Artificial ligament end fixing method and artificial ligament

Abstract

The invention discloses an artificial ligament end fixing method and an artificial ligament. The method for fixing the end of the artificial ligament comprises the steps of S1 and S2. S1 comprises the step of installing the pull wire on a woven part formed by rolling woven cloth. And S2, binding and fixing the end part of the woven part by using a winding wire to form the end part of the artificial ligament. Wherein when the winding wire is used for binding and fixing the end part of the weaving part, the winding wire can be wound at the end part of the weaving part, and a plurality of winding wire coils are formed after winding. After the winding wire binds and fixes the end part of the weaving part, the two ends of the winding wire penetrate through the gap between at least part of the winding wire coil and the weaving part on the inner side of the winding wire coil, so that the end part of the winding wire is pressed on the weaving part by the corresponding winding wire coil, and the end part of the winding wire is fixed; moreover, when the two ends of the winding wire are pressed and fixed on the weaving part by the winding wire coil, the winding wire and the weaving part are not wound. The end part of the artificial ligament is manufactured by the fixing method of the end part of the artificial ligament.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a method for fixing an end of an artificial ligament and an artificial ligament. Background Art

[0002] With the increasing number of patients undergoing arthroscopic anterior cruciate ligament reconstruction, the number of patients undergoing anterior cruciate ligament reconstruction and revision surgery due to various factors has also increased. The failure of the initial reconstruction is mainly manifested as joint instability, which is also the main surgical indication for revision surgery. The LARS artificial ligament has dual advantages when used as a graft in the reconstruction and repair of the anterior and posterior cruciate ligaments. The LARS artificial ligament is mainly composed of three parts: a traction line, a braided part, and a free fiber part. In the method of fixing the traction line at the end of the artificial ligament, the LARS uses the figure-8 winding method to fix the traction line and the end-pulling method to wrap the ligament.

[0003] At present, the LARS uses the figure-8 winding method to fix the traction wire at the end of the artificial ligament. The traction wire will form a double coil on the outer ring of the ligament, causing the ligament to have a larger diameter and a wider area. According to clinical feedback, the wider diameter area here causes the ligament to be more rubbed by the bone channel during implantation, which causes inconvenience to the clinician in mild cases and requires the bone channel to be re-drilled in severe cases.

[0004] LARS uses the ordinary rope-end method to fix the winding wire at the end of the artificial ligament. This method will, on the one hand, form a wire elbow at the end of the winding wire, causing the winding surface to be rough and uneven, increasing the friction with the bone canal; on the other hand, in the process of pulling back the wire end, it will shrink and deform, resulting in an uneven end, which will lead to loosening. Summary of the invention

[0005] The object of the present invention is to provide a method for fixing the end of an artificial ligament and an artificial ligament, so as to solve the problem in the prior art that an artificial ligament may form a wire elbow when being wound and fixed by a winding wire.

[0006] The technical solution of the present invention is: A method for fixing an end of an artificial ligament, comprising: S1: Install the traction line on the woven part made of rolled woven fabric; S2: Binding and fixing the end of the braided portion with a winding wire to form the end of the artificial ligament; When the winding wire is used to bind and fix the end of the braided portion, the winding wire is wound around the end of the braided portion to form a plurality of winding wire coils; After the winding wire binds and fixes the end of the woven part, both ends of the winding wire will pass through the gap between at least a portion of the winding wire coil and the woven part inside it, so that the end of the winding wire will be pressed against the woven part by the corresponding winding wire coil, thereby fixing the end of the winding wire; and when the two ends of the winding wire are pressed and fixed on the woven part by the winding wire coil, the two will not be entangled.

[0007] In a method for fixing an artificial ligament end provided in a preferred embodiment, S1 comprises: S11: Both ends of the pulling line pass through the woven fabric from the back side of the woven fabric respectively, and then extend out from the front side of the woven fabric, and the two ends of the pulling line are placed toward the end of the woven part so that both ends of the pulling line extend out of the end of the woven fabric; S12: rolling the two edges of the fabric in the width direction toward the middle respectively to form two rolls of fabric; S13: including sewing fabric and fixing traction line; The stitching of woven fabrics comprises: the bottoms of the two rolls of woven fabrics are connected by the woven fabrics themselves, the two rolls of woven fabrics are pressed close to each other and the tops of the two rolls of woven fabrics are stitched to form a roll; wherein the side opposite to the bottom is the top; The fixed traction line includes: a traction line loop of the traction line left on the back of the woven cloth, passing through the rolled woven cloth and then reaching the top side of the rolled woven cloth, then twisting the traction line loop and then putting it over the rolled woven cloth, pulling the two ends of the traction line so that the traction line loop is tightly put on the rolled woven cloth; After the two rolls of woven cloth are squeezed close to each other and sewn into one roll, the two holes on the woven cloth for passing the traction line are located on the outermost layer of the woven cloth and at the top of the woven cloth sewn into one roll.

[0008] In a method for fixing the end of an artificial ligament provided in a preferred embodiment, before the fabric is rolled, the distance between the two holes on the fabric for passing the traction wire in the width direction of the fabric is 1 / 10 to 1 / 5 of the width of the fabric at that location.

[0009] In a method for fixing an artificial ligament end provided in a preferred embodiment, the S13 comprises: The two rolls of woven cloth are squeezed together to form a roll shape, and then they are sewn toward the end of the woven part, and the sewing is stopped when it is a certain distance away from the hole on the woven cloth for the traction line to pass through; the traction line rope loop on the back of the woven cloth is passed through the rolled woven cloth to the top side of the rolled woven cloth, and then the traction line rope loop is twisted and then put over the rolled woven cloth; the remaining sewing is continued, wherein the woven cloth part corresponding to the end of the woven part is not sewn; finally, the two ends of the traction line are pulled so that the traction line rope loop is tightly put on the rolled woven cloth.

