An individualized acetabular replacement guide

Abstract

The application provides a personalized acetabulum replacement guide plate, and belongs to the technical field of medical devices.The personalized acetabulum replacement guide plate comprises a support column, a fixed column, a fixed hole, an internal thread, a support column, and a locking bolt.The fixed column is fixedly connected to the upper end of the support column.The fixed hole is provided in the upper end of the fixed column.The internal thread is fixedly connected to the upper end of the support column.The support column is threadedly connected to the surface of the internal thread.The locking bolt is threadedly connected in the support column.The accurate butt joint of the inboard positioning assembly and the acetabulum positioning assembly can be used for customized design according to the anatomical characteristics of the acetabulum of each patient.The customized design significantly improves the positioning accuracy of the acetabulum reamer device during the operation process, so that the acetabulum grinding is more accurate, the good matching degree and stability of the implant are ensured, and the success rate of the operation is improved, the occurrence of postoperative complications is reduced, and the rehabilitation process of the patient is accelerated, which has a positive influence.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of medical devices, specifically relates to a personalized acetabular replacement guide plate. BACKGROUND

[0002] The personalized acetabular replacement guide plate is a medical device used in hip replacement surgery. This guide plate is customized according to the specific anatomical structure of the patient's acetabulum (the concave part of the hip joint) to help the surgeon more accurately position and fix the artificial acetabular component. Traditional hip replacement surgery may rely on general surgical tools and experience to determine the position of the implant, while the personalized guide plate is generated by preoperative CT or MRI scan data to generate a 3D model, and then designed to meet the unique anatomical structure of the patient. The use of this technology can improve surgical accuracy, reduce surgical time, and may improve patient postoperative recovery and long-term effects of the implant.

[0003] In hip replacement surgery, accurate positioning of the acetabular osteotomy is crucial to ensure the accuracy of the operation. The commonly used osteotomy guide plate has the problems of insufficient positioning accuracy, complex operation and insufficient personalization. These problems may lead to unnecessary risks and complications in acetabular replacement surgery. Therefore, an improved personalized osteotomy guide plate is needed to improve the safety and effectiveness of the operation. SUMMARY

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

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0006] A personalized acetabular replacement guide plate, comprising:

[0007] An outer positioning plate;

[0008] A fixed column fixedly connected to the upper end of the outer positioning plate;

[0009] A fixed hole provided in the upper end of the fixed column;

[0010] An internal thread fixedly connected to the upper end of the outer positioning plate;

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

[0012] A locking bolt threadedly connected in the support column;

[0013] The latch hole is arranged on the circumferential surface of the supporting column.

[0014] The sliding groove is arranged on the circumferential surface of the internal thread.

[0015] The inner side positioning assembly is connected with the latch hole to realize the connection of the two.

[0016] The acetabulum positioning assembly is connected with the latch hole to facilitate the use of the acetabulum reamer device.

[0017] As a preferred scheme of the present application, the inner side positioning assembly comprises a first latch joint, a connecting rod and an inner positioning plate, the connecting rod is located on one side of the outer positioning plate, 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 scheme of the present application, the acetabulum positioning assembly comprises a second latch joint, a connecting rod, a first handle and a first positioner, the first handle is located on one side of the outer positioning plate, the second latch joint is fixedly connected to one side end of the first handle, the second latch joint is located in the latch 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 scheme of the present application, the lower end of the supporting column is provided with an acetabulum reamer, and one side end of the acetabulum reamer is fixedly connected with a reamer knife.

[0020] As a preferred scheme of the present application, the third handle is arranged on one side of the outer positioning plate, a telescopic rod is fixedly connected in the third handle, a third latch joint is fixedly connected to the elongated end of the telescopic rod, a sliding rod cavity is arranged on one side end of the third latch joint, the telescopic rod is located in the sliding rod cavity, a positioning groove is arranged on the circumferential inner wall of the sliding rod cavity, the third latch joint is inserted into the latch hole for connection, the sliding rod cavity is used for accommodating the telescopic rod, and the positioning groove is used for positioning.

[0021] As a preferred scheme of the present application, a second positioner is fixedly connected to the circumferential surface of the third handle, and a first circular arc surface is arranged on one side end of the second positioner.

[0022] As a preferred scheme of the present application, the second handle is arranged on one side of the outer positioning plate, a limiting stop rod is fixedly connected to the circumferential surface of the second handle, a second circular arc surface is arranged on one side end of the limiting stop rod, a test head is fixedly connected to one side end of the second handle, a through hole is arranged on the circumferential surface of the test head, and the first circular arc surface is matched with the second circular arc surface.

