Surgical guide plate for periacetabular osteotomy
By designing the periacetabular osteotomy surgical guide plate and using the guide surface and the adjustment mechanism to construct the osteotomy path, the complexity and complications of periacetabular osteotomy are solved, reducing the difficulty of surgery and improving the reconstruction of acetabular position Accuracy and efficiency.
Patent Information
- Application Number
- CN202420132211.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-19
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-01-19
AI Technical Summary
Periacetabular osteotomy is a complex surgery that is highly demanding and prone to complications, resulting in a long learning curve and limiting the number of experts to the application.
A periacetabular osteotomy surgical guide plate was designed to construct an osteotomy path through the guide surface setting of the upper, middle and lower areas, providing cutting tools to cut along the guide surface, reducing the difficulty of surgery, and connecting mechanisms and The adjustment function is positioned according to the skeleton morphology.
It significantly reduces the difficulty of the surgery, helps doctors to quickly transition the learning curve, improves the accuracy and efficiency of acetabular position reconstruction, and reduces the risk of complications.
Smart Images
Figure CN222130210U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a surgical instrument, in particular to a surgical guide plate used in periacetabular osteotomy. Background Art
[0002] Many hip bone diseases are usually related to the underlying pelvic anatomical pathology, and treatment usually requires osteotomy and 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, it can revolutionize the integrity of the posterior column. Since it is performed from inside the pelvis, it is less destructive to the blood flow of the acetabulum. Due to the outstanding advantages and good prognosis of PAO surgery, this surgery is widely used by surgeons worldwide and has become an important acetabular reconstruction surgery method.
[0003] However, PAO surgery is also a very demanding surgery. The quality of acetabular reconstruction is very important for the efficacy of PAO. Moreover, due to the high requirements and complicated surgical procedures, various potential complications are prone to occur, such as nerve damage, thrombosis, and nonunion. 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, although this surgery has clinical demand and power as a successful treatment method, it also limits the number of experts who can provide services.
[0004] Therefore, how to use new technologies, equipment or auxiliary means to reduce the difficulty of surgery, 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 use a newly designed surgical guide to construct an osteotomy path during surgery, provide assistance to doctors, achieve better acetabular position reconstruction, and help doctors quickly overcome the learning curve. Summary of the invention
[0006] The utility model of the periacetabular osteotomy surgical guide plate constructs an osteotomy path for periacetabular osteotomy by setting guide surfaces in the upper, middle and lower regions. During clinical surgery, the cutting tool can directly cut along the osteotomy path formed by the guide surfaces, effectively reducing the difficulty of the surgery.
[0007] The utility model of the periacetabular osteotomy surgical guide plate is characterized in that: the periacetabular osteotomy surgical guide plate 100 comprises 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 is connected to the middle positioning guide plate 2 via an upper connecting mechanism 4, and the middle positioning guide plate 2 is connected to the lower positioning guide plate 3 via 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 guide surfaces 6;
[0010] C. The upper connecting mechanism 4 and / or the lower connecting mechanism 5 have a spatial position adjustment function;
[0011] D. The periacetabular osteotomy surgical guide 100 is provided with an upper positioning mechanism 11 and a lower positioning mechanism 31; the upper positioning guide 1 is arranged along the ilium and extends to the iliac wing, and is fixed near the arcuate line by the upper positioning mechanism 11; the upper connecting mechanism 4 is adjusted, the middle positioning guide 2 is moved downward along the ischium, and is fixed beside the ischial spine by the lower positioning mechanism 31, the lower connecting mechanism 5 is adjusted, the lower positioning guide 3 is arranged horizontally along the inferior ischial acetabular groove, and the guide surface 6 constitutes a bone cutting path; during the operation, the cutting instrument moves along the guide surfaces 6 of the upper positioning guide 1, the middle positioning guide 2 and the lower positioning guide 3 in sequence to cut the bone.
[0012] Acetabular osteotomy usually starts from the iliac wing, cutting along the ilium to the arcuate line, crossing the arcuate line and then going down along the sciatic bone to the side of the ischial spine and then cutting along the level of the inferior acetabular groove toward the acetabular joint. In this process, in order to ensure good acetabular reconstruction, the cutting position needs to be kept straight and stable according to the surgical requirements.
