Tibia osteotomy positioning assembly, gap measuring assembly, osteotomy device and osteotomy system

Abstract

The invention discloses a tibia osteotomy positioning assembly, a gap measuring assembly, an osteotomy device and an osteotomy system.The tibia osteotomy positioning assembly comprises a mounting mechanism and at least one measuring piece, and the mounting mechanism is used for being connected with a tibia osteotomy block; the at least one measuring piece is used for being connected with the mounting mechanism, the mounting mechanism can place the at least one measuring piece at a first measuring position and a second measuring position, and the at least one measuring piece is located at different positions of the mounting mechanism when the at least one measuring piece is placed at the first measuring position and the second measuring position; the measuring piece located at the first measuring position is used for being inserted between the medial condyle of the femur and the articular surface of the tibia so as to measure the distance between the medial condyle and the articular surface and position the relative position of the tibia osteotomy block and the articular surface; the measuring piece at the second measuring position is used for being inserted between the lateral condyle of the femur and the articular surface of the tibia so as to measure the distance between the lateral condyle and the articular surface and position the relative position of the tibia osteotomy block and the articular surface.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a tibial osteotomy positioning assembly, a gap measurement assembly, an osteotomy device and an osteotomy system. Background Art

[0002] Proximal tibial osteotomy is a crucial step in knee replacement surgery, and the tibial osteotomy positioning assembly used to position the tibial osteotomy block is an essential instrument for tibial osteotomy. The existing tibial osteotomy positioning assembly measures the lowest point of tibial articular surface wear and determines the position of the tibial osteotomy block based on the position of the lowest point.

[0003] However, the existing tibial osteotomy positioning components cannot eliminate the influence of cartilage wear on the tibial osteotomy amount, resulting in inaccurate positioning of the tibial osteotomy block, which affects the surgical effect. Summary of the invention

[0004] The embodiments of the present application provide a tibial osteotomy positioning assembly, a gap measurement assembly, an osteotomy device and a system, aiming to solve the problem that the existing tibial osteotomy positioning assembly cannot eliminate the influence of cartilage wear on the tibial osteotomy amount, resulting in inaccurate positioning of the tibial osteotomy block, affecting the surgical effect.

[0005] The present application provides a tibial osteotomy positioning assembly, comprising:

[0006] A mounting mechanism, used for connecting with the tibial osteotomy block;

[0007] At least one measuring piece is used to be connected to the mounting mechanism, and the mounting mechanism can place the at least one measuring piece in a first measuring position and a second measuring position. The at least one measuring piece is located at different positions of the mounting mechanism when placed in the first measuring position and the second measuring position; the measuring piece in the first measuring position is used to be inserted between the medial condyle of the femur and the articular surface of the tibia to measure the distance between the medial condyle and the articular surface, and to locate the relative position of the tibial osteotomy block and the articular surface; the measuring piece in the second measuring position is used to be inserted between the lateral condyle of the femur and the articular surface of the tibia to measure the distance between the lateral condyle and the articular surface, and to locate the relative position of the tibial osteotomy block and the articular surface.

[0008] In some embodiments, the mounting mechanism includes a connector, and the connector is used to connect with the tibial osteotomy block;

[0009] Wherein, the mounting mechanism further comprises a first mounting member and a second mounting member, the first mounting member is used to connect with the at least one measuring member and place the at least one measuring member in the first measuring position; the second mounting member is used to connect with the at least one measuring member and place the at least one measuring member in the second measuring position; or,

[0010] Wherein, the mounting mechanism further includes a third mounting member, and the third mounting member is used to connect with the at least one measuring member, and the third mounting member can move relative to the connecting member to place the at least one measuring member in the first measuring position and the second measuring position.

[0011] In some embodiments, at least one of the first mounting member and the second mounting member is used to be detachably connected to the at least one measuring member; or,

[0012] The third mounting member is used for detachably connecting with the at least one measuring member.

[0013] In some embodiments, the first mounting member is provided with a first mounting hole, the first mounting hole penetrates the first mounting member along a first direction, the at least one measuring member can be inserted into the first mounting hole, so that the at least one measuring member is detachably connected to the first mounting member; the second mounting member is provided with a second mounting hole, the second mounting hole penetrates the second mounting member along the first direction, the at least one measuring member can be inserted into the second mounting hole, so that the at least one measuring member is detachably connected to the second mounting member; or,

[0014] The third mounting member is provided with a third mounting hole, and the third mounting hole penetrates the third mounting member along the first direction. The at least one measuring member can be inserted into the third mounting hole so that the at least one measuring member is detachably connected to the third mounting member.

[0015] In some embodiments, the first mounting member and the second mounting member are sequentially distributed along the second direction, and the first mounting member and the second mounting member can rotate together relative to the connecting member around the first rotation axis; the first direction, the second direction and the first rotation axis are substantially perpendicular to each other; or,

[0016] The third mounting member can be moved along the second direction relative to the connecting member to place the at least one measuring member in the first measuring position and the second measuring position; the third mounting member can be rotated around the second rotation axis relative to the connecting member, and the first direction, the second direction and the second rotation axis are basically perpendicular to each other.

[0017] In some embodiments, the mounting mechanism further comprises a first rotating shaft extending along the first rotation axis, the connecting member is connected to the first mounting member or the second mounting member via the first rotating shaft, the first mounting member and the second mounting member can rotate together around the first rotating shaft, or the connecting member can rotate around the first rotating shaft; or,

[0018] The mounting mechanism further comprises a second rotating shaft extending along the second rotation axis, the third mounting member is connected to the connecting member via the second rotating shaft, and the third mounting member or the connecting member can rotate around the second rotating shaft.

[0019] In some embodiments, the mounting mechanism further comprises a first locking member connected to the first mounting member, the first locking member being used to lock the at least one measuring member and the first mounting member; the mounting mechanism further comprises a second locking member connected to the second mounting member, the second locking member being used to lock the at least one measuring member and the second mounting member; or,

[0020] The mounting mechanism further comprises a third locking member connected to the third mounting member, wherein the third locking member is used to lock the at least one measuring member and the third mounting member.

[0021] In some embodiments, the first mounting member is provided with a first threaded hole connected to the first mounting hole, the first locking member includes a first knob and a first threaded rod, the first threaded rod is threadedly connected to the first threaded hole, the first knob is provided at an end of the first threaded rod away from the first mounting hole, and the end of the first threaded rod away from the first knob is used to abut against the at least one measuring member to lock the at least one measuring member and the first mounting member; the second mounting member is provided with a second threaded hole connected to the second mounting hole, the second locking member includes a second knob and a second threaded rod, the second threaded rod is threadedly connected to the second threaded hole, the second knob is provided at an end of the second threaded rod away from the second mounting hole, and the end of the second threaded rod away from the second knob is used to abut against the at least one measuring member to lock the at least one measuring member and the second mounting member; or,

[0022] The third mounting member is provided with a third threaded hole connected to the third mounting hole, and the third locking member includes a third knob and a third threaded rod, the third threaded rod is threadedly connected to the third threaded hole, the third knob is arranged at an end of the third threaded rod away from the third mounting hole, and the end of the third threaded rod away from the third knob is used to abut against the at least one measuring member to lock the at least one measuring member and the third mounting member.

[0023] In some embodiments, the first mounting member and the second mounting member are sequentially distributed along the second direction; in the second direction, the first mounting member and the second mounting member can move relative to each other; or,

[0024] The third mounting member is movably connected to the connecting member to place the measuring member in the first measuring position and the second measuring position.

[0025] In some embodiments, the mounting mechanism further includes a first slide rail extending along the second direction, the first mounting member is connected to the second mounting member via the first slide rail, and the first mounting member or the second mounting member is slidably mounted on the first slide rail; or,

[0026] The mounting mechanism further comprises a second slide rail connected to the connecting member, the second slide rail extends along the second direction, and the third mounting member is slidably mounted on the second slide rail.

[0027] In some embodiments, the mounting mechanism further comprises a first driving member connected to the first slide rail, the first driving member being connected to the first mounting member or the second mounting member to drive the first mounting member or the second mounting member to slide along the first slide rail; or,

[0028] The mounting mechanism further includes a second driving member connected to the second slide rail, and the second driving member is connected to the third mounting member to drive the third mounting member to slide along the second slide rail.

[0029] In some embodiments, the first driving member includes a first adjusting rod extending along the second direction, the outer periphery of the first adjusting rod is provided with a first spiral slide groove extending spirally along the second direction, the first adjusting rod can rotate around a third rotation axis relative to the first slide rail, and the third rotation axis extends along the second direction; the first mounting member or the second mounting member includes a first sliding portion, the first sliding portion is slidably mounted on the first spiral slide groove, and when the first adjusting rod rotates around the third rotation axis, the inner side surface of the first spiral slide groove pushes the first sliding portion to slide along the second direction; or,

[0030] The second driving member includes a second adjusting rod extending along the second direction, and the outer periphery of the second adjusting rod is provided with a second spiral groove extending along the second direction. The second adjusting rod can rotate around a fourth rotation axis relative to the second slide rail, and the fourth rotation axis extends along the second direction; the third mounting member includes a second sliding portion, and the second sliding portion is slidably mounted on the second spiral groove. When the second adjusting rod rotates around the fourth rotation axis, the inner side surface of the second spiral groove pushes the second sliding portion to slide along the second direction.

[0031] In some embodiments, the first slide rail includes a fourth mounting hole extending along the second direction, the first adjustment rod is rotatably mounted on the fourth mounting hole, and the inner circumference of the fourth mounting hole is provided with a first avoidance groove for avoiding the first sliding portion; or,

[0032] The second slide rail includes a fifth mounting hole extending along the second direction, the second adjusting rod is rotatably mounted on the fifth mounting hole, and the inner circumference of the fifth mounting hole is provided with a second avoidance groove for avoiding the second sliding part.

[0033] In some embodiments, at least one of the measuring pieces includes a first measuring portion, the first measuring portion is used to be inserted between the articular surface and the medial condyle to measure the distance between the articular surface and the medial condyle, and locate the relative position of the tibial osteotomy block and the medial condyle; or, the first measuring portion is used to be inserted between the articular surface and the lateral condyle to measure the distance between the articular surface and the lateral condyle, and locate the relative position of the tibial osteotomy block and the lateral condyle;

[0034] Wherein, the at least one measuring piece comprises a plurality of the measuring pieces, and the thickness of the first measuring parts of the plurality of the measuring pieces are different; and / or,

[0035] Wherein, the thickness of the first measuring part is adjustable.

[0036] In some embodiments, the first measuring portion includes an adjustment structure, a first contact portion and a second contact portion, the first contact portion is provided with a first contact surface on a side away from the second contact portion, the first contact surface is used to contact the medial condyle or the lateral condyle, the second contact portion is provided with a second contact surface on a side away from the first contact portion, the second contact surface is used to contact the articular surface;

[0037] The adjustment structure is used to connect with the first contact portion and the second contact portion, and drive the first contact portion and the second contact portion to move closer to or farther from each other, so as to adjust the distance between the first contact surface and the second contact surface.

[0038] In some embodiments, at least one of the first measuring parts is used to be inserted between the articular surface and the medial condyle, and to adapt the gap between the articular surface and the medial condyle, so as to measure the spacing between the medial condyle and the articular surface, and to locate the relative position of the tibial osteotomy block and the articular surface; or, at least one of the first measuring parts is used to be inserted between the articular surface and the lateral condyle, and to adapt the gap between the articular surface and the lateral condyle, so as to measure the spacing between the lateral condyle and the articular surface, and to locate the relative position of the tibial osteotomy block and the articular surface; and / or,

[0039] At least one of the first measuring parts is used to be inserted between the articular surface and the medial condyle, and the thickness of the first measuring part is adjusted to fit the gap between the articular surface and the medial condyle, so as to measure the spacing between the medial condyle and the articular surface, and locate the relative position of the tibial osteotomy block and the articular surface; or, at least one of the first measuring parts is used to be inserted between the articular surface and the lateral condyle, and the thickness of the first measuring part is adjusted to fit the gap between the articular surface and the lateral condyle, so as to measure the spacing between the lateral condyle and the articular surface, and locate the relative position of the tibial osteotomy block and the articular surface.

