Preparation method of porous implant filled with O-intersecting lines units

Abstract

The invention provides a preparation method of a porous implant filled with O-intersecting lines units. The preparation method comprises the following steps: drawing a three-dimensional model of the O-intersecting lines units, controlling the bore diameter, wall thickness and porosity of the three-dimensional model according to the given specific dimension so as to generate a unit structure cell body, carrying out array copying operation on the unit structure cell body, thus obtaining a space porous network body, introducing in a femoral three-dimensional surface model, scaling the model to reach the proportion actually needed, carrying out cutting and Boolean operation on the porous network body and the femoral three-dimensional surface, thus obtaining a porous main body part, drawing the femoral steam end and a bolt positioning hole part by utilizing three-dimensional modeling, combing the porous main body part to enable the porous main body part to form a single-output porous implant body, saving the single-output porous implant body into an output format file and transmitting the file to layering software, adding with a bottom surface support, printing the porous implant body by adopting a 3D printer, clearing a substrate plate, taking out the porous implant, carrying out sand blasting treatment on the porous implant, and packaging the porous implant. With the adoption of the preparation method, units which are regular and uniform and having no closure can be generated, and the stressing uniformity is guaranteed.

Description

technical field [0001] The category of the present invention belongs to the field of biomedical devices, and relates to a preparation method of a porous implant, in particular to a preparation method of a porous implant filled with O-intersecting lines (cylindrical intersecting lines) units. Background technique [0002] The longest long tubular bone in the human body is the femur, which can be divided into two ends, similar bones such as the humerus. The femur, also known as the thigh bone, is mainly used to support the trunk and pelvis of the human body. It is the bone that bears the most weight and is extremely important in many animals such as humans. [0003] However, due to some unfavorable diseases or trauma, the femur fractures and causes a large area of ​​bone defect, and it cannot be healed by its own tissue, then bone grafting needs to be considered, especially for some elderly people, the best treatment method is artificial Bone or joint replacement can avoid po...

AI Technical Summary

Problems solved by technology

This design will inevitably lead to closed units, and closed units will not be suitable for bone tissue regeneration and ingrowth, etc., because for femoral models, it is very necessary to ensure the connectivity between bone trabeculae. In addition, it is difficult to generate uniform rules in this way unit, so it is difficult to ensure the uniformity of force

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