[0010] In a method for fixing an artificial ligament end provided in a preferred embodiment, S1 comprises: S11': rolling the two sides of the woven cloth in the width direction toward the middle respectively to form two rolls of woven cloth; S12': Winding the traction line around the two rolls of fabric, after winding, the middle of the traction line is placed horizontally on the top of the two rolls of fabric, and the two ends of the traction line extend to the bottom of the two rolls of fabric respectively and then wind back to the top of the two rolls of fabric; S13': insert a traction needle fixed at one end of the traction line into one of the rolls of woven fabric, and after the traction needle passes through several layers of woven fabric, move toward the end of the woven fabric until the traction line fixed thereto is brought out of the end of the woven fabric; insert another traction needle fixed at the other end of the traction line into another roll of woven fabric, and after the other traction needle passes through several layers of woven fabric, move toward the end of the woven fabric until the traction line fixed thereto is brought out of the end of the woven fabric; S14': the bottoms of the two rolls of fabric are connected by the fabric itself, the two rolls of fabric are pressed close to each other and the tops of the two rolls of fabric are sewn together to form one roll; S15': pulling the two ends of the pulling line to tighten the pulling line on the woven fabric formed into a roll after sewing; Among them, the two ends of the traction line cross each other when extending from the bottom of the two rolls of fabric and then wrap around the top of the two rolls of fabric, and no intersection is formed after wrapping around the top of the two rolls of fabric; the two traction needles respectively fixedly connected to the two ends of the traction line are respectively fixedly connected to the corresponding end of the traction line before S13'.

[0011] In a method for fixing the end of an artificial ligament provided in a preferred embodiment, in the axial direction of the braided portion, the direction opposite to the end direction of the braided portion is the middle direction of the braided portion; the winding wire is divided into three sections, namely the first end of the winding wire, the middle of the winding wire and the second end of the winding wire; S2 includes: S21: placing the winding wire at the end of the braided portion; the placing method is that the first end of the winding wire extends toward the end of the braided portion, and the middle of the winding wire is wound around once, so that the second end of the winding wire extends toward the middle of the braided portion; S22: Using the middle part of the winding wire to bind the end of the braided portion, when winding, the middle part of the winding wire is wound from the part close to the second end of the winding wire, and the end of the braided portion is wound from the outermost end toward the middle part of the braided portion; S23: After the end of the braided portion is fully wound around the middle of the winding wire, the first end of the winding wire is pulled so that the winding wire is bound and tightened on the end of the braided portion.

[0012] In a method for fixing the end of an artificial ligament provided in a preferred embodiment, in the axial direction of the braided portion, the direction opposite to the end direction of the braided portion is the middle direction of the braided portion; S2 comprises: S21': tying a knot at the outermost end of the braided portion with the winding wire to tighten it, the winding wire is divided into two sections from the knotted part, namely a first section and a second section, and the first section of the winding wire is placed on the braided portion in a manner of extending toward the middle of the braided portion; S22': Use the second section of the winding wire to bind the end of the braided portion. When winding, the second section of the winding wire starts from the part close to the knot of the winding wire, and starts from the outermost end on the end of the braided portion to the middle of the braided portion. When the second section of the winding wire is wound on the end of the braided portion, part of the auxiliary wire will be placed on the end of the braided portion and wound together. After the winding is completed, both ends of the auxiliary wire are not covered by the winding wire coil and extend toward the end of the braided portion. Part of the auxiliary wire is not covered by the winding wire coil in the middle direction of the braided portion, and the uncovered part forms an auxiliary wire rope bend. S23': the second section of the winding wire passes through the auxiliary wire bend after winding, and then the two ends of the auxiliary wire are pulled, and the second section of the winding wire passes through the gap between the winding wire coil and the braided portion through the auxiliary wire bend and then pulled out of the covering part of the winding wire coil; S24': Pull the second section of the winding wire from one end of the second section of the winding wire away from the knotting position, and tighten the second section of the winding wire so that it is bound and tightened on the end of the braided portion.

[0013] In a method for fixing an artificial ligament end portion provided in a preferred embodiment, the S22' comprises: S221': the second section of the winding wire starts to be wound around the end of the braided portion from the outermost end thereof, and stops winding after winding a certain distance; S222': placing the auxiliary wire on the end of the braided portion, the placement method is that the middle of the auxiliary wire is located on one side of the middle direction of the end of the braided portion, and the middle of the auxiliary wire is bent to form the auxiliary wire bend, and both ends of the auxiliary wire extend toward the end of the braided portion and extend to the winding wire coil area at this time or pass through and extend out of the winding wire coil area at this time; S223': the winding wire continues to be wound until the end of the braided portion is fully wound, and at this time, the auxiliary wire on the braided portion is wound together during the winding.

[0014] In a method for fixing the end of an artificial ligament provided in a preferred embodiment, in the axial direction of the braided portion, the length of the auxiliary wire together with the end of the braided portion wound by the winding wire accounts for 1 / 3 to 2 / 3 of the length of the end of the braided portion.

[0015] An artificial ligament, the end of which is made by any one of the above-mentioned methods for fixing the end of an artificial ligament.

[0016] Due to the adoption of the above technical solution, the present invention has the following advantages and positive effects compared with the prior art: The fixing method of the end of an artificial ligament and the artificial ligament provided by the present invention use a method for binding and fixing the end of a braided part with a winding wire, so that after the binding is completed, both ends of the winding wire will pass through at least a portion of the gap between the winding wire coil and the corresponding braided part, so that the two ends of the winding wire are pressed on the braided part by the winding wire coil, so that the winding wire will not fall apart at the end of the braided part. At the same time, since the two ends of the winding wire are not entangled when they are pressed and fixed on the end of the braided part by the winding wire coil, no wire elbow will be generated, and the winding surface is smooth and smooth, with little friction with the bone channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the following detailed description of the preferred embodiment.The drawings are only for the purpose of illustrating the preferred embodiments and are not to be construed as limiting the invention.

