Tunnel positioner for shoulder joint structure reconstruction

Abstract

The invention provides a tunnel positioner for reconstruction of a shoulder joint structure, the tunnel positioner is provided with a virtual sphere with the center corresponding to an inner opening of a tunnel, the tunnel positioner comprises a cross arm corresponding to the radius of the virtual sphere, one end of the cross arm is provided with a bent hook tip, and the other end of the cross arm is provided with a hook; the connecting part of the hook tip and the cross arm corresponds to the center of the virtual sphere; the telescopic arc arm assembly corresponds to the spherical surface of the virtual sphere, and the two ends of the arc arm assembly in the length direction are the first end and the second end respectively. According to the tunnel positioner, the telescopic arc arm assemblies are adopted, the radian is adjusted, one or more hinge pieces are added on the basis of a single-plane positioner, when the tunnel positioner is used, the upper arc arm assembly and the lower arc arm assembly can rotate through the hinge pieces, and therefore three-dimensional positioning of the positioning rod in a virtual sphere is achieved; therefore, a special spatial anatomical state that an approach and a positioning point are in different planes during shoulder joint reconstruction can be handled.

Description

Technical Field

[0001] The present invention relates to the technical field of shoulder joint structure reconstruction, and particularly to a tunnel locator for shoulder joint structure reconstruction. Background Art

[0002] Both shoulder joint structure reconstruction and knee ligament reconstruction require the establishment of various tunnels, and the tunnel positioning device is a necessary auxiliary instrument. At present, the application of the arc-arm tunnel locator for knee ligament reconstruction is very mature. Its basic principle is to determine the inner opening (bull's-eye) of the tunnel with the upper arc-arm member, determine the outer opening of the tunnel through the positioning rod of the lower arc-arm member, and then establish a tunnel in the direction of the bull's-eye through the positioning rod. Each of the two arc-arm members forms an arc surface and can be fully integrated into a plane. The two arc arms are located on the circumference and are sleeved. The tunnel runs in this plane. Specifically, during knee ligament reconstruction, the upper arc arm of the locator is inserted into the joint to locate the center (inner opening of the tunnel) through a soft tissue approach, and the positioning rod in the lower arc arm of the locator can reach the bone surface to locate the outer opening of the tunnel without a special soft tissue approach. The plane formed by the positioning rod and the lower arc arm can be naturally integrated into the plane formed by the upper arc arm to achieve the socketing of the upper and lower arc arms.

[0003] However, in shoulder joint structure reconstruction, there is still a lack of a dedicated tunnel locator. The design concept of the existing knee joint locator cannot be applied to the shoulder joint. The single-plane locator for knee ligament reconstruction with the center of a circle on a plane as the target point cannot be used in shoulder joint structure reconstruction. Specifically, during shoulder joint structure reconstruction, the upper arc arm enters the joint through an approach to locate the target center, forming a plane. The lower arc arm needs to reach the bone surface through a special soft tissue approach to locate the distal opening of the tunnel. The positioning rod and the lower arc arm form another plane. Although the positioning rod in the lower arc arm also points to the target center (actually the center of the sphere because the two arc arms are sleeved on the same spherical surface), since the upper and lower arc arms are not in the same plane, it is impossible to directly socket the arc arm kits located on the two planes. Therefore, the single-plane locator for knee ligament reconstruction is difficult to complete the tunnel positioning for shoulder joint reconstruction.

[0004] Therefore, to solve the above problems, the present invention proposes a tunnel locator for shoulder joint structure reconstruction. Summary of the Invention

[0005] To solve the problem that the existing arc-arm tunnel locator for knee ligament reconstruction cannot be used for shoulder joint structure reconstruction, the present invention provides a tunnel locator for shoulder joint structure reconstruction.

