Pulling wire with irregular cross section

Abstract

A lifting thread with an irregular cross-section includes: a thread body with an irregular cross-section; a plurality of barbs disposed on the thread body, each barb having at least one flat surface; and a plurality of grooves disposed adjacent to one side of each barb. The irregular cross-section of the thread body increases the contact area, allowing for a more even distribution of friction, thereby reducing localized frictional pressure and improving durability. Simultaneously, the irregular structure increases the contact area with skin tissue, enhancing friction, reducing slippage of the lifting thread within the skin, and contributing to improved stability during tightening or stretching, making it less prone to loosening. This design also enhances suture stability, ensuring a tighter suture and effectively preventing uneven sutures or excessively large gaps.

Description

Technical Field

[0001] This invention relates to a lifting cable, and more particularly to a lifting cable with an irregular cross-section. Prior 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 the skin tissue to produce collagen, thus helping to improve skin elasticity and firmness.

[0003] For example, a "suture for plastic surgery" in Republic of China Patent No. M580945 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 by a double-blade cutting method, so that multiple grooves are formed on the surface of the suture body. After each groove is cut, a sharp protrusion is formed to hold the skin.

[0004] However, referring to Figures 1 and 2 of document M580945, the suture in that case is cut on the surface of the suture body using a double-blade cutting method. The suture body has multiple grooves and multiple sharp protrusions. Because the groove length is relatively short and it is inclined, the grooves do not have enough space to hold the human tissue, so it can only rely on the sharp protrusions to hold the human tissue. However, the sharp protrusions can easily puncture the human tissue, increasing pain. Moreover, as can be seen from Figures 1 and 2 of document M580945, in order to make the sharp protrusions protrude from the surface of the suture body and bend up, the cutting depth is almost half the diameter of the suture body. The structure of the suture body is more damaged, the structural strength is relatively weak, and it is easy to break. Since the suture only relies on the grooves and multiple sharp protrusions to hold the skin tissue, the pull value is relatively poor. If the structure can be improved to increase the pull value and make the lifting effect stronger, it will help to counteract the skin's gravity and aging-induced sagging.

[0005] Therefore, how to eliminate the above-mentioned deficiencies is the technical difficulty that the inventors of this case want to solve. Summary of the Invention

[0006] In view of the conventional application, the present invention aims to solve and improve the problems and deficiencies existing in the conventional application.

[0007] To achieve the purpose of this invention, the present invention provides a lifting cable with an irregular cross-section, comprising: a cable body having an irregular cross-section; a plurality of barbs disposed on the cable body, and each barb having at least one plane; and a plurality of grooves disposed adjacent to one side of each barb.

[0008] The irregular structure can be multi-lobed, trilobed, or triangular.

[0009] The plurality of barbs are arranged on the line in a straight line or spiral pattern.

[0010] The plurality of grooves are arranged on the line in a straight line or spiral pattern.

[0011] The plurality of barbs are arranged on the line at equal or unequal intervals.

[0012] The plurality of grooves are arranged on the line body in a manner with equal or unequal spacing.

[0013] The distance between the barb and the adjacent barb is 0.5mm to 1.5mm.

[0014] The irregularly shaped cross-section of the thread increases its contact area, allowing for a more even distribution of friction, thus reducing localized frictional pressure and improving durability. Simultaneously, the irregular shape increases the contact area with skin tissue, enhancing friction, reducing thread slippage within the skin, and contributing to improved stability during tightening or stretching, making it less prone to loosening. This design also enhances suture stability, ensuring a tighter suture and effectively preventing uneven sutures or excessively large gaps. Simple Explanation of the Diagram

[0015]

[0016] [Figure 1] is a schematic diagram of the cross-section of the linear body in this invention being multi-leaf shaped.

[0017] [Figure 2] is a schematic diagram of the cross-section of the line body in this invention being multi-leaf shaped and the barbs being arranged in a spiral pattern on the line body.

[0018] [Figure 3] is a schematic diagram of the cross-section of the line body in this invention being multi-leaf shaped and the barbs being arranged at unequal intervals on the line body.

[0019] [Figure 4] is a schematic diagram of the trilobal cross-section of the linear body in this invention.

