Nose shaper and its preparation method and use method

Abstract

The present invention relates to a nose shaper, and its preparation and use methods. The nose shaper comprises a nose splint and a pressure-reducing pad. Both the nose splint and the pressure-reducing pad are semi-fan-shaped thin sheets, with the pressure-reducing pad positioned on the side of the nose splint that contacts the nose. The nose splint of the nose shaper can change with time and temperature, exhibiting excellent plasticity, tear resistance, water resistance, and dimensional stability. It also has a fragrant aroma, improving user experience, and is relatively low-cost and easily marketable.

Description

Technical Field

[0001] The present invention relates to the field of medical rehabilitation and nursing equipment, and more particularly to a nose shaper and a preparation method and a use method thereof. Background Art

[0002] Currently, rhinoplasty is one of the most common plastic surgery procedures. Using methods such as prosthetic rhinoplasty and injection rhinoplasty, various nasal defects such as collapsed noses, hooked noses, and upturned noses can be treated, significantly improving appearance. After rhinoplasty, the nose is generally slightly swollen, or residual blood can cause gaps in the inner side of the alar cartilage and the columella. If healing is not done properly, the nose's shape can be affected. A nose shaper can provide support and shaping, prevent prosthetic displacement, stabilize the nose's shape, reduce swelling, reduce hyperplasia, prevent hematomas, shorten the postoperative recovery period, and reduce the risk of nasal adhesions. It plays a crucial role in reducing postoperative inflammation and infection, promoting recovery, and ensuring the effectiveness of rhinoplasty.

[0003] At present, the nasal shapers commonly used in clinical practice are made of low-temperature thermoplastic plates, such as CN203576721U, which are usually cross-linked polycaprolactone. This material has strong plasticity. After being soaked in hot water for a certain period of time, it becomes soft and can be shaped at will. After the temperature is lowered, it gradually hardens and has shape memory function. However, this material has obvious disadvantages: 1) It is expensive; 2) It has a plastic smell. Since the nasal shaper fits tightly against the nasal cavity when used, long-term wearing will cause discomfort to the patient; 3) A cross-linking process is used during production, which requires one-time shaping. The residual scraps cannot be recycled and can only be discarded, which is not environmentally friendly; 4) The appearance is relatively simple, and the surface is rough and matte, which is not beautiful enough. Therefore, a nasal shaper that has the advantages of no odor, low cost, environmental protection and strong plasticity is very necessary. Summary of the Invention

[0004] In view of the problems of existing nose shapers in the above-mentioned prior art, one of the objects of the present invention is to provide a nose shaper, the production cost of the raw materials used in the nose shaper is lower than that of cross-linked polycaprolactone, the hardness of which can change with time and temperature, and it has excellent plasticity, waterproofness and dimensional stability. At the same time, it has an aromatic smell, which can improve the user experience.

[0005] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A nose shaper comprises a nose splint and a pressure-reducing pad; both the nose splint and the pressure-reducing pad are semi-fan-shaped thin sheet structures, wherein the pressure-reducing pad is placed on the side of the nose splint that contacts the nose.

[0007] In the above technical solution, there is no fixed connection between the pressure relief pad and the nose splint, and they can just be fitted together when in use.

[0008] In the above technical solution, the nose splint has and / or does not have a hole structure, preferably has a hole structure; the hole structure is distributed throughout the surface of the nose splint, and the interval between the holes is 1-10 mm, preferably 2-4 mm; the pore diameter of the hole structure is 0.5-5 mm, preferably 1-3 mm.

[0009] In the above technical solution, the pressure relief pad has and / or does not have a hole structure, preferably has a hole structure; the hole structure is distributed throughout the surface of the pressure relief pad, and the interval between the holes is 1-10mm, preferably 2-4mm; the pore diameter of the hole structure is 0.5-5mm, preferably 1-3mm

[0010] In the above solution, when both the nose splint and the pressure relief pad have hole structures, it is preferred that the hole structures of the two are correspondingly connected so as to make the nose shaper have good air permeability.

[0011] In the above technical solution, the thickness of the nose splint is 0.5-5 mm, preferably 1-3 mm.

[0012] In the above technical solution, the thickness of the pressure relief pad is 0.1 to 2 mm, preferably 0.5 to 1 mm.

[0013] In the above technical solution, the pressure relief pad is made of at least one material selected from rubber, sponge, thermoplastic elastomer, cloth, paper, gel, leather, and plasticine. The pressure relief pad can be in any shape, preferably in the form of a rectangular, square, or circular sheet larger than the nose, and can be tailored to the shape of the nasal splint during use. The pressure relief pad can be perforated, or it can be perforated along with the nasal splint during manufacture.

