A pelvic floor mesh and method of weaving the same

Abstract

The application discloses a pelvic floor patch and a weaving method thereof, and belongs to the technical field of medical products. The structure of the pelvic floor patch is a mesh structure woven by polypropylene monofilament as weaving yarn, and the pattern cycle is eight wefts. The pelvic floor patch provided by the application is woven by polypropylene monofilament through warp knitting technology, and the patch is light in weight and better in softness, and meets the requirements of pelvic floor repair and reconstruction. The mesh size of the pelvic floor patch is appropriate, the porosity of the patch is improved, the human tissue growth recovery is more favorable, the foreign body sensation after operation is reduced, the infection risk is reduced, and the comfort of patients is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of medical products, and particularly relates to a pelvic floor patch and a weaving method thereof. BACKGROUND

[0002] Pelvic floor dysfunction (PFD) refers to a series of diseases caused by damage or degeneration of pelvic support structures such as pelvic floor muscle groups and ligaments, resulting in displacement and dysfunction of pelvic organs. Its main manifestations are pelvic organ prolapse (POP), stress urinary incontinence (SUI), fecal incontinence, sexual dysfunction, etc. At present, PFD has become one of the most common chronic diseases affecting women's health and quality of life. The pathogenesis of PFD is closely related to the anatomical structure of the female pelvis. Hormone secretion, pregnancy, childbirth, aging, constipation, obesity and many other factors can cause the disease, and the most common clinical manifestations are POP and SUI.

[0003] At present, severe PDF requires surgical treatment. Traditional surgical methods such as transvaginal hysterectomy and Manchester operation are mainly based on "resection-repair", which has certain limitations and is not suitable for patients with sexual and reproductive needs, and cannot fundamentally restore the pelvic anatomy. The postoperative symptom relief effect gradually weakens, and the recurrence rate is high. With the continuous in-depth research of scholars on the anatomy of the pelvic floor, the "three-chamber, three-level" theory, the hammock hypothesis and the pelvic floor whole theory have promoted many surgical treatment methods for the front, middle and back chambers and the whole pelvic cavity. Pelvic floor repair and reconstruction surgery by implanting patches or sling materials has also emerged.

[0004] In recent years, with the continuous improvement of modern pelvic floor theory and the rapid development of patch-related material science, the application and research of patches in the field of pelvic floor repair and reconstruction have become increasingly important. The current principles of pelvic floor repair and reconstruction surgery mainly follow the "3R" principle: to restore and maintain the anatomical structure (retain), to repair and reinforce the defective tissue (repair), and to reasonably apply replacement materials (replacement). According to the characteristics of the pelvic floor structure and function, Ridder proposed in his research in the early 21st century that the implanted repair and reconstruction materials should have the following characteristics in the ideal state: ① minimal rejection reaction; ② flexible and elastic; ③ easy to suture; ④ good biocompatibility; ⑤ allow collagen fibers to grow in; ⑥ permanently repair the tissue; ⑦ good tension; ⑧ less likely to cause infection; ⑨ fewer complications.

[0005] Compared with the traditional operation, the implantation of the patch type pelvic floor repair and reconstruction operation is more beneficial to the recovery and maintenance of the pelvic floor anatomical structure. The pelvic patch can replace the damaged tissue of the pelvic floor and promote tissue regeneration, and promote the recovery of the function of the pelvic floor organs.

[0006] The pelvic floor patch in the prior art is heavy and has poor softness. Meanwhile, the mesh size of the pelvic patch is not appropriate. Too large or too small mesh size is not conducive to the recovery of human tissue growth. After the operation, the foreign body sensation is strong, which increases the risk of infection and reduces the comfort of the patient. SUMMARY

[0007] In order to solve the above problems, the technical scheme adopted by the present application is as follows:

[0008] A pelvic floor patch, the structure of the pelvic floor patch is a mesh structure woven by polypropylene monofilament as a woven yarn, and the pattern cycle is eight rows.

