CN112353442B - An anchor system for rotator cuff injury repair - Google Patents

Abstract

The invention discloses an anchor system for repairing rotator cuff injury. The anchor system includes an anchor, a suture, a straight cylinder and a push rod. The anchor used for inserting the humeral head is provided with a threading hole and a square hole. For threading the suture, the square hole is used to cooperate with one end of the push rod. The push rod and the suture are all arranged in a straight cylinder for inserting into the gap between the humeral head and the acromion. When the push rod that pushes the anchor pushes the anchor out of the reversing portion, the direction in which the anchor is inserted into the humeral head deviates from the direction in which the straight barrel is inserted into the gap between the humeral head and the acromion. The method of use is to first make the end of the curved cylinder away from the straight cylinder facing the bone surface of the humeral head; then make the tip of the anchor against the tendon, and pierce the tendon with the tip of the anchor; then screw the anchor into the humeral head; The anchor and the suture remain on the humeral head. The invention can improve the pull-out resistance of the anchor.

Description

An anchor system for rotator cuff injury repair

technical field

The invention relates to the technical field of rotator cuff injury repair, in particular to an anchor system for rotator cuff injury repair.

Background technique

The rotator cuff is a group of tendon complexes surrounding the humeral head, including the subscapularis tendon, the supraspinatus tendon, the infraspinatus tendon, and the teres minor tendon. The rotator cuff plays an important role in maintaining the stability of the shoulder joint and the movement of the shoulder joint.

Rotator cuff injuries mostly refer to PASTA (partial articular surface tendon avulsion) injuries, which are commonly found on the supraspinatus tendon. For example, as shown in Figure 1, the tendon is attached to the humeral head. In a PASTA injury, as shown in Figure 2, the tendon is separated from the humeral head at the attachment portion.

In this regard, the attachment part of the tendon needs to be re-attached to the humeral head to achieve repair, and the repair needs to be placed on the humeral head where the tendon was originally attached. anchor), to lay the groundwork for the suture bridge technique, which uses sutures to press the tendon against the humeral head, allowing the tendon's attachment portion to rest against the humeral head for easy attachment of the tendon. The connecting part is reunited with the humeral head.

When setting up anchors with wire, you need to use the anchor system tool. As shown in FIG. 3 , the existing anchor system includes an anchor 1, a straight cylinder 2, a push rod 3, and a suture 4. The tail of the anchor 1 is provided with a threading hole 101 and a square hole 102. The suture 4 passes through the threading hole 101. Passing through, one end of the push rod 3 is inserted into the square hole 102 , and both the push rod 3 and the suture 4 are accommodated in the inner cavity of the straight cylinder 2 .

The method of using the anchor system is as follows: (1) Since the acromion is blocked above the humeral head to which the tendon is attached, the doctor needs to insert the straight tube 2 obliquely into the gap between the acromion and the humeral head, as shown in Figure 4. (2) After the straight barrel 2 is obliquely inserted into the acromion and the humeral head, use the sharp tip of the anchor 1 to pierce the tendon, and continue to feed the straight barrel 2 and the push rod 3 to the humeral head, as shown in Figure 5; (3) The doctor twists the push rod 3 and screw the anchor 1 into the humeral head, as shown in Figure 6; (4) Withdraw the handle, at this time only the anchor 1 with the suture 4 is left on the humeral head , as shown in Figure 7.

As shown in Figure 7, since the gap between the humeral head and the acromion is narrow, and the direction of the anchor insertion into the humeral head is the same as the direction in which the straight barrel is inserted into the space between the humeral head and the acromion, the direction L1 of pulling the anchor (pulling The direction of the anchor refers to the direction in which the suture is used to pull the anchor, which is also the direction in which the straight tube is inserted into the space between the humeral head and the acromion) and the direction L2 in which the anchor is inserted into the humeral head is almost parallel, thus reducing the resistance of the anchor. Pull out performance.

The weaker the pull-out resistance of the anchor, the easier it is to pull the anchor out of the humeral head, the weaker the force of the suture to press the tendon to the humeral head, and the less likely the attachment part of the tendon is against the humeral head. The attachment portion of the tendon is reunited with the humeral head. Once the anchor is removed from the humeral head, reoperation is required, delaying patient recovery and increasing medical costs.

Therefore, how to improve the pull-out resistance of the anchor is a technical problem to be solved urgently by those skilled in the art.

