Urinary incontinence suspension device

Abstract

A urinary incontinence suspension device comprises a mesh and pull wires fixed to the two ends of the mesh through heat shrink tubes, the mesh comprises at least two chaining structures arranged in the length direction of the mesh and weft insertion structures weaving the adjacent chaining structures together, and weft insertion yarn sections of the weft insertion structures are perpendicular to the chaining structures; the mesh further comprises a variable looping structure arranged on the side edge of the chaining structure, and woven mesh holes are formed between the variable looping structure and the chaining structure. The longitudinal elongation rate and the transverse shrinkage rate in the stress state are reduced, the size stability is better, and the recurrence probability of pressure urinary incontinence of postoperative patients is reduced; not only can the biocompatibility of the implanted mesh be effectively improved, but also the tension in the transverse direction can be kept, and the implanted mesh is prevented from shrinking due to movement in daily life; finally, the two ends of the mesh are each provided with a pull wire through a heat shrink tube, the suspension device is conveniently implanted in an operation, the implantation position of the suspension device is conveniently adjusted, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a urinary incontinence suspension device. Background Art

[0002] Stress urinary incontinence refers to the involuntary leakage of urine from the urethra when the abdominal pressure of the human body increases, such as when coughing, sneezing, laughing or exercising vigorously. Stress urinary incontinence accounts for more than 60% of urinary incontinence and is a common urological disease. It is more common in women than in men, especially in women over 50 years old. Clinically, surgical treatment is the first choice for patients with moderate and severe stress urinary incontinence. A mesh belt woven with medical synthetic materials is implanted under the patient's urethra without tension to support the middle part of the urethra and increase the resistance of the urethra to urine in the bladder. This can control stress urinary incontinence and avoid urine leakage caused by excessive urethral activity or urethral sphincter damage. At present, tension-free mid-urethral suspension has become a safe and effective mainstream treatment procedure because of its simple operation and small incision.

[0003] With the widespread application of urinary incontinence suspension, various urinary incontinence suspension devices have emerged in the medical device market. They are usually cut after the woven mesh is shaped, but the structure is mostly a simple warp flat structure, such as Johnson & Johnson's GYNECRE TVT TM The series of urinary incontinence sling products have serrated edges on both sides after cutting, with large longitudinal elongation and lateral shrinkage, and the edges have obviously been hot-melt treated, giving a certain foreign body feeling.

[0004] At present, in order to prevent the edge coils of the implant from falling apart, laser cutting or ultrasonic / hot-melt edge pressing is generally used for processing. For example, in the "A pelvic tissue implant and its manufacturing method" disclosed in U.S. Patent No. 9,452,038, the edges of the surgical implant on both sides are heated with two reinforcing ribs to prevent the edges from falling apart. However, the jagged edges and the hardening of the fabric caused by the heat treatment have not improved the foreign body sensation caused by implantation. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a urinary incontinence suspension device to solve the technical problems raised in the above-mentioned background technology.

[0006] The purpose of this utility model is achieved through the following technical solutions:

[0007] A urinary incontinence suspension device comprises a mesh and traction lines fixed at both ends of the mesh by heat shrink tubes, the mesh comprises at least two braided chain structures arranged along its length direction and a weft insert structure weaving adjacent braided chain structures together, the weft insert yarn segments of the weft insert structure and the braided chain structure are arranged perpendicular to each other; the mesh also comprises a variable loop structure arranged on the side of the braided chain structure, and a woven mesh is formed between the variable loop structure and the braided chain structure.

[0008] In the above utility model, further, the woven mesh includes hexagonal meshes and triangular meshes arranged alternately along the length direction of the mesh, the number of triangular meshes is an integer multiple of the number of hexagonal meshes, and the width of the hexagonal mesh is not less than 2 mm.

[0009] In the above utility model, further, the mesh is a non-absorbable medical synthetic monofilament or a braided wire woven using the non-absorbable medical synthetic monofilament, wherein the non-absorbable medical synthetic monofilament is woven using one or more of polypropylene monofilament, polyvinylidene fluoride monofilament, polyester monofilament, and polyamide monofilament.

