KR20190109323A - Sutures for facial and body lifting, comprising new types of protrusions - Google Patents

Abstract

The present invention relates to a suture comprising a plurality of protrusions in pairs facing a main yarn of a suture. The suture of the present invention has excellent fixation force and safety. More specifically, the plurality of protrusions paired in the suture of the present invention has a plate shape, thereby preventing the suture from slipping in the reverse direction. Each protrusion unit supports the tissues and maintains excellent fixation force even if the suture is cut. In particular, the plurality of paired protrusions have a plate shape to improve the tensile strength and to prevent the cut of the suture, a procedure is facilitated, and an excellent lifting effect is allowed in the tissue and the manufacture of the suture is facilitated.

Description

Sutures for facial and body lifting, comprising new types of protrusions}

The present invention relates to a suture for facial and body lifting, and more particularly, to a suture comprising a plurality of protrusions in pairs facing the suture headquarters, the suture of the present invention has excellent fixing force and safety.

In particular, the plurality of protrusions paired in the suture of the present invention has a plate (plate) shape, to prevent the sutures from slipping in the reverse direction, and each one of the protrusion unit serves to support the tissue sutures Maintains excellent holding force even if is cut. In particular, the plurality of paired protrusions have a plate shape to improve the tensile strength to prevent the sutures to be cut, to facilitate the procedure, to have a good lifting effect in the tissue, and to facilitate the production of the sutures.

In general, sutures are used to connect or suture various injured parts of internal tissues such as skin, muscles, tendons, internal organs, bone tissues, nerves, blood vessels, etc. and incisions following surgical procedures.

Currently, when suturing the incision of the skin, it is required to minimize the bleeding and pain, shorten the procedure time, and prevent the scar from appearing after the recovery due to the surgery. In the past, a suture that has a smooth surface like a general thread was used. Suture is not fixed to the skin in the state of penetrating the skin during the breakage, so the problem is caused by the release of the surgical site, the suture is opened, and the procedure is very uncomfortable, and the procedure takes a long time There is a problem.

In addition, as the suture is not tightly fixed to the skin and flows, the recovery period takes a long time after the procedure, and in particular, when the surgical site is exposed to the outside, such as plastic surgery, the knotted part is exposed to the outside.

Therefore, in recent years, a method of forming a barb consisting of a plurality of spinous processes by scratching a surface of a suture with a knife and forming a spinous process in one or both directions has been proposed to prevent the suture from loosening.

However, these sutures also have improved fixation force compared to conventional sutures, but the spines are inserted in a straight line within the tissue, and the force of the spinous protrusions is weakened while maintaining the tissue for a long time. do.

In addition, the conventional suture forms a protrusion by cutting, so the thickness of the suture becomes thin due to the formation of the protrusion, which causes a problem that the tensile strength of the product is rather weakened by the formation of the protrusion. Moreover, when cutting using a blade, the tensile strength of the suture may be weakened due to uneven cutting.

In particular, in the case of absorbent suture is made of a material that is decomposed in the body, as compared with other materials, the strength is not only relatively weak, but also the suture is cut early in the process of decomposition, there is a disadvantage that does not maintain a long lifting state.

In this regard, Korean Patent No. 1241955 proposes a form for maintaining a protrusion by forming a plurality of knots in a suture as a suture for improving the above problem, but the manufacturing process is very complicated and the suture is cut. If you have a disadvantage that does not maintain the holding force and tension.

The present inventors have completed the present invention as a result of a long research to provide a suture easy to mass production with excellent tensile strength and safety between the body tissue and the suture, and has a tensile strength that can maintain a long lifting effect.

The present invention specifically includes a suture having a novel type of protrusion that solves the problem that the protruding portion of the existing suture is biodegradable faster than the suture headquarters, so that the duration of the lifting effect is short and the tensile strength of the suture is easily broken. to provide.

In particular, by manufacturing the suture headquarters and the protrusions at the same time, mass production is possible by facilitating the manufacturing process, and the shape and direction of the protrusions having appropriate fixing force and tensile strength can be adjusted according to the use, and excellent tensile strength compared to the existing sutures It provides a suture with strength and lifting effect.

