Anterior cruciate ligament repair device

Abstract

The present invention discloses an anterior cruciate ligament repair device, including a fixing frame, a Kirschner wire guide sleeve, a positioning frame, a locator and an anchor guide; a Kirschner wire guide sleeve is inserted at one end of the fixing frame; a through slot and a fastening mechanism are provided on the positioning frame, and the other end of the fixing frame passes through the through slot, and the positioning frame can slide relative to the fixing frame and be fastened to the fixing frame through the fastening mechanism; the positioning frame is selectively detachably connected to the locator or the anchor guide. The present invention can realize the establishment of three channels with one anchor and two wire bands distributed in a triangle, and the three channels are distributed in a triangle in the footprint area, so that the coverage area of ​​the anterior cruciate ligament stop point is maximized, anatomical repair is achieved, and the functional stability of the knee joint is ensured; the two wire bands are distributed on both sides of the ligament to disperse its force and protect it during the repair process; the present invention establishes double wire band channels on the femoral side and the tibial side, and the wire band bone channel has a small diameter, a small amount of bone removal, small trauma, and simple operation.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to an anterior cruciate ligament repair device for knee joint used in orthopedic surgery. Background Art

[0002] Anterior cruciate ligament (ACL) injury is one of the common knee injuries, which seriously affects the stability and function of the knee joint. In the 1970s, suture repair was one of the important methods for the treatment of anterior cruciate ligament injury, but the incidence of re-tear after surgery was over 50%, so traditional repair surgery has been abandoned.

[0003] At present, ligament reconstruction is commonly used in clinical treatment of anterior cruciate ligament injury. During long-term follow-up, the knee joint after traditional anterior cruciate ligament reconstruction is still unstable in functional tests and degenerative changes occur. In order to improve clinical efficacy, some scholars proposed "anatomical reconstruction" of the anterior cruciate ligament at the end of the last century and the beginning of this century. It is advocated that the anterior cruciate ligament has two functional bundles, the anterior medial (AM) and the posterolateral (PL). Two bone tunnels, AM and PL, should be drilled in the anatomical footprint area of ​​the femur and tibia, which can better simulate the anterior and rotational tension of the normal anterior cruciate ligament. Clinical follow-up also shows that it has better stability control than the traditional single-tunnel reconstruction technology of equal length. However, its endoscopic operation technique is complicated, requiring two bone tunnels to be drilled in the femur and tibia respectively, and the amount of internal fixation consumables used is twice that of the single-tunnel technology. At the same time, due to the large bone loss after drilling four tunnels during the operation, its revision is more difficult. Some patients need to undergo a second revision after the first stage of bone tunnel grafting for one year.

[0004] In recent years, many studies have shown that the long-term efficacy of anterior cruciate ligament reconstruction surgery is still unsatisfactory and cannot effectively prevent joint degeneration. This may be related to the inability of the reconstructed ligament to effectively restore the normal anatomical and physiological functions of the anterior cruciate ligament, such as direct attachment points, proprioceptors, and multidirectional fiber arrangement. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides an anterior cruciate ligament repair device.

[0006] An anterior cruciate ligament repair device comprises a fixing frame, a Kirschner wire guide sleeve, a positioning frame, a positioner and an anchor guide; the Kirschner wire guide sleeve is inserted into one end of the fixing frame; the positioning frame is provided with a through slot and a fastening mechanism, the other end of the fixing frame passes through the through slot, the positioning frame can slide relative to the fixing frame and is fastened to the fixing frame through the fastening mechanism; the positioning frame is selectively detachably connected to the positioner or the anchor guide, two line band channels are established by the Kirschner wire through the Kirschner wire guide sleeve, the two line band channels are distributed on both sides of the ligament, the anchor is implanted through the anchor guide and sutured with the ligament, and the two line band channels and the anchor are distributed in a triangular shape in the footprint area.

[0007] Preferably, the above technical solution comprises a fastening mechanism comprising a fastening bolt, one end of which passes through the positioning frame and extends into the through slot, one end of the fastening bolt is provided with a pressure plate, and the other end of the fastening bolt is provided with a rotating handle.

[0008] Preferably, the positioning frame is provided with a button, and by pressing the button, the positioner or anchor guide can be freely plugged in and out relative to the positioning frame, and by releasing the button, the button is engaged with the positioner or anchor guide.