[0010] In the above utility model, further, the diameter of the non-absorbable medical synthetic monofilament does not exceed 0.2 mm.

[0011] In the above utility model, further, the width of the mesh is 10-13 mm, and the thickness of the mesh does not exceed 0.8 mm.

[0012] In the above utility model, further, protective film tubes are respectively provided on both sides of the mesh, and the ends of the protective film tubes are fixed in the heat shrink tube.

[0013] In the above utility model, further, the inner diameter of the heat shrinkable tube does not exceed 5 mm, and the heat shrinkage ratio is not less than 2.

[0014] The beneficial effects of the utility model are:

[0015] Firstly, the utility model provides a urinary incontinence suspension device, on which a mesh is provided with at least two braided chain structures arranged along its length direction, the arrangement direction of which is consistent with the force direction of the suspension device after implantation, and the weft yarn segment of the weft structure is arranged perpendicular to the braided chain structure, so that the weft yarn segment can be perpendicular to the force direction of the suspension device after implantation, so that the longitudinal elongation and lateral shrinkage of the suspension device mesh under stress state are reduced, the dimensional stability is better, and the recurrence rate of stress urinary incontinence in patients after surgery is reduced; secondly, the mesh also includes a variable loop structure arranged on the side of the braided chain structure, and a woven mesh is formed between the variable loop structure and the braided chain structure, which can not only effectively improve the biocompatibility of the mesh after implantation, but also maintain lateral tension to avoid the mesh from shrinking due to movement in daily life after implantation; finally, a traction line is arranged at each end of the mesh through a heat shrink tube, which is convenient for surgical implantation of the suspension device and adjustment of the implantation position of the suspension device, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 This is a motion diagram of the mesh pad yarn of the utility model;

[0018] Figure 3 It is a schematic diagram of the mesh after finalization of the utility model.

[0019] In the figure, 1. main mesh; 1-1. chain structure; 1-2. loop structure; 1-3. weft structure; 1-4. woven mesh; 2. traction line; 3. heat shrink tube; 4. protective film tube. DETAILED DESCRIPTION

[0020] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0021] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0022] Example:

[0023] A urinary incontinence suspension device, see attached Figure 1 As shown, it includes a mesh 1 and a traction line 2 fixed at both ends of the mesh 1 by a heat shrink tube 3. The traction line 2 facilitates surgical implantation of the suspension device and adjustment of the implantation position of the mesh 1, making it more convenient to use. Secondly, the width of the mesh 1 is preferably 11 mm, and the thickness of the mesh 1 does not exceed 0.8 mm, which can reduce the foreign body sensation of the patient after the implantation of the suspension device while ensuring the use effect. Figure 2 As shown in the mesh pad yarn movement diagram, the mesh 1 includes at least two chain structures 1-1 arranged along its length direction and a weft structure 1-3 that weaves the adjacent chain structures 1-1 together, and the weft yarn segments of the weft structure 1-3 are arranged perpendicular to the chain structure 1-1; when the mesh 1 is implanted, the force direction of the mesh 1 is the arrangement direction of the chain structure 1-1. And because the weft yarn segments of the weft structure 1-3 are arranged perpendicular to the chain structure 1-1, the force direction of the weft yarn segments 1-3 and the mesh 1 after implantation can be perpendicular, so that the longitudinal elongation and lateral shrinkage of the suspension device mesh under stress are reduced, the dimensional stability is better, and the recurrence rate of stress urinary incontinence in patients after surgery is reduced. Please continue to refer to the attached Figure 2 As shown, the mesh 1 also includes a variable loop structure 1-2 arranged on the side of the chain structure 1-1, and the variable loop structure 1-2 and the chain structure 1-1 form a Figure 3 Woven meshes 1-4 are shown.