[0013] The surgical guide plate for periacetabular osteotomy of the utility model constructs a surgical path by setting a smooth guide surface 6 on the inner side of the upper positioning guide plate 1, the middle positioning guide plate 2 and the lower positioning guide plate 3. In clinical surgery, the cutting instrument only needs to move along the guide 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 cut the bone. 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, the upper connecting mechanism 4 and / or the lower connecting mechanism 5 have 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 operation, the cutting instrument only needs to move along the surgical path curve to obtain the bone shape required to be reconstructed, which has a very good auxiliary effect on the operating doctor and greatly reduces the difficulty of the surgical operation 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 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 guide 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 set 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 to adapt to the spatial contour of the bone, better spatial positioning can be achieved.
[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 card matching, and / or sliding grooves, and / or threading. The length adjustment mechanism 7 can preferably adopt the combination of concave-convex card matching and sliding grooves, and can achieve 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 by simply pushing back and forth through the cooperation of sliding and positioning convex steps, and the operation is very simple. The applicant only specifically illustrates the above three adjustment methods. In actual applications, technicians in this field can design different adjustment methods as needed. The applicant does not illustrate them one by one here, but they all do not deviate 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 motion groove 81-2. The ball valve 81-1 can rotate freely in the motion groove 81-2 to achieve spatial three-dimensional positioning. This ball valve type structure is very simple to operate 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 is moved downward along the ischium, in order to better fix the middle positioning guide plate 2, the middle positioning guide plate 2 is also provided with a middle positioning mechanism 21, and the middle positioning mechanism 21 can be a middle positioning hole 21-1, and the middle positioning hole 21-1 is usually 30° to 45° with the ischium, and the size matches the positioning instruments such as Kirschner wires used clinically. The positioning hole 21-1 is usually set near the ischium branch.
[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 ischium 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 edge of the ischium, which is particularly useful for guiding 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 that matches the angle between the ilium and the ischium.
[0022] The angle of the bending structure 23 is 100° to 130°. The bending structure 23 is bent along the arcuate line of the edge of the ilium and then moves downward along the ischium. 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 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, and the distal end of the upper positioning guide plate 1 and the upper end of the middle positioning guide plate 2 are fixed near the arcuate line. The upper positioning hole 11-1 usually has a size that matches the positioning instruments such as Kirschner wires used clinically, and is used clinically.
[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, usually at an angle of 30° to 45° to the ischium, and its size matches that of positioning instruments such as Kirschner wires used clinically.
[0025] The upper connection mechanism 4 is a ball valve type connection mechanism. This ball valve type structure is very simple to operate and can achieve positioning at any spatial angle.
[0026] The lower connection mechanism 5 is a ball valve type connection 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° to 130°. The lower positioning guide plate 3 is arranged horizontally along the inferior ischiacetabular groove, and is usually 100° to 110° with the middle positioning guide plate 2.
[0028] In clinical application, the positioning guide plate 1 is set along the ilium and extends to the iliac wing, and is fixed near the arcuate line by using a Kirschner wire through the upper positioning hole 11-1; the upper connecting mechanism 4 is adjusted, the middle positioning guide plate 2 is moved downward along the ischium, and the distance between the middle positioning guide plate 2 and the edge of the ischium is adjusted by the margin limiting mechanism 22, and the middle positioning hole 21-1 near the margin limiting mechanism 22 is fixed to the ischial ramus with a Kirschner wire, and then the Kirschner wire is fixed to the side of the ischial spine through the lower positioning hole 31-1, and the lower connecting mechanism 5 is adjusted, and the lower positioning guide plate 3 is set horizontally along the inferior groove of the ischial acetabulum. During the positioning process, according to the bone shape, In this case, 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 by the length adjustment 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 by the angle adjustment mechanism 8 to form spatial positioning, and the guide 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 completed surgical guide path, and then a cutting instrument is used to move along the guide 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 utility model of the periacetabular osteotomy surgical guide plate includes a positioning guide plate 1, a middle positioning guide plate 2 and a lower positioning guide plate 3. 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; the inner sides of the upper positioning guide plate 1, the middle positioning guide plate 2 and the lower positioning guide plate 3 have a smooth guide surface 6. The upper connecting mechanism 4 and / or the lower connecting mechanism 5 have 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 operation, the cutting instrument only needs to be moved along the guide surface 6 to obtain the bone shape required for reconstruction, which has a very good auxiliary effect on the operating doctor and greatly reduces the difficulty of the surgical operation of the surgeon. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] Figure 1 The utility model is a three-dimensional structural schematic diagram of a surgical guide plate for periacetabular osteotomy.
