Outer row anchor

Abstract

The utility model provides an outer row anchor, and relates to the field of medical equipment. The outer row anchor comprises an anchor main body and a gasket main body, the anchor main body is provided with a first threading hole for a suture to penetrate through, and the anchor main body is used for being fixed in bone; the gasket body is provided with a second threading hole allowing a suture to penetrate through, the gasket body is connected with the anchor body, and at least part of the gasket body protrudes out of the peripheral face of the anchor body. By arranging the gasket main body, the suture can be prevented from being in direct contact with sclerotin, so that the probability that the suture cuts the sclerotin is reduced, and the situation that the suture loses tension and is gradually loosened due to the fact that the suture cuts the sclerotin is avoided.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, and in particular to an outer row anchor nail. Background Art

[0002] In sports medicine clinics, external row anchors are often used to fix broken soft tissues. Double row anchor technology allows the repaired soft tissue to have better contact and attachment to the bone. This technology has become a consensus and is widely used in the repair of rotator cuff repairs, talofibular ligaments, lateral collateral ligaments of the knee and elbow, and other injuries.

[0003] The inventors have found that the existing outer row anchors have at least the following disadvantages:

[0004] Due to osteoporosis or extremely high tension in patients, the sutures of the external row anchors are prone to cutting the bone during the fixation process during surgery, causing the sutures to sink and fixation to fail. Utility Model Content

[0005] The utility model aims to provide an outer row anchor nail, which can prevent the suture from directly contacting the bone, thereby reducing the probability of the suture cutting the bone, and is less likely to cause the suture to lose tension and gradually become loose due to the suture cutting the bone.

[0006] The embodiment of the utility model is achieved as follows:

[0007] In a first aspect, the utility model provides an outer row of anchors, comprising:

[0008] An anchor body and a gasket body, wherein the anchor body is provided with a first threading hole for threading a suture, and the anchor body is used to be fixed in the bone; the gasket body is provided with a second threading hole for threading the suture, the gasket body is connected to the anchor body, and at least part of the gasket body protrudes from the outer peripheral surface of the anchor body.

[0009] In an optional embodiment, the anchor body and the gasket body are configured as an integral structure.

[0010] Based on the above solution, the anchor body and the gasket body are firmly combined, and the step of adjusting the relative position of the anchor body and the gasket body is omitted during use, which is convenient to operate.

[0011] In an optional embodiment, the outer peripheral surface of the anchor body is provided with a plurality of inverted teeth for pressing into the patient's bone.

[0012] Based on the above scheme, when the anchor body is used to position the suture, the suture is inserted into the first threading hole and located on the outside of the anchor body, and the anchor body is pressed into the bone channel opened at the corresponding position of the patient's bone using a knocking tool. After the anchor body is pressed into the appropriate depth, multiple inverted teeth are used to cooperate with the bone to achieve position fixation, which is easy to operate. At the same time, when the anchor body is pressed into the bone channel, the suture can be brought into the bone channel together.

[0013] In an optional embodiment, an anti-pullout wing is provided on the outer peripheral surface of the anchor body.

[0014] Based on the above scheme, by setting anti-pullout wings, the anti-pullout wings are pressed into the bone canal together with the anchor body. After entering the bone canal, the anti-pullout wings can expand outwards due to the squeezing of the anchor body, thereby generating stronger anti-pullout force and enhancing the firmness of the anchor body and the bone.

[0015] In an optional embodiment, the outer row anchors also include an internal fastening bolt; an internal threaded hole connected to the first threading hole is provided in the anchor body, the internal fastening bolt is screwed and fixed to the internal threaded hole, and the internal fastening bolt cooperates with the anchor body to clamp the suture passed through the first threading hole.

[0016] Based on the above scheme, after the suture enters the bone canal under the drive of the anchor body, since the suture is not clamped by the anchor body and the bone, the suture can be pulled as needed to adjust the tension of the suture, and the tightness of the suture can be adjusted to the optimal state. Then, the internal fastening bolt is screwed into the internal threaded hole of the anchor body, and the end of the internal fastening bolt cooperates with the bottom wall of the internal threaded hole of the anchor body. The two clamp the suture to lock the position of the suture, and the tension of the suture is always maintained in the adjusted state, thereby improving the quality of the operation.

[0017] In an optional embodiment, there are multiple second threading holes, and the multiple second threading holes are arranged at intervals in the circumferential direction of the gasket body.

