Femoral osteotomy positioning tool, adjustor and osteotomy block

Abstract

The embodiment of the invention discloses a femur osteotomy positioning tool, an adjuster and an osteotomy block. The thighbone osteotomy positioning tool comprises an osteotomy angle adjuster and an osteotomy thickness adjuster, the osteotomy angle adjuster comprises a fixing assembly, a first adjusting assembly, an abutting piece and a first locking piece, the abutting piece is connected with the osteotomy thickness adjuster and comprises an abutting face, the fixing assembly extends in the second direction, and the first adjusting assembly is connected with the abutting face. The first adjusting assembly is used for driving the abutting part to rotate around the first rotating axis so as to adjust the femoral osteotomy eversion angle, and the femoral osteotomy eversion angle is the included angle between the abutting face and the plane perpendicular to the second direction; the first locking piece is movably connected with the first adjusting assembly, and the first locking piece can move between a first locking position and a first unlocking position. According to the thighbone osteotomy positioning tool, the first locking piece is arranged, locking and unlocking of the first adjusting assembly are achieved through connection and separation of the first locking piece and the fixing assembly, and therefore the stability of the thighbone osteotomy positioning tool in the using process is ensured.

Description

[0001] This application claims the priority of a Chinese patent application with the application number 202311600860.4 and the invention title "Femoral Osteotomy Positioning Tool, Regulator and Osteotomy Block" filed with the Chinese Patent Office on November 24, 2023, the entire content of which is incorporated herein by reference. Technical Field

[0002] This application relates to the field of medical technology, and particularly to a femoral osteotomy positioning tool, a regulator and an osteotomy block. Background Art

[0003] During knee joint replacement, it is necessary to remove the diseased or worn bone mass by osteotomy to facilitate the installation of artificial joint prostheses. For the diseased conditions of the general population, doctors need to use femoral osteotomy instruments to remove the diseased bone mass at the distal femur according to the situation, and adjust the thickness of the distal femoral osteotomy according to different osteotomy requirements to prepare for the replacement and installation of the artificial femoral joint. Distal femoral osteotomy is one of the crucial steps in knee joint replacement surgery, and the femoral osteotomy positioning tool is a necessary instrument for performing this surgical operation.

[0004] The femoral osteotomy positioning tool generally includes an osteotomy angle regulator, an osteotomy thickness regulator, an osteotomy block and an intramedullary rod. For different populations and different diseased conditions of the knee joint, it is necessary to adjust the appropriate valgus angle through the femoral osteotomy positioning tool for osteotomy angle positioning, and adjust the appropriate osteotomy thickness to achieve an ideal flexion and extension gap, so that the direction and position of the femoral prosthesis of the knee joint meet the mechanical requirements after surgery. However, currently, when adjusting and positioning the osteotomy thickness and angle, the stability of the femoral osteotomy positioning tool is poor, making it easy to deviate in the adjustment of the osteotomy angle and thickness, which affects the surgical effect. Summary of the Invention

[0005] The embodiments of this application provide a femoral osteotomy positioning tool, which can solve the problem that the structural stability of the existing femoral osteotomy positioning tool is poor when adjusting and positioning the osteotomy angle and thickness.

[0006] The embodiments of this application provide a femoral osteotomy positioning tool, including an osteotomy angle regulator and an osteotomy thickness regulator that are movably connected. The osteotomy angle regulator and the osteotomy thickness regulator are distributed along a first direction. The osteotomy thickness regulator is used to connect with the osteotomy block; the osteotomy thickness regulator is used to drive the osteotomy block to reciprocate in a direction close to or away from the osteotomy angle regulator to adjust the femoral osteotomy thickness; the osteotomy angle regulator is used to drive the osteotomy thickness regulator to rotate and drive the osteotomy block to rotate to adjust the femoral osteotomy valgus angle;

[0007] Wherein, the osteotomy angle adjuster includes a first adjustment mechanism, an abutment and a first locking member, the first adjustment mechanism includes a fixing assembly and a first adjustment assembly, the abutment is connected to the osteotomy thickness adjuster, the abutment includes an abutment surface for abutting against the distal end of the femur; the fixing assembly extends along a second direction, the second direction is substantially perpendicular to the first direction, and one end of the fixing assembly is rotatably connected to the abutment; the first adjustment assembly is movably connected to the fixing assembly, and the first adjustment assembly abuts against a side of the abutment facing away from the abutment surface, the first adjustment assembly is used to drive the abutment to rotate around a first rotation axis to adjust the femoral osteotomy valgus angle, the femoral osteotomy valgus angle being the angle between the abutment surface and a plane perpendicular to the second direction, and the extension direction of the first rotation axis is substantially consistent with the first direction;

[0008] The first locking member is movably connected to the first adjusting component, so that the first locking member can move between a first locking position and a first unlocking position; when the first locking member is located at the first locking position, the first locking member is connected to the fixing component to lock the first adjusting component to the fixing component, thereby preventing the first adjusting component from being separated from the abutting member; when the first locking member is located at the first unlocking position, the first locking member is separated from the fixing component to release the lock between the first adjusting component and the fixing component, thereby allowing the first adjusting component to be separated from the abutting member;

[0009] The osteotomy thickness adjuster includes a second adjustment mechanism and a base, the base is connected to the abutment, the second adjustment mechanism is used to connect to the osteotomy block, and the second adjustment mechanism is movably connected to the base to drive the osteotomy block to reciprocate in a direction close to or away from the osteotomy angle adjuster.

[0010] The embodiment of the present application also provides a femoral osteotomy positioning tool, comprising a movably connected osteotomy angle adjuster and an osteotomy thickness adjuster, wherein the osteotomy angle adjuster and the osteotomy thickness adjuster are distributed along a first direction, and the osteotomy thickness adjuster is used to be connected to an osteotomy block; the osteotomy thickness adjuster is used to drive the osteotomy block to reciprocate in a direction close to or away from the osteotomy angle adjuster to adjust the femoral osteotomy thickness; the osteotomy angle adjuster is used to drive the osteotomy thickness adjuster to rotate, and drive the osteotomy block to rotate, so as to adjust the femoral osteotomy valgus angle;

[0011] Wherein, the osteotomy angle adjuster includes a first adjustment mechanism and an abutment member distributed along a second direction, the second direction is substantially perpendicular to the first direction; the abutment member is connected to the osteotomy thickness adjuster, the abutment member includes an abutment surface for abutting against the distal end of the femur, the first adjustment mechanism is rotatably connected to the abutment member, the first adjustment mechanism is used to drive the abutment member to rotate around a first rotation axis to adjust the femoral osteotomy valgus angle, the femoral osteotomy valgus angle is the angle between the abutment surface and a plane perpendicular to the second direction, and the extension direction of the first rotation axis is substantially consistent with the first direction;

[0012] The osteotomy thickness adjuster includes a slider, a second adjusting component and a base, the base is connected to the abutment, the slider is used to be connected to the osteotomy block, the slider is slidably connected to the base, the second adjusting component is movably connected to the slider, and the second adjusting component can rotate around a second rotation axis relative to the slider, and the extension direction of the second rotation axis is roughly consistent with the first direction; a rotation groove is provided on the base, and an eccentric wheel is formed on the second adjusting component at a position corresponding to the rotation groove, the eccentric wheel is eccentrically arranged relative to the second rotation axis, and the eccentric wheel is used to be inserted into the rotation groove, and the second adjusting component is used to drive the eccentric wheel to rotate in the rotation groove, so that the slider slides reciprocatingly in a direction approaching or away from the osteotomy angle adjuster, thereby driving the osteotomy block to reciprocate in a direction approaching or away from the osteotomy angle adjuster.

[0013] The embodiment of the present application also provides an osteotomy angle adjuster, comprising:

[0014] an abutment member, comprising an abutment surface for abutting against the distal end of the femur;

[0015] A fixing assembly extending along the second direction, one end of the fixing assembly being rotatably connected to the abutment member;

[0016] a first adjusting component, movably connected to the fixing component, the first adjusting component abutting against a side of the abutting member away from the abutting surface, the first adjusting component being used to drive the abutting member to rotate around a first rotation axis to adjust a femoral osteotomy valgus angle, the femoral osteotomy valgus angle being an angle between the abutting surface and a plane perpendicular to the second direction; an extension direction of the first rotation axis being substantially perpendicular to the second direction;

[0017] A first locking member is movably connected to the first adjusting assembly so that the first locking member can move between a first locked position and a first unlocked position; when the first locking member is located at the first locked position, the first locking member is connected to the fixed assembly to lock the first adjusting assembly to the fixed assembly, thereby preventing the first adjusting assembly from detaching from the abutting member; when the first locking member is located at the first unlocked position, the first locking member is separated from the fixed assembly to release the locking of the first adjusting assembly to the fixed assembly, thereby enabling the first adjusting assembly to detach from the abutting member.

[0018] An embodiment of the present application further provides an osteotomy thickness adjuster, comprising:

[0019] A base, on which a rotating groove is formed;

[0020] A slider for connecting with an osteotomy block, the slider is slidably connected to the base;

[0021] A second adjusting assembly is connected to the slider, the second adjusting assembly can rotate relative to the slider around a second rotation axis, and the second rotation axis extends along a first direction; an eccentric wheel is formed at a position of the second adjusting assembly corresponding to the rotating groove, the eccentric wheel is eccentrically arranged relative to the second rotation axis, the eccentric wheel is used to be inserted into the rotating groove, and the second adjusting assembly is used to drive the eccentric wheel to rotate in the rotating groove so that the slider reciprocally slides in a direction substantially perpendicular to the first direction, thereby driving the osteotomy block to reciprocally move in a direction substantially perpendicular to the first direction.

[0022] An embodiment of the present application further provides an osteotomy block, the osteotomy block includes an assembly surface for assembling with an osteotomy thickness adjuster, and the osteotomy thickness adjuster includes a second locking member;

[0023] The assembly surface is convexly provided with a mounting portion, the mounting portion includes a side surface extending in a direction away from the assembly surface, one of the side surface of the mounting portion and the second locking member is convexly provided with a second limiting portion, and the other is provided with a second limiting groove at a position corresponding to the second limiting portion; a mounting hole is formed at a position of the osteotomy thickness adjuster corresponding to the mounting portion, the mounting portion is used to be inserted into the mounting hole, and the detachable connection between the osteotomy block and the osteotomy thickness adjuster is realized through the clamping or separation of the second limiting portion and the second limiting groove.

[0024] An embodiment of the present application further provides an osteotomy block, the osteotomy block includes a connecting surface and an osteotomy surface arranged opposite to each other, and an assembly surface connected between the connecting surface and the osteotomy surface, the connecting surface is used to connect with the femur, the assembly surface is used to assemble with an osteotomy thickness adjuster, and the osteotomy thickness adjuster includes a second locking member;

[0025] A second card slot is formed on the assembly surface. The second card slot extends between the connection surface and the osteotomy surface and penetrates through the osteotomy surface. The second card slot is used for clamping or separating from the second locking member to realize the detachable connection between the osteotomy block and the osteotomy thickness adjuster.

[0026] In the embodiment of the present application, the femoral osteotomy positioning tool includes an osteotomy angle adjuster and an osteotomy thickness adjuster distributed along a first direction. The osteotomy angle adjuster includes a fixing component, a first adjusting component, an abutting member and a first locking member. The osteotomy thickness adjuster includes a second adjusting mechanism and a base. The abutting member is connected to the base. The abutting member includes an abutting surface for abutting against the distal end of the femur. The fixing component extends along a second direction. One end of the fixing component is rotatably connected to the abutting member. The first adjusting component is movably connected to the fixing component and is used for driving the abutting member to rotate around a first rotation axis to adjust the valgus angle of the femoral osteotomy. The second adjusting mechanism is used for connecting with the osteotomy block. The second adjusting mechanism is movably connected to the base to drive the osteotomy block to reciprocate along a direction close to or away from the osteotomy angle adjuster. The first locking member is movably connected to the first adjusting component so that the first locking member can move between a first locking position and a first unlocking position. In the present application, the locking and unlocking of the first adjusting component are realized by the connection and separation of the first locking member and the fixing component. When the first locking member is located at the first locking position, the first adjusting component can stably abut against the abutting member to ensure the stability of the abutting member during the use of the femoral osteotomy positioning tool, thereby ensuring the stability and accuracy of the valgus angle of the femoral osteotomy. When the first locking member is located at the first unlocking position, the first locking member is separated from the fixing component, so that the first locking member can move relative to the fixing component together with the first adjusting component, facilitating the accurate adjustment of the valgus angle of the femoral osteotomy. Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0028] Figure 1 is a schematic structural diagram of a femoral osteotomy positioning tool provided by an embodiment of the present application;

[0029] Figure 2 is a schematic assembly structure diagram of an osteotomy angle adjuster and an osteotomy thickness adjuster provided by an embodiment of the present application;

[0030] Figure 3 is a schematic structural diagram of an osteotomy angle adjuster provided by an embodiment of the present application;

[0031] Figure 4 It is a cross-sectional view of an osteotomy angle adjuster provided by an embodiment of the present application;

[0032] Figure 5 It is a cross-sectional view of an osteotomy angle adjuster from another perspective provided by an embodiment of the present application;

[0033] Figure 6 It is a schematic structural diagram of the assembly of a rotating seat and a fixed seat provided by an embodiment of the present application;

[0034] Figure 7 It is a cross-sectional structural diagram of the assembly of a rotating seat and a fixed seat provided by an embodiment of the present application;

[0035] Figure 8 It is another cross-sectional structural diagram of the assembly of a rotating seat and a fixed seat provided by an embodiment of the present application;

[0036] Figure 9 It is a schematic structural diagram of an osteotomy thickness adjuster provided by an embodiment of the present application;

[0037] Figure 10 It is an exploded structural diagram of the assembly of an osteotomy thickness adjuster and an osteotomy block provided by an embodiment of the present application;

[0038] Figure 11 It is a schematic structural diagram of a slider provided by an embodiment of the present application;

[0039] Figure 12 It is a schematic structural diagram of a base provided by an embodiment of the present application;

[0040] Figure 13 It is a schematic structural diagram of a second adjusting component provided by an embodiment of the present application;

[0041] Figure 14 It is a schematic structural diagram of the assembly of a second adjusting component and a base provided by an embodiment of the present application;

[0042] Figure 15 It is a schematic structural diagram of a second locking member provided by an embodiment of the present application;

[0043] Figure 16 It is a schematic structural diagram of an osteotomy block provided by an embodiment of the present application;

[0044] Figure 17 It is a cross-sectional structural diagram of an osteotomy thickness adjuster provided by an embodiment of the present application;

[0045] Figure 18 It is a schematic structural diagram of the assembly of an osteotomy thickness adjuster and an osteotomy block provided by an embodiment of the present application;

[0046] Figure 19 It is a schematic cross-sectional structure diagram of the assembly of an osteotomy thickness regulator and an osteotomy block provided by an embodiment of the present application;

[0047] Figure 20 It is a schematic structural diagram of another slider provided by an embodiment of the present application;

[0048] Figure 21 It is a schematic structural diagram of another osteotomy block provided by an embodiment of the present application.

[0049] Explanation of reference numerals:

[0050] 1, femoral osteotomy positioning tool;

[0051] 10, osteotomy angle regulator; 11, first adjustment mechanism; 111, fixed component; 1111, main shaft; 1111a, first limiting groove; 1112, fixed seat; 1112a, first clamping groove; 112, first adjustment component; 1121, rotating seat; 1121a, first positioning groove; 1122, positioning post; 12, abutting member; 121, abutting surface; 13, first elastic member; 14, first locking member; 141, first limiting portion; 142, first clamping portion; 143, locking portion; 144, pressing portion; 15, second elastic member; 16, first positioning component; 161, first positioning member; 162, third elastic member; 17, locking knob; a, first rotation axis;

[0052] 20, osteotomy thickness regulator; 21, second adjustment mechanism; 211, slider; 2111, first through hole; 2111a, tooth groove; 2112, first locking hole; 2113, mounting surface; 2114, mounting hole; 2115, positioning hole; 212, second adjustment component; 2121, rotating turntable; 2122, eccentric wheel; 2123, drive shaft; 2123a, second positioning groove; 2123b, engaging teeth; 22, base; 221, rotating groove; 23, fourth elastic member; 24, second positioning component; 241, second positioning member; 242, fifth elastic member; 25, second locking member; 251, second locking hole; 252, second limiting portion; 253, second clamping portion; 26, sixth elastic member; b, second rotation axis; Y, first direction; X, second direction;

[0053] 30, osteotomy block; 31, mounting portion; 311, second limiting groove; 32, connecting surface; 33, osteotomy surface; 34, assembly surface; 35, second clamping groove; 36, positioning portion;

[0054] 40, intramedullary rod. Detailed implementation manners

[0055] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative efforts belong to the scope of protection of the present application. In addition, it should be understood that the specific implementation manners described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise stated, the orientation words such as "upper" and "lower" generally refer to the upper and lower in the actual use or working state of the device, specifically the drawing direction in the drawings; while "inner" and "outer" refer to the outline of the device.