[0014] In the above technical solution, the nasal splint is made of a copolyester material, wherein the copolyester material comprises copolyester X and copolyester Y; wherein the copolyester X comprises aliphatic diacid and / or its derivative segments, aromatic diacid and / or its derivative segments, and diol segments; wherein the diol segments comprise at least one diol segment with a cyclic structure segment and at least one aliphatic diol segment; wherein the molar percentage of the aromatic diacid and / or its derivative segments in the total diacid and / or its derivative segments is 15-60%;

[0015] The copolyester Y comprises aliphatic diacid and / or its derivative segments, aromatic diacid and / or its derivative segments, and at least one aliphatic diol segment; the molar percentage of the aromatic diacid and / or its derivative segments relative to the total diacid and / or its derivative segments is 50-95%. The aromatic diacid content of the copolyesters X and Y of the present invention within the above range can improve the rigidity of the copolyesters to varying degrees.

[0016] In the above technical solution, based on 100 parts by weight of the total copolyester, the copolyester X is 50 to 99 parts, preferably 55 to 80 parts. When the content of the copolyester X of the present invention is within the above range, the temperature required for triggering softening of the material can be reduced to varying degrees, thereby increasing the hardness and wear resistance of the material.

[0017] The content of the copolyester Y is 1 to 50 parts, preferably 20 to 45 parts. When the content of the copolyester Y of the present invention is within the above range, the curing time of the copolyester composition material can be reduced to varying degrees.

[0018] In the above technical solution, the molar percentage of the aromatic diacid and / or its derivative segments in the copolyester X to the total diacid and / or its derivative segments is 25-60%, more preferably 30-60%.

[0019] Preferably, the molar percentage of the cyclic diol segments in the copolyester X is 1-60%, preferably 5-25%. The introduction of the cyclic diol segments can increase the rigidity of the copolyester, lower the temperature required to trigger softening, and increase the hardness and wear resistance of the material.

[0020] Preferably, the molar ratio of the total diacid segments to the total diol segments in the copolyester X is (0.8-1):1, preferably (0.9-1):1.

[0021] Preferably, the molar percentage of the aromatic diacid and / or its derivative segments in the copolyester Y to the total diacid and / or its derivative segments is 60-85%.

[0022] Preferably, the molar ratio of the total diacid segments to the total diol segments in the copolyester Y is (0.8-1):1, preferably (0.9-1):1.

[0023] In the above technical solution, the copolyester X and the copolyester Y are each independently at least one of a random copolymer, an alternating copolymer, a block copolymer and a graft copolymer, preferably a random copolymer and / or a block copolymer.

[0024] In the above technical solution, the molecular weight of the copolyester X and the copolyester Y is in the range of 20,000-200,000, preferably 80,000-150,000.

[0025] In the above technical solution, the aliphatic diacid and / or its derivative is selected from at least one of 1,4-butanediol and / or its derivative, 1,6-hexanediol and / or its derivative.

[0026] The aromatic diacid and / or its derivatives are selected from terephthalic acid and / or its derivatives.

[0027] The diol with a cyclic structure is selected from at least one of 1,4-cyclohexanedimethanol, isosorbide, and 2,2,4,4-tetramethyl-1,3-cyclobutanediol.

[0028] The aliphatic diol is selected from at least one of 1,3-propylene glycol, 1,4-butanediol, and 1,6-hexanediol.

[0029] The introduction of the cyclic diol into the copolyester X alone can reduce the thickness of the copolyester crystals, thereby lowering the melting point of the copolyester and increasing its ease of use. Furthermore, the introduction of the cyclic diol can reduce the crystallization rate of the copolyester, resulting in an increase in the curing time of the copolyester material.

[0030] Compared to copolyester X alone, copolyester Y has a shorter cure time, but a higher softening temperature and poorer hardness and wear resistance. Therefore, a combination of copolyester X and copolyester Y is used to compensate for the deficiencies of either copolyester X or Y alone. By adjusting the ratio of the two, the combined copolyester achieves the desired softening temperature, hardness, wear resistance, and cure time.

[0031] In the above technical solution, the aliphatic diol segment in the copolyester X is different from the aliphatic diol segment in the copolyester Y; preferably,

[0032] The aliphatic diol chain segment in the copolyester X is derived from 1,4-butanediol; and the aliphatic diol chain segment in the copolyester Y is derived from 1,3-propylene glycol and / or 1,6-hexanediol.

[0033] In the above technical solution, based on 100 parts by total weight of copolyester X and copolyester Y, 0.5 to 10 parts, preferably 1.5 to 8 parts, of fragrance are further included.

[0034] The fragrance is selected from at least one of fruit essence and floral essence; the fruit essence includes but is not limited to strawberry, banana, sweet orange, pineapple, grape and other fragrances; the floral essence includes but is not limited to rose, jasmine, tuberose, lily of the valley, magnolia and other fragrances.

[0035] In the above technical solution, based on 100 parts by total weight of copolyester X and copolyester Y, 1-15 parts of a lubricant are further included, and the lubricant is selected from at least one of stearic acid, butyl stearate, oleamide, ethylene bisstearamide and low-density polyethylene.

