WO2021085903A1

WO2021085903A1 - Implant for nasolabial angle corrective surgery

Info

Publication number: WO2021085903A1
Application number: PCT/KR2020/014154
Authority: WO
Inventors: 안태환; 임재훈
Original assignee: 주식회사 로믹코리아; 안태환
Priority date: 2019-10-30
Filing date: 2020-10-16
Publication date: 2021-05-06
Also published as: KR102117415B1

Abstract

An implant for nasolabial angle corrective surgery according to an embodiment of the present invention comprises: a maxillary contact surface which is brought into contact with a region extending downward from the anterior nasal spine of the maxilla; an anterior nasal spine contact surface which is brought into contact with the bottom surface of the anterior nasal spine; and an outer surface which faces the opposite direction to the direction faced by the maxillary contact surface. According to the present invention, an artificial implant for use in nasolabial angle corrective surgery can be provided to perform surgery for correcting the nasolabial angle of a patient.

Description

Implants for nasolabial angle improvement surgery

The present invention relates to a plastic surgery insert, and more particularly, to a surgical insert for improving the nasolabial angle.

In general, people think that rhinoplasty is an augmentation rhinoplasty that raises the nose. However, not only surgery to raise the nose, but also surgery to raise the tip of the nose is also being performed. At this time, various surgical methods are being performed depending on what material is used to raise the tip of the nose. Autologous cartilages such as ear cartilage, septal cartilage, and costal cartilage are mainly used for nose tip surgery. However, the amount of such autologous cartilage is limited, and there is a concern of causing complications at the collection site.

Alloplastic materials used for nose tip surgery include Medpor, PCL polycaprolactone mesh plate, and silicone. These artificial materials have advantages and disadvantages, of which silicone is most often used for nose shaping. Silicone implants are inexpensive and have excellent tissue stability, are easy to remove during reoperation, and can be simultaneously raised to the tip of the nose along with shaping the nose. However, there is a problem of capsular contracture, in which the nose gradually shortens after the nose is made, and protrusion caused by gradually thinning the skin at the tip of the nose. In order to solve this problem, there is a need to develop an alternative implant.

In particular, Asians often have an acute angle of around 70 degrees in the nasolabial angle (the angle at which the nose and lips are connected), and it is necessary to develop an alternative implant to improve the nasolabial angle. If the nasolabial angle is around 95 degrees, it is considered to be the most aesthetically pleasing. Therefore, there is a growing demand for a surgical implant for a nasolabial leg improvement surgery that can make the nasolabial leg around 95 degrees.

The present invention is to solve the above technical problem, an object of the present invention is to provide a nasolabial angle improvement surgical insert capable of performing an operation to improve the nasolabial angle of a patient.

An implant for improving nasolabial angle according to an embodiment of the present invention includes: a maxillary contact surface in contact with a region extending downward from the anterior tragedy of the maxilla; A pre-tragic contact surface contacting the bottom surface of the pre-tragic; And an outer surface facing a direction opposite to a direction in which the maxillary bone contact surface is viewed.

The maxillary contact surface and the outer surface may be provided in a concave curved shape in a direction in which the outer surface is viewed from both ends toward the center between the both ends.

The pre-tragic contact surface may be provided in a concave curved shape from both ends to the center between the both ends.

The outer surface may be provided to be inclined in a direction away from the maxillary contact surface as it goes upward.

The thickness between the maxillary bone contact surface and the outer surface may increase from both ends to the center between the both ends.

The anterior tragedy contact surface may be connected between an upper side of the maxillary contact surface and an upper side of the outer surface, and may be provided to be inclined upward from the maxillary contact surface to the outer surface.

According to an embodiment of the present invention, by providing an artificial implant in the operation to improve the nasolabial angle, it is possible to perform an operation to improve the nasolabial angle of a patient.

1 is a view showing the side of a human skull.

2 is a perspective view showing an implant for nasolabial leg improvement surgery according to an embodiment of the present invention so that the anterior tragedy contact surface is visible.

Figure 3 is a perspective view showing the bottom surface of the implant for improving the nasolabial angle of Figure 2 visible.

