Medical thread

Abstract

The utility model discloses a medical wire which comprises a plurality of wire rod assemblies, barbs are arranged on the surfaces of the wire rod assemblies, the plurality of wire rod assemblies are linearly distributed at intervals to form a wire rod main body, a mesh-shaped woven mesh is sleeved on the wire rod main body, the top ends of the barbs penetrate out of the woven mesh, and the barbs are arranged on the surfaces of the wire rod assemblies. And the bottoms of the barbs are embedded into the woven mesh. The utility model provides a medical wire which has better flexibility while retaining an anchoring structure and good overall mechanical strength.

Description

Technical Field

[0001] The utility model belongs to the field of medical devices, and particularly relates to a medical thread. Background Art

[0002] A suture is a thread for suturing a wounded wound or a damaged human body part due to surgery or the like. In the initial stage, sutures used nylon and silk threads, which are synthetic polymers with high physical properties. Later, other alternative materials were developed and widely used. However, these materials are non-degradable and non-biocompatible in the human body. Therefore, after a predetermined time after surgery, they should be removed through additional surgery, which is inconvenient to use and thus has limited applications.

[0003] Currently, in order to reduce the pain of postoperative suture removal in clinical practice, absorbable medical sutures are generally used. And for the fixation effect or the aesthetics of suturing, an anchoring structure (barbs or serrations) is generally designed on the surface of the medical thread. The existing anchoring structures are usually obtained by cutting or imprinting on the wire substrate, and the anchoring structure will reduce the mechanical properties of the medical thread or form defects at the anchoring site, making the medical thread prone to breakage at the anchoring site during use and degradation, resulting in the failure of the medical thread. Previously, there was also a method of covering a mesh structure on the surface of the medical thread to enhance its strength, but this would reduce the overall flexibility of the medical thread and is not conducive to surgical operations.

[0004] Therefore, designing a medical thread with good mechanical strength and flexibility is a technical problem that needs to be urgently solved by those skilled in the art. Summary of the Utility Model

[0005] The utility model provides a medical thread, which has better flexibility while retaining the anchoring structure and good overall mechanical strength.

[0006] To solve the above technical problems, the technical solution provided by the utility model is as follows:

[0007] A medical thread includes a plurality of wire components. Barbs are provided on the surface of the wire components. The plurality of wire components are linearly and spaced apart to form a wire body. A woven mesh with a mesh structure is sleeved on the wire body. The top ends of the barbs protrude out of the woven mesh, and the bottom ends of the barbs are embedded in the woven mesh.

[0008] Further, the woven mesh is woven from absorbable monofilaments or absorbable multifilaments.

[0009] Further, at least two barbs are provided on the wire component.

[0010] Further, the barbs incline towards the same end of the wire body, and the wire body is a symmetric structure.

[0011] Further, the barbs are inclined towards the same end of the wire body, making the wire body an asymmetric structure.

[0012] Further, the wire component includes a cylinder and the barbs, and the length of the cylinder is 0.4 - 2 mm.

[0013] Further, the distance between two adjacent wire components is 0.5 - 10 mm.

[0014] Further, the wire diameter of the braided mesh is 0.09 - 0.25 mm.

[0015] Further, the length of the barbs is 0.2 - 1.5 mm.

[0016] Further, the wire component is made of an absorbable material.

[0017] Advantages of the present utility model: While retaining the anchoring structure, the medical wire of the present utility model effectively improves the overall strength of the medical wire through the braided mesh sleeved on the wire body, reducing the risk of fracture during use; the wire body is composed of multiple wire components arranged at intervals, which can significantly increase the flexibility of the medical wire and is easy for surgical operation; the medical wire of the present utility model is made of an absorbable material and is provided with a braided mesh structure on the surface. Even during the degradation process, the braided mesh in a mesh structure on the wire body has been combined with the body tissue, buffering the impact brought by the degradation and fracture of the wire body. The biodegradable and absorbable polylactic acid can effectively stimulate the regeneration of collagen, so that there is still a fixing effect after the anchoring structure of the medical wire degrades and fails. Description of the Drawings

[0018] Figure 1 It is the overall structure diagram of the wire component of the first embodiment of the present utility model;

[0019] Figure 2 It is the overall structure diagram of the medical wire of the first embodiment of the present utility model;

[0020] Figure 3 It is the front view of the medical wire of the first embodiment of the present utility model;

