KR20230010131A - Suture for lifting including molding part at the terminal part, suture kit using the same and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a lifting suture (10) having a molded part (150) at a distal end so that knotting the suture (10) is unnecessary in a skin lifting procedure, a suture kit in which the lifting suture (10) having the molded part (150) at the distal end is inserted into a hollow part (230) of a cannula (200), and a method for manufacturing the same.

Description

Lifting suture having a molding part at the end, a suture kit using the same, and a manufacturing method thereof { Suture for lifting including molding part at the terminal part, suture kit using the same and manufacturing method thereof }

The present invention relates to a lifting suture having a molded part at its distal end so that the suture knotting operation is unnecessary in a surgical procedure, a suture kit in which the lifting suture having a molded part at the distal end is inserted into a hollow part of a cannula, and a manufacturing method thereof.

Lifting refers to lifting the wrinkles of aged skin and keeping them taut, and in particular, it refers to managing fine wrinkles, which are signs of skin aging, and sagging skin that loses elasticity.

In addition, a lifting suture (縫合絲, suture) is a thread used during a lifting procedure, and is divided into an absorbable suture that is absorbed in the body after lifting and a non-absorbable suture that is not absorbed and must be removed.

Sutures using cutgut, polyglycolic acid, etc. have been developed as the absorbable suture, and non-absorbable sutures include silk, nylon, polyterephthalethylene, and the like. In particular, absorbable sutures have been developed to be decomposed by the human body, so there is no need to remove sutures after the procedure.

Since the lifting suture as described above is knotted before and after the procedure, excessive folding and bending are applied to the existing suture, and the strength of the knot is significantly lowered, resulting in a risk of losing its function. It is larger than a barb and is hard, so there is a disadvantage in that it can cause severe pain to the patient through tissue and nerve damage when inserted into the subcutaneous tissue.

That is, after the suture lifting procedure, the suture is generally made at the beginning and end of the suture so that the suture does not come loose, and if necessary, a knot is also made in the middle of the suture. Since it is very important to finish suturing as quickly as possible by shortening the procedure time, suturing and knotting techniques are essential for safe and efficient surgery.

Conventionally, in order to tie a knot in a suture during suture work, a knotting device for grabbing, fixing, or turning the suture was used. However, since a large space is required to use the knotting device, it is necessary to shorten the suture time within a narrow space as much as possible. Considerable skill is required for this. Accordingly, various suture instruments such as a Cambridgeendo or Radius surgical system have been developed for easily, quickly, and firmly tying a suture knot in a narrow space.

As a prior art for such a lifting suture, Korean Patent Laid-open Publication No. 10-2018-0101312 (September 12, 2018) has a fixed part that can be fixed to the skin on one side and a variable part that can be moved and fixed on the other side. It is formed symmetrically, and the fixing part and the variable part integrally form the anchor part protruding from the outer circumferential surface of the fiber yarn by mutual double injection, and the anchor part of the fixing part and the variable part are formed at regular intervals so that the fiber yarn is exposed to the outside. A lifting suture is disclosed, and in Korean Patent Registration No. 10-1701434 (February 13, 2017), a plurality of conical projections or funnel-shaped projections are made of a polymer material formed on the outer circumferential surface of the main suture head. A suture for face and body lifting, wherein the protrusions are conical, polygonal cone, truncated cone, modified polygonal pyramid, polygonal pyramid, modified polygonal pyramid, cylindrical shape, deformed polygonal pyramid, multi-truncated polygonal pyramid, multi-truncated polygonal pyramid, and multi-truncated polygonal pyramid formed in a radially symmetrical structure centered on the suture main body. A suture for lifting the face and body is disclosed, characterized in that it has a three-dimensional structure of a prismatic shape or a modified polygonal column shape or a funnel shape in which part or all of the space excluding the outer circumferential surface of the three-dimensional structure and the internal suture headquarters is empty. .

However, in the lifting suture according to the prior art, a knotting device was used to grab, fix, or turn the suture thread in order to tie a knot during the procedure. In order to shorten the sealing time as much as possible, considerable skill is required.

