Osteotomy guide device

Abstract

The present invention provides an osteotomy guide device, comprising: a base connected to a bone structure; a first end of a first guide plate connected to the base, a first osteotomy groove being provided on the first guide plate; a first end of a second guide plate being arranged adjacent to the first end of the first guide plate, a second end of the second guide plate being hingedly connected to the second end of the first guide plate, a second osteotomy groove being provided on the second guide plate, and an angle between the second guide plate and the first guide plate being adjustable; an angle adjustment structure being arranged between the first guide plate and the second guide plate, the angle adjustment structure being capable of adjusting the angle between the first guide plate and the second guide plate; a first positioning column being detachably connected to the first guide plate, a second positioning column being detachably connected to the second guide plate, and when the second positioning column is mounted on the second guide plate, one end of the second positioning column protrudes downward from the second guide plate. The technical solution of the present application effectively solves the problem that the osteotomy guide plate in the related art cannot meet individual differences and thus affects the effect of prosthesis implantation.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an osteotomy guide plate device. Background Art

[0002] The knee joint consists of three compartments: the medial tibial compartment, the lateral tibial compartment, and the patellofemoral compartment. For knee joint diseases, they are often divided into unicompartmental replacement, bicompartmental replacement, and total knee replacement according to different pathological conditions. The patellofemoral compartment, as the middle compartment of the knee joint, can be replaced by a single compartment or combined with the medial condylar compartment to form a bicompartmental replacement. However, due to the specificity of the plasticity of the femoral side of the patellofemoral replacement, there have always been two major problems that need to be solved: how to achieve the shaping of the cross-cutting surface (a. Osteotomy with an oscillating saw will form an overall plane and destroy other compartments; b. Guide sleeve guided grinding cannot guarantee accurate contours); how to ensure that the original femoral trochlea is perfectly restored after the prosthesis is installed, that is, the transition is smooth with other cartilages (the prosthesis is of special design, and the edge is prone to protrusion after installation, which brings complications such as abnormal patellar trajectory).

[0003] In the related art, due to individual differences, the contour shape of each person's femoral side will be different. However, since the osteotomy guide used in the prior art is a fixed structure, it cannot meet individual differences, which in turn affects the effect of the prosthesis after implantation. Summary of the invention

[0004] The main purpose of the present invention is to provide an osteotomy guide device to solve the problem that the osteotomy guide in the related art cannot meet individual differences and thus affects the effect of prosthesis implantation.

[0005] In order to achieve the above-mentioned objectives, the present invention provides a osteotomy guide device, comprising: a base, connected to a bone structure; a first guide plate, a first end of the first guide plate is connected to the base, and a first osteotomy groove is arranged on the first guide plate; a second guide plate, a first end of the second guide plate is arranged adjacent to the first end of the first guide plate, and the second end of the second guide plate is hingedly connected to the second end of the first guide plate, a second osteotomy groove is arranged on the second guide plate, and an angle between the second guide plate and the first guide plate is adjustable; an angle adjustment structure is arranged between the first guide plate and the second guide plate, and the angle adjustment structure can adjust the angle between the first guide plate and the second guide plate; a first positioning column, detachably connected to the first guide plate, when the first positioning column is installed on the first guide plate, one end of the first positioning column protrudes downward from the first guide plate; a second positioning column, detachably connected to the second guide plate, when the second positioning column is installed on the second guide plate, one end of the second positioning column protrudes downward from the second guide plate.

[0006] Further, the angle adjustment structure is disposed between the second end of the first guide plate and the second end of the second guide plate.

[0007] Furthermore, the angle adjustment structure includes a connecting rod, a first end of the connecting rod is connected to the first end of the first guide plate, a plurality of adjustment holes are arranged at intervals on the side wall of the second end of the second guide plate, and the second end of the connecting rod can be selectively inserted into one of the plurality of adjustment holes, wherein the angle between the second guide plate and the first guide plate is different when the second end of the connecting rod is located in different adjustment holes.

[0008] Furthermore, the angle adjustment structure also includes a rotating column, a connecting hole is provided on the side wall of the first guide plate, the rotating column is rotatably disposed in the connecting hole, and the first end of the connecting rod is connected to the rotating column.