Figure 4 is a side cross-sectional view of the nasolabial angle improvement surgical insert of Figure 2 cut in the AA direction.

5 is a front view of the implant for nasolabial angle improvement surgery of FIG. 2 as viewed so that the contact surface of the maxillary bone is front.

6 and 7 are photographs showing an example in which a nasolabial angle improvement surgical insert according to an embodiment of the present invention is applied to a skull model.

2 is a view showing the best mode for the implementation of the present invention.

Hereinafter, embodiments of the present invention will be described clearly and in detail to the extent that a person having ordinary knowledge in the technical field of the present invention can easily implement the present invention.

1 is a view showing the side of a human skull. Referring to Figure 1, the human skull includes the maxillary bone 20 constituting the upper jaw. The maxillary bone 20 includes an anterior tragedy 21 that contacts the lower part of the nasal septal cartilage of the nose. The region extending downward from the anterior tragedy 21 of the maxillary bone 20 and the angle formed by the anterior tragedy 21 and the degree of protrusion of the anterior tragedy 21 have a great influence on the nasolabial angle.

Figure 2 is a perspective view showing the nasolabial angle improvement surgical insert 100 according to an embodiment of the present invention so that the anterior nasal contact surface 120 is visible. FIG. 3 is a perspective view showing the bottom surface 140 of the implant 100 for improving nasolabial angle of FIG. 2. 4 is a side cross-sectional view of the nasolabial angle improvement surgical insert 100 of FIG. 2 cut in the AA direction. 5 is a front view of the nasolabial angle improvement surgical insert 100 of FIG. 2 as viewed so that the maxillary contact surface 110 is front. 6 and 7 are photographs showing an example in which the implant 100 for improving nasolabial angle according to an embodiment of the present invention is applied to a skull model.

2 to 7, the nasolabial leg improvement surgical insert 100 is inserted into a site where the nose pillar and throat meet to improve nasolabial angle. According to an embodiment, the nasolabial angle improvement surgical insert 100 includes a maxillary bone contact surface 110, an anterior tragedy contact surface 120, an lateral surface 130, and a bottom surface 140.

According to one embodiment, the nasolabial leg improvement surgical implant 100 may be provided with a polycaprolactone (PCL) material. PCL materials are biocompatible materials. PCL (polycaprolactone), which is a biodegradable polymer material, has excellent biocompatibility and ton-toxicity in the body. The nasolabial leg improvement surgical insert 100 may be manufactured using a PCL material having structural stability and strong retention as a living body implant.

The implant 100 for improving the nasolabial leg using PCL of the present invention may use a gamma sterilized porous PCL mesh. The PCL mesh is composed of a fiber structure having a diameter of about 0.3 mm, and can form a porous interconnect structure having a 0/60/120° lay-down pattern. The PCL mesh may have a porosity of 70%.

PCL is a safe, non-toxic bioabsorbable material that is easily excreted and reabsorbed through normal metabolic pathways by hydrolysis of polymeric ester bonds. The PCL mesh has a porous feature, and because of this, blood and cell contents are absorbed into the pores through capillary action after implantation in the body, thereby having strong resistance to infection. PCL mesh is convenient to use as a graft material because its size and shape can be precisely and easily adjusted, and it takes more than two years to disintegrate, its strength is maintained for a long time, and it does not remain in the body for a lifetime, thus lowering the risk of potential infection. I can.

The nasolabial leg improvement surgical insert 100 using PCL can withstand pressure without being deformed. In addition, since the implant 100 for improving nasolabial angle using PCL is not easily deformed or damaged by an external shock, the shape and function of the patient's nose and throat after surgery can be preserved without being damaged.

In contrast, the nasolabial surgery implant 100 is non-toxic to the human body other than PCL, has a low risk of infection, and can be made of other materials having sufficient strength against pressure or impact.

