Tibia osteotomy positioning assembly

Abstract

The tibia osteotomy positioning assembly comprises a base, a mounting seat and a pointer structure, at least one inserting piece is arranged on each of the two sides of the base in the first direction, each inserting piece is used for being inserted into an osteotomy groove of an osteotomy block, and the inserting pieces on the two sides of the base in the first direction have a height difference in the second direction; the mounting seat is arranged on one side of the base in the second direction; the pointer structure comprises a connecting rod and at least one measuring pointer, the measuring pointers are connected with the connecting rod, each measuring pointer comprises an abutting end used for abutting against the articular surface of the tibia, and the connecting rod is rotationally connected with the mounting base; the connecting rod can rotate around a first rotating axis relative to the mounting seat so as to drive the abutting end to rotate, and the connecting rod extends along the first rotating axis; and / or the mounting seat can rotate around a second rotating axis relative to the base, and the second rotating axis is basically parallel to the second direction. According to the tibia osteotomy positioning assembly provided by the embodiment of the invention, the measuring pointer can accurately abut against the lowest point of the tibia articular surface.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a tibial bone osteotomy positioning assembly. BACKGROUND

[0002] In knee replacement surgery, tibial bone osteotomy will be performed first, and the tibial bone osteotomy positioning assembly as a measuring tool for judging the amount of tibial bone osteotomy plays a crucial role in the accuracy of osteotomy. During the operation, the abutting end of the measuring pointer of the tibial bone osteotomy positioning assembly will be abutted with the tibial joint surface, and the abutting end of the measuring pointer will be moved to the lowest point of the tibial joint surface on the tibial joint surface, so as to determine the amount of tibial bone osteotomy.

[0003] However, in the related art, the angle of the abutting end of the measuring pointer is fixed, and for the tibial joint surface with a relatively complex structure, the abutting end of the measuring pointer may not be able to abut with the lowest point of the tibial joint surface, thereby affecting the measurement accuracy of the tibial bone osteotomy positioning assembly. CONTENT OF THE UTILITY MODEL

[0004] The embodiments of the present application provide a tibial bone osteotomy positioning assembly, which aims to solve the problem that the abutting end of the measuring pointer of the tibial bone osteotomy positioning assembly in the related art may not be able to abut with the lowest point of the tibial joint surface, thereby affecting the measurement accuracy of the tibial bone osteotomy positioning assembly.

[0005] The embodiments of the present application provide a tibial bone osteotomy positioning assembly, which comprises:

[0006] A base is provided, and at least one insertion piece is arranged on each side of the base along a first direction, each insertion piece is used for being inserted into a tibial bone osteotomy slot, the insertion pieces on the two sides of the base along the first direction have a height difference in a second direction, and the first direction and the second direction are substantially perpendicular;

[0007] A mounting seat is arranged on one side of the base along the second direction;

[0008] A pointer structure is provided, which comprises a connecting rod and at least one measuring pointer, the measuring pointer is connected with the connecting rod, the measuring pointer comprises an abutting end for abutting with the tibial joint surface, and the connecting rod is rotationally connected with the mounting seat;

[0009] The connecting rod can rotate relative to the mounting seat around a first rotation axis to drive the abutting end to rotate, and the connecting rod extends along the first rotation axis; and / or,

[0010] The mounting seat can rotate relative to the base around a second rotation axis, and the second rotation axis is substantially parallel to the second direction.

[0011] The embodiment of the present application further provides a tibial bone osteotomy positioning assembly, comprising:

[0012] a base, which is provided with an insertion piece on at least one side in the first direction, and the insertion piece is used for being inserted into an osteotomy groove of an osteotomy block;

[0013] a mounting base, which is arranged on one side of the base in a second direction, and the mounting base is rotatable relative to the base around a second rotation axis, the second rotation axis is substantially parallel to the second direction and substantially perpendicular to the first direction;

[0014] a pointer structure, which comprises a connecting rod and at least one measuring pointer, the measuring pointer is connected with the connecting rod, the measuring pointer comprises an abutting end used for abutting with an articular surface of a tibial bone, the connecting rod is rotatably connected with the mounting base, and the connecting rod is rotatable relative to the mounting base around a first rotation axis to drive the abutting end to rotate, and the connecting rod extends along the first rotation axis.

[0015] In some embodiments, the connecting rod is provided with a first positioning structure, the mounting base is provided with a second positioning structure, the first positioning structure is used for cooperating with the second positioning structure to limit the rotation of the connecting rod around the first rotation axis, and the first positioning structure is also used for separating from the second positioning structure to enable the connecting rod to rotate relative to the mounting base around the first rotation axis.

[0016] In some embodiments, the first positioning structure comprises at least one first positioning groove, the second positioning structure is used for being inserted into the first positioning groove to limit the rotation of the connecting rod around the first rotation axis, and the second positioning structure is also used for being withdrawn from the first positioning groove to enable the connecting rod to rotate relative to the mounting base around the first rotation axis; or,

[0017] the second positioning structure comprises at least one second positioning groove, the first positioning structure is used for being inserted into the second positioning groove to limit the rotation of the connecting rod around the first rotation axis, and the first positioning structure is also used for being withdrawn from the second positioning groove to enable the connecting rod to rotate relative to the mounting base around the first rotation axis.

