Posterior cervical fat pad correction device

Abstract

The application relates to the field of medical devices, in particular to a nuchal fat pad correction device. The correction belt comprises a back strap, a mounting shell, and a gas bag layer, a temperature control layer and a thermoplastic layer in the mounting shell. The gas bag layer has a plurality of sub-gas bags distributed along the Y axis, which can be inflated to press on preset positions; the temperature control layer has a plurality of temperature control components distributed along the Y axis, which are used for hot / cold compress or heating shaping of the thermoplastic layer, and the temperature control components, the thermoplastic layer and the gas bag layer are sequentially distributed along the X axis. Compared with the prior art, the correction belt can more accurately press to inhibit fat hyperplasia, and multiple functions are synergized to prevent and repair, the sub-gas bags of the gas bag layer can uniformly press to promote skin adhesion, can press and control temperature as required to inhibit fat accumulation and skin relaxation, and the multiple split temperature control components can ensure that the thermoplastic layer is shaped and the repair is accelerated.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and more specifically, to a device for correcting posterior neck fat pads. Background Technology

[0002] Nuchal fat pads (commonly known as "dowager's hump") are raised lesions formed by abnormal accumulation of subcutaneous fat or connective tissue hyperplasia at the back of the neck. They not only affect the appearance of the neck but can also cause neck and shoulder pain and stiffness by compressing the cervical spine and obstructing local blood circulation, and may even increase the risk of cervical spine degeneration. The formation of this condition is related to factors such as prolonged poor posture, abnormal fat metabolism, and aging. It has a higher incidence rate among sedentary individuals and the middle-aged and elderly population. Some patients require plastic surgery to remove the fat pads to improve appearance and alleviate symptoms.

[0003] Currently, intervention methods for posterior neck fat pads are mainly divided into two categories: daily prevention and postoperative repair. However, existing technologies have significant limitations.

[0004] In the field of daily prevention, existing products are mostly ordinary neck braces, elastic bandages, or heating pads, which have limited functions and are not targeted enough. Ordinary neck braces can only provide basic cervical spine support and cannot apply precise pressure to the area where fat accumulates at the back of the neck to inhibit fat hyperplasia; elastic bandages can achieve simple pressure, but the area near the upper neck arteries is easily affected by excessive pressure, which can affect blood flow, or the pressure applied by the elastic bandage may be insufficient to inhibit fat accumulation; heating pads can only promote blood circulation through heat alone, lacking the synergistic effect of pressure and shaping, and are difficult to prevent the formation and development of fat pads at the back of the neck from the root.

[0005] In the field of postoperative repair, postoperative pressure fixation is necessary to promote adhesion between the skin and subcutaneous tissue, reduce dead space formation, and inhibit fat re-accumulation and skin laxity. Current postoperative pressure devices mainly consist of universal elastic garments, pressure pads, or single-balloon pressure devices: universal elastic garments have non-adjustable pressure and cannot adapt to the physiological curve of the back of the neck, easily leading to uneven local pressure and affecting the repair effect; single-balloon pressure devices can only provide uniform pressure, without considering the physiological differences of different areas of the back of the neck (upper arterial blood supply area, middle core repair area, lower back muscle area), excessive pressure may lead to insufficient blood supply to the neck, while insufficient pressure cannot meet the requirements for tissue adhesion.

[0006] Therefore, there is an urgent need for a cervical fat pad correction device that combines graded precise pressure application, dual-mode temperature control shaping, and modular adaptability. This device would not only meet the medical needs of postoperative repair but also satisfy the usage scenarios of daily prevention, thus solving the technical pain points of existing technologies such as inaccurate pressure, limited functionality, poor adaptability, and insufficient safety. Summary of the Invention

[0007] The purpose of this application is to provide a posterior cervical fat pad correction device that can apply pressure to different areas of the posterior cervical fat pad to inhibit fat hyperplasia, and can also apply pressure evenly to promote skin adhesion and reduce dead space.

[0008] To achieve the above objectives, in a first aspect, the present invention provides a posterior neck fat pad correction device, comprising:

[0009] strap;

[0010] Mounting housing, which is disposed on the shoulder strap;

[0011] An airbag layer is disposed within the mounting housing. The airbag layer includes multiple sub-airbags, which are distributed sequentially along the Y-axis. Each sub-airbag is provided with a spiral coil. Inflating the spiral coil causes the sub-airbag to expand, thereby applying pressure to a predetermined location.

[0012] A temperature control layer and a thermoplastic layer are disposed within the mounting housing. The temperature control layer includes multiple temperature control components, which are sequentially distributed on the thermoplastic layer along the Y-axis. The temperature control components are used for hot / cold compressing of the preset area or shaping of the thermoplastic layer. The temperature control components, the thermoplastic layer, and the airbag layer are sequentially distributed along the X-axis.

[0013] In an optional embodiment, the mounting shell is provided with a skin contact port, and a skin-adhesive layer is provided at the skin contact port. The airbag layer and the skin-adhesive layer are distributed sequentially along the X-axis direction.

[0014] In an optional embodiment, the mounting shell is provided with an assembly port, and an elastic wear-resistant layer is detachably provided at the assembly port of the mounting shell, the elastic wear-resistant layer being used to open or close the assembly port.

[0015] In an optional embodiment, the thermoplastic layer is provided with circular or polygonal through holes.

[0016] In an optional embodiment, the temperature control component includes a semiconductor wafer disposed on the thermoplastic layer.

[0017] In an optional implementation, the sub-airbag has a first pressure sensor.

[0018] In an optional embodiment, the airbag layer is replaced with a hot compress pack.

[0019] In an optional embodiment, a heat insulation film is also included, which is disposed between the thermoplastic layer and the airbag layer.

[0020] In an optional implementation, multiple sub-airbags are divided into three groups along the Y-axis for pressure control. Along the Y-axis, the three groups of sub-airbags are the first airbag group, the second airbag group, and the third airbag group.

[0021] The sub-airbag pressure control modes include a first pressure control mode and a second pressure control mode. In the first pressure control mode, the pressure of the first airbag group is 15 mmHg-20 mmHg, the pressure of the second airbag group is 30 mmHg-35 mmHg, and the pressure of the third airbag group is 22 mmHg-28 mmHg.

[0022] In the second pressure control mode, the pressure of the first airbag group is 8 mmHg-12 mmHg, the pressure of the second airbag group is 18 mmHg-22 mmHg, and the pressure of the third airbag group is 15 mmHg-18 mmHg.

