Drawstring with indentations

Abstract

The present application provides a lifting thread with indentation, comprising: a thread body, the thread body having a surface; a plurality of barb structures, the plurality of barb structures being provided on the surface of the thread body, and each of the barb structures comprising a barb and a groove, the barb being provided with at least one flat portion, the barb extending towards a first direction, and the groove being provided adjacent to one side of the barb; and a plurality of reinforcing structures, the plurality of reinforcing structures being provided on the surface of the thread body, and each of the reinforcing structures comprising at least one reinforcing barb, the reinforcing barb extending towards a second direction. The plurality of reinforcing structures enhance the structural stability, so that the thread body is more stable when subjected to external tension or stress, is less likely to break, and increases the fixing force on the skin tissue, further improving the stability and durability of the lifting effect.

Description

Technical Field

[0001] This invention relates to a lifting thread, and more particularly to a lifting thread with indentations. Background Technology

[0002] Lifting lines are a modern cosmetic medical technique commonly used in facial anti-aging treatments. It's a non-surgical facial lifting method typically used to improve facial sagging and drooping, achieving lifting, firming, and shaping effects. Lifting threads are specially formulated absorbable medical threads, usually made from biocompatible materials such as polydioxanone (PDO). After insertion into the skin, the threads are gradually absorbed by the body. During absorption, they stimulate collagen production in the skin tissue, thus helping to improve skin elasticity and firmness.

[0003] For example, a suture for plastic surgery, as described in Taiwan Patent No. TWM580945, includes a suture body and multiple sharp protrusions (i.e., barbs). The surface of the suture body is cut in the same or opposite directions within a spiral angle using a double-blade cutting method, so that multiple grooves are formed on the surface of the suture body. After each groove is cut, a corresponding sharp protrusion is formed to hold the skin.

[0004] The aforementioned case No. TWM580945 uses a cutting method to form barbs. Generally, the barb thickness is 0.23mm, the barb width is 0.48mm, and the distance between the barbs and adjacent barbs is 1mm.

[0005] Another method available on the market is to form barbs by embossing. The barb thickness is 0.27mm, the barb width is 0.24mm, and the distance between adjacent barbs is 3.8mm.

[0006] The barbs affect the following aspects: 1. Lifting effect: The more barbs, the stronger the grip, providing a more effective lifting effect. This is especially important for areas with noticeable skin laxity (such as nasolabial folds and double chins). 2. Fixation stability: Barbs better fix the skin, preventing thread slippage or displacement, helping to maintain facial contour stability, especially in the months following treatment. 3. Stimulation of collagen production: The barbs create micro-trauma to the skin during insertion, helping to stimulate collagen production, thus achieving a long-term tightening effect.

[0007] In thread lifting treatments, the thickness and width of the barbs significantly impact treatment effectiveness, comfort, durability, and post-operative recovery. Barb thickness refers to the height or depth of the barb itself, i.e., how high the protruding part of the barb is on the surface. The thickness of the barb directly affects its gripping force on the skin and skin tissue, thus influencing the lifting effect and the skin's grasping power. Thicker barbs provide stronger gripping power, therefore showing more significant effects on areas with severe skin laxity (such as double chin, cheekbones, and facial contours). Thicker barbs can grip the skin deeply, achieving a stronger lifting effect and improving facial contours. Thicker barbs provide stronger support, allowing the thread to be fixed more stably, and the lifting effect typically lasts longer. Barb width refers to the length of the base portion of the barb, i.e., the width of each barb. The width of the barb affects the contact area between the barb and the skin, thus affecting the lifting effect and the skin's grasping power. Wider barbs have a larger contact area with the skin, able to distribute more of the skin's weight. Wider barbs are suitable for patients with severe skin laxity, effectively supporting a larger treatment area. Wider barbs provide more stable skin fixation, preventing thread slippage during treatment and maintaining results for a longer period. Barb density refers to the distribution density of barbs on the thread, i.e., the number or spacing of barbs. Barb density directly affects treatment effectiveness, the degree of collagen stimulation, and post-operative recovery. Higher barb density means more barb structures on the thread, providing stronger grip, especially suitable for patients with significant skin laxity. High-density barbs can significantly lift facial contours after treatment, particularly in areas such as nasolabial folds, double chin, and cheekbones, achieving a more noticeable lifting effect in a shorter time.

[0008] Please refer to Table 1, which shows the barcodes for known techniques.

