Personalized acetabulum based on 3D (three-dimensional) printing and intraosseous support prosthesis, operation guide plate matched with support prosthesis, and preparation method

Abstract

The invention discloses a personalized acetabulum based on 3D (three-dimensional) printing and a intraosseous support prosthesis. The personalized acetabulum comprises an acetabulum cup based on 3D printing, and a honeycomb-shaped support body which is in integral printing connection with the acetabulum cup; the surface of the inner wall of the acetabulum cup is provided with bulges; a fixing holeof the acetabulum cup is formed in the wall body of the acetabulum cup. The invention also provides an operation guide plate which is matched with the support prosthesis, and provides a preparation method thereof. The personalized acetabulum based on the 3D printing, the intraosseous support prosthesis and the inner operation guide plate have the advantages that the matching degree in re-construction of a lesion region is high, the positioning on the operation guide plate is accurate, a doctor is assisted to quickly cut the lesion part, and the positioning on the screw fixing position is precise; the honeycomb-shaped support structure is suitable for the bone tissues to quickly grow, the rehabilitation time of a patient is shortened, and the effect is better than the traditional post-operation effect; compared with the traditional type, the operation is simpler and more precise and reliable; for the defects in the reconstruction plan of hip joints, the personalized and accurate reconstruction on the target coloboma region can be realized through detailed planning before operation.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and specifically relates to a personalized acetabular and intraosseous support prosthesis based on 3D printing, and provides a surgical guide plate used in conjunction with the support prosthesis, and provides a preparation method thereof. Background technique [0002] The acetabulum is the main part of human movement and weight-bearing. The acetabular lip made of fibrocartilage around the acetabulum can accommodate 2 / 3 of the femoral head, thereby tightly hugging the femoral head and increasing the stability of the joint. [0003] The current classic hip joint reconstruction devices are usually implanted with bone cement and allogeneic bone. Today's acetabular cup prosthetic implants are as fragile as cancellous bone. After the acetabular cup is implanted, it is subject to greater stress. Under the action of the acetabular cup and cancellous bone, the stress on the contact surface betwee...

AI Technical Summary

Problems solved by technology

[0003] The current classic hip joint reconstruction devices are usually implanted with bone cement and allogeneic bone. Today's acetabular cup prosthetic implants are as fragile as cancellous bone. After the acetabular cup is implanted, it is subject to greater stress. Under the action of the acetabular cup and the cancellous bone, the stress on the contact surface between the acetabular cup and the cancellous bone increases, which may lead to the collapse of the cancellous bone, resulting in the failure of the fixation of the acetabular cup prosthesis. In severe cases, a second operation is required

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