Tendon ligament anchor and anchor fixing method

Abstract

According to the technical scheme, the tendon ligament anchor is characterized by comprising an anchor body and a fork-shaped anchor head, a communicating hole is formed in the rear end of the fork-shaped anchor head in the axial direction, a first line hole and a second line hole are formed in the two sides of the fork-shaped anchor head correspondingly, the first line hole and the second line hole communicate with the communicating hole, and the first line hole and the second line hole communicate with the communicating hole; a thread line is arranged on the outer wall of the screw body in the axial direction, and a first inserting hole and a second inserting hole are formed in the screw body in the axial direction. The invention has the following beneficial effects: a suture (a tendon fixing band) is inserted from the communicating hole, forms a line ring at the head of the forked nail head through the first line hole and the second line hole, and then extends out from the communicating hole, the end of a tendon to be fixed is sleeved in the line ring, the forked nail head is inserted into a bone tunnel on a bone, and the tightness of the line ring of the forked nail head is adjusted through the suture, so that the tendon can be fixed. After confirmation, the screw body can be screwed into the bone tunnel through the thread line, the tendon is extruded and fixed to the bone tunnel and abuts against the forked screw head, and the forked screw head is prevented from retreating.

Description

Technical Field

[0001] This invention relates to a medical anchor, and more specifically, to a tendon and ligament anchor and a method for anchor fixation. Background Technology

[0002] Tendons are composed of longitudinal bundles of fibers held together by loose connective tissue. Tendon rupture and defects are common, mostly caused by injury or disease. To restore limb function, ruptured or damaged tendons must be repaired promptly. Tendon suture surgery is a procedure that repairs and sutures a ruptured tendon to restore its function. During tendon suture surgery, holes are often drilled in the bone to create a bone tunnel. Anchors are inserted into the bone tunnel, and sutures (tendon fixation bands) are used to connect the tendon to the anchors, thus fixing the tendon to the bone. However, sutures are not very effective at fixing the tendon, making it difficult for the tendon to adhere to the bone, which is detrimental to recovery. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the present invention aims to provide a tendon and ligament anchor and an anchor fixation method, which can solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a tendon and ligament anchor, comprising a nail body and a forked nail head for insertion into a bone tunnel in the bone, wherein the nail body and the forked nail head are separately disposed, a connecting hole is provided at the rear end of the forked nail head along the axial direction, a first thread hole and a second thread hole are respectively provided on both sides of the forked nail head, both the first thread hole and the second thread hole are connected to the connecting hole, a threaded line is provided on the outer wall of the nail body along the axial direction, and a first insertion hole and a second insertion hole are provided on the nail body along the axial direction.

[0005] It also includes an inserter, the front end of which is provided with a first plug for inserting into a first socket and a second plug for inserting into a second socket.

[0006] The invention is further configured such that: the front end of the fork-shaped nail head is provided with an inwardly recessed fixing groove, and both sides of the fork-shaped nail head are arc-shaped.

[0007] The invention is further configured such that: a third wire hole and a fourth wire hole are respectively provided on both sides of the fixing groove, and barbs are provided on the arc-shaped ends of both sides of the fork-shaped nail head, with the two barbs respectively located between the first wire hole and the third wire hole and between the second wire hole and the fourth wire hole.

[0008] The present invention is further configured such that: a first connecting platform is provided at the rear end of the fork-shaped nail head along the axial direction, and a second connecting platform is provided at the front end of the nail body along the axial direction for abutting against the first connecting platform; the second connecting platform is tapered in shape with a pointed front and a thicker rear, and its outer diameter is smaller than the outer diameter of the thread.

[0009] The present invention is further configured such that: the rear end of the first connecting platform is provided with a connecting hole communicating with the connecting hole along the axial direction, and the front end of the second connecting platform is provided with a connecting rod for inserting into the connecting hole along the axial direction. The connecting rod is hollow and communicates with both the first and second insertion holes.

