Wing Anchors and Inserters

Abstract

The present invention provides a wing-shaped anchor and an inserter, which relate to the technical field of medical devices. The wing-shaped anchor comprises a nail body for being knocked into a part to be treated, the nail body comprises a head and a tail, the tail is provided with a threading hole, the head is conical, the outer wall of the nail body is provided with a guide groove which is concave inward and extends along the length direction, and the outer wall is provided with a plurality of wing arms, and the angle between the wing arms and the nail body can be changed. The conical tail of the present invention is convenient for being knocked into the part to be treated, and the guide groove can accommodate a positioning needle, so that the precise positioning of the nail body can be achieved without the aid of instrument observation, and the wing arm can increase the anti-pullout force because of the angle between the wing arm and the nail body, thereby overcoming the defect of the limited holding force of the traditional screw.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a wing-shaped anchor and an inserter. Background Art

[0002] Soft tissues such as ligaments, tendons and muscles are attached to much of the human skeleton. Specifically, many ligaments and tendons are attached to bones to form joints, such as the shoulder and knee joints. A variety of injuries and conditions require the attachment or reattachment of soft tissue to bones. For example, when otherwise healthy tissue is torn away from a bone, surgery is often required to reattach the tissue to the bone to allow healing and natural reattachment.

[0003] A variety of devices and methods have been developed to attach soft tissue to bone, including, for example, screws, staples, cements, suture anchors, and separate sutures. Proper attachment of soft tissue to bone requires placement in an anatomically correct position to promote optimal healing, and surgical procedures are now classified as either traumatology or sports medicine arthroscopic surgery.

[0004] For surgery in the trauma department, it is necessary to first make a 5-10 cm incision at the lesion to expose the injured area, and then implant a spiral anchor with wire in the bone surface opening. Generally, more than 2 anchors need to be sutured. The sutures of the anchors are sutured through the torn soft tissue, and then the sutures are knotted and fixed, and then the incised wound is sutured.

[0005] Arthroscopic surgery in sports medicine is a procedure in which the physician makes an opening at an approximate location based on experience and in accordance with human anatomy. The opening should be larger than 1 cm to achieve positioning and place the arthroscopic probe device. Depending on the surgical procedure, more than three openings may need to be made. The rotator cuff avulsion site is found based on arthroscopic observation. First, a drill, opener, and tap are used to pre-open holes in the bone at the avulsion stop point. Wire anchors are then implanted in sequence. A threader is used to pass the soft tissue. The cable is passed through the threader and pulled out through another access channel using a wire grasper. The suture to be sutured is then put on the cable. The tail of the cable is pulled to pass the suture through the soft tissue. Repeat the above method to allow all the sutures on the anchor to pass through the soft tissue. A knot pusher is used to sew and tie the sutures, and the incised wound is sutured.

[0006] During surgical repair in the trauma department, the injured area is exposed for repair. The healing time of large openings is long, and surgical scars will be left after surgery. Sports medicine arthroscopic surgery is difficult to operate through multiple approaches, and many tools are needed to assist in suturing. Suture management is very difficult, and the sutures need to be passed back and forth from different approaches, which can easily cause sutures to be pulled out due to operational errors. Whether it is trauma surgery or sports medicine arthroscopic surgery, the screws used need to be drilled and then implanted. The screws are spiral and inverted triangle, and the interference fit with the bone is about 0.3mm. The screw holding force is limited. At the same time, when the screws are implanted, they need to be accurately positioned with the help of instruments for observation. Summary of the invention

[0007] In view of this, one of the purposes of the present invention is to provide a wing-shaped anchor to solve the technical problems in the prior art that whether it is trauma surgery or sports medicine arthroscopic surgery, the screws used need to be drilled and then implanted, the screws are spiral and inverted triangular, and the interference fit with the bone is about 0.3mm, resulting in limited holding force of the screws. At the same time, when implanted, the screws need to be accurately positioned with the help of instruments for observation.

[0008] A second object of the present invention is to provide an inserter containing a wing-shaped anchor.

