Personalized acetabulum replacement guide plate

Abstract

The invention provides a personalized acetabulum replacement guide plate, and belongs to the technical field of medical instruments. A support column; the fixing column is fixedly connected to the upper end of the supporting column; the fixing hole is formed in the upper end of the fixing column; the internal thread is fixedly connected to the upper end of the supporting column; the supporting column is in threaded connection with the surface of the internal thread; the anti-loosening bolt is in threaded connection with the interior of the supporting column; through accurate butt joint of the inner side positioning assembly and the acetabulum positioning assembly, customized design can be carried out according to acetabulum anatomical features of each patient. By means of the customized design, the positioning accuracy of the acetabulum file equipment in the operation process is remarkably improved, so that acetabulum grinding is more accurate, the good matching degree and stability of implants are guaranteed, the success rate of the operation is increased, postoperative complications are reduced, and the rehabilitation process of a patient is accelerated.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a personalized acetabular replacement guide plate. Background Art

[0002] A personalized acetabular replacement guide is a medical device used during hip replacement surgery. This guide is customized according to the specific anatomical structure of the patient's acetabulum (the concave part of the hip joint) to help surgeons more accurately position and fix the artificial acetabular component. Traditional hip replacement surgery may rely on common surgical tools and experience to determine the position of the implant, while the personalized guide generates a 3D model through preoperative CT or MRI scan data to design a guide that conforms to the patient's unique anatomical structure. The use of this technology can improve surgical precision, reduce surgical time, and may improve the patient's postoperative recovery and the long-term effects of the implant.

[0003] In hip replacement surgery, accurate positioning of acetabular osteotomy is crucial to ensure the accuracy of the surgery. Currently, the commonly used osteotomy guides have problems such as insufficient positioning accuracy, complex operation, and lack of personalization. These problems may lead to unnecessary risks and complications in acetabular replacement surgery. Therefore, an improved personalized osteotomy guide is needed to improve the safety and effectiveness of the surgery. Summary of the invention

[0004] The purpose of the present invention is to provide a personalized acetabular replacement guide, which aims to solve the problem in the prior art that in order to ensure the accuracy of the operation in hip replacement surgery, accurate positioning of the acetabular osteotomy is crucial. Currently commonly used osteotomy guides have the problems of insufficient positioning accuracy, complex operation and lack of personalization. These problems may lead to unnecessary risks and complications in acetabular replacement surgery.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A personalized acetabular replacement guide, including:

[0007] Support columns;

[0008] A fixed column, the fixed column is fixedly connected to the upper end of the supporting column;

[0009] A fixing hole, the fixing hole being opened at the upper end of the fixing column;

[0010] An internal thread, wherein the internal thread is fixedly connected to the upper end of the support column;

[0011] A support column, wherein the support column is threadedly connected to the surface of the internal thread;

[0012] An anti-loosening bolt, wherein the anti-loosening bolt is threadedly connected in the support column;

[0013] A pin hole, the pin hole being formed on the circumferential surface of the support column;

[0014] A slide groove, wherein the slide groove is provided on the circumferential surface of the internal thread;

[0015] An inner positioning component, the inner positioning component is docked with the latch hole to achieve docking between the two;

[0016] The acetabulum positioning component is connected to the pin hole to facilitate the use of the acetabulum rasp device.

[0017] As a preferred solution of the present invention, the inner positioning assembly includes a first latch joint, a connecting rod and an inner positioning plate, the connecting rod is located on one side of the support column, the first latch joint is fixedly connected to one side end of the connecting rod, the inner positioning plate is fixedly connected to the other side of the connecting rod, and the first latch joint is located in the latch hole.

[0018] As a preferred solution of the present invention, the acetabulum positioning assembly includes a second pin joint, a connecting rod, a first handle and a first positioner, the first handle is located on one side of the support column, the second pin joint is fixedly connected to one side end of the first handle, the second pin joint is located in the pin hole, the connecting rod is fixedly connected to the circumferential surface of the first handle, and the first positioner is fixedly connected to the lower end of the connecting rod.

[0019] As a preferred solution of the present invention, an acetabular rasp is provided at the lower end of the support column, and a file is fixedly connected to one side end of the acetabular rasp.

[0020] As a preferred solution of the present invention, the second handle is arranged on one side of the support column, a telescopic rod is fixedly connected inside the second handle, an extended end of the telescopic rod is fixedly connected to a third latch joint, a sliding rod cavity is provided at one side end of the third latch joint, the telescopic rod is located in the sliding rod cavity, and a positioning groove is provided on the circumferential inner wall of the sliding rod cavity.

[0021] As a preferred solution of the present invention, a second positioner is fixedly connected to the circumferential surface of the second handle, and a first arc surface is formed at one side end of the second positioner.