[0010] The invention is further configured such that both the first plug and the second plug have side grooves along their length for the thread to pass through.

[0011] The present invention is further configured such that, when in use, one end of the thread is connected to the inserter, and the other end of the thread passes through the first insertion hole, the connecting hole and the first thread hole in sequence. After the thread is looped to form a loop, it passes through the second thread hole, the connecting hole and the second insertion hole and is then connected to the inserter, so that the forked nail head and the nail body can be installed on the inserter.

[0012] After installation, loop the suture around the tendon that needs to be fixed, insert the forked pin into the pre-drilled bone tunnel, pull the two ends of the suture connected to the inserter, adjust the tightness of the loop, and confirm the tightness of the loop. Screw the pin into the bone tunnel, press against the forked pin to prevent it from coming out, and the pin will press the suture against the inner wall of the bone tunnel to fix it.

[0013] The invention is further configured such that: the inserter has a rod body, the first plug and the second plug are both located at the front end of the rod body, and a handle is also located at the rear end of the rod body.

[0014] The invention is further configured such that: a winding frame perpendicular to the rod body and used for winding one end of the sewing thread is fixedly connected to the rod body; a top rod parallel to the rod body is slidably connected to the handle; a first frame is fixedly connected to the winding frame; a top plate is provided at the rear end of the top rod; and a second frame parallel to the first frame is connected to the front end of the top rod.

[0015] The invention is further configured such that: a fixing frame for fixing the other end of the stitch is fixedly connected to the rod body, and the fixing frame is provided with a fixing plate and a plurality of elastic plates for attaching to the fixing plate.

[0016] In summary, this invention has the following beneficial effects: The suture (tendon fixation band) is inserted through the connecting hole, forming a loop at the head of the forked screw head via the first and second suture holes, and then extends out of the connecting hole. The end of the tendon to be fixed is fitted into this loop, and the forked screw head is inserted into the bone tunnel. The tightness of the loop is adjusted by the suture. Once confirmed, the screw body can be screwed into the bone tunnel via the threaded connection, compressing and fixing the tendon in the bone tunnel and holding the forked screw head in place to prevent it from coming out. Furthermore, the screw body compresses the ends of the suture loop against the inner wall of the bone tunnel, thereby fixing the tendon to the bone for easier postoperative recovery. The suture can also be knotted after suturing with soft tissue, reducing excess suture and achieving tendon fixation. The inserter connects to the screw body via a first plug inserted into a first socket and a second plug inserted into a second socket. The dual-bar connection is convenient and facilitates screwing the screw body into the bone tunnel. Attached Figure Description

[0017] Figure 1 A schematic diagram of the connection structure of tendon and ligament anchors and anchor fixation methods;

[0018] Figure 2 This is a schematic diagram of the structure of a fork-shaped nail head;

[0019] Figure 3 This is a schematic diagram of the nail body.

[0020] Figure 4 A schematic diagram of the connection structure between the nail body and the forked nail head;

[0021] Figure 5 This is a schematic diagram of the connection structure of the inserter;

[0022] Figure 6 This is a schematic diagram of the connection structure of the fixed frame. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0024] Reference Figure 1-6As shown, the tendon and ligament anchor includes a nail body 1 and a forked nail head 2 for insertion into a bone tunnel in the bone. The nail body 1 and the forked nail head 2 are separate components. The rear end of the forked nail head 2 has a connecting hole 21 along the axial direction. The two sides of the forked nail head 2 have a first thread hole 22 and a second thread hole 23, respectively, which communicate with the connecting hole 21. The outer wall of the nail body 1 has a threaded line 11 along the axial direction, and the nail body 1 has a first insertion hole 13 and a second insertion hole 14 along the axial direction.

[0025] It also includes an inserter 3, the front end of which is provided with a first plug 31 for inserting into the first socket 13 and a second plug 32 for inserting into the second socket 14.