[0040] In some embodiments, the first measuring portion includes a first contact surface and a second contact surface relative to each other, the first contact surface is used to contact the medial condyle or the lateral condyle, the second contact surface is used to contact the articular surface, the first contact surface is an inner concave surface, and the second contact surface is an outer convex surface.

[0041] The present application also provides a gap measurement component, including:

[0042] A mounting mechanism, used for connecting with the tibial osteotomy block;

[0043] At least one measuring member, used to connect with the mounting mechanism, the at least one measuring member comprises a first measuring portion, the first measuring portion comprises a first contact surface and a second contact surface opposite to each other, the first contact surface is used to contact with the medial condyle or lateral condyle of the femur, the second contact surface is used to contact with the articular surface of the tibia, the first contact surface is an inner concave surface, and the second contact surface is an outer convex surface or a plane;

[0044] In which, the mounting mechanism can place the at least one measuring piece in a first measuring position and a second measuring position, and the at least one measuring piece is located at different positions of the mounting mechanism when placed in the first measuring position and the second measuring position; the measuring piece in the first measuring position is used to be inserted between the medial condyle of the femur and the articular surface of the tibia to measure the distance between the medial condyle and the articular surface; the measuring piece in the second measuring position is used to be inserted between the lateral condyle of the femur and the articular surface of the tibia to measure the distance between the lateral condyle and the articular surface.

[0045] The present application also provides a tibial osteotomy device, comprising:

[0046] A tibial osteotomy block, wherein the tibial osteotomy block is provided with a tibial osteotomy groove; and

[0047] The tibial osteotomy positioning assembly as described above, or the gap measurement assembly as described above, the mounting mechanism of the tibial osteotomy positioning assembly or the gap measurement assembly is connected to the tibial osteotomy block.

[0048] In some embodiments, the tibial osteotomy device also includes a distance adjustment component, which includes a relative fixed end and a connecting end, the fixed end of the distance adjustment component is used to be fixed to the human body, the connecting end of the distance adjustment component is used to be connected to the tibial osteotomy block, and the distance adjustment component is used to adjust the distance between the tibial osteotomy block and the fixed end.

[0049] An embodiment of the present application further provides an osteotomy system, which includes a tibial osteotomy device and a femoral extramedullary positioning osteotomy device; the tibial osteotomy device is the tibial osteotomy device described above.

[0050] In some embodiments, the femoral extramedullary positioning osteotomy device comprises:

[0051] A femoral osteotomy block, wherein the femoral osteotomy block is provided with a femoral osteotomy groove;

[0052] A gap measuring device, comprising at least one second measuring portion, the second measuring portion being used to be inserted between the medial condyle of the tibia and the femur to measure the distance between the tibia and the medial condyle, and the second measuring portion being used to be inserted between the tibia and the lateral condyle of the femur to measure the distance between the tibia and the lateral condyle;

[0053] The second measuring portion includes two first measuring surfaces distributed along the third direction, the two first measuring surfaces are used to contact the medial condyle and the lateral condyle in a one-to-one correspondence, and the first measuring surfaces are concave surfaces.

[0054] In some embodiments, the second measuring portion includes a second measuring surface; the second measuring surface is located on a side of the second measuring portion away from the first measuring surface;

[0055] Wherein, the second measuring surface is a plane, and the plane is used to contact with the plane after cutting of the tibia; or,

[0056] The second measuring surface is an inner concave surface, and the second measuring surface is used to contact the tibia.

[0057] In some embodiments, the two first measurement surfaces respectively have a closest point to the plane;

[0058] wherein the distance m between the two closest points in the third direction is greater than or equal to 25 mm and less than or equal to 75 mm; and / or,

[0059] One of the closest points is farther from the plane than the other closest point; the first measuring surface where the closest point farther from the plane is located is used to contact the medial condyle, and the first measuring surface where the closest point closer to the plane is located is used to contact the lateral condyle; and / or,

[0060] The angle α formed by the line connecting the two nearest points and the plane is greater than or equal to 1° and less than or equal to 9°; preferably, the angle α formed by the line connecting the two nearest points and the plane is greater than or equal to 3° and less than or equal to 5°.

[0061] In some embodiments, the first measuring surface comprises a first edge and a second edge opposite to each other, the first edge of the first measuring surface is closer to another first measuring surface than the second edge; a minimum distance n1 from the first edge to the plane is greater than a minimum distance n2 from the second edge to the plane; and / or,

[0062] The inner concave surface is a concave curved surface, the first measuring surface intersects with a plane perpendicular to the fourth direction to form a first intersection line, a radius of curvature R1 of the first intersection line of at least one of the first measuring surfaces is greater than or equal to 10 mm, and the third direction, the fourth direction and the thickness direction of the second measuring portion are substantially perpendicular to each other; and / or,

[0063] The inner concave surface is a concave curved surface, the first measuring surface intersects with a plane perpendicular to the third direction to form a second intersection line, and a curvature radius R2 of the second intersection line of at least one of the first measuring surfaces is greater than or equal to 10 mm.

[0064] The tibial osteotomy positioning assembly provided in the embodiment of the present application places at least one measuring piece in a first measuring position and a second measuring position through a mounting mechanism, so that the at least one measuring piece is located at different positions of the mounting mechanism when placed in the first measuring position and the second measuring position, and the measuring piece in the first measuring position can be inserted between the medial condyle of the femur and the articular surface of the tibia to measure the distance between the medial condyle and the articular surface, and locate the relative position of the tibial osteotomy block and the articular surface; the measuring piece in the second measuring position can be inserted between the lateral condyle of the femur and the articular surface of the tibia to measure the distance between the lateral condyle and the articular surface, and locate the relative position of the tibial osteotomy block and the articular surface. In this way, the tibial osteotomy positioning assembly inserts the measuring piece between the medial condyle and / or lateral condyle of the femur and the articular surface of the tibia to measure the distance between the medial condyle and / or lateral condyle and the articular surface, so as to facilitate the surgeon to determine the wear amount of the tibial articular surface to eliminate the influence of cartilage wear on the positioning of the tibial osteotomy block. Afterwards, the relative position of the tibial osteotomy block and the articular surface is located by the measuring piece, so that the osteotomy amount on the medial or lateral side of the tibia can be evaluated, which is beneficial to improving the surgical effect and solves the problem that the existing tibial osteotomy positioning assembly cannot eliminate the influence of cartilage wear on the tibial osteotomy amount, resulting in inaccurate positioning of the tibial osteotomy block and affecting the surgical effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0066] Figure 1 A schematic structural diagram of an embodiment of a tibial osteotomy device, a tibia, and a femur provided in an embodiment of the present application;

[0067] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0068] Figure 3 A schematic structural diagram of an embodiment of a tibial osteotomy positioning assembly provided in an embodiment of the present application;

[0069] Figure 4 A cross-sectional view of an embodiment of a tibial osteotomy positioning assembly provided in an embodiment of the present application, wherein the cross-sectional plane is perpendicular to the first direction;

[0070] Figure 5 A schematic structural diagram of an embodiment of a first driving member provided in an embodiment of the present application;

[0071] Figure 6 A cross-sectional view of another embodiment of the tibial osteotomy positioning assembly provided by an embodiment of the present application, wherein the section plane is perpendicular to the first direction;

[0072] Figure 7 A schematic diagram of the structure of an embodiment of a measuring device provided in an embodiment of the present application;

[0073] Figure 8 A schematic structural diagram of an embodiment of a femoral extramedullary positioning osteotomy device, a tibia, and a femur provided in an embodiment of the present application;

[0074] Fig. 9 A schematic diagram of the structure of an embodiment of a gap measuring device provided in an embodiment of the present application;

[0075] Fig.10 A cross-sectional view of an embodiment of the gap measuring device provided by an embodiment of the present application, wherein the cross-sectional plane is perpendicular to the fourth direction;

[0076] Fig.11 A cross-sectional view of an embodiment of the gap measuring device provided by an embodiment of the present application, wherein the cross-sectional plane is perpendicular to the third direction;

[0077] Fig.12 This is a cross-sectional view of an embodiment of the femoral extramedullary positioning osteotomy device provided in an embodiment of the present application, wherein the section plane is perpendicular to the fourth direction.

[0078] Osteotomy system 1; tibial osteotomy device 10; tibial osteotomy positioning assembly 11; mounting mechanism 110; connecting member 111; first rotating shaft 1111; second rotating shaft 1112; plug-in plate 1114; clamping plate 1115; clamping space 1116; first mounting member 112; first mounting hole 1121; first threaded hole 1122; first axial hole 1123; first locking member 113; first threaded rod 1131; first knob 1132; second mounting member 114; second mounting hole 1141; second threaded hole 1142; first sliding portion 1143; sliding hole 1144; second locking member 115; second knob 1151; second threaded rod 1152; first slide rail 116; fourth mounting hole 1161; first avoidance groove 1162; first driving member 117; first adjusting rod 1171; first spiral slide groove 1172; third mounting member 118; third shaft hole 1180; third mounting hole 1181; third threaded hole 1182; second slide rail 1183; second driving member 1184; second adjusting rod 1185; second spiral slide groove 1186; second sliding portion 1187; fifth mounting hole 1188; second avoidance groove 1189; third locking member 119; third knob 1191; third threaded rod 1192;

[0079] Measuring member 120; first measuring part 121; first contact surface 1211; second contact surface 1212; first contact part 1213; second contact part 1214; adjusting structure 122; tibial osteotomy block 12; tibial osteotomy groove 123; distance adjustment assembly 13; fixing end 131; ankle clamp 1311; connecting end 132; femur 300; medial condyle 310; lateral condyle 320; tibia 400; articular surface 410; first direction X; second direction Y; third direction H; thickness direction Z; fourth direction T; first rotation axis L1; second rotation axis L2; ​​third rotation axis L3; fourth rotation axis L4;

[0080] Femoral extramedullary positioning osteotomy device 20; gap measuring device 21; second measuring part 211; first measuring surface 2111; first edge 2112; second edge 2113; first intersection line 2114; second intersection line 2115; second measuring surface 2116; connecting part 212; connecting hole 2121; third slide groove 2122; side surface 2123; limiting part 2124; femoral osteotomy block 22; femoral osteotomy groove 221; sliding block 222; limiting groove 223. DETAILED DESCRIPTION

[0081] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0082] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" 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 application 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 a limitation on the present application. In addition, the terms "first" and "second" 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. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0083] In the description of this application, 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, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0084] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0085] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides various specific processes and examples of materials, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0086] The embodiments of the present application provide a tibial osteotomy positioning assembly, a gap measurement assembly, an osteotomy device and a system, which are described in detail below.

[0087] First, an embodiment of the present application provides a tibial osteotomy positioning assembly.

[0088] Figure 1 A schematic structural diagram of an embodiment of a tibial osteotomy device, a tibia, and a femur provided in an embodiment of the present application. Figure 2 for Figure 1 The enlarged view of A in the figure. Figure 1 and Figure 2 As shown, the tibial osteotomy device 10 includes a tibial osteotomy block 12 and a tibial osteotomy positioning assembly 11, and the tibial osteotomy block 12 is provided with a tibial osteotomy groove 123. The tibial osteotomy positioning assembly 11 is used to be connected to the tibial osteotomy block 12, and the tibial osteotomy block 12 is used to locate the relative position of the tibial osteotomy block 12 relative to the articular surface 410 of the tibia 400, so that the surgeon can pass the osteotomy tool through the tibial osteotomy groove 123 of the tibial osteotomy block 12 and accurately perform osteotomy.