[0031] Figure 1-1 yes Figure 1 AA section view.
[0032] Figure 1-2 yes Figure 1BB cross-sectional view.
[0033] Figure 1-3 yes Figure 1 CC cross-sectional view.
[0034] Figure 1-4 yes Figure 1 DD cross-sectional view.
[0035] Figure 2 yes Figure 1 Schematic diagram of the three-dimensional structure when the angle adjustment mechanism performs spatial angle adjustment.
[0036] Figure 2-1 yes Figure 2 EE cross-sectional view.
[0037] Figure 3 The utility model is a three-dimensional structural schematic diagram of a surgical guide plate for periacetabular osteotomy with scales.
[0038] Figure 4 The utility model is a working principle diagram of a surgical guide plate for periacetabular osteotomy.
[0039] In the above figure:
[0040] 100 is a surgical guide plate for periacetabular osteotomy of the present invention.
[0041] 1 is an upper positioning guide plate, 2 is a middle positioning guide plate, 3 is a lower positioning guide plate, 4 is an upper connecting mechanism, 5 is a lower connecting mechanism, 6 is a guide surface, 7 is a length adjustment mechanism, and 8 is an angle adjustment mechanism.
[0042] 11 is an upper positioning mechanism, and 11-1 is an upper positioning hole.
[0043] 21 is a center positioning mechanism, 21-1 is a center positioning hole; 22 is a margin limiting mechanism, 22-1 is a scale, 22-2 is a positioning column, 22-21 is a stud, 22-22 is a nut, 22-3 is a limiting groove; 23 is a bending structure.
[0044] 31 is a lower positioning mechanism, and 31-1 is a lower positioning hole.
[0045] 41 is a rotating mechanism, and 42 is a spatial angle adjustment mechanism.
[0046] 71 is an adjusting buckle, and 72 is a limiting seat.
[0047] 81 is a ball valve adjustment mechanism, 81-1 is a ball valve, and 81-2 is a motion groove. DETAILED DESCRIPTION
[0048] Embodiment: Surgical guide plate for periacetabular osteotomy of the utility model
[0049] refer to Figures 1 to 4 In this embodiment, the periacetabular osteotomy surgical guide plate 100 includes an upper positioning guide plate 1 , a middle positioning guide plate 2 and a lower positioning guide plate 3 .
[0050] refer to Figure 1 and Figure 2 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 guide surfaces 6 .
[0051] The upper positioning guide plate 1 is connected to the middle positioning guide plate 2 via an upper connecting mechanism 4 , and the middle positioning guide plate 2 is connected to the lower positioning guide plate 3 via a lower connecting mechanism 5 .
[0052] In this embodiment, the periacetabular osteotomy surgical guide plate 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 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, and the distal end of the upper positioning guide plate 1 and the upper end of the middle positioning guide plate 2 are fixed near the arcuate line. The upper positioning hole 11-1 usually has a size that matches the positioning instruments such as Kirschner wires used clinically, and is used clinically.
[0054] Since the middle positioning guide plate 2 is moved downward along the ischium, a middle positioning mechanism 21 is further provided on the middle positioning guide plate 2 to better fix the middle positioning guide plate 2. The middle positioning mechanism 21 is a middle positioning hole 21-1. The middle positioning hole 21-1 is usually 30° to 45° with the ischium, and its size matches that of positioning instruments such as Kirschner wires used clinically. The positioning hole 21-1 is usually arranged near the ischium branch.
[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, usually at an angle of 30° to 45° to the ischium, and its size matches that of positioning instruments such as Kirschner wires used clinically.
[0056] In this embodiment, the middle positioning guide plate 2 is further 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 ischium edge. The margin limiting mechanism 22 can be adjusted to set different distances as needed.
[0057] refer to Figure 3 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 edge of the ischium, which is particularly useful for guiding young doctors.
