A mesh suture anchor

Abstract

The present application relates to a mesh suture anchor, which includes a belt anchor, at the tail end of which two sutures are provided; an interface screw, at which two interface screws are provided and are pulled at the tail end of each suture respectively, and the two interface screws and the belt anchor are arranged in a triangle so that a certain angle is formed between the two sutures; a winding piece, respectively provided on the two sutures, and each winding piece is provided with a plurality of holes extending along its length direction; a covering suture, at which two covering sutures are provided and cross-wound in the holes to form a cross-mesh structure, and the free ends of the two covering sutures are wound on the corresponding interface screws. The present application uses the winding piece to make the covering suture movably wound on the suture to form a cross-mesh structure, and the covering area of ​​the cross-mesh structure can be adjusted by tightening or loosening the covering suture, which has the effect of facilitating the adaptive adjustment of the covering range according to the surgical scene and the size of the soft tissue to be fixed.

Description

Technical Field

[0001] The present application relates to the field of medical devices, and in particular to a mesh suture anchor. Background Art

[0002] In many soft tissue repair surgeries in the current medical field, it is a common practice to use wire anchors to fix the soft tissue to bone tissue. This technology is widely used in arthroscopic surgery and other minimally invasive surgeries to establish a stable connection between damaged soft tissue (such as tendons and ligaments) and bones. However, this traditional method has some limitations and potential problems.

[0003] First, as a means of fixation, sutures may leave lasting marks when compressing surrounding tissues. This compression can affect the normal morphology of the soft tissue to be fixed in the long term, which may hinder wound recovery and functional reconstruction. In addition, tying knots on sutures when necessary requires a high level of technical skills from the doctor, especially in minimally invasive surgery, where knotting is more difficult due to space limitations. Secondly, the knot itself may cause a foreign body sensation in the body, causing discomfort to the patient, and continuous friction may also damage the already fixed soft tissue to be fixed, which may lead to repair failure in severe cases.

[0004] With the development of medical technology, some forms of fixing the soft tissue to be fixed by pressing it with a structure with a large contact surface, such as a cross-mesh structure, a woven structure, etc., have been proposed. Although this form does not require knotting and solves the foreign body sensation caused by knotting, its coverage is single and cannot be adaptively adjusted according to the surgical scenario and the size of the soft tissue to be fixed. Summary of the invention

[0005] In order to facilitate adaptive adjustment of the coverage range according to the surgical scenario and the size of the soft tissue to be fixed, the present application provides a mesh suture anchor.

[0006] The present application provides a mesh suture anchor adopting the following technical solution:

[0007] A mesh suture anchor, comprising:

[0008] A wire anchor, wherein the tail end of the wire anchor is provided with two sutures;

[0009] An interface screw, wherein two of the interface screws are provided and are pulled on the tail end of each of the sutures respectively, and the two interface screws and the anchor nail are arranged in a triangle, so that a certain angle is formed between the two sutures;

[0010] Wrapping pieces, respectively arranged on the two suture lines, each of the wrapping pieces is provided with a plurality of holes extending along its length direction;

[0011] Compression sutures, wherein two compression sutures are provided and cross-wound in the hole to form a cross-net structure, and the free ends of the two compression sutures are wound around the corresponding interface screws.

[0012] By adopting the above technical solution, a winding piece with a plurality of holes is provided on the suture line, and the covering sutures are arranged in a cross manner in the holes, so as to form a cross mesh structure for covering the soft tissue to be fixed. By tightening or loosening the free ends of the covering sutures, the angle between the two sutures can be changed, and the covering area of ​​the cross mesh structure can be changed, so as to adapt to different surgical usage scenarios; at the same time, the mesh structure formed in a cross form has fewer connection points formed by the intersection of the two covering sutures compared with the multi-diamond mesh structure in the prior art, and the pressure on the soft tissue to be fixed is smaller; a plurality of holes are provided on the winding piece, and the number of connection points formed by the two covering sutures can also be adjusted by changing the winding density of the covering sutures, so as to adjust the covering force of the soft tissue to be fixed.

[0013] Preferably, the winding member comprises a wire tube sleeved on the suture thread, the wire tube is woven using an elastic biocompatible material, and the holes are pores naturally formed on the surface of the wire tube after weaving.

[0014] By adopting the above technical scheme, a braided wire tube is sleeved on the suture, and the wire tube has a certain elasticity. The wire tube is in elastic contact with the soft tissue to be fixed, and the contact area between the wire tube and the soft tissue to be fixed is larger than the contact area between the suture and the soft tissue to be fixed, thereby reducing the pressure on the suture position. The compression suture is directly passed through the pores naturally formed by the weaving of the wire tube. The original junction point between the compression suture and the suture is transferred to the wire tube, and the wire tube has a certain elasticity, which can better disperse the stress at the junction point and reduce the pressure on the soft tissue to be fixed.