One of the important points to be considered in procedures using sutures is the need to firmly maintain and fix the sutures at the site of operation in order to ensure stable and long-lasting effects of suturing, tissue adhesion or support, and fixation. It is necessary to make a solid knot so that the suture does not come loose, and it is necessary to reduce the time and effort required for the knotting process to a minimum for a quick and safe procedure.

The present invention is a suture kit in which a lifting suture 10 having a molded part at the distal end and a lifting suture 10 having a molded part at the distal end are inserted into the hollow part of the cannula so that the suture 10 does not need to be knotted during a lifting procedure. And its purpose is to provide a manufacturing method. However, the technical problem to be achieved by the present invention is not limited to the above-mentioned problem, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

A method of manufacturing a suture 10 for skin lifting procedure having a molding portion 150 at an end according to the present invention includes a first step of preparing the suture 10; A second step of introducing the distal end of the suture thread 10 into the upper mold 30 and the lower mold 35 of the molding device 100; a third step of heating the upper mold 30 and the lower mold 35 to form the suture thread 10 drawn into the upper mold 30 and the lower mold 35; a fourth step of forming the distal end of the suture thread 10 by pressing the heated upper mold 30 and lower mold 35; and a fifth step of cooling the suture 10 formed at the distal end,

In the third step, the temperature range of the upper mold 30 and the lower mold 35 for forming the suture 10 ranges from the melting temperature of the suture 10 to a temperature range 30 ° C lower than the melting temperature, and the fourth When pressurized in the step, the pressure range is preferably 80 to 160 kgf/cm 2 .

In addition, the shape of the upper mold 30 and the lower mold 35 is preferably any one of a triangle, a square, a star, or a circle, and the material of the suture 10 is polyethylene terephthalate (polyenthylene terephthalate), polyamide (polyamide), polyvinylidene fluoride, and polypropylene, polydioxanone, polylactic acid, polycaprolactone, polyhydroxybutyrate ) and polyglycolic acid, and a step of forming barbs 70 on the surface of the lifting suture 10 may be further included.

In addition, the lifting suture 10 having the molding part 150 at the end manufactured by the manufacturing method of the lifting suture 10 having the molding part 150 at the end has a hollow part 230 in the longitudinal direction therein. By being inserted into the hollow part 230 of the cannula 200 having the formed guide rod 250 and the hub 210, a suture kit used for the procedure can be manufactured.

According to the lifting suture 10 having the molded part 150 at the distal end of the present invention, the skin lifting procedure can be performed safely without tying a knot, and the suture 10 can be firmly maintained and fixed at the treatment site. . Accordingly, it has an effect of effectively lifting skin tissue. In addition, the suture kit in which the lifting suture 10 provided in the present invention is fastened to the hollow part 230 of the cannula 200 can achieve excellent surgical effects regardless of the operator's skill level.

1 is a schematic diagram of an apparatus 100 for forming a suture 10 according to the present invention,
2 is a perspective view of a cannula 200 according to the present invention;
3 is a cross-sectional view of the suture kit in which the suture 10 is inserted into the cannula 200.

In this application, terms such as "comprise", "have" or "have" are intended to indicate that there is a feature, number, step, component, part, or combination thereof described in the specification, but one or more other It should be understood that it does not preclude the possibility of addition or existence of features, numbers, steps, operations, components, parts, or combinations thereof.

In addition, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in this application, it should not be interpreted in an ideal or excessively formal meaning. don't

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in more detail. In order to facilitate overall understanding in the description of the present invention, the same reference numerals are used for the same components in the drawings, and redundant descriptions of the same components are omitted.

The present invention relates to a lifting suture (10) that can be inserted into the skin to lift the skin to improve or remove skin wrinkles, and has a molding portion (150) at its end.

The present invention relates to a lifting suture (10) for lifting the skin or expanding the volume of skin tissue, which is inserted into the skin layer to lift the skin to remove wrinkles or to expand the volume of skin tissue to improve elasticity and volume. It relates to a lifting suture (10) that enhances feeling.

