Suture structure with lifting effect

Abstract

The invention discloses a sewing thread structure with a lifting effect, which comprises a thread body with a thread diameter; the hooks are arranged on one surface of the line body, and each hook is provided with at least one plane; the plurality of grooves are adjacently arranged on one side of the hook thorn, the hook thorn has a hook thorn height and a hook thorn width, each groove has a groove length and a groove depth, the hook thorn height is between 0.2 time and 0.35 time of the line diameter, the hook thorn width is between 0.35 time and 0.5 time of the line diameter, and the groove length is between 0.2 time and 0.35 time of the line diameter. The length of the groove is between 0.5 time and 0.8 time of the wire diameter, and the depth of the groove is between 0.3 time and 0.5 time of the wire diameter. Due to the facts that the barbs are arranged on the surface of the line body, and the depth of the groove is 0.33 times of the line diameter, the structural strength is relatively high, and the line is not prone to breakage. Furthermore, the hook thorn is provided with at least one plane, so that the hook thorn is in a non-sharp shape, and the chance of stabbing is effectively reduced.

Description

Technical Field

[0001] The present invention relates to a suture structure, and in particular to a suture structure with a lifting effect. Background Art

[0002] Thread lift (face lift) is a surgical procedure in which special surgical sutures are implanted under the skin using a needle. The sutures have barbs that fix the sutures on the fascia to focus the lift, increase the skin's upward force, and make the skin firm and elastic. The absorbable nature of the thread stimulates collagen proliferation, so the effect will continue to gradually increase, thereby achieving the goal of restoring the skin's firmness and elasticity while lifting sagging skin.

[0003] Sutures, such as the "suture for plastic surgery" in Taiwan Patent No. M580945, include a thread body and a plurality of sharp protrusions. The thread body is cut in the same or opposite directions within a spiral angle by double-knife cutting, so that a plurality of grooves are formed on the surface of the thread body. After each groove is cut, a sharp protrusion for pulling the skin is formed one by one. Furthermore, such as the "guide needle" in Taiwan Patent No. I785810, please refer to Figure 6 of No. I785810. After the suture is cut into the required length, the suture is placed inside the guide needle and extends along the opening of the guide needle. During the operation, the operator first pierces the skin of the surgical object with a sharp object, inserts the guide needle into the skin of the surgical object until it reaches the predetermined position, and then cuts off the excess part of the suture, slowly withdraws the guide needle, and the required part of the suture is left inside the skin of the surgical object.

[0004] However, please refer to No. M580945 Figure 1 and Figure 2 The sutures in this case were cut by double-knife cutting on the surface of the thread body. There were multiple grooves and multiple sharp protrusions on the thread body. Because the groove length was short and inclined, the groove did not have enough space to catch the human tissue, so the sharp protrusions could only grab the human tissue. However, the sharp protrusions could easily pierce the human tissue and increase the pain. Moreover, from No. M580945 Figure 1 and Figure 2 It can be seen that in order to allow the sharp protrusions to protrude from the surface of the wire and to be able to curl up, the cutting depth is almost half of the wire diameter. The structure of the wire is more damaged, the structural strength is relatively weak, and it is easy to break.

[0005] In view of this, how to eliminate the above-mentioned deficiencies is the technical difficulty that the inventor of this case wants to solve. Summary of the invention

[0006] In view of the commonly used techniques, the object of the present invention is to solve and improve the problems and shortcomings of the commonly used techniques and to provide a suture structure with a lifting effect.

[0007] To achieve the purpose of the present invention, the present invention provides a suture structure with a lifting effect, which includes: a wire body having a wire diameter; a plurality of barbs arranged on a surface of the wire body, and the barbs are provided with at least one plane; and a plurality of grooves arranged adjacent to one side of the barbs, wherein the barbs have a barb height and a barb width, the groove has a groove length and a groove depth, and the barb height is between 0.2 times and 0.35 times of the wire diameter, the barb width is between 0.35 times and 0.5 times of the wire diameter, the groove length is between 0.5 times and 0.8 times of the wire diameter, and the groove depth is between 0.3 times and 0.5 times of the wire diameter.

[0008] The barb height is 0.27 times the wire diameter.

[0009] The barb width is 0.46 times the wire diameter.

[0010] The length of the groove is 0.55 times of the wire diameter.

[0011] The groove depth is 0.33 times of the wire diameter.

[0012] Wherein, a plurality of the hooks are arranged on the wire body in a linear or spiral arrangement.

[0013] Wherein, a plurality of the grooves are arranged on the wire body in a linear or spiral arrangement.

[0014] Wherein, a plurality of the hooks are arranged on the wire body in an equal or unequal spacing manner.

[0015] Wherein, a plurality of the grooves are arranged on the wire body in an equal spacing or unequal spacing manner.

