Nose prosthesis capable of preventing displacement

Abstract

The utility model discloses a nose prosthesis capable of preventing displacement, which comprises a nose bridge part, a nasal columella and a positioning support leg, and a nose tip part is arranged at one end of the nose bridge part; the nasal columella is positioned at the nose tip part and is bent towards the inner side so as to form a preset angle with the nose bridge part; the positioning support leg is connected to one end, far away from the nose bridge part, of the nasal columella, and the positioning support leg is vertically connected with the nasal columella to form a T-shaped structure. According to the nose prosthesis capable of preventing displacement, the vertical positioning supporting leg is arranged at one end, far away from the nose bridge part, of the columella nasi, the positioning supporting leg and the columella nasi form the T-shaped structure, and the T-shaped structure is embedded into tissues, so that the contact area between the prosthesis and the surrounding tissues is remarkably increased, and the stability of the prosthesis is greatly improved; according to the nose prosthesis, the prosthesis is effectively prevented from moving in all directions, especially moving in the up-down direction and the front-back direction, so that the nose prosthesis can keep a long-acting attractive shape, and the satisfaction degree of a user is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to orthopedic implantation technical field especially, relate to a kind of nose prosthesis of preventable displacement. BACKGROUND

[0002] Nose prosthesis implantation surgery is a kind of technology widely used in the field of rhinoplasty, aims to improve the appearance and function of nose by implanting artificial material. This surgery is usually used to correct the problems such as collapsed nasal bridge, drooping nasal tip or overly wide alae nasi, to achieve more beautiful and coordinated facial profile.

[0003] Although nose prosthesis implantation technology has made significant progress in the past few decades, prosthesis displacement after implantation is still a persistent and important problem. This problem not only affects the aesthetic effect after surgery, but also can cause serious medical complications. Specifically, prosthesis displacement can cause unnatural or asymmetrical appearance after surgery. Due to insufficient bonding of the prosthesis with the surrounding tissue, or because of improper activity during postoperative recovery, the prosthesis can move, thereby changing the shape and proportion of the nose. This can lead to patient dissatisfaction with the surgical results, and even the need for secondary repair surgery. In addition, the displacement of the prosthesis can also cause adverse reactions such as infection, inflammation or scar formation, affecting the health and quality of life of the patient. SUMMARY

[0004] The utility model aims to solve at least one of the technical problems in the related art. To this end, the purpose of the utility model is to provide a nose prosthesis that can prevent displacement.

[0005] To achieve the above-mentioned purpose, according to the nose prosthesis that can prevent displacement according to the utility model embodiment, it comprises:

[0006] Nasal bridge, one end of the nasal bridge has a nasal tip;

[0007] Nasal columella, the nasal columella is located at the nasal tip and is bent inward to form a predetermined angle with the nasal bridge;

[0008] Positioning leg, the positioning leg is connected to one end of the nasal columella away from the nasal bridge, and the positioning leg is connected perpendicularly to the nasal columella to form a T-shaped structure.

[0009] According to the nose prosthesis capable of preventing displacement provided by the embodiment of the utility model, the vertical positioning leg is arranged at one end of the columella nasi far away from the bridge of the nose, the positioning leg forms a T-shaped structure with the columella nasi, the T-shaped structure is embedded into the tissue, the contact area of the prosthesis and the surrounding tissue is significantly increased, the stability of the prosthesis is greatly improved, the displacement of the prosthesis in each direction, especially the displacement in the up-down and front-back directions, is effectively prevented. The design concept of the multi-point fixation can not only resist the small but continuous force brought by daily activities, but also resist external force to a certain extent, so that the risk of displacement of the prosthesis is greatly reduced. At the same time, the design can also promote the growth and integration of the tissue around the prosthesis, further enhance the long-term stability, and thus make the nose prosthesis maintain a long-acting aesthetic appearance, and improve the satisfaction of the user.

[0010] In addition, the nose prosthesis capable of preventing displacement according to the above-mentioned embodiment of the utility model can also have the following additional technical features:

[0011] According to one embodiment of the utility model, the bottom surface of the positioning leg is provided with a plurality of protrusions for increasing adhesion, and the height of the protrusions is 2-5 mm.