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

[0024] 1. By precise docking of the medial positioning assembly and the acetabular positioning assembly, customized design can be made according to the anatomical characteristics of each patient's acetabulum. This customized design significantly improves the positioning accuracy of the acetabular reamer device during surgery, making the acetabular grinding more precise, ensuring good matching degree and stability of the implant, and improving the success rate of surgery, reducing postoperative complications and speeding up the rehabilitation process of patients.

[0025] 2. The second handle assembly in the guide plate design allows the doctor to flexibly adjust the position and angle of the guide plate according to actual surgical needs. The use of telescopic rods and slide rod cavities allows the guide plate to be fine-tuned in three-dimensional space to adapt to various complex acetabular structures. In addition, the provision of test heads and reamers further enhances the testing and verification capabilities during surgery, ensuring the accurate positioning of the implant. These features not only improve the flexibility of surgery, but also provide doctors with more operation options, which helps to reduce the difficulty of surgery and shorten the surgery time.

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

[0027] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, together with the embodiments of the present application, to explain the present application, and do not constitute a limitation on the present application. In the drawings:

[0028] Figure 1 is a schematic view of the lateral positioning rod structure of the present application;

[0029] Figure 2 is a cross-sectional perspective view of the lateral positioning rod in the present application;

[0030] Figure 3 is a structural view of the medial positioning rod in the present application;

[0031] Figure 4 is a structural view of the acetabular positioning rod in the present application;

[0032] Figure 5 is a schematic view of the structure of the plug-in rod in the present application;

[0033] Figure 6The structure diagram of the plug rod head in the application is shown in the figure.

[0034] Figure 7 The structure diagram of the limiting rod in the application is shown in the figure.

[0035] Figure 8 The relative position diagram of the acetabulum file and the acetabulum positioning rod in the application is shown in the figure.

[0036] Figure 9 The assembly step diagram of the inner and outer positioning rods in the application is shown in the figure.

[0037] Figure 10 The assembly step diagram of the limiting rod in the application is shown in the figure.

[0038] In the figure: 1, support column; 2, plug hole; 3, internal thread; 4, locking bolt; 5, fixing hole; 6, fixed column; 7, outer positioning plate; 8, sliding groove; 9, first plug joint; 10, connecting rod; 11, inner positioning plate; 12, second plug joint; 13, connecting rod; 14, first handle; 15, first positioner; 16, second positioner; 17, first circular surface; 18, telescopic rod; 19, sliding rod cavity; 20, positioning groove; 21, second handle; 22, limiting rod; 23, second circular surface; 24, trial head; 25, through hole; 26, third handle; 27, third plug joint; 28, acetabulum file; 29, file. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0040] Embodiment 1

[0041] Please refer to Figures 1-10 The application provides the following technical solutions:

[0042] A personalized acetabulum replacement guide plate comprises:

[0043] The outer positioning plate 7;

[0044] The fixed column 6 is fixedly connected to the upper end of the outer positioning plate 7.

[0045] The fixing hole 5 is arranged at the upper end of the fixed column 6.

[0046] The internal thread 3 is fixedly connected to the upper end of the outer positioning plate 7.

[0047] Supporting column 1, supporting column 1 is threadedly connected to the surface of internal thread 3;

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

[0049] Bolt hole 2, bolt hole 2 is opened on the circumferential surface of supporting column 1;

[0050] Chute 8, chute 8 is opened on the circumferential surface of internal thread 3;

[0051] Inboard positioning assembly, inboard positioning assembly is butted with bolt hole 2, realizes the butt joint of both;

[0052] Acetabulum positioning assembly, acetabulum positioning assembly is butted with bolt hole 2, facilitates acetabulum reamer equipment use;

[0053] Inboard positioning assembly includes first bolt joint 9, connecting rod 10 and inner positioning plate 11, connecting rod 10 is located at one side of outer positioning plate 7, first bolt joint 9 is fixedly connected to one side end of connecting rod 10, inner positioning plate 11 is fixedly connected to the other side of connecting rod 10, and first bolt joint 9 is located in bolt hole 2;

[0054] Acetabulum positioning assembly includes second bolt joint 12, connecting rod 13, first handle 14 and first positioner 15, first handle 14 is located at one side of outer positioning plate 7, second bolt joint 12 is fixedly connected to one side end of first handle 14, second bolt joint 12 is located in bolt hole 2, connecting rod 13 is fixedly connected to the circumferential surface of first handle 14, and first positioner 15 is fixedly connected to the lower end of connecting rod 13;

