Multi-layer three-dimensional fat breast enlarging method
Through the multi-level three-dimensional fat breast augmentation method, fat is filled in the subpectoralis major muscle, submammary gland and subcutaneous layer respectively, which solves the problems of uneven fat distribution and low survival rate in traditional methods, achieves natural simulation of breast shape and improves patient satisfaction.
Patent Information
- Application Number
- CN202510970010.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-15
- Publication Date
- 2025-09-12
AI Technical Summary
Traditional autologous fat breast augmentation methods have problems such as uneven fat distribution, nodule formation, low fat survival rate, inability to improve breast sagging and morphological differences, and are difficult to meet the diverse needs of patients.
A multi-layered three-dimensional fat breast augmentation method is used to fill appropriate amounts of pure fat under the pectoralis major muscle, under the mammary gland, and under the skin. Combined with preoperative planning, fat acquisition and processing, and postoperative care, this ensures even distribution and safety of the fat.
It improves the fat survival rate, achieves a breast shape that is closer to the natural state, improves sagging, enhances the natural feel and patient satisfaction, and meets personalized breast augmentation needs.
Smart Images
Figure CN120616718A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of breast augmentation, in particular to a multi-layer three-dimensional fat breast augmentation method. Background Art
[0002] In the field of cosmetic surgery, breast augmentation is a common option for many women seeking to enhance their charm and confidence. Traditional breast augmentation methods primarily include implants and autologous fat augmentation. While implants can significantly increase breast volume, they carry risks such as implant migration and capsular contracture, and the postoperative appearance can be less natural.
[0003] Autologous fat breast augmentation is becoming increasingly popular with patients because it uses the patient's own fat tissue, has advantages such as no rejection and a natural feel. However, traditional autologous fat breast augmentation techniques usually only perform fat filling in a single layer or a limited number of layers, which has many disadvantages. On the one hand, the uneven distribution of fat can easily lead to localized fat accumulation, forming nodules, which affects the appearance and feel of the breasts. On the other hand, single-layer filling makes the way for fat cells to obtain nutrition relatively single, limiting the survival rate of fat. A large amount of non-surviving fat may be absorbed or liquefied, affecting the durability of the breast augmentation effect.
[0004] For patients with mild breast sagging, traditional autologous fat breast augmentation methods are difficult to effectively improve. Simply increasing breast volume cannot adjust the position and shape of the breasts, and cannot meet the needs of these patients for breast lift and shape improvement. In addition, because the physiological and anatomical structure of the breast is not fully considered, the shape of the breast after augmentation still differs from the natural breast, and it does not fully meet the aesthetic and physiological and anatomical requirements of the human body, resulting in low patient satisfaction. Therefore, a multi-layered three-dimensional fat breast augmentation method is proposed. Summary of the Invention
[0005] In view of this, the present invention provides a multi-layer three-dimensional fat breast augmentation method to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.
[0006] The technical solution of the present invention is achieved as follows: a multi-layer three-dimensional fat breast augmentation method, comprising the following steps:
[0007] S1. Preoperative planning and preparation: in-depth communication with the patient to understand her breast augmentation expectations, medical history, etc., and conduct a comprehensive physical and breast specialist examination and imaging examination to provide a basis for the surgical plan;
[0008] S2. Fat harvesting and processing: selecting the donor area based on the patient's fat distribution, assessing the amount that can be harvested, marking the suction range, and cleaning and preparing the donor area;
[0009] S3, multi-layer fat filling, evenly filling the appropriate amount of pure fat in different layers;
[0010] S4. Postoperative care and observation: After completing multi-level fat filling, carefully check each incision to promptly detect and deal with possible postoperative complications to ensure the patient's life safety.