[0036] The method for preparing the copolyester material of the present invention comprises the steps of mixing components including the copolyester X and the copolyester Y and then melt-blending them.

[0037] In the above technical solution, the mixing is carried out under stirring conditions, and the stirring rate is 20-150r / min.

[0038] In the above technical solution, the stirring time is 5-15 minutes.

[0039] In the above technical solution, the melt blending is carried out by extrusion granulation through a twin-screw extruder; preferably, the temperature of the extrusion granulation is 110 to 260°C, more preferably 160 to 220°C.

[0040] The second object of the present invention is to provide a method for preparing the nose shaper, which has low production cost, is easy to use, and provides good user experience.

[0041] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0042] A method for preparing a nose shaper, comprising sequentially extruding, molding, and / or cutting a copolyester material to obtain a nose splint profile of the nose shaper, wherein the extrusion is preferably melt extrusion;

[0043] The extrusion temperature is 90-230°C, preferably 110-170°C;

[0044] The molding method is injection molding and / or compression molding. The equipment also adopts the extrusion, injection molding, and compression molding equipment commonly used in the prior art.

[0045] A third object of the present invention is to provide a method for using a nose shaper, comprising heating the nose splint of the nose shaper to fully soften it, then quickly cooling it to a temperature acceptable to the human body, fixing a pressure-reducing pad on the side of the nose splint that contacts the nose, and then placing it on the nose, adjusting the shape of the nose splint according to the patient's nasal characteristics, and waiting for the nose splint to harden.

[0046] Preferably, the nose splint of the nose shaper after unpacking is heated to fully soften it, and the heating methods include but are not limited to soaking it in hot water, especially boiling water, heating in a microwave oven, oven, hot plate, etc.; then it is quickly cooled to a temperature acceptable to the human body, and the cooling methods include but are not limited to soaking it in cold water, ice water or liquid nitrogen, contacting it with ice cubes or ice bags, and placing it in a refrigerator refrigerator or freezer or freezer; then it is wiped clean, and the pressure relief pad is fixed to the side of the nose splint that contacts the nose, and then placed on the nose. The shape of the nose splint is adjusted according to the patient's nasal characteristics. After the adjustment is completed, it is fixed above the nose with medical tape and wait for the nose splint to harden.

[0047] Beneficial effects of the present invention:

[0048] 1. Low cost and easy to promote;

[0049] 2. It has a fragrant smell and good user experience;

[0050] 3. The scraps from the processing can be recycled and reused, which is beneficial to environmental protection;

[0051] 4. Good appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 This is a schematic diagram of the structure of the nose shaper of the present invention.

[0053] Reference numerals: 1. nose splint, 2. pressure relief pad, 3. ventilation hole. The figure shows a nose shaper, including a nose splint and a pressure relief pad; both the nose splint and the pressure relief pad are semi-fan-shaped thin sheet structures. DETAILED DESCRIPTION

[0054] The present invention will be described in detail below with reference to specific embodiments. It is necessary to point out that the following embodiments are only used to further illustrate the present invention and are not to be construed as limiting the scope of protection of the present invention. Non-essential improvements and adjustments made by those skilled in the art to the present invention based on the contents of the present invention still fall within the scope of protection of the present invention.

[0055] It should also be noted that the various specific technical features described in the following specific embodiments can be combined in any appropriate manner without contradiction. To avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0056] In addition, the various embodiments of the present invention may be arbitrarily combined as long as they do not violate the concept of the present invention. The technical solutions thus formed belong to part of the original disclosure of this specification and also fall within the scope of protection of the present invention.

[0057] Sources of reagents: All reagents used in the present invention are commercially available.

[0058] In the following examples and comparative examples, the weight-average molecular weight of the polymers was measured by gel permeation chromatography (GPC) using tetrahydrofuran (THF) as solvent on a Waters-208 instrument (with a Waters 2410RI detector, a flow rate of 1.5 mL / min, and 30° C.), calibrated with styrene standards.

[0059] The composition of the polyester composition is determined by the feeding of raw materials; wherein, the types of reaction raw materials can be adjusted accordingly according to the composition and molecular weight of the target product, and the molecular weight of the product and the content of each repeating unit in the product can be controlled by adjusting the feeding amount and feeding ratio.

[0060] Example 1

[0061] A nose shaper includes a nose splint and a pressure-reducing pad. Both the nose splint and the pressure-reducing pad are semi-fan-shaped thin sheets, with the pressure-reducing pad positioned on the side of the nose splint that contacts the nose. The nose splint and the pressure-reducing pad have a pore structure with a 2mm spacing between the pores. The pore structure has a 2mm diameter. The pressure-reducing pad is made of sponge and is 0.6mm thick. The nose splint is 2mm thick.