[0022] As a preferred solution of the present invention, the second handle is arranged on one side of the support column, the circumferential surface of the second handle is fixedly connected to a limiting lever, one side end of the limiting lever is provided with a second arc surface, one side end of the second handle is fixedly connected to a test head, and the circumferential surface of the test head is provided with a through hole.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. Through the precise docking of the medial positioning component and the acetabular positioning component, a customized design can be made according to the anatomical characteristics of the acetabulum of each patient. This customized design significantly improves the positioning accuracy of the acetabular rasp device during surgery, making the acetabulum grinding more precise, ensuring the good matching and stability of the implant, improving the success rate of surgery, reducing the occurrence of postoperative complications, and accelerating the patient's recovery process.

[0025] 2. The second handle component in the guide plate design allows the doctor to flexibly adjust the position and angle of the guide plate according to the actual surgical needs. The use of the telescopic rod and the slide rod cavity enables the guide plate to be fine-tuned in three-dimensional space to adapt to various complex acetabular structures. In addition, the setting of the trial head and the file further enhances the testing and verification capabilities during the operation to ensure that the position of the implant is accurate. These features not only improve the flexibility of the operation, but also provide doctors with more operation options, which helps to reduce the difficulty of the operation and shorten the operation time.

[0026] 3. Through precise customization and efficient surgical operation, this guide effectively reduces some problems that may occur in traditional hip replacement surgery, such as dysfunction caused by improper implant position. Due to the improved accuracy of the surgery, the patient's hip joint function recovers faster, the pain is reduced, and the quality of life is significantly improved. In addition, due to the shortened operation time and reduced risk of complications, the patient's overall medical expenses will also decrease, thus bringing better economic and social benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 It is a schematic diagram of the structure of the outer positioning rod of the present invention;

[0029] Figure 2 It is a cutaway stereoscopic view of the outer positioning rod in the present invention;

[0030] Figure 3 It is a structural diagram of the inner positioning rod in the present invention;

[0031] Figure 4 It is a structural diagram of the acetabulum positioning rod in the present invention;

[0032] Figure 5 It is a structural schematic diagram of the latch rod in the present invention;

[0033] Figure 6 It is a structural schematic diagram of the head of the latch rod in the present invention;

[0034] Figure 7 It is a schematic structural diagram of the limiting rod in the present invention;

[0035] Figure 8 It is a schematic diagram of the relative positions of the acetabular rasp and the acetabular positioning rod in the present invention;

[0036] Fig. 9 It is a schematic diagram of the assembly steps of the inner and outer positioning rods in the present invention;

[0037] Fig.10 It is a schematic diagram of the assembly steps of the limit lever in the limit lever of the present invention.

[0038] In the figure: 1. support column; 2. latch hole; 3. internal thread; 4. anti-loosening bolt; 5. fixing hole; 6. fixing column; 7. external positioning plate; 8. slide groove; 9. first latch joint; 10. connecting rod; 11. internal positioning plate; 12. second latch joint; 13. connecting rod; 14. first handle; 15. first positioner; 16. second positioner; 17. first arc surface; 18. telescopic rod; 19. slide rod cavity; 20. positioning groove; 21. second handle; 22. limit lever; 23. second arc surface; 24. trial head; 25. through hole; 26. second handle; 27. third latch joint; 28. acetabular rasp; 29. ​​rasp. DETAILED DESCRIPTION

[0039] 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, not all of the embodiments. 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.

[0040] Example 1

[0041] See also Figure 1-Figure 10 , the present invention provides the following technical solutions:

[0042] A personalized acetabular replacement guide, including:

[0043] Support column 7;

[0044] A fixed column 6, the fixed column 6 is fixedly connected to the upper end of the supporting column 7;

[0045] A fixing hole 5, which is opened at the upper end of the fixing column 6;

[0046] Internal thread 3, internal thread 3 is fixedly connected to the upper end of support column 7;

[0047] A support column 1, wherein the support column 1 is threadedly connected to the surface of the internal thread 3;

[0048] Anti-loosening bolt 4, anti-loosening bolt 4 is threadedly connected in the support column 1;

[0049] A latch hole 2, which is formed on the circumferential surface of the support column 1;

[0050] A slide groove 8, which is provided on the circumferential surface of the internal thread 3;

[0051] The inner positioning component is connected with the latch hole 2 to achieve the connection between the two;

[0052] Acetabular positioning component, the acetabular positioning component is docked with the pin hole 2, which is convenient for the use of the acetabular rasp device;

[0053] The inner positioning assembly includes a first latch joint 9, a connecting rod 10 and an inner positioning plate 11. The connecting rod 10 is located on one side of the support column 7. The first latch joint 9 is fixedly connected to one side end of the connecting rod 10. The inner positioning plate 11 is fixedly connected to the other side of the connecting rod 10. The first latch joint 9 is located in the latch hole 2.