[0089] The tibial osteotomy device 10 may further include a distance adjustment component 13, which includes a relative fixed end 131 and a connecting end 132. The fixed end 131 of the distance adjustment component 13 is used to be fixed to the human body, and the connecting end 132 of the distance adjustment component 13 is used to be connected to the tibial osteotomy block 12. The distance adjustment component 13 is used to adjust the distance between the tibial osteotomy block 12 and the fixed end 131. Thus, the position or height of the tibial osteotomy block 12 in the length direction of the tibia 400 can be adjusted by the distance adjustment component 13, and the adjusted position or height of the tibial osteotomy block 12 is kept stable relative to the tibia 400.

[0090] During the tibial osteotomy operation, the surgeon can fix the fixed end 131 of the distance adjustment component 13 to the ankle or other parts of the human body, so that the connecting end 132 and the fixed end 131 of the distance adjustment component 13 are sequentially distributed along the length direction of the tibia 400, and the connecting end 132 is closer to the knee joint than the fixed end 131. Afterwards, the distance between the connecting end 132 and the fixed end 131 is adjusted by the distance adjustment component 13, so as to adjust the distance between the tibial osteotomy block 12 connected to the connecting end 132 and the fixed end 131 in the length direction of the tibia 400.

[0091] The fixed end 131 of the distance adjustment component 13 can be provided with an ankle clamp 1311, which is used to clamp and fix the ankle of the human body, so that the fixed end 131 of the distance adjustment component 13 is fixed to the ankle of the human body. Of course, the fixed end 131 of the distance adjustment component 13 can also be fixed to the structure of the human body in other ways.

[0092] In some embodiments, Figure 2 and Figure 3 As shown, the tibial osteotomy positioning assembly 11 may include a mounting mechanism 110 and at least one measuring member 120, the mounting mechanism 110 is used to connect with the tibial osteotomy block 12, the at least one measuring member 120 is used to connect with the mounting mechanism 110, the mounting mechanism 110 can place the at least one measuring member 120 in a first measuring position and a second measuring position, and the at least one measuring member 120 is placed in the first measuring position (such as Figure 1 and Figure 2 The measuring member 120 in the first measuring position is used to be inserted between the medial condyle 310 of the femur 300 and the articular surface 410 of the tibia 400 to measure the distance between the medial condyle 310 and the articular surface 410, and to locate the relative position of the tibial osteotomy block 12 and the articular surface 410; the measuring member 120 in the second measuring position is used to be inserted between the lateral condyle 320 of the femur 300 and the articular surface 410 of the tibia 400 to measure the distance between the lateral condyle 320 and the articular surface 410, and to locate the relative position of the tibial osteotomy block 12 and the articular surface 410.

[0093] The tibial osteotomy positioning assembly 11 provided in the embodiment of the present application places at least one measuring piece 120 in a first measuring position and a second measuring position through the mounting mechanism 110, so that the at least one measuring piece 120 is located at different positions of the mounting mechanism 110 when placed in the first measuring position and the second measuring position, and the measuring piece 120 in the first measuring position can be inserted between the medial condyle 310 of the femur 300 and the articular surface 410 of the tibia 400 to measure the distance between the medial condyle 310 and the articular surface 410, and locate the relative position of the tibial osteotomy block 12 and the articular surface 410; the measuring piece 120 in the second measuring position can be inserted between the lateral condyle 320 of the femur 300 and the articular surface 410 of the tibia 400 to measure the distance between the lateral condyle 320 and the articular surface 410, and locate the relative position of the tibial osteotomy block 12 and the articular surface 410. In this way, the tibial osteotomy positioning component 11 inserts the measuring piece 120 between the medial condyle 310 and / or lateral condyle 320 of the femur 300 and the articular surface 410 of the tibia 400 to measure the distance between the medial condyle 310 and / or lateral condyle 320 and the articular surface 410, so as to facilitate the surgeon to determine the wear amount of the articular surface 410 of the tibia 400, so as to eliminate the influence of cartilage wear on the positioning of the tibial osteotomy block 12. Afterwards, the relative position of the tibial osteotomy block 12 and the articular surface 410 is positioned by the measuring piece 120, so as to evaluate the osteotomy amount on the inner or outer side of the tibia 400, which is beneficial to improving the surgical effect and solves the problem that the existing tibial osteotomy positioning component 11 cannot eliminate the influence of cartilage wear on the tibial osteotomy amount, resulting in inaccurate positioning of the tibial osteotomy block 12, thus affecting the surgical effect.

[0094] It should be noted that the number of the measuring piece 120 can be one or more. When the number of the measuring piece 120 is one, the measuring piece 120 can be detachably mounted at different positions of the mounting mechanism 110, so that the measuring piece 120 can be switched between the first measuring position and the second measuring position. Specifically, the measuring piece 120 can be detachably mounted at one position of the mounting mechanism 110, so that the mounting mechanism 110 can place the measuring piece 120 at the first measuring position, and then the measuring piece 120 is separated from the mounting mechanism 110, and the measuring piece 120 is detachably mounted at another position of the mounting mechanism 110, so that the mounting mechanism 110 can place the measuring piece 120 at the second measuring position.

[0095] When there are multiple measuring pieces 120, two measuring pieces 120 can be installed at different positions of the mounting mechanism 110, so that the mounting mechanism 110 can place one measuring piece 120 at the first measuring position and another measuring piece 120 at the second measuring position. Specifically, one measuring piece 120 can be detachably installed at one position of the mounting mechanism 110, so that the mounting mechanism 110 can place the measuring piece 120 at the first measuring position, and another measuring piece 120 can be detachably installed at another position of the mounting mechanism 110, so that the mounting mechanism 110 can place the other measuring piece 120 at the second measuring position. Among them, multiple measuring pieces 120 can be detachably connected or non-detachably connected to the mounting mechanism 110.

[0096] In actual surgery, the surgeon may place only one measuring piece 120 at the first measuring position through the mounting mechanism 110, or place only one measuring piece 120 at the second measuring position through the mounting mechanism 110, or place one measuring piece 120 at the first measuring position and another measuring piece 120 at the second measuring position through the mounting mechanism 110. In addition, the surgeon may place one measuring piece 120 at the first measuring position (or the second measuring position) through the mounting mechanism 110, and then place the measuring piece 120 at the second measuring position (or the first measuring position).

[0097] In some embodiments, Figure 3 As shown, the mounting mechanism 110 may include a connecting member 111, which is used to connect with the tibial osteotomy block 12, so that the mounting mechanism 110 is connected to the tibial osteotomy block 12. The connecting member 111 can be used to be detachably connected to the tibial osteotomy block 12, so that the mounting mechanism 110 is detachably connected to the tibial osteotomy block 12. After the tibial osteotomy block 12 is positioned by the tibial osteotomy positioning assembly 11, the mounting mechanism 110 of the tibial osteotomy positioning assembly 11 can be separated from the tibial osteotomy block 12, so that the surgeon can pass the osteotomy tool through the tibial osteotomy groove 123 of the tibial osteotomy block 12 and accurately perform osteotomy on the tibia 400, thereby avoiding the tibial osteotomy positioning assembly 11 from interfering with the osteotomy operation of the surgeon.

[0098] Specifically, the connector 111 includes a plug-in sheet 1114, which is used to be inserted into the tibial osteotomy groove 123 of the tibial osteotomy block 12, so that the connector 111 is detachably connected to the tibial osteotomy block 12. In addition, the connector 111 may also include a clamping sheet 1115 arranged relatively spaced from the plug-in sheet 1114, and a clamping space 1116 is formed between the clamping sheet 1115 and the plug-in sheet 1114. When the plug-in sheet 1114 is inserted into the tibial osteotomy groove 123 of the tibial osteotomy block 12, a part of the tibial osteotomy block 12 is clamped in the clamping space 1116 between the clamping sheet 1115 and the plug-in sheet 1114, which can make the connection between the connector 111 and the tibial osteotomy block 12 more stable.

[0099] In other embodiments, the connecting member 111 can be detachably connected to the tibial osteotomy block 12 by means of a snap-fit ​​structure, screw fixation, etc. In addition, the connecting member 111 can also be integrally connected to the tibial osteotomy block 12 or connected in other non-detachable ways, as long as the position of the measuring member 120 relative to the tibial osteotomy block 12 can be kept stable when the measuring member 120 is connected to the mounting mechanism 110.

[0100] In some embodiments, Figure 2 and Figure 3 As shown, the mounting mechanism 110 may include a first mounting member 112 and a second mounting member 114. The first mounting member 112 is used to connect with at least one measuring member 120 and place the at least one measuring member 120 in a first measuring position; the second mounting member 114 is used to connect with at least one measuring member 120 and place the at least one measuring member 120 in a second measuring position. Since the first mounting member 112 and the second mounting member 114 are located at different positions, when the measuring member 120 is connected to the first mounting member 112 or the second mounting member 114, the measuring member 120 can be located at different positions of the mounting mechanism 110 when it is placed in the first measuring position and the second measuring position.

[0101] At least one of the first mounting member 112 and the second mounting member 114 can be used for detachable connection with at least one measuring member 120. Thus, at least one measuring member 120 can be detachably connected to one of the first mounting member 112 and the second mounting member 114 to place at least one measuring member 120 in one of the first measuring position and the second measuring position, and then, at least one measuring member 120 is removed and connected to the other of the first mounting member 112 and the second mounting member 114, so as to place at least one measuring member 120 in the other of the first measuring position and the second measuring position.

[0102] It should be noted that both the first mounting member 112 and the second mounting member 114 can be detachably connected to at least one measuring member 120, or only the first mounting member 112 or the second mounting member 114 can be detachably connected to at least one measuring member 120. Of course, the former can make the disassembly and installation of the measuring member 120 more convenient, so that the operating staff can switch the measuring member 120 between the first measuring position and the second measuring position, which is conducive to reducing the number of measuring members 120.

[0103] In some embodiments, Figure 3 and Figure 4 As shown, a first mounting hole 1121 may be provided in the first mounting member 112, and the first mounting hole 1121 penetrates the first mounting member 112 along the first direction X, and at least one measuring member 120 may be inserted into the first mounting hole 1121, so that at least one measuring member 120 is detachably connected to the first mounting member 112. By providing the first mounting hole 1121 in the first mounting member 112, and inserting the measuring member 120 into the first mounting hole 1121, the measuring member 120 can be detachably connected to the first mounting member 112, and the connection and disassembly of the measuring member 120 and the first mounting member 112 can be made more convenient.

[0104] Among them, the installation mechanism 110 can also include a first locking member 113 connected to the first installation member 112, and the first locking member 113 is used to lock at least one measuring member 120 and the first installation member 112, so that after the measuring member 120 is connected to the first installation member 112, the position of the measuring member 120 relative to the first installation member 112 remains stable, so that the installation mechanism 110 can more accurately place the measuring member 120 in the first measuring position.

[0105] Specifically, a first threaded hole 1122 connected to the first mounting hole 1121 can be opened in the first mounting member 112, and the first locking member 113 includes a first knob 1132 and a first threaded rod 1131. The first threaded rod 1131 is threadedly connected to the first threaded hole 1122. The first knob 1132 is arranged at one end of the first threaded rod 1131 away from the first mounting hole 1121. The end of the first threaded rod 1131 away from the first knob 1132 is used to abut against at least one measuring member 120 to lock the at least one measuring member 120 and the first mounting member 112. Therefore, the surgeon applies a rotational force to the first knob 1132 so that the first knob 1132 drives the first threaded rod 1131 to rotate in the first threaded hole 1122, thereby moving the first threaded rod 1131 along the extension direction of the first threaded hole 1122, so that the end of the first threaded rod 1131 close to the first mounting hole 1121 abuts against the measuring piece 120 inserted into the first mounting hole 1121, so that there is a large pressure between the first threaded rod 1131 and the measuring piece 120, as well as between the measuring piece 120 and the inner circumferential surface of the first mounting hole 1121, so that the position of the measuring piece 120 relative to the first mounting piece 112 remains stable, and the measuring piece 120 is not easy to produce relative movement in the first mounting hole 1121.

[0106] In other embodiments, the first mounting member 112 may be connected to the measuring member 120 by means of snap connection, screw connection, pin connection, etc., which may be specifically determined according to the structures of the first mounting member 112 and the measuring member 120 .