[0062] Preparation of a nasal splint: 7 kg of terephthalic acid-butylene glycol-succinic acid-1,4-cyclohexanedimethanol copolyester X (weight-average molecular weight of 120,000, wherein the terephthalic acid repeating unit content is 60 mol% based on the total moles of terephthalic acid and succinic acid repeating units; the 1,4-cyclohexanedimethanol repeating unit content is 25 mol% based on the total moles of butylene glycol and 1,4-cyclohexanedimethanol repeating units) particles, 2.5 kg of terephthalic acid-propylene glycol-succinic acid copolyester Y (weight-average molecular weight of 100,000, wherein the terephthalic acid repeating unit content is 60 mol% based on the total moles of terephthalic acid and succinic acid repeating units) particles, 0.2 kg of jasmine essence, and 0.3 kg of low-density polyethylene were mixed under stirring (stirring at 30 rpm for 10 minutes). The molar ratio of the total diacid segments to the total diol segments in the copolyester X is 0.95:1, and the molar ratio of the total diacid segments to the total diol segments in the copolyester Y is 0.95:1. The obtained mixture is extruded and granulated through a twin-screw extruder, the screw speed is controlled to 10 rpm, the torque is 20 N*m, and the temperatures of the sections from the feed port to the extrusion port in the twin-screw extruder are 150°C, 160°C, 170°C, 170°C, 170°C, and 170°C, respectively, to obtain copolyester material A1. After the copolyester material A1 is melted, it is pressed into a semi-fan-shaped sheet structure of appropriate size at 170°C and 1000 MPa. After waiting for about 1 hour for it to completely harden, the nose shaper nose splint B1 can be obtained.

[0063] Example 2

[0064] A nose shaper includes a nose splint and a pressure-reducing pad. Both the nose splint and the pressure-reducing pad are semi-fan-shaped thin sheets, with the pressure-reducing pad positioned on the side of the nose splint that contacts the nose. The nose splint and the pressure-reducing pad have a hole structure with a spacing of 2.5 mm between the holes, and the hole diameter of the hole structure is 2 mm. The pressure-reducing pad is made of rubber and has a thickness of 0.5 mm. The thickness of the nose splint is 3 mm.

[0065] Preparation of a nasal splint: 6.5 kg of terephthalic acid-butylene glycol-adipate-isosorbide copolyester X (weight-average molecular weight of 130,000, wherein the terephthalic acid repeating unit content is 55 mol% based on the total moles of terephthalic acid and adipic acid repeating units; the isosorbide repeating unit content is 20 mol% based on the total moles of butylene glycol and isosorbide repeating units) pellets, 3 kg of terephthalic acid-hexanediol-succinic acid copolyester Y (weight-average molecular weight of 100,000, wherein the terephthalic acid repeating unit content is 60 mol% based on the total moles of terephthalic acid and succinic acid repeating units) pellets, 0.2 kg of jasmine essence, and 0.3 kg of low-density polyethylene were mixed under stirring (stirring at 30 rpm for 10 minutes). The molar ratio of the total diacid segments to the total diol segments in the copolyester X is 1:1, and the molar ratio of the total diacid segments to the total diol segments in the copolyester Y is 1:1. The resulting mixture is extruded and granulated through a twin-screw extruder. The screw speed is controlled to 10 rpm and the torque is 20 N*m. The temperatures of the sections from the feed port to the extrusion port in the twin-screw extruder are 150°C, 160°C, 170°C, 170°C, 170°C, and 170°C, respectively, to produce copolyester material A2. After the copolyester material A2 is melted, it is pressed into a semi-fan-shaped sheet structure of appropriate size at 170°C and 1000 MPa. After waiting for about 1 hour for complete hardening, the nose shaper nose splint B2 is obtained.

[0066] Example 3

[0067] A nose shaper includes a nose splint and a pressure-reducing pad. Both the nose splint and the pressure-reducing pad are semi-fan-shaped thin sheets, with the pressure-reducing pad positioned on the side of the nose splint that contacts the nose. The nose splint and the pressure-reducing pad have a hole structure with a spacing of 2.2 mm between the holes. The hole structure has a diameter of 2.2 mm. The pressure-reducing pad is made of rubber and has a thickness of 0.5 mm. The thickness of the nose splint is 2 mm.

[0068] Preparation of nasal splint: Under stirring conditions (stirring rate of 30 rpm, time for 10 min), 6.5 kg of terephthalic acid-butylene glycol-succinic acid-2,2,4,4-tetramethyl-1,3-cyclobutanediol copolyester X (weight average molecular weight of 150,000, wherein the content of terephthalic acid repeating units is 30 mol% based on the total molar number of terephthalic acid and succinic acid repeating units; butanediol and 2,2,4,4-tetramethyl-1,3-cyclobutanediol copolyester X) were added. The present invention also prepares a mixture of 2,2,4,4-tetramethyl-1,3-cyclobutanediol (20 mol % 2,2,4,4-tetramethyl-1,3-cyclobutanediol) particles, 3 kg of terephthalic acid-hexanediol-succinic acid copolyester Y (weight-average molecular weight 100,000, 60 mol % terephthalic acid repeating units, based on the total molar number of terephthalic acid and succinic acid repeating units), 0.2 kg of jasmine essence, and 0.3 kg of low-density polyethylene. The molar ratio of the total diacid segments to the total diol segments in the copolyester X is 0.9:1, and the molar ratio of the total diacid segments to the total diol segments in the copolyester Y is 0.9:1. The resulting mixture was extruded and granulated through a twin-screw extruder at a controlled screw speed of 10 rpm and a torque of 20 Nm. The temperatures in the sections from the feed inlet to the extrusion outlet of the twin-screw extruder were adjusted to 150°C, 160°C, 170°C, 170°C, 170°C, and 170°C, respectively, to produce copolyester material A3. Copolyester material A3 was melted and pressed into a semi-sector-shaped sheet structure of appropriate size at 170°C and 1000 MPa. The sheet was then allowed to fully harden for approximately one hour to produce the nose shaper, nose splint B3.

