A method for preparing a foamed silicone breast form

Abstract

The application discloses a preparation method of foamed silica gel breast prosthesis, which comprises the following steps: pouring silica gel liquid into the cavity of a lower mold, laying gauze between the lower mold and an upper mold, closing the molds, and partially filling the silica gel liquid into the holes of the gauze; after the foaming of the silica gel liquid is completed, the molds are opened to obtain a breast prosthesis body, the gauze forms a supporting layer, and the supporting layer is arranged in the breast prosthesis body and / or on the surface of the breast prosthesis body; after the fabric is sewn with the breast prosthesis body, the foamed silica gel breast prosthesis is obtained; and the hole type of the gauze is a regular hexagon. The preparation method of the foamed silica gel breast prosthesis is prepared by using chemical foaming silica gel, the obtained foamed silica gel breast prosthesis has good supporting property and good hand feeling, does not need to be coated with a non-breathable TPU film like a traditional silica gel breast prosthesis, the foamed silica gel itself has tiny pores, the breathability of the foamed silica gel breast prosthesis is greatly increased, the weight is reduced, the weight bearing feeling of a wearer is reduced, and the comfort is improved.

Description

[0001] This application is a divisional application of the patent application with the application number 2020102773071, the application date of April 10, 2020, and the invention name of "foamed silica gel breast prosthesis and its preparation method". TECHNICAL FIELD

[0002] The present application relates to the technical field of breast prosthesis making, applied to the medical industry, such as human external repair, and in particular to a preparation method of a foamed silica gel breast prosthesis. BACKGROUND

[0003] Many breast cancer patients need to wear a breast prosthesis to present after mastectomy in order to maintain the same appearance as normal people in daily life. The breast prostheses on the market are mostly silicone gel materials combined with TPU (thermoplastic polyurethane elastomer rubber) film to form a prosthesis. Such silicone gel breast prostheses have poor air permeability; ordinary silicone gel breast prostheses have a high specific gravity, and the wearer feels heavy; the TPU film of ordinary silicone gel breast prostheses ages seriously after a long period of use, and a slight carelessness during use can cause the TPU bag to rupture; the TPU film of ordinary silicone gel breast prostheses will rupture if it encounters (sharp objects, nails during wearing, etc.).

[0004] There are also lightweight silicone breast prostheses on the market, which are generally two-thirds the weight of ordinary silicone gel breast prostheses, but the production cost is much higher than that of ordinary silicone gel breast prostheses, and they also need to be covered with TPU film, and the air permeability is still poor.

[0005] In addition, some commercially available lightweight breast prostheses are inexpensive, but have many shortcomings, such as cloth bags filled with cotton and sponge molds. The first type of breast prosthesis meets the conditions of lightness and air permeability, but the shape is very random, and the shape presentation is insufficient after the patient wears it; the second type of breast prosthesis has perfect shape presentation, but the sponge contains harmful ingredients to the human body, and long-term use can affect health. SUMMARY

[0006] Therefore, in order to overcome the defects of the prior art, the purpose of the present application is to provide a preparation method for preparing a breast prosthesis using foamed silica gel.

[0007] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0008] A foamed silica gel breast prosthesis, comprising a breast prosthesis body and a fabric covering the outside of the breast prosthesis body, the material of the breast prosthesis body is foamed silica gel, and a support layer is arranged in the breast prosthesis body and / or on the surface of the breast prosthesis body.

[0009] The breast prosthesis body prepared by using the chemical foaming silica gel has good support and good hand feeling, and does not need to be coated with the non-breathable TPU film like the traditional silica gel breast prosthesis, and the foaming silica gel itself has small pores, which greatly increases the breathability of the foaming silica gel breast prosthesis, reduces the weight, and is one fifth to one tenth of the weight of the ordinary silica gel breast prosthesis, reduces the weight bearing feeling of the wearer, and improves the wearing comfort. By arranging the support layer in the breast prosthesis body, the overall tear resistance is increased, and the service life is prolonged.