[0015] Preferably, the joining points between the compression suture and the line tube are regularly staggered, and the joining points are distributed on both sides of the suture; or

[0016] The joining points of the compression suture and the wire tube are arranged in an irregular scattered manner.

[0017] By adopting the above technical solution, the joining points of the compression suture and the wire tube are manually adjusted so that the joining points of the compression suture and the wire tube are distributed instead of being concentrated in a straight line, thereby facilitating better dispersion of the stress at the joining points of the wire tube and the compression suture.

[0018] Preferably, the joining point between the compression suture and the wire tube is located on a side of the wire tube away from the implanted tissue; or the joining points between the compression suture and the wire tube are distributed on both sides of the wire tube.

[0019] By adopting the above technical solution, by distributing the joining points of the compression suture and the wire tube on both sides of the wire tube close to / far from the soft tissue to be fixed, it is convenient to better disperse the stress and further reduce the pressure on the soft tissue to be fixed.

[0020] Preferably, the wire tube is slidably disposed on the suture line, and the length of the wire tube is 2 / 3 to 3 / 4 of the length of the suture line.

[0021] By adopting the above technical solution, the wire tube can slide along the suture line, which is convenient for adjusting the pressing position of the cross-mesh structure. At the same time, the length of the wire tube is designed to be 2 / 3~3 / 4 of the length of the suture line, ensuring that the pressing area of ​​the cross-mesh structure meets the use requirements.

[0022] Preferably, the wire tube is conical, the diameter of the first end of the wire tube is 2 mm to 3 mm, the diameter of the second end of the wire tube is 3 mm to 4 mm, and the first end of the wire tube is arranged close to the wire anchor.

[0023] By adopting the above technical solution, since the formed cross-mesh structure is triangular, the pulling force of the compression suture located at the free end is greater than the pulling force of the compression suture located at the tip. Therefore, the shape of the wire tube is correspondingly designed to be conical, that is, the end close to the wire anchor has a smaller diameter, and the end close to the interface screw has a larger diameter, so as to make the tension at various positions of the wire tube more uniform and better disperse the stress.

[0024] Preferably, the wire tube and the compression suture are integrally woven together, and an end portion of the compression suture is fixed to the first end of the wire tube.

[0025] By adopting the above technical solution, the compression suture is directly formed integrally with the wire tube, so there is no knotting point when the compression suture is fixed to the wire tube, thereby avoiding compression of the soft tissue to be fixed.

[0026] Preferably, the winding member is a plurality of coils formed on the suture line, each of the coils has a hole and the coils are arranged along the length direction of the suture line.

[0027] By adopting the above technical solution, in another embodiment, the winding member can be a coil directly formed on one side of the suture line, and the pressed suture line crosses through the coil to form a cross mesh structure.

[0028] Preferably, the crossing angle of the two compression sutures is set to 20°-30°.

[0029] By adopting the above technical solution, when there are fewer junction points of the compression sutures in the cross-mesh structure, the pressure on the soft tissue to be fixed is smaller, and when there are more junction points of the compression sutures in the cross-mesh structure, that is, the crossing density is larger, the fixation effect is better. Setting the crossing angle of the compression sutures to 20°-30° can reduce the pressure on the soft tissue to be fixed while ensuring the fixation effect.

[0030] Preferably, the angle between the two sutures is designed to be 30°-60°.

[0031] By adopting the above technical solution, the angles of the two sutures are adjusted according to the actual situation of the operation, and can be adjusted specifically by tightening or loosening the compression sutures.

[0032] In summary, the present application includes at least one of the following beneficial technical effects:

[0033] 1. The present application provides a wrapping piece with holes on the suture line, and the compression suture is separated from the suture line. The compression suture can be reciprocated and crossed between the two sutures by using the wrapping piece to form a cross-net structure, and the compression suture can flexibly adjust the fixed position. The compression area of ​​the cross-net structure can be adjusted by tightening or loosening the compression suture, which is suitable for the use of soft tissues of different sizes to be fixed in different scenes. The cross-net structure formed by the crossing of the compression sutures has fewer connection points between the two compression sutures, which can further reduce the pressure on the soft tissue to be fixed;

[0034] 2. The present application sets a braided wire tube on two sutures, the wire tube itself is elastic, and the compression suture is passed through the naturally formed pores of the wire tube, and the junction point of the compression suture and the suture is transferred to the wire tube, so as to disperse the stress at the junction point of the compression suture and the suture, and reduce the pressure caused by the junction point to the soft tissue to be fixed;

[0035] 3. The junction points between the compression suture and the wire tube are distributed to disperse the stress at the junction points and reduce the pressure on the soft tissue to be fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the overall structure of a mesh suture anchor of the present invention.