[0069] Example 4

[0070] A nose shaper includes a nose splint and a pressure-reducing pad. Both the nose splint and the pressure-reducing pad are semi-fan-shaped thin sheets, with the pressure-reducing pad positioned on the side of the nose splint that contacts the nose. The nose splint and the pressure-reducing pad have a pore structure with a 2mm spacing between the pores. The pore structure has a 2mm diameter. The pressure-reducing pad is made of sponge and is 0.7mm thick. The nose splint is 3mm thick.

[0071] Preparation of a nasal splint: 7 kg of terephthalic acid-butylene glycol-succinic acid-1,4-cyclohexanedimethanol copolyester X (weight-average molecular weight of 120,000, wherein the content of terephthalic acid repeating units is 60 mol%, based on the total moles of terephthalic acid and succinic acid repeating units; the content of 1,4-cyclohexanedimethanol repeating units is 25 mol%), 2.5 kg of terephthalic acid-propylene glycol-succinic acid copolyester Y (weight-average molecular weight of 110,000, wherein the content of terephthalic acid repeating units is 80 mol%), 0.2 kg of jasmine essence, and 0.3 kg of low-density polyethylene were mixed under stirring (stirring at 30 rpm for 10 minutes). The molar ratio of the total diacid segments to the total diol segments in the copolyester X is 0.95:1, and the molar ratio of the total diacid segments to the total diol segments in the copolyester Y is 1:1. The resulting mixture is extruded and granulated through a twin-screw extruder. The screw speed is controlled to 10 rpm and the torque is 20 N*m. The temperatures of the sections from the feed port to the extrusion port in the twin-screw extruder are 150°C, 160°C, 170°C, 170°C, 170°C, and 170°C, respectively, to produce copolyester material A4. After the copolyester material A4 is melted, it is pressed into a semi-fan-shaped sheet structure of appropriate size at 170°C and 1000 MPa. After waiting for about 1 hour for complete hardening, the nose shaper nose splint B4 is obtained.

[0072] Example 5

[0073] A nose shaper includes a nose splint and a pressure-reducing pad. Both the nose splint and the pressure-reducing pad are semi-fan-shaped thin sheets, with the pressure-reducing pad positioned on the side of the nose splint that contacts the nose. The nose splint and the pressure-reducing pad have a hole structure with a spacing of 2.2 mm between the holes. The hole structure has a diameter of 2.2 mm. The pressure-reducing pad is made of rubber and has a thickness of 0.5 mm. The thickness of the nose splint is 2 mm.

[0074] Preparation of nose splint: Under stirring conditions (stirring rate of 30 rpm, time for 10 min), 7 kg of terephthalic acid-butylene glycol-succinic acid-2,2,4,4-tetramethyl-1,3-cyclobutanediol copolyester X (weight average molecular weight of 150,000, wherein the content of terephthalic acid repeating units is 60 mol% based on the total molar number of terephthalic acid and succinic acid repeating units; butanediol and 2,2,4,4-tetramethyl-1,3-cyclobutanediol copolyester X) were added. The invention further comprises a mixture of 2.5 kg of terephthalic acid-propylene glycol-succinic acid copolyester Y (having a weight-average molecular weight of 100,000 and a terephthalic acid repeating unit content of 60 mol%, based on the total molar number of terephthalic acid and succinic acid repeating units), 0.2 kg of jasmine essence, and 0.3 kg of low-density polyethylene. The molar ratio of the total diacid segments to the total diol segments in the copolyester X is 1:1, and the molar ratio of the total diacid segments to the total diol segments in the copolyester Y is 0.9:1. The resulting mixture was extruded and granulated through a twin-screw extruder at a controlled screw speed of 10 rpm and a torque of 20 Nm. The temperatures in the sections from the feed inlet to the extrusion outlet of the twin-screw extruder were adjusted to 150°C, 160°C, 170°C, 170°C, 170°C, and 170°C, respectively, to produce copolyester material A5. After melting copolyester material A5, pressurize it at 170°C and 1000 MPa to form a semi-sector-shaped sheet structure of appropriate size. After allowing it to completely harden for approximately one hour, the nose shaper, nose splint B5, was obtained.