[0010] In some embodiments of the present application, the fabric is selected to be sandwich fabric, which is a fabric with a special three-dimensional mesh structure, has excellent breathability, and has a thickness range of 2-3 mm. The sandwich fabric is sewn and coated on the outside of the entire breast prosthesis body. When the patient wears it, the skin and the breast prosthesis are separated by a layer of breathable sandwich, so that the heat is discharged in time, and the whole chest will not be as hot as wearing a sponge bra.

[0011] Preferably, the breast prosthesis body includes a convex surface and a concave surface, and the support layer is attached to the concave surface. The concave surface is the side close to the human body, and the convex surface is the side away from the human body. The curvature of the convex surface is greater than that of the concave surface.

[0012] Preferably, the support layer is attached to one side of the breast prosthesis body and has an extension extending outward, and the extension is connected with the fabric. The extension is mainly used for fixed connection with the fabric to prevent the breast prosthesis body from deviating during use and causing discomfort. The extension can be selected to surround the entire foaming silica gel, or selected to surround several specific parts, such as the arc transition part. In some embodiments of the present application, the extension is a mesh screen with three parts, and the three parts of the mesh screen are located at the edge arc transition part of the foaming silica gel and form a triangle, which better plays a fixing role.

[0013] Preferably, the support layer is a mesh screen, and the pore size of the mesh screen is 0.5-1 mm. If the pore size is too large, the tear resistance is not good, and if the pore size is too small, the grammage will increase, causing the overall weight of the breast prosthesis to increase.

[0014] More preferably, the mesh screen has a hexagonal hole type. The hexagonal hole type has the following advantages: a. the hexagonal hole type is relatively material-saving and maximizes the space utilization, thereby reducing the material weight and making the product lighter; b. the hexagonal hole type has a larger contact range with the foamed silica gel, so that the mesh screen and the foamed silica gel are more tightly combined, and once the mesh screen is fixed, the breast form body is also fixed, and the mesh screen and the foamed silica gel will not be delaminated and fail after long-term use; c. the structure of a plurality of hexagonal holes is combined together, and the stress is evenly dispersed, and the strength is higher. Therefore, the mesh screen with the hexagonal hole type can save materials and ensure the connection between the mesh screen and the foamed silica gel while ensuring the structural strength.

[0015] More preferably, the mesh screen has a tensile strength of 80-90N in the warp direction and a tensile strength of 60-70N in the weft direction. The mesh screen has the following functions: one is to improve the tear resistance of the breast form body, and the other is to fix the position of the breast form body in the fabric after being sewn with the fabric. Therefore, a material with a certain range of tensile strength needs to be selected. If the tensile strength is too low, the overall tear resistance of the breast form body is poor, and the mesh screen and the sewing thread may be separated after being sewn with the fabric, thereby failing to achieve the above purpose.

[0016] In some embodiments of the present application, the mesh screen has a weight of 30-50g / m 2 , and the material is polyester.

[0017] Preferably, the breast form body is provided with a through hole penetrating the thickness direction of the breast form body, and the diameter of the through hole is 2-3mm, thereby further reducing the weight and increasing the air permeability, reducing the weight of the patient, and making the wearer not feel hot.

[0018] Preferably, the density of the breast form body is 0.1-0.15g / cm 3 , and the hardness of the breast form body is 20-25 degrees. The hardness is measured by using a LX-F type sponge hardness tester. The breast form body is formed by using foamed silica gel, and has a plurality of small pores inside, thereby being good in air permeability, low in weight, good in comfort, good in hand feeling, and good in support.

[0019] The present application also provides a preparation method of the foamed silica gel breast form body as described above, which comprises the following steps: pouring a silica gel liquid into a cavity of a lower mold, laying a mesh screen between the lower mold and an upper mold, closing the mold, demolding after the foaming of the silica gel liquid is completed, and obtaining a breast form body; and sewing the fabric with the breast form body to obtain the foamed silica gel breast form body.

