Lip plumper

Abstract

This invention provides a lip plumping device, belonging to the field of cosmetic technology. The lip plumping device includes: a lip applicator with a cavity for accommodating the lips; a shape memory actuator extending circumferentially along and attached to the sidewall of the cavity, the shape memory actuator having a low-temperature phase and a high-temperature phase; and a heating assembly for heating the shape memory actuator to a phase transition temperature to trigger a phase transition; wherein the shape memory actuator is in an expanded state during the low-temperature phase and contracts towards the center of the cavity during the high-temperature phase to compress the lips. The lip plumping device of this application embodiment contributes to fuller lip area.

Description

Technical Field

[0001] This application belongs to the field of beauty technology, and more specifically, relates to a lip plumping device. Background Technology

[0002] A lip plumping device is a beauty instrument used to improve the shape of the lips. It mainly works by physically causing the lip tissue to become congested and swollen, thereby achieving a fuller lip effect. Most lip plumping devices on the market currently use the principle of negative pressure suction. By creating a negative pressure environment between the lip instrument and the lips, the negative pressure causes the capillaries in the lips to dilate and tissue fluid to seep out, thus achieving a temporary lip plumping effect.

[0003] However, existing negative pressure lip augmentation devices have significant technical shortcomings. On the one hand, negative pressure suction mainly acts on the outer surface of the lips, causing passive congestion of the lips through external pulling. Blood is distributed relatively evenly within the lip tissue, making it difficult for blood to flow specifically towards the lip margin (the outermost edge of the lips), where fullness is crucial for the three-dimensionality and aesthetics of the lips. On the other hand, the negative pressure is concentrated near the lip opening, limiting its squeezing effect on the lateral lip tissues and failing to effectively promote blood flow from the inner lip to the outer lip, resulting in less than ideal overall lip fullness.

[0004] Therefore, there is an urgent need for a new technology to solve the technical problem in existing technologies that make it difficult to effectively direct blood flow from the lips to the lip margins to achieve fuller lips. Summary of the Invention

[0005] This application provides a lip plumping device that helps to plump up the lip area.

[0006] The technical solution adopted in this application embodiment is: to provide a lip plumping device, including:

[0007] The lip organ has a cavity for accommodating the lips;

[0008] A shape memory actuator extends circumferentially along and is attached to the sidewall of the cavity, the shape memory actuator having a low-temperature phase and a high-temperature phase; and

[0009] A heating component is used to heat the shape memory actuator to a phase transition temperature to trigger a phase transition;

[0010] The shape memory actuator is in an expanded state during the low-temperature phase and contracts towards the center of the cavity during the high-temperature phase to compress the lip.

[0011] Furthermore, the shape memory actuator has a lip-shaped sheet structure that adapts to the contour of the lip, and the beginning and end are not closed to form a first slit, so as to allow the shape memory actuator to stretch and deform circumferentially during the phase transition.

[0012] Furthermore, the heating component is a flexible electric heating sheet that is attached to the shape memory actuator, and the flexible electric heating sheet is not closed at both ends and has a second slit. The two ends of the flexible electric heating sheet at the second slit are connected by an elastic element so as to allow the flexible electric heating sheet to deform synchronously with the circumferential expansion and contraction of the shape memory actuator.

[0013] Furthermore, the lip plumping device also includes a flexible buffer layer, which is disposed on the cavity wall of the cavity. The shape memory actuator is disposed on the inner side of the flexible buffer layer, and a groove is formed on the side of the shape memory actuator opposite to the flexible buffer layer. The heating component is embedded in the groove.

[0014] Furthermore, the shape memory actuator is provided with a mounting hole, and a first magnet is embedded in the mounting hole;

[0015] The lip device is provided with a second magnet, which magnetically attracts the first magnet to allow the shape memory actuator to be detachably connected to the inner wall of the cavity of the lip device.

[0016] The inner wall of the cavity is also provided with exposed electrode contacts. When the shape memory actuator is magnetically connected to the inner wall of the cavity, the electrode contacts are electrically connected to the heating component.

[0017] Furthermore, the cavity has an open end and an end wall opposite to the open end;

[0018] The shape memory actuator is disposed adjacent to the open end, and there is a gap between the shape memory actuator and the end wall to accommodate the lip.

[0019] Furthermore, the shape memory actuator takes the form of a trumpet or U-shape that gradually expands from the open end to the end wall during the high-temperature phase, so that the blood in the lips converges towards the lip edge.

[0020] Furthermore, it also includes a negative pressure generating device, which is connected to the cavity and is used to create a negative pressure in the cavity to draw the lips into the cavity.

[0021] Furthermore, the lip plumping device also includes:

[0022] The housing has an installation port, and the negative pressure generating device is located inside the housing;

[0023] An end cap is provided at the mounting port, and the lip device is detachably installed on the end cap. The end cap is provided with a first air passage, and the lip device is provided with a second air passage communicating with the cavity. The first air passage connects the negative pressure generating device and the second air passage.

[0024] Furthermore, the lip plumping device also includes a phototherapy component, which is installed in any one of the lip applicator, the end cap, and the housing. The lip applicator has a light-transmitting area, which is directly opposite the phototherapy component.