[0018] Figure 1 is a schematic diagram of an end portion of an artificial ligament in the prior art; Figure 2 is a schematic structural diagram of an artificial ligament of the present invention; Figures 3 to 7 is a schematic diagram of the installation process of a traction wire in an artificial ligament in Example 1 (corresponding to step S1); Figures 8 to 11 is a schematic diagram of a process of fixing the end of a braided portion of an artificial ligament in Example 1 (corresponding to step S2); Figures 12 to 15 is a schematic diagram of a process of fixing the end of a braided portion of an artificial ligament in Example 2 (corresponding to step S2); Figures 16 to 18 This is a schematic diagram of the installation process of a traction wire in an artificial ligament in Example 3 (corresponding to step S1).

[0019] Description of reference numerals: 1: Free wire part; 2: woven part; 21: woven fabric; 22: end of woven part; 23: seam; 3: traction line; 31: traction line rope ring; 4: winding wire; 41: first end of winding wire; 42: middle of winding wire; 43: second end of winding wire; 44: first section of winding wire; 45: second section of winding wire; 5: auxiliary line; 51: auxiliary line bend; A: Line elbow. DETAILED DESCRIPTION

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0021] In order to simplify the drawings, only the parts related to the present invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0022] like Figure 2As shown, the artificial ligament generally includes a free wire portion 1 and a braided portion 2 located at both ends of the free wire portion 1, as well as a traction line 3 and an auxiliary line 5. The free wire portion 1 includes a plurality of free wires arranged side by side and spaced apart, and the two ends of the free wires are respectively connected to the woven fabric 21 in the braided portion 2 at both ends. Of the two ends of the braided portion 2, the end away from the free wire portion 1 is the end 22 of the braided portion, and the other end (that is, the end connected to the free wire portion 1) is referred to as the middle part of the braided portion 2 for the convenience of the following description. The braided portion 2 is mainly formed by rolling the woven fabric 21, and then the end 22 of the braided portion is fixed by a winding line 4, and the part of the braided portion 2 except its end is fixed by sewing. The traction line 3 is fixed at the end 22 of the braided portion.

[0023] See also Figures 3 to 12 This embodiment provides a method for fixing an end of an artificial ligament and an artificial ligament. The end of the artificial ligament is made using the method for fixing the end of an artificial ligament.

[0024] The method for fixing the end of the artificial ligament comprises: S1: Install the traction line 3 on the woven part 2 rolled from the woven fabric 21; S2: Using the winding wire 4 to bind and fix the end 22 of the braided portion to form the end of the artificial ligament; When the winding wire 4 is used to bind and fix the end 22 of the braided portion, the winding wire 4 is wound around the end 22 of the braided portion to form a plurality of winding wire coils; After the winding wire 4 binds and fixes the end 22 of the woven part, both ends of the winding wire 4 will pass through the gap between at least part of the winding wire coil and the end 22 of the woven part inside it, so that the end of the winding wire 4 will be pressed onto the end 22 of the woven part by the corresponding winding wire coil, thereby fixing the end of the winding wire 4; and, when the two ends of the winding wire 4 are pressed and fixed on the end 22 of the woven part by the winding wire coil, the two will not be entangled.

[0025] In the prior art, the two ends of the winding wire 4 are generally fixed in that one end (referred to as the fixed end for ease of description) is placed on the end 22 of the braided portion from the beginning of the winding of the winding wire 4 and is wound together with the end 22 of the braided portion, so that it is pressed and fixed to the end 22 of the braided portion by the winding wire coil, and the other end (referred to as the winding end for ease of description) is wound with the fixed end and then pressed between the already wound winding wire coil and the end 22 of the braided portion by some method, and is pressed and fixed to the end 22 of the braided portion by the winding wire coil, and the winding end and the fixed end are pressed between the winding wire coil and the end 22 of the braided portion in a wound form to form a wire elbow A (such as Figure 1As shown), that is, the smooth winding surface formed by the original plurality of winding wire coils laid flat on the end 22 of the braided portion will form an abrupt protrusion at the winding end and the fixed end.

[0026] The artificial ligament formed by the fixing method of the end of the artificial ligament provided by the present embodiment has two ends of the winding wire 4 passing through the gap between at least part of the winding wire coil and the corresponding end 22 of the braided part after the winding wire 4 is tied and fixed, so that the two ends of the winding wire 4 are pressed on the end 22 of the braided part by the winding wire coil, so that the winding wire 4 will not be loosened at the end 22 of the braided part. At the same time, since the two ends of the winding wire 4 are not entangled when they are pressed and fixed on the end 22 of the braided part by the winding wire coil, the two ends are not entangled, so no wire elbow A is generated, the winding surface is smooth and smooth, and the friction with the bone channel is small.

[0027] The method for fixing the end of the artificial ligament of this embodiment is further described below.

[0028] Step S1 (installing the traction wire 3 on the woven portion 2 rolled from the woven fabric 21 ) mainly includes four steps, namely S11 , S12 and S13 .

[0029] S11: The two ends of the traction line 3 pass through the woven fabric 21 from the back side of the woven fabric 21, and then extend from the front side of the woven fabric 21, and the two ends of the traction line 3 are placed toward the end 22 of the woven portion so that both ends of the traction line 3 extend out of the end of the woven fabric 21, as shown in FIG. Figure 3 shown.