[0020] Preferably, the method further comprises preparing the fabric into the curvature matching the breast prosthesis body: making a shaping mold consistent with the convex and concave curvature of the breast prosthesis body, heating the shaping mold to a set temperature, and then pressing the fabric upward or downward into the curvature consistent with the convex and concave of the breast prosthesis body.

[0021] In some embodiments of the present application, the preparation method of the foamed silicone breast prosthesis specifically comprises the following steps:

[0022] 1) Preparation of the breast prosthesis body:

[0023] A. After preheating the A and B components of the chemical foaming silicone to 25-30℃, mix them in a mass ratio of 1:1 to obtain a silicone liquid, pour the silicone liquid into a specific mold after stirring for 15-20s, and control the temperature of the mold to 25-30℃ in advance. The mold includes a lower mold and an upper mold. The lower mold is a concave mold with a cavity, and the upper mold is a convex mold with a protrusion. After the upper mold and the lower mold are combined, a mold cavity for forming is formed.

[0024] The chemical foaming silicone can be selected from existing commercially available products or the following formulation by weight:

[0025]

[0026] By selecting an environmentally friendly chemical foaming silicone to form the breast prosthesis body, the breast prosthesis body itself has good support and good hand feeling. Unlike traditional silicone gel breast prostheses, it does not need to be covered with a non-breathable TPU film. In addition, the dense punching and the tiny pores of the foamed silicone itself greatly increase the breathability of the foamed silicone breast prosthesis and reduce the weight. The reaction of the foamed glue releases hydrogen gas, which is safe and environmentally friendly, and never yellow, greatly improving the service life.

[0027] B. After laying the mesh between the upper mold and the lower mold, the upper mold and the lower mold are combined to make the silicone liquid foam and form in the mold cavity. The silicone liquid is removed from the mold cavity after reacting for 30 minutes. Because the mesh is tightly attached to the upper mold, the silicone liquid will partially fill the holes in the mesh. After foaming and forming, the mesh is attached to the side of the foamed silicone close to the upper mold.

[0028] C. Trim and punch the product after foaming in step B. The main purpose of trimming the mesh is to extend the edges of the mesh outward from the edges of the foamed silicone to form an extension for subsequent sewing with the fabric, ensuring that the breast prosthesis body does not shift during use. Punching is used to punch through holes in the breast prosthesis body to better allow air to pass through.

[0029] The edges of the mesh can extend 3-5mm outward from the breast prosthesis body to form an extension for sewing. The extension can be selected to surround the entire foamed silicone, or selected at several specific locations, such as the arc transition.

[0030] In some embodiments of the present application, the extension is a netting that retains three parts, and the three parts of the netting are just located at the edge arc transition of the foamed silica gel, and form a triangle, which better plays a fixing role.

[0031] 2) Preparation of the fabric:

[0032] In specific embodiments of the present application, the convex surface and the concave surface of the breast prosthesis body have different radii of curvature. The radius of curvature of the convex surface is greater than that of the concave surface. In order to better ensure the fit between the breast prosthesis body and the fabric, the fabric that fits with the convex surface and the concave surface needs to be shaped respectively to form different radii of curvature.

[0033] Specifically, first, a shaping mold consistent with the radii of curvature of the convex surface and the concave surface of the breast prosthesis body is made. Then, the fabric is cut to an appropriate size and laid flat and fixed. At the same time, the shaping mold is heated to a set temperature (180-190°C). The fabric is stationary, and the shaping mold is moved to press the fabric upward or downward, so that the fabric is completely fitted with the shaping mold and kept for 2-3 min. Then, the mold is removed, and the fabric has a radius of curvature consistent with that of the convex surface and the concave surface of the breast prosthesis body.

[0034] 3) Preparation of the foamed silica gel breast prosthesis:

[0035] The breast prosthesis body prepared in step 1) and the fabric prepared in step 2) are integrally sewn, and the edges are edge-wrapped to obtain the foamed silica gel breast prosthesis.

