Manufacturing technique of digitally customizing orthopedic implants

Abstract

The invention discloses a manufacturing technique of digitally customizing an orthopedic implant, which comprises the steps of scanning a fracture part of a fracture patient, obtaining injured fracture data, introducing the injured fracture data into 3D (three dimensional) medical finite element simulation software for processing, obtaining a 3D figure of the fracture part, reconstructing and resetting fracture part, introducing 3D figure data after medical 3D reconstruction and resetting into 3D industrial design software, designing a primary orthopedic implant according to a surgical requirement and experience, obtaining 3D figure data of the primary orthopedic implant, introducing the 3D figure data of the primary orthopedic implant into the 3D medical finite element simulation software to conduct virtual assembly with the fracture part after the medical 3D reconstruction and resetting, confirming a position and a direction of a screw hole of the primary orthopedic implant according to a resetting condition of the fracture part, introducing 3D figure data of a final orthopedic implant into a quick forming machine to accumulate to a practical orthopedic implant, and obtaining the finished orthopedic implant. The manufacturing technique can design specially and achieve high-precision resetting and internal fixation according to different fracture shapes, and the manufactured orthopedic implant is good in surface bonding property and reasonable in thickness.

Description

technical field [0001] The invention relates to a manufacturing process of digitally customized orthopedic implants, belonging to the technical field of orthopedic implants. Background technique [0002] At present, the incidence of fracture is very high, and anatomical bone plate is widely used in its internal fixation treatment. Due to the differences in bone morphology and fractures of individual patients in the existing anatomical bone plates, that is, individual differences, even if the bone plate manufacturer divides its specifications and models finely enough, the bone plate and bone surface The anastomosis and the position of the screws are not ideal. Sufficient and possibly used bone plate models and specifications must be prepared before the operation. Even so, it is still inevitable that the doctor will temporarily reshape during the operation, unless the correctness of reduction is sacrificed. Accommodates the shape of the bone plate. It not only increases the...

AI Technical Summary

Problems solved by technology

Due to the differences in bone morphology and fractures of individual patients in the existing anatomical bone plates, that is, individual differences, even if the bone plate manufacturer divides its specifications and models finely enough, the bone plate and bone surface The anastomosis and the position of the screws are not ideal. Sufficient and possibly used bone plate models and specifications must be prepared before the operation. Even so, it is still inevitable that the doctor will temporarily reshape during the operation, unless the correctness of reduction is sacrificed. Accommodates the shape of the bone plate

It not only increases the arbitrariness and difficulty of the operation, but also makes it difficult to guarantee the conformity between the bone plate and the bone surface, the stability of internal fixation and the correctness of reduction.

For medical stainless steel, titanium and titanium alloy materials, this kind of cold deformation is theoretically prohibited, because cold bending will change the metallographic structure inside the material, reducing its strength and corrosion resistance

The reshaping of the bone plate during surgery may be one of the reasons for the failure of internal fixation

In addition, the position of the screw hole on the bone plate sometimes cannot meet the requirements for fixing all fracture fragments, and sometimes the screw hole is just on the fracture line, which affects the strength and effect of internal fixation

The above conditions may be another reason for the failure of internal fixation