[0020] [Figure 5] is a schematic diagram of the cross-section of the line body in this invention being trilobal and the barbs being arranged in a spiral pattern on the line body.

[0021] [Figure 6] is a schematic diagram of the cross-section of the line body in this invention being trilobal and the barbs being arranged at unequal intervals on the line body.

[0022] [Figure 7] is a schematic diagram of the cross-section of the linear body in this invention being triangular.

[0023] [Figure 8] is a schematic diagram of the cross-section of the line body in this invention being trilobal and the barbs being arranged in a spiral pattern on the line body.

[0024] [Figure 9] is a schematic diagram of the cross-section of the line body in this invention being trilobal and the barbs being arranged at unequal intervals on the line body.

[0025] [Figure 10] is a top enlarged view of the cross-section of the linear body in this invention, which is multi-leaf shaped.

[0026] [Figure 11] is a top enlarged view of the trilobal cross-section of the linear body in this invention.

[0027] [Figure 12] is a top enlarged view of the cross-section of the linear body in this invention being a triangle. Implementation

[0028] To facilitate a concise understanding for your examiner of the other features, advantages, and effects of this invention, the invention is described in detail below with reference to the accompanying drawings:

[0029] Please refer to Figures 1, 2, and 3. This invention provides a lifting wire with an irregular cross-section, comprising:

[0030] A single thread 1 has an irregularly shaped cross-section. This thread 1 can be classified as absorbable or non-absorbable based on 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, etc. The surface of the thread 1 can be coated with materials that promote skin repair, such as collagen. This irregular structure can be multi-leaf 11. Multi-leaf 11 refers to a structure in which multiple leaves extend outward from the center. Depending on the number of leaves, multi-leaf 11 can be four-leaf (cross-shaped), five-leaf, six-leaf, etc., appearing as a combination of multiple leaves forming a structure. The specific number of leaves can be determined according to actual needs.

[0031] A plurality of barbs 2 are disposed on the thread body 1, and each barb 2 has at least one flat surface 21. The barbs 2 are used to fix skin tissue and prevent loosening due to excessive tension. The barbs 2 can be manufactured using common commercial processes, such as cutting, molding, or injection molding. The plurality of barbs 2 can be arranged in a straight line or spiral pattern on the thread body 1. The plurality of barbs 2 can be arranged at equal or unequal intervals on the thread body 1. The distance between adjacent barbs 2 is 0.5mm to 1.5mm. The distance between adjacent barbs 2 can be the distance between the centers of two barbs 2.

[0032] A plurality of grooves 3 are respectively provided adjacent to one side of the barb 2. The plurality of grooves 3 can be arranged in a straight line or spiral on the line body 1. The plurality of grooves 3 can be arranged at equal or unequal intervals on the line body 1.

[0033] Please refer to Figures 4, 5, and 6. The irregularly shaped leaf can be a trilobal shape 12. Similarly, the plurality of barbs 2 can be arranged in a straight line or spiral on the line body 1. The plurality of barbs 2 can be arranged at equal or unequal intervals on the line body 1. The plurality of grooves 3 can be arranged in a straight line or spiral on the line body 1. The plurality of grooves 3 can be arranged at equal or unequal intervals on the line body 1.

[0034] Please refer to Figures 7, 8, and 9. The irregularly shaped leaf can be a triangle 13. Similarly, the plurality of barbs 2 can be arranged in a straight line or spiral on the line body 1. The plurality of barbs 2 can be arranged at equal or unequal intervals on the line body 1. The plurality of grooves 3 can be arranged in a straight line or spiral on the line body 1. The plurality of grooves 3 can be arranged at equal or unequal intervals on the line body 1.

[0035] Besides the multi-lobed (11), trilobed (12), or triangular (13) shapes, this irregular structure can also be polygonal, cross-shaped, flat, Y-shaped, H-shaped, or dumbbell-shaped. A polygonal structure refers to a shape with multiple angles; the number of angles and sides is not fixed and can be determined according to actual needs. A dumbbell-shaped structure refers to a structure resembling a dumbbell, typically with round or spherical ends connected by a slender connecting part in the middle, forming a dumbbell shape.