[0011] Furthermore, in said S1, detailed face-to-face communication is conducted with the patient to fully understand her expectations for breast shape, including breast size, fullness, firmness and other specific demands. At the same time, the patient's past medical history, surgical history, drug allergy history and other key information are patiently listened to, and a comprehensive physical examination is arranged for the patient, covering blood routine, coagulation function, liver and kidney function, infectious disease screening and other items to ensure that the patient's physical condition is suitable for surgery. In addition, a focus is placed on specialized examinations of the breasts, accurately measuring the size, position, sagging, skin elasticity and other data of the breasts, and evaluating the health of the breast tissue. With the help of breast ultrasound or MRI I examination, to further understand the internal structure of the breast, to check whether there is breast disease, and provide a detailed basis for the formulation of the surgical plan; assist the patient to take a standing position so that the breast is in a natural drooping state to accurately simulate the breast shape under normal physiological conditions, and use a special skin marking pen to carefully mark the center position of the nipple and areola, as well as important anatomical landmarks such as the inframammary fold and the anterior axillary line on the surface of the breast; at the same time, based on the results of the preoperative evaluation, preliminarily plan the approximate areas of fat filling in three levels: under the pectoralis major muscle, under the breast, and subcutaneous, and mark the areas that need to be adjusted. Based on the patient's body fat distribution, comprehensive consideration is given to factors such as fat quality, donor area concealment, and postoperative recovery. Usually, the waist, abdomen, and thigh (the posterior and lateral sides are better, the medial side is second) are selected as fat donor areas. The thickness, softness, and available amount of fat in the donor area are evaluated to meet the needs of breast filling. In the selected donor area, the range of fat suction is marked. At the same time, the donor area is cleaned and the skin is prepared.
[0012] Further preferably, in said S2, a tumescent anesthesia technique is used to inject an appropriate amount of tumescent fluid into the donor area, the dosage is adjusted according to the patient's weight and the range of the donor area, and infiltration injection is performed at multiple points and multiple planes in the donor area so that the tumescent fluid is evenly distributed in the subcutaneous fat layer, thereby achieving the purpose of local anesthesia, reducing bleeding, and making the fat cells swell and easy to aspirate. During the injection process, the patient's reaction is closely observed to ensure the anesthesia effect and safety. Within the marked range of the donor area, a hidden area is selected, such as the umbilicus of the abdomen, the gluteal groove on the back of the thigh, the inguinal fold on the front, etc., and 2-3 tiny incisions of about 0.5-1 cm in length are made. A liposuction needle connected to a negative pressure suction device is inserted into the subcutaneous fat layer through the incision, and fat aspiration is performed in a fan-shaped or multi-tunnel manner in the order from deep to shallow and from proximal to distal. During the operation, the liposuction needle is kept moving smoothly and the aspiration pressure is controlled at -0.06--0.0 8MPa, avoid excessive or uneven suction that may cause unevenness in the donor area. At the same time, pay attention to the color and properties of the extracted fat to ensure that the quality of the obtained fat is good. Collect the aspirated fat tissue in a sterile container, filter it through a filter to remove impurities such as blood, swelling fluid and fibrous connective tissue. Transfer the filtered fat to a centrifuge tube and centrifuge it at 1500 rpm for 1 minute to stratify the fat. After centrifugation, the upper layer is oil, the lower layer is swelling fluid and broken fat cells, and the middle layer is relatively pure fat particles. Carefully remove the upper layer of oil and the lower layer of liquid, and retain the pure fat in the middle. Rinse the purified fat repeatedly with saline to further remove residual impurities and broken cells. After flushing, transfer an appropriate amount of fat to a special syringe according to the amount of fat required for the operation, and adjust the uniformity of the fat particles.
[0013] Further preferably, in S3, the patient takes a supine position, and after routine disinfection and draping, for subpectoral filling, an 8mm small incision is made about 2cm above the intersection of the nipple level and the anterior axillary line. Through the incision, a 2.0mm diameter filling needle is used to find the lateral edge of the pectoralis major muscle, pass through the marginal tissue to reach the subpectoralis major space, and perform a small dose of tumescent anesthesia and hydrodissection, mainly for forming a suitable cavity in the lower extreme quadrant of the breast. During the separation process, careful operation is performed to avoid damaging the pectoralis major fascia, ensuring that the size and shape of the cavity can evenly accommodate the filled fat. A 5m spiral syringe filled with pure fat is connected to a dedicated 2.5mm diameter fat filling needle, and fat injection is also performed in a fan-shaped distribution manner. The injection order can start from the inframammary fold, upward to the level of the nipple surface projection, and evenly fill the inside and outside, so that the fat is evenly distributed under the pectoralis major muscle, providing strong support for the breast. The amount of subpectoral filling accounts for 40%-50% of the total filling amount.