The maxillary bone contact surface 110 is in contact with a region extending downward from the anterior tragedy 21 of the maxillary bone 20. According to an embodiment, the maxillary bone contact surface 110 may be provided in a concave curved shape in a direction from which the outer surface 130 looks toward the center between both ends. Therefore, the maxillary contact surface 110 generally corresponds to a region extending downward from the anterior tragedy 21 of the maxillary bone 20 having a curved shape that is convex outward, so that the nasolabial angle improvement surgical insert 100 is suitable for surgery. When inserted by means of, it is possible to increase the degree of adhesion to the attached region of the maxillary bone 20.

The pre-tragic contact surface 120 is in contact with the bottom surface of the pre-tragic 21. According to an embodiment, the anterior tragedy contact surface 120 is provided to extend from the upper side of the maxillary contact surface 110. For example, the anterior tragedy contact surface 120 may be provided to be connected between the upper side of the maxillary contact surface 110 and the upper side of the outer surface 130. The pre-tragic contact surface 120 may be provided in a concave curved shape from both ends to the center between both ends. In addition, the anterior tragedy contact surface 120 may be provided to be inclined in an upward direction from the maxillary contact surface 110 to the outer surface 130. Therefore, the anterior tragedy contact surface 120 has a curved shape that is convex outward, and is provided in a shape capable of wrapping the bottom of the anterior tragedy 21 which inclines upward as the protruding direction goes, so that the nasolabial leg improvement surgical insert ( When 100) is inserted by surgery, the degree of adhesion to the bottom surface of the anterior tragedy 21 can be increased.

The outer surface 130 is a surface facing a direction opposite to the direction that the maxillary contact surface 110 is facing. According to an embodiment, the outer surface 130 is provided to extend from the upper side of the pre-tragic contact surface 120. The outer surface 130 may be provided in a concave curved shape in a direction facing the outer surface from both ends toward the center between both ends. Therefore, when the nasolabial leg improvement surgical insert 100 is inserted by surgery, the operated area may have a more natural curved shape.

In addition, the outer surface 130 may be provided to be inclined in a direction away from the maxillary contact surface 110 as it goes upward. Therefore, when the nasolabial angle improvement surgical insert 100 is inserted by surgery, the angle formed by the nose pillar and the philtrum can be increased. The thickness between the maxillary bone contact surface 110 and the outer surface 130 may be provided to increase from both ends to the center between both ends. As described above, since both ends are provided thin, the difference in the boundary between the region where the nasolabial angle improvement surgical insert 100 is provided and the region not provided can be minimized, thereby having a more natural appearance after surgery. In addition, since it is provided thick in the middle, the nasolabial leg improvement effect can be sufficiently obtained.

The bottom surface 140 is provided to be connected between the lower side of the maxillary contact surface 110 and the lower side of the outer surface 130. The shape of the bottom surface 140 when the bottom surface 140 is viewed in front may be determined by the shape of the maxillary contact surface 110 and the outer surface 130. Although the shape of the bottom surface 140 is shown to be flat, it may be selectively provided in a concave or convex shape as needed.

According to an embodiment, referring to FIGS. 4 and 5, when viewed from the side, the distance from the upper ends of the both ends of the nasolabial angle improvement surgical implant 100 to the upper end of the anterior tragic contact surface 120 (D ₁ ) May be provided in 7 to 80mm. _{The distance (D 2} ) from the upper end of the maxillary contact surface 110 to the upper end of the anterior tragedy contact surface 120 may be 4 to 50 mm. _{The height (D 3} ) of the upper ends of both ends of the nasolabial angle improvement surgical insert 100 may be provided in a range of 4 to 50 mm. _{The height (D 4} ) of the upper end of the outer surface 130 may be provided in the range of 6mm to 75mm. _{When viewed from the side, the distance (D 5} ) from the lower end of both ends of the nasolabial angle improvement surgical insert 100 to the lower end positioned vertically downward from the upper end of the outer surface 130 may be provided in 6 to 70 mm. have. _{The distance (D 6} ) from the upper end of the maxillary contact surface 110 to the lower end positioned vertically downward from the upper end of the outer surface 130 may be provided in 3 to 40 mm. _{The horizontal straight line distance (D 7} ) between both ends of the nasolabial angle improvement surgical insert 100 may be provided as 8 to 100mm. _{The horizontal distance (D 8} ) between the outer surface 130 and the maxillary contact surface 110 at both ends of the nasolabial angle improvement surgical insert 100 may be provided from 0.5mm to 10mm.