[0018] Based on the above solution, by providing a plurality of second threading holes, the plurality of second threading holes can be respectively matched with sutures of different types or at different positions, thereby expanding the scope of use.

[0019] In an optional embodiment, the anchor body and the gasket body are configured as a split structure, and the gasket body is attached to the end of the anchor body that has not entered the bone.

[0020] Based on the above solution, the anchor body and the gasket body are independent of each other and are processed separately, which reduces the processing difficulty and improves the processing quality.

[0021] In an optional embodiment, a threading notch is provided on the side of the gasket body, and the threading notch is connected to the second threading hole.

[0022] Based on the above scheme, when positioning the anchor body and the gasket body with the bone, the implanter must first be used to position the anchor body and the gasket body. The implanter is inserted into the anchor body and the gasket body, which occupies a large amount of space, resulting in a small space between the gasket body and the implanter, and it is not convenient for the suture to be directly inserted into the second threading hole of the gasket body. However, due to the design of the threading notch, the above problem is effectively improved, that is, the suture can directly enter the second threading hole from the threading notch, without having to pass through the space formed by the gasket body and the implanter from one side of the gasket body and then pass out from the other side of the gasket body, which greatly reduces the difficulty of suture threading and improves operation efficiency.

[0023] In an optional embodiment, a positioning groove is provided on the gasket body, and the positioning groove is used to clamp the suture and limit the freedom of the suture in the circumferential direction of the second threading hole; the positioning groove and the threading notch are spaced apart in the circumferential direction of the second threading hole.

[0024] Based on the above scheme, after the suture enters the second threading hole of the gasket body from the threading notch, the suture moves in the circumferential direction of the second threading hole to the position of the positioning groove, the suture and the positioning groove are snap-fitted, the suture is locked in the circumferential position of the second threading hole, and the position of the suture relative to the anchor body is stable. When the suture is brought into the bone canal using the anchor body, the position of the suture on the outside of the bone canal is stable and not easy to change, which is conducive to subsequent use.

[0025] In an optional embodiment, the anchor body includes a split threaded body and a threading body, the threaded body is provided with an external thread groove for screwing into bone, and the first threading hole is provided on the threading body; the threading body is plugged into and fitted with an end of the threaded body for screwing into bone, and the first threading hole is located outside the threaded body.

[0026] Based on the above scheme, after the suture is inserted into the first threading hole and the second threading hole at the same time, the threading body is first inserted into the bone channel, and then the threaded body is aligned with the bone channel. The threaded body is driven to rotate by the implanter, and the threaded body rotates relative to the bone channel while the external thread groove on it is screwed with the inner wall of the bone channel. During the rotation of the threaded body, it can move toward the bottom of the bone channel and finally reach the set depth. At the same time, the suture is locked under the compression of the threaded body and the bone channel, and the gasket body is pressed at the end of the bone channel under the action of the suture.

[0027] The beneficial effects of the embodiments of the utility model are:

[0028] To summarize, the external row anchor provided in the present embodiment, by using the anchor body in conjunction with the gasket body, the anchor body can be inserted into the bone canal to achieve the positioning of the suture and the bone canal, and the suture passes through the second threading hole on the gasket body after passing through the anchor body, and the suture and the bone near the bone canal port are blocked by the gasket body, and the suture does not directly contact the bone after passing through the anchor body, thereby improving the situation in which the suture has a small contact area when it is in direct contact with the bone surface, and the suture cuts the bone after the anchor body is implanted, causing the originally tensioned suture to lose tension and gradually become loose. In this way, after the suture is positioned in the bone canal by the anchor body, the tension is long-lasting and it is not easy to fail, which can improve the success rate of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 This is a schematic diagram of the outer row of anchors of Example 1 of the utility model;

[0031] Figure 2 This is a schematic diagram of a first deformation of the outer row of anchors of Example 1 of the utility model;

[0032] Figure 3 For the corresponding Figure 2 Side view of

[0033] Figure 4 This is a schematic diagram of a second deformation of the outer row of anchors of Example 1 of the utility model;

[0034] Figure 5 For the corresponding Figure 4 Side view of

[0035] Figure 6 This is a schematic diagram of a third deformation of the outer row of anchors of Example 1 of the utility model;

[0036] Figure 7 For the corresponding Figure 6 Side view of

[0037] Figure 8 This is a schematic diagram of a fourth deformation of the outer row of anchors of Example 1 of the utility model;