[0012] According to one embodiment of the utility model, the bottom surface of the positioning leg is provided with a plurality of growth holes for tissue growth, and the growth holes are mixed in the protrusions.

[0013] According to one embodiment of the utility model, the structural strength of the middle part of the bridge of the nose is greater than that of the peripheral part of the bridge of the nose.

[0014] According to one embodiment of the utility model, a plurality of micropores are distributed on the bridge of the nose, and the micropore density of the middle part is less than that of the peripheral part, so that the structural strength of the bridge of the nose gradually changes from the middle part to the peripheral part.

[0015] According to one embodiment of the utility model, the surface of the nose prosthesis is coated with a bioactive coating, and the bioactive coating comprises transforming growth factor-β1, vascular endothelial growth factor or interleukin-10.

[0016] According to one embodiment of the utility model, it also comprises a metal reinforcing wire frame, the metal reinforcing wire frame comprises a transverse part and a longitudinal part, the transverse part is built in the positioning leg, and the longitudinal part is built in the columella nasi.

[0017] According to one embodiment of the utility model, the width of the bridge of the nose gradually decreases along the direction from the tip of the nose far away to the tip of the nose.

[0018] According to one embodiment of the utility model, the nose prosthesis adopts a bulking material.

[0019] The additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter in the description of the application. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative labor.

[0021] Fig. 1 is a perspective view of the nose prosthesis which can prevent displacement according to an embodiment of the present application;

[0022] Fig. 2 is a side view of the nose prosthesis which can prevent displacement according to an embodiment of the present application;

[0023] Fig. 3 is a structure schematic view of part of the structure of the nose prosthesis which can prevent displacement according to an embodiment of the present application.

[0024] Fig. 4 is a structure schematic view of another structure of the nose prosthesis which can prevent displacement according to an embodiment of the present application.

[0025] Reference signs:

[0026] 10, nasal bridge part;

[0027] 101, nose tip part;

[0028] H101, micropore;

[0029] 20, columella nasi;

[0030] 30, positioning leg;

[0031] 301, protrusion;

[0032] H301, growth hole.

[0033] The realization of the present application, functional features and advantages will be further explained with reference to the embodiments and the drawings. DETAILED DESCRIPTION

[0034] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary, and are intended to explain the present application, and cannot be understood as a limitation of the present application, and all other embodiments obtained by those skilled in the art based on the embodiments in the present application without creative labor fall within the scope of protection of the present application.

[0035] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0036] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0037] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] In the present utility model, unless otherwise expressly provided and limited, the first feature is "on" or "under" the second feature, which can include direct contact of the first and second features, or indirect contact of the first and second features through another feature therebetween. Moreover, the first feature "on", "above" and "on the surface of" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "under" the second feature includes the first feature directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0039] The preventable displacement of the nasal prosthesis is described in detail below with reference to the accompanying drawings.

[0040] Referring to Figs. 1 to 4 As shown in the figure, the preventable displacement of the nasal prosthesis provided by the present utility model comprises a nose bridge part 10, a columella nasi 20 and a positioning leg 30.

[0041] Specifically, one end of the nose bridge part 10 has a nose tip part 101. The nose bridge part 10 is the main part of the whole prosthesis, which simulates the contour and shape of the natural nose bridge. The nose bridge part 10 is made of a material with good biocompatibility, has appropriate hardness and elasticity, and can also be well compatible with human tissues, reducing the risk of rejection. The nose tip part 101 is formed at one end of the nose bridge part 10, and this integrated design ensures the continuity and aesthetics of the upper part of the prosthesis, while providing a stable support structure.

[0042] The columella nasi 20 is located at the nose tip part 101 and is bent inward to form a predetermined angle with the nose bridge part 10. The columella nasi 20 simulates the anatomical structure of the real columella nasi 20. The columella nasi 20 is bent inward to form a predetermined angle with the nose bridge part 10 to ensure the best aesthetic effect. The columella nasi 20 provides an additional support point for the whole structure, improving the overall stability.