[0037] Figure 2 It is a top view of a mesh suture anchor of the present invention.

[0038] Explanation of the reference numerals: 1. anchor with wire; 2. suture; 3. interface screw; 4. wire tube; 41. hole; 5. compression suture. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-2 This application is described in further detail.

[0040] The present application embodiment discloses a mesh suture anchor. Figure 1-Figure 2 The mesh suture anchor includes a band anchor 1, an interface screw 3, a wrapping piece and a compression suture 5. The band anchor 1 and the interface screw 3 are both fixed into the bone tissue. In the present application, the nail bodies of the band anchor 1 and the interface screw 3 are both screw-in structures, and the screw-in structure is a threaded structure arranged around the outer wall of the nail body. The threaded structure in the figure is only for schematic illustration. The actual processing of the thread is based on ensuring that it is screwed into the bone canal without loosening. The form and pitch can be combined in a variety of ways. The anchor 1 belongs to the existing structure and will not be repeated here. The tail end of the band anchor 1 is connected to two sutures 2, and two interface screws 3 are provided. The free end of each suture 2 is pulled to the interface screw 3, and the two interface screws 3 are arranged in a triangle with the band anchor 1 to ensure that a stable angle is formed between the two sutures 2. The wrapping pieces are respectively arranged on the two sutures 2, and the two wrapping pieces are provided with a plurality of holes 41 extending along their length directions. There are two compression sutures 5, which are wound in a cross manner between the holes 41 formed by the two winding pieces to form a cross-mesh structure, thereby achieving extensive coverage and stable fixation of the soft tissue to be fixed. The free ends of the two compression sutures 5 can be pulled flexibly and fixed by winding around the corresponding interface screws 3 to ensure the stability of the entire structure. Therefore, in actual surgery, the free ends of the compression sutures 5 can be tightened or loosened according to the surgical scenario and the size of the soft tissue to be fixed, thereby changing the angle between the two sutures 2 and changing the compression area of ​​the cross-mesh structure to adapt to different surgical usage scenarios.

[0041] In the first embodiment, the wrapping piece is woven into a wire tube 4 using an elastic biocompatible material. This wire tube 4 not only has good elasticity and can adapt to the bending and stretching of the suture 2, but also the natural pores on its surface can increase the contact area with the soft tissue to be fixed, thereby improving the stability of fixation. At the same time, this material also has good biocompatibility and can reduce the discomfort to the patient. The holes 41 of the wrapping piece are naturally formed pores on the surface of the wire tube 4, and the compression suture 5 is directly inserted into the pores of the wire tube 4, transferring the original connection point between the compression suture 5 and the suture 2 to the wire tube 4, and the wire tube 4 has a certain elasticity, which can better disperse the stress at the connection point and reduce the pressure on the soft tissue to be fixed.

[0042] Furthermore, in order to better disperse the stress at the junction of the compression suture 5 and the wire tube 4, the junction of the compression suture 5 and the wire tube 4 is arranged in a regular staggered manner, or in an irregular scattered manner. When the junction of the compression suture 5 and the wire tube 4 is arranged in a regular staggered manner, these junctions are distributed on both sides of the suture 2; when the junction of the compression suture 5 and the wire tube 4 is arranged in an irregular scattered manner, the junctions are also distributed as evenly as possible on both sides of the suture 2. At the same time, the junction of the compression suture 5 and the wire tube 4 can be located only on the side of the wire tube 4 away from the implanted tissue, or can be distributed on both sides of the wire tube 4 to better disperse the stress and further reduce the pressure on the soft tissue to be fixed. At the same time, this combination method can ensure that the compression suture 5 forms a stable structure with the wire tube 4 during the cross-winding process, thereby improving the stability of the entire fixing device.

[0043] The wire tube 4 is slidably arranged on the suture 2 to facilitate adjustment of the pressing position of the cross-net structure. The length of the wire tube 4 is 2 / 3 to 3 / 4 of the length of the suture 2 to ensure that the pressing area of ​​the cross-net structure meets the use requirements.