[0056] The embodiments of the present application provide a femoral osteotomy positioning tool, an osteotomy angle adjuster, an osteotomy thickness adjuster and an osteotomy block, which will be described in detail below. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments.

[0057] First, the embodiments of the present application provide a femoral osteotomy positioning tool, as Figure 1 shown, the femoral osteotomy positioning tool 1 includes an osteotomy angle adjuster 10 and an osteotomy thickness adjuster 20 that are movably connected. The osteotomy angle adjuster 10 and the osteotomy thickness adjuster 20 are distributed along the first direction Y. The osteotomy thickness adjuster 20 is used to connect with the osteotomy block 30; the osteotomy thickness adjuster 20 is used to drive the osteotomy block 30 to reciprocate in the direction of approaching or departing from the osteotomy angle adjuster 10 to adjust the femoral osteotomy thickness; the osteotomy angle adjuster 10 is used to drive the osteotomy thickness adjuster 20 to rotate and drive the osteotomy block 30 to rotate to adjust the femoral osteotomy valgus angle. That is to say, when adjusting the thickness and valgus angle of the femoral osteotomy, it is achieved by adjusting the relative position of the osteotomy block 30. The osteotomy thickness of the osteotomy block 30 is directly adjusted by the osteotomy thickness adjuster 20, and the osteotomy angle of the osteotomy block 30 is adjusted by adjusting the angle of the osteotomy thickness adjuster 20 by the osteotomy angle adjuster 10. The angle of the osteotomy block 30 is synchronized with the angle of the osteotomy thickness adjuster 20, so as to realize the adjustment of the osteotomy angle.

[0058] It should be noted that the first direction Y in the embodiments of the present application refers to the assembly direction of the osteotomy thickness adjuster 20 and the osteotomy angle adjuster 10, that is, the osteotomy thickness adjuster 20 is assembled to the osteotomy angle adjuster 10 along the first direction Y. When adjusting the osteotomy thickness, the osteotomy block 30 can reciprocate in the direction of approaching or departing from the osteotomy angle adjuster 10 substantially perpendicular to the first direction Y. When adjusting the osteotomy valgus angle, the osteotomy thickness adjuster 20 drives the osteotomy block 30 to rotate together in a plane substantially perpendicular to the first direction Y.

[0059] Among them, Figure 2 and Figure 3 As shown, the osteotomy angle adjuster 10 includes a first adjusting mechanism 11 and an abutment member 12. The first adjusting mechanism 11 includes a fixing assembly 111 and a first adjusting assembly 112. The abutment member 12 is connected to the osteotomy thickness adjuster 20. The abutment member 12 includes an abutment surface 121 for abutting against the distal end of the femur, that is, when the femoral osteotomy is positioned, the abutment surface 121 of the abutment member 12 abuts against the distal end of the femur, and the osteotomy block 30 is located on the osteotomy surface of the femur. The adjustment of the osteotomy thickness and the osteotomy valgus angle refers to the adjustment of the position of the osteotomy block 30 on the osteotomy surface of the femur, thereby determining the size of the osteotomy, so as to facilitate the determination of the size of the femoral prosthesis required in the knee replacement surgery.

[0060] like Figure 3 As shown, the fixing assembly 111 extends along the second direction X, and the second direction X is substantially perpendicular to the first direction Y. One end of the fixing assembly 111 is rotatably connected to the abutment 12. That is, during use, if the first direction Y is regarded as a vertical direction, the second direction X is a horizontal direction, and the second direction X corresponds to the axial direction of the femur. By rotatably connecting one end of the fixing assembly 111 to the abutment 12, the abutment 12 can rotate relative to the fixing assembly 111, thereby driving the femoral osteotomy thickness adjuster 20 and the osteotomy block 30 to rotate.

[0061] The first adjustment component 112 is movably connected to the fixing component 111, and the first adjustment component 112 abuts against the side of the abutting member 12 away from the abutting surface 121. The first adjustment component 112 is used to drive the abutting member 12 to rotate around the first rotation axis a to adjust the femoral osteotomy valgus angle. The femoral osteotomy valgus angle is the angle α between the abutting surface 121 and the plane perpendicular to the second direction X, and the extension direction of the first rotation axis a is roughly consistent with the first direction Y. That is, the fixing component 111 is used to support the first adjustment component 112 to ensure the stability of the first adjustment component 112 during the adjustment process. The first adjustment component 112 pushes the abutting member 12 to rotate around the first rotation axis a by abutting against the abutting member 12, and the extension direction of the first rotation axis a is roughly consistent with the first direction Y, that is, during the rotation of the abutting member 12, the abutting surface 121 is always roughly parallel to the first direction Y, and the angle α between the abutting surface 121 and the plane perpendicular to the second direction X after rotation is the valgus angle of the femoral osteotomy.

[0062] The osteotomy angle adjuster 10 includes a first locking member 14, and the first locking member 14 is movably connected to the first adjustment assembly 112 so that the first locking member 14 can move between a first locked position and a first unlocked position. When the first locking member 14 is in the first locked position, the first locking member 14 is connected to the fixed assembly 111 to lock the first adjustment assembly 112 to the fixed assembly 111, thereby preventing the first adjustment assembly 112 from detaching from the abutting member 12; when the first locking member 14 is in the first unlocked position, the first locking member 14 is separated from the fixed assembly 111 to release the locking of the first adjustment assembly 112 from the fixed assembly 111, so that the first adjustment assembly 112 can be detached from the abutting member 12.

[0063] That is, when the first locking member 14 moves between the first locked position and the first unlocked position, the first locking member 14 realizes the locking and unlocking of the first adjustment assembly 112 by connecting to and separating from the fixed assembly 111. When the first locking member 14 is in the first locked position, the first adjustment assembly 112 can stably abut against the abutting member 12 to ensure the stability of the abutting member 12 during the use of the femoral osteotomy positioning tool 1, thereby ensuring the stability and accuracy of the femoral osteotomy valgus angle. When the first locking member 14 is in the first unlocked position, the first locking member 14 is separated from the fixed assembly 111, so that the first locking member 14 can move relative to the fixed assembly 111 together with the first adjustment assembly 112, facilitating the accurate adjustment of the femoral osteotomy valgus angle.

[0064] Such as Figure 9 and Figure 10 As shown, the osteotomy thickness adjuster 20 includes a second adjustment mechanism 21 and a base 22. The base 22 is connected to the abutting member 12. The second adjustment mechanism 21 is used to connect to the osteotomy block 30. The second adjustment mechanism 21 is movably connected to the base 22 to drive the osteotomy block 30 to reciprocate in a direction approaching or away from the osteotomy angle adjuster 10. That is, the base 22 and the abutting member 12 are connected to each other and their positions remain relatively stable. When the abutting member 12 rotates around the first rotation axis a, the abutting member 12 will drive the base 22 to rotate synchronously, thereby driving the second adjustment mechanism 21 and the osteotomy block 30 to rotate synchronously. When the femoral osteotomy valgus angle is 0°, the moving direction of the osteotomy block 30 is consistent with the second direction X and is substantially perpendicular to the first direction Y; when the femoral osteotomy valgus angle is α, the moving direction of the osteotomy block 30 is also at an angle α with the second direction X, but still substantially perpendicular to the first direction Y, and reciprocates in a direction approaching or away from the osteotomy angle adjuster 10.

[0065] Wherein, when the abutting surface 121 of the abutting member 12 is a plane and the abutting surface 121 of the abutting member 12 is substantially parallel to the first direction Y, if the femoral osteotomy valgus angle is 0°, the moving direction of the osteotomy block 30 is substantially perpendicular to the first direction Y, that is, the moving direction of the osteotomy block 30 is substantially perpendicular to the abutting surface 121; if the femoral osteotomy valgus angle is α, although the moving direction of the osteotomy block 30 is also at an angle α with the second direction X, it is still substantially perpendicular to the first direction Y, that is, the moving direction of the osteotomy block 30 is still substantially perpendicular to the abutting surface 121. Therefore, when the second adjusting mechanism 21 adjusts the osteotomy thickness of the osteotomy block 30, it drives the osteotomy block 30 to reciprocate along a direction substantially perpendicular to the abutting surface 121.

[0066] It should be noted that in the embodiments of the present application, "substantially perpendicular" means that the angle between the two can be between 85° and 95°, and "substantially consistent" means substantially parallel, that is, the angle between the two can be between 0° and 5°. There is no strict limitation in the present application.

[0067] In the embodiments of the present application, the femoral osteotomy positioning tool 1 includes an osteotomy angle adjuster 10 and an osteotomy thickness adjuster 20 distributed along the first direction Y. The osteotomy angle adjuster 10 includes a fixing component 111, a first adjusting component 112, an abutting member 12 and a first locking member 14. The osteotomy thickness adjuster 20 includes a second adjusting mechanism 21 and a base 22. The abutting member 12 is connected to the base 22. The abutting member 12 includes an abutting surface 121 for abutting against the distal femur. The fixing component 111 extends along the second direction X. One end of the fixing component 111 is rotatably connected to the abutting member 12. The first adjusting component 112 is movably connected to the fixing component 111 and is used to drive the abutting member 12 to rotate around the first rotation axis a to adjust the femoral osteotomy valgus angle; the second adjusting mechanism 21 is used to connect to the osteotomy block 30. The second adjusting mechanism 21 is movably connected to the base 22 to drive the osteotomy block 30 to reciprocate along a direction close to or away from the osteotomy angle adjuster 10; the first locking member 14 is movably connected to the first adjusting component 112 so that the first locking member 14 can move between a first locked position and a first unlocked position. In the present application, the locking and unlocking of the first adjusting component 112 are achieved by the connection and separation of the first locking member 14 and the fixing component 111. When the first locking member 14 is located at the first locked position, the first adjusting component 112 can stably abut against the abutting member 12 to ensure the stability of the abutting member 12 during the use of the femoral osteotomy positioning tool 1, thereby ensuring the stability and accuracy of the femoral osteotomy valgus angle; when the first locking member 14 is located at the first unlocked position, the first locking member 14 is separated from the fixing component 111, so that the first locking member 14 can move relative to the fixing component 111 together with the first adjusting component 112, facilitating the accurate adjustment of the femoral osteotomy valgus angle.

[0068] The embodiments of the present application also provide a femoral osteotomy positioning tool, such asFigure 1 As shown, the femoral osteotomy positioning tool 1 includes an osteotomy angle adjuster 10 and an osteotomy thickness adjuster 20 that are movably connected. The osteotomy angle adjuster 10 and the osteotomy thickness adjuster 20 are distributed along the first direction Y. The osteotomy thickness adjuster 20 is used to connect with the osteotomy block 30. The osteotomy thickness adjuster 20 is used to drive the osteotomy block 30 to reciprocate in a direction close to or away from the osteotomy angle adjuster 10 to adjust the femoral osteotomy thickness. The osteotomy angle adjuster 10 is used to drive the osteotomy thickness adjuster 20 to rotate and drive the osteotomy block 30 to rotate to adjust the femoral osteotomy valgus angle. That is to say, when adjusting the thickness and valgus angle of the femoral osteotomy, it is achieved by adjusting the relative position of the osteotomy block 30. The osteotomy thickness of the osteotomy block 30 is directly adjusted by the osteotomy thickness adjuster 20, and the osteotomy angle of the osteotomy block 30 is adjusted by adjusting the angle of the osteotomy thickness adjuster 20 by the osteotomy angle adjuster 10. The angle of the osteotomy block 30 is synchronized with the angle of the osteotomy thickness adjuster 20, so as to achieve the adjustment of the osteotomy angle.

[0069] It should be noted that the first direction Y in the embodiment of the present application refers to the assembly direction of the osteotomy thickness adjuster 20 and the osteotomy angle adjuster 10, that is, the osteotomy thickness adjuster 20 is assembled to the osteotomy angle adjuster 10 along the first direction Y. When adjusting the osteotomy thickness, the osteotomy block 30 can reciprocate in a direction close to or away from the osteotomy angle adjuster 10 substantially perpendicular to the first direction Y. When adjusting the osteotomy valgus angle, the osteotomy thickness adjuster 20 drives the osteotomy block 30 to rotate together on a plane substantially perpendicular to the first direction Y.

[0070] Among them, as Figure 3 shown, the osteotomy angle adjuster 10 includes a first adjustment mechanism 11 and an abutting member 12 distributed along the second direction X. The second direction X is substantially perpendicular to the first direction Y. The abutting member 12 is connected to the osteotomy thickness adjuster 20. The abutting member 12 includes an abutting surface 121 for abutting against the distal femur. That is, when positioning the femoral osteotomy, the abutting surface 121 of the abutting member 12 abuts against the distal femur, and the osteotomy block 30 is located on the osteotomy surface of the femur. The adjustment of the osteotomy thickness and the osteotomy valgus angle refers to the adjustment of the position of the osteotomy block 30 on the osteotomy surface of the femur, so as to determine the size of the osteotomy, so as to facilitate the determination of the size of the femoral prosthesis required in the knee replacement surgery.

[0071] The first adjustment mechanism 11 is rotatably connected to the abutting member 12. The first adjustment mechanism 11 is used to drive the abutting member 12 to rotate about the first rotation axis a to adjust the valgus angle of femoral osteotomy. The valgus angle of femoral osteotomy is the angle α between the abutting surface 121 and the plane perpendicular to the second direction X. The extending direction of the first rotation axis a is substantially consistent with the first direction Y. That is, during use, if the first direction Y is regarded as the vertical direction, the second direction X is the horizontal direction, and the second direction X corresponds to the axial direction of the femur. That is, during the rotation of the abutting member 12, the abutting surface 121 is always substantially parallel to the first direction Y, and the angle α between the abutting surface 121 and the plane perpendicular to the second direction X after rotation is the valgus angle of femoral osteotomy.

[0072] As Figure 9 and Figure 10 shown, the osteotomy thickness adjuster 20 includes a slider 211, a second adjustment component 212 and a base 22. The base 22 is connected to the abutting member 12. The slider 211 is used to connect to the osteotomy block 30. The slider 211 is slidably connected to the base 22. The second adjustment component 212 is movably connected to the slider 211, and the second adjustment component 212 can rotate relative to the slider 211 about the second rotation axis b. The extending direction of the second rotation axis b is substantially consistent with the first direction Y. As Figure 12 and Figure 13 shown, a rotation groove 221 is formed on the base 22. An eccentric wheel 2122 is formed at a position corresponding to the rotation groove 221 on the second adjustment component 212. The eccentric wheel 2122 is eccentrically arranged relative to the second rotation axis b. The eccentric wheel 2122 is used to be inserted into the rotation groove 221. The second adjustment component 212 is used to drive the eccentric wheel 2122 to rotate in the rotation groove 221, so that the slider 211 reciprocally slides in a direction close to or away from the osteotomy angle adjuster 10, thereby driving the osteotomy block 30 to reciprocally move in a direction close to or away from the osteotomy angle adjuster 10.

[0073] That is to say, the second adjustment component 212 drives the slider 211 to slide through the mutual cooperation of the eccentric wheel 2122 and the rotation groove 221, thereby driving the osteotomy block 30 to move to realize the adjustment of the osteotomy thickness. The eccentric distance of the eccentric wheel 2122 relative to the second rotation axis b is the adjustment range of the osteotomy thickness. If the eccentric distance of the eccentric wheel is set as c, the adjustment range of the osteotomy thickness can be set as 9mm ± c. The eccentric distance c of the eccentric wheel can be selected and adjusted according to the actual design situation. For example, the range of c can be set as 1mm to 7mm.

[0074] Among them, the rotation groove 221 has an approximately elliptical structure with a long side and a short side. The distance between the two long sides is small, and the distance between the two short sides is large. When the second adjustment component 212 drives the eccentric wheel 2122 to rotate in the rotation groove 221, if the eccentric wheel 2122 rotates to contact one of the long sides, since the distance between the two long sides is small and cannot meet the rotation range of the eccentric wheel 2122, the eccentric wheel 2122 will apply a force to the side wall of the rotation groove 221 on the base 22. The base 22 is fixed relative to the abutting member 12, and the reaction force applied by the base 22 will act on the entire second adjustment component 212 through the eccentric wheel 2122, and then act on the slider 211, so that the slider 211 reciprocally slides relative to the base 22 along the direction close to or away from the osteotomy angle adjuster 10, thereby driving the osteotomy block 30 to move and realizing the adjustment of the femoral osteotomy thickness.

