Trapezoidal anchor and using method thereof

Abstract

The invention discloses a trapezoidal anchor and a using method thereof, and aims to provide a trapezoidal anchor which is improved in functionality and operation efficiency and convenient to adjust and a using method thereof. The nail body is provided with a threading hole, one end of the nail head is rotatably connected with one end of the nail body, the other end of the nail head is provided with a wire jacking groove, the wire jacking groove is connected with a wire fixing structure, the other end of the nail body is provided with a mounting groove, the mounting groove is connected with a reinforcing structure, the threading hole is provided with a locking ring with an opening, and the outer side face of the locking ring is connected with the hole wall of the threading hole. The inner side face of the locking ring is connected with a plurality of limiting protruding teeth, the limiting protruding teeth are evenly arranged around the inner wall of the locking ring, and the cross section of the nail body and the cross section of the nail head are both in a trapezoid shape. The invention has the following beneficial effects: the functionality of the anchor is enhanced; the use convenience and stability of the surgical suture are improved through the anchor nail; operation steps are simplified, operation difficulty is reduced, and operation efficiency is improved; structural strength and connection stability are improved to improve operation efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a trapezoidal anchor and a use method thereof. Background Art

[0002] Medical anchors are currently widely used in orthopedic clinics, especially for fixing the interface of tendons, ligaments and bones. They have the advantages of reliable fixation, minimally invasive, and simple operation. They solve the problems of difficult fixation of the interface of tendons, ligaments and bones and poor therapeutic efficacy, and greatly promote the development of minimally invasive orthopedics and arthroscopy. Anchors are usually used to bring wires into fixed points (wire ends) for fixation, or to fix the wire tails instead of knotting nodes.

[0003] Chinese Patent Authorization Announcement Number: CN 115245363 B, Authorization Announcement Date: September 5, 2023. The present invention relates to a wire anchor, which belongs to the field of medical devices. The wire anchor includes: an anchor body, a threading hole, a drug storage cavity and a drug release hole; the anchor body is a hollow structure, and an external thread is provided on the outer wall; the threading hole is provided at the front end of the anchor body and is connected to the inner cavity of the anchor body; the drug storage cavity is axially opened on the side wall of the anchor body, and the lower end of the drug storage cavity extends to the end of the anchor body; the drug release hole is radially opened on the side wall of the anchor body, and the drug release hole is connected to the upper end of the drug storage cavity. The shortcomings of this technical solution are: 1. The function of the anchor is single; 2. When the anchor is fixed as a wire tail, a guide wire instrument is required to pass the surgical suture through the anchor point first, which makes the surgical operation steps complicated and reduces the surgical efficiency; 3. When installing the anchor, it is easy to make the surgical suture between the anchor and the anchor point unable to be adjusted after the wire is fixed.

[0004] In summary, existing anchors have the disadvantages of single function, reduced surgical efficiency and difficulty in adjustment. Summary of the invention

[0005] The present invention aims to overcome the shortcomings of existing anchors in the prior art, such as single function, reduced surgical efficiency and difficulty in adjustment, and provides a trapezoidal anchor with improved functionality, surgical efficiency and easy adjustment and a method for using the anchor.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A trapezoidal anchor comprises a nail body and a nail head, wherein the nail body is provided with a threading hole, one end of the nail head is rotatably connected to one end of the nail body, the other end of the nail head is provided with a top wire groove, the top wire groove is connected to a wire fixing structure, the other end of the nail body is provided with a mounting groove, the mounting groove is connected to a reinforcement structure, the threading hole is provided with a locking ring with an opening, the outer side surface of the locking ring is connected to the hole wall of the threading hole, the inner side surface of the locking ring is connected to a limiting convex tooth, a plurality of limiting convex teeth are provided, and the limiting convex teeth are evenly arranged around the inner wall of the locking ring, and the cross-sectional shapes of the nail body and the nail head are both trapezoidal.