[0038] Fig. 9 For the corresponding Figure 8 Side view of

[0039] Fig.10 This is a schematic diagram of a fifth deformation of the outer row of anchors of Example 1 of the utility model;

[0040] Fig.11 For the corresponding Fig.10 Side view of

[0041] Fig.12 This is a schematic diagram of the application of the outer row of anchors in Example 1 of the utility model;

[0042] Fig.13 This is a schematic diagram of the operation of the outer row of anchors in Example 1 of the utility model;

[0043] Fig.14 This is a schematic diagram of the application of the outer row of anchors in Example 2 of the utility model;

[0044] Fig.15 This is a schematic diagram of the threaded body of the outer row anchor bolt of Example 2 of the utility model;

[0045] Fig.16 This is a schematic diagram of the threading body of the outer row anchor nails of Example 2 of the utility model;

[0046] Fig.17 This is a schematic diagram of the gasket body of the outer row of anchors of Example 2 of the utility model;

[0047] Fig.18 This is a schematic diagram of the operation of the outer row of anchor nails in Example 2 of the utility model.

[0048] icon:

[0049] 001-implanter; 002-suture; 100-anchor body; 101-first threading hole; 110-inverted teeth; 120-anti-pullout wing; 130-smooth hole; 140-internal threaded hole; 150-threaded body; 160-threading body; 161-insertion shaft; 162-conical head; 200-gasket body; 201-second threading hole; 202-threading notch; 203-positioning groove; 300-internal fastening bolt. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0051] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0053] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0054] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0055] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In the prior art, when anchors are used to position suture 002 inside the bone, a bone channel is first opened at the corresponding position of the bone, and the depth of the bone channel is roughly consistent with the depth of the anchor. The anchor is inserted into the bone channel to position suture 002 in the bone channel. Usually, multiple anchors are required for use in conjunction, so multiple anchors are connected in series by suture 002. After suture 002 passes through an anchor, it needs to pass through the bone before passing into another anchor. When suture 002 passes through or enters the anchor, suture 002 is in direct contact with the end of the bone channel, and the contact area is small. Suture 002 is easy to cut the bone, causing suture 002 to sink and fail, reducing the quality of the repair surgery.

[0057] In view of this, the designer provides an outer row of anchors, which can improve the situation where the suture 002 cuts the bone, causing the suture 002 to sink and fail to fix.

[0058] Please combine Figure 1 In this embodiment, the outer row anchor includes an anchor body 100 and a gasket body 200. The anchor body 100 is provided with a first threading hole 101 for the suture 002 to pass through, and the anchor body 100 is used to be fixed in the bone; the gasket body 200 is provided with a second threading hole 201 for the suture 002 to pass through, the gasket body 200 is connected to the anchor body 100, and at least a part of the gasket body 200 protrudes from the outer peripheral surface of the anchor body 100.

[0059] Based on the above solution, the working principle of the outer row anchors provided in this embodiment is as follows:

[0060] By using the anchor body 100 in conjunction with the gasket body 200, the anchor body 100 can be inserted into the bone canal to achieve the positioning of the suture 002 and the bone canal, and the suture 002 passes through the second threading hole 201 on the gasket body 200 after passing through the anchor body 100, and the suture 002 and the bone near the bone canal port are blocked by the gasket body 200. After passing through the anchor body 100, the suture 002 does not directly contact the bone, which improves the small contact area when the suture 002 directly contacts the bone surface. After the anchor body 100 is implanted into the bone canal, the suture 002 cuts the bone, causing the originally tensioned suture 002 to lose tension and gradually become loose. In this way, after the suture 002 is positioned in the bone canal by the anchor body 100, the tension is long-lasting and it is not easy to fail, which can improve the success rate of the operation.

[0061] It should be understood that during actual operation, one or more sutures 002 can be positioned in the first threading hole 101 and the second threading hole 201 .

[0062] The following embodiments illustrate the detailed structure of the outer row of anchors provided in the present application by way of examples.

[0063] Example 1

[0064] Please combine Figure 1 In this embodiment, the outer row anchors include an anchor body 100, a gasket body 200 and an inner fastening bolt 300. The anchor body 100 and the gasket body 200 are arranged as an integrated structure. The inner fastening bolt 300 is screwed with the anchor body 100, and the two cooperate to clamp the risk. The anchor body 100 has a front end and a rear end relative to each other. The front end is used to enter the bone canal first, and the rear end is exposed outside the bone canal or is basically flush with the bone canal port. A first threading hole 101 for the suture 002 to pass through is arranged near the front end of the anchor body 100, and the first threading hole 101 is arranged perpendicular to the anchor body 100. A second threading hole 201 for the suture 002 to pass through is arranged on the gasket body 200. The gasket body 200 is connected to the anchor body 100. The gasket body 200 is located at the rear end of the anchor body 100, and at least part of the gasket body 200 protrudes from the outer peripheral surface of the anchor body 100.