[0014] For submammary filling, make an incision of about 8mm in length at the intersection of the areola edge or the vertical line of the clavicle midline and the submammary fold. Through the incision, use a fine filling needle with a diameter of 2.0mm to disperse a small dose of swelling anesthesia water in the gap between the mammary gland and the pectoralis major fascia, and in the cavity between the upper surface of the mammary gland and the subcutaneous tissue to form a suitable cavity. During the separation process, operate carefully to avoid damaging the mammary tissue and the pectoralis major fascia, and ensure that the size and shape of the cavity can evenly accommodate the filled fat. Connect the 5m spiral syringe filled with pure fat to the dedicated 2.0mm diameter fat filling needle and insert it through the incision. Enter the separated submammary cavity and follow the order from the outside to the inside of the breast, from the upper quadrant to the nipple and then to the lower quadrant to avoid the appearance of large nodules after filling, so as to make the breast augmentation effect more lasting and stable. Inject fat slowly and evenly in a fan-shaped distribution. During the injection process, withdraw the needle while injecting to maintain the uniformity of fat filling and avoid local accumulation. The filling amount is determined according to the patient's breast foundation and the expected effect, accounting for 30%-40% of the total filling amount. At the same time, during the injection process, gently press the surface of the breast with your fingers to feel the fat distribution, and adjust the injection direction and dosage in time to ensure a natural filling effect.
[0015] Preparation of the subcutaneous layer: Based on the incision at the edge of the areola or the inframammary fold, the filling needle is inserted into the subcutaneous fat layer, and a sneak separation is performed in the shallow subcutaneous layer to form multiple tiny tunnels, creating conditions for the uniform distribution of fat. The remaining pure fat is slowly injected into the subcutaneous layer using a multi-tunnel, micro-injection method. During the injection, the filling is performed radially from the edge of the breast to the center, so that the fat is evenly spread under the skin, improving the flatness and fullness of the breast surface. The amount of subcutaneous filling accounts for 10%-20% of the total filling amount. During the filling process, the changes in the skin surface should be closely observed to avoid local unevenness or fat accumulation.
[0016] Further preferably, in said S4, after completing the multi-layer fat filling, each incision is carefully checked to ensure that there is no active bleeding, and the incisions are sutured layer by layer with absorbable sutures. During the suturing process, attention is paid to aligning the skin edges to reduce scar formation. After suturing, the incision surface is covered with sterile gauze, and the breast is moderately pressure-bandaged with a chest strap. After the operation, the patient is sent to the recovery room or ward, and vital signs, including body temperature, blood pressure, heart rate, respiration, etc., are closely monitored. Records are recorded every 15-30 minutes until the patient's vital signs are stable. The patient's state of consciousness and the presence of bleeding or exudate on the wound dressing are observed. If there is any abnormality, it is promptly handled, and the breast shape is observed regularly. The doctor should check the shape, size, skin color and temperature of the breast to evaluate the effect of fat filling, pay attention to whether there is swelling, increased pain, nodule formation, etc. in the breast. If there is any abnormality, perform ultrasound examination in time to determine whether there are complications such as fat liquefaction and hematoma, and take corresponding treatment measures. Inform the patient that they need to ensure adequate rest after surgery, avoid strenuous exercise and excessive abduction and lifting of the upper limbs, inform the patient to keep the wound clean and dry, avoid getting it wet, change the wound dressing regularly according to the doctor's orders, and instruct the patient to return for a follow-up visit on time at different time points such as 1 week, 1 month, 3 months, and 6 months after surgery so that the doctor can understand the fat survival, breast recovery, and whether there are any complications.
