Suture structure in medical surgery and manufacturing process

Abstract

To provide a suture structure in medical surgery and a manufacturing process.SOLUTION: Regarding a suture structure in medical surgery and a manufacturing process, the suture structure includes a thread end core yarn, a winding yarn and a suture connecting yarn. In the thread end core yarn, at least one core yarn is gathered to form a bundle, one end of the suture connecting yarn has a connecting segment, the connecting segment is provided so as to adhere to the thread end core yarn along a longitudinal direction of the thread end core yarn, the other end of the suture connecting yarn extends to be pulled out in an outside direction of the thread end core yarn at a central part position of the thread end core yarn, the winding yarn winds around, fastens and integrally absorbs to the thread end core yarn and the connecting segment along the longitudinal direction of the thread end core yarn to form a yarn rod, and a thermoplastic resin fiber material is used for all of the core yarn, the winding yarn and the suture connecting yarn.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] TECHNICAL FIELD This application relates to the medical supplies arts, and more particularly to suture structures and manufacturing processes for medical surgery. [Background technology]

[0002] In medical surgery, it is always necessary to use sutures to suture the tissue tear or surgical incision, and the superficial tissue can be sutured with one suture, but the deep tissue cannot be sutured with one suture through both sides of the tissue tear or surgical incision. For example, in spinal post-surgery, in the operation of herniated disc caused by the nucleus pulposus in the annulus fibrosus tissue protruding or protruding through a tear, how to suture the tissue tear or surgical incision after the decompression operation after removing the protruding nucleus pulposus is completed, which is a difficult technical problem to overcome. Since the location of the tissue tear or surgical incision is close to the spinal cord and nerves and there is no operating space, it is not possible to use a special suture needle to introduce a suture from one side of the wound and then pass it through the other side. In the conventional technology, the suture is completed using the X-close technique, but it is easy to cause tissue rejection and nerve compression due to the residual metal foreign body or PEEK material in the body, and it cannot be widely applied. Chinese patent application CN114699217A discloses a method of puncturing with two needles, moving two different sutures with a guide wire, and completing a safe suturing with an automatic knotting method. However, this prior art is limited in the operating space and can only be applied to a few surgical methods such as open and small fenestration. Summary of the Invention [Problem to be solved by the invention]

[0003] SUMMARY OF THE DISCLOSURE In order to improve the convenience and reduce the trauma to the human body for suturing tissue tears or surgical incisions in deep tissue surgery, the present application provides a suture structure and manufacturing process in medical surgery. [Means for solving the problem]

[0004] In a first aspect, the present application provides a method for producing a composition comprising: At least one core yarn is gathered into a bundle of yarn end core yarns; a suture connecting thread having a connecting segment attached to the thread end core thread along the length direction of the thread end core thread, and the other end extending toward the outside of the thread end core thread at the center position of the thread end core thread and pulled out; a wrapping yarn that wraps around the yarn end core yarn and the connection segment along the length direction of the yarn end core yarn, and fastens and adsorbs them together to form a yarn rod; The core thread, the wrapping thread and the suture connecting thread are all made of thermoplastic resin fiber material to provide a suture structure for medical surgery.

[0005] By adopting the above technical solution, the thread end core thread is composed of multiple core threads, and the wrapping thread is tightly wound around it under tension, the thread end core thread and the wrapping thread wound around it form a positioning structure with sufficient hardness and support strength, the suture connecting thread is integrally connected to the thread end core thread by being wound inside the thread end core thread at one end, and the other end of the suture connecting thread has sufficient flexibility to be used to penetrate human tissue to suture and knot the tissue tear or surgical incision. The suture connecting thread and the thread end core thread that penetrate the outside of the wrapping thread form a "T" shaped structure.

[0006] In a second aspect, the present application provides a method for producing a composition comprising: A step S1 of fixing the yarn end core yarn, in which a plurality of core yarns are arranged to be combined into a yarn end core yarn, both ends of the yarn end core yarn are fixed to a positioning jig, and the core yarn is tensioned; A step S2 of placing a suture connecting thread, which is to extend along the length of the thread end core thread and fix one end of the suture connecting thread at a position of a connecting segment to be attached to the thread end core thread, and extend and pull out the other end of the suture connecting thread from a central position of the thread end core thread toward the outside of the thread end core thread; a step S3 of weaving the wrapping yarn, in which one end of the wrapping yarn is tied to a yarn end core yarn or a positioning jig, and then the wrapping yarn is pulled spirally around the yarn end core yarn and the connecting segment, and the yarn end core yarn and the connecting segment are clamped and sucked together to form a yarn bar; and step S4 of removing both ends of the thread rod from the positioning jig and cutting off excess thread.

