Surgical guide plate for periacetabular osteotomy

Abstract

The surgical guide plate for periacetabular osteotomy comprises an upper positioning guide plate, a middle positioning guide plate and a lower positioning guide plate. The upper positioning guide plate and the middle positioning guide plate are connected together through an upper connecting mechanism, and the middle positioning guide plate and the lower positioning guide plate are connected together through a lower connecting mechanism; smooth guide surfaces are arranged on the inner sides of the upper positioning guide plate, the middle positioning guide plate and the lower positioning guide plate. The upper connecting mechanism and / or the lower connecting mechanism have / has a spatial position adjusting function, and the upper positioning guide plate, the middle positioning guide plate and the lower positioning guide plate can be fixed into a final operation path curve according to clinical data through the upper positioning mechanism and the lower positioning mechanism after the spatial positions of the upper connecting mechanism and the lower connecting mechanism are adjusted according to clinical requirements. In the operation process, the bone shape needing to be reconstructed can be obtained only by moving the cutting instrument along the guide face, a very good auxiliary effect is achieved for an operation doctor, and the operation difficulty of the operation doctor is greatly reduced.

Description

Technical Field

[0001] The present invention relates to a surgical instrument, in particular to a surgical guide plate used in periacetabular osteotomy. Background Art

[0002] Many hip joint bone diseases are usually related to the underlying anatomical pathological morphology of the pelvis. Treatment usually requires osteotomy reconstruction based on changing the morphology of the pelvis and hip joint. Periacetabular Osteotomy (PAO) can reposition the joint, reconstruct the acetabulum, and effectively correct acetabular coverage abnormalities. Compared with traditional osteotomy surgeries, it can revolutionarily maintain the integrity of the posterior column. Since the surgery is performed from the inside of the pelvis, it causes less damage to the blood supply of the acetabulum. Due to the outstanding advantages and good prognosis of the PAO surgery, this surgery has been widely adopted by surgeons worldwide and has become an important acetabular reconstruction surgery method.

[0003] However, the PAO surgery is also a surgery with quite high requirements. The quality of acetabular position reconstruction is very important for the efficacy of PAO. Moreover, due to high requirements and a complex surgical process, various potential complications are likely to occur, such as nerve injury, thrombosis formation, nonunion, etc. Due to the high surgical requirements, this surgery usually requires a learning curve of more than 30 cases. Due to the high surgical requirements, learning curve, and related complications, etc., although this surgery has clinical demand and strength as a successful treatment method, it also limits the number of experts providing the service.

[0004] Therefore, how to use new technologies, equipment, or auxiliary means to reduce the surgical difficulty, improve the surgical level of doctors, and apply this technology more widely in clinical practice is the key to the current clinical application of PAO.

[0005] This application intends to construct an osteotomy path during the surgery through a newly designed surgical guide plate to provide assistance to doctors, so as to achieve better acetabular position reconstruction and help doctors quickly pass through the learning curve. Summary of the Invention

[0006] The surgical guide plate for periacetabular osteotomy of the present invention constructs an osteotomy path for periacetabular osteotomy through the setting of guiding surfaces in the upper, middle, and lower regions. During clinical surgery, the cutting tool can directly cut along the osteotomy path formed by the guiding surfaces, effectively reducing the surgical difficulty.

[0007] The surgical guide plate for periacetabular osteotomy of the present invention is characterized in that: the surgical guide plate 100 for periacetabular osteotomy includes an upper positioning guide plate 1, a middle positioning guide plate 2, and a lower positioning guide plate 3;

[0008] A. The upper positioning guide plate 1 and the middle positioning guide plate 2 are connected together by an upper connecting mechanism 4, and the middle positioning guide plate 2 and the lower positioning guide plate 3 are connected together by a lower connecting mechanism 5;

[0009] B. The inner sides of the upper positioning guide plate 1, the middle positioning guide plate 2, and the lower positioning guide plate 3 have smooth guiding surfaces 6;

[0010] C. The upper connecting mechanism 4 and / or the lower connecting mechanism 5 has a spatial position adjustment function;

[0011] D. The periacetabular osteotomy surgical guide plate 100 is provided with an upper positioning mechanism 11 and a lower positioning mechanism 31; the upper positioning guide plate 1 extends along the ilium to the iliac wing and is fixed near the arcuate line through the upper positioning mechanism 11; the upper connecting mechanism 4 is adjusted, the middle positioning guide plate 2 descends along the ischium and is fixed beside the ischial spine through the lower positioning mechanism 31, the lower connecting mechanism 5 is adjusted, the lower positioning guide plate 3 is horizontally arranged along the subacetabular groove of the ischium, and the guiding surface 6 constitutes a bone cutting path; during the operation, the cutting instrument sequentially moves along the guiding surfaces 6 of the upper positioning guide plate 1, the middle positioning guide plate 2, and the lower positioning guide plate 3 to perform bone cutting.