[0017] The embodiment of the present invention adopts the above technical solution, which has the following advantages:
[0018] First, this method fills the breasts with appropriate amounts of pure fat at the subpectoralis major, submammary gland, and subcutaneous levels, allowing the fat to be more evenly distributed across these layers. This even distribution provides fat cells with a wider range of nutrient access, increases the contact area between fat and surrounding tissue, and significantly improves fat survival. Compared to traditional methods, it significantly reduces fat absorption and liquefaction, avoids the appearance of large nodules after filling, and ensures a more lasting and stable breast augmentation effect.
[0019] Second, multi-layered filling simulates the natural anatomy of the breast, making the filled breast shape closer to its natural state. Subpectoralis major filling provides strong support and improves mild breast sagging; submammary filling increases breast fullness; and subcutaneous filling further adjusts the flatness of the breast surface, making the overall shape of the breast more rounded and upright, conforming to human aesthetic standards and improving patient satisfaction with breast appearance.
[0020] Third, because the fat is evenly distributed across different layers, the breast texture is more natural and feels more realistic. This avoids the localized hardness or unevenness that may result from traditional single-layer filling, allowing patients to experience a more natural, softer breast feel after surgery, improving their self-esteem and quality of life.
[0021] Fourth, it can be adjusted to suit the individual differences and specific needs of different patients. Whether simply pursuing breast enlargement or looking to increase breast size while also improving breast sagging, this can be achieved by properly allocating the amount of fat grafting at each layer. This personalized approach greatly meets the diverse needs of different patients for breast augmentation effects, improving patient satisfaction and the success rate of the surgery.
[0022] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0024] Figure 1 Flow chart of the method of the present invention. DETAILED DESCRIPTION
[0025] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be considered as illustrative in nature and not restrictive.
[0026] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.
[0027] like Figure 1 As shown, the embodiment of the present invention provides a multi-layer three-dimensional fat breast augmentation method, comprising the following steps:
[0028] S1. Preoperative planning and preparation: in-depth communication with the patient to understand her breast augmentation expectations, medical history, etc., and conduct a comprehensive physical and breast specialist examination and imaging examination to provide a basis for the surgical plan;
[0029] S2. Fat harvesting and processing: selecting the donor area based on the patient's fat distribution, assessing the amount that can be harvested, marking the suction range, and cleaning and preparing the donor area;
[0030] S3, multi-layer fat filling, evenly filling the appropriate amount of pure fat in different layers;
[0031] S4. Postoperative care and observation: After completing multi-level fat filling, carefully check each incision to promptly detect and deal with possible postoperative complications to ensure the patient's life safety.
[0032] In one embodiment, in S1, detailed face-to-face communication is conducted with the patient to fully understand her expectations for breast shape, including specific demands such as breast size, fullness, and firmness. At the same time, the patient's past medical history, surgical history, and drug allergy history are patiently listened to, and a comprehensive physical examination is arranged for the patient, covering blood routine, coagulation function, liver and kidney function, infectious disease screening and other items to ensure that the patient's physical condition is suitable for surgery. In addition, a focus is placed on specialized examinations of the breasts, accurately measuring data such as breast size, position, sagging, and skin elasticity, and evaluating the health of breast tissue. With the help of breast ultrasound or MRI examinations, the internal structure of the breast is further understood to rule out the presence of breast diseases, provide a detailed basis for the formulation of surgical plans, and assist patients in making standing decisions. The breast is positioned so that it is in a natural drooping state to accurately simulate the breast shape under daily physiological conditions. A special skin marking pen is used to carefully mark the center position of the nipple and areola, as well as important anatomical landmarks such as the inframammary fold and the anterior axillary line on the surface of the breast. At the same time, based on the results of the preoperative evaluation, the approximate areas of fat filling under the pectoralis major muscle, under the mammary gland and under the skin are preliminarily planned, and the areas that need to be adjusted are marked. According to the patient's body fat distribution, comprehensive consideration is given to factors such as fat quality, donor area concealment and postoperative recovery. Usually, the abdomen, inner thigh or buttocks are selected as the fat donor area. The thickness, softness and available amount of fat in the donor area are evaluated to meet the needs of breast filling. In the selected donor area, the range of fat suction is marked. At the same time, the donor area is cleaned and the skin is prepared.