[0009] Furthermore, the angle adjustment structure also includes a first limit groove, a second limit groove, a stop column and a first elastic member. The first limit groove is arranged on the surface of the first guide plate and is connected to the connecting hole. The second limit groove is arranged on the surface of the second guide plate and is connected to multiple adjustment holes. The first elastic member is arranged in the connecting hole and abuts against the rotating column. The stop column is vertically arranged on the rotating column and inserted into the first limit groove. The second end of the connecting rod is provided with a stop protrusion, which can be inserted into the second limit groove.

[0010] Furthermore, a connecting tube is provided at one end of the first guide plate away from the base body, the first positioning column is inserted into the connecting tube, an elastic top bead is provided on the first positioning column, a limiting hole is provided on the side wall of the connecting tube, and the elastic top bead can be inserted into the limiting hole.

[0011] Furthermore, a guiding slope is provided on the inner wall of the connecting tube, and the guiding slope is connected to the limiting hole. In the circumferential direction of the connecting tube, the distance between the guiding slope and the axis of the connecting tube gradually decreases from close to the limiting hole to far away from the limiting hole.

[0012] Furthermore, the osteotomy guide device also includes a second elastic member, the first positioning column includes a first column section, a second column section and an operating end, the second column section is located between the first column section and the operating end, the elastic top bead is arranged on the first column section, the second column section includes a main body and an external protrusion, the connecting tube includes a first hole section and a second hole section located above the first hole section, the diameter of the first hole section is smaller than the diameter of the second hole section so that a step surface is formed between the first hole section and the second hole section, an inner protrusion is arranged on the inner wall of the second hole section, the second elastic member is arranged in the second hole section and is located between the inner protrusion and the step surface, when the first positioning column is inserted into the connecting tube, the first column section is inserted into the first hole section, the second column section is inserted into the second hole section, and the external protrusion abuts and cooperates with the second elastic member.

[0013] Furthermore, the osteotomy guide plate device also includes a third elastic member, which extends along the circumference of the connecting tube and is arranged between the inner protrusion and the outer protrusion.

[0014] Furthermore, the first column section includes a column body and a connecting block, the column body is provided with a connecting groove, the connecting block is arranged in the connecting groove, a mounting recess is arranged on the top of the connecting block, and an elastic top bead is arranged in the mounting recess.

[0015] Further, a positioning structure is provided between the column portion and the connecting block, and / or a connecting pin is provided between the column portion and the connecting block.

[0016] Further, the first guide plate includes a first plate body portion and a second plate body portion, and a first angle is formed between the first plate body portion and the second plate body portion; the second guide plate includes a third plate body portion and a fourth plate body portion, and a second angle is formed between the third plate body portion and the fourth plate body portion, and the first angle and the second angle are the same; the first osteotomy groove is arranged on the first plate body portion, and a first opening portion connected to the first osteotomy groove is arranged on the second plate body portion; the second osteotomy groove is arranged on the third plate body portion, and a second opening portion connected to the second osteotomy groove is arranged on the fourth plate body portion.

[0017] By applying the technical solution of the present invention, the first guide plate is connected to the base, the base can be connected to the bone structure, and the second guide plate is hingedly connected to the first guide plate, so that the angle between the first guide plate and the second guide plate can be adjusted. The angle adjustment structure is arranged between the first guide plate and the second guide plate to adjust the angle between the first guide plate and the second guide plate. The first positioning column is detachably mounted on the first guide plate, and the second positioning column is detachably mounted on the second guide plate. Through the above-mentioned setting, firstly, a reference plane is cut on the femur, the base is fixed on the reference plane, and the angle between the first guide plate and the second guide plate is adjusted. When the first positioning column and the second positioning column are in contact with the femur, the positions of the first guide plate and the second guide plate are locked by the angle adjustment structure, and finally the osteotomy is achieved by the first osteotomy groove and the second osteotomy groove, so as to ensure that the prosthesis fully conforms to the original contour shape of the femur after implantation, so as to ensure the implantation effect of the prosthesis. Therefore, the technical solution of the present application effectively solves the problem that the osteotomy guide plate in the related art cannot meet individual differences and thus affects the implantation effect of the prosthesis. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of an osteotomy guide device according to the present invention is shown;

[0020] Figure 2 Shows Figure 1 AA sectional view of the osteotomy guide device;

[0021] Figure 3 Shows Figure 2 A partial enlarged view of the osteotomy guide device;

[0022] Figure 4 Shows Figure 1 A schematic cross-sectional view of the osteotomy guide device in the BB direction;