[0025] The beneficial effects of the lip plumping device provided in this application embodiment are as follows: In the lip plumping device provided in this application embodiment, by extending the shape memory actuator circumferentially along the sidewall of the cavity and attaching it to the sidewall, and using a heating component to heat it to the phase transition temperature, the shape memory actuator changes from a low-temperature unfolded state to a high-temperature contracted state. Since the shape memory actuator is arranged around the sidewall of the cavity, its contraction direction points towards the center of the cavity, thereby applying a uniform radial squeezing force to the lips placed in the cavity. This radial squeezing method directly acts on the lateral tissue of the lips, forcing the blood on the inner side of the lips to flow outward under continuous pressure, concentrating and rushing towards the lip edge area, effectively promoting the fullness and plumpness of the lip edge area, and significantly improving the three-dimensionality and fullness of the lips. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A three-dimensional structural schematic diagram of the lip plumping device provided in the embodiments of this application;

[0028] Figure 2 A cross-sectional view of the lip plumping device provided in an embodiment of this application;

[0029] Figure 3 A schematic diagram of the lip plumping device provided in this embodiment of the application after the lip applicator has been removed;

[0030] Figure 4 This is a schematic diagram of the lip plumping device provided in the embodiments of this application from another angle after the lip applicator is removed;

[0031] Figure 5 An exploded view of a lip plumping device provided in an embodiment of this application.

[0032] The following are the labeling elements in the figure:

[0033] 1. Lip apparatus; 11. Cavity; 111. Open end; 112. End wall; 12. Second airway; 13. Translucent area

[0034] 2. Shape memory actuator; 21. First slit; 22. Mounting hole; 23. First magnet; 24. Groove;

[0035] 3. Heating component; 31. Second slit; 32. Elastic element;

[0036] 4. Flexible buffer layer;

[0037] 5. Second magnet;

[0038] 6. Electrode contacts;

[0039] 7. Negative pressure generating device;

[0040] 8. Housing; 81. Mounting port; 82. Protective cover;

[0041] 9. End cap; 91. First airway;

[0042] 10. Phototherapy components. Detailed Implementation

[0043] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0044] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0045] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and 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.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0047] Please see Figure 1 and Figure 2 The lip plumping device provided in the embodiments of this application will now be described. The lip plumping device provided in the embodiments of this application includes a lip applicator 1, a shape memory actuator, and a heating assembly 3.

[0048] Reference Figure 1 and Figure 2 The lip device 1 has a cavity 11 for accommodating the lips. The lip device 1 is a container component for accommodating and conforming to the lips, and its overall shape is an arc-shaped or elliptical cup-shaped structure adapted to the contour of the human lip. The cavity 11 is preferably a groove 24 that matches the shape of the upper lip and / or lower lip, so as to completely enclose the lip tissue during operation. That is, the lip device 1 can be a one-piece structure, accommodating both the upper and lower lips; or it can be divided into two independent parts, an upper lip device 1 and a lower lip device 1, which are operated separately for the upper and lower lips respectively. It is understood that one end of the lip device 1 has an open end 111 for the lips to enter the cavity 11.

[0049] Reference Figure 1 and Figure 2 The shape memory actuator 2 extends circumferentially along and is attached to the sidewall of the cavity. The shape memory actuator 2 has a low-temperature phase and a high-temperature phase. The shape memory actuator 2 is made of a material with shape memory effect, such as a nickel-titanium alloy, a copper-based shape memory alloy, or an iron-based shape memory alloy. The shape memory actuator 2 is not a single, independent ring, but rather conforms to the contour of the inner wall of the cavity 11. It can be elliptical or lip-shaped, forming a roughly circumferential strip or sheet-like structure. Its beginning and end are not necessarily closed; openings can be left to allow circumferential expansion and contraction. The shape memory actuator 2 can be a single lip-shaped sheet that conforms to the contour of the sidewall of the cavity 11, fixed to the sidewall by bonding or insert molding; the shape memory actuator 2 can also be a mesh-like sleeve woven from multiple strips of shape memory alloy wires, fitted onto the outside of the sidewall of the cavity 11; the shape memory actuator 2 can also be multiple independent partitioned sheet structures, corresponding to the left, right and central areas of the lip respectively, to achieve independent partition control. The shape memory actuator 2 is configured to have two phases: at room temperature or below the phase transition temperature, it is in a relaxed unfolded state with a relatively flat shape, facilitating lip insertion; when heated above the phase transition temperature, it transforms into a high-temperature phase, generating recovery stress within the material, driving it to transform into a preset compressed shape.

[0050] Reference Figure 2 and Figure 3The heating component 3 is used to heat the shape memory actuator 2 to the phase transition temperature to trigger a phase transition. The heating component 3 is coupled to the shape memory actuator 2 by thermal conduction. The heating component 3 can be a flexible electric heating sheet attached to the surface of the shape memory actuator 2, with good bending performance; the heating component 3 can also be a heating coil made of resistance wire, embedded on the inner or outer side of the shape memory actuator 2; the heating component 3 can also be a ceramic heating sheet, a carbon fiber heating film, or a positive temperature coefficient thermistor heating element, etc.