[0036] Due to the above technical solutions, compared with the prior art, the preparation method of the foamed silica gel breast prosthesis has the following advantages. The foamed silica gel breast prosthesis is prepared by using chemical foaming silica gel. The foamed silica gel breast prosthesis has good support and good hand feeling. Unlike traditional silica gel breast prostheses, it does not need to be coated with a non-breathable TPU film. The foamed silica gel itself has tiny pores, which greatly increases the breathability of the foamed silica gel breast prosthesis, reduces the weight, and is one-fifth to one-tenth of the weight of ordinary silica gel breast prostheses, thereby reducing the weight-bearing feeling of the wearer and improving the comfort of wearing. By arranging the support layer in the breast prosthesis body, the overall tear resistance is increased, and the service life is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0038] Figure 1 It is a cross-sectional view of the foamed silica gel breast prosthesis in the preferred embodiment of the present application.

[0039] Figure 2 Front view of the foamed silicone breast prosthesis in the preferred embodiment of the present application;

[0040] Figure 3 Schematic view of the foamed silicone breast prosthesis before the mold is closed in the preferred embodiment of the present application;

[0041] Figure 4 Schematic view of the foamed silicone breast prosthesis when the mold is closed in the preferred embodiment of the present application;

[0042] Figure 5 Front view of the foamed silicone breast prosthesis combined with the mesh in the preferred embodiment of the present application;

[0043] Figure 6 Cross-sectional view of the foamed silicone breast prosthesis combined with the mesh in the preferred embodiment of the present application;

[0044] Figure 7 Front view of the foamed silicone breast prosthesis after the mesh is trimmed in the preferred embodiment of the present application;

[0045] Figure 8 Front view of the breast prosthesis body after punching in the preferred embodiment of the present application;

[0046] Figure 9 Cross-sectional view of the breast prosthesis body after punching in the preferred embodiment of the present application;

[0047] Figure 10 Schematic view of the convex fabric shaping in the preferred embodiment of the present application;

[0048] Figure 11 Schematic view of the concave fabric shaping in the preferred embodiment of the present application;

[0049] Wherein: mesh-1, extension-11, sandwich fabric-2, convex fabric-21, concave fabric-22, breast prosthesis body-3, through hole-31, upper mold-41, lower mold-42, silicone liquid-5, clamp-6, first shaping mold-71, second shaping mold-72, foamed silicone breast prosthesis-8, sewn edge overlock-9. DETAILED DESCRIPTION

[0050] In order to make the technical scheme of the present application better understood by the person skilled in the art, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the present application.

[0051] Example 1: Foam silicone breast prosthesis

[0052] Referring to the drawings, Figures 1-11 the foam silicone breast prosthesis 8 of the present embodiment comprises a breast prosthesis body 3 and a sandwich fabric 2 covering the outside of the breast prosthesis body 3. The breast prosthesis body 3 is made of foam silicone, and a support layer formed by a mesh 1 is arranged on the surface of the breast prosthesis body 3. The breast prosthesis body 3 is provided with a through hole 31 penetrating the thickness direction thereof, and the diameter of the through hole 31 is 2-3 mm, which further reduces the weight of the breast prosthesis and increases the air permeability, thereby reducing the weight bearing of the patient and making the wearer not feel hot.

[0053] The sandwich fabric 2 is a fabric with a special three-dimensional mesh structure, which has excellent air permeability and a thickness of 2-3 mm. The sandwich fabric 2 is sewn and covers the outside of the entire breast prosthesis body 3. When the patient wears it, the skin and the breast prosthesis are separated by a layer of breathable sandwich fabric 2, so that the heat is discharged in time and the entire chest does not feel hot like wearing a sponge bra.