[0065] Optionally, a plurality of inverted teeth 110 are provided on the outer peripheral surface of the anchor body 100, and the plurality of inverted teeth 110 are arranged at intervals in the axial and circumferential directions of the anchor body 100. When the anchor body 100 is pressed into the corresponding bone canal by the implanter 001, the plurality of inverted teeth 110 are engaged with the inner wall of the bone canal to achieve fixed cooperation between the anchor body 100 and the bone, and prevent the anchor body 100 from withdrawing from the bone canal.

[0066] Furthermore, anti-pullout fins 120 are provided on the outer peripheral surface of the anchor body 100. The length of the anti-pullout fins 120 is greater than the length of the inverted teeth 110. The anti-pullout fins 120 can be provided in one row or multiple rows. Multiple anti-pullout fins 120 in the same row are arranged at intervals in the axial direction of the anchor body 100, and multiple rows of anti-pullout fins 120 are arranged at intervals in the circumferential direction of the anchor body 100. By adding the anti-pullout fins 120, the firmness of the anchor body 100 in cooperating with the bone canal after being pressed into the bone canal can be improved, and the anchor body 100 can be further restricted from withdrawing from the bone canal.

[0067] Optionally, the tail end of the anchor body 100 is provided with a smooth hole 130 and an internal threaded hole 140, the port of the smooth hole 130 is located on the end surface of the tail end, the cross-sectional shape of the smooth hole 130 can be non-circular, for example, the smooth hole 130 can be square, etc., and a step is formed at the connection position between the smooth hole 130 and the internal threaded hole 140, and the step can cooperate with the implanter 001, so that the anchor body 100 is pressed into the bone channel through the implanter 001. The internal threaded hole 140 extends along the axial direction of the anchor body 100 and is connected to the first threading hole 101 that passes through the anchor body 100. The internal fastening bolt 300 is screwed and fixed with the internal threaded hole 140, and the internal fastening bolt 300 can be screwed into the internal threaded hole 140 and cooperate with the hole wall of the first threading hole 101 to clamp the suture 002, so that the suture 002 is fixed relative to the first threading hole 101, that is, after the suture 002 is clamped, the suture 002 will not loosen.

[0068] In order to improve the clamping effect, anti-skid patterns are provided on the end surface of the inner fastening bolt 300, and the anti-skid patterns contact the suture 002 to increase the friction. It should be understood that anti-skid patterns can also be provided on the hole wall of the first threading hole 101, which can also improve the fastening effect of the suture 002.

[0069] In the present embodiment, optionally, a plurality of second threading holes 201 are provided on the gasket body 200. For example, in the present embodiment, two second threading holes 201 are provided on the gasket body 200. The two second threading holes 201 are respectively located on both sides of the anchor body 100 and are arranged in a centrally symmetrical manner. In this way, the gasket body 200 can simultaneously prevent the suture 002 from directly contacting the bone when passing in and out, thereby improving the protective effect.

[0070] Please combine Figure 2-Figure 11 It should be understood that when the number of the second threading holes 201 on the gasket body 200 is one, one or more rows of anti-pullout fins 120 can be configured on the anchor body 100, or, when the number of the second threading holes 201 on the gasket body 200 is two, one or more rows of anti-pullout fins 120 can be configured on the anchor body 100.

[0071] It should be noted that the anchor body 100 is inserted into the bone canal by means of an inserter, and the inserter may refer to the existing known structure. In order to avoid repeated description, the structure and use principle of the inserter are not described in detail in this embodiment.

[0072] Please combine Figure 12-13 The following provides a practical application operation method of the outer row anchor nails of this embodiment, for example:

[0073] 1. Use a suitable opener to open a bone channel at the location where the anchor needs to be implanted in the shoulder joint, forming a bone channel with a diameter and depth that matches the anchor body 100;

[0074] 2. Place the suture 002 into the traction ring of the wire puller, and pull the wire puller to make the suture 002 to be pressed pass through the anchor body 100 and the gasket body 200;

[0075] 3. Tap the tail of the implanter 001 to drive the anchor body 100 into the bone canal. Stop tapping when the tail of the anchor body 100 is flush with the bone surface.