[0030] Specifically, the distance between the hole on the fabric 21 for the traction wire 3 to pass through and the outermost end of the end of the fabric 21 (the end of the fabric 21, that is, the end 22 of the woven portion formed after rolling) is preferably 40 to 60 mm, which can be selected according to the different specifications of the ligament; before the fabric 21 is rolled, the two holes on the fabric 21 for the traction wire 3 to pass through are designed to be centered on the fabric 21, and a space is required between the two holes. Preferably, the distance between the two holes on the fabric 21 for the traction wire 3 to pass through in the width direction of the fabric 21 is 1 / 10 to 1 / 5 of the width of the fabric 21 at that location, which can be selected according to the different specifications of the ligament.

[0031] The traction line 3 may be a braided line, a stranded line, a monofilament, or the like.

[0032] S12 : Roll the two sides of the woven fabric 21 in the width direction toward the middle to form two rolls of the woven fabric 21 .

[0033] S13: includes sewing the fabric 21 and fixing the traction line 3.

[0034] Sewing the fabric 21 includes: connecting the bottoms of two rolls of fabric 21 through the fabric 21 itself, squeezing the two rolls of fabric 21 close to each other and sewing the tops of the two rolls of fabric 21 to form a roll; wherein the side opposite to the bottom is the top. The seam 23 formed when the two rolls of fabric 21 are sewn is located at the top.

[0035] The fixed traction line 3 includes: a traction line loop 31 (such as Figure 4 As shown in FIG. 1 ), the rolled fabric 21 is passed through and then reaches the top side of the rolled fabric 21 (as shown in FIG. 1 ). Figure 5 Then twist the traction rope ring 31 and then put it over the rolled fabric 21 (as shown in FIG. Figure 6 As shown in FIG. 1 ), pull the two ends of the traction line 3 so that the traction line loop 31 is tightly wrapped around the rolled fabric 21 (as shown in FIG. 1 ). Figure 7 as shown).

[0036] After the two rolls of fabric 21 are squeezed close to each other and sewn into one roll, the two holes on the fabric 21 for the traction line 3 to pass through are located on the outermost layer of the fabric 21 and at the top of the fabric 21 sewn into one roll, that is, Figure 4 As shown in . In this way, except for a small part, the traction line 3 has only a single loop on the braided part 2. Compared with the double loop in the prior art, the area of ​​the artificial ligament with a larger diameter formed by the traction line 3 is narrower, so that the friction with the bone canal during the implantation process is smaller. In addition, the inventor found that when the traction line 3 breaks under tension, the breaking point is the position where the ends 22 of the traction line 3 extend out of the braided part. Therefore, this embodiment changes from the double loop in the prior art to a single loop, which can solve the problem of a wider area with a larger diameter while ensuring that the force value used in clinical operation remains unchanged.

[0037] In the S23, a more specific step may be: squeezing the two rolls of woven fabric 21 close to each other to form a roll shape, and then sewing, sewing in the direction of the end 22 of the woven part, and stopping when sewing to a certain distance from the hole on the woven fabric 21 for the traction line 3 to pass through; passing the traction line rope loop 31 on the back of the woven fabric 21 through the rolled woven fabric 21 to the top side of the rolled woven fabric 21, and then twisting the traction line rope loop 31 and then putting it over the rolled woven fabric 21; and then continuing to complete the remaining sewing, wherein the part of the woven fabric 21 corresponding to the end 22 of the woven part is not sewn; finally, pulling the two ends of the traction line 3 so that the traction line rope loop 31 is tightly wrapped around the rolled woven fabric 21. When pulling the two ends of the traction line 3, the ends of the two ends of the traction line 3 can be aligned first and then a pulling force can be applied to the ends of the two ends of the traction line 3 at the same time, so that the lengths of the outermost ends of the two ends of the traction line 3 extending out of the end 22 of the woven part are kept as consistent as possible.

[0038] Step S2 (binding and fixing the end 22 of the braided portion with the winding wire 4 to form the end of the artificial ligament) mainly includes four steps, namely S21, S22, S23 and S24. For the convenience of description, along the axial direction of the braided portion 2, the direction opposite to the direction of the end 22 of the braided portion is the middle direction of the braided portion 2; the winding wire 4 is divided into three sections, namely the first end 41 of the winding wire, the middle part 42 of the winding wire and the second end 43 of the winding wire.

[0039] S21: Place the winding wire 4 at the end 22 of the braided portion; the arrangement is such that the first end 41 of the winding wire extends toward the end 22 of the braided portion, and the middle 42 of the winding wire is wound around once, so that the second end 43 of the winding wire extends toward the middle of the braided portion 2. Figure 8 That is, the winding wire 4 is laid flat on the end 22 of the braided portion so that the two ends face in different directions.

[0040] S22: Use the middle part 42 of the winding wire to bind the end part 22 of the braided part. Fig. 9 and Fig.10 When winding, the middle portion 42 of the winding wire starts from the portion near the second end 43 of the winding wire, and the end portion 22 of the braided portion starts from the outermost end toward the middle portion 2 of the braided portion.

[0041] S23: After the end 22 of the braided portion is fully wound around the middle portion 42 of the winding wire (such as Fig.10 As shown), the first end 41 of the winding wire is pulled so that the winding wire 4 is bound and tightened on the end portion 22 of the braided portion.

[0042] S24: Cut off the parts of the winding wire 4 that are not covered by the winding wire coil at both ends, such as Fig.11 shown.