[0018] In some embodiments, the second positioning structure comprises a first positioning member and a first elastic member mounted on the mounting base, the first positioning member is movable relative to the mounting base to be inserted into or withdrawn from the first positioning groove, and the first elastic member is used for driving the first positioning member to be inserted into the first positioning groove; or,

[0019] The first positioning structure comprises a second positioning member and a second elastic member mounted on the connecting rod, the second positioning member is movable relative to the connecting rod to be inserted into or withdrawn from the second positioning slot, and the second elastic member is used to drive the second positioning member to be inserted into the second positioning slot.

[0020] In some embodiments, the first positioning slot is formed on the outer circumferential surface of the connecting rod; the first positioning slot is in plurality, and the plurality of first positioning slots are sequentially distributed along the circumferential direction of the first rotation axis; or,

[0021] The mounting seat comprises a mounting hole extending along the first rotation axis, the connecting rod is rotationally mounted in the mounting hole, and the inner circumferential surface of the mounting hole is provided with the second positioning slot; the second positioning slot is in plurality, and the plurality of second positioning slots are sequentially distributed along the circumferential direction of the mounting hole.

[0022] In some embodiments, the connecting rod is slidable relative to the mounting seat along the first rotation axis; wherein the first positioning slot or the second positioning slot extends along the first rotation axis.

[0023] In some embodiments, the mounting seat is provided with a third positioning structure, the base is provided with a fourth positioning structure, the third positioning structure is used to cooperate with the fourth positioning structure to limit the rotation of the mounting seat around the second rotation axis; the third positioning structure is also used to separate from the fourth positioning structure to enable the rotation of the mounting seat relative to the base around the first rotation axis.

[0024] In some embodiments, the third positioning structure comprises at least one third positioning slot, the fourth positioning structure is used to be inserted into the third positioning slot to limit the rotation of the mounting seat around the second rotation axis; the fourth positioning structure is also used to be withdrawn from the third positioning slot to enable the rotation of the mounting seat relative to the base around the first rotation axis; or,

[0025] The fourth positioning structure comprises at least one fourth positioning slot, the third positioning structure is used to be inserted into the fourth positioning slot to limit the rotation of the mounting seat around the second rotation axis; the third positioning structure is also used to be withdrawn from the fourth positioning slot to enable the rotation of the mounting seat relative to the base around the first rotation axis.

[0026] In some embodiments, the fourth positioning structure comprises a third positioning member and a third elastic member mounted on the mounting seat, the third positioning member is movable relative to the mounting seat to be inserted into or withdrawn from the third positioning slot, and the third elastic member is used to drive the third positioning member to be inserted into the third positioning slot; or,

[0027] The third positioning structure comprises a fourth positioning member and a fourth elastic member mounted on the base, the fourth positioning member is movable relative to the base to be inserted into or withdrawn from the fourth positioning slot, and the fourth elastic member is used to drive the fourth positioning member to be inserted into the fourth positioning slot.

[0028] In some embodiments, both ends of the connecting rod are provided with the measuring pointers;

[0029] Wherein, the abutting ends of the two measuring pointers are located on opposite sides of the connecting rod; or,

[0030] Wherein, the abutting ends of the two measuring pointers are located on the same side of the connecting rod.

[0031] In some embodiments, at least one of the insertion tabs located on one side of the base along the first direction is an in-slot insertion tab; the in-slot insertion tab is used to be inserted into the osteotomy slot to indicate the height difference between the abutting end and the bottom side of the osteotomy slot; and / or,

[0032] At least one of the insertion tabs located on the other side of the base along the first direction is an out-slot insertion tab; the out-slot insertion tab is used to be inserted into the osteotomy slot to indicate the height difference between the abutting end and the top surface of the osteotomy block.

[0033] The tibial osteotomy positioning assembly provided by the embodiments of the present application is provided with at least one insertion tab for being inserted into the osteotomy slot of the osteotomy block on each side of the base along the first direction, and the two insertion tabs on the two sides of the base along the first direction have a height difference in the second direction which is substantially perpendicular to the first direction, so that the doctor can select different insertion tabs to be inserted into the osteotomy slot of the osteotomy block, and measure the osteotomy amount of the tibia by the measuring pointers, to realize the measurement of the osteotomy amount of the tibia in the in-slot or out-slot mode.

[0034] On this basis, the connecting rod is further rotationally connected with the mounting base, so that the connecting rod is rotatable relative to the mounting base about a first rotation axis to drive the abutting end to rotate; and / or the mounting base is rotatable relative to the base about a second rotation axis which is substantially parallel to the second direction. In this way, in the process of positioning the lowest point of the articular surface of the tibia by the abutting end of the measuring pointer, the angle of the connecting rod can be flexibly rotated according to the structure of the articular surface of the tibia, so as to adjust the angle and position of the abutting end of the measuring pointer, and the abutting end of the measuring pointer can abut against the lowest point of the articular surface of the tibia, which is beneficial to improve the measurement accuracy of the tibial osteotomy positioning assembly. BRIEF DESCRIPTION OF DRAWINGS

[0035] The technical solutions and other beneficial effects of the present application will become apparent from the following detailed description of specific embodiments of the present application, combined with the accompanying drawings.