[0007] The anchor is composed of a nail body and a nail head. The nail body is provided with a threading hole, which can be used to connect with the end of the surgical suture bandage and fix it to the anchor point. The nail head is provided with a top thread groove, and the top thread groove is a special-shaped groove, which can be used to tie and fix the surgical suture bandage tail. The top thread groove and the threading hole can be used in combination, that is, to fix part of the surgical suture and to tie another part of the surgical suture, so that the anchor can be used more flexibly according to the needs of the anchor point or the type of suture fixation, thereby enhancing the functionality of the anchor; wherein, the nail head is connected to one end of the nail body The head is rotatably connected, and the nail head allows the surgical suture to enter the anchor point and support the anchor point through the top wire groove. In the operation of fixing the suture instead of tying the knot, the suture guide rail is saved from the need to bring the wire into and then fix the anchor nail. The wire and knot can be directly brought through the anchor nail, so that the nail body can be tied and fixed with the anchor point without affecting the nail head. The nail head and the suture connected to it remain relatively still without following the movement of the nail body, causing the surgical suture to twist in, and preventing the tension generated thereby from causing deformation of the anchor nail. On the other hand, the cross-sectional shapes of the nail body and the nail head are both approximately trapezoidal, making the anchor nail as a whole It is flat in shape, leaving gaps on both sides relative to the anchor point (circular drill hole), so that the surgical suture can be extended from the gap when used at the fixed point (connected to the surgical suture thread head), which is convenient for subsequent use and adjustment of the suture through the tissue, that is, simplifying the instruments and operating steps, while ensuring the stability of the two usage methods of anchor point fixation and tying; the top wire groove is a special-shaped groove, which cooperates with the wire fixing structure in the top wire groove to facilitate the entry of the suture and prevent the suture from falling out, so as to improve the threading efficiency and stability, thereby shortening the operation time; the installation groove is used to fix the nail body and the anchor nail when fixing the anchor nail. The connection point when the rotating instrument is connected allows the rotatable instrument to be inserted into the installation slot to drive the nail body to be fixed at the anchor point. A reinforcement structure is connected in the installation slot to further prevent the nail body from deforming or twisting at the stress point. The inner wall of the threading hole is connected with a number of uniform limiting convex teeth to further fix the surgical suture after positioning (under tension) through the limiting convex teeth to prevent the suture from shifting and loosening, thereby enhancing the suturing effect of the surgical suture. The limiting convex teeth are connected to the incomplete annular locking ring to improve the connection strength of the limiting convex teeth, and at the same time limit the length of the limiting convex teeth to locate the stress position of the threading. The effect of enhancing the functionality of the anchor nail, improving the fixing strength, improving the convenience and stability of the use of surgical sutures through the anchor nail, simplifying the surgical steps and improving the surgical efficiency is achieved.

[0008] Preferably, the groove wall on one side of the top wire groove near the groove opening is set as wire slope one, and the groove wall on the other side of the top wire groove near the groove opening is set as wire slope two, both of which are connected with the end face of the nail head, and the groove wall on one side of the top wire groove is connected with a convex tooth portion, the convex tooth portion and the nail head are an integrated structure, the wire slope one is connected with the convex tooth portion, and the wire slope two is connected with the groove wall on the other side of the top wire groove. The structure of the nail head is such that the outer side of the nail head gradually shrinks inward from one end close to the nail body toward one end close to the end face, so that the anchor nail can enter the anchor point more smoothly, and the unconnected end face of the nail head is connected with the wire slope 1 and wire slope 2 near the notch in the top wire groove, so that the end of the nail head is in an arc-shaped inward tilt, and a protruding structure is provided on one side of the groove surface of the top wire groove and is set as a convex tooth part. The convex tooth part and the nail head are an integrated structure and connected with the wire slope 1 at the same time, so that the surgical suture can smoothly enter the top wire groove along the wire slope 1 and is not easy to fall out, and the groove surface of the top wire groove opposite to the convex tooth part is connected with the wire slope 2, thereby further enhancing the smoothness of the surgical suture entering the top wire groove and reducing the difficulty of surgical micro-operation. The effect of reducing the difficulty of operation and improving the efficiency of surgery is achieved.