[0075] Example 6

[0076] A nose shaper includes a nose splint and a pressure-reducing pad. Both the nose splint and the pressure-reducing pad are semi-fan-shaped thin sheets, with the pressure-reducing pad positioned on the side of the nose splint that contacts the nose. The nose splint and the pressure-reducing pad have a pore structure with a 2mm spacing between the pores. The pore structure has a 2mm diameter. The pressure-reducing pad is made of sponge and is 0.7mm thick. The nose splint is 3mm thick.

[0077] Preparation of a nasal splint: 7 kg of terephthalic acid-butylene glycol-succinic acid-isosorbide copolyester X (weight-average molecular weight of 130,000, wherein the terephthalic acid repeating unit content is 60 mol% based on the total moles of terephthalic acid and succinic acid repeating units; the isosorbide repeating unit content is 5 mol% based on the total moles of butylene glycol and isosorbide repeating units) particles, 2.5 kg of terephthalic acid-propylene glycol-succinic acid copolyester Y (weight-average molecular weight of 100,000, wherein the terephthalic acid repeating unit content is 60 mol% based on the total moles of terephthalic acid and succinic acid repeating units) particles, 0.2 kg of jasmine essence, and 0.3 kg of low-density polyethylene were mixed under stirring (stirring at 30 rpm for 10 minutes). The molar ratio of the total diacid segments to the total diol segments in the copolyester X is 0.95:1, and the molar ratio of the total diacid segments to the total diol segments in the copolyester Y is 0.9:1. The resulting mixture is extruded and granulated through a twin-screw extruder, with the screw speed controlled to 10 rpm and the torque to 20 N*m. The temperatures of the sections from the feed port to the extrusion port in the twin-screw extruder are sequentially 150°C, 160°C, 170°C, 170°C, 170°C, and 170°C, to produce copolyester material A6. After the copolyester material A6 is melted, it is pressed into a semi-fan-shaped sheet structure of appropriate size at 170°C and 1000 MPa. After waiting for about 1 hour for complete hardening, the nose shaper nose splint B6 is obtained.

[0078] Comparative Example 1

[0079] 9.5 kg of terephthalate-butylene glycol-succinate-1,4-cyclohexanedimethanol copolyester X (weight-average molecular weight 120,000, terephthalate repeating unit content 60 mol% based on the total moles of terephthalic acid and succinate repeating units; 1,4-cyclohexanedimethanol repeating unit content 25 mol% based on the total moles of butanediol and 1,4-cyclohexanedimethanol repeating units) particles, 0.2 kg of jasmine essence, and 0.3 kg of low-density polyethylene were mixed under stirring at 30 rpm for 10 minutes. The molar ratio of the total diacid segments to the total diol segments in copolyester X was 1:1. The resulting mixture was extruded and granulated through a twin-screw extruder at a controlled screw speed of 10 rpm and a torque of 20 Nm. The temperatures in the sections from the feed inlet to the extrusion outlet of the twin-screw extruder were adjusted to 150°C, 160°C, 170°C, 170°C, 170°C, and 170°C, respectively, to produce copolyester material A7. Copolyester material A7 was melted and pressed into a semi-sector-shaped sheet structure of appropriate size at 170°C and 1000 MPa. The sheet was then allowed to fully harden for approximately one hour to produce the nose shaper, nose splint B7.

[0080] Comparative Example 2

[0081] 9.5 kg of terephthalic acid-butylene glycol-adipate-isosorbide copolyester X (weight-average molecular weight 130,000, 55 mol% terephthalic acid repeating units, based on the total moles of terephthalic acid and adipic acid repeating units; 20 mol% isosorbide repeating units, based on the total moles of butylene glycol and isosorbide repeating units) particles, 0.2 kg jasmine essence, and 0.3 kg low-density polyethylene were mixed under stirring (30 rpm for 10 minutes). The molar ratio of the total diacid segments to the total diol segments in copolyester X was 0.9:1. The resulting mixture was extruded and granulated through a twin-screw extruder at a controlled screw speed of 10 rpm and a torque of 20 Nm. The temperatures in the sections from the feed inlet to the extrusion outlet of the twin-screw extruder were adjusted to 150°C, 160°C, 170°C, 170°C, 170°C, and 170°C, respectively, to produce copolyester material A8. After melting copolyester material A8, pressurize it at 170°C and 1000 MPa to form a semi-sector-shaped sheet of appropriate size. Allow it to completely harden for approximately one hour to obtain the nose shaper, nose splint B8.