[0009] Further, the mesh is approximately a quadrilateral shape of a rhombus.

[0010] Further, the density of the mesh is 1.5 / cm to 3 / cm.

[0011] Further, the unit area weight of the pelvic floor patch is 25g / m 2 to 55g / m 2 , the thickness is 0.25mm to 0.5mm, the porosity is 80% to 90%, and the bursting strength is 75N to 150N.

[0012] The weaving method of the pelvic floor patch according to any one of the above, uses polypropylene monofilament as the weaving yarn, and adopts the warp knitting weaving technology to weave;

[0013] Four guide bars are used for weaving, and the pattern cycle is eight rows;

[0014] The first guide bar weaves back and forth on one needle to form a chain stitch structure;

[0015] The second guide bar and the third guide bar both use chain stitch padding combined with warp pile padding, and weave back and forth on three needles. The second guide bar and the third guide bar cooperate with each other to form a quadrilateral mesh structure of a rhombus shape;

[0016] The fourth guide bar is a weft insertion guide bar.

[0017] Further, polypropylene monofilament with a diameter of 0.08mm to 0.2mm is selected as the weaving yarn, four guide bars are used for weaving on a four-guide raschel warp knitting machine, and the pattern cycle is eight rows;

[0018] The first guide bar weaves back and forth on one needle to form a closed chain stitch structure;

[0019] The second and third guide bars adopt chain filling and warp pile filling, and the second and third guide bars cooperate to form a quadrilateral mesh structure similar to a rhombus.

[0020] The fourth guide bar is changed to a five-needle pitch weft.

[0021] Further,

[0022] The filling number of the first guide bar is (1-0 / 0-1) x 4 / / , the filling number of the second guide bar is 1-0 / 2-3 / 3-2 / 3-2 / 4-5 / 3-2 / 2-3 / 2-3 / / , the filling number of the third guide bar is 4-5 / 3-2 / 2-3 / 2-3 / 1-0 / 2-3 / 3-2 / 3-2 / / , and the filling number of the fourth guide bar is (0-0 / 5-5) x 4 / / .

[0023] Further, polypropylene monofilament with a diameter of 0.08mm-0.2mm is selected as the weaving yarn, and four guide bars are used for weaving on a four-guide bar warp knitting machine, and the pattern cycle is eight wefts.

[0024] The first guide bar is back and forth on one needle to form an open chain structure.

[0025] The second and third guide bars adopt chain filling and warp pile filling, and the second and third guide bars cooperate to form a quadrilateral mesh structure similar to a rhombus.

[0026] The fourth guide bar is changed to a five-needle pitch weft.

[0027] Further,

[0028] The filling number of the first guide bar is (1-0 / 0-1) x 4 / / , the filling number of the second guide bar is 1-0 / 2-3 / 3-2 / 3-2 / 4-5 / 3-2 / 2-3 / 2-3 / / , the filling number of the third guide bar is 4-5 / 3-2 / 2-3 / 2-3 / 1-0 / 2-3 / 3-2 / 3-2 / / , and the filling number of the fourth guide bar is (0-0 / 5-5) x 4 / / .

[0029] The beneficial effects of the present application are:

[0030] The pelvic floor patch provided by the present application is woven by a warp knitting process using polypropylene monofilament, and the patch is light in weight and better in softness, and meets the requirements of pelvic floor repair and reconstruction.

[0031] The appropriate mesh size of the pelvic floor patch increases the porosity of the patch, which is more conducive to the growth and recovery of human tissue, reduces the feeling of a foreign body after surgery, reduces the risk of infection, and improves patient comfort. Attached Figure Description

[0032] Figure 1 This is the yarn padding motion diagram corresponding to Embodiment 3 of the present invention;

[0033] Figure 2 This is the yarn padding motion diagram corresponding to Embodiment 4 of the present invention. Detailed Implementation

[0034] This invention provides a basin bottom patch and its weaving method. The technical solution of this invention will be described in detail below with reference to the accompanying drawings to make it easier to understand and master.