[0021] Figure 4 It is the side view of the medical wire of the first embodiment of the present utility model;

[0022] Figure 5 It is the front view of the medical wire of the second embodiment of the present utility model;

[0023] Figure 6 It is the side view of the medical wire of the second embodiment of the present utility model;

[0024] Figure 7 The front view of the medical thread according to the third embodiment of the present utility model;

[0025] Figure 8 The side view of the medical thread according to the third embodiment of the present utility model;

[0026] Figure 9 The front view of the medical thread according to the fourth embodiment of the present utility model;

[0027] Figure 10 The side view of the medical thread according to the fourth embodiment of the present utility model;

[0028] Figure 11 The overall structural diagram of the wire component according to another embodiment of the present utility model.

[0029] Reference numerals include:

[0030] 100 - medical thread; 110 - wire component; 111 - cylinder

[0031] 112 - barb; 120 - wire body; 130 - braided mesh Detailed implementation manners

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0034] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0035] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more, unless otherwise specifically defined.

[0036] See Figures 1-4 , a medical thread provided by the present utility model. The medical thread 100 includes a plurality of wire components 110. The wire component 110 includes a cylinder 111 and barbs 112 provided on the surface of the cylinder 111. The plurality of wire components 110 are arranged at intervals in a straight line to form a wire main body 120. A braided mesh 130 with a mesh structure is sleeved on the wire main body 120. The top ends of the barbs 112 penetrate outside the braided mesh 130, and the bottoms of the barbs 112 are embedded in the braided mesh 130. The mesh structure of the braided mesh 130 fixes the plurality of wire components 110 in a straight-line arrangement, so that they do not come out or slide within the mesh. At least 2 barbs 112 are provided on the surface of each wire component 110, and the barbs 112 can face different directions. The barbs 112 are formed by cutting, injection molding, molding or machining. The wire component 110 of the present utility model is made of an absorbable polylactic acid material, and the braided mesh 130 can be made of one of an absorbable monofilament or an absorbable multifilament. When the braided mesh 130 is made of an absorbable monofilament, the strength of the medical thread 100 in the stretching direction can be effectively improved, thereby improving the overall mechanical strength of the medical thread 100 and reducing the fracture risk during use. When the braided mesh 130 is made of an absorbable multifilament, after the anchoring structure of the medical thread 100 degrades and fails, the braided mesh 130 with a mesh structure has combined with the body tissue to play a partial fixing effect. The medical thread 100 provided by the present utility model is entirely made of an absorbable material. Through the degradation of the absorbable material, collagen regeneration can be effectively stimulated, and the healing of the wound can be accelerated. The wire components 110 in this utility model are arranged at intervals, and only the structure of the braided mesh 130 exists at the intermediate interval. It can be bent at multiple angles, thus greatly increasing the overall flexibility of the medical thread 100 and facilitating surgical operation.

[0037] As Figure 3 and Figure 4 shown, the specification of the medical thread 100 in the present utility model is 2-0# to 3#, and the wire diameter of the braided mesh 130 ranges from 0.09 to 0.25 mm. Experiments have shown that when the braided mesh 130 is made of an absorbable monofilament material, the wire diameter of the braided mesh 130 is preferably in the range of 0.10 to 0.18 mm, and when the braided mesh 130 is made of an absorbable multifilament, the wire diameter of the braided mesh 130 is preferably in the range of 0.12 to 0.19 mm.

[0038] As Figure 1 and Figure 2 shown, in the present utility model, the height of the cylinder 111 is 0.7 - 10 mm, the diameter of the cylinder 111 is 0.2 - 0.8 mm, the length of the barb 112 (i.e., the distance from the outer root to the top of the barb 112) ranges from 0.2 - 1.5 mm, and the spacing between every two adjacent wire components 110 is 0.5 - 10 mm for the best effect. This can ensure the overall stability of the medical thread 100, neither being unable to maintain the structure of the thread due to the wire components 110 being too sparse nor having too poor flexibility due to the wire components 110 being too dense. The size of the widest part at the bottom of the barb 112 can be less than the height of the cylinder 111 (as Figure 1 shown), or can be equal to the height of the cylinder 111 (as Figure 11 shown).