[0009] Table 1:

[0010]

[0011] In conventional technology, the thickness of the barb is (The barb thickness is 0.23mm in the cutting method and 0.27mm in the embossing method), the barb width is... (The barb thickness is 0.48mm in the cutting method and 0.24mm in the embossing method), the spacing between adjacent barbs is... (In the cutting method, the spacing between adjacent barbs is 1mm; in the embossing method, the spacing between adjacent barbs is 3.8mm). Thus, forming barbs by cutting results in a thread tensile strength of 63 Newtons (N) and a thread pull-out value of 3.7 Newtons (N); forming barbs by embossing results in a thread tensile strength of 35 Newtons (N) and a thread pull-out value of 3.8 Newtons (N). A higher tensile strength value indicates a greater tensile force that the thread can withstand, meaning the maximum force that allows the thread to maintain its integrity without breaking under continuous stretching. A higher pull-out value indicates a greater tensile strength that the thread can withstand, resulting in a stronger lifting effect and helping to combat skin sagging caused by gravity and aging. In conventional techniques, due to the smaller thickness and width of the barbs, and the larger spacing between adjacent barbs (lower barb density), the thread pull-out value is limited.

[0012] Therefore, how to eliminate the above-mentioned deficiencies is the technical difficulty that the inventors in this case want to solve. Summary of the Invention

[0013] In view of the conventional design, the object of the present invention is to solve and improve upon the problems and deficiencies of the conventional design by providing a lifting thread with indentation.

[0014] To achieve the objectives of this invention, the present invention provides an indented lifting thread, comprising: a thread having a surface; a plurality of barb structures disposed on the surface of the thread, each barb structure including a barb and a groove, the barb having at least a planar portion, the barb extending in a first direction, and the groove being disposed adjacent to one side of the barb; and a plurality of reinforcing structures disposed on the surface of the thread, each reinforcing structure including at least a reinforcing barb extending in a second direction.

[0015] The first direction and the second direction are different.

[0016] The reinforcing barb has at least one flat portion.

[0017] The reinforcing barb has at least one spike.

[0018] Each of the reinforcing structures further includes a reinforcing groove, which is located adjacent to one side of the reinforcing barb.

[0019] The barbs of the plurality of barbed structures are arranged on the line in a manner with equal or unequal spacing.

[0020] The plurality of grooves are arranged on the line body in a manner with equal or unequal spacing.

[0021] The groove can be a planar groove or a circular arc groove.

[0022] The plurality of barb structures and the plurality of reinforcing structures are formed by cutting and embossing, and the barb thickness is 0.35mm, the barb width is 0.54mm, and the spacing between adjacent barbs is [missing information].

[0023] The multiple reinforcing structures enhance structural stability, making the thread more stable and less prone to breakage when subjected to external tension or stress. They also increase the fixation force on the skin tissue, further improving the stability and durability of the lifting effect. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the lifting thread with indentation according to the present invention.

[0025] Figure 2 This is a schematic diagram of the reinforcing barb with spikes in this invention.

[0026] Figure 3 This is a schematic diagram showing that a plurality of reinforcing barbs are provided between the barbs and adjacent barbs in this invention.

[0027] Figure 4 This is a schematic diagram showing that the reinforcing groove is located adjacent to one side of the reinforcing barb in this invention.

[0028] Figure 5 This is a schematic diagram showing that the reinforcing structure in this invention has spikes and reinforcing grooves.

[0029] Figure 6 This is a schematic diagram of the groove being a circular arc groove in this invention.

[0030] Explanation of reference numerals in the attached drawings: 1-line; 11-surface; 2-barb structure; 21-barb; 211-flat part; 22-groove; 3-reinforcing structure; 31-reinforcing barb; 311-flat part; 312-spiky part; 32-reinforcing groove; Y-first direction; X-second direction. Detailed Implementation

[0031] To facilitate a clear and concise understanding of the other features, advantages, and effects of this invention, the invention will now be described in detail below with reference to the accompanying drawings:

[0032] Please see Figure 1 As shown, the present invention provides a lifting thread with indentation, comprising:

[0033] The suture 1 has a surface 11. The suture 1 can be classified as absorbable or non-absorbable according to its material. Absorbable materials include plain catgut, chromic gut, polyglycolic acid (Dexon), polyglycolic acid (Vicryl), polycaprolactone (PCL), polypropylene carbonate (PPC), polytrimethylene carbonate, polydioxanone (PDO), polyglycolic acid (PGA), polyglycolic acid copolymer (PLGA), lactide (LA), or polydioxanone (PDS). Non-absorbable materials include silk, cotton, nylon, polyester, polyethylene, polypropylene, polytetrafluoroethylene, stainless steel, or polybutylene. The surface 11 can be coated with materials that promote skin repair, such as collagen.

[0034] A plurality of barb structures 2 are disposed on the surface 11 of the thread body 1, and each barb structure 2 includes a barb 21 and a groove 22. The barb 21 has at least one flat portion 211 and extends in a first direction Y, and the groove 22 is disposed adjacent to one side of the barb 21. The plurality of barb structures 2 refer to protrusions on the surface 11 of the thread body 1, which can form a firm grip under the skin, grasp the skin tissue, and provide stronger support and lifting effect. The barb 21 can be used to hook the skin tissue, and the groove 22 can increase the surface area of ​​the thread body 1. The groove 22 has sufficient width and depth to hold the skin tissue and increase stability. The barbs 21 of the plurality of barb structures 2 can be arranged on the thread body 1 in an equal or unequal spacing manner. The plurality of grooves 22 can also be arranged on the thread body 1 in an equal or unequal spacing manner.