[0023] Figure 5 Shows Figure 1 A schematic diagram of the stereoscopic structure of the osteotomy guide device from another perspective;

[0024] Figure 6 Shows Figure 1 Schematic diagram of the exploded structure of the osteotomy guide device;

[0025] Figure 7 Shows Figure 1 A three-dimensional structural schematic diagram of a partial structure of an osteotomy guide device;

[0026] Figure 8 Shows Figure 7 A partial enlarged view of the osteotomy guide device;

[0027] Fig. 9 Shows Figure 7 A schematic side view of an osteotomy guide device;

[0028] Fig.10 Shows Fig. 9 A CC-direction cross-sectional schematic diagram of the osteotomy guide device;

[0029] Fig.11 Shows Fig. 9 A schematic cross-sectional view of the osteotomy guide device in the DD direction;

[0030] Fig.12 Shows Figure 1 A three-dimensional structural diagram of the angle adjustment structure of the osteotomy guide device;

[0031] Fig.13 Shows Figure 1 A schematic diagram of the exploded structure of the first positioning column of the osteotomy guide device;

[0032] Fig.14 Shows Figure 1 Schematic diagram of the three-dimensional structure of the osteotomy guide device installed on the femur.

[0033] The above drawings include the following reference numerals:

[0034] 10. base; 20. first guide plate; 21. first osteotomy groove; 22. connecting hole; 23. connecting tube; 231. limiting hole; 232. guiding inclined surface; 233. first hole section; 234. second hole section; 2341. inner convex block; 235. step surface; 24. first plate body; 25. second plate body; 251. first opening; 30. second guide plate; 31. second osteotomy groove; 32. adjusting hole; 33. third plate body; 34. fourth plate body; 341. second opening; 40. angle adjustment structure; 41. connecting Rod; 411, stop protrusion; 42, rotating column; 43, first limiting groove; 44, second limiting groove; 45, stop column; 46, first elastic member; 50, first positioning column; 51, elastic top bead; 52, first column section; 521, column body; 5211, connecting groove; 522, connecting block; 5221, mounting recess; 53, second column section; 531, main body; 532, external protrusion; 54, operating end; 60, second positioning column; 71, second elastic member; 72, third elastic member; 73, positioning structure; 74, connecting pin. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0037] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0038] like Figure 1 , Figures 5 to 7 as well as Fig.14 As shown, in this embodiment, the osteotomy guide device includes: a base 10, a first guide plate 20, a second guide plate 30, an angle adjustment structure 40, a first positioning column 50 and a second positioning column 60. The base 10 is connected to the bone structure. The first end of the first guide plate 20 is connected to the base 10, and the first guide plate 20 is provided with a first osteotomy groove 21. The first end of the second guide plate 30 is arranged adjacent to the first end of the first guide plate 20, the second end of the second guide plate 30 is hingedly connected to the second end of the first guide plate 20, the second guide plate 30 is provided with a second osteotomy groove 31, and the angle between the second guide plate 30 and the first guide plate 20 is adjustable. The angle adjustment structure 40 is arranged between the first guide plate 20 and the second guide plate 30, and the angle adjustment structure 40 can adjust the angle between the first guide plate 20 and the second guide plate 30. The first positioning column 50 is detachably connected to the first guide plate 20, and when the first positioning column 50 is installed on the first guide plate 20, one end of the first positioning column 50 protrudes downward from the first guide plate 20. The second positioning post 60 is detachably connected to the second guide plate 30 . When the second positioning post 60 is installed on the second guide plate 30 , one end of the second positioning post 60 protrudes downward from the second guide plate 30 .

[0039] By applying the technical solution of this embodiment, the first guide plate 20 is connected to the base 10, the base 10 can be connected to the bone structure, and the second guide plate 30 is hingedly connected to the first guide plate 20, so that the angle between the first guide plate 20 and the second guide plate 30 can be adjusted. The angle adjustment structure 40 is arranged between the first guide plate 20 and the second guide plate 30 to adjust the angle between the first guide plate 20 and the second guide plate 30. The first positioning column 50 is detachably mounted on the first guide plate 20, and the second positioning column 60 is detachably mounted on the second guide plate 30. Through the above-mentioned setting, firstly, a reference plane is cut on the femur, the base 10 is fixed on the reference plane, the angle between the first guide plate 20 and the second guide plate 30 is adjusted, and when the first positioning column 50 and the second positioning column 60 are in contact with the femur, the positions of the first guide plate 20 and the second guide plate 30 are locked by the angle adjustment structure 40, and finally the osteotomy is achieved by the first osteotomy groove 21 and the second osteotomy groove 31, thereby ensuring that the prosthesis fully conforms to the original contour shape of the femur after implantation, thereby ensuring the implantation effect of the prosthesis. Therefore, the technical solution of this embodiment effectively solves the problem that the osteotomy guide in the related art cannot meet individual differences and thus affects the implantation effect of the prosthesis.

