Adjustable suture anchor

Abstract

The application relates to the technical field of medical devices, in particular to an adjustable suture anchor, which comprises a suture and an anchor body, the anchor body comprises a first body part and a second body part arranged in two parts, the suture comprises a connecting part and a connecting part, the connecting part passes through the second body part in the axial direction of the second body part and is fixedly connected with the first body part, and the connecting part is located between the first body part and the second body part, and external threads are formed on the outer walls of the first body part and the second body part. The purpose of the application is to provide an adjustable suture anchor for at least one technical problem involved in the background art.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and more specifically, to an adjustable wire anchor. Background Technology

[0002] Suture anchors are commonly used to fix soft tissue to bone and are widely used in joints such as the shoulder, knee, and ankle. Structurally, suture anchors mainly consist of an anchor portion and a suture portion. Typically, during surgery, deep holes, or even through holes, are drilled into the bone to install the anchor portion, thereby fixing tendons or soft tissue to the bone using the suture anchor. However, in actual surgery, especially in small joints like the foot and ankle, the depth of the deep or through holes often does not match the length of the anchor portion of the suture anchor, causing inconvenience to the procedure. Utility Model Content

[0003] The purpose of this application is to provide an adjustable wire anchor to address at least one of the technical problems mentioned in the background art.

[0004] To achieve the above objectives, this application adopts the following technical solution:

[0005] This application provides an adjustable threaded anchor, including a thread and an anchor body. The anchor body includes a first body part and a second body part that are separately disposed. The thread includes a connecting part and a connecting part. The connecting part passes through the second body part in the axial direction and is fixedly connected to the first body part. The connecting part is located between the first body part and the second body part. External threads are formed on the outer wall of both the first body part and the outer wall of the second body part.

[0006] Optionally, a thread hole extending axially in the second body portion is formed on the second body portion, through which the thread passes and slides in cooperation with the thread hole.

[0007] The beneficial effects of this technical solution are as follows: It allows the second body portion to move freely relative to the suture, ensuring the implantation depth of the second body portion and facilitating adjustment of the implantation depth. This makes it easier to adjust the end of the implanted second body portion that enters the hole to be flush with the bone surface. Furthermore, using a single adjustable suture anchor provided in this application enables multi-position fixation, eliminating the need for multiple separate anchors, thus enhancing fixation and facilitating surgical procedures. Simultaneously, because the suture can slide relative to the second body portion, moving the second body portion does not exert significant force on the suture, thereby reducing the risk of detachment or breakage of the suture at the connection point with the first body portion.

[0008] Optionally, the thread hole is fitted with the sewing thread with a clearance.

[0009] The beneficial effect of this technical solution is that it makes it less likely for the thread to knot or curl inside the thread hole, and facilitates the thread to pass through the thread hole.

[0010] Optionally, the adjustable threaded anchor provided in this application includes two threads, and two thread holes are formed on the second body portion, with the two threads slidingly engaging with the two thread holes in a one-to-one correspondence.

[0011] The beneficial effects of this technical solution are as follows: by setting two anchor bodies and two sutures, with the two sutures being independent and not connected, the two sutures can fix the soft tissue separately, increasing the number of positions that can be fixed by an adjustable suture anchor during the operation. The two suture holes on the second body cooperate with the two sutures respectively, thus avoiding the problem of the two sutures being unable to be used separately due to entanglement between them when they are located in one suture hole.

[0012] Optionally, the two wire holes are symmetrically arranged with the axis of the second body as the axis of symmetry, and both wire holes are located close to the external thread of the second body.

[0013] The beneficial effect of this technical solution is that it makes the distance between the two thread holes greater, and consequently the distance between the two seams that pass through the two thread holes is also greater, making it less likely for the two seams to get tangled together.

[0014] Optionally, the end of the first body portion away from the connecting portion is the first head end. The first body portion and the connecting portion are integrally injection molded. The connecting portion extends along the axial direction of the first body portion and extends to the first head end.