[0058] refer to Figure 1 and Figure 2 In this embodiment, the margin limiting mechanism 22 is a positioning groove type limiting mechanism, and the margin limiting mechanism 22 includes a positioning column 22-2 and a limiting groove 22-3. The positioning column 22-2 includes a stud 22-21 and a nut 22-22. The positioning column 22-2 can be fixed in the limiting groove 22-3 by rotating the nut 22-22 to limit the margin. Loosen the nut 22-22, and the positioning column 22-2 can 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 that matches the angle between the ilium and the ischium.
[0060] The bending structure 23 is bent along the arcuate line of the edge of the ilium and then moves downward in close proximity to the ischium. Usually, the angle of the bending structure 23 is 120°.
[0061] refer to Figure 1 and Figure 1-1 In this embodiment, the upper connecting mechanism 4 has a spatial position adjustment function.
[0062] The upper connection mechanism 4 includes a rotation mechanism 41 and a spatial angle adjustment mechanism 42. The rotation mechanism 41 can rotate around the rotation axis to adjust the plane angle between the upper positioning guide plate 1 and the middle positioning guide plate 2, and the spatial angle adjustment mechanism 42 is a ball valve type mechanism that can achieve positioning at any spatial angle.
[0063] The lower connection mechanism 5 is integrally manufactured to connect the middle positioning guide plate 2 and the lower positioning guide plate 3 together, and an angle of 100° to 110° is formed between the middle positioning guide plate 2 and the lower positioning guide plate 3 .
[0064] refer to 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 guide 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 angle of the upper positioning guide plate 1 and the lower positioning guide plate 3 to match the bone contours of different ilium and ischium.
[0066] refer to Figure 1-1 and Figure 1-2In this embodiment, the length adjustment mechanism 7 includes an adjustment buckle 71 and a limiting seat 72. The adjustment buckle 71 and the limiting seat 72 are positioned by concave-convex card fit. When the adjustment buckle 71 is pushed, the adjustment buckle 71 moves along the limiting seat 72. When the adjustment buckle 71 is loosened, the positioning teeth of the adjustment buckle 71 are embedded in the groove of the limiting seat 72 to achieve positioning. The length adjustment of the positioning guide plate 1, the middle positioning guide plate 2 and the lower positioning guide plate 3 can be achieved by simply pushing back and forth. Moreover, due to the linear motion, the space occupied is very small and the clinical operation is simple.
[0067] The applicant only specifically illustrates one length adjustment method. In actual applications, technicians in this field can design different adjustment methods as needed, such as slide grooves, threaded methods and other various adjustment methods. The applicant does not illustrate them one by one here, but they all do not depart from the scope of protection of this application.
[0068] refer to 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 motion groove 81-2. The ball valve 81-1 can rotate freely in the motion groove 81-2 to achieve spatial three-dimensional positioning. This ball valve type structure is very simple to operate and can achieve positioning at any spatial angle.
[0069] refer to Figure 4 In clinical application, the positioning guide plate 1 is set along the ilium and extends to the iliac wing, and is fixed near the arcuate line by using a Kirschner wire through the upper positioning hole 11-1; the upper connecting mechanism 4 is adjusted, and the middle positioning guide plate 2 is moved downward along the ischium, and the distance between the middle positioning guide plate 2 and the edge of the ischium is adjusted by the margin limiting mechanism 22, and the middle positioning hole 21-1 near the margin limiting mechanism 22 is fixed to the ischial ramus with a Kirschner wire, and then the Kirschner wire is fixed to the side of the ischial spine through the lower positioning hole 31-1, and the lower positioning guide plate 3 is set horizontally along the inferior groove of the ischial acetabulum. During the positioning process According to the bone condition, the length of the upper positioning guide plate 1, the middle positioning guide plate 2 and the lower positioning guide plate 3 are adjusted by the length adjustment mechanism 7, and then the bending angles of the upper positioning guide plate 1 and the lower positioning guide plate 3 are adjusted by the angle adjustment mechanism 8 to form spatial positioning. The guide 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 guide path, and then a cutting instrument is used to move along the guide 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 acetabular periarthritis osteotomy surgical guide of this embodiment constructs a surgical path by setting a smooth guide surface 6 on the inner side of the upper positioning guide plate 1, the middle positioning guide plate 2 and the lower positioning guide plate 3. In clinical surgery, the cutting instrument only needs to move along the guide 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 cut the bone. 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, the upper connecting mechanism 4 and / or the lower connecting mechanism 5 have 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 operation, the cutting instrument only needs to move along the surgical path curve to obtain the bone shape to be reconstructed, which has a very good auxiliary effect on the operating doctor and greatly reduces the difficulty of the surgical operation 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 described in the present utility model are not the only structures for realizing the present utility model. Although the preferred embodiments of the present utility model have been described and described herein, it is clear to those skilled in the art that these embodiments are only examples, and those skilled in the art can make numerous changes, improvements and substitutions without departing from the present utility model. Therefore, the protection scope of the present utility model should be defined in accordance with the spirit and scope of the claims attached to the present utility model.