[0016] Wherein, the groove is a plane groove or an arc groove.

[0017] Compared with the existing prior art, the present invention has the following development advantages:

[0018] 1. By providing the barb on the surface of the wire, and the groove depth is 0.33 times the wire diameter, the structural strength is relatively strong and not easy to break. In the prior art, the barb is cut on the surface of the wire, and in order to make the barb tilt up, the cutting depth is almost half of the wire diameter, the structure of the wire is more damaged, the structural strength is relatively weak, and it is easy to break.

[0019] 2. The barb is provided with at least one plane, so that the barb is not sharp, which can effectively reduce the chance of stabbing. In the prior art, the barb is sharp and easy to stab human tissue.

[0020] 3. The length of the groove is between 0.5 and 0.8 times the diameter of the wire, which can increase the surface area of ​​the wire. The groove also has enough space to grab human tissue and increase stability. In the prior art, the surface of the wire has multiple inclined grooves, and the groove length is relatively small, which does not have enough space to grab human tissue, so it can only rely on sharp protrusions to grab human tissue. At the same time, it is also necessary to avoid the groove being too large, which will make the groove lose the ability to grab tissue and reduce the strength of the wire, which is equivalent to making the entire wire thinner.

[0021] 4. Limit the width of the barb to between 0.35 and 0.5 times the wire diameter, so that the barb has sufficient thickness, increases degradation time, and avoids losing the barb's configuration if it is too thick, which results in no lifting effect.

[0022] 5. The depth of the groove is between 0.3 and 0.5 times of the wire diameter, so that the groove has a certain depth to clamp the human tissue in the groove, and can clamp the human tissue more firmly.

[0023] 6. Limit the height of the hook to between 0.2 and 0.35 times the wire diameter, so that the hook has a certain height to grab the human tissue and avoid the stress being bent in the opposite direction if the hook is too high, thus losing the lifting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of a suture structure with a lifting effect according to the present invention.

[0025] Figure 2 It is a schematic diagram of the present invention in which the barbs are arranged on the wire in a spiral manner.

[0026] Figure 3 It is a schematic diagram of the present invention in which the barbs are arranged on the wire body in an unequally spaced arrangement.

[0027] Figure 4 It is a top view of the suture structure with lifting effect of the present invention.

[0028] Description of Figure Numbers:

[0029] 10: Suture structure 1: Thread body

[0030] 2: Barb 21: Flat

[0031] 3: Groove X: Wire diameter

[0032] X1: Groove length X2: Hook width

[0033] X3: Groove depth X4: Hook height DETAILED DESCRIPTION

[0034] In order to make it easier to understand the other features and advantages of the present invention and the effects achieved by the present invention, the present invention is now described in detail with reference to the accompanying drawings as follows:

[0035] See also Figure 1 As shown, the present invention provides a suture structure with a lifting effect, which includes: a suture body 1, a plurality of barbs 2 and a plurality of grooves 3.

[0036] The thread body 1 has a thread diameter X. The thread body 1 can be manufactured by common processes in the market, such as cutting, molding or injection. The thread body 1 can be coated with a material for promoting skin repair, such as collagen. The thread 1 can be classified into absorbable or non-absorbable materials according to the material. The absorbable materials include plain catgut, chromic gut, Dexon, Vicryl, Polycaprolactone (PCL), Polypropylene carbonate (PPC), Polytrimethylene carbonate, Polydioxanone (PDO), Polyglycolide (PGA), copolymer (PLGA), lactide (LA) or Polydioxanone (PDS), or the non-absorbable materials include silk, cotton, nylon, polyester, polyethylene, polypropylene, polytetrafluoroethylene, stainless steel or polybutylene. In the present embodiment, the material of the thread 1 is polydioxanone (PDO) or polycaprolactone (PCL). PDO wires are the same as other wires. They are also classified into three types: smooth wires, spiral wires, and serrated wires. The serrated wires are further classified into unidirectional serrated, bidirectional serrated, cross serrated, etc. The main differences between PDO wires and PCL wires are lifespan and tensile strength. PCL wires are longer lasting than PDO wires and have higher tensile strength.

[0037] A plurality of the barbs 2 are disposed on a surface of the thread body 1, and the barbs 2 are provided with at least one plane 21. The barbs 2 are disposed on the thread body 1 in a linear or spiral arrangement. The barbs 2 are disposed on the thread body 1 in an equal or unequal spacing arrangement.