[0033] In one embodiment, in S2, a tumescent anesthesia technique is used to inject an appropriate amount of tumescent fluid into the donor area. The dose is adjusted according to the patient's weight and the range of the donor area. Infiltration injection is performed at multiple points and multiple planes in the donor area to evenly distribute the tumescent fluid in the subcutaneous fat layer, thereby achieving the purpose of local anesthesia, reducing bleeding, and making the fat cells swell and easy to aspirate. The patient's reaction is closely observed during the injection process to ensure the anesthesia effect and safety. A hidden area is selected within the marked range of the donor area, such as the umbilicus of the abdomen, the gluteal groove on the back of the thigh, and the inguinal fold on the front. 2-3 tiny incisions of about 0.5-1 cm in length are made, and a liposuction needle connected to a negative pressure suction device is inserted into the subcutaneous fat layer through the incision. Fat is aspirated in a fan-shaped or multi-tunnel manner in the order from deep to shallow and from proximal to distal. During the operation, the liposuction needle is kept in steady movement and the aspiration pressure is controlled between -0.06 and -0.0 8MPa, avoid excessive or uneven suction that may cause unevenness in the donor area. At the same time, pay attention to the color and properties of the extracted fat to ensure that the quality of the obtained fat is good. Collect the aspirated fat tissue in a sterile container, filter it through a filter to remove impurities such as blood, swelling fluid and fibrous connective tissue. Transfer the filtered fat to a centrifuge tube and centrifuge it at 1500 rpm for 1 minute to stratify the fat. After centrifugation, the upper layer is oil, the lower layer is swelling fluid and broken fat cells, and the middle layer is relatively pure fat particles. Carefully remove the upper layer of oil and the lower layer of liquid, and retain the pure fat in the middle. Rinse the purified fat repeatedly with saline to further remove residual impurities and broken cells. After flushing, transfer an appropriate amount of fat to a special syringe according to the amount of fat required for the operation, and adjust the uniformity of the fat particles.
[0034] In one embodiment, in S3, the patient is placed in a supine position, and after routine disinfection and draping, a small 8mm incision is made approximately 2cm above the intersection of the nipple and the anterior axillary line. Through the incision, a 2.0mm diameter filling needle is used to find the lateral edge of the pectoralis major muscle, penetrate the marginal tissue to reach the subpectoralis major space, and perform a small dose of tumescent anesthesia and hydrodissection. A suitable cavity is formed mainly in the lower extreme quadrant of the breast. During the dissection process, careful operation is performed to avoid damaging the pectoralis major fascia and ensure that the size and shape of the cavity can evenly accommodate the injected fat. A 5m spiral syringe filled with pure fat is connected to a dedicated 2.5mm diameter fat filling needle. Fat is also injected in a fan-shaped distribution. The injection sequence can be started from the inframammary fold and upward to the level of the nipple surface projection, filling evenly inside and outside, so that the fat is evenly distributed under the pectoralis major muscle to provide strong support for the breast. The amount of subpectoralis major filling accounts for 40%-50% of the total filling volume.
[0035] For submammary filling, make an incision of about 8mm in length at the intersection of the areola edge or the vertical line of the clavicle midline and the submammary fold. Through the incision, use a fine filling needle with a diameter of 2.0mm to disperse a small dose of swelling anesthesia water in the gap between the mammary gland and the pectoralis major fascia, and in the cavity between the upper surface of the mammary gland and the subcutaneous tissue to form a suitable cavity. During the separation process, operate carefully to avoid damaging the mammary tissue and the pectoralis major fascia, and ensure that the size and shape of the cavity can evenly accommodate the filled fat. Connect the 5m spiral syringe filled with pure fat to the dedicated 2.0mm diameter fat filling needle and insert it through the incision. Enter the separated submammary cavity and follow the order from the outside to the inside of the breast, from the upper quadrant to the nipple and then to the lower quadrant to avoid the appearance of large nodules after filling, so as to make the breast augmentation effect more lasting and stable. Inject fat slowly and evenly in a fan-shaped distribution. During the injection process, withdraw the needle while injecting to maintain the uniformity of fat filling and avoid local accumulation. The filling amount is determined according to the patient's breast foundation and the expected effect, accounting for 30%-40% of the total filling amount. At the same time, during the injection process, gently press the surface of the breast with your fingers to feel the fat distribution, and adjust the injection direction and dosage in time to ensure a natural filling effect.