Claims
1. A surgical guide for periacetabular osteotomy, characterized by: The periacetabular osteotomy surgical guide plate (100) comprises an upper positioning guide plate (1), a middle positioning guide plate (2) and a lower positioning guide plate (3); The upper positioning guide plate (1) and the middle positioning guide plate (2) are connected together via an upper connecting mechanism (4), and the middle positioning guide plate (2) and the lower positioning guide plate (3) are connected together via a lower connecting mechanism (5); The inner sides of the upper positioning guide plate (1), the middle positioning guide plate (2) and the lower positioning guide plate (3) are provided with smooth guide surfaces (6); The upper connecting mechanism (4) and / or the lower connecting mechanism (5) have a spatial position adjustment function; The periacetabular osteotomy surgical guide (100) is provided with an upper positioning mechanism (11) and a lower positioning mechanism (31); the upper positioning guide (1) is arranged along the ilium and extends to the iliac wing, and is fixed near the arcuate line by the upper positioning mechanism (11); the upper connecting mechanism (4) is adjusted, the middle positioning guide (2) is moved downward along the ischium, and is fixed beside the ischial spine by the lower positioning mechanism (31); the lower connecting mechanism (5) is adjusted, the lower positioning guide (3) is arranged horizontally along the ischial inferior acetabular groove, and the guide surface (6) constitutes a bone cutting path; during the operation, the cutting instrument moves along the guide surfaces (6) of the upper positioning guide (1), the middle positioning guide (2) and the lower positioning guide (3) in sequence to cut the bone.
2. The periacetabular osteotomy surgical guide according to claim 1, characterized in that: The upper positioning guide plate (1), and / or the middle positioning guide plate (2), and / or the lower positioning guide plate (3) are provided with a length adjustment mechanism (7) and / or an angle adjustment mechanism (8).
3. The periacetabular osteotomy surgical guide according to claim 2, characterized in that: The length adjustment mechanism (7) adjusts the length of the upper positioning guide plate (1), the middle positioning guide plate (2), and / or the lower positioning guide plate (3) by means of concave-convex snap fit, and / or sliding grooves, and / or threads.
4. The 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 periacetabular osteotomy surgical guide according to claim 1, characterized in that: A middle positioning mechanism (21) is provided on the middle positioning guide plate (2).
6. The periacetabular osteotomy surgical guide according to claim 1, characterized in that: The middle positioning guide plate (2) is also provided with a margin limiting mechanism (22).
7. The surgical guide for periacetabular osteotomy according to claim 6, characterized in that: The margin limiting mechanism (22) is provided with a scale (22-1).
8. The periacetabular osteotomy surgical guide according to claim 1, characterized in that: The upper end of the middle positioning guide plate (2) has a bending structure (23), and the bending structure (23) has an angle that matches the angle between the ilium and the ischium.
9. The surgical guide for periacetabular osteotomy according to claim 8, characterized in that: The angle of the bending structure (23) is 100° to 130°.
10. The surgical guide for periacetabular osteotomy according to claim 1, characterized in that: The upper positioning mechanism (11) is an upper positioning hole (11-1).
11. The surgical guide for periacetabular osteotomy according to claim 1, characterized in that: The lower positioning mechanism (31) is a lower positioning hole (31-1).
12. The surgical guide for periacetabular osteotomy according to claim 1, characterized in that: The upper connection mechanism (4) is a ball valve type connection mechanism.
13. The surgical guide for periacetabular osteotomy according to claim 1, characterized in that: The lower connection mechanism (5) is a ball valve type connection mechanism.
14. The surgical guide for periacetabular osteotomy according to claim 1, characterized in that: The angle between the middle positioning guide plate (2) and the lower positioning guide plate (3) is 90° to 130°.