[0055] The lower end of supporting column 1 is provided with acetabulum reamer 28, and one side end of acetabulum reamer 28 is fixedly connected with reamer 29;

[0056] Third handle 26 is provided at one side of outer positioning plate 7, third handle 26 is fixedly connected with telescopic rod 18 in the inside, the elongated end of telescopic rod 18 is fixedly connected with third bolt joint 27, one side end of third bolt joint 27 is provided with slide rod cavity 19, telescopic rod 18 is located in slide rod cavity 19, and the circumferential inner wall of slide rod cavity 19 is provided with positioning groove 20;

[0057] The circumferential surface of third handle 26 is fixedly connected with second positioner 16, and one side end of second positioner 16 is provided with first arc surface 17;

[0058] Second handle 21 is provided at one side of outer positioning plate 7, the circumferential surface of second handle 21 is fixedly connected with limiting stop lever 22, one side end of limiting stop lever 22 is provided with second arc surface 23, one side end of second handle 21 is fixedly connected with test head 24, and the circumferential surface of test head 24 is provided with through hole 25.

[0059] In the specific embodiments of the application, the outer positioning plate 7 is used as the device base structure, the fixed components such as bolts are inserted into the fixed holes 5 in the fixed column 6, the outer positioning plate 7 is bound, the fixed holes 5 are used to fix the position of the guide plate, the inner threads 3 are used to connect with the support column 1, the height of the support column 1 can be adjusted as needed, the lock bolt 4 prevents the support column 1 from loosening with the inner threads 3, the bolt hole 2 is used to connect with other components, the sliding groove 8 is used to cooperate with the sliding component, the first bolt joint 9 is inserted into the bolt hole 2, which facilitates the butt joint of the connecting rod 10, the inner positioning plate 11 is used for precise positioning of the internal structure of the acetabulum, the second bolt joint 12 is used for butt joint of the connecting rod 13, the first handle 14 is located on one side of the outer positioning plate 7, the first positioner 15 is used to assist in positioning the acetabular reamer device, the acetabular reamer 28 is used to grind the acetabulum, the surface of the reamer 29 is sharp, and when it rotates, it can grind the bone bed, thereby achieving the grinding of the acetabulum, the third handle 26 is provided on one side of the outer positioning plate 7, which includes a telescopic rod 18 and a third bolt joint 27, and is used to adjust the length and position, the telescopic rod 18 is telescopic and can adjust the length, the third bolt joint 27 can be inserted into the bolt hole 2 and used for butt joint, the sliding rod cavity 19 is used to accommodate the telescopic rod 18, the positioning groove 20 is used for positioning, the first arc surface 17 is provided on one side end of the second positioner 16, which is used to assist in positioning, and the first arc surface 17 matches the second arc surface 23, which can keep the second handle 21 stable, the second arc surface 23 is provided on one side end of the limiting stopper 22, which is used to limit the position, the trial head 24 is used to test the position of the implant, the through hole 25 is used to assist in positioning or testing, the surface of the bone model is designed by extracting the bone model, has a certain thickness, completely matches the surface of the bone, enhances the accuracy of positioning, and reduces material consumption, the outer positioning rod is a split structure, the height can be adjusted during the operation as needed, the height is adjusted to the right position through the thread structure, and then the lock bolt is screwed in, the height is fixed by embedding the adjusting screw sliding groove, the support column is located on the outer positioning plate, the axis thereof is located in the same plane as the axes of the bolt rod and the limiting rod, the outer positioning plate is individually designed according to the surface area of the acetabular bone model of the patient, and is produced by a 3D printing method, the inner positioning plate is designed as a positioning plate with a certain thickness, matches the surface of the acetabular fossa, and is connected into an integrated structure through the connecting rod and the bolt joint, the cross section of the bolt joint is polygonal, and is butt jointed with the bolt hole of the outer positioning rod, the bolt joint is used to be butt jointed with the bolt hole on the outer positioning rod, and ensures accurate positioning, the inner positioning plate is individually designed according to the surface area of the acetabular bone model of the patient, the first handle 14 adopts a cylindrical structure, the bolt joint structure on the inner positioning rod is the same as that of the outer positioning rod, and is used to be butt jointed with the bolt hole 2 on the outer positioning rod, the positioner is designed as a cylindrical structure with a certain thickness, the cylindrical axis thereof is consistent with the preset acetabular cup opening normal direction, and the arc surface thereof is used to match the acetabular reamer holder connecting rod, thereby ensuring the position during acetabular osteotomy and acetabular grinding, the positioner forms an integrated rigid structure through the connecting rod and the handle, the trial head 24 has a hemispherical structure and an irregular through hole.The handle is a cylinder, and the test head is rigidly connected, the axis is perpendicular to the test head plane, and the outside positioning rod support column, the plug-in rod handle are in the same plane. The limiting stop lever has a circular arc structure, which is used for butt joint with the limiter on the plug-in rod, indicating the position reached by the test head. In addition to the one-time use structure of personalized design, the first handle 14 and the test head 24 connection position can be designed as a telescopic structure to meet the height adjustment requirement of the limiting rod produced by machining mode, has good personalized adaptability and operation convenience, can effectively improve the precision and efficiency of hip replacement surgery.