[0043] Preferably, when the winding wire 4 is wound around the end 22 of the braided portion, it ends at a position 15 to 25 mm (the specific amount can be selected according to the different specifications of the ligament) away from the outermost end of the end 22 of the braided portion, that is, the middle part 42 of the winding wire fully winds around the end 22 of the braided portion; and during the winding process, the middle part 42 of the winding wire makes the formed winding wire coils as parallel and tight as possible, and the first end 41 of the winding wire and the second end 43 of the winding wire, which are pressed against the end 22 of the braided portion by the winding wire coil, are parallel and close together.

[0044] See also Figures 3 to 7 , Figures 12 to 15 This embodiment provides a method for fixing an end of an artificial ligament and an artificial ligament. The end of the artificial ligament is made using the method for fixing the end of an artificial ligament.

[0045] The method for fixing the end of the artificial ligament comprises: S1: Install the traction line 3 on the woven part 2 rolled from the woven fabric 21; S2: Using the winding wire 4 to bind and fix the end 22 of the braided portion to form the end of the artificial ligament; When the winding wire 4 is used to bind and fix the end 22 of the braided portion, the winding wire 4 is wound around the end 22 of the braided portion to form a plurality of winding wire coils; After the winding wire 4 binds and fixes the end 22 of the woven part, both ends of the winding wire 4 will pass through the gap between at least part of the winding wire coil and the end 22 of the woven part inside it, so that the end of the winding wire 4 will be pressed onto the end 22 of the woven part by the corresponding winding wire coil, thereby fixing the end of the winding wire 4; and, when the two ends of the winding wire 4 are pressed and fixed on the end 22 of the woven part by the winding wire coil, the two will not be entangled.

[0046] In the prior art, the two ends of the winding wire 4 are generally fixed in that one end (referred to as the fixed end for ease of description) is placed on the end 22 of the braided portion from the beginning of winding of the winding wire 4 and is wound together with the end 22 of the braided portion, thereby being pressed and fixed to the end 22 of the braided portion by the winding wire coil, while the other end (referred to as the winding end for ease of description) is wound with the fixed end and then pressed between the already wound winding wire coil and the end 22 of the braided portion by some method, and is pressed and fixed to the end 22 of the braided portion by the winding wire coil, and the winding end and the fixed end are pressed between the winding wire coil and the end 22 of the braided portion in a wound form to form a wire elbow A, which is equivalent to the smooth and flowing winding surface formed by the original many winding wire coils being flat on the end 22 of the braided portion, and a protruding protrusion is formed at the winding point of the winding end and the fixed end.

[0047] The artificial ligament formed by the fixing method of the end of the artificial ligament provided by the present embodiment has two ends of the winding wire 4 passing through the gap between at least part of the winding wire coil and the corresponding end 22 of the braided part after the winding wire 4 is tied and fixed, so that the two ends of the winding wire 4 are pressed on the end 22 of the braided part by the winding wire coil, so that the winding wire 4 will not be loosened at the end 22 of the braided part. At the same time, since the two ends of the winding wire 4 are not entangled when they are pressed and fixed on the end 22 of the braided part by the winding wire coil, the two ends are not entangled, so no wire elbow A is generated, the winding surface is smooth and smooth, and the friction with the bone channel is small.

[0048] The method for fixing the end of the artificial ligament of this embodiment is further described below.

[0049] Step S1 (installing the traction wire 3 on the woven portion 2 rolled from the woven fabric 21 ) mainly includes four steps, namely S11 , S12 and S13 .

[0050] S11: The two ends of the traction line 3 pass through the woven fabric 21 from the back side of the woven fabric 21, and then extend from the front side of the woven fabric 21, and the two ends of the traction line 3 are placed toward the end 22 of the woven portion so that both ends of the traction line 3 extend out of the end of the woven fabric 21, as shown in FIG. Figure 3 shown.

[0051] Specifically, the distance between the hole on the fabric 21 for the traction wire 3 to pass through and the outermost end of the end of the fabric 21 (the end of the fabric 21, that is, the end 22 of the woven portion formed after rolling) is preferably 40 to 60 mm, which can be selected according to the different specifications of the ligament; before the fabric 21 is rolled, the two holes on the fabric 21 for the traction wire 3 to pass through are designed to be centered on the fabric 21, and a space is required between the two holes. Preferably, the distance between the two holes on the fabric 21 for the traction wire 3 to pass through in the width direction of the fabric 21 is 1 / 10 to 1 / 5 of the width of the fabric 21 at that location, which can be selected according to the different specifications of the ligament.

[0052] The traction line 3 may be a braided line, a stranded line, a monofilament, or the like.

[0053] S12 : Roll the two sides of the woven fabric 21 in the width direction toward the middle to form two rolls of the woven fabric 21 .

[0054] S13: includes sewing the fabric 21 and fixing the traction line 3.

[0055] Sewing the fabric 21 includes: connecting the bottoms of two rolls of fabric 21 through the fabric 21 itself, squeezing the two rolls of fabric 21 close to each other and sewing the tops of the two rolls of fabric 21 to form a roll; wherein the side opposite to the bottom is the top. The seam 23 formed when the two rolls of fabric 21 are sewn is located at the top.

[0056] The fixed traction line 3 includes: a traction line loop 31 (such as Figure 4 As shown in FIG. 1 ), the rolled fabric 21 is passed through and then reaches the top side of the rolled fabric 21 (as shown in FIG. 1 ). Figure 5 Then twist the traction rope ring 31 and then put it over the rolled fabric 21 (as shown in FIG. Figure 6 As shown in FIG. 1 ), pull the two ends of the traction line 3 so that the traction line loop 31 is tightly wrapped around the rolled fabric 21 (as shown in FIG. 1 ). Figure 7 as shown).