[0007] By adopting the above technical solution, a number of core threads are arranged and synthesized into a thread end core thread, so that the thread end core thread has sufficient diameter and support hardness, and the wrapping thread is woven after tensioning it with a positioning jig, and the wrapping thread is covered by the thread end core thread composed of the core thread, and the wrapping thread maintains a certain tensile force when winding, thereby ensuring that the wrapping thread has a certain covering force. In addition, the end of the suture structure has sufficient support hardness, can be stably locked inside the tissue to be operated on, and will not fall off after deformation. The suture connecting thread is wound around the thread end core thread by the wrapping thread, thereby realizing the fixation of the suture connecting thread and the thread end core thread, and this connection method is very stable, and does not tie at the center of the thread end core thread, ensuring that the diameter of the thread end core thread is uniform and consistent. Effect of the Invention

[0008] In summary, the present application includes at least one of the following beneficial technical effects: 1. The suture structure herein has a "T" shaped end, which eliminates the need for the suture to wrap around from one side of the wound to the other side of the lining of the tissue being sutured, making the surgical procedure easier. 2. The suture structure in this application uses pure thread material, which has no adverse effects or rejection on tissue healing. 3. The suture structure in this application uses a special knitting process to form the end stopper structure, which is integrally formed by knitting pure yarn, which has sufficient supporting hardness and strength, and does not need to use adhesives, which will not cause any harm to the human body, and is more healthy and hygienic. 4. The suture structure in this application is made by carefully selecting the materials, knitting method and size to ensure that the end core threads do not come undone, the overall structure is compact, the diameter of the end core threads is uniform, the connection is firm, and the suture structure has sufficient hardness, tensile strength and supporting strength. 5. Through technological application, it can break through the limitations of operating space and meet the requirements of various minimally invasive surgical methods and instruments, greatly expanding the scope of surgical indications, from the current 10% to more than 90%. [Brief description of the drawings]

[0009] [Figure 1] FIG. 2 is a schematic diagram of the three-dimensional structure of the suture structure in Example 1. [Diagram 2] FIG. 11 is a schematic diagram of the three-dimensional structure of the suture structure in Example 2. [Diagram 3] 13 is a schematic diagram of a three-dimensional structure of a positioning jig in Example 3. FIG. [Figure 4] 13 is a schematic diagram of a three-dimensional structure of a positioning jig in Example 6. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] The present application will be described in further detail below with reference to Figs.

[0011] Example 1 As shown in Fig. 1, the suture structure in medical surgery includes a core thread 11, a winding thread 200, and a suture connecting thread 300, and the suture connecting thread 300 includes a first braided thread 21 and a second braided thread 22 formed by folding one thread in half, and the core thread 11, the first braided thread 21, the second braided thread 22, and the suture connecting thread 300 are all made by weaving together a plurality of single threads. The single thread is a thermoplastic resin with high polarity or a thermoplastic resin with non-polarity, which has sufficient strength to ensure that it will not break during the winding process, and also has sufficient flexibility and a certain elasticity, and also has adsorption or viscosity, which can be wound tight during the winding process and ensures that the thread will be loosened when other operations are performed when the winding is paused, and at this time, the degree of slackness of the thread after winding is not large, and the loosened thread can be pulled again by pulling it again. For example, the single yarn can be made of polyethylene fiber material or polyester fiber material, and the single yarn made of polyethylene material has a certain adhesiveness and ultra-high tensile strength, which is harmless to the human body and comfortable after surgery. The number of single yarns used by the first braided yarn 21 and the second braided yarn 22 is less than the number of single yarns used by the suture connecting yarn 300, or the diameter of the single yarn used by the first braided yarn 21 and the second braided yarn 22 is smaller than the diameter of the single yarn used by the suture connecting yarn 300, that is, the diameters of the first braided yarn 21 and the second braided yarn 22 are both smaller than the diameter of the suture connecting yarn 300.

[0012] As shown in FIG. 1 , multiple core yarns 11 are arranged side by side and combined into a yarn end core yarn 100, and the multiple core yarns 11 may be formed by folding back a single yarn, and the final diameter of the yarn end core yarn 100 is much larger than the diameters of the first knitting yarn 21 and the second knitting yarn 22, and the diameter of the suture connecting yarn 300 is larger than the diameters of the first knitting yarn 21 and the second knitting yarn 22, and the diameter of the yarn end core yarn 100 may be larger than the diameter of the suture connecting yarn 300. The first knitting yarn 21 and the second knitting yarn 22 are both spirally wound from one end to the other end of the outer circumference of the yarn end core yarn 100, and the winding directions of the start points where the first knitting yarn 21 and the second knitting yarn 22 are wound around the yarn end core yarn 100 are opposite to each other, and the two yarns are pressed against each other alternately against the outer circumference surface of the yarn end core yarn 100, and the yarn ends of the first knitting yarn 21 and the second knitting yarn 22 are fastened at the end points where the first knitting yarn 21 and the second knitting yarn 22 are wound around the yarn end core yarn 100. An interfastening structure is provided for fastening the thread end core yarn 100, one end of the suture connecting thread 300 having a connection segment 31, the connection segment 31 being arranged along the length direction of the thread end core yarn 100, the first knitting yarn 21 and the second knitting yarn 22 winding the connection segment 31 around the thread end core yarn 100, and the other end of the suture connecting thread 300 passing through a gap between the first knitting yarn 21 and the second knitting yarn 22 at the central position of the thread end core yarn 100 and extending toward the outside of the thread end core yarn 100.