[0075] In the embodiment of the present application, the femoral osteotomy positioning tool 1 includes an osteotomy angle adjuster 10 and an osteotomy thickness adjuster 20 distributed along the first direction Y. The osteotomy angle adjuster 10 includes a first adjustment mechanism 11 and an abutting member 12 distributed along the second direction X. The first adjustment mechanism 11 is rotatably connected to the abutting member 12 and is used to drive the abutting member 12 to rotate around the first rotation axis a to adjust the femoral osteotomy valgus angle. The osteotomy thickness adjuster 20 includes a slider 211, a second adjustment component 212, and a base 22. The base 22 is connected to the abutting member 12. The slider 211 is used to connect to the osteotomy block 30. The slider 211 is slidably connected to the base 22. The second adjustment component 212 is connected to the slider 211 and can rotate relative to the slider 211 around the second rotation axis b. A rotation groove 221 is formed on the base 22. An eccentric wheel 2122 is formed at a position corresponding to the rotation groove 221 of the second adjustment component 212. The eccentric wheel 2122 is eccentrically arranged relative to the second rotation axis b. In the present application, the second adjustment component 212 is used to drive the eccentric wheel 2122 to rotate in the rotation groove 221. Through the mutual cooperation of the eccentric wheel 2122 and the rotation groove 221, the slider 211 reciprocally slides relative to the slider 211 along the direction close to or away from the osteotomy angle adjuster 10 under the action of the mutual acting force between the eccentric wheel 2122 and the eccentric groove, thereby directly driving the osteotomy block 30 to reciprocally move along the direction close to or away from the osteotomy angle adjuster 10, and further realizing the adjustment of the femoral osteotomy thickness, and the adjustment process is simple and convenient.

[0076] Optionally, as Figure 3 and Figure 4As shown, the fixing assembly 111 in the osteotomy angle adjuster 10 includes a main shaft 1111 and a fixing seat 1112 that are connected to each other. The main shaft 1111 extends along the second direction X, and the fixing seat 1112 is sleeved on the main shaft 1111, that is, the main shaft 1111 serves as the supporting shaft of the osteotomy angle adjuster 10, which is used to ensure the overall structural stability of the osteotomy angle adjuster 10, and when in use, the axial direction of the main shaft 1111 is consistent with the axial direction of the femur, and the fixing seat 1112 is directly sleeved on the main shaft 1111 and fixedly connected to the main shaft 1111.

[0077] The first adjustment component 112 includes a rotating seat 1121 and a plurality of positioning posts 1122. The rotating seat 1121 is sleeved on the main shaft 1111. The rotating seat 1121 is movably connected to the fixed seat 1112. The rotating seat 1121 and the fixed seat 1112 are respectively provided with engraved lines and scales for indicating the valgus angle of the femoral osteotomy. The positioning posts 1122 extend along the second direction X. The plurality of positioning posts 1122 are distributed along the circumference of the main shaft 1111. The positioning posts 1122 are slidably connected to the fixed seat 1112, that is, the extension direction of the positioning posts 1122 is consistent with the extension direction of the main shaft 1111, and the positioning posts 1122 can slide back and forth in the second direction X relative to the fixed seat 1112.

[0078] Among them, one end of the positioning column 1122 is used to abut against the side of the abutment 12 away from the abutment surface 121, and the other end of the positioning column 1122 is used to abut against the rotating seat 1121. The rotating seat 1121 is used to rotate around the main axis 1111 to drive at least one of the positioning columns 1122 to slide along the second direction X and push the abutment 12 to rotate around the first rotation axis a, so that the abutment 12 pushes at least another positioning column 1122 to slide in a direction opposite to the sliding direction of at least one of the positioning columns 1122.

[0079] That is, the positioning column 1122 abuts between the abutting member 12 and the rotating seat 1121, and the surface where the rotating seat 1121 abuts against the positioning column 1122 is an inclined surface. When the rotating seat 1121 rotates around the main axis 1111, the part of the positioning column 1122 abutting on the inclined surface closer to the fixed seat 1112 will push the abutting surface 121 to rotate around the first rotation axis a, and when the abutting member 12 rotates, it will push the remaining positioning columns 1122 to slide in the direction opposite to the sliding direction of the above-mentioned part of the positioning columns 1122. The change of the abutment position of the plurality of positioning posts 1122 on the inclined surface can be converted into the rotation angle of the abutment member 12, and corresponds to the scale on the fixed seat 1112, thereby realizing the regulation of the valgus angle of the femoral osteotomy. The adjustment range of the valgus angle of the femoral osteotomy can be regulated according to the design of the inclination angle of the inclined surface on the rotating seat 1121, and the specific adjustment range of the valgus angle can be set to ±3°~±13°.

[0080] It should be noted that the positive and negative values of the valgus angle indicate that, relative to a valgus angle of 0°, the abutting member 12 has two rotational directions. If the valgus angle after rotation in one direction is defined as positive, then the valgus angle after rotation in the other direction is defined as negative.

[0081] In some embodiments, as Figures 3 to 5 shown, the first locking member 14 is movably connected to the rotating seat 1121. That is, when adjusting the femoral osteotomy valgus angle, the first locking member 14 and the rotating seat 1121 move synchronously. When the first locking member 14 is in the first locking position, the first locking member 14 is engaged with the main shaft 1111 to lock the rotating seat 1121 to the main shaft 1111, preventing the rotating seat 1121 from sliding relative to the main shaft 1111, thereby preventing the positioning post 1122 from disengaging from the abutting member 12. When the first locking member 14 is in the first unlocking position, the first locking member 14 is separated from the main shaft 1111 to release the locking of the rotating seat 1121 and the main shaft 1111, enabling the rotating seat 1121 to slide relative to the main shaft 1111 and causing the positioning post 1122 to disengage from the abutting member 12. That is, the first locking member 14 realizes its movement between the first locking position and the first unlocking position through engagement with and separation from the main shaft 1111.

[0082] Among them, as Figure 5 shown, a first limiting groove 1111a is provided on the outer surface of the main shaft 1111 or in the first locking member 14, and a first limiting portion 141 is formed at a position corresponding to the first limiting groove 1111a. When the first locking member 14 is in the first locking position, the first limiting portion 141 is engaged with the first limiting groove 1111a to make the first locking member 14 engaged with the main shaft 1111. When the first locking member 14 is in the first unlocking position, the first limiting portion 141 is separated from the first limiting groove 1111a to make the first locking member 14 separated from the main shaft 1111. That is, the first locking member 14 and the main shaft 1111 realize engagement and separation through the mutual cooperation of the first limiting portion 141 and the first limiting groove 1111a, thereby realizing the movement of the first locking member 14 between the first locking position and the first unlocking position.

[0083] As Figure 3As shown, the first locking member 14 includes a locking portion 143 and a pressing portion 144 that are connected to each other. The locking portion 143 is movably connected to the rotating base 1121. The locking portion 143 is annular and is sleeved on the main shaft 1111. A part of the pressing portion 144 is exposed on the outer surface of the rotating base 1121. The pressing portion 144 is used to drive the locking portion 143 to move between a first locked position and a first unlocked position. That is, the annular locking portion 143 is directly sleeved on the main shaft 1111. The locking portion 143 is used to engage with or disengage from the main shaft 1111. The pressing portion 144 is used to receive a driving force to drive the locking portion 143 to move between the first locked position and the first unlocked position. When the locking portion 143 is located at the first locked position, the locking portion 143 engages with the main shaft 1111. When the locking portion 143 is located at the first unlocked position, the locking portion 143 disengages from the main shaft 1111.

[0084] Among them, an opening can be formed on the outer surface of the rotating base 1121. The locking portion 143 is directly inserted into the rotating base 1121, and the pressing portion 144 is exposed on the outer surface of the rotating base 1121 to facilitate receiving the driving force. By directly inserting the first locking member 14 into the rotating base 1121, the structure of the osteotomy angle adjuster 10 can be made more compact. At the same time, since the first locking member 14 and the rotating base 1121 move synchronously, this structural design also facilitates the operation of the operator and helps to quickly adjust the valgus angle of femoral osteotomy.

[0085] When the locking portion 143 and the main shaft 1111 are engaged and disengaged through the mutual cooperation of the first limiting portion 141 and the first limiting groove 1111a, the first limiting portion 141 and the first limiting groove 1111a can be respectively arranged on the inner surface of the annular locking portion 143 and the outer surface of the main shaft 1111, and the first limiting portion 141 and the first limiting groove 1111a can be respectively arranged annularly along the circumferential direction of the main shaft 1111. Thus, when adjusting the valgus angle of femoral osteotomy, after the first locking member 14 and the rotating base 1121 rotate a certain angle relative to the main shaft 1111 together, the first limiting portion 141 can always engage with the first limiting groove 1111a to lock the rotating base 1121 and prevent the rotating base 1121 from sliding in the direction opposite to the second direction X.

[0086] Specifically, a first limiting portion 141 protrudes from the inner surface of the locking portion 143, and a first limiting groove 1111a is formed on the outer surface of the main shaft 1111. Both the first limiting portion 141 and the first limiting groove 1111a are annular, and the inner diameter of the annular first limiting portion 141 is greater than or equal to the outer diameter of the main shaft 1111, so that the first limiting portion 141 can be completely separated from the first limiting groove 1111a, and thus the first locking member 14 can slide synchronously with the rotating base 1121 relative to the main shaft 1111.

[0087] When the locking part 143 is located at the first locking position, the part of the first limiting part 141 away from the pressing part 144 is engaged with the first limiting groove 1111a, and the part of the first limiting part 141 close to the pressing part 144 is separated from the first limiting groove 1111a; when the locking part 143 needs to move from the first locking position to the first unlocking position, a force is applied to the pressing part 144 to separate the part of the first limiting part 141 away from the pressing part 144 from the first limiting groove 1111a. Although the part of the first limiting part 141 close to the pressing part 144 moves closer to the first limiting groove 1111a, it still remains in a separated state from the first limiting groove 1111a, thereby realizing the separation of the first limiting part 141 from the first limiting groove 1111a.

[0088] In some other embodiments, such as Figure 6 and Figure 7 shown, the first locking member 14 is movably connected to the rotating seat 1121, that is, when adjusting the valgus angle of femoral osteotomy, the first locking member 14 and the rotating seat 1121 move synchronously. When the first locking member 14 is located at the first locking position, the first locking member 14 is engaged with the fixed seat 1112 to lock the rotating seat 1121 to the fixed seat 1112, preventing the rotating seat 1121 from sliding relative to the main shaft 1111, thereby preventing the positioning post 1122 from disengaging from the abutting member 12; when the first locking member 14 is located at the first unlocking position, the first locking member 14 is separated from the fixed seat 1112 to release the locking between the rotating seat 1121 and the fixed seat 1112, enabling the rotating seat 1121 to slide relative to the main shaft 1111 and the positioning post 1122 to disengage from the abutting member 12. That is, the first locking member 14 realizes the movement between the first locking position and the first unlocking position through the engagement and separation with the fixed seat 1112.

[0089] Such as Figure 7 shown, the first locking member 14 is rotatably connected to the rotating seat 1121, so that the first locking member 14 rotates between the first locking position and the first unlocking position, and a first card slot 1112a is formed on the outer surface of the fixed seat 1112. When the first locking member 14 is located at the first locking position, the first locking member 14 is engaged with the first card slot 1112a to lock the rotating seat 1121 to the fixed seat 1112; when the first locking member 14 is located at the first unlocking position, the first locking member 14 is separated from the first card slot 1112a to release the locking between the rotating seat 1121 and the fixed seat 1112.

[0090] Among them, the first locking member 14 is formed with a first engaging portion 142 at a position corresponding to the first card slot 1112a, so that the first locking member 14 forms a hook-like structure at the engaging position. The first locking member 14 is used to receive a driving force to rotate between a first locked position and a first unlocked position. When the first locking member 14 is located at the first locked position, the first engaging portion 142 is hooked into the first card slot 1112a, so that the first locking member 14 is engaged with the first card slot 1112a, so that the rotating seat 1121 is fixed relative to the fixed seat 1112, avoiding the sliding of the rotating seat 1121 relative to the main shaft 1111, thereby preventing the positioning post 1122 from disengaging from the abutting member 12, and further ensuring the stability of the abutting member 12 during use; when the first locking member 14 is located at the first unlocked position, the first engaging portion 142 disengages from the first card slot 1112a, so that the first locking member 14 is separated from the first card slot 1112a, so that the first locking member 14 and the rotating seat 1121 can slide relative to the main shaft 1111 synchronously to disengage the positioning post 1122 from the abutting member 12, thus facilitating the adjustment of the femoral osteotomy valgus angle.

[0091] Optionally, as Figure 5 and Figure 7 shown, the osteotomy angle adjuster 10 further includes a first elastic member 13. The first elastic member 13 is connected between the first locking member 14 and the rotating seat 1121. The first elastic member 13 is used to drive the first locking member 14 to move from the first unlocked position to the first locked position. That is, the first locking member 14 is elastically connected to the rotating seat 1121 through the first elastic member 13. When the first locking member 14 is moved from the first locked position to the first unlocked position, the operator only needs to overcome the acting force of the first elastic member 13 to press or stretch the first locking member 14 to separate the first locking member 14 from the main shaft 1111 and / or the fixed seat 1112, and then the first locking member 14 and the rotating seat 1121 can be moved synchronously to adjust the femoral osteotomy valgus angle; after the adjustment is completed, the operator only needs to release the first locking member 14, and the first locking member 14 can automatically move from the first unlocked position to the first locked position under the action of the first elastic member 13, which helps to simplify the adjustment method of the femoral osteotomy valgus angle.

[0092] Among them, the first elastic member 13 is used to provide a first acting force along the radial direction of the main shaft 1111 to the first locking member 14, so that the first locking member 14 moves from the first unlocked position to the first locked position. That is, when the operator operates, the first acting force to be overcome also acts along the radial direction of the main shaft 1111, so that the operation process is more in line with the human operation habit.

[0093] In some embodiments, as Figure 4 and Figure 5As shown, the osteotomy angle adjuster 10 further includes a second elastic member 15. The second elastic member 15 is connected between the main shaft 1111 and the rotating seat 1121. The second elastic member 15 is used to drive the rotating seat 1121 to slide until it abuts against the positioning post 1122. That is, when the rotating seat 1121 rotates relative to the main shaft 1111 to the target position, the rotating seat 1121 can automatically slide under the action of the second elastic member 15 until it abuts against the positioning post 1122, so as to drive at least one of the positioning posts 1122 to slide along the second direction X, and push the abutting member 12 to rotate around the first rotation axis a, so that the abutting member 12 pushes at least another positioning post 1122 to slide in a direction opposite to the sliding direction of at least one of the positioning posts 1122, thereby determining the rotation angle of the abutting member and keeping it stable.

[0094] Wherein, the second elastic member 15 is used to provide a second acting force along the second direction X to the rotating seat 1121, so that the rotating seat 1121 slides until it abuts against the positioning post 1122. That is, when the operator operates, only by stretching the rotating seat 1121 along the axial direction of the main shaft can the second acting force of the second elastic member 15 be overcome, making the operation process simple and convenient, and more in line with the operating habits of the human body. At the same time, since the second elastic member 15 always provides a pulling force towards the positioning post 1122 to the rotating seat 1121, the rotating seat 1121 can be kept in close contact with the positioning post 1122 to accommodate the errors caused by the machining or assembly accuracy of the osteotomy angle adjuster 10, thereby improving the stability and positioning accuracy of the femoral osteotomy positioning tool 1.

[0095] In some other embodiments, as Figure 8 shown, the osteotomy angle adjuster 10 further includes a first positioning assembly 16. The first positioning assembly 16 is connected between the fixed seat 1112 and the rotating seat 1121. The first positioning assembly 16 includes a first positioning member 161 and a third elastic member 162. One of the side of the rotating seat 1121 facing the fixed seat 1112 and the side of the fixed seat 1112 facing the rotating seat 1121 is provided with a plurality of first positioning grooves 1121a. The other is connected to one end of the third elastic member 162, and the other end of the third elastic member 162 is connected to the first positioning member 161. The plurality of first positioning grooves 1121a are arranged at intervals along the circumferential direction of the main shaft 1111; the third elastic member 162 is used to drive the first positioning member 161 to be engaged with one of the first positioning grooves 1121a.

