A focused ultrasound skin tightening method based on vector fixed-point pulling

Abstract

The application discloses a focused ultrasound skin tightening method based on vector fixed-point lifting, and comprises the following steps: providing a focused ultrasound treatment device; determining at least one anchor area needing mechanical support and at least one traction area needing traction in a target skin area; controlling the focused ultrasound treatment device to emit a plurality of focused ultrasound waves in the anchor area at a first preset interval to form a dense cross energy line distribution and construct a mesh anchor structure; and controlling the focused ultrasound treatment device to emit a plurality of focused ultrasound waves in the traction area at a second preset interval greater than the first preset interval to form a sparse cross energy line distribution and construct a traction network connected with the mesh anchor structure. The application breaks the limitation of traditional uniform distribution by creating a dense wiring area and a sparse wiring area. The dense area serves as a stable anchor point, and the sparse area serves as a traction belt to guide the tissue to move towards the anchor point.

Description

Technical Field

[0001] This invention relates to the field of ultrasound technology, specifically to a focused ultrasound skin tightening method based on vector-based point lifting. Background Technology

[0002] Focused ultrasound (FUS) technology, as a non-invasive energy therapy, has been widely used in the field of medical aesthetics. Its technical principle lies in precisely focusing ultrasound energy onto target tissues at a specific depth under the skin (such as the dermis and superficial fascia). Through the thermal effect, it causes immediate contraction of collagen fibers and stimulates a long-term process of collagen regeneration and remodeling, thereby achieving a tissue tightening and lifting effect.

[0003] However, conventional focused ultrasound (FUS) techniques in the current field suffer from significant technical bottlenecks. The mainstream approach involves parallel, uniformly distributed energy delivery within the target area. While this homogenized energy delivery strategy induces overall thermal stimulation and widespread tightening of the treatment area, its single mode of action makes precise mechanical control difficult. Specifically, this technique cannot construct differentiated mechanical support structures within the tissue and lacks an "anchor point" design similar to those in engineering, resulting in dispersed lifting forces and reduced efficiency in counteracting tissue relaxation and the effects of gravity. Therefore, there is an urgent need in the field for a novel technique that can optimize the distribution of ultrasound energy to achieve more precise and efficient mechanical effects. Summary of the Invention

[0004] This invention provides a focused ultrasound skin tightening method based on vector-based point lifting, comprising the following steps: Provide a focused ultrasound therapy device; Identify at least one anchoring area in the target skin region that requires enhanced mechanical support and at least one traction area that needs to be tractioned; The focused ultrasound therapy device is controlled to emit multiple focused ultrasound waves at a first preset interval within the anchoring area, forming a densely intersecting energy line distribution, thereby constructing a mesh-like anchoring structure in the subcutaneous tissue layer; The focused ultrasound therapy device is controlled to emit multiple focused ultrasound waves within the traction area at a second preset interval greater than the first preset interval, forming a sparsely intersecting energy line distribution, thereby constructing a traction network connected to the mesh anchoring structure; Specifically, the stress concentration effect of the mesh anchoring structure, combined with the tissue traction effect of the traction network, generates an anchoring traction biomechanical model to achieve tightening and lifting of the target skin.

[0005] In one possible implementation, the energy line distributions of the dense and sparse intersections together form an intersection wiring pattern, wherein the intersection angle between the energy lines is 70° to 110°, preferably 90°.

[0006] In one possible implementation, the first preset spacing is 1 mm to 3 mm, and the second preset spacing is 5 mm to 10 mm.

[0007] In one possible implementation, the distribution of the anchoring region and the traction region is determined based on the evaluation results of the morphological characteristics of the target skin region.

[0008] In one possible implementation, the anchoring area is defined as the primary stress point against tissue relaxation, and the traction area is defined as the region surrounding the primary stress point and pointing in the direction of natural skin relaxation.

[0009] In one possible implementation, the assessment of the morphological features of the target skin region includes: acquiring image data of the target region through an image acquisition device, and identifying mechanical weak points based on the image data; and planning and setting the anchoring region at the mechanical weak points.