[0026] In the above scheme, the suture 6 (tendon fixation band) is inserted through the connecting hole 21, forming a loop at the head of the forked screw head 2 via the first suture hole 22 and the second suture hole 23, and then extends out from the connecting hole 21. The end of the tendon to be fixed is fitted into this loop, and the forked screw head 2 is inserted into the bone tunnel. The tightness of the loop of the forked screw head 2 is adjusted by the suture 6. After confirmation, the screw body 1 can be screwed into the bone tunnel through the threaded line 11, compressing and fixing the tendon in the bone tunnel and holding the forked screw head 2 in place to prevent it from coming out. Moreover, the screw body 1 compresses the sutures at both ends of the loop of the suture 6 against the inner wall of the bone tunnel, thereby fixing the tendon to the bone for postoperative recovery. The suture can also be knotted after suturing with soft tissue to remove excess suture and achieve tendon fixation. The inserter 3 is inserted into the first socket 13 via the first plug 31 and into the second socket 14 via the second plug 32 to connect with the nail body 1. The dual-bar insertion is convenient to use and also facilitates the screw body 1 to be screwed into the bone tunnel.

[0027] As one specific implementation of the improvement, the front end of the fork-shaped nail head 2 is provided with an inwardly recessed fixing groove 24, and both sides of the fork-shaped nail head 2 are arc-shaped.

[0028] With the above method, the bone tunnel is drilled out, and its size can vary to some extent. This allows the fixing groove 24 to facilitate the inward bending of the forked screw head 2 when it is inserted into the bone tunnel, so that it can fit tightly against the inner wall of the bone tunnel. The arc shape facilitates the insertion of the forked screw head 2 into the bone tunnel.

[0029] As an improved specific implementation, the fixing groove 24 is provided with a third wire hole 25 and a fourth wire hole 26 on both sides, and the arc-shaped ends of the fork-shaped nail head 2 are provided with barbs 27. The two barbs 27 are respectively located between the first wire hole 22 and the third wire hole 25 and between the second wire hole 23 and the fourth wire hole 26.

[0030] Through the above scheme, the third suture hole 25 and the fourth suture hole 26 guide the suture 6 into the fixing groove 24 to form a suture loop, thereby maintaining the structure of the suture loop and facilitating the firm fixation of the tendon. The barbed stab 27 prevents the forked pin head 2 from retracting and maintains a certain gap for the suture 6 to pass through, avoiding compression of the fixing suture 6 and ensuring that the suture 6 can be pulled to adjust the size of the suture loop.

[0031] As an improved specific implementation, the rear end of the fork-shaped nail head 2 is provided with a first connecting platform 28 along the axial direction, and the front end of the nail body 1 is provided with a second connecting platform 12 along the axial direction for abutting against the first connecting platform 28. The second connecting platform 12 is tapered with a pointed front and a thicker rear, and its outer diameter is smaller than the outer diameter of the thread.

[0032] Through the above scheme, the first connecting platform 28 and the second connecting platform 12 can be easily connected by contact, and the nail body 1 can also squeeze and press the forked nail head 2 to maintain a stable connection. The conical shape can facilitate the insertion of the nail body 1 into the bone tunnel and also facilitate screwing in for fixation.

[0033] As an improved specific implementation, the rear end of the first connecting platform 28 is provided with a connecting hole 29 communicating with the connecting hole 21 along the axial direction, and the front end of the second connecting platform 12 is provided with a connecting rod 15 for inserting into the connecting hole 29 along the axial direction. The connecting rod 15 is hollow and communicates with both the first insertion hole 13 and the second insertion hole 14.

[0034] With the above solution, the connecting rod 15 is inserted into the connecting hole 29, making the forked nail head 2 and the nail body 1 firmly connected. Even when the nail body 1 tightly presses against the forked nail head 2, the position and angle of the forked nail head 2 can be kept fixed and not easily loosened. The connecting rod 15, the first insertion hole 13 and the second insertion hole 14 are connected, which can facilitate the passage of the sewing thread 6, reduce interference with the sewing thread 6, and facilitate the movement of the sewing thread 6.