[0023] After wearing the second pressure control mode for the first preset time, the pressure of the three airbag groups needs to be reduced by more than 50%, and the reduced pressure state should be maintained for at least ten minutes.

[0024] The maximum pressure for the first airbag group is 25 mmHg, the maximum pressure for the second airbag group is 40 mmHg, and the maximum pressure for the third airbag group is 33 mmHg.

[0025] In an optional implementation, the steps further include:

[0026] The temperature control components are divided into three groups along the Y-axis. The three groups of temperature control components are the first temperature control group, the second temperature control group, and the third temperature control group.

[0027] The temperature control mode of the temperature control layer includes a first temperature control mode, a second temperature control mode, and a third temperature control mode. In the first temperature control mode, the second temperature control group first preheats and softens the thermoplastic layer with the first heating temperature for a first preset heating time. Then, the third temperature control group continues to heat the thermoplastic layer with the first heating temperature for a second preset heating time, causing the thermoplastic layer to deform as a whole. Then, the third temperature control group continues to cool with the second cooling temperature for a first preset cooling time, so that the thermoplastic layer is shaped to match the curvature of the skin at the back of the human neck.

[0028] In the second temperature control mode, the three temperature control groups continuously heat the preset area at the first heat compress temperature for the first preset heat compress duration, with the upper limit of the first heat compress temperature being 47℃.

[0029] In the third temperature control mode, the three temperature control groups continuously cool the preset area at the first cold compress temperature for a first preset cold compress duration, with the lower limit of the first cold compress temperature being 4℃.

[0030] The posterior neck fat pad correction device provided in this application improves upon the shortcomings of existing technologies. For example, existing ordinary neck braces have a single function and cannot apply pressure precisely, while the airbag layer of the correction device provided in this application, with its multiple sub-airbags, can apply pressure to different areas of the posterior neck fat pad to inhibit fat hyperplasia; existing elastic bandages have defects in pressure application, while the posterior neck fat pad correction device provided in this application can apply pressure precisely and is highly targeted; existing heat therapy patches have a single function, while the posterior neck fat pad correction device provided in this application combines a temperature control layer, an airbag layer, and a thermoplastic layer, providing multiple functions for synergistic prevention. In terms of repair, general-purpose elastic garments are prone to uneven pressure application, while the posterior neck fat pad correction device provided in this application has elliptical structures for each layer, and the thermoplastic layer is malleable. The sub-airbags in the airbag layer can apply pressure evenly, promoting skin adhesion and reducing dead space. Existing single-airbag pressure devices do not consider regional differences, while the posterior neck fat pad correction device provided in this application has sub-airbags and temperature control components distributed along the Y-axis, which can apply pressure and control temperature as needed, inhibiting fat accumulation and skin laxity. The setting of multiple separate temperature control components can ensure the thermoplastic layer is shaped, guarantee the effect of hot and cold compresses, accelerate repair, and the thermoplastic layer material is suitable.

[0031] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 A schematic diagram of the structure from one perspective of one embodiment of the posterior neck fat pad correction device provided in this application;

[0034] Figure 2 An exploded view of one embodiment of the posterior neck fat pad correction device provided in this application;

[0035] Figure 3 An exploded view from two perspectives of one embodiment of the posterior neck fat pad correction device provided in this application;

[0036] Figure 4 A schematic diagram of the airbag layer of one embodiment of the posterior neck fat pad correction device provided in this application;

[0037] Figure 5 A two-view structural schematic diagram of one embodiment of the posterior neck fat pad correction device provided in this application;

[0038] Figure 6Wiring diagram of a portion of the structure of one embodiment of the posterior neck fat pad correction device provided in this application.

[0039] icon:

[0040] 100 - Shoulder straps; 110 - Straps;

[0041] 200 - Mounting housing; 210 - Skin contact port; 220 - Assembly port;

[0042] 300-Skin-adhesive layer;

[0043] 400 - Airbag layer; 410 - Sub-airbag; 420 - First pressure sensor; 430 - Spiral coil;

[0044] 500 - Heat insulation film; 600 - Thermoplastic layer; 700 - Temperature control layer; 710 - Temperature control component;

[0045] 800 - Elastic wear-resistant layer; 900 - Auxiliary housing; 910 - Interactive component. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0047] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0048] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0049] like Figure 1 and Figure 2As shown, in a first aspect, embodiments of this application provide a posterior neck fat pad correction device, including a shoulder strap 100, a mounting shell 200, an airbag layer 400, a temperature control layer 700, and a thermoplastic layer 600.

[0050] During use, the carrying strap 100 is fixed to the patient's torso.

[0051] The mounting shell 200 is mounted on the shoulder strap 100 and located at the fat pad at the back of the patient's neck.

[0052] like Figure 2 As shown, the temperature control layer 700, the thermoplastic layer 600, and the airbag layer 400 are disposed within the mounting housing 200; as Figure 3 As shown, the temperature control layer 700, the thermoplastic layer 600, and the airbag layer 400 are distributed sequentially along the X-axis.

[0053] In this embodiment, during hot compresses, the temperature control layer 700 is used for heating. The temperature of the temperature control layer 700 is higher than the temperature at the back of the patient's neck. The heat emitted by the temperature control layer 700 can be conducted to the back of the patient's neck through the thermoplastic layer 600 and the airbag layer 400, thereby achieving hot compresses. During cold compresses, the temperature control layer 700 is used for cooling. The temperature of the temperature control layer 700 is lower than the temperature of the skin at the back of the patient's neck. The heat emitted by the skin at the back of the patient's neck can be conducted to the temperature control layer 700 through the airbag layer 400 and the thermoplastic layer 600, thereby achieving cold compresses. According to Fourier's law of heat conduction, as long as there is a temperature difference (ΔT) and a thermally connected path, heat transfer will inevitably occur, and its rate is determined by thermal resistance. In this embodiment, during hot compresses, the temperature control layer 700 acts as a stable heat source (T1), and the skin at the back of the patient's neck acts as the low-temperature end (T2, approximately 37°C). During cold compresses, the skin at the back of the patient's neck acts as a stable heat source (T3, approximately 37°C), and the temperature control layer 700 acts as the low-temperature end (T4). The temperature difference ΔT objectively exists. The thermoplastic layer 600 and the airbag layer 400 together form a heat transfer path with a defined total thermal resistance (R_total). According to the formula Q=ΔT / R_total, as long as the heat source (the temperature control layer 700 is the heat source during hot compresses, and the patient's neck skin is the heat source during cold compresses) provides a stable heat flow Q, the system will inevitably reach a steady state, allowing heat to be continuously conducted, thereby achieving hot or cold compresses.