[0009] Preferably, the bottom of the top line groove is set as a line-contacting groove surface, and the cross-sectional shape and vertical cross-sectional shape of the line-contacting groove surface are both arc-shaped. The fixed line structure includes a connecting strip and a barb body. One side of the connecting strip is connected to the inner side wall of the convex tooth portion, and the connecting strip is connected to the line-contacting groove surface. There are several barbs, one end of the barb body is connected to the other side of the connecting strip, and the other end of the barb body is arranged toward the line-contacting groove surface. The bottom of the top line groove is set as a line-contacting groove surface, and the cross-sectional shape and vertical cross-sectional shape of the line-contacting groove surface are both arc-shaped, so that the four directions of the line-contacting groove surface are all arc-shaped, thereby reducing the moving resistance of the surgical suture and making the surgical suture smoother when tying; the connecting strip in the fixed structure is connected to the surface of the convex tooth portion in the top line groove, and the barbs are evenly arranged and connected to the surface of the connecting strip. At the same time, the barbs are arranged in the direction of the line-contacting groove surface to prevent the entry of the surgical suture from being blocked, and to prevent the surgical suture that has entered the top line groove and contacted with the line-contacting groove surface from falling out, causing the anchor nail to be unable to enter the line. This further improves the ability and stability of the anchor when tying the knot.

[0010] Preferably, the reinforcing structure includes a mounting column, which is plugged into the mounting slot and provided with a rotation slot. The mounting column, the mounting slot and the rotation slot are all polygonal column structures. The mounting column is connected to the mounting slot and connected to the control device through the rotation slot, so that the control device can insert and rotate the anchor. The mounting column connected by insertion ensures the force strength of the anchor when it is rotated by the controlled device during connection. At the same time, after installation, the mounting column can be pulled out of the mounting slot by friction, thereby taking out part of the anchor after completion to reduce the amount of anchor retained in the body, and improving the degree of fusion for anchors that need to fuse with bone fibers. The effect of ensuring the force strength of the anchor and improving the degree of fusion is achieved.

[0011] Preferably, the groove surface of the installation groove is provided with a slot, the installation column is connected with an insertion column, and the insertion column is inserted into the slot. By opening a slot in the groove wall of the installation groove, the amount of the anchor nail left in the human body can be further reduced. In addition, the torsion is usually achieved by docking the prismatic groove with the prismatic structure, but if the anchor nail is deformed, it is easy to cause rotation failure. However, by connecting the insertion rod with the slot, the anchor nail can be further prevented from "missing the target", and the connection strength and operation efficiency can be improved. The effect of improving the structural strength and connection stability to improve the operation efficiency is achieved.

[0012] Preferably, the end face of the nail body is provided with a rotation hole and a limit hole, the rotation hole and the limit hole are arranged vertically and connected, the nail head is provided with a rotation rod and a limit plate, one end of the rotation rod is connected to the nail head, the other end of the rotation rod is connected to the limit plate, the rotation rod is plugged into the rotation hole, and the limit plate is plugged into the limit hole. The end face of the nail body is plugged into the rotation rod through the rotation hole and the limit plate through the limit hole, and the rotation rod is connected to the limit plate, and then the nail head is connected to the end of the nail body and supported by the rotation, so that the nail head is stable. The effect of ensuring the stability of the structural connection and the smoothness of the operation is achieved.