[0012] The periacetabular osteotomy usually starts from the iliac wing, cuts along the ilium towards the arcuate line, crosses the arcuate line and then descends along the ischium to beside the ischial spine and then cuts horizontally towards the acetabular joint along the subacetabular groove of the ischium. During this process, to ensure good acetabular reconstruction, the cutting position needs to be straight and stable according to the surgical requirements.

[0013] The periacetabular osteotomy surgical guide plate of the present invention constructs a surgical path through the smooth guiding surfaces 6 provided on the inner sides of the upper positioning guide plate 1, the middle positioning guide plate 2, and the lower positioning guide plate 3. During the clinical operation, the cutting instrument only needs to sequentially move along the guiding surfaces 6 of the upper positioning guide plate 1, the middle positioning guide plate 2, and the lower positioning guide plate 3 to perform bone cutting. Since the upper positioning mechanism 11 is provided near the upper connecting mechanism 4 and the lower positioning mechanism 31 is provided near the lower connecting mechanism 5, and the upper connecting mechanism 4 and / or the lower connecting mechanism 5 has a spatial position adjustment function, therefore, according to the clinical needs, after adjusting the spatial positions of the upper connecting mechanism 4 and the lower connecting mechanism 5, the upper positioning guide plate 1, the middle positioning guide plate 2, and the lower positioning guide plate 3 can be fixed into the final surgical path curve according to the clinical data through the upper positioning mechanism 11 and the lower positioning mechanism 31. During the operation, only by moving the cutting instrument along the surgical path curve can the required reconstructed bone shape be obtained, which has a very good assisting effect on the operating doctor and greatly reduces the surgical operation difficulty of the surgeon.

[0014] The upper positioning guide plate 1, and / or the middle positioning guide plate 2, and / or the lower positioning guide plate 3 are / is provided with a length adjustment mechanism 7, and / or an angle adjustment mechanism 8. The length adjustment mechanism 7 can adjust the length of the guiding surface 6 of the upper positioning guide plate 1, and / or the middle positioning guide plate 2, and / or the lower positioning guide plate 3. The angle adjustment mechanism 8 can be arranged in the middle of the upper positioning guide plate 1, and / or the middle positioning guide plate 2, and / or the lower positioning guide plate 3 to adjust the bending angle of the upper positioning guide plate 1, and / or the middle positioning guide plate 2, and / or the lower positioning guide plate 3 to match different bone contours.

[0015] As needed, the length adjustment mechanism 7 and the angle adjustment mechanism 8 can be arranged at any position of the upper positioning guide plate 1, the middle positioning guide plate 2, and the lower positioning guide plate 3. By adjusting the length and bending angle of the upper positioning guide plate 1, the middle positioning guide plate 2, and the lower positioning guide plate 3, the spatial contour of the bone can be adapted to better achieve spatial positioning.

[0016] The length adjustment mechanism 7 adjusts the length of the upper positioning guide plate 1, and / or the middle positioning guide plate 2, and / or the lower positioning guide plate 3 by means of concave-convex clamping fit, and / or a sliding groove, and / or a threaded method. Preferably, the length adjustment mechanism 7 can adopt a combination of concave-convex clamping fit and a sliding groove. Through the cooperation of sliding and positioning convex steps, the length adjustment of the upper positioning guide plate 1, and / or the middle positioning guide plate 2, and / or the lower positioning guide plate 3 can be realized by simply pushing back and forth. The operation is very simple. The applicant only specifically exemplifies the above three adjustment methods here. In practical applications, those skilled in the art can design different adjustment methods according to needs. The applicant does not exemplify them one by one here, but all do not depart from the protection scope of this application.