[0096] That is, the fixed seat 1112 and the rotating seat 1121 can achieve mechanical positioning of the rotating seat 1121 in the rotation direction around the main shaft 1111 through the mutual cooperation of the first positioning member 161 and the first positioning groove 1121a. Among them, the installation position of the first positioning member 161 can correspond to the engraved line, and the positions of multiple first positioning grooves 1121a correspond to the scales, so that after the femoral osteotomy valgus angle is adjusted, the first positioning member 161 can be accurately clamped with the first positioning groove 1121a.

[0097] Among them, the third elastic member 162 is used to provide a third acting force along the axial direction of the main shaft 1111 to the first positioning member 161, so that the first positioning member 161 is clamped with one of the first positioning grooves 1121a, that is, the first positioning member 161 is vertically clamped with one of the first positioning grooves 1121a under the third acting force of the third elastic member 162 to further ensure the clamping accuracy between the first positioning member 161 and the first positioning groove 1121a.

[0098] Specifically, when adjusting the femoral osteotomy valgus angle, first move the first locking member 14 to the first unlocking position, and slide the first locking member 14 and the rotating seat 1121 synchronously relative to the main shaft 1111 to separate the first positioning member 161 from the first positioning groove 1121a. Then rotate the rotating seat 1121 and the first locking member 14 synchronously to the target angle. After that, move the first locking member 14 to the first locking position, and at the same time, the first positioning member 161 is clamped with one of the first positioning grooves 1121a, thereby realizing the locking of the rotating seat 1121 with the fixed seat 1112 and the main shaft 1111.

[0099] It should be noted that the fixed seat 1112 and the rotating seat 1121 can also directly adopt the cooperation mode of teeth and grooves, that is, a tooth structure is convexly provided at the position corresponding to the engraved line, and a plurality of groove structures are correspondingly formed at the position corresponding to the scale. When the rotating seat 1121 rotates to the target angle, the tooth is correspondingly clamped with one of the grooves, thereby realizing the locking of the rotating seat 1121 in the rotation direction around the main shaft 1111.

[0100] Optionally, as Figure 9 and Figure 10 shown, a first through hole 2111 is formed in the slider 211, and the first through hole 2111 extends along the first direction Y. As Figures 12 to 14 shown, the second adjusting component 212 includes a driving shaft 2123. The driving shaft 2123 is located in the first through hole 2111. The driving shaft 2123 is movably connected to the slider 211. The driving shaft 2123 can rotate relative to the slider 211 around the second rotation axis b. An eccentric wheel 2122 is formed on one side of the driving shaft 2123. The driving shaft 2123 is used to drive the eccentric wheel 2122 to rotate in the rotating groove 221, so that the slider 211 reciprocally slides in a direction close to or away from the osteotomy angle adjuster 10.

[0101] That is, the drive shaft 2123 is inserted into the first through hole 2111 and connected to the slider 211. The drive shaft 2123 is used to receive a driving force and rotate about the second rotation axis b, and then drive the eccentric wheel 2122 to rotate in the rotation groove 221. Through the mutual cooperation of the eccentric wheel 2122 and the rotation groove 221, the slider 211 reciprocally slides relative to the slider 211 along the direction of approaching or departing from the osteotomy angle adjuster 10 under the action of the mutual acting force between the eccentric wheel 2122 and the eccentric groove, thereby directly driving the osteotomy block 30 to reciprocally move along the direction of approaching or departing from the osteotomy angle adjuster 10, and further realizing the adjustment of the femoral osteotomy thickness.

[0102] Among them, as Figure 10 shown, a spline tooth 2123b is convexly provided on one of the outer surface of the drive shaft 2123 and the inner wall of the first through hole 2111, and a plurality of tooth grooves 2111a are provided at the position corresponding to the spline tooth 2123b. The plurality of tooth grooves 2111a are arranged along the circumferential direction of the first through hole 2111 or the drive shaft 2123, that is, when the plurality of tooth grooves 2111a are provided on the inner wall of the first through hole 2111, the plurality of tooth grooves 2111a are arranged along the circumferential direction of the first through hole 2111, and when the plurality of tooth grooves 2111a are provided on the outer surface of the drive shaft 2123, the plurality of tooth grooves 2111a are arranged along the circumferential direction of the drive shaft 2123. The spline tooth 2123b is used to be engaged with one of the tooth grooves 2111a, and the drive shaft 2123 can reciprocally move relative to the slider 211 along the first direction Y so that the spline tooth 2123b can be engaged with or separated from the tooth groove 2111a.

[0103] That is, the rotation angle of the drive shaft 2123 is limited by the mutual cooperation of the spline tooth 2123b and the tooth groove 2111a between the drive shaft 2123 and the slider 211. When adjusting the femoral osteotomy thickness, the drive shaft 2123 is used to receive a driving force and move along the first direction Y, so that the spline tooth 2123b is separated from the tooth groove 2111a, and then the drive shaft 2123 is rotated to the target angle. After that, the drive shaft 2123 moves in the opposite direction under the action of the driving force, so that the spline tooth 2123b is engaged with the tooth groove 2111a, thereby realizing the locking of the femoral osteotomy thickness.

[0104] It should be noted that scale lines are provided at the positions corresponding to the spline tooth 2123b on the drive shaft 2123 and the slider 211, and scales are provided at the positions corresponding to the tooth grooves 2111a, so as to indicate the final femoral osteotomy thickness, thereby helping to determine the osteotomy size of the femur and the prosthesis size required in knee joint replacement surgery.

[0105] In some embodiments, such as Figure 10 and Figure 13As shown, the second adjustment component 212 further includes a rotating frustum 2121. The rotating frustum 2121 is located within the first through hole 2111. The rotating frustum 2121 is connected between the drive shaft 2123 and the eccentric wheel 2122. The drive shaft 2123 is used to drive the rotating frustum 2121 to rotate about the second rotation axis b. The rotating frustum 2121 drives the eccentric wheel 2122 to rotate within the rotation groove 221, so that the slider 211 reciprocally slides in a direction close to or away from the osteotomy angle adjuster 10. That is, the drive shaft 2123 drives the rotation of the eccentric wheel 2122 through the rotating frustum 2121, and the drive shaft 2123 and the rotating frustum 2121 are coaxial and can both rotate about the second rotation axis b. The rotating frustum 2121 and the eccentric wheel 2122 together form a cam structure. The setting of the rotating frustum 2121 helps with the eccentric design of the eccentric wheel 2122.

[0106] Wherein, the osteotomy thickness adjuster 20 further includes a fourth elastic member 23. The fourth elastic member 23 is connected between the drive shaft 2123 and the rotating frustum 2121. The fourth elastic member 23 is used to drive the drive shaft 2123 to move along the first direction Y, so that the engaging teeth 2123b are engaged with one of the tooth grooves 2111a. That is, when the drive shaft 2123 moves along the first direction Y against the acting force of the fourth elastic member 23, the engaging teeth 2123b are separated from the tooth groove 2111a. Then, after driving the rotating frustum 2121 to drive the eccentric wheel 2122 to rotate within the rotation groove 221, the drive shaft 2123 can automatically move in the opposite direction to the previous one under the action of the acting force of the fourth elastic member 23 until the engaging teeth 2123b are engaged with one of the tooth grooves 2111a, so as to lock the rotation angle of the drive shaft 2123, and thus lock the osteotomy thickness of the femur.

[0107] Wherein, the fourth elastic member 23 is used to provide a fourth acting force along the first direction Y to the drive shaft 2123, so that the drive shaft 2123 moves along the first direction Y, thereby making the engaging teeth 2123b engaged with one of the tooth grooves 2111a. That is, when the operator is operating, simply pressing the drive shaft 2123 along the axial direction of the drive shaft 2123 can overcome the fourth acting force of the fourth elastic member 23, making the operation process simple and convenient, and more in line with the operating habits of the human body.

[0108] It should be noted that in addition to the direct pressing method, the drive shaft 2123 can also be used in cooperation with other instruments, such as a screwdriver. When in use, insert the screwdriver into the drive shaft 2123, then press the screwdriver to separate the engaging teeth 2123b from the tooth groove 2111a, and then rotate the screwdriver to make the drive shaft 2123 rotate about the second rotation axis b, and drive the rotating frustum 2121 and the eccentric wheel 2122 to rotate, so as to realize the adjustment of the osteotomy thickness.

[0109] In other embodiments, such as Figure 17As shown, the osteotomy thickness adjuster 20 further includes a second positioning assembly 24. The second positioning assembly 24 is located within the first through hole 2111 and is connected between the slider 211 and the drive shaft 2123. The second positioning assembly 24 includes a second positioning member 241 and a fifth elastic member 242. A plurality of second positioning grooves 2123a are formed in one of the outer surface of the drive shaft 2123 and the inner wall of the first through hole 2111, and the other is connected to one end of the fifth elastic member 242. The other end of the fifth elastic member 242 is connected to the second positioning member 241. The plurality of second positioning grooves 2123a are arranged at intervals along the circumferential direction of the first through hole 2111 or the drive shaft 2123. The fifth elastic member 242 is configured to drive the second positioning member 241 to engage with one of the second positioning grooves 2123a.

[0110] That is, the drive shaft 2123 and the slider 211 can achieve mechanical positioning of the drive shaft 2123 in the rotational direction around the second rotation axis b through the mutual cooperation of the second positioning member 241 and the fifth elastic member 242. Among them, the position where the second positioning member 241 is provided can correspond to the scale line on the drive shaft 2123 or the slider 211, and the positions of the plurality of second positioning grooves 2123a can correspond to the corresponding scales, so that after the femoral osteotomy thickness is adjusted, the second positioning member 241 can accurately engage with the second positioning groove 2123a.

[0111] Among them, the fifth elastic member 242 is configured to provide a fifth acting force along the radial direction of the drive shaft 2123 to the second positioning member 241, so that the second positioning member 241 engages with one of the second positioning grooves 2123a. That is, the second positioning member 241 vertically engages with one of the second positioning grooves 2123a under the fifth acting force of the fifth elastic member 242 to further ensure the engagement accuracy between the second positioning member 241 and the second positioning groove 2123a.

[0112] Optionally, as Figure 10 、 Figure 15 and Figure 18 shown, the osteotomy thickness adjuster 20 further includes a second locking member 25. The second locking member 25 is movably connected to the slider 211, so that the second locking member 25 can move between a second locked position and a second unlocked position. When the second locking member 25 is in the second locked position, the second locking member 25 is configured to lock the slider 211 and the osteotomy block 30. When the second locking member 25 is in the second unlocked position, the second locking member 25 is configured to release the lock between the slider 211 and the osteotomy block 30, so that the osteotomy block 30 and the slider 211 are detachable. That is, the osteotomy thickness adjuster 20 realizes detachable connection with the osteotomy block 30 through the second locking member 25, so as to facilitate stable locking of the osteotomy block 30 and rapid removal after positioning during the adjustment of the femoral osteotomy thickness and valgus angle.

[0113] Among them, as Figure 10 and Figure 11As shown, a first locking hole 2112 is formed in the slider 211. The first locking hole 2112 is for the insertion of a second locking member 25. The slider 211 includes a mounting surface 2113 for mounting the osteotomy block 30. A mounting hole 2114 is formed in the mounting surface 2113, and the mounting hole 2114 communicates with the first locking hole 2112; As Figure 16 shown, the osteotomy block 30 has a mounting portion 31. The mounting portion 31 is for insertion into the mounting hole 2114 and is detachably connected to the slider 211 through the second locking member 25.

[0114] That is, the second locking member 25 is inserted into the slider 211 through the first locking hole 2112. The mounting portion 31 of the osteotomy block 30 is inserted into the slider 211 through the mounting hole 2114 and is inserted into the first locking hole 2112 of the slider 211, so that the mounting portion 31 of the osteotomy block 30 is detachably connected to the second locking member 25 in the first locking hole 2112, to achieve the detachable connection between the osteotomy block 30 and the osteotomy thickness adjuster 20, and the arrangement of the mounting portion 31 and the mounting hole 2114 can not only realize the connection between the osteotomy block 30 and the osteotomy thickness adjuster 20, but also realize the positioning between the osteotomy block 30 and the osteotomy thickness adjuster 20.

[0115] In some embodiments, as Figure 15 and Figure 16 shown, a second locking hole 251 is formed in the second locking member 25 at a position corresponding to the mounting hole 2114. The mounting portion 31 is for insertion into the mounting hole 2114 and the second locking hole 251; A second limiting portion 252 protrudes from one of the inner surface of the second locking hole 251 and the outer surface of the mounting portion 31, and a second limiting groove 311 is formed at a position corresponding to the second limiting portion 252. When the second locking member 25 is in the second locking position, the second limiting portion 252 is engaged with the second limiting groove 311 to lock the slider 211 and the osteotomy block 30. When the second locking member 25 is in the second unlocking position, the second limiting portion 252 is separated from the second limiting groove 311 to release the locking of the slider 211 and the osteotomy block 30.

[0116] That is, when the osteotomy block 30 is installed, the second locking member 25 is inserted into the first locking hole 2112. The mounting portion 31 of the osteotomy block 30 is inserted into the slider 211 through the mounting hole 2114 and is inserted into the second locking hole 251 of the second locking member 25. The second locking member 25 is for receiving a driving force to insert the second limiting portion 252 into the second limiting groove 311, or to remove the second limiting portion 252 from the second limiting groove 311, so as to realize the assembly and disassembly of the osteotomy block 30 and the osteotomy thickness adjuster 20.

[0117] In other embodiments, as Figures 19 to 21As shown, the second locking member 25 is rotatably connected to the slider 211, enabling the second locking member 25 to rotate between a second locked position and a second unlocked position. A second card slot 35 is formed on the outer surface of the osteotomy block 30. When the second locking member 25 is in the second locked position, the second locking member 25 is engaged with the second card slot 35 to lock the slider 211 and the osteotomy block 30; when the second locking member 25 is in the second unlocked position, the second locking member 25 is separated from the second card slot 35 to release the locking of the slider 211 and the osteotomy block 30.

[0118] Wherein, the second locking member 25 forms a second engaging portion 253 at a position corresponding to the second card slot 35, such that the second locking member 25 forms a hook-like structure at the engaging position. The second locking member 25 is adapted to receive a driving force to rotate between the second locked position and the second unlocked position. When the second locking member 25 is in the second locked position, the second engaging portion 253 is hooked into the second card slot 35, thereby engaging the second locking member 25 with the second card slot 35 to keep the slider 211 and the osteotomy block 30 relatively fixed and ensure the synchronous adjustment of the osteotomy block 30 and the slider 211; when the second locking member 25 is in the second unlocked position, the second engaging portion 253 disengages from the second card slot 35, thereby separating the second locking member 25 from the second card slot 35 to enable the removal between the slider 211 and the osteotomy block 30.

[0119] Optionally, as Figure 19 shown, the osteotomy thickness adjuster 20 further includes a sixth elastic member 26. The sixth elastic member 26 is connected between the second locking member 25 and the slider 211. The sixth elastic member 26 is adapted to drive the second locking member 25 to move from the second unlocked position to the second locked position. That is, the second locking member 25 is elastically connected to the slider 211 through the sixth elastic member 26. When moving the second locking member 25 from the second locked position to the second unlocked position, the operator only needs to press or pull the second locking member 25 against the acting force of the sixth elastic member 26 to make the second locking member 25 in a state separated from the osteotomy block 30 or in a state where the osteotomy block 30 can be installed; after the installation or disassembly is completed, the operator only needs to release the second locking member 25, and the second locking member 25 can automatically move from the second unlocked position to the second locked position under the action of the sixth elastic member 26 to lock the osteotomy block 30 or return to the initial state. That is to say, the setting of the sixth elastic member 26 helps to simplify the installation and disassembly process of the osteotomy thickness adjuster 20 and the osteotomy block 30.

[0120] Optionally, as Figure 1As shown, the femoral osteotomy positioning tool 1 further includes an intramedullary rod 40. The intramedullary rod 40 is movably connected to the first adjustment mechanism 11 and the abutting member 12 along the second direction X. The intramedullary rod 40 is used to be inserted into the femur, that is, the intramedullary rod 40 is inserted into the femur through the osteotomy angle adjuster 10. Specifically, the osteotomy angle adjuster 10 includes a main shaft 1111 and an abutting member 12. An axial through hole is provided in the center of the main shaft 1111. The abutting member 12 is rotatably connected to one end of the main shaft 1111, and a through hole is also provided at the position corresponding to the center of the main shaft 1111 on the abutting member 12. During use, the intramedullary rod 40 sequentially passes through the central through hole of the main shaft 1111 and the through hole on the abutting member 12 and is inserted into the femur to achieve the positioning function of the femoral osteotomy positioning tool 1.