SUMMARY OF THE INVENTION

The present invention provides an anchor system for repairing rotator cuff damage in view of the above shortcomings of the prior art, and the invention can improve the pull-out resistance of the anchor.

For achieving the above object, the present invention provides following technical scheme one:

An anchor system for repairing rotator cuff injury, comprising an anchor, a suture, a straight cylinder and a push rod. The anchor used for inserting the humeral head is provided with a threading hole and a square hole, the threading hole is used for threading the suture, and the square hole is used for In order to cooperate with one end of the push rod, the push rod and the suture are all arranged in a straight cylinder for inserting into the gap between the humeral head and the acromion, and one end of the straight cylinder is provided with a reversing part. When the nail is pushed out of the commutator, the direction in which the anchor is inserted into the humeral head deviates from the direction in which the straight barrel is inserted into the space between the humeral head and the acromion.

Further, the reversing portion adopts a curved cylinder, and the curved cylinder is communicated with the straight cylinder, the anchor is provided with an external thread, and the push rod is an elastic rod.

A method for using an anchor system for rotator cuff injury repair, comprising the following steps:

(1) Insert the straight cylinder into the gap between the humeral head and the acromion, and rotate the straight cylinder so that the curved cylinder faces the bone surface of the humeral head at one end away from the straight cylinder;

(2) Push the anchor out of the curved cylinder with the push rod, so that the tip of the anchor is against the tendon, and the tip of the anchor is used to pierce the tendon;

(3) Rotate the push rod to screw the anchor into the humeral head;

(4) Withdraw the barrel and push rod, leaving the anchor and the suture on the humeral head.

The present invention provides the following technical scheme two:

An anchor system for repairing rotator cuff injury, comprising an anchor, a suture, a straight cylinder and a push rod. The anchor used for inserting the humeral head is provided with a threading hole and a square hole, the threading hole is used for threading the suture, and the square hole is used for In order to cooperate with one end of the push rod, the push rod and the suture are all arranged in a straight cylinder for inserting into the gap between the humeral head and the acromion, and one end of the straight cylinder is provided with a reversing part. When the nail is pushed out of the commutator, the direction in which the anchor is inserted into the humeral head deviates from the direction in which the straight barrel is inserted into the space between the humeral head and the acromion.

Further, the reversing portion adopts a limiting protrusion, the limiting protrusion is arranged in the inner cavity of the straight cylinder, the anchor is provided with a limiting groove, and the limiting groove cooperates with the limiting protrusion.

Further, the threading hole is provided at the tip of the anchor.

A method for using an anchor system for rotator cuff injury repair, comprising the following steps:

(1) Insert the straight cylinder into the gap between the humeral head and the acromion, push the anchor with the push rod until the limit protrusion slides into the limit groove of the anchor, and continue to push the anchor. rod to rotate the anchor around the limit protrusion until the tip of the anchor touches the tendon;

(2) Hit the push rod with a hammer so that the push rod pushes the anchor, allowing the anchor to pierce the tendon and drive into the humeral head;

(3) Withdraw the straight cylinder and push rod, leaving the anchor and suture on the humeral head.

Further, when the threading hole is provided at the tip of the anchor, between step (2) and step (3), the following operations need to be performed: while keeping the push rod to push the anchor, Pulling the suture outward deflects the tip of the anchor in the direction that the straight barrel withdraws from the space between the humeral head and the acromion.

Compared with the prior art, the beneficial effects of the invention are:

1. In the case of a narrow gap between the humeral head and the acromion, the anchor can be inserted into the humeral head in a direction deviating from the straight barrel inserted into the gap between the humeral head and the acromion, so that the anchor is inserted in the direction L2' of the bony surface of the humeral head. It is not parallel to the direction L1 of pulling the anchor, but has a certain angle a. Therefore, compared with the direction L1 in which the anchor is pulled out and the direction L2 in which the anchor is inserted into the humeral head in the background art, which are almost parallel, the present invention improves the pullout resistance of the anchor.

After improving the pullout resistance of the anchor, it can increase the difficulty of pulling the anchor out of the humeral head, increase the force of the suture to press the tendon to the humeral head, and make the attachment part of the tendon can be closely attached On the humeral head, the attachment portion that promotes the tendon rejoins the humeral head. The risk of the anchor being pulled out from the humeral head is reduced, and the success rate of the operation is improved, thereby reducing the chance of re-operation, avoiding delaying the recovery of patients, and saving medical costs.