[0054] The airbag layer 400 includes multiple sub-airbags 410, which are sequentially distributed along the Y-axis. For example, the Y-axis is vertically downward. Before wearing, the multiple sub-airbags 410 are sequentially distributed along the Y-axis. When the shoulder strap 100 is fixed to the patient's torso, the multiple sub-airbags 410 fit against the back of the patient's neck. Therefore, the multiple sub-airbags 410 are sequentially distributed along the curve of the back of the patient's neck.

[0055] For example, the number of sub-airbags 410 is three. In another embodiment, the number of sub-airbags 410 is four. In yet another embodiment, the number of sub-airbags 410 is five. Of course, other numbers of sub-airbags 410 can also be provided, such as six or seven.

[0056] like Figure 4 As shown, the sub-airbag 410 is filled with gas, and a spiral coil 430 is also provided inside the sub-airbag 410. Gas is injected into the spiral coil 430, and the spiral coil 430 expands, causing the sub-airbag 410 to expand. The expansion of the sub-airbag 410 applies pressure to a predetermined area; the predetermined area is the patient's posterior neck fat pad. Multiple sub-airbags 410 can apply pressure to different areas of the patient's posterior neck fat pad. The spiral coil 430 makes the expansion of the sub-airbags 410 more uniform, and makes the pressure applied by the sub-airbags 410 to the corresponding posterior neck fat pad areas more uniform. The expanded sub-airbags 410 also enable the various layers (such as the airbag layer 400, the thermoplastic layer 600, and the temperature control layer 700) to fit tightly together, reducing air gaps and facilitating heat conduction.

[0057] The temperature control layer 700 includes multiple temperature control components 710, which are sequentially distributed on the thermoplastic layer 600 along the Y-axis. The temperature control components 710 are used for hot / cold compressing of preset areas or heating and shaping the thermoplastic layer 600. The temperature control components 710, the thermoplastic layer 600, and the airbag layer 400 are sequentially distributed along the X-axis.

[0058] For example, the number of temperature control components 710 is three. In another embodiment, the number of temperature control components 710 is four. In yet another embodiment, the number of temperature control components 710 is five. Of course, the number of temperature control components 710 can also be other than three, such as six or seven.

[0059] For example, the temperature control component 710 can heat the thermoplastic layer 600 to shape the thermoplastic layer 600 into a shape that conforms to the physiological curve of the back of the patient's neck, thereby improving the fit.

[0060] The temperature control component 710 can also apply heat and cold compresses to the fat pad area at the back of the neck.

[0061] Multiple temperature control components 710 are used to thermoform the thermoplastic layer 600. The multiple temperature control components 710 are set separately. The temperature control components 710 can follow the deformation of the thermoplastic layer 600, ensuring that the thermoplastic layer 600 remains in contact with the temperature control component 710 after deformation. This allows the temperature control component 710 to effectively cool the thermoplastic layer 600 and accelerate the shaping of the thermoplastic layer 600. After thermoplastic deformation, the thermoplastic layer 600 fits the curve of the back of the patient's neck more closely, thus ensuring that the position of the temperature control component 710 corresponds more closely to the back of the patient's neck, further ensuring the hot and cold compress effects of the temperature control component 710.

[0062] For example, the thermoplastic layer 600 uses a medical-grade polycaprolactone thermoplastic sheet with a softening temperature of approximately 65°C (Shenzhen Guanghua Weiye's low-temperature polycaprolactone thermoplastic sheet softens at 65°C-70°C; using this thermoplastic sheet balances shaping efficiency and skin safety). The hot compress temperature is 40°C-43°C, and the cold compress temperature is 8°C-12°C. Therefore, after the thermoplastic layer 600 has been thermoplasticized and shaped, hot and cold compresses will not affect the shape of the thermoplastic layer 600 conforming to the physiological curve of the back of the neck. Generally, the back-of-the-neck fat pad correction device is for individual use only, and the thermoplastic layer 600 only needs to be shaped once during its entire lifespan. In other embodiments, the thermoplastic layer 600 uses a medical-grade polyurethane thermoplastic sheet. In other embodiments, the thermoplastic layer 600 uses a shape memory polymer sheet, pre-set with the "memory shape" of the physiological curve of the back of the neck. During shaping, heating to 65°C activates the shape memory function, and it automatically shapes after being applied to the back of the neck, without the need for external pressure. The commonality among different materials in shaping is that it is achieved through temperature control, and the stability after shaping is superior. The following explanation uses polycaprolactone thermoplastic sheet for the thermoplastic layer 600 as an example to illustrate the technical solution of this application.

[0063] Based on the actual morphological characteristics of the posterior neck fat pad (including the distribution range, thickness, and contour dimensions of the adipose tissue), doctors can dynamically adapt the posterior neck curvature using the sub-airbags of the posterior neck fat pad correction device described in this application. In routine preventative scenarios, doctors can preset the expansion degree of each sub-airbag to adapt to physiological curvature parameters, applying gentle mechanical intervention to the posterior neck fat pad, maintaining the normal physiological state of the local soft tissue, and reducing the risk of abnormal fat accumulation.

[0064] In postoperative intervention scenarios, specifically during the tissue repair phase following posterior cervical fat pad removal, physicians can utilize the temperature-controlled components of the corrective device described in this application to shape the thermoplastic layer based on the postoperative fat tissue regeneration rate, wound healing progress, and local soft tissue remodeling patterns. This allows the thermoplastic layer to better conform to the neck curvature, enabling more precise setting of a personalized shaping curvature. Through the controllable mechanical constraints and adaptive support of the carrying strap, the growth direction and morphological development of local tissues are regulated, assisting in achieving precise shaping of the posterior neck contour postoperatively, thereby improving postoperative aesthetic results and tissue repair quality.

[0065] like Figure 2 As shown, the mounting shell 200, temperature control layer 700, thermoplastic layer 600 and airbag layer 400 are set into an elliptical structure, which makes it fit the patient's posterior neck fat pad area more closely, and the applied pressure is more uniform, and the hot and cold compresses are more even and effective.