[0036] Preparation of the subcutaneous layer: Based on the incision at the edge of the areola or the inframammary fold, the filling needle is inserted into the subcutaneous fat layer, and a sneak separation is performed in the shallow subcutaneous layer to form multiple tiny tunnels, creating conditions for the uniform distribution of fat. The remaining pure fat is slowly injected into the subcutaneous layer using a multi-tunnel, micro-injection method. During the injection, the filling is performed radially from the edge of the breast to the center, so that the fat is evenly spread under the skin, improving the flatness and fullness of the breast surface. The amount of subcutaneous filling accounts for 10%-20% of the total filling amount. During the filling process, the changes in the skin surface should be closely observed to avoid local unevenness or fat accumulation.
[0037] In one embodiment, in S4, after completing the multi-layer fat filling, each incision is carefully checked to ensure that there is no active bleeding, and the incisions are sutured layer by layer using absorbable sutures. During the suturing process, attention is paid to aligning the skin edges to reduce scar formation. After suturing, the incision surface is covered with sterile gauze, and the breast is moderately compressed with a chest strap. After the operation, the patient is sent to the recovery room or ward, and vital signs, including body temperature, blood pressure, heart rate, respiration, etc., are closely monitored. Records are recorded every 15-30 minutes until the patient's vital signs are stable. The patient's state of consciousness and the presence of bleeding or exudate on the wound dressing are observed. If there is any abnormality, it is handled promptly, and the breast morphology is observed regularly. , size, skin color and temperature changes, evaluate the effect of fat filling, pay attention to whether there is swelling, increased pain, nodule formation, etc. in the breast, if there is any abnormality, timely ultrasound examination, determine whether there are complications such as fat liquefaction and hematoma, and take corresponding treatment measures, inform the patient to ensure adequate rest after surgery, avoid strenuous exercise and excessive abduction and lifting of the upper limbs, inform the patient to keep the wound clean and dry, avoid water, change the wound dressing regularly according to the doctor's orders, and ask the patient to return for a follow-up visit on time at different time points such as 1 week, 1 month, 3 months, and 6 months after surgery so that the doctor can understand the fat survival, breast recovery and whether there are any complications.
[0038] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various modifications and substitutions within the technical scope disclosed in the present invention, and such modifications and substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.
Claims
1. A multi-layered three-dimensional fat breast augmentation method, characterized by: The following steps are involved: S1. Preoperative planning and preparation: in-depth communication with the patient to understand her breast augmentation expectations, medical history, etc., and conduct a comprehensive physical and breast specialist examination and imaging examination to provide a basis for the surgical plan; S2. Fat harvesting and processing: selecting the donor area based on the patient's fat distribution, assessing the amount that can be harvested, marking the suction range, and cleaning and preparing the donor area; S3, multi-layer fat filling, evenly filling the appropriate amount of pure fat in different layers; S4. Postoperative care and observation: After completing multi-level fat filling, carefully check each incision to promptly detect and deal with possible postoperative complications to ensure the patient's life safety.