[0040] like Figure 1 , Figures 5 to 7 as well as Figures 9 to 12 As shown, in this embodiment, the angle adjustment structure 40 is arranged between the second end of the first guide plate 20 and the second end of the second guide plate 30. The above arrangement can avoid the angle adjustment structure 40 from interfering with the first guide plate 20 or the second guide plate 30, thereby making the adjustment of the angle adjustment structure 40 easier.

[0041] like Figure 1 , Figures 5 to 7 as well as Figures 9 to 12 As shown, in this embodiment, the angle adjustment structure 40 includes a connecting rod 41, the first end of the connecting rod 41 is connected to the first end of the first guide plate 20, and a plurality of adjustment holes 32 are arranged at intervals on the side wall of the second end of the second guide plate 30. The second end of the connecting rod 41 can be selectively inserted into one of the plurality of adjustment holes 32, wherein the angle between the second guide plate 30 and the first guide plate 20 is different when the second end of the connecting rod 41 is located in different adjustment holes 32. The structure of the connecting rod 41 is simple and easy to set. When the second end of the connecting rod 41 is inserted into different adjustment holes 32, the angle between the first guide plate 20 and the second guide plate 30 can be changed, thereby making it more in line with the actual shape of the femur.

[0042] like Figure 1 , Figures 5 to 7 as well as Figures 9 to 12As shown, in this embodiment, the angle adjustment structure 40 further includes a rotating column 42. A connecting hole 22 is provided on the side wall of the first guide plate 20. The rotating column 42 is rotatably provided in the connecting hole 22. The first end of the connecting rod 41 is connected to the rotating column 42. The rotating column 42 can rotate in the connecting hole 22, thereby making the position stability of the rotating column 42 better. At the same time, when the rotating column 42 rotates, it can drive the connecting rod 41 to rotate, thereby making the rotation of the connecting rod 41 easier.

[0043] like Figure 1 , Figures 5 to 7 as well as Figures 9 to 12 As shown, in the present embodiment, the angle adjustment structure 40 further includes a first limiting groove 43, a second limiting groove 44, a stop column 45 and a first elastic member 46. The first limiting groove 43 is arranged on the surface of the first guide plate 20 and is connected to the connecting hole 22. The second limiting groove 44 is arranged on the surface of the second guide plate 30 and is connected to the plurality of adjustment holes 32. The first elastic member 46 is arranged in the connecting hole 22 and abuts against the rotating column 42. The stop column 45 is vertically arranged on the rotating column 42 and inserted into the first limiting groove 43. The second end of the connecting rod 41 is provided with a stop protrusion 411, which can be inserted into the second limiting groove 44. The connecting pin 74 is movably arranged on the rotating column 42 along the circumference of the rotating column, that is, an annular groove is arranged on the side wall of the rotating column 42, and the width of the notch of the annular groove is smaller than the width of the groove bottom of the annular groove. A guide block is arranged on the stop column 45, and the guide block includes a first part and a second part, and the width of the first part is greater than the width of the second part. The first part is located in the annular groove, and the second part passes through the notch of the annular groove, so that the stability of the stop column 45 can be ensured. The stop column 45 can move in the first limiting groove 43, and the first limiting groove 43 can prevent the rotating column 42 from escaping from the connecting hole 22. The stop protrusion 411 can cooperate with the second limiting groove 44 to prevent the connecting rod 41 from escaping from the adjusting hole 32.