[0107] In some embodiments, Figure 3 and Figure 4 As shown, a second mounting hole 1141 may be provided in the second mounting member 114, and the second mounting hole 1141 penetrates the second mounting member 114 along the first direction X. At least one measuring member 120 may be inserted into the second mounting hole 1141, so that at least one measuring member 120 is detachably connected to the second mounting member 114. By providing the second mounting hole 1141 in the second mounting member 114, and inserting the measuring member 120 into the second mounting hole 1141, the measuring member 120 can be detachably connected to the second mounting member 114, so that the connection and disassembly of the measuring member 120 and the second mounting member 114 can be more convenient.

[0108] Among them, the installation mechanism 110 can also include a second locking member 115 connected to the second installation member 114, and the second locking member 115 is used to lock at least one measuring member 120 and the second installation member 114, so that after the measuring member 120 is connected to the second installation member 114, the position of the measuring member 120 relative to the second installation member 114 remains stable, so that the installation mechanism 110 can more accurately place the measuring member 120 in the second measuring position.

[0109] Specifically, a second threaded hole 1142 connected to the second mounting hole 1141 can be opened in the second mounting member 114, and the second locking member 115 includes a second knob 1151 and a second threaded rod 1152. The second threaded rod 1152 is threadedly connected to the second threaded hole 1142. The second knob 1151 is arranged at one end of the second threaded rod 1152 away from the second mounting hole 1141, and the end of the second threaded rod 1152 away from the second knob 1151 is used to abut against at least one measuring member 120 to lock the at least one measuring member 120 and the second mounting member 114. Therefore, the surgeon applies a rotational force to the second knob 1151 so that the second knob 1151 drives the second threaded rod 1152 to rotate in the second threaded hole 1142, thereby moving the second threaded rod 1152 along the extension direction of the second threaded hole 1142, so that the end of the second threaded rod 1152 close to the second mounting hole 1141 abuts against the measuring piece 120 inserted into the second mounting hole 1141, so that there is a large pressure between the second threaded rod 1152 and the measuring piece 120, as well as between the measuring piece 120 and the inner circumferential surface of the second mounting hole 1141, so that the position of the measuring piece 120 relative to the second mounting piece 114 remains stable, and the measuring piece 120 is not easy to produce relative movement in the second mounting hole 1141.

[0110] In other embodiments, the second mounting member 114 may be connected to the measuring member 120 by means of snap connection, screw connection, pin connection, etc., which may be determined according to the structures of the second mounting member 114 and the measuring member 120 .

[0111] In some embodiments, Figure 3 and Figure 4 As shown, the first mounting member 112 and the second mounting member 114 can be distributed in sequence along the second direction Y, and the first mounting member 112 and the second mounting member 114 can rotate together relative to the connecting member 111 around the first rotation axis L1; the first direction X, the second direction Y and the first rotation axis L1 are substantially perpendicular to each other. Therefore, when the measuring member 120 is connected to the first mounting member 112, the first mounting member 112 and the second mounting member 114 can be rotated together relative to the connecting member 111 around the first rotation axis L1 by a certain angle, so that the first mounting member 112 and the medial condyle 310 of the femur 300 are staggered by a certain angle, so as to avoid the first mounting member 112 and the medial condyle 310 of the femur 300 being too close to each other, so that the medial condyle 310 is located on the moving path of the measuring member 120, so that the measuring member 120 is disturbed by the medial condyle 310 of the femur 300 during the connection process between the measuring member 120 and the first mounting member 112.

[0112] Similarly, when the measuring piece 120 is connected to the second mounting piece 114, the first mounting piece 112 and the second mounting piece 114 can be rotated relative to the connecting piece 111 by a certain angle around the first rotation axis L1, so that the second mounting piece 114 and the lateral condyle 320 of the femur 300 are staggered by a certain angle, so as to avoid the second mounting piece 114 and the lateral condyle 320 of the femur 300 being too close to each other, causing the lateral condyle 320 to be located on the moving path of the measuring piece 120, so that the measuring piece 120 is disturbed by the lateral condyle 320 of the femur 300 during the connection process between the measuring piece 120 and the second mounting piece 114.

[0113] In some embodiments, Figure 4 As shown, the mounting mechanism 110 may further include a first rotating shaft 1111 extending along the first rotation axis L1, and the connecting member 111 is connected to the first mounting member 112 or the second mounting member 114 via the first rotating shaft 1111, and the first mounting member 112 and the second mounting member 114 may rotate together around the first rotating shaft 1111, thereby causing the first mounting member 112 and the second mounting member 114 to rotate together relative to the connecting member 111 around the first rotation axis L1.

[0114] Specifically, the first mounting member 112 is provided with a first axial hole 1123 at one end along the first rotation axis L1, and the first axial hole 1123 extends along the first rotation axis L1. The first axial hole 1123 and the first threaded hole 1122 are distributed on both sides of the first mounting hole 1121. The plug-in piece 1114 and the clamping piece 1115 of the connecting member 111 are distributed in sequence along the first rotation axis L1. The plug-in piece 1114 and the clamping piece 1115 are respectively substantially perpendicular to the first rotation axis L1. The first rotating shaft 1111 extends along the first rotation axis L1, and the first rotating shaft 1111 extends from the side of the clamping piece 1115 away from the plug-in piece 1114. The first rotating shaft 1111 is rotatably mounted in the first axial hole 1123, so that the connecting member 111 is rotatably connected to the first mounting member 112 through the first rotating shaft 1111, and the first connecting member 111 can rotate around the first rotating shaft 1111. Since the first connecting member 111 is connected to the second connecting member 111 , when the first connecting member 111 rotates around the first rotating shaft 1111 , the second connecting member 111 can be driven to rotate around the first rotating shaft 1111 together.

[0115] It should be noted that when the connecting member 111 is rotationally connected to the second mounting member 114 through the first rotating shaft 1111, the rotational connection method of the first rotating shaft 1111 and the second mounting member 114 is basically the same as the rotational connection method of the first rotating shaft 1111 and the first mounting member 112 mentioned above, and will not be repeated here.

[0116] In other embodiments, the connecting member 111 may be rotated around the first rotating shaft 1111, so that the first mounting member 112 and the second mounting member 114 may rotate together relative to the connecting member 111 around the first rotating axis L1. Specifically, a second shaft hole extending along the first rotating axis L1 may be provided in the connecting member 111, the first rotating shaft 1111 connected to the first connecting member 111 or the second connecting member 111 extends along the first rotating axis L1, and the first rotating shaft 1111 is rotatably mounted in the second shaft hole, so that the connecting member 111 can rotate around the rotating shaft.

[0117] In some embodiments, Figure 3 and Figure 4 As shown, the first mounting member 112 and the second mounting member 114 can be distributed in sequence along the second direction Y. Moreover, the first mounting member 112 and the second mounting member 114 can move relatively in the second direction Y. Thus, the distance between the first mounting member 112 and the second mounting member 114 in the second direction Y can be adjusted according to the spacing between the medial condyle 310 and the lateral condyle 320 of the femur 300 of different patients, so that the measuring member 120 connected to the first mounting member 112 corresponds to the medial condyle 310 of the femur 300, and the measuring member 120 connected to the second mounting member 114 corresponds to the lateral condyle 320 of the femur 300.

[0118] The mounting mechanism 110 may further include a first slide rail 116 extending along the second direction Y, the first mounting member 112 is connected to the second mounting member 114 via the first slide rail 116, and the first mounting member 112 or the second mounting member 114 is slidably mounted on the first slide rail 116. When the first mounting member 112 or the second mounting member 114 slides relatively along the first slide rail 116, the first mounting member 112 and the second mounting member 114 can move relatively stably in the second direction Y.

[0119] In some embodiments, Figure 4 and Figure 5 As shown, the mounting mechanism 110 may further include a first driving member 117 connected to the first slide rail 116, and the first driving member 117 is connected to the first mounting member 112 to drive the first mounting member 112 to slide along the first slide rail 116. When the first mounting member 112 is slidably mounted on the first slide rail 116, the first driving member 117 drives the first mounting member 112 to slide along the first slide rail 116, so that the first mounting member 112 can be more easily moved closer to or away from the second mounting member 114, and the distance between the first mounting member 112 and the second mounting member 114 can be adjusted more accurately.

[0120] Alternatively, the first driving member 117 may be connected to the second mounting member 114 to drive the second mounting member 114 to slide along the first slide rail 116. When the second mounting member 114 is slidably mounted on the first slide rail 116, the first driving member 117 drives the second mounting member 114 to slide along the first slide rail 116, so that the second mounting member 114 can be more easily moved closer to or away from the first mounting member 112, and the distance between the first mounting member 112 and the second mounting member 114 can be adjusted more accurately.

[0121] Specifically, Figure 3 and Figure 4 As shown, the first driving member 117 may include a first adjusting rod 1171 extending along the second direction Y, and the outer periphery of the first adjusting rod 1171 is provided with a first spiral slide groove 1172 spirally extending along the second direction Y, and the first adjusting rod 1171 can rotate around the third rotation axis L3 relative to the first slide rail 116, and the third rotation axis L3 extends along the second direction Y. The second mounting member 114 includes a first sliding portion 1143, and the first sliding portion 1143 is slidably mounted on the first spiral slide groove 1172. When the first adjusting rod 1171 rotates around the third rotation axis L3, the inner side surface of the first spiral slide groove 1172 pushes the first sliding portion 1143 to slide along the second direction Y.

[0122] It can be understood that by opening a first spiral groove 1172 extending spirally along the second direction Y on the outer periphery of the first adjusting rod 1171 extending along the second direction Y, and sliding the first sliding portion 1143 of the second mounting member 114 on the first spiral groove 1172, when the surgeon drives the first adjusting rod 1171 to rotate around the third rotation axis L3, the inner side surface of the first spiral groove 1172 can abut against the first sliding portion 1143 of the second mounting member 114, and push the first sliding portion 1143 of the second mounting member 114 to slide along the second direction Y, thereby driving the second mounting member 114 to move along the second direction Y, so that the second mounting member 114 is close to or away from the first mounting member 112.

[0123] In other embodiments, when the first mounting member 112 is slidably connected to the first slide rail 116, the first mounting member 112 may include a first sliding portion 1143, and the first sliding portion 1143 of the first mounting member 112 is slidably mounted on the first spiral slide groove 1172 in a manner substantially the same as the manner in which the first sliding portion 1143 of the second mounting member 114 is slidably mounted on the first spiral slide groove 1172. When the surgeon drives the first adjustment rod 1171 to rotate around the third rotation axis L3, the inner side surface of the first spiral slide groove 1172 can abut against the first sliding portion 1143 of the first mounting member 112, and push the first sliding portion 1143 of the first mounting member 112 to slide along the second direction Y, thereby driving the first mounting member 112 to move along the second direction Y, so that the first mounting member 112 approaches or moves away from the second mounting member 114.

[0124] In some embodiments, the first slide rail 116 may include a fourth mounting hole 1161 extending along the second direction Y, and the first adjustment rod 1171 may be rotatably mounted in the fourth mounting hole 1161 , so that the first adjustment rod 1171 is more stably rotatably connected to the first slide rail 116 .

[0125] The first avoidance groove 1162 for avoiding the first sliding part 1143 can be opened on the inner circumferential surface of the fourth mounting hole 1161. Therefore, when the first adjusting rod 1171 rotates around the third rotation axis L3, the inner side surface of the first spiral slide groove 1172 abuts against the first sliding part 1143 of the first mounting member 112, and pushes the first sliding part 1143 of the first mounting member 112 to slide along the second direction Y, the first slide rail 116 can avoid the first sliding part 1143, so that the first sliding part 1143 slides along the second direction Y more smoothly.