[0017] The angle adjustment mechanism 8 is a ball valve adjustment mechanism 81. The ball valve adjustment mechanism 81 includes a ball valve 81-1 and a movement groove 81-2. The ball valve 81-1 can freely rotate in the movement groove 81-2 to achieve three-dimensional spatial positioning. This ball valve type structure has a very simple operation and can achieve positioning at any spatial angle.

[0018] The middle positioning guide plate 2 is provided with a middle positioning mechanism 21. Since the middle positioning guide plate 2 descends along the ischium, therefore, to better fix the middle positioning guide plate 2, the middle positioning guide plate 2 is also provided with a middle positioning mechanism 21. The middle positioning mechanism 21 can be a middle positioning hole 21-1. The middle positioning hole 21-1 usually forms an angle of 30° to 45° with the ischium, and its size matches positioning instruments such as Kirschner wires used in clinical practice. The positioning hole 21-1 is usually arranged near the ischial ramus.

[0019] The middle positioning guide plate 2 is also provided with a margin limiting mechanism 22. The margin limiting mechanism 22 can set the distance between the middle positioning guide plate 2 and the ischial edge. The margin limiting mechanism 22 can be adjusted to set different distances as needed.

[0020] The margin limiting mechanism 22 is provided with a scale 22-1. The scale 22-1 enables clinicians to intuitively and conveniently observe the distance between the middle positioning guide plate 2 and the ischial edge, which is particularly helpful for young doctors.

[0021] The upper end of the middle positioning guide plate 2 has a bending structure 23, and the bending structure 23 has an angle matching the angle between the ilium and the ischium.

[0022] The angle of the bending structure 23 is 100° - 130°. After bending along the arcuate line of the iliac edge, the bending structure 23 fits along the ischium downward. Usually, the angle of the bending structure 23 is 120°.

[0023] The upper positioning mechanism 11 is an upper positioning hole 11-1. The angle between the upper positioning hole 11-1 and the ilium is greater than 30°, and it can be perpendicular to the ilium. The upper positioning hole 11-1 is usually arranged on the arcuate line side of the bending structure 23, near the upper connecting mechanism 4, to fix the distal end of the upper positioning guide plate 1 and the upper end of the middle positioning guide plate 2 near the arcuate line. The upper positioning hole 11-1 usually has a size matching positioning instruments such as Kirschner wires used in clinical practice.

[0024] The lower positioning mechanism 31 is a lower positioning hole 31-1. The lower positioning hole 31-1 is arranged beside the ischial spine, and the angle with the ischium is usually 30° - 45°. Its size matches positioning instruments such as Kirschner wires used in clinical practice.

[0025] The upper connecting mechanism 4 is a ball valve type connecting mechanism. This ball valve type structure is very simple to operate and can achieve positioning at any spatial angle.

[0026] The lower connecting mechanism 5 is a ball valve type connecting mechanism. This ball valve type structure is very simple to operate and can achieve positioning at any spatial angle.

[0027] The angle between the middle positioning guide plate 2 and the lower positioning guide plate 3 is 90° - 130°. The lower positioning guide plate 3 is horizontally arranged along the subacetabular sulcus of the ischium and is usually at an angle of 100° - 110° with the middle positioning guide plate 2.

[0028] During clinical application, the positioning guide plate 1 is arranged along the ilium and extends to the iliac wing, and a Kirschner wire is used to fix it near the arcuate line through the upper positioning hole 11-1; the upper connecting mechanism 4 is adjusted, the middle positioning guide plate 2 descends along the ischium, and the distance between the middle positioning guide plate 2 and the edge of the ischium is adjusted through the margin limiting mechanism 22, and a Kirschner wire is used to fix the middle positioning hole 21-1 near the margin limiting mechanism 22 on the ramus of the ischium, and then a Kirschner wire is used to fix it near the ischial spine through the lower positioning hole 31-1. The lower connecting mechanism 5 is adjusted, and the lower positioning guide plate 3 is arranged horizontally along the subacetabular groove of the ischium. During the positioning process, according to the bone condition, the length of the upper positioning guide plate 1, and / or the middle positioning guide plate 2, and / or the lower positioning guide plate 3 is adjusted through the length adjusting mechanism 7, and then the bending angle of the upper positioning guide plate 1, and / or the middle positioning guide plate 2, and / or the lower positioning guide plate 3 is adjusted through the angle adjusting mechanism 8 to form a spatial positioning. The guiding surfaces 6 arranged on the inner sides of the upper positioning guide plate 1, the middle positioning guide plate 2 and the lower positioning guide plate 3 constitute a complete surgical guiding path, and then a cutting instrument is used to move along the guiding surfaces 6 arranged on the inner sides of the upper positioning guide plate 1, the middle positioning guide plate 2 and the lower positioning guide plate 3 to cut the bone.