[0010] Compared with the prior art, the beneficial effects of the present invention are: By creating "dense wiring zones" and "sparse wiring zones," the limitations of traditional uniform wiring are broken. The dense zone forms a high-intensity mesh-like thermal coagulation zone through high-frequency intersecting energy lines, serving as a stable "anchor point"; the sparse zone acts as a "traction belt," guiding tissue to move directionally towards the anchor point. It can simulate the vector lifting path in surgery, precisely correcting relaxation in different directions, and significantly improving mechanical efficiency. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the process of the focused ultrasound skin tightening method based on vector-point lifting according to the present invention. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0013] It should be noted that the serial numbers assigned to the components in the embodiments of the present invention, such as "first" and "second", are only used to distinguish the described objects and have no sequential or technical meaning.

[0014] This invention provides a focused ultrasound skin tightening method based on vector-based point lifting, comprising the following steps: S1. A focused ultrasound therapy device is provided; this device typically includes a main unit, a control unit, a treatment handpiece, and a transducer. The transducer emits focused ultrasound waves at a specific frequency (e.g., 4-10MHz), precisely focusing the ultrasound energy at a specific depth under the skin (e.g., 1.5-4.5mm into the dermis or superficial fascia). The control unit is used to set and adjust treatment parameters, such as energy density, pulse frequency, and depth of action.

[0015] S2. Identify at least one anchoring area requiring mechanical support and at least one traction area within the target skin region. Anchoring areas are typically selected at mechanical support points on the face or body, such as the prominent zygomatic arch, the attachment point of the mandibular ligament, or other areas with relatively stable deep structures, or areas with the most severe skin sagging requiring strong lifting. Traction areas are areas with high tissue laxity surrounding these anchoring points, directed towards the anchoring points to gather the loose tissue towards them. The determination method can be automated by using image analysis technology to quantitatively assess skin laxity and contour lines.

[0016] S3. Control the focused ultrasound therapy device to emit multiple focused ultrasound waves at a first preset interval within the anchoring area, forming a densely intersecting energy line distribution, thereby constructing a mesh-like anchoring structure in the subcutaneous tissue layer. In this step, the first preset interval (e.g., 1-3 mm) is small, allowing multiple ultrasound energy lines to intersect at a high density within the anchoring area (e.g., at an angle of 70-110 degrees, preferably 90 degrees orthogonally). This densely intersecting layout allows the thermal coagulation points (or thermal coagulation lines) generated by the ultrasound waves to connect with each other in three-dimensional space, forming a continuous, high-strength mesh-like thermal coagulation zone. During tissue healing, this structure induces a large amount of new collagen proliferation and cross-linking, ultimately forming a strong fibrous mesh scaffold under the skin, acting as a mechanical anchor similar to an "internal anchor," providing a stable point of force for subsequent traction.

[0017] S4. The focused ultrasound therapy device is controlled to emit multiple focused ultrasound waves within the traction area at a second preset spacing greater than the first preset spacing, forming a sparsely intersecting energy line distribution, thereby constructing a traction network connected to the mesh anchoring structure. Within the traction area, energy lines are laid out with a larger second preset spacing (e.g., 5-10 mm). These sparse energy lines also intersect, but their main function is not to form a dense network, but rather to act as "traction bands." One end connects to the dense anchoring area, and the other end extends to the loose tissue to be tractioned. Due to the larger spacing between the lines, the overall thermal damage to the tissue is smaller, and the amount of new collagen is moderate, mainly playing a role in guiding and vectorizing tissue contraction.

