Method for designing and manufacturing individual 3D printed implant

A 3D printing and production method technology, applied in the field of medical implant biomaterials, can solve the problems of large difference in the elastic modulus of the jaw bone and increased risk of implantation, etc., and achieve the effect of low cost and simple process

Inactive Publication Date: 2015-02-18
SHANGHAI NINTH PEOPLES HOSPITAL SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
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  • Application Information

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Problems solved by technology

Moreover, some patients suffer from periodontal disease, osteoporosis, diabetes, tumors and other diseases, and their cancellous bone density is lower than that of normal people. Therefore, the elastic modulus of the jaw is much different from that of titanium, and the risk of implantation increases accordingly. Big

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  • Method for designing and manufacturing individual 3D printed implant

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Embodiment Construction

[0022] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0023] Such as figure 1 As shown, the printed implant of this embodiment includes an integrally formed head 1 and body 2, the head 1 is provided with a groove 11 for connecting the foundation pile, the surface of the body 2 is provided with threads, and the body 2 includes a solid Body 21 and porous grid body 22 , the porous grid body 22 covers the outer surface of the solid body 21 . The porous grid body 22 is a porous grid structure. The head 1 is the gingival part, and the body 2 is the osseointegration part.

[0024] This embodiment includes the following steps:

[0025] (1) The pore diameter of the porous ...

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Abstract

The invention discloses a method for designing and manufacturing an individual 3D printed implant. According to the method, the pore diameter of a porous net rack body is evenly divided into n1 grades, the porosity is evenly divided into n2 grades, the thickness is evenly divided into n3 grades, the elasticity modulus corresponding to n1*n2*n3 porous net rack bodies is divided into n4 grades, and densities of n4 bone substances are accorded; premaxillary bone quantitative CT photo-shooting is carried out on a patient, an average bone elasticity modulus E is calculated by utilizing three-dimensional reconstruction software and an empirical formula, and the thickest porous net rack body is selected from implants close to the range of the elasticity modulus; the implant is subjected to 3D printing, and the head part and the body part are integrally molded. The pore diameter, porosity and thickness of the porous net rack bodies are arranged in different grades, so that different sizes of elasticity modulus for the implants can be achieved, and the implant is suitable for people with different bone densities.

Description

technical field [0001] The invention relates to a medical implant biomaterial, in particular to a method for designing and manufacturing an individualized 3D printing implant. Background technique [0002] Titanium and titanium alloy materials have been used as implant materials for more than 30 years. However, the elastic modulus of titanium (110GPa) is different from that of human jawbone (3-30GPa for cortical bone and 0.5-3GPa for cancellous bone). If it is too large, it will lead to stress shielding effect, resulting in bone resorption, which will lead to implant loosening and implant failure. The bone density of the jaw itself varies depending on the location. The maxilla is dominated by cancellous bone, while the cortical bone of the mandible is thicker. Therefore, the elastic modulus of the bone environment is different depending on the implant site. Moreover, some patients suffer from periodontal disease, osteoporosis, diabetes, tumors and other diseases, and their ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61C8/00
Inventor 陆尔奕李慧武黄美慧卫忠
Owner SHANGHAI NINTH PEOPLES HOSPITAL SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
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