[0121] In some embodiments, as Figure 1 shown, the osteotomy angle adjuster 10 further includes a locking knob 17. The locking knob 17 is movably connected to the end of the main shaft 1111 away from the abutting member 12, and the locking knob 17 is of a hollow structure. The locking knob 17 and the main shaft 1111 can be fixedly connected in a threaded fit manner. During use, the intramedullary rod 40 needs to sequentially pass through the locking knob 17, the main shaft 1111, and the abutting member 12. After the intramedullary rod 40 is inserted to an appropriate position, by tightening the locking knob 17, the position of the intramedullary rod 40 in the main shaft 1111 can be locked.

[0122] Among them, as Figure 4 and Figure 5 shown, at the end of the main shaft 1111 away from the abutting member 12, that is, at the end where the main shaft 1111 is connected to the locking knob 17, a plurality of strip-shaped grooves are provided. The strip-shaped grooves extend along the axial direction of the main shaft 1111. The plurality of strip-shaped grooves are arranged at intervals along the circumferential direction of the main shaft 1111. A clamping piece is formed between adjacent two strip-shaped grooves. The outer contour of the clamping piece can be set as a conical surface, and the inner cavity of the locking knob 17 is correspondingly set as a conical surface. When the intramedullary rod 40 is inserted and the locking knob 17 is screwed in, the two conical surfaces are in tight fit. The clamping piece elastically deforms inward and contacts the intramedullary rod 40 to increase the friction between the clamping piece and the intramedullary rod 40 and lock the intramedullary rod 40. When the intramedullary rod 40 is removed, the locking knob 17 is screwed out to separate the two conical surfaces. The deformation of the clamping piece is restored and separated from the intramedullary rod 40, thereby releasing the locking of the intramedullary rod 40.

[0123] Secondly, the embodiment of the present application further provides an osteotomy angle adjuster, as Figure 2 and Figure 3As shown, the osteotomy angle adjuster 10 includes an abutment member 12, a fixing assembly 111 and a first adjustment assembly 112, the abutment member 12 includes an abutment surface 121 for abutting against the distal end of the femur, the fixing assembly 111 extends along the second direction X, one end of the fixing assembly 111 is rotatably connected to the abutment member 12, the first adjustment assembly 112 is movably connected to the fixing assembly 111, the first adjustment assembly 112 abuts against a side of the abutment member 12 away from the abutment surface 121, the first adjustment assembly 112 is used to drive the abutment member 12 to rotate around the first rotation axis a to adjust the femoral osteotomy valgus angle, the femoral osteotomy valgus angle is the angle α between the abutment surface 121 and a plane perpendicular to the second direction X, and the extension direction of the first rotation axis a is approximately perpendicular to the second direction X.

[0124] That is, the fixing assembly 111 is used to support the first adjusting assembly 112 to ensure the stability of the first adjusting assembly 112 during the adjustment process. The first adjusting assembly 112 pushes the abutment member 12 to rotate around the first rotation axis a by abutting against the abutment member 12. If the second direction X is regarded as the horizontal direction, the extension direction of the first rotation axis a is roughly the vertical direction, that is, during the rotation of the abutment member 12, the abutment surface 121 is always roughly parallel to the vertical direction. After the rotation, the angle α between the abutment surface 121 and the plane perpendicular to the second direction X is the valgus angle of the femoral osteotomy.

[0125] The osteotomy angle adjuster 10 includes a first locking member 14, which is movably connected to the first adjustment component 112 so that the first locking member 14 can move between a first locking position and a first unlocking position. When the first locking member 14 is located at the first locking position, the first locking member 14 is connected to the fixing component 111 to lock the first adjustment component 112 to the fixing component 111, thereby preventing the first adjustment component 112 from being separated from the abutment member 12; when the first locking member 14 is located at the first unlocking position, the first locking member 14 is separated from the fixing component 111 to release the lock between the first adjustment component 112 and the fixing component 111, thereby allowing the first adjustment component 112 to be separated from the abutment member 12.

[0126] That is, when the first locking member 14 moves between the first locking position and the first unlocking position, the first locking member 14 locks and unlocks the first adjusting member 112 by connecting and separating with the fixing member 111, so that when the first locking member 14 is in the first locking position, the first adjusting member 112 can stably abut against the abutment member 12 to ensure the stability of the abutment member 12 during the use of the femoral osteotomy positioning tool 1, thereby ensuring the stability and accuracy of the femoral osteotomy valgus angle. When the first locking member 14 is in the first unlocking position, the first locking member 14 is separated from the fixing member 111, so that the first locking member 14 can move relative to the fixing member 111 together with the first adjusting member 112, so as to accurately adjust the femoral osteotomy valgus angle.

[0127] Optional, such as Figure 3 and Figure 4 As shown, the fixing assembly 111 includes a main shaft 1111 and a fixing seat 1112 which are connected to each other. The main shaft 1111 extends along the second direction X, and the fixing seat 1112 is sleeved on the main shaft 1111, that is, the main shaft 1111 serves as the supporting shaft of the osteotomy angle adjuster 10, and is used to ensure the overall structural stability of the osteotomy angle adjuster 10. When in use, the axial direction of the main shaft 1111 is consistent with the axial direction of the femur, and the fixing seat 1112 is directly sleeved on the main shaft 1111 and fixedly connected to the main shaft 1111.

[0128] The first adjustment component 112 includes a rotating seat 1121 and a plurality of positioning posts 1122. The rotating seat 1121 is sleeved on the main shaft 1111. The rotating seat 1121 is movably connected to the fixed seat 1112. The rotating seat 1121 and the fixed seat 1112 are respectively provided with engraved lines and scales for indicating the valgus angle of the femoral osteotomy. The positioning posts 1122 extend along the second direction X. The plurality of positioning posts 1122 are distributed along the circumference of the main shaft 1111. The positioning posts 1122 are slidably connected to the fixed seat 1112, that is, the extension direction of the positioning posts 1122 is consistent with the extension direction of the main shaft 1111, and the positioning posts 1122 can slide back and forth in the second direction X relative to the fixed seat 1112.

[0129] Among them, one end of the positioning column 1122 is used to abut against the side of the abutment 12 away from the abutment surface 121, and the other end of the positioning column 1122 is used to abut against the rotating seat 1121. The rotating seat 1121 is used to rotate around the main axis 1111 to drive at least one of the positioning columns 1122 to slide along the second direction X and push the abutment 12 to rotate around the first rotation axis a, so that the abutment 12 pushes at least another positioning column 1122 to slide in a direction opposite to the sliding direction of at least one of the positioning columns 1122.

[0130] That is, the positioning post 1122 abuts between the abutting member 12 and the rotating base 1121. The surface of the rotating base 1121 that abuts against the positioning post 1122 is an inclined surface. After the rotating base 1121 rotates around the main shaft 1111, some of the positioning posts 1122 that abut against a position on the inclined surface closer to the fixed base 1112 will push the abutting surface 121 to rotate around the first rotation axis a. When the abutting member 12 rotates, it will push the remaining positioning posts 1122 to slide in a direction opposite to the sliding direction of the above-mentioned part of the positioning posts 1122 and abut against a position on the inclined surface relatively far from the fixed base 1112. The change in the abutting positions of the multiple positioning posts 1122 on the inclined surface can be converted into the rotation angle of the abutting member 12 and corresponds to the scale on the fixed base 1112, so as to realize the regulation of the femoral osteotomy valgus angle. The adjustment range of the femoral osteotomy valgus angle can be regulated according to the design of the inclination angle of the inclined surface on the rotating base 1121, and the specific adjustment range of its valgus angle can be set to ±3° to ±13°.

[0131] It should be noted that the positive and negative values of the valgus angle represent that, relative to the valgus angle of 0°, the abutting member 12 has two rotation directions. If the valgus angle after rotating in one direction is defined as positive, then the valgus angle after rotating in the other direction is defined as negative.

[0132] In some embodiments, as Figures 3 to 5 shown, the first locking member 14 is movably connected to the rotating base 1121, that is, when adjusting the femoral osteotomy valgus angle, the first locking member 14 moves synchronously with the rotating base 1121. When the first locking member 14 is in the first locking position, the first locking member 14 is clamped with the main shaft 1111 to lock the rotating base 1121 to the main shaft 1111, preventing the rotating base 1121 from sliding relative to the main shaft 1111, thereby preventing the positioning post 1122 from disengaging from the abutting member 12; when the first locking member 14 is in the first unlocking position, the first locking member 14 is separated from the main shaft 1111 to release the locking of the rotating base 1121 and the main shaft 1111, so that the rotating base 1121 can slide relative to the main shaft 1111 and the positioning post 1122 can disengage from the abutting member 12. That is, the first locking member 14 realizes the movement between the first locking position and the first unlocking position through the clamping and separation with the main shaft 1111.

[0133] Among them, as Figure 5As shown, a first limiting groove 1111a is formed on the outer surface of the main shaft 1111 or one of the first locking members 14, and a first limiting portion 141 is formed at a position corresponding to the first limiting groove 1111a in the other; when the first locking member 14 is in the first locked position, the first limiting portion 141 is engaged with the first limiting groove 1111a to engage the first locking member 14 with the main shaft 1111; when the first locking member 14 is in the first unlocked position, the first limiting portion 141 is separated from the first limiting groove 1111a to separate the first locking member 14 from the main shaft 1111. That is, the first locking member 14 and the main shaft 1111 are engaged and separated through the mutual cooperation of the first limiting portion 141 and the first limiting groove 1111a, so as to realize the movement of the first locking member 14 between the first locked position and the first unlocked position.

[0134] As Figure 3 shown, the first locking member 14 includes a locking portion 143 and a pressing portion 144 which are connected to each other. The locking portion 143 is movably connected to the rotating seat 1121. The locking portion 143 is annular and sleeved on the main shaft 1111. The pressing portion 144 partially protrudes from the outer surface of the rotating seat 1121. The pressing portion 144 is used to drive the locking portion 143 to move between the first locked position and the first unlocked position. That is, the annular locking portion 143 is directly sleeved on the main shaft 1111. The locking portion 143 is used to engage or separate from the main shaft 1111. The pressing portion 144 is used to receive a driving force to drive the locking portion 143 to move between the first locked position and the first unlocked position. When the locking portion 143 is in the first locked position, the locking portion 143 is engaged with the main shaft 1111. When the locking portion 143 is in the first unlocked position, the locking portion 143 is separated from the main shaft 1111.

[0135] Among them, an opening can be formed on the outer surface of the rotating seat 1121. The locking portion 143 is directly inserted into the rotating seat 1121, and the pressing portion 144 protrudes from the outer surface of the rotating seat 1121 to facilitate receiving a driving force. By directly inserting the first locking member 14 into the rotating seat 1121, the structure of the osteotomy angle adjuster 10 can be made more compact. At the same time, since the first locking member 14 moves synchronously with the rotating seat 1121, this structural design also facilitates the operation of the operator and helps to quickly adjust the valgus angle of femoral osteotomy.

[0136] When the locking part 143 and the main shaft 1111 are clamped and separated through the mutual cooperation of the first limiting part 141 and the first limiting groove 1111a, the first limiting part 141 and the first limiting groove 1111a can be respectively arranged on the inner surface of the annular locking part 143 and the outer surface of the main shaft 1111, and the first limiting part 141 and the first limiting groove 1111a can be respectively arranged in an annular shape along the circumferential direction of the main shaft 1111. Thus, when adjusting the valgus angle of femoral osteotomy, after the first locking member 14 and the rotating seat 1121 rotate a certain angle relative to the main shaft 1111 together, the first limiting part 141 can always be clamped with the first limiting groove 1111a to lock the rotating seat 1121 and prevent the rotating seat 1121 from sliding in the direction opposite to the second direction X.

[0137] Specifically, the first limiting part 141 protrudes from the inner surface of the locking part 143, and the first limiting groove 1111a is formed on the outer surface of the main shaft 1111. Both the first limiting part 141 and the first limiting groove 1111a are annular, and the inner diameter of the annular first limiting part 141 is greater than or equal to the outer diameter of the main shaft 1111, so that the first limiting part 141 can be completely separated from the first limiting groove 1111a, and thus the first locking member 14 can slide synchronously with the rotating seat 1121 relative to the main shaft 1111.

[0138] When the locking part 143 is in the first locking position, the part of the first limiting part 141 away from the pressing part 144 is clamped with the first limiting groove 1111a, and the part of the first limiting part 141 close to the pressing part 144 is separated from the first limiting groove 1111a; when the locking part 143 needs to move from the first locking position to the first unlocking position, a force is applied to the pressing part 144 to separate the part of the first limiting part 141 away from the pressing part 144 from the first limiting groove 1111a. Although the part of the first limiting part 141 close to the pressing part 144 approaches the first limiting groove 1111a, it is still in a separated state from the first limiting groove 1111a, thereby realizing the separation of the first limiting part 141 from the first limiting groove 1111a.

[0139] In some other embodiments, such as Figure 6 and Figure 7As shown, the first locking member 14 is movably connected to the rotating seat 1121, that is, when adjusting the valgus angle of femoral osteotomy, the first locking member 14 and the rotating seat 1121 move synchronously. When the first locking member 14 is in the first locking position, the first locking member 14 is clamped with the fixed seat 1112 to lock the rotating seat 1121 to the fixed seat 1112, preventing the rotating seat 1121 from sliding relative to the main shaft 1111, thereby preventing the positioning column 1122 from separating from the abutting member 12; when the first locking member 14 is in the first unlocking position, the first locking member 14 is separated from the fixed seat 1112 to release the locking between the rotating seat 1121 and the fixed seat 1112, enabling the rotating seat 1121 to slide relative to the main shaft 1111 and the positioning column 1122 to separate from the abutting member 12. That is, the first locking member 14 realizes the movement between the first locking position and the first unlocking position through the clamping and separation with the fixed seat 1112.

[0140] As Figure 7 shown, the first locking member 14 is rotatably connected to the rotating seat 1121 so that the first locking member 14 rotates between the first locking position and the first unlocking position, and a first card slot 1112a is formed on the outer surface of the fixed seat 1112. When the first locking member 14 is in the first locking position, the first locking member 14 is clamped with the first card slot 1112a to lock the rotating seat 1121 to the fixed seat 1112; when the first locking member 14 is in the first unlocking position, the first locking member 14 is separated from the first card slot 1112a to release the locking between the rotating seat 1121 and the fixed seat 1112.

[0141] Wherein, the first locking member 14 forms a first clamping portion 142 at a position corresponding to the first card slot 1112a, so that the first locking member 14 forms a hook-like structure at the clamping position. The first locking member 14 is used to receive a driving force to rotate between the first locking position and the first unlocking position. When the first locking member 14 is in the first locking position, the first clamping portion 142 hooks into the first card slot 1112a, so that the first locking member 14 is clamped with the first card slot 1112a, keeping the rotating seat 1121 fixed relative to the fixed seat 1112, avoiding the rotating seat 1121 from sliding relative to the main shaft 1111, thereby preventing the positioning column 1122 from separating from the abutting member 12, and further ensuring the stability of the abutting member 12 during use; when the first locking member 14 is in the first unlocking position, the first clamping portion 142 disengages from the first card slot 1112a, so that the first locking member 14 is separated from the first card slot 1112a, enabling the first locking member 14 and the rotating seat 1121 to slide synchronously relative to the main shaft 1111 and the positioning column 1122 to separate from the abutting member 12, thus facilitating the adjustment of the valgus angle of femoral osteotomy.

[0142] Optionally, as Figure 5 and Figure 7As shown, the osteotomy angle adjuster 10 further includes a first elastic member 13. The first elastic member 13 is connected between the first locking member 14 and the rotating seat 1121. The first elastic member 13 is used to drive the first locking member 14 to move from the first unlocking position to the first locking position. That is, the first locking member 14 is elastically connected to the rotating seat 1121 through the first elastic member 13. When the first locking member 14 is moved from the first locking position to the first unlocking position, the operator only needs to overcome the acting force of the first elastic member 13 to press or stretch the first locking member 14, so that the first locking member 14 is separated from the main shaft 1111 and / or the fixed seat 1112, and then the first locking member 14 and the rotating seat 1121 can be moved synchronously to adjust the valgus angle of femoral osteotomy. After the adjustment is completed, the operator only needs to release the first locking member 14, and the first locking member 14 can automatically move from the first unlocking position to the first locking position under the action of the first elastic member 13, which helps to simplify the adjustment method of the valgus angle of femoral osteotomy.

[0143] Wherein, the first elastic member 13 is used to provide a first acting force along the radial direction of the main shaft 1111 to the first locking member 14, so that the first locking member 14 moves from the first unlocking position to the first locking position. That is, when the operator operates, the first acting force to be overcome also acts along the radial direction of the main shaft 1111, making the operation process more in line with the human operation habit.