[0035] Example 1

[0036] A type of basin bottom patch, wherein the structure of the basin bottom patch is a mesh structure woven from polypropylene monofilaments as braiding yarn, and the pattern repeats in eight horizontal rows.

[0037] In this embodiment, the mesh is a quadrilateral shape that is approximately rhomboid.

[0038] In this embodiment, the mesh density is 1.5 meshes / cm to 3 meshes / cm.

[0039] In this embodiment, the weight per unit area of ​​the pelvic floor patch is 25 g / m². 2 ~55g / m 2 The thickness is 0.25mm to 0.5mm, the porosity is 80% to 90%, and the bursting strength is 75N to 150N.

[0040] Example 2

[0041] This embodiment is the weaving method of the basin bottom patch provided in Example 1. Polypropylene monofilaments with a diameter of 0.08mm to 0.2mm are selected as the weaving yarn, and the weaving is carried out using the warp knitting technique.

[0042] The pattern is woven using four combs, with eight horizontal rows repeating the pattern.

[0043] The first comb moves back and forth on a knitting needle to pad the yarn and form a chain structure;

[0044] The second and third combs both use a combination of chain-link padding yarn and warp padding yarn, padding yarn back and forth on the three needles. The second and third combs work together to form a quadrilateral mesh structure that is approximately rhomboid.

[0045] The fourth comb is a weft-insulated comb.

[0046] Example 3

[0047] This embodiment is a further improvement on the weaving method of the pelvic floor patch provided in Example 2.

[0048] In this embodiment, polypropylene monofilament with a diameter of 0.1 mm is selected as the weaving yarn. On a four-comb Raschel warp knitting machine, four combs are used for weaving, and the pattern cycle consists of eight horizontal rows.

[0049] The first comb moves back and forth on a knitting needle to pad the yarn and form a closed chain structure;

[0050] The second and third combs both use a combination of chain-link padding yarn and warp padding yarn, padding yarn back and forth on the three needles. The second and third combs work together to form a quadrilateral mesh structure that is approximately rhomboid.

[0051] The fourth comb is used to vary the needle spacing for weft insertion.

[0052] The specific digital method for padding yarn in the weaving technique provided in this embodiment is as follows:

[0053] The padding yarn number for the first comb is: (1-0 / 1-0)×4 / / , one empty and one threaded;

[0054] The yarn padding number for the second comb is:

[0055] 1-0 / 2-3 / 2-3 / 2-3 / 4-5 / 3-2 / 3-2 / 3-2 / / , two empty spaces, one through, one empty space;

[0056] The yarn padding number for the third comb is:

[0057] 4-5 / 3-2 / 3-2 / 3-2 / 1-0 / 2-3 / 2-3 / 2-3 / / , one empty space, one through, two empty spaces;

[0058] The padding yarn number of the fourth comb is: (5-5 / 0-0 / 1-1 / 0-0)×2 / / , one thread and one empty.

[0059] For the yarn padding motion diagram corresponding to the yarn padding numbers in this weaving method, please refer to [link / reference]. Figure 1 .

[0060] Example 4

[0061] This embodiment is a further improvement on the weaving method of the pelvic floor patch provided in Example 2.

[0062] In this embodiment, polypropylene monofilament with a diameter of 0.1 mm is selected as the weaving yarn. On a four-comb Raschel warp knitting machine, four combs are used for weaving, and the pattern cycle consists of eight horizontal rows.

[0063] The first comb moves back and forth on a knitting needle to pad the yarn, forming an open chain structure;

[0064] The second and third combs both use a combination of chain-link padding yarn and warp padding yarn, padding yarn back and forth on the three needles. The second and third combs work together to form a quadrilateral mesh structure that is approximately rhomboid.

[0065] The fourth comb is made with a five-needle spacing weft.