[0006] According to an object of the present invention, the present invention provides a tunnel locator for shoulder joint structure reconstruction, and a virtual sphere corresponding to the tunnel inner opening is provided on the tunnel locator, including:

[0007] A horizontal arm corresponding to the radius of the virtual sphere, one end of the horizontal arm is provided with a bent hook tip, and the connection portion between the hook tip and the horizontal arm corresponds to the center of the virtual sphere;

[0008] A telescopic arc arm assembly corresponding to the spherical surface of the virtual sphere, wherein the two ends of the arc arm assembly in the length direction are respectively a first end and a second end, the first end of the arc arm assembly is connected to the other end of the cross arm, the arc arm assembly comprises an upper arc arm assembly and a lower arc arm assembly extending sequentially between the first end and the second end, at least one hinge is arranged between the upper arc arm assembly and the lower arc arm assembly, and the axis of the hinge corresponds to the radial arrangement of the virtual sphere;

[0009] A positioning rod corresponding to the radius of the virtual sphere is arranged at the second end of the arc arm assembly along the radius of the virtual sphere.

[0010] Preferably, the upper arc arm assembly comprises an upper plug-in arc arm and an upper sleeve arc arm, one end of the upper plug-in arc arm is the first end of the arc arm assembly, the upper sleeve arc arm is movably sleeved on the outer side of the upper plug-in arc arm along the length direction, and the side of the upper sleeve arc arm away from the first end of the arc arm assembly is connected to a movable end of the hinge;

[0011] The lower arc arm assembly includes a lower sleeve arc arm and a lower plug-in arc arm, one end of the lower sleeve arc arm is the second end of the arc arm assembly, the lower sleeve arc arm is sleeved on the outside of the lower plug-in arc arm, and the side of the lower plug-in arc arm away from the second end of the arc arm assembly is connected to the other movable end of the hinge.

[0012] Preferably, locking members are provided on both the arc-arm assembly and the hinge, and the locking members are configured to constrain the telescopic position of the arc-arm assembly and the rotational position of the hinge.

[0013] Preferably, the locking piece on the arc arm assembly is a screw, which is installed on the side of the upper sleeve arc arm close to the first end of the arc arm assembly, and the end of the locking piece abuts and fits with the outer wall of the upper plug-in arc arm. The locking piece is installed on the side of the lower sleeve arc arm away from the second end of the arc arm assembly, and the end of the locking piece abuts and fits with the outer wall of the lower plug-in arc arm.

[0014] Preferably, the hinge member includes an upper ring member, a lower ring member and a rotating shaft. The upper ring member is disposed on a side of the arc arm of the upper sleeve away from the first end of the arc arm assembly. The lower ring member is disposed on a side of the arc arm of the lower plug away from the second end of the arc arm assembly. The upper ring member and the lower ring member are arranged in a radial dislocation in the virtual sphere. The rotating shaft passes through the inner sides of the upper ring member and the lower ring member, and an extrusion ring is screwed on the outer side of the rotating shaft. The extrusion ring is in extrusion fit with the upper ring member and / or the lower ring member.

[0015] Preferably, a cylindrical control member is disposed at the second end of the arc arm assembly along the radial direction of the virtual sphere, and a hollow positioning rod is installed inside the control member.

[0016] Preferably, one end of the positioning rod away from the center of the virtual sphere is exposed outside the control member.

[0017] Preferably, one end of the positioning rod facing the center of the virtual sphere gradually decreases towards the end.

[0018] Preferably, the outer diameter of the positioning rod is equal to the inner diameter of the control member. The outer diameter of the positioning rod and the inner diameter of the control member are both 4.5 - 5 mm. The inner diameter of the positioning rod is 2.5 mm, and the length of the positioning rod is 20 - 25 cm.