[0043] The positioning leg 30 is connected to one end of the columella nasi 20 away from the nose bridge part 10, and the positioning leg 30 is connected perpendicularly to the columella nasi 20 to form a T-shaped structure. The material of the positioning leg 30 is the same as that of the columella nasi 20, and the structural strength can be higher than that of the columella nasi 20 to provide better anchoring effect. The design of the T-shaped structure greatly increases the contact area of the prosthesis with the surrounding soft tissue, significantly improving the stability of the prosthesis. After being implanted into the human body, the T-shaped structure can effectively embed into the tissue below the human columella nasi 20 to form a fixed point, and the T-shaped structure is a very stable structure, which not only prevents the movement of the prosthesis in the up-down and front-back directions, but also resists lateral displacement.

[0044] According to the nose prosthesis capable of preventing displacement provided by the embodiment of the utility model, a vertical positioning leg 30 is arranged at one end of the columella nasi 20 away from the bridge of the nose 10, the positioning leg 30 forms a T-shaped structure with the columella nasi 20, the T-shaped structure is embedded into the tissue, the contact area of the prosthesis and the surrounding tissue is significantly increased, the stability of the prosthesis is greatly improved, the displacement of the prosthesis in each direction is effectively prevented, especially the displacement in the up-down and front-back directions. The design concept of this multi-point fixation not only can resist the small but continuous force brought by daily activities, but also can resist external force to a certain extent, greatly reducing the risk of displacement of the prosthesis. At the same time, this design can also promote the growth and integration of the tissue around the prosthesis, further enhance the long-term stability, and then make the nose prosthesis maintain long-acting aesthetic appearance, improve the satisfaction of the user.

[0045] In an embodiment of the utility model, the bottom surface of the positioning leg 30 is provided with a plurality of protrusions 301 for increasing adhesion, the height of the protrusion 301 is 2-5mm. The height range is sufficient to provide effective anchoring, and at the same time, it will not cause excessive pressure or irritation to the surrounding tissue.

[0046] The shape of the protrusion 301 can be a circular, rectangular, hemispherical or polygonal shape, so as to contact the tissue with a larger surface area and produce small stress to the tissue. These protrusions 301 are distributed on the bottom surface of the positioning leg 30, forming a microscopic anchoring network. This distribution not only provides a full range of fixation effect, but also allows the tissue to grow between the protrusions 301, further enhancing the long-term stability.

[0047] From the functional point of view, these protrusions 301 greatly enhance the anti-skid and anti-displacement ability of the positioning leg 30. They can be embedded into the tissue, effectively resisting the small movement in each direction, especially when facing the continuous small force brought by daily activities such as speaking, expression change, etc. At the same time, this design also enhances the resistance of the prosthesis to sudden external force, improving the overall safety.

[0048] In addition, this protrusion 301 design also helps to reduce the initial sliding of the prosthesis during surgery, making the implantation process more accurate and controllable.

[0049] In an embodiment of the utility model, the bottom surface of the positioning leg 30 is provided with a plurality of growth holes H301 for tissue growth, and the plurality of growth holes H301 are mixed in the plurality of protrusions 301.

[0050] In this embodiment, on the bottom surface of the positioning foot 30, in addition to the protrusions 301, a plurality of growth holes H301 are arranged. These growth holes H301 are staggered with the protrusions 301, forming a microstructure network. The protrusions 301 provide mechanical fixation, while the growth holes H301 provide conditions for long-term biological fixation. This structure allows the surrounding tissue to gradually grow into the growth holes H301, forming a firm biological anchor. Over time, the tissue will gradually fill these pores, creating a structure similar to a root system, tightly integrating the prosthesis with the surrounding tissue.

[0051] The inner walls of the growth holes H301 can be treated with a special surface treatment or coating, such as hydroxyapatite or specific bioactive molecules, to further promote cell attachment and tissue growth. This treatment can accelerate the tissue integration process and improve the long-term stability of the prosthesis.