[0044] Specifically, when the angle adjustment structure 40 is in use, the rotating column 42 is rotated to align the second end of the connecting rod 41 with the adjustment hole 32 to be adjusted, and the rotating column 42 is pressed so that the rotating column 42 squeezes the first elastic member 46. At this time, the second end of the connecting rod 41 extends into the adjustment hole 32. When the stop protrusion 411 is located in the second limiting groove 44, the rotating column 42 is released, and the first elastic member 46 pushes the rotating column 42. The stop protrusion 411 and the second limiting groove 44 are abutted under the action of the first elastic member 46, thereby making the position of the connecting rod 41 more stable and facilitating angle adjustment.

[0045] like Figures 1 to 11 as well as Fig.13As shown, in this embodiment, a connecting tube 23 is provided at one end of the first guide plate 20 away from the base 10, a first positioning column 50 is inserted into the connecting tube 23, an elastic top bead 51 is provided on the first positioning column 50, a limiting hole 231 is provided on the side wall of the connecting tube 23, and the elastic top bead 51 can be inserted into the limiting hole 231. The provision of the elastic top bead 51 enables the position of the first positioning column 50 to be stably provided in the connecting tube 23.

[0046] Specifically, a connecting tube is also provided on the second guide plate 30 , and the structure of the second positioning column 60 is the same as that of the first positioning column 50 .

[0047] like Figures 1 to 11 as well as Fig.13 As shown, in this embodiment, a guide slope 232 is provided on the inner wall of the connecting cylinder 23, and the guide slope 232 is connected to the limiting hole 231. In the circumferential direction of the connecting cylinder 23, the distance between the guide slope 232 and the axis of the connecting cylinder 23 gradually decreases from the direction close to the limiting hole 231 to the direction away from the limiting hole 231. The setting of the guide slope 232 makes it easier for the elastic top ball to be inserted into the limiting hole 231.

[0048] like Figures 1 to 11 as well as Fig.13 As shown, in this embodiment, the osteotomy guide device also includes a second elastic member 71, the first positioning column 50 includes a first column segment 52, a second column segment 53 and an operating end 54, the second column segment 53 is located between the first column segment 52 and the operating end 54, the elastic top bead 51 is arranged on the first column segment 52, the second column segment 53 includes a body portion 531 and an outer protrusion 532, the connecting tube 23 includes a first hole segment 233 and a second hole segment 234 located above the first hole segment 233, the diameter of the first hole segment 233 is smaller than the diameter of the second hole segment 234. The diameter of the section 234 is such that a step surface 235 is formed between the first hole section 233 and the second hole section 234. An inner convex block 2341 is provided on the inner wall of the second hole section 234. The second elastic member 71 is provided in the second hole section 234 and is located between the inner convex block 2341 and the step surface 235. When the first positioning column 50 is inserted into the connecting tube 23, the first column section 52 is inserted into the first hole section 233, the second column section 53 is inserted into the second hole section 234, and the outer convex block 532 abuts against the second elastic member 71. When the first positioning column 50 is inserted into the connecting tube 23, the second elastic member 71 is squeezed by the outer convex block 532. When the elastic top bead 51 is inserted into the limiting hole 231, the second elastic member 71 pushes the outer convex block 532, thereby making the position of the first positioning column 50 more stable.

[0049] like Figures 1 to 11 as well as Fig.13As shown, in this embodiment, the osteotomy guide plate device further includes a third elastic member 72, which extends along the circumferential direction of the connecting tube 23 and is disposed between the inner protrusion 2341 and the outer protrusion 532. The third elastic member 72 can push the outer protrusion 532 along the circumferential direction of the connecting tube 23, thereby squeezing the outer protrusion 532 and the inner protrusion 2341 together, which can further improve the position stability of the first positioning column 50.

[0050] like Figures 1 to 11 as well as Fig.13 As shown, in this embodiment, the first column section 52 includes a column portion 521 and a connecting block 522, a connecting groove 5211 is provided on the column portion 521, the connecting block 522 is arranged in the connecting groove 5211, a mounting recess 5221 is provided on the top of the connecting block 522, and the elastic top bead 51 is arranged in the mounting recess 5221. The above arrangement can make it easier to arrange the elastic top bead 51. Specifically, the elastic top bead 51 includes a first plug, a second plug, and a spring arranged between the first plug and the second plug. The elastic top bead 51 is located between the mounting recess 5221 and the connecting groove 5211, so that the elastic top bead 51 can be limited, and the position stability of the elastic top bead 51 can be ensured.