In the present specification, “lifting” means pulling or lifting the skin by the suture 10, and such lifting may be performed by barbs 70 included in the suture 10 or the like. The lifting suture 10 according to the present invention may exhibit an effect of physically improving or removing wrinkles on the skin surface by lifting. Specifically, in one aspect of the present invention, the suture 10 is inserted into the epidermis, dermis, or subcutaneous fat layer in sagging or wrinkled skin, and the barbs 70 provided in the suture 10 lift the sagging skin layer. can smooth out wrinkles

Hereinafter, a lifting suture 10 having a molded part 150 at the distal end according to the present invention, a cannula 200 to which the lifting suture 10 is fastened, and a manufacturing method thereof will be described in detail with reference to the accompanying drawings. attached to the present invention. 1 is a schematic view of an apparatus 100 for forming a suture 10 according to the present invention, FIG. 2 is a perspective view of a cannula 200 according to the present invention, and FIG. 3 is a suture 10 inserted into the cannula 200. A cross-sectional view of the suture kit.

The manufacturing method of the lifting suture 10 having the molding part 150 at the distal end according to the present invention includes a first step of preparing the suture 10; A second step of introducing the distal end of the suture thread 10 into the upper mold 30 and the lower mold 35 of the molding device 100; a third step of heating the upper mold 30 and the lower mold 35 to form the suture thread 10 drawn into the upper mold 30 and the lower mold 35; a fourth step of forming the distal end of the suture thread 10 by pressing the heated upper mold 30 and lower mold 35; and a fifth step of cooling the suture 10 formed at the distal end.

Looking at this in detail, the suture 10 prepared in the first step can be applied with a suture 10 that is commonly used. That is, there are several types of the suture 10, and various effects can be obtained depending on the type of the suture 10.

That is, the suture 10 used in the lifting procedure remains undecomposed even after the suture 10, which is naturally degraded and absorbed into the body after a certain period of time after the procedure, is bonded to the treated tissue according to its absorbability in the body, It can be divided into non-absorbable sutures 10 that must be removed by revision surgery.

The suture 10 according to the present invention may be manufactured using a thermoplastic resin as an absorbable suture 10 or a non-absorbable suture 10 .

Even if the thermoplastic resin is a resin that is melted and solidified when heat is applied, it is melted when heated again and has a characteristic that it can be reused. In particular, since the thermoplastic resin can be heated and molded at a temperature higher than the glass transition temperature, it is possible to form a shape.

That is, a thermoplastic resin is generally a resin that melts and has fluidity when heat or pressure is applied, and has a feature that can be given shape by injecting into a mold having a desired shape and cooling by using the fluidity when melted.

According to the present invention, the suture 10 is polyethylene terephthalate (polyenthylene terephthalate, PET), polyamide (polyamide), polyvinylidene fluoride (polyvinylidene fluoride, PVDF), polypropylene (polypropylene, PP), polydi It is preferably one selected from the group consisting of polydioxanone, polylactic acid, polycaprolactone, polyhydroxybutyrate and polyglycolic acid.

melting point glass transition temperature melting point glass transition temperature PET 260℃ 67~81 ℃ PLA 130℃ 60~65℃ polyamide 212℃ 70 ℃ PCL 60 ℃ -60 ℃ PVDF 177℃ -35 ℃ PHB 180℃ -68 ℃ PP 160℃ -10 ℃ PGA 224℃ 34~40 ℃ Polydioxanone 110℃ -10 to 0℃

As shown in Table 1, since PET has a melting point of 260 °C and a glass transition temperature of 67 to 81 °C, the PET can be molded at a temperature equal to or higher than the glass transition temperature. Similarly, since all of the resins for producing sutures shown in Table 1 are thermoplastic resins, when heated to a temperature higher than the glass transition temperature, they are injected into a mold having a shape, pressurized, and then cooled to give a shape.

In addition, according to the present invention, the suture 10 is preferably manufactured by plying a plurality of monofilament yarns, the total thickness of the suture 10 is 50 to 500 denier, and 2 to 24 monofilament strands are plied. It is preferable to be prepared. In particular, when plying the monofilaments, additional twist may be imparted.

That is, the suture 10 according to the present invention may be manufactured using any one of the above resins.