_{For example, when viewed from the side, the distance (D 1} ) from the top of both ends of the nasolabial surgery implant 100 to the top of the anterior tragedy contact surface 120 may be provided as 8 mm. _{The distance (D 2} ) from the upper end of the maxillary contact surface 110 to the upper end of the anterior tragedy contact surface 120 may be provided as 5 mm. _{The height (D 3} ) of the upper ends of both ends of the nasolabial angle improvement surgical insert 100 may be provided as 5mm. _{The height D 4} of the upper end of the outer surface 130 may be provided as 7.5 mm. _{When viewed from the side, the distance (D 5} ) from the lower end of both ends of the nasolabial angle improvement surgical insert 100 to the lower end positioned vertically downward from the upper end of the outer surface 130 may be provided as 7 mm. _{The distance (D 6} ) from the upper end of the maxillary contact surface 110 to the lower end positioned vertically downward from the upper end of the outer surface 130 to the lower end positioned vertically downward from the upper end of the maxillary contact surface 110 may be provided as 4mm. _{The horizontal linear distance (D 7} ) between both ends of the nasolabial angle improvement surgical insert 100 may be provided as 10mm. _{The horizontal distance (D 8} ) between the outer surface 130 and the maxillary contact surface 110 at both ends of the nasolabial angle improvement surgical insert 100 may be provided as 1 mm.

The nasolabial leg improvement surgical insert 100 according to an embodiment of the present invention basically has the above-described shape and size, but may be cut or ground to a suitable size for a patient.

As described above, the implant for surgery for improving nasolabial angle according to an embodiment of the present invention 100 is inserted in a region where the nose pillar and throat meet, and by its shape, it is provided in a shape with high adhesion to the bone of the inserted region. It can improve the nasolabial angle.

The above-described contents are specific examples for carrying out the present invention. In addition to the above-described embodiments, the present invention will include simple design changes or embodiments that can be easily changed. In addition, the present invention will also include techniques that can be easily modified and implemented using the embodiments. Therefore, the scope of the present invention is limited to the above-described embodiments and should not be determined, and should be determined by the claims and equivalents of the present invention as well as the claims to be described later.

Claims

A maxillary bone contact surface in contact with a region extending downward from the anterior tragedy of the maxilla;

A pre-tragic contact surface contacting the bottom surface of the pre-tragic;

An outer surface facing a direction opposite to a direction facing the maxillary bone contact surface; And

Includes; a bottom surface connected between the lower side of the maxillary contact surface and the lower surface of the outer surface; and

The maxillary contact surface and the outer surface are provided in a concave curved shape in a direction in which the outer surface is viewed from both ends toward the center between the both ends,

The anterior tragedy contact surface is provided in a concave curved shape from both ends to the center between the both ends,

The outer surface is provided to be inclined in a direction away from the maxillary contact surface as it goes upward,

The thickness between the maxillary bone contact surface and the outer surface increases from both ends to the center between the both ends,

Nasal angle improvement surgical implants provided in gamma-sterilized porous PCL mesh.
The method of claim 1,

The distance from the upper end of both ends to the upper end of the anterior tragedy contact surface when viewed from the side, the distance from the upper end of the maxillary contact surface to the upper end of the anterior tragedy contact surface when viewed from the side, the height of the upper ends of the both ends, the The height of the upper end of the outer surface, the height of the upper end of the outer surface, the distance from the lower end of the both ends to the lower end located vertically downward from the upper end of the outer surface when viewed from the side, vertically downward from the upper end of the maxillary contact surface The ratio of the distance from the lower end to the lower end positioned vertically downward from the upper end of the outer surface, the horizontal linear distance between the both ends, and the horizontal distance between the outer surface and the maxillary bone contact surface at both ends is 8:5: Nasal angle improvement surgical implant provided in 5:7.5:7:4:10:1.