[0066] The specific digital method for padding yarn in the weaving technique provided in this embodiment is as follows:

[0067] The padding yarn number for the first comb is: (1-0 / 0-1)×4 / / , one empty and one threaded;

[0068] The yarn padding number for the second comb is:

[0069] 1-0 / 2-3 / 3-2 / 3-2 / 4-5 / 3-2 / 2-3 / 2-3 / / , two empty spaces, one through, one empty space;

[0070] The yarn padding number for the third comb is:

[0071] 4-5 / 3-2 / 2-3 / 2-3 / 1-0 / 2-3 / 3-2 / 3-2 / / , one empty space, one through, two empty spaces;

[0072] The padding yarn number of the fourth comb is: (0-0 / 5-5)×4 / / , one thread and one empty.

[0073] For the yarn padding motion diagram corresponding to the yarn padding numbers in this weaving method, please refer to [link / reference]. Figure 2 .

[0074] The technical solutions of the present invention have been fully described above. It should be noted that the specific embodiments of the present invention are not limited to the above description. All technical solutions formed by those skilled in the art based on the spirit and essence of the present invention by adopting equivalent transformations or equivalent transformations in terms of structure, method or function fall within the protection scope of the present invention.

Claims

1. A method of weaving a pelvic floor patch, characterized by, The diameter of the polypropylene monofilament is 0.08mm-0.2mm, which is used as the weaving yarn, four combing bars are used for weaving on the four-comb raschel warp knitting machine, and the pattern cycle is eight wefts; The first combing bar is padded back and forth on one needle to form the closed chain structure; The second combing bar and the third combing bar are padded back and forth on three needles by combining the chain padding and the warp pile padding, and the second combing bar and the third combing bar are matched to form the quadrilateral mesh structure similar to the rhombus; The fourth combing bar is changed to the five-pitch weft insertion; The unit area weight of the pelvic floor patch is 25 g / m 2 ~ 55 g / m 2 , the thickness is 0.25 mm~0.5 mm, the porosity is 80%~90%, and the burst strength is 75 N~150 N.

2. The method of claim 1, wherein, The padding code of the first combing bar is (1-0 / 0-1)×4 / / , the padding code of the second combing bar is 1-0 / 2-3 / 3-2 / 3-2 / 4-5 / 3-2 / 2-3 / 2-3 / / , the padding code of the third combing bar is 4-5 / 3-2 / 2-3 / 2-3 / 1-0 / 2-3 / 3-2 / 3-2 / / , and the padding code of the fourth combing bar is (0-0 / 5-5)×4 / / .

3. A method of weaving a pelvic floor patch, characterized by, The diameter of the polypropylene monofilament is 0.08mm-0.2mm, which is used as the weaving yarn, four combing bars are used for weaving on the four-comb raschel warp knitting machine, and the pattern cycle is eight wefts; The first combing bar is padded back and forth on one needle to form the open chain structure; The second combing bar and the third combing bar are padded back and forth on three needles by combining the chain padding and the warp pile padding, and the second combing bar and the third combing bar are matched to form the quadrilateral mesh structure similar to the rhombus; The fourth combing bar is changed to the five-pitch weft insertion; The unit area weight of the pelvic floor patch is 25 g / m 2 ~ 55 g / m 2 , the thickness is 0.25 mm~0.5 mm, the porosity is 80%~90%, and the burst strength is 75 N~150 N.

4. The method of claim 3, wherein, The padding code of the first combing bar is (1-0 / 0-1)×4 / / , the padding code of the second combing bar is 1-0 / 2-3 / 3-2 / 3-2 / 4-5 / 3-2 / 2-3 / 2-3 / / , the padding code of the third combing bar is 4-5 / 3-2 / 2-3 / 2-3 / 1-0 / 2-3 / 3-2 / 3-2 / / , and the padding code of the fourth combing bar is (0-0 / 5-5)×4 / / .

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