[0066] For example, the temperature control component 710 is configured as a heat exchange plate, through which a cooling medium is introduced for cold application or cooling of the thermoplastic layer, and through which a heating medium is introduced for hot application or heating of the thermoplastic layer.

[0067] In this application, ordinary neck braces only provide basic cervical spine support and cannot precisely apply pressure to areas of fat accumulation at the back of the neck. However, the airbag layer 400 of this corrective belt contains multiple sub-airbags 410 distributed sequentially along the Y-axis, which can apply pressure to different areas of the patient's posterior cervical fat pad, effectively inhibiting fat hyperplasia and preventing the formation and development of the posterior cervical fat pad from the root, thus making up for the shortcomings of ordinary neck braces in terms of single function.

[0068] When elastic bandages apply pressure, the area near the upper neck arteries can be affected by pressure, potentially impacting blood flow or failing to effectively inhibit fat accumulation. This corrective bandage, with its cleverly designed sub-airbags 410, avoids this issue, allowing for precise pressure application to different areas, making it more targeted.

[0069] Traditional heat therapy patches only promote blood circulation through heat, lacking the synergistic effects of pressure and shaping. This corrective band's temperature-controlled layer 700 not only provides heat / cold compresses to promote blood circulation, but also combines with the airbag layer 400 for pressure and the thermoplastic layer 600 for shaping. This synergistic effect of multiple functions more comprehensively prevents the formation and development of posterior neck fat pads, overcoming the limitations of single-function heat therapy patches.

[0070] Universal elastic garments have non-adjustable pressure and cannot conform to the physiological curve of the back of the neck, easily leading to uneven local pressure. This corrective belt features an elliptical structure for its mounting shell 200, temperature control layer 700, thermoplastic layer 600, and airbag layer 400, which better conforms to the patient's cervical fat pad area. Simultaneously, the thermoplastic layer 600 can be molded to fit the physiological curve of the back of the neck, and the multiple sub-airbags 410 of the airbag layer 400 can apply appropriate pressure according to the physiological characteristics of different areas, achieving uniform pressure, promoting adhesion between the skin and subcutaneous tissue, reducing dead space formation, and improving the repair effect.

[0071] The single-bag pressurization device does not consider the physiological differences of different areas in the back of the neck (upper arterial blood supply area, middle core repair area, and lower back muscle area), resulting in unreasonable pressure control. The correction belt provided in this application has more than 400 sub-airbags 410 in the airbag layer and more than 700 temperature control components 710 in the temperature control layer distributed along the Y-axis. It can apply different pressures and control different temperatures according to the physiological characteristics of different areas, avoiding the problem of insufficient blood supply to the neck due to excessive pressure or insufficient pressure to meet the tissue adhesion requirements due to insufficient pressure, and better inhibiting the re-accumulation of fat and skin laxity.

[0072] Multiple separate temperature control components 710 are used to thermoform the thermoplastic layer 600. Each component 710 deforms with the thermoplastic layer 600, ensuring it remains in contact with the layer even after deformation. This effectively cools the thermoplastic layer 600 and accelerates its shaping. After thermoplastic deformation, the thermoplastic layer 600 better conforms to the patient's cervical curve, ensuring the temperature control components 710 are more aligned with the patient's neck, further guaranteeing the effectiveness of heat and cold compresses and accelerating postoperative recovery. Furthermore, the medical-grade polycaprolactone thermoplastic plate used in the thermoplastic layer 600 does not affect its shape conforming to the physiological curve of the cervical spine under the set heat and cold compress temperatures.

[0073] like Figure 1 and Figure 2 As shown, in one embodiment, the mounting shell 200 is provided with a skin contact port 210, and a skin-adhesive layer 300 is provided at the skin contact port 210. The airbag layer 400 and the skin-adhesive layer 300 are distributed sequentially along the X-axis direction.

[0074] For example, the skin-contact layer 300 is made of a medical-grade antibacterial and breathable cotton blend fabric containing silver ions, which has antibacterial properties and absorbs exudate. In another embodiment, the skin-contact layer 300 is made of bamboo fiber + silver ion antibacterial fabric, with bamboo fiber accounting for 75% and silver ion antibacterial fiber accounting for 25%, a breathability of ≥1500mm / s, and an antibacterial rate (against Staphylococcus aureus and Escherichia coli) of ≥99%, conforming to GB / T20944.3-2008 standard. The advantages are superior moisture-wicking performance, making it suitable for long-term wear; its equivalence lies in meeting the medical requirements for antibacterial and breathability.

[0075] In another embodiment, the skin-adhesive layer 300 is made of a blend of medical-grade silk and polylactic acid antibacterial fiber: silk accounts for 60% and polylactic acid antibacterial fiber accounts for 40%, with a softness ≤50mN, excellent biodegradability, and to avoid environmental pollution. The equivalence lies in achieving the required biocompatibility and antibacterial properties, thus improving wearing comfort.

[0076] In this embodiment, Fourier's law of heat conduction still applies. The skin-adhesive layer 300 does not hinder the implementation of hot and cold compresses. During hot compresses, the heat emitted by the temperature control layer 700 can be conducted to the back of the patient's neck through the thermoplastic layer 600, the airbag layer 400, and the skin-adhesive layer 300, thereby achieving hot compresses. During cold compresses, the heat emitted by the skin at the back of the patient's neck can be conducted to the temperature control layer 700 through the skin-adhesive layer 300, the airbag layer 400, and the thermoplastic layer 600, thereby achieving cold compresses.

[0077] like Figure 5 As shown, in one embodiment, the mounting shell 200 is provided with an assembly port 220, and an elastic wear-resistant layer 800 is detachably provided at the assembly port 220 of the mounting shell 200. The elastic wear-resistant layer 800 can realize the function of opening or closing the assembly port 220.

[0078] For example, one side of the elastic wear-resistant layer 800 is fixedly installed on one side of the mounting port 220 of the mounting shell 200, and the other side of the elastic wear-resistant layer 800 is detachably installed on the other side of the mounting port 220 of the mounting shell 200. The elastic wear-resistant layer 800 can be fixedly connected by means of adhesive, bolt connection or other means, and can be detachably connected by means of snaps, zippers or other means.

[0079] In this application, when it is necessary to replace, repair or clean components such as the airbag layer 400, thermoplastic layer 600 or temperature control layer 700 inside the mounting shell 200, it is only necessary to open the elastic wear-resistant layer 800 to open the assembly port 220, so that these components can be easily accessed without the need for a complicated disassembly of the entire corrective belt. This greatly simplifies the maintenance process, reduces maintenance costs, and improves the ease of use and maintainability of the corrective belt.