[0054] The breast prosthesis body 3 comprises a convex surface and a concave surface, wherein the concave surface is the side close to the human body, and the convex surface is the side away from the human body, and the curvature of the convex surface is greater than that of the concave surface. As shown in the drawings, Figures 7-8 the mesh 1 in the present embodiment is attached to the concave surface and has an extension 11 extending outward. The extension 11 is mainly used for fixed connection with the fabric to prevent the breast prosthesis body 3 from deviating during use, causing discomfort. The extension 11 can be selected to surround the entire foam silicone, or selected at several specific positions, such as the arc transition position. In the present embodiment, the extension 11 is a mesh 1 with three parts retained, and the three parts of the mesh 1 are located at the edge arc transition position of the foam silicone, and form a (isosceles) triangle. The triangle is more stable and the force is dispersed, which better plays a fixing role.

[0055] The mesh 1 selected in the present embodiment has a pore size of 0.5-1 mm, and the pore type is regular hexagon. If the pore size is too large, the tear resistance is not good, and if the pore size is too small, the grammage will increase, causing the overall weight of the breast prosthesis to increase. The pore size is selected as regular hexagon, which has the following advantages: a. regular hexagon saves materials and maximizes space utilization, thereby reducing the grammage of the materials, making the prepared product lighter. The grammage of the mesh 1 in the present embodiment is 30-50 g / m2 b. The contact area between the regular hexagon and the foamed silica gel is larger, so that the combination between the screen mesh 1 and the foamed silica gel is more compact. Once the screen mesh 1 is fixed, the breast prosthesis body 3 is also fixed, and the screen mesh 1 and the foamed silica gel will not be delaminated and fail after long-term use; c. The structure of many regular hexagons is combined together, the stress is evenly dispersed, and the strength is higher. Therefore, the screen mesh 1 with regular hexagonal holes can save materials while ensuring the structural strength and ensuring the connection between the screen mesh 1 and the foamed silica gel.

[0056] In order to better play the supporting effect and tear-resistant effect, the longitudinal tear strength of the screen mesh 1 in the embodiment is selected to be 80-90N, and the transverse tear strength is 60-70N. The screen mesh 1 has the effect of improving the tear resistance of the breast prosthesis, and on the other hand, it is used together with the fabric to sew and fix the position of the breast prosthesis body 3 in the fabric, so the material with a certain range of tear strength needs to be selected. If the tear strength is too low, on the one hand, the overall tear resistance of the breast prosthesis is poor, and on the other hand, after the screen mesh 1 is sewn together with the fabric, it is also possible that the screen mesh 1 and the sewing thread are separated, so that the above purpose cannot be achieved.

[0057] The density of the breast prosthesis body 3 in the embodiment is 0.1-0.15g / cm 3 The hardness of the breast prosthesis body 3 is 20 degrees. The hardness is measured by a LX-F type sponge hardness tester. The breast prosthesis body 3 is formed by foamed silica gel, which has many tiny pores inside, not only good air permeability, but also low weight, good wearing comfort, good hand feeling and good support. For example, a 3# silicone gel breast prosthesis and a foamed silica gel breast prosthesis in the embodiment, the traditional silicone gel breast prosthesis is 245g, and the breast prosthesis body in the embodiment is only 30g, and the foamed silica gel breast prosthesis after sewing the sandwich fabric is only 36g.

[0058] The breast prosthesis body 3 prepared by using chemical foamed silica gel in the embodiment has good support and good hand feeling, and does not need to be coated with a non-breathable TPU film like a traditional silicone gel breast prosthesis. The foamed silica gel itself has tiny pores, which greatly increases the air permeability of the foamed silica gel breast prosthesis, reduces the weight, which is one fifth to one tenth of the ordinary silicone gel breast prosthesis, reduces the weight of the wearer, and improves the wearing comfort. By providing a support layer in the breast prosthesis body 3, the overall tear resistance is increased, and the service life is prolonged. The sandwich fabric 2 selected also has good air permeability, and cooperates with the breast prosthesis body 3 to provide good wearing experience.