[0144] In some embodiments, as Figure 4 and Figure 5 shown, the osteotomy angle adjuster 10 further includes a second elastic member 15. The second elastic member 15 is connected between the main shaft 1111 and the rotating seat 1121. The second elastic member 15 is used to drive the rotating seat 1121 to slide until it abuts against the positioning post 1122. That is, when the rotating seat 1121 rotates relative to the main shaft 1111 to the target position, the rotating seat 1121 can automatically slide until it abuts against the positioning post 1122 under the action of the second elastic member 15, so as to drive at least one of the positioning posts 1122 to slide along the second direction X, and push the abutting member 12 to rotate around the first rotation axis a, so that the abutting member 12 pushes at least another positioning post 1122 to slide in the direction opposite to the sliding direction of at least one of the positioning posts 1122, thereby determining the rotation angle of the abutting member and keeping it stable.

[0145] Among them, the second elastic member 15 is used to provide a second acting force in the second direction X to the rotating seat 1121, so that the rotating seat 1121 slides to abut against the positioning post 1122. That is, when the operator operates, only by stretching the rotating seat 1121 along the axial direction of the main shaft can the second acting force of the second elastic member 15 be overcome, making the operation process simple and convenient, and more in line with the human operation habit. At the same time, since the second elastic member 15 always provides a pulling force towards the positioning post 1122 to the rotating seat 1121, the rotating seat 1121 can be kept in close contact with the positioning post 1122 to accommodate the errors caused by the machining or assembly accuracy of the osteotomy angle adjuster 10, thereby improving the stability and positioning accuracy of the femoral osteotomy positioning tool 1.

[0146] In some other embodiments, as Figure 8 shown, the osteotomy angle adjuster 10 further includes a first positioning assembly 16. The first positioning assembly 16 is connected between the fixed seat 1112 and the rotating seat 1121. The first positioning assembly 16 includes a first positioning member 161 and a third elastic member 162. One of the side of the rotating seat 1121 facing the fixed seat 1112 and the side of the fixed seat 1112 facing the rotating seat 1121 is provided with a plurality of first positioning grooves 1121a. The other is connected to one end of the third elastic member 162, and the other end of the third elastic member 162 is connected to the first positioning member 161. The plurality of first positioning grooves 1121a are arranged at intervals along the circumferential direction of the main shaft 1111; the third elastic member 162 is used to drive the first positioning member 161 to be clamped with one of the first positioning grooves 1121a.

[0147] That is, the fixed seat 1112 and the rotating seat 1121 can realize the mechanical positioning of the rotating seat 1121 in the rotation direction around the main shaft 1111 through the mutual cooperation of the first positioning member 161 and the first positioning groove 1121a. Among them, the setting position of the first positioning member 161 can correspond to the engraved line, and the positions of the plurality of first positioning grooves 1121a correspond to the scales, so that after the femoral osteotomy valgus angle is adjusted, the first positioning member 161 can be accurately clamped with the first positioning groove 1121a.

[0148] Among them, the third elastic member 162 is used to provide a third acting force along the axial direction of the main shaft 1111 to the first positioning member 161, so that the first positioning member 161 is clamped with one of the first positioning grooves 1121a. That is, the first positioning member 161 is vertically clamped with one of the first positioning grooves 1121a under the third acting force of the third elastic member 162 to further ensure the clamping accuracy of the first positioning member 161 and the first positioning groove 1121a.

[0149] Specifically, when adjusting the valgus angle of femoral osteotomy, first move the first locking member 14 to the first unlocking position, and slide the first locking member 14 and the rotating seat 1121 synchronously relative to the main shaft 1111 to separate the first positioning member 161 from the first positioning groove 1121a. Then rotate the rotating seat 1121 and the first locking member 14 synchronously to the target angle. After that, move the first locking member 14 to the first locking position, and at the same time, the first positioning member 161 is clamped with one of the first positioning grooves 1121a, so as to realize the locking of the rotating seat 1121 with the fixed seat 1112 and the main shaft 1111.

[0150] It should be noted that the fixed seat 1112 and the rotating seat 1121 can also directly adopt the cooperation mode of teeth and grooves, that is, a tooth structure is convexly provided at the corresponding position of the engraved line, and a plurality of groove structures are correspondingly formed at the position of the scale. When the rotating seat 1121 rotates to the target angle, the tooth is clamped with one of the grooves, so as to realize the locking of the rotating seat 1121 in the rotation direction around the main shaft 1111.

[0151] In some embodiments, as Figure 1 shown, the osteotomy angle adjuster 10 further includes a locking knob 17. The locking knob 17 is movably connected to one end of the main shaft 1111 away from the abutting member 12, and the locking knob 17 is a hollow structure. The locking knob 17 and the main shaft 1111 can be fixedly connected by means of a threaded fit. When in use, the intramedullary rod 40 needs to pass through the locking knob 17, the main shaft 1111 and the abutting member 12 in sequence. After the intramedullary rod 40 is inserted to an appropriate position, by tightening the locking knob 17, the locking of the intramedullary rod 40 in the main shaft 1111 can be realized.

[0152] Among them, as Figure 4 and Figure 5 shown, one end of the main shaft 1111 away from the abutting member 12, that is, the end of the main shaft 1111 connected to the locking knob 17, is provided with a plurality of strip-shaped grooves. The strip-shaped grooves extend along the axial direction of the main shaft 1111, and the plurality of strip-shaped grooves are arranged at intervals along the circumferential direction of the main shaft 1111. A clamping piece is formed between two adjacent strip-shaped grooves, and the outer contour of the clamping piece can be set as a conical surface, and the inner cavity of the locking knob 17 is correspondingly set as a conical surface. When the intramedullary rod 40 is inserted and the locking knob 17 is screwed in, the two conical surfaces are in close contact and cooperate, and the clamping piece elastically deforms inward and contacts the intramedullary rod 40 to increase the friction between the clamping piece and the intramedullary rod 40 and lock the intramedullary rod 40; when the intramedullary rod 40 is removed, the locking knob 17 is screwed out to separate the two conical surfaces, and the clamping piece deforms and recovers and disengages from the intramedullary rod 40, so as to release the locking of the intramedullary rod 40.

[0153] The embodiment of the present application also provides an osteotomy thickness adjuster, as Figure 9 、 Figure 10 、 Figure 12 and Figure 13As shown, the osteotomy thickness adjuster 20 includes a base 22, a slider 211, and a second adjustment assembly 212. A rotation groove 221 is formed on the base 22. The slider 211 is used to connect with the osteotomy block 30. The slider 211 is slidably connected to the base 22. The second adjustment assembly 212 is movably connected to the slider 211. The second adjustment assembly 212 can rotate relative to the slider 211 about a second rotation axis b. The second rotation axis b extends along a first direction Y. An eccentric wheel 2122 is formed at a position of the second adjustment assembly 212 corresponding to the rotation groove 221. The eccentric wheel 2122 is eccentrically arranged relative to the second rotation axis b. The eccentric wheel 2122 is used to be inserted into the rotation groove 221. The second adjustment assembly 212 is used to drive the eccentric wheel 2122 to rotate in the rotation groove 221, so that the slider 211 reciprocally slides in a direction substantially perpendicular to the first direction Y, thereby driving the osteotomy block 30 to reciprocally move in a direction substantially perpendicular to the first direction Y.

[0154] That is to say, the second adjustment assembly 212 drives the slider 211 to slide through the mutual cooperation between the eccentric wheel 2122 and the rotation groove 221, thereby driving the osteotomy block 30 to move, so as to realize the adjustment of the osteotomy thickness. The eccentric distance of the eccentric wheel 2122 relative to the second rotation axis b is the adjustment range of the osteotomy thickness. If the eccentric distance of the eccentric wheel is set as c, the adjustment range of the osteotomy thickness can be set as 9mm ± c. The eccentric distance c of the eccentric wheel can be selected and adjusted according to the actual design situation. For example, the range of c can be set as 1mm to 7mm.

[0155] Wherein, the rotation groove 221 has a quasi-elliptical structure with a long side and a short side. The distance between the two long sides is small, and the distance between the two short sides is large. When the second adjustment assembly 212 drives the eccentric wheel 2122 to rotate in the rotation groove 221, if the eccentric wheel 2122 rotates to contact one of the long sides, since the distance between the two long sides is small and cannot meet the rotation range of the eccentric wheel 2122, the eccentric wheel 2122 will apply a force to the side wall of the rotation groove 221 on the base 22. And the base 22 remains relatively fixed. The reaction force applied by the base 22 will act on the entire second adjustment assembly 212 through the eccentric wheel 2122, and then act on the slider 211, so that the slider 211 reciprocally slides relative to the base 22 in a direction substantially perpendicular to the first direction Y, and further drives the osteotomy block 30 to move, realizing the adjustment of the femoral osteotomy thickness.

[0156] It should be noted that when the osteotomy thickness adjuster 20 is assembled with the osteotomy angle adjuster 10, the base 22 of the osteotomy thickness adjuster 20 is connected to the abutting member 12 of the osteotomy angle adjuster 10, and the abutting member 12 includes an abutting surface 121 for abutting against the distal femur. When the abutting surface 121 of the abutting member 12 is a plane and the abutting surface 121 of the abutting member 12 is substantially parallel to the first direction Y, if the femoral osteotomy valgus angle is 0°, the moving direction of the osteotomy block 30 is substantially perpendicular to the first direction Y, that is, the moving direction of the osteotomy block 30 is substantially perpendicular to the abutting surface 121; if the femoral osteotomy valgus angle is α, although the moving direction of the osteotomy block 30 will deflect by an angle of α, it is still substantially perpendicular to the first direction Y, that is, the moving direction of the osteotomy block 30 is still substantially perpendicular to the abutting surface 121. Therefore, the reciprocating sliding of the slider 211 relative to the base 22 along a direction substantially perpendicular to the first direction Y means that the slider 211 reciprocates relative to the base 22 along a direction substantially perpendicular to the abutting surface 121.

[0157] Optionally, as Figure 9 and Figure 10 shown, a first through hole 2111 is formed in the slider 211, and the first through hole 2111 extends along the first direction Y. As Figures 12 to 14 shown, the second adjustment assembly 212 includes a drive shaft 2123. The drive shaft 2123 is located in the first through hole 2111. The drive shaft 2123 is movably connected to the slider 211. The drive shaft 2123 can rotate relative to the slider 211 about the second rotation axis b. An eccentric wheel 2122 is formed on one side of the drive shaft 2123. The drive shaft 2123 is used to drive the eccentric wheel 2122 to rotate in the rotation groove 221 so that the slider 211 reciprocates along a direction substantially perpendicular to the first direction Y.

[0158] That is, the drive shaft 2123 is inserted into the first through hole 2111 and connected to the slider 211. The drive shaft 2123 is used to receive a driving force and rotate about the second rotation axis b, and then drive the eccentric wheel 2122 to rotate in the rotation groove 221. Through the mutual cooperation of the eccentric wheel 2122 and the rotation groove 221, the slider 211 reciprocates relative to the slider 211 along a direction substantially perpendicular to the first direction Y under the action of the mutual acting force between the eccentric wheel 2122 and the eccentric groove, so as to directly drive the osteotomy block 30 to reciprocate along a direction substantially perpendicular to the first direction Y, thereby realizing the adjustment of the femoral osteotomy thickness.

[0159] Among them, as Figure 10As shown, a retaining tooth 2123b protrudes from one of the outer surface of the drive shaft 2123 and the inner wall of the first through hole 2111, and a plurality of tooth grooves 2111a are formed at positions corresponding to the retaining tooth 2123b. The plurality of tooth grooves 2111a are arranged along the circumferential direction of the first through hole 2111 or the drive shaft 2123. That is, when the plurality of tooth grooves 2111a are arranged on the inner wall of the first through hole 2111, the plurality of tooth grooves 2111a are arranged along the circumferential direction of the first through hole 2111, and when the plurality of tooth grooves 2111a are arranged on the outer surface of the drive shaft 2123, the plurality of tooth grooves 2111a are arranged along the circumferential direction of the drive shaft 2123. The retaining tooth 2123b is used to engage with one of the tooth grooves 2111a, and the drive shaft 2123 can reciprocally move relative to the slider 211 along the first direction Y so that the retaining tooth 2123b can engage with or disengage from the tooth groove 2111a.

[0160] That is, the rotation angle of the drive shaft 2123 is limited by the mutual cooperation between the retaining tooth 2123b and the tooth groove 2111a between the drive shaft 2123 and the slider 211. When adjusting the femoral osteotomy thickness, the drive shaft 2123 is used to receive a driving force and move along the first direction Y, so that the retaining tooth 2123b is disengaged from the tooth groove 2111a, and then the drive shaft 2123 is rotated to a target angle. After that, the drive shaft 2123 moves in the opposite direction under the action of the driving force, so that the retaining tooth 2123b engages with the tooth groove 2111a, thereby realizing the locking of the femoral osteotomy thickness.

[0161] It should be noted that scale lines are provided at positions corresponding to the retaining tooth 2123b on the drive shaft 2123 and the slider 211, and scales are provided at positions corresponding to the tooth grooves 2111a, so as to indicate the final femoral osteotomy thickness, which helps to determine the osteotomy size of the femur and the size of the prosthesis required in knee joint replacement surgery.

[0162] In some embodiments, as Figure 10 and Figure 13 shown, the second adjustment assembly 212 further includes a rotating turntable 2121. The rotating turntable 2121 is located in the first through hole 2111. The rotating turntable 2121 is connected between the drive shaft 2123 and the eccentric wheel 2122. The drive shaft 2123 is used to drive the rotating turntable 2121 to rotate around the second rotation axis b. The rotating turntable 2121 drives the eccentric wheel 2122 to rotate in the rotation groove 221, so that the slider 211 reciprocally slides in a direction substantially perpendicular to the first direction Y. That is, the drive shaft 2123 drives the rotation of the eccentric wheel 2122 through the rotating turntable 2121, and the drive shaft 2123 and the rotating turntable 2121 are coaxial and can both rotate around the second rotation axis b. The rotating turntable 2121 and the eccentric wheel 2122 together form a cam structure. The setting of the rotating turntable 2121 helps the eccentric design of the eccentric wheel 2122.

[0163] Among them, the osteotomy thickness adjuster 20 further includes a fourth elastic member 23. The fourth elastic member 23 is connected between the drive shaft 2123 and the rotating turntable 2121. The fourth elastic member 23 is used to drive the drive shaft 2123 to move along the first direction Y, so that the engaging teeth 2123b are engaged with one of the tooth grooves 2111a. That is, when the drive shaft 2123 moves along the first direction Y against the acting force of the fourth elastic member 23, the engaging teeth 2123b are separated from the tooth groove 2111a. Then, after the rotating turntable 2121 drives the eccentric wheel 2122 to rotate in the rotating groove 221, the drive shaft 2123 can automatically move in the opposite direction to the previous one under the action of the acting force of the fourth elastic member 23 until the engaging teeth 2123b are engaged with one of the tooth grooves 2111a, so as to lock the rotation angle of the drive shaft 2123, and thus lock the osteotomy thickness of the femur.

[0164] Among them, the fourth elastic member 23 is used to provide a fourth acting force along the first direction Y to the drive shaft 2123, so that the drive shaft 2123 moves along the first direction Y, so that the engaging teeth 2123b are engaged with one of the tooth grooves 2111a. That is, when the operator operates, he only needs to press the drive shaft 2123 along the axial direction of the drive shaft 2123 to overcome the fourth acting force of the fourth elastic member 23, making the operation process simple and convenient, and more in line with the operation habits of the human body.

[0165] It should be noted that in addition to the direct pressing method, the drive shaft 2123 can also be used in cooperation with other instruments, such as a screwdriver. When in use, the screwdriver is inserted into the drive shaft 2123, and then the engaging teeth 2123b are separated from the tooth groove 2111a by pressing the screwdriver. Then, the screwdriver is rotated to make the drive shaft 2123 rotate around the second rotation axis b, and drive the rotating turntable 2121 and the eccentric wheel 2122 to rotate, so as to adjust the osteotomy thickness.

[0166] In some other embodiments, as Figure 17 shown, the osteotomy thickness adjuster 20 further includes a second positioning assembly 24. The second positioning assembly 24 is located in the first through hole 2111 and is connected between the slider 211 and the drive shaft 2123. The second positioning assembly 24 includes a second positioning member 241 and a fifth elastic member 242; a plurality of second positioning grooves 2123a are formed in one of the outer surface of the drive shaft 2123 and the inner wall of the first through hole 2111, and the other is connected to one end of the fifth elastic member 242, and the other end of the fifth elastic member 242 is connected to the second positioning member 241. The plurality of second positioning grooves 2123a are arranged at intervals along the circumferential direction of the first through hole 2111 or the drive shaft 2123; the fifth elastic member 242 is used to drive the second positioning member 241 to be engaged with one of the second positioning grooves 2123a.