[0054] The acetabulum positioning assembly includes a second latch joint 12, a connecting rod 13, a first handle 14 and a first positioner 15, the first handle 14 is located at one side of the support column 7, the second latch joint 12 is fixedly connected to one side end of the first handle 14, the second latch joint 12 is located in the latch hole 2, the connecting rod 13 is fixedly connected to the circumferential surface of the first handle 14, and the first positioner 15 is fixedly connected to the lower end of the connecting rod 13;

[0055] An acetabular rasp 28 is provided at the lower end of the support column 1, and a rasp 29 is fixedly connected to one side end of the acetabular rasp 28;

[0056] The second handle 26 is arranged at one side of the support column 7, and the telescopic rod 18 is fixedly connected inside the second handle 26. The extended end of the telescopic rod 18 is fixedly connected to the third latch joint 27. A slide rod cavity 19 is opened at one side end of the third latch joint 27. The telescopic rod 18 is located in the slide rod cavity 19, and a positioning groove 20 is opened on the circumferential inner wall of the slide rod cavity 19.

[0057] The second handle 26 is fixedly connected to a second locator 16 on its circumferential surface, and a first arc surface 17 is formed on one side end of the second locator 16;

[0058] The second handle 21 is arranged on one side of the support column 7, and the circumferential surface of the second handle 21 is fixedly connected to the limit lever 22, and one side end of the limit lever 22 is provided with a second arc surface 23. One side end of the second handle 21 is fixedly connected to a test head 24, and the circumferential surface of the test head 24 is provided with a through hole 25.

[0059] In a specific embodiment of the present invention, the support column 7 is used as the basic structure of the device. The fixing components such as bolts are inserted into the fixing holes 5 in the fixing columns 6 to bind the support column 7. The fixing holes 5 are used to fix the position of the guide plate. The internal threads 3 are used to connect with the support column 1. The support column 1 can adjust the height as needed. The anti-loosening bolts 4 prevent the support column 1 from loosening with the internal threads 3. The pin holes 2 are used to connect with other components. The slide grooves 8 are used to cooperate with the sliding parts. The first pin joint 9 is inserted into the pin hole 2 to facilitate the docking of the connecting rod 10. The internal positioning plate 11 is used for precise positioning. Internal structure of acetabulum, second latch joint 12 is used for docking of connecting rod 13, first handle 14 is located at one side of supporting column 7, first positioner 15 is used for assisting in positioning acetabular rasp device, acetabular rasp 28 is used for grinding acetabulum, rasp 29 has a cutting edge on its surface, and can rasp bone bed when rotating, so as to realize acetabular grinding and rasp, second handle 26 is located at one side of supporting column 7, comprises telescopic rod 18 and third latch joint 27, and is used for adjusting length and position, telescopic rod 18 is telescopic, and length is adjusted, and third latch joint 27 can be inserted into latch hole 2, and is used for docking In use, the slide rod cavity 19 is used to accommodate the telescopic rod 18, the positioning groove 20 is used for positioning, the second positioner 16 has a first arc surface 17 on one side end for auxiliary positioning, and the first arc surface 17 matches the second arc surface 23 to maintain the stability of the second handle 21, and the limit lever 22 has a second arc surface 23 on one side end for limiting the position, the test head 24 is used to test the implant position, and the through hole 25 is used for auxiliary tool positioning or testing. By extracting the surface design of the bone model, it has a certain thickness and is completely in line with the bone surface, which enhances the accuracy of positioning. , while reducing material consumption, the lateral positioning rod is a split structure, and the height can be adjusted as needed during the operation. After the height is adjusted in place through the threaded structure, the anti-loosening bolt is screwed in and embedded in the adjusting screw slot to fix the height. The support column: is located on the outer positioning plate, and its axis is in the same plane as the axis of the latch rod and the limit rod. The lateral positioning plate is personalized according to the surface area of ​​the patient's acetabular bone model and is produced by 3D printing. The inner positioning plate: is designed as a positioning plate with a certain thickness, fits the surface of the acetabulum, and is connected to an integrated structure through a connecting rod and a latch joint. The cross-section of the latch joint is polygonal, and it is docked with the latch hole of the lateral positioning rod. The latch joint is used to dock with the latch hole on the lateral positioning rod to ensure precise positioning. The medial positioning plate is personalized according to the surface area of ​​the patient's acetabular bone model. The first handle 14 adopts a cylindrical structure. The latch joint has the same structure as the latch joint on the medial positioning rod and is used to dock with the latch hole 2 on the lateral positioning rod. The locator is designed to have a cylindrical structure with a certain thickness, and its cylindrical axis is consistent with the normal direction of the preset acetabular cup mouth. Its arc surface is used to fit the acetabular rasp holder connecting rod to ensure the position of the acetabulum during osteotomy and acetabulum grinding. The locator forms an integrated rigid structure through the connecting rod and the handle. The trial head 24 has a hemispherical structure with an irregular through hole.The handle is a cylinder, rigidly connected to the test head, with its axis perpendicular to the plane of the test head and in the same plane as the outer positioning rod support column and the latch rod handle. The limit stopper has an arc structure, which is used to dock with the limiter on the latch rod to indicate the position reached by the test head. At the same time, in addition to the personalized design of a disposable structure, the connection position of the first handle 14 and the test head 24 can be designed as a telescopic structure to meet the requirements of height adjustment of the limit rod produced by machining, with good personalized adaptability and easy operation, which can effectively improve the accuracy and efficiency of hip replacement surgery.