[0013] The first knitting yarn 21 and the second knitting yarn 22 are formed by folding the same yarn in half and then cutting the connecting end, so that the first knitting yarn 21 and the second knitting yarn 22 are easily tied at the starting point where they are wound around the yarn end core yarn 100, preventing the yarn ends of the first knitting yarn 21 and the second knitting yarn 22 from loosening and falling off, and preventing the first knitting yarn 21 and the second knitting yarn 22 from rotating when winding starts. At the starting point where they are wound around the yarn end core yarn 100, the first knitting yarn 21 and the second knitting yarn 22 are wound 5 to 8 times in opposite directions, so that they press against each other, preventing the first knitting yarn 21 and the second knitting yarn 22 from rotating around the yarn end core yarn 100 when they are wound, which is disadvantageous to manufacturing, and also preventing the yarn ends of both from loosening after one end where they are connected to the first knitting yarn 21 and the second knitting yarn 22 is cut. The first knitting yarn 21 and the second knitting yarn 22 are wound in the same direction until the end points of the first knitting yarn 21 and the second knitting yarn 22 are wound around the yarn end core yarn 100, and the first knitting yarn 21 and the second knitting yarn 22 are wound in the same direction, which makes them easy to handle and improves the processing efficiency of the suture structure. Of course, the first knitting yarn 21 and the second knitting yarn 22 may always be wound in opposite directions until the end points of the first knitting yarn 21 and the second knitting yarn 22 are wound around the yarn end core yarn 100.

[0014] The implementation principle is as follows: the thread end core thread 100 is composed of multiple core threads 11, the first braided thread 21 and the second braided thread 22 are tightly wound around it in a taut state, the thread end core thread 100 and the first braided thread 21 and the second braided thread 22 wound around it form a positioning structure with sufficient hardness and support strength, one end of the suture connecting thread 300 is wound inside the thread end core thread 100, thereby being integrally connected to the thread end core thread 100, and the other end of the suture connecting thread 300 has sufficient flexibility and is used to penetrate human tissue to suture the wound and tie it. The suture connecting thread 300 passing through the outside of the first braided yarn 21 and the second braided yarn 22 forms a "T" shaped structure with the thread end core thread 100, the thread end core thread 100 and the connecting segment 31 of the first braided yarn 21, the second braided yarn 22 and the suture connecting thread 300 are the upper horizontal part of the "T" shaped structure, the upper horizontal part of the "T" shaped structure has a certain hardness, which as a rod body plays a role of supporting and positioning in the suturing operation and prevents the suture structure from detaching from the suture tissue, the part of the suture connecting thread 300 that is not bound by the thread end core thread 100 is the lower vertical part of the "T" shaped structure, the lower vertical part of the "T" shaped structure has a certain flexibility, which as a connecting thread closes the wound after being tied to the suture structure on the outside of the suture tissue.

[0015] Taking suturing a wound on an annulus as an example, specifically, when using this suture structure, one end of the entire suture structure having the thread end core thread 100 is placed into a puncture needle, which is inserted into the inside of the annulus through the annulus tissue on one side of the wound, and then the push rod on the puncture needle is used to push one end of the thread end core thread 100 out of the puncture needle, and finally the puncture needle is removed, in this manner, the puncture needle can be used to transfer one end of the thread end core thread 100 into the annulus to be sutured, and due to the "T"-shaped structure of the thread end core thread 100, the end of the suture structure will not come off inside the annulus; similarly, a suture structure is embedded on the other side of the wound in the annulus, and the two suture structures are knotted on the outside of the annulus, thereby sticking the tissues on both sides of the wound together and maintaining fixation.

[0016] In the present application, a plurality of core yarns 11 are arranged side by side and combined into the yarn end core 100, and the sewing connecting yarn 300 is knitted and connected to the yarn end core 100 using the above structure, thereby ensuring that both ends of the yarn end core 100 do not come undone, the structure is compact, the diameter of the yarn end core 100 is uniform, and the connection between the sewing connecting yarn 300 and the yarn end core 100 is stable. In addition, the manufactured yarn end core yarn 100 has sufficient hardness and supporting strength, and it can be ensured that the suture connecting yarn 300 also has sufficient connection strength on the premise that it meets the flexibility requirements.