[0019] Preferably, the radius of the virtual sphere is 15 - 20 cm, the length of the hook tip is 3 - 5 mm, the radian of the upper plug arc arm, the upper sleeve arc arm, the lower sleeve arc arm and the lower plug arc arm are all 45 - 60 degrees, and the length of the cross arm, the radius of the upper arc arm assembly and the radius of the lower arc arm assembly are all equal to the radius of the virtual sphere.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] The tunnel locator adopts a telescopic arc arm assembly to realize the adjustment of the radian size, and adds one or more hinge members on the basis of the single - plane locator. During use, the upper arc arm assembly and the lower arc arm assembly can rotate through the hinge members, so as to realize the three - dimensional positioning of the positioning rod in the virtual sphere, so as to cope with the special spatial anatomical state that the access and positioning points during shoulder joint reconstruction are in different planes.

[0022] The present invention will be further described below in conjunction with the drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is an overall schematic diagram of a tunnel locator for shoulder joint structure reconstruction according to the present invention;

[0024] Figure 2Schematic diagram of the connection between the cross arm and the hook tip of a tunnel locator for shoulder joint structure reconstruction according to the present invention;

[0025] Figure 3 Schematic diagram of the hinge member of a tunnel locator for shoulder joint structure reconstruction according to the present invention;

[0026] Figure 4 Schematic diagram of the connection between the lower kit arc arm and the control member of a tunnel locator for shoulder joint structure reconstruction according to the present invention;

[0027] Figure 5 Schematic diagram of the positioning rod of a tunnel locator for shoulder joint structure reconstruction according to the present invention. Detailed implementation mode

[0028] The following description is used to elaborate the present invention in detail so that those skilled in the art can implement the present invention. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variations. The basic principles defined in the following description of the present invention can be applied to other implementation schemes, variant schemes, improvement schemes, equivalent schemes, and other technical schemes that do not deviate from the spirit and scope of the present invention.

[0029] Please refer to Figures 1-5 , the present invention provides a technical solution: a tunnel locator for shoulder joint structure reconstruction, on which a virtual sphere A corresponding to the inner mouth of the center of the tunnel is provided, including:

[0030] A cross arm 100 corresponding to the radius of the virtual sphere A, one end of the cross arm 100 is provided with a bent hook tip 200, and the connection part between the hook tip 200 and the cross arm 100 corresponds to the center of the virtual sphere A;

[0031] A telescopic arc arm assembly 300 corresponding to the spherical surface of the virtual sphere A, the two ends in the length direction of the arc arm assembly 300 are respectively a first end 300a and a second end 300b, the arc arm assembly 300 includes an upper arc arm assembly 301 and a lower arc arm assembly 302 extending between the first end 300a and the second end 300b in sequence, at least one hinge member 400 is arranged between the upper arc arm assembly 301 and the lower arc arm assembly 302, the axis of the hinge member 400 is arranged corresponding to the radial direction of the virtual sphere A, and the first end 300a of the arc arm assembly 300 is connected to the other end of the cross arm 100;

[0032] A positioning rod 500 corresponding to the radius of the virtual sphere A, the positioning rod 500 is arranged at the second end 300b of the arc arm assembly 300 in a manner along the radius of the virtual sphere A.

[0033] The tunnel locator adopts a retractable arc arm assembly 300 to adjust the arc size, and adds one or more hinges 400 on the basis of a single-plane locator. When in use, the upper arc arm assembly 301 and the lower arc arm assembly 302 can be rotated through the hinge 400, thereby achieving stereoscopic positioning of the positioning rod 500 in the virtual sphere A, so as to cope with the special spatial anatomical state in which the approach and the positioning point are in different planes during shoulder joint reconstruction.

[0034] In this embodiment, the upper arc arm assembly 301 includes an upper plug-in arc arm 3011 and an upper sleeve arc arm 3012, one end of the upper plug-in arc arm 3011 is the first end 300a of the arc arm assembly 300, the upper sleeve arc arm 3012 is movably sleeved on the outer side of the upper plug-in arc arm 3011 along the length direction, and the side of the upper sleeve arc arm 3012 away from the first end 300a of the arc arm assembly 300 is connected to a movable end of the hinge 400;

[0035] The lower arc arm assembly 302 includes a lower sleeve arc arm 3021 and a lower plug-in arc arm 3022, one end of the lower sleeve arc arm 3021 is the second end 300b of the arc arm assembly 300, the lower sleeve arc arm 3021 is sleeved on the outer side of the lower plug-in arc arm 3022, and the side of the lower plug-in arc arm 3022 away from the second end 300b of the arc arm assembly 300 is connected to the other movable end of the hinge 400.