[0038] A plurality of grooves 3 are disposed adjacent to one side of the hook barb 2, wherein the hook barb 2 has a hook barb height X4 and a hook barb width X2, the groove 3 has a groove length X1 and a groove depth X3, and the hook barb height X4 is between 0.2 times and 0.35 times of the wire diameter X, the hook barb width X2 is between 0.35 times and 0.5 times of the wire diameter X, the groove length X1 is between 0.5 times and 0.8 times of the wire diameter X, and the groove depth X3 is between 0.3 times and 0.5 times of the wire diameter X. The groove 3 can be a plane groove or an arc groove. The relatively optimal values ​​of the hook height X4, hook width X2, groove length X1 and groove depth X3 of the suture structure 10 after testing are as follows: the hook height X4 is 0.27 times the wire diameter X; the hook width X2 is 0.46 times the wire diameter X; the groove length X1 is 0.55 times the wire diameter X; and the groove depth X3 is 0.33 times the wire diameter X.

[0039] The suture structure 10 of the present invention was subjected to a tensile test and a degradation test, respectively, and the methods and data are as follows:

[0040] [Tensile test]:

[0041] Principle: The experimental principle of this method is to cut the sample to be tested into small strips of the same width using a specific cutting machine, clamp the cut samples on a tensile testing machine, and stretch them at a constant speed until the sample breaks, and then measure the force the sample can withstand.

[0042] Method: Use a tensile testing machine to clamp the suture structure 10 to the upper and lower clamps of the tensile testing machine to prevent the suture structure 10 from sliding. Set the stretching speed to 250 mm / min. The distance from the fixed point of the clamp to both ends of the suture structure 10 must be greater than 13 mm, and the distance between the two ends of the clamp must be between 125 and 200 mm. When the suture structure 10 is stretched by the tensile testing machine, if the breakage is at the clamp, retesting is required.

[0043] Tensile test results:

[0044] USP2 PDO suture was used for cutting operation, and the suture material properties were tested under different conditions.

[0045] (The following experimental groups 2, 3, and 4 are acceptable)

[0046] Table 1:

[0047]

[0048] [Lifting test]:

[0049] Fresh pig skin tissue purchased on the test day was used to prepare tissue specimens using a scalpel. The pig skin tissue was cut into approximately 5 cm × 5 cm × 1 cm pieces. The suture structure 10 was passed through the pig skin tissue. The implantation length should be 50 ± 2 mm, and the insertion area must be the barb area. After implantation, the excess suture structure 10 was removed, and the pig skin tissue was clamped in a tensile testing machine with a distance of 100 mm between the clamps, and the machine was driven at a speed of 10 mm / min.

[0050] [Data results of the lifting test]:

[0051] USP No. 2 PCL suture was used for compression molding, and the suture material properties were tested under different conditions.

[0052] (Only the following experimental groups 2, 3, and 4 were acceptable).

[0053] Table 2:

[0054]

[0055] In addition, during the degradation process of the suture structure 10, the tension and elongation are first reduced. Since the tensile strength of the present invention is increased, the degradation speed can be relatively slowed down, thereby prolonging the degradation time.

[0056] The above discussion is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Therefore, equivalent modifications, combinations, substitutions or conversions made without departing from the spirit and scope of the present invention should all be included in the scope of the claims of the present invention.

Claims

1. A suture structure with a lifting effect, characterized in that: Include: A linear body has a linear diameter; A plurality of barbs are disposed on a surface of the thread body, and the barbs have at least one plane; and A plurality of grooves are adjacently arranged on one side of the hook barb, wherein the hook barb has a hook barb height and a hook barb width, the groove has a groove length and a groove depth, and the hook barb height is between 0.2 times and 0.35 times of the wire diameter, the hook barb width is between 0.35 times and 0.5 times of the wire diameter, the groove length is between 0.5 times and 0.8 times of the wire diameter, and the groove depth is between 0.3 times and 0.5 times of the wire diameter.

2. The suture structure with lifting effect according to claim 1, characterized in that: The barb height is 0.27 times the wire diameter.

3. The suture structure with lifting effect according to claim 1, characterized in that: The barb width is 0.46 times the wire diameter.

4. The suture structure with lifting effect according to claim 1, characterized in that: The length of the groove is 0.55 times the wire diameter.

5. The suture structure with lifting effect according to claim 1, characterized in that: The groove depth is 0.33 times the wire diameter.

6. The suture structure with lifting effect according to claim 1, characterized in that: A plurality of the hooks are arranged on the wire body in a linear or spiral arrangement.

7. The suture structure with lifting effect according to claim 1, characterized in that: A plurality of the grooves are arranged on the wire body in a linear or spiral arrangement.

8. The suture structure with lifting effect as claimed in claim 1, characterized in that: A plurality of the hooks are arranged on the wire body in an equal or unequal spacing manner.

9. The suture structure with lifting effect as claimed in claim 1, characterized in that: A plurality of grooves are arranged on the wire body in an equal or unequal spacing manner.

10. The suture structure with lifting effect according to claim 1, characterized in that: The groove is a plane groove or an arc groove.

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