[0051] Based on the above structure, the working process of the lip plumping device in this application embodiment is as follows:

[0052] 1. When in use, the user inserts the lips into the cavity 11 through the opening of the lip device 1, so that the lips are completely contained in the cavity 11. At this time, the shape memory actuator 2 is in the unfolded state at low temperature, and there is enough space inside the cavity 11 for the lips to enter naturally.

[0053] 2. Subsequently, the heating component 3 is activated, and heat is conducted through the contact surface to the shape memory actuator 2, which is in close contact with it. When the temperature of the shape memory actuator 2 reaches its phase transition temperature point, it drives the shape memory actuator 2 to transform into a pre-set high-temperature phase morphology. Since the shape memory actuator 2 extends circumferentially along the sidewall of the cavity 11 and is attached to the sidewall, its contraction direction naturally points to the central axis of the cavity 11, thereby applying a uniform radial extrusion force to the lips, directly acting on the lateral tissues of the lips. This forces the blood on the inner side of the lips to flow outward under continuous pressure, concentrating and rushing towards the lip edge area, promoting overall lip congestion and tissue fluid exudation, thereby achieving a full and plump lip effect.

[0054] 3. When the preset heating time is reached or the user actively turns off the heating component 3, the heating component 3 stops supplying heat, and the shape memory actuator 2 gradually cools down during the natural cooling process. When the temperature drops below the phase transition temperature, the shape memory actuator 2 returns to the unfolded state of the low-temperature phase, and its radial extrusion force on the lip is released, and the lip tissue gradually returns to its normal state.

[0055] The entire process achieves active control of radial compression of the lips through the controllable contraction and recovery of the shape memory actuator 2. Compared with traditional negative pressure suction or mechanical massage, this radial compression mechanism can act more directly and evenly on the lateral tissues of the lips, effectively promoting blood flow to the outside, thereby significantly improving the fullness and three-dimensionality of the lips.

[0056] The shape memory actuator 2 can take the following specific structural forms:

[0057] In some embodiments, the shape memory actuator 2 may also be a mesh structure made of multiple strips of shape memory alloy, which achieves uniform pressure on the lip through the overall contraction of the mesh.

[0058] In some embodiments, the shape memory actuator 2 can also be a split multi-piece independent sheet structure, corresponding to different areas of the lip such as the cupid's bow and corners of the lip, to achieve zoned control.

[0059] Reference Figure 2 and Figure 3 In some embodiments, the shape memory actuator 2 is a lip-shaped sheet structure adapted to the lip contour, and the beginning and end are not closed to form a first slit 21, so as to allow the shape memory actuator 2 to stretch and deform circumferentially during the phase transition.

[0060] The shape memory actuator 2 is made of a material with shape memory effect, such as nickel-titanium alloy, copper-based shape memory alloy, or iron-based shape memory alloy. In this embodiment, the shape memory actuator 2 is constructed as a lip-shaped sheet structure adapted to the contour of the lips. This lip-shaped sheet structure is generally encircling, capable of simultaneously covering and wrapping the outer areas of both the upper and lower lips, forming a continuous contour that is roughly elliptical or "O" shaped. It should be noted that this lip-shaped sheet structure is not a completely closed ring; its beginning and end are not closed. Instead, a first slit 21 is formed at a certain position in the circumferential direction, such as at the corner of the lip or at the center of the lip. The presence of the first slit 21 means that the shape memory actuator 2 does not form a rigid closed loop in the circumferential direction, but rather forms a C-shaped or U-shaped structure with an opening. The first slit 21 can be a straight slit that runs through the thickness direction of the shape memory actuator 2; the first slit 21 can also be a non-contact gap formed by the overlapping of the two ends of the shape memory actuator 2; the first slit 21 can also be a flexible connecting segment formed by filling the two ends of the shape memory actuator 2 with flexible material.

[0061] In this embodiment, the shape memory actuator 2, through the first slit 21, can freely expand and contract circumferentially during phase transition. When the shape memory actuator 2 contracts in the high-temperature phase, the width of the slit decreases accordingly, allowing for adaptive changes in the overall circumferential dimensions. When the shape memory actuator 2 returns to the low-temperature phase expansion state, the width of the slit expands accordingly, avoiding structural stress caused by rigid constraints or excessive binding of the lips. Furthermore, the presence of the first slit 21 provides the shape memory actuator 2 with a certain elastic margin in the circumferential direction, allowing for fine-tuning according to the actual contour and size of the lips. This ensures effective compression force while avoiding localized tightness or discomfort that may occur due to the rigid annular structure. When the shape memory actuator 2 returns to the low-temperature phase, the two ends at the first slit 21 separate again, and the circumferential dimension increases accordingly, providing sufficient space for lip removal. Through the cooperation of this lip-shaped sheet structure and the first slit 21, the shape memory actuator 2 achieves overall enveloping compression of the upper and lower lips, while ensuring the smoothness of the contraction process and wearing comfort.