[0057] After the two rolls of fabric 21 are squeezed close to each other and sewn into one roll, the two holes on the fabric 21 for the traction line 3 to pass through are located on the outermost layer of the fabric 21 and at the top of the fabric 21 sewn into one roll, that is, Figure 4As shown in . In this way, except for a small part, the traction line 3 has only a single loop on the braided part 2. Compared with the double loop in the prior art, the area of ​​the artificial ligament with a larger diameter formed by the traction line 3 is narrower, so that the friction with the bone canal during the implantation process is smaller. In addition, the inventor found that when the traction line 3 breaks under tension, the breaking point is the position where the ends 22 of the traction line 3 extend out of the braided part. Therefore, this embodiment changes from the double loop in the prior art to a single loop, which can solve the problem of a wider area with a larger diameter while ensuring that the force value used in clinical operation remains unchanged.

[0058] In the S23, a more specific step may be: squeezing the two rolls of woven fabric 21 close to each other to form a roll shape, and then sewing, sewing in the direction of the end 22 of the woven part, and stopping when sewing to a certain distance from the hole on the woven fabric 21 for the traction line 3 to pass through; passing the traction line rope loop 31 on the back of the woven fabric 21 through the rolled woven fabric 21 to the top side of the rolled woven fabric 21, and then twisting the traction line rope loop 31 and then putting it over the rolled woven fabric 21; and then continuing to complete the remaining sewing, wherein the part of the woven fabric 21 corresponding to the end 22 of the woven part is not sewn; finally, pulling the two ends of the traction line 3 so that the traction line rope loop 31 is tightly wrapped around the rolled woven fabric 21. When pulling the two ends of the traction line 3, the ends of the two ends of the traction line 3 can be aligned first and then a pulling force can be applied to the ends of the two ends of the traction line 3 at the same time, so that the lengths of the outermost ends of the two ends of the traction line 3 extending out of the end 22 of the woven part are kept as consistent as possible.

[0059] Step S2 (binding and fixing the end 22 of the braided portion with the winding wire 4 to form the end of the artificial ligament) mainly includes four steps, namely S21', S22', S23' and S24'. For the convenience of description, along the axial direction of the braided portion 2, the direction opposite to the direction of the end 22 of the braided portion is the middle direction of the braided portion 2.

[0060] S21': Use the winding wire 4 to tie a knot at the outermost end of the end 22 of the braided portion, and the winding wire 4 is divided into two sections from the knot, namely the first section and the second section. The first section 44 of the winding wire is placed on the braided portion 2 in a manner extending toward the middle of the braided portion 2, such as Fig.12 shown.

[0061] S22': Use the second section 45 of the winding wire to bind the end 22 of the braided part. When winding, the second section 45 of the winding wire starts from the part close to the knot of the winding wire 4, and starts from the outermost end on the end 22 of the braided part to the middle of the braided part 2. When the second section 45 of the winding wire is wound on the end 22 of the braided part, part of the auxiliary wire 5 will be placed on the end 22 of the braided part and wound together. After the winding is completed, both ends of the auxiliary wire 5 are not covered by the winding wire coil and extend toward the end 22 of the braided part. Part of the auxiliary wire 5 in the middle direction of the braided part 2 is not covered by the winding wire coil, and the uncovered part forms an auxiliary wire rope bend 51.

[0062] Specifically, the S22' may include S221', S222' and S223'.

[0063] S221': The second section 45 of the winding wire starts to circle around the end 22 of the braided portion from its outermost end, and stops winding after winding a certain distance. In this embodiment, it is preferred that the winding wire 4 stops winding when it is halfway through the circle, that is, it stops at the center of the end 22 of the braided portion in its axial direction.

[0064] S222': Place the auxiliary wire 5 on the end 22 of the braided portion, and place it in such a way that the middle of the auxiliary wire 5 is located on one side of the middle direction of the end of the braided portion 2, and the middle of the auxiliary wire 5 is bent to form an auxiliary wire rope bend 51, and both ends of the auxiliary wire 5 extend toward the end 22 of the braided portion and extend to the winding wire coil area at this time or pass through and extend out of the winding wire coil area at this time. In this embodiment, preferably, both ends of the auxiliary wire 5 extend toward the end 22 of the braided portion and pass through and extend out of the winding wire coil area at this time, such as Fig.13 shown.

[0065] S223 ′: the winding wire 4 continues to be wound until the end 22 of the braided portion is fully wound, and the auxiliary wire 5 on the end 22 of the braided portion is wound together during the winding.

[0066] Preferably, in the axial direction of the braided portion 2, the length of the auxiliary wire 5 and the wound wire loops together with the end portion 22 of the braided portion accounts for 1 / 3 to 2 / 3 of the length of the end portion 22 of the braided portion, and specifically in the present embodiment, preferably one half.

[0067] S23': The second section 45 of the winding line passes through the auxiliary line bend 51 (such as Fig.14 As shown), then pull the two ends of the auxiliary wire 5, pass the second section 45 of the winding wire through the gap between the winding wire coil and the end 22 of the braided portion through the auxiliary wire rope bend 51, and then pull out the covering part of the winding wire coil.

[0068] S24': Pull the second section 45 of the winding wire from one end of the second section 45 of the winding wire away from the knot, and tighten it so that the second section 45 of the winding wire is bound and tightened on the end 22 of the braided portion, and finally cut off the parts of the two ends of the winding wire 4 that are not covered by the winding wire coils, such as Fig.15 Of the two ends of the second section 45 of the winding wire, one end is an end that cooperates with the first section 44 of the winding wire to be knotted on the end 22 of the braided portion, and the other end is an end away from the knot.