[0039] As Figure 3 and Figure 4 shown, on the cylinder 111 of the wire component 110, 2 barbs 112 are symmetrically arranged, and the barbs 112 all face the same end. In this embodiment, the barbs 112 of all wire components 110 are inclined towards the same end in the axial direction of the wire body 120, and the wire body 120 is a symmetric structure (having a symmetry plane along the axis), that is, the two barbs 112 of each wire component 110 respectively face the same direction. Therefore, from the side view, the medical thread 100 has a two - row barb 112 structure. As Figure 5 and Figure 6 shown, in the second embodiment, the radial orientation of the barbs 112 of each wire component 110 is disordered, and the wire body 120 is an asymmetric structure (without a symmetry plane along the axis), that is, from the side view, the barbs 112 of the medical thread 100 face different directions. The barbs 112 of the medical thread 100 with this structure can contact the human tissue at multiple angles, and the fixing effect is better. Therefore, the operator can select the medical thread 100 with different barb 112 structures with different orientation distributions according to the surgical requirements.

[0040] In the third embodiment, as Figure 7 and Figure 8 shown, 3 barbs 112 are evenly arranged on the cylinder 111 of the wire component 110, the barbs 112 all face the same end of the cylinder 111, the barbs 112 of all wire components 110 are inclined towards the same end of the wire body 120, and the wire body 120 is a symmetric structure, that is, the three barbs 112 of each wire component 110 respectively face the same direction. Therefore, from the side view, the medical thread 100 has a three - row barb 112 structure.

[0041] In the fourth embodiment, as Figure 9 and Figure 10As shown, 4 barbs 112 are evenly arranged on the cylinder 111 of the wire component 110. All the barbs 112 face the same end of the cylinder 111. The barbs 112 of all the wire components 110 are inclined towards the same end of the wire body 120, making the wire body 120 a symmetric structure, that is, the four barbs 112 of each wire component 110 face the same direction respectively. Therefore, when viewed from the side, the medical thread 100 has a structure with 4 rows of barbs 112.

[0042] In another embodiment, the orientations of the barbs 112 of each wire component 110 are disordered, making the wire body 120 an asymmetric structure. The disordered arrangement of the orientations of the barbs 112 enables the medical thread 100 to come into contact with human tissues at multiple angles, improving its fixing or stretching performance.

[0043] In yet another embodiment, 1 barb 112 is arranged on each wire component 110, and all the barbs 112 on the wire body 120 are arranged in a spiral distribution, which can also achieve the fixing or stretching performance of the medical thread.

[0044] The medical thread 100 of the present utility model can adjust the spacing between the wire components 110 according to the surgical requirements to achieve different flexibilities. It can also adjust the number and orientation of the barbs 112 according to the needs to achieve better effects and meet the surgical requirements, being more flexible in surgical selection.

[0045] The above content is only the preferred embodiment of the present utility model. For those of ordinary skill in the art, many changes can be made in the specific implementation manners and application scopes according to the idea of the present utility model. As long as these changes do not deviate from the concept of the present utility model, they all fall within the protection scope of the present utility model.

Claims

1. A medical thread, characterized in that, It includes a plurality of wire components (110), barbs (112) are arranged on the surface of the wire components (110), and the plurality of wire components (110) are spaced apart in a straight line to form a wire body (120). A braided mesh (130) with a mesh structure is sleeved on the wire body (120). The top of the barb (112) penetrates outside the braided mesh (130), and the bottom of the barb (112) is embedded in the braided mesh (130).

2. The medical thread according to claim 1, characterized in that, The braided mesh (130) is woven from absorbable monofilaments or absorbable multifilaments.

3. The medical thread according to claim 2, characterized in that, At least two barbs (112) are arranged on the wire component (110).

4. The medical thread according to claim 3, characterized in that, The barbs (112) are inclined towards the same end of the wire body (120), and the wire body (120) is a symmetric structure.

5. The medical thread according to claim 3, wherein, The barbs (112) are inclined towards the same end of the wire body (120), and the wire body (120) is an asymmetric structure.

6. The medical thread according to claim 4 or 5, characterized in that, The wire component (110) includes a cylinder (111) and the barb (112), and the length of the cylinder (111) is 0.4 - 2 mm.

7. The medical thread according to claim 6, characterized in that The distance between two adjacent wire components (110) is 0.5 - 10 mm.

8. The medical thread according to claim 7, wherein, The wire diameter of the braided mesh (130) is 0.09 - 0.25 mm.

9. The medical thread according to claim 8, characterized in that, The length of the barb (112) is 0.2 - 1.5 mm.

10. The medical thread according to claim 9, wherein, The wire component (110) is made of an absorbable material.

Images