[0036] Figure 1 A structural schematic view of one embodiment of the tibial osteotomy positioning assembly provided by the embodiment of the present application;

[0037] Figure 2 An exploded structural schematic view of one embodiment of the tibial osteotomy positioning assembly provided by the embodiment of the present application;

[0038] Figure 3 A sectional view of one embodiment of the tibial osteotomy positioning assembly provided by the embodiment of the present application, wherein the sectioning plane is perpendicular to the first rotation axis;

[0039] Figure 4 A structural schematic view of the tibial osteotomy positioning assembly cooperating with the osteotomy block provided by the embodiment of the present application, wherein the in-slot insertion piece is inserted into the osteotomy groove of the osteotomy block;

[0040] Figure 5 A structural schematic view of the tibial osteotomy positioning assembly cooperating with the osteotomy block provided by the embodiment of the present application, wherein the out-slot insertion piece is inserted into the osteotomy groove of the osteotomy block;

[0041] Figure 6 A structural schematic view of another embodiment of the tibial osteotomy positioning assembly provided by the embodiment of the present application.

[0042] Marked legend:

[0043] 1-tibial osteotomy positioning assembly; 2-base; 21-insertion piece; 211-in-slot insertion piece; 212-out-slot insertion piece; 22-connection hole; 23-second installation slot; 24-fourth positioning structure; 241-third positioning member; 242-third elastic member; 3-mounting seat; 31-second positioning structure; 311-first positioning member; 312-first elastic member; 32-connection member; 33-mounting member; 331-mounting hole; 332-first installation slot; 333-connection slot; 34-third positioning structure; 341-third positioning slot; 35-pivot; 4-pointer structure; 41-connection rod; 411-first positioning structure; 4111-first positioning slot; 42-measuring pointer; 421-abutment end; 5-osteotomy block; 51-osteotomy groove; 511-bottom side surface; 512-top side surface; 52-top surface; X-first direction; Y-second direction; X1-first rotation axis; X2-second rotation axis. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to 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 the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0045] In the description of the application, it needs to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In addition, the terms "first", "second" are only for the purpose of description, 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", "second" can explicitly or implicitly include one or more of the features. In the description of the application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0046] In the description of the application, it needs to be explained that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0047] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0048] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplifying the present application, the components and arrangements of the specific examples are described in the following. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application can repeatedly refer to reference numerals and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art can realize the application of other processes and / or the use of other materials.

[0049] The embodiments of the present application provide a tibial osteotomy positioning assembly. The following are described in detail respectively.

[0050] Figure 1 The structural schematic diagram of one embodiment of the tibial osteotomy positioning assembly provided by the embodiments of the present application. Figure 2 The structural schematic diagram of one embodiment of the tibial osteotomy positioning assembly provided by the embodiments of the present application. As shown in Figure 1 and Figure 2 The tibial osteotomy positioning assembly 1 includes a base 2, a mounting seat 3 and a pointer structure 4, the base 2 is provided with at least one insertion tab 21 on at least one side in a first direction X, the insertion tab 21 is used to be inserted into the osteotomy groove 51 of the osteotomy block 5, so as to connect the tibial osteotomy positioning assembly 1 with the osteotomy block 5. Wherein, at least one insertion tab 21 can be provided on both sides of the base 2 in the first direction X, each insertion tab 21 is used to be inserted into the osteotomy groove 51 of the osteotomy block 5, the insertion tabs 21 on both sides of the base 2 in the first direction X have a height difference in a second direction Y, the first direction X and the second direction Y are substantially perpendicular.

[0051] The mounting seat 3 is arranged on one side of the base 2 in the second direction Y. The pointer structure 4 includes a connecting rod 41 and at least one measuring pointer 42, the measuring pointer 42 is connected with the connecting rod 41, the measuring pointer 42 includes an abutting end 421 used to abut with the articular surface of the tibia, and the connecting rod 41 is rotationally connected with the mounting seat 3.

[0052] By providing at least one insertion tab 21 on both sides of the base 2 in the first direction X, which is used to be inserted into the osteotomy groove 51 of the osteotomy block 5, and making the two insertion tabs 21 on both sides of the base 2 in the first direction X have a height difference in the second direction Y which is substantially perpendicular to the first direction X, the doctor can select different insertion tabs 21 to be inserted into the osteotomy groove 51 of the osteotomy block 5, and measure the osteotomy amount of the tibia through the measuring pointer 42, so as to realize the measurement mode of the osteotomy amount of the tibia in the groove or outside the groove.

[0053] Wherein, the at least one insertion tab 21 on one side of the base 2 in the first direction X can be an in-groove insertion tab 211. As shown in Figure 4As shown, the in-slot insertion tab 211 is used to be inserted into the osteotomy slot 51 of the osteotomy block, so as to indicate the height difference H1 between the abutting end 421 of the measurement pointer 42 and the bottom side surface 511 of the osteotomy slot 51.

[0054] At this time, the doctor can pass the osteotomy knife through the osteotomy slot 51 of the osteotomy block 5, so that the osteotomy knife is in contact with the bottom side surface 511 of the osteotomy slot 51 and performs osteotomy on the tibia, and the osteotomy amount of the tibia is the height difference H1 between the abutting end 421 of the measurement pointer 42 and the bottom side surface 511 of the osteotomy slot 51. The plane of the tibia after osteotomy is substantially flush with the bottom side surface 511 of the osteotomy slot 51.