[0036] Furthermore, a locking member 600 is provided on both the arc arm assembly 300 and the hinge 400, and the locking member 600 is configured to constrain the telescopic position of the arc arm assembly 300 and the rotation position of the hinge 400, so that when in use, the arc arm assembly 300 that is telescoped to a suitable length can be fixed by the locking member 600, and the upper arc arm assembly 301 and the lower arc arm assembly 302 that are rotated to a suitable angle through the hinge 400 can be fixed by the locking member 600.

[0037] In this embodiment, the locking member 600 on the arc arm assembly 300 is a screw. The locking member 600 is installed on one side of the upper kit arc arm 3012 close to the first end 300a of the arc arm assembly 300. The end of the locking member 600 is in abutting cooperation with the outer wall of the upper plug-in arc arm 3011. The locking member 600 is installed on one side of the lower kit arc arm 3021 facing away from the second end 300b of the arc arm assembly 300. The end of the locking member 600 is in abutting cooperation with the outer wall of the lower plug-in arc arm 3022. During use, the upper plug-in arc arm 3011 is inserted into the upper kit arc arm 3012 to an appropriate depth, and the lower plug-in arc arm 3022 is inserted into the lower kit arc arm 3021 to an appropriate depth to adjust the overall length of the arc arm assembly 300. Further, the locking member 600 is tightened. The end of the locking member 600 presses against the outer walls of the upper plug-in arc arm 3011 and the lower plug-in arc arm 3022 to fix the length of the arc arm assembly 300;

[0038] The hinge member 400 is a hinge, and the locking member 600 on the hinge member 400 is a compression ring. Specifically, the hinge member 400 includes an upper ring member 401, a lower ring member 402, and a rotating shaft 403. An upper ring member 401 is provided on one side of the upper kit arc arm 3012 facing away from the first end 300a of the arc arm assembly 300. A lower ring member 402 is provided on one side of the lower plug-in arc arm 3022 facing away from the second end 300b of the arc arm assembly 300. The upper ring member 401 and the lower ring member 402 are arranged in a radially offset manner on the virtual sphere A. The rotating shaft 403 passes through the inner sides of the upper ring member 401 and the lower ring member 402. A compression ring is screwed on the outer side of the rotating shaft 403, and the compression ring is in pressing cooperation with the upper ring member 401.

[0039] During use, the position of the compression ring on the rotating shaft 403 can be controlled to switch the hinge member 400 between the loosened state and the locked state. When the compression ring is separated from the upper ring member 401, the hinge member 400 is in the loosened state. In the loosened state, the hinge member 400 allows the upper arc arm assembly 301 and the lower arc arm assembly 302 to rotate around the axis. On the contrary, when the compression ring presses against the upper ring member 401, the hinge member 400 is in the locked state. In the locked state, the upper arc arm assembly 301 and the lower arc arm assembly 302 cannot rotate through the hinge member 400.

[0040] It should be noted that the configuration of the hinge member 400 covers all configurations having the function of the rotating shaft 403 to realize the rotation or folding of the upper arc arm assembly 301 and the lower arc arm assembly 302 around the axis.

[0041] The second end 300b of the arc arm assembly 300 is provided with a cylindrical control member 700 radially arranged along the virtual sphere A. A positioning rod 500 is installed on the inner side of the control member 700, and the positioning rod 500 is hollow.

[0042] Furthermore, one end of the positioning rod 500 away from the center of the virtual sphere A is exposed to the outside of the control member 700;

[0043] Furthermore, one end of the positioning rod 500 that faces the center of the virtual sphere A gradually decreases toward the end. In some embodiments, one end of the positioning rod 500 that faces the center of the virtual sphere A is conical, flat-headed or beveled.