[0035] A plurality of reinforcing structures 3 are disposed on the surface 11 of the thread body 1, and each reinforcing structure 3 includes at least one reinforcing barb 31 extending in a second direction X. The plurality of reinforcing structures 3 refers to a special design to enhance the structural stability of the thread body 1, thereby improving the stability and durability of the lifting effect. The first direction Y and the second direction X may be different.

[0036] Figure 1In this case, the reinforcing structure 3 is used to create a bidirectional barbed thread. The bidirectional barbs refer to the barbs 21 and reinforcing barbs 31 on the thread 1 being distributed in two directions (i.e., the first direction Y and the second direction X). The advantages are as follows: The barbs 21 and reinforcing barbs 31, distributed in two directions, allow the thread 1 to fix the connective tissue within the skin in two different directions after implantation, thus providing stronger traction and gripping force. This is particularly suitable for areas requiring large-scale lifting (such as facial contours, chin, cheeks, etc.). Furthermore, the barbs 21 and reinforcing barbs 31 function in different directions, resulting in a more comprehensive and stable skin lifting effect. Because the pulling force comes from two different directions, the skin lifting effect is more even, preventing overstretching or unnatural appearance in any area, thus achieving a more balanced and natural aesthetic effect. In addition, the barb 21 and the reinforcing barb 31 can provide bidirectional traction, enhance the micro-invasive stimulation of the skin, and continuously stimulate the skin's self-repair mechanism, thereby achieving a stronger lifting effect and enhancing collagen production.

[0037] Please see Figure 2 As shown, the reinforcing barb 31 has at least one spike 312. Thus, the spikes 312 of the plurality of reinforcing structures 3 are distributed along the surface 11 of the thread 1, forming a serrated structure. When the lifting thread is implanted into the skin, the spikes 312 of the reinforcing barb 31 act like hooks, firmly gripping the connective tissue inside the skin, thereby achieving an effective lifting and support effect. Its advantages are as follows: 1. Enhanced gripping force: The serrated structure strengthens the contact between the thread 1 and the skin, preventing the thread 1 from slipping or shifting, making the lifting effect more stable. 2. Immediate lifting effect: The gripping action of the spikes 312 provides an immediate lifting effect after implantation, and continues to improve skin condition with the proliferation of collagen.

[0038] Please see Figure 2 and Figure 3 As shown, the number of reinforcing barbs 31 can vary depending on the requirements. Figure 2 In this design, a reinforcing barb 31 is provided between the barb 21 and the adjacent barb 21, which is suitable for people with sensitive skin tissue, avoiding the discomfort or allergic reactions that may be caused by excessive sharp points 312; Figure 3 In this design, a plurality of reinforcing barbs 31 are provided between the barb 21 and the adjacent barb 21, which can be used for people with less sensitive skin tissue. The more barbs 312 further increase the gripping force or improve the immediate effect.

[0039] Please see Figure 1 and Figure 4As shown, compared to Figure 1 ,exist Figure 4 Each of the reinforcing structures 3 shown in the diagram also includes a reinforcing groove 32, which is disposed adjacent to one side of the reinforcing barb 31. The reinforcing groove 32 also has sufficient width and depth to hold the skin tissue, further increasing stability. The reinforcing barbs 31 of the plurality of reinforcing structures 3 can be arranged on the thread body 1 in an equally or unequally spaced manner. The plurality of reinforcing grooves 32 can also be arranged on the thread body 1 in an equally or unequally spaced manner.

[0040] The plurality of barbed structures 2 and the plurality of reinforcing structures 3 can be formed by cutting and embossing. Cutting refers to removing or cutting off a portion of the material on the thread 1 using a tool (such as a knife or laser). Embossing refers to creating protrusions or indentations on the surface of the material on the thread 1 by applying pressure. For example, in Figure 1 In this case, the barb 21 of each barb structure 2 is formed by cutting, and the flat part 211 and the groove 22 of the barb 21 are formed by embossing. However, this is not a limitation. It is also possible that a part of the barb 21 itself is formed by cutting, and another part of itself is formed by embossing.

[0041] The plurality of barb structures 2 and the plurality of reinforcing structures 3 can be formed simultaneously by cutting and embossing. The barb thickness is 0.35mm, the barb width is 0.54mm, and the spacing between adjacent barbs is... This will cause the tension of the thread to be [value missing]. Newton (N), the draw weight of the wire. Newton (N).