[0036] The lifting wires of this invention with irregular cross-sections were subjected to lifting tests, and the methods and data are as follows:

[0037] [Method of lifting test]:

[0038] The pull test is typically used to measure the maximum force required for an object (in this case, a pull thread) to be pulled out or pulled out of a fixed substrate (in this case, pigskin tissue is used to replace human skin tissue). The pull thread is passed through the pigskin tissue and implanted in the barbed area. After implantation, excess pull thread is removed, and the pigskin tissue is clamped in a tensile testing machine to test the pull-out value, measured in Newtons (N).

[0039] [Data results from the lifting test]:

[0040] Using pure cut lines (with only barbs and grooves) as the reference group, and using different conditions and different irregular structures as the experimental group, we tested the lifting lines.

[0041] Table 1:

[0042]

[0043] The spacing in Table 1 refers to the distance between the barb 2 and the adjacent barb 2 (see Figure 1), in millimeters (mm). The rotation angle refers to the angle at which the barbs 2 rotate at regular intervals on the line body 1 in a spiral arrangement (see Figure 2), in degrees (°). Irregular structures can be seen in the multi-leaf shape 11 in Figure 1, the trilobal shape 12 in Figure 4, and the triangle 13 in Figure 7.

[0044] Table 1 shows that the pull-out values ​​of experimental groups A, B, C, and D are all greater than those of the reference group. A higher pull-out value indicates that the pulling cable can withstand greater force during the pulling process without being pulled out or falling off.

[0045] A higher pull-out value indicates:

[0046] 1. Stronger fixation: The lifting threads are more firmly fixed in the skin tissue, reducing the possibility of them falling off or slipping.

[0047] 2. Higher tensile strength: The lifting cable can withstand greater tensile or external forces, providing a more stable and longer-lasting effect during use.

[0048] 3. Better durability: A higher pull-out value may mean that the drawing wire can maintain its fixed state and avoid premature failure or damage under repeated stretching or stress.

[0049] Therefore, lifting threads with irregular structures can provide better lifting effects compared to those without irregular structures.

[0050] Comparing experimental group A with the reference group in Table 1, the multi-leaf irregular structure can increase the effect by 20% to 40%, i.e., 5.1 - 3.7 / 3.7 = 37.8%.

[0051] Compared with existing prior art, the present invention has the following advantages:

[0052] 1. The barb 2 has at least one flat surface 21, making the barb 2 non-sharp, which can effectively reduce the chance of puncture.

[0053] 2. The thread 1 is provided with the groove 3, which can hold the skin tissue in the groove 3 and hold the skin tissue more securely.

[0054] 3. By incorporating an irregularly shaped cross-section, the contact area of ​​the thread 1 is increased, allowing for a more even distribution of frictional force. This reduces localized frictional pressure and improves durability. Simultaneously, the irregular shape increases the contact area with skin tissue, enhancing friction, reducing thread slippage within the skin, and improving thread stability during tightening or stretching, making it less prone to loosening. This design also enhances suture stability, ensuring a tighter suture and effectively preventing uneven sutures or excessively large gaps. Frictional pressure refers to the pressure generated at the contact surface between the lifting thread and skin tissue. When the lifting thread contacts and moves relative to the skin tissue, friction is generated, acting on the contact surface and creating frictional pressure. Higher frictional pressure generally means a greater positive force per unit area, increasing frictional energy consumption. However, excessive frictional pressure can lead to excessive friction, affecting the lifting effect and potentially causing skin discomfort.

[0055] The above discussion 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.

[0056]

[0057] 1: Line

[0058] 11: Multileaved

[0059] 12: Trifoliate

[0060] 13: Triangle

[0061] 2: Barrel hook

[0062] 21: Plane

[0063] 3: Trench

Claims

1. A lifting cable with an irregular cross-section, comprising: a cable body having an irregular cross-section, wherein the irregular cross-section is multi-lobed, trilobed, or triangular; a plurality of barbs disposed on the cable body, each barb having at least one plane, and the plurality of barbs arranged in a straight or spiral manner on the cable body, the plurality of barbs being arranged at equal or unequal intervals on the cable body, the distance between adjacent barbs being 0.5 mm to 1.5 mm; and a plurality of grooves disposed adjacent to one side of each barb, the plurality of grooves being arranged in a straight or spiral manner on the cable body, the plurality of grooves being arranged at equal or unequal intervals on the cable body.

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