[0076] 4. Adjust the suture 002 to make it tight, lock the suture 002 with the inner fastening bolt 300, and then rotate the ratchet knob of the implanter 001 clockwise until it makes a slipping sound;

[0077] 5. Remove implant 001 and complete the surgical operation.

[0078] Example 2

[0079] Please combine Figure 14-18 In this embodiment, the outer row anchor includes an anchor body 100 and a gasket body 200, and the anchor body 100 and the gasket body 200 are arranged as a split structure. The anchor body 100 is provided with a first threading hole 101 for the suture 002 to pass through, and the anchor body 100 is used to be fixed in the bone. The gasket body 200 is provided with a second threading hole 201 for the suture 002 to pass through, and the gasket body 200 is fitted with the tail end face of the anchor body 100, and at least part of the gasket body 200 protrudes from the outer peripheral surface of the anchor body 100.

[0080] In this embodiment, optionally, the anchor body 100 includes a split threaded body 150 and a threading body 160, the outer peripheral surface of the threaded body 150 is provided with an external thread groove for screwing with bone, the threaded body 150 is a hollow structure, that is, the threaded body 150 is provided with a through hole extending in its axial direction, and part of the through hole is set as a non-circular hole, which is conducive to the cooperation with the implanter 001 through the non-circular hole, that is, the implanter 001 can be plugged with the non-circular hole, driving the threaded body 150 to rotate, so that the threaded body 150 is screwed and fixed with the bone channel by the external thread groove thereon, for example, the non-circular hole can be a square hole or a hexagonal hole. At the same time, the threading body 160 is set as a stepped structure, and the threading body 160 includes an integrated insertion shaft 161 and a conical head 162, one end of the insertion shaft 161 is located on the end face of the cylindrical head with a larger diameter, and the first threading hole 101 is set on the conical head 162, and the first threading hole 101 is set perpendicular to the axis of the conical head 162. It should be understood that a threading hole can also be provided on the insertion shaft 161. When the threaded body 150 is matched with the threading body 160, the insertion shaft 161 of the threading body 160 is inserted into the through hole of the threaded body 150, and the larger end surface of the conical head 162 of the threading body 160 abuts against the end surface of the threaded body 150, limiting the depth of the insertion shaft 161 into the through hole. When the threading body 160 is plugged into the threaded body 150, the first threading hole 101 on the threading body 160 is located outside the threaded body 150.

[0081] Optionally, the side of the gasket body 200 is provided with a threading notch 202 connected to the second threading hole 201, and the threading notch 202 can guide the suture 002 into the second threading hole 201. It should be understood that after the gasket body 200 and the threaded body 150 are positioned by the implanter 001, when in the implanted state, the gasket body 200 is located above the threaded body 150, and the gasket body 200 always abuts against the tail end face of the threaded body 150 under its gravity. In this way, part of the second threading hole 201 is closed by the tail end face, and the suture 002 cannot be directly inserted into the second threading hole 201, or when one end of the suture 002 is inserted from one side of the second threading hole 201 and then passed out from the second threading hole 201, it is not convenient for the suture 002 to pass over the area between the gasket body 200 and the tail end face due to the influence of the gravity of the gasket body 200, and it is difficult for the suture 002 to be directly inserted. Therefore, by setting the threading notch 202, the situation can be greatly improved. That is, the suture 002 can directly enter the second threading hole 201 from the threading notch 202, and force is applied to the suture 002 so that it has a tendency to move in the circumferential direction of the second threading hole 201. The suture 002 can be easily slid between the gasket body 200 and the tail end face of the threaded body 150, thereby reducing the difficulty of threading and improving the efficiency of the operation.

[0082] Furthermore, a positioning groove 203 is provided on the gasket body 200. The positioning groove 203 may be an annular groove. The positioning groove 203 is used to clamp the suture 002 and limit the freedom of the suture 002 in the circumferential direction of the second threading hole 201. At the same time, the positioning groove 203 and the threading notch 202 have a spacing in the circumferential direction of the second threading hole 201. After the suture 002 enters the second threading hole 201 of the gasket body 200 from the threading notch 202, the suture 002 moves in the circumferential direction of the second threading hole 201 to the position of the positioning groove 203. The suture 002 is clamped and matched with the positioning groove 203. The position of the suture 002 in the circumferential direction of the second threading hole 201 is locked. The position of the suture 002 relative to the anchor body 100 is stable. When the suture 002 is brought into the bone canal by using the anchor body 100, the position of the suture 002 outside the bone canal is stable and not easy to change, which is conducive to subsequent use.