[0013] Preferably, a pair of opposite sides of the nail body are arc-shaped and provided with threads, and another pair of opposite sides of the nail body are plane-shaped and provided with a clearance groove, and the clearance groove is provided with a movable plate, and one side of the movable plate is connected to the clearance groove. A pair of opposite sides of the nail body with a cross section approximately in a trapezoidal shape are arc-shaped and provided with threads, which are used for threaded connection with the anchor point, or for squeezing and fixing the surgical sutures. The other two sides of the nail body are plane-shaped to allow the surgical sutures to pass through, and a clearance groove is provided on the plane. Through the connection between the movable plate and the clearance groove, the movable plate moves on the clearance groove according to the force from the surgical sutures, and assists in squeezing the surgical sutures when the surgical sutures are stationary to improve the fixing effect. The effect of achieving fixation and connection and ensuring strong fixation is achieved.

[0014] Preferably, the movable plate is connected with a locking block, which is triangular in shape and is provided in a plurality of pieces. The locking block in the locking assembly is connected to the movable plate, and the triangular locking block reduces friction for the surgical sutures on both sides passing through the threading hole to facilitate adjustment, and is compressed when stationary, and the movable plate provides pressure support for the locking block, thereby further facilitating the use of surgical sutures.

[0015] A method for using a trapezoidal anchor, including surgical sutures, specifically comprises the following steps: Step 1: Connect one end of the surgical suture through the threading hole of the nail body, and screw the trapezoidal anchor nail into the anchor point to fix it; Step 2: Pass the other end of the surgical suture through the tendon tissue for suturing and pulling, and cut off part of the surgical suture to achieve initial fixation; Step 3: Insert another trapezoidal anchor through the top line groove into the remaining surgical suture and insert the nail head into another anchor point; Step 4: Connect the rotating trapezoidal anchor nail with the reinforcing structure in the installation slot through the instrument, so that the thread on the nail body is connected with the preset thread of the anchor point, and the surgical suture is fixed by the nail body; Step 5: Take out the instrument together with the reinforcement structure in the installation slot, cut off the thread ends and complete the surgical suture fixation through the trapezoidal anchor.

[0016] Taking tendon suturing as an example, the surgical suture is passed through the threading hole so that one end of the surgical suture is fixed by the anchor point thread on the lower bone surface of the tendon. The surgical suture passes through the gap between the nail body and the anchor point wall and passes through the tendon to be tightened. During the tightening, the surgical suture is tightly attached to the limiting convex teeth to prevent the surgical suture from shifting. The tightened part of the surgical suture is directly knotted on the tendon surface for preliminary fixation. Another trapezoidal anchor is sent in through an instrument, and the other surgical sutures are inserted into the top line groove of the nail head during the movement. This trapezoidal anchor is inserted into the new preset anchor point. The nail head brings the surgical suture into the anchor point and fixes it at the anchor point through the threaded connection of the nail body. The installation groove is taken out through the instrument, and the installation column and the plug column are taken out. The tail end of the surgical suture is cut off to complete the suturing. Other surgical sutures are fixed and cut in the above way to complete the all-round fixation of the tendon.

[0017] The beneficial effects of the present invention are: enhancing the functionality of the anchor; improving the convenience and stability of surgical sutures through the anchor; simplifying surgical steps, reducing operational difficulty and improving surgical efficiency; improving structural strength and connection stability to improve operational effectiveness; ensuring the stress strength of the anchor and improving fusion; improving the ability and stability of the anchor to directly feed the line when tying; and improving the fixing strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a stereogram of the present invention; Figure 2 yes Figure 1 Side view of Figure 3 yes Figure 2 A cross-sectional view of Figure 4 yes Figure 1 A top view of Figure 5 It is a structural diagram of the connection between the mounting column and the plug column; Figure 6 It is a structural schematic diagram of the connection between the locking ring and the limiting convex teeth.