[0082] Comparative Example 3

[0083] 6.5 kg of terephthalic acid-butylene glycol-succinic acid copolyester Y (weight-average molecular weight of 100,000, with a terephthalic acid repeating unit content of 25 mol % based on the total molar number of terephthalic acid and succinic acid repeating units) particles, 3 kg of terephthalic acid-butylene glycol-adipic acid copolyester (weight-average molecular weight of 100,000, with a terephthalic acid repeating unit content of 65 mol % based on the total molar number of terephthalic acid and adipic acid repeating units) particles, 0.2 kg of jasmine essence, and 0.3 kg of low-density polyethylene were mixed under stirring (stirring at 30 rpm for 10 minutes). The molar ratio of total diacid segments to total diol segments in the copolyester Y was 0.95:1. The resulting mixture was extruded and granulated through a twin-screw extruder at a controlled screw speed of 10 rpm and a torque of 20 Nm. The temperatures in the sections from the feed inlet to the extrusion outlet of the twin-screw extruder were adjusted to 150°C, 160°C, 170°C, 170°C, 170°C, and 170°C, respectively, to produce copolyester material A9. Copolyester material A9 was melted and pressed into a semi-sector-shaped sheet structure of appropriate size at 170°C and 1000 MPa. The sheet was then allowed to fully harden for approximately one hour to produce nose shaper and splint B9.

[0084] Test Example 1 Softening Temperature Test

[0085] The nose shapers and nose splints obtained in Examples 1-6 and Comparative Example 3 were placed in hot water at different temperatures, and the temperatures required to trigger the softening of the nose shapers and nose splints were recorded. The results are shown in Table 1.

[0086] Table 1

[0087]

[0088] As can be seen, the softening temperatures required for nose shaper plates B1-B6 obtained in Examples 1-6 are all lower than those for nose shaper plate B9 obtained in Comparative Example 3, with the maximum softening temperature reaching 20°C. Lowering the softening trigger temperature for nose shaper plates can significantly increase the convenience of using the nose shaper.

[0089] Test Example 2 Shore A Hardness Test

[0090] Copolyesters A1-A8 obtained in Examples 1-6 and Comparative Examples 1-2 were melted, treated at 170 and 1000 MPa for 5 minutes, and pressed into 4 mm thick, 7 cm side plates. The hot plates were removed and quenched using a cold iron block that had been kept at room temperature for 1 minute, with time zero recorded. The quenched plates were then tested for Shore A hardness over time (measured using a Drick Shore A handheld durometer, with the results taken after 3 seconds). The results are shown in Table 2 below.

[0091] Table 2 Shore A hardness test

[0092]

[0093] The results in Table 2 above show that the copolyesters A1-A8 obtained in Examples 1-6 and Comparative Examples 1-2 all exhibited low hardness at the beginning of the test (at higher temperatures), with the hardness slowly increasing over time after cooling. Compared to the copolyesters A7-A8 obtained in Comparative Examples 1-2, the copolyesters A1-A6 obtained in Examples 1-6 exhibited a faster curing speed, reaching a Shore A hardness of 50 in approximately 4 minutes, compared to approximately 7 minutes for the copolyesters A7-A8 obtained in Comparative Examples 1-2. The copolyesters A1-A6 obtained in Examples 1-6 exhibited excellent plasticity and fixability, making them suitable for use in the preparation of nasal shaping devices.

[0094] Test Example 3 Waterproof Test

[0095] The nose shaper nose splints B1-B6 obtained in Examples 1-6 were weighed, measured, photographed, and observed for appearance. The nose splints were immersed in water at 25°C for 24 hours, then taken out and dried, and observed, weighed, measured, photographed, and observed for appearance. If the appearance of the nose splint after immersion in water does not change compared with that before immersion, it is recorded as "no change", otherwise it is recorded as "change". If the size of the nose splint after immersion in water changes within ±2% compared with that before immersion, it is recorded as "no change", otherwise it is recorded as "change". If the weight of the nose splint after immersion in water changes within ±2% compared with that before immersion, it is recorded as "no change", otherwise it is recorded as "change". The results are shown in Table 3.

[0096] Test Example 4: Storage Time Test

[0097] The nose shaper nose splints B1-B6 obtained in Examples 1-6 were weighed, measured, photographed, and observed for appearance. Then, the obtained nose splints were placed in a normal pressure environment at room temperature (25°C) for 2 years, and the nose splints were weighed, measured, photographed, and observed for appearance. If the appearance of the nose splint after 2 years is unchanged compared to before placement, it is recorded as "no change", otherwise it is recorded as "change". If the size of the nose splint after 2 years is unchanged compared to before placement, it is recorded as "no change", otherwise it is recorded as "change". If the weight of the nose splint after 2 years is changed within ±2% compared to before placement, it is recorded as "no change", otherwise it is recorded as "change". The results are shown in Table 3.

[0098] Table 3

[0099]

[0100] It can be seen from the results in Table 3 above that the nose shaper provided by the present invention has good waterproofness and dimensional stability, so it does not require special packaging such as waterproofing during storage and transportation; and the shelf life is at least two years at room temperature.