In addition, because the present invention can weaken the influence of the acromion on the direction of the insertion of the anchor into the humeral head, that is, in the case of a narrow gap between the humeral head and the acromion, the anchor can still be inserted between the humeral head and the acromion with a deviated straight tube. The direction of the gap is screwed into the humeral head, so the present invention is especially suitable for the PASTA injury of the supraspinatus tendon.

2. No matter whether the present invention adopts the curved cylinder as the reversing part or the limiting protrusion as the reversing part, the anchor system for rotator cuff injury repair of the present invention has a simple structure, is easy to process, reduces the processing cost, and is convenient to use. operation, improve the success rate of surgery, reduce the level of requirements for the doctor's skills.

4. In the present invention, a threading hole is arranged at the tip of the anchor, so that after the anchor is inserted into the humeral head, the tip of the anchor can be deflected in the direction of the straight cylinder pulling out the gap between the humeral head and the acromion by pulling the suture, so that The included angle between the direction in which the anchor is inserted into the humeral head and the direction in which the anchor is pulled out is further increased, thereby further improving the effect of fixing the anchor in the humeral head and further improving the pull-out resistance of the anchor. Then, the attachment part of the tendon is further promoted to grow back together with the humeral head, which further improves the success rate of the operation and saves the medical cost.

5. The method of using an anchor system for repairing rotator cuff damage of the present invention can use the anchor system for repairing rotator cuff damage of the present invention to insert the anchor into the gap between the humeral head and the acromion with a deviated straight cylinder The direction of pulling out the anchor is not parallel to the direction in which the anchor is inserted into the bony surface of the humeral head, and the direction of pulling the anchor refers to the direction of pulling the anchor with the suture. Therefore, compared with the direction in which the anchor is pulled out and the direction in which the anchor is inserted into the humeral head in the background art is almost parallel, the present invention improves the pull-out resistance of the anchor.

After improving the pullout resistance of the anchor, it can increase the difficulty of pulling the anchor out of the humeral head, increase the force of the suture to press the tendon to the humeral head, and make the attachment part of the tendon can be closely attached On the humeral head, the attachment portion that promotes the tendon rejoins the humeral head. The risk of the anchor being pulled out from the humeral head is reduced, the success rate of the operation is improved, the probability of re-operation is reduced, the operation pain of the patient is reduced, and the medical cost is saved.

Description of drawings

Fig. 1 is the schematic diagram before background art PASTA is damaged;

Fig. 2 is the schematic diagram after background art PASTA is damaged;

3 is a schematic structural diagram of an anchor system in the background art;

4 is a schematic diagram 1 of the use of the anchor system in the background technology;

5 is a schematic diagram 2 of the use of the anchor system in the background technology;

6 is a schematic diagram three of the use of the anchor system in the background technology;

7 is a schematic diagram 4 of the use of the anchor system in the background technology;

8 is a schematic structural diagram 1 of an anchor system for repairing a rotator cuff injury in Example 1;

9 is a schematic structural diagram 2 of an anchor system for repairing a rotator cuff injury in Example 1;

10 is a schematic structural diagram three of an anchor system for repairing a rotator cuff injury in Example 1;

11 is a schematic diagram 1 of the use of an anchor system for repairing a rotator cuff injury in Example 1;

12 is a schematic diagram 2 of the use of an anchor system for repairing a rotator cuff injury in Example 1;

13 is a schematic diagram 3 of the use of an anchor system for rotator cuff injury repair in Example 1;

14 is a schematic diagram 4 of the use of an anchor system for repairing a rotator cuff injury in Example 1;

15 is a schematic structural diagram 1 of an anchor system for rotator cuff injury repair in Example 2;

FIG. 16 is a schematic structural diagram 2 of an anchor system for repairing a rotator cuff injury in Example 2;

17 is a schematic structural diagram 3 of an anchor system for repairing a rotator cuff injury in Example 2;

18 is a schematic diagram 1 of the use of an anchor system for repairing a rotator cuff injury in Example 2;

19 is a schematic diagram 2 of the use of an anchor system for rotator cuff injury repair in Example 2;

20 is a schematic diagram 3 of the use of an anchor system for rotator cuff injury repair in Example 2;

21 is a schematic diagram 4 of the use of an anchor system for repairing a rotator cuff injury in Example 2;

22 is a schematic diagram 5 of the use of an anchor system for repairing a rotator cuff injury in Example 2;

Figure 23 is a schematic diagram 6 of the use of an anchor system for repairing a rotator cuff injury in Example 2;

FIG. 24 is a schematic diagram of the use of an anchor system for rotator cuff injury repair in Example 3. FIG.