[0029] The upper positioning guide plate 1, the middle positioning guide plate 2 and the lower positioning guide plate 3 of the surgical guide plate for periacetabular osteotomy of the present invention. The upper positioning guide plate 1 and the middle positioning guide plate 2 are connected together through the upper connecting mechanism 4, and the middle positioning guide plate 2 and the lower positioning guide plate 3 are connected together through the lower connecting mechanism 5; smooth guiding surfaces 6 are arranged on the inner sides of the upper positioning guide plate 1, the middle positioning guide plate 2 and the lower positioning guide plate 3. The upper connecting mechanism 4 and / or the lower connecting mechanism 5 has a spatial position adjusting function. Therefore, according to clinical needs, after adjusting the spatial positions of the upper connecting mechanism 4 and the lower connecting mechanism 5, the upper positioning guide plate 1, the middle positioning guide plate 2 and the lower positioning guide plate 3 can be fixed into the final surgical path curve according to clinical data through the upper positioning mechanism 11 and the lower positioning mechanism 31. During the surgical process, only by moving the cutting instrument along the guiding surface 6 can the required reconstructed bone shape be obtained, which has a very good assisting effect on the operating doctor and greatly reduces the surgical operation difficulty of the surgeon. Brief Description of the Drawings

[0030] Figure 1 is a three-dimensional structural schematic diagram of the surgical guide plate for periacetabular osteotomy of the present invention.

[0031] Figure 1-1 is Figure 1 the A-A cross-sectional view of.

[0032] Figure 1-2 is Figure 1 the B-B cross-sectional view of.

[0033] Figure 1-3 is Figure 1 a C-C cross-sectional view of

[0034] Figure 1-4 is Figure 1 a D-D cross-sectional view of

[0035] Figure 2 is Figure 1 a three-dimensional structural schematic diagram when the angle adjustment mechanism of

[0036] Figure 2-1 is Figure 2 an E-E cross-sectional view of

[0037] Figure 3 a three-dimensional structural schematic diagram of the acetabular periacetabular osteotomy surgical guide plate of the present invention marked with scales.

[0038] Figure 4 is the working principle diagram of the acetabular periacetabular osteotomy surgical guide plate of the present invention.

[0039] In the above figures:

[0040] 100 is the acetabular periacetabular osteotomy surgical guide plate of the present invention.

[0041] 1 is the upper positioning guide plate, 2 is the middle positioning guide plate, 3 is the lower positioning guide plate, 4 is the upper connecting mechanism, 5 is the lower connecting mechanism, 6 is the guiding surface, 7 is the length adjustment mechanism, and 8 is the angle adjustment mechanism.

[0042] 11 is the upper positioning mechanism, and 11-1 is the upper positioning hole.

[0043] 21 is the middle positioning mechanism, 21-1 is the middle positioning hole; 22 is the margin limiting mechanism, 22-1 is the scale, 22-2 is the positioning post, 22-21 is the stud, 22-22 is the nut, 22-3 is the limiting groove; 23 is the bending structure.

[0044] 31 is the lower positioning mechanism, and 31-1 is the lower positioning hole.

[0045] 41 is the rotating mechanism, and 42 is the space angle adjustment mechanism.

[0046] 71 is the adjustment buckle, and 72 is the limit seat.

[0047] 81 is the ball valve adjustment mechanism, 81-1 is the ball valve, and 81-2 is the movement groove. Specific implementation mode

[0048] Example: The acetabular periacetabular osteotomy surgical guide plate of the present invention

[0049] Refer to Figures 1 to 4, in this embodiment, the acetabular periacetabular osteotomy surgical guide 100 includes an upper positioning guide 1, a middle positioning guide 2, and a lower positioning guide 3.

[0050] Reference Figure 1 and Figure 2 , the inner sides of the upper positioning guide 1, the middle positioning guide 2, and the lower positioning guide 3 have smooth guiding surfaces 6.

[0051] The upper positioning guide 1 and the middle positioning guide 2 are connected together by an upper connecting mechanism 4, and the middle positioning guide 2 and the lower positioning guide 3 are connected together by a lower connecting mechanism 5.