[0017] In the present application, the first knitting yarn 21 and the second knitting yarn 22 are tightly covered by the yarn end core yarn 100, and the gaps between the first knitting yarn 21 and the second knitting yarn 22 and the yarn end core yarn 100 in Figure 1 are merely for ease of display and explanation, and do not represent the actual product pattern.

[0018] Example 2 As shown in Fig. 2, this embodiment is almost the same as the embodiment 1, with the following differences: the suture connector 300 in this embodiment has an elastic loop 33 that forms a bow at the center of the thread end core thread 100. During surgery, the suture structure with elastic loop 33 is used together with the suture structure without elastic loop 33, and the suture connector 300 in the suture structure without elastic loop 33 passes through the elastic loop 33 in the other suture structure, and then the two suture connectors 300 are pulled, which can realize a self-tightening knot and ensure the tightening of the two sutures.

[0019] Example 3 This embodiment provides a manufacturing process for producing the suture structure in the above-mentioned embodiment 1, and the manufacturing process uses a positioning jig 400, and as shown in FIG. 3, the positioning jig 400 includes a support base plate 41 and two positioning posts 42 fixed at a distance from each other on the support base plate 41, and each of the two positioning posts 42 has a horizontal hook 43 on the opposing side, the hooks 43 on the two positioning posts 42 are arranged directly opposite each other, and each of the two positioning posts 42 has a horizontal rubber block 44 on the distant side, and a clamping groove 441 for clamping the thread is opened in the rubber block 44, and each of the two positioning posts 42 has a wing bolt 47 on its upper end.

[0020] The manufacturing process in this embodiment includes the following steps S0 to S4.

[0021] In S0, static electricity is removed from the core thread 11, the wrapping thread 200, and the suture connecting thread 300. For example, static electricity may be removed by blowing an ionized air current onto them using an ion fan.

[0022] In S1, the thread end core yarn 100 is fixed. A number of core yarns 11 are arranged and synthesized into the thread end core yarn 100, and both ends of the thread end core yarn 100 are fixed to the positioning jig 400, respectively, and the core yarn 11 is tensioned. The multiple core yarns 11 may be formed by fixing both ends of independent threads to two positioning posts 42, respectively, or by winding one thread or multiple threads back and forth around two opposing hooks 43. For example, after folding one thread in half, one end is hung on the hook 43 of one positioning post 42, and the two threads formed at the other end are wound back and forth around the two hooks 43, and after reaching the desired thread path, the end of the thread is clamped in the clamping groove 441 of the rubber block 44, and the deformation force of the rubber block 44 is used to clamp and fix the thread end. In this way, the core yarn 11 can be conveniently and quickly fixed to form the thread end core yarn 100, and the diameter of the thread end core yarn 100 can be easily adjusted.

[0023] In S2, the suture connecting thread 300 is placed. One end of the suture connecting thread 300 is fixed, and the other end is extended along the linear direction of the thread end core thread 100 to the center position of the thread end core thread 100 and adsorbed to the thread end core thread 100.

[0024] In S3, the first knitting yarn 21 and the second knitting yarn 22 are wound. A single yarn is tied to the yarn end core yarn 100 and folded in half to form the two parts, which are the first knitting yarn 21 and the second knitting yarn 22. The first knitting yarn 21 is spirally wound around the yarn end core yarn 100 in a clockwise direction, and the second knitting yarn 22 is spirally wound around the yarn end core yarn 100 in a counterclockwise direction. The first knitting yarn 21 and the second knitting yarn 22 press against each other alternately on the outer circumferential surface of the yarn end core yarn 100. When the first knitting yarn 21 and the second knitting yarn 22 are spirally wound to the end position of the yarn end core yarn 100, the sewing connecting yarn 3 When the first knitting yarn 21 and the second knitting yarn 22 are spirally wound in the opposite directions to the center position of the yarn end core yarn 100, the sewing connecting yarn 300 extends outward from the gap between the first knitting yarn 21 and the second knitting yarn 22 to the outside of the first knitting yarn 21 and the second knitting yarn 22, and the first knitting yarn 21 and the second knitting yarn 22 are continuously spirally wound to the starting position. Then, depending on the diameter of both sides of the center position of the yarn end core yarn 100, the sewing connecting yarn 300 is wound on one side of the center of the yarn end core yarn 100. When it is determined whether or not to continue to weave the yarn end core thread 100, and the diameters of both sides of the yarn end core thread 100 are equal or close to each other, the yarn ends of the first knitting yarn 21 and the second knitting yarn 22 are fastened to each other, and when the first knitting yarn 21 and the second knitting yarn 22 are wound and tied to the end position, first, after leaving one loop, the first knitting yarn 21 is linearly extended along the length direction of the yarn end core thread 100, and the loop is temporarily fitted into the butterfly bolt 47 so as not to come undone, and then the second knitting yarn 22 is wrapped around the yarn end core thread and the first knitting yarn by a covering layer of 1 mm to 1.5 mm in distance. After winding, the first knitting yarn 21 is turned back and passed through the loop, and finally, the first knitting yarn 21 is pulled to shrink the loop and the second knitting yarn is pulled into the covering layer at a distance of 1 mm to 1.5 mm, thereby realizing the mutual fastening of the first knitting yarn 21 and the second knitting yarn 22. In this way, it is easy to realize the mutual fastening of the first knitting yarn 21 and the second knitting yarn 22, and also ensures that no large knot protrusions are left on the yarn end core yarn 100 and that the wound yarn does not loosen after the first knitting yarn 21 and the second knitting yarn 22 are cut. The suture connecting yarn 300 and the yarn end core yarn 100 that penetrate the outside of the first knitting yarn 21 and the second knitting yarn 22 form a "T" shaped structure.The thread end core thread 100 and the associated first braided thread 21, second braided thread 22, and connecting segment 31 of the suture connecting thread 300 are the upper horizontal part of the "T" shaped structure, the upper horizontal part of the "T" shaped structure has a certain hardness, which as a rod body plays a role in supporting and positioning in the suturing operation and prevents the suture structure from coming off the suture tissue, and the part of the suture connecting thread 300 that is not bound by the thread end core thread 100 is the lower vertical part of the "T" shaped structure, which has a certain flexibility, which as a connecting thread closes the tissue tear or surgical incision after being tied to the suture structure outside the suture tissue.