[0009] In order to achieve one of the above-mentioned purposes, the present invention provides a wing-shaped anchor nail, including a nail body for being hammered into a part to be treated, the nail body including a head and a tail, the tail being provided with a threading hole, the head being conical, the outer wall of the nail body being provided with a guide groove which is recessed inward and extends along the length direction, and a plurality of wing arms being provided on the outer wall, and the angle between the wing arms and the nail body being changeable.

[0010] Optionally, the nail body further includes a connecting portion, which is columnar, and the head portion and the tail portion are disposed on opposite sides of the connecting portion and are integrally formed with the connecting portion.

[0011] Optionally, the tail portion is columnar and has a diameter smaller than a radius of the connecting portion, and the threading hole is arranged along the radial direction of the tail portion.

[0012] Optionally, the guide groove extends along the head portion, the connecting portion and the tail portion in sequence.

[0013] Optionally, an oblique section is provided on a side of the outer wall of the head opposite to the guide groove along the extension direction of the head.

[0014] Optionally, the outer wall of the nail body is provided with accommodating channels corresponding to the number of the wing arms and used to accommodate the wing arms, and the accommodating channels extend along the length direction of the nail body.

[0015] Optionally, one end of the accommodating channel is a strip groove, the strip groove is connected to the accommodating channel, and the strip groove is located in the connecting part, and the other end of the accommodating channel is an elliptical groove, the elliptical groove is connected to the accommodating channel, and the elliptical groove is located in the head.

[0016] Optionally, an extrusion area for extruding the wing arm is provided on the outer wall of the connecting portion and located between the strip groove and the elliptical groove.

[0017] Optionally, the wing arm is bent.

[0018] In order to achieve the second objective, the present invention provides an inserter, comprising any of the wing-shaped anchors described above, and also comprising a rod body and a handle having the same number as the wing-shaped anchors, wherein the wing-shaped anchor is arranged at one end of the rod body, the handle is arranged at the other end of the rod body, and a slot is provided on the handle;

[0019] The handle is also provided with a limit lock, and when one of the rods is pushed forward by the handle, the limit lock is used to prevent the other rod from moving forward.

[0020] The wing-shaped anchor provided by the present invention has the following technical effects:

[0021] This wing-shaped anchor is mainly composed of a nail body, which can be directly hammered into the part to be treated. The nail body includes a head and a tail, the tail is provided with a threading hole, the head is conical, and the outer wall of the nail body is provided with a guide groove which is recessed inward and extends along the length direction. At the same time, a plurality of wing arms are provided on the outer wall, and the angle between the wing arms and the nail body can be changed. The conical tail of the present invention is convenient for being hammered into the part to be treated, and the guide groove can accommodate a positioning needle, so that the precise positioning of the nail body can be achieved without the aid of instruments. In addition, since the wing arms have an angle with the nail body, the pull-out resistance can be increased, thereby overcoming the defect of limited holding force of traditional screws.

[0022] The inserter provided by the present invention has the following technical effects:

[0023] The inserter comprises a wing-shaped anchor, a rod body and a handle, wherein the handle is located at one end of the rod body, and the wing-shaped anchor is located at the other end of the rod body. The rod body comprises a plurality of wing-shaped anchors, and the number of the wing-shaped anchors is the same as that of the rod body. The handle is provided with a card slot, and the handle is also provided with a limit lock. When one of the rod bodies is pushed forward by the handle, the limit lock is used to prevent the other rod body from moving forward. When the inserter is used for treatment, a complete suture can pass through the threading holes of a plurality of wing-shaped anchors at the same time, and the wing-shaped anchors are connected in series to complete the suturing. The end of the suture is fixed on the card slot of the handle. After the wing-shaped anchor is implanted, it is separated from the rod body, and the end of the suture is exposed outside the part to be treated. No knot pusher is required for suturing and knotting. That is, the connection between the wing-shaped anchors of the present invention does not need to pass through the access channel to complete the suturing, that is, bone implantation, soft tissue suturing, and knotting between sutures are completed in one step. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a three-dimensional structural schematic diagram of a preferred embodiment of the wing-shaped anchor nail of the present invention;