The present invention comprises (i) a flexible and extended form of suture headquarters and (ii) a plurality of protrusions for securing the suture to tissue, the protrusions having a triangular, spade or modified form thereof, A suture is used to secure facial or body tissues that are paired with vertices or bases facing each other.

The present invention provides a suture characterized in that the protrusion has the form of a flat plate (plate).

The present invention provides a suture characterized in that the protrusion is formed integrally on the outer circumferential surface of the suture headquarters, the size of the protrusion is regular or irregular. In addition, the vertices of the opposite protrusions may or may not overlap each other.

The present invention may be formed on one side or both sides of the plurality of protrusions along the longitudinal direction of the suture.

In addition, the present invention provides a suture is formed alternately formed on both sides of the suture along the longitudinal direction of the plurality of protrusions or opposing protrusions.

In addition, the bottom surface of the protrusion may be flat, concave in the shape of the vertex, or convex in the opposite direction of the vertex, but is not limited thereto.

The tensile strength of the suture of the present invention may be 20 to 60 N, preferably 30 to 50 N tensile strength.

The suture of the present invention may be made of one or more materials selected from the group consisting of polymer, gold, stainless metal, silk and cotton, but is not limited thereto.

The polymer is a non-absorbent polymer selected from the group consisting of polyethylene terephthalate, polytetrafluoroethylene, polyvinylidene fluoride and polypropylene; Or "polydioxanone, dioxanone, polydioxane, polycaprolactone, caprolactone, polylactic acid, lactic acid, caprolactone-lactic acid polymer, glycolic acid polymer and lactic and glycolic acid polymer, dioxanone and caprolactone polymer" It may be an absorbent polymer selected from the group consisting of, but is not limited thereto.

The present invention relates to a suture comprising a plurality of projections in pairs facing the suture headquarters, the plurality of projections paired in the sutures of the present invention to more firmly support the suture headquarters in the tissue to improve the fixing force. In addition, it has the advantage of lowering the possibility of serious side effects such as skin, tissue rupture, etc. of the sutured area and the outer surface of the suture is evenly fixed to enable a safer procedure.

In addition, by having a plurality of protrusions paired in the suture of the present invention in the form of a plate, to prevent the sutures from slipping in the reverse direction, even if each suture unit serves to support the tissue, even if the suture is cut Maintains excellent fixation. In particular, the plurality of paired protrusions have a plate shape to improve the tensile strength to prevent the sutures to be cut, to facilitate the procedure, to have a good lifting effect in the tissue, and to facilitate the production of the sutures.

1 is a real picture of the suture for lifting the face and body according to an embodiment of the present invention.
Figure 2 is a schematic diagram showing the structure of the suture for lifting the face and body according to an embodiment of the present invention.
3 is a cross-sectional view illustrating a cross section of the suture of FIG. 2.
Figure 4 is a side view showing the side of the suture of FIG.
Figure 5 is a schematic diagram showing the structure of the suture for lifting the face and body according to another embodiment of the present invention.
Figure 6 is a schematic diagram schematically showing the structure of the suture for lifting the face and body according to another embodiment of the present invention.
Figure 7 is a schematic diagram showing the structure of the suture for lifting the face and body according to another embodiment of the present invention.

Although the present invention may be modified in various ways and may have various embodiments, specific embodiments will be described by way of example in the drawings to help understand the present invention. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Unless defined otherwise, all terms used in the present invention have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs.

The suture of the present invention may be selected from one or more of the group consisting of polymer, gold, stainless metal, silk and cotton.

The polymer may be a nonabsorbent polymer or an absorbent polymer. The nonabsorbent polymer may be polyethylene terephthalate, polytetrafluoroethylene, polyvinylidene fluoride or polypropylene, and the absorbent polymer may be “polydioxanone, dioxanone, polydioxane, polycaprolactone, caprolactone, poly Lactic acid, lactic acid, caprolactone-lactic acid polymers, glycolic acid polymers, and lactic acid and glycolic acid polymers, dioxanone and caprolactone polymers ”.

The polymer used as the suture of the present invention may be a linear, branched or multiaxial polymer.