[0062] Furthermore, referring to Figure 2 and Figure 3 The heating component 3 is a flexible electric heating sheet that is attached to the shape memory actuator 2. The flexible electric heating sheet is not closed at both ends and has a second slit 31. The two ends of the flexible electric heating sheet at the second slit 31 are connected by an elastic element 32 to allow the flexible electric heating sheet to deform synchronously with the circumferential expansion and contraction of the shape memory actuator 2.

[0063] The flexible electric heating element is attached to the surface of the shape memory actuator 2 in a bonding manner so as to efficiently conduct heat to the shape memory actuator 2.

[0064] The flexible electric heating element possesses excellent bending performance and flexibility, and can deform accordingly to the shape memory actuator 2. The flexible electric heating element can be a polyimide film heating element, composed of a polyimide substrate and etched metal resistor circuits, characterized by its thinness, lightness, and bendability; it can also be a silicone rubber heating element, using silicone rubber as the substrate and embedding nickel-chromium alloy resistance wires, exhibiting good flexibility and thermal conductivity; or it can be a carbon fiber heating film, utilizing the conductive and heating properties of carbon fiber to create a thin sheet structure, exhibiting excellent flexibility and uniform heating. In this embodiment, the flexible electric heating element is constructed with a similar contour shape to the shape memory actuator 2, also exhibiting a lip-shaped sheet structure, and with a second slit 31 formed at both ends. The position of the second slit 31 corresponds to the first slit 21 on the shape memory actuator 2, allowing both to maintain synchronization during contraction. The second slit 31 can specifically be a straight gap, an interlaced structure, or a flexible material filling section, providing space for the circumferential expansion and contraction of the flexible electric heating element.

[0065] The elastic element 32 provides a recoverable connection force when the flexible electric heating element undergoes circumferential expansion and contraction deformation with the shape memory actuator 2. The elastic element 32 can be a miniature helical spring, a serpentine spring, or an elastic rubber strip. The elastic element 32 forms a telescoping connection structure between its two ends at the second slit 31. When the flexible electric heating element contracts with the shape memory actuator 2, the slit width decreases, and the elastic element 32 is compressed accordingly. When the shape memory actuator 2 returns to its unfolded state, the elastic element 32 uses its own elastic restoring force to open the two ends of the slit, allowing the flexible electric heating element to synchronously return to its original contour. This ensures that the flexible electric heating element is always tightly attached to the surface of the shape memory actuator 2, avoiding problems such as wrinkles, delamination, or localized overheating caused by asynchronous deformation.

[0066] Furthermore, referring to Figure 1 and Figure 2 The lip plumping device also includes a flexible buffer layer 4, which is disposed on the cavity wall of the cavity 11. The shape memory actuator 2 is disposed on the inner side of the flexible buffer layer 4. The side of the shape memory actuator 2 opposite to the flexible buffer layer 4 is recessed to form a groove 24. The heating component 3 is embedded in the groove 24.

[0067] The flexible buffer layer 4 forms a flexible buffer interface between the lips and the shape memory actuator 2, improving wearing comfort and dispersing pressure. The flexible buffer layer 4 can be a medical-grade silicone layer, a thermoplastic elastomer layer, or a memory foam layer. In this embodiment, the flexible buffer layer 4 is attached to the entire inner wall surface of the cavity 11, covering all areas that the lips may come into contact with, forming a continuous protective interface.

[0068] Reference Figure 2 and Figure 3 The groove 24 is used to accommodate and position the heating component 3. The groove 24 can be a meandering serpentine groove, a group of grooves composed of multiple interconnected grid-like recesses, or a continuously encircling annular groove, running along the circumference of the shape memory actuator 2, allowing the heating component 3 to be arranged in a surrounding manner. The bottom wall of the groove 24 can be flat or have a microstructure texture to increase the contact area with the heating component 3 and improve heat conduction efficiency.

[0069] During operation, the flexible buffer layer 4 directly contacts the lip tissue, and the heating component 3 is embedded in the groove 24 of the shape memory actuator 2. When the heating component 3 is powered on, the heat is rapidly and evenly transferred to the entire shape memory actuator 2 through the groove wall 24, triggering its transformation from a low-temperature phase to a high-temperature phase. When the shape memory actuator 2 contracts, the flexible buffer layer 4 acts as a buffer and pressure dispersion between it and the lip, so that the squeezing force is evenly applied to the middle and rear area of ​​the lip. At the same time, it avoids the slight unevenness that may exist on the surface of the shape memory actuator 2 from irritating the lip, significantly improving wearing comfort and safety.

[0070] Furthermore, referring to Figure 2 and Figure 3 The flexible buffer layer 4 is a thermally conductive silicone layer. That is, the thermally conductive silicone layer possesses both soft cushioning and efficient thermal conductivity. The thermally conductive silicone layer can be a regular thermally conductive silicone sheet, or a fiber-reinforced thermally conductive silicone with embedded glass fiber or carbon fiber mesh to enhance tear resistance; it can also be a microporous foamed thermally conductive silicone, forming a micro-bubble structure within the material, possessing both good compression resilience and thermal conductivity. In this embodiment, one side of the thermally conductive silicone layer is attached to the cavity wall of the cavity 11, and the other side is attached to the surface of the shape memory actuator 2, thereby establishing a heat conduction channel between the shape memory actuator 2 and the lip.