[0019] In the figure: 1. nail body, 2. nail head, 3. threading hole, 4. top wire groove, 5. installation groove, 6. wire bevel 1, 7. wire bevel 2, 8. wire groove surface, 9. connecting strip, 10. barb body, 11. convex tooth part, 12. installation column, 13. limiting convex tooth, 14. rotating groove, 15. slot, 16. plug column, 17. rotating hole, 18. limiting hole, 19. rotating rod, 20. limiting plate, 21. thread, 22. give way groove, 23. movable plate, 24. locking block, 25. locking ring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0022] Unless otherwise specified, the relative arrangement of the components, numerical expressions and numerical values ​​described in these embodiments do not limit the scope of the present application. For ease of explanation, spatial relative terms such as "upper", "lower", "left", "right" are used in the embodiments to illustrate the relationship between an element or feature shown in the figure and another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be fixed "on" other elements or features. Therefore, the exemplary term "lower" can include both upper and lower orientations. The device can be fixed in other ways (rotated 90 degrees or located in other orientations), and the spatial relative description used here can be interpreted accordingly. At the same time, it should be understood that for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, process and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, process and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.It should be noted that similar reference numerals and letters denote similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0023] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0024] Embodiment 1: like Figure 1 , Figure 3 , Figure 6 As shown, a trapezoidal anchor comprises a nail body 1 and a nail head 2, the nail body 1 is provided with a threading hole 3, one end of the nail head 2 is rotatably connected to one end of the nail body 1, the other end of the nail head 2 is provided with a top wire groove 4, the top wire groove 4 is connected to a fixed wire structure, the other end of the nail body 1 is provided with a mounting groove 5, the mounting groove 5 is connected to a reinforcement structure, the threading hole 3 is provided with a locking ring 25 with an opening, the outer side surface of the locking ring 25 is connected to the hole wall of the threading hole 3, the inner side surface of the locking ring 25 is connected to a limiting convex tooth 26, a plurality of limiting convex teeth 26 are provided, and the limiting convex teeth 26 are evenly arranged around the inner wall of the locking ring 25, and the cross-sectional shapes of the nail body 1 and the nail head 2 are both trapezoidal.

[0025] like Figure 2 , Figure 3As shown, one side groove wall of the top wire groove 4 near the groove opening is set as a wire slope 1 6, and the other side groove wall of the top wire groove 4 near the groove opening is set as a wire slope 2 7. Both the wire slope 1 6 and the wire slope 2 7 are connected to the end surface of the nail head 2. One side groove wall of the top wire groove 4 is connected with a convex tooth portion 11. The convex tooth portion 11 and the nail head 2 are an integrated structure. The wire slope 1 6 is connected to the convex tooth portion 11, and the wire slope 2 7 is connected to the other side groove surface of the top wire groove 4.

[0026] like Figure 4 As shown, the bottom of the top wire groove 4 is set as a wire-adhering groove surface 8, and the cross-sectional shape and the vertical cross-sectional shape of the wire-adhering groove surface 8 are both arc-shaped. The wire fixing structure includes a connecting strip 9 and a barb body 10. One side of the connecting strip 9 is connected to the inner side wall of the convex tooth portion 11, and the connecting strip 9 is connected to the wire-adhering groove surface 8. A plurality of barbs 10 are provided, and one end of the barb body 10 is connected to the other side of the connecting strip 9, and the other end of the barb body 10 is arranged toward the wire-adhering groove surface 8.

[0027] like Figure 3 , Figure 4 , Figure 5 As shown, the reinforcement structure includes a mounting column 12, which is plugged into a mounting groove 13, and a rotation groove 14 is provided on the mounting column 12. The mounting column 12, the mounting groove 5 and the rotation groove 14 are all multi-prism structures. The groove surface of the mounting groove 5 is provided with a slot 15, and the mounting column 12 is connected to a plug column 16, which is plugged into the slot 15.

[0028] like Figure 2 , Figure 3 As shown, the end face of the nail body 1 is provided with a rotating hole 17 and a limiting hole 18, the rotating hole 17 and the limiting hole 18 are arranged vertically and connected, the nail head 2 is provided with a rotating rod 19 and a limiting plate 20, one end of the rotating rod 19 is connected to the nail head 2, and the other end of the rotating rod 19 is connected to the limiting plate 20, the rotating rod 19 is plugged into the rotating hole 17, and the limiting plate 20 is plugged into the limiting hole 18.