After the suture 10 is prepared as described above, a second step of introducing the distal end of the suture 10 into the upper mold 30 and the lower mold 35 of the molding apparatus 100; and, the upper mold a third step of heating the upper mold 30 and the lower mold 35 to form the suture thread 10 drawn into the inside of the mold 30 and the lower mold 35; and a fourth step of forming the distal end of the suture thread 10 by pressing the heated upper mold 30 and lower mold 35.

The second to fourth steps according to the present invention can be performed using the molding apparatus 100 as shown in FIG.

That is, referring to FIG. 1 , the molding apparatus 100 includes an upper mold 30 and a lower mold 35 for forming a suture thread 10 by heating and pressurizing it, and the upper mold 30 and the lower mold 35 It may be composed of an upper heater 20 and a lower heater 25 for heating, respectively.

The suture 10 is supplied to the molding device 100 and seated inside the upper mold 30 and the lower mold 35, and then heated and pressurized to have a molded part 150 at the distal end according to the present invention. It may be made of a lifting suture (10).

As described above, the suture 10 drawn into the upper mold 30 and the lower mold 35 is heated and pressurized, thereby forming the suture 10 . As described above, the processability of the suture thread 10 drawn into the upper mold 30 and the lower mold 35 is improved by heating, but it is preferable to heat it within a temperature range that does not deform the polymer material or damage the polymer crystallinity. .

According to the present invention, hot wires may be embedded in the upper heater 20 and the lower heater 25, and a temperature sensor (not shown) and a temperature controller (not shown) for controlling the temperature of the hot wires may be included.

According to the present invention, the suture 10 is heated to a glass transition temperature (Tg) or higher and a melting point (Tm) or lower by the upper heater 20 and the lower heater 25 connected to the upper mold 30 and the lower mold 35. can be heated to a temperature of

The heated suture 10 as described above may be molded by being pressed by the upper mold 30 and the lower mold 35 thereafter. Accordingly, the suture 10 may be manufactured as a suture 10 whose distal end is molded into a desired shape by the upper mold 30 and the lower mold 35 .

Applied in the third step, that is, the step of heating the upper mold 30 and the lower mold 35 to form the suture thread 10 drawn into the upper mold 30 and the lower mold 35 The temperature is lower than the melting point of the suture 10 and a specific temperature higher than the glass transition temperature, and preferably heated in a temperature range from the melting point of the suture 10 to 30 ° C lower than the melting point.

As described above, by controlling the heating temperature in the above range in the third step, it is possible to solve problems such as twisting of the suture 10 that may occur during molding, thereby making it possible to manufacture a suture 10 of excellent quality. It is possible and provides the effect of improving the efficiency and stability of molding work.

In addition, in the fourth step, that is, in the step of forming the distal end of the suture thread 10 by pressing the heated upper mold 30 and lower mold 35, the pressure applied to the upper mold 30 and the lower mold 35 The size of is preferably 80 to 160 kgf / cm 2 .

In the fourth step, when the magnitude of the pressure applied to the upper mold 30 and the lower mold 35 is less than 80 kgf / cm2, the burr formed on the upper mold 30 and the lower mold 35 If removal is not easy and the pressure exceeds 160 kgf/cm 2 , durability of the mold may be weakened and the molded part 150 may be deformed.

Therefore, when manufacturing the lifting suture 10 having the molded part 150 at the distal end according to the present invention, the temperature range is from the melting point of the suture 10 to a range 30 ° C lower than the melting point, and the upper mold 30 ) And the magnitude of the pressure applied to the lower mold 35 is particularly preferably 80 to 160 kgf / cm 2 .

The suture 10 molded as described above is taken out of the forming apparatus 100 and then undergoes a fifth step of cooling.

After the suture 10 whose distal end has been molded through the above steps is cooled and solidified, it is released from the upper mold 30 and the lower mold 35 to be demolded.

As described above, through the first to fifth steps, the suture 10 having a molded distal end may be manufactured.

At this time, according to the present invention, the molded part 150 formed at the distal end of the suture 10 may have various shapes. That is, the molding part formed at the distal end of the suture 10 by forming the shape of the upper mold 30 and the lower mold 35 provided in the molding device 100 into any one of a triangle, a square, a star, and a circular shape. The shape of 150 can be formed in various ways accordingly.