[0071] When the heating component 3 is powered on and heats up, the heat is first conducted to the shape memory actuator 2, raising its temperature and triggering phase change contraction. Simultaneously, the heat from the surface of the shape memory actuator 2 is transferred through the contact surface to the thermally conductive silicone layer that is in close contact with it. Because the thermally conductive silicone layer is filled with highly thermally conductive filler, the heat can quickly pass through the layer and be transferred to the surface of the lip tissue in contact with it. In this way, the lips are simultaneously compressed by the shape memory actuator 2 and continuously heated by the thermally conductive silicone layer. This synergistic effect of compression and heating results in a significant enhancement of lip plumping. The compression forces blood in the middle and posterior part of the lips to flow directionally towards the lip margin, while the heating causes local vasodilation and accelerated blood circulation, while also softening and increasing the elasticity of the lip tissue, making it easier to deform and redistribute blood under compression. The two work together to allow blood to flow more smoothly to the lip margin area, resulting in a fuller and longer-lasting plumping effect.

[0072] Furthermore, referring to Figure 3 , Figure 4 and Figure 5The shape memory actuator 2 is provided with mounting holes 22, and a first magnet 23 is embedded in the mounting holes 22. The mounting holes 22 can be through holes that penetrate the thickness of the shape memory actuator 2, or they can be blind holes that do not penetrate. There can be one or more mounting holes 22, distributed at different positions on the shape memory actuator 2, for example, one at the corner of the lip, one at the bead of the lip, or one at the center of the lip, so as to achieve uniform magnetic attraction and fixation.

[0073] The lip device 1 contains a second magnet 5, which magnetically attracts the first magnet 23, allowing the shape memory actuator 2 to be detachably connected to the inner wall of the cavity 11 of the lip device 1. The first magnet 23 and the second magnet 5 cooperate to achieve a magnetic connection, corresponding to each other in spatial position. The magnetic attraction force detachably fixes the shape memory actuator 2 to the inner wall of the cavity 11 of the lip device 1. The magnets can be neodymium iron boron permanent magnets, ferrite permanent magnets, or samarium cobalt permanent magnets. The number of first magnets 23 and second magnets 5 can be one-to-one or many-to-many.

[0074] Reference Figure 4 The inner wall of the cavity 11 is also provided with exposed electrode contacts 6. When the shape memory actuator 2 is magnetically connected to the inner wall of the cavity 11, the electrode contacts 6 are electrically connected to the heating assembly 3. The electrode contacts 6 are used to form an electrical connection with the heating assembly 3 when the shape memory actuator 2 is connected to the lip device 1. The electrode contacts 6 are exposed on the inner wall of the cavity 11 so as to contact the corresponding contacts on the heating assembly 3. The electrode contacts 6 can be elastic probes, metal springs, or flat contacts. The number of electrode contacts 6 is usually two or more, corresponding to the positive and negative terminals of the heating assembly 3 respectively, forming a complete power supply circuit. The position of the electrode contacts 6 matches the position of the corresponding contacts on the heating assembly 3 to ensure that the two are naturally aligned and pressed together during magnetic connection.

[0075] During assembly, the user places the shape memory actuator 2 into the cavity 11 of the lip unit 1. Under the action of magnetic attraction, the first magnet 23 and the second magnet 5 automatically engage, precisely positioning and fixing the shape memory actuator 2 to a predetermined position on the inner wall of the cavity 11. Simultaneously, with the pull of the magnetic attraction, the heating component 3 contacts on the shape memory actuator 2 naturally contact the electrode contacts 6 on the inner wall of the cavity 11, forming a reliable electrical connection under the magnetic pressure. When it is necessary to replace the shape memory actuator 2, the user only needs to apply a moderate pulling force to overcome the magnetic attraction to remove the shape memory actuator 2 from the inner wall of the cavity 11. The entire process requires no tools and is simple and quick.

[0076] Furthermore, the cavity 11 has an open end 111 and an end wall 112 opposite to the open end 111. The open end 111 is used for the lip to enter the cavity 11, and the end wall 112 is located at the innermost side of the cavity 11. When the lip is fully inserted, the lip edge naturally abuts against the vicinity of the end wall 112.

[0077] The shape memory actuator 2 is disposed adjacent to the opening end 111, and a gap D is provided between the shape memory actuator 2 and the end wall 112 to accommodate the lip edge. A spatial distance is maintained between the shape memory actuator 2 and the end wall 112, which forms the gap D. The specific value of the gap D can be optimized according to the anatomical dimensions of the lip, for example, between 5 mm and 15 mm. Its function is to ensure that when the lip is fully inserted into the cavity 11, the lip edge is precisely located within the area corresponding to the gap D, thereby preventing the shape memory actuator 2 from directly compressing the lip edge.