[0026] Figure 2 yes Figure 1 Another schematic diagram of the three-dimensional structure of the middle wing-shaped anchor;

[0027] Figure 3 yes Figure 1 Front view of the middle wing anchor;

[0028] Figure 4 yes Figure 1 Side view of the middle wing anchor;

[0029] Figure 5 yes Figure 4 Cross-sectional view of the middle wing anchor along the AA direction;

[0030] Figure 6 Contains Figure 1 Schematic diagram of the three-dimensional structure of the inserter of the middle wing anchor;

[0031] Figure 7 yes Figure 6 a side view of the inserter;

[0032] Figure 8 yes Figure 6 Schematic diagram of the internal structure of the inserter;

[0033] Fig. 9 yes Figure 6 Usage state diagram of the inserter in .

[0034] in, Figure 1-Figure 9 :

[0035] 1. Wing-shaped anchor; 11. Head; 111. Oblique section; 112. Elliptical groove; 12. Connecting part; 121. Extrusion area; 122. Strip groove; 13. Tail; 131. Threading hole; 14. Accommodating channel; 15. Wing arm; 16. Guide groove;

[0036] 2. Rod body; 3. Handle; 31. Slot; 32. Engaging piece; 33. T-shaped sleeve; 4. Limit locking piece; 5. Suture. DETAILED DESCRIPTION

[0037] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0038] As described in the background technology, in the prior art, whether it is trauma surgery or sports medicine arthroscopic surgery, the screws used need to be drilled and then implanted. The screws are spiral and inverted triangular, and the interference fit with the bone is about 0.3mm. The holding force of the screws is limited. At the same time, when the screws are implanted, they need to be accurately positioned with the help of instruments for observation.

[0039] Below in conjunction with specific embodiments 1-2 and attached Figure 1-8 The technical solution of the present invention is described in detail.

[0040] Embodiment 1:

[0041] This embodiment provides a wing-shaped anchor 1, such as Figure 1-5 As shown, the wing-shaped anchor nail 1 comprises a nail body, which is hammered into a part to be treated, such as soft tissue, when in use.

[0042] Specifically, Figure 1-4As shown, the nail body includes a head 11, a connecting portion 12 and a tail 13, which are arranged in sequence from bottom to top and are integrally formed, for example, the head 11, the connecting portion 12 and the tail 13 are injection molded at one time to obtain the nail body. The head 11 is conical, preferably conical, and the conical head 11 is easy to be knocked into the part to be treated; the connecting portion 12 is preferably cylindrical, which is consistent with the maximum diameter of the conical head 11; and the tail 13 is also preferably cylindrical, and its diameter is smaller than the diameter of the connecting portion 12.

[0043] like Figure 1-3 As shown, the tail portion 13 is provided with a threading hole 131 , which is preferably elliptical, and the inner wall of the elliptical threading hole 131 is smooth, so that when the suture 5 passes through, the friction with the inner wall of the threading hole 131 can be reduced.

[0044] It also includes a guide groove 16, which is located on the outer wall of the nail body, recessed inwardly and extending along the length direction of the nail body, specifically extending along the head 11, the connecting portion 12 and the tail 13 in sequence. Since the head 11 is a cone, and the connecting portion 12 and the tail 13 are both columnar, the edge of the guide groove 16 located at the head 11 is a slant line, and the edges of the guide groove 16 located at the connecting portion 12 and the tail 13 are straight lines.

[0045] In order to reduce the difficulty of knocking in the head 11, Figure 1 and Figure 2 As shown, in this embodiment, an oblique cut surface 111 is further provided on the outer wall of the head 11 . The oblique cut surface 111 is located on a side opposite to the guide groove 16 and extends along the length direction of the head 11 .

[0046] In addition, it also includes wing arms 15, such as Figure 1-3 As shown, the wing arm 15 is installed on the outer wall of the connecting portion 12, and a V-shaped structure is formed between the wing arm 15 and the nail body. The angle of the V-shaped structure can be changed. The changeable angle here means that when the nail body is gradually knocked into the part to be treated, the angle between the wing arm 15 and the nail body can change slightly as the nail body goes deeper, and the wing arm 15 prevents the nail body from being easily pulled out, that is, the V-shaped structure formed between the wing arm 15 and the connecting portion 12 of the nail body has a greater pull-out resistance than that of a conventional spiral screw.