[0029] like Figure 1 , Figure 3 As shown, a pair of opposite side surfaces of the nail body 1 are arc-shaped and provided with threads 21, and another pair of opposite side surfaces of the nail body 1 are flat and provided with a clearance groove 22, and the clearance groove 22 is provided with a movable plate 23, and one side of the movable plate 23 is connected to the clearance groove 22. The movable plate 23 is connected to a locking block 24, and the structural shape of the locking block 24 is triangular, and a plurality of locking blocks 24 are provided.

[0030] like Figure 1-6 As shown: two paving grooves 22 are respectively provided on the two flat sides of the nail body 1, and the movable plates 23 are arranged up and down and two locking blocks 24 are connected on the surface, so that the surgical sutures are easier to fix.

[0031] The present application also includes a method for using a trapezoidal anchor, including a surgical suture, which specifically includes the following steps: Step 1: Pass one end of the surgical suture through the threading hole 3 of the nail body 1 and screw the trapezoidal anchor nail into the anchor point to fix it, so that the thread on the nail body 1 is connected with the preset thread of the anchor point; Step 2: Pass the other end of the surgical suture through the tendon tissue for suturing and pulling, and cut off part of the surgical suture to achieve initial fixation; Step 3: Place another trapezoidal anchor through the top line groove 4 to receive the remaining surgical sutures and insert the nail head 2 into another anchor point; Step 4: Rotate the trapezoidal anchor nail through the connection between the instrument and the reinforcement structure in the installation slot 5, so that the thread on the nail body 1 is connected with the preset thread of the anchor point, and the surgical suture is fixed by the nail body 1; Step 5: Take out the instrument together with the reinforcement structure in the installation slot 5, cut off the thread ends and complete the surgical suture fixation through the trapezoidal anchor nail.

[0032] Specific implementation method: Taking tendon suture as an example, the surgical suture is passed through the threading hole 3 so that one end of the surgical suture is fixed by the anchor point thread 21 on the lower bone surface of the tendon. The surgical suture passes through the gap between the nail body 1 and the anchor point wall and passes through the tendon to be tightened. During the tightening, the surgical suture is tightly attached to the limiting convex teeth 13 to prevent the surgical suture from shifting. The tightened part of the surgical suture is directly knotted on the tendon surface for preliminary fixation, and another trapezoidal anchor is sent in through an instrument, and other surgical sutures are inserted into the top line groove 4 of the nail head during movement. This trapezoidal anchor is inserted into the new preset anchor point, and the nail head 2 brings the surgical suture into the anchor point and is connected and fixed to the anchor point through the thread 21 of the nail body 1. The installation groove 5 is taken out through the instrument and the installation column 12 and the plug column 16 are taken out. The tail end of the surgical suture is cut off to complete the suturing. Other surgical sutures are fixed and cut in the above manner to complete the all-round fixation of the tendon.

[0033] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A trapezoidal anchor, characterized in that: The invention comprises a nail body (1) and a nail head (2), wherein the nail body (1) is provided with a threading hole (3), one end of the nail head (2) is rotatably connected to one end of the nail body (1), the other end of the nail head (2) is provided with a top wire groove (4), the top wire groove (4) is connected to a wire fixing structure, the other end of the nail body (1) is provided with a mounting groove (5), the mounting groove (5) is connected to a reinforcement structure, the threading hole (3) is provided with a locking ring (25) with an opening, the outer side surface of the locking ring (25) is connected to the hole wall of the threading hole (3), the inner side surface of the locking ring (25) is connected to a limiting convex tooth (26), a plurality of the limiting convex teeth (26) are provided, and the limiting convex teeth (26) are evenly arranged around the inner wall of the locking ring (25), and the cross-sectional shapes of the nail body (1) and the nail head (2) are both trapezoidal.