[0126] Specifically, a sliding hole 1144 is provided at one end of the second mounting member 114 and penetrates along the second direction Y. The first slide rail 116 is slidably installed in the sliding hole 1144, so that the second mounting member 114 is slidably connected to the first slide rail 116. The first avoidance groove 1162 is provided at a side of the fourth mounting hole 1161 away from the second mounting hole 1141. The first sliding portion 1143 is separately provided with the second mounting member 114. After the first slide rail 116 is slidably installed in the sliding hole 1144, the first sliding portion 1143 is connected with the second mounting member 114, so that the first sliding portion 1143 passes through the first avoidance groove 1162 and is inserted into the first spiral slide groove 1172. The first sliding portion 1143 can pass through the inner wall of the sliding hole 1144 and the first avoidance groove 1162 from the end surface of the end of the second mounting member 114 where the sliding hole 1144 is provided, and is inserted into the first spiral slide groove 1172. The first sliding portion 1143 and the second mounting member 114 may be detachably connected or non-detachably connected.

[0127] In other embodiments, Figure 6 As shown, the mounting mechanism 110 may further include a third mounting member 118, which is used to connect to at least one measuring member 120. The third mounting member 118 is movable relative to the connecting member 111 to place the at least one measuring member 120 in the first measuring position and the second measuring position.

[0128] The third mounting member 118 can be used to be detachably connected to at least one measuring member 120. After the operation is completed, the third mounting member 118 can be separated from the measuring member 120, which is beneficial to reducing the overall volume of the tibial osteotomy positioning assembly 11 and making the storage space of the tibial osteotomy positioning assembly 11 smaller. Moreover, when there are multiple measuring members 120, different types of measuring members 120 can be conveniently connected to the third mounting member 118 in sequence, so that different types of measuring members 120 can be replaced to measure the distance between the articular surface 410 and the medial condyle 310 or the lateral condyle 320.

[0129] In some embodiments, a third mounting hole 1181 may be provided in the third mounting member 118, the third mounting hole 1181 penetrates the third mounting member 118 along the first direction X, and at least one measuring member 120 may be inserted into the third mounting hole 1181, so that at least one measuring member 120 is detachably connected to the third mounting member 118. By providing the third mounting hole 1181 in the third mounting member 118 and inserting the measuring member 120 into the third mounting hole 1181, the measuring member 120 can be detachably connected to the third mounting member 118, which can make the connection and disassembly of the measuring member 120 and the third mounting member 118 more convenient.

[0130] Among them, the mounting mechanism 110 also includes a third locking member 119 connected to the third mounting member 118, and the third locking member 119 is used to lock at least one measuring member 120 and the third mounting member 118, so that after the measuring member 120 is connected to the third mounting member 118, the position of the measuring member 120 relative to the third mounting member 118 remains stable, so that the third mounting member 118 can more accurately place the measuring member 120 in the first measuring position and the second measuring position.

[0131] Specifically, a third threaded hole 1182 connected to the third mounting hole 1181 can be opened in the third mounting member 118, and the third locking member 119 includes a third knob 1191 and a third threaded rod 1192. The third threaded rod 1192 is threadedly connected to the third threaded hole 1182. The third knob 1191 is arranged at one end of the third threaded rod 1192 away from the third mounting hole 1181. The end of the third threaded rod 1192 away from the third knob 1191 is used to abut against at least one measuring member 120 to lock the at least one measuring member 120 and the third mounting member 118. Therefore, the surgeon applies a rotational force to the third knob 1191 so that the third knob 1191 drives the third threaded rod 1192 to rotate in the third threaded hole 1182, thereby moving the third threaded rod 1192 along the extension direction of the third threaded hole 1182, so that the end of the third threaded rod 1192 close to the third mounting hole 1181 abuts against the measuring piece 120 inserted into the third mounting hole 1181, so that there is a large pressure between the third threaded rod 1192 and the measuring piece 120, as well as between the measuring piece 120 and the inner circumferential surface of the third mounting hole 1181, so that the position of the measuring piece 120 relative to the third mounting piece 118 remains stable, and the measuring piece 120 is not easy to produce relative movement in the third mounting hole 1181.

[0132] In other embodiments, the third mounting member 118 may be connected to the measuring member 120 by means of snap connection, screw connection, pin connection, etc., which may be specifically determined according to the structures of the third mounting member 118 and the measuring member 120 .

[0133] In some embodiments, the third mounting member 118 can be movably connected to the connecting member 111 to place the measuring member 120 in the first measuring position and the second measuring position. Alternatively, the third mounting member 118 can be rotatably connected to the connecting member 111 to place the measuring member 120 in the first measuring position and the second measuring position. Of course, the former can enable the third mounting member 118 to drive the measuring member 120 to move between the first measuring position and the second measuring position more quickly.

[0134] In some embodiments, the third mounting member 118 can be moved relative to the connecting member 111 along the second direction Y to place at least one measuring member 120 in the first measuring position and the second measuring position, and the first direction X and the second direction Y are substantially perpendicular. When the mounting mechanism 110 is connected to the tibial osteotomy block 12, the second direction Y is consistent with the distribution direction of the medial condyle 310 and the lateral condyle 320 of the femur 300. By moving the third mounting member 118 relative to the connecting member 111 along the second direction Y substantially perpendicular to the first direction X, the measuring member 120 connected to the third mounting member 118 can be driven to move along the distribution direction of the medial condyle 310 and the lateral condyle 320 of the femur 300, thereby accurately placing the measuring member 120 in the first measuring position and the second measuring position.

[0135] The mounting mechanism 110 may further include a second slide rail 1183 connected to the connecting member 111, the second slide rail 1183 extending along the second direction Y, and the third mounting member 118 slidably mounted on the second slide rail 1183, so that the third mounting member 118 can more stably move relative to the connecting member 111 along the second direction Y. When the third mounting member 118 moves relative to the second slide rail 1183, the measuring member 120 can be driven to switch between the first measuring position and the second measuring position.

[0136] In some embodiments, the third mounting member 118 can also rotate relative to the connecting member 111 around the second rotation axis L2, and the first direction X, the second direction Y and the second rotation axis L2 are substantially perpendicular to each other. When the measuring member 120 is connected to the third mounting member 118, the third mounting member 118 can be rotated relative to the connecting member 111 around the second rotation axis L2 by a certain angle, so that the third mounting member 118 and the medial condyle 310 or the lateral condyle 320 of the femur 300 are staggered by a certain angle, so as to avoid the third mounting member 118 and the medial condyle 310 or the lateral condyle 320 of the femur 300 being too close to each other, thereby causing the measuring member 120 to be disturbed by the medial condyle 310 of the femur 300 during the connection process between the measuring member 120 and the third mounting member 118.

[0137] Among them, the installation mechanism 110 also includes a second rotating shaft 1112 extending along the second rotation axis L2, and the third installation member 118 is connected to the connecting member 111 through the second rotating shaft 1112. The third installation member 118 or the connecting member 111 can rotate around the second rotating shaft 1112, so that the third installation member 118 rotates relative to the connecting member 111 around the first rotation axis L1.

[0138] Specifically, the second rotating shaft 1112 extends along the second rotation axis L2 from the side of the clamping piece 1115 of the connecting member 111 away from the plug-in piece 1114. The second slide rail 1183 is provided with a third shaft hole 1180 extending along the second rotation axis L2, and the second rotating shaft 1112 is rotatably mounted on the third shaft hole 1180, so that the second slide rail 1183 can rotate around the second rotating shaft 1112, thereby driving the third mounting member 118 to rotate around the second rotating shaft 1112, so that the third mounting member 118 rotates relative to the connecting member 111 around the first rotation axis L1. Of course, the second rotating shaft 1112 can also be rotatably connected to the connecting member 111, so that the connecting member 111 can rotate around the second rotating shaft 1112, so that the third mounting member 118 rotates relative to the connecting member 111 around the first rotation axis L1.

[0139] In some embodiments, the mounting mechanism 110 further includes a second driving member 1184 connected to the second slide rail 1183, and the second driving member 1184 is connected to the third mounting member 118 to drive the third mounting member 118 to slide along the second slide rail 1183. When the third mounting member 118 is slidably mounted on the second slide rail 1183, the third driving member drives the third mounting member 118 to slide along the second slide rail 1183, so that the third mounting member 118 can be moved more easily along the second direction Y, and the moving distance of the third mounting member 118 can be accurately adjusted.

[0140] Specifically, the second driving member 1184 may include a second adjusting rod 1185 extending along the second direction Y, and the outer periphery of the second adjusting rod 1185 is provided with a second spiral slide groove 1186 extending along the second direction Y. The second adjusting rod 1185 can rotate around the fourth rotation axis L4 relative to the second slide rail 1183, and the fourth rotation axis L4 extends along the second direction Y. The third mounting member 118 includes a second sliding portion 1187, and the second sliding portion 1187 is slidably mounted on the second spiral slide groove 1186. When the second adjusting rod 1185 rotates around the fourth rotation axis L4, the inner side surface of the second spiral slide groove 1186 pushes the second sliding portion 1187 to slide along the second direction Y.

[0141] It can be understood that by providing a second spiral groove 1186 extending spirally along the second direction Y on the outer periphery of the second adjustment rod 1185 extending along the second direction Y, and slidably installing the second sliding portion 1187 of the third mounting member 118 on the second spiral groove 1186, when the surgeon drives the second adjustment rod 1185 to rotate around the fourth rotation axis L4, the inner surface of the second spiral groove 1186 can abut against the second sliding portion 1187 of the third mounting member 118, and push the second sliding portion 1187 of the third mounting member 118 to slide along the second direction Y, thereby driving the third mounting member 118 to move along the second direction Y.

[0142] In some embodiments, the second slide rail 1183 may include a fifth mounting hole 1188 extending along the second direction Y, and the second adjustment rod 1185 may be rotatably mounted in the fifth mounting hole 1188, so that the second adjustment rod 1185 and the second slide rail 1183 are more stably rotationally connected.

[0143] A second avoidance groove 1189 for avoiding the second sliding portion 1187 may be provided on the inner circumferential surface of the fifth mounting hole 1188. Thus, when the second adjusting rod 1185 rotates around the fourth rotation axis L4, the inner side surface of the second spiral slide groove 1186 abuts against the second sliding portion 1187 of the third mounting member 118, and pushes the second sliding portion 1187 of the third mounting member 118 to slide along the second direction Y, the second slide rail 1183 can avoid the second sliding portion 1187, so that the second sliding portion 1187 slides along the second direction Y more smoothly.

[0144] In some embodiments, at least one measuring member 120 includes a first measuring portion 121, which is used to be inserted between the articular surface 410 and the medial condyle 310 to measure the distance between the articular surface 410 and the medial condyle 310 and locate the relative position of the tibial osteotomy block 12 and the medial condyle 310. The at least one measuring member 120 includes a plurality of measuring members 120, and the thickness of the first measuring portions 121 of the plurality of measuring members 120 is different.

[0145] Among them, at least one first measuring part 121 can be used to be inserted between the articular surface 410 and the medial condyle 310, and adapt the gap between the articular surface 410 and the medial condyle 310 to measure the distance between the medial condyle 310 and the articular surface 410, and locate the relative position of the tibial osteotomy block 12 and the articular surface 410.

[0146] It should be noted that after inserting the first measuring portion 121 of a measuring piece 120 between the articular surface 410 and the medial condyle 310, the surgeon can determine based on experience whether the thickness of the first measuring portion 121 is adapted to the gap between the articular surface 410 and the medial condyle 310. If so, the overall thickness of the first measuring portion 121 of the measuring piece 120 is substantially consistent with the gap between the medial condyle 310 and the articular surface 410, thereby achieving measurement of the gap between the medial condyle 310 and the articular surface 410. If not, the surgeon can replace the measuring piece 120 with a different thickness of the first measuring portion 121 until the first measuring portion 121 of the measuring piece 120 is adapted to the gap between the articular surface 410 and the medial condyle 310, thereby achieving measurement of the gap between the medial condyle 310 and the articular surface 410.