[0047] It should be noted that the wing arm 15 of this embodiment includes more than one, for example, it may include two, or three, or more. The specific number depends on the actual situation, and the present invention does not limit this. At the same time, the shape of the wing arm 15 is preferably a bending type, and the bending angle is greater than 90 degrees.

[0048] Specifically, in order to realize the installation and fixation of the wing arm 15 on the nail body, as shown in FIG. Figure 1 , Figure 3 and Figure 4 As shown, the outer wall of the nail body of this embodiment is provided with accommodating channels 14 for accommodating the wing arms 15. The number of the accommodating channels 14 corresponds to the number of the wing arms 15, and the accommodating channels 14 extend along the length direction of the nail body.

[0049] The accommodating channel 14 is a channel that can accommodate the wing arm 15, which is located between the connecting portion 12 and the head 11 of the nail body. One end of the accommodating channel 14 is a strip groove 122, which extends downward from the top of the connecting portion 12 and is connected to the accommodating channel 14 in the middle. The other end of the accommodating channel 14 is an elliptical groove 112, which is located on the outer wall of the conical head 11 and is recessed inwardly. The elliptical groove 112 is also connected to the accommodating channel 14.

[0050] As well as Figure 2 As shown, an extrusion area 121 is provided on the outer wall of the connecting portion 12 and between the strip groove 122 and the elliptical groove 112. The extrusion area 121 can fix the wing arm 15 in the accommodating channel 14. The extrusion area 121 of this embodiment is preferably rectangular.

[0051] Embodiment 2:

[0052] The present embodiment provides an inserter, comprising the wing-shaped anchor 1 in the embodiment 1, and also comprising a rod body 2 and a handle 3. The handle 3 is provided with a slot 31. The handle 3 is located at one end of the rod body 2. The rod body 2 can move forward relative to the handle 2. The wing-shaped anchor 1 is located at the other end of the rod body 2. The wing-shaped anchor 1 is detachably connected to the rod body 2, that is, after the wing-shaped anchor 1 is implanted in the part to be treated, it can be separated from the rod body 2. The present embodiment realizes the forward movement of the rod body 2 by applying force to the handle 3.

[0053] Specifically, the rod body 2 of this embodiment includes two rods, and the ends of the two rod bodies can be detachably mounted with the wing-shaped anchor nails 1, such as Figure 6-9 As shown, two rod bodies 2, one long and one short, are arranged side by side, wherein the end of the short rod body 2 is installed inside the handle 3, and the end of the long rod body 2 passes through the handle 3 and extends to the outside of the handle 3. The end of the short rod body 2 is provided with a clamping piece 32, and the end of the long rod body 2 is provided with a T-shaped sleeve 33 and a limit lock 4. The T-shaped sleeve 33 is partially placed outside the handle 3 and partially placed inside the handle 3. The end placed inside the handle 3 is fixed on the clamping piece 32, and the long rod body 2 passes through the inner cavity of the T-shaped sleeve 33. The limit lock 4 is also sleeved on the T-shaped sleeve 33 placed outside the handle.

[0054] like Figure 8As shown, when two wing-shaped anchors 1 are implanted, the handle 3 is moved forward to push the long rod 2 to the part to be treated. At this time, due to the presence of the T-shaped sleeve 33 and the limit lock 4, the short rod 2 will not move forward, so that the long rod 2 is separated from the wing-shaped anchor 1, and force is applied backward to pull the long rod 2 backward; switch the position, continue to drive the handle 3 forward, and manually remove the limit lock 4, press the T-shaped sleeve 33, and the short rod 2 carrying the wing-shaped anchor 1 is inserted into the part to be treated, so that the short rod 2 is separated from the wing-shaped anchor 1, thereby achieving the purpose of implanting two wing-shaped anchors 1.