[0080] In one embodiment, the elastic abrasion-resistant layer 800 can be opened, allowing the airbag layer 400 to be replaced with a heat pack, thus expanding the functionality of the corrective band. In addition to its original functions of support, compression, and shaping, it can also be combined with the heat pack to achieve drug therapy, meeting the needs of different patients at different stages of treatment for the synergistic effect of multiple treatment methods and providing more possibilities for personalized treatment. For example, for some patients with inflammation of the posterior neck fat pad or who require medication to promote repair, using a heat pack can enhance the treatment effect.

[0081] In one embodiment, the thermoplastic layer 600 is provided with circular through holes, and multiple circular through holes are provided. In another embodiment, the thermoplastic layer 600 is provided with polygonal through holes, such as triangular through holes, rectangular through holes, rhomboid through holes, pentagonal through holes, or hexagonal through holes.

[0082] The thermoplastic layer 600 has through-holes that improve its breathability and thermal conductivity. When the temperature control component 710 applies heat or cold compresses, the heat or cold can be transferred to the skin and tissues at the back of the neck more quickly and evenly through the through-holes, improving the efficiency of the heat or cold compress, enhancing the temperature control effect, and helping to better promote blood circulation, relieve muscle tension, or inhibit fat hyperplasia.

[0083] Unlike the above embodiment where the temperature control component 710 is configured as a heat exchange plate, such as... Figure 3 As shown, in one embodiment, the temperature control component 710 includes a semiconductor wafer disposed on the thermoplastic layer 600.

[0084] For example, such as Figure 6 As shown, the semiconductor chip changes the direction of current flow through a commutator. A forward current flow to the semiconductor chip can achieve a heating effect, while a reverse current flow can achieve a cooling effect.

[0085] For example, the semiconductor wafer is attached to the inside of the thermoplastic layer with thermally conductive silicone. The silicone layer can reduce temperature loss and buffer the slight deformation of the thermoplastic layer during softening and shaping, thus preventing the semiconductor wafer from being damaged by the deformation of the thermoplastic layer. The two have extremely strong structural compatibility.

[0086] For example, the semiconductor sheet is configured as a flexible semiconductor sheet.

[0087] Semiconductor wafers are electrically connected via wires. However, in another embodiment, the semiconductor wafers are electrically connected via existing liquid metal interconnect technology / flexible conductive adhesive, which can solve the problems of circuit connectivity and strain adaptation after splicing. For example, by using liquid metal fluid as the connection medium between small flexible semiconductor wafers, it can ensure stable electrical signal and temperature conduction, and adapt to deformations such as stretching and bending as the neck moves, avoiding breakage or failure at the splice.

[0088] like Figure 1 As shown, in one embodiment, a first pressure sensor 420 is provided on the side wall of the sub-airbag 410 near a preset location.

[0089] The first pressure sensor 420 is used to obtain the magnitude of the pressure exerted by the sub-airbag 410 on the back of the neck.

[0090] In another embodiment, the first pressure sensor 420 is disposed within the sub-airbag 410.

[0091] In one embodiment, the posterior neck fat pad correction device further includes a temperature sensor disposed on the semiconductor chip of the temperature control component 710 for obtaining the temperature of the semiconductor chip.

[0092] like Figure 6As shown, a temperature sensor is mounted on a semiconductor chip. When the temperature of the semiconductor chip exceeds a safe value, the temperature sensor cuts off the power supply to the semiconductor chip.

[0093] like Figure 2 As shown, in one embodiment, the posterior neck fat pad correction device further includes a heat insulation film 500 disposed between the thermoplastic layer 600 and the airbag layer 400.

[0094] The heat insulation film 500 is designed with a 0.1mm breathable diaphragm to prevent high temperatures from damaging the airbag layer 400. The heat insulation film 500 is not "completely non-conductive," but rather, through material properties and structural design (such as PTFE breathable heat insulation film 500 / silicone rubber composite aerogel heat insulation film 500), it blocks high temperatures exceeding safe limits (such as thermoplastic temperature 65℃) from directly burning the skin, while allowing efficient transfer of safe heat in daily temperature control mode (40-43℃ hot compress, 8-12℃ cold compress). Its mechanism of action is similar to a "temperature filter."

[0095] In this embodiment, Fourier's law of heat conduction still applies. The heat insulation film 500 only filters out high and low temperatures and does not hinder temperature conduction within the allowable range. Therefore, the heat insulation film 500 does not hinder the realization of hot and cold compresses. During hot compresses, the heat emitted by the temperature control layer 700 can be conducted to the back of the patient's neck through the thermoplastic layer 600, the heat insulation film 500, the airbag layer 400, and the skin-adhesive layer 300, thereby achieving hot compresses. During cold compresses, the heat emitted by the skin at the back of the patient's neck can be conducted to the temperature control layer 700 through the skin-adhesive layer 300, the airbag layer 400, the heat insulation film 500, and the thermoplastic layer 600, thereby achieving cold compresses.

[0096] like Figure 1 As shown, in one embodiment, the mounting housing 200 is mounted on the shoulder strap 100 by at least two straps 110, one end of which is connected to the shoulder strap 100 and is positionally adjustable on the shoulder strap 100.

[0097] like Figure 1 As shown, in one embodiment, the shoulder strap 100 is provided with an interactive component 910.

[0098] For example, the interactive component 910 includes, but is not limited to, a button adjustment unit, a knob adjustment unit, a touch screen adjustment unit, and combinations thereof.

[0099] For example, the interactive component 910 is provided with a communication module, which is configured as a wired communication module and / or a wireless communication module.

[0100] Wired communication modules include, but are not limited to, Ethernet modules, USB (Universal Serial Bus) modules, serial port modules, IEEE1394 / FireWire modules, or fiber optic modules.

[0101] Wireless communication modules include, but are not limited to, cellular communication modules, Wi-Fi modules, Bluetooth modules, ZigBee modules, LoRa (Long Range) modules, NB-IoT (Narrowband Internet of Things) modules, UWB (Ultra-Wideband) modules, RFID (Radio Frequency Identification) modules, infrared communication modules, satellite communication modules, RF wireless data communication modules, or 2.4GHz wireless transceiver modules.