[0147] Similarly, the first measuring portion 121 is used to be inserted between the articular surface 410 and the lateral condyle 320 to measure the distance between the articular surface 410 and the lateral condyle 320, and to locate the relative position of the tibial osteotomy block 12 and the lateral condyle 320. Among them, at least one first measuring portion 121 can be used to be inserted between the articular surface 410 and the lateral condyle 320, and to adapt the gap between the articular surface 410 and the lateral condyle 320, so as to measure the distance between the lateral condyle 320 and the articular surface 410, and to locate the relative position of the tibial osteotomy block 12 and the articular surface 410.

[0148] The method of measuring the distance between the lateral condyle 320 and the articular surface 410 by at least one measuring piece 120 and positioning the relative position of the tibial osteotomy block 12 and the articular surface 410 is basically the same as the above-mentioned method of measuring the distance between the medial condyle 310 and the articular surface 410 by at least one measuring piece 120 and positioning the relative position of the tibial osteotomy block 12 and the articular surface 410, and will not be repeated here.

[0149] In other embodiments, the thickness of the first measuring portion 121 of the measuring member 120 can be adjusted. The first measuring portion 121 of the measuring member 120 can be adjusted to different thicknesses, so that when the first measuring portion 121 of the measuring member 120 measures the lateral condyle 320 or the distance between the lateral condyle 320 and the articular surface 410, there is no need to replace a different measuring member 120, which is conducive to improving measurement efficiency and reducing the number of measuring members 120.

[0150] When measuring the distance between the medial condyle 310 and the articular surface 410 by the first measuring part 121 of the measuring piece 120, at least one first measuring part 121 can be inserted between the articular surface 410 and the medial condyle 310, and the thickness of the first measuring part 121 is adjusted to adapt to the gap between the articular surface 410 and the medial condyle 310 to measure the distance between the medial condyle 310 and the articular surface 410, and locate the relative position of the tibial osteotomy block 12 and the articular surface 410.

[0151] When measuring the distance between the lateral condyle 320 and the articular surface 410 by the first measuring part 121 of the measuring piece 120, at least one first measuring part 121 can be inserted between the articular surface 410 and the lateral condyle 320, and the thickness of the first measuring part 121 is adjusted to adapt to the gap between the articular surface 410 and the lateral condyle 320 to measure the distance between the lateral condyle 320 and the articular surface 410, and locate the relative position of the tibial osteotomy block 12 and the articular surface 410.

[0152] In some embodiments, Figure 7 As shown, the first measuring portion 121 may include a first contact portion 1213 and a second contact portion 1214, wherein a first contact surface 1211 is provided on a side of the first contact portion 1213 away from the second contact portion 1214, and the first contact surface 1211 is used to contact the medial condyle 310 or the lateral condyle 320, and a second contact surface 1212 is provided on a side of the second contact portion 1214 away from the first contact portion 1213, and the second contact surface 1212 is used to contact the articular surface 410. The distance between the first contact surface 1211 and the second contact surface 1212 is the thickness of the first measuring portion 121.

[0153] Among them, the first measuring part 121 can also include an adjustment structure 122, which is used to connect with the first contact part 1213 and the second contact part 1214, and drive the first contact part 1213 and the second contact part 1214 to move closer to or away from each other, so as to adjust the distance between the first contact surface 1211 and the second contact surface 1212, thereby realizing the adjustment of the thickness of the first measuring part 121.

[0154] Specifically, the first contact portion 1213 and the second contact portion 1214 are arranged relatively spaced apart, and the adjustment structure 122 includes a slider slidably installed between the first contact portion 1213 and the second contact portion 1214, and the slider slides relative to the first contact portion 1213 and the second contact portion 1214 to push the first contact portion 1213 and the second contact portion 1214 away from each other, thereby adjusting the distance between the first contact surface 1211 and the second contact surface 1212.

[0155] In some embodiments, the first measuring portion 121 includes a first contact surface 1211 and a second contact surface 1212 opposite to each other, wherein the first contact surface 1211 is used to contact the medial condyle 310 or the lateral condyle 320, and the second contact surface 1212 is used to contact the articular surface 410, and the first contact surface 1211 is an inner concave surface. The first contact surface 1211 may be an arcuate surface or a curved surface.

[0156] It can be understood that since the medial condyle 310 and the lateral condyle 320 of the femur 300 are outward convex surfaces, by making the first contact surface 1211 of the first measuring portion 121 used to contact the medial condyle 310 or the lateral condyle 320 an inward concave surface, the shape of the first contact surface 1211 can be more adapted to the shape of the medial condyle 310 or the lateral condyle 320, which is beneficial to improving the accuracy of the first measuring portion 121 in measuring the distance between the articular surface 410 and the medial condyle 310 or the lateral condyle 320.

[0157] Of course, the first contact surface 1211 may also be a plane, and the first measuring portion 121 only needs to be inserted into the gap between the medial condyle 310 or the lateral condyle 320 and the articular surface 410 to measure the distance between the medial condyle 310 or the lateral condyle 320 and the articular surface 410. For example, the first contact surface 1211 may be a plane, and the first contact surface 1211 is used to contact the plane after the medial condyle 310 or the lateral condyle 320 of the femur 300 is cut.

[0158] In addition, the second contact surface 1212 is an outer convex surface, thereby minimizing the points at which the second contact surface 1212 contacts the articular surface 410, reducing the number of points at which the second contact surface 1212 contacts the articular surface 410, and affecting the accuracy of the first measuring portion 121 in measuring the distance between the articular surface 410 and the medial condyle 310 or the lateral condyle 320. Moreover, by making the first contact surface 1211 an inner concave surface and the second contact surface 1212 an outer convex surface, the thickness of different positions of the first measuring portion 121 can be kept basically consistent, which is conducive to improving the measurement accuracy of the first measuring portion 121. Among them, the second contact surface 1212 can be an arcuate surface or a curved surface.

[0159] Of course, the second contact surface 1212 may also be a plane, and the first measuring portion 121 only needs to be inserted into the gap between the medial condyle 310 or the lateral condyle 320 and the articular surface 410 to measure the distance between the medial condyle 310 or the lateral condyle 320 and the articular surface 410. For example, the second contact surface 1212 may be a plane, and the second contact surface 1212 is used to contact the plane after the tibia 400 is cut.

[0160] The embodiment of the present application also provides a gap measurement assembly. The gap measurement assembly includes a mounting mechanism 110 and at least one measuring member 120, and the mounting mechanism 110 is used to connect with the tibial osteotomy block 12. The at least one measuring member 120 is used to connect with the mounting mechanism 110, and the at least one measuring member 120 includes a first measuring portion 121, and the first measuring portion 121 includes a first contact surface 1211 and a second contact surface 1212 opposite to each other, and the first contact surface 1211 is used to contact with the medial condyle 310 or the lateral condyle 320 of the femur 300, and the second contact surface 1212 is used to contact with the articular surface 410 of the tibia 400, and the first contact surface 1211 is an inner concave surface, and the second contact surface 1212 is an outer convex surface or a plane.

[0161] The mounting mechanism 110 can place at least one measuring piece 120 in a first measuring position and a second measuring position. When the at least one measuring piece 120 is placed in the first measuring position and the second measuring position, it is located at different positions of the mounting mechanism 110; the measuring piece 120 in the first measuring position is used to be inserted between the medial condyle 310 of the femur 300 and the articular surface 410 of the tibia 400 to measure the distance between the medial condyle 310 and the articular surface 410; the measuring piece 120 in the second measuring position is used to be inserted between the lateral condyle 320 of the femur 300 and the articular surface 410 of the tibia 400 to measure the distance between the lateral condyle 320 and the articular surface 410.

[0162] The structures of the installation mechanism 110 and the measuring member 120 may refer to the above-mentioned embodiments and will not be described in detail here.

[0163] An embodiment of the present application also provides a tibial osteotomy device, which includes a tibial osteotomy positioning component or a gap measurement component. The specific structure of the tibial osteotomy positioning component or the gap measurement component refers to the above embodiment. Since the tibial osteotomy device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0164] The tibial osteotomy device 10 may include a tibial osteotomy block 12, and a tibial osteotomy positioning assembly 11 or a gap measurement assembly. The tibial osteotomy block 12 is provided with a tibial osteotomy groove 123. The mounting mechanism 110 of the tibial osteotomy positioning assembly 11 or the gap measurement assembly is connected to the tibial osteotomy block 12. The structure of the tibial osteotomy positioning assembly 11 or the gap measurement assembly can refer to the above-mentioned embodiments, and will not be repeated here.

[0165] An embodiment of the present application also provides an osteotomy system, which includes a tibial osteotomy device. The specific structure of the tibial osteotomy device refers to the above embodiment. Since the osteotomy system adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0166] The osteotomy system 1 may include a tibial osteotomy device 10 and a femoral extramedullary positioning osteotomy device 20. The structure of the tibial osteotomy device 10 may refer to the above embodiments. The femoral extramedullary positioning osteotomy device 20 is used to measure the distance between the tibia 400 and the medial condyle 310 and the lateral condyle 320 of the femur 300, especially to measure the distance between the cut plane of the tibia 400 and the medial condyle 310 and the lateral condyle 320 of the femur 300.

[0167] like Figure 8 and Fig. 9 As shown, the femoral extramedullary positioning osteotomy device 20 may include a femoral osteotomy block 22 and a gap measuring device 21. The femoral osteotomy block 22 is provided with a femoral osteotomy groove 221. The gap measuring device 21 is connected to the femoral osteotomy block 22, and the gap measuring device 21 is used to measure the distance between the tibia 400 and the medial condyle 310 and the lateral condyle 320 of the femur 300, especially to measure the distance between the cut plane of the tibia 400 and the medial condyle 310 and the lateral condyle 320 of the femur 300.

[0168] In some embodiments, the gap measurer 21 may include at least one second measuring portion 211, which is used to be inserted between the tibia 400 and the medial condyle 310 of the femur 300 to measure the distance between the tibia 400 and the medial condyle 310, and the second measuring portion 211 is used to be inserted between the tibia 400 and the lateral condyle 320 of the femur 300 to measure the distance between the tibia 400 and the lateral condyle 320, so as to obtain a suitable flexion-extension gap balance, so as to facilitate positioning of the femoral osteotomy block 22 for femoral osteotomy.

[0169] The second measuring part 211 includes two first measuring surfaces 2111 distributed along the third direction H, and the two first measuring surfaces 2111 are used to contact the medial condyle 310 and the lateral condyle 320 in a one-to-one correspondence, and the first measuring surfaces 2111 are concave surfaces. By making the two first measuring surfaces 2111 of the second measuring part 211 as concave surfaces, the shapes of the two first measuring surfaces 2111 can be adapted to the shapes of the medial condyle 310 and the lateral condyle 320 of the femur 300, which is conducive to improving the measurement accuracy of the second measuring part 211 of the gap measuring device 21. The concave surface of the first measuring surface 2111 can be a concave curved surface, a concave circular surface, or a concave surface formed by multiple surfaces.

[0170] like Fig.10 As shown, the second measuring portion 211 also includes a second measuring surface 2116, which is located on the side of the second measuring portion 211 away from the first measuring surface 2111. In some embodiments, the second measuring surface 2116 can be a plane, which is used to contact the plane of the tibia 400 after cutting. Since the osteotomy surface of the tibia 400 after cutting is a plane, by making the second measuring surface 2116 of the second measuring portion 211 a plane, the second measuring surface 2116 of the second measuring portion 211 can be made to fit the plane of the tibia 400 after cutting more closely, which is conducive to improving the accuracy of measuring the distance between the tibia 400 and the medial condyle 310 and the lateral condyle 320 of the femur 300.

[0171] Of course, the second measuring surface 2116 of the second measuring portion 211 may also be an inner concave surface, and the second measuring surface 2116 is used to contact the tibia 400. Thus, the contact area between the second measuring surface 2116 of the second measuring portion 211 and the tibia 400 can be reduced as much as possible, which is conducive to improving the accuracy of measuring the distance between the tibia 400 and the medial condyle 310 and the lateral condyle 320 of the femur 300.