[0055] In some embodiments, the inner surface of the osteotomy slot 51 of the osteotomy block 5 includes the bottom side surface 511 and the top side surface 512, and the bottom side surface 511 and the top side surface 512 are sequentially distributed on both sides of the osteotomy slot 51 along the second direction Y, and the bottom side surface 511 is farther away from the measurement pointer 42 than the top side surface 512.

[0056] In addition, as shown in FIG. 2, the at least one insertion tab 21 located on the other side of the base 2 along the first direction X can also be an out-of-slot insertion tab 212. The out-of-slot insertion tab 212 is used to be inserted into the osteotomy slot 51, so as to indicate the height difference H2 between the abutting end 421 and the top surface 52 of the osteotomy block. Figure 5

[0057] At this time, the doctor can pass the osteotomy knife through the osteotomy slot 51 of the osteotomy block 5, so that the osteotomy knife is in contact with the bottom side surface 511 of the osteotomy slot 51 and performs osteotomy on the tibia, and the osteotomy amount of the tibia is the height difference H1 between the abutting end 421 of the measurement pointer 42 and the bottom side surface 511 of the osteotomy slot 51. The plane of the tibia after osteotomy is substantially flush with the bottom side surface 511 of the osteotomy slot 51.

[0058] In some embodiments, the inner surface of the osteotomy slot 51 of the osteotomy block 5 includes the bottom side surface 511 and the top side surface 512, and the bottom side surface 511 and the top side surface 512 are sequentially distributed on both sides of the osteotomy slot 51 along the second direction Y, and the bottom side surface 511 is farther away from the measurement pointer 42 than the top side surface 512.

[0059] In some embodiments, the connecting rod 41 can be rotated relative to the mounting base 3 about the first rotation axis X1 to drive the abutting end 421 to rotate, and the connecting rod 41 extends along the first rotation axis X1.

[0060] ​The connecting rod 41 is rotatably connected with the mounting seat 3, so that the connecting rod 41 can rotate relative to the mounting seat 3 around the first rotation axis X1, and drive the abutting end 421 to rotate. In the process of positioning the lowest point of the articular surface of the tibia by the abutting end 421 of the measuring pointer 42, the angle of the connecting rod 41 around the first rotation axis X1 can be flexibly rotated according to the structure of the articular surface of the tibia, so as to adjust the angle and position of the abutting end 421 of the measuring pointer 42, and enable the abutting end 421 of the measuring pointer 42 to abut against the lowest point of the articular surface of the tibia, thereby improving the measurement accuracy of the tibial osteotomy positioning assembly 1.

[0061] In some embodiments, the mounting seat 3 can rotate relative to the base 2 around the second rotation axis X2 which is substantially parallel to the second direction Y. By enabling the mounting seat 3 to rotate relative to the base 2 around the second rotation axis X2 which is substantially parallel to the second direction Y. In the process of positioning the lowest point of the articular surface of the tibia by the abutting end 421 of the measuring pointer 42, the angle of the connecting rod 41 around the second rotation axis X2 can be flexibly adjusted according to the structure of the articular surface of the tibia, so as to adjust the angle and position of the abutting end 421 of the measuring pointer 42, and enable the abutting end 421 of the measuring pointer 42 to abut against the lowest point of the articular surface of the tibia, thereby improving the measurement accuracy of the tibial osteotomy positioning assembly 1.

[0062] It should be noted that the connecting rod 41 can be rotatable relative to the mounting seat 3 around the first rotation axis X1, and the mounting seat 3 can be rotatable relative to the base 2 around the second rotation axis X2, or only the connecting rod 41 can be rotatable relative to the mounting seat 3 around the first rotation axis X1, or only the mounting seat 3 can be rotatable relative to the base 2 around the second rotation axis X2. Of course, the former can make the adjustment of the angle and position of the abutting end 421 of the measuring pointer 42 more flexible, and enable the abutting end 421 of the measuring pointer 42 to more accurately abut against the lowest point of the articular surface of the tibia.

[0063] In some embodiments, as shown in Figure 2 and Figure 3 The first positioning structure 411 is used for cooperating with the second positioning structure 31 to limit the rotation of the connecting rod 41 around the first rotation axis X1, and is used for separating from the second positioning structure 31 to enable the connecting rod 41 to rotate relative to the mounting seat 3 around the first rotation axis X1.

[0064] Thus, when the connecting rod 41 needs to be rotated to adjust the angle and position of the measuring pointer 42, the first positioning structure 411 can be separated from the second positioning structure 31 to enable the connecting rod 41 to rotate relative to the mounting base 3 about the first rotation axis X1. When the connecting rod 41 is rotated to a preset angle about the first rotation axis X1, the first positioning structure 411 can be cooperated with the second positioning structure 31 to keep the angle of the connecting rod 41 stable, so as to keep the angle and position of the measuring pointer 42 stable.