[0102] like Figure 1 As shown, in one embodiment, the shoulder strap 100 is provided with an auxiliary housing 900, and an energy storage component and an air pump are provided inside the auxiliary housing 900. The energy storage component is electrically connected to the air pump to provide power to the air pump.

[0103] For example, the edges of the auxiliary housing 900 are rounded.

[0104] For example, an energy storage assembly is constructed by arranging multiple energy storage stacks, which are energy storage cells arranged in a predetermined direction.

[0105] The energy storage unit is, for example, a nickel-metal hydride battery or a lithium-ion battery (medical-grade soft-pack lithium polymer battery, 3.7V / 1500mAh), or a rechargeable battery. The energy storage unit can use either a liquid or solid electrolyte. Alternatively, the energy storage unit can also be configured as a single capacitor capable of storing electricity.

[0106] For example, the energy storage component is also electrically connected to a BMS (Battery Management System) module, which is configured to have the following functions:

[0107] Overcharge protection: The maximum charging voltage is 3.7V (soft-pack lithium battery) / 3.65V (lithium iron phosphate) to prevent overcharging and bulging.

[0108] Over-discharge protection: Discharge voltage limit of 2.75V to prevent battery damage from low charge.

[0109] Overcurrent protection: Set the upper limit of discharge current to 2A (adapt to the maximum power consumption of the temperature control module) to avoid excessive current during short circuit.

[0110] Temperature protection: Built-in NTC (Negative Temperature Coefficient) temperature sensor automatically cuts off the circuit when the battery temperature exceeds 45℃ (such as when exposed to direct sunlight in summer or when the device overheats).

[0111] Balance protection: If multiple cells are connected in parallel, the BMS module must have a cell balancing function to ensure that the voltage of each cell is consistent and to extend battery life.

[0112] Low power consumption design: The device automatically enters sleep mode after being idle for 10 minutes, the temperature control module stops working, and only the sensor low power monitoring is retained (power consumption ≤10mA).

[0113] Battery life display: Add a battery percentage display (e.g., 100% / 75% / 50% / 25%) to the chest interaction component. When the battery is low (≤10%), issue an audible and visual alarm to remind you to charge.

[0114] For example, the energy storage component is also electrically connected to a power receiving interface, which is a Type-C waterproof interface (IP67 rating) that supports 5V / 2A fast charging and takes about 1.5-2 hours to charge (1500mAh battery).

[0115] In other embodiments, a combination of carbon fiber heating wire and semiconductor cooling pad replaces the flexible semiconductor. During shaping and heat application, the carbon fiber heating wire (uniformly distributed within the thermoplastic layer) is used, with the heating temperature controlled at 65°C (shaping) and 40-43°C (heat application) by a PTC (Positive Temperature Coefficient) thermistor. For cooling mode, an independent flexible semiconductor cooling pad (attached to the outside of the thermoplastic plate) is used to achieve a temperature drop of 8-12°C. The advantages are better heating uniformity and a 30% cost reduction; the equivalence lies in achieving both heating and cooling functions separately, meeting the requirements of dual-mode temperature control.

[0116] In one embodiment, multiple sub-airbags 410 are sequentially divided into three groups along the Y-axis for pressure control. Along the Y-axis, the three groups of sub-airbags 410 are the first airbag group, the second airbag group, and the third airbag group.

[0117] For ease of understanding, such as Figure 2 As shown, it is assumed that the airbag layer 400 is provided with three sub-airbags 410, but this does not constitute a limitation on the scope of protection of this application. The first airbag group, the second airbag group and the third airbag group are each provided with one sub-airbag 410.

[0118] The 410 sub-balloon pressure control mode includes a first pressure control mode and a second pressure control mode. The first pressure control mode is used, for example, after surgery. In the first pressure control mode, the pressure of the first balloon group is 15 mmHg-20 mmHg (≈2.0-2.7 kPa). If the pressure of the first balloon group exceeds 20 mmHg, it may affect the blood supply to the carotid artery. The pressure of the second balloon group is 30 mmHg-35 mmHg (≈4.0-4.7 kPa). The pressure of the second balloon group within this range allows for tissue adhesion. This range falls within the standard pressure range of 30 mmHg-40 mmHg for skin grafting. The pressure of the third balloon group is 22 mmHg-28 mmHg (≈2.9-3.7 kPa).

[0119] In the first pressure control mode, setting the pressure of the first airbag group to 15-20 mmHg improves its physiological adaptability: the upper posterior neck (C1-C3 vertebral level) is close to the occipital and vertebral artery branches, with a skin thickness of only 1.5-2.0 mm, dense nerve endings, and the vertebral artery is a core channel for cerebral blood supply (blood flow of approximately 1000-1500 ml / min). This pressure range meets the requirements of "mild fixation + assisted repositioning"—the fat pad in the upper posterior neck is relatively thin (0.5-1.0 cm thick), so high pressure is not required; 15-20 mmHg can achieve mild compression and repositioning of the fat tissue, while the shaping effect of the thermoplastic layer prevents displacement.

[0120] In the first pressure control mode, setting the pressure of the second airbag group to 30-35 mmHg better meets clinical standards: after posterior cervical fat pad correction surgery, the skin and subcutaneous tissue need to adhere closely to promote healing and avoid dead space formation. 30-35 mmHg is within the "optimal range" of this standard (below 30 mmHg, the adhesion is not tight; above 35 mmHg, it may lead to local tissue ischemia). Within this pressure range, the second airbag group can also increase the activity of local fat-decomposing enzymes (such as lipoprotein lipase) while inhibiting fat cell proliferation. Targeting the core area of ​​the posterior cervical fat pad, this pressure can effectively penetrate the fat layer and exert a corrective effect.

[0121] In the first pressure control mode, when the pressure of the third airbag group is set to 22mmHg-28mmHg, a pressure difference of 2mmHg-13mmHg is formed between the third airbag group and the second airbag group (30mmHg-35mmHg), creating a gradient distribution of "high pressure in the middle → medium pressure in the lower part → low pressure in the upper part," avoiding muscle tension caused by sudden changes in local pressure (in clinical practice, a gradient pressure difference of 5mmHg-15mmHg is recommended). Setting the pressure of the third airbag group within the above range also allows the third airbag group to better adapt to the lower back neck region. The lower back neck region (at the level of the C7-T1 vertebrae) is close to the upper trapezius muscle in the back, with abundant muscle tissue (thickness 2.0cm-3.0cm). The pressure needs to be higher than the upper part to achieve support, but lower than the middle region—22-28mmHg can connect the middle pressure without exceeding the "comfort tolerance threshold" of the muscle tissue (the upper limit of muscle tissue's tolerance to continuous pressure is 30mmHg; exceeding this will lead to lactic acid accumulation and cause soreness).