[0172] like Fig.10As shown, the two first measurement surfaces 2111 of the second measurement part 211 respectively have the closest point P to the plane. In some embodiments, the distance m between the two closest points P in the third direction H can be greater than or equal to 25 mm and less than or equal to 75 mm, so that the lowest point of the two first measurement surfaces 2111 of the second measurement part 211 can be as close as possible to the lowest point of the medial condyle 310 and the lateral condyle 320 of the femur 300 close to the tibia 400, which is conducive to improving the measurement accuracy of the second measurement part 211. Among them, the distance m between the closest points P of the two first measurement surfaces 2111 of the second measurement part 211 in the third direction H can be 30 mm, 35 mm, 40 mm, 50 mm, 60 mm, etc.

[0173] In addition, one of the two closest points P can be made farther from the plane than the other closest point P. Moreover, the first measuring surface 2111 where the closest point P farther from the plane is located is used to contact the medial condyle 310, and the first measuring surface 2111 where the closest point P closer to the plane is located is used to contact the lateral condyle 320. It can be understood that the distances from the medial condyle 310 and the lateral condyle 320 of the femur 300 to the tibia 400 are different, and the distance from the lateral condyle 320 to the tibia 400 is smaller. By making the first measuring surface 2111 where the closest point P farther from the plane is located be used to contact the lateral condyle 320, and the first measuring surface 2111 where the closest point P closer to the plane is located be used to contact the medial condyle 310, the two first measuring surfaces 2111 of the second measuring portion 211 can be more compatible with the corresponding medial condyle 310 and lateral condyle 320, which is conducive to improving the measurement accuracy of the second measuring portion 211.

[0174] In addition, the angle α formed between the line connecting the two closest points P and the plane can be greater than or equal to 1° and less than or equal to 9°, so that the two first measuring surfaces 2111 of the second measuring portion 211 are more compatible with the corresponding medial condyle 310 and lateral condyle 320. The angle α formed between the line connecting the two closest points P and the plane can be 2°, 4°, 6°, 7°, etc.

[0175] Among them, the angle α formed by the line connecting the two nearest points P and the plane can be greater than or equal to 3° and less than or equal to 5°, so that the two first measuring surfaces 2111 of the second measuring part 211 are more compatible with the corresponding medial condyle 310 and lateral condyle 320, and the measurement accuracy of the second measuring part 211 is better.

[0176] Continue to refer to Fig.10The first measuring surface 2111 includes a first edge 2112 and a second edge 2113 opposite to each other, and the first edge 2112 of the first measuring surface 2111 is closer to the other first measuring surface 2111 than the second edge 2113. In some embodiments, the minimum distance n1 from the first edge 2112 to the plane can be made greater than the minimum distance n2 from the second edge 2113 to the plane, so that the two first measuring surfaces 2111 of the second measuring portion 211 are more adapted to the corresponding medial condyle 310 and lateral condyle 320, so as to improve the measurement accuracy of the second measuring portion 211.

[0177] In addition, the inner concave surface of the first measuring surface 2111 can be a concave curved surface, and the first measuring surface 2111 intersects with a plane perpendicular to the fourth direction T to form a first intersection line 2114, the curvature radius R1 of the first intersection line 2114 of at least one first measuring surface 2111 is greater than or equal to 10 mm, and the third direction H, the fourth direction T, and the thickness direction Z of the second measuring portion 211 are substantially perpendicular to each other. Thus, at least one first measuring surface 2111 can be adapted to the shape of the corresponding medial condyle 310 or lateral condyle 320, so that the measurement accuracy of the second measuring portion 211 is higher.

[0178] It should be noted that the curvature radius R1 of the first intersection line 2114 of the two first measuring surfaces 2111 can be greater than or equal to 10 mm, or the curvature radius R1 of the first intersection line 2114 of only one first measuring surface 2111 can be greater than or equal to 10 mm. Of course, the former is conducive to improving the measurement accuracy of the second measuring part 211.

[0179] In addition, if Fig.11 As shown, the inner concave surface can be a concave curved surface, and the first measuring surface 2111 intersects with a plane perpendicular to the third direction H to form a second intersection line 2115, and the curvature radius R2 of the second intersection line 2115 of at least one first measuring surface 2111 is greater than or equal to 10 mm. Thus, at least one first measuring surface 2111 can be adapted to the shape of the corresponding medial condyle 310 or lateral condyle 320, so that the measurement accuracy of the second measuring portion 211 is higher.

[0180] It should be noted that the curvature radius R2 of the second intersection line 2115 of the two first measuring surfaces 2111 can be greater than or equal to 10 mm, or the curvature radius R2 of the second intersection line 2115 of only one first measuring surface 2111 can be greater than or equal to 10 mm. Of course, the former is beneficial to improving the measurement accuracy of the second measuring part 211.

[0181] In some embodiments, the gap measuring device 21 may include a connecting portion 212, which is used to connect to the femoral osteotomy block 22, and the two ends of the connecting portion 212 are provided with a second measuring portion 211. Thus, the sizes or models of the second measuring portions 211 at the two ends of the connecting portion 212 can be different, so that different sizes or models of second measuring portions 211 can be selected for measurement according to patients of different body shapes. Alternatively, the sizes or models of the second measuring portions 211 at the two ends of the connecting portion 212 can be the same, so that the life of the gap measuring device 21 can be extended, and when one of the second measuring portions 211 is damaged or fails, the other second measuring portion 211 can be used for measurement.

[0182] In some embodiments, the connection portion 212 further includes a connection hole 2121, and the connection hole 2121 is used for inserting a force line rod. By inserting the force line rod into the connection hole 2121, the force line rod can be easily connected to the connection portion 212, which is very convenient to operate and is conducive to improving surgical efficiency. Specifically, the connection hole 2121 can penetrate the connection portion 212 along the third direction H. There are multiple connection holes 2121. Multiple connection holes 2121 are distributed in sequence along the fourth direction T.

[0183] In some embodiments, the femoral osteotomy block 22 can be slidably connected to the gap measuring device 21 along the fourth direction T, and the fourth direction T is substantially perpendicular to the third direction H and the thickness direction Z of the measuring portion of the gap measuring device 21. Therefore, after the second measuring portion 211 of the gap measuring device 21 is inserted between the articular surface 410 and the lateral condyle 320 and the medial condyle 310 of the femur 300, the femoral osteotomy block 22 can be moved along the fourth direction T to bring the femoral osteotomy block 22 close to the femur 300, so as to more accurately position the femoral osteotomy block 22.

[0184] In some embodiments, Fig. 9 and Fig.12 As shown, the connection portion 212 of the gap measuring device 21 may be provided with at least one third sliding groove 2122 extending along the fourth direction T. The femoral osteotomy block 22 includes at least one sliding block 222, which is slidably mounted in the at least one third sliding groove 2122 in a one-to-one correspondence, so that the femoral osteotomy block 22 is stably slidably connected to the connection portion 212 of the gap measuring device 21 along the fourth direction T.

[0185] Among them, at least one third sliding groove 2122 includes two opposite side surfaces 2123, and the sliding block 222 includes an outer side surface opposite to the side surface 2123. A limiting groove can be provided in one of the side surface 2123 and the outer side surface, and a limiting portion 2124 is provided in the other of the side surface 2123 and the outer side surface, and the limiting portion 2124 is slidably installed in the limiting groove along the fourth direction T. Therefore, the side wall of the limiting groove can abut against the limiting portion 2124 to limit the moving distance of the femoral osteotomy block 22 relative to the connecting portion 212 in the thickness direction Z, so that the connection between the femoral osteotomy block 22 and the connecting portion 212 of the gap measuring device 21 is more stable.

[0186] Specifically, the connecting portion 212 extends along the fourth direction T. The connecting portion 212 is provided with two third slide grooves 2122. The two third slide grooves 2122 are sequentially distributed along the third direction H. Correspondingly, the femoral osteotomy block 22 includes two sliders 222, and the two sliders 222 are slidably installed in the two third slide grooves 2122 in a one-to-one correspondence. Limiting portions 2124 are respectively convexly provided on the two side surfaces 2123 of the third slide groove 2122. The limiting portion 2124 extends along the fourth direction T. Limiting grooves are respectively provided on the two outer side surfaces of the slider 222, and the two limiting portions 2124 in the third slide groove 2122 are slidably installed in the two limiting grooves of the slider 222 in a one-to-one correspondence, so that the sliding connection between the femoral osteotomy block 22 and the connecting portion 212 is more stable.

[0187] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0188] The above is a detailed introduction to a tibial osteotomy positioning assembly, a gap measurement assembly, an osteotomy device and a system provided in the embodiments of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A tibial osteotomy positioning assembly, characterized in that: include: A mounting mechanism, used for connecting with the tibial osteotomy block; At least one measuring piece is used to be connected to the mounting mechanism, and the mounting mechanism can place the at least one measuring piece in a first measuring position and a second measuring position. The at least one measuring piece is located at different positions of the mounting mechanism when placed in the first measuring position and the second measuring position; the measuring piece in the first measuring position is used to be inserted between the medial condyle of the femur and the articular surface of the tibia to measure the distance between the medial condyle and the articular surface, and to locate the relative position of the tibial osteotomy block and the articular surface; the measuring piece in the second measuring position is used to be inserted between the lateral condyle of the femur and the articular surface of the tibia to measure the distance between the lateral condyle and the articular surface, and to locate the relative position of the tibial osteotomy block and the articular surface.

2. The tibial osteotomy positioning assembly according to claim 1, characterized in that: The mounting mechanism comprises a connecting piece, and the connecting piece is used to be connected with the tibial osteotomy block; Wherein, the mounting mechanism further comprises a first mounting member and a second mounting member, the first mounting member is used to connect with the at least one measuring member and place the at least one measuring member in the first measuring position; the second mounting member is used to connect with the at least one measuring member and place the at least one measuring member in the second measuring position; or, Wherein, the mounting mechanism further includes a third mounting member, and the third mounting member is used to connect with the at least one measuring member, and the third mounting member can move relative to the connecting member to place the at least one measuring member in the first measuring position and the second measuring position.

3. The tibial osteotomy positioning assembly according to claim 2, characterized in that: At least one of the first mounting member and the second mounting member is used to be detachably connected to the at least one measuring member; or, The third mounting member is used for detachably connecting with the at least one measuring member.

4. The tibial osteotomy positioning assembly according to claim 3, characterized in that: The first mounting member is provided with a first mounting hole, the first mounting hole penetrates the first mounting member along a first direction, the at least one measuring member can be inserted into the first mounting hole, so that the at least one measuring member is detachably connected to the first mounting member; the second mounting member is provided with a second mounting hole, the second mounting hole penetrates the second mounting member along the first direction, the at least one measuring member can be inserted into the second mounting hole, so that the at least one measuring member is detachably connected to the second mounting member; or, The third mounting member is provided with a third mounting hole, and the third mounting hole penetrates the third mounting member along the first direction. The at least one measuring member can be inserted into the third mounting hole so that the at least one measuring member is detachably connected to the third mounting member.

5. The tibial osteotomy positioning assembly according to claim 4, characterized in that: The first mounting member and the second mounting member are sequentially distributed along the second direction, and the first mounting member and the second mounting member can rotate together relative to the connecting member around the first rotation axis; the first direction, the second direction and the first rotation axis are substantially perpendicular to each other; or, The third mounting member can be moved along the second direction relative to the connecting member to place the at least one measuring member in the first measuring position and the second measuring position; the third mounting member can be rotated around the second rotation axis relative to the connecting member, and the first direction, the second direction and the second rotation axis are basically perpendicular to each other.

6. The tibial osteotomy positioning assembly according to claim 5, characterized in that: The mounting mechanism further includes a first rotating shaft extending along the first rotation axis, the connecting member is connected to the first mounting member or the second mounting member via the first rotating shaft, the first mounting member and the second mounting member can rotate around the first rotating shaft together, or the connecting member can rotate around the first rotating shaft; or, The mounting mechanism further comprises a second rotating shaft extending along the second rotation axis, the third mounting member is connected to the connecting member via the second rotating shaft, and the third mounting member or the connecting member can rotate around the second rotating shaft.