[0167] That is, the drive shaft 2123 and the slider 211 can achieve mechanical positioning of the drive shaft 2123 in the rotational direction around the second rotation axis b through the mutual cooperation of the second positioning member 241 and the fifth elastic member 242. Among them, the installation position of the second positioning member 241 can correspond to the engraved line on the drive shaft 2123 or the slider 211, and the positions of a plurality of second positioning grooves 2123a can correspond to the corresponding scales, so that after adjusting the femoral osteotomy thickness, the second positioning member 241 can be accurately clamped with the second positioning groove 2123a.

[0168] Among them, the fifth elastic member 242 is used to provide a fifth acting force along the radial direction of the drive shaft 2123 to the second positioning member 241, so that the second positioning member 241 is clamped with one of the second positioning grooves 2123a, that is, the second positioning member 241 is vertically clamped with one of the second positioning grooves 2123a under the fifth acting force of the fifth elastic member 242 to further ensure the clamping accuracy between the second positioning member 241 and the second positioning groove 2123a.

[0169] Optionally, as Figure 10 、 Figure 15 and Figure 18 shown, the osteotomy thickness adjuster 20 further includes a second locking member 25. The second locking member 25 is movably connected to the slider 211 so that the second locking member 25 can move between a second locked position and a second unlocked position; when the second locking member 25 is located at the second locked position, the second locking member 25 is used to lock the slider 211 and the osteotomy block 30; when the second locking member 25 is located at the second unlocked position, the second locking member 25 is used to release the lock between the slider 211 and the osteotomy block 30, so that the osteotomy block 30 and the slider 211 are detachable. That is, the osteotomy thickness adjuster 20 realizes detachable connection with the osteotomy block 30 through the second locking member 25, so as to facilitate the stable locking of the osteotomy block 30 during the femoral osteotomy thickness adjustment process and the rapid removal after positioning.

[0170] Among them, as Figure 10 and Figure 11 shown, a first locking hole 2112 is formed on the slider 211. The first locking hole 2112 is used for the second locking member 25 to be inserted. The slider 211 includes an installation surface 2113 for installing the osteotomy block 30. An installation hole 2114 is formed on the installation surface 2113, and the installation hole 2114 communicates with the first locking hole 2112; as Figure 16 shown, the osteotomy block 30 has an installation portion 31. The installation portion 31 is used to be inserted into the installation hole 2114 and is detachably connected to the slider 211 through the second locking member 25.

[0171] That is, the second locking member 25 is inserted into the slider 211 through the first locking hole 2112, and the installation portion 31 of the osteotomy block 30 is inserted into the slider 211 through the installation hole 2114 and inserted into the first locking hole 2112 of the slider 211, so that the installation portion 31 of the osteotomy block 30 is detachably connected to the second locking member 25 in the first locking hole 2112, so as to realize the detachable connection between the osteotomy block 30 and the osteotomy thickness adjuster 20. The settings of the installation portion 31 and the installation hole 2114 can not only realize the connection between the osteotomy block 30 and the osteotomy thickness adjuster 20, but also realize the positioning between the osteotomy block 30 and the osteotomy thickness adjuster 20.

[0172] In some embodiments, such as Figure 15 and Figure 16 As shown, a second locking hole 251 is formed in the second locking member 25 at a position corresponding to the installation hole 2114, and the installation portion 31 is used to be inserted into the installation hole 2114 and the second locking hole 251; a second limiting portion 252 is convexly provided on one of the inner surface of the second locking hole 251 and the outer surface of the installation portion 31, and a second limiting groove 311 is provided at a position corresponding to the second limiting portion 252. When the second locking member 25 is in the second locking position, the second limiting portion 252 is engaged with the second limiting groove 311 to lock the slider 211 and the osteotomy block 30. When the second locking member 25 is in the second unlocking position, the second limiting portion 252 is separated from the second limiting groove 311 to release the locking of the slider 211 and the osteotomy block 30.

[0173] That is, when the osteotomy block 30 is installed, the second locking member 25 is inserted into the first locking hole 2112, the installation portion 31 of the osteotomy block 30 is inserted into the slider 211 through the installation hole 2114 and inserted into the second locking hole 251 of the second locking member 25. The second locking member 25 is used to receive a driving force to insert the second limiting portion 252 into the second limiting groove 311 or remove the second limiting portion 252 from the second limiting groove 311, so as to realize the assembly and disassembly of the osteotomy block 30 and the osteotomy thickness adjuster 20.

[0174] In other embodiments, such as Figures 19 to 21 As shown, the second locking member 25 is rotatably connected to the slider 211 to enable the second locking member 25 to rotate between the second locking position and the second unlocking position. A second card slot 35 is formed on the outer surface of the osteotomy block 30. When the second locking member 25 is in the second locking position, the second locking member 25 is engaged with the second card slot 35 to lock the slider 211 and the osteotomy block 30; when the second locking member 25 is in the second unlocking position, the second locking member 25 is separated from the second card slot 35 to release the locking of the slider 211 and the osteotomy block 30.

[0175] Among them, the second locking member 25 is formed with a second engaging portion 253 at a position corresponding to the second card slot 35, so that the second locking member 25 forms a hook-like structure at the engaging position. The second locking member 25 is used to receive a driving force to rotate between a second locking position and a second unlocking position. When the second locking member 25 is located at the second locking position, the second engaging portion 253 is hooked into the second card slot 35, so that the second locking member 25 is engaged with the second card slot 35, so that the slider 211 and the osteotomy block 30 are kept relatively fixed, ensuring the synchronous adjustment of the osteotomy block 30 and the slider 211; when the second locking member 25 is located at the second unlocking position, the second engaging portion 253 disengages from the second card slot 35, so that the second locking member 25 is separated from the second card slot 35, so that the slider 211 and the osteotomy block 30 can be disassembled.

[0176] Optionally, as Figure 19 shown, the osteotomy thickness adjuster 20 further includes a sixth elastic member 26. The sixth elastic member 26 is connected between the second locking member 25 and the slider 211. The sixth elastic member 26 is used to drive the second locking member 25 to move from the second unlocking position to the second locking position. That is, the second locking member 25 is elastically connected to the slider 211 through the sixth elastic member 26. When the second locking member 25 is moved from the second locking position to the second unlocking position, the operator only needs to press or lift the second locking member 25 against the acting force of the sixth elastic member 26, so that the second locking member 25 is in a state of being separated from the osteotomy block 30, or in a state where the osteotomy block 30 can be installed; after the installation or disassembly is completed, the operator only needs to release the second locking member 25, and the second locking member 25 can automatically move from the second unlocking position to the second locking position under the action of the sixth elastic member 26 to lock the osteotomy block 30 or return to the initial state. That is to say, the setting of the sixth elastic member 26 helps to simplify the installation and disassembly process of the osteotomy thickness adjuster 20 and the osteotomy block 30.

[0177] The embodiment of the present application also provides an osteotomy block 30, as Figure 16 shown, the osteotomy block 30 includes an assembly surface 34 for assembling with the osteotomy thickness adjuster 20. The osteotomy thickness adjuster 20 includes a second locking member 25. The assembly surface 34 is convexly provided with a mounting portion 31. The mounting portion 31 includes a side surface extending in a direction away from the assembly surface 34. One of the side surface of the mounting portion 31 and the second locking member 25 is convexly provided with a second limiting portion 252, and the other is provided with a second limiting groove 311 at a position corresponding to the second limiting portion 252; a mounting hole 2114 is provided at a position corresponding to the mounting portion 31 on the osteotomy thickness adjuster 20. The mounting portion 31 is used to be inserted into the mounting hole 2114, and the detachable connection between the osteotomy block 30 and the osteotomy thickness adjuster 20 is realized through the engagement or separation of the second limiting portion 252 and the second limiting groove 311.

[0178] That is, when assembling the osteotomy block 30 and the osteotomy thickness adjuster 20, the mounting portion 31 on the osteotomy block 30 is directly inserted into the corresponding mounting hole 2114 on the osteotomy thickness adjuster 20, and then the mutual cooperation between the second limiting portion 252 and the second limiting groove 311 is used to realize the clamping and separation of the mounting portion 31 and the second locking member 25, so as to realize the quick assembly and disassembly of the osteotomy block 30. The mounting portion 31 on the osteotomy block 30 can be used to determine the mounting position of the osteotomy block 30 and the osteotomy thickness adjuster 20, and can also be directly locked and connected with the second locking member 25 in the osteotomy thickness adjuster 20, so that the structure of the osteotomy block 30 and the osteotomy thickness adjuster 20 connected therewith is more compact.

[0179] The embodiment of the present application also provides an osteotomy block 30, as Figure 21 shown, the osteotomy block 30 includes a connecting surface 32 and an osteotomy surface 33 which are oppositely arranged, and an assembling surface 34 connected between the connecting surface 32 and the osteotomy surface 33. The connecting surface 32 is used for connecting with the femur, that is, the connecting surface 32 is used for contacting the upper surface of the femur. A nail hole is provided on the osteotomy block 30, and the nail hole penetrates from the osteotomy surface 33 to the connecting surface 32. After adjusting the placement position of the osteotomy block 30, the locking nail is passed through the nail hole and nailed into the femur to realize the connection between the osteotomy block 30 and the femur. The assembling surface 34 is used for assembling with the osteotomy thickness adjuster 20, and the osteotomy thickness adjuster 20 includes a second locking member 25.

[0180] Wherein, a second card slot 35 is formed on the assembling surface 34, and the second card slot 35 extends between the connecting surface 32 and the osteotomy surface 33 and penetrates the osteotomy surface 33, that is, the second card slot 35 communicates with the assembling surface 34 and the osteotomy surface 33, and its cross section is in a shape similar to an L. The second locking member 25 includes a second clamping portion 253, and the second card slot 35 is used for clamping or separating from the second clamping portion 253 to realize the detachable connection between the osteotomy block 30 and the osteotomy thickness adjuster 20.

[0181] That is, when assembling the osteotomy block 30 and the osteotomy thickness adjuster 20, the assembly surface 34 of the osteotomy block 30 is fitted to the osteotomy thickness adjuster 20. By pressing the second locking member 25, the second engaging portion 253 of the second locking member 25 is inserted into the second card slot 35 from the assembly surface 34. Then, the second locking member 25 is released, so that the second engaging portion 253 at least partially extends into the portion of the second card slot 35 corresponding to the osteotomy surface 33, thereby engaging the second engaging portion 253 with the osteotomy block 30 to achieve the assembly of the osteotomy block 30 and the osteotomy thickness adjuster 20. When disassembling, only need to press the second locking member 25 to retract the second engaging portion 253 from the portion of the second card slot 35 corresponding to the osteotomy surface 33, and then remove it from the assembly surface 34. This structural design enables the connection and positioning of the osteotomy block 30 and the osteotomy thickness adjuster 20 to be achieved with only one connected second card slot 35, which helps to simplify the structural design of the osteotomy block 30 and the osteotomy thickness adjuster 20 that cooperates with it.

[0182] In some embodiments, as Figure 16 shown, a positioning portion 36 also protrudes from the assembly surface 34, and a positioning hole 2115 is provided at a position corresponding to the positioning portion 36 on the osteotomy thickness adjuster 20. The positioning portion 36 is used to be inserted into the positioning hole 2115. During actual use, in addition to avoiding the separation of the osteotomy block 30 and the osteotomy thickness adjuster 20, due to the complexity of the use scenario, the osteotomy block 30 may also undergo relative torsion relative to the osteotomy thickness adjuster 20, so that the osteotomy block 30 and the osteotomy thickness locator are not in the same plane, resulting in certain deviations in both the osteotomy thickness and the osteotomy valgus angle, thereby affecting the surgical results of knee joint replacement surgery. By protruding the positioning portion 36 on the assembly surface 34 and enabling the positioning portion 36 to cooperate with the installation portion 31 or the second card slot 35 of the osteotomy thickness adjuster 20 at the same time, there can be at least two acting points between the osteotomy block 30 and the osteotomy thickness adjuster 20, thereby effectively reducing the risk of relative torsion of the osteotomy block 30 relative to the osteotomy thickness adjuster 20.

[0183] Among them, two positioning portions 36 protrude from the assembly surface 34, and the two positioning portions 36 are distributed on opposite sides of the installation portion 31 on the installation surface 2113, or distributed on opposite sides of the second card slot 35 on the installation surface 2113. Two positioning holes 2115 are provided at positions corresponding to the two positioning portions 36 on the osteotomy thickness adjuster 20, and the two positioning portions 36 are respectively inserted into the corresponding positioning holes 2115. By symmetrically distributing the two positioning portions 36 on the osteotomy block 30, the relative torsion of the osteotomy block 30 relative to the osteotomy thickness adjuster 20 can be further avoided, thereby improving the assembly stability of the osteotomy block 30 and the osteotomy thickness adjuster 20.

[0184] The above has introduced in detail a femoral osteotomy positioning tool, an osteotomy angle adjuster, an osteotomy thickness adjuster, and an osteotomy block provided by the embodiments of the present application. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A femoral osteotomy positioning tool, It is characterized in that The invention comprises an osteotomy angle adjuster and an osteotomy thickness adjuster which are movably connected, wherein the osteotomy angle adjuster and the osteotomy thickness adjuster are distributed along a first direction, and the osteotomy thickness adjuster is used to be connected to an osteotomy block; the osteotomy thickness adjuster is used to drive the osteotomy block to reciprocate in a direction close to or away from the osteotomy angle adjuster to adjust the osteotomy thickness of the femur; the osteotomy angle adjuster is used to drive the osteotomy thickness adjuster to rotate, and drive the osteotomy block to rotate, so as to adjust the valgus angle of the femoral osteotomy; Wherein, the osteotomy angle adjuster includes a first adjustment mechanism, an abutment and a first locking member, the first adjustment mechanism includes a fixing assembly and a first adjustment assembly, the abutment is connected to the osteotomy thickness adjuster, the abutment includes an abutment surface for abutting against the distal end of the femur; the fixing assembly extends along a second direction, the second direction is substantially perpendicular to the first direction, and one end of the fixing assembly is rotatably connected to the abutment; the first adjustment assembly is movably connected to the fixing assembly, and the first adjustment assembly abuts against a side of the abutment facing away from the abutment surface, the first adjustment assembly is used to drive the abutment to rotate around a first rotation axis to adjust the femoral osteotomy valgus angle, the femoral osteotomy valgus angle being the angle between the abutment surface and a plane perpendicular to the second direction, and the extension direction of the first rotation axis is substantially consistent with the first direction; The first locking member is movably connected to the first adjusting component, so that the first locking member can move between a first locking position and a first unlocking position; when the first locking member is located at the first locking position, the first locking member is connected to the fixing component to lock the first adjusting component to the fixing component, thereby preventing the first adjusting component from being separated from the abutting member; when the first locking member is located at the first unlocking position, the first locking member is separated from the fixing component to release the lock between the first adjusting component and the fixing component, thereby allowing the first adjusting component to be separated from the abutting member; The osteotomy thickness adjuster includes a second adjustment mechanism and a base, the base is connected to the abutment, the second adjustment mechanism is used to connect to the osteotomy block, and the second adjustment mechanism is movably connected to the base to drive the osteotomy block to reciprocate in a direction close to or away from the osteotomy angle adjuster.

2. A femoral osteotomy positioning tool, It is characterized in that The invention comprises an osteotomy angle adjuster and an osteotomy thickness adjuster which are movably connected, wherein the osteotomy angle adjuster and the osteotomy thickness adjuster are distributed along a first direction, and the osteotomy thickness adjuster is used to be connected to an osteotomy block; the osteotomy thickness adjuster is used to drive the osteotomy block to reciprocate in a direction close to or away from the osteotomy angle adjuster to adjust the osteotomy thickness of the femur; the osteotomy angle adjuster is used to drive the osteotomy thickness adjuster to rotate, and drive the osteotomy block to rotate, so as to adjust the valgus angle of the femoral osteotomy; Wherein, the osteotomy angle adjuster includes a first adjustment mechanism and an abutment member distributed along a second direction, the second direction is substantially perpendicular to the first direction; the abutment member is connected to the osteotomy thickness adjuster, the abutment member includes an abutment surface for abutting against the distal end of the femur, the first adjustment mechanism is rotatably connected to the abutment member, the first adjustment mechanism is used to drive the abutment member to rotate around a first rotation axis to adjust the femoral osteotomy valgus angle, the femoral osteotomy valgus angle is the angle between the abutment surface and a plane perpendicular to the second direction, and the extension direction of the first rotation axis is substantially consistent with the first direction; The osteotomy thickness adjuster includes a slider, a second adjusting component and a base, the base is connected to the abutment, the slider is used to be connected to the osteotomy block, the slider is slidably connected to the base, the second adjusting component is movably connected to the slider, and the second adjusting component can rotate around a second rotation axis relative to the slider, and the extension direction of the second rotation axis is roughly consistent with the first direction; a rotation groove is provided on the base, and an eccentric wheel is formed on the second adjusting component at a position corresponding to the rotation groove, the eccentric wheel is eccentrically arranged relative to the second rotation axis, and the eccentric wheel is used to be inserted into the rotation groove, and the second adjusting component is used to drive the eccentric wheel to rotate in the rotation groove, so that the slider slides reciprocatingly in a direction approaching or away from the osteotomy angle adjuster, thereby driving the osteotomy block to reciprocate in a direction approaching or away from the osteotomy angle adjuster.