[0015] The beneficial effects of this technical solution are as follows: the portion of the suture located inside the first body is long enough, and the connection strength between the connecting part and the first body is large, so that the suture is less likely to detach from the first body when under stress, and is less likely to break at the connection point between the suture and the first body, thereby reducing the surgical risk.

[0016] Optionally, the connecting portion extends in a wavy shape. This increases the contact area between the connecting portion and the first body portion, further increasing the connection strength between them. Of course, the connecting portion can also extend only in a straight line.

[0017] Optionally, the suture may further include a plurality of clustered portions fixed to the connecting portion, each of the clustered portions being distributed in the extending direction of the connecting portion.

[0018] The beneficial effect of this technical solution is that, in this way, the connecting part forms a limit between the agglomeration part and the first body part, which further increases the difficulty of the connecting part separating from the first body part, thereby increasing the connection strength between the connecting part and the first body part.

[0019] Optionally, the end of the first body portion away from the connecting portion is a first head end, which is conical or frustum-shaped; the end of the second body portion near the connecting portion is a second head end, and the end face of the second head end is rounded with the outer wall of the second body portion.

[0020] The beneficial effects of this technical solution are as follows: When the first body part is implanted into the hole, the first tip enters the hole first; when the second body part is implanted into the hole, the second tip enters the hole first. The shapes of the first and second tips make it easier for the first and second body parts to enter the hole. The rounded corner design between the end face of the second tip and the outer wall of the second body part, compared to the conical or frustum-shaped structure of the first tip, increases the contact area between the second body part and the bone after implantation. When the first and second body parts are used to fix two tendons of different thicknesses respectively, the first and second body parts can be selected for targeted fixation, thereby reducing the difficulty of the operation and improving the fixation effect on the tendons.

[0021] Optionally, the length of the second body portion is greater than the length of the first body portion.

[0022] The technical solution provided in this application can achieve at least one of the following beneficial effects:

[0023] The adjustable suture anchor provided in this application, comprising a separate first body portion and a second body portion, allows for adjustment of the implantation position of the second body portion within the hole. This enables the anchor body to adapt to the hole depth, alleviating the problem often encountered in actual surgery where the depth of deep or through holes does not match the length of the anchor portion of the adjustable suture anchor, thus facilitating smooth surgical procedures. Furthermore, when the hole depth on the bone is greater than the sum of the lengths of the first and second body portions, a gap remains between the first and second body portions after implantation. This gap provides adequate space for bone growth, promoting bone recovery. Simultaneously, by reducing unnecessary anchor size, it lowers the feeling of a foreign body in the body and reduces the probability of inflammation.

[0024] The additional technical features and advantages of this application will become more apparent from the following description or from practical application. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the specific embodiments of this application, the accompanying drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 A three-dimensional structural schematic diagram of one embodiment of the adjustable wire anchor provided in this application;

[0027] Figure 2 A cross-sectional structural schematic diagram of one embodiment of the first body portion provided in this application;

[0028] Figure 3 A cross-sectional structural schematic diagram of one embodiment of the second body portion provided in this application;

[0029] Figure 4 A schematic diagram of an embodiment of the present application showing the installation of an adjustable wire anchor into a through hole in a bone;

[0030] Figure 5 This is a schematic diagram of one embodiment of the adjustable suture anchor provided in this application for fixing two tendons.

[0031] Figure label:

[0032] 01. First body section; 02. Connecting section;

[0033] 03. Second body part; 04. Suture;

[0034] 05. Aggregation section; 06. Connecting section;

[0035] 07. Wire guide hole; 08. Second end;

[0036] 09. First head end; 100. Skeleton;

[0037] 200. Tendon. Detailed Implementation

[0038] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0039] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] like Figures 1 to 5 As shown, this application provides an adjustable threaded anchor, including a thread 04 and an anchor body. The anchor body includes a first body part 01 and a second body part 03, which are separately disposed. The thread 04 includes a connecting part 02 and a connecting part 06. The connecting part 06 passes through the second body part 03 axially and is fixedly connected to the first body part 01. The connecting part 02 is located between the first body part 01 and the second body part 03. External threads are formed on the outer wall of the first body part 01 and the outer wall of the second body part 03.