[0024] For further information, see Appendix Figure 3 As shown, the woven meshes 1-4 on the mesh 1 include hexagonal meshes and triangular meshes arranged alternately along the length direction of the mesh 1, the number of triangular meshes is an integer multiple of the number of hexagonal meshes, and the width of the hexagonal mesh is not less than 2 mm. Not only can the biocompatibility of the mesh 1 after implantation be effectively improved, but also the lateral tension can be maintained to prevent the mesh 1 from shrinking due to movement in daily life after implantation.

[0025] Specifically, in the forming process of the mesh 1, five combs are used on a common warp knitting machine, wherein the first comb (GB1) adopts a closed (or open) chain weaving structure, with one thread and three threads in the air; the second (GB2) and the third (GB3) are loop structures, with one thread and three threads in the air symmetrically; the fourth (GB4) and the fifth (GB5) are weft-inserting structures, with one thread and three threads in the air symmetrically, and finally a woven blank for preparing the mesh 1 is obtained. The woven blank woven by the warp knitting machine is knitted along the attached Figure 2 Cut along the black dotted line shown in the figure to obtain a mesh sheet 1 having four braided chain structures 1-1. Figure 1As shown, protective film tubes 4 are provided on both sides of the mesh 1, and the ends of the protective film tubes 4 are fixed in the heat shrink tube 3. To ensure the connection stability between the heat shrink tube 3, the protective film tube 4 and the mesh 1, the inner diameter of the heat shrink tube does not exceed 5 mm, and the heat shrinkage ratio is not less than 2. In this embodiment, by providing the protective film tube 4 on the side of the mesh 1, the foreign body sensation caused to the patient by the burrs generated after the mesh 1 is cut is reduced.

[0026] More specifically, during the production process, the mesh 1 is made of non-absorbable medical synthetic monofilaments or braided wires woven with non-absorbable medical synthetic monofilaments, wherein the non-absorbable medical synthetic monofilaments can be woven with one or more of polypropylene monofilaments, polyvinylidene fluoride monofilaments, polyester monofilaments, and polyamide monofilaments. Secondly, to ensure that the thickness of the mesh 1 does not exceed 0.8 mm, the diameter of the non-absorbable medical synthetic monofilaments when selected does not exceed 0.2 mm.

[0027] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A urinary incontinence suspension device, characterized in that: The invention comprises a mesh and traction lines fixed at both ends of the mesh by heat shrink tubes, wherein the mesh comprises at least two braided chain structures arranged along its length direction and a weft insert structure weaving adjacent braided chain structures together, and the weft insert yarn segments of the weft insert structure and the braided chain structure are arranged perpendicular to each other; the mesh also comprises a variable loop structure arranged on the side of the braided chain structure, and a woven mesh is formed between the variable loop structure and the braided chain structure.

2. A urinary incontinence suspension device according to claim 1, characterized in that: The woven mesh includes hexagonal meshes and triangular meshes arranged alternately along the length direction of the mesh, the number of the triangular meshes is an integer multiple of the number of the hexagonal meshes, and the width of the hexagonal mesh is not less than 2 mm.

3. A urinary incontinence suspension device according to claim 1, characterized in that: The mesh is a non-absorbable medical synthetic monofilament or a braided wire woven using the non-absorbable medical synthetic monofilament, wherein the non-absorbable medical synthetic monofilament is woven using one or more of polypropylene monofilament, polyvinylidene fluoride monofilament, polyester monofilament, and polyamide monofilament.

4. A urinary incontinence suspension device according to claim 3, characterized in that: The diameter of the non-absorbable medical synthetic monofilament does not exceed 0.2 mm.

5. A urinary incontinence suspension device according to claim 1, characterized in that: The width of the mesh is 10-13 mm, and the thickness of the mesh does not exceed 0.8 mm.

6. A urinary incontinence suspension device according to any one of claims 1 to 5, characterized in that: Protective film tubes are also provided on both sides of the mesh respectively, and the ends of the protective film tubes are fixed in the heat shrink tube.

7. A urinary incontinence suspension device according to claim 6, characterized in that: The inner diameter of the heat shrink tube does not exceed 5 mm, and the heat shrinkage ratio is not less than 2.

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