3. The femoral osteotomy positioning tool according to claim 1 or 2, It is characterized in that The fixing assembly comprises a main shaft and a fixing seat connected to each other, the main shaft extends along the second direction, and the fixing seat is sleeved on the main shaft; The first adjustment assembly includes a rotating seat and a plurality of positioning posts, the rotating seat is sleeved on the main shaft, the rotating seat is movably connected to the fixed seat, the positioning posts extend along the second direction, the plurality of positioning posts are distributed along the circumference of the main shaft, and the positioning posts are slidably connected to the fixed seat; One end of the positioning column is used to abut against the side of the abutment member facing away from the abutment surface, and the other end of the positioning column is used to abut against the rotating seat, and the rotating seat is used to rotate around the main axis to drive at least one of the positioning columns to slide along the second direction and push the abutment member to rotate around the first rotation axis, so that the abutment member pushes at least another of the positioning columns to slide in the direction opposite to the sliding direction of at least one of the positioning columns.

4. The femoral osteotomy positioning tool according to claim 3, It is characterized in that The first locking member is movably connected to the rotating seat; When the first locking member is located at the first locking position, the first locking member is engaged with the main shaft to lock the rotating seat to the main shaft, thereby preventing the rotating seat from sliding relative to the main shaft, thereby preventing the positioning column from being separated from the abutment member; When the first locking member is located at the first unlocking position, the first locking member is separated from the main shaft to release the locking of the rotating seat and the main shaft, so that the rotating seat can slide relative to the main shaft to disengage the positioning post from the abutting member.

5. The femoral osteotomy positioning tool according to claim 4, wherein, a first limiting groove is formed on the outer surface of the main shaft or one of the first locking members, and a first limiting portion is formed at a position corresponding to the first limiting groove on the other; when the first locking member is located at the first locking position, the first limiting portion is engaged with the first limiting groove to engage the first locking member with the main shaft; when the first locking member is located at the first unlocking position, the first limiting portion is separated from the first limiting groove to separate the first locking member from the main shaft.

6. The femoral osteotomy positioning tool according to claim 4, wherein, the first locking member includes a locking portion and a pressing portion connected to each other. The locking portion is movably connected to the rotating seat. The locking portion is annular and sleeved on the main shaft. The pressing portion partially protrudes from the outer surface of the rotating seat, and the pressing portion is used to drive the locking portion to move between the first locking position and the first unlocking position.

7. The femoral osteotomy positioning tool according to claim 3, wherein, the first locking member is movably connected to the rotating seat; when the first locking member is located at the first locking position, the first locking member is engaged with the fixed seat to lock the rotating seat to the fixed seat, preventing the rotating seat from sliding relative to the main shaft, thereby preventing the positioning post from disengaging from the abutting member; when the first locking member is located at the first unlocking position, the first locking member is separated from the fixed seat to release the locking of the rotating seat and the fixed seat, so that the rotating seat can slide relative to the main shaft to disengage the positioning post from the abutting member.

8. The femoral osteotomy positioning tool according to claim 7, wherein, the first locking member is rotatably connected to the rotating seat so that the first locking member rotates between the first locking position and the first unlocking position. A first card slot is formed on the outer surface of the fixed seat; when the first locking member is located at the first locking position, the first locking member is engaged with the first card slot to lock the rotating seat to the fixed seat; when the first locking member is located at the first unlocking position, the first locking member is separated from the first card slot to release the locking between the rotating seat and the fixed seat.

9. The femoral osteotomy positioning tool according to any one of claims 4 to 8, wherein, the osteotomy angle adjuster further includes a first elastic member connected between the first locking member and the rotating seat, and the first elastic member is used to drive the first locking member to move from the first unlocking position to the first locking position.

10. The femoral osteotomy positioning tool according to any one of claims 4 to 8, wherein, The osteotomy angle adjuster further includes a second elastic member, which is connected between the main shaft and the rotating seat, and is used to drive the rotating seat to slide until it abuts against the positioning post.

11. The femoral osteotomy positioning tool according to claim 3, wherein, the osteotomy angle adjuster further includes a first positioning assembly, which is connected between the fixed seat and the rotating seat, and the first positioning assembly includes a first positioning member and a third elastic member; One of the side of the rotating seat facing the fixed seat and the side of the fixed seat facing the rotating seat is provided with a plurality of first positioning grooves, the other is connected to one end of the third elastic member, the other end of the third elastic member is connected to the first positioning member, and the plurality of first positioning grooves are arranged at intervals along the circumference of the main shaft; The third elastic member is used to drive the first positioning member to be engaged with one of the first positioning grooves.

12. The femoral osteotomy positioning tool according to claim 1 or 2, wherein, a first through hole is formed in the slider, the first through hole extends along the first direction, and the second adjustment assembly includes: a driving shaft located in the first through hole, the driving shaft is movably connected to the slider, the driving shaft can rotate relative to the slider around the second rotation axis, and an eccentric wheel is formed on one side of the driving shaft; the driving shaft is used to drive the eccentric wheel to rotate in the rotation groove, so that the slider reciprocally slides in a direction close to or away from the osteotomy angle adjuster.

13. The femoral osteotomy positioning tool according to claim 12, wherein, one of the outer surface of the driving shaft and the inner wall of the first through hole is convexly provided with engaging teeth, and the other is provided with a plurality of tooth grooves at positions corresponding to the engaging teeth, the plurality of tooth grooves are arranged along the circumference of the first through hole or the driving shaft, the engaging teeth are used to be engaged with one of the tooth grooves, and the driving shaft can reciprocally move relative to the slider along the first direction, so that the engaging teeth can be engaged with or separated from the tooth grooves.

14. The femoral osteotomy positioning tool according to claim 13, wherein, the second adjustment assembly further includes a rotating turntable, the rotating turntable is located in the first through hole, the rotating turntable is connected between the driving shaft and the eccentric wheel, the driving shaft is used to drive the rotating turntable to rotate around the second rotation axis, and the rotating turntable drives the eccentric wheel to rotate in the rotation groove, so that the slider reciprocally slides in a direction close to or away from the osteotomy angle adjuster; the osteotomy thickness adjuster further includes a fourth elastic member, the fourth elastic member is connected between the driving shaft and the rotating turntable, and the fourth elastic member is used to drive the driving shaft to move along the first direction, so that the engaging teeth are engaged with one of the tooth grooves.

15. The femoral osteotomy positioning tool according to claim 12, wherein, The osteotomy thickness regulator further includes a second positioning assembly, which is located in the first through hole and connected between the slider and the drive shaft. The second positioning assembly includes a second positioning member and a fifth elastic member; One of the outer surface of the drive shaft and the inner wall of the first through hole is provided with a plurality of second positioning grooves, and the other is connected to one end of the fifth elastic member. The other end of the fifth elastic member is connected to the second positioning member. The plurality of second positioning grooves are arranged at intervals along the circumferential direction of the first through hole or the drive shaft; the fifth elastic member is used to drive the second positioning member to be clamped with one of the second positioning grooves.

16. The femoral osteotomy positioning tool according to claim 12, wherein, the osteotomy thickness regulator further includes a second locking member, which is movably connected to the slider so that the second locking member can move between a second locking position and a second unlocking position; When the second locking member is located at the second locking position, the second locking member is used to lock the slider and the osteotomy block; When the second locking member is located at the second unlocking position, the second locking member is used to release the lock between the slider and the osteotomy block, so that the osteotomy block and the slider are detachable.

17. The femoral osteotomy positioning tool according to claim 16, wherein, a first locking hole is formed in the slider for the second locking member to be inserted; the slider includes a mounting surface for mounting the osteotomy block, and a mounting hole is formed in the mounting surface, and the mounting hole communicates with the first locking hole; the osteotomy block has a mounting portion for inserting into the mounting hole and being detachably connected to the slider through the second locking member.

18. The femoral osteotomy positioning tool according to claim 17, wherein, a second locking hole is formed in the second locking member corresponding to the mounting hole, and the mounting portion is for inserting into the mounting hole and the second locking hole; One of the inner surface of the second locking hole and the outer surface of the mounting portion is convexly provided with a second limiting portion, and the other is provided with a second limiting groove corresponding to the position of the second limiting portion; When the second locking member is located at the second locking position, the second limiting portion is clamped with the second limiting groove to lock the slider and the osteotomy block; when the second locking member is located at the second unlocking position, the second limiting portion is separated from the second limiting groove to release the lock between the slider and the osteotomy block.

19. The femoral osteotomy positioning tool according to claim 16, wherein, the second locking member is rotatably connected to the slider so that the second locking member rotates between the second locking position and the second unlocking position, and a second card slot is formed in the outer surface of the osteotomy block; When the second locking piece is located at the second locking position, the second locking piece is engaged with the second slot to lock the slider and the osteotomy block; when the second locking piece is located at the second unlocking position, the second locking piece is separated from the second slot to unlock the slider and the osteotomy block.

20. The femoral osteotomy positioning tool according to any one of claims 16 to 19, It is characterized in that The osteotomy thickness adjuster further includes a sixth elastic member, which is connected between the second locking member and the slider, and is used to drive the second locking member to move from the second unlocking position to the second locking position.

21. The femoral osteotomy positioning tool according to claim 1 or 2, It is characterized in that The femoral osteotomy positioning tool further comprises an intramedullary rod, which is movably connected with the first adjustment mechanism and the abutment member along the second direction, and is used for inserting into the femur.

22. An osteotomy angle adjuster, It is characterized in that include: an abutment member, comprising an abutment surface for abutting against the distal end of the femur; A fixing assembly extending along the second direction, one end of the fixing assembly being rotatably connected to the abutment member; a first adjusting component, movably connected to the fixing component, the first adjusting component abutting against a side of the abutting member away from the abutting surface, the first adjusting component being used to drive the abutting member to rotate around a first rotation axis to adjust a femoral osteotomy valgus angle, the femoral osteotomy valgus angle being an angle between the abutting surface and a plane perpendicular to the second direction; an extension direction of the first rotation axis being substantially perpendicular to the second direction; A first locking member is movably connected to the first adjusting component so that the first locking member can move between a first locking position and a first unlocking position; when the first locking member is located at the first locking position, the first locking member is connected to the fixing component to lock the first adjusting component to the fixing component, thereby preventing the first adjusting component from being disengaged from the abutment member; when the first locking member is located at the first unlocking position, the first locking member is separated from the fixing component to release the lock between the first adjusting component and the fixing component, thereby allowing the first adjusting component to be disengaged from the abutment member.

23. The osteotomy angle adjuster according to claim 22, It is characterized in that The fixing assembly comprises a main shaft and a fixing seat connected to each other, the main shaft extends along the second direction, and the fixing seat is sleeved on the main shaft; The first adjustment assembly includes a rotating seat and a plurality of positioning posts, the rotating seat is sleeved on the main shaft, the rotating seat is movably connected to the fixed seat, the positioning posts extend along the second direction, the plurality of positioning posts are distributed along the circumference of the main shaft, and the positioning posts are slidably connected to the fixed seat; One end of the positioning post is used to abut against one side of the abutting member away from the abutting surface, the other end of the positioning post is used to abut against the rotating seat, and the rotating seat is used to rotate around the main shaft to drive at least one of the positioning posts to slide along the second direction and push the abutting member to rotate around the first rotation axis, so that the abutting member pushes at least another one of the positioning posts to slide in a direction opposite to the sliding direction of at least one of the positioning posts.

24. The osteotomy angle regulator according to claim 23, wherein, the first locking member is movably connected to the rotating seat; when the first locking member is in the first locking position, the first locking member is clamped with the main shaft or the fixed seat to lock the rotating seat to the main shaft or the fixed seat, preventing the rotating seat from sliding relative to the main shaft, thereby preventing the positioning post from disengaging from the abutting member; when the first locking member is in the first unlocking position, the first locking member is separated from the main shaft or the fixed seat to release the locking of the rotating seat to the main shaft or the fixed seat, enabling the rotating seat to slide relative to the main shaft to disengage the positioning post from the abutting member.

25. The osteotomy angle regulator according to claim 23 or 24, wherein, the osteotomy angle regulator further includes a first elastic member, the first elastic member is connected between the first locking member and the rotating seat, and the first elastic member is used to drive the first locking member to move from the first unlocking position to the first locking position.

26. An osteotomy thickness regulator, wherein, it includes: a base, on which a rotating groove is provided; a slider, used to connect with the osteotomy block, and the slider is slidably connected to the base; a second adjusting assembly, movably connected to the slider, the second adjusting assembly can rotate relative to the slider around a second rotation axis, and the second rotation axis extends along a first direction; an eccentric wheel is formed at a position of the second adjusting assembly corresponding to the rotating groove, the eccentric wheel is eccentrically arranged relative to the second rotation axis, the eccentric wheel is used to be inserted into the rotating groove, and the second adjusting assembly is used to drive the eccentric wheel to rotate in the rotating groove, so that the slider reciprocally slides in a direction substantially perpendicular to the first direction, thereby driving the osteotomy block to reciprocally move in a direction substantially perpendicular to the first direction.

27. The osteotomy thickness regulator according to claim 26, wherein, a first through hole is provided on the slider, and the first through hole extends along the first direction, and the second adjusting assembly includes: a driving shaft, located in the first through hole, the driving shaft is movably connected to the slider, the driving shaft can rotate relative to the slider around the second rotation axis, and an eccentric wheel is formed on one side of the driving shaft; the driving shaft is used to drive the eccentric wheel to rotate in the rotating groove, so that the slider reciprocally slides in a direction substantially perpendicular to the first direction.

28. The osteotomy thickness regulator according to claim 26, wherein, The osteotomy thickness adjuster further includes a second locking member, which is movably connected to the slider so that the second locking member can move between a second locked position and a second unlocked position; When the second locking member is located at the second locked position, the second locking member is used to lock the slider and the osteotomy block; When the second locking member is located at the second unlocked position, the second locking member is used to release the lock between the slider and the osteotomy block, so that the osteotomy block and the slider are detachable.

29. The osteotomy thickness adjuster according to claim 28, wherein, the osteotomy thickness adjuster further includes a sixth elastic member, which is connected between the second locking member and the slider, and the sixth elastic member is used to drive the second locking member to move from the second unlocked position to the second locked position.

30. An osteotomy block, wherein, the osteotomy block includes an assembly surface for assembling with an osteotomy thickness adjuster, and the osteotomy thickness adjuster includes a second locking member; The assembly surface is convexly provided with a mounting portion, the mounting portion includes a side surface extending in a direction away from the assembly surface, one of the side surface of the mounting portion and the second locking member is convexly provided with a second limiting portion, and the other is provided with a second limiting groove at a position corresponding to the second limiting portion; a mounting hole is provided at a position corresponding to the mounting portion on the osteotomy thickness adjuster, and the mounting portion is used to be inserted into the mounting hole, and the detachable connection between the osteotomy block and the osteotomy thickness adjuster is realized through the clamping or separation of the second limiting portion and the second limiting groove.

31. An osteotomy block, wherein, the osteotomy block includes a connecting surface and an osteotomy surface arranged oppositely, and an assembly surface connected between the connecting surface and the osteotomy surface, the connecting surface is used to be connected with the femur, the assembly surface is used to be assembled with an osteotomy thickness adjuster, and the osteotomy thickness adjuster includes a second locking member; A second clamping groove is provided on the assembly surface, and the second clamping groove extends between the connecting surface and the osteotomy surface and penetrates through to the osteotomy surface, and the second clamping groove is used to be clamped or separated from the second locking member to realize the detachable connection between the osteotomy block and the osteotomy thickness adjuster.

32. The osteotomy block according to claim 30 or 31, wherein, a positioning portion is further convexly provided on the assembly surface, and a positioning hole is provided at a position corresponding to the positioning portion on the osteotomy thickness adjuster, and the positioning portion is used to be inserted into the positioning hole.

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