[0025] In S4, both ends of the yarn end core yarn 100 are removed from the positioning jig 400 and the excess yarn is cut off according to the required length, and in this process, care should be taken to leave associated structures at both ends of the first knitting yarn 21 and the second knitting yarn 22 that have the function of clamping the yarn ends.

[0026] In this embodiment, the diameter of the suture connecting thread 300 is larger than the diameter of the first knitting thread 21 and the diameter of the second knitting thread 22, and the end of the suture connecting thread 300 is tied to one end of the thread end core thread 100, and the specific position is determined by the length of the head stopper structure required for the suture. The main role of the first knitting yarn 21 and the second knitting yarn 22 is to tie the thread end core thread 100 into a rod body with a certain hardness, and they are also used to wind one end of the suture connecting thread 300 around the thread end core thread 100 to tie and connect it. Therefore, the first knitting yarn 21 and the second knitting yarn 22 can be made of thin yarn. In this way, the diameter of the first knitting yarn 21 and the diameter of the second knitting yarn 22 are small and do not leave a large protrusion on the thread end core thread 100 when tied. The suture connecting thread 300 needs to close the tissues on both sides of the wound and is subjected to a certain tensile force, so a thick thread is used to ensure its connection strength. By using the above-mentioned special connection structure, the suture connecting thread 300 does not leave a large protrusion on the thread end core thread 100.

[0027] Furthermore, in the above step S3, first, one thread is folded in half, and then tied to one end of the thread end core thread 100 composed of multiple core threads 11. The first knitting thread 21 and the second knitting thread 22 are spirally wound around the thread end core thread 100 alternately in opposite directions. After the first knitting thread 21 and the second knitting thread 22 are both wound 5 to 8 times, the first knitting thread 21 and the second knitting thread 22 are further wound in the same direction to the end position where the first knitting thread 21 and the second knitting thread 22 are wound. By winding the first knitting thread 21 and the second knitting thread 22 in the opposite direction 5 to 8 times, rotation and loosening of the thread ends during the winding process of both threads can be effectively prevented. At this time, it is easy to operate to wind the first knitting thread 21 and the second knitting thread 22 in the same direction, thereby improving the processing efficiency of the suture thread structure.

[0028] The implementation principle is as follows: By arranging a plurality of core threads 11 and synthesizing them into a thread end core thread 100, the thread end core thread 100 has sufficient diameter and support hardness, and the positioning jig 400 winds the first knitting thread 21 and the second knitting thread 22 after tensioning it, and covers the thread end core thread 100 composed of the core thread 11 with the first knitting thread 21 and the second knitting thread 22, and keeps the first knitting thread 21 and the second knitting thread 22 to have a certain tensile force when winding them, thereby ensuring that the first knitting thread 21 and the second knitting thread 22 have a certain covering force. In addition, it is ensured that the end of the suture structure has sufficient support hardness, can be stably locked inside the surgical target tissue, and does not fall off after deformation. The suture connecting thread 300 is wound around the thread end core thread 100 by the first knitting thread 21 and the second knitting thread 22, thereby realizing the fixation of the suture connecting thread 300 and the thread end core thread 100. This connection method is very stable and does not require knotting in the middle of the thread end core thread 100, ensuring the uniformity and consistency of the diameter of the thread end core thread 100.