[0042] Please refer to Table 2, which shows the barb in this case.

[0043] Table 2:

[0044]

[0045] Please see Figure 2 and Figure 5 As shown, compared to Figure 2 ,exist Figure 5 In addition to having at least one spike 312, each of the reinforcing structures 3 shown in the figure also includes a reinforcing groove 32. In this way, the spike 312 of the reinforcing barb 31 will firmly grasp the connective tissue inside the skin like a hook, thereby achieving an effective lifting and support effect. Furthermore, the reinforcing groove 32 has sufficient width and depth to hold the skin tissue, further increasing stability.

[0046] Please see Figure 1 and Figure 6 As shown, compared to Figure 1 The groove 22 shown in the figure can be a planar groove. Figure 6 The groove 22 shown in the figure can be a circular arc groove.

[0047] Compared with existing prior art, the present invention has the following advantages:

[0048] 1. By providing a plurality of reinforcing structures 3 on the surface 11 of the thread body 1, and each reinforcing structure 3 including at least a reinforcing barb 31, the structural stability of the thread body 1 is enhanced, thereby improving the stability and durability of the lifting effect.

[0049] Second, the lifting thread is formed by the plurality of reinforcing structures 3, with the barbs 21 and the reinforcing barbs 31 distributed in two directions, so that after the thread 1 is implanted into the skin, it can fix the connective tissue inside the skin in two different directions, thereby providing stronger traction and gripping force.

[0050] Third, the number of reinforcing barbs 31 can vary depending on the needs. Multiple reinforcing barbs 31 are provided between each barb 21 and the adjacent barb 21, which can be used for people with less sensitive skin tissue. The more spikes 312 further increase the gripping force or improve the immediate effect.

[0051] Fourth, the reinforcing barb 31 may be provided with at least one spike 312 (or a flat portion 311), and the spike 312 of the reinforcing barb 31 will firmly grasp the connective tissue inside the skin like a hook.

[0052] 5. The reinforcing structure 3 also includes a reinforcing groove 32, which is disposed adjacent to one side of the reinforcing barb 31. The reinforcing groove 32 also has sufficient width and depth to hold the skin tissue, further increasing stability.

[0053] VI. The plurality of barb structures 2 and the plurality of reinforcing structures 3 can be formed simultaneously by cutting and stamping. The barb thickness is 0.35mm, the barb width is 0.54mm, and the spacing between adjacent barbs is... This will cause the tension of the thread to be [value missing]. Newton (N), the draw weight of the wire. Newton (N). Compared to conventional techniques, the wire pull-out value can achieve an improvement of up to nearly 60%, that is, (6 Newtons - 3.8 Newtons) / 3.8 Newtons approximately 57%; (6 Newtons - 3.7 Newtons) / 3.7 Newtons approximately 62%.

[0054] The multiple reinforcing structures 3 enhance structural stability, making the thread 1 more stable and less prone to breakage when subjected to external tension or stress, and increasing the fixation force on the skin tissue, thereby further improving the stability and durability of the lifting effect.

[0055] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Therefore, any equivalent modifications, combinations, substitutions, or modifications made without departing from the spirit and scope of the present invention should be covered within the scope of the patent application of the present invention.

Claims

1. A lifting thread with indentation, characterized in that, Include: A linear body having a surface; A plurality of barb structures are disposed on the surface of the line body, and each barb structure includes a barb and a groove. The barb has at least one flat portion, extends in a first direction, and the groove is disposed adjacent to one side of the barb; and A plurality of reinforcing structures are disposed on the surface of the line body, and each reinforcing structure includes at least one reinforcing barb extending in a second direction.

2. The lifting thread with indentation as described in claim 1, characterized in that: The first direction and the second direction are not the same.

3. The lifting thread with indentation as described in claim 1, characterized in that: The reinforcing barb has at least one flat surface.

4. The lifting thread with indentation as described in claim 1, characterized in that: The reinforcing barb has at least one spike.

5. The lifting thread with indentation as described in claim 1, characterized in that: Each of the reinforcing structures also includes a reinforcing groove, which is located adjacent to one side of the reinforcing barb.

6. The lifting thread with indentation as described in claim 1, characterized in that: The barbs of the plurality of barbed structures are arranged on the line in a manner with equal or unequal spacing.

7. The lifting thread with indentation as described in claim 1, characterized in that: The plurality of grooves are arranged on the line body in a manner with equal or unequal spacing.

8. The lifting thread with indentation as described in claim 1, characterized in that: The groove can be a flat groove or a circular arc groove.

9. The lifting thread with indentation as described in claim 1, characterized in that: The plurality of barb structures and the plurality of reinforcing structures are formed by cutting and embossing, and the barb thickness is 0.35mm, the barb width is 0.54mm, and the spacing between adjacent barbs is [missing information].

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