[0122] During use, the pressure of each airbag group can be gradually increased from the lower limit of the set range to the target pressure value. For example, the first airbag group can start at 15 mmHg and gradually increase by 1-4 mmHg per day. After plastic surgery (such as fat pad removal or liposuction), the posterior neck tissue is in an inflammatory response period (1-7 days post-surgery), with vasodilation and tissue edema, significantly reducing its tolerance to pressure. Starting from the lower limit of the range can avoid pain or blood supply obstruction caused by compressing edematous tissue. The second pressure control mode is used for example in the patient's daily life. In the second pressure control mode, the pressure of the first airbag group is 8-12 mmHg. During daily use, the first airbag group is within this pressure range, which can ensure that the pressure applied to the posterior neck is strong enough to a certain extent, while also ensuring that the carotid artery can still supply blood under compression. The pressure of the second airbag group is 18mmHg-22mmHg. During daily use, the second airbag group can avoid muscle soreness within this pressure range. The pressure of the third airbag group is 15mmHg-18mmHg, so that the third airbag group and the second airbag group form a gentle pressure gradient.

[0123] After wearing the device in the second pressure control mode for the first preset time, reduce the pressure of the three airbags by at least 50% and maintain this reduced pressure for at least ten minutes to prevent obstruction of blood flow. The first preset time is, for example, one hour or one and a half hours.

[0124] The maximum pressure for the first airbag group is 25 mmHg, the maximum pressure for the second airbag group is 40 mmHg, and the maximum pressure for the third airbag group is 33 mmHg.

[0125] The area where the first airbag group is located corresponds to the carotid artery area, with a target pressure upper limit of 20 mmHg and an overpressure protection setting of 25 mmHg (25% higher than the upper limit).

[0126] The area where the second airbag unit is located corresponds to the core pressurization zone, with a target pressure limit of 35 mmHg and an overpressure protection setting of 40 mmHg (14% higher than the limit). Referring to the safe pressure limit of 40 mmHg for post-skin grafting (clinical consensus), 40 mmHg is the "ultimate safe pressure" in this scenario. Exceeding this pressure may lead to local tissue ischemia and necrosis. Therefore, the protection is triggered and the pressure is released to 35 mmHg, ensuring the pressurization effect while avoiding medical risks.

[0127] The third airbag group is located in the back muscle area, with a target pressure limit of 28 mmHg and an overpressure protection setting of 33 mmHg (18% higher than the limit). Based on the inventors' existing intraoperative compression observations, reversible blood flow decreases and pain scores increase in the back soft tissues around 35 mmHg. Setting the trigger value at 33 mmHg can preemptively cut off pressure escalation, reducing the risk of myofascial discomfort. Simultaneously, 33 mmHg is far below the rated pressure of 50 mmHg for medical-grade airbags, preserving sufficient material safety redundancy.

[0128] For example, to prevent excessive overall pressure caused by sensor failure at a single sub-airbag (such as failure to trigger protection), the upper limit average of the target pressure of the three sets of airbags is taken as a reference, and the overall overpressure protection trigger value of each sub-airbag is set to 35 mmHg (±1 mmHg). The protection action is set as follows: cut off the power supply of the air pump, all sub-airbags are simultaneously depressurized to 20 mmHg (safe reference pressure), the interactive component displays "system overpressure" and continuously alarms, and can only be restarted after manual reset, thus forming a dual redundancy of "independent protection + system protection".

[0129] In one embodiment, the temperature control component 710 is divided into three groups along the Y-axis direction. The three groups of temperature control components 710 are the first temperature control group, the second temperature control group, and the third temperature control group, respectively. For ease of understanding, it is assumed that there are three temperature control components 710, with one temperature control component 710 in each of the first, second, and third temperature control groups.

[0130] The temperature control modes of the temperature control layer 700 include a first temperature control mode, a second temperature control mode, and a third temperature control mode.

[0131] The first temperature control mode can be used for thermoplastic layer shaping. In the first temperature control mode, the second temperature control group first preheats and softens the thermoplastic layer 600 at the first heating temperature (e.g., 60℃-70℃, which allows the thermoplastic layer to soften and shape quickly without burning the skin due to excessive temperature) for a duration of the first preset heating time (e.g., 1min-3min). The third temperature control group then heats the thermoplastic layer 600 at the first heating temperature for a duration of the second preset heating time (e.g., 2min-10min) to deform the thermoplastic layer 600 as a whole. Then, the third temperature control group continuously cools the thermoplastic layer 600 at the second cooling temperature (e.g., 10℃-15℃) for a duration of the first preset cooling time (e.g., 0.3min-1min) to shape the thermoplastic layer 600 into a shape that matches the curvature of the skin at the back of the neck.

[0132] 60℃-70℃ is the softening temperature range of the thermoplastic layer (polycaprolactone thermoplastic board). At this temperature, the material can soften quickly and does not degrade. After fitting the physiological curve at the back of the neck, it can be cooled to below 40℃ within 30 seconds to 1 minute to set.

[0133] For example, in the first temperature control mode, the target temperature for heating and softening the thermoplastic layer is 65°C, the protection trigger temperature is 72°C (±1°C), and the protection action is: immediately cutting off the heating power supply of the semiconductor chip, displaying an "overheat alarm" on the interactive component, and automatically starting the cooling system. This is based on the fact that while the thermal degradation temperature of polycaprolactone thermoplastic sheets is ≥120°C, when the temperature exceeds 70°C, the material softening rate is too fast, easily leading to uncontrolled shaping operations (such as local adhesion or stretching deformation), and the skin surface temperature may exceed 45°C after being transferred through the heat insulation film, posing a risk of burns. The second temperature control mode can be used for neck heat therapy. In this mode, three temperature control groups continuously heat the preset area at a first heat therapy temperature (e.g., 40°C-43°C, which falls within the safe range of 40°C-45°C for medical heat therapy, promoting blood circulation in the neck and preventing burns). The duration is the first preset heat therapy time (e.g., 20-40 minutes), and the safe upper limit of the first heat therapy temperature is 47°C (±0.5°C).