[0078] When the user inserts their lips into the cavity 11 through the opening 111, the lips gradually move towards the end wall 112 until the lip edge reaches or lightly touches the end wall 112. Because the shape memory actuator 2 is located near the opening 111, there is a gap D between it and the end wall 112. Therefore, the lip edge is precisely located within the space corresponding to this gap D, and the shape memory actuator 2 corresponds to the middle and posterior region of the lip, i.e., near the root of the mouth. After the heating assembly 3 is activated, the shape memory actuator 2 heats up and contracts, applying radial pressure to the middle and posterior part of the lip in contact with it. The lip edge located within the gap D, without the coverage of the shape memory actuator 2, is almost unaffected by direct pressure. This structural arrangement creates a clear pressure gradient between the middle and posterior part of the lip and the lip edge. The middle and posterior part is actively compressed, increasing the internal pressure, while the pressure in the lip edge region is relatively low. Under pressure, blood naturally flows directionally from the middle and posterior part towards the lip edge, concentrating and filling the lip edge region. Meanwhile, since the lip edge is contained within the gap D, the direct pressure on the lip edge is avoided when the shape memory actuator 2 contracts, preventing blood from being squeezed out of the lip edge area. This ensures that blood can flow smoothly into and remain in the lip edge tissue, thereby precisely achieving significant fullness of the lip edge and effectively solving the problem of poor lip augmentation effect in the lip edge area in the existing technology.

[0079] Preferably, the shape memory actuator 2, during the high-temperature phase, takes the form of a trumpet or U-shape that gradually expands from the open end 111 to the end wall 112, so that blood from the lips converges towards the lip margin. That is, the shape memory actuator 2 is relatively narrow near the open end 111 and relatively wide near the end wall 112. Specifically, the shape memory actuator 2 can be a conical trumpet shape, with the cross-sectional diameter of the shape memory actuator 2 increasing linearly from the open end 111 to the end wall 112, forming a smooth conical transition; the shape memory actuator 2 can also be a stepped trumpet shape, with its inner wall composed of multiple segments with different tapers, forming a stepped, gradually expanding profile. The U-shaped structure is a special form of the trumpet shape, with a U-shaped cross-section, and the two side walls gradually opening outward from the open end 111 to the end wall 112, forming a cross-sectional profile similar to the letter "U". Whether it is trumpet-shaped or U-shaped, its core feature is that when the shape memory actuator 2 is in the high-temperature phase, its inner surface forms an expanding inclined surface that gradually moves away from the central axis of the cavity 11 from the opening end 111 toward the end wall 112, making the effective space of the cavity 11 near the end wall 112 larger than the effective space near the opening end 111.

[0080] When the shape memory actuator 2 is heated above the phase transition temperature and transforms into a high-temperature phase, it gradually contracts from its expanded state in the low-temperature phase and forms a trumpet or U-shape. Because the portion of the shape memory actuator 2 near the opening end 111 narrows, the compressive force it exerts on the middle and rear region of the lip is relatively concentrated and larger; while the portion near the end wall 112 widens, and the compressive force it exerts on the lip edge region is relatively dispersed and smaller. That is, the compressive force reaches its peak in the middle and rear of the lip, gradually decreasing as the position moves closer to the end wall 112, reaching its lowest point in the lip edge region. The pressure difference between the two naturally creates a driving force for the directional flow of blood, causing blood to flow more concentratedly and efficiently to the lip edge region, thereby achieving significant fullness in the lip edge region.

[0081] Furthermore, referring to Figure 2 and Figure 5The lip plumping device also includes a negative pressure generating device 7, which is connected to the cavity 11 and is used to create negative pressure within the cavity 11 to draw the lips into the cavity 11. The negative pressure generating device 7 uses suction to lower the air pressure inside the cavity 11 compared to the external atmospheric pressure, thereby drawing lip tissue into the cavity 11 and making it fit tightly against the cavity wall. Specifically, the negative pressure generating device 7 can be a miniature electric vacuum pump, with a built-in DC motor driving the diaphragm or piston to reciprocate, continuously generating stable negative pressure suction; this is commonly found in portable beauty devices. Alternatively, the negative pressure generating device 7 can be a Venturi vacuum generator, utilizing the entrainment effect generated when compressed air flows through a converging nozzle to create negative pressure; this has a simple structure and no moving parts. The negative pressure generating device 7 can also be a manual suction cylinder structure, where the user manually pushes and pulls the piston to generate negative pressure; this is inexpensive and requires no power supply. The negative pressure generating device 7 is installed inside the housing 8 of the lip plumper and is connected to the cavity 11 of the lip applicator 1 via a pipeline. A one-way valve can be installed in the connection channel between the negative pressure generating device 7 and the cavity 11 to prevent accidental leakage of negative pressure. In this embodiment, the negative pressure generating device 7 and the cavity 11 are connected by a flexible hose or an air passage formed inside the housing 8 to ensure unobstructed airflow and facilitate assembly.