[0055] The specific usage process is:

[0056] For cases of rotator cuff avulsion, such as Fig. 9 As shown, firstly, the torn soft tissue is grasped back to the stop point with a grasping forceps, and positioned with two small positioning needles, and then fixed and repaired with an inserter, and the guide groove 16 of the first wing-shaped anchor 1 is knocked in along the positioning needle, and the positioning needle is taken out after the first wing-shaped anchor 1 is implanted, and then the second wing-shaped anchor 1 is implanted. The implantation method of the second wing-shaped anchor 1 is the same as the implantation method of the first wing-shaped anchor 1. After the same wing-shaped anchor 1 is implanted, the positioning needle also needs to be taken out, and the suture 5 of this embodiment passes through the threading holes 131 of the two wing-shaped anchors 1 at the same time, and the end of the suture 5 is placed in the slot 31 of the handle 3, and finally the end of the suture 5 is squeezed and fixed at the distal end of the bone with an outer row of screws, thereby realizing knotless suturing, which realizes the advantages of no need to cross the line and no need to tie a knot, that is, the connection between the wing-shaped anchors 1 of this embodiment does not need to pass through the access channel to complete the suturing, and bone implantation, soft tissue suturing, and knotting between sutures 5 are completed in one step.

[0057] In the description of the present invention, it should be noted that, unless otherwise specified, "multiple" means two or more than two; the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0058] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0059] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An inserter, comprising a rod body and a handle, characterized in that: It also includes a wing-shaped anchor nail, which is arranged at one end of the rod body, and the handle is arranged at the other end of the rod body, and a slot is provided on the handle; The wing-shaped anchor nail comprises a nail body for being hammered into a part to be treated, the nail body comprises a head and a tail, the tail is provided with a threading hole, the head is cone-shaped, the outer wall of the nail body is provided with a guide groove which is inwardly concave and extends along the length direction, and the outer wall is provided with a plurality of wing arms, and the angle between the wing arms and the nail body can be changed; The rod bodies include two rods, and the ends of the two rod bodies can be detachably mounted with the wing-shaped anchor nails. The two rod bodies are arranged side by side, one long and one short, wherein the end of the short rod body is mounted inside the handle, and the end of the long rod body passes through the handle and extends to the outside of the handle. A clamping piece is provided at the end of the short rod body, and a T-shaped sleeve and a limit lock are provided at the end of the long rod body. The T-shaped sleeve is partially placed outside the handle and partially placed inside the handle, and the end placed inside the handle is fixed on the clamping piece, the long rod body passes through the inner cavity of the T-shaped sleeve, and a limit lock is also provided on the T-shaped sleeve placed outside the handle. When one of the rod bodies is pushed forward by the handle, the limit lock is used to prevent the other rod body from moving forward.

2. The inserter according to claim 1, characterized in that The nail body also includes a connecting portion, which is columnar. The head portion and the tail portion are arranged on opposite sides of the connecting portion and are integrally formed with the connecting portion.

3. The inserter according to claim 2, characterized in that The tail portion is columnar, and its diameter is smaller than the radius of the connecting portion, and the threading hole is arranged along the radial direction of the tail portion.

4. The inserter according to claim 2, characterized in that The guide groove extends along the head portion, the connecting portion and the tail portion in sequence.

5. The inserter according to claim 4, characterized in that An oblique cut surface is provided on the outer wall of the head at one side opposite to the guide groove along the extension direction of the head.

6. The inserter according to claim 2, characterized in that The outer wall of the nail body is provided with accommodating channels corresponding to the number of the wing arms and used to accommodate the wing arms, and the accommodating channels extend along the length direction of the nail body.

7. The inserter according to claim 6, characterized in that One end of the accommodating channel is a strip groove, the strip groove is connected to the accommodating channel, and the strip groove is located in the connecting portion. The other end of the accommodating channel is an elliptical groove, the elliptical groove is connected to the accommodating channel, and the elliptical groove is located in the head.

8. The inserter according to claim 7, characterized in that An extrusion area for extruding the wing arm is provided on the outer wall of the connecting portion and located between the strip groove and the elliptical groove.

9. The inserter according to any one of claims 1 to 8, characterized in that: The wing arm is in a bent shape.

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