[0009] Preferably, the above technical solution comprises an anchor guide frame and an anchor guide sleeve, the anchor guide frame is detachably connected to the positioning frame, an axial through hole is respectively provided on both sides of the anchor guide frame, and the anchor guide sleeve is plugged into one of the through holes.

[0010] Preferably, the above technical solution is that the Kirschner wire guide sleeve is provided with an axial first guide hole and a second guide hole group, and the second guide hole group includes a plurality of adjustment holes.

[0011] Preferably, in the above technical solution, the second guide hole group includes three adjustment holes, the apertures of the first guide holes and the adjustment holes are both 1.5-3 mm, and the spacing between the axes of the adjustment holes is 1.5 mm.

[0012] The advantages and positive effects of the present invention are as follows: the present invention provides an anterior cruciate ligament repair device, which can realize the establishment of three channels with an anchor and two wire bands distributed in a triangle. The three channels are distributed in a triangular shape in the footprint area, so that the coverage area of ​​the anterior cruciate ligament stop points is maximized, anatomical repair is achieved, and the functional stability of the knee joint is ensured; the two wire bands are distributed on both sides of the ligament to disperse the force and protect it during the repair process; the present invention establishes double wire band channels on the femoral side and the tibial side, the wire band bone channel has a small diameter, a small amount of bone removal, little trauma, and simple operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of assembling a fixing frame and a positioning frame provided by an embodiment of the present invention;

[0014] Figure 2 It is a structural schematic diagram of a Kirschner wire guide sleeve provided by one embodiment of the present invention;

[0015] Figure 3 is a schematic structural diagram of a positioning frame provided by an embodiment of the present invention;

[0016] Figure 4 is a schematic structural diagram of a tibial locator provided by an embodiment of the present invention;

[0017] Figure 5 is a schematic structural diagram of a femoral locator provided by an embodiment of the present invention;

[0018] Figure 6 is a structural schematic diagram of an anchor guide frame provided by an embodiment of the present invention;

[0019] Figure 7 It is a structural schematic diagram of an anchor guide sleeve provided by an embodiment of the present invention;

[0020] Figure 8 is a schematic diagram of the structure of a button provided by an embodiment of the present invention;

[0021] Fig. 9 is a usage state diagram of a positioner provided by an embodiment of the present invention;

[0022] Fig.10 This is the usage state of the anchor guide provided by one embodiment of the present invention. Figure 1 ;

[0023] Fig.11 This is the usage state of the anchor guide provided by one embodiment of the present invention. Figure 2 ;

[0024] Fig.12 It is a schematic diagram of the positions of two wire band channels, anchors and ligaments opened by instruments provided in an embodiment of the present invention.

[0025] Among them: 1. Fixed frame;

[0026] 2. Kirschner wire guide sleeve; 21. first guide hole; 22. adjustment hole;

[0027] 3. Positioning frame; 31. Through slot; 32. Fastening bolt; 33. Pressing plate; 34. Rotating handle; 35. Button; 36. Card slot;

[0028] 4. Tibia locator; 41. Clamp; 5. Femoral locator; 51. Clamp;

[0029] 6. Anchor guide frame; 61. Clamp block; 62. Through hole;

[0030] 7. Anchor guide sleeve; 8. Kirschner wire; 9. Anchor; 10. Wire channel; 11. Ligament. DETAILED DESCRIPTION

[0031] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0033] In the description of the present invention, it should be noted 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 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 by specific circumstances.