7. The tibial osteotomy positioning assembly according to claim 4, characterized in that: The mounting mechanism further comprises a first locking member connected to the first mounting member, the first locking member being used to lock the at least one measuring member and the first mounting member; the mounting mechanism further comprises a second locking member connected to the second mounting member, the second locking member being used to lock the at least one measuring member and the second mounting member; or, The mounting mechanism further comprises a third locking member connected to the third mounting member, wherein the third locking member is used to lock the at least one measuring member and the third mounting member.

8. The tibial osteotomy positioning assembly according to claim 7, characterized in that: The first mounting member is provided with a first threaded hole connected with the first mounting hole, the first locking member includes a first knob and a first threaded rod, the first threaded rod is threadedly connected with the first threaded hole, the first knob is provided at an end of the first threaded rod away from the first mounting hole, and the end of the first threaded rod away from the first knob is used to abut against the at least one measuring member to lock the at least one measuring member and the first mounting member; the second mounting member is provided with a second threaded hole connected with the second mounting hole, the second locking member includes a second knob and a second threaded rod, the second threaded rod is threadedly connected with the second threaded hole, the second knob is provided at an end of the second threaded rod away from the second mounting hole, and the end of the second threaded rod away from the second knob is used to abut against the at least one measuring member to lock the at least one measuring member and the second mounting member; or, The third mounting member is provided with a third threaded hole connected to the third mounting hole, and the third locking member includes a third knob and a third threaded rod, the third threaded rod is threadedly connected to the third threaded hole, the third knob is arranged at an end of the third threaded rod away from the third mounting hole, and the end of the third threaded rod away from the third knob is used to abut against the at least one measuring member to lock the at least one measuring member and the third mounting member.

9. The tibial osteotomy positioning assembly according to any one of claims 2 to 8, characterized in that: The first mounting member and the second mounting member are sequentially distributed along a second direction; in the second direction, the first mounting member and the second mounting member can move relative to each other; or, The third mounting member is movably connected to the connecting member to place the measuring member in the first measuring position and the second measuring position.

10. The tibial osteotomy positioning assembly according to claim 9, characterized in that: The mounting mechanism further includes a first slide rail extending along the second direction, the first mounting member is connected to the second mounting member via the first slide rail, and the first mounting member or the second mounting member is slidably mounted on the first slide rail; or, The mounting mechanism further comprises a second slide rail connected to the connecting member, the second slide rail extends along the second direction, and the third mounting member is slidably mounted on the second slide rail.

11. The tibial osteotomy positioning assembly according to claim 10, characterized in that: The mounting mechanism further includes a first driving member connected to the first slide rail, wherein the first driving member is connected to the first mounting member or the second mounting member to drive the first mounting member or the second mounting member to slide along the first slide rail; or, The mounting mechanism further includes a second driving member connected to the second slide rail, and the second driving member is connected to the third mounting member to drive the third mounting member to slide along the second slide rail.

12. The tibial osteotomy positioning assembly according to claim 11, characterized in that: The first driving member includes a first adjusting rod extending along the second direction, the outer periphery of the first adjusting rod is provided with a first spiral slide groove extending spirally along the second direction, the first adjusting rod can rotate around a third rotation axis relative to the first slide rail, and the third rotation axis extends along the second direction; the first mounting member or the second mounting member includes a first sliding portion, the first sliding portion is slidably mounted on the first spiral slide groove, and when the first adjusting rod rotates around the third rotation axis, the inner side surface of the first spiral slide groove pushes the first sliding portion to slide along the second direction; or The second driving member includes a second adjusting rod extending along the second direction, and the outer periphery of the second adjusting rod is provided with a second spiral groove extending along the second direction. The second adjusting rod can rotate around a fourth rotation axis relative to the second slide rail, and the fourth rotation axis extends along the second direction; the third mounting member includes a second sliding portion, and the second sliding portion is slidably mounted on the second spiral groove. When the second adjusting rod rotates around the fourth rotation axis, the inner side surface of the second spiral groove pushes the second sliding portion to slide along the second direction.

13. The tibial osteotomy positioning assembly according to claim 12, characterized in that: The first slide rail includes a fourth mounting hole extending along the second direction, the first adjusting rod is rotatably mounted on the fourth mounting hole, and the inner circumference of the fourth mounting hole is provided with a first avoidance groove for avoiding the first sliding part; or, The second slide rail includes a fifth mounting hole extending along the second direction, the second adjusting rod is rotatably mounted on the fifth mounting hole, and the inner circumference of the fifth mounting hole is provided with a second avoidance groove for avoiding the second sliding part.

14. The tibial osteotomy positioning assembly according to any one of claims 1 to 8, characterized in that: At least one of the measuring pieces comprises a first measuring portion, the first measuring portion being used to be inserted between the articular surface and the medial condyle to measure the distance between the articular surface and the medial condyle and to locate the relative position of the tibial osteotomy block and the medial condyle; or the first measuring portion being used to be inserted between the articular surface and the lateral condyle to measure the distance between the articular surface and the lateral condyle and to locate the relative position of the tibial osteotomy block and the lateral condyle; Wherein, the at least one measuring piece comprises a plurality of the measuring pieces, and the thickness of the first measuring parts of the plurality of the measuring pieces are different; and / or, Wherein, the thickness of the first measuring part is adjustable.

15. The tibial osteotomy positioning assembly according to claim 14, characterized in that: The first measuring portion comprises an adjustment structure, a first contact portion and a second contact portion, the first contact portion is provided with a first contact surface on a side away from the second contact portion, the first contact surface is used to contact the medial condyle or the lateral condyle, the second contact portion is provided with a second contact surface on a side away from the first contact portion, the second contact surface is used to contact the articular surface; The adjustment structure is used to connect with the first contact portion and the second contact portion, and drive the first contact portion and the second contact portion to move closer to or farther from each other, so as to adjust the distance between the first contact surface and the second contact surface.

16. The tibial osteotomy positioning assembly according to claim 14, characterized in that: At least one of the first measuring parts is used to be inserted between the articular surface and the medial condyle, and to adapt the gap between the articular surface and the medial condyle, so as to measure the spacing between the medial condyle and the articular surface, and to locate the relative position of the tibial osteotomy block and the articular surface; or, at least one of the first measuring parts is used to be inserted between the articular surface and the lateral condyle, and to adapt the gap between the articular surface and the lateral condyle, so as to measure the spacing between the lateral condyle and the articular surface, and to locate the relative position of the tibial osteotomy block and the articular surface; and / or, At least one of the first measuring parts is used to be inserted between the articular surface and the medial condyle, and the thickness of the first measuring part is adjusted to fit the gap between the articular surface and the medial condyle, so as to measure the spacing between the medial condyle and the articular surface, and locate the relative position of the tibial osteotomy block and the articular surface; or, at least one of the first measuring parts is used to be inserted between the articular surface and the lateral condyle, and the thickness of the first measuring part is adjusted to fit the gap between the articular surface and the lateral condyle, so as to measure the spacing between the lateral condyle and the articular surface, and locate the relative position of the tibial osteotomy block and the articular surface.

17. The tibial osteotomy positioning assembly according to claim 14, characterized in that: The first measuring portion includes a first contact surface and a second contact surface opposite to each other. The first contact surface is used to contact the medial condyle or the lateral condyle, and the second contact surface is used to contact the articular surface. The first contact surface is an inner concave surface, and the second contact surface is an outer convex surface.

18. A gap measurement assembly, characterized in that: include: A mounting mechanism, used for connecting with the tibial osteotomy block; At least one measuring member, used to connect with the mounting mechanism, the at least one measuring member comprises a first measuring portion, the first measuring portion comprises a first contact surface and a second contact surface opposite to each other, the first contact surface is used to contact with the medial condyle or lateral condyle of the femur, the second contact surface is used to contact with the articular surface of the tibia, the first contact surface is an inner concave surface or a plane, and the second contact surface is an outer convex surface or a plane; Wherein, the mounting mechanism can place the at least one measuring piece in a first measuring position and a second measuring position, and the at least one measuring piece is located at different positions of the mounting mechanism when placed in the first measuring position and the second measuring position; the measuring piece in the first measuring position is used to be inserted between the medial condyle of the femur and the articular surface of the tibia to measure the distance between the medial condyle and the articular surface; The measuring piece in the second measuring position is used to be inserted between the lateral condyle of the femur and the articular surface of the tibia to measure the distance between the lateral condyle and the articular surface.

19. A tibial osteotomy device, characterized in that: include: A tibial osteotomy block, wherein the tibial osteotomy block is provided with a tibial osteotomy groove; as well as, The tibial osteotomy positioning assembly according to any one of claims 1 to 17, or the gap measurement assembly according to claim 18, wherein the mounting mechanism of the tibial osteotomy positioning assembly or the gap measurement assembly is connected to the tibial osteotomy block.

20. The tibial osteotomy device according to claim 19, characterized in that: The tibial osteotomy device also includes a distance adjustment component, which includes a relative fixed end and a connecting end. The fixed end of the distance adjustment component is used to be fixed to the human body, and the connecting end of the distance adjustment component is used to be connected to the tibial osteotomy block. The distance adjustment component is used to adjust the distance between the tibial osteotomy block and the fixed end.

21. An osteotomy system, characterized in that: The osteotomy system comprises a tibial osteotomy device and a femoral extramedullary positioning osteotomy device; the tibial osteotomy device is the tibial osteotomy device according to claim 19 or 20.

22. The osteotomy system according to claim 21, characterized in that The femoral extramedullary positioning osteotomy device comprises: A femoral osteotomy block, wherein the femoral osteotomy block is provided with a femoral osteotomy groove; A gap measuring device connected to the femoral osteotomy block, the gap measuring device comprising at least one second measuring portion, the second measuring portion being used to be inserted between the medial condyle of the tibia and the femur to measure the distance between the tibia and the medial condyle, and the second measuring portion being used to be inserted between the tibia and the lateral condyle of the femur to measure the distance between the tibia and the lateral condyle; The second measuring portion includes two first measuring surfaces distributed along the third direction, the two first measuring surfaces are used to contact the medial condyle and the lateral condyle in a one-to-one correspondence, and the first measuring surfaces are concave surfaces.

23. The osteotomy system according to claim 22, characterized in that The second measuring portion comprises a second measuring surface; the second measuring surface is located on a side of the second measuring portion away from the first measuring surface; Wherein, the second measuring surface is a plane, and the plane is used to contact with the plane after cutting of the tibia; or, The second measuring surface is an inner concave surface, and the second measuring surface is used to contact the tibia.

24. The osteotomy system according to claim 23, characterized in that The two first measuring surfaces respectively have a closest point to the plane; wherein the distance m between the two closest points in the third direction is greater than or equal to 25 mm and less than or equal to 75 mm; and / or, One of the closest points is farther from the plane than the other closest point; the first measuring surface where the closest point farther from the plane is located is used to contact the medial condyle, and the first measuring surface where the closest point closer to the plane is located is used to contact the lateral condyle; and / or, The angle α formed by the line connecting the two nearest points and the plane is greater than or equal to 1° and less than or equal to 9°; preferably, the angle α formed by the line connecting the two nearest points and the plane is greater than or equal to 3° and less than or equal to 5°.

25. The osteotomy system according to claim 23, characterized in that The first measuring surface comprises a first edge and a second edge opposite to each other, the first edge of the first measuring surface is closer to another first measuring surface than the second edge; a minimum distance n1 from the first edge to the plane is greater than a minimum distance n2 from the second edge to the plane; and / or, The inner concave surface is a concave curved surface, the first measuring surface intersects with a plane perpendicular to the fourth direction to form a first intersection line, a radius of curvature R1 of the first intersection line of at least one of the first measuring surfaces is greater than or equal to 10 mm, and the third direction, the fourth direction and the thickness direction of the second measuring portion are substantially perpendicular to each other; and / or, The inner concave surface is a concave curved surface, the first measuring surface intersects with a plane perpendicular to the third direction to form a second intersection line, and a curvature radius R2 of the second intersection line of at least one of the first measuring surfaces is greater than or equal to 10 mm.

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