[0044] In this embodiment, the radius of the virtual sphere A is 15-20 cm, the length of the hook tip 200 is 3-5 mm, the arc angles of the upper plug-in arc arm 3011, the upper set arc arm 3012, the lower set arc arm 3021 and the lower plug-in arc arm 3022 are all 45-60 degrees, and the length of the cross arm 100, the radius of the upper arc arm assembly 301 and the radius of the lower arc arm assembly 302 are all equal to the radius of the virtual sphere A;

[0045] The outer diameter of the positioning rod 500 is equal to the inner diameter of the control member 700. The outer diameter of the positioning rod 500 and the inner diameter of the control member 700 are both 4.5-5 mm to accommodate the positioning rod 500. The inner diameter of the positioning rod 500 is 2.5 mm. The length of the positioning rod 500 is equal to the radius of the virtual sphere A plus 5 cm, that is, 20-25 cm. Through the above definition of the specifications of each component, the tunnel locator can be applied to the reconstruction of the shoulder joint structure.

[0046] Directions:

[0047] First, the components constituting the tunnel locator are assembled into one body, wherein the locking members 600 on the arc arm assembly 300 and the hinge member 400 are both in an unlocked state;

[0048] Insert the hook tip 200 into the joint through a special approach, place the hook tip 200 at the position of the tunnel opening, adjust the curvature of the upper arc arm assembly 301 until it is satisfactory, and lock the curvature of the upper arc arm assembly 301 with the locking piece 600;

[0049] Adjust the angle between the two movable ends of the hinge 400, lock the hinge 400 by the locking member 600, fix the angle between the upper arc arm assembly 301 and the lower arc arm assembly 302, and make sure that the plane where the positioning rod 500 is located is satisfactory;

[0050] Adjust the curvature of the lower arc arm assembly 302 until it is satisfactory, and lock the curvature of the lower arc arm assembly 302 by means of the locking member 600;

[0051] Establish the access path for the positioning rod 500, insert the positioning rod 500 through the control member 700 to establish a tunnel.

[0052] In summary, the tunnel locator converts the single-plane locator into a three-dimensional locator by adding one or more hinge members 400 to the single-plane locator. The radian of the upper arc arm assembly 301 and the lower arc arm assembly 302 is adjustable to adapt to different usage scenarios. By defining the specifications of each component, the tunnel locator is applicable to shoulder joint structure reconstruction.

[0053] The tunnel locator solves the problem of tunnel positioning in shoulder joint structure reconstruction, realizes feasible, convenient and accurate tunnel positioning, thereby ensuring the effect of shoulder joint reconstruction surgery in terms of instruments and techniques.

[0054] The embodiments described above are only used to illustrate the technical ideas and characteristics of the present invention. The purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. The scope of the patent adoption of the present invention cannot be limited only by these embodiments. That is, any equivalent changes or modifications made according to the spirit disclosed by the present invention still fall within the scope of the patent of the present invention.

Claims

1. A tunnel locator for shoulder joint structure reconstruction, wherein the tunnel locator is provided with a virtual sphere whose center corresponds to the inner opening of the tunnel, characterized in that: include: A horizontal arm corresponding to the radius of the virtual sphere, one end of the horizontal arm is provided with a bent hook tip, and the connection portion between the hook tip and the horizontal arm corresponds to the center of the virtual sphere; A telescopic arc arm assembly corresponding to the spherical surface of the virtual sphere, wherein the two ends of the arc arm assembly in the length direction are respectively a first end and a second end, the first end of the arc arm assembly is connected to the other end of the cross arm, the arc arm assembly comprises an upper arc arm assembly and a lower arc arm assembly extending sequentially between the first end and the second end, at least one hinge is arranged between the upper arc arm assembly and the lower arc arm assembly, and the axis of the hinge corresponds to the radial arrangement of the virtual sphere; A positioning rod corresponding to the radius of the virtual sphere is arranged at the second end of the arc arm assembly along the radius of the virtual sphere.

