Absorbable net-shaped suture line
By designing absorbable mesh sutures, employing a multi-strand filament woven mesh structure and an antibacterial coating, the problem of tissue tearing caused by force concentration during suture use is solved, achieving stress dispersion and biocompatibility, and reducing the risk of surgical failure.
Patent Information
- Application Number
- CN202422956128.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-02
AI Technical Summary
Existing absorbable sutures cannot effectively disperse force during use, resulting in tissue being in a state of high tension, which increases the possibility of tissue being cut through and poses a risk of surgical failure.
Absorbable mesh sutures are used, which are made of multiple strands of filaments with a mesh structure containing both large and micropores. The material is made of lactic acid, polyglycolic acid, etc., and coated with an antibacterial agent. The suture needles are made of stainless steel to distribute stress and prevent tissue tearing.
It achieves effective stress dispersion, reduces the risk of tissue tearing, promotes new blood vessel formation, improves biocompatibility, avoids surgical failure, and the material is completely degradable, reducing foreign body sensation and inflammatory response.
Smart Images
Figure CN223586297U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an absorbable mesh suture. Background Technology
[0002] The use of sutures is fundamental to surgery. The role of sutures is to introduce external structures with high tensile strength into separated pieces of tissue so that these pieces remain close together until scar formation is possible, thereby establishing continuity and strength between the tissues.
[0003] Currently, sutures on the market are divided into absorbable and non-absorbable types. Absorbable sutures can degrade within human tissue and be further absorbed or excreted from the body, effectively avoiding the pain caused by secondary surgery. Furthermore, the degradation of the sutures reduces the foreign body sensation in the patient's body, alleviates inflammation, and results in a smooth and even wound after recovery. With the development of modern medical technology, absorbable sutures not only guarantee healing effects similar to non-absorbable sutures but also significantly reduce hospitalization time and economic costs.
[0004] However, a significant drawback of current sutures is their inability to effectively distribute force, instead concentrating it at geometric points, thus creating sharp edges in the axial dimension. Under these conditions, tissue is constantly exposed to tension, and increased stress concentration at geometric points or sharp edges increases the likelihood of tissue rupture. Therefore, they are prone to causing hand injuries during use, and their small cross-sectional diameter actually increases the localized force applied to the tissue, thereby increasing the risk of suture rupture and eventual surgical failure. Statistics show that 22% of patients develop incisional hernias after 3 years, 63% of hernia repair surgeries fail after 10 years, 39.2% of rotator cuff repairs fail, and 9.8% of umbilical hernia repair surgeries fail after 3 years.
[0005] Therefore, an absorbable mesh suture is proposed to address the above problems. Utility Model Content
[0006] The purpose of this invention is to overcome the existing defects and provide an absorbable mesh suture that can disperse tension, enter the body, and integrate with the tissue.
[0007] The technical solution to achieve the above objective is: an absorbable mesh suture, comprising a suture body, wherein the suture body has a mesh structure and contains a large number of pores;
[0008] The suture is made of an absorbable material, which is made of one of the following: lactic acid (PLA), polyglycolic acid (PGA), polydioxanone (PPDO), poly(glycolic acid) lactide (PGLA), and polyethylene glycol caprolactone (PGCL).
[0009] The suture body is used in conjunction with the suture needle.
[0010] Preferably, the surface of the suture is coated with an antibacterial agent.
[0011] Preferably, the antibacterial agent is made from one of benzalkonium chloride, cinnamaldehyde, chlorhexidine, and eugenol.
[0012] Preferably, the mesh structure of the suture is formed by loosely weaving multiple strands of filament after stretching and shaping.
[0013] Preferably, the suture body comprises macropores and micropores, with the diameter of the macropores ranging from 200μm to 1mm and the diameter of the micropores ranging from 1μm to 200μm. The shape of the pores includes rhomboid, elliptical, and amorphous shapes.
[0014] Preferably, the suture needle is made of 302 stainless steel.
[0015] The beneficial effects of this invention are as follows: This absorbable mesh suture can be widely used in surgical, dental, ophthalmic, and orthopedic suturing applications. The suture has a hollow mesh structure, loosely woven from multiple strands of absorbable material. The suture's pores include both macropores and micropores. Simultaneously, an antibacterial agent is added to the absorbable material to prevent bacterial growth within the pores. The mesh structure reduces tension on the tissue at the puncture point and lowers the likelihood of tissue tearing. Furthermore, the porous structure promotes angiogenesis and tissue ingrowth into the suture itself, maximizing biocompatibility.
[0016] This absorbable mesh suture uses absorbable materials that can completely degrade in the body. The degradation time can be controlled by adjusting the ratio of different materials. The hollow mesh structure has high strength and a large surface area, enabling rapid and complete tissue integration throughout the implant. The mesh structure effectively disperses stress, preventing tissue tearing and surgical failure. The porous structure allows it to integrate with muscles, fascia, and / or tendons, forming a robust and durable prosthesis, thus maximizing biocompatibility. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the connection of the absorbable mesh suture of this utility model;
[0018] Figure 2 This is a schematic diagram of the suture mesh structure of this utility model.
[0019] In the picture: 1. Suture thread; 2. Suture needle. Detailed Implementation
[0020] The technical solution of this utility model will now be clearly and completely described in conjunction with the accompanying drawings. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0021] The present invention will be further described below with reference to the accompanying drawings.