[0065] In some embodiments, the first positioning structure 411 can include at least one first positioning slot 4111, and the second positioning structure 31 is configured to be inserted into the first positioning slot 4111 to enable the first positioning structure 411 to cooperate with the second positioning structure 31 to limit the rotation of the connecting rod 41 about the first rotation axis X1. The second positioning structure 31 is also configured to exit the first positioning slot 4111 to enable the first positioning structure 411 to separate from the second positioning structure 31 to enable the connecting rod 41 to rotate relative to the mounting base 3 about the first rotation axis X1. Thus, the first positioning structure 411 can be cooperated with or separated from the second positioning structure 31 by inserting or exiting the second positioning structure 31 into or out of the first positioning slot 4111 of the first positioning structure 411, which is simple in structure and convenient to operate.

[0066] In some embodiments, the first positioning slot 4111 can be formed on the outer circumferential surface of the connecting rod 41 to make the first positioning slot 4111 more convenient to process. In some embodiments, the first positioning structure 411 can include a plurality of first positioning slots 4111, and the plurality of first positioning slots 4111 can be sequentially distributed along the circumferential direction of the first rotation axis X1. Thus, when the second positioning structure 31 is inserted into different first positioning slots 4111, the connecting rod 41 can be kept at different angles, and thus the measuring pointer 42 can be kept at different angles and positions.

[0067] In some embodiments, the second positioning structure 31 can include a first positioning member 311 and a first elastic member 312 mounted on the mounting base 3. The first positioning member 311 is movable relative to the mounting base 3 to be inserted into or exited from the first positioning slot 4111, and the first elastic member 312 is configured to drive the first positioning member 311 to be inserted into the first positioning slot 4111. Thus, the first positioning member 311 can be kept at a position of being inserted into the first positioning slot 4111 by the first elastic member 312, and thus the first positioning structure 411 and the second positioning structure 31 can be kept in a cooperating state.

[0068] In some embodiments, the connecting rod 41 can slide relative to the mounting base 3 along the first rotation axis X1. Thus, the position of the measuring pointer 42 in the extension direction of the first rotation axis X1 can be adjusted.

[0069] The first positioning groove 4111 can extend along the first rotation axis X1. Thus, when the second positioning structure 31 is inserted into the first positioning groove 4111 and the connecting rod 41 can move along the first rotation axis X1, the second positioning structure 31 can be stably kept in the position of being inserted into the first positioning groove 4111, so that the angle of the measuring pointer 42 is kept stable.

[0070] Specifically, the mounting seat 3 includes a mounting hole 331 extending along the first rotation axis X1, and the connecting rod 41 is rotationally mounted in the mounting hole 331, so that the connecting rod 41 can rotate relative to the mounting seat 3 about the first rotation axis X1. The connecting rod 41 is slidingly mounted in the mounting hole 331 along the extension direction of the first rotation axis X1.

[0071] The inner periphery of the mounting hole 331 is further provided with a first mounting groove 332. The first positioning member 311 and the first elastic member 312 are mounted in the first mounting groove 332. The first elastic member 312 is located between the first mounting groove 332 and the first positioning member 311, one end of the first elastic member 312 abuts against the bottom of the first mounting groove 332, and the other end of the first elastic member 312 abuts against the first positioning member 311. The first positioning member 311 is a spherical structure.

[0072] The mounting seat 3 includes a connecting member 32 and a mounting member 33, and the connecting member 32 is connected with the base 2. The mounting member 33 is further provided with a connecting groove 333, and one end of the connecting member 32 away from the base 2 is inserted into the connecting groove 333. The pin shaft 35 penetrates through the connecting member 32 and the inner wall of the connecting groove 333 to connect the mounting member 33 and the connecting member 32. The mounting member 33 is provided with the mounting hole 331. Part of the first mounting groove 332 is located in the connecting member 32, and the other part of the first mounting groove 332 penetrates through the bottom surface of the connecting groove 333 and extends to the inner periphery of the mounting hole 331, so that the first mounting groove 332 communicates with the mounting hole 331.

[0073] When the connecting rod 41 rotates about the first rotation axis X1 to the position where the first positioning groove 4111 corresponds to the first positioning member 311, the first positioning member 311 is inserted into the first positioning groove 4111 under the drive of the first elastic member 312 to position the connecting rod 41. When it is needed to rotate the connecting rod 41 about the first rotation axis X1, a larger rotating force can be applied to the connecting rod 41 to rotate the connecting rod 41 about the first rotation axis X1, and the inner surface of the first positioning groove 4111 applies a force to the first positioning member 311 to push the first positioning member 311 out of the first positioning groove 4111.

[0074] In other embodiments, the second positioning structure 31 can also include at least one second positioning slot, and the first positioning structure 411 is configured to be inserted into the second positioning slot to limit the rotation of the connecting rod 41 about the first rotation axis X1. The first positioning structure 411 is also configured to be withdrawn from the second positioning slot to enable the rotation of the connecting rod 41 about the first rotation axis X1 relative to the mounting seat 3. In this way, the first positioning structure 411 can be engaged with or separated from the second positioning structure 31 by inserting or withdrawing the first positioning structure 411 into or from the second positioning slot, which is simple in structure and convenient to operate.