[0059] Preparation method of the foamed silica gel breast prosthesis

[0060] As shown in Figures 1-11 , the embodiment provides a preparation method of the foamed silica gel breast prosthesis 8 in embodiment 1, which specifically includes the following steps:

[0061] 1) Preparation of the breast prosthesis body:

[0062] A. After preheating the A, B components of the chemical foaming silica gel to 25-30℃, mix them in a mass ratio of 1:1 to obtain silica gel liquid 5, pour into a specific mold after stirring for 15-20s, and control the temperature of the mold to 25-30℃ in advance.

[0063] The mold includes a lower mold 42 and an upper mold 41. The lower mold 42 is a concave mold with a cavity, and the upper mold 41 is a convex mold with a protrusion. After the upper mold 41 and the lower mold 42 are combined, a mold cavity for molding is formed.

[0064] The chemical foaming silica gel liquid can be selected from existing commercially available products or the following formulation:

[0065]

[0066] By selecting an environmentally friendly chemical foaming silica gel to form the breast prosthesis body 3, the breast prosthesis body 3 itself has good support and good hand feeling. Unlike traditional silica gel breast prostheses, it does not need to be covered with a non-breathable TPU film. In addition, the dense punching and the tiny pores of the foaming silica gel itself greatly increase the breathability of the foaming silica gel breast prosthesis 8 and reduce the weight. The reaction of the foaming glue releases hydrogen gas, which is safe and environmentally friendly, and never yellow, greatly improving the service life.

[0067] B. After laying the mesh 1 between the upper mold 41 and the lower mold 42, the upper mold 41 and the lower mold 42 are combined, and the silica gel liquid 5 is foamed and formed in the mold cavity. After the silica gel liquid 5 reacts in the mold cavity for 30 minutes, the mold is removed. Because the mesh 1 is tightly attached to the upper mold 41, the silica gel liquid 5 will partially fill the holes in the mesh 1. After foaming and forming, the mesh 1 is attached to the side of the foaming silica gel close to the upper mold 41.

[0068] C. Trim and punch the product after foaming in step B. The main purpose of trimming the mesh 1 is to extend the edges of the mesh 1 outward from the edges of the foaming silica gel to form an extension 11, which is used for subsequent sewing with the fabric to ensure that the breast prosthesis body 3 does not shift during use. Punching is used to punch through holes 31 in the breast prosthesis body 3 to better allow air to pass through.

[0069] The edge of the netting 1 can be extended 3mm outwardly from the breast body 3 to form an extension 11 to facilitate sewing. The extension 11 can be selected to extend around the entire foam silica gel, or selected to extend around specific locations, such as the arc transition locations, and the width of the extension matches the width of the subsequent sewing line to prevent obstruction during sewing. In this embodiment, the extension 11 is netting 1 that is retained in three portions, and the three portions of netting 1 are located at the arc transition locations of the edges of the foam silica gel, and form a (isosceles) triangle, which is more stable and force-dispersive, and better serves the function of fixation.

[0070] 2) Preparation of the fabric:

[0071] In this embodiment, the convexity and concavity of the breast body 3 are not the same. The convexity is greater than the concavity, and in order to better ensure the fit between the breast body 3 and the fabric, the fabric that fits the convexity and the concavity needs to be shaped to form different convexities and concavities, forming a convex fabric 21 that matches the convexity of the breast body 3 and a concave fabric 22 that matches the concavity of the breast body 3.

[0072] Specifically, first, a first shaping mold 71 that matches the convexity of the breast body 3 and a second shaping mold 72 that matches the concavity of the breast body 3 are made, then the fabric is cut to the appropriate size and fixed flat with a clamp 6, and the first shaping mold 71 and the second shaping mold 72 are heated to a set temperature (180-190°C). The fabric is fixed in place, and the shaping mold is moved to lift the fabric, so that the fabric is completely fitted to the shaping mold and held for 2-3 minutes, then the mold is removed, and the fabric forms a convex fabric 21 that matches the convexity of the breast body 3 and a concave fabric 22 that matches the concavity of the breast body 3. As shown in FIG. 4, the vertical upward arrows on both sides of the shaping mold are the moving direction of the shaping mold. Figures 10-11

[0073] 3) Preparation of the foam silica gel breast:

[0074] The breast body 3 prepared in step 1) and the fabric prepared in step 2) are integrally sewn, and the edges are hemmed to form a sewn edge hem 9, and a foam silica gel breast 8 is obtained. During sewing, the concave fabric 22, the breast body 3, and the convex fabric 21 are stacked in that order and then sewn.