[0035] As one specific embodiment of the improvement, both the first plug 31 and the second plug 32 are provided with side grooves 33 along the length direction for the sewing thread 6 to pass through.

[0036] With the above solution, the side groove 33 facilitates the passage and smooth movement of the sewing thread 6, preventing blockage and allowing for easy adjustment of the thread loop size.

[0037] As an improved specific implementation, when in use, one end of the suture 6 is connected to the inserter 3, and the other end of the suture 6 passes through the first insertion hole 13, the connecting hole 21 and the first thread hole 22 in sequence. After leaving the thread and making a loop to form a thread loop, it passes through the second thread hole 23, the connecting hole 21 and the second insertion hole and is connected to the inserter 3 so that the fork-shaped nail head 2 and the nail body 1 are installed on the inserter 3.

[0038] After installation, loop the suture 6 around the tendon that needs to be fixed, insert the forked nail head 2 into the pre-drilled bone tunnel on the bone, pull the two ends of the suture 6 connected to the inserter 3, adjust the tightness of the suture loop, and confirm the tightness of the suture loop. Screw the nail body 1 into the bone tunnel, press against the forked nail head 2 to prevent the forked nail head 2 from coming out, and the nail body 1 presses the suture 6 against the inner wall of the bone tunnel to fix it.

[0039] The above method connects the inserter 3, the forked screw head 2, and the screw body 1 via suture 6, facilitating gradual separation during use. Suture 6 connects the tendon and the forked screw head 2, while the screw body 1 fixes the forked screw head 2 within the bone tunnel, ensuring long-term retention and promoting postoperative recovery. The inserter 3 moves the forked screw head 2 and screw body 1, facilitating operation. After fixing the tendon to the bone, the ends of suture 6 can be removed for further tendon suturing or knotting to complete final tendon fixation.

[0040] As one specific embodiment of the improvement, the inserter 3 is provided with a rod body 34, with the first plug 31 and the second plug 32 both located at the front end of the rod body 34, and a handle 4 located at the rear end of the rod body 34.

[0041] With the above design, the handle 4 is easy to grip, and the rod 34 is easy to insert into the body for operation.

[0042] As an improved specific implementation, a winding frame 5 perpendicular to the rod body 34 and used for winding one end of the sewing thread 6 is also fixedly connected to the rod body 34. A top rod 41 parallel to the rod body 34 is slidably connected to the handle 4. A first frame 51 is fixedly connected to the winding frame 5. A top plate 42 is provided at the rear end of the top rod 41. A second frame 52 parallel to the first frame 51 is connected to the front end of the top rod 41.

[0043] With the above method, one end of the suture 6 is wound around the first frame 51 and the second frame 52. When the size of the suture loop is adjusted on the tendon, it can press against the top plate 42 and push forward, thereby driving the second frame 52 away from the first frame 51 and pulling one end of the suture 6, thereby reducing the size of the suture loop and securing the tendon. It is convenient to use and easy to operate.

[0044] As an improved specific implementation, a fixing frame 7 for fixing the other end of the sewing thread 6 is also fixedly connected to the rod body 34. The fixing frame 7 is provided with a fixing plate 71 and a plurality of elastic plates 72 for attaching to the fixing plate 71.

[0045] With the above scheme, the other end of the suture 6 can be clamped and fixed by a suitable elastic plate 72, or it can be further fixed by winding around the elastic plate 72, or even multiple elastic plates 72 can be selected for operation, thereby ensuring that it is firmly fixed, easy to remove, and easy to operate and adjust.