[0052] In this embodiment, the acetabular periacetabular osteotomy surgical guide 100 is provided with an upper positioning mechanism 11, a middle positioning mechanism 21, and a lower positioning mechanism 31.

[0053] The upper positioning mechanism 11 is a positioning hole 11-1. The angle between the upper positioning hole 11-1 and the ilium is greater than 30°, and it can be perpendicular to the ilium. The upper positioning hole 11-1 is usually arranged on the arcuate line side of the bending structure 23, near the upper connecting mechanism 4, to fix the distal end of the upper positioning guide 1 and the upper end of the middle positioning guide 2 near the arcuate line. The upper positioning hole 11-1 usually has a size matching that of positioning instruments such as Kirschner wires used in clinical practice. During clinical application.

[0054] Since the middle positioning guide 2 descends along the ischium, therefore, to better fix the middle positioning guide 2, the middle positioning guide 2 is also provided with a middle positioning mechanism 21. The middle positioning mechanism 21 is a middle positioning hole 21-1. The middle positioning hole 21-1 and the ischium usually form an angle of 30° to 45°, and the size matches that of positioning instruments such as Kirschner wires used in clinical practice. The positioning hole 21-1 is usually arranged near the ischial ramus.

[0055] The lower positioning mechanism 31 is a lower positioning hole 31-1. The lower positioning hole 31-1 is arranged beside the ischial spine, and forms an angle of 30° to 45° with the ischium, and the size matches that of positioning instruments such as Kirschner wires used in clinical practice.

[0056] In this embodiment, the middle positioning guide 2 is also provided with a margin limiting mechanism 22. The margin limiting mechanism 22 can set the distance between the middle positioning guide 2 and the edge of the ischium. The margin limiting mechanism 22 can be adjusted to set different distances as needed.

[0057] Reference Figure 3 , the margin limiting mechanism 22 is provided with a scale 22-1. The scale 22-1 can enable clinicians to intuitively and conveniently observe the distance between the middle positioning guide 2 and the edge of the ischium, and has a good guiding effect especially on young doctors.

[0058] Reference Figure 1 and Figure 2 In this embodiment, the margin limiting mechanism 22 is a positioning groove type limiting mechanism. The margin limiting mechanism 22 includes a positioning post 22-2 and a limiting groove 22-3. The positioning post 22-2 includes a stud 22-21 and a nut 22-22. Rotating the nut 22-22 can fix the positioning post 22-2 in the limiting groove 22-3 to limit the margin. Loosening the nut 22-22 allows the positioning post 22-2 to slide in the limiting groove 22-3 to adjust the margin value.

[0059] The upper end of the middle positioning guide plate 2 has a bending structure 23, and the bending structure 23 has an angle matching the angle between the ilium and the ischium.

[0060] The bending structure 23 bends along the arcuate line of the iliac bone edge and then adheres to the ischium and descends. Usually, the angle of the bending structure 23 is 120°.

[0061] Reference Figure 1 and Figure 1-1 In this embodiment, the upper connecting mechanism 4 has a spatial position adjustment function.

[0062] The upper connecting mechanism 4 includes a rotating mechanism 41 and a spatial angle adjustment mechanism 42. The rotating mechanism 41 can rotate around the rotation axis to adjust the planar angle between the upper positioning guide plate 1 and the middle positioning guide plate 2. The spatial angle adjustment mechanism 42 is a ball valve type mechanism that can achieve positioning at any spatial angle.

[0063] The lower connecting mechanism 5 is integrally manufactured to connect the middle positioning guide plate 2 and the lower positioning guide plate 3 together. There is an angle of 100° to 110° between the middle positioning guide plate 2 and the lower positioning guide plate 3.

[0064] Reference Figures 1 to 3 In this embodiment, the length adjustment mechanism 7 is provided on the upper positioning guide plate 1, the middle positioning guide plate 2, and the lower positioning guide plate 3. The angle adjustment mechanism 8 is provided in the middle of the upper positioning guide plate 1 and the lower positioning guide plate 3.

[0065] The length adjustment mechanism 7 can adjust the length of the guiding surface 6 of the upper positioning guide plate 1, the middle positioning guide plate 2, and the lower positioning guide plate 3. The angle adjustment mechanism 8 can adjust the bending angles of the upper positioning guide plate 1 and the lower positioning guide plate 3 to match the bone contours of different iliums and ischiums.