[0069] This embodiment provides a method for fixing an end of an artificial ligament and an artificial ligament, wherein the end of the artificial ligament is made by using the method for fixing an end of an artificial ligament. The method for fixing an end of an artificial ligament provided in this embodiment is based on Embodiment 1 or Embodiment 2, and differs from Embodiment 1 or Embodiment 2 in that step S1 (installing the traction line 3 on the woven portion 2 rolled from the woven fabric 21) in this embodiment is different.

[0070] In this embodiment, step S1 (installing the pulling wire 3 on the woven portion 2 rolled from the woven fabric 21 ) mainly includes five steps, namely S11 ′, S12 ′, S13 ′, S14 ′ and S15 ′.

[0071] S11': Roll the two sides of the fabric 21 in the width direction toward the middle to form two rolls of fabric 21. Fig.16 shown.

[0072] S12 ′: Wind the traction line 3 on the two rolls of fabric 21 . After winding, the middle of the traction line 3 is placed horizontally on the top of the two rolls of fabric 21 , and the two ends of the traction line 3 extend to the bottom of the two rolls of fabric 21 and then wind back to the top of the two rolls of fabric 21 .

[0073] S13': insert a traction needle fixed at one end of the traction line 3 into one of the rolls of fabric 21, and the traction needle passes through several layers of fabric 21 and then moves toward the end of the fabric 21 until the traction line 3 fixed thereto is brought out of the end of the fabric 21; insert another traction needle fixed at the other end of the traction line 3 into another roll of fabric 21, and the other traction needle passes through several layers of fabric 21 and then moves toward the end of the fabric 21 until the traction line 3 fixed thereto is brought out of the end of the fabric; Fig.17 shown.

[0074] S14': the bottoms of the two rolls of fabric 21 are connected by the fabric 21 itself, the two rolls of fabric 21 are squeezed close to each other and the tops of the two rolls of fabric 21 are sewn together to form one roll; S15': Pull the two ends of the traction line 3 to tighten the traction line 3 on the woven fabric 21 formed into a roll after sewing. Fig.18 shown.

[0075] The two ends of the traction line 3 cross each other when extending from the bottom of the two rolls of fabric 21 and then wrap around the top of the two rolls of fabric 21. After wrapping around the top of the two rolls of fabric 21, no cross is formed. For details, please refer to Fig.17 As for the two traction needles fixedly connected to the two ends of the traction line 3 respectively, it does not matter when they are connected to the corresponding end of the traction line 33 as long as it is before step S13'.

[0076] Preferably, after the fabric 21 is sewn into a roll, two holes are formed on the outermost layer of the fabric by two traction needles, and the distance between the two holes in the width direction of the fabric 21 is 1 / 10 to 1 / 5 of the width of the fabric 21 at that point, and the specific distance can be selected according to the different specifications of the ligament.

[0077] The traction line 3 is fixed to the braided portion 2 by the method shown in this embodiment, and after the traction line 3 is tightened, both ends of the traction line 3 pass through the multi-layer woven fabric 21 and then pass out from the ends of the woven fabric 21. Therefore, when the traction line 3 is pulled, the artificial ligament made by the method provided by this embodiment is not likely to be torn by pulling the traction line 3 at the part of the woven fabric 21 where the hole for the traction line 3 to pass through (that is, the hole formed by the traction needle) is provided, and the traction line 3 is less likely to be loosened or detached from the braided portion 2.

[0078] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they still fall within the protection scope of the present invention.

Claims

1. A method for fixing the end of an artificial ligament, characterized in that: include: S1: Install the traction line on the woven part made of rolled woven fabric; S2: Binding and fixing the end of the braided portion with a winding wire to form the end of the artificial ligament; When the winding wire is used to bind and fix the end of the braided portion, the winding wire is wound around the end of the braided portion to form a plurality of winding wire coils; After the winding wire binds and fixes the end of the woven part, both ends of the winding wire will pass through the gap between at least a portion of the winding wire coil and the woven part inside it, so that the end of the winding wire will be pressed against the woven part by the corresponding winding wire coil, thereby fixing the end of the winding wire; and when the two ends of the winding wire are pressed and fixed on the woven part by the winding wire coil, the two will not be entangled.

2. The method for fixing the end of an artificial ligament according to claim 1, characterized in that: The S1 includes: S11: Both ends of the pulling line pass through the woven fabric from the back side of the woven fabric respectively, and then extend out from the front side of the woven fabric, and the two ends of the pulling line are placed toward the end of the woven part so that both ends of the pulling line extend out of the end of the woven fabric; S12: rolling the two edges of the fabric in the width direction toward the middle respectively to form two rolls of fabric; S13: including sewing fabric and fixing traction line; The stitching of woven fabrics comprises: the bottoms of the two rolls of woven fabrics are connected by the woven fabrics themselves, the two rolls of woven fabrics are pressed close to each other and the tops of the two rolls of woven fabrics are stitched to form a roll; wherein the side opposite to the bottom is the top; The fixed traction line includes: a traction line loop of the traction line left on the back of the woven cloth, passing through the rolled woven cloth and then reaching the top side of the rolled woven cloth, then twisting the traction line loop and then putting it over the rolled woven cloth, pulling the two ends of the traction line so that the traction line loop is tightly put on the rolled woven cloth; After the two rolls of woven cloth are squeezed close to each other and sewn into one roll, the two holes on the woven cloth for passing the traction line are located on the outermost layer of the woven cloth and at the top of the woven cloth sewn into one roll.

3. The method for fixing the end of an artificial ligament according to claim 2, characterized in that: Before the woven fabric is rolled up, the distance between the two holes on the woven fabric through which the traction wire is passed in the width direction of the woven fabric is 1 / 10 to 1 / 5 of the width of the woven fabric at that location.