[0046] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A tendon ligament anchor comprising a shank (1), characterized in that: The forked nail head (2) is provided with a communication hole (21) at the rear end in the axial direction, and a first wire hole (22) and a second wire hole (23) are respectively arranged at the two sides of the forked nail head (2), and the first wire hole (22) and the second wire hole (23) are communicated with the communication hole (21), and a threaded line (11) is arranged on the outer wall of the nail body (1) in the axial direction, and a first insertion hole (13) and a second insertion hole (14) are arranged in the axial direction of the nail body (1), The inserter (3) is provided with a first plug (31) for inserting the first insertion hole (13) and a second plug (32) for inserting the second insertion hole (14) at the front end.

2. The tendon ligament anchor of claim 1, wherein: The front end of the forked nail head (2) is provided with an inwardly recessed fixing groove (24), and the two sides of the forked nail head (2) are arc-shaped.

3. The tendon ligament anchor of claim 2, wherein: The two sides of the fixing groove (24) are respectively provided with a third wire hole (25) and a fourth wire hole (26), and the arc-shaped end portions of the two sides of the forked nail head (2) are respectively provided with barbed hooks (27), and the two barbed hooks (27) are respectively arranged between the first wire hole (22) and the second wire hole (23) and between the third wire hole (25) and the fourth wire hole (26).

4. The tendon ligament anchor of claim 1 wherein: The rear end of the forked nail head (2) is provided with a first connecting table (28) in the axial direction, and the front end of the nail body (1) is provided with a second connecting table (12) for abutting against the first connecting table (28) in the axial direction, and the second connecting table (12) is tapered with a front sharp and a rear thick, and the outer diameter is smaller than the threaded outer diameter.

5. The tendon ligament anchor of claim 4, wherein: The rear end of the first connecting table (28) is provided with a connecting hole (29) communicated with the communication hole (21) in the axial direction, and the front end of the second connecting table (12) is provided with a connecting rod (15) for inserting the connecting hole (29) in the axial direction, and the connecting rod (15) is hollow and communicated with the first insertion hole (13) and the second insertion hole (14).

6. The tendon ligament anchor of claim 5, wherein: The first plug (31) and the second plug (32) are respectively provided with a side groove (33) for the suture (6) to pass through in the length direction.

7. The method of anchoring according to any of claims 1-6, wherein: When in use, one end of the suture (6) is connected to the inserter (3), the other end of the suture (6) is sequentially passed through the first insertion hole (13), the communication hole (21) and the first wire hole (22), and then passed through the second wire hole (23), the communication hole (21) and the second insertion hole, and then connected to the inserter (3) after the suture (6) is looped to form a wire ring, so as to install the forked nail head (2) and the nail body (1) on the inserter (3); After the installation is completed, the suture (6) is looped on the tendon to be fixed, the forked nail head (2) is inserted into the pre-formed bone tunnel on the bone, and the two ends of the suture (6) connected to the inserter (3) are pulled, the tightness of the wire ring is adjusted, the tightness of the wire ring is confirmed, the nail body (1) is screwed into the bone tunnel, the forked nail head (2) is pressed against the nail body (1), so as to prevent the forked nail head (2) from being withdrawn, and the nail body (1) extrudes the suture (6) on the inner wall of the bone tunnel to be fixed.

8. The method of anchoring according to claim 7, wherein: The inserter (3) is provided with a shank (34), the first plug (31) and the second plug (32) are both arranged at the front end of the shank (34), and a handle (4) is further arranged at the rear end of the shank (34).

9. The method of anchoring according to claim 8, wherein: A winding frame (5) for winding one end of the suture (6) is further fixedly connected to the shank (34) and is perpendicular to the shank (34), a top rod (41) parallel to the shank (34) is slidingly connected to the handle (4), a first frame (51) is fixedly connected to the winding frame (5), a top plate (42) is arranged at the rear end of the top rod (41), and a second frame (52) parallel to the first frame (51) is connected to the front end of the top rod (41).

10. The method of anchoring according to claim 8, wherein: A fixing frame (7) for fixing the other end of the suture (6) is further fixedly connected to the shank (34), and the fixing frame (7) is provided with a fixing plate (71) and a plurality of elastic plates (72) for being attached to the fixing plate (71).

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