[0052] The combination of the growth holes H301 and protrusions 301 described above significantly enhances the long-term stability of the prosthesis. As tissue grows into the growth holes H301, the prosthesis forms a dynamic, active connection with the surrounding tissue, greatly reducing the risk of long-term displacement.

[0053] Preferably, the structural strength of the middle portion of the bridge 10 is greater than that of the peripheral portion of the bridge 10. The harder central portion ensures that the shape of the bridge is not easily deformed by external forces, maintaining the desired aesthetic effect. The soft edges increase the fit of the prosthesis with the surrounding tissue, reducing the likelihood of displacement of the prosthesis, while also reducing irritation to the surrounding soft tissue. In addition, this distribution of structural strength is closer to the characteristics of natural nasal tissue. The harder middle portion simulates the support function of the nasal bones, while the softer peripheral portion simulates the characteristics of the nasal cartilage and soft tissue. This biomimetic design helps the prosthesis to more naturally integrate with the human structure, improving overall harmony and functionality.

[0054] In one embodiment of the present application, the bridge 10 is distributed with a plurality of micro-holes H101, and the density of micro-holes H101 in the middle portion is less than that of micro-holes H101 in the peripheral portion, so that the structural strength of the bridge 10 from the middle portion to the peripheral portion changes in a gradient.

[0055] In this embodiment, the entire surface of the nasal bridge portion 10 is distributed with micro-holes H101. Moreover, in the middle region of the nasal bridge portion 10, the density of micro-holes H101 is relatively low. This lower density of micro-holes H101 ensures that the central region maintains a higher structural strength, providing the necessary support and shape maintenance capability. As transition is made to the peripheral region, the density of micro-holes H101 gradually increases, and this increase in density leads to a decrease in the overall structural strength of the material, thus achieving a gradient change in structural strength from the center to the edge. The lower density of micro-holes H101 in the middle portion ensures the shape stability and support force of the nasal bridge, while the higher density of micro-holes H101 in the peripheral portion provides better softness and fit, which can provide a more natural and comfortable touch for the patient. In addition, these micro-holes H101 can promote the growth of surrounding tissues, and after the tissues enter the micro-holes H101, the stability of the long-term combination of the prosthesis with the human tissues is enhanced.

[0056] In some embodiments of the present application, the surface of the nasal prosthesis is coated with a bioactive coating, which includes transforming growth factor-β1, vascular endothelial growth factor or interleukin-10.

[0057] Transforming growth factor-β1 (TGF-β1) is a multifunctional cytokine that plays a central role in tissue repair and regeneration. It can promote the synthesis of extracellular matrix, regulate inflammatory response, and promote angiogenesis. In the application of nasal prosthesis, TGF-β1 can promote the healing of surrounding tissues, reduce scar formation, and at the same time enhance the bonding strength of the prosthesis with the surrounding tissues.

[0058] Vascular endothelial growth factor (VEGF) is another important bioactive component. The main function of VEGF is to promote the formation of new blood vessels. It is crucial to form a good vascular network around the nasal prosthesis, accelerate tissue healing, and reduce the risk of infection. In addition, good vascularization can also promote tissue regeneration around the prosthesis, further enhancing the stability and natural feel of the prosthesis.

[0059] Interleukin-10 (IL-10) is an anti-inflammatory factor that can inhibit excessive inflammatory response, reduce postoperative edema and pain. By regulating the local immune environment, IL-10 can promote wound healing and reduce scar formation, thereby improving the aesthetic effect of the operation and the comfort of the patient.

[0060] In this embodiment, by coating the surface of the nasal prosthesis with a bioactive coating, the integration process of the prosthesis with the surrounding tissues is significantly improved, not only improving the biocompatibility of the prosthesis, but also actively promoting the integration of the prosthesis with the surrounding tissues, bringing significant improvement to the long-term effect of the rhinoplasty surgery.