2. A multi-layered three-dimensional fat breast augmentation method according to claim 1, characterized in that: In the above S1, detailed face-to-face communication is conducted with the patient to fully understand her expectations for breast shape, including specific demands such as breast size, fullness, and firmness. At the same time, the patient is patiently listened to key information such as past medical history, surgical history, and drug allergy history, and a comprehensive physical examination is arranged for the patient, covering blood routine, coagulation function, liver and kidney function, infectious disease screening and other items to ensure that the patient's physical condition is suitable for surgery. In addition, emphasis is placed on specialized examination of the breast, accurately measuring data such as breast size, position, sagging, and skin elasticity, and evaluating the health status of breast tissue. With the help of breast ultrasound or MRI examination, the internal structure of the breast is further understood to rule out the presence of breast diseases, provide a detailed basis for the formulation of surgical plans, and assist patients in taking a standing position so that the breasts are in a natural position. The breast is in a naturally sagging state to accurately simulate the breast shape in the daily physiological state. A special skin marking pen is used to carefully mark the center position of the nipple and areola, as well as important anatomical landmarks such as the inframammary fold and the anterior axillary line on the surface of the breast. At the same time, according to the preoperative evaluation results, the approximate areas of fat filling under the pectoralis major muscle, under the breast gland and under the skin are preliminarily planned, and the parts that need to be adjusted are marked. According to the patient's body fat distribution, comprehensive consideration is given to factors such as fat quality, donor area concealment and postoperative recovery. Usually, the waist and abdomen, and thighs (the posterior and lateral sides are better, the inner sides are second) are selected as fat donor areas. The thickness, softness and available amount of fat in the donor area are evaluated to meet the needs of breast filling. In the selected donor area, the range of fat suction is marked. At the same time, the donor area is cleaned and the skin is prepared.
3. The multi-layered three-dimensional fat breast augmentation method according to claim 1, characterized in that: In the S2, general intravenous anesthesia is used, combined with the surgical area swelling anesthesia technology, the dosage is adjusted according to the patient's weight and the range of the donor area, and an appropriate amount of swelling fluid is injected into the donor area; hidden areas are selected within the marked range of the donor area, such as the umbilicus of the abdomen, the gluteal groove on the back of the thigh, the anterior inguinal fold, etc., and 2-3 tiny incisions of about 0.5-1 cm in length are made. Multi-point and multi-plane infiltration injection is used to make the swelling fluid evenly distributed in the subcutaneous fat layer, so as to achieve the purpose of local anesthesia, reduce bleeding and make the fat cells swell and easy to aspirate. The patient's reaction is closely observed during the injection process to ensure the anesthetic effect and safety; after waiting for the success of swelling anesthesia, the liposuction needle connected to the negative pressure suction device is inserted into the subcutaneous fat layer through the incision, and fat aspiration is performed in a fan-shaped or multi-tunnel manner in the order from deep to shallow and from proximal to distal. The operation is complete. During the process, keep the liposuction needle moving smoothly and control the suction pressure at -0.06--0.08MPa to avoid excessive suction or uneven suction that may cause unevenness in the donor area. At the same time, pay attention to the color and properties of the extracted fat to ensure that the quality of the obtained fat is good. Collect the aspirated adipose tissue in a sterile container to remove impurities such as blood, swelling fluid and fibrous connective tissue. Rinse the fat repeatedly with physiological saline to further remove residual impurities and broken cells. After preliminary filtration through a filter, transfer the filtered fat to a centrifuge tube and centrifuge at 1500 rpm for 1 minute to separate the fat into layers. After centrifugation, the upper layer is oil, the lower layer is swelling fluid and broken fat cells, and the middle layer is relatively pure fat particles. Carefully remove the upper layer of oil and the lower layer of liquid to retain the pure fat in the middle. According to the amount of fat required for the operation, an appropriate amount of fat is transferred into a special syringe and the uniformity of the fat particles is adjusted.