[0066] Reference Figure 1-1 and Figure 1-2, in this embodiment, the length adjustment mechanism 7 includes an adjustment buckle 71 and a limit seat 72. The adjustment buckle 71 and the limit seat 72 are positioned through concave-convex clamping. Push the adjustment buckle 71, and the adjustment buckle 71 moves along the limit seat 72. Loosen the adjustment buckle 71, and the positioning teeth of the adjustment buckle 71 are embedded in the groove of the limit seat 72 to achieve positioning. By simply pushing back and forth, the lengths of the positioning guide plate 1, the middle positioning guide plate 2, and the lower positioning guide plate 3 can be adjusted. Moreover, since it is a linear motion, the occupied space is very small and the clinical operation is simple.

[0067] The applicant only specifically exemplifies one length adjustment method here. In practical applications, those skilled in the art can design different adjustment methods according to needs, such as other various adjustment methods like chute and threaded methods. The applicant does not list them one by one here, but they all fall within the protection scope of this application.

[0068] Reference Figure 1-4 and Figure 2-1 , the angle adjustment mechanism 8 is a ball valve adjustment mechanism 81. The ball valve adjustment mechanism 81 includes a ball valve 81-1 and a movement groove 81-2. The ball valve 81-1 can freely rotate in the movement groove 81-2 to achieve three-dimensional space positioning. This ball valve type structure is very simple to operate and can achieve positioning at any spatial angle.

[0069] Reference Figure 4 , during clinical application, extend the positioning guide plate 1 along the ilium to the iliac wing, and use a Kirschner wire to fix it near the arcuate line through the upper positioning hole 11-1; adjust the upper connection mechanism 4, the middle positioning guide plate 2 descends along the ischium, adjust the distance between the middle positioning guide plate 2 and the edge of the ischium through the margin limiting mechanism 22, and use a Kirschner wire to fix the middle positioning hole 21-1 near the margin limiting mechanism 22 on the ramus of the ischium, then use a Kirschner wire to fix it beside the ischial spine through the lower positioning hole 31-1. The lower positioning guide plate 3 is horizontally arranged along the subacetabular groove of the ischium. During the positioning process, according to the bone condition, adjust the lengths of the upper positioning guide plate 1, the middle positioning guide plate 2, and the lower positioning guide plate 3 through the length adjustment mechanism 7, and then adjust the bending angles of the upper positioning guide plate 1 and the lower positioning guide plate 3 through the angle adjustment mechanism 8 to form a three-dimensional positioning. The guiding surfaces 6 arranged on the inner sides of the upper positioning guide plate 1, the middle positioning guide plate 2, and the lower positioning guide plate 3 constitute a complete surgical guiding path, and then use a cutting instrument to move along the guiding surfaces 6 arranged on the inner sides of the upper positioning guide plate 1, the middle positioning guide plate 2, and the lower positioning guide plate 3 to cut the bone.

[0070] The surgical guide for periacetabular osteotomy in this embodiment constructs a surgical path through the smooth guiding surfaces 6 provided on the inner sides of the upper positioning guide plate 1, the middle positioning guide plate 2, and the lower positioning guide plate 3. During clinical surgery, the cutting instrument only needs to move along the guiding surfaces 6 of the upper positioning guide plate 1, the middle positioning guide plate 2, and the lower positioning guide plate 3 in sequence to perform bone cutting. Since an upper positioning mechanism 11 is provided near the upper connecting mechanism 4, and a lower positioning mechanism 31 is provided near the lower connecting mechanism 5, and the upper connecting mechanism 4 and / or the lower connecting mechanism 5 has a spatial position adjustment function, therefore, according to clinical needs, after adjusting the spatial positions of the upper connecting mechanism 4 and the lower connecting mechanism 5, the upper positioning guide plate 1, the middle positioning guide plate 2, and the lower positioning guide plate 3 can be fixed into the final surgical path curve according to clinical data through the upper positioning mechanism 11 and the lower positioning mechanism 31. During the surgical process, only by moving the cutting instrument along the surgical path curve can the required bone shape for reconstruction be obtained, which has a very good assisting effect on the operating doctor and greatly reduces the surgical operation difficulty of the surgeon.