[0042] In this embodiment of the application, the anchor body includes a first body part 01 and a second body part 03 that are separately arranged. This means that the anchor body provided in this application is not a rigid whole formed in one piece like existing anchors. Instead, one of the first body part 01 and the second body part 03 can be moved as a whole in all directions relative to the other as an independent part.

[0043] The adjustable wire anchor provided in this application embodiment can be used by sequentially inserting the first body part 01 and the second body part 03 into the bone 100 through a hole or through a hole, or by inserting the first body part 01 and the second body part 03 together into the bone 100 through a hole or through a hole. When the first body part 01 and the second body part 03 are sequentially implanted into the deep or through hole of the bone 100, if the bone 100 has a deep hole, the first body part 01 is first implanted into the deep hole and moved to a preset depth. Then the second body part 03 is implanted into the deep hole, so that the second body part 03 is completely submerged in the deep hole and the last end of the second body part 03 is flush with the bone surface. If the bone 100 has a through hole, the first body part 01 is first implanted from one end of the through hole until the end of the first body part 01 that first entered the through hole is moved to be flush with the other end of the through hole (i.e., flush with the bone surface where the other end is located). Then the second body part 03 is implanted into the through hole, so that the second body part 03 is completely implanted in the through hole and the last end of the second body part 03 is flush with the bone surface. When the first body part 01 and the second body part 03 are implanted together into the deep hole or through hole of the bone 100, if the bone 100 is provided with a deep hole, the first body part 01 and the second body part 03 are first implanted into the deep hole at a preset depth, and then the second body part 03 is twisted to move the second body part 03 in the opposite direction of implantation until the end of the second body part 03 that enters the deep hole is flush with the bone surface; if the bone 100 is provided with a through hole, the first body part 01 and the second body part 03 are first implanted into the through hole from one port, and the end of the first body part 01 that enters the through hole is flush with the other port of the through hole (i.e., flush with the bone surface where the other port is located), and then the second body part 03 is twisted to move the second body part 03 in the opposite direction of implantation until the end of the second body part 03 that enters the through hole is flush with the bone surface.

[0044] The adjustable suture anchor provided in this application, comprising a separate first body part 01 and a second body part 03, allows for adjustment of the implantation position of the second body part 03 within the hole. This enables the anchor body to adapt to the hole depth, alleviating the problem of mismatch between the depth of deep or through holes and the length of the anchor portion of the adjustable suture anchor, which often occurs during actual surgery. This facilitates smooth surgical procedures. Furthermore, when the hole depth on the bone 100 is greater than the sum of the lengths of the first body part 01 and the second body part 03, a gap remains between the first body part 01 and the second body part 03 after implantation. This gap provides adequate space for bone growth, promoting bone recovery. Simultaneously, by reducing unnecessary anchor size, it reduces the feeling of a foreign body and the probability of inflammation.

[0045] like Figure 3As shown, optionally, a suture hole 07 extending axially from the second body portion 03 is formed on the second body portion 03. The suture 04 passes through the suture hole 07, and the suture 04 slides in conjunction with the suture hole 07. This allows the second body portion 03 to move freely relative to the suture 04, ensuring the implantation depth of the second body portion 03, facilitating adjustment of the implantation depth, and making it easier to adjust the end of the implanted second body portion 03 that finally enters the hole to be flush with the surface of the bone 100; and, as... Figure 5 As shown, the adjustable suture anchor provided in this application enables multi-position fixation without the need for multiple individual anchors, enhancing fixation effectiveness and facilitating surgical procedures. Specifically, in ankle tendon multi-fixation surgeries, the original positions of the two tendons 200 remain unchanged, requiring fixation to different bone 100 positions. In such cases, multiple individual anchors would be needed for repair. However, when using the adjustable suture anchor provided in this application, one tendon 200 is fixed using the first body portion 01, and the other tendon 200 is fixed using the second body portion 03. Since the suture 04 can slide relative to the second body part 03, the distance between the first body part 01 and the second body part 03 can be selected according to the needs of the operation when fixing the two tendons 200. After the fixation of the two tendons 200 is completed, the distance between the two anchors is not easily displaced due to the long-term stretching and contraction of the tendons 200. At the same time, since the suture 04 can slide relative to the second body part 03, moving the second body part 03 is not likely to exert a large force on the suture 04, thereby reducing the risk of the suture 04 and the first body part 01 becoming detached or broken at the connection.

