3D printing personalized shoulder blade implant based on Fischer-Koch porous structure

Abstract

A 3D printing personalized scapula implant based on a Fischer-Koch porous structure comprises a scapula implant body, the scapula implant body is in a scapula defect shape, the scapula implant body is composed of a scapula implant body fusion face close to a scapula excision part and a scapula implant body, the scapula implant body is of a porous structure, and the scapula implant body fusion face is connected with the scapula implant body fusion face. The porous structure is preferably a Fischer-Koch structure, the porosity of the porous structure is 62%, the corresponding relative density is 1.7 g / cm < 3 >, the shoulder blade implant adopts a conformal design technology, accurate customization can be carried out according to the actual defect shape of the shoulder blade of a patient, perfect matching of the implant is ensured, the repairing effect and stability are improved, and the application range is wide. The porosity and density similar to those of human cortical bones are selected, it is guaranteed that the implant has good mechanical property and biocompatibility, and rejection reaction is reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, specifically a 3D-printed personalized scapular implant based on the Fischer-Koch porous structure. Background Technology

[0002] The shoulder joint is an important joint in the human body with a complex anatomy, involving the clavicle, scapula, humerus, and numerous adjacent nerves, blood vessels, and muscles. The shoulder joint is stable and flexible, forming a crucial foundation for upper limb function. Complete scapular resection due to trauma, infection, or tumors can cause severe functional impairment. Currently, one approach is to use a scapular arthroplasty, suspending the humeral head over the clavicular remnant, resulting in complete loss of shoulder joint function. Another approach is to use a biomimetic scapular prosthesis.

[0003] Scapular implants are widely used in the repair of shoulder diseases, such as fractures and reconstruction after tumor resection. Most existing personalized scapular implants are solid designs, and a few use porous structures. However, these porous structures are often simple honeycomb or cubic structures with low porosity and limited surface area, which cannot fully promote bone ingrowth and osseointegration.

[0004] Traditional personalized bone implants often use simple honeycomb structures or plate-like or rod-like structures. These structures have a small surface area, resulting in poor bone adhesion, bone ingrowth, and bone integration. Utility Model Content

[0005] The purpose of this invention is to provide a 3D-printed personalized scapular implant based on the Fischer-Koch porous structure, in order to solve the problem that the existing scapular implants have a small surface area, resulting in poor bone adsorption, bone ingrowth and bone integration.

[0006] To achieve the above objectives, this utility model discloses a 3D-printed personalized scapular implant based on a Fischer-Koch porous structure, comprising a scapular implant whose shape is the shape of a scapular defect. The scapular implant consists of a scapular implant fusion surface near the scapular resection site and a scapular implant body. The scapular implant is 3D printed and has a porous structure, wherein the porous structure is selected from porous microstructures with extremely small curvature.

[0007] Preferably, the porous structure is a Fischer-Koch structure.

[0008] Preferably, the porous structure has a porosity of 62% and a corresponding relative density of 1.7 g / cm³.

[0009] Preferably, the scapular implant employs conformal design technology.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1. Large surface area: Fischer-Koch porous structure provides a surface area far exceeding that of traditional porous structures, significantly enhancing bone adhesion and bone ingrowth, and facilitating rapid osseointegration.

[0012] 2. Personalized matching: Through 3D printing technology and conformal design, we ensure a perfect fit between the implant and the patient's scapular defect, providing customized treatment plans and improving repair results.

[0013] 3. Mechanical performance optimization: Select porosity and density similar to human cortical bone to ensure that the implant has good mechanical properties and biocompatibility, and reduce rejection reactions.

[0014] 4. 3D Printing Manufacturing: Using 3D printing technology to achieve precision manufacturing, reduce human processing errors, and improve production efficiency and quality. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0016] Figure 1 This is a three-dimensional assembly diagram of the scapular implant of this utility model in its assembled state;

[0017] Figure 2 This is a three-dimensional structural diagram of the scapular implant of this utility model;

[0018] Figure 3 This is a schematic diagram of the porous structure of this utility model;

[0019] Figure 4 This is a comparison of the specific surface area of ​​the Fischer-Koch porous structure with other minimal surface structures.

[0020] 1. Scapular implant; 11. Fusion surface of scapular implant; 12. Main body of scapular implant. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] Please combine Figures 1 to 2 As shown, this utility model discloses a 3D-printed personalized scapular implant based on a Fischer-Koch porous structure, including a scapular implant 1. The shape of the scapular implant 1 is the shape of a scapular defect. The scapular implant 1 consists of a scapular implant fusion surface 11 near the scapular resection portion and a scapular implant body 12. The scapular implant 1 and the resected scapula constitute a complete scapula.

[0023] The scapular implant 1 is manufactured using 3D printing technology. 3D printing technology can accurately print personalized implant models based on the patient's medical imaging data and can efficiently prepare Fischer-Koch porous structures. This method not only improves manufacturing accuracy but also significantly reduces manual intervention in traditional manufacturing processes.

[0024] The porous structure has a porosity of 62%, corresponding to a relative density of 1.7 g / cm³. This density is close to that of human cortical bone, achieving good mechanical properties and biocompatibility. 3D printing technology allows for precise control of the porosity, enabling the implant to provide sufficient support while also promoting bone cell growth and integration.

[0025] The scapular implant 1 employs conformal design technology to ensure that the Fischer-Koch porous structure can be precisely customized according to the actual defect shape of the patient's scapula, ensuring a perfect match of the implant and improving the repair effect and stability.

[0026] The scapular implant 1 has a porous structure. The porous structure is selected from porous microstructures with extremely small curvature. The porous structure is preferably a Fischer-Koch structure, which has an extremely high specific surface area.

[0027] Figure 4 The figure shows a comparison of the specific surface area of ​​the Fischer-Koch porous structure with other minimal surface structures. As can be seen from the figure, the maximum specific surface area of ​​the Fischer-Koch porous structure can reach 10880 / m². This structure has a much larger surface area than traditional plate or rod structures, which helps to increase the bone adsorption area of ​​the implant, thereby promoting bone ingrowth and osseointegration.

[0028] The scapular implant 1 can be provided with drainage channels, drug placement channels, and other grooves to increase the functionality of the implant.

[0029] In use, the defect is reconstructed based on CT data. Conformal design technology is used to make the shape of the scapular implant 1 the same as that of the scapular defect. It is precisely customized according to the actual defect shape. 3D printing technology is used to manufacture the scapular implant 1, reducing manual processing errors, improving production efficiency and quality, and accurately printing personalized implant models.

[0030] During the surgery, the doctor fits the fusion surface 11 of the scapular implant to the scapular defect and uses steel nails to fix the scapular implant 1 to the scapular defect.

Claims

1. A 3D-printed personalized scapular implant based on a Fischer-Koch porous structure, characterized in that, The scapular implant (1) is shaped like a scapular defect. The scapular implant (1) consists of a scapular implant fusion surface (11) near the scapular resection site and a scapular implant body (12). The scapular implant (1) is made by 3D printing. The scapular implant (1) has a porous structure, and the porous structure is selected to be a porous microstructure with extremely small curvature.

2. The 3D-printed personalized scapular implant based on a Fischer-Koch porous structure according to claim 1, characterized in that, The porous structure is preferably a Fischer-Koch structure.

3. The 3D-printed personalized scapular implant based on a Fischer-Koch porous structure according to claim 1, characterized in that, The porous structure has a porosity of 62% and a corresponding relative density of 1.7 g / cm³.

4. The 3D-printed personalized scapular implant based on the Fischer-Koch porous structure according to claim 1, characterized in that, The scapular implant (1) adopts conformal design technology.

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