Sutures of the present invention may preferably be "absorbable suture", "biodegradable suture" or "degradable suture". The absorbent suture means a suture that is decomposed and absorbed into the body after being introduced into the tissue.

The term "decomposition" means a chain cutting process in which, for example, the polymer chain is split into oligomers or monomers. Chain cleavage can occur through a variety of mechanisms, including, for example, chemical reactions (eg, hydrolysis, oxidation / reduction, enzyme mechanisms or combinations thereof), pyrolysis or photolysis methods.

A “nonabsorbable suture” is suitable when the suture is intended to remain unabsorbed in the body or to be physically removed from the body.

"Suture diameter" means the diameter of the suture headquarters. The suture of the present invention may include the diameter of various suture headquarters, and may be selected depending on the nature of the tissue to be sutured, the lifting effect, and the like. Smaller sutures are easier to manipulate and leave less scars, but at the same time the suture's tensile strength tends to decrease.

"Suture headquarters" means a long cylindrical suture body except for the protruding portion. This is referred to for convenience to distinguish the structure of the suture of the present invention.

"Protrusions" are formed on the outer circumferential surface of the suture, and serve to improve the adhesion between the sutured tissue and surrounding tissue and the suture. The protrusions of the present invention preferably have the form of a flat plate. Specifically, the shape of the protrusion of the present invention is flat and distinguished from the conventional cone to polygonal horn, the shape of the protrusion may have a triangular, spade or modified form thereof.

The shape of the protrusion of the present invention may be an angled corner, may not be an angle, but is not limited thereto.

In addition, the thickness of the protrusions of the present invention may vary, which may be selected depending on the nature of the tissue to be sutured, the lifting effect and the like.

“Formed in one piece” means that the suture headquarters and the protrusions are formed in one piece and are not separated separately. Preferably, the suture of the present invention can be produced by injection molding using a mold, variable cross-section extrusion using a variable cross-section extruder, 3D printer and the like.

By "tissue elevation treatment (lifting)" is meant to relocate tissue in a direction opposite to the direction of gravity, that is, from a low position to a high position. Facial maintenance ligaments support facial soft tissue in normal anatomical position. However, as the body ages, downward movement of the tissue occurs due to gravity and tissue volume loss, and the facial tissue sags as fat descends to the plane between the facial parietal and myocardium. Facial or body lifting treatments are one representative example of medical treatments intended to pull up these sagging tissues and are known as tissue elevation treatments.

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention and preferred embodiments of the present invention.

Figure 1 shows a real picture of the suture according to an embodiment of the present invention.

2 is a schematic diagram schematically showing the structure of a suture according to an embodiment of the present invention. As shown in FIG. 2, the suture 10 according to the exemplary embodiment of the present invention has protrusions 12 formed at predetermined intervals in the suture head office 11.

As shown in FIG. 3, the protrusions may have a form in which two protrusions face each other and face each other, and have a butterfly shape in which a vertex overlaps or does not overlap. The protrusions may be triangular, spade, or a variant thereof, and the base 13 may be flat, concave or convex.

As shown in FIG. 3, when the bottom 13 of the protrusion is flat, the bottom 13 of the protrusion and the suture central axis 15 are perpendicular to each other, and the bottom 13 of the protrusion is recessed. An angle θ between the bottom surface 13 of the protrusion and the suture central axis 15 may be between 0 and 90 °.

As shown in FIG. 3, the angle θ between the bus bar 14 of the protrusion and the central axis 15 of the suture head office 11 may be 10 to 60 °, and preferably 20 to 50 °. have. If the angle is too large, the workability is inferior, and if the angle is too small, the area of the surface fixed to the skin tissue is narrowed and the fixing ability may be reduced.

The vertex where the base 13 and the bus bar 14 meet serves to apply tensile force to the suture pulled on both sides, and as the angle becomes smaller, the acute angle between the bus bar 14 and the base 13 decreases to deepen the tissue. It can get stuck and the tensile force tends to be strong.

4 shows a side view of the suture. Protrusion 12 of the present invention may be in the form of a plate protruding on both sides of the outer peripheral surface 11 of the suture headquarters.