[0044] Since the formed cross-mesh structure is triangular, the pulling force of the compression suture 5 at the free end is greater than the pulling force of the compression suture 5 at the tip, so the shape of the wire tube 4 is designed to be conical, that is, the diameter of the end close to the wire anchor 1 is smaller, and the diameter of the end close to the interface screw 3 is larger, so as to make the pulling force of each position of the wire tube 4 more uniform and better disperse the stress. Specifically, the diameter of the first end of the wire tube 4 is 2mm~3mm, and the diameter of the second end of the wire tube 4 is 3~4mm. Preferably, the wire tube 4 and the compression suture 5 are woven together, and the end of the compression suture 5 is fixed to the first end of the wire tube 4 to avoid the compression suture 5 being knotted and fixed on the wire tube 4, and to avoid compressing the soft tissue to be fixed.

[0045] When there are fewer binding points of the compression sutures 5 in the cross-mesh structure, the pressure on the fixed soft tissue is smaller, and when there are more binding points of the compression sutures 5 in the cross-mesh structure, that is, the cross density is larger, the fixation effect is better. The cross angle of the compression sutures 5 is set to 20°-30°, which can reduce the pressure on the fixed soft tissue under the premise of ensuring the fixation effect. At the same time, the angle of the two sutures 2 is adjusted according to the actual situation of the operation, which can be adjusted by tightening or loosening the compression sutures 5. The present application designs the angle of the two sutures 2 to be 30°-60°.

[0046] In the second embodiment, the winding member may be a coil integrally formed on the suture thread 2, and the pressed suture thread 5 crosses through the coil to form a cross-mesh structure.

[0047] The implementation principle of a mesh suture anchor in the embodiment of the present application is as follows: first, one or more anchors 1 with wires are implanted at appropriate positions in the tissue to be repaired, and the cross mesh structure formed by the compression sutures 5 is pulled through the soft tissue to be fixed by a suture gun. The compression sutures 5 can pass through the holes 41 of the wire tube 4 as needed, and the free ends of the compression sutures 5 are wound around the interface screws 3, and finally the compression sutures 5 are fixed at the positioning holes with the interface screws 3. By tightening or loosening the free ends of the compression sutures 5, the angle between the two sutures 2 can be changed, and the compression area of ​​the cross mesh structure can be changed, so as to adapt to different surgical usage scenarios.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A mesh suture anchor, characterized in that: include: A suture anchor (1), wherein two suture threads (2) are provided at the tail end of the suture anchor (1); An interface screw (3), wherein two interface screws (3) are provided and are pulled on the tail end of each suture (2) respectively, and the two interface screws (3) and the wire anchor (1) are arranged in a triangle, so that a certain angle is formed between the two sutures (2); winding pieces, respectively arranged on the two suture threads (2), each of the winding pieces being provided with a plurality of holes (41) extending along its length direction; A covering suture (5), wherein two covering sutures (5) are provided and cross-wound in the hole (41) to form a cross-net structure, and the free ends of the two covering sutures (5) are wound around the corresponding interface screws (3); The winding member comprises a wire tube (4) sleeved on the suture thread (2), the wire tube (4) being formed by weaving elastic biocompatible material, and the holes (41) being pores naturally formed on the surface of the wire tube (4) after weaving.

2. The mesh suture anchor according to claim 1, characterized in that: The joining points between the compression suture (5) and the thread tube (4) are regularly staggered, and the joining points are distributed on both sides of the suture (2); or The joining points between the compression suture (5) and the wire tube (4) are arranged in an irregular scattered manner.

3. The mesh suture anchor according to claim 2, characterized in that: The joining point between the compression suture (5) and the wire tube (4) is located on the side of the wire tube (4) away from the implanted tissue; or the joining points between the compression suture (5) and the wire tube (4) are distributed on both sides of the wire tube (4).

4. The mesh suture anchor according to claim 1, characterized in that: The wire tube (4) is slidably arranged on the suture thread (2), and the length of the wire tube (4) is 2 / 3 to 3 / 4 of the length of the suture thread (2).

5. The mesh suture anchor according to claim 4, characterized in that: The wire tube (4) is conical, the diameter of the first end of the wire tube (4) is 2 mm to 3 mm, the diameter of the second end of the wire tube (4) is 3 mm to 4 mm, and the first end of the wire tube (4) is arranged close to the wire anchor (1).

6. The mesh suture anchor according to claim 1, characterized in that: The wire tube (4) and the pressure-coated suture (5) are integrally woven together, and the end of the pressure-coated suture (5) is fixed to the first end of the wire tube (4).

7. The mesh suture anchor according to claim 1, characterized in that: The winding member is a plurality of coils formed on the suture thread (2), each of the coils has a hole (41) and the coils are arranged along the length direction of the suture thread (2).

8. The mesh suture anchor according to any one of claims 1 to 7, characterized in that: The crossing angle of the two compression sutures (5) is set to 20°-30°.

9. The mesh suture anchor according to any one of claims 1 to 7, characterized in that: The angle between the two suture threads (2) is designed to be 30°-60°.

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