[0083] It should be understood that in order to improve the structural strength of the gasket body 200 and prevent the gasket body 200 from being too large and occupying too much space, the portion of the gasket body 200 where the positioning groove 203 is provided is widened.

[0084] The following provides a practical application operation method of the outer row anchor nails of this embodiment, for example:

[0085] The suture 002 enters the second threading hole 201 at the threading notch 202 and slides into the positioning groove 203; after adjusting the tension of the suture 002, the anchor body 100 is inserted into the bone canal until the threading body 160 located at the front end of the implanter 001 reaches the bottom of the bone canal, and the handle of the implanter 001 is rotated. At this time, the inner rod of the implanter 001 screws the threaded body 150 into the bone canal, and the insertion shaft 161 is inserted into the threaded body 150 and the threading body 160 abuts against the threaded body 150. In this process, the gasket body 200 also falls down as the anchor body 100 is screwed into the bone canal under the action of gravity. In the process of screwing the threaded body 150, the force clamping the suture 002 in the bone canal is greater. As the tension of the suture 002 becomes greater and greater, the gasket body 200 is also pressed against the bone surface.

[0086] The outer row anchor provided in this embodiment has the suture 002 passing through the anchor body 100 and then through the second threading hole 201 on the gasket body 200. The gasket body 200 separates the suture 002 from the port position of the bone canal. The suture 002 does not directly contact the bone and is not easy to cut the bone. It is not easy for the suture 002 to cut the bone and cause tension loosening and fixation failure. The outer row anchor has a good fixation effect and a high success rate of the operation.

[0087] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An outer row anchor, characterized in that: include: An anchor body (100) and a gasket body (200), wherein the anchor body (100) is provided with a first threading hole (101) for a suture (002) to pass through, and the anchor body (100) is used to be fixed in bone; the gasket body (200) is provided with a second threading hole (201) for the suture (002) to pass through, the gasket body (200) is connected to the anchor body (100), and at least a portion of the gasket body (200) protrudes from the outer peripheral surface of the anchor body (100).

2. The outer row anchor according to claim 1, characterized in that: The anchor body (100) and the gasket body (200) are arranged as an integral structure.

3. The outer row anchor according to claim 2, characterized in that: The outer peripheral surface of the anchor body (100) is provided with a plurality of inverted teeth (110) for pressing into the patient's bone.

4. The outer row anchor according to claim 2, characterized in that: The outer peripheral surface of the anchor body (100) is provided with an anti-pulling wing (120).

5. The outer row anchor according to claim 2, characterized in that: The outer row anchor also includes an internal fastening bolt (300); an internal threaded hole (140) communicating with the first threading hole (101) is provided in the anchor body (100); the internal fastening bolt (300) is screwed and fixed to the internal threaded hole (140); the internal fastening bolt (300) cooperates with the anchor body (100) to clamp the suture (002) passed through the first threading hole (101).

6. The outer row anchor according to claim 1, characterized in that: The number of the second threading holes (201) is plural, and the plurality of second threading holes (201) are arranged at intervals in the circumferential direction of the gasket body (200).

7. The outer row anchor according to claim 1, characterized in that: The anchor body (100) and the gasket body (200) are arranged as a split structure, and the gasket body (200) is fitted to the end of the anchor body (100) that has not entered the bone.

8. The outer row anchor according to claim 7, characterized in that: A threading notch (202) is provided on the side of the gasket body (200), and the threading notch (202) is connected to the second threading hole (201).

9. The outer row anchor according to claim 8, characterized in that: The gasket body (200) is provided with a positioning groove (203), and the positioning groove (203) is used to clamp the suture (002) and can limit the freedom of the suture (002) in the circumferential direction of the second threading hole (201); the positioning groove (203) and the threading notch (202) are spaced apart in the circumferential direction of the second threading hole (201).

10. The outer row anchor according to claim 7, characterized in that: The anchor body (100) comprises a split threaded body (150) and a threading body (160); the threaded body (150) is provided with an external thread groove for screwing with bone, and the first threading hole (101) is provided on the threading body (160); the threading body (160) is plugged into the end of the threaded body (150) for screwing into bone, and the first threading hole (101) is located outside the threaded body (150).

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