[0101] The present invention has been described in detail above with reference to specific embodiments and exemplary examples. However, these descriptions should not be construed as limiting the present invention. Those skilled in the art will appreciate that various equivalent substitutions, modifications, or improvements may be made to the technical solutions and implementations of the present invention without departing from the spirit and scope of the present invention, all of which fall within the scope of the present invention. The scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A nose shaper, comprising a nose splint and a pressure relief pad; both the nose splint and the pressure relief pad are semi-fan-shaped thin sheet structures, wherein: The pressure relief pad is placed on the side where the nose splint contacts the nose; The nasal splint is made of a copolyester material, wherein the copolyester material comprises copolyester X and copolyester Y; The copolyester X comprises an aliphatic diacid segment, an aromatic diacid segment and a diol segment, wherein the diol segment comprises at least one diol segment with a cyclic structure segment and at least one aliphatic diol segment, and the molar percentage of the aromatic diacid segment in the total diacid segment is 25-60%; The copolyester Y comprises an aliphatic diacid segment, an aromatic diacid segment and at least one aliphatic diol segment, and the molar percentage of the aromatic diacid segment in the total diacid segments is 60-85%; The copolyester X and copolyester Y are each independently at least one of a random copolymer, an alternating copolymer, a block copolymer and a graft copolymer; The molecular weight range of the copolyester X and the copolyester Y is 20,000-200,000; Based on 100 parts by weight of the total copolyester, the copolyester X is 55 to 80 parts, and the copolyester Y is 20 to 45 parts; The molar percentage of the diol segment with a cyclic structure segment in the copolyester X is 5-25% of the total diol segment; The molar ratio of the total diacid segments to the total diol segments in the copolyester X is (0.9-1):1; The molar ratio of the total diacid segments to the total diol segments in the copolyester Y is (0.9-1):1; The aliphatic diacid is at least one selected from 1,4-butanedioic acid and 1,6-hexanedioic acid; The aromatic diacid is selected from terephthalic acid; The diol with a cyclic structure is selected from at least one of 1,4-cyclohexanedimethanol, isosorbide, and 2,2,4,4-tetramethyl-1,3-cyclobutanediol; The aliphatic diol is at least one selected from 1,3-propylene glycol, 1,4-butanediol and 1,6-hexanediol; The aliphatic diol segment in the copolyester X is different from the aliphatic diol segment in the copolyester Y.

2. The nose shaper according to claim 1, characterized in that The nose splint may or may not have a hole structure; and / or, The pressure relief pad may or may not have a porous structure.

3. The nose shaper according to claim 2, characterized in that The nose splint has a hole structure; and / or the pressure relief pad has a hole structure; The hole structure is distributed throughout the surface of the nose splint and / or the pressure relief pad, and the intervals between the hole structures are 1-10 mm; the pore diameter of the hole structure is 0.5-5 mm; and / or, The thickness of the nose splint is 0.5-5 mm; and / or, The thickness of the pressure relief pad is 0.1-2 mm.

4. The nose shaper according to claim 3, characterized in that The intervals between the hole structures are 2-4 mm; and / or, The pore structure has a pore diameter of 1-3 mm; and / or, The thickness of the nose splint is 1-3 mm; and / or, The thickness of the pressure relief pad is 0.5-1 mm.

5. The nose shaper according to claim 1, wherein: The material of the pressure relief pad is selected from at least one of rubber, sponge, thermoplastic elastomer, cloth, paper, gel, leather and plasticine.

6. The nose shaper according to claim 1, wherein: The copolyester X and the copolyester Y are each independently a random copolymer and / or a block copolymer; and / or the molecular weight of the copolyester X and the copolyester Y is in the range of 80,000-150,000.

7. The nose shaper according to claim 1, wherein: The aliphatic diol chain segment in the copolyester X is derived from 1,4-butanediol; and the aliphatic diol chain segment in the copolyester Y is derived from 1,3-propylene glycol and / or 1,6-hexanediol.

8. The nose shaper according to claim 1, wherein: Based on 100 parts by total weight of the copolyester X and the copolyester Y, 0.5 to 10 parts of fragrance are further included.

9. The nose shaper according to claim 8, characterized in that 1.5~8 parts of flavor.

10. The nose shaper according to claim 1, wherein The present invention further comprises 1 to 15 parts of a lubricant based on 100 parts by weight of the total weight of the copolyester X and the copolyester Y.

11. The nose shaper according to claim 10, wherein: 5~15 parts of lubricant.

12. The nose shaper according to claim 10, wherein The lubricant is selected from at least one of stearic acid, butyl stearate, oleamide, ethylene bisstearamide and low-density polyethylene.

13. A method for preparing the nose shaper according to any one of claims 1 to 12, comprising sequentially extruding, molding and / or cutting a copolyester material to obtain a nose splint of the nose shaper.

14. The method for preparing the nose shaper according to claim 13, wherein: The extrusion is melt extrusion; The extrusion temperature is 90-230°C; and / or, The molding method is injection molding and / or compression molding.

15. The method for preparing the nose shaper according to claim 14, characterized in that: The extrusion temperature is 110-170°C.

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