[0029] Example 4 This embodiment is similar to the third embodiment, with the following differences: the ends of the connection segments 31 of the suture connector thread 300 in this embodiment may be directly attached to the positioning jig 400; Both ends of the suture connecting thread 300 are fixed by winding them around the hooks 43 of the two positioning posts 42, or by winding the suture connecting thread 300 two to three times into the clamping groove 441 of the rubber block 44, and then attached to the thread end core thread 100 to keep the length directions of both the suture connecting thread 300 and the thread end core thread 100 consistent. Then, when the first knitting thread 21 and the second knitting thread 22 are wound around the center of the thread end core thread 100, the end of the suture connecting thread 300 away from the connection segment 31 is loosened, the suture connecting thread 300 is detached from the thread end core 100, and the suture connecting thread 300 continues to be wound around the thread end core thread 100 until the first knitting thread 21 and the second knitting thread 22 are finished, and the suture connecting thread 300 is passed between the first knitting thread 21 and the second knitting thread 22, finally forming a "T" shaped structure.

[0030] Example 5 As shown in Fig. 2, this embodiment is almost the same as the embodiment 3 or 4, but the differences are as follows: In this embodiment, when the first knitting yarn 21 and the second knitting yarn 22 are spirally wound in the opposite directions to the center position in step S3, the seam connecting thread 300 extends outward from the gap between the first knitting yarn 21 and the second knitting yarn 22 to the outside of the first knitting yarn 21 and the second knitting yarn 22, and the first knitting yarn 21 and the second knitting yarn 22 are continuously spirally wound one to three times, after which the seam connecting thread 300 is again attracted to the yarn end core thread 100, and the first knitting yarn 21 and the second knitting yarn 22 are wound in a spiral manner. The suture connecting thread 300 is spirally wound around the thread end core thread 100 for one to three times, and the suture connecting thread 300 forms a wrap 32 on the outside of the first knitting thread 21 and the second knitting thread 22. The suture connecting thread 300 is then extended again to the outside of the first knitting thread 21 and the second knitting thread 22, and the suture connecting thread 300 is folded back and passed through the wrap 32 to form an elastic loop 33. Finally, the suture structure with the elastic loop 33 in Example 2 above is formed.

[0031] In every suturing operation, the suture structure with the elastic loop 33 can be combined with a suture structure without the elastic loop 33 to form a set of sutures, and the suture connector thread 300 in the suture structure without the elastic loop 33 can be passed through the elastic loop 33 in the other suture structure, and then the two suture connector threads 300 can be pulled to realize a self-tightening knot and ensure the tightening of the two threads, which is very convenient.

[0032] Example 6 As shown in FIG. 4, this embodiment is almost the same as embodiment 3, embodiment 4 or embodiment 5, but the differences are as follows: In this embodiment, a mounting post 45 is fixed on the side of one positioning post 42 on the support base plate 41, and an alloy wire post 46 is provided on the upper end of the mounting post 45; in the above step S3, when the first braiding yarn 21 and the second braiding yarn 22 are braided to tighten the yarn ends, the loop left in the first braiding yarn 21 is fitted into the alloy wire post 46, and after the second braiding yarn 22 passes through the loop, the first braiding yarn 21 is pulled to separate the loop from the alloy wire post 46; or, when the expandable loop 33 in embodiment 5 is braided, the wrap 32 formed on the sewing connector thread 300 is fitted into the alloy wire post 46, and after the sewing connector thread 300 is passed through the wrap 32, the wrap 32 is separated from the alloy wire post 46. The alloy wire post 46 can be used to assist in pulling the loop or wrap, effectively avoiding the occurrence of phenomena such as loosening and shrinkage.

[0033] The alloy wire post 46 not only has sufficient supporting strength, but also has a certain toughness. After the loop or wrap 32 is fitted into the alloy wire post 46, an external force can be applied to bend the alloy wire post 46 and stretch the thread end core thread 100, so as to adjust the size of the loop or wrap 32. In addition, the loop or wrap 32 can easily slide out of the alloy wire post 46 at the end, which is very convenient.

[0034] The examples of the specific embodiments are all preferred embodiments of the present application and do not limit the scope of protection of the present application, in which the same parts are given the same reference numerals, so that any equivalent changes made based on the structure, shape and principle of the present application should be included within the scope of protection of the present application. [Explanation of symbols]

[0035] 100...yarn end core thread, 11...core thread, 200...winding thread, 21...first knitting thread, 22...second knitting thread, 300...suture connecting thread, 31...connecting segment, 32...wrap, 33...elastic loop, 400...positioning jig, 41...support base plate, 42...positioning post, 43...hook, 44...rubber block, 441...clamping groove, 45...mounting post, 46...alloy wire post, 47...wing bolt.