[0071] It should be noted that the structures disclosed and described herein can be replaced by other structures with the same effect, and the embodiments introduced in the present invention are not the only structures for implementing the present invention. Although the preferred embodiments of the present invention have been introduced and described herein, those skilled in the art clearly know that these embodiments are only illustrative. Those skilled in the art can make countless changes, improvements, and substitutions without departing from the present invention. Therefore, the protection scope of the present invention should be defined according to the spirit and scope of the appended claims of the present invention.

Claims

1. Acetabular periacetabular osteotomy surgical guide plate, characterized in that: The acetabular periacetabular osteotomy surgical guide (100) includes an upper positioning guide (1), a middle positioning guide (2), and a lower positioning guide (3); A. The upper positioning guide (1) and the middle positioning guide (2) are connected together by an upper connecting mechanism (4), and the middle positioning guide (2) and the lower positioning guide (3) are connected together by a lower connecting mechanism (5); B. The inner sides of the upper positioning guide (1), the middle positioning guide (2), and the lower positioning guide (3) have smooth guiding surfaces (6); C. The upper connecting mechanism (4) and / or the lower connecting mechanism (5) has a spatial position adjustment function; D. The acetabular periacetabular osteotomy surgical guide (100) is provided with an upper positioning mechanism (11) and a lower positioning mechanism (31); the upper positioning guide (1) extends along the ilium to the iliac wing and is fixed near the arcuate line through the upper positioning mechanism (11); by adjusting the upper connecting mechanism (4), the middle positioning guide (2) descends along the ischium and is fixed beside the ischial spine through the lower positioning mechanism (31), and by adjusting the lower connecting mechanism (5), the lower positioning guide (3) is horizontally arranged along the subacetabular groove of the ischium, and the guiding surface (6) constitutes a bone cutting path; during the operation, the cutting instrument moves along the guiding surfaces (6) of the upper positioning guide (1), the middle positioning guide (2), and the lower positioning guide (3) in sequence to perform bone cutting.

2. The acetabular periacetabular osteotomy surgical guide according to claim 1, wherein: The upper positioning guide (1) and / or the middle positioning guide (2) and / or the lower positioning guide (3) is provided with a length adjustment mechanism (7) and / or an angle adjustment mechanism (8).

3. The acetabular periacetabular osteotomy surgical guide according to claim 2, wherein: The length adjustment mechanism (7) adjusts the length of the upper positioning guide (1) and / or the middle positioning guide (2) and / or the lower positioning guide (3) by means of concave-convex clamping, and / or a sliding groove, and / or a threaded manner.

4. The acetabular periacetabular osteotomy surgical guide according to claim 2, characterized in that: The angle adjustment mechanism (8) is a ball valve adjustment mechanism (81).

5. The acetabular periacetabular osteotomy surgical guide according to claim 1, wherein: The middle positioning guide (2) is provided with a middle positioning mechanism (21).

6. The acetabular periacetabular osteotomy surgical guide according to claim 1, characterized in that: The middle positioning guide (2) is further provided with a margin limiting mechanism (22).

7. The acetabular periacetabular osteotomy surgical guide according to claim 6, wherein: The margin limiting mechanism (22) is provided with a scale (22-1).

8. The acetabular periacetabular osteotomy surgical guide according to claim 1, characterized in that: The upper end of the middle positioning guide (2) has a bending structure (23), and the bending structure (23) has an angle matching the angle between the ilium and the ischium.

9. The acetabular periacetabular osteotomy surgical guide according to claim 8, characterized in that: The angle of the bending structure (23) is 100° - 130°.

10. The acetabular periacetabular osteotomy surgical guide according to claim 1, characterized in that: The upper positioning mechanism (11) is an upper positioning hole (11-1).

11. The acetabular periacetabular osteotomy surgical guide according to claim 1, wherein: The lower positioning mechanism (31) is a lower positioning hole (31-1).

12. The acetabular periacetabular osteotomy surgical guide according to claim 1, characterized in that: The upper connecting mechanism (4) is a ball valve type connecting mechanism.

13. The acetabular periacetabular osteotomy surgical guide according to claim 1, characterized in that: The lower connecting mechanism (5) is a ball valve type connecting mechanism.

14. The acetabular periacetabular osteotomy surgical guide according to claim 1, wherein: The angle between the middle positioning guide (2) and the lower positioning guide (3) is 90° - 130°.

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