3D printing long bone osteotomy guide
The long bone osteotomy guide plate manufactured using 3D printing technology solves the problems of unstable fixation and inflexible operation of existing guide plates, achieving precise positioning and efficient osteotomy, and improving the safety and success rate of the surgery.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG UNIV
- Filing Date
- 2025-02-27
- Publication Date
- 2026-07-21
Smart Images
Figure CN224523181U_ABST
Abstract
Description
Technical Field
[0001] This application relates to a 3D-printed long bone osteotomy guide plate, belonging to the field of orthopedic medical device technology. Background Technology
[0002] Benign bone tumors are relatively common in clinical practice. When a tumor grows near a joint in a long bone, it can affect joint movement, leading to long bone deformity. This deformity can worsen, causing osteoarthritis and impacting the patient's daily life. Currently, treatment options for long bone deformities are limited. Traditional osteotomy correction relies on the surgeon's rough measurement of the deformity from X-ray images and depends on their personal experience. This process is time-consuming and labor-intensive, and it is difficult to control the angle of osteotomy correction, which can easily cause joint subluxation or even damage to blood vessels and nerves.
[0003] Chinese utility model patent CN219557465U discloses a long tubular bone osteotomy guide plate, including an anatomical positioning part that can conform to the surface of a long tubular target bone and an osteotomy functional part fixedly connected to the anatomical positioning part. The anatomical positioning part has multiple fixing holes, each into which a fixing pin can be inserted to fix the anatomical positioning part to the target bone. The osteotomy functional part has an osteotomy guide groove into which an oscillating saw blade can be inserted and which is correspondingly positioned to the osteotomy line. The osteotomy guide groove is angled to the target bone and restricts the position of the oscillating saw blade, allowing it to move back and forth only in the direction extending from the osteotomy guide groove. This long tubular bone osteotomy guide plate can improve the accuracy of osteotomy. However, this guide plate fixation method relies on fixing pins, which is not only complex to assemble, but also prevents the guide plate from fully conforming to the irregular surface of the tumor, resulting in insufficient stability. Furthermore, the saw blade is restricted to reciprocating motion within the guide groove, making operation less flexible and thus limiting osteotomy accuracy. Utility Model Content
[0004] To address the aforementioned issues, this application proposes a 3D-printed long bone osteotomy guide plate. The tumor fixation part conforms to the irregular shape of the tumor surface, and the edge of the osteotomy guide part is designed according to the osteotomy line direction, so that the guide plate is stable and fits into the bone and tumor surface, avoiding slippage or misalignment. This provides clinicians with more precise surgical positioning. The structure is simple, the operation is convenient, and it is suitable for large-scale promotion and application.
[0005] This utility model provides the following technical solution:
[0006] A 3D-printed long bone osteotomy guide plate includes a guide plate body, the guide plate body including a tumor fixation part, an osteotomy guide part and an intermediate connecting part, the tumor fixation part and the osteotomy guide part being fixedly connected by the intermediate connecting part;
[0007] The tumor fixation part is spherical, and the inner side of the tumor fixation part is in contact with the outer surface of the long bone tumor. The osteotomy guide part is engaged at the junction of the long bone and the long bone tumor, and the long bone tumor is removed along the side of the osteotomy guide part away from the tumor fixation part.
[0008] Optionally, one end of the osteotomy guide extends into a bent portion.
[0009] Optionally, the bend is located at the top of the long bone tumor, and the curvature of the connection between the long bone and the long bone tumor matches the curvature of the bend.
[0010] Optionally, a gap is provided between the tumor fixation part and the osteotomy guide part.
[0011] Optionally, the intermediate connecting portion protrudes along the side away from the long bone tumor.
[0012] Optionally, the tumor fixation part, the osteotomy guide part, and the intermediate connecting part are integrally formed.
[0013] Optionally, the thickness of the tumor fixation part, the osteotomy guide part, and the intermediate connecting part is 2-5 mm.