[0082] During operation, after the negative pressure generating device 7 is activated, it suctions the cavity 11 of the lip device 1, causing the air pressure inside the cavity 11 to drop rapidly and create a negative pressure environment. The lip tissue is evenly drawn into the cavity 11, precisely positioning the lips to a predetermined position within the cavity 11, ensuring that the middle and rear parts of the lips correspond precisely to the area where the shape memory actuator 2 is located, while the lip edge reaches near the end wall 112. Furthermore, the negative pressure ensures a tight fit between the lip tissue and the cavity wall, eliminating gaps between them and ensuring that the squeezing force of the shape memory actuator 2 can act directly and evenly on the lip surface when it contracts, avoiding a decrease in pressure transmission efficiency due to poor fit. Once the negative pressure stably adheres the lips to the cavity 11, the heating component 3 is activated, and the shape memory actuator 2 heats up and contracts, applying squeezing force to the middle and rear parts of the lips. The negative pressure continuously fixes the lips within the cavity 11, preventing displacement or slippage during squeezing; and the squeezing further promotes blood flow towards the lip edge. The combination of these two elements results in more efficient directional blood flow and a more significant plumping effect in the lip area. Furthermore, the negative pressure itself promotes local capillary dilation and accelerates blood circulation, creating a synergistic effect with the squeezing action of the shape memory actuator 2, further enhancing the lip-plumping effect.

[0083] Furthermore, referring to Figure 2 and Figure 5 The lip plumping device also includes a housing 8 and an end cap 9.

[0084] The housing 8 has a mounting port 81, and the negative pressure generating device 7 is located inside the housing 8. An installation space is formed inside the housing 8 to accommodate the negative pressure generating device 7, control module, battery, and other core components. The mounting port 81 is an opening structure that penetrates the wall of the housing 8, used to install the end cap 9 and connect it to the lip device 1. The shape of the mounting port 81 matches the shape of the end cap 9, such as circular, elliptical, or irregular, and its periphery can be provided with slots, threads, or magnetic structures for a detachable fixed connection with the end cap 9.

[0085] An end cap 9 is located at the mounting port 81, and the lip device 1 is detachably mounted on the end cap 9. The end cap 9 has a first air passage 91, and the lip device 1 has a second air passage 12 communicating with the cavity 11. The first air passage 91 connects the negative pressure generating device 7 and the second air passage 12. The end cap 9 is located at the mounting port 81 of the housing 8, serving multiple functions including sealing the mounting port 81, positioning the lip device 1, and constructing an air passage. The end cap 9 is fixed to the mounting port 81 by a snap-fit, thread, or magnetic structure. In one embodiment, a connecting post protrudes from the center of the end cap 9 for inserting the lip device 1. The end cap 9 has a first air passage 91 inside or on its surface. One end of the first air passage 91 is connected to the negative pressure generating device 7 inside the housing 8 via a hose or an air passage formed inside the housing 8, and the other end extends to the connection point between the end cap 9 and the lip device 1, for transmitting negative pressure to the lip device 1. The end cap 9 and the lip device 1 are connected by a detachable method, such as plug-in, screw-in or magnetic connection, which makes it easy for users to replace the lip device 1 with different sizes or types according to different lip shapes.

[0086] The first air passage 91 can be a tubular channel formed inside the end cap 9, or a sealed channel formed by the groove 24 on the surface of the end cap 9 and the housing 8. The second air passage 12 is a gas flow channel located inside the lip device 1. One end of the second air passage 12 is connected to the cavity 11 of the lip device 1, and the other end is connected to the first air passage 91 when the lip device 1 is connected to the end cap 9. The second air passage 12 can be a fine pore formed inside the wall of the lip device 1, or a channel structure formed by the guide groove on the inner wall of the lip device 1 and the end cap 9.

[0087] In the assembled state, the end cap 9 is fixed to the mounting port 81 of the housing 8, and the lip device 1 is detachably connected to the end cap 9. At this time, the first air passage 91 inside the end cap 9 and the second air passage 12 inside the lip device 1 are interconnected, forming a complete air path from the negative pressure generating device 7 to the cavity 11 of the lip device 1. When the negative pressure generating device 7 is activated, the negative pressure it generates passes sequentially through the connecting pipe inside the housing 8, the first air passage 91 inside the end cap 9, and the second air passage 12 inside the lip device 1, and is finally transmitted to the cavity 11 inside the lip device 1. The air pressure inside the cavity 11 decreases, creating a negative pressure environment that draws lip tissue into the cavity 11 and makes it adhere to the cavity wall. Since the lip device 1 and the end cap 9 are detachably connected, users can replace different lip devices 1 according to their individual lip shape or hygiene needs, while the housing 8, the end cap 9, and the internal negative pressure generating device 7 can be reused.

[0088] Furthermore, referring to Figure 2 and Figure 5 The lip plumping device also includes a phototherapy component 10, which is installed in any one of the lip device 1, the end cap 9, and the housing 8. The lip device 1 has a light-transmitting area, which is directly opposite to the phototherapy component 10.

[0089] The phototherapy component 10 can be installed in any of the lip device 1, end cap 9, or housing 8. Specifically, the phototherapy component 10 can be an LED light-emitting module, a laser diode, a halogen lamp, or a xenon lamp. In this embodiment, the phototherapy component 10 is electrically connected to the main control board and can be controlled to turn on and off, and to adjust the light intensity and duration according to a preset program or user instructions.