As described above, by forming the molded part 150 at the distal end, it is possible to provide the lifting suture 10 that can be safely sutured without tying a knot during suturing after surgery.

When the lifting suture 10 having the molded portion 150 at the distal end according to the present invention is used, it does not take time to make a knot, the effect of a stronger knot is exhibited, and the suture technique is simple, so the suturing time is drastically reduced. There are advantages to doing so. In addition, it has the advantage of being able to safely and easily perform a suturing operation even if the operator does not have a skilled suture knot technique.

The manufacturing method of the lifting suture 10 having the molded portion 150 at the distal end according to the present invention may include forming barbs 70 on the surface of the lifting suture 10 as shown in FIG. 3 . .

The method for manufacturing the suture 10 having barbs 70 according to the present invention can be manufactured by forming one or more barbs 70 on the surface of the suture 10 as described above, and the barbs 70 are formed. The steps can be performed using conventional barbing processes and equipment.

The barb 70 is formed in a structure capable of providing unidirectional mobility of the lifting suture 10 . That is, the suture 10 having the barbs 70 can suppress movement in the opposite direction inserted by the barbs 70 after the procedure.

The barb 70 may be formed in a protruding structure on the surface of the suture 10, or may be formed by forming an incision on the surface of the suture 10.

In addition, the barb 70 may be formed in a protrusion structure protruding in various shapes such as a triangular pyramid, a triangular pyramid, a triangular pyramid, a quadrangular pyramid, a quadrangular pyramid, a prism, a cone, a truncated cone, and a cylinder.

The barbs 70 may be formed in a structure arranged in a linear arrangement along the longitudinal direction on one or both outer circumferential surfaces of the body of the suture 10, and the suture thread ( 10) It is also possible to form a structure arranged in a spiral arrangement surrounding the body.

The barb 70 can be formed in various structures. For example, as shown in FIG. 3 , it is possible to configure the surface of the suture 10 with protruding protrusions, and it is also possible to partially cut the surface of the body of the suture 10 to form a cutout type.

As described above, since the barbs 70 are formed on the outer surface of the suture 10, the suture 10 inserted into the body is prevented from slipping again in the opposite direction to which the suture 10 was raised, and the fixed tissue is maintained, and the dimpling ( Side effects such as dimpling and migration of the suture 10 can be prevented.

Various methods may be applied to form the barbs 70 . For example, it can be manufactured by injection molding or compression molding the resin of the suture 10 in a mold capable of forming the barbs 70 . In addition, it is also possible to manufacture by applying thermal compression to a portion of the suture 10 for which projections are to be formed. These protruding barbs 70 can be configured in various shapes such as triangular pyramids, triangular pyramids, triangular pyramids, quadrangular pyramids, quadrangular pyramids, prisms, cones, truncated cones, and cylinders, depending on the shape of the mold or processing method.

Through the above steps, manufacturing of the lifting suture 10 having the molded part 150 at the distal end according to the present invention can be completed.

In addition, according to the present invention, the lifting suture 10 having the molded part 150 at the distal end manufactured as described above is then attached to the cannula 200 to manufacture a suture kit, enabling procedures such as skin lifting.

That is, the lifting suture 10 having the molded part 150 at the distal end according to the present invention can be inserted into the cannula 200 and used. The cannula 200 used at this time may be made of a material that is not absorbed in the body or an absorbable material such as metal. The cannula 200 may have a straight or curved shape as a whole, as shown in FIG. 2, and the guide rod 250 may be formed in a generally widely used shape such as a round shape or a cutted appearance. .

That is, referring to FIG. 2 , the cannula 200 includes a guide rod 250 having a pipe shape having a hollow part 230 therein, and a hub 210 to which one end of the guide rod 250 is fixed. ) and the like. And one end of the guide rod 250 is coupled to the hub 210 .

According to the present invention, the guide rod 250 preferably has an outer diameter of 1.8 to 2.2 mm and an inner diameter of 1.3 to 1.7 mm.

When the guide rod 250 is provided in the same size as described above, it is possible to prevent the guide rod 250 from penetrating or breaking blood vessels during surgery. In addition, the suture 10 can easily come out of the cannula 200 after the procedure.