[0014] Optionally, the tumor fixation part, the osteotomy guide part, and the intermediate connecting part are all made of nylon.
[0015] The beneficial effects that this application may produce include, but are not limited to:
[0016] The 3D-printed long bone osteotomy guide provided in this application determines the optimal shape of the guide by extracting the 3D shape of the tumor surface and the anatomical features of the surgical area from the patient's high-resolution CT images. The tumor fixation part of the guide is intelligently designed with an application area based on the curvature of the tumor surface, ensuring smooth adhesion to the tumor surface. The guiding design of the osteotomy guide part ensures stable insertion of the guide onto the bone and tumor surface, preventing slippage and providing clinicians with more precise surgical positioning. The surgeon can easily and quickly install the guide by holding the middle connecting part, ensuring high accuracy. This 3D-printed long bone osteotomy guide has a simple structure, is easy to manufacture and install, and allows for flexible operation by the surgeon, thus improving surgical efficiency and precision. Attached Figure Description
[0017] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:
[0018] Figure 1 This is a schematic diagram of the structure of the 3D-printed long bone osteotomy guide plate involved in the embodiments of this application;
[0019] Figure 2This is a rear view of the 3D-printed long bone osteotomy guide plate involved in an embodiment of this application;
[0020] Figure 3 This is a side view of the 3D-printed long bone osteotomy guide plate involved in the embodiments of this application;
[0021] Figure 4 This is a schematic diagram of the structure of the 3D-printed long bone osteotomy guide plate involved in the embodiments of this application applied to long bone tumors;
[0022] List of components and reference numerals:
[0023] 1. Tumor fixation part, 2. Osteotomy guide part, 3. Intermediate connection part, 4. Bending part, 5. Gap, 6. Long bone, 7. Tumor. Detailed Implementation
[0024] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.
[0025] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0026] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.
[0027] Furthermore, it should be understood in the description of this application that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.
[0029] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0030] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.
[0031] Reference Figure 1-4 This paper introduces a 3D-printed long bone osteotomy guide plate according to this application.
[0032] The 3D-printed long bone osteotomy guide plate according to this embodiment includes a guide plate body, which includes a tumor fixation part 1, an osteotomy guide part 2, and an intermediate connecting part 3. The tumor fixation part 1 and the osteotomy guide part 2 are fixedly connected by the intermediate connecting part 3. The setting of the tumor fixation part 1 and the intermediate connecting part 3 enables the guide plate to be stably fixed on the long bone tumor during the operation, and it is not easy to fall off. The osteotomy guide part 2 makes it easier for the doctor to perform positioning and osteotomy operations during the operation, reducing iatrogenic bone loss.
[0033] The tumor fixation part 1 is spherical, and its inner side fits closely to the outer surface of the long bone tumor, allowing it to be tightly fixed to the outer surface of the long bone tumor. This helps stabilize the guide plate during surgery and prevents it from slipping. The osteotomy guide part 2 is engaged at the junction of the long bone 6 and the long bone tumor. The long bone tumor is removed along the side of the osteotomy guide part 2 away from the tumor fixation part 1, which stabilizes the guide plate and fits into the surface of the bone and tumor 7, avoiding misalignment and providing clinicians with a more precise osteotomy position and direction.
[0034] This 3D-printed long bone osteotomy guide plate is a customized product, reverse-engineered based on the patient's anatomical data and printed using additive manufacturing technology. It has high matching accuracy, reduces unnecessary surgical trauma, improves the success rate of surgery, and reduces complications.
[0035] In one implementation, a bent portion 4 extends from one end of the osteotomy guide portion 2. The bent portion 4 fits tightly against the surface of the tumor 7 to further fix the guide plate, prevent intraoperative displacement, improve surgical safety, and at the same time make it easier for the surgeon to identify the osteotomy direction, reduce intraoperative adjustment time, and simplify the operation process.