Claims

1. A yarn end core yarn (100) in which at least one core yarn (11) is gathered into a bundle; a suture connecting thread (300) having one end having a connecting segment (31) attached to the thread end core thread (100) along the length direction of the thread end core thread (100), and the other end extending toward the outside of the thread end core thread (100) at the central position of the thread end core thread (100) and pulled out; a wrapping thread (200) that wraps around the thread end core thread (100) and the connection segment (31) along the length direction of the thread end core thread (100), tightens them together, and adsorbs them to form a thread bar; The suture structure for medical surgery is characterized in that the core thread (11), the wrapping thread (200) and the suture connecting thread (300) are all made of thermoplastic resin fiber material.

2. The wrapping yarn (200) includes a first knitting yarn (21) and a second knitting yarn (22), and the first knitting yarn (21) and the second knitting yarn (22) are both spirally wound from one end to the other end of the outer circumference of the yarn end core yarn (100), or the first knitting yarn (21) and the second knitting yarn (22) are both spirally wound from the center of the yarn end core yarn (100) to the end of the yarn end core yarn (100), and the first knitting yarn (21) and the second knitting yarn (22) are both spirally wound from the center of the yarn end core yarn (100) to the end of the yarn end core yarn (100). The yarn (21) and the second knitting yarn (22) are wound around the yarn end core yarn (100) in opposite winding directions at the start points, and the two yarns are pressed against each other alternately against the outer circumferential surface of the yarn end core yarn (100). At the end points where the first knitting yarn (21) and the second knitting yarn (22) are wound around the yarn end core yarn (100), knots are formed to fasten the yarn ends of the first knitting yarn (21) and the second knitting yarn (22).

2. The suture structure for medical surgery according to claim 1, wherein the suture connector thread (300) has an elastic loop (33) that forms a bow at a central position of the thread end core thread (100).

3. A process for manufacturing a suture structure according to claim 1 or 2, comprising the steps of: A step S1 of fixing the yarn end core yarn (100), in which a plurality of core yarns (11) are arranged to be combined into the yarn end core yarn (100), both ends of the yarn end core yarn (100) are fixed to a positioning jig (400), and the core yarn (11) is tensioned; Step S2 of placing the suture connecting thread (300), which includes extending the suture connecting thread (300) along the length of the thread end core thread (100) and fixing one end of the suture connecting thread (300) at the location of the connection segment (31) attached to the thread end core thread (100), and drawing out the other end of the suture connecting thread (300) by extending it from the center position of the thread end core thread (100) toward the outside of the thread end core thread (100); Step S3 of weaving the wrapping yarn (200), in which one end of the wrapping yarn (200) is tied to the yarn end core yarn (100) or the positioning jig (400), and then the wrapping yarn (200) is spirally pulled and wound around the yarn end core yarn (100) and the connecting segment (31) to weave, and the yarn end core yarn (100) and the connecting segment (31) are clamped and sucked together to form a yarn bar; and step S4 of removing both ends of the yarn rod from the positioning jig (400) and cutting off excess yarn. The positioning jig (400) includes a base plate (41) and two positioning posts (42) fixed to the support base plate (41) at a distance from each other, and a horizontal hook (43) is provided on each of the central or upper opposing sides of the two positioning posts (42), and a horizontal rubber block (44) is provided on each of the distant sides of the two positioning posts (42), and a clamping groove (441) for clamping a thread is opened in the rubber block (44). The hooks (43) of the two positioning posts (42) are provided opposite each other, and the support The manufacturing process of the suture structure described in claim 1 or 2, characterized in that an attachment post (45) is fixed to the base plate (41) on the side located at one of the positioning posts (42), and an alloy wire post (46) is provided at the upper end of the attachment post (45), and in step S1, multiple core threads (11) are formed by winding one thread or multiple threads back and forth around the two opposing hooks (43), and in step S2, the suture connecting thread (300) is fixed by winding it several times in the clamping groove (441) of the rubber block (44).

4. The winding yarn (200) includes a first knitting yarn (21) and a second knitting yarn (22). Prior to step S1, the core yarn (11), the winding yarn (200) and the sewing connecting yarn (300) are all subjected to a static electricity removal treatment. In step S3, one end of the first knitting yarn (21) and the second knitting yarn (22) is tied to the yarn end core yarn (100) or a positioning jig (400), and then the other end of the first knitting yarn (21) is tied to the yarn end core yarn (100) in a clockwise direction. ), and the other end of the second knitting yarn (22) is spirally wound around the yarn end core yarn (100) and the connection segment (31) in a counterclockwise direction, and the first knitting yarn (21) and the second knitting yarn (22) are pressed against each other alternately in sequence and wound around the outer peripheral surfaces of the yarn end core yarn (100) and the connection segment (31) multiple times, and then the first knitting yarn (21) and the second knitting yarn (22) are wound around the yarn end core yarn (100), When the first knitting yarn (21) and the second knitting yarn (22) are spirally wound in the same or different directions on the outer peripheral surface of the connection segment (31) to the end position of the yarn end core yarn (100), the connection segment (31) is folded back and fixed to the initial fixed end, and the first knitting yarn (21) and the second knitting yarn (22) are wound in the opposite directions to the yarn end core yarn (100), and the yarn end core yarn (100) is wound around the folded back segment of the connection segment (31). a second end of the suture connecting thread (300) extending outward from the first braided thread (21) and the second braided thread (22) through a gap between the first braided thread (21) and the second braided thread (22) after the first braided thread (21) and the second braided thread (22) are wound spirally to a central position, and then, when the first braided thread (21) and the second braided thread (22) are wound to a final position, the thread ends of the first braided thread (21) and the second braided thread (22) are clamped together.