A suture kit as shown in FIG. 3 can be manufactured by coupling the lifting suture 10 having the molded portion 150 at the distal end according to the present invention to the cannula 200.

In the method of manufacturing a suture kit by fastening the lifting suture 10 to the cannula 200, the suture 10 is inserted into the hollow part 230 of the cannula 200 as shown in FIG. 3 and the needle is pressed. A method of inserting the suture 10 by making a hole (eye of the needle) in a needle, a method of incising the wall of a hollow needle to make a groove to hang the suture 10, and the like may be used, but are not limited thereto. A variety of other methods are possible.

According to the present invention, the suture kit can be manufactured by inserting the lifting suture 10 into the hollow part 230 provided in the cannula 200 and the guide rod 250 of the cannula 200, as shown in FIG. can

According to exemplary embodiments, the cannula 210 includes holes into which the lifting suture 10 is inserted at both ends, through which the lifting suture 10 can be inserted into and accommodated in the cannula 210. .

When suturing is performed using the suture 10 having the molded portion 150 formed at the distal end as described above, there is no need to tie a knot at the beginning of the suture, and the suture 10 is more firmly attached without worrying about the knot coming loose. It has the advantage of being fixed. This may be useful not only when suturing the outside of the body, but also when suturing is performed outside the body, such as in laparoscopic surgery.

As described above, the lifting suture 10 having the molded part 150 at the distal end according to the present invention can be safely performed without tying a knot during a lifting procedure, and the suture 10 is firmly maintained and fixed at the treatment site. It can be. Accordingly, skin tissue can be effectively lifted, and an excellent lifting effect can be achieved regardless of the operator's skill level.

The present invention has been described with reference to the experimental examples shown in the drawings, but these are merely exemplary, and those skilled in the art will understand that various modifications and equivalent other experimental examples are possible therefrom. In addition, those skilled in the art to which the present invention pertains will be able to understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. Therefore, the embodiments described above should be understood as illustrative and not restrictive in all respects, and the true technical protection scope of the present invention should be defined by the technical spirit of the appended claims.

10: suture
30: upper mold
35: lower mold
70: barbs
100: molding device
150: molding part
200: cannula
230: hollow part
250: guide rod

Claims (6)

A first step of preparing the suture 10;
A second step of introducing the distal end of the suture thread 10 into the upper mold 30 and the lower mold 35 of the molding device 100;
a third step of heating the upper mold 30 and the lower mold 35 to form the suture thread 10 drawn into the upper mold 30 and the lower mold 35;
a fourth step of forming the distal end of the suture thread 10 by pressing the heated upper mold 30 and lower mold 35; and
A fifth step of cooling the suture 10 in which the distal end is molded; a method of manufacturing a lifting suture 10 having a molding part 150 at the distal end.
The method of claim 1,
Method for manufacturing a lifting suture (10) having a molded part (150) at an end, characterized in that the shape of the upper mold (30) and the lower mold (35) is any one of a triangle, a square, a star shape, or a circular shape.
The method of claim 1,
The material of the suture 10 is polyethylene terephthalate, polyamide, polyvinylidene fluoride, polypropylene, polydioxanone, and polylactic acid. (polylactic acid), polycaprolactone (polycaprolactone), polyhydroxybutyrate (polyhydroxybutyrate) and polyglycolic acid (polyglycolic acid) having a molding part 150 at the end, characterized in that any one selected from the group consisting of Manufacturing method of lifting suture (10)
The method of claim 1,
A method of manufacturing a lifting suture (10) having a molded part (150) at an end, comprising forming barbs (70) on a surface of the lifting suture (10).
A lifting suture (10) having a molding portion (150) at an end thereof manufactured by the manufacturing method of a lifting suture (10) having a molding portion (150) at an end of any one of claims 1 to 4
Inside, the cannula 200 having a guide rod 250 and a hub 210 having a hollow part 230 formed in the longitudinal direction; and
A suture kit comprising a lifting suture (10) having a molded part (150) at an end of claim 7 inserted into the hollow part (230) of the cannula (200).

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