2. A tunnel locator for shoulder joint structure reconstruction according to claim 1, characterized in that: The upper arc arm assembly comprises an upper plug-in arc arm and an upper sleeve arc arm, one end of the upper plug-in arc arm is the first end of the arc arm assembly, the upper sleeve arc arm is movably sleeved on the outer side of the upper plug-in arc arm along the length direction, and the side of the upper sleeve arc arm away from the first end of the arc arm assembly is connected to a movable end of the hinge; The lower arc arm assembly includes a lower sleeve arc arm and a lower plug-in arc arm, one end of the lower sleeve arc arm is the second end of the arc arm assembly, the lower sleeve arc arm is sleeved on the outside of the lower plug-in arc arm, and the side of the lower plug-in arc arm away from the second end of the arc arm assembly is connected to the other movable end of the hinge.

3. A tunnel locator for shoulder joint structure reconstruction according to claim 2, characterized in that: The arc arm assembly and the hinge are both provided with locking members, and the locking members are configured to constrain the telescopic position of the arc arm assembly and the rotational position of the hinge.

4. A tunnel locator for shoulder joint structure reconstruction according to claim 3, characterized in that: The locking piece on the arc arm assembly is a screw, which is installed on the side of the upper sleeve arc arm close to the first end of the arc arm assembly, and the end of the locking piece abuts and cooperates with the outer wall of the upper plug-in arc arm. The locking piece is installed on the side of the lower sleeve arc arm away from the second end of the arc arm assembly, and the end of the locking piece abuts and cooperates with the outer wall of the lower plug-in arc arm.

5. A tunnel locator for shoulder joint structure reconstruction according to claim 3, characterized in that: The hinged member includes an upper annular member, a lower annular member and a rotating shaft. The upper annular member is arranged on a side of the upper sleeve arc arm away from the first end of the arc arm assembly, and the lower annular member is arranged on a side of the lower plug-in arc arm away from the second end of the arc arm assembly. The upper annular member and the lower annular member are arranged in a radially staggered manner in the virtual sphere. The rotating shaft passes through the inner sides of the upper annular member and the lower annular member, and the extrusion ring is screwed on the outer side of the rotating shaft. The extrusion ring extrudes and fits the upper annular member and / or the lower annular member.

6. A tunnel locator for shoulder joint structure reconstruction according to claim 1, characterized in that: The second end of the arc arm assembly is provided with a cylindrical control member arranged radially along the virtual sphere, and a hollow positioning rod is installed on the inner side of the control member.

7. A tunnel locator for shoulder joint structure reconstruction according to claim 6, characterized in that: One end of the positioning rod facing away from the center of the virtual sphere is exposed to the outside of the control member.

8. A tunnel locator for shoulder joint structure reconstruction according to claim 6, characterized in that: One end of the positioning rod facing the center of the virtual sphere gradually decreases toward the end.

9. A tunnel locator for shoulder joint structure reconstruction according to claim 6, characterized in that: The outer diameter of the positioning rod is equal to the inner diameter of the control member, the outer diameter of the positioning rod and the inner diameter of the control member are both 4.5-5 mm, the inner diameter of the positioning rod is 2.5 mm, and the length of the positioning rod is 20-25 cm.

10. A tunnel locator for shoulder joint structure reconstruction according to claim 2, characterized in that: The radius of the virtual sphere is 15-20cm, the length of the hook tip is 3-5mm, the curvature of the upper plug-in arc arm, the upper sleeve arc arm, the lower sleeve arc arm and the lower plug-in arc arm are all 45-60 degrees, and the length of the cross arm, the radius of the upper arc arm assembly and the radius of the lower arc arm assembly are all equal to the radius of the virtual sphere.

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