2. A trapezoidal anchor according to claim 1, characterized in that: A groove wall on one side of the top wire groove (4) near the groove opening is provided as a first conductor bevel (6), and a groove wall on the other side of the top wire groove (4) near the groove opening is provided as a second conductor bevel (7). Both the first conductor bevel (6) and the second conductor bevel (7) are connected to the end surface of the nail head (2). A groove wall on one side of the top wire groove (4) is connected to a convex tooth portion (11). The convex tooth portion (11) and the nail head (2) are an integrated structure. The first conductor bevel (6) is connected to the convex tooth portion (11), and the second conductor bevel (7) is connected to the groove wall on the other side of the top wire groove (4).

3. A trapezoidal anchor according to claim 2, characterized in that: The groove bottom of the top wire groove (4) is set as a wire-contacting groove surface (8), and the cross-sectional shape and vertical cross-sectional shape of the wire-contacting groove surface (8) are both arc-shaped. The wire fixing structure comprises a connecting strip (9) and a barb body (10), one side of the connecting strip (9) is connected to the inner side wall of the convex tooth portion (11), and the connecting strip (9) is connected to the wire-contacting groove surface (8). A plurality of barbs (10) are provided, one end of the barb body (10) is connected to the other side of the connecting strip (9), and the other end of the barb body (10) is arranged toward the wire-contacting groove surface (8).

4. A trapezoidal anchor according to claim 1, 2 or 3, characterized in that: The reinforcement structure comprises a mounting column (12), the mounting column (12) being plugged into the mounting groove (5), the mounting column (12) being provided with a rotation groove (14), and the mounting column (12), the mounting groove (5) and the rotation groove (14) are all polygonal columnar structures.

5. A trapezoidal anchor according to claim 4, characterized in that: The groove surface of the installation groove (5) is provided with a slot (15), the installation column (12) is connected with an insertion column (16), and the insertion column (16) is plugged into the slot (15).

6. A trapezoidal anchor according to claim 1, 2 or 3, characterized in that: The end surface of the nail body (1) is provided with a rotating hole (17) and a limiting hole (18), the rotating hole (17) and the limiting hole (18) are arranged vertically and communicated with each other, the nail head (2) is provided with a rotating rod (19) and a limiting plate (20), one end of the rotating rod (19) is connected to the nail head (2), the other end of the rotating rod (19) is connected to the limiting plate (20), the rotating rod (19) is plugged into the rotating hole (17), and the limiting plate (20) is plugged into the limiting hole (18).

7. A trapezoidal anchor according to claim 1, 2 or 3, characterized in that: A pair of opposite side surfaces of the nail body (1) are arc-shaped and provided with threads (21), and another pair of opposite side surfaces of the nail body (1) are plane-shaped and provided with a clearance groove (22). The clearance groove (22) is provided with a movable plate (23), and one side of the movable plate (23) is connected to the clearance groove (22).

8. A trapezoidal anchor according to claim 7, characterized in that: The movable plate (23) is connected to a locking block (24); the locking block (24) has a triangular structure and a plurality of locking blocks (24) are provided.

9. The method of using the trapezoidal anchor according to claim 1, comprising surgical sutures, characterized in that: The specific steps include: Step 1: Pass one end of the surgical suture through the threading hole (3) of the nail body (1) and connect it, screw the trapezoidal anchor nail into the anchor point and fix it, so that the thread on the nail body (1) is connected with the preset thread on the anchor point; Step 2: Pass the other end of the surgical suture through the tendon tissue for suturing and pulling, and cut off part of the surgical suture to achieve initial fixation; Step 3: Place another trapezoidal anchor through the top line groove (4) to receive the remaining surgical sutures and insert the nail head (2) into another anchor point; Step 4: Connect the rotating trapezoidal anchor nail through the instrument and the reinforcement structure in the mounting slot (5), so that the thread on the nail body (1) is connected with the preset thread of the anchor point, and the surgical suture is fixed by the nail body (1); Step 5: Take out the instrument together with the reinforcement structure in the installation slot (5), cut off the thread ends and complete the surgical suture fixation through the trapezoidal anchor.

Images