[0061] In some embodiments of the present application, the nasal prosthesis further comprises a metal reinforcing wire holder, the metal reinforcing wire holder comprises a transverse part and a longitudinal part, the transverse part is built in the positioning leg 30, and the longitudinal part is built in the nasal columella 20. The metal reinforcing wire holder can be made of medical-grade titanium alloy or nickel-titanium memory alloy, which has excellent biocompatibility, corrosion resistance and mechanical properties.

[0062] The metal reinforcing wire holder design can improve the structural strength of the positioning support and the nasal columella 20, so that the positioning leg 30 as an anchoring effect can maintain a stable form and reliable anchoring effect, thereby improving the overall stability and shape retention capability of the prosthesis, and enhancing the anti-deformation capability of the prosthesis, reducing the collapse or deformation problem that may occur after long-term use.

[0063] Preferably, the width of the nasal bridge part 10 gradually decreases along the direction from away from the tip part 101 to close to the tip part 101. In a natural state, the human nose gradually narrows from the root to the tip, which is a common phenomenon. This structure is mainly composed of the nasal bone, the nasal process of the maxilla and the nasal cartilage. The upper part of the nasal bridge is relatively wide and is mainly supported by the hard bone structure; and the lower part gradually narrows and transitions to the more flexible cartilage structure. The design of the present application is based on this natural structure feature and strives to reproduce this anatomical feature in the prosthesis. From the aesthetic point of view, this gradually narrowing design can design a more harmonious and natural visual effect, producing a smooth line feeling in the vision, avoiding the feeling of abruptness or incoordination, so as to achieve the purpose of improving the overall coordination of the face.

[0064] Preferably, the nasal prosthesis adopts a bulking material (polytetrafluoroethylene), which is a material with good biocompatibility and can be naturally integrated with human tissues without rejection reaction. In addition, the bulking material is soft in texture and can better simulate the elasticity and texture of the real nasal tissue, making the plastic effect more natural.

[0065] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0066] The above merely describes preferred embodiments of the present application, and is not intended to limit the patent scope of the present application, and any equivalent structural transformation or direct / indirect application in other related technical fields under the inventive concept of the present application, as described in the present application specification and drawings, is included in the patent protection scope of the present application.

Claims

1. A pre-displaceable nasal prosthesis, characterized in that Comprising: a nose bridge having a tip at one end; a columella nasi located at the tip and bent inwardly to form a predetermined angle with the nose bridge; a positioning leg connected to the columella nasi at an end away from the nose bridge and perpendicularly connected to the columella nasi to form a T-shaped structure.

2. The pre-displaceable nasal prosthesis of claim 1, wherein, The bottom surface of the positioning leg is provided with a plurality of protrusions for increasing adhesion, the height of the protrusions being 2-5 mm.

3. The pre-displaceable nasal prosthesis of claim 1, wherein, The bottom surface of the positioning leg is provided with a plurality of growth holes for tissue growth, the growth holes being mixed among the protrusions.

4. The pre-displaceable nasal prosthesis of claim 1, wherein, The middle portion of the nose bridge has a greater structural strength than the peripheral portion of the nose bridge.

5. The pre-displaceable nasal prosthesis of claim 4, wherein, The nose bridge is provided with a plurality of micropores, and the micropore density of the middle portion is less than that of the peripheral portion, so that the structural strength of the nose bridge gradually changes from the middle portion to the peripheral portion.

6. The pre-displaceable nasal prosthesis of claim 1, wherein, The surface of the nose prosthesis is coated with a bioactive coating, the bioactive coating comprising transforming growth factor-β1, vascular endothelial growth factor or interleukin-10.

7. The pre-displaceable nasal prosthesis of claim 1, wherein, Further comprising a metal reinforcing wire holder, the metal reinforcing wire holder comprising a transverse portion and a longitudinal portion, the transverse portion being built into the positioning leg, and the longitudinal portion being built into the columella nasi.

8. The pre-displaceable nasal prosthesis of claim 1, wherein, The width of the nose bridge gradually decreases along the direction from away from the tip to close to the tip.

9. The pre-displaceable nasal prosthesis of claim 1, wherein, The nose prosthesis adopts a bulking material.

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