4. The method for fixing the end of an artificial ligament according to claim 2, characterized in that: The S13 includes: The two rolls of woven cloth are squeezed together to form a roll shape, and then they are sewn toward the end of the woven part, and the sewing is stopped when it is a certain distance away from the hole on the woven cloth for the traction line to pass through; the traction line rope loop on the back of the woven cloth is passed through the rolled woven cloth to the top side of the rolled woven cloth, and then the traction line rope loop is twisted and then put over the rolled woven cloth; the remaining sewing is continued, wherein the woven cloth part corresponding to the end of the woven part is not sewn; finally, the two ends of the traction line are pulled so that the traction line rope loop is tightly put on the rolled woven cloth.

5. The method for fixing the end of an artificial ligament according to claim 1, characterized in that: The S1 includes: S11': rolling the two edges of the woven fabric in the width direction toward the middle respectively to form two rolls of woven fabric; S12': Winding the traction line around the two rolls of fabric, after winding, the middle of the traction line is placed horizontally on the top of the two rolls of fabric, and the two ends of the traction line extend to the bottom of the two rolls of fabric respectively and then wind back to the top of the two rolls of fabric; S13': insert a traction needle fixed at one end of the traction line into one of the rolls of woven fabric, and after the traction needle passes through several layers of woven fabric, move toward the end of the woven fabric until the traction line fixed thereto is brought out of the end of the woven fabric; insert another traction needle fixed at the other end of the traction line into another roll of woven fabric, and after the other traction needle passes through several layers of woven fabric, move toward the end of the woven fabric until the traction line fixed thereto is brought out of the end of the woven fabric; S14': the bottoms of the two rolls of fabric are connected by the fabric itself, the two rolls of fabric are pressed close to each other and the tops of the two rolls of fabric are sewn together to form one roll; S15': pulling the two ends of the pulling line to tighten the pulling line on the woven fabric formed into a roll after sewing; Among them, the two ends of the traction line cross each other when extending from the bottom of the two rolls of fabric and then wrap around the top of the two rolls of fabric, and no intersection is formed after wrapping around the top of the two rolls of fabric; the two traction needles respectively fixedly connected to the two ends of the traction line are respectively fixedly connected to the corresponding end of the traction line before S13'.

6. The method for fixing the end of an artificial ligament according to any one of claims 1 to 5, characterized in that: In the axial direction of the braided portion, the direction opposite to the end direction of the braided portion is the middle direction of the braided portion; the winding wire is divided into three sections, namely the first end of the winding wire, the middle of the winding wire and the second end of the winding wire; S2 includes: S21: placing the winding wire at the end of the braided portion; the placing method is that the first end of the winding wire extends toward the end of the braided portion, and the middle of the winding wire is wound around once, so that the second end of the winding wire extends toward the middle of the braided portion; S22: Using the middle part of the winding wire to bind the end of the braided portion, when winding, the middle part of the winding wire is wound from the part close to the second end of the winding wire, and the end of the braided portion is wound from the outermost end toward the middle part of the braided portion; S23: After the end of the braided portion is fully wound around the middle of the winding wire, the first end of the winding wire is pulled so that the winding wire is bound and tightened on the end of the braided portion.

7. The method for fixing the end of an artificial ligament according to any one of claims 1 to 5, characterized in that: In the axial direction of the braided portion, the direction opposite to the end direction of the braided portion is the middle direction of the braided portion; the S2 includes: S21': tying a knot at the outermost end of the braided portion with the winding wire to tighten it, the winding wire is divided into two sections from the knotted part, namely a first section and a second section, and the first section of the winding wire is placed on the braided portion in a manner of extending toward the middle of the braided portion; S22': Use the second section of the winding wire to bind the end of the braided portion. When winding, the second section of the winding wire starts from the part close to the knot of the winding wire, and starts from the outermost end on the end of the braided portion to the middle of the braided portion. When the second section of the winding wire is wound on the end of the braided portion, part of the auxiliary wire will be placed on the end of the braided portion and wound together. After the winding is completed, both ends of the auxiliary wire are not covered by the winding wire coil and extend toward the end of the braided portion. Part of the auxiliary wire is not covered by the winding wire coil in the middle direction of the braided portion, and the uncovered part forms an auxiliary wire rope bend. S23': the second section of the winding wire passes through the auxiliary wire bend after winding, and then the two ends of the auxiliary wire are pulled, and the second section of the winding wire passes through the gap between the winding wire coil and the braided portion through the auxiliary wire bend and then pulled out of the covering part of the winding wire coil; S24': Pull the second section of the winding wire from one end of the second section of the winding wire away from the knotting position, and tighten the second section of the winding wire so that it is bound and tightened on the end of the braided portion.

8. The method for fixing the end of an artificial ligament according to claim 7, characterized in that: The S22' comprises: S221': the second section of the winding wire starts to be wound around the end of the braided portion from the outermost end thereof, and stops winding after winding a certain distance; S222': placing the auxiliary wire on the end of the braided portion, the placement method is that the middle of the auxiliary wire is located on one side of the middle direction of the end of the braided portion, and the middle of the auxiliary wire is bent to form the auxiliary wire bend, and both ends of the auxiliary wire extend toward the end of the braided portion and extend to the winding wire coil area at this time or pass through and extend out of the winding wire coil area at this time; S223': the winding wire continues to be wound until the end of the braided portion is fully wound, and at this time, the auxiliary wire on the braided portion is wound together during the winding.

9. The method for fixing the end of an artificial ligament according to claim 7, characterized in that: In the axial direction of the braided portion, the length of the auxiliary wire together with the end portion of the braided portion wound by the winding wire accounts for 1 / 3 to 2 / 3 of the length of the end portion of the braided portion.

10. An artificial ligament, characterized in that: The end of the artificial ligament is made by the method for fixing the end of an artificial ligament as described in any one of claims 1 to 9.

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