[0090] The light-transmitting area is a light-transmitting part set on the lip device 1, allowing the light emitted by the phototherapy component 10 to pass through the lip device 1 and irradiate the lip tissue. The position of the light-transmitting area on the lip device 1 corresponds to the installation position of the phototherapy component 10, ensuring unobstructed light path. Specifically, the light-transmitting area can be a transparent plastic window, a fiber optic bundle, or a light-transmitting hole opened in the wall of the lip device 1. The position of the light-transmitting area usually corresponds to the area of ​​the lip requiring phototherapy, such as the lip edge area or the main lip area, to achieve precise light irradiation. The light-transmitting area can be set as a large, continuous light-transmitting area or as multiple dispersed light-transmitting points, designed to match the light emission pattern of the phototherapy component 10.

[0091] During operation, when the phototherapy component 10 is activated, the specific wavelength of light emitted penetrates the light-transmitting area and evenly illuminates the lip surface. The squeezing action of the shape memory actuator 2 forces blood to flow directionally towards the lip margin, while the phototherapy effect promotes local microcirculation, enhances cell activity, and stimulates the synthesis of collagen and elastin fibers through photobiological regulation mechanisms. The two work together to improve the fullness of blood flow immediately and promote structural improvement of lip tissue in the long term. Through the combination of the phototherapy component 10 and the light-transmitting area, this embodiment adds photobiological regulation function to the physical compression lip plumping, giving the lip plumping device both immediate plumping and long-term repair effects.

[0092] In addition, refer to Figure 5 The lip plumper also includes a protective cover 82, which detachably covers one end of the housing 8 and encloses the lip applicator 1, thereby protecting the lip applicator 1 from dust when not in use.

[0093] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A lip plumping device, characterized in that, include: The lip organ has a cavity for accommodating the lips; A shape memory actuator extends circumferentially along and is attached to the sidewall of the cavity, the shape memory actuator having a low-temperature phase and a high-temperature phase; as well as A heating component is used to heat the shape memory actuator to a phase transition temperature to trigger a phase transition; The shape memory actuator is in an expanded state during the low-temperature phase and contracts towards the center of the cavity during the high-temperature phase to compress the lip.

2. The lip plumping device according to claim 1, characterized in that, The shape memory actuator has a lip-shaped sheet structure that adapts to the contour of the lip, and the beginning and end are not closed to form a first slit, so as to allow the shape memory actuator to stretch and deform circumferentially during the phase transition.

3. The lip plumping device according to claim 2, characterized in that, The heating component is a flexible electric heating sheet that fits into the shape memory actuator. The flexible electric heating sheet is not closed at both ends and has a second slit. The two ends of the flexible electric heating sheet at the second slit are connected by an elastic element to allow the flexible electric heating sheet to deform synchronously with the circumferential expansion and contraction of the shape memory actuator.

4. The lip plumping device according to claim 2, characterized in that, The lip plumping device also includes a flexible buffer layer, which is disposed on the cavity wall of the cavity. The shape memory actuator is disposed on the inner side of the flexible buffer layer. The side of the shape memory actuator opposite to the flexible buffer layer is recessed to form a groove, and the heating component is embedded in the groove.

5. The lip plumping device according to claim 1, characterized in that, The shape memory actuator is provided with a mounting hole, and a first magnet is embedded in the mounting hole; The lip device is provided with a second magnet, which magnetically attracts the first magnet to allow the shape memory actuator to be detachably connected to the inner wall of the cavity of the lip device. The inner wall of the cavity is also provided with exposed electrode contacts. When the shape memory actuator is magnetically connected to the inner wall of the cavity, the electrode contacts are electrically connected to the heating component.

6. The lip plumping device according to claim 1, characterized in that, The cavity has an open end and an end wall opposite to the open end; The shape memory actuator is disposed adjacent to the open end, and there is a gap between the shape memory actuator and the end wall to accommodate the lip.

7. The lip plumping device according to claim 6, characterized in that, The shape memory actuator takes the shape of a trumpet or U-shape that gradually expands from the open end to the end wall during the high-temperature phase, so that blood from the lips converges towards the lip margin.

8. The lip plumping device according to any one of claims 1 to 7, characterized in that, It also includes a negative pressure generating device, which is connected to the cavity and is used to create a negative pressure in the cavity to draw the lips into the cavity.

9. The lip plumping device according to claim 8, characterized in that, The lip plumping device also includes: The housing has an installation port, and the negative pressure generating device is located inside the housing; An end cap is provided at the mounting port, and the lip device is detachably installed on the end cap. The end cap is provided with a first air passage, and the lip device is provided with a second air passage communicating with the cavity. The first air passage connects the negative pressure generating device and the second air passage.

10. The lip plumping device according to claim 9, characterized in that, The lip plumping device also includes a phototherapy component, which is installed in any one of the lip applicator, the end cap, and the housing. The lip applicator has a light-transmitting area, which is directly opposite the phototherapy component.

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