[0034] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0035] In view of the shortcomings of the prior art such as high recurrence rate of ligament suture repair, functional instability and degenerative changes in single-procedure reconstruction, and huge bone loss in double-procedure reconstruction, this embodiment provides an anterior cruciate ligament repair device, such as Figure 1-12As shown, it includes a fixing frame 1, a Kirschner wire guide sleeve 2, a positioning frame 3, a positioner and an anchor guide; the Kirschner wire guide sleeve 2 is inserted into one end of the fixing frame 1, and the Kirschner wire guide sleeve has a guiding effect on the Kirschner wire, and a line band channel is established through the Kirschner wire; the positioning frame 3 is provided with a through slot 31 and a fastening mechanism, and the other end of the fixing frame 1 passes through the through slot 31, and the positioning frame 3 can slide relative to the fixing frame 1 and be fastened to the fixing frame 1 through the fastening mechanism, and the positioning frame can adjust the position of the positioner and the anchor guide; the positioning frame 3 is selectively detachably connected to the positioner or the anchor guide; the positioning frame is selectively connected to the The detachable connection of the locator or anchor guide means that: when establishing the wire band channel 10, the positioning frame and the locator are detachably connected, the femoral anatomical point is positioned, and after the wire band channel is established, the locator is removed, and the anchor guide is detachably installed on the positioning frame, and the anchor 9 is implanted through the anchor guide. The anchor channel and the wire band channel are located on different parallel planes; the femoral side and the tibial side respectively have their own Kirschner wire guide sleeves, which are the same in structure. Because the size of the tibial side stop point is smaller than that of the femoral side stop point, the only difference is the guide hole spacing of the Kirschner wire guide sleeve, which makes the distance between the two inserted Kirschner wires different; the locator includes a tibial locator 4 and a femoral locator 5.

[0036] In this embodiment, an anchor channel and two wire band channels are established through a Kirschner wire guide sleeve and an anchor guide, so that the above three channels are distributed in a triangular shape in the footprint area, so as to maximize the coverage area of ​​the ACL stop point, realize anatomical repair, and ensure the stability of knee joint function. The two wire bands are distributed on both sides of the ligament 11 to disperse its force and protect it during the repair process.

[0037] Specifically, the fastening mechanism includes a fastening bolt 32, one end of which passes through the positioning frame 3 and extends into the through slot 31, one end of the fastening bolt 32 is provided with a pressing plate 33, and the other end of the fastening bolt 32 is provided with a rotating handle 34. After the positioning frame slides to a suitable position on the fixing frame, the rotating handle is rotated, and the fastening bolt drives the pressing plate to move closer to the fixing frame, so that the pressing plate presses the fixing frame to lock the positioning frame and the fixing clamp, and the rotating handle is rotated in the opposite direction, and the fastening bolt drives the pressing plate to move away from the fixing frame, so that the pressing plate moves away from the fixing frame to loosen and slide the positioning frame and the fixing clamp.

[0038] The detachable connection between the positioning frame, the positioning device and the anchor guide is a quick-install structure, as shown in the following example. Figure 8 As shown, Figure 8The housing of the positioning frame is omitted, and the positioning frame 3 is provided with a button 35, the middle part of the button is rotatably connected to the positioning frame, and a slot is provided on the button at the lower part of the rotatable connection, and a block 41 is provided on the tibial positioning device 4 to match the slot 36, and a block 51 is provided on the femoral positioning device 5 to match the slot 36, and a block 61 is provided on the anchor guide frame 6 to match the slot 36. When the button 35 is pressed, the slot 36 is located at a position disengaged from the block, and the positioning device or anchor guide can be freely plugged in and out relative to the positioning frame 3, and when the button 35 is released, the slot is engaged with the block, and the button 35 is engaged with the positioning device or anchor guide.

[0039] Specifically, the anchor guide includes an anchor guide frame 6 and an anchor guide sleeve 7. The anchor guide frame 6 is detachably connected to the positioning frame 3. An axial through hole 62 is respectively provided on both sides of the anchor guide frame 6. The anchor guide sleeve 7 selects one of the through holes 62 for insertion. The two through holes on the anchor guide frame are intended to be used for both legs, i.e., the left and right sides.

[0040] Specifically, the Kirschner wire guide sleeve 2 is provided with an axial first guide hole 21 and a second guide hole group, and the second guide hole group includes a plurality of adjustment holes 22. Optionally, three optional distances are provided between two Kirschner wires, and the second guide hole group includes three adjustment holes 22. The apertures of the first guide hole 21 and the adjustment hole 22 are both 1.5-3mm, and the apertures of the first guide hole 21 and the adjustment hole 22 are preferably both 2mm, and the Kirschner wire diameter is 2mm, forming a medullary canal diameter of 2mm. The spacing between the axes of the adjustment holes 22 is 1.5mm. In traditional reconstructive surgery, the medullary canal diameter of a single operation is 7-11mm, and the medullary canal of a double operation is twice that of a single operation. The amount of bone removal is huge, and it is impossible to establish three or more channels within a limited footprint area. In this scheme, double wire band channels are established on the femoral side and the tibial side. The size of the wire band bone channel is 1.5-3mm. The anchor hole diameter is achieved by the drill bit forming a medullary channel through the inner hole of the anchor guide sleeve 7. The anchor hole diameter is 3.5mm and the minimum is 2.5mm. The small diameter means a small amount of bone removal, little trauma, and simple operation.