[0060] The working principle and use process of the present invention are as follows: the height of the entire guide plate can be adjusted through the threaded connection between the support column 1 and the internal thread 3; the stability of the connection part is ensured by the anti-loosening bolt 4; the medial positioning component and the acetabulum positioning component are connected with the corresponding pin joint through the pin hole 2 to achieve precise positioning; the second handle component provides additional positioning and adjustment functions to meet the specific needs of different patients. When in use, the support column 7 is first installed and stabilized, and the first pin joint 9 is inserted into the pin hole 2 to measure the position, then the connecting rod 10 is taken out, and the second pin joint 12 is inserted into the pin hole 2. The acetabulum rasp 28 and the file 29 are used for filing and grinding, and then the two are removed, and the third pin joint 27 on one side of the second handle 26 is inserted into the pin hole 2, and the trial head 24 is placed in the filed hole, and the measurement can be performed.

[0061] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. 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. A personalized acetabular replacement guide, characterized in that: include: Support column (7); A fixed column (6), wherein the fixed column (6) is fixedly connected to the upper end of the supporting column (7); A fixing hole (5), wherein the fixing hole (5) is formed at the upper end of the fixing column (6); An internal thread (3), wherein the internal thread (3) is fixedly connected to the upper end of the support column (7); A support column (1), wherein the support column (1) is threadedly connected to the surface of the internal thread (3); An anti-loosening bolt (4), wherein the anti-loosening bolt (4) is threadedly connected to the support column (1); A pin hole (2), wherein the pin hole (2) is formed on the circumferential surface of the support column (1); A slide groove (8), wherein the slide groove (8) is formed on the circumferential surface of the internal thread (3); An inner positioning component, the inner positioning component is docked with the latch hole (2) to achieve docking between the two; An acetabulum positioning component is connected to the pin hole (2) to facilitate the use of the acetabulum rasp device.

2. The personalized acetabular replacement guide according to claim 1, characterized in that: The inner positioning assembly comprises a first latch joint (9), a connecting rod (10) and an inner positioning plate (11); the connecting rod (10) is located on one side of the support column (7); the first latch joint (9) is fixedly connected to one side end of the connecting rod (10); the inner positioning plate (11) is fixedly connected to the other side of the connecting rod (10); and the first latch joint (9) is located in the latch hole (2).

3. The personalized acetabular replacement guide according to claim 2, characterized in that: The acetabulum positioning assembly comprises a second latch joint (12), a connecting rod (13), a first handle (14) and a first positioner (15), wherein the first handle (14) is located on one side of the support column (7), the second latch joint (12) is fixedly connected to one side end of the first handle (14), the second latch joint (12) is located in the latch hole (2), the connecting rod (13) is fixedly connected to the circumferential surface of the first handle (14), and the first positioner (15) is fixedly connected to the lower end of the connecting rod (13).

4. The personalized acetabular replacement guide according to claim 3, characterized in that: An acetabular rasp (28) is provided at the lower end of the first handle (14), and a rasp (29) is fixedly connected to one side end of the acetabular rasp (28).

5. The personalized acetabular replacement guide according to claim 4, characterized in that: The second handle (26) is arranged on one side of the support column (7), and a telescopic rod (18) is fixedly connected inside the second handle (26). The extended end of the telescopic rod (18) is fixedly connected to a third latch joint (27), and a slide rod cavity (19) is provided at one side end of the third latch joint (27). The telescopic rod (18) is located in the slide rod cavity (19), and a positioning groove (20) is provided on the circumferential inner wall of the slide rod cavity (19).

6. The personalized acetabular replacement guide according to claim 5, characterized in that: The circumferential surface of the second handle (26) is fixedly connected to a second positioner (16), and a first arc surface (17) is formed at one side end of the second positioner (16).

7. The personalized acetabular replacement guide according to claim 6, characterized in that: The second handle (21) is arranged on one side of the support column (7); the circumferential surface of the second handle (21) is fixedly connected to a limit lever (22); one side end of the limit lever (22) is provided with a second arc surface (23); one side end of the second handle (21) is fixedly connected to a test head (24); the circumferential surface of the test head (24) is provided with a through hole (25).

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