[0046] Optionally, the thread hole 07 is clearance-fitted with the thread 04. This makes it less likely for the thread 04 to knot or curl within the thread hole 07, facilitating the passage of the thread 04 through the thread hole 07. Alternatively, the inner wall of the thread hole 07 can be made to fit snugly against the thread 04 in the circumferential direction.

[0047] Optionally, the adjustable suture anchor provided in this embodiment includes two sutures 04, and two suture holes 07 are formed on the second body part 03. The two sutures 04 slide in a one-to-one correspondence with the two suture holes 07. By providing two anchor bodies and two sutures 04, with the two sutures being independent and not connected, each suture 04 can individually fix the soft tissue, increasing the number of positions that can be fixed using a single adjustable suture anchor during surgery. The two suture holes 07 on the second body part 03 respectively engage with the two sutures 04, thus avoiding the problem of the two sutures 04 being entangled and unable to be used separately if they are located within a single suture hole 07.

[0048] Optionally, the two thread holes 07 are symmetrically arranged about the axis of the second body part 03, and both thread holes 07 are located close to the external thread of the second body part 03. This makes the distance between the two thread holes 07 greater, and consequently, the distance between the two stitches 04 passing through the two thread holes 07 is also greater, making it less likely for the two stitches 04 to become tangled. Of course, the two thread holes 07 can also be located on the same side of the axis.

[0049] In the prior art, the suture 04 is connected to the anchor by knotting inside the anchor or moving around the internal components of the anchor. Because the anchor is very small, during the use of the anchor and suture 04, pulling or tugging operations by the doctor may cause the suture 04 to detach inside the anchor, or the moving components inside the anchor may break due to friction from the suture 04, ultimately leading to surgical risks. Therefore, in this embodiment, optionally, the end of the first body portion 01 away from the connecting portion 02 is a first head end 09. The first body portion 01 and the connecting portion 06 are integrally injection molded, and the connecting portion 06 extends axially along the first body portion 01 and extends to the first head end 09. This ensures that the portion of the suture 04 within the first body portion 01 is sufficiently long, and that the connection strength between the connecting portion 06 and the first body portion 01 is high. Consequently, the suture 04 is less likely to detach from the first body portion 01 under stress, and the connection point between the suture 04 and the first body portion 01 is less likely to break, thus reducing surgical risks. In this embodiment, preferably, the length of the connecting portion 06 is not less than 5 cm, meaning that the length of the suture 04 within the first body portion 01 is not less than 5 cm.

[0050] Optionally, the connecting portion 06 extends in a wavy shape. This increases the contact area between the connecting portion 06 and the first body portion 01, further increasing the connection strength between the connecting portion 06 and the first body portion 01. Of course, the connecting portion 06 can also extend only in a straight line.

[0051] like Figure 2 As shown, optionally, the suture 04 further includes a plurality of clustered portions 05 fixed to the connecting portion 06, each clustered portion 05 being distributed in the extending direction of the connecting portion 06. Preferably, each clustered portion 05 is evenly distributed. In this way, the connecting portion 06 forms a limiting position between the clustered portions 05 and the first body portion 01, further increasing the difficulty for the connecting portion 06 to detach from the first body portion 01, thereby increasing the connection strength between the connecting portion 06 and the first body portion 01. In this embodiment, preferably, a single suture 04 has at least three clusters formed within the first body portion 01.