[0075] In some embodiments, a second positioning slot can be formed on the inner circumferential surface of the mounting hole 331 to facilitate the arrangement of the second positioning slot. The second positioning slot can be provided in a plurality of numbers, and the plurality of second positioning slots can be sequentially distributed along the circumference of the mounting hole 331. In this way, when the first positioning structure 411 is inserted into different second positioning slots, the connecting rod 41 can be kept at different angles, so that the measuring pointer 42 can be kept at different angles and positions.

[0076] In some embodiments, the connecting rod 41 can be configured to slide along the first rotation axis X1 relative to the mounting seat 3, and the second positioning slot can extend along the first rotation axis X1. In this way, when the first positioning structure 411 is configured to be inserted into the second positioning slot, and the connecting rod 41 can move along the first rotation axis X1, the first positioning structure 411 can be stably kept at the position of being inserted into the second positioning slot to keep the angle of the measuring pointer 42 stable.

[0077] In some embodiments, the first positioning structure 411 can include a second positioning member mounted on the connecting rod 41 and a second elastic member, the second positioning member is movable relative to the connecting rod 41 to be inserted into or withdrawn from the second positioning slot, and the second elastic member is configured to drive the second positioning member to be inserted into the second positioning slot. In this way, the second elastic member can enable the second positioning member to be stably kept at the position of being inserted into the second positioning slot, so that the first positioning structure 411 and the second positioning structure 31 can be stably kept in the engaged state.

[0078] The structure of the second elastic member and the second positioning member can refer to the structure of the first elastic member 312 and the first positioning member 311 described above, which will not be described herein again.

[0079] In some embodiments, the measuring pointer 42 can be provided on both ends of the connecting rod 41. In this way, the measuring pointers 42 on both ends of the connecting rod 41 can have different sizes, and by selecting the abutting end 421 of the measuring pointer 42 with a different size to abut against the lowest point of the articular surface of the tibia, different amounts of bone resection can be measured.

[0080] The abutting ends 421 of the two measuring pointers 42 can be located on opposite sides of the connecting rod 41, so that the switching of the two measuring pointers 42 is more convenient.

[0081] Alternatively, as shown in Figure 6 , the abutting ends 421 of the two measuring pointers 42 can also be located on the same side of the connecting rod 41. In this way, the risk of the doctor confusing the two measuring pointers 42 is reduced, so that the doctor can accurately determine the amount of bone cutting.

[0082] In some embodiments, as shown in Figure 2 and Figure 3 , the mounting seat 3 can be provided with a third positioning structure 34, and the base 2 can be provided with a fourth positioning structure 24. The third positioning structure 34 is used to cooperate with the fourth positioning structure 24 to limit the rotation of the mounting seat 3 about the second rotation axis X2. The third positioning structure 34 is also used to separate from the fourth positioning structure 24, so that the mounting seat 3 can rotate relative to the base 2 about the first rotation axis X1.

[0083] In this way, when it is necessary to rotate the mounting seat 3 to adjust the angle of the connecting rod 41, the third positioning structure 34 can be separated from the fourth positioning structure 24, so that the mounting seat 3 can rotate relative to the base 2 about the second rotation axis X2. When the mounting seat 3 is rotated to a predetermined angle about the second rotation axis X2, the third positioning structure 34 can cooperate with the fourth positioning structure 24 to keep the angle of the mounting seat 3 stable, so that the angle and position of the measuring pointer 42 are kept stable.

[0084] The third positioning structure 34 can include at least one third positioning slot 341, and the fourth positioning structure 24 is used to insert into the third positioning slot 341 to limit the rotation of the mounting seat 3 about the second rotation axis X2. The fourth positioning structure 24 is also used to exit the third positioning slot 341, so that the mounting seat 3 can rotate relative to the base 2 about the first rotation axis X1. In this way, the third positioning structure 34 can cooperate or separate from the fourth positioning structure 24 by inserting or exiting the fourth positioning structure 24 into or out of the third positioning slot 341 of the third positioning structure 34, which is simple in structure and convenient to operate.

[0085] In some embodiments, the third positioning slot 341 can be formed on the outer circumferential surface of the mounting seat 3, so that the third positioning slot 341 is more convenient to process. The number of the third positioning slots 341 can be multiple, and the multiple third positioning slots 341 are sequentially distributed along the circumference of the second rotation axis X2. In this way, when the fourth positioning member is inserted into different first positioning slots 4111, the mounting seat 3 can be kept at different angles, so that the measuring pointer 42 is kept at different positions.

[0086] Specifically, the base 2 is provided with a connecting hole 22 extending along the second rotation axis X2, and the connecting piece 32 of the mounting seat 3 is rotatably installed in the connecting hole 22, so that the mounting seat 3 can rotate relative to the base 2 about the second rotation axis X2. The outer circumferential surface of the connecting piece 32 is provided with a third positioning groove 341. The third positioning groove 341 is in plurality, and the plurality of third positioning grooves 341 are sequentially distributed along the circumference of the connecting piece 32.

[0087] In some embodiments, the fourth positioning structure 24 can include a third positioning piece 241 installed on the mounting seat 3 and a third elastic piece 242, the third positioning piece 241 being movable relative to the mounting seat 3 to be inserted into or withdrawn from the third positioning groove 341, and the third elastic piece 242 being used to drive the third positioning piece 241 to be inserted into the third positioning groove 341. Thus, the third positioning piece 241 can be stably kept in the position of being inserted into the third positioning groove 341 by the third elastic piece 242, so that the third positioning structure and the fourth positioning structure 24 are stably kept in the matching state.