[0036] In one implementation, the bend 4 is located at the top of the long bone tumor, and the curvature of the connection between the long bone 6 and the long bone tumor matches the curvature of the bend 4, ensuring that the guide plate fits tightly against the surface of the tumor 7, improving intraoperative stability, and thus providing more precise guidance for osteotomy.
[0037] As one implementation, the intermediate connecting part 3 is provided to protrude along the side away from the long bone tumor, so that the clinician can hold the intermediate connecting part 3 to install the guide plate, thereby making the guide plate stably fitted with the bone and tumor 7 surface.
[0038] As one implementation method, a gap 5 is provided between the tumor fixation part 1 and the osteotomy guide part 2, which not only facilitates the installation of the guide plate, but also helps to observe the tissue around the long bone 6 and the tumor 7 during the operation, thereby reducing surgical risks.
[0039] As one implementation method, the tumor fixation part 1, the osteotomy guide part 2, and the intermediate connecting part 3 are integrally molded, which reduces the manufacturing difficulty and assembly complexity, reduces the risk caused by loosening or failure of the connecting parts, ensures the stability of the guide plate during the operation, and improves the safety and reliability of the operation.
[0040] In one implementation, the thickness of the tumor fixation part 1, the osteotomy guide part 2, and the intermediate connecting part 3 is 2-5mm, preferably 3mm, which balances the weight and structural strength of the guide plate, facilitating surgical operation while reducing the burden on the patient.
[0041] As one implementation method, the tumor fixation part 1, the osteotomy guide part 2, and the intermediate connecting part 3 are all made of nylon, which has good biocompatibility and reduces the risk of rejection and inflammation.
[0042] The working principle of the 3D-printed long bone osteotomy guide plate according to this embodiment is as follows:
[0043] The clinician holds the intermediate connecting part 3 and places the tumor fixation part 1 over the surface of the long bone tumor. The osteotomy guide part 2 is engaged at the junction of the long bone 6 and the long bone tumor. Then, the long bone tumor is removed along the side of the osteotomy guide part 2 away from the tumor fixation part 1. This procedure is highly precise and stable, reducing errors during surgery and improving the success rate.
[0044] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.
[0045] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.
Claims
1. A 3D-printed long bone osteotomy guide plate, characterized in that, The guide plate includes a main body, which includes a tumor fixation part, an osteotomy guide part, and an intermediate connecting part. The tumor fixation part and the osteotomy guide part are fixedly connected through the intermediate connecting part. The tumor fixation part is spherical, and the inner side of the tumor fixation part is in contact with the outer surface of the long bone tumor. The osteotomy guide part is engaged at the junction of the long bone and the long bone tumor, and the long bone tumor is removed along the side of the osteotomy guide part away from the tumor fixation part.
2. The 3D-printed long bone osteotomy guide plate according to claim 1, characterized in that, One end of the osteotomy guide extends into a bent portion.
3. The 3D-printed long bone osteotomy guide plate according to claim 2, characterized in that, The bend is located at the top of the long bone tumor, and the curvature of the connection between the long bone and the long bone tumor matches the curvature of the bend.
4. The 3D-printed long bone osteotomy guide plate according to claim 1, characterized in that, A gap is provided between the tumor fixation part and the osteotomy guide part.
5. The 3D-printed long bone osteotomy guide plate according to claim 1, characterized in that, The intermediate connecting portion protrudes along the side away from the long bone tumor.
6. The 3D-printed long bone osteotomy guide plate according to claim 1, characterized in that, The tumor fixation part, osteotomy guide part, and intermediate connecting part are integrally formed.
7. The 3D-printed long bone osteotomy guide plate according to claim 1, characterized in that, The thickness of the tumor fixation part, the osteotomy guide part, and the intermediate connecting part is 2-5mm.
8. The 3D-printed long bone osteotomy guide plate according to claim 1, characterized in that, The tumor fixation part, osteotomy guide part, and intermediate connecting part are all made of nylon.