[0041] The aiming system of the present invention can meet the needs of establishing channels for the line band and the anchor nail separately and using them separately; the aiming system of the present invention can be used for establishing a traditional single circular ligament reconstruction bone tunnel, and can also be used for establishing a ligament repair line band channel.

[0042] The working process of this embodiment:

[0043] Femoral fixation: adjust the positioning frame to connect the femoral locator to the femoral anatomical point, select the appropriate anatomical positioning point according to the size of both sides of the stop point, and establish two wire channels from the outside of the femur to the inside with the Kirschner wire; keep the components at the end of the Kirschner wire unchanged, replace the femoral locator on the positioning frame with an anchor guide frame, and install the anchor guide sleeve in the through hole of the anchor guide frame, enter the joint cavity from the other side of the horizontal approach, implant the anchor and ligament suture along the anchor guide sleeve, and fix the two wires at the end of the outer side of the femur with knots.

[0044] Tibial side fixation: adjust the positioning frame and connect the tibial locator to position it at the anatomical point of the tibia. Use the Kirschner wire to establish a wire channel from the outside of the tibia to the inside. The wire is on the outside of the tibia and is fixed with a knot.

[0045] The advantages and positive effects of the present invention are as follows: the present invention provides an anterior cruciate ligament repair device, which can realize the establishment of three channels with an anchor and two wire bands distributed in a triangle. The three channels are distributed in a triangular shape in the footprint area, so that the coverage area of ​​the anterior cruciate ligament stop points is maximized, anatomical repair is achieved, and the functional stability of the knee joint is ensured; the two wire bands are distributed on both sides of the ligament to disperse the force and protect it during the repair process; the present invention establishes double wire band channels on the femoral side and the tibial side, the wire band bone channel has a small diameter, a small amount of bone removal, little trauma, and simple operation.

[0046] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. An anterior cruciate ligament repair device, characterized in that: It comprises a fixing frame, a Kirschner wire guide sleeve, a positioning frame, a positioner and an anchor guide; one end of the fixing frame is plugged with the Kirschner wire guide sleeve; a through slot and a fastening mechanism are provided on the positioning frame, the other end of the fixing frame passes through the through slot, the positioning frame can slide relative to the fixing frame and is fastened to the fixing frame through the fastening mechanism; the positioning frame is selectively detachably connected with the positioner or the anchor guide, two line band channels are established by the Kirschner wire through the Kirschner wire guide sleeve, the two line band channels are distributed on both sides of the ligament, the anchor is implanted through the anchor guide and sutured with the ligament, the two line band channels and the anchor are distributed in a triangular shape in the footprint area, the anchor channel and the line band channel are located on different mutually parallel planes, the two line band channels are parallel and coplanar, and the axis of the anchor channel and the axis of the line band channel are staggered on different planes; the femoral side and the tibial side are respectively provided with their own Kirschner wire guide sleeves; The anchor guide comprises an anchor guide frame and an anchor guide sleeve, wherein the anchor guide frame is detachably connected to the positioning frame, and an axial through hole is respectively provided on both sides of the anchor guide frame, and the anchor guide sleeve is plugged into one of the through holes; The Kirschner wire guide sleeve is provided with a first axial guide hole and a second guide hole group, wherein the second guide hole group includes a plurality of adjustment holes; The second guide hole group includes three adjustment holes, the diameters of the first guide holes and the adjustment holes are both 1.5-3 mm, and the spacing between the axes of the adjustment holes is 1.5 mm.

2. The anterior cruciate ligament repair device according to claim 1, characterized in that: The fastening mechanism comprises a fastening bolt, one end of which passes through the positioning frame and extends into the through slot, one end of the fastening bolt is provided with a pressing plate, and the other end of the fastening bolt is provided with a rotating handle.

3. The anterior cruciate ligament repair device according to claim 1, characterized in that: The positioning frame is provided with a button, and when the button is pressed, the positioner or anchor guide can be freely plugged in and out relative to the positioning frame, and when the button is released, the button is engaged with the positioner or anchor guide.

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