[0018] In this process, the stress concentration effect of the mesh anchoring structure, combined with the tissue traction effect of the traction network, creates an anchoring-traction biomechanical model to achieve skin tightening and lifting. During the tissue repair process after treatment, the dense mesh structure formed in the anchoring area has high mechanical strength, becoming a "stress concentration zone." Meanwhile, the sparse energy lines in the traction area undergo collagen contraction upon heating. This contractile force, along the direction of the energy lines, "vectorically pulls" the surrounding loose tissue towards the firm anchoring area. This mechanical model, progressing from "points" (traditional uniform application) to "surfaces" (anchoring areas) and then to "lines" (traction lines), simulates the biological principles of suspension lifting in surgery, achieving a more biomechanically sound, efficient, and lasting skin tightening effect.

[0019] When determining the distribution of the anchoring and traction regions, it can be based on the evaluation results of the morphological characteristics of the target skin area. Image data of the target area is acquired using an image acquisition device, and mechanically weak points are identified based on the image data. The anchoring regions are then planned and set at these mechanically weak points. The anchoring regions are identified as the main stress points to counteract tissue relaxation, and the traction regions are identified as the areas surrounding the main stress points and pointing in the direction of natural skin relaxation.

[0020] When designing the anchoring and traction zones, (1) visual observation and palpation are used to determine the skin's laxity and wrinkle depth; (2) a professional skin analyzer is used to quantify and analyze the skin's elasticity and firmness; and (3) contour data is obtained through 3D facial scanning to identify sunken and sagging areas. Based on these assessment results, the layout of the anchoring and traction zones can be designed in a personalized manner, such as setting anchoring zones at the end of the nasolabial folds and in areas where the jawline is blurred, thereby achieving precise and customized treatment.

[0021] Image acquisition devices can be visible light cameras, 3D scanners, or ultrasound imaging equipment. Image processing algorithms (such as edge detection and texture analysis) can identify "mechanical weak points" such as contour changes caused by relaxation and areas of dense wrinkles. By automatically or assistedly planning the anchoring zone at these weak points, intelligent and precise treatment is achieved, making the technical solution independent of the operator's personal experience and improving the repeatability and standardization of the method.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method of focused ultrasound skin tightening based on vectoral fixed-point pulling, characterized in that, include: Provide a focused ultrasound therapy device; Identify at least one anchoring area in the target skin region that requires enhanced mechanical support and at least one traction area that needs to be tractioned; The focused ultrasound therapy device is controlled to emit multiple focused ultrasound waves at a first preset interval within the anchoring area, forming a densely intersecting energy line distribution, thereby constructing a mesh-like anchoring structure in the subcutaneous tissue layer; The focused ultrasound therapy device is controlled to emit multiple focused ultrasound waves within the traction area at a second preset interval greater than the first preset interval, forming a sparsely intersecting energy line distribution, thereby constructing a traction network connected to the mesh anchoring structure; Specifically, the stress concentration effect of the mesh anchoring structure, combined with the tissue traction effect of the traction network, generates an anchoring traction biomechanical model to achieve tightening and lifting of the target skin.

2. The focused ultrasound skin tightening method based on vector-point lifting according to claim 1, characterized in that, The dense and sparse energy line distributions together form a cross wiring pattern, wherein the cross angle between the energy lines is 70° to 110°.

3. The focused ultrasound skin tightening method based on vector-point lifting according to claim 1, characterized in that, The first preset spacing is 1 mm to 3 mm, and the second preset spacing is 5 mm to 10 mm.

4. The focused ultrasound skin tightening method based on vector-point lifting according to claim 1, characterized in that, The distribution of the anchoring and traction regions is determined based on the evaluation results of the morphological characteristics of the target skin region.

5. The focused ultrasound skin tightening method based on vector-point lifting according to claim 1, characterized in that, The anchoring area is defined as the primary stress point against tissue relaxation, and the traction area is defined as the region surrounding the primary stress point and pointing in the direction of natural skin relaxation.

6. The focused ultrasound skin tightening method based on vector-point lifting according to claim 4, characterized in that, The evaluation of the morphological features of the target skin region includes: acquiring image data of the target region through an image acquisition device, and identifying mechanical weak points based on the image data; and planning and setting the anchoring region at the mechanical weak points.

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