[0052] Optionally, the end of the first body portion 01 furthest from the connecting portion 02 is a first head end 09, which is conical or frustum-shaped; the end of the second body portion 03 closest to the connecting portion 02 is a second head end 08, with a rounded corner between the end face of the second head end 08 and the outer wall of the second body portion 03. It is understood that the first head end 09 refers to the end of the first body portion 01 that enters the hole first during implantation, and the second head end 08 refers to the end of the second body portion 03 that enters the hole first during implantation; the shapes of the first head end 09 and the second head end 08 determine that the front of the first head end 09 is relatively thinner, and the front of the second head end 08 is relatively thicker. Thus, when the first body part 01 is implanted into the hole, the first head end 09 enters the hole first; when the second body part 03 is implanted into the hole, the second head end 08 enters the hole first. The shapes of the first head end 09 and the second head end 08 make it easier for the first body part 01 and the second body part 03 to enter the hole. The rounded corner design between the end face of the second head end 08 and the outer wall of the second body part 03, compared to the conical or frustum-shaped structure of the first head end, also increases the contact area between the second body part 03 and the bone 100 after implantation. When using the first body portion 01 and the second body portion 03 to fix two tendons 200 of different thicknesses, the first body portion 01 and the second body portion 03 can be selectively used for fixation, thereby reducing surgical difficulty and improving the fixation effect on the tendons 200. Specifically, since the front part of the first head end 09 is thinner and the front part of the second head end 08 is relatively thicker, the thinner tendon 200 can be fixed by the first body portion 01, and the thicker tendon 200 can be fixed by the second body portion 03. It can be understood that the end of the first body portion 01 furthest from the first head end 09 is the first tail end, and the end of the second body portion 03 furthest from the second head end 08 is the second tail end.

[0053] Optionally, the length of the second body portion 03 is greater than the length of the first body portion 01. It is understood that in the embodiments of this application, the external threads on the first body portion 01 and the external threads on the second body portion 03 have the same major diameter, the same minor diameter, the same pitch, and the same thread type.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An adjustable anchor with thread, comprising a thread and an anchor body, characterized in that, The anchor body includes a first body part and a second body part that are separately arranged. The suture includes a connecting part and a connecting part. The connecting part passes through the second body part in the axial direction and is fixedly connected to the first body part. The connecting part is located between the first body part and the second body part. External threads are formed on the outer wall of both the first body part and the outer wall of the second body part.

2. The adjustable anchor bolt with wire as described in claim 1, characterized in that, A thread hole extending axially in the second body portion is formed on the second body portion, the thread passes through the thread hole, and the thread slides in contact with the thread hole.

3. The adjustable anchor bolt with wire according to claim 2, characterized in that, The thread hole is fitted with the seam thread.

4. The adjustable anchor bolt with wire according to claim 2, characterized in that, It includes two sutures, and two thread holes are formed on the second body portion, with each of the two sutures slidingly engaging with one of the two thread holes.

5. The adjustable anchor bolt with wire according to claim 4, characterized in that, The two wire-passing holes are symmetrically arranged with the axis of the second body as the axis of symmetry, and both wire-passing holes are located close to the external thread of the second body.

6. The adjustable anchor bolt with wire according to claim 1, characterized in that, The end of the first body portion away from the connecting portion is the first head end. The first body portion and the connecting portion are integrally injection molded. The connecting portion extends along the axial direction of the first body portion and extends to the first head end.

7. The adjustable anchor bolt with wire according to claim 6, characterized in that, The connecting part extends in a wavy shape.

8. The adjustable anchor bolt with wire according to claim 7, characterized in that, The suture also includes a plurality of clustered portions fixed to the connecting portion, and each clustered portion is distributed in the extending direction of the connecting portion.

9. The adjustable anchor bolt with wire according to claim 1, characterized in that, The end of the first body portion away from the connecting portion is the first head end, which is conical or frustum-shaped; the end of the second body portion near the connecting portion is the second head end, and the end face of the second head end is rounded with the outer wall of the second body portion.

10. The adjustable anchor bolt with wire according to any one of claims 1 to 9, characterized in that, The length of the second body part is greater than the length of the first body part.

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