[0060] The working principle and use process of the present application: through the threaded connection between the support column 1 and the internal thread 3, the height of the whole guide plate can be adjusted; the anti-loose bolt 4 ensures the stability of the connection part; the inner positioning assembly and the acetabular positioning assembly are connected through the plug-in hole 2 and the corresponding plug-in joint, and precise positioning is realized; the second handle assembly provides additional positioning and adjustment function to adapt to the specific needs of different patients. When in use, first install the outer positioning plate 7 stably, then measure the position by inserting the first plug-in joint 9 into the plug-in hole 2, take out the connecting rod 10, insert the second plug-in joint 12 into the plug-in hole 2, use the acetabular reamer 28 and the reamer 29 in cooperation, then take them down, insert the third plug-in joint 27 on one side of the third handle 26 into the plug-in hole 2, put the test head 24 into the reamed hole, and then measure.

[0061] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing detailed description of the present application is made with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An individualized acetabular replacement guide, characterized in that: Include: The outer positioning plate (7); Fixed column (6), the fixed column (6) is fixedly connected to the upper end of the outer positioning plate (7); Fixed hole (5), the fixed hole (5) is opened in the upper end of the fixed column (6); Internal thread (3), the internal thread (3) is fixedly connected to the upper end of the outer positioning plate (7); Support column (1), the support column (1) is threadedly connected to the surface of the internal thread (3); Anti-loosening bolt (4), the anti-loosening bolt (4) is threadedly connected in the support column (1); The bolt hole (2) is opened in the circumferential surface of the support column (1); The sliding groove (8) is opened in the circumferential surface of the internal thread (3); The inner side positioning assembly is butted with the bolt hole (2), realizing the butt joint of the two; The acetabulum positioning assembly is butted with the bolt hole (2), facilitating the use of the acetabulum reamer equipment; The third handle (26) is arranged on one side of the outer positioning plate (7), the third handle (26) is fixedly connected with the telescopic rod (18) in the third handle (26), the telescopic rod (18) is fixedly connected with the third bolt joint (27) at the elongated end of the telescopic rod (18), the third bolt joint (27) is arranged with the sliding rod cavity (19) at one side end of the third bolt joint (27), the telescopic rod (18) is located in the sliding rod cavity (19), the circumferential inner wall of the sliding rod cavity (19) is arranged with the positioning groove (20), the third bolt joint (27) is inserted into the bolt hole (2), and the third bolt joint (27) is used for butt joint, the sliding rod cavity (19) is used for accommodating the telescopic rod (18), and the positioning groove (20) is used for positioning; The circumferential surface of the third handle (26) is fixedly connected with the second positioner (16), and the first circular surface (17) is arranged at one side end of the second positioner (16); The second handle (21) is arranged on one side of the outer positioning plate (7), the circumferential surface of the second handle (21) is fixedly connected with the limiting rod (22), the second circular surface (23) is arranged at one side end of the limiting rod (22), one side end of the second handle (21) is fixedly connected with the test head (24), the circumferential surface of the test head (24) is arranged with the through hole (25), and the first circular surface (17) and the second circular surface (23) are matched.

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

3. The personalized acetabular replacement guide of claim 2, wherein: The acetabulum positioning assembly comprises a second pin joint (12), a connecting rod (13), a first handle (14) and a first positioner (15), the first handle (14) is located on one side of the outer positioning plate (7), the second pin joint (12) is fixedly connected to one side end of the first handle (14), the second pin joint (12) is located in the pin 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 of claim 3, wherein: The lower end of the first handle (14) is provided with an acetabulum file (28), and one side end of the acetabulum file (28) is fixedly connected with a file knife (29).

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