5 is a schematic diagram schematically showing a protrusion structure of a suture according to another embodiment of the present invention. Figure 5 shows a form formed with a projection on one side of the outer peripheral surface of the suture head office 20.

6 is a schematic diagram schematically showing the structure of a suture according to another embodiment of the present invention. Figure 6 shows a form alternately formed on both sides of the projection 32 on the outer peripheral surface of the suture headquarters (30).

7 is a schematic diagram schematically showing the structure of a suture according to another embodiment of the present invention. 7 shows a form in which a pair of protrusions 33 are alternately formed at both sides on the outer circumferential surface of the suture head office 30.

Test Example Tensile Strength Test of Suture

In a suture having a plurality of pairs of protrusions, the tensile strength of the suture having a conical or polypyramidal shape (Comparative Example 1) and the suture having a plate-shaped protrusion (Example 1) Comparative test.

In order to perform the comparative test, a suture of the type shown in Figure 1 was prepared in Example 1, and a suture having a conical shape while having the same shape as in Example 1 was prepared in Comparative Example 1.

Suture samples were prepared for tensile force measurement experiments, and the sutures to be tested on the universal testing machine were fixed to the upper clamp and the lower clamp. When the suture was pulled out by operating the tester at a rate of 30 ± 5 cm / min, the tensile load was measured at the point where the thread breaks.

The tensile force measurement experiment was repeated five times, and the measurement results are shown in Table 1 below.

Classification Comparative Example 1 Example 1 Tensile Strength (N) 18.4 ~ 18.7 37.27-44.8

As shown in Table 1, it was confirmed that the suture having a plate-like protrusion of the present invention has an excellent tensile strength of about twice that of the suture having a protrusion of a cone or polygonal pyramid shape.

Although the present invention has been described with reference to the drawings and embodiments described above, these are merely exemplary, and various modifications and changes can be made by those skilled in the art without departing from the essential characteristics of the present invention. And substitutions will be possible. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical spirit of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by the embodiments and the accompanying drawings. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

10: suture
11: Suture Headquarters
12: turning
13: bottom
14: Mothership
15: suture central axis
20: suture
22: turning pair
30: suture
32: turning
33: turning pair

Claims (12)

(i) a flexible, extended form of suture headquarters and (ii) a plurality of protrusions for securing the suture to tissue;
The protrusion has a triangular, spade or modified form thereof,
Suture is used for fixing the facial or body tissue, characterized in that the pair is formed so as to face the vertex or the bottom of the projection.
The suture of claim 1, wherein the protrusion has a flat plate shape.
The suture of claim 1, wherein the protrusion is formed integrally on the outer circumferential surface of the suture headquarters, and the size of the protrusion is regular or irregular.
The suture of claim 1, wherein the vertices of the opposite protrusions overlap or do not overlap each other.
The suture of claim 1, wherein the plurality of protrusions are formed only at both sides or one side in the longitudinal direction of the suture.
The suture of claim 1, wherein the plurality of protrusions are alternately formed at both sides of the suture along the longitudinal direction of the suture.
The suture of claim 1, wherein the pair of opposing protrusions are alternately formed at both sides of the suture along the longitudinal direction of the suture.
The suture according to claim 1, wherein the bottom surface of the protrusion is flat, concave in the vertex direction or convex in the opposite direction to the vertex.
The suture of claim 1, wherein the suture has a tensile strength of 20 to 60 N.
10. The suture of claim 9, wherein the suture's tensile strength is 30 to 50N.
The suture of claim 1, wherein the suture is made of a material selected from the group consisting of polymer, gold, stainless metal, silk, and cotton.
The method of claim 11, wherein the polymer is a non-absorbent polymer selected from the group consisting of polyethylene terephthalate, polytetrafluoroethylene, polyvinylidene fluoride and polypropylene; Or "polydioxanone, dioxanone, polydioxane, polycaprolactone, caprolactone, polylactic acid, lactic acid, caprolactone-lactic acid polymer, glycolic acid polymer and lactic and glycolic acid polymer, dioxanone and caprolactone polymer" Suture for facial and body lifting, characterized in that the absorbent polymer selected from the group consisting of.

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