5. A manufacturing process for a suture structure as described in claim 4, characterized in that in step S3, after continuing to spirally wind the first knitting yarn (21) and the second knitting yarn (22) from the central position to the starting position, it is determined whether or not to continue winding on one side of the central portion of the thread end core thread (100) depending on the diameter of both sides of the central position of the thread end core thread (100), and when the diameters on both sides of the thread end core thread (100) are equal or similar, the first knitting yarn (21) and the second knitting yarn (22) are wound to a final position and the thread ends of the first knitting yarn (21) and the second knitting yarn (22) are clamped to each other.

6. The manufacturing process for a suture structure as described in claim 3, characterized in that in the step S2, the diameter of the suture connecting thread (300) is larger than the diameter of the first knitting thread (21) and the diameter of the second knitting thread (22), and the end of the suture connecting thread (300) is fixed to the positioning jig (400) or tied to the position of one end of the thread end core thread (100).

7. 4. The manufacturing process for a suture structure according to claim 3, characterized in that in step S3, first, a single thread is folded in half and then tied to one end of a thread end core thread (100) composed of multiple core threads (11), and the two parts of the single thread folded in half are respectively a first knitting thread (21) and a second knitting thread (22), and the first knitting thread (21) and the second knitting thread (22) are alternately spirally wound around the thread end core thread (100) in opposite directions, and after both the first knitting thread (21) and the second knitting thread (22) are wound multiple times, the first knitting thread (21) and the second knitting thread (22) are further wound in the same direction to the end position of the winding of the first knitting thread (21) and the second knitting thread (22).

8. In the above step S3, when the first knitting yarn (21) and the second knitting yarn (22) are wound to the end position, first, the first knitting yarn (21) is linearly extended along the length direction of the yarn end core yarn (100) after leaving one loop, then the second knitting yarn (22) is wound around the yarn end core yarn (100) and the first knitting yarn (21) with a covering layer of 1 mm to 1.5 mm and then passed back through the loop, and finally the first knitting yarn (21) is pulled to reduce the loop and the second knitting yarn (22) is pulled into the covering layer of 1 mm to 1.5 mm, thereby realizing mutual fastening of the first knitting yarn (21) and the second knitting yarn (22); The manufacturing process for a suture structure as described in claim 3, characterized in that in the above step S3, when the first braiding yarn (21) and the second braiding yarn (22) are braided to tighten the thread end, the loop remaining in the first braiding yarn (21) is fitted into the alloy wire post (46), and after the second braiding yarn (22) passes through the loop, the first braiding yarn (21) is pulled, causing the loop to detach from the alloy wire post (46), and the alloy wire post (46) can be bent and extended to the thread end core thread (100).

9. In the above step S3, when the first knitting yarn (21) and the second knitting yarn (22) are spirally wound in opposite directions to the central position, the sewing connecting thread (300) extends outward from the gap between the first knitting yarn (21) and the second knitting yarn (22) to the outside of the first knitting yarn (21) and the second knitting yarn (22). After the first knitting yarn (21) and the second knitting yarn (22) are continuously spirally wound for a plurality of turns, the sewing connecting thread (300) is again attracted to the yarn end core thread (100) and the first knitting yarn (21) and the second knitting yarn (22) are again attracted to the yarn end core thread (100).

4. The process for manufacturing a suture structure according to claim 3, further comprising: continuing to spirally wrap the suture connecting thread (300) around the thread end core thread (100) for a number of times so that the suture connecting thread (300) forms a wrap (32) on the outside of the first braided thread (21) and the second braided thread (22); and then extending the suture connecting thread (300) again outside the first braided thread (21) and the second braided thread (22), folding the suture connecting thread (300) back and passing it through the wrap (32) to form an elastic loop (33).

10. 10. The method for manufacturing a suture structure according to claim 9, characterized in that an attachment post (45) is fixed to one side of one of the positioning posts (42) on the supporting base plate (41), and an alloy wire post (46) is provided at the upper end of the attachment post (45); in step S3, when knitting the elastic loop (33), the lap (32) formed by the suture connecting thread (300) is fitted onto the alloy wire post (46), and after the suture connecting thread (300) passes through the lap (32), the lap (32) is detached from the alloy wire post (46).

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