[0022] like Figure 1-2 As shown, an absorbable mesh suture includes a suture body 1, which has a mesh structure and contains numerous pores. The suture body 1 is made of an absorbable material selected from PLA (polylactic acid), PGA (polyglycolic acid), PPDO (polydioxanone), PGLA (polyethylene lactide), and PGCL (polyethylene glycol caprolactone). The suture body 1 is used in conjunction with a suture needle 2, which is made of 302 stainless steel. These absorbable materials have high tensile strength, making them suitable for most soft tissue sutures; they provide long-lasting support, with effective tension reaching 2-3 months; they have good biocompatibility, exhibiting minimal reaction with tissue; and they are completely hydrolyzed, degrading entirely into water and carbon dioxide.
[0023] Specifically, the surface of the suture body 1 is coated with an antibacterial agent. The antibacterial agent is made from one of benzalkonium chloride, cinnamaldehyde, chlorhexidine, and eugenol.
[0024] Specifically, the mesh structure of the suture body 1 is loosely woven from multiple strands of filaments after being stretched and shaped. The suture body 1 contains macropores and micropores. The diameter of the macropores ranges from 200μm to 1mm, and the diameter of the micropores ranges from 1μm to 200μm. The shapes of the pores include rhomboid, elliptical, and amorphous shapes.
[0025] Specifically, the mesh structure not only has high strength and a large surface area, enabling rapid and complete tissue integration throughout the implant, but also disperses tension, preventing tissue from being torn apart.
[0026] Specifically, the preparation of suture body 1 includes raw material selection, melt plasticizing, extrusion molding, stretching and shaping, and cutting and packaging. One or more raw materials are selected, such as polylactic acid (PLA), polyglycolic acid (PGA), polydioxanone (PPDO), poly(glycolic acid) lactone (PGLA), and polyethylene glycol caprolactone (PGCL). One or more antibacterial agents, such as benzalkonium chloride, cinnamaldehyde, chlorhexidine, and eugenol, are added. After melting at 100-300℃, the sutures are extruded through an extruder. During extrusion, the screw speed and temperature are controlled to ensure that defects such as bubbles are not generated. The extruded filaments are stretched and shaped, then loosely woven to form a hollow mesh structure containing both macropores and micropores. Finally, the shaped product is cut and packaged according to different specifications. The porous structure disperses stress between the suture and the tissue puncture point, the contact point with the tissue, and / or the closure point, thereby preventing tissue tearing and surgical failure.
[0027] Specifically, the suture needle 2 comes in various models and specifications, including round needles, angled needles, and straight needles, and is preferably made of 302 stainless steel. The suture body 1 and the suture needle 2 are manufactured as standard parts for use together.
[0028] Specifically, during patient use, the suture body 1, a mesh suture, is inserted into the tissue along with the suture needle 2. The mesh structure is strong and has a large surface area, effectively dispersing the stress of the suture on the tissue and preventing it from being torn apart. It also easily integrates with the tissue, forming a strong and durable repair. The suture material has good biocompatibility and is absorbable, completely degrading within the body and avoiding damage caused by secondary surgery.
[0029] This absorbable mesh suture can be widely used in surgical, dental, ophthalmic, and orthopedic suture applications. The suture has a hollow mesh structure, loosely woven from multiple strands of absorbable material. The suture contains both macropores and micropores. Antibacterial agents are added to the absorbable material to prevent bacterial growth within the pores. The mesh structure reduces tension on the tissue at the puncture point, lowering the likelihood of tissue tearing. Simultaneously, the porous structure promotes angiogenesis and tissue ingrowth into the suture itself, maximizing biocompatibility.
[0030] This absorbable mesh suture uses absorbable materials that can completely degrade in the body. The degradation time can be controlled by adjusting the ratio of different materials. The hollow mesh structure has high strength and a large surface area, enabling rapid and complete tissue integration throughout the implant. The mesh structure effectively disperses stress, preventing tissue tearing and surgical failure. The porous structure allows it to integrate with muscles, fascia, and / or tendons, forming a robust and durable prosthesis, thus maximizing biocompatibility.
[0031] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. An absorbable mesh suture, characterized in that, Includes a suture body (1), which has a mesh structure and contains a large number of pores; The suture body (1) is made of absorbable material, which is made of one of the following materials: lactic acid, polyglycolic acid, polydioxanone, poly(ethylene glycol) lactide, and polyethylene glycol caprolactone. The suture body (1) is used in conjunction with the suture needle (2).
2. The absorbable mesh suture according to claim 1, characterized in that, The surface of the suture body (1) is coated with an antibacterial agent.
3. The absorbable mesh suture according to claim 2, characterized in that, The antibacterial agent is made from one of benzalkonium chloride, cinnamaldehyde, chlorhexidine, and eugenol.
4. The absorbable mesh suture according to claim 1, characterized in that, The mesh structure of the suture body (1) is made of multiple strands of filaments that have been stretched and shaped before being loosely woven.
5. The absorbable mesh suture according to claim 1, characterized in that, The suture body (1) includes macropores and micropores. The diameter of the macropores ranges from 200μm to 1mm, and the diameter of the micropores ranges from 1μm to 200μm. The shape of the pores is rhomboid, elliptical, or amorphous.
6. The absorbable mesh suture according to claim 1, characterized in that, The suture needle (2) is made of 302 stainless steel.