[0134] For example, the safe temperature of the medical heat compress is 45°C, and the protection temperature is set to 47°C, which is 2°C higher than the safety limit. This allows for a sensor error margin (±0.5°C) and avoids the risk of burns caused by sensor drift. Therefore, if the temperature exceeds the limit during heat compress (the first heat compress temperature is greater than 47°C±0.5°C), the power is immediately cut off and the device switches to standby mode.

[0135] The third temperature control mode can be used for cold compresses on the back of the neck. In the third temperature control mode, the three temperature control groups continuously cool the preset area at the first cold compress temperature (e.g., 8℃-12℃, which is in line with the extended safety range of 0-10℃ for acute swelling cold compresses, taking into account both the swelling reduction effect and the need to prevent frostbite, and is suitable for the acute swelling period 1-3 days after surgery and daily muscle tension relief). The duration is the first preset cold compress duration (e.g., 10min-20min), and the lower limit of the first cold compress temperature is 4℃ (±0.5℃).

[0136] The safe lower limit for cold compresses for acute swelling is 0℃ (to avoid frostbite). In the third temperature control mode, considering factors such as sensor error, the protection temperature is set to 4℃ (±0.5℃), which is 4℃ higher than 0℃. This allows for sufficient margin for sensor error and prevents material embrittlement caused by excessive cooling of the flexible semiconductor (the bending strength of polycaprolactone material decreases below 0℃, making it prone to cracking). Therefore, during the cold compress process, when the first cold compress temperature is lower than the safe lower limit (4℃±0.5℃), the cooling is immediately stopped and natural warming is initiated (to avoid rapid heating that could cause changes in material stress). At the same time, the interactive component 910 issues an alarm.

[0137] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0138] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A cervical fat pad correction device, characterized in that, include: Shoulder strap (100); Mounting housing (200) is disposed on the shoulder strap (100); An airbag layer (400) is disposed within the mounting housing (200). The airbag layer (400) includes a plurality of sub-airbags (410). The plurality of sub-airbags (410) are distributed sequentially along the Y-axis direction. A spiral coil (430) is disposed in each sub-airbag (410). Air is inflated into the spiral coil (430), and the spiral coil (430) expands to inflate the sub-airbag (410). The expansion of the sub-airbag (410) applies pressure to a predetermined part. A temperature control layer (700) and a thermoplastic layer (600) are disposed within the mounting housing (200). The temperature control layer (700) includes a plurality of temperature control components (710). The plurality of temperature control components (710) are sequentially distributed on the thermoplastic layer (600) along the Y-axis direction. The temperature control components (710) are used for hot / cold compressing of the preset area or shaping of the thermoplastic layer (600). The temperature control components (710), the thermoplastic layer (600), and the airbag layer (400) are sequentially distributed along the X-axis direction. The mounting shell (200) is provided with a skin contact port (210), and a skin-adhesive layer (300) is provided at the skin contact port (210). The airbag layer (400) and the skin-adhesive layer (300) are distributed sequentially along the X-axis direction.

2. The posterior neck fat pad correction device according to claim 1, characterized in that, The mounting housing (200) is provided with an assembly port (220), and an elastic wear-resistant layer (800) is detachably provided at the assembly port (220) of the mounting housing (200). The elastic wear-resistant layer (800) is used to open or close the assembly port (220).

3. The posterior neck fat pad correction device according to claim 1, characterized in that, The thermoplastic layer (600) is provided with circular or polygonal through holes.

4. The posterior neck fat pad correction device according to claim 1, characterized in that, The temperature control component (710) includes a semiconductor wafer disposed on the thermoplastic layer (600).

5. The posterior neck fat pad correction device according to claim 1, characterized in that, The sub-airbag (410) is provided with a first pressure sensor (420).

6. The posterior neck fat pad correction device according to claim 2, characterized in that, The airbag layer (400) is replaced with a hot compress pack.

7. The posterior neck fat pad correction device according to claim 1, characterized in that, It also includes a heat insulation film (500) disposed between the thermoplastic layer (600) and the airbag layer (400).

8. The posterior neck fat pad correction device according to claim 1, characterized in that: Multiple sub-airbags (410) are divided into three groups along the Y-axis for pressure control. Along the Y-axis, the three groups of sub-airbags (410) are the first airbag group, the second airbag group, and the third airbag group, respectively. The sub-airbag (410) pressure control mode includes a first pressure control mode and a second pressure control mode. In the first pressure control mode, the pressure of the first airbag group is 15 mmHg-20 mmHg, the pressure of the second airbag group is 30 mmHg-35 mmHg, and the pressure of the third airbag group is 22 mmHg-28 mmHg. In the second pressure control mode, the pressure of the first airbag group is 8 mmHg-12 mmHg, the pressure of the second airbag group is 18 mmHg-22 mmHg, and the pressure of the third airbag group is 15 mmHg-18 mmHg. After wearing the second pressure control mode for the first preset time, the pressure of the three airbag groups needs to be reduced by more than 50%, and the reduced pressure state should be maintained for at least ten minutes. The maximum pressure for the first airbag group is 25 mmHg, the maximum pressure for the second airbag group is 40 mmHg, and the maximum pressure for the third airbag group is 33 mmHg.

9. The posterior neck fat pad correction device according to claim 8, characterized in that: The temperature control assembly (710) is divided into three groups along the Y-axis direction. The three groups of temperature control assemblies (710) are the first temperature control group, the second temperature control group, and the third temperature control group, respectively. The temperature control modes of the temperature control layer (700) include a first temperature control mode, a second temperature control mode and a third temperature control mode. In the first temperature control mode, the second temperature control group first preheats and softens the thermoplastic layer (600) for a first preset heating time at the first heating temperature. Then, the third temperature control group heats the thermoplastic layer (600) for a second preset heating time at the first heating temperature, causing the thermoplastic layer (600) to deform as a whole. Then, the third temperature control group cools the thermoplastic layer (600) for a first preset cooling time at the second cooling temperature, so that the thermoplastic layer (600) is shaped into a shape that matches the curvature of the skin at the back of the human neck. In the second temperature control mode, the three temperature control groups continuously heat the preset area at the first heat compress temperature for the first preset heat compress duration, with the upper limit of the first heat compress temperature being 47℃. In the third temperature control mode, the three temperature control groups continuously cool the preset area at the first cold compress temperature for a first preset cold compress duration, with the lower limit of the first cold compress temperature being 4℃.

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