[0088] Specifically, the inner circumferential surface of the connecting hole 22 of the base 2 is provided with a second installation groove 23, and the third positioning piece 241 and the third elastic piece 242 are installed in the second installation groove 23. The third elastic piece 242 is located between the third positioning piece 241 and the groove bottom of the second installation groove 23, one end of the third elastic piece 242 abuts against the groove bottom of the second installation groove 23, and the other end of the third elastic piece 242 abuts against the third positioning piece 241. The third positioning piece 241 is in a spherical structure. The second installation groove 23 is in plurality. The plurality of second installation grooves 23 are sequentially distributed along the circumference of the second rotation axis X2. Each second installation groove 23 is provided with the third positioning piece 241 and the third elastic piece 242.

[0089] In other embodiments, the fourth positioning structure 24 can also include at least one fourth positioning groove, and the third positioning structure 34 is used to be inserted into the fourth positioning groove to limit the rotation of the mounting seat 3 about the second rotation axis X2. The third positioning structure 34 is also used to be withdrawn from the fourth positioning groove to enable the mounting seat 3 to rotate relative to the base 2 about the second rotation axis X2. Thus, the third positioning structure 34 and the fourth positioning structure 24 can be matched or separated by inserting or withdrawing the third positioning structure 34 into or from the fourth positioning groove of the fourth positioning structure 24, which is simple in structure and convenient to operate.

[0090] Among them, the fourth positioning groove can be provided on the inner circumferential surface of the connecting hole 22, so that the fourth positioning groove is more convenient to provide.

[0091] In some embodiments, the third positioning structure 34 can include a fourth positioning member and a fourth elastic member mounted on the base 2, the fourth positioning member being movable relative to the base 2 to be inserted into or withdrawn from the fourth positioning slot, and the fourth elastic member being configured to drive the fourth positioning member to be inserted into the fourth positioning slot. Thus, the fourth positioning member can be stably kept at the position of being inserted into the fourth positioning slot by the fourth elastic member, so that the third positioning structure and the fourth positioning structure 24 can be stably kept in the matching state.

[0092] The structure of the fourth elastic member and the fourth positioning member can refer to the structure of the third elastic member 242 and the third positioning member 241 described above, and will not be described herein.

[0093] The tibial osteotomy positioning assembly 1 provided by the embodiments of the present application also includes a base 2, a mounting seat 3, and a pointer structure 4. The base 2 is provided with an insertion tab 21 on at least one side in a first direction X, and the insertion tab 21 is configured to be inserted into an osteotomy slot 51 of an osteotomy block 5. The mounting seat 3 is arranged on one side of the base 2 in a second direction Y, and the mounting seat 3 is rotatable relative to the base 2 about a second rotation axis X2, which is substantially parallel to the second direction Y and substantially perpendicular to the first direction X. The pointer structure 4 includes a connecting rod 41 and at least one measuring pointer 42. The measuring pointer 42 is connected to the connecting rod 41, and includes an abutting end 421 configured to abut a joint surface of a tibia. The connecting rod 41 is rotatably connected to the mounting seat 3, and is rotatable relative to the mounting seat 3 about a first rotation axis X1 to drive the abutting end 421 to rotate. The connecting rod 41 extends along the first rotation axis X1.

[0094] The structure of the base 2, the mounting seat 3, and the pointer structure 4 can refer to the structure of the base 2, the mounting seat 3, and the pointer structure 4 described in the above embodiments, and will not be described herein.

[0095] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0096] The tibial osteotomy positioning assembly 1 provided by the embodiments of the present application has been described in detail, and the principle and implementation manner of the present application have been described by applying specific examples. The above description of the embodiments is only used to help understand the technical solutions and the core idea of the present application; those skilled in the art should understand that the technical solutions recorded in the above embodiments can be modified, or some technical features can be replaced by 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 component, characterized in that, include: The base has at least one insertion piece on each side along the first direction, and each insertion piece is used to insert into the osteotomy groove of the osteotomy block. The insertion pieces on both sides of the base along the first direction have a height difference in the second direction, and the first direction and the second direction are basically perpendicular. The mounting base is located on one side of the base along the second direction; The pointer structure includes a connecting rod and at least one measuring pointer, the measuring pointer being connected to the connecting rod, the measuring pointer including an abutting end for abutting against the articular surface of the tibia, and the connecting rod being rotatably connected to the mounting base; Wherein, the connecting rod is rotatable relative to the mounting base about a first rotation axis to drive the abutment end to rotate, and the connecting rod extends along the first rotation axis; and / or, The mounting base is rotatable relative to the base about a second rotation axis, which is substantially parallel to the second direction.