[0051] like Figures 1 to 11 as well as Fig.13 As shown, in this embodiment, a positioning structure 73 is provided between the column portion 521 and the connecting block 522, and a connecting pin 74 is provided between the column portion 521 and the connecting block 522. The provision of the positioning structure and the connecting pin 74 can make the positions of the column portion 521 and the connecting block 522 more stable, and can prevent the connecting block 522 from moving in the connecting groove 5211.

[0052] like Figures 1 to 11 as well as Fig.13 As shown, in this embodiment, the first guide plate 20 includes a first plate body 24 and a second plate body 25, and a first angle is formed between the first plate body 24 and the second plate body 25. The second guide plate 30 includes a third plate body 33 and a fourth plate body 34, and a second angle is formed between the third plate body 33 and the fourth plate body 34, and the first angle and the second angle are the same. The first osteotomy groove 21 is provided on the first plate body 24, and a first opening 251 communicating with the first osteotomy groove 21 is provided on the second plate body 25. The second osteotomy groove 31 is provided on the third plate body 33, and a second opening 341 communicating with the second osteotomy groove 31 is provided on the fourth plate body 34. The provision of the first opening 251 and the second opening 341 enables the tool head of the tool to be inserted therein, and enables the tool to move in the first osteotomy groove 21 and the second osteotomy groove 31.

[0053] Specifically, Figures 1 to 14As shown, the use process of the osteotomy guide device of this embodiment is as follows:

[0054] First, a reference plane is cut on the femur, the base 10 is fixed on the reference plane, the first positioning column 50 and the second positioning column 60 are respectively installed on the first guide plate 20 and the second guide plate 30, and the angle between the first guide plate 20 and the second guide plate 30 is adjusted so that the first positioning column 50 and the second positioning column 60 are both in contact with the surface of the femur, and the positions of the first guide plate 20 and the second guide plate 30 are fixed by the angle adjustment structure 40. After the positions of the first guide plate 20 and the second guide plate 30 are fixed, the first positioning column 50 and the second positioning column 60 are removed, and osteotomy is performed in the first osteotomy groove 21 and the second osteotomy groove 31 by a tool to form a first surface and a second surface with a preset angle, and finally the prosthesis is installed on the first surface and the second surface. At this time, the position of the outer surface of the prosthesis coincides with the outer surface of the original femur, so that the prosthesis can better restore the shape of the original femur.

[0055] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0056] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein are interpreted accordingly.

[0057] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An osteotomy guide device, characterized in that: include: A matrix (10), connected to the bone structure; a first guide plate (20), wherein a first end of the first guide plate (20) is connected to the base body (10), and a first osteotomy groove (21) is provided on the first guide plate (20); a second guide plate (30), wherein a first end of the second guide plate (30) is arranged adjacent to a first end of the first guide plate (20), a second end of the second guide plate (30) is hingedly connected to a second end of the first guide plate (20), a second osteotomy groove (31) is arranged on the second guide plate (30), and an angle between the second guide plate (30) and the first guide plate (20) is adjustable; an angle adjustment structure (40), arranged between the first guide plate (20) and the second guide plate (30), the angle adjustment structure (40) being capable of adjusting the angle between the first guide plate (20) and the second guide plate (30); A first positioning column (50) is detachably connected to the first guide plate (20); when the first positioning column (50) is installed on the first guide plate (20), one end of the first positioning column (50) protrudes downward from the first guide plate (20); A second positioning column (60) is detachably connected to the second guide plate (30); when the second positioning column (60) is installed on the second guide plate (30), one end of the second positioning column (60) protrudes downward from the second guide plate (30); The angle adjustment structure (40) comprises a connecting rod (41), a first end of the connecting rod (41) being connected to a first end of the first guide plate (20), a plurality of adjustment holes (32) being arranged at intervals on a side wall of a second end of the second guide plate (30), the second end of the connecting rod (41) being selectively inserted into one of the plurality of adjustment holes (32), wherein when the second end of the connecting rod (41) is located in different adjustment holes (32), the angle between the second guide plate (30) and the first guide plate (20) is different.

2. The osteotomy guide device according to claim 1, characterized in that: The angle adjustment structure (40) is arranged between the second end of the first guide plate (20) and the second end of the second guide plate (30).

3. The osteotomy guide device according to claim 1, characterized in that: The angle adjustment structure (40) further comprises a rotating column (42), a connecting hole (22) is provided on the side wall of the first guide plate (20), the rotating column (42) is rotatably disposed in the connecting hole (22), and the first end of the connecting rod (41) is connected to the rotating column (42).

