavities.

For example, a runner 210 providing a flow path through which the molten resin can flow is provided inside the first mold 200 . A gate 230 through which the molten resin can be discharged is provided at an end of the runner 210 . When the molten resin discharged from the gate 230 is solidified, a first recess portion 250 defining a shape of the anchor portion 20 constituting the lifting seal 100 is formed. The first recess part 250 communicates with the gate 230 . In this case, the first recess part 250 defines the shape of the anchor part 20 .

Meanwhile, a second recessed portion 350 corresponding to the first recessed portion 250 is formed inside the second mold 300 . The first recess part 250 and the second recess part 250 may be defined as cavities forming the shape of the anchor part 20 .

When a plurality of anchor portions 20 are formed around the core seal, a plurality of first recess portions 250 are also formed on the upper surface of the first mold 200 . Furthermore, a plurality of the gates 230 communicating with the first recess portion 250 are also formed. Accordingly, the number of cavities defined by each of the first recessed parts 250 and the second recessed parts 350 corresponding to each other is the same as the number of the anchor parts 20 . As a result, the cavities do not communicate with each other, so that each of the anchor parts 20 respectively formed inside the cavities can be individualized.

Referring to FIG. 4 , a core seal 10 in which a plurality of anchor part forming regions corresponding to each of the cavities is defined is supplied between the first and second molds 200 and 300 .

In more detail, after fixing one end of the core yarn 10 wound around the supply roller 410 to the tension roller 420 , the core yarn 10 is spaced apart between the supply roller 410 and the tension roller 420 . is stretched to a certain strength,

Next, the core seal 10 in which the plurality of anchor part formation regions are defined is supplied between the first mold 200 and the second mold 300 . In this case, the core seal 10 is positioned adjacent to the second mold 300 facing the first mold 200 in which the first recess part 250 is formed.

Referring to FIG. 5 , the first mold 200 and the second mold 300 may be mutually clamped to seal cavities defined by the first recess part 250 and the second recess part 350 . . In this case, the cavities are isolated from each other, so that movement of the molten resin between the cavities can be suppressed. Accordingly, the anchor portions 20 respectively formed in the cavities can be individualized without being interconnected. As a result, when the lifting thread 100 including the anchor units 20 is implanted inside the skin, the tension applied to each of the anchor units 20 can be suppressed from being transmitted to other adjacent anchor units.

Then, the molten resin is supplied and solidified to each of the cavities corresponding to the anchor portion forming regions through the runner 210 and the gate 230 .

Referring to FIG. 6 , the first and second molds 200 and 300 are spaced apart to open the cavity. That is, as one of the first and second molds 200 and 300 moves away from the other, they may be spaced apart from each other.

After the cavity formed by the first and second recesses 250 and 350 is opened, the molded article is formed using an ejecting pin (not shown) or a stripper plate (not shown) in the second mold (300). and the molded article is separated from the first mold 200 and the second mold 300 .

Then, the core yarn 10 on which the anchor part 20 is formed is cut to a unit length. To this end, the cutter 430 may cut a unit length while the tension roller 420 is spaced apart from the cavity.

Meanwhile, when the anchor portion 20 is formed in each of the anchor portion formation regions of the core yarn 10 , the anchor portion formation region of the core yarn 10 may be re-melted. That is, when the molten resin is supplied into the cavity, the surface of the core seal 10 may be partially melted. Accordingly, the anchor part 20 may be integrally and firmly formed on the surface of the core seal 10 while the core seal 10 and the molten resin are solidified together.

To this end, the core yarn 10 and the anchor unit 20 may use different polymer materials having a melting point difference within 10°C. For example, when the core seal 10 is polydioxanone (PDO), the molten resin may include at least one of poly lactic acid (PLA), polyglycolic acid (PGA), and polycaprolactone (PCL).

Although the above has been described with reference to preferred embodiments of the present invention, those skilled in the art can variously modify and change the present invention within the scope without departing from the spirit and scope of the present invention as set forth in the following claims. You will understand that there is

10: core thread 20: anchor part
21: first anchor part 23: second anchor part
25: separation space 100: lifting thread
200: first mold 210: runner
230: gate 250: first recess
300: second mold 350: second recess
410: supply roller 420: tension roller

Claims (5)

core thread;
at least one first anchor part fixed on the periphery of the core seal and fixed to the skin layer during skin treatment; and
and a second anchor part connected to the periphery in a state spaced apart from the periphery of the core seal so as to be movable along the core seal,
The first anchor portion is provided in a plurality of spaced apart from each other along the core seal, the lifting seal, characterized in that the second anchor portion is arranged to be movable between the first anchor portion. delete The lifting seal according to claim 1, wherein at least one of the first anchor part and the second anchor part has a cone shape. The lifting seal according to claim 1, wherein the first anchor part and the second anchor part are made of different materials. The lifting thread according to claim 1, wherein the first anchor part and the second anchor part are made of different colors.

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