4. The multi-layered three-dimensional fat breast augmentation method according to claim 1, characterized in that: In S3, the patient is in the supine position, and after routine disinfection and draping, a small 8mm incision is made approximately 2cm above the intersection of the nipple and the anterior axillary line. Through the incision, a 2.0mm diameter filling needle is used to find the lateral edge of the pectoralis major muscle, penetrate the marginal tissue to reach the subpectoralis major space, and perform a small dose of tumescent anesthesia and hydrodissection. A suitable cavity is formed mainly in the lower extreme quadrant of the breast. During the dissection process, careful operation is performed to avoid damaging the pectoralis major fascia and ensure that the size and shape of the cavity can evenly accommodate the injected fat. A 5m spiral syringe filled with pure fat is connected to a dedicated 2.5mm diameter fat filling needle. Fat is also injected in a fan-shaped distribution. The injection order can be started from the inframammary fold and upward to the level of the nipple surface projection, filling evenly inside and outside. The fat is evenly distributed under the pectoralis major muscle to provide strong support for the breast. The amount of subpectoral filling accounts for 40%-50% of the total filling volume. For submammary gland filling, an incision of approximately 8mm in length is made at the intersection of the areola edge or the vertical line of the midclavicular line and the inframammary fold. Through the incision, a fine filling needle with a diameter of 2.0mm is used to disperse a small dose of tumescent anesthetic water in the space between the mammary gland and the pectoralis major fascia, and in the space between the upper surface of the mammary gland and the subcutaneous tissue, to form a suitable cavity. During the separation process, the operation is carried out carefully to avoid damaging the mammary tissue and the pectoralis major fascia, ensuring that the size and shape of the cavity can evenly accommodate the filled fat. A 5m spiral syringe filled with pure fat is connected to a dedicated 2. A 0mm fat filling needle enters the separated submammary cavity through the incision, and fat is slowly and evenly injected in a fan-shaped distribution in the order from the outside of the breast to the inside, from the upper quadrant to the nipple, and then to the lower quadrant. During the injection process, the needle is withdrawn while injecting to maintain the uniformity of fat filling and avoid local accumulation. The filling amount is determined according to the patient's breast foundation and the expected effect, accounting for 30%-40% of the total filling amount. At the same time, during the injection process, gently press the surface of the breast with your fingers to feel the fat distribution, and adjust the injection direction and dosage in time to ensure a natural filling effect. Preparation of the subcutaneous layer: Based on the incision at the edge of the areola or the inframammary fold, the filling needle is inserted into the subcutaneous fat layer, and a sneak separation is performed in the shallow subcutaneous layer to form multiple tiny tunnels, creating conditions for the uniform distribution of fat. The remaining pure fat is slowly injected into the subcutaneous layer using a multi-tunnel, micro-injection method. During the injection, the filling is performed radially from the edge of the breast to the center, so that the fat is evenly spread under the skin, improving the flatness and fullness of the breast surface. The amount of subcutaneous filling accounts for 10%-20% of the total filling amount. During the filling process, the changes in the skin surface should be closely observed to avoid local unevenness or fat accumulation.
5. The multi-layered three-dimensional fat breast augmentation method according to claim 1, characterized in that: In S4, after completing the multi-layer fat filling, each incision is carefully checked to ensure that there is no active bleeding, and the incisions are sutured layer by layer using absorbable sutures. During the suturing process, attention is paid to aligning the skin edges to reduce scar formation. After suturing, the incision surface is covered with sterile gauze, and the breast is moderately lifted with a chest strap. After the operation, the patient will be sent to the recovery room or ward and vital signs, including body temperature, blood pressure, heart rate, respiration, etc., will be closely monitored and recorded every 15-30 minutes until the patient's vital signs are stable; the patient's state of consciousness and whether there is bleeding or exudate from the wound dressing will be observed. If there is any abnormality, it will be dealt with in time. The breast shape, size, skin color and temperature changes will be observed regularly to evaluate the effect of fat filling. Pay attention to whether the breast has swelling, increased pain, nodule formation, etc. If there is any abnormality, an ultrasound examination will be performed in time to determine whether there are complications such as fat liquefaction and hematoma, and appropriate treatment measures will be taken. The patient will be informed that they need to ensure adequate rest after the operation, avoid strenuous exercise and excessive abduction and lifting of the upper limbs, inform the patient to keep the wound clean and dry, avoid getting it wet, change the wound dressing regularly according to the doctor's orders, and instruct the patient to return for a follow-up visit on time at different time points such as 1 week, 1 month, 3 months, and 6 months after the operation so that the doctor can understand the fat survival, breast recovery, and whether there are any complications.