4. The osteotomy guide device according to claim 3, characterized in that: The angle adjustment structure (40) further comprises a first limiting groove (43), a second limiting groove (44), a stop column (45) and a first elastic member (46); the first limiting groove (43) is arranged on the surface of the first guide plate (20) and is in communication with the connecting hole (22); the second limiting groove (44) is arranged on the surface of the second guide plate (30) and is in communication with the plurality of adjusting holes (32); the first elastic member (46) is arranged in the connecting hole (22) and is in abutment with the rotating column (42); the stop column (45) is arranged vertically on the rotating column (42) and is inserted into the first limiting groove (43); the second end of the connecting rod (41) is provided with a stop protrusion (411); the stop protrusion (411) can be inserted into the second limiting groove (44).

5. The osteotomy guide device according to claim 1, characterized in that: A connecting tube (23) is provided at one end of the first guide plate (20) away from the base body (10), the first positioning column (50) is inserted into the connecting tube (23), an elastic top bead (51) is provided on the first positioning column (50), a limiting hole (231) is provided on the side wall of the connecting tube (23), and the elastic top bead (51) can be inserted into the limiting hole (231).

6. The osteotomy guide device according to claim 5, characterized in that: A guiding inclined surface (232) is provided on the inner wall of the connecting tube (23), the guiding inclined surface (232) being connected to the limiting hole (231), and in a circumferential direction of the connecting tube (23) from a direction close to the limiting hole (231) to a direction away from the limiting hole (231), the distance between the guiding inclined surface (232) and the axis of the connecting tube (23) gradually decreases.

7. The osteotomy guide device according to claim 5, characterized in that: The osteotomy guide device further comprises a second elastic member (71); the first positioning column (50) comprises a first column section (52), a second column section (53) and an operating end (54); the second column section (53) is located between the first column section (52) and the operating end (54); the elastic top bead (51) is arranged on the first column section (52); the second column section (53) comprises a body portion (531) and an outer protrusion (532); the connecting tube (23) comprises a first hole section (233) and a second hole section (234) located above the first hole section (233); the diameter of the first hole section (233) is smaller than the diameter of the second hole section (234); The diameter of the second hole section (233) is such that a step surface (235) is formed between the first hole section (233) and the second hole section (234); an inner convex block (2341) is provided on the inner wall of the second hole section (234); the second elastic member (71) is provided in the second hole section (234) and is located between the inner convex block (2341) and the step surface (235); when the first positioning column (50) is inserted into the connecting tube (23), the first column section (52) is inserted into the first hole section (233), the second column section (53) is inserted into the second hole section (234), and the outer convex block (532) is in abutment with the second elastic member (71).

8. The osteotomy guide device according to claim 7, characterized in that: The osteotomy guide plate device further comprises a third elastic member (72), the third elastic member (72) extending along the circumference of the connecting tube (23) and being arranged between the inner convex block (2341) and the outer convex block (532).

9. The osteotomy guide device according to claim 7, characterized in that: The first column section (52) comprises a column portion (521) and a connecting block (522); the column portion (521) is provided with a connecting groove (5211); the connecting block (522) is arranged in the connecting groove (5211); a mounting recess (5221) is arranged at the top of the connecting block (522); and the elastic top bead (51) is arranged in the mounting recess (5221).

10. The osteotomy guide device according to claim 9, characterized in that: A positioning structure (73) is provided between the column portion (521) and the connecting block (522), and / or a connecting pin (74) is provided between the column portion (521) and the connecting block (522).

11. The osteotomy guide device according to any one of claims 1 to 10, characterized in that: The first guide plate (20) comprises a first plate body (24) and a second plate body (25), wherein a first angle is formed between the first plate body (24) and the second plate body (25), the second guide plate (30) comprises a third plate body (33) and a fourth plate body (34), wherein a second angle is formed between the third plate body (33) and the fourth plate body (34), wherein the first angle is the same as the second angle, the first osteotomy groove (21) is arranged on the first plate body (24), the second plate body (25) is provided with a first opening (251) connected to the first osteotomy groove (21), the second osteotomy groove (31) is arranged on the third plate body (33), and the fourth plate body (34) is provided with a second opening (341) connected to the second osteotomy groove (31).

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