In the picture:

1-Anchor, 101-Threading hole, 102-Square hole, 103-Limiting groove, 2-Straight cylinder, 3-Push rod, 4-Suture thread, 5-Bending cylinder, 6-Limiting protrusion.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Example 1:

As shown in Figures 8-10, an anchor system for rotator cuff injury repair includes an anchor 1, a straight cylinder 2, a push rod 3, and a suture 4.

Anchor 1 is used to insert the humeral head. The outer surface of the anchor 1 is provided with external threads, and the tail end of the anchor 1 is provided with a threading hole 101 , and the threading hole 101 is used for threading the suture 4 . The rear end of the anchor 1 is also provided with a square hole 102 (the square hole 102 is a quadrangular prism hole). turn. In addition to the square hole 102, a triangular prism hole, a penta prism hole or a hexagonal prism hole can also be used instead. .

The straight tube 2 is used to insert into the gap between the humeral head and the acromion. One end of the straight cylinder 2 is provided with a reversing portion, and the reversing portion adopts a curved cylinder 5. The curved cylinder 5 and the straight cylinder 2 are integrally formed. The included angle b of the axis is 160-165°.

Both the push rod 3 and the suture 4 pass through the inner cavity of the straight cylinder 2 and the inner cavity of the curved cylinder 5 in sequence. The push rod 3 adopts an elastic rod. The push rod 3 is used to push the anchor 1 from the inner cavity of the straight cylinder 2 to the inner cavity of the curved cylinder 5 . Specifically, the push rod 3 adopts a titanium alloy rod with high strength, high toughness and obvious rebound. In addition, the push rod 3 in the background art can also be used directly, because the push rod 3 itself is in the shape of an elongated rod, and the elongated rod itself has good toughness and resilience. When the push rod 3 is used to push the anchor 1 along the straight cylinder 2 and the curved cylinder 5, because the push rod 3 has elasticity, when the end of the push rod 3 close to the anchor 1 is inserted into the curved cylinder 5, it can follow the curve of the curved cylinder 5. After turning and bending, when the push rod 3 is pulled out from the bending cylinder 5, the push rod 3 is restored. Also because the push rod 3 has elasticity, when the push rod 3 pushes the anchor 1 out of the curved cylinder 5 and the end of the push rod 3 close to the anchor 1 is still inserted into the inner cavity of the curved cylinder 5, the push rod 3 is rotated to push A part of the rod 3 inserted in the curved cylinder 5 also rotates, so as to drive the anchor 1 to rotate together.

A method for using an anchor system for rotator cuff injury repair, comprising the following steps:

(1) Insert the straight cylinder 2 into the gap between the humeral head and the acromion, and turn the straight cylinder 2 so that the curved cylinder 5 faces the bony surface of the humeral head at the end away from the straight cylinder 2.

(2) Push the anchor 1 out of the curved cylinder 5 with the push rod 3, so that the tip of the anchor 1 is against the tendon, as shown in Figure 11, and pierce the tendon with the tip of the anchor 1, as shown in Figure 12. Because in step (1), the end of the curved barrel 5 away from the straight barrel 2 faces the bone surface of the humeral head, so when the anchor 1 is pushed out from the curved barrel 5 by the push rod 3, the direction of the tip of the anchor 1 can be Consistent with the direction of the curved barrel 5, both face the bony surface of the humeral head, so that the tip of the anchor 1 can rest on the tendon, and the tip of the anchor 1 is oriented away from the straight barrel 2. Insert the gap between the humeral head and the acromion direction.

(3) Screw the push rod 3 to screw the anchor 1 into the humeral head, as shown in Figure 13. Because in step (2), the direction of the tip of the anchor 1 is deviated from the direction in which the straight cylinder 2 is inserted into the gap between the humeral head and the acromion, so when the push rod 3 is screwed, the anchor 1 can be screwed into the humeral head, Moreover, the direction in which the anchor 1 is screwed into the humeral head is also deviated from the direction in which the straight cylinder 2 is inserted into the gap between the humeral head and the acromion.