[0075] ​The environmental protection chemical foaming silica gel is selected to form the body of the artificial breast, which has good support and good hand feeling, and does not need to be coated with the non-breathable TPU film like the traditional silica gel artificial breast. In combination with the dense punching and the small pores, the breathability of the foaming silica gel artificial breast is greatly increased, and the weight is reduced. The foaming glue reaction used in the application releases hydrogen, which is safe and environmental protection, and never yellow, so that the service life is greatly improved. The chemical foaming silica gel is foamed into the required shape through a mold, and then is sewn together, and is combined with the breathable sandwich cloth, so that the lightweight and breathable effect is achieved without the TPU film coating, and the weight is generally one fifth to one tenth of the weight of the ordinary silica gel artificial breast.

[0076] The above examples are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable the person skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A method of manufacturing a foamed silicone breast prosthesis, characterized in that, The method comprises the following steps: a silica gel liquid comprises A component and B component, when preparing, the A component and the B component are preheated to 25-30 DEG C, then mixed according to the mass ratio of 1:1 to obtain the silica gel liquid, after stirring for 15-20 s, the silica gel liquid is poured into the cavity of the lower mold, the upper mold and the lower mold are preheated to 25-30 DEG C; A net screen is laid between the lower mold and the upper mold, the mold is closed, the silica gel liquid is partially filled in the holes of the net screen, the mold is opened after the foaming of the silica gel liquid is completed, and the breast prosthesis body is obtained, the net screen forms a support layer, and the support layer is arranged in the breast prosthesis body; the hole type of the net screen is a regular hexagon; The breast prosthesis body is trimmed and punched, the trimming is used for trimming the edges of the net screen, so that the edges of the net screen extend outward from the edges of the foamed silica gel to form extension parts, and the extension parts are used for subsequent sewing with the fabric; the punching is used for forming through holes penetrating through the thickness direction of the breast prosthesis body; the extension parts are the net screens at three positions of the arc transition of the edges of the foamed silica gel, the net screens at the three positions form a triangle, and the foamed silica gel breast prosthesis is obtained after the fabric is sewn with the extension parts. The mesh screen has a pore size of 0.5mm to 1mm; the warp tear strength of the mesh screen is 80 to 90N, the weft tear strength is 60 to 70N; the mesh screen has a grammage of 30 to 50g / m 2 The mesh screen is made of polyester.

2. The production method according to claim 1, characterized by, The breast prosthesis body comprises a convex surface and a concave surface, and the curvature of the convex surface is greater than that of the concave surface; and the support layer is attached to the concave surface.

3. The preparation method according to claim 2, characterized in that, The preparation method further comprises preparing the fabric into an arc matching the breast prosthesis body: a shaping mold with the same curvature as the convex surface and the concave surface of the breast prosthesis body is prepared, and the fabric is top or bottom pressed into the arc matching the convex surface and the concave surface of the breast prosthesis body after the shaping mold is heated to a set temperature.

4. The method of claim 1, wherein, The lower mold is a concave mold with a cavity, and the upper mold is a convex mold with a protrusion, and the mold cavity for forming is formed after the upper mold and the lower mold are combined.

5. The preparation method according to claim 1, characterized in that, The diameter of the through hole is 2-3 mm.

6. The method of any one of claims 1-5, wherein, The fabric is sandwich cloth, and the thickness of the fabric is 2-3 mm.

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