2. A tibial cut positioning assembly, comprising: include: A base, wherein at least one side of the base along a first direction is provided with a plug-in piece, the plug-in piece being used to insert into the osteotomy groove of the osteotomy block; A mounting base is disposed on one side of the base along the second direction. The mounting base can rotate relative to the base about a second rotation axis. The second rotation axis is substantially parallel to the second direction and substantially perpendicular to the first direction. The pointer structure includes a connecting rod and at least one measuring pointer connected to the connecting rod. The measuring pointer includes an abutment end for abutting against the articular surface of the tibia. The connecting rod is rotatably connected to the mounting base and is rotatable relative to the mounting base about a first rotation axis to drive the abutment end to rotate. The connecting rod extends along the first rotation axis.

3. The tibial cut positioning assembly of Claims 1 or 2, wherein, The connecting rod is provided with a first positioning structure, and the mounting base is provided with a second positioning structure. The first positioning structure is used to cooperate with the second positioning structure to restrict the connecting rod from rotating around the first rotation axis. The first positioning structure is also used to separate from the second positioning structure so that the connecting rod can rotate relative to the mounting base around the first rotation axis.

4. The tibial cut positioning assembly of claim 3, wherein, The first positioning structure includes at least one first positioning groove, and the second positioning structure is used to insert into the first positioning groove to restrict the connecting rod from rotating about the first rotation axis; the second positioning structure is also used to withdraw from the first positioning groove so that the connecting rod can rotate relative to the mounting base about the first rotation axis; or... The second positioning structure includes at least one second positioning groove. The first positioning structure is used to insert into the second positioning groove to restrict the connecting rod from rotating about the first rotation axis. The first positioning structure is also used to exit the second positioning groove so that the connecting rod can rotate relative to the mounting base about the first rotation axis.

5. The tibial cut positioning assembly of claim 4, wherein, The second positioning structure includes a first positioning member and a first elastic member mounted on the mounting base. The first positioning member is movable relative to the mounting base to insert into or retract from the first positioning groove. The first elastic member drives the first positioning member to insert into the first positioning groove; or... The first positioning structure includes a second positioning member and a second elastic member installed on the connecting rod. The second positioning member is movable relative to the connecting rod to insert into or retract from the second positioning groove. The second elastic member is used to drive the second positioning member to insert the second positioning member into the second positioning groove.

6. The tibial cut positioning assembly of claim 5, wherein, The first positioning groove is formed on the outer peripheral surface of the connecting rod; there are multiple first positioning grooves, which are sequentially distributed along the circumference of the first rotation axis; or... The mounting base includes a mounting hole extending along the first rotation axis, the connecting rod is rotatably mounted in the mounting hole, and the inner circumferential surface of the mounting hole is provided with a second positioning groove; there are multiple second positioning grooves, and the multiple second positioning grooves are distributed sequentially along the circumference of the mounting hole.

7. The tibial cut positioning assembly of claim 5, wherein, The connecting rod can slide relative to the mounting base along the first rotation axis; wherein the first positioning groove or the second positioning groove extends along the first rotation axis.

8. The tibial osteotomy positioning assembly as described in claim 1 or 2, characterized in that, The mounting base is provided with a third positioning structure, and the base is provided with a fourth positioning structure. The third positioning structure is used to cooperate with the fourth positioning structure to restrict the mounting base from rotating around the second rotation axis. The third positioning structure is also used to separate from the fourth positioning structure so that the mounting base can rotate relative to the base around the first rotation axis.

9. The tibial osteotomy positioning component as described in claim 8, characterized in that, The third positioning structure includes at least one third positioning groove, and the fourth positioning structure is used to insert into the third positioning groove to restrict the mounting base from rotating about the second rotation axis; the fourth positioning structure is also used to withdraw from the third positioning groove so that the mounting base can rotate relative to the base about the first rotation axis; or... The fourth positioning structure includes at least one fourth positioning groove, and the third positioning structure is used to insert into the fourth positioning groove to restrict the mounting base from rotating about the second rotation axis; the third positioning structure is also used to exit the fourth positioning groove so that the mounting base can rotate relative to the second rotation axis of the base.

10. The tibial osteotomy positioning component as described in claim 9, characterized in that, The fourth positioning structure includes a third positioning member and a third elastic member mounted on the mounting base. The third positioning member is movable relative to the mounting base to insert into or retract from the third positioning slot. The third elastic member drives the third positioning member to insert into the third positioning slot; or... The third positioning structure includes a fourth positioning member and a fourth elastic member installed on the base. The fourth positioning member is movable relative to the base to insert into or retract from the fourth positioning slot. The fourth elastic member is used to drive the fourth positioning member to insert the fourth positioning member into the fourth positioning slot.

11. The tibial osteotomy positioning assembly as described in claim 1 or 2, characterized in that, The measuring pointers are provided at both ends of the connecting rod; Wherein, the abutting ends of the two measuring pointers are located on opposite sides of the connecting rod; or, The abutting ends of the two measuring pointers are located on the same side of the connecting rod.

12. The tibial osteotomy positioning assembly as described in claim 1 or 2, characterized in that, At least one of the insert pieces located on one side of the base along the first direction is an in-slot insert piece; the in-slot insert piece is used to insert into the osteotomy groove to indicate the height difference between the abutment end and the bottom side surface of the osteotomy groove; and / or, At least one of the insert pieces located on the other side of the base along the first direction is an external insert piece; the external insert piece is used to insert into the osteotomy groove to indicate the height difference between the abutment end and the top surface of the osteotomy block.

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