(4) Withdraw the straight cylinder 2 and the push rod 3, leaving the anchor 1 and the suture 4 on the humeral head, as shown in Figure 14.

Through the above process, we can know that:

In the case of a narrow gap between the humeral head and the acromion, because the anchor 1 can be pushed by the push rod 3 to move in the direction of the curved barrel 5, the end of the curved barrel 5 away from the straight barrel 2 faces the bone of the humeral head. When facing the humeral head, the anchor 1 can be screwed into the humeral head in a direction deviating from the straight cylinder 2 into the gap between the humeral head and the acromion, so that the direction L2' of the anchor 1 being inserted into the bony surface of the humeral head and the direction L1 of pulling the anchor 1 Not parallel, but with a certain angle a. Therefore, compared with the direction L1 in which the anchor 1 is pulled out and the direction L2 in which the anchor 1 is inserted into the humeral head in the background art, which are almost parallel, the anchor system for repairing rotator cuff injury in this embodiment 1 improves the performance of the anchor. 1 anti-pull-out performance.

After improving the pull-out resistance of the anchor 1, the difficulty of pulling the anchor 1 from the humeral head can be increased, and the force of the suture 4 to press the tendon to the humeral head can be increased, so that the attached part of the tendon can be tightly It rests on the humeral head, promoting the attachment of the tendon to re-grow with the humeral head. The risk of the anchor pin 1 being pulled out from the humeral head is reduced, and the success rate of the operation is improved, thereby reducing the probability of re-operation, avoiding delaying the recovery of the patient, and saving medical costs.

In addition, because the anchor system for rotator cuff injury repair of the present embodiment 1 can weaken the influence of the acromion on the direction in which the anchor 1 is inserted into the humeral head, that is, when the gap between the humeral head and the acromion is narrow, The anchor 1 can still be screwed into the humeral head in a direction deviating from the straight cylinder 2 into the gap between the humeral head and the acromion, so the anchor system for repairing a rotator cuff injury of the present embodiment 1 is especially suitable for the appearance of the supraspinatus tendon. In the case of PASTA injury.

Example 2:

As shown in Figures 15-17, an anchor system for rotator cuff injury repair includes an anchor 1, a straight cylinder 2, a push rod 3, and a suture 4.

The straight tube 2 is used to insert into the gap between the humeral head and the acromion. One end of the straight cylinder 2 is provided with a reversing portion, and the reversing portion adopts a limiting protrusion 6 , which is arranged in the inner cavity of the straight cylinder 2 , and the limiting protrusion 6 is integrally formed with the straight cylinder 2 .

Anchor 1 is used to insert the humeral head. The rear end of the anchor 1 is provided with a threading hole 101 , and the threading hole 101 is used for threading the suture 4 . The rear end of the anchor 1 is also provided with a square hole 102 (the square hole 102 is a quadrangular prism hole). turn. In addition to the square hole 102, a triangular prism hole, a pentagonal prism hole or a hexagonal prism hole can also be used instead. . The anchor 1 is further provided with a limit groove 103 , and the limit groove 103 is matched with the limit protrusion 6 .

Both the push rod 3 and the suture 4 are arranged in the inner cavity of the straight cylinder 2 . The push rod 3 is used to push the anchor 1 out of the inner cavity of the straight cylinder 2. When the push rod 3 pushes the anchor 1 to the end of the straight cylinder 2 with the limiting protrusion 6, the limiting protrusion 6 can slide into the anchor 1. In the limit groove 103, continue to push the push rod 3, because the limit protrusion 6 has been inserted into the limit groove 103, the anchor 1 will rotate around the limit protrusion 6, so that the orientation of the tip of the anchor 1 occurs. Change.

A method for using an anchor system for rotator cuff injury repair, comprising the following steps:

(1) As shown in Figure 18, insert the straight cylinder 2 into the gap between the humeral head and the acromion; push the anchor 1 with the push rod 3 until the limit protrusion 6 slides into the limit groove 103 of the anchor 1, as shown in As shown in Figure 19; continue to push the push rod 3 to make the anchor 1 rotate around the limiting protrusion 6 until the tip of the anchor 1 touches the tendon, as shown in Figure 20, at this time, the tip of the anchor 1 is facing It deviates from the direction in which the straight tube 2 is inserted into the gap between the humeral head and the acromion.

(2) Hit the push rod 3 with a hammer, so that the push rod 3 pushes the anchor 1, and let the anchor 1 pierce the tendon and drive it into the humeral head in a direction deviating from the straight tube 2 into the gap between the humeral head and the acromion, such as shown in Figures 21-22.

(3) Withdraw the straight cylinder 2 and the push rod 3, and leave the anchor 1 and the suture 4 on the humeral head, as shown in Figure 23.

Through the above process, we can know that:

In the case where the gap between the humeral head and the acromion is narrow, because of the setting of the limiting protrusion 6 and the setting of the upper limiting groove 103 of the anchor 1, when the push rod 3 is used to push the anchor 1, the anchor 1 can be wound around the anchor 1. The limiting protrusion 6 is rotated, so that the anchor 1 can be inserted into the humeral head in a direction deviating from the straight cylinder 2 into the gap between the humeral head and the acromion, so that the anchor 1 is inserted into the direction L2' of the bony surface of the humeral head and the anchor is pulled out. The direction L1 of the nail 1 is not parallel, but has a certain angle a. Therefore, compared with the direction L1 in which the anchor 1 is pulled out and the direction L2 in which the anchor 1 is inserted into the humeral head in the background art, which are almost parallel, the anchor system for repairing rotator cuff damage in this embodiment improves the performance of the anchor 1 pull-out resistance.

After improving the pull-out resistance of the anchor 1, the difficulty of pulling the anchor 1 from the humeral head can be increased, and the force of the suture 4 to press the tendon to the humeral head can be increased, so that the attached part of the tendon can be tightly It rests on the humeral head, promoting the attachment of the tendon to re-grow with the humeral head. The risk of the anchor pin 1 being pulled out from the humeral head is reduced, and the success rate of the operation is improved, thereby reducing the probability of re-operation, avoiding delaying the recovery of the patient, and saving medical costs.

In addition, because of the anchor system for rotator cuff injury repair of the present embodiment 2, the influence of the acromion on the direction in which the anchor 1 is inserted into the humeral head can also be weakened, that is, in the case where the gap between the humeral head and the acromion is narrow , the anchor 1 can still be screwed into the humeral head in a direction that deviates from the straight cylinder 2 and is inserted into the gap between the humeral head and the acromion, so the anchor system for rotator cuff injury repair of the present embodiment 2 is also suitable for the supraspinatus tendon. A case of PASTA injury occurs.

Example 3:

The third embodiment is the same as the second embodiment, the difference is that in the anchor system for rotator cuff injury repair of the third embodiment, the threading hole 101 is provided at the tip of the anchor 1 .

When the threading hole 101 is provided at the tip of the anchor 1, between steps (2) and (3) of Embodiment 2, the following operations are also required: while keeping the push rod 3 to push the anchor 1, outwards Pull the suture 4 to make the anchor 1 rotate counterclockwise with the contact position of the anchor 1 and the push rod 3 as the center of rotation, so that the tip of the anchor 1 is deflected toward the direction of the straight cylinder 2 to draw out the gap between the humeral head and the acromion, As shown in Figure 24.

Through the above process, we can know that:

In the third embodiment, on the basis of the second embodiment, by deflecting the tip of the anchor 1 in the direction in which the straight cylinder 2 is drawn out of the gap between the humeral head and the acromion, the anchor 1 can be inserted into the bony surface of the humeral head in the direction L2' The included angle a with the pull-out direction L1 of the anchor 1 is further reduced, thereby further improving the effect of fixing the anchor 1 on the humeral head and further improving the pull-out resistance of the anchor 1 . Then, the attachment part of the tendon is further promoted to grow back together with the humeral head, which further improves the success rate of the operation and saves the medical cost.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention. Thus, provided that these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims (2)

1. An anchoring nail system for repairing rotator cuff injury comprises an anchoring nail, a suture thread, a straight barrel and a push rod, wherein the anchoring nail used for being inserted into a humeral head is provided with a threading hole and a square hole, the threading hole is used for penetrating the suture thread, the square hole is used for being matched with one end of the push rod, and the push rod and the suture thread are both arranged in the straight barrel used for being inserted into a gap between the humeral head and a shoulder.

2. The anchor system for